Book scanner

文档序号：1188161 发布日期：2020-09-22 浏览：4次中文

阅读说明：本技术 书刊扫描仪 (Book scanner ) 是由周夏平于 2019-03-12 设计创作，主要内容包括：一种书刊扫描仪,包括：具有支撑基座的支架组件；设置在所述支架组件上的书刊张开组件；转动设置在所述支架组件上并且位于所述书刊张开组件上方的书刊压平组件；及设置在所述支架组件上的图像捕捉组件。所述书刊张开组件包括：设置在所述支撑基座上的安装机架、转动设置在所述安装机架上的左平行四边形连杆机构、右平行四边形连杆机构、分别设置在左右平行四边形连杆机构上的左托板及右托板,及用于对左右托板之间的间隙进行调节的间隙调节装置。(A book scanner comprising: a bracket assembly having a support base; the book opening assembly is arranged on the bracket assembly; the book and periodical flattening assembly is rotatably arranged on the bracket assembly and is positioned above the book and periodical opening assembly; and an image capturing assembly disposed on the stand assembly. The book and periodical opening assembly comprises: the device comprises a mounting frame arranged on the supporting base, a left parallelogram link mechanism, a right parallelogram link mechanism, a left supporting plate, a right supporting plate and a gap adjusting device, wherein the left parallelogram link mechanism and the right parallelogram link mechanism are rotatably arranged on the mounting frame, the left supporting plate and the right supporting plate are respectively arranged on the left parallelogram link mechanism and the right parallelogram link mechanism, and the gap adjusting device is used for adjusting the gap between the left supporting plate and the right supporting plate.)

1. A book scanner, comprising:

a bracket assembly having a support base; the book opening assembly is arranged on the bracket assembly;

the book and periodical flattening assembly is rotatably arranged on the bracket assembly and is positioned above the book and periodical opening assembly; and an image capturing assembly disposed on the stand assembly;

the book and periodical opening assembly comprises: the device comprises a mounting frame arranged on the support base, a left parallelogram link mechanism, a right parallelogram link mechanism, a left supporting plate, a right supporting plate and a gap adjusting device, wherein the left parallelogram link mechanism and the right parallelogram link mechanism are rotatably arranged on the mounting frame;

the mounting frame includes: the hinge comprises a base and a pair of pivot mounting plates arranged on the base, wherein the top of the left end of each pivot mounting plate forms a left horizontal contact surface, the top of the right end forms a right horizontal contact surface, the right end of the left horizontal contact surface inclines towards the right horizontal contact surface to form a left inclined contact surface, the left end of the right horizontal contact surface inclines towards the left horizontal contact surface to form a right inclined contact surface, and the left inclined contact surface and the right inclined contact surface jointly define a mountain-shaped protrusion part;

the left parallelogram linkage comprises a central pivot which is spanned between the bottoms of the two chevron-shaped protrusions of the two pivot mounting plates, a left pivot which is spanned below the corresponding left horizontal contact surfaces of the two pivot mounting plates, a left first pendulum shaft which is in rotational connection with the central pivot through pivot connection pieces which are respectively positioned on the outer side surfaces of the two pivot mounting plates, a left second pendulum shaft which is in rotational connection with the left pivot through other pivot connection pieces which are respectively positioned on the outer side surfaces of the two pivot mounting plates, and two left connecting plates which are respectively positioned on the outer side surfaces of the two pivot mounting plates and are in rotational connection with the left first pendulum shaft and the left second pendulum shaft, wherein each left connecting plate is provided with an inclined positioning surface;

the right parallelogram linkage comprises a right pivot which is arranged below corresponding right horizontal contact surfaces of the two pivot mounting plates in a spanning mode, a right first swing shaft which is in rotary connection with the center pivot of the left parallelogram linkage through a pair of pivot connecting pieces which are respectively positioned on the outer side surfaces of the two pivot mounting plates, a right second swing shaft which is in rotary connection with the right pivot through another pair of pivot connecting pieces which are respectively positioned on the outer side surfaces of the two pivot mounting plates, and two right connecting plates which are respectively positioned on the outer side surfaces of the two pivot mounting plates and are used for connecting the right first swing shaft with the right second swing shaft in a rotary mode, wherein each right connecting plate is provided with an inclined positioning surface;

the left horizontal contact surface of each pivot mounting plate and the right horizontal contact surface of the pivot mounting plate are positioned on a first plane; the central pivot, the left pivot and the right pivot are located on a second plane; the first plane is parallel to the second plane; the central pivot, the left pivot and the right pivot are parallel to each other; the left first swing shaft is arranged to swing from a position in contact with the left horizontal contact surface of each pivot mounting plate to a position in contact with the corresponding left inclined contact surface; the right first swing shaft is arranged to swing from a position in contact with the right horizontal contact surface of each pivot mounting plate to a position in contact with the corresponding right inclined contact surface;

the left supporting plate is arranged on the inclined positioning surfaces of the left connecting plates; the right supporting plate is arranged on the inclined positioning surfaces of the pair of right connecting plates;

the gap adjusting device includes:

the left adjusting frame comprises a pair of left rotating arms and a left connecting block which connects the left rotating arms at the top; the right adjusting frame comprises a pair of right rotating arms and a right connecting block which connects the right rotating arms at the top; a sleeve; at least one screw fixed on the sleeve; a pushing block slidably disposed on the at least one screw;

a nut threadedly connected to the at least one screw and positioned above the pushing block; the extension spring is arranged between the left first swing shaft and the right first swing shaft;

the pair of right rotating arms of the right adjusting frame is arranged between the pair of left rotating arms of the left adjusting frame, and the bottom of the left adjusting frame and the bottom of the right adjusting frame are both in rotating connection with the central pivot; the sleeve is arranged between the pair of right rotating arms of the right adjusting frame and is also in rotary connection with the central pivot; the pushing block is arranged to slide downwards along the axial direction of the at least one screw rod and push the left adjusting frame and the right adjusting frame on two sides of the at least one screw rod when the nut and the at least one screw rod are mutually screwed; the extension spring is arranged to cause the left adjusting frame and the right adjusting frame to simultaneously push the pushing block upwards along the axial direction of the at least one screw rod when the left first swing shaft and the right first swing shaft are mutually tensioned;

the book and periodical flattening assembly comprises a rotating frame which is rotatably arranged on the bracket assembly; and a pair of transparent pressing plates which are rotatably arranged in the rotating frame, are connected with each other and have a certain included angle with each other.

2. The book scanner of claim 1, wherein: the bracket assembly includes: the front transverse column, the rear transverse column, the pair of longitudinal connecting columns, the pair of front upright columns, the pair of rear upright columns, the pair of upper longitudinal connecting columns, the pair of extending columns and the top transverse column are arranged in parallel, the pair of longitudinal connecting columns are arranged between the front transverse column and the rear transverse column in a spanning mode, the pair of front upright columns are vertically and upwards arranged from the left end and the right end of the front transverse column, the pair of rear upright columns are vertically and upwards arranged from the left end and the right end of the rear transverse column, the pair of upper longitudinal connecting columns are used for respectively connecting the top of the rear upright column arranged at the left end of the rear transverse column with the top of the front upright column arranged at the left end of the front transverse column and connecting the top of the rear upright column arranged at the right end of the rear transverse column with the top of the front upright; the front transverse column, the rear transverse column and the longitudinal connecting column which are connected mutually form a supporting base for bearing the book and periodical opening assembly.

3. The book scanner of claim 2, wherein: the rotary frame comprises a pair of side rods, a rear rod and a holding rod, the rear rod is connected with the side rods at the rear ends of the side rods, the holding rod is connected with the side rods at the front ends of the side rods, the side rods are rotatably arranged on the inner sides of the tops of the corresponding rear upright posts of the support assembly, so that the rotary frame is positioned above the book opening assembly and between the two upper longitudinal connecting posts of the support assembly, and each transparent pressing plate is rotatably connected with the corresponding side rod.

4. The book scanner of claim 3, wherein: the image capture assembly comprises a horizontal mounting plate arranged on each upper longitudinal connecting column of the support assembly, a vertical mounting plate arranged on the horizontal mounting plate, an inclined mounting plate arranged on the vertical mounting plate, a camera arranged on the inclined mounting plate, and a camera baffle arranged on the inclined mounting plate and used for assisting in supporting the camera from the front side of the camera, wherein a camera lens hole is formed in the camera baffle.

5. The book scanner of claim 4, wherein: and a tensioning spring is arranged between the rear upright post of the support assembly and the rear rod of the rotating frame of the book and periodical flattening assembly.

6. The book scanner of claim 5, wherein: a front baffle is arranged between the two front upright columns and the front transverse column of the bracket assembly; the bottom of the front baffle is rotatably provided with a locking plate, and the locking plate is longitudinally provided with a longitudinal groove and a transverse notch which is positioned at the top of the locking plate and communicated with the longitudinal groove; and a handle locking piece which can be inserted into the transverse notch so as to lock the locking piece on the holding rod is arranged on the holding rod of the rotating frame of the book and periodical flattening assembly.

7. The book scanner of claim 6, wherein: a hinge is arranged between the vertical mounting plate and the horizontal mounting plate of the image capturing component; each camera is provided with a power line and a data line; a wire groove is formed in the side face of the camera baffle, a wire groove communicated with the wire groove of the camera baffle is formed in the inclined mounting plate, a wire groove communicated with the wire groove in the inclined mounting plate is formed in the vertical mounting plate, and a wire groove communicated with the wire groove in the vertical mounting plate is formed in the horizontal mounting plate; the power line and the data line are laid in the plurality of wire slots; the wire harness storage cavity and the spring storage cavity are further formed in the horizontal mounting plate and are communicated with the wire grooves of the horizontal mounting plate, a tension spring is arranged in the spring storage cavity, one end of the tension spring is fixed to one side, far away from the wire harness storage cavity, of the spring storage cavity, and the other end of the tension spring is hooked on the power line and the data line.

8. The book scanner of claim 7, wherein: further comprising a page holding assembly;

the page holding assembly includes:

the positioning block is provided with an abutting plate, a limiting groove is longitudinally formed in the bottom surface of the abutting plate, a sliding groove is further longitudinally formed in the bottom of the limiting groove, and a longitudinally extending positioning flange is formed by protruding the top surface of the abutting plate;

the book page fixing frame is provided with a bottom wall, a pair of side walls formed by bending from the left end and the right end of the bottom wall and a pressing plate formed by bending from the tail end of each side wall outwards, a through hole is formed in the bottom wall, and the length of the pressing plate in the direction parallel to the longitudinal direction of the limiting groove is greater than that of each side wall;

the adjusting screw penetrates through the through hole and the sliding groove and extends into the limiting groove; and

and the rectangular nut is arranged in the limiting groove and is in threaded connection with the adjusting screw.

The top of the left supporting plate is longitudinally provided with a positioning groove; the positioning block of the page holding component is attached to and fixed on the back of the left supporting plate, and the positioning flange extends into and is clamped in the positioning groove of the left supporting plate; the page fixing frame is arranged in the positioning groove from the front surface of the left supporting plate, and the pressing plate of the page fixing frame abuts against the front surface of the left supporting plate; the adjusting screw sequentially penetrates through the through hole and the sliding groove to extend into the limiting groove and is in threaded connection with a rectangular nut arranged in the limiting groove; the adjusting screw is arranged to be rotatable only within the bore and not axially movable relative to the bore; and the rectangular nut is only arranged to slide longitudinally in the limiting groove and cannot rotate in the limiting groove.

9. The book scanner of claim 8, wherein: the pivot reinforcing device comprises a first reinforcing plate and a second reinforcing plate, wherein the first reinforcing plate is provided with two first clamping grooves, and the second reinforcing plate is provided with two second clamping grooves; the first reinforcing plate and the second reinforcing plate are tightly buckled together, so that the left pivot shaft is tightly clamped between one first clamping groove and the corresponding second clamping groove, and the left second swing shaft is tightly clamped between the other first clamping groove and the corresponding second clamping groove.

10. A books and periodicals opens subassembly for books and periodicals scanner which characterized in that includes:

the device comprises a mounting rack, a left parallelogram link mechanism and a right parallelogram link mechanism which are rotatably arranged on the mounting rack, a left supporting plate and a right supporting plate which are respectively arranged on the left parallelogram link mechanism and the right parallelogram link mechanism, and a gap adjusting device for adjusting the gap between the left supporting plate and the right supporting plate;

the gap adjusting device includes:

a nut threadedly connected to the at least one screw and positioned above the pushing block; the extension spring is arranged between the left first swing shaft and the right first swing shaft;

the pair of right rotating arms of the right adjusting frame is arranged between the pair of left rotating arms of the left adjusting frame, and the bottom of the left adjusting frame and the bottom of the right adjusting frame are both in rotating connection with the central pivot; the sleeve is arranged between the pair of right rotating arms of the right adjusting frame and is also in rotary connection with the central pivot; the pushing block is arranged to slide downwards along the axial direction of the at least one screw rod and push the left adjusting frame and the right adjusting frame on two sides of the at least one screw rod when the nut and the at least one screw rod are mutually screwed; the tension spring is arranged to cause the left and right adjusting frames to push the pushing block upwards along the axial direction of the at least one screw when the left and right first swing shafts are tightened with each other.

Technical Field

The invention relates to a book scanning device, in particular to a book scanner.

Background

As is known, the currently popular book and periodical scanners for scanning paper materials such as books, foreign matters, newspapers, ancient books and the like generally use a photographing type scanning device. When the scanning equipment scans paper materials, particularly books, firstly, inner pages of the books are opened and arranged on the V-shaped bracket in a left-right mode, pages on the left side and the right side of the books are photographed by the aid of two cameras arranged on the upper side of the V-shaped bracket, so that photos of the pages of the books are obtained, and then the photos of the pages are edited in a later period to form a required electronic document.

The existing photographing type book scanner has some defects, so that a great deal of time and energy are needed to be spent on post-processing pages of books, and even if a great deal of time and energy is spent, the obtained page image quality of books is very poor.

Specifically, referring to fig. 1a, a photographing type book scanner of the prior art has two trays 200, 300 on the left and right, and two cameras 400, 500 on the left and right above the two trays 200, 300, respectively. The left camera 400 is used to photograph pages on the right tray 300, while the right camera 500 is used to photograph pages on the left tray 200.

In the above scanner, although the distance between the left and right support plates 200 and 300 can be adjusted to place books of different thicknesses, the distance between the two support plates 200 and 300 is maintained during the scanning (photographing) of a specific book after the distance between the two support plates 200 and 300 is adjusted.

Therefore, in the process of photographing pages of a book, when photographing is started, the pages on the left tray 200 are thinner, and the pages on the right tray 300 are thicker. In other words, the distance between the outermost page on the left tray 200 and the right camera 500 is much greater than the distance between the outermost page on the right tray 300 and the left camera 400. When a page with the middle thickness of the book is photographed, the distance between the outermost page on the left tray 200 and the right camera 500 is approximately the same as the distance between the outermost page on the right tray 300 and the left camera 400; when the last page of the book is gradually photographed, the distance between the outermost page on the left tray 200 and the right camera 500 is much smaller than the distance between the outermost page on the right tray 300 and the left camera 400.

It can be seen that, in the process of taking a picture of pages of books by a book scanner in the prior art, the distance between the left side page and the right side camera changes from far to near, and conversely, the distance between the right side page and the left side camera changes from near to far, and in the above-mentioned process of taking a picture of pages of books, only when taking a picture of pages with a thickness in the middle of the books, the distances between the two side cameras and the corresponding pages of books are equal.

Although the camera can perform an automatic focusing function when pages at different distances are shot so as to ensure that a shot page picture is clear, sometimes the automatic focusing function fails, for example, because the colors or the brightness of the surfaces of some pages in a part of books are not obviously contrasted, the automatic focusing function of a part of cameras fails, and further, the page picture of the books shot by the camera is blurred.

In addition, even if the autofocus function of the camera is operating normally, when the distance (focal length) between the page of the book and the camera is changed, the size of the taken page picture is inconsistent, for example, when the focal length is far, the taken page picture is small, and when the focal length is near, the taken page picture is large. In other words, the above-mentioned process of changing the distance (focal length) between the page of the book and the corresponding camera causes the size of the page photos taken by the camera to be different, which creates great difficulty in post-batch cropping of images by computer image processing software.

That is, when the image processing software cuts all page photos of the book in batch to remove extraneous background images (such as the image of the V-shaped pallet) in the page photos except for the page edges and cuts the page photos into a uniform-sized page photo, since the page photos are taken in different sizes, some page photos have page edges close to the plate center and some page photos have page edges far from the plate center.

Therefore, when the page photos with the page edges far from the plate center are cut in batch by taking the page photos with the page edges far from the plate center as a standard, the page photos with the page edges near the plate center can cause the page edges and the information outside the page edges to be still remained in the cut page photos when being cut, so that the cut page photos are inconsistent with the corresponding pages of the book, and the cut page photos are embodied as that the cut page photos simultaneously contain the rest information (such as the mapping of a V-shaped supporting plate) except the printing information of the corresponding pages; when the page photos with the page edges close to the plate center are cut in batch by taking the page photos with the page edges close to the plate center as a standard, the page photos with the page edges far away from the plate center can cause the page edges and the printing information in the page edges to be cut off carelessly when the page photos are cut off, so that the cut page photos are inconsistent with the corresponding pages of the book, and part of the printing information specifically expressed as the corresponding pages does not appear in the cut page photos.

In summary, when the page photos scanned and formed by the book and periodical scanner are cut down in batches at a later stage, the page edges and the printing information in the page edges may be cut off carelessly, so that the printing information is incomplete, and some page photos still retain redundant background images, thereby affecting the aesthetic degree of the cut page photos.

Therefore, if the book scanner in the prior art can be improved, so that when the camera takes a picture of a book page, the distance (focal length) between the page and the camera is kept unchanged, so that the camera can take the picture in fixed focus, and then the book page pictures with higher consistency (namely, the positions of the page edges of all the page pictures are the same or basically the same) can be obtained, so that the accurate batch cutting of the book page pictures is realized, further, the problem that the image processing software cuts each page picture one by one and consumes a large amount of processing time is avoided, the processing time of the image software in the later period is finally shortened, the processing efficiency is improved, and the book scanner is a technical problem which is urgently needed to be solved in the industry.

Disclosure of Invention

The invention aims to provide a book scanner, which can ensure that the distances between all book pages and corresponding cameras are always kept unchanged when the required pages of a book are photographed, so that the fixed-focus photographing of the book pages is realized, the book page photos with higher consistency are obtained, further, the uniform cutting processing of the book page photos by image software is facilitated, the post-processing time of the image software is finally shortened, and the processing efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme:

a book scanner comprising: a bracket assembly having a support base; the book opening assembly is arranged on the bracket assembly;

The book and periodical opening assembly comprises: the device comprises a mounting frame arranged on the supporting base, a left parallelogram link mechanism and a right parallelogram link mechanism which are rotatably arranged on the mounting frame, a left supporting plate and a right supporting plate which are respectively arranged on the left parallelogram link mechanism and the right parallelogram link mechanism, and a gap adjusting device used for adjusting the gap between the left supporting plate and the right supporting plate.

The mounting frame includes: the book spine support device comprises a base and a pair of pivot mounting plates arranged on the base, wherein the top of the left end of each pivot mounting plate forms a left horizontal contact surface, the top of the right end forms a right horizontal contact surface, the right end of the left horizontal contact surface inclines towards the right horizontal contact surface to form a left inclined contact surface, the left end of the right horizontal contact surface inclines towards the left horizontal contact surface to form a right inclined contact surface, the left inclined contact surface and the right inclined contact surface jointly define a mountain-shaped protruding part, and a spine support shaft spans between the tops of the two mountain-shaped protruding parts of the two pivot mounting plates.

The left parallelogram linkage mechanism comprises a central pivot which is arranged between the bottoms of the two mountain-shaped protruding parts of the two pivot mounting plates in a spanning mode, a left pivot which is arranged below the corresponding left horizontal contact surfaces of the two pivot mounting plates in a spanning mode, a left first swing shaft which is in rotary connection with the central pivot through pivot connecting pieces which are respectively arranged on the outer side surfaces of the two pivot mounting plates, a left second swing shaft which is in rotary connection with the left pivot through other pivot connecting pieces which are respectively arranged on the outer side surfaces of the two pivot mounting plates, and two left connecting plates which are respectively arranged on the outer side surfaces of the two pivot mounting plates and are used for connecting the left first swing shaft with the left second swing shaft in a rotary mode, wherein each left connecting plate is provided with an inclined positioning surface.

The right parallelogram linkage mechanism comprises a right pivot which is arranged below corresponding right horizontal contact surfaces of the two pivot mounting plates in a spanning mode, a right first swing shaft which is in rotary connection with the center pivot of the left parallelogram linkage mechanism through a pair of pivot connecting pieces which are respectively arranged on the outer side surfaces of the two pivot mounting plates, a right second swing shaft which is in rotary connection with the right pivot through another pair of pivot connecting pieces which are respectively arranged on the outer side surfaces of the two pivot mounting plates, and two right connecting plates which are respectively arranged on the outer side surfaces of the two pivot mounting plates and are used for connecting the right first swing shaft with the right second swing shaft in a rotary mode, and each right connecting plate is provided with an inclined positioning surface.

The left horizontal contact surface of each pivot mounting plate and the right horizontal contact surface of the pivot mounting plate are positioned on a first plane; the central pivot, the left pivot and the right pivot are located on a second plane; the first plane is parallel to the second plane; the central pivot, the left pivot and the right pivot are parallel to each other; the left first swing shaft is arranged to swing from a position in contact with the left horizontal contact surface of each pivot mounting plate to a position in contact with the corresponding left inclined contact surface; the right first swing axis is arranged to swing from a position in contact with the right horizontal contact surface of each pivot mounting plate to a position in contact with the corresponding right inclined contact surface.

The left supporting plate is arranged on the inclined positioning surfaces of the left connecting plates; the right supporting plate is arranged on the inclined positioning surfaces of the pair of right connecting plates.

The gap adjusting device includes:

the left adjusting frame comprises a pair of left rotating arms and a left connecting block which connects the left rotating arms at the top;

the right adjusting frame comprises a pair of right rotating arms and a right connecting block which connects the right rotating arms at the top;

a sleeve;

at least one screw fixed on the sleeve;

a pushing block slidably disposed on the at least one screw;

a nut threadedly connected to the at least one screw and positioned above the pushing block; and

the extension spring is arranged between the left first swing shaft and the right first swing shaft;

the books and periodicals flattening assembly comprises:

the rotating frame is rotatably arranged on the bracket component; and

a pair of transparent pressing plates which are rotatably arranged in the rotating frame, are connected with each other and have a certain included angle with each other.

Also provided is a book opening assembly, comprising: the device comprises a mounting frame arranged on the supporting base, a left parallelogram link mechanism and a right parallelogram link mechanism which are rotatably arranged on the mounting frame, a left supporting plate and a right supporting plate which are respectively arranged on the left parallelogram link mechanism and the right parallelogram link mechanism, and a gap adjusting device used for adjusting the gap between the left supporting plate and the right supporting plate.

the gap adjusting device includes: the left adjusting frame comprises a pair of left rotating arms and a left connecting block which connects the left rotating arms at the top; the right adjusting frame comprises a pair of right rotating arms and a right connecting block which connects the right rotating arms at the top; a sleeve; at least one screw fixed on the sleeve; a pushing block slidably disposed on the at least one screw; a nut threadedly connected to the at least one screw and positioned above the pushing block; and the extension spring is arranged between the left first swing shaft and the right first swing shaft.

The pair of right rotating arms of the right adjusting frame is arranged between the pair of left rotating arms of the left adjusting frame, and the bottom of the left adjusting frame and the bottom of the right adjusting frame are both in rotating connection with the central pivot; the sleeve is arranged between the pair of right rotating arms of the right adjusting frame and is also in rotary connection with the central pivot; the pushing block is arranged to slide downwards along the axial direction of the at least one screw rod and push the left adjusting frame and the right adjusting frame on two sides of the at least one screw rod when the nut and the at least one screw rod are mutually screwed; the tension spring is arranged to cause the left and right adjusting frames to push the pushing block upwards along the axial direction of the at least one screw when the left and right first swing shafts are tightened with each other.

Compared with the prior art, the scheme of the invention has the following advantages:

in the invention, a left and a right parallelogram link mechanisms which form a certain angle with each other are adopted, so that in the whole book scanning process, the angles of a left and a right supporting plates which are arranged on the corresponding parallelogram link mechanisms relative to a left (right) horizontal contact surface of a pivot mounting plate are always kept constant in the swinging process, the left and right pages of a book which are arranged on the left and the right supporting plates and are pressed by corresponding transparent pressing plates are always symmetrically distributed on the left and the right sides of a central pivot, and in the whole scanning process, the heights of the two pages to be scanned are always kept constant. This means that, in the whole scanning process, when the camera of the image capturing component shoots the page of the book, the distance (focal length) between the page and the camera is kept unchanged, so that the shooting can be performed in fixed focus, and then the page photo of the book with higher consistency can be obtained, so as to realize the accurate cutting of the page photo of the book, and further avoid cutting each page photo one by one, finally reduce the processing time of the later-stage image software, and improve the image processing efficiency.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1a is a perspective view of a prior art book scanner;

fig. 1 is a perspective view of a book scanner according to an embodiment of the present invention;

FIG. 2 is a perspective view of the book scanner of FIG. 1 from another angle;

fig. 3 is a perspective view of a book scanner according to an embodiment of the present invention;

FIG. 4 is a perspective exploded view of the book opening assembly and the book flattening assembly of the book scanner shown in FIGS. 1-3;

FIG. 5 is a perspective view showing in detail a portion of the components of the book opening assembly shown in FIG. 4;

FIG. 5a is an exploded perspective view of a gap adjustment mechanism of a book opening assembly of a book scanner according to one embodiment of the present invention;

FIG. 6 is a perspective view of the book opening assembly and the book pressing assembly shown in FIG. 4;

fig. 7 shows a detailed structure of the left support plate of the book opening assembly of the book scanner and the page holding assembly disposed thereon according to an embodiment of the invention;

FIG. 8 illustrates a detailed perspective view of the left support plate and the page holder assembly disposed thereon as shown in FIG. 7;

FIG. 9 illustrates a detailed perspective view of the page holding assembly shown in FIGS. 7-8;

FIG. 10 is an exploded perspective view of a pivot mounting apparatus for a book scanner according to one embodiment of the present invention;

FIG. 11 is a perspective view of a raised rotating frame of a book platen assembly of a book scanner according to one embodiment of the present invention;

FIG. 12 illustrates a plan view, partially in section and from the front, of a book scanner according to one embodiment of the present invention;

FIG. 13 is a view similar to FIG. 12 showing a scanning of pages in the front half of a book by a book scanner according to one embodiment of the present invention;

FIG. 14 is a view similar to FIG. 12 showing a book scanner scanning pages in the middle of a book according to one embodiment of the present invention;

FIG. 15 is a view similar to FIG. 12 showing a book scanner scanning pages of the back half of a book in accordance with one embodiment of the present invention;

FIG. 16 illustrates the detailed structure of the image capture assembly of the book scanner of one embodiment of the present invention;

FIGS. 17-18 illustrate a cross-sectional view of a portion of the components of the image capture assembly shown in FIG. 16; and

figure 19 is a perspective view of a book scanner in a fully folded position in accordance with one embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

Referring to fig. 1-19, and more particularly to fig. 1, according to one embodiment of the present invention, there is provided a book scanner 100 comprising:

a bracket assembly 10;

a book opening assembly 20 disposed on the stand assembly 10;

a book flattening assembly 30 rotatably disposed on the support assembly 10 and above the book opening assembly 20; and

an image capture assembly 40 disposed on the stand assembly 10.

With particular reference to fig. 1 and 3, the bracket assembly 10 comprises: the front and rear horizontal columns 12 and 14 are arranged in parallel, a pair of longitudinal connecting columns 16 is spanned between the front and rear horizontal columns 12 and 14, a pair of front upright columns 18 is vertically upwards arranged from the left and right ends of the front horizontal column 12, a pair of rear upright columns 11 is vertically upwards arranged from the left and right ends of the rear horizontal column 14, a pair of upper longitudinal connecting columns 13 is respectively used for connecting the top of the rear upright column 11 arranged at the left end of the rear horizontal column 14 with the top of the front upright column 18 arranged at the left end of the front horizontal column 12 and connecting the top of the rear upright column 11 arranged at the right end of the rear horizontal column 14 with the top of the front upright column 18 arranged at the right end of the front horizontal column 12, a pair of extending columns 15 are respectively formed by continuously extending upwards from the tops of the corresponding rear upright columns 11, and a top horizontal column 17 is used for connecting the pair of extending columns 15.

The front and rear transverse posts 12, 14 and the longitudinal connecting post 16, which are connected to each other, together form a support base for carrying the book and magazine opening assembly 20 described above. In other words, the support assembly 10 includes the support base and the rest of the components formed on the support base, such as the front upright post 18, the longitudinal connecting post 13 on the rear upright post 11, the extending post 15 and the top transverse post 17.

With particular reference to fig. 3-6, the book opening assembly 20 includes: a mounting frame provided on the support base of the carriage assembly 10, a left parallelogram linkage 290, a right parallelogram linkage 292 rotatably provided on the mounting frame, a left support plate 272 and a right support plate 274 provided on the left and right parallelogram linkages 290, 292, respectively, and a gap adjusting device 29 for adjusting the gap between the left and right support plates 272, 274.

The mounting frame includes: a base 22, a pair of pivot mounting plates 24 disposed on the base 22. The top of the left end of each pivot mounting plate 24 forms a left horizontal contact surface 242, the top of the right end forms a right horizontal contact surface 244, the right end of the left horizontal contact surface 242 is inclined toward the right horizontal contact surface 244 to form a left inclined contact surface 246, the left end of the right horizontal contact surface 244 is inclined toward the left horizontal contact surface 242 to form a right inclined contact surface 248, the left inclined contact surface 246 and the right inclined contact surface 248 jointly define a mountain-shaped protrusion, and a spine support shaft 267 (refer to fig. 13) is spanned between the tops of the two mountain-shaped protrusions of the two pivot mounting plates 24.

The left parallelogram linkage 290 includes a center pivot 262 straddling between bottoms of the two chevron-shaped protrusions of the two pivot mounting plates 24, a left pivot 264 straddling under the respective left horizontal contact surfaces 242 of the two pivot mounting plates 24, a left first swing axle 268 pivotally connected to the center pivot 262 by pivot links 28 respectively located on outer sides of the two pivot mounting plates 24, a left second swing axle 261 pivotally connected to the left pivot 264 by other pivot links 28 respectively located on outer sides of the two pivot mounting plates 24, and a left connecting plate 21 pivotally connecting the left first swing axle 268 to the left second swing axle 261 on outer sides of the two pivot mounting plates 24. Each of the left connecting plates 21 has an inclined positioning surface 212.

The right parallelogram linkage 292 includes a right pivot shaft 266 disposed below the respective right horizontal contact surfaces 242 of the two pivot mounting plates 24, a right first swing shaft 263 pivotally connected to the central pivot shaft 262 of the left parallelogram linkage 290 by a pair of pivot connection tabs 28 located on the outer side of the two pivot mounting plates 24, respectively, a right second swing shaft 265 pivotally connected to the right pivot shaft 266 by another pair of pivot connection tabs 28 located on the outer side of the two pivot mounting plates 24, respectively, and a right connection plate 23 pivotally connecting the right first swing shaft 263 to the right second swing shaft 265 on the outer side of the two pivot mounting plates 24; each of the right connecting plates 23 has an inclined positioning surface 232.

The left horizontal contact surface 242 of each pivot mounting plate 24 and the right horizontal contact surface 242 of that pivot mounting plate 24 lie in a first plane; the center pivot 262, the left pivot 264 and the right pivot 266 are located on a second plane; the first plane is parallel to the second plane; the center pivot 262, the left pivot 264 and the right pivot 266 are parallel to each other; the left first swing axle 268 is configured to swing from a position in contact with the left horizontal contact surface 242 of each pivot mounting plate 24 to a position in contact with the corresponding left inclined contact surface 246; the right first swing axle 263 is configured to swing from a position in contact with the right horizontal contact surface 242 of each pivot mounting plate 24 to a position in contact with the corresponding right angled contact surface 248.

The left support plate 272 is mounted on the inclined positioning surfaces 212 of the pair of left connecting plates 21; the right support plate 274 is mounted on the inclined positioning surfaces 232 of the pair of right link plates 23.

With particular reference to fig. 5, 5a, said gap adjustment means 29 comprise:

a left adjustment frame 292 including a pair of left rotation arms 2922 and a left connection block 2924 connecting the pair of left rotation arms 2922 together at the top;

a right adjustment bracket 294 including a right connecting block 2944 connected by a pair of right rotating arms 2942 and connecting the pair of right rotating arms 2942 at the top;

a sleeve 2962;

a pair of screws 2964 fixed to the sleeve 2962;

a pushing block 298 slidably provided on the pair of screws 2964;

nuts 2966 disposed on respective screws 2964 and above the thrust block 298; and an extension spring 291 disposed between the left first swing shaft 268 and the right first swing shaft 263.

The pair of right swivel arms 2942 of the right adjustment bracket 294 are disposed between the pair of left swivel arms 2922 of the left adjustment bracket 292, and the bottom of the left adjustment bracket 292 and the bottom of the right adjustment bracket 294 are both pivotally connected to the central pivot shaft 262; the sleeve 2962 is disposed between the pair of right pivot arms 2942 of the right adjustment bracket 294 and is also pivotally connected to the center pivot 262; the pushing block 298 is arranged to push the left adjusting frame 292 and the right adjusting frame 294 on the two sides of the two screw rods 2964 when the two screw rods slide downwards along the axial direction of the two screw rods 2964, so that the included angle between the left adjusting frame 292 and the right adjusting frame 294 is increased; the extension spring 291 is configured to cause the left adjustment frame 292 and the right adjustment frame 294 to simultaneously push the pushing block 298 upwards along the axial direction of the two threaded rods 2964 when the left first swing shaft 268 and the right first swing shaft 263 are tightened with each other, so that the included angle between the left adjustment frame 292 and the right adjustment frame 294 is reduced.

With particular reference to figures 1, 4, 6 and 11, the book and periodical flattening assembly 30 comprises:

a rotating frame 36 rotatably disposed on the bracket assembly 10; and

a pair of transparent press plates 32 connected to each other and having a certain angle therebetween are rotatably disposed in the rotating frame 36.

The rotating frame 36 includes a pair of side bars 362, a rear bar 368 interconnecting the pair of side bars 362 at rear ends thereof, and a holding bar 364 interconnecting the pair of side bars 362 at front ends thereof. The pair of side bars 362 are rotatably disposed on the top inner side of the corresponding rear upright 11 of the rack assembly 10, so that the rotating rack 36 is located above the book opening assembly 20 and between the two upper longitudinal connecting columns 13 of the rack assembly 10.

Each of the transparent press plates 32 is rotatably connected to a corresponding side bar 362.

With particular reference to fig. 1, 3 and 11, the image capturing assembly 40 includes a horizontal mounting plate 42 disposed on each upper longitudinal connecting column 13 of the rack assembly 10, a vertical mounting plate 44 disposed on the horizontal mounting plate 42, an inclined mounting plate 46 disposed on the vertical mounting plate 44, a camera 48 disposed on the inclined mounting plate 46 and used for taking pictures of corresponding pages of books placed on the left and right trays of the book opening assembly 20, and a camera bezel 41 disposed on the inclined mounting plate 46 for assisting in supporting the camera 48 from the front of the camera 48. The camera baffle 41 is provided with a camera lens hole 412 for allowing a lens of the camera 48 to freely retract or extend when the camera 48 takes a picture.

Referring to fig. 11, when the user lifts the rotating frame 36 of the book and periodical pressing plate assembly 30 upwards, the two transparent pressing plates 32 disposed in the rotating frame 36 and rotatably connected to the side rods 362 are lifted to a certain height along with the rotating frame 36, so as to form a certain height difference and a corresponding space between the book and periodical opening assembly 20 and the book and periodical pressing plate assembly 30, the user can place a book to be scanned on the book and periodical opening assembly 20, and press the two transparent pressing plates 32 of the lifted book and periodical pressing plate assembly 30 on corresponding pages of the book, respectively, so that the pages in contact with the two transparent pressing plates 32 are pressed flat, and then the image capturing assembly 40 is started to photograph the pages, thereby scanning the pages can be achieved.

After the photos of the two pages are taken, the user lifts the rotating frame 36 upwards again, then turns the pages of the book, presses the two transparent pressing plates 32 on the corresponding pages of the book respectively, and then starts the image capturing assembly 40 to take photos of the pages, so that the scanning work of the subsequent pages can be realized.

Figure 12 illustrates a plan view, partially in section and from the front of a book scanner according to one embodiment of the present invention.

In the configuration shown in this view, the two transparent pressing plates 32 of the book and periodical flattening assembly 30 are disposed adjacent to the corresponding left and right supporting plates 272 and 274 of the book and periodical opening assembly 20. The book and periodical opening assembly 20 is in an intermediate position, that is: with the plane where the axis of the central pivot 262 and the axis of the spine support shaft 267 are located as a symmetry axis, the left first swing axle 268 is symmetrical to the right first swing axle 263, the left second swing axle 261 is symmetrical to the right second swing axle 265, and the gap adjusting device 29 is also in the upright state.

Fig. 13-15 illustrate a book scanning device according to an embodiment of the present invention.

Before scanning a specific book 90, the gap between the left support plate 272 and the right support plate 274 of the book opening assembly 20 needs to be adjusted to fit, so that the gap between the bottom ends of the two support plates 272, 274 is consistent with the thickness of the book, and the spine of the book can be placed in the gap. For this reason, the user needs to perform gap adjustment by the following actions:

referring to fig. 4, 5 and 5a, in the original state, the pushing block 298 of the gap adjusting device 29 is located at the uppermost end of the screw 2964, and under the stretching action of the stretching spring 291, the left first swing shaft 268 and the right first swing shaft 263 are drawn close to each other, so that the left first swing shaft 268 abuts against the left inclined contact surface 246, and the right first swing shaft 263 abuts against the right inclined contact surface 248. At this time, the gap between the left and right support plates 272 and 274 is minimized, and the left and right adjustment brackets 292 and 294 of the gap adjusting device 29 together clamp and press the pushing block 298 against the nut 2966.

When the gap between the left support plate 272 and the right support plate 274 needs to be adjusted to be consistent with the thickness of the book, the right first swing axle 263 abuts against the right inclined contact surface 248 and cannot swing further to the left, so that the user only needs to press the left support plate 272 towards the left lower side, so that the left parallelogram linkage 290 swings towards the left, that is, the left first swing axle 268, the left second swing axle 261, the corresponding pivot connection piece 28 and the left connection plate 21 swing towards the left synchronously, so that the left support plate 272 installed on the two left connection plates 21 also swings towards the left synchronously, and the gap between the left support plate 272 and the right support plate 274 is increased. In the process of adjusting the gap, the included angle between the left adjusting frame 292 and the right adjusting frame 294 of the gap adjusting device 29 becomes larger, the left adjusting frame 292 and the right adjusting frame 294 no longer have a pushing effect on the pushing block 298, so under the action of gravity, the pushing block 298 falls down along the screw 2964 to a position where the pushing block 292 and the right adjusting frame 294 are kept in contact, and a user only needs to screw the nut 2966 down to be tightly abutted against the top of the pushing block 298, so that the pushing block 298 is prevented from being pushed upwards to reduce the gap under the stretching action of the tension spring 291, and the pushing block 298 can be prevented from falling off from the top of the screw 2964.

When it is desired to reduce the gap for scanning thinner books, the user only needs to slowly loosen the nut 2966, so that the pushing block 298 is pushed by the left and right adjustment brackets 292 and 294 to move upward, thereby reducing the gap.

As can be seen from the above description, when the gap between the left and right support plates 272 and 274 is adjusted for a particular book thickness, the gap remains constant throughout the scanning of the book. And as the book scanning process proceeds, the left support plate 272 and the right support plate 274 of the book opening assembly 20 swing synchronously from the right side to the left side of the pivot mounting plate 24, and the respective angles of the left support plate 272 and the right support plate 274 with respect to the left and right horizontal contact surfaces 242 and 244 are kept constant during the swing, thereby ensuring that any scanned pages always have the same angle (angle with respect to the left and right horizontal contact surfaces 242 and 244) during the book scanning process.

The process of scanning a book by the book scanner provided by the present invention is described below with reference to fig. 13 to 15.

For clarity, the left and right connecting plates and image capture assembly are not shown in the book scanner configuration shown in fig. 13-15.

As shown in fig. 13, the book 90 is placed between the left and right trays 272 and 274, and the book 90 is flipped open such that the left page 92 of the book 90 fits over the left tray 272 and the right page 94 fits over the right tray 274. The thickness of the left page 92 is much less than the thickness of the right page 94 when the book 90 is initially scanned. In other words, the weight of the right page 94 is much greater than the weight of the left page 92, so that under the action of gravity, the set of left and right parallelogram linkages 290, 292 swing synchronously to the right to an angle relative to the vertical (i.e., the angle at which the left first swing axis 268 abuts against the left inclined contact surface 246), such that the book gap between the left page 92 and the right page 94 of the book 90 is located directly above the central pivot 262.

The user then rotates the book and periodical flattening assembly 30 downward such that the left page 92 is flattened between the left support plate 272 and the corresponding transparent platen 32 and the right page 94 is flattened between the right support plate 274 and the corresponding transparent platen 32.

Subsequently, the user may activate the image capture component 40 (see fig. 1, 3) so that the corresponding camera 48 may take pictures of the left and right pages 92, 94.

As the scanning process progresses, the thickness of the left page 92 increases and the thickness of the right page 94 gradually decreases. In each scanning process, because the book and periodical flattening assembly 30 is rotatably mounted on the support assembly 10 (refer to fig. 1), the two transparent pressing plates 32 can only swing up and down but cannot move left and right, in other words, the middle connecting part of the two transparent pressing plates 32 is always located right above the central pivot 262, so that in the process that the middle connecting part of the two transparent pressing plates 32 is inserted into the book gap between the left page 92 and the right page 94, the middle connecting part of the two transparent pressing plates 32 generates a lateral offset effect on the book 90, and the left and right parallelogram link mechanisms 290, 292 are driven to synchronously swing left, so that the book gap in each scanning process can be exactly located right above the central pivot 262, thereby ensuring that the left page 92 and the right page 94 to be scanned are always symmetrically distributed on the left and right sides of the central pivot 262 in each scanning process, and in the whole scanning process, the heights of the pages at two sides to be scanned are always kept unchanged.

Fig. 14 shows the scanned state of the book 90 with the same thickness of the left page 92 and the right page 94. At this time, the left and right pages 92 and 94, the left and right pallets 272 and 274, and the left and right parallelogram linkages 290 and 292 are all symmetrical about the same vertical plane (i.e., a vertical plane passing through the center pivot 262 and the center of the intermediate connection portion of the two transparent platens 32).

Fig. 15 shows a scanning state in which the entire scanning process is about to be completed. As can be seen from the figure: the thickness of the left page 92 is much greater than the thickness of the right page 94. Indicating that most of the pages of the book have been scanned. At this time, the pages to be scanned are also symmetrically distributed on the left and right sides of the central pivot 262. The two parallelogram linkages 290, 292 are offset to the left of the central pivot 262.

The preferred embodiments described above show that: in the invention, a left and a right parallelogram link mechanisms which form a certain angle with each other are adopted, so that in the whole book scanning process, the angles of a left and a right supporting plates which are arranged on the corresponding parallelogram link mechanisms relative to a left (right) horizontal contact surface of a pivot mounting plate are always kept constant in the swinging process, the left and right pages of a book which are arranged on the left and the right supporting plates and are pressed by corresponding transparent pressing plates are always symmetrically distributed on the left and the right sides of a central pivot, and in the whole scanning process, the heights of the two pages to be scanned are always kept constant. This means that, in the whole scanning process, when the camera of the image capturing component shoots the page of the book, the distance (focal length) between the page and the camera is kept unchanged, so that the shooting can be performed in fixed focus, and then the page photo of the book with higher consistency can be obtained, so as to realize the accurate cutting of the page photo of the book, and further avoid cutting each page photo one by one, finally reduce the processing time of the later-stage image software, and improve the image processing efficiency.

Preferably, referring to fig. 1, 3 and 19, the book scanner 100 further includes an auxiliary lighting assembly 50 for providing sufficient illumination to the left and right pages of the book, thereby forming a higher quality photograph of the pages of the book. The auxiliary lighting assembly 50 includes a horizontal backing plate 58 fixed to the top transverse post 17 of the rack assembly 10, a longitudinal support plate 52 disposed on the horizontal backing plate 58, a transverse support plate 54 disposed on top of the longitudinal support plate 52, and a light source 56 disposed at an end of the transverse support plate 54 and having a power cord 562.

Further preferably, a side surface of the transverse support plate 54 is provided with a wire slot 542, a side surface of the longitudinal support plate 52 is provided with a wire slot 522, and a power wire 562 of the lamp source 56 is laid in the two wire slots 542 and 522. Preferably, the longitudinal support plate 52 is pivotally connected to the horizontal spacer block 58 by a hinge 53. The longitudinal support plate 52 can be arranged perpendicular to or parallel to the horizontal spacer 58 by operating the hinge 53, so that the longitudinal support plate 52, the lateral support plate 54 and the light source 56 can be folded toward the rack assembly 10. Therefore, when the book scanner 100 does not work, the auxiliary lighting assembly 50 is accommodated, and the volume of the whole book scanner 100 is reduced.

Preferably, referring to fig. 1 and 4, a tension spring 63 is disposed between the rear upright post 11 of the stand assembly 10 and the rear rod 368 of the rotating rack 36 of the book and periodical flattening assembly 30. Because the rotating frame 36 is rotatably disposed between the two rear vertical posts 11, under the tensile force of the tension spring 63, the rotating frame 36 swings upward to a certain position relative to the rear vertical posts 11, so that the whole book and periodical flattening assembly 30, especially the two transparent pressing plates 32, are vertically spaced from the left and right supporting plates 272 and 274 of the book and periodical opening assembly 20, and books can be placed on the left and right supporting plates 272 and 274. When scanning, the user overcomes the tension force of the tension spring 63 to rotate the rotating frame 36 downwards, so that the two transparent pressing plates 32 press the pages of the book evenly, and after the user finishes each scanning action, the rotating frame 36 and the two transparent pressing plates 32 mounted on the rotating frame automatically swing upwards to a certain position, so that a certain space is reserved for the user to manually turn pages.

Preferably, referring to fig. 1 and 11, a front baffle 66 is disposed between the two front uprights 18 and the front transverse upright 12 of the bracket assembly 10; the bottom of the front baffle plate 66 is rotatably provided with a locking plate 82, and the locking plate 82 is longitudinally provided with a longitudinal groove 822 and a transverse notch 824 which is positioned at the top of the locking plate 82 and communicated with the longitudinal groove 822; the holding rod 364 of the rotating frame 36 of the book and periodical flattening assembly 30 is provided with a handle lock 84 that can be inserted into the transverse notch 824 to lock the locking tab 82 to the holding rod 364.

The user presses the holding rod 364 of the book and periodical flattening assembly 30 downward and then rotates the locking tab 82 to the upright position, so that the shaft portion (not shown) of the handle lock 84 can be inserted into the transverse notch 824, and the locking tab 82 is locked to the holding rod 364 by tightening the handle lock 84. Thus, when the book scanner is not in operation, the rotating rack 36 can be pressed to a lower position, thereby reducing the volume of the whole book scanner.

In order to facilitate the user to adjust the parameters of the camera of the image capturing assembly for a specific book, it is also necessary to ensure that the two transparent pressing plates 32 of the book pressing assembly 30 are always in a state of pressing the pages on the left and right sides of the book, and this can be achieved by locking the handle locking piece 84 and the locking piece 82 with each other.

In addition, when the two transparent pressing plates 32 of the book and periodical flattening assembly 30 are always in a state of flattening the pages on the left and right sides of the book, since the thicknesses of different books may be different, the angle of the rotating frame 36 relative to the horizontal plane may be different, that is, the holding rod 364 of the rotating frame 36 may have different heights, and therefore, the heights of the handle locking members 84 are also different, and in order to lock the handle locking members 84 and the locking plates 82 at different heights, the shaft portions of the handle locking members 84 may be disposed in the longitudinal grooves 822 of the locking plates 84. In other words, regardless of the height of the handle lock 84, the shaft portion thereof can be received within the longitudinal channel 822, thereby locking the locking tab 84 to the grip rod 364.

Further preferably, a wireless mouse 3642 is arranged on the holding rod. When a user scans a book, the holding rod 364 can be held so that the wireless mouse 3642 can be operated while the two transparent pressing plates 32 are pressing the pages of the book flat, so as to trigger the camera of the image capturing assembly to take a quick photograph of the pages of the book.

Preferably, the image capturing assembly 40 can be configured to fold relative to the stand assembly 10, thereby reducing the overall size of the book scanner. Specifically, referring to fig. 3, 16-19, a hinge 43 is mounted between the vertical mounting plate 44 and the horizontal mounting plate 42 of the image capture assembly 40 to allow the vertical mounting plate 44 to be folded relative to the horizontal mounting plate 42 toward the inside of the stand assembly 10 into a position parallel to the horizontal mounting plate 42.

Each camera 48 has a power line 484 and a data line 482; a trunking 414 is formed in the side surface of the camera apron 41, a trunking 462 communicated with the trunking 414 is formed in the inclined mounting plate 46, a trunking 442 communicated with the trunking 462 is formed in the vertical mounting plate 44, and a trunking 422 communicated with the trunking 442 is formed in the horizontal mounting plate 42; the power wire 484 and the data wire 482 are laid in the wire grooves 414, 462, 442 and 442; the horizontal mounting plate 42 further has a wire harness receiving chamber 424 and a spring receiving chamber 426 communicating with the wire groove 422, the spring receiving chamber 426 has a tension spring 428 therein, one end of the tension spring is fixed to the side of the spring receiving chamber 426 away from the wire harness receiving chamber 424, and the other end thereof is hooked to the power line 484 and the data line 482.

When the vertical mounting plate 44 of the image capturing module 40 is not folded horizontally with respect to the horizontal mounting plate 42, the power wire 484 and the data wire 482 and the tension spring 428 laid in the horizontal mounting plate 42 are in the state shown in fig. 18, that is: the tension spring 428 is in a maximum tension state, and the power wire 484 and the data wire 482 are basically laid in the wire casing 422; when the vertical mounting plate 44 is folded to a horizontal state with respect to the horizontal mounting plate 42, the power wire 484 and the data wire 482 and the tension spring 428 laid in the horizontal mounting plate 42 are in a state shown in fig. 17, that is: the tension spring 428 is in a state of minimal tension, and the power wire 484 and the data wire 482 are tensioned by the tension spring 428 and extend from the wire trough 422 into the wire harness receiving cavity 424.

This configuration allows the power wire 484 and data wire 482 in both panels to have a margin length when the vertical mounting plate 44 is folded laterally relative to the horizontal mounting plate 42, thereby preventing the power wire 484 and data wire 482 from being torn during folding of the mounting plates.

Preferably, referring to fig. 6 and 11, an opening 2722 is formed at a position corresponding to the gap adjusting device 29 at the bottom of the left supporting plate 272 of the book opening assembly 20, and correspondingly, an opening 2742 is also formed at a position corresponding to the gap adjusting device 29 at the bottom of the right supporting plate 274; the openings 2722, 2742 collectively define an operating space so that a user can operate the gap-setting device 29 with a hand or other tool.

In order to further improve the scanning effect during the scanning of the books by the book scanner according to the embodiment of the present invention, the books need to be prevented from sliding between the left and right support plates of the book opening assembly 20 during the scanning process, and for this reason, referring to fig. 6 to 9, page holding assemblies 2723 may be disposed on both the left support plate 272 and the right support plate 274.

Each page holding assembly 2723 includes:

a positioning block 2726 having an abutting plate 27262, wherein a limiting groove 272622 is longitudinally formed in the bottom surface of the abutting plate 27262, a sliding groove 27264 is further longitudinally formed in the bottom of the limiting groove 272622, and a longitudinally extending positioning flange 27266 is formed on the top surface of the abutting plate 27262 in a protruding manner;

the book page holding frame 2728 is provided with a bottom wall 27282, a pair of side walls 27284 formed by bending from the left end and the right end of the bottom wall 27282, and a pressing plate 27286 formed by bending from the tail end of each side wall 27284 outwards, a through hole 272822 is formed in the bottom wall 27282, and the length of the pressing plate 27286 in the direction parallel to the longitudinal direction of the limiting groove 272622 is greater than that of each side wall 27284;

an adjusting screw 2721 extending through the through hole 272822 and the sliding groove 27264 into the limiting groove 272622; and

a rectangular nut 27777 disposed in the limiting groove 272622 and threadedly coupled to the adjustment screw 2721.

A positioning groove 2724 is longitudinally formed in the top of the left supporting plate 272 of the book and periodical opening assembly; the positioning block 2726 of the page holding assembly 2723 is attached and fixed to the back of the left support plate 272, and the positioning flange 27266 extends into and is engaged with the positioning groove 2724, so that the positioning block 2726 is prevented from moving laterally relative to the left support plate 272; the page holder 2728 is disposed in the positioning slot 2724 from the front side of the left support plate 272 (i.e., the surface on which the book is placed), and the pressing plate 27286 of the page holder 2728 abuts against the front side of the left support plate 272; the adjusting screw 2721 sequentially penetrates through the through hole 272822 and the sliding groove 27264 to extend into the limiting groove 272622 and is in threaded connection with a rectangular nut 27777 arranged in the limiting groove 272622; the adjustment screw 2721 is disposed to be only rotatable within the perforation 272822 and not axially movable relative to the perforation 272822; and the rectangular nut 27777 is configured to slide longitudinally only in the retaining groove 272622 and not rotate in the retaining groove 272622.

The page holding assembly 2723 works as follows: when the user unscrews the adjusting screw 2721 relative to the rectangular nut 27777, the adjusting screw 2721 and the page holder 2728 are synchronously separated from the left supporting plate 272 in the axial direction of the adjusting screw 2721, so that a gap is formed between the pressing plate 27286 and the front face of the left supporting plate 272, and since the length of the pressing plate 27286 in the direction parallel to the longitudinal direction of the limiting groove 272622 is greater than the length of each side wall 27284, the cover edge of the book can be inserted into the gap; subsequently, when the user screws the adjusting screw 2721 with respect to the rectangular nut 27777, the adjusting screw 2721 and the page holder 2728 are synchronously close to the left supporting plate 272 in the axial direction of the adjusting screw 2721, so that the pressing plate 27286 finally presses the cover against the front surface of the left supporting plate 272, thereby fixing the cover of the book, and further improving the scanning effect.

Meanwhile, as the rectangular nut 27777 can slide longitudinally in the limiting groove 272622, the adjusting screw 2721 connected with the rectangular nut 27777 in a threaded manner and the corresponding page fixing frame 2728 can also move longitudinally, so that covers of books of different sizes can be fixed, and the use flexibility of the book scanner is finally improved.

When the book scanner provided by the invention scans books, in order to prevent the books from sliding between the left and right supporting plates of the book opening assembly 20, the front cover and the back cover of the books can be respectively fixed, and even one of the front cover and the back cover can be fixed.

Similarly, the top of the right support plate 274 may also be longitudinally slotted to provide the page holder assembly 2723 as described above.

Referring to fig. 10 and 12, in order to increase the structural strength between the left pivot shaft 264 and the left second swing shaft 261 and reduce the deformation of the left parallelogram linkage 290 during rotation, a pivot reinforcing device 70 may be provided, which includes a first reinforcing plate 72 having two first fastening grooves 722 formed therein and a second reinforcing plate 74 having two second fastening grooves 742 formed therein; the first reinforcing plate 72 and the second reinforcing plate 74 are tightly fastened together, so that the left pivot 264 is tightly clamped between one of the first clamping grooves 722 and the corresponding second clamping groove 742, and the left second swing shaft 261 is tightly clamped between the other first clamping groove 722 and the corresponding second clamping groove 742, so that the left pivot 264, the left second swing shaft 261 and the two reinforcing plates 72 and 74 form a structural whole together, and further, the deformation of the left pivot 264 and the left second swing shaft 261 is reduced or avoided.

Similarly, the right pivot and the right second swing shaft may be provided with corresponding pivot reinforcements, thereby enhancing the overall structural strength of the right parallelogram linkage.

Further preferably, referring to fig. 10 and 12, a handle 71 is disposed on the first reinforcing plate 72 of the pivot reinforcing device 70 for clamping the left pivot 264 and the left second swing axle 261, so as to facilitate easy and labor-saving adjustment of the left parallelogram linkage and the right parallelogram linkage by a user.

Preferably, for each pivot mounting plate 24, the angle between the left angled contact surface 246 and the right angled contact surface 248 is 90 °, the angle between the left angled contact surface 246 and the left horizontal contact surface 242 is 135 °, and the angle between the right angled contact surface 248 and the right horizontal contact surface 244 is also 135 °; and the angle between the two transparent press plates 32 is 90 deg..

Preferably, referring to fig. 4, at least two rollers 27 are provided on the spine support shaft 267 for supporting the spine of the book to be scanned on the arc surfaces of the two rollers 27.

Preferably, the distance between the left pivot 264 and the center pivot 262 of the book opening assembly 20 is the same as the distance between the right pivot 266 and the center pivot 262.

Preferably, referring to fig. 4 and 6, a reinforcing block 34 is disposed between the two transparent pressing plates 32 for enhancing the connection strength between the two transparent pressing plates 32.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

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