Mathematical coordinate drawing device

Abstract

The utility model belongs to the technical field of mathematics teaching, and particularly relates to a mathematics coordinate drawing device which comprises a cross, and a drawing device is arranged in the cross. According to the mathematical coordinate drawing device, the installation unit is arranged, a protruding block is pushed to drive a pressing plate to compress a spring, the distance between the pressing plate and a sliding block is increased, then a chalk is placed between the sliding block and the pressing plate, the protruding block is loosened, the chalk is pushed to penetrate through the four limiting frames under the action of the spring to abut against a blackboard, and therefore chalk installation is completed; the drawing device is simple in structure and convenient to install, the drawing efficiency is improved, the problems that chalk installation is tedious and the drawing efficiency is affected in the background technology are solved, the chalk is extruded and fixed through the four limiting frames by arranging the auxiliary unit, shaking of the chalk during drawing is avoided, the drawing quality is improved, and meanwhile the friction force between the limiting frames and the chalk is reduced in cooperation with the rollers; and when the pressing plate extrudes the chalk, the chalk can more easily extend into the blackboard to be in contact with the surface of the blackboard, so that drawing is smoother.

Description

TECHNICAL FIELD

[0001] The utility model relates to mathematical teaching technical field, concretely is a mathematical coordinate drawing device. BACKGROUND

[0002] The knowledge related to the plane rectangular coordinate system is the indispensable knowledge in the mathematical subject teaching of our country, and the drawing of the knowledge is needed in the teaching to facilitate the intuitive teaching.

[0003] In the prior art, four sets of fixing devices are needed to draw the coordinate system, and a hydraulic cylinder is needed to fix the chalk, so that the operation is more complicated and is not conducive to the rapid drawing of the rectangular coordinate system.

[0004] The mathematical coordinate drawing device disclosed by the announcement number CN220180449U can draw the plane rectangular coordinate system conveniently and quickly by rotating the steering seat to align the four parts of the containing groove and the cross groove, and then reciprocally sliding the slider in the cross groove and the containing groove, and the cooperation of the pencil barrel, the contact plate, the compression spring and the rubber spring piece can limit the chalk and abut the chalk against the blackboard surface, so that the chalk handwriting is clear and the drawing quality is guaranteed.

[0005] However, the device needs to be disassembled when installing the chalk, the chalk is inserted into the pencil barrel, and then the pencil barrel is assembled, the pencil barrel is gradually rotated to abut the chalk against the blackboard surface and the contact plate surface, the chalk installation is complicated, and the drawing efficiency is affected.

[0006] Therefore, it is urgent to provide a mathematical coordinate drawing device. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a mathematical coordinate drawing device to solve the problem of complicated chalk installation and affected drawing efficiency in the background art.

[0008] To achieve the above object, the utility model provides the following technical scheme: a mathematical coordinate drawing device, comprising a cross, the cross is internally provided with a drawing device, the drawing device comprises an installation unit and an auxiliary unit.

[0009] The installation unit is arranged at the left side and the upper end in the cross, and the auxiliary unit is arranged on the back of the installation unit.

[0010] The mounting unit comprises a sliding block, a fixing rod, a connecting plate, a pressing plate, a spring, a protruding block and a handle, the sliding block is slidingly connected to the left side and the upper end inside the cross, the fixing rod is fixedly installed on the front left and right sides of the sliding block, the connecting plate is fixedly installed on the front of the left and right two fixing rods, the pressing plate is slidingly connected to the left and right ends outside the left and right two fixing rods, the spring is installed outside the two fixing rods and between the connecting plate and the pressing plate, the protruding block is fixedly installed on the upper and lower ends of the pressing plate, and the handle is fixedly installed on the front of the connecting plate.

[0011] Preferably, the auxiliary unit comprises a sleeve, a suction cup, a limiting frame and a roller, the sleeve is fixedly installed around the outside of the cross, the suction cup is fixedly installed inside the sleeve, the limiting frame is fixedly installed around the back of the sliding block, and the roller is rotationally connected inside the limiting frame.

[0012] Preferably, horizontal and vertical sliding grooves are formed inside the cross, the width of the sliding grooves is equal to the width of the sliding block, the sliding block is slidingly connected inside the sliding grooves, the sliding block is driven to slide along the sliding grooves by pushing the handle, and thus the drawing of the coordinate system is facilitated.

[0013] Preferably, a placing groove is formed inside the sliding block, and the diameter of the placing groove is equal to the diameter of the chalk, the spring is compressed by pushing the protruding block to drive the pressing plate, then the chalk is placed in the placing groove, the protruding block is loosened, and the chalk is pushed to abut against the blackboard under the action of the spring, and thus the chalk is installed conveniently and efficiently.

[0014] Preferably, the number of the mounting unit and the auxiliary unit is two, and they are distributed on the left side of the horizontal sliding groove and the upper end of the vertical sliding groove of the cross, the chalk is driven to move along the horizontal sliding groove by pushing the left side sliding block, and thus the drawing of the X-axis is completed, the chalk is driven to move along the vertical sliding groove by pushing the upper end sliding block, and thus the drawing of the Y-axis is completed.

[0015] Preferably, the horizontal and vertical sliding grooves of the cross are connected at a cavity, and the length of the sliding block is greater than the length of the cavity, so that the sliding block is prevented from shaking when sliding to the cavity and affecting the drawing quality.

[0016] Preferably, the limiting frame is made of plastic, the chalk is fixed by being extruded by the four limiting frames, the chalk is prevented from shaking during drawing and the drawing quality is improved, and the friction between the limiting frame and the chalk is reduced by cooperating with the roller, so that the chalk can more easily extend to contact the surface of the blackboard when the chalk is extruded by the pressing plate.

[0017] Compared with the prior art, the present utility model has the advantages that:

[0018] 1. The mathematical coordinate drawing device, by setting the installation unit, by pushing the convex block to drive the compression spring, the distance between the pressing plate and the slider is increased, then the chalk is put between the slider and the pressing plate, then the convex block is released, under the action of the spring, the chalk is pushed through the four limiting frames and abuts against the blackboard, so as to complete the installation of the chalk, convenient installation, improve the drawing efficiency, solve the problem of complicated chalk installation in the background technology, affect the drawing efficiency.

[0019] 2. The mathematical coordinate drawing device, by setting the auxiliary unit, the chalk is fixed by the four limiting frames, the chalk is prevented from shaking during drawing, the drawing quality is improved, and the friction between the limiting frame and the chalk is reduced by cooperating with the roller, so that the chalk can be more easily inserted into contact with the surface of the blackboard when the pressing plate extrudes the chalk, and the drawing is smoother. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the utility model;

[0021] Figure 2 It is the installation unit structure schematic diagram of the utility model;

[0022] Figure 3 It is the structure schematic diagram of the slider and the limiting frame connection of the utility model;

[0023] Figure 4 It is the structure schematic diagram of the limiting frame and the roller connection of the utility model.

[0024] In the drawing: 1, cross; 201, slider; 202, fixed rod; 203, connecting plate; 204, pressing plate; 205, spring; 206, convex block; 207, handle; 301, sleeve; 302, suction cup; 303, limiting frame; 304, roller. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0027] Embodiment one: a mathematical coordinate drawing device, including cross 1, cross 1 inside setting has drawing device, drawing device includes installation unit and auxiliary unit.

[0028] The mounting unit is arranged at the left side and the upper end inside the cross 1, the auxiliary unit is arranged at the back of the mounting unit, the number of the mounting unit and the auxiliary unit is two, and they are distributed at the left side of the horizontal sliding groove and the upper end of the vertical sliding groove of the cross 1, the chalk is moved along the horizontal sliding groove by pushing the left side sliding block 201, so that the drawing of the X axis is completed, the chalk is moved along the vertical sliding groove by pushing the upper end sliding block 201, so that the drawing of the Y axis is completed.

[0029] The mounting unit comprises a sliding block 201, a fixed rod 202, a connecting plate 203, a pressing plate 204, a spring 205, a protruding block 206 and a handle 207, the sliding block 201 is slidingly connected to the left side and the upper end inside the cross 1, the cross 1 is provided with horizontal and vertical sliding grooves inside, and the width of the sliding groove is equal to the width of the sliding block 201, the sliding block 201 is slidingly connected inside the sliding groove, the sliding block 201 is slidingly driven along the sliding groove by pushing the handle 207, so that the drawing of the coordinate system is facilitated, the horizontal and vertical sliding grooves of the cross 1 are cavities at the junction, the length of the sliding block 201 is greater than the length of the cavity, so that the sliding block 201 is prevented from shaking when sliding to the cavity, and the drawing quality is affected, the fixed rod 202 is fixedly installed on the front and the left and right sides of the sliding block 201, the connecting plate 203 is fixedly installed on the front of the left and right fixed rods 202, the pressing plate 204 is slidingly connected to the outer sides of the left and right fixed rods 202, the sliding block 201 is provided with a placing groove inside, and the diameter of the placing groove is equal to the diameter of the chalk, the spring 205 is compressed by pushing the protruding block 206 to drive the pressing plate 204, then the chalk is placed in the placing groove, and then the protruding block 206 is released, the chalk is pushed to abut against the blackboard under the action of the spring 205, so that the chalk is conveniently installed, and the efficiency is high, the spring 205 is installed outside the two fixed rods 202 and between the connecting plate 203 and the pressing plate 204, the protruding block 206 is fixedly installed on the upper and lower ends of the pressing plate 204, the protruding block 206 is more easily pushed to drive the pressing plate 204 to move along the fixed rod 202, and the handle 207 is fixedly installed on the front of the connecting plate 203.

[0030] In the embodiment one, the auxiliary unit comprises a sleeve 301, a suction cup 302, a limiting frame 303 and a roller 304, the sleeve 301 is fixedly installed outside the cross 1, the suction cup 302 is fixedly installed inside the sleeve 301, the cross 1 is installed on the blackboard by the suction cup 302, the limiting frame 303 is fixedly installed around the back of the sliding block 201, and the roller 304 is rotatably connected inside the limiting frame 303, so that the friction between the limiting frame 303 and the chalk is reduced by the roller 304, the chalk can more easily extend to contact the surface of the blackboard when the pressing plate 204 extrudes the chalk.

[0031] Embodiment three: on the basis of embodiment two: the limiting frame 303 is made of plastic material, through four limiting frame 303 to the chalk extrusion fixed, avoid chalk in drawing occurs when the shake, improve the drawing quality, at the same time with the roller 304 reduce the friction between the limiting frame 303 and chalk, make the pressing plate 204 to the chalk extrusion, the chalk can more easily into the blackboard surface contact.

[0032] In use, the cross 1 is installed on the blackboard through the suction cup 302, then through the convex block 206 drive pressing plate 204 compression spring 205, make the distance between the pressing plate 204 and the slider 201 increase, then put the chalk between the slider 201 and the pressing plate 204, release the convex block 206, under the action of spring 205 push the chalk through four limiting frame 303 between and blackboard abutment, so as to complete the installation of the chalk, then push the handle 207 make the left slider 201 drive the chalk along the horizontal sliding slot moves, realize the X axis of the drawing, again push the handle 207 make the upper end slider 201 drive the chalk along the vertical sliding slot moves, realize the Y axis of the drawing, the junction of X axis and Y axis is the coordinate origin, so as to complete the drawing of the coordinate system.

[0033] It should be noted that in this paper, such as the first and second relationship terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent in such process, method, article or equipment. Without more limitation, the element defined by the sentence "including a......" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

Claims

1. A mathematical coordinate plotting device comprising a cross (1), characterised in that: The cross (1) is equipped with a drawing device, which includes an installation unit and an auxiliary unit; The mounting unit is located inside the cross (1) on the left and upper sides, and the auxiliary unit is located on the back of the mounting unit; The mounting unit includes a slider (201), a fixing rod (202), a connecting plate (203), a pressure plate (204), a spring (205), a protrusion (206), and a handle (207). The slider (201) is slidably connected to the left and upper sides of the inside of the cross (1). The fixing rod (202) is fixedly installed on the left and right sides of the front of the slider (201). The connecting plate (203) is fixedly installed on the front of the two fixing rods (202). The pressure plate (204) is slidably connected to the outside of the two fixing rods (202) at both ends. The spring (205) is installed on the outside of the two fixing rods (202) and located between the connecting plate (203) and the pressure plate (204). The protrusion (206) is fixedly installed on the upper and lower ends of the pressure plate (204). The handle (207) is fixedly installed on the front of the connecting plate (203).

2. A mathematical coordinate plotting device according to claim 1, wherein: The auxiliary unit includes a sleeve (301), a suction cup (302), a limiting frame (303), and a roller (304). The sleeve (301) is fixedly installed around the outside of the cross (1). The suction cup (302) is fixedly installed inside the sleeve (301). The limiting frame (303) is fixedly installed around the back of the slider (201). The roller (304) is rotatably connected inside the limiting frame (303).

3. A mathematical coordinate plotting device according to claim 1, wherein: The cross (1) has horizontal and vertical grooves inside, and the width of the grooves is equal to the width of the slider (201). The slider (201) is slidably connected inside the grooves.

4. A mathematical coordinate plotting device according to claim 1, wherein: The slider (201) has a placement groove inside, and the diameter of the placement groove is equal to the diameter of the chalk.

5. A mathematical coordinate plotting device according to claim 1, wherein: The number of installation units and auxiliary units is two, and they are distributed on the left side of the transverse slide groove and the upper end of the longitudinal slide groove of the cross (1).

6. A mathematical coordinate plotting device according to claim 1, wherein: The intersection of the transverse and longitudinal grooves of the cross (1) is a cavity, and the length of the slider (201) is greater than the length of the cavity.

7. A mathematical coordinate plotting device according to claim 2, wherein: The limiting frame (303) is made of plastic.

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