An anti-rotation structure for a torque angle sensor
By adopting the design of double-sided elastic arms and reinforcement ribs in the anti-rotation structure of the torque angle sensor, the problem of easy failure of the anti-rotation structure in the prior art is solved, and the torque signal quality and structural reliability are improved.
Patent Information
- Application Number
- CN202421473573.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing anti-rotation structure of the torque angle sensor is prone to lose its limit function due to failure of the elastic arm, affecting the torque angle output accuracy.
The double-sided elastic arm structure and reinforcement ribs are adopted to ensure the tight fit between the sensor cover and the fixed groove block, and the non-rotability is achieved through elastic force. When one side of the elastic arm fails, the other side of the elastic arm continues to play a limiting role.
It improves the torque signal quality, enhances the reliability of the anti-rotation structure, and reduces the risk of failure.
Smart Images
Figure CN222704126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of angle sensors, in particular to an anti-rotation structure of a torque angle sensor. Background Art
[0002] The torque angle sensor of the electric power steering system of the car is used to detect the input torque and steering wheel angle. It is a non-contact inductive position sensor. Generally, the rotor is fixed on the steering shaft, and the stator is set in the housing, which is supported in the locomotive part in a non-rotatable manner. In order to prevent the housing from rotating, a limiting structure, that is, an anti-rotation structure, is set.
[0003] Existing anti-rotation structures mostly adopt a double plastic spring arm structure, a single plastic spring arm and a metal spring sheet combination structure, and a single plastic spring arm structure. The torque angle sensor is limited in the installation environment by elastic force. Once the elastic arm fails, the anti-rotation limiting function will be lost, thereby affecting the torque angle output accuracy. Utility Model Content
[0004] The purpose of the utility model is to provide an anti-rotation structure of a torque angle sensor in view of the existing technical defects, so as to solve the problems raised in the above background technology.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an anti-rotation structure of a torque angle sensor, comprising a sensor cover, a fixed slot block and an anti-rotation structure, wherein the fixed slot block cover is arranged at the bottom of the sensor cover, two receiving blocks are arranged on one side of the fixed slot block, and the anti-rotation structure is fixed on one side of the sensor cover and clamped between the two receiving blocks, so as to prevent the sensor cover from rotating relative to the fixed slot block;
[0006] Furthermore, the anti-rotation structure includes a support block, elastic arms are respectively arranged on both sides of the support block, one end of the support block is connected to a limiting block, and a double-sided elastic arm structure is adopted to reduce the risk of failure. Once one side of the elastic arm fails due to fracture, the elastic arm on the other side can continue to play a limiting role with the limiting block at the failed end.
[0007] Furthermore, reinforcing ribs are connected between the support block and the elastic arms on both sides, and the reinforcing ribs can enhance the strength and rigidity of the elastic arms and reduce the risk of failure.
[0008] Furthermore, the upper side of the elastic arm is inclined outward and an outward top block is provided at the upper end.
[0009] Furthermore, top blocks 2 are respectively provided on the upper ends of both sides of the limit block.
[0010] Furthermore, a circular groove for connecting the sensor cover is formed on the fixed groove block.
[0011] Furthermore, the sensor cover includes a shell, the top of the shell is connected to a gear cover, the bottom of the shell is connected to a back cover, and the shell, the gear cover and the back cover are assembled to form a cover structure of the sensor.
[0012] Compared with the prior art, the beneficial effect achieved by the utility model is that the utility model is provided with an anti-rotation structure, and a tight fit between the sensor cover and the fixed slot block is achieved through elastic force, thereby achieving the non-rotatability of the sensor cover and improving the quality of the torque signal. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the anti-rotation structure of the utility model;
[0016] Figure 3 It is a schematic diagram of a fixed slot block of the utility model;
[0017] In the figure: 1. sensor cover; 11. housing; 12. gear cover; 13. back cover; 2. fixed slot block; 21. receiving block; 22. circular slot; 3. anti-rotation structure; 31. support block; 32. elastic arm; 321. top block 1; 33. limit block; 331. top block 2; 4. reinforcing ribs. DETAILED DESCRIPTION
[0018] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-3 The utility model provides a technical solution: an anti-rotation structure of a torque angle sensor, comprising a sensor cover 1, a fixed slot block 2 and an anti-rotation structure 3, wherein the fixed slot block 2 is provided at the bottom of the sensor cover 1, two receiving blocks 21 are provided on one side of the fixed slot block 2, and the anti-rotation structure 3 is fixed on one side of the sensor cover 1 and engaged between the two receiving blocks 21, so as to prevent the sensor cover 1 from rotating relative to the fixed slot block 2;
[0020] The anti-rotation structure 3 includes a support block 31, and elastic arms 32 are respectively arranged on both sides of the support block 31. One end of the support block 31 is connected to a limiting block 33. The double-sided elastic arm 32 structure is adopted to reduce the risk of failure. Once one side of the elastic arm 32 fails due to fracture, the other side of the elastic arm 32 can continue to play a limiting role with the limiting block 33 at the failed end.
[0021] Reinforcing ribs 4 are connected between the support block 31 and the elastic arms 32 on both sides. The reinforcing ribs 4 can enhance the strength and rigidity of the elastic arms 32 and reduce the risk of failure.
[0022] The upper side of the elastic arm 32 is inclined outward and an outward top block 321 is disposed at the upper end.
[0023] A second top block 331 is respectively disposed on the upper ends of both sides of the limiting block 33 .
[0024] The fixing groove block 2 is provided with a circular groove 22 for connecting with the sensor cover 1 .
[0025] In actual operation, when the relative supporting surfaces of the two supporting blocks 21 are larger, the limit block 33 fits with the supporting block 21, ensuring a certain maximum compression amount of the elastic arm 32 structure; when the relative supporting surfaces of the two supporting blocks 21 are smaller, the elastic arm 32 structure is squeezed by the supporting blocks 21 on both sides and fits with the two sides of the support block 31, which also ensures a certain maximum compression amount of the elastic arm 32 structure. Therefore, the limit block 33 and the support block 31 jointly ensure a certain compression amount of the elastic arm 32, that is, correspondingly ensure a certain range of elastic force values, and will not cause breakage due to excessive compression.
[0026] The sensor cover 1 comprises a shell 11 , a gear cover 12 is connected to the top of the shell 11 , a back cover 13 is connected to the bottom of the shell 11 , and the shell 11 , the gear cover 12 , and the back cover 13 are assembled to form a cover structure of the sensor.
[0027] In summary, the utility model is simple to manufacture and assemble, and can achieve a tight fit with the installation environment (a fixed slot block 2) through elastic force, thereby achieving the non-rotatability of the sensor cover and improving the quality of the torque signal.
[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0029] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. An anti-rotation structure of a torque angle sensor, characterized in that: include: Sensor housing (1); A fixed slot block (2) is arranged at the bottom of the sensor cover (1), and two receiving blocks (21) are arranged on one side of the fixed slot block (2); An anti-rotation structure (3) fixed to one side of the sensor cover (1) and engaged between the two receiving blocks (21); The anti-rotation structure (3) comprises a support block (31); Elastic arms (32) are respectively provided on both sides of the support block (31), and one end of the support block (31) is connected to a limiting block (33).
2. The anti-rotation structure of a torque angle sensor according to claim 1, characterized in that: Reinforcing ribs (4) are connected between the support block (31) and the elastic arms (32) on both sides.
3. The anti-rotation structure of a torque angle sensor according to claim 2, characterized in that: The upper side of the elastic arm (32) is inclined outward and an outward-facing top block (321) is provided at the upper end.
4. The anti-rotation structure of a torque angle sensor according to claim 1, characterized in that: A second top block (331) is respectively provided at the upper ends of both sides of the limit block (33).
5. The anti-rotation structure of a torque angle sensor according to claim 1, characterized in that: The fixed groove block (2) is provided with a circular groove (22) for connecting to the sensor cover (1).
6. The anti-rotation structure of a torque angle sensor according to claim 1, characterized in that: The sensor housing (1) comprises a shell (11); A gear cover (12) connected to the top of the housing (11); A rear cover (13) connected to the bottom of the housing (11); The housing (11), the gear cover (12) and the back cover (13) are assembled to form an outer cover structure of the sensor.