Trolley assembly for education demonstration

Abstract

The invention relates to the technical field of demonstration teaching aids, in particular to a trolley assembly for education demonstration, which comprises a trolley base, a motor clamping piece is arranged at the bottom of the trolley base, and a plurality of threaded holes are uniformly distributed in the trolley base. The threaded holes in each row and the threaded holes in each column are staggered, the interval between every two adjacent threaded holes in each row is equal to the interval between every two adjacent threaded holes in each column, the connecting line between every two adjacent threaded holes in the circumferential direction of any point is in a rhombus shape, and the motor clamping pieces are fixedly connected with the threaded holes. In order to meet the requirements of usability, convenience in installation and DIY (do it yourself) of more vehicle teaching aids, the trolley base is transformed, the hole site design and size are optimized, and the motor clamping piece and the trolley base are fixed, so that the operability and DIY performance of the product are improved.

Description

Technical Field

[0001] The invention relates to the technical field of demonstration teaching aids, in particular to a trolley assembly used for educational demonstration. Background Art

[0002] Related background introduction: With the development of the teaching aids market, there are many types of small cars used for teaching aids on the market, including wooden sticking, plastic building blocks, and screws. Among these car teaching aids, plastic ones are the most common. However, the existing teaching aids of this type have certain disadvantages. For example, the clamping is not firm enough, it is easy to be damaged when it falls to the ground, it is more like a model, there is no commonality between the types, and it is not conducive to reuse.

[0003] The base of the car is currently commonly seen in the building block plug-in type and the plastic part integrated type. The building block plug-in type usually needs to be assembled with building blocks. When the vehicle is too large, it is inconvenient to move and unstable. It may tilt and shake, causing safety hazards. Although the plastic part integrated type can be moved and stable, the base and the whole are fixed with screws, and there are only specific holes and sizes. Motor clips are generally exclusive injection molding products. The clips need to be placed in exclusive positions. If there are slight differences in the size of the holes or the distance is misplaced, they cannot be assembled.

[0004] There are many types of toy cars, but the specifications and sizes of the bases may not be uniform. This may result in some bases not being able to adapt to all types of cars, limiting children's play options. In addition, the design of some bases may be too complicated or cumbersome, increasing the difficulty and time cost of installation. Plastic car components are all integrated and cannot be moved. Building block car components are separate, but there are too many parts, which affects the building space and experience. Summary of the invention

[0005] The purpose of the present invention is to provide a trolley assembly for educational demonstration, which can solve the above-mentioned technical problems.

[0006] The present invention provides a trolley assembly for educational demonstration, including a trolley base, a motor clamp is provided at the bottom of the trolley base, a plurality of threaded holes are evenly distributed on the trolley base, the threaded holes in each row and the threaded holes in each column are staggered with each other, and the interval between adjacent threaded holes in each row and the interval between adjacent threaded holes in each column are equal, and the connecting line between adjacent threaded holes in the circumferential direction at any point is a rhombus, and the motor clamp is fixedly connected to the threaded holes. Specifically, the base has holes adapted for universal M3 screws, and the gap between the threaded holes in each row and each column is 0.5 cm, which are distributed in a rhombus, and the corresponding holes can be selected for assembly according to their own needs. For younger students who cannot use a screwdriver, the holes in the base can be fixed with rivets in addition to being fixed with screws, which reduces the difficulty.

[0007] In addition, the base of the car is an open mold injection molded part made of ABS material, white in color, looks clean and beautiful, and measures 17.3cm*9.3cm, which meets the size of most racing cars. The edges are all rounded to prevent students from cutting their hands during use, thereby improving safety. There are six 1cm raised parts on each of the four sides to distinguish the front and back sides. At the same time, raising the base can prevent the base from being too compact with other parts. The raised parts can be connected with screws and copper columns to add other bases, or parts that can be DIY expanded, such as car covers. The base itself can be connected with parts such as steering seats and angle brackets, making the car more functional.

[0008] Preferably, the motor clamp is provided with ears on two opposite sides of one end close to the trolley base, and the ears are provided with a second threaded hole, and the second threaded hole is connected to the threaded hole.

[0009] Preferably, the threaded hole is fixedly connected to the second threaded hole on the motor clamp by means of a screw.

[0010] Preferably, the threaded hole is fixedly connected to the second threaded hole on the motor clamp by a rivet.

[0011] Preferably, four protrusions are evenly distributed on the frame of the motor clamp between the ears, and the protrusions are inserted into the threaded holes.

[0012] Preferably, the length of the protruding point is equal to the thickness of the trolley base.

[0013] Specifically, the motor clamp is also an open mold injection molded part made of ABS material and black in color. There are two threaded holes on one side of the motor clamp that can be connected to the base of the trolley. The length is 3cm, which is exactly the 4 threaded holes of the base of the trolley. It can be installed horizontally or vertically. In addition to screws, rivets can also be used for installation, so that students of different ages can install and disassemble by themselves. There are four 0.2cm raised points in the middle of the two threaded holes, which are consistent with the thickness of the base of the trolley. The four raised points serve as positioning points. The position of the motor clamp can be observed from above the base of the trolley, which can avoid installation errors and further fix the motor clamp.

[0014] Preferably, four motor clamps are provided, which are respectively located at the four corners of the bottom of the trolley base.

[0015] Preferably, buckles are provided on both sides of the motor clamp to fix the motor. Specifically, buckles facing upward are designed on both sides of the motor clamp to fix the motor and prevent it from falling off. The buckle edge is arc-shaped to prevent students from cutting their hands during use, thereby improving safety.

[0016] Preferably, the motor is a TT motor, and a hole groove is provided on one side of the motor clamp for fixing a raised portion on one side of the motor shaft of the TT motor. A column is relatively provided on the inner side of the motor clamp for fixedly engaging with a through hole of the TT motor.

[0017] Preferably, the hole groove of the motor clamp is on the same horizontal line as the motor shaft of the TT motor, and the motor shaft of the TT motor is fixedly connected with a Mecanum wheel.

[0018] Beneficial effects:

[0019] In order to meet the needs of more vehicle teaching aids for ease of use, convenient installation and DIY, the present invention has modified the base of the trolley, optimized the hole design and size, and used motor clips to fix the base of the trolley, thereby improving the product's ease of operation and DIY. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the positional relationship between the vehicle base and the motor clamp in the present invention;

[0022] Figure 2 It is a schematic diagram of the top structure of the motor clamp in the present invention;

[0023] Figure 3 This is a schematic diagram of the distribution of threaded holes in the trolley base;

[0024] Figure 4 It is a structural schematic diagram of the motor clamp in the present invention;

[0025] Figure 5 It is a schematic diagram of the position relationship between the motor clamp and the TT motor in the present invention;

[0026] Figure 6 It is a schematic diagram of the side structure of the TT motor in the present invention after being installed behind the motor clamp;

[0027] Figure 7 It is a schematic diagram of the overall structure of the trolley assembly of the present invention.

[0028] Explanation of the accompanying drawings: 1-trolley base, 2-motor clamp, 3-threaded hole, 4-ear, 5-second threaded hole, 6-protruding point, 7-clip, 8-TT motor, 801-motor shaft, 9-hole groove, 10-column, 11-Mecanum wheel, 12-protruding part. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] 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, rather than indicating or implying 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 limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it 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 connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] A trolley assembly for educational demonstrations, such as Figure 1-7As shown, the trolley base 1 includes a motor clamp 2 at the bottom of the trolley base 1, and a plurality of threaded holes 3 are evenly distributed on the trolley base 1. The threaded holes in each row and each column are staggered with each other, and the intervals between adjacent threaded holes in each row and adjacent threaded holes in each column are equal. The connecting line between adjacent threaded holes in the circumferential direction at any point is a rhombus, and the motor clamp 2 is fixedly connected to the threaded holes 3. Specifically, the base has holes adapted for universal M3 screws, and the gap between the threaded holes in each row and each column is 0.5 cm, which are distributed in a rhombus. The corresponding holes can be selected for assembly according to their own needs. For younger students who cannot use a screwdriver, the holes in the base can be fixed with rivets in addition to screws, which reduces the difficulty.

[0034] In addition, the car base 1 is an open mold injection molded part made of ABS material, white in color, looks clean and beautiful, and has a size of 17.3cm*9.3cm, which meets the size of most racing cars. The edges are all rounded to prevent students from cutting their hands during use, thereby improving safety. There are six 1cm raised parts on each of the four sides to distinguish the front and back sides. At the same time, raising the base can prevent the base from being too compact with other parts. The raised parts can be connected with screws and copper columns to add other bases, or parts that can be DIY expanded, such as car covers. The base itself can be connected with parts such as steering seats and angle brackets, making the car more functional.

[0035] The motor clamp 2 is provided with ears 4 on both sides opposite to one end of the trolley base 1, and the ears 4 are provided with second threaded holes 5, which are connected with the threaded holes 3. The threaded holes 3 and the second threaded holes 5 on the motor clamp 2 are fixedly connected by screws or rivets. Four protrusions 6 are evenly distributed on the frame of the motor clamp 2 between the ears 4, and the protrusions 6 are inserted into the threaded holes 3. The length of the protrusions 6 is equal to the thickness of the trolley base 1.

[0036] Specifically, the motor clamp 2 is also an open mold injection molded part, made of ABS material and black in color. There are two threaded holes on one side of the motor clamp 2 that can be connected to the trolley base, and can be installed horizontally or vertically. In addition to screws, rivets can also be used for installation, so that students of different ages can install and disassemble by themselves. There are four 0.2cm raised points 6 in the middle of the two threaded holes, which are consistent with the thickness of the trolley base 1. The four raised points 6 serve as positioning points, and the position of the motor clamp 2 can be observed from above the trolley base 1, which can avoid installation errors and further fix the motor clamp 2.

[0037] There are four motor clamps 2, which are respectively located at the four corners of the bottom of the trolley base 1. Buckles 7 for fixing the motor are provided on both sides below the motor clamps 2. Specifically, upward buckles 7 are designed on both sides below the motor clamps 2 to fix the motor and prevent it from falling off. The edge of the buckle 7 is in an arc shape to prevent students from cutting their hands during use, thereby improving safety.

[0038] The motor is a TT motor 8 , and a motor shaft 801 of the TT motor 8 is fixedly connected to a Mecanum wheel 11 .

[0039] The height of the motor clamp 2 is 4cm, and the size of the TT motor 8 is 7cm*2.7cm*2.3cm (length, width and height). The motor clamp 2 can just wrap the TT motor 8. There is a hole groove 9 on one side of the motor clamp 2, which is used to fix the raised part 12 in front of the motor shaft 801 of the TT motor 8. The hole groove 9 can be used as a positioning hole to distinguish the direction of the TT motor. In addition, there is a column 10 on the inner side of the motor clamp 2, which can be fixed with the position of the through hole (a screw hole) of the TT motor 8. The column 10 and the hole groove 9 fix the TT motor 8 and the motor clamp 2 in a two-point fixing manner, realizing the limit self-locking function, which can avoid the situation where the screws are loose when fixed with screws.

[0040] The hole 9 of the motor clamp 2 is on the same horizontal line as the motor shaft 801, and is about 2.5 cm high from the trolley base 1, which is suitable for most Mecanum wheels with a diameter of 5 cm. After the motor clamp 2 is installed in the outermost hole of the trolley base 1, the motor shaft 801 extends 0.4 cm outward from the edge of the trolley base, which can avoid the wheel contacting the base and causing wheel running problems.

[0041] This solution product has good stability and DIYability while adapting to the sizes of most competition vehicles. After using the car chassis and motor clamps to form the car assembly, you only need to install the motor and wheels on the motor holder to quickly build a DIY car, which reduces the cumbersome steps of the previous DIY vehicle model and reduces the difficulty. At the same time, the multiple holes on the base are highly scalable, and students can freely play according to their needs. They can not only splice with other electronic components on the surface of the base, but also increase the number of layers or other structures to enrich it. The holes support the common M3 screws and rivets on the market. The size specifications are clear and standard, and the longer size can avoid the instability caused by the connection of multiple bases. There are multiple positioning points on the motor clamps that can achieve self-locking limit with the base and motor, and can be fixed in all directions. It is not easy to fall off, which is very conducive to the development of STEM teaching.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trolley assembly for educational demonstration, characterized in that: It includes a trolley base, a motor clamp is provided at the bottom of the trolley base, a plurality of threaded holes are evenly distributed on the trolley base, the threaded holes in each row and the threaded holes in each column are staggered with each other, and the interval between adjacent threaded holes in each row and the interval between adjacent threaded holes in each column are equal, the connecting line between adjacent threaded holes in the circumferential direction at any point is a rhombus, and the motor clamp is fixedly connected to the threaded holes.

2. The trolley assembly for educational demonstration according to claim 1, characterized in that: The motor clamp is provided with ears on two opposite sides of one end close to the trolley base, and the ears are provided with second threaded holes, and the second threaded holes are connected with the threaded holes.

3. The trolley assembly for educational demonstration according to claim 2, characterized in that: The threaded hole is fixedly connected to the second threaded hole on the motor clamp by means of screws.

4. The trolley assembly for educational demonstration according to claim 2, characterized in that: The threaded hole is fixedly connected to the second threaded hole on the motor clamp by a rivet.

5. The trolley assembly for educational demonstration according to claim 2, characterized in that: Four protruding points are evenly distributed on the frame of the motor clamp between the ears, and the protruding points are inserted into the threaded holes.

6. The trolley assembly for educational demonstration according to claim 5, characterized in that: The length of the protruding point is equal to the thickness of the trolley base.

7. The trolley assembly for educational demonstration according to claim 1, characterized in that: There are four motor clamps, which are respectively located at the four corners of the bottom of the trolley base.

8. The trolley assembly for educational demonstration according to claim 1, characterized in that: Buckles for fixing the motor are provided on both sides below the motor clamp.

9. The trolley assembly for educational demonstration according to claim 8, characterized in that: The motor adopts a TT motor, and holes are provided on both sides of the motor clamp for fixing the raised part on one side of the motor shaft of the TT motor. A column is provided on the inner side of the motor clamp for fixing and clamping with the through hole of the TT motor.

10. The trolley assembly for educational demonstration according to claim 9, characterized in that: The hole groove of the motor clamp is on the same horizontal line as the motor shaft of the TT motor, and the motor shaft of the TT motor is fixedly connected with a Mecanum wheel.

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