Spiral mathematics teaching demonstrator

Abstract

The utility model discloses a spiral mathematics teaching demonstrator which comprises a base, the middle of the top end of the base is rotatably connected with a rotating rod through a bearing, the left side of the top end of the base is fixedly connected with a driving mechanism, and the top end of the rotating rod is fixedly connected with a fixing frame. Strip-shaped grooves are formed in the left-right symmetrical positions of the front side of the fixing frame in a penetrating mode, and a demonstration board is installed on the front side of the fixing frame. The teaching demonstration device is provided with the lifting mechanism, the output end of the servo motor drives the threaded rod to rotate, so that the lifting piece moves up and down, the demonstration board is driven to move up and down, and the height of the demonstration board is adjusted; and a movable part is driven to move, so that a rack moves, a gear is driven to rotate, a rotating rod is driven to rotate, the angle of the demonstration board is adjusted, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching equipment, in particular to a spiral mathematics teaching demonstrator. Background Art

[0002] In mathematics teaching, a lot of graphics and formulas are needed for teaching. In order to save time on blackboard writing in class, teachers usually make some pictures before class, and then fix these pictures on the teaching demonstrator for display, so as to facilitate more vivid teaching.

[0003] A Chinese patent discloses a spiral mathematics teaching demonstrator (CN202123043823.7), including a base, the upper end of the base is rotatably connected to a rotating shaft, the side wall of the rotating shaft is symmetrically provided with two slide grooves, the inner walls of the two slide grooves are slidably connected to two demonstration boards, the side walls of the two demonstration boards are fixedly connected with a placement block, the upper end of the placement block is provided with a placement groove, and the side wall of the demonstration board is provided with a groove. The utility model drives the rotating shaft to rotate by turning the handle, and then drives the demonstration board to rotate, and adjusts the angle of the demonstration board to facilitate students to watch. It adopts a mechanical structure, is simple to operate, and is very convenient to use.

[0004] However, when the above patent is in use, the first bevel gear is driven to rotate by turning the handle, the second bevel gear is driven to rotate, and then the rotating shaft is driven to rotate, and the demonstration board is driven to rotate, so as to adjust the angle of the demonstration board. After the angle is adjusted to a suitable position, the limit rod is inserted into the limit groove to limit the rotation position of the rotating rod. This method is too troublesome, and there is an area without a limit groove between two adjacent limit grooves. If the limit rod is to be inserted into the unlimited groove area, it is necessary to open another limit groove, which makes the device have certain limitations in angle adjustment and fixation. Utility Model Content

[0005] In order to solve the above technical problems, a spiral mathematics teaching demonstrator is provided. This technical solution solves the problems of troublesome angle adjustment and limitations raised in the above background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A spiral mathematics teaching demonstrator comprises a base, wherein the middle part of the top end of the base is rotatably connected to a rotating rod through a bearing, a driving mechanism is fixedly connected to the left side of the top end of the base, a fixed frame is fixedly connected to the top end of the rotating rod, strip grooves are penetrated at left and right symmetrical positions on the front side of the fixed frame, a demonstration board is installed on the front side of the fixed frame, a lifting mechanism is installed on the fixed frame, the lifting mechanism comprises a servo motor, the servo motor is fixedly installed at the middle position of the bottom end inside the fixed frame, the output end of the servo motor is fixedly connected to the bottom end of the threaded rod, and the top end of the threaded rod is rotatably connected to the inner top wall of the fixed frame, a lifting member is threadedly connected to the surface of the threaded rod, and the front side of the lifting member penetrates the strip groove and is fixedly connected to the back of the demonstration board.

[0008] Preferably, guide rods are provided on both sides of the threaded rod, the guide rods are fixedly connected to the inside of the fixed frame, and the lifting member is slidably connected to the surface of the guide rods.

[0009] Preferably, the driving mechanism includes a connecting seat, a screw rod, a guide rail, a movable part and a rack, the bottom end of the connecting seat is fixedly connected to the base, the screw rod is rotatably connected to the inside of the connecting seat, the movable part is threadedly connected to the surface of the screw rod, and the outer side of the movable part is fixedly connected to the rack, a driving motor is fixedly installed on the outer side of the connecting seat, and the output end of the driving motor extends to the inside of the connecting seat and is fixedly connected to one end of the screw rod.

[0010] Preferably, the guide rail is fixedly connected to the inner bottom end of the connecting seat, and the movable member is slidably connected to the surface of the connecting seat.

[0011] Preferably, a gear meshing with the rack is fixedly mounted on the surface of the rotating rod.

[0012] Preferably, two groups of mounting grooves are provided at left and right symmetrical positions on the front side of the demonstration board, and a pressure plate is fixedly connected to the inside of the mounting groove via a plurality of groups of fastening springs, and a pull ring is provided on the pressure plate.

[0013] Compared with the prior art, the utility model provides a spiral mathematics teaching demonstrator, which has the following beneficial effects:

[0014] The utility model is provided with a lifting mechanism, and the output end of the servo motor drives the threaded rod to rotate, so that the lifting member moves up and down, thereby driving the demonstration board to move up and down, and adjusting the height of the demonstration board; secondly, a driving mechanism and a gear are provided for coordinated use, and the output end of the driving motor drives the screw rod to rotate, drives the movable member to move, causes the rack to move, thereby drives the gear to rotate, drives the rotating rod to rotate, and realizes the adjustment of the angle of the demonstration board, meets the needs of users, and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the driving mechanism in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the lifting mechanism in the utility model;

[0018] Figure 4 It is a structural schematic diagram of the demonstration board in the utility model.

[0019] The numbers in the figure are:

[0020] 1. Base; 101. Bearing; 102. Rotating rod; 103. Gear; 2. Fixed frame; 201. Strip groove; 3. Demonstration board; 301. Mounting groove; 302. Fastening spring; 303. Pressing plate; 304. Pull ring; 4. Driving mechanism; 401. Connecting seat; 402. Screw rod; 403. Guide rail; 404. Movable part; 405. Rack; 5. Lifting mechanism; 501. Servo motor; 502. Threaded rod; 503. Guide rod; 504. Lifting part. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] Please refer to Figure 1 and Figure 3 As shown, a spiral mathematics teaching demonstrator comprises a base 1, a rotating rod 102 is rotatably connected to the middle of the top of the base 1 through a bearing 101, a driving mechanism 4 is fixedly connected to the left side of the top of the base 1, a fixed frame 2 is fixedly connected to the top of the rotating rod 102, strip grooves 201 are penetrated at left and right symmetrical positions on the front side of the fixed frame 2, a demonstration board 3 is installed on the front side of the fixed frame 2, and a lifting mechanism 5 is installed on the fixed frame 2.

[0023] Please refer to Figure 3As shown, the lifting mechanism 5 includes a servo motor 501, which is fixedly installed at the middle position of the bottom end of the fixed frame 2. The output end of the servo motor 501 is fixedly connected to the bottom end of the threaded rod 502, and the top end of the threaded rod 502 is rotatably connected to the inner top wall of the fixed frame 2. The surface of the threaded rod 502 is threadedly connected with a lifting member 504, and the front side of the lifting member 504 passes through the strip groove 201 and is fixedly connected to the back of the demonstration board 3. Guide rods 503 are arranged on both sides of the threaded rod 502, and the guide rods 503 are fixedly connected to the inside of the fixed frame 2, and the lifting member 504 is slidably connected to the surface of the guide rods 503.

[0024] When the height of the demonstration board 3 needs to be adjusted, the output end of the servo motor 501 drives the threaded rod 502 to rotate, so that the lifting member 504 moves up and down, thereby driving the demonstration board 3 to move up and down, thereby adjusting the height of the demonstration board 3.

[0025] Please refer to Figure 2 As shown, the driving mechanism 4 includes a connecting seat 401, a screw rod 402, a guide rail 403, a movable part 404 and a rack 405. The bottom end of the connecting seat 401 is fixedly connected to the base 1, the screw rod 402 is rotatably connected to the inside of the connecting seat 401, the movable part 404 is threadedly connected to the surface of the screw rod 402, and the outer side of the movable part 404 is fixedly connected to the rack 405. A driving motor is fixedly installed on the outer side of the connecting seat 401, and the output end of the driving motor extends to the inside of the connecting seat 401 and is fixedly connected to one end of the screw rod 402. The guide rail 403 is fixedly connected to the inner bottom end of the connecting seat 401, and the movable part 404 is slidably connected to the surface of the connecting seat 401, and the surface of the rotating rod 102 is fixedly installed with a gear 103 meshing with the rack 405.

[0026] When the angle of the demonstration board 3 needs to be adjusted, the output end of the driving motor drives the lead screw 402 to rotate, drives the movable part 404 to move, causes the rack 405 to move, thereby drives the gear 103 to rotate, drives the rotating rod 102 to rotate, and realizes the adjustment of the angle of the demonstration board 3.

[0027] Further in this embodiment, please refer to Figure 4 As shown, two groups of mounting grooves 301 are provided at left and right symmetrical positions on the front side of the demonstration board 3. The interior of the mounting grooves 301 is fixedly connected to a pressure plate 303 via a plurality of groups of fastening springs 302. A pull ring 304 is provided on the pressure plate 303. By pulling the pull ring 304, the fastening spring 302 is stretched, and a pre-made picture is placed on the front side of the demonstration board 3. Then, the pull ring 304 is loosened, and the pressure plate 303 moves under the action of the fastening spring 302 restoring its deformation, so as to squeeze and fix the picture.

[0028] The working principle and use process of the device: When the utility model is used, the fastening spring 302 is stretched by pulling the pull ring 304, and the pre-made picture is placed on the front side of the demonstration board 3. Then, the pull ring 304 is loosened, and the fastening spring 302 recovers its deformation, so that the pressing plate 303 moves to squeeze and fix the picture. Then, the output end of the servo motor 501 drives the threaded rod 502 to rotate, so that the lifting member 504 moves up and down, thereby driving the demonstration board 3 to move up and down, and adjusting the height of the demonstration board 3. The output end of the driving motor drives the screw rod 402 to rotate, drives the movable member 404 to move, and drives the rack 405 to move, thereby driving the gear 103 to rotate, and drives the rotating rod 102 to rotate, so as to adjust the angle of the demonstration board 3, meet the needs of users, and improve the practicality of the device to a certain extent.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A spiral mathematics teaching demonstrator, characterized in that: The invention comprises a base (1), wherein the middle part of the top of the base (1) is rotatably connected to a rotating rod (102) via a bearing (101), a driving mechanism (4) is fixedly connected to the left side of the top of the base (1), a fixed frame (2) is fixedly connected to the top of the rotating rod (102), strip grooves (201) are provided through the front side of the fixed frame (2) at left and right symmetrical positions, a demonstration board (3) is installed on the front side of the fixed frame (2), and a lifting mechanism (5) is installed on the fixed frame (2); wherein the lifting mechanism (5) comprises a servo motor (501), the servo motor (501) being fixedly mounted at the middle position of the bottom end inside the fixed frame (2), the output end of the servo motor (501) being fixedly connected to the bottom end of the threaded rod (502), and the top end of the threaded rod (502) being rotatably connected to the inner top wall of the fixed frame (2), the surface of the threaded rod (502) being threadedly connected to a lifting member (504), and the front side of the lifting member (504) passing through the strip groove (201) and being fixedly connected to the back of the demonstration board (3).

2. A spiral mathematics teaching demonstrator according to claim 1, characterized in that: Guide rods (503) are provided on both sides of the threaded rod (502); the guide rods (503) are fixedly connected to the inside of the fixed frame (2); and the lifting member (504) is slidably connected to the surface of the guide rods (503).

3. A spiral mathematics teaching demonstrator according to claim 1, characterized in that: The driving mechanism (4) comprises a connecting seat (401), a screw rod (402), a guide rail (403), a movable part (404) and a rack (405); the bottom end of the connecting seat (401) is fixedly connected to the base (1); the screw rod (402) is rotatably connected to the inside of the connecting seat (401); the movable part (404) is threadedly connected to the surface of the screw rod (402); and the outer side of the movable part (404) is fixedly connected to the rack (405); a driving motor is fixedly mounted on the outer side of the connecting seat (401); the output end of the driving motor extends to the inside of the connecting seat (401) and is fixedly connected to one end of the screw rod (402).

4. A spiral mathematics teaching demonstrator according to claim 3, characterized in that: The guide rail (403) is fixedly connected to the inner bottom end of the connection seat (401), and the movable member (404) is slidably connected to the surface of the connection seat (401).

5. A spiral mathematics teaching demonstrator according to claim 3, characterized in that: A gear (103) meshing with the rack (405) is fixedly mounted on the surface of the rotating rod (102).

6. A spiral mathematics teaching demonstrator according to claim 1, characterized in that: Two groups of installation grooves (301) are provided at left and right symmetrical positions on the front side of the demonstration board (3), and a pressure plate (303) is fixedly connected to the inside of the installation groove (301) via a plurality of groups of fastening springs (302), and a pull ring (304) is provided on the pressure plate (303).

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