阅读说明：本技术 一种新型口腔张口用支撑系统 (Novel oral cavity is opened a mouthful and is used braced system ) 是由 冯琨 许健 张志愿 于 2021-02-04 设计创作，主要内容包括：本发明公开了一种新型口腔张口用支撑系统,包括分体式口腔支架和支撑工具,所述的分体式口腔支架包括支撑板以及上下两个咬痕块座,支撑板的上下端均设置有块座安装头,咬痕块座上开设有用于与块座安装头配合插装的第一块座插口；所述支撑工具包括支撑机构和张口驱动机构,所述支撑机构包括支撑横架,支撑横架前端的支撑臂上安装有夹爪安装架,夹爪安装架的上下端分别转动安装有夹爪机构。本发明公开了分体式口腔支架,实际操作时配合支撑工具一起使用,咬痕块座进入口腔后,在支撑工具的作用下,咬痕块座可撑开口腔到任意患者所需目标张口度大小,撑开过程模拟人正常张口的过程,更加自然舒适,操作使用方便,有利于医护人员快速安装口腔支架。(The invention discloses a novel supporting system for mouth opening, which comprises a split type mouth support and a supporting tool, wherein the split type mouth support comprises a supporting plate and an upper undercut block seat and a lower undercut block seat, the upper end and the lower end of the supporting plate are respectively provided with a block seat mounting head, and the undercut block seat is provided with a first block seat socket which is used for being matched and inserted with the block seat mounting head; the supporting tool comprises a supporting mechanism and an opening driving mechanism, the supporting mechanism comprises a supporting cross frame, a clamping jaw mounting frame is installed on a supporting arm at the front end of the supporting cross frame, and a clamping jaw mechanism is installed at the upper end and the lower end of the clamping jaw mounting frame in a rotating mode respectively. The invention discloses a split type oral cavity bracket which is matched with a supporting tool for use in practical operation, after a bite mark block seat enters an oral cavity, the bite mark block seat can be used for opening the oral cavity to the required target opening degree of any patient under the action of the supporting tool, the opening process simulates the normal opening process of a human, and the split type oral cavity bracket is more natural and comfortable, is convenient to operate and use, and is beneficial to the rapid installation of the oral cavity bracket by medical personnel.)

1. The utility model provides a novel oral cavity is opened a mouthful and is used braced system which characterized in that: the split type oral cavity support (800) comprises a split type oral cavity support (800) and a supporting tool, wherein the split type oral cavity support (800) comprises a supporting plate (81) and an upper undercut block seat and a lower undercut block seat (82), the upper end and the lower end of the supporting plate (81) are respectively provided with a block seat mounting head (812), and the undercut block seat (82) is provided with a first block seat socket (822) which is matched and inserted with the block seat mounting head (812);

the supporting tool comprises a supporting mechanism (100) and an opening driving mechanism (200), the supporting mechanism (100) comprises a supporting cross frame (11), a clamping jaw mounting frame (151) is mounted on a supporting arm (13) at the front end of the supporting cross frame (11), clamping jaw mechanisms (152) are respectively rotatably mounted at the upper end and the lower end of the clamping jaw mounting frame (151), a block seat inserting head (1524) is arranged at the front end of each clamping jaw mechanism (152), and a second block seat inserting opening (821) used for being matched and inserted with the block seat inserting head (1524) is formed in the occlusion block seat (82);

open mouthful actuating mechanism (200) include with support crossbearer (11) horizontal sliding fit's drive frame (21) and drive frame (21) front end installation fixed cam mechanism (25), cam mechanism (25) have a pair of oblique lateral wall of drive and a pair of horizontal lateral wall of longitudinal symmetry, clamping jaw mechanism (151) on rotate and install gyro wheel (1525) that are used for contacting with the oblique lateral wall of drive and horizontal lateral wall cooperation, support mounting seat (26) are installed to the front end of cam mechanism (25), are provided with support cartridge head (261) on support mounting seat (26), offer on backup pad (81) be used for with support cartridge head (261) cooperation cartridge plate body location interface (811).

2. The novel oral-opening support system of claim 1, wherein: the clamping jaw mounting rack (151) comprises two isosceles trapezoid clamping jaw mounting base plates which are fixedly arranged on the supporting arms (13), the clamping jaw mechanism (152) comprises a first clamping arm (1521), a second clamping arm (1522) and an end connecting arm (1523), two ends of the end connecting arm (1523) are respectively connected with the ends of the first clamping arm (1521) and the second clamping arm (1522) in a rotating way, the block seat inserting head (1524) is integrally arranged on the end connecting arm (1523), the other end of the first clamping arm (1521) is rotatably connected with the end part of the long edge of the clamping jaw mounting seat plate, the other end of the second clamping arm (1522) is rotatably connected with the end part of the wide side of the clamping jaw mounting seat plate, the oblique edges of the first clamping arm (1521), the second clamping arm (1522), the end connecting arm (1523) and the clamping jaw mounting seat plate form a parallelogram link mechanism, and the roller (1525) is rotatably mounted on the second clamping arm (1522).

3. The novel oral-opening support system of claim 2, wherein: the front end fixedly connected with T type bedplate (22) of drive frame (21), the bottom fixedly connected with bottom guide bar (24) of T type bedplate (22), bottom guide bar (24) slip cartridge in supporting horizontal frame (11) the horizontal guide holder (16) of installation, the top both sides of T type bedplate (22) are fixedly connected with top guide bar (23) respectively, the left and right sides fixed mounting of clamping jaw mounting bracket (151) has clamping jaw guide holder (153), top guide bar (23) slip cartridge is in clamping jaw guide holder (153).

4. The novel oral-opening support system of claim 3, wherein: an adjusting rack is also fixedly arranged on the top guide rod (23), and an opening degree adjusting mechanism (27) for adjusting the unfolding size of the cam mechanism (25) is arranged on the adjusting rack;

the cam mechanism (25) comprises a cam end seat (253) at the front end, a cam inclined arm (251) hinged to the upper end and the lower end of the cam end seat (253) and a cam horizontal arm (252) hinged to the rear end of the cam inclined arm (251), the outer side wall of the cam inclined arm (251) is a driving inclined side wall, and the outer side wall of the cam horizontal arm (252) is a horizontal side wall;

the opening degree adjusting mechanism (27) comprises a central screw rod (274), an adjusting disc (271), a first bevel gear (2711) and a second bevel gear (2741) which are rotatably arranged on an adjusting rack, the front end of the central screw rod (274) is rotatably matched in a cam end seat (253), a pushing block (275) is sleeved at the front section of the central screw rod (274) in a threaded matching manner, a pair of pushing inclined walls which are vertically and symmetrically arranged are arranged at the front end of the pushing block (275), the end part of the cam horizontal arm (252) is provided with a cam inclined wall jointed with the pushing inclined wall, the cam inclined wall is in sliding fit with the pushing inclined wall, the second bevel gear (2741) is sleeved and fixed on the central screw rod (274), the adjusting disk (271) is rotatably installed on the adjusting rack, a first bevel gear (2711) is installed and fixed at the shaft end of the adjusting disk (271), and the first bevel gear (2711) is meshed and connected with the second bevel gear (2741).

5. The novel oral-opening support system of claim 4, wherein: the adjusting rack comprises two cross supports (272) and a top longitudinal beam (273) fixedly connected with the tops of the two cross supports (272), an adjusting disc (271) is rotatably mounted on the top longitudinal beam (273), the left end and the right end of each of the two cross supports (272) are sleeved and fixed on the corresponding top guide rod (23), and the bottoms of the two cross supports (272) are sleeved and fixed on the bottom guide rod (24);

still be connected between cross support (272) and the cam end seat (253) of front end and be fixed with a pair of inside guide bar (254), sliding sleeve is equipped with displacement regulating plate (263) on inside guide bar (254), cam sloping arm (251) rear end is articulated through cam round pin axle (255) and cam horizontal arm (252), the trailing flank and the cam round pin axle (255) contact of displacement regulating plate (263), the preceding terminal surface of displacement regulating plate (263) still fixed mounting have a pair of displacement regulation guide arm (262), the front end of displacement regulation guide arm (262) passes cam end seat (253) and with support mount pad (26) fixed connection.

6. The novel oral-opening support system of claim 4, wherein: still fixed mounting has opening metering mechanism (28) on top guide bar (23), opening metering mechanism (28) are including metering disc (281) and fixed suit metering frame (282) on top guide bar (23), the installation is fixed with reduction gear (283) on metering frame (282), the one end of reduction gear (283) is connected with the center pin of metering disc (281), the other end of reduction gear (283) is connected with the transition axle, the tip of transition axle passes through shaft coupling (284) and is connected with the rear end of central screw (274), it is provided with measurement numerical value (2811) to distribute on the circumference outer wall of metering disc (281).

7. The novel oral-opening support system of claim 6, wherein: still distribute on the circumference outer wall of metering disc (281) and seted up a plurality of damping draw-in grooves (2812), damping draw-in groove (2812) are located between adjacent measurement numerical value (2811), be fixed with damping seat (285) on top guide bar (23), set up gyro wheel holding chamber (286) on damping seat (285), seted up bar slant axle slot (288) on the front and back lateral wall in gyro wheel holding chamber (286), be provided with damping roller (287) in gyro wheel holding chamber (286), two central axle heads of damping roller (287) are the activity respectively and are set up in corresponding bar slant axle slot (288), the circumference outer wall of damping roller (287) and the circumference outer wall contact of metering disc (281).

8. The novel oral-opening support system of any one of claims 1 to 7, wherein: the bottom of supporting crossbearer (11) still extends there is bottom handle (14), and the cover is equipped with bottom handle shell (700) on bottom handle (14), the rear end of supporting crossbearer (11) still upwards extends and has middle handle (12), and middle handle (12) are located drive frame (21), and middle handle (12) are gone up the cover and are equipped with middle handle shell (400), the back side of drive frame (21) still overlaps and is equipped with frame handle shell (300).

9. The novel oral-opening support system of any one of claims 1 to 7, wherein: the outside of top guide bar (23) still overlaps and is equipped with middle housing (500) that is used for the opening degree adjustment mechanism (27) that covers, the outside of clamping jaw mounting bracket (151) still overlaps and is equipped with clamping jaw shroud (600).

Technical Field

The invention relates to the technical field of dental tools, in particular to a novel oral cavity opening supporting system.

Background

In oral diagnosis and condition evaluation, the degree of mouth opening is a very critical parameter, and the prior art generally needs medical staff to roughly measure the width by means of a graduated scale or fingers; partial oral surgery or corresponding oral operation usually requires a patient to maintain a certain mouth opening degree, and a reliable oral support tool is lacked; some scenes need to accurately reproduce a certain degree of aperture, and the requirement of position reproduction in time or space dimension is met.

The functional requirements are focused on accurate measurement, reliable support and position reproduction. The prior art has poor measurement precision and operability; the oral cavity support in the prior art is usually a simple fixed support, for example, the oral cavity support is classified into a large size, a medium size and a small size, the size span is large, the personalized matching of part of patients is insufficient, and meanwhile, the comfort degree of the existing oral cavity support in the placement process is poor; when the fixed bolster carries out repeated support, influence such as patient's wearing method, interlock dynamics repeatedly puts the position precision.

Disclosure of Invention

The present invention is directed to a novel oral cavity support system to solve the above problems of the prior art.

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

a novel supporting system for mouth opening comprises a split type mouth support and a supporting tool, wherein the split type mouth support comprises a supporting plate and an upper undercut block seat and a lower undercut block seat, block seat mounting heads are arranged at the upper end and the lower end of the supporting plate, and first block seat sockets for being matched and inserted with the block seat mounting heads are formed in the undercut block seats;

the supporting tool comprises a supporting mechanism and an opening driving mechanism, the supporting mechanism comprises a supporting cross frame, a clamping jaw mounting frame is mounted on a supporting arm at the front end of the supporting cross frame, clamping jaw mechanisms are respectively rotatably mounted at the upper end and the lower end of the clamping jaw mounting frame, a block seat inserting head is arranged at the front end of each clamping jaw mechanism, and a second block seat inserting opening used for being matched and inserted with the block seat inserting head is formed in the block seat of the biting mark;

the opening driving mechanism comprises a driving frame and a cam mechanism, the driving frame is horizontally matched with the supporting cross frame in a sliding mode, the front end of the driving frame is fixedly installed, the cam mechanism is provided with a pair of driving inclined side walls and a pair of horizontal side walls which are vertically symmetrical, the clamping jaw mechanism is provided with a roller which is matched and contacted with the driving inclined side walls and the horizontal side walls in a rotating mode, a support mounting seat is installed at the front end of the cam mechanism, a support inserting head is arranged on the support mounting seat, and a plate body positioning interface used for being matched and inserted with the support inserting head is arranged on the supporting plate.

As a further scheme of the invention: clamping jaw mounting bracket includes two isosceles trapezoid's clamping jaw installation bedplate, and clamping jaw installation bedplate fixed mounting is on the support arm, clamping jaw mechanism includes first arm lock, second arm lock and tip linking arm, the both ends of tip linking arm rotate with the tip of first arm lock, second arm lock respectively and are connected, and the first an organic whole setting of block seat cartridge is on the tip linking arm, the other end of first arm lock rotates with the long limit tip of clamping jaw installation bedplate to be connected, the other end of second arm lock rotates with the broadside end of clamping jaw installation bedplate to be connected, the hypotenuse of first arm lock, second arm lock, tip linking arm and clamping jaw installation bedplate constitutes parallelogram link mechanism, the gyro wheel rotate and install on the second arm lock.

As a further scheme of the invention: the front end fixedly connected with T type bedplate of drive frame, the bottom fixedly connected with bottom guide bar of T type bedplate, the slip cartridge of bottom guide bar is in the horizontal guide seat of supporting the shelf location, and the top both sides of T type bedplate are fixedly connected with top guide bar respectively, the left and right sides fixed mounting of clamping jaw mounting bracket has clamping jaw guide holder, the slip cartridge of top guide bar is in the clamping jaw guide holder.

As a further scheme of the invention: the top guide rod is also fixedly provided with an adjusting rack, and the adjusting rack is provided with an opening degree adjusting mechanism for adjusting the unfolding size of the cam mechanism;

the cam mechanism comprises a cam end seat at the front end, a cam oblique arm hinged with the upper end and the lower end of the cam end seat and a cam horizontal arm hinged with the rear end of the cam oblique arm, wherein the outer side wall of the cam oblique arm is a driving oblique side wall, and the outer side wall of the cam horizontal arm is a horizontal side wall;

the opening degree adjusting mechanism comprises a central screw, an adjusting disc, a first bevel gear and a second bevel gear which are rotatably installed on an adjusting rack, the front end of the central screw is rotatably matched in a cam end seat, the front section of the central screw is sleeved with a pushing block in a threaded matching manner, the front end of the pushing block is provided with a pair of pushing inclined walls which are symmetrically arranged up and down, the end part of a cam horizontal arm is provided with a cam inclined wall attached to the pushing inclined walls, the cam inclined wall is in sliding fit on the pushing inclined wall, the second bevel gear is sleeved and fixed on the central screw, the adjusting disc is rotatably installed on the adjusting rack, the shaft end of the adjusting disc is fixedly provided with the first bevel gear, and the first bevel gear is meshed with the second bevel gear.

As a further scheme of the invention: the adjusting machine frame comprises two cross supports and a top longitudinal beam fixedly connected with the tops of the two cross supports, the adjusting disc is rotatably mounted on the top longitudinal beam, the left end and the right end of each of the two cross supports are fixedly sleeved on the corresponding top guide rod, and the bottoms of the two cross supports are fixedly sleeved on the bottom guide rod;

still be connected between the cross support of front end and the cam end seat and be fixed with a pair of inside guide bar, sliding fit has the displacement regulating plate on the inside guide bar, and cam sloping arm rear end is articulated through cam round pin axle and cam horizontal arm, and the trailing flank of displacement regulating plate contacts with cam round pin axle, and the preceding terminal surface of displacement regulating plate still fixed mounting has a pair of displacement regulation guide arm, and the front end of displacement regulation guide arm passes cam end seat and with support mounting seat fixed connection.

As a further scheme of the invention: still fixed mounting has opening metering mechanism on the guide bar of top, and opening metering mechanism includes the measurement dish and fixed cover dress measurement frame on the guide bar of top, and the installation is fixed with the reduction gear on the measurement frame, the one end of reduction gear and the center pin connection of measurement dish, and the other end of reduction gear is connected with the transition axle, and the tip of transition axle passes through the shaft coupling and is connected with the rear end of central lead screw, it is provided with the measurement numerical value to distribute on the circumference outer wall of measurement dish.

As a further scheme of the invention: still distribute on the circumference outer wall of metering disc and seted up a plurality of damping draw-in grooves, the damping draw-in groove is located between the adjacent measurement numerical value, be fixed with the damping seat on the guide bar of top, set up gyro wheel holding chamber on the damping seat, seted up bar slant axle socket on the lateral wall around the gyro wheel holding chamber, gyro wheel holding intracavity is provided with the damping gyro wheel, and two central axle heads of damping gyro wheel are movable respectively and are set up at the bar slant axle socket that corresponds, the circumference outer wall of damping gyro wheel and the circumference outer wall contact of metering disc.

As a further scheme of the invention: the bottom of the supporting cross frame is further extended with a bottom handle, the bottom handle is sleeved with a bottom handle shell, the rear end of the supporting cross frame is further extended upwards with a middle handle, the middle handle is located in the driving frame, the middle handle is sleeved with a middle handle shell, and the rear side of the driving frame is further sleeved with a frame handle shell.

As a further scheme of the invention: the outside of top guide bar still overlaps the middle housing that is used for the opening degree adjustment mechanism that covers, the outside of clamping jaw mounting bracket still overlaps and is equipped with the clamping jaw shroud.

Compared with the prior art, the invention has the beneficial effects that: compared with the existing bracket with fixed size, the split type oral bracket is difficult to wear and take down by a patient and poor in comfort, and is matched with a supporting tool for use in practical operation; the supporting tool also comprises an opening degree adjusting mechanism and an opening degree metering mechanism, and split type oral cavity supports with different sizes are configured according to the opening degrees with different sizes, so that the requirements of various patients on different opening degrees can be met; in addition, the opening degree of the patient can be accurately measured through the opening degree adjusting mechanism, and the operability is strong; the support tool and the split type oral cavity support are in plug-in connection through the physical interfaces with accurate positions, are convenient to disassemble and assemble, and are beneficial to medical workers to quickly assemble the split type oral cavity support.

Drawings

FIG. 1 is a schematic perspective view of a novel oral cavity opening support system;

FIG. 2 is a schematic structural view of the novel oral cavity support system with the outer shell removed;

FIG. 3 is a schematic diagram of a three-dimensional explosion structure of a split-type oral stent in a novel oral cavity mouth-opening supporting system;

FIG. 4 is a schematic view of the working principle of the split-type oral cavity bracket in the novel oral cavity mouth-opening supporting system;

FIG. 5 is a schematic perspective view of a mouth opening driving mechanism in the novel oral cavity mouth opening supporting system;

FIG. 6 is a schematic side view of a cam mechanism of the novel oral cavity opening support system;

FIG. 7 is a schematic structural view of the front end face of a pushing block in another connection mode of the novel oral cavity mouth opening supporting system;

FIG. 8 is a schematic perspective view of a novel oral cavity opening support system with an opening drive mechanism mounted on a support plate;

FIG. 9 is a schematic perspective view of an opening degree measuring mechanism in the novel oral cavity opening degree supporting system;

FIG. 10 is an enlarged schematic structural view of an opening degree metering mechanism A in the novel oral cavity opening supporting system;

FIG. 11 is a schematic perspective view of a supporting mechanism of the novel oral cavity opening supporting system;

FIG. 12 is a schematic side view of a jaw mechanism of the novel oral support system;

FIG. 13 is a schematic perspective view of a supporting mechanism of the novel oral cavity opening supporting system after an undercut block seat is installed;

FIG. 14 is a schematic view of the operation of a novel oral cavity opening support system;

FIG. 15 is a schematic view of the operation principle of the jaw mechanism in the novel oral cavity opening supporting system;

fig. 16 is a schematic view of the action principle of the mouth-opening degree adjusting mechanism in the novel oral cavity mouth-opening supporting system.

In the figure: 100-support mechanism, 11-support cross frame, 12-middle handle, 13-support arm, 14-bottom handle, 151-jaw mounting rack, 152-jaw mechanism, 1521-first clamping arm, 1522-second clamping arm, 1523-end connecting arm, 1524-block seat inserting head, 1525-roller, 1526-reset spring, 153-jaw guide seat, 16-transverse guide seat, 200-opening drive mechanism, 21-drive frame, 22-T seat plate, 23-top guide rod, 24-bottom guide rod, 25-cam mechanism, 251-cam oblique arm, 252-cam horizontal arm, 2521-micro groove, 253-cam end seat, 254-internal guide rod, 255-cam pin shaft, 256-tensioning spring, 26-bracket mounting seat, 261-bracket plug-in head, 27-opening degree adjusting mechanism, 271-adjusting disc, 2711-first bevel gear, 272-cross bracket, 273-top longitudinal beam, 274-central screw rod, 2741-second bevel gear, 275-pushing block, 2751-dovetail guide groove, 28-opening degree measuring mechanism, 281-measuring disc, 2811-measuring value, 2812-damping clamping groove, 283-reducer, 284-coupler, 285-damping seat, 286-roller containing cavity, 287-damping roller, 300-frame handle shell, 400-middle handle shell, 500-middle shell, 600-clamping jaw cover, 700-bottom handle shell, 800-split oral bracket, 81-supporting plate, 811-board positioning interface, 812-block mounting head, 82-undercut block seat, 821-second block seat socket, 822-first block seat socket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-16, a novel oral cavity opening supporting system includes a split oral cavity support 800 and a supporting tool, referring to fig. 3-4, the split oral cavity support 800 includes a supporting plate 81 and two upper and lower bite mark block seats 82, the upper and lower ends of the supporting plate 81 are respectively provided with a block seat mounting head 812, and the bite mark block seat 82 is provided with a first block seat socket 822 for being inserted into the block seat mounting head 812 in a matching manner;

referring to fig. 1-2 and fig. 5, the supporting tool includes a supporting mechanism 100 and an opening driving mechanism 200, the supporting mechanism 100 includes a supporting cross frame 11, a clamping jaw mounting frame 151 is mounted on a supporting arm 13 at the front end of the supporting cross frame 11, clamping jaw mechanisms 152 are respectively rotatably mounted at the upper end and the lower end of the clamping jaw mounting frame 151, a block seat inserting head 1524 is arranged at the front end of the clamping jaw mechanism 152, and a second block seat inserting port 821 for being matched and inserted with the block seat inserting head 1524 is arranged on the bite block seat 82;

open a mouthful actuating mechanism 200 include with support crossbearer 11 horizontal sliding fit's drive frame 21 and the fixed cam mechanism 25 of drive frame 21 front end installation, cam mechanism 25 has the oblique lateral wall of a pair of drive and a pair of horizontal lateral wall of longitudinal symmetry, gripper mechanism 151 on rotate and install and be used for with the oblique lateral wall of drive and the gyro wheel 1525 of horizontal lateral wall cooperation contact, support mounting seat 26 is installed to cam mechanism 25's front end, is provided with support cartridge head 261 on the support mounting seat 26, offer on the backup pad 81 be used for with the plate body location interface 811 of support cartridge head 261 cooperation cartridge.

Referring to fig. 13-15, the working principle of the present invention is: through the matching of the block seat inserting head 1524 and the second block seat socket 821, the two bite mark block seats 82 are respectively arranged at the front ends of the corresponding clamping jaw mechanisms 152, the support inserting head 261 is matched with the plate body positioning interface 811, the support plate 81 is arranged at the front end of the cam mechanism 25, the two bite mark block seats 82 extend into the oral cavity, a patient bites the corresponding bite mark block seats 82 by teeth, the support tool starts to act to push the driving frame 21 to move forwards along the support cross frame 11, the driving oblique side wall of the cam mechanism 25 pushes the roller 1525 to gradually open the clamping jaw mechanisms 152, when the horizontal side wall of the cam mechanism 25 is contacted with the roller 1525, the clamping jaw mechanisms 152 are opened to the maximum, at the moment, the block seat mounting head 812 at the upper end and the lower end of the support plate 81 is aligned with the first block seat socket 822 on the bite mark block seat 82, the driving frame 21 is continuously pushed, and the block seat mounting head 812 can be completely inserted into the first block seat socket 822, then with the disconnection of a piece seat cartridge head 1524 and second piece seat socket 821, can take out whole supporting tool from split type oral cavity support 800, leave split type oral cavity support 800 in the oral cavity, keep the degree of opening in oral cavity through split type oral cavity support 800. The invention has convenient operation and use, accurate position butt joint and can improve firm support.

Preferably, referring to fig. 12, the jaw mounting rack 151 includes two isosceles trapezoid jaw mounting base plates, the jaw mounting base plates are fixedly mounted on the support arm 13, the jaw mechanism 152 includes a first jaw arm 1521, a second jaw arm 1522 and an end connecting arm 1523, two ends of the end connecting arm 1523 are respectively connected to ends of the first jaw arm 1521 and the second jaw arm 1522 in a rotating manner, the block base inserting head 1524 is integrally disposed on the end connecting arm 1523, the other end of the first jaw arm 1521 is connected to an end of a long edge of the jaw mounting base plate in a rotating manner, the other end of the second jaw arm 1522 is connected to an end of a wide edge of the jaw mounting base plate in a rotating manner, the first jaw arm 1521, the second jaw arm 1522, the end connecting arm 1523 and a bevel edge of the jaw mounting base plate form a parallelogram link mechanism, and the roller 1525 is rotatably mounted on the second jaw mounting base plate.

In order to ensure that the rollers 1525 mounted on the two gripper mechanisms 152 are always in contact with the cam mechanism 25, a return spring 1526 is further connected between the two second clamping arms 1522, and the two rollers 1525 are always in contact with the cam mechanism 25 by the tensile elastic force of the return spring 1526.

Because the oblique edges of the first clamping arm 1521, the second clamping arm 1522, the end connecting arm 1523 and the clamping jaw mounting seat plate form a parallelogram link mechanism, the extension direction of the block seat cartridge head 1524 can be always kept horizontal in the unfolding process of the clamping jaw mechanism 152, namely, the two seam mark block seats 82 can also be always kept parallel.

Preferably, referring to fig. 5, a T-shaped seat plate 22 is fixedly connected to the front end of the driving frame 21, a bottom guide rod 24 is fixedly connected to the bottom end of the T-shaped seat plate 22, the bottom guide rod 24 is slidably inserted into a transverse guide seat 16 installed on the supporting cross frame 11, top guide rods 23 are respectively fixedly connected to two sides of the top end of the T-shaped seat plate 22, jaw guide seats 153 are fixedly installed on the left and right sides of the jaw installation frame 151, and the top guide rods 23 are slidably inserted into the jaw guide seats 153.

Preferably, referring to fig. 5, an adjusting frame is further fixedly mounted on the top guide rod 23, and an opening degree adjusting mechanism 27 for adjusting the expansion size of the cam mechanism 25 is mounted on the adjusting frame;

referring to fig. 6, the cam mechanism 25 includes a cam end seat 253 at the front end, a cam inclined arm 251 hinged to the upper and lower ends of the cam end seat 253, and a cam horizontal arm 252 hinged to the rear end of the cam inclined arm 251, wherein the outer side wall of the cam inclined arm 251 is a driving inclined side wall, and the outer side wall of the cam horizontal arm 252 is a horizontal side wall;

the opening degree adjusting mechanism 27 comprises a central lead screw 274, an adjusting disc 271, a first bevel gear 2711 and a second bevel gear 2741 which are rotatably installed on an adjusting rack, the front end of the central lead screw 274 is rotatably matched in the cam end seat 253, the front section of the central lead screw 274 is sleeved with a pushing block 275 in a threaded matching manner, the front end of the pushing block 275 is provided with a pair of pushing inclined walls which are symmetrically arranged up and down, the end part of the cam horizontal arm 252 is provided with a cam inclined wall jointed with the pushing inclined walls, the cam inclined wall is in sliding fit on the pushing inclined walls, the second bevel gear 2741 is sleeved and fixed on the central lead screw 274, the adjusting disc 271 is rotatably installed on the adjusting rack, the shaft end of the adjusting disc 271 is fixedly provided with the first bevel gear 2711, and the first bevel gear 2711 is meshed with the second bevel.

Obviously, as another alternative, the adjusting disk 271 may be replaced by an adjusting motor mounted on the adjusting frame, and the output shaft end of the adjusting motor is fixedly mounted with the first bevel gear 2711.

Referring to fig. 6, in order to ensure that the cam inclined wall at the end of the cam horizontal arm 252 is always attached to the pushing inclined wall of the pushing block 275, spring pin shafts are respectively arranged on the cam horizontal arm 252 and the pushing block 275 in a penetrating manner, a tension spring 256 is connected between the two spring pin shafts, and the cam inclined wall is always attached to the pushing inclined wall of the pushing block 275 by the elasticity of the tension spring 256;

of course, another connection mode may also be adopted, please refer to fig. 7, a dovetail guide groove 2751 is formed on the inclined pushing wall of the pushing block 275, a dovetail guide block extends from the inclined cam wall at the end of the horizontal cam arm 252, and the dovetail guide block is slidably fitted in the dovetail guide groove 2751, so that the inclined cam wall is always attached to the inclined pushing wall of the pushing block 275.

Because everybody's oral cavity is different in size, consequently need adopt different size of a dimension split type oral cavity support 800, in order to satisfy the demand of different opening degree, cam mechanism 25's size needs correspond the regulation, just can carry out split type oral cavity support 800's normal installation.

Referring to fig. 16, the operation principle of the opening degree adjusting mechanism 27 is as follows: rotating the adjusting disk 271, the first bevel gear 2711 at the shaft end of the adjusting disk 271 drives the second bevel gear 2741 to rotate, the second bevel gear 2741 drives the central screw 274 to rotate, the rotating central screw 274 can drive the pushing block 275 to move, when the pushing block 275 moves left and right, the two cam horizontal arms 252 which can drive the cam mechanism 25 are far away from or close to each other, the distance between the outer side walls of the two cam horizontal arms 252 is set to be H, namely, the opening degree is H, by rotating the adjusting disk 271, the distance of the two designed cam horizontal arms 252 is changed, and the opening degree can be adjusted.

Preferably, the adjusting frame comprises two cross brackets 272 and a top longitudinal beam 273 fixedly connected with the tops of the two cross brackets 272, the adjusting plate 271 is rotatably mounted on the top longitudinal beam 273, the left and right ends of the two cross brackets 272 are sleeved and fixed on the corresponding top guide rods 23, and the bottoms of the two cross brackets 272 are sleeved and fixed on the bottom guide rods 24;

a pair of inner guide rods 254 is further fixedly connected between the cross bracket 272 and the cam end seat 253 at the front end, the pushing block 275 is slidably sleeved on the inner guide rods 254, a displacement adjusting plate 263 is further slidably sleeved on the inner guide rods 254, the rear end of the cam inclined arm 251 is hinged with the cam horizontal arm 252 through a cam pin shaft 255, the rear side surface of the displacement adjusting plate 263 is in contact with the cam pin shaft 255, a pair of displacement adjusting guide rods 262 is further fixedly mounted on the front end surface of the displacement adjusting plate 263, and the front ends of the displacement adjusting guide rods 262 penetrate through the cam end seat 253 and are fixedly connected with the bracket mounting seat 26.

After the opening degree is adjusted, the bracket mounting base 26 is manually pushed, so that the rear side surface of the displacement adjusting plate 263 is in contact with the cam pin 255, and with the structural arrangement, in the subsequent operation process, when the clamping jaw mechanism 152 is opened to the maximum, the block base mounting heads 812 at the upper end and the lower end of the supporting plate 81 can be just aligned with the first block base sockets 822, the cam mechanism 25 is continuously advanced, and then the block base mounting heads 812 can be completely inserted into the first block base sockets 822.

Referring to fig. 5, after the insertion, in order to facilitate the block seat plug 1524 to be easily pulled out from the second block seat socket 821, a small groove 2521 is further formed on the outer side wall of the cam horizontal arm 252, after the insertion, the roller 1525 is just located in the small groove 2521, so that the distance between the two block seat plug 1524 is slightly reduced, the main supporting force is generated by switching between 812 and 822 from the original 1524 to 822, and thus the contact pressure between the block seat plug 1524 and the second block seat socket 821 is greatly reduced, and the block seat plug 1524 can be easily pulled out from the second block seat socket 821.

Preferably, referring to fig. 10, an opening degree metering mechanism 28 is further fixedly mounted on the top guide rod 23, the opening degree metering mechanism 28 includes a metering disc 281 and a metering frame 282 fixedly sleeved on the top guide rod 23, a speed reducer 283 is fixedly mounted on the metering frame 282, one end of the speed reducer 283 is connected with a central shaft of the metering disc 281, the other end of the speed reducer 283 is connected with a transition shaft, an end portion of the transition shaft is connected with a rear end of the central screw 274 through a coupling 284, and a metering numerical value 2811 is distributed on a circumferential outer wall of the metering disc 281.

Working principle of the opening degree metering mechanism 28: when the rotating disc 271 drives the central screw 274 to rotate, the transition shaft rotates under the driving of the coupling 284, and then drives the measuring disc 281 to rotate through the speed reducer, and the measuring numerical value 2811 right above the measuring disc 281 is the numerical value of the opening degree H at this time, so that a worker can clearly and intuitively know the opening degree size at this time, and the operator can conveniently adjust the required opening degree size.

Preferably, a plurality of damping clamping grooves 2812 are further distributed on the circumferential outer wall of the metering disc 281, the damping clamping grooves 2812 are located between adjacent metering numerical values 2811, a damping seat 285 is fixed on the top guide rod 23, a roller accommodating cavity 286 is formed in the damping seat 285, strip-shaped oblique shaft grooves 288 are formed in the front side wall and the rear side wall of the roller accommodating cavity 286, a damping roller 287 is arranged in the roller accommodating cavity 286, two central shaft ends of the damping roller 287 are movably arranged in the corresponding strip-shaped oblique shaft grooves 288 respectively, and the circumferential outer wall of the damping roller 287 is in contact with the circumferential outer wall of the metering disc 281.

By the structural arrangement, in the opening degree adjusting process, the metering disc 281 has certain gear resistance, and the adjusting process can send out clicking sound to facilitate the adjustment of the opening degree of a worker.

Obviously, as another solution, the opening degree adjusting mechanism 27 includes a central lead screw 274 rotatably mounted on the adjusting rack and a lead screw driving motor, the front end of the central lead screw 274 is rotatably fitted in the cam end seat 253, the front section of the central lead screw 274 is in threaded fit with a pushing block 275, the front end of the pushing block 275 is provided with a pair of pushing inclined walls which are symmetrically arranged up and down, the end of the cam horizontal arm 252 is provided with a cam inclined wall attached to the pushing inclined wall, the cam inclined wall is in sliding fit on the pushing inclined wall, and the lead screw driving motor is in driving connection with the end of the central lead screw 274. The size adjustment of the flare opening degree can also be conveniently realized by directly driving the central screw 274 to rotate through the screw driving motor.

Preferably, the bottom of the supporting cross frame 11 further extends to form a bottom handle 14, the bottom handle 14 is sleeved with a bottom handle shell 700, the rear end of the supporting cross frame 11 further extends upwards to form a middle handle 12, the middle handle 12 is located in the driving frame 21, the middle handle 12 is sleeved with a middle handle shell 400, and the rear side of the driving frame 21 is further sleeved with a frame handle shell 300.

Preferably, the top guide rod 23 is further sleeved with a middle cover 500 of the opening degree adjusting mechanism 27, and the jaw mounting frame 151 is further sleeved with a jaw cover 600.

In actual use, one hand holds the bottom handle 14, the other hand abuts against the frame handle housing 300, fingers are buckled on the middle handle housing 400, and the middle handle housing 400 and the frame handle housing 300 are tightly held by force, so that the driving frame 21 can move relative to the supporting cross frame 11, the clamping jaw mechanisms 152 are opened, the two seam block seats 82 are driven to be opened, and meanwhile, the supporting plate 81 moves forwards to be close to the two seam block seats 82 until the supporting plate 81 is completely inserted into the two seam block seats 82.

Obviously, as another scheme, a traverse driving lead screw may be rotatably mounted on the supporting cross frame 11, the traverse driving lead screw is threaded through the driving frame 21, and an end of the traverse driving lead screw is drivingly connected to an output shaft end of a traverse driving motor fixed on the supporting cross frame 11. The transverse driving motor drives the transverse driving screw rod to rotate, and the transverse driving screw rod drives the driving frame 21 to move transversely left and right relative to the supporting cross frame 11.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.