Transmission shaft of automobile seat

Abstract

The utility model discloses an automobile seat transmission shaft which comprises a transmission shaft body, and transmission teeth are distributed outside the transmission shaft body in a surrounding mode. The transmission shaft body comprises a fulcrum shaft and a middle shaft body, a pipe sleeve corresponding to the middle shaft body is arranged at one end of the fulcrum shaft, a fixing groove is formed in the middle shaft body, an elastic piece is arranged in the fixing groove, limiting through holes corresponding to the elastic piece are evenly distributed in the pipe sleeve, and the elastic piece penetrates out of the limiting through holes to limit relative movement between the fulcrum shaft and the middle shaft body. The adjustable support is novel in structure, adjustable in length, flexible, convenient and high in adaptability.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission shafts, in particular to a transmission shaft for an automobile seat. Background Art

[0002] The electric seat of a car is adjusted by controlling the motor to adjust the front and rear position, up and down height, and backrest angle of the seat. It is generally composed of a bidirectional motor, a transmission device, and a seat adjuster. When the electric seat is adjusted up and down, the lifting motor drives the lifting device through the transmission shaft to control the lifting of the electric seat.

[0003] The existing transmission shaft has the following defects during use: the length of the transmission shaft cannot be adjusted, resulting in a fixed distance between the lifting motor and the lifting device, which is difficult to adapt to seats of different lengths, otherwise the adjustment is limited. Summary of the invention

[0004] The utility model aims to solve the above technical problems existing in the prior art and provides a car seat transmission shaft with novel structure, adjustable length, flexibility, convenience and strong applicability.

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

[0006] The transmission shaft of the automobile seat comprises: a transmission shaft body, and transmission teeth are distributed around the transmission shaft body; the characteristics are: the transmission shaft body comprises a support shaft and a central axis body, one end of the support shaft is provided with a pipe sleeve corresponding to the central axis body, the central axis body is provided with a fixing groove, an elastic member is provided in the fixing groove, and limiting through holes corresponding to the elastic member are evenly distributed on the pipe sleeve, and the elastic member passes through the limiting through holes to limit the relative movement between the support shaft and the central axis body. The transmission shaft has a novel structure, adjustable length, flexibility and convenience, and strong applicability.

[0007] Furthermore, a convex portion is provided on the central axis, a fixing groove is provided on the convex portion, and a limiting groove corresponding to the convex portion is provided on the inner wall of the sleeve. During the adjustment process, the setting of the convex portion can limit the relative rotation between the central axis and the support shaft, thereby preventing the elastic member from being misaligned with the limiting through hole and affecting the fixed length adjustment of the transmission shaft body.

[0008] Furthermore, the elastic member includes a spring and a limiting column, the limiting column is arranged at one end of the spring, and the other end of the spring is fixed in the fixing groove, with a simple structure, reliable elasticity and low use cost.

[0009] Furthermore, a reinforcement ring is provided outside the central axis body, which improves the external structural strength of the central axis body, is pressure-resistant and collision-resistant, is not easy to deform, and has a long service life.

[0010] Furthermore, a transmission part is provided on the support shaft to play a transmission role and can adapt to the transmission requirements of seats of different lengths.

[0011] Furthermore, the support shaft is provided with a central through hole, which reduces weight and saves manufacturing materials.

[0012] Furthermore, the surface of the transmission shaft body is coated with a wear-resistant layer, and the wear-resistant layer is made of a copper-zinc alloy layer, which improves the wear resistance of the transmission shaft body, is not easy to wear, and has a long service life.

[0013] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0014] The transmission shaft body adopts a split design, which is convenient for separate manufacturing. Compared with the one-piece molding process, the manufacturing requirements are low. The support shaft and the central axis body can be detached and separated, and can be used whenever installed, which is flexible and convenient. During assembly, the limit column is squeezed to make it retreat into the fixed groove. At this time, the spring is compressed, and then the central axis body is inserted into the pipe sleeve. When the limit column meets the limit through hole, the rebound force generated by the spring acts on the limit column, causing the limit column to pass through the limit through hole, thereby limiting the relative movement between the central axis body and the pipe sleeve. The assembly is reliable, replacing the bolt fixing method, which is labor-saving and convenient. The limit column is passed through the limit through hole at different horizontal positions to change the length of the transmission shaft body, thereby adapting to the transmission requirements of seats of different lengths, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the transmission shaft of the automobile seat of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the support shaft in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connection between the central shaft body and the pipe sleeve in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the connection between the central axis and the elastic member in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the support shaft in the utility model.

[0021] In the figure: 1-transmission shaft body; 2-support shaft; 3-central shaft body; 4-pipe sleeve; 5-fixing groove; 6-spring; 7-limiting column; 8-convex part; 9-limiting groove; 10-transmission part; 11-center through hole; 12-reinforcement ring; 13-limiting through hole. DETAILED DESCRIPTION

[0022] like Figures 1 to 5As shown, the utility model is a car seat transmission shaft, comprising: a transmission shaft body 1 with transmission teeth distributed around the outside, the surface of the transmission shaft body 1 is coated with a wear-resistant layer, and the wear-resistant layer is made of a copper-zinc alloy layer, which improves the wear resistance of the transmission shaft body 1, is not easy to wear, and has a long service life.

[0023] The transmission shaft body 1 includes a support shaft 2 and a central axis body 3. One end of the support shaft 2 is provided with a pipe sleeve 4 corresponding to the central axis body 3. The central axis body 3 is provided with a fixing groove 5. An elastic member is provided in the fixing groove 5. The elastic member includes a spring 6 and a limiting column 7. The limiting column 7 is provided at one end of the spring 6, and the other end of the spring 6 is fixed in the fixing groove 5. It has a simple structure, reliable elasticity, and low use cost. Limiting through holes 13 corresponding to the limiting columns 7 are evenly distributed on the pipe sleeve 4.

[0024] The transmission shaft body 1 adopts a split design, which is convenient for separate manufacturing. Compared with the one-piece molding process, the manufacturing requirements are low. The support shaft 2 and the central axis body 3 are detachable and can be used at any time, which is flexible and convenient. During assembly, the limit column 7 is squeezed to make it retreat into the fixed groove 5. At this time, the spring 6 is compressed, and then the central axis body 3 is inserted into the sleeve 4. When the limit column 7 meets the limit through hole 13, the rebound force generated by the spring 6 acts on the limit column 7, so that the limit column 7 passes through the limit through hole 13, thereby limiting the relative movement between the central axis body 3 and the sleeve 4. The assembly is reliable, replacing the bolt fixing method, which is labor-saving and convenient. The limit column 7 is passed through the limit through hole 13 at different horizontal positions to change the length of the transmission shaft body 1, thereby adapting to the transmission requirements of seats of different lengths, and has strong applicability.

[0025] The central shaft body 3 is provided with a convex portion 8, the fixing groove 5 is provided on the convex portion 8, and the inner wall of the pipe sleeve 4 is provided with a limiting groove 9 corresponding to the convex portion 8. During the adjustment process, the setting of the convex portion 8 can limit the relative rotation between the central shaft body 3 and the support shaft 2, thereby preventing the elastic member from being misaligned with the limiting through hole 13 and affecting the fixed length adjustment of the transmission shaft body 1.

[0026] The support shaft 2 is provided with a transmission part 10, the cross-sectional diameter of the transmission part 10 is larger than the cross-sectional diameter of the support shaft 2, and plays a transmission role, which can adapt to the transmission requirements of seats of different lengths. The support shaft 2 is provided with a central through hole 11, which plays a weight reduction role and also saves manufacturing materials.

[0027] A reinforcement ring 12 is disposed outside the central axis body 3, which improves the external structural strength of the central axis body 3, is pressure-resistant and collision-resistant, is not easily deformed, and has a long service life.

[0028] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. Car seat transmission shaft, including: A transmission shaft body, wherein transmission teeth are distributed around the transmission shaft body; Features: The transmission shaft body includes a support shaft and a central axis body, one end of the support shaft is provided with a pipe sleeve corresponding to the central axis body, the central axis body is provided with a fixing groove, an elastic member is provided in the fixing groove, and limiting through holes corresponding to the elastic member are evenly distributed on the pipe sleeve, and the elastic member passes through the limiting through holes to limit the relative movement between the support shaft and the central axis body.

2. The automobile seat transmission shaft according to claim 1, characterized in that: The central axis body is provided with a convex portion, the fixing groove is provided on the convex portion, and the inner wall of the pipe sleeve is provided with a limiting groove corresponding to the convex portion.

3. The automobile seat transmission shaft according to claim 1, characterized in that: The elastic member comprises a spring and a limiting column, wherein the limiting column is arranged at one end of the spring, and the other end of the spring is fixed in the fixing groove.

4. The automobile seat transmission shaft according to claim 1, characterized in that: A reinforcement ring is disposed outside the central axis.

5. The automobile seat transmission shaft according to claim 1, characterized in that: A transmission part is arranged on the support shaft.

6. The automobile seat transmission shaft according to claim 1, characterized in that: The support shaft is provided with a central through hole.

7. The automobile seat transmission shaft according to claim 1, characterized in that: The surface of the transmission shaft body is coated with a wear-resistant layer.

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