Anti-dropping structure for transmission gear shaft of model car

Abstract

The utility model relates to the technical field of gear shafts, in particular to an anti-falling structure for a transmission gear shaft of a model car. According to the technical scheme, the device comprises a gear shaft assembly, the gear shaft assembly comprises a shaft rod and a transmission gear, and the transmission gear is fixedly arranged at one end of the shaft rod; the cup receiving assembly comprises a connecting block, one end of the connecting block is fixedly connected with a shaft sleeve, and one end of the shaft rod is movably connected with the shaft sleeve in a sleeved mode; and the limiting assembly is arranged at the sleeving part of the shaft rod and the shaft sleeve. According to the utility model, the connection between the gear shaft assembly and the cup receiving assembly is more stable, looseness or separation is avoided, the transmission precision and stability are improved, the transmission is more stable, and the assembly and disassembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of gear shafts, in particular to an anti-dropping structure for a transmission gear shaft of a model car. Background Art

[0002] Model cars usually refer to scaled-down car models that have similar appearance and details to real cars. Model cars can be static or dynamic. Dynamic model cars are usually equipped with electric or internal combustion engines and can run on tracks or outdoors. Model cars are made of materials including metal, plastic, wood, etc. Their appearance and details can be customized according to different needs. Model cars are a popular choice for car enthusiasts and collectors. They can show the history and design of cars, and can also be used as toys and entertainment items. Model cars are usually equipped with a transmission gear shaft, which can transfer power from the engine to the wheels, thereby enabling the movement of the model car.

[0003] The traditional transmission gear shaft is connected to the connecting cup by a key connection. The specific operation is to process the corresponding key slots on the transmission gear shaft and the connecting cup, and then put the key into the key slot. However, this key connection method has poor reliability. During the transmission process, the key is easily worn, loosened or broken, causing the transmission gear shaft and the connecting cup to separate, affecting the transmission accuracy and stability.

[0004] Therefore, the utility model provides a model car transmission gear shaft anti-drop structure. Utility Model Content

[0005] The purpose of the utility model is to propose a model car transmission gear shaft anti-detachment structure to address the problem that in the background technology, the traditional transmission gear shaft is connected to the gear by a key, and the reliability of this key connection method is poor. The key is prone to loosening or breaking, resulting in the transmission gear shaft and the gear being separated, affecting the transmission accuracy and stability.

[0006] The technical solution of the utility model is a model car transmission gear shaft anti-detachment structure, comprising: a gear shaft assembly, the gear shaft assembly comprises a shaft rod and a transmission gear, the transmission gear is fixedly arranged at one end of the shaft rod; a cup assembly, the cup assembly comprises a connecting block, one end of the connecting block is fixedly connected with a shaft sleeve, one end of the shaft rod is movably sleeved with the shaft sleeve; a limit assembly is arranged at the sleeve joint of the shaft rod and the shaft sleeve.

[0007] Optionally, the limit assembly includes a limit sleeve, a limit rod, and a limit bolt, the limit sleeve is movably sleeved on the outer wall of the sleeve, the limit rod movably passes through the shaft rod and the second through hole, and the limit bolt is threadedly connected between the sleeve and the limit sleeve.

[0008] Optionally, a first through hole is formed at one end of the shaft rod, and a second through hole is formed on an outer wall of the sleeve, and the sleeve is rotated to allow the limiting clamping rod to move through the first through hole and the second through hole.

[0009] Optionally, two threaded holes are symmetrically opened on the outer wall of the sleeve, and the threaded holes are connected to the second through hole and the inner cavity of the sleeve. The outer wall of the limiting sleeve is opened with upper and lower third through holes. The sleeve is rotated so that the threaded holes and the third through holes are concentrically arranged. The limiting bolt passes through the third through hole and is threadedly connected to the threaded hole to prevent the clamping rod from loosening or detaching, thereby improving the transmission accuracy and stability.

[0010] Optionally, the threaded hole and the third through hole are symmetrically arranged.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects:

[0012] The utility model clamps one end of the shaft rod with the shaft sleeve, and inserts the limiting clamp rod into the first through hole and the second through hole, so as to limit the position of the gear shaft assembly, so that the connection between the gear shaft assembly and the connecting cup assembly is more stable, and loosening or separation is avoided, thereby improving the transmission accuracy and stability;

[0013] Furthermore, the limiting sleeve is sleeved on the outer wall of the shaft sleeve, and the limiting bolt is threadedly connected with the threaded hole and the third through hole, so as to limit the gear shaft assembly, make the transmission more stable, and facilitate installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a transmission gear shaft anti-drop structure for a model car of the utility model is given;

[0015] Figure 2 for Figure 1 Schematic diagram of the internal cross-sectional structure;

[0016] Figure 3 for Figure 1 Schematic diagram of the split structure.

[0017] Reference numerals:

[0018] 1. Shaft; 2. First through hole; 3. Transmission gear; 4. Connecting block; 5. Bushing; 6. Threaded hole; 7. Second through hole; 8. Limit sleeve; 9. Third through hole; 10. Limit rod; 11. Limit bolt. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Example

[0023] like Figure 1 As shown, a model car transmission gear shaft anti-detachment structure comprises: a gear shaft assembly, the gear shaft assembly comprises a shaft rod 1 and a transmission gear 3, the transmission gear 3 is fixedly arranged at one end of the shaft rod 1, and the shaft rod 1 and the transmission gear 3 are integrally formed; a cup assembly, the cup assembly comprises a connecting block 4, the outer wall of the connecting block 4 is provided with a card slot, which is convenient for connecting with other rotating components of the model car, one end of the connecting block 4 is fixedly connected with a shaft sleeve 5, and the interior of the shaft sleeve 5 is hollow, and one end of the shaft rod 1 is movably sleeved with the shaft sleeve 5; a limit assembly is arranged at the sleeve joint of the shaft rod 1 and the shaft sleeve 5.

[0024] like Figure 2 and Figure 3As shown, the limiting assembly includes a limiting sleeve 8, a limiting clamping rod 10, and a limiting bolt 11. The limiting sleeve 8 is movably sleeved on the outer wall of the shaft sleeve 5, and the limiting clamping rod 10 is movably penetrated through the interior of the shaft sleeve 5 through the third through hole 9 and the second through hole 7. The limiting bolt 11 is threadedly connected between the shaft sleeve 5 and the limiting sleeve 8, which is convenient for limiting the shaft sleeve 5 and the limiting sleeve 8. At the same time, the limiting sleeve 8 can limit the limiting clamping rod 10 to prevent it from moving, thereby improving the stability of the limit.

[0025] Furthermore, a first through hole 2 is opened at one end of the shaft rod 1, and a second through hole 7 is opened on the outer wall of the sleeve 5. The limiting rod 10 movably passes through the first through hole 2 and the second through hole 7, so that the limiting rod 10 can stably limit the first through hole 2 and the second through hole 7, and it is convenient for installation and disassembly, and reduces wear and tear, thereby improving the transmission accuracy and stability.

[0026] Secondly, the outer wall of the sleeve 5 is provided with two threaded holes 6, and the threaded holes 6 are connected with the second through hole 7, and the outer wall of the limiting sleeve 8 is provided with two third through holes 9. The sleeve 8 is rotated to make the threaded holes 6 and the third through holes 9 concentrically arranged, and the limiting bolt 11 is threadedly connected with the threaded holes 6 and the third through holes 9, which is convenient for limiting the limiting rod 10, thereby further improving the stability of the direct connection between the gear shaft assembly and the connecting cup assembly.

[0027] Furthermore, the threaded hole 6 and the third through hole 9 are symmetrically arranged to improve the stability of the sleeve connection between the limit bolt 11 and the limit sleeve 8, and at the same time facilitate installation and disassembly, and easy replacement.

[0028] The working principle of this embodiment is as follows: first, the limiting sleeve 8 is sleeved on the outer wall of the sleeve 5, and then one end of the shaft rod 1 is inserted into the sleeve 5 through the circular hole on one side of the limiting sleeve 8, and the shaft rod 1 and the limiting sleeve 8 are rotated respectively, so that the first through hole 2 and the third through hole 9 are respectively and neatly connected with the second through hole 7. The three holes are concentrically arranged, and after the corresponding positions are found, the third through hole 9 on the limiting sleeve 8 corresponds to the second through hole 7 and the first through hole 2 in sequence. Then, the limiting clamping rod 10 is inserted into the interior of the sleeve 5 through the third through hole 9, the second through hole 7, and the first through hole 2 in sequence, and the shaft rod 1 and the sleeve 5 are limited so that the shaft rod 1 and the sleeve 5 are stably connected.

[0029] Furthermore, the limiting sleeve 8 is manually rotated 90 degrees to connect the third through hole 9 on the outer wall of the limiting sleeve 8 with the corresponding position of the threaded hole 6. Then, a tool is used to screw one end of the limiting bolt 11 into the third through hole 9 and the threaded hole 6, so that the limiting sleeve 8 is stably sleeved on the outer wall of the sleeve 5, thereby limiting the limiting bolt 11 and preventing the limiting bolt 11 from moving during the transmission rotation process, making the transmission more stable and convenient for installation and disassembly.

[0030] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A model car transmission gear shaft anti-drop structure, characterized in that: include: A gear shaft assembly, the gear shaft assembly comprising a shaft rod (1) and a transmission gear (3), the transmission gear (3) being fixedly arranged at one end of the shaft rod (1); A cup receiving assembly, the cup receiving assembly comprising a connecting block (4), one end of the connecting block (4) being fixedly connected to a shaft sleeve (5), and one end of the shaft rod (1) being movably sleeved to the shaft sleeve (5); A limit assembly is arranged at the sleeve joint of the shaft rod (1) and the shaft sleeve (5).

2. A model car transmission gear shaft anti-drop structure according to claim 1, characterized in that: The limiting assembly comprises a limiting sleeve (8), a limiting clamping rod (10), and a limiting bolt (11); the limiting sleeve (8) is movably sleeved on the outer wall of the shaft sleeve (5); the limiting clamping rod (10) movably passes through the shaft rod (1) and the second through hole (7); and the limiting bolt (11) is threadedly connected between the shaft sleeve (5) and the limiting sleeve (8).

3. A model car transmission gear shaft anti-drop structure according to claim 2, characterized in that: A first through hole (2) is formed at one end of the shaft rod (1), and a second through hole (7) is formed on the outer wall of the shaft sleeve (5); the shaft sleeve (5) is rotated so that the limit clamping rod (10) can move through the first through hole (2) and the second through hole (7).

4. A model car transmission gear shaft anti-drop structure according to claim 3, characterized in that: The outer wall of the shaft sleeve (5) is symmetrically provided with two threaded holes (6), and the threaded holes (6) and the second through hole (7) are communicated with the inner cavity of the shaft sleeve (5). The outer wall of the limiting sleeve (8) is provided with upper and lower third through holes (9). The sleeve (8) is rotated so that the threaded holes (6) and the third through hole (9) are concentrically arranged. The limiting bolt (11) passes through the third through hole (9) and is threadedly connected with the threaded hole (6) to prevent the clamping rod (10) from loosening or detaching.

5. A model car transmission gear shaft anti-drop structure according to claim 4, characterized in that: The threaded hole (6) and the third through hole (9) are arranged symmetrically to each other.

Images