阅读说明：本技术 一种大学数学用曲线绘图板 (Curve drawing board for college mathematics ) 是由 岳晓鹏 王楠 于 2020-05-18 设计创作，主要内容包括：本发明涉及绘图工具技术领域,公开了一种大学数学用曲线绘图板,包括：箱体,箱体的外侧面上设有半透光板,箱体内设有微型投影装置,微型投影装置的投射镜头正对半透光板设置,箱体上设有信号连接头和控制开关组件,微型投影装置通过控制开关组件和电源线外接电源,智能移动终端通过信号连接头与微型投影装置信号连接,箱体上还设有能够对智能移动终端限位的限位装置,这种大学数学用曲线绘图板,能够快速规范地画出曲线,使用方便快捷。(The invention relates to the technical field of drawing tools, and discloses a curve drawing board for university mathematics, which comprises: the box, be equipped with half light-passing board on the lateral surface of box, be equipped with miniature projection arrangement in the box, miniature projection arrangement's projecting lens is just half light-passing board setting, be equipped with signal connector and control switch subassembly on the box, miniature projection arrangement passes through control switch subassembly and power cord external connection power, intelligent Mobile terminal passes through signal connector and miniature projection arrangement signal connection, still be equipped with on the box and can be to the spacing stop device of intelligent Mobile terminal, this kind of curve drawing board for college mathematics, can draw the curve fast standardly, high durability and convenient use.)

1. A curve drawing board for university mathematics, comprising: the portable intelligent projection device comprises a box body (1), wherein semi-transparent plates (2) are arranged on the outer side face of the box body (1), a miniature projection device is arranged in the box body (1), a projection lens of the miniature projection device is arranged on the semi-transparent plates (2), a signal connector (4) and a control switch assembly (14) are arranged on the box body (1), the miniature projection device is connected with a power module through the control switch assembly (14), the power module is connected with a power line (15), and an intelligent mobile terminal (6) is in signal connection with the miniature projection device through the signal connector (4).

2. The curve drawing board for college mathematics as claimed in claim 1, wherein the signal connector (4) is arranged on the top of the case (1), the case (1) is further provided with a limiting device capable of limiting the intelligent mobile terminal (6), and the limiting device comprises: two relative draw-in grooves (3), two relative draw-in grooves (3) correspond the left and right sides that sets up at box (1) top and be located signal connector (4), the top of box (1) still is equipped with two sections first spout (5), two sections first spout (5) correspond the left and right sides that sets up at signal connector (4), the bottom of two draw-in grooves (3) all is equipped with first slider, two draw-in grooves (3) correspond the horizontal slip in two sections first spout (5) through first slider, position adjustment about carrying out.

3. The curve drawing board for college mathematics as claimed in claim 1, wherein the upper side of the front side of the box body (1) is provided with a second chute (7), the lower side of the front side of the box body (1) is provided with a third chute (8), a vertical graduated scale (9) is arranged between the second chute (7) and the third chute (8), the bottoms of the upper and lower ends of the vertical graduated scale (9) are respectively provided with a second slider, the vertical graduated scale (9) slides in the second chute (7) and the third chute (8) through the second slider to realize the left-right movement of the vertical graduated scale (9), the outer side surface of the vertical graduated scale (12) is provided with a fourth chute (12), the bottom of the left end of the horizontal graduated scale (10) is provided with a third slider (17), the horizontal graduated scale (10) slides in the fourth sliding groove (12) through the third sliding block (17) to realize that the horizontal graduated scale (10) slides up and down along the vertical graduated scale (9).

4. The curve drawing board for college mathematics as claimed in claim 3, wherein the horizontal graduated scale (10) is provided with a first through hole at the left end, the upper end of the third slider (17) passes through the first through hole to be detachably connected with the limit cap (13), the upper part of the connecting rod is provided with a convex edge (18), the convex edge (18) is positioned below the first through hole, the top surface of the horizontal graduated scale (10) is provided with a fifth sliding groove (16) along the length direction, a marking pen (11) is detachably arranged in the fifth sliding groove (16), and the marking pen (11) can move left and right along the fifth sliding groove (16).

5. Curve drawing board for college mathematics as in claim 4, characterized in that said marker pen (11) comprises: the pen container comprises an upper pen container (11-1), a lower pen container (11-2) and a cover (11-3), wherein the upper pen container (11-1) and the lower pen container (11-2) are integrally connected, the cover (11-3) is detachably connected with the upper end of the upper pen container (11-1), the outer diameter of the upper pen container (11-1) is larger than that of the lower pen container (11-2), the outer diameter of the upper pen container (11-1) is larger than the width of a fifth sliding groove (16), the upper pen container (11-1) is positioned above the fifth sliding groove (14), the lower pen container (11-2) penetrates through the fifth sliding groove (14), a pen core or chalk is arranged at the lower part in the lower pen container (11-2), and limiting devices for limiting the lower pen container (11-2) are further arranged in the upper pen container (11-1) and the lower pen container (11-2).

6. The curve drawing board for university mathematics as defined in claim 5, wherein the limiting device comprises a first clip piece (11-4) and a second clip piece (11-5), the middle part of the first clip piece (11-4) and the middle part of the second clip piece (11-5) are hinged through a pin, a spring (11-10) is connected between the upper part of the first clip piece (11-4) and the upper part of the second clip piece (11-5), the lower ends of the first clip piece (11-4) and the second clip piece (11-5) are both provided with a stopper (11-7) capable of limiting the lower pen container (11-2), the lower pen container (11-2) is provided with a second through hole (11-6) for the stopper (11-7) to go in and out, the outer side surfaces of the upper ends of the first clip piece (11-4) and the second clip piece (11-5) are both provided with a pressing block (11-9), the upper pen barrel (11-1) is provided with a notch (11-8) which enables the pressing block (11-9) to go in and out and is matched with the pressing block (11-9).

Technical Field

The invention relates to the technical field of drawing tools, in particular to a curve drawing board for university mathematics.

Background

The complex mathematical principle is explained to often using some curves in college mathematics, the teacher need draw the curve on blackboard or blank, current curve is drawn and is used curve drawing board, current curve drawing board is connected by the fixed pitch arc of multistage and forms fixed curve figure, similar with the set square, it is inconvenient to use, the teacher often draws the curve according to the experience, consequently, often appear because the curve is not normal to lead to the point on the curve not to accord with the coordinate that corresponds, influence the visual understanding directly perceived of vision, how can draw the curve fast standardly is college mathematics teacher's potential demand.

Disclosure of Invention

The invention provides a curve drawing board for university mathematics, which can draw curves quickly and standardly and is convenient to use.

The invention provides a curve drawing board for university mathematics, which comprises: the box is equipped with half light-passing board on the lateral surface of box, be equipped with miniature projection arrangement in the box, miniature projection arrangement's projection lens is just half light-passing board setting, is equipped with signal connector and control switch subassembly on the box, and miniature projection arrangement passes through control switch subassembly and power module and connects, and power module connects the power cord, and intelligent Mobile terminal passes through signal connector and miniature projection arrangement signal connection.

The signal connector sets up at the top of box, still is equipped with on the box and can be to the spacing stop device of intelligent Mobile terminal, stop device includes: the two opposite clamping grooves are correspondingly arranged on the left side and the right side of the box body, which are positioned at the top of the signal connector, the top of the box body is also provided with two sections of first sliding grooves, the two sections of first sliding grooves are correspondingly arranged on the left side and the right side of the signal connector, the bottoms of the two clamping grooves are respectively provided with a first sliding block, and the two clamping grooves slide left and right in the two sections of first sliding grooves through the first sliding blocks correspondingly to adjust the left and right positions.

The upside of box leading flank is equipped with the second spout, the downside of box leading flank is equipped with the third spout, be equipped with vertical scale between second spout and the third spout, the bottom at the upper and lower both ends of vertical scale all is equipped with the second slider, vertical scale passes through the second slider and slides in second spout and third spout and realizes that vertical scale moves about, be equipped with the fourth spout on the outside face of vertical scale, the left end bottom of horizontal scale is equipped with the third slider, horizontal scale slides through the third slider and realizes that horizontal scale slides from top to bottom along vertical scale in the fourth spout. The left end of horizontal scale is equipped with first through-hole, and the upper end of third slider passes first through-hole and can dismantle with spacing cap and be connected, and the upper portion of connecting rod is equipped with protruding edge, and protruding edge is located the below of first through-hole, horizontal scale top surface is equipped with the fifth spout along length direction, can dismantle in the fifth spout and be equipped with the marking pen, and the marking pen can remove about the fifth spout.

The scribing pen comprises: the pen container comprises an upper pen container body, a lower pen container body and a cover, wherein the upper pen container body and the lower pen container body are connected in an integrated mode, the cover is detachably connected with the upper end of the upper pen container body, the outer diameter of the upper pen container body is larger than that of the lower pen container body, the outer diameter of the upper pen container body is larger than the width of a fifth sliding groove, the upper pen container body is located above the fifth sliding groove, the lower pen container body penetrates through the fifth sliding groove, a pen core or a chalk is arranged on the lower portion in the lower pen container body, and limiting devices for limiting the lower.

Stop device includes first clamping piece and second clamping piece, and is articulated through the round pin axle between the middle part of first clamping piece and the middle part of second clamping piece, is connected with the spring between the upper portion of first clamping piece and the upper portion of second clamping piece, and the lower extreme of first clamping piece and second clamping piece all is equipped with and carries out spacing dog to lower pen container, is equipped with the second through-hole that makes the dog business turn over on lower pen container, and the lateral surface of the upper end of first clamping piece and second clamping piece all is equipped with presses the briquetting, goes up and is equipped with the messenger and presses briquetting business turn over and with the notch that presses briquetting to match on the pen container.

Compared with the prior art, the invention has the beneficial effects that:

the intelligent mobile terminal selects the curve to be drawn, the intelligent mobile terminal turns the mirror image of the curve to be drawn, the micro projection device projects the mirror image turned curve onto the semi-transparent plate, the normal curve image can be seen through the semi-transparent plate, a teacher can obtain a standard curve graph only by drawing along the curve image with a pen, the curve can be drawn quickly and standardly, and the intelligent mobile terminal is convenient and quick to use.

Drawings

Fig. 1 is a schematic structural diagram of a curve drawing board for university mathematics provided by the invention.

Fig. 2 is a schematic structural view of the connection between the horizontal scale and the vertical scale provided by the invention.

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention.

Description of reference numerals:

1-box body, 2-semi-transparent plate, 3-card slot, 4-signal connector, 5-first sliding slot, 6-intelligent mobile terminal, 7-second sliding slot, 8-third sliding slot, 9-vertical graduated scale, 10-horizontal graduated scale, 11-marking pen, 11-1-upper pen container, 11-2-lower pen container, 11-3-cover, 11-4-first clamping piece, 11-5-second clamping piece, 11-6-second through hole, 11-7-stop block, 11-8-notch, 11-9-pressing block, 11-10-spring, 12-fourth sliding slot, 13-limit cap, 14-control switch component, 15-power line, 16-fifth sliding slot, 17-third slider, 18-ledge.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to fig. 1-3, but it should be understood that the scope of the present invention is not limited to the embodiment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, an embodiment of the present invention provides a curve drawing board for university mathematics, including: the box 1, be equipped with half light-passing board 2 on the lateral surface of box 1, be equipped with miniature projection arrangement in the box 1, miniature projection arrangement's projection lens is just setting up half light-passing board 2, be equipped with signal connector 4 and control switch subassembly 14 on the box 1, miniature projection arrangement passes through control switch subassembly 14 and power module and connects, power module connects power cord 15, 6 passing signal connector 4 of intelligent Mobile terminal and miniature projection arrangement signal connection.

The working principle and the using method are as follows: through power cord 15 external power supply, switch on for miniature projection arrangement through power module and control switch subassembly 14, insert intelligent Mobile terminal 6 signal connector 4, make intelligent Mobile terminal 6 and miniature projection arrangement carry out signal connection, intelligent Mobile terminal 6 can be smart mobile phone or panel computer, select the curve that needs to draw through intelligent Mobile terminal 6, then carry out the mirror image upset through the curve that intelligent Mobile terminal 6 will need to draw, curve after miniature projection arrangement overturns the mirror image is projected on semi-transparent board 2, can see normal curve figure image through semi-transparent board 2, the teacher only needs to be traced and drawn along curved image with the pen and can obtain standard curve figure, moreover, the steam generator is simple in structure, high durability and convenient use.

In order to adapt to the connection of different intelligent mobile terminals 6, avoid placing of intelligent mobile terminal 6 simultaneously, signal connector 4 sets up at the top of box 1, still is equipped with on the box 1 and can be to the 6 spacing stop device of intelligent mobile terminal, stop device includes: two relative draw-in grooves 3, two relative draw-in grooves 3 correspond the setting and are located the left and right sides of signal connector 4 at box 1 top, and the top of box 1 still is equipped with two sections first spouts 5, and two sections first spouts 5 correspond the setting and are in the left and right sides of signal connector 4, and the bottom of two draw-in grooves 3 all is equipped with first slider, and two draw-in grooves 3 correspond the horizontal slip in two sections first spouts 5 through first slider, control position adjustment.

The width between the two clamping grooves 3 can be adjusted according to the width of the intelligent mobile terminal 6 through the first sliding block and the first sliding groove 5, the intelligent mobile terminal is suitable for placing intelligent mobile phones or tablet computers of different models, and the signal connector 4 can also be provided with different interface types according to different intelligent mobile phones or tablet computers.

For convenience of a teacher to draw a curved coordinate axis x-axis and a curved coordinate axis y-axis, the upside of the front side surface of the box body 1 is provided with a second sliding groove 7, the downside of the front side surface of the box body 1 is provided with a third sliding groove 8, a vertical graduated scale 9 is arranged between the second sliding groove 7 and the third sliding groove 8, the bottoms of the upper end and the lower end of the vertical graduated scale 9 are respectively provided with a second sliding block, the vertical graduated scale 9 slides in the second sliding groove 7 and the third sliding groove 8 through the second sliding block to achieve left and right movement of the vertical graduated scale 9, the outer side surface of the vertical graduated scale 12 is provided with a fourth sliding groove 12, the bottom of the left end of the horizontal graduated scale 10 is provided with a third sliding block 17, and the horizontal graduated scale 10 slides in the fourth sliding groove 12 through the third.

Vertical scale 9 passes through the second slider, the leading flank horizontal slip of box 1 is realized along to second spout 7 and third spout 8, and horizontal scale 10 slides from top to bottom through third slider 17 and fourth spout 12 along vertical scale 12, realizes that horizontal scale 10 slides from top to bottom along the leading flank of box 1, is convenient for draw curved coordinate axis x axle and y axle, is convenient for carry out coordinate analysis, convenient to use to the point on the curve.

In order to create and draw curves by teachers, as shown in fig. 2, a first through hole is formed in the left end of the horizontal dividing ruler 10, the upper end of the third sliding block 17 penetrates through the first through hole to be detachably connected with the limiting cap 13, a convex edge 18 is arranged on the upper portion of the connecting rod and located below the first through hole, a fifth sliding groove 16 is formed in the upper top surface of the horizontal dividing ruler 10 along the length direction, a marking pen 11 is detachably arranged in the fifth sliding groove 16, and the marking pen 11 can move left and right along the fifth sliding groove 16.

The working principle is as follows: pass first through-hole through the connecting rod, it is spacing to carry out the position of connecting rod through protruding edge 18 and spacing cap 13, make horizontal scale 10 can rotate along the connecting rod, remove the distance change that realizes between 11 to the connecting rod of marking off pen along fifth spout 14 through marking off pen 11 can be followed and remove, thereby change round connecting rod pivoted radial size, the change that realizes the connecting rod position through vertical scale 9 and horizontal scale 10 is the position change of the centre of a circle, the teacher can carry out the drawing of creation curve through changing the centre of a circle and changing the radius.

In order to facilitate the movement of the scribing pen while ensuring that the scribing pen 11 is stationary during scribing, as shown in fig. 3, the scribing pen 11 includes: the pen container comprises an upper pen container 11-1, a lower pen container 11-2 and a cover 11-3, wherein the upper pen container 11-1 and the lower pen container 11-2 are integrally connected, the cover 11-3 is detachably connected with the upper end of the upper pen container 11-1, the outer diameter of the upper pen container 11-1 is larger than that of the lower pen container 11-2, the outer diameter of the upper pen container 11-1 is larger than the width of a fifth chute 16, the upper pen container 11-1 is positioned above the fifth chute 14, the lower pen container 11-2 penetrates through the fifth chute 14, a pen core or chalk is arranged at the lower part in the lower pen container 11-2, and limiting devices for limiting the lower pen container 11-2 are further arranged in the upper pen container 11-1 and the lower pen container 11-2.

In order to avoid that the lower pen container 11-2 drives the pen core or chalk to move upwards in the drawing process and influence curve drawing, the limiting device comprises a first clamping piece 11-4 and a second clamping piece 11-5, the middle part of the first clamping piece 11-4 is hinged with the middle part of the second clamping piece 11-5 through a pin shaft, a spring 11-10 is connected between the upper part of the first clamping piece 11-4 and the upper part of the second clamping piece 11-5, a stop block 11-7 capable of limiting the lower pen container 11-2 is arranged at the lower ends of the first clamping piece 11-4 and the second clamping piece 11-5, a second through hole 11-6 enabling the stop block 11-7 to go in and out is arranged on the lower pen container 11-2, a pressing block 11-9 is arranged on the outer side surfaces of the upper ends of the first clamping piece 11-4 and the second clamping piece 11-5, and a pressing block 11-9 which enables the pressing block 11-9 to go in and go out and the matched notch 11-8.

The using method comprises the following steps: the pressing block 11-9 is pressed by a hand, the first clamping piece 11-4 and the second clamping piece 11-5 are clamped tightly, the stop dog 11-7 at the lower end of the first clamping piece 11-4 and the lower end of the second clamping piece 11-5 are retracted into the lower pen barrel 11-2 from the second through hole 11-6, the upper pen barrel 11-1 is driven by the hand to move left and right along the fifth sliding groove 14, the position of the marking pen 11 is adjusted, namely the radius with the connecting rod as the center of a circle is adjusted, after the position of the marking pen 11 is adjusted, the pressing block 11-9 is released, the first clamping piece 11-4 and the second clamping piece 11-5 are opened under the action of the elastic force of the spring 11-10, the stop dog 11-7 extends out of the lower pen barrel 11-2 from the second through hole 11-6, and the lower pen barrel 11.

The intelligent mobile terminal selects the curve to be drawn, the intelligent mobile terminal turns the mirror image of the curve to be drawn, the micro projection device projects the mirror image turned curve onto the semi-transparent plate, the normal curve image can be seen through the semi-transparent plate, a teacher can obtain a standard curve graph only by drawing along the curve image with a pen, the curve can be drawn quickly and standardly, and the intelligent mobile terminal is convenient and quick to use.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.