Drawing auxiliary device

Abstract

The utility model discloses a drawing auxiliary device which comprises a device body, a connecting block and a chalk clamp, one side of the device body is fixedly connected with the connecting block, the other side of the connecting block is fixedly connected with the chalk clamp, the other side of the chalk clamp is provided with a pull rod, the side, close to the chalk clamp, of the pull rod is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the chalk clamp. The connecting rod integrally penetrates through the chalk clamp, a clamping plate is fixedly connected to the inner side of the connecting rod, and a spring is fixedly connected to one side of the clamping plate. Through the arrangement of pulleys and chalk clamps, the device can meet the requirements of a teacher for daily drawing of straight lines and circles, through the arrangement of a base and a vernier leg rotating disc, when the device does not need to draw circles, the teacher can store a vernier leg and a movable rod on the inner side of a handheld block, and the situation that the vernier leg influences the straight line drawing process of the teacher is avoided; and when the vernier leg and the movable rod are in a storage state, the device is more convenient for a teacher to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine electromechanical transportation, in particular to a drawing auxiliary device. Background Art

[0002] A drawing aid for teaching is an auxiliary tool for teaching or demonstration purposes, usually used in educational places such as schools, training institutions, etc. Commonly used auxiliary tools include tools for drawing straight lines and drawing circles. Due to the purpose and environment of teaching, drawing aids usually have to meet the requirements of portability and small size. This means that the existing devices can usually only draw a single circle or straight line when actually used, which cannot meet the daily teaching needs of teachers.

[0003] The implementation of the utility model aims to provide a drawing auxiliary device to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art mentioned in the background technology and provides a drawing auxiliary device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A drawing auxiliary device comprises a device body, a connecting block and a chalk clamp, wherein the connecting block is fixedly connected to one side of the device body, and the chalk clamp is fixedly connected to the other side of the connecting block, a pull rod is provided on the other side of the chalk clamp, a connecting rod is fixedly connected to the side of the pull rod close to the chalk clamp, the connecting rod passes through the chalk clamp as a whole, and a splint is fixedly connected to the inner side of the connecting rod, a spring is fixedly connected to one side of the splint, and a pulley is provided at the bottom of the device body.

[0007] Preferably, the pulley as a whole is composed of a movable wheel, a shell and a rotating shaft. The shell is fixedly connected to the bottom of the device body, and the rotating shaft is movably connected to both sides of the shell, and the movable wheel is embedded in the inner side of the rotating shaft.

[0008] Preferably, a turntable is movably connected to the upper surface of the device body, and the upper end of the turntable is fixedly connected to a base, a movable rod is movably connected to the inner side of the base, and one end of the movable rod is movably connected to the cursor leg turntable, the other side of the cursor leg turntable is fixedly connected to a cursor leg, and the other end of the cursor leg is fixedly connected to a chalk plug.

[0009] Preferably, a hand-held block is fixedly connected to the upper surface of the device body, and the hand-held block is divided into two parts as a whole. The two hand-held blocks are symmetrically arranged on both sides of the upper surface of the device body with the turntable as the center, and two strip grooves are provided on the inner side of the hand-held block on one side, and a rubber pad is fixedly connected to the outer surface of the hand-held block.

[0010] Preferably, a second rotating shaft is provided on the inner side of the base, and the movable rod is movably connected to the base via the second rotating shaft.

[0011] Preferably, the clamping plate is arc-shaped as a whole, and a rubber pad is provided on the inner side of the clamping plate.

[0012] Preferably, the movable rod is L-shaped as a whole, and a rectangular groove is provided at one end of the movable rod close to the cursor leg, and the cursor leg turntable is located on the inner side of the rectangular groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by setting a pulley and a chalk clamp, when the device is actually used, the chalk can be fixed on the inner side of the chalk clamp, and then the device is slid through the pulley, so that the device can meet the needs of drawing straight lines. At the same time, when a circle needs to be drawn, the teacher can fix the chalk on the inner side of the chalk rod, and then draw the circle by rotating the cursor leg, so that the device can meet the daily drawing requirements of the teacher.

[0015] 2. By setting the base and the cursor leg turntable, when the device does not need to draw a circle, the teacher can store the cursor legs and the movable rod on the inner side of the handheld block to prevent the cursor legs from affecting the teacher's straight line drawing process. When the cursor legs and the movable rod are in the stored state, the device is more convenient for teachers to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a drawing auxiliary device proposed by the utility model;

[0017] Figure 2 Expand the structure diagram for the movable rod and the cursor leg;

[0018] Figure 3 It is a schematic diagram of the bottom structure of the device body;

[0019] Figure 4 for Figure 1 A is an enlarged structural diagram;

[0020] Figure 5 Schematic diagram of the structure of the plywood and chalk fixture.

[0021] In the figure: 1. device body; 2. connecting block; 3. chalk clamp; 4. pull rod; 5. splint; 6. turntable; 7. base; 8. movable rod; 9. cursor leg; 10. chalk plug rod; 11. hand-held block; 12. cursor leg turntable; 13. pulley; 14. connecting rod; 15. spring. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example

[0027] Reference Figure 1-5, a drawing auxiliary device, including a device body 1, a connecting block 2 and a chalk clamp 3, characterized in that one side of the device body 1 is fixedly connected with the connecting block 2, and the other side of the connecting block 2 is fixedly connected with the chalk clamp 3, and the other side of the chalk clamp 3 is provided with a pull rod 4, and the side of the pull rod 4 close to the chalk clamp 3 is fixedly connected with a connecting rod 14, the connecting rod 14 runs through the chalk clamp 3 as a whole, and the inner side of the connecting rod 14 is fixedly connected with a clamp 5, and one side of the clamp 5 is fixedly connected with a spring 15, and a pulley 13 is provided at the bottom of the device body 1. When using this device to draw a straight line, the teacher can operate it by pulling the pull rod 4, and pulling the pull rod 4 makes the pull rod 4 drive the clamp 5 to move outward through the connecting rod 14. In this process, The teacher can insert the chalk into the inner side of the chalk clamp 3. When the chalk is inserted, the teacher releases the pull rod 4, so that the clamp 5 approaches the chalk inside the chalk clamp 3 under the elastic force of the spring 15. In this process, the clamp 5 clamps the chalk and is fixed to the inner wall of the chalk clamp 3, completing the clamping effect of the chalk. Then the teacher attaches the device to the blackboard surface, so that the chalk inside the chalk clamp 3 is against the blackboard surface, and then adjusts the direction of the device to the direction in which the straight line needs to be drawn. In this process, the teacher moves the device on the blackboard surface by holding the handheld block 11, and slides on the board surface through the pulley 13. Through such operation, the teacher does not need to use force to control the direction of the straight line, and can draw a straighter straight line.

[0028] The pulley 13 as a whole is composed of a movable wheel, an outer shell and a rotating shaft. The outer shell is fixedly connected to the bottom of the device body 1, and the rotating shaft is movably connected to both sides of the outer shell. The inner side of the rotating shaft is embedded with a movable wheel. When the device slides on the blackboard, the movable wheel rotates on the inner side of the outer shell through the rotating shaft. The clamping plate 5 is generally arc-shaped, and a rubber pad is provided on the inner side of the clamping plate 5. The rubber pad can enhance the friction between the clamping plate 5 and the chalk to avoid the chalk on the inner side of the clamping plate 5 from loosening during the line drawing process.

[0029] The upper surface of the device body 1 is movably connected with a turntable 6, and the upper end of the turntable 6 is fixedly connected with a base 7, the inner side of the base 7 is movably connected with a movable rod 8, and one end of the movable rod 8 is movably connected with a cursor leg turntable 12, the other side of the cursor leg turntable 12 is fixedly connected with a cursor leg 9, and the other end of the cursor leg 9 is fixedly connected with a chalk plug rod 10, a second rotating shaft is provided on the inner side of the base 7, and the second rotating shaft limits the maximum rotation angle, the maximum rotation angle of the second rotating shaft is 90 degrees, and the movable rod 8 is movably connected to the base 7 through the second rotating shaft, the movable rod 8 is L-shaped as a whole, and a rectangular groove is provided at one end of the movable rod 8 close to the cursor leg 9, and the cursor leg turntable 12 is located on the inner side of the rectangular groove, so that the teacher can draw a circular pattern on the blackboard when he needs to. When drawing a circle, the teacher can move the movable rod 8 out of the groove of the hand-held block 11 so that the movable rod 8 is perpendicular to the turntable 6, and then the teacher can unscrew the cursor leg 9 from the inner side of the movable rod 8. After the cursor leg 9 is unscrewed, the teacher can insert the chalk into the inner side of the chalk plug rod 10, and then rotate the cursor leg 9 through the cursor leg turntable 12. In this way, the landing point of the chalk on the inner side of the chalk plug rod 10 is adjusted. After the adjustment is completed, the teacher can complete the circle drawing by rotating the movable rod 8 to rotate the turntable 6 on the upper surface of the device body 1. When not drawing a circle, the teacher can reset the cursor leg 9 and the movable rod 8 to the two grooves of the hand-held block 11 through the above structure to avoid the cursor leg 9 and the movable rod 8 affecting the teacher during the process of drawing a straight line.

[0030] A hand-held block 11 is fixedly connected to the upper surface of the device body 1, and the hand-held block 11 is divided into two parts. The two parts of the hand-held block 11 are symmetrically arranged on both sides of the upper surface of the device body 1 with the turntable 6 as the center, and two strip grooves are provided on the inner side of the hand-held block 11 on one side. A rubber pad is fixedly connected to the outer surface of the hand-held block 11. Through the rubber pad on the outer surface of the hand-held block 11, when the teacher holds the hand-held block 11 and slides the device to draw a straight line, the rubber pad can increase the friction between the hand-held block 11 and the teacher's palm, thereby reducing the probability of the device slipping from the inside of the palm.

[0031] Working principle: When using the device to draw a straight line, the teacher can operate it by pulling the pull rod 4. Pulling the pull rod 4 makes the pull rod 4 drive the splint 5 to move outward through the connecting rod 14. In this process, the teacher can insert the chalk into the inner side of the chalk clamp 3. When the chalk is inserted, the teacher releases the pull rod 4, so that the splint 5 is close to the chalk inside the chalk clamp 3 under the elastic force of the spring 15. In this process, the splint 5 clamps the chalk and is fixed on the inner wall of the chalk clamp 3, completing the clamping effect of the chalk. Then the teacher attaches the device to the blackboard surface so that the chalk inside the chalk clamp 3 is against the blackboard surface, and then adjusts the direction of the device to the direction in which the straight line needs to be drawn. In this process, the teacher moves the device on the blackboard surface by holding the handheld block 11, and slides on the board surface through the pulley 13. Through such operation, the teacher does not need to use force to control the direction of the straight line, and can draw a straighter straight line.

[0032] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0033] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A drawing auxiliary device, comprising a device body (1), a connecting block (2) and a chalk clamp (3), characterized in that: A connecting block (2) is fixedly connected to one side of the device body (1), and a chalk clamp (3) is fixedly connected to the other side of the connecting block (2). A pull rod (4) is provided on the other side of the chalk clamp (3). A connecting rod (14) is fixedly connected to the side of the pull rod (4) close to the chalk clamp (3). The connecting rod (14) passes through the chalk clamp (3) as a whole, and a clamp (5) is fixedly connected to the inner side of the connecting rod (14). A spring (15) is fixedly connected to one side of the clamp (5). A pulley (13) is provided at the bottom of the device body (1).

2. A drawing auxiliary device according to claim 1, characterized in that: The pulley (13) as a whole is composed of a movable wheel, an outer shell and a rotating shaft. The outer shell is fixedly connected to the bottom of the device body (1), and the rotating shaft is movably connected to both sides of the outer shell. The inner side of the rotating shaft is embedded with the movable wheel.

3. A drawing auxiliary device according to claim 1, characterized in that: The upper surface of the device body (1) is movably connected to a turntable (6), and the upper end of the turntable (6) is fixedly connected to a base (7), the inner side of the base (7) is movably connected to a movable rod (8), and one end of the movable rod (8) is movably connected to a cursor leg turntable (12), the other side of the cursor leg turntable (12) is fixedly connected to a cursor leg (9), and the other end of the cursor leg (9) is fixedly connected to a chalk plug rod (10).

4. A drawing auxiliary device according to claim 1, characterized in that: A hand-held block (11) is fixedly connected to the upper surface of the device body (1), and the hand-held block (11) is divided into two parts as a whole. The two parts of the hand-held block (11) are symmetrically arranged on both sides of the upper surface of the device body (1) with the turntable (6) as the center, and two strip-shaped grooves are arranged on the inner side of the hand-held block (11) on one side, and a rubber pad is fixedly connected to the outer surface of the hand-held block (11).

5. A drawing auxiliary device according to claim 3, characterized in that: A second rotating shaft is provided on the inner side of the base (7), and the movable rod (8) is movably connected to the base (7) via the second rotating shaft.

6. A drawing auxiliary device according to claim 1, characterized in that: The clamping plate (5) is arc-shaped as a whole, and a rubber pad is provided on the inner side of the clamping plate (5).

7. A drawing auxiliary device according to claim 3, characterized in that: The movable rod (8) is L-shaped as a whole, and a rectangular groove is provided at one end of the movable rod (8) close to the cursor leg (9), and the cursor leg rotating disk (12) is located inside the rectangular groove.

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