Model vehicle axle transmission shaft structure and model vehicle axle

Abstract

The utility model belongs to the technical field of model cars, and discloses a model car axle transmission shaft structure which comprises a driving shaft, a driven shaft and a middle shaft arranged between the driving shaft and the driven shaft, middle U-shaped grooves are formed in the two ends of the middle shaft, and movable balls are arranged at one end of the driving shaft and one end of the driven shaft. The two movable balls are rotationally connected into the two middle U-shaped grooves correspondingly. According to the utility model, an existing single cross shaft type universal joint structure formed by directly and rotatably connecting and combining the driving shaft and the driven shaft is changed into a double-shaft linkage structure in which the intermediate shaft is additionally arranged between the driving shaft and the driven shaft, so that both the driving shaft and the driven shaft can rotate relative to the intermediate shaft; the driving shaft and the driven shaft are connected through the movable ball, so that the relative rotation angle between the driving shaft and the driven shaft is larger, meanwhile, the flexibility of the driving shaft and the driven shaft is better through the movable ball, the problem of torsional vibration generated by transmission parts connected with the driving shaft and the driven shaft can be effectively solved, and the service life of the parts is better guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of model car technology, specifically relating to a model car axle drive shaft structure and a model car axle. Background Technology

[0002] Model cars are a type of toy car used in games to give players the feeling of driving a real car. To enable maneuvers such as turning, model cars typically use a single cross-shaped universal joint structure for the drive shaft connecting the two wheels. However, this single cross-shaped universal joint structure has the following problems in use:

[0003] 1. When the driving fork plane is in a vertical position and the cross shaft plane is perpendicular to the driving shaft axis, the driven shaft speed will be greater than the driving shaft speed.

[0004] 2. When the driving fork plane is in a horizontal position and the cross shaft plane is perpendicular to the driven shaft axis, the driven shaft speed will be less than the driving shaft speed.

[0005] In summary, the existing single cross-shaft universal joint structure operates under conditions where there is an angle between the driving shaft and the driven shaft. The angular velocities of the two shafts are not equal, which causes the transmission components connected to it to experience torsional vibration due to the relatively small rotation angle, thereby affecting the service life of these components. Utility Model Content

[0006] The purpose of this invention is to provide a model car axle drive shaft structure and a model car axle, in order to solve the problem of torsional vibration of the connected transmission components caused by the use of a single cross-shaft universal joint structure in the prior art.

[0007] The aforementioned problems exist in [the system].

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A model car axle drive shaft structure includes a drive shaft, a driven shaft, and an intermediate shaft disposed between the drive shaft and the driven shaft. Both ends of the intermediate shaft are provided with a central U-shaped groove. One end of the drive shaft and one end of the driven shaft are provided with a movable ball, and the two movable balls are rotatably connected to the two central U-shaped grooves respectively.

[0010] As a preferred technical solution of this utility model, the movable ball is rotatably connected to the groove walls on both sides of the central U-shaped groove through a first connecting shaft, and the first connecting shaft passes through the movable ball.

[0011] As a preferred technical solution of this utility model, the movable ball is provided with a through hole, and a connecting rod is installed in the through hole. The connecting rod is perpendicularly connected to the first connecting shaft.

[0012] On the other hand, this utility model also provides a model car axle, including the model car axle drive shaft structure described in any of the above claims.

[0013] Beneficial effects: This utility model changes the existing single cross-shaft universal joint structure, which is directly connected to the drive shaft and driven shaft, into a dual-shaft linkage structure by adding an intermediate shaft between the drive shaft and driven shaft. This allows both the drive shaft and driven shaft to rotate relative to the intermediate shaft, resulting in a larger relative rotation angle between the drive shaft and driven shaft. At the same time, the movable ball improves the flexibility of the drive shaft and driven shaft. Therefore, compared with the prior art, it can more effectively improve the problem of torsional vibration of the connected transmission components, thereby better ensuring the service life of these components. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a partial structural schematic diagram of the present invention.

[0017] In the diagram: 1-Driven shaft; 2-Driven shaft; 3-Intermediate shaft; 4-Moving ball; 5-First connecting shaft; 6-Connecting rod. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0019] Example:

[0020] like Figures 1-3As shown, this embodiment provides a model car axle drive shaft structure, including a drive shaft 1, a driven shaft 2, and an intermediate shaft 3 disposed between the drive shaft 1 and the driven shaft 2. Both ends of the intermediate shaft 3 are provided with a central U-shaped groove. One end of the drive shaft 1 and one end of the driven shaft 2 are provided with a movable ball 4. The two movable balls 4 are respectively rotatably connected in the two central U-shaped grooves, so that the drive shaft 1 and the driven shaft 2 can be rotated and adjusted relative to the intermediate shaft 3 at a certain angle, and can maintain the maximum range of motion with the intermediate shaft 3.

[0021] This invention modifies the existing single-cross universal joint structure, which directly connects the drive shaft and driven shaft, by adding an intermediate shaft 3 between the drive shaft 1 and driven shaft 2. This creates a dual-axis linkage structure where both the drive shaft 1 and driven shaft 2 can rotate relative to the intermediate shaft 3. This results in a larger relative rotation angle between the drive shaft 1 and driven shaft 2. At the same time, the movable ball 4 improves the flexibility of the drive shaft 1 and driven shaft 2. Therefore, compared with the prior art, this invention can more effectively improve the problem of torsional vibration in the connected transmission components, thereby better ensuring the service life of these components.

[0022] As a preferred technical solution of this utility model, the movable ball 4 is rotatably connected to the groove walls on both sides of the central U-shaped groove through the first connecting shaft 5. The first connecting shaft 5 passes through the movable ball 4, and the two ends of the first connecting shaft 5 are respectively connected to the groove walls on both sides of the central U-shaped groove to limit the movable ball 4 and ensure the stability of the movable ball 4 when rotating.

[0023] As a preferred technical solution of this utility model, the movable ball 4 is provided with a through hole, and a connecting rod 6 is installed in the through hole. The connecting rod 6 is perpendicularly connected to the first connecting shaft 5, so that the rotational connection between the movable ball 4 and the first connecting shaft 5 is transferred to the connecting rod 6 and the first connecting shaft 5, which facilitates the batch production of parts.

[0024] On the other hand, this utility model also provides a model car axle, including the model car axle drive shaft structure described in any of the above embodiments, so that the axle structure used on the model car can better improve the problem of torsional vibration of the transmission components, thereby ensuring the service life of the model car.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A model car axle drive shaft structure, characterized in that, It includes a drive shaft (1), a driven shaft (2) and an intermediate shaft (3) disposed between the drive shaft (1) and the driven shaft (2). Both ends of the intermediate shaft (3) are provided with a central U-shaped groove. One end of the drive shaft (1) and one end of the driven shaft (2) are provided with a movable ball (4). The two movable balls (4) are rotatably connected in the two central U-shaped grooves respectively.

2. The model car axle drive shaft structure according to claim 1, characterized in that, The movable ball (4) is rotatably connected to the groove walls on both sides of the central U-shaped groove through the first connecting shaft (5), and the first connecting shaft (5) passes through the movable ball (4).

3. The model car axle drive shaft structure according to claim 1, characterized in that, The movable ball (4) has a through hole, and a connecting rod (6) is installed in the through hole. The connecting rod (6) is perpendicularly connected to the first connecting shaft (5).

4. A model car axle, characterized in that, The model vehicle axle drive shaft structure includes any one of claims 1-3.

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