Clamp spring supporting structure for improving synchronism of torque angle sensor

Abstract

The utility model discloses a clamp spring supporting structure for improving the synchronism of a torque angle sensor, relates to the field of torque sensors, and solves the problems that after a rotor ring in an existing torque sensor is used for a long time, the material of part of key parts and the function and stability of structural mechanics are reduced to some extent; according to the technical scheme, the sensor comprises an external mounting ring and a rotor ring arranged on the inner side of the external mounting ring in a sleeving mode; a main body of the rotor ring is an annular ring with an inner groove formed in the outer wall, a clamping groove is formed in the rotor ring, a clamping spring is clamped in the clamping groove, and a rib located on the outer side of the clamping spring is clamped in the rotor ring; according to the clamp spring supporting structure for improving the synchronism of the torque angle sensor, through the arrangement of the rotor ring and the clamp spring on the inner side of the rotor ring, the clamp spring can be used for supporting the rotor ring on the outer side from the inner side, the torque sensor is improved, and the precision and the performance of the torque angle sensor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of torque sensors, in particular to a clip spring support structure that improves the synchronization of a torque angle sensor. Background Art

[0002] Torque angle sensor, which integrates the torque sensor and angle sensor together to measure the angle of the vehicle steering wheel and the torque it receives;

[0003] After searching, the application with patent number CN202022041053.1 discloses a torque angle sensor, which is installed on the steering column and is used to detect the steering torque and angle of the vehicle steering wheel. The torque angle sensor includes a torque sensing unit, an angle sensing unit and a PCB board. The torque sensing unit includes a signal input rotor and a signal output rotor. The angle sensing unit includes an intermediate gear and a sensing gear, wherein the intermediate gear is meshed with the sensing gear, and the sensing gear is provided with a first sensing body and a second sensing body;

[0004] The above application documents achieve efficient detection by setting up corresponding sensing units. In reality, the performance stability of the torque angle sensor's synchronization needs to be improved. When the torque angle sensor is used in the later stage of its design life, as the product's working time is extended and it encounters harsh working conditions, the material and structural mechanics functions and stability of some key parts of the sensor will decline, which will ultimately lead to a decline in the sensor's synchronization performance and stability.

[0005] Therefore, we propose a spring support structure to improve the synchronization of the torque angle sensor. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a spring support structure for improving the synchronization of a torque angle sensor, thereby solving the problem that the material and structural mechanics functions and stability of some key parts of the rotor ring in the existing torque sensor decline after long-term use, ultimately leading to a decline in the synchronization performance and stability of the sensor.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a retaining spring support structure for improving the synchronization of a torque angle sensor, comprising an external mounting ring arranged in the torque sensor, and a rotor ring is sleeved on the inner side of the external mounting ring;

[0008] The main body of the rotor ring is an annular ring with an inner groove on the outer wall. A clamping groove is provided in the rotor ring, a clamping spring is clamped in the clamping groove, and a rib located outside the clamping spring is clamped in the rotor ring.

[0009] Preferably, four groups of external clamping blocks in opposite positions are arranged on the outer wall of the rotor ring, and the outer edges of the external clamping blocks are arranged on the outer side of the external mounting ring;

[0010] Preferably, a positioning block protruding inward is fixedly mounted on the inner side wall of the external clamping block, and a rib groove matching the specifications of the positioning block is opened on the outer wall of the rib;

[0011] Among them, the setting of the external clamping block can clamp it in the external mounting ring from both sides to ensure the assembly stability of the rotor ring, and the ribs are zero-gap clamped, thereby ensuring that the rotor ring is evenly stressed and meets the concentricity requirements.

[0012] Preferably, a hollow groove located inside the retaining spring is fixedly installed in the side wall of the rotor ring, and a rib located inside the retaining groove is clamped on the outer side of the retaining spring and the hollow groove;

[0013] Among them, the setting of the hollow groove can limit the retaining spring inside the slot from the outside to prevent it from falling off.

[0014] Preferably, the rotor ring is made of PBT plastic material, and the retaining spring is made of reinforced austenitic stainless steel wire and SUS304 material.

[0015] Preferably, the outer diameter D of the retaining spring before installation is Φ32.5±0.15 mm, and the outer diameter D1 of the retaining spring after installation is Φ31.4±0.15 mm;

[0016] Among them, the retaining spring can only play the role of supporting the rotor ring outwards when it is squeezed by the external force inwards after being assembled with the rotor ring. Therefore, the outer diameter of the rotor ring before installation should be larger than that after installation. The difference between the two will affect the complexity of installing the rotor ring and the concentricity of the rotor assembly. The outer diameter before installation is D, and the outer diameter after installation is D1, and the difference between them is D2 = D-D1;

[0017] If the difference D2 is too small, the installation difficulty of the circlip is small, but the support force on the rotor ring is weak and there is a risk of the circlip falling off. The concentricity tolerance of the rotor ring is also large, and the support function of the circlip cannot be exerted;

[0018] If the difference D2 is too large, the retaining spring has a strong support force on the rotor ring, but it is difficult to install. The excessive support force will cause a large outward deformation of the rotor ring. Once the deformation exceeds the clearance design value, which refers to the clearance between the rotor ring and the outer shell, the friction between the parts of the rotor ring will be large when the rotor ring rotates, and the parts will be worn, thus affecting the performance and service life of the sensor.

[0019] Therefore, through repeated verification, the reasonable range of the difference D2 of the outer diameter of the retaining spring was summarized. After multiple rounds of tests, it was verified that the outer diameter of the retaining spring was controlled as follows: the outer diameter of the retaining spring D = Φ32.5±0.15mm, D1 = Φ31.4±0.15mm, which meets the requirements of the concentricity and assembly of the rotor ring.

[0020] The utility model provides a spring support structure for improving the synchronization of a torque angle sensor. It has the following beneficial effects:

[0021] The retaining spring support structure for improving the synchronization of the torque angle sensor can utilize the retaining spring to support the outer rotor ring from the inside through the arrangement of the rotor ring and the retaining spring inside the rotor ring, thereby improving the torque sensor so that it has a more stable and reliable matching structure, improving the accuracy and performance of the torque angle sensor, and solving the problem that the function and stability of the material and structural mechanics of some key parts of the rotor ring in the existing torque sensor are reduced after long-term use, which ultimately leads to a reduction in the synchronization performance and stability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the rotor ring of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the clamp spring of the utility model;

[0025] Figure 4 For this utility model Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0026] In the figure: 1. rotor ring; 11. external clamping block; 12. groove; 13. positioning block; 2. external mounting ring; 3. retaining spring; 4. clamping groove; 5. rib. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] See also Figure 1-4The embodiment of the utility model provides a technical solution: a spring support structure for improving the synchronization of a torque angle sensor, comprising an external mounting ring 2 arranged in the torque sensor, and a rotor ring 1 is sleeved on the inner side of the external mounting ring 2; the main body of the rotor ring 1 is an annular ring with an inner groove on the outer wall, a slot 4 is opened in the rotor ring 1, a spring 3 is clamped in the slot 4, and a rib 5 located on the outer side of the spring 3 is clamped in the rotor ring 1;

[0029] Among them, the spring support structure for improving the synchronization of the torque angle sensor, through the arrangement of the rotor ring 1 and the inner spring 3 thereof, can use the spring 3 to support the outer rotor ring 1 from the inside, thereby improving the torque sensor so that it has a more stable and reliable matching structure, improving the accuracy and performance of the torque angle sensor, and solving the problem that the material and structural mechanics functions and stability of some key parts of the rotor ring 1 in the existing torque sensor are reduced after long-term use, which ultimately leads to a reduction in the synchronization performance and stability of the sensor.

[0030] Embodiment 2:

[0031] Four groups of external clamping blocks 11 are arranged on the outer wall of the rotor ring 1, and the outer edges of the external clamping blocks 11 are arranged on the outer side of the external mounting ring 2; a positioning block 13 protruding inward is fixedly installed on the inner wall of the external clamping block 11, and a rib groove matching the specification of the positioning block 13 is opened on the outer wall of the rib 5; wherein, the setting of the external clamping block 11 can clamp it in the external mounting ring 2 from both sides to ensure the assembly stability of the rotor ring 1, and the rib 5 is zero-gap clamping, thereby ensuring that the rotor ring 1 is evenly stressed and meets the concentricity requirements.

[0032] A hollow groove 12 located on the inner side of the retaining spring 3 is fixedly installed in the side wall of the rotor ring 1, and a rib 5 located on the inner side of the retaining groove 4 is clamped on the outer side of the retaining spring 3 and the hollow groove 12; wherein, the setting of the hollow groove 12 can limit the retaining spring 3 on the inner side of the retaining groove 4 from the outside to prevent it from falling off.

[0033] The rotor ring 1 is made of PBT plastic material, and the retaining spring 3 is made of reinforced austenitic stainless steel wire and SUS304 material.

[0034] The outer diameter D of the retaining ring 3 before installation is Φ32.5±0.15 mm, and the outer diameter D1 of the retaining ring 3 after installation is Φ31.4±0.15 mm;

[0035] Among them, the retaining spring 3 can only play the role of supporting the rotor ring 1 outwards when it is squeezed by the external force inwards after being assembled with the rotor ring 1. Therefore, the outer diameter of the rotor ring 1 before installation should be larger than that after installation. The difference between the two will affect the complexity of installing the rotor ring 1 and the concentricity of the rotor assembly. The outer diameter before installation is D, and the outer diameter after installation is D1, and the difference between them is D2=D-D1;

[0036] If the difference D2 is too small, the installation difficulty of the retaining spring 3 is small, but the supporting force on the rotor ring 1 is weak and there is a risk of the retaining spring 3 falling off, and the concentricity tolerance of the rotor ring 1 is also large, then the supporting function of the retaining spring 3 cannot be exerted;

[0037] If the difference D2 is too large, the support force of the retaining spring 3 on the rotor ring 1 is strong, but the installation is difficult, and the excessive support force will cause a large outward deformation of the rotor ring 1. Once the deformation exceeds the clearance design value, which refers to the clearance between the rotor ring 1 and the outer shell, the friction between the parts of the rotor ring 1 will be large when the rotor ring 1 rotates, and the parts will be worn, thereby affecting the performance and service life of the sensor;

[0038] Therefore, through repeated verification, a reasonable range of the difference D2 of the outer diameter of the retaining spring 3 was summarized. After multiple rounds of tests, it was verified that the outer diameter of the retaining spring 3 was controlled as follows: the outer diameter of the retaining spring 3 D=Φ32.5±0.15mm, D1=Φ31.4±0.15mm, which meets the concentricity and assembly requirements of the rotor ring 1.

[0039] The working principle and use process of the utility model are as follows: when the device is needed to work, the retaining spring 3 is clamped in the clamping groove 4 on the outer wall of the rotor ring 1, and then with the setting of the positioning block 13 on the external clamping block 11, the rib 5 can be synchronously clamped on the outside of the retaining spring 3 inside the clamping groove 4 to achieve stable clamping, and the retaining spring 3 is used to support the rotor ring 1 from the inside, thereby increasing the overall performance of the rotor ring 1 after long-term use.

[0040] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A retaining spring support structure for improving the synchronization of a torque angle sensor, comprising an external mounting ring (2) arranged in the torque sensor, and a rotor ring (1) is sleeved on the inner side of the external mounting ring (2); Features: The main body of the rotor ring (1) is an annular ring with an inner groove on the outer wall, a retaining groove (4) is provided in the rotor ring (1), a retaining spring (3) is clamped in the retaining groove (4), and a rib (5) located outside the retaining spring (3) is clamped in the rotor ring (1).

2. A spring support structure for improving the synchronization of a torque angle sensor according to claim 1, characterized in that: Four groups of external clamping blocks (11) are arranged on the outer wall of the rotor ring (1) in opposite positions, and the outer edges of the external clamping blocks (11) are arranged on the outside of the external mounting ring (2).

3. A spring support structure for improving the synchronization of a torque angle sensor according to claim 2, characterized in that: A positioning block (13) protruding inward is fixedly mounted on the inner side wall of the external clamping block (11), and a rib groove matching the specifications of the positioning block (13) is formed on the outer wall of the rib (5).

4. A spring support structure for improving the synchronization of a torque angle sensor according to claim 1, characterized in that: A hollow groove (12) located inside the retaining spring (3) is fixedly installed in the side wall of the rotor ring (1), and a rib (5) located inside the retaining groove (4) is clamped and installed outside the retaining spring (3) and the hollow groove (12).

5. The retaining spring support structure for improving the synchronization of a torque angle sensor according to claim 1, characterized in that: The rotor ring (1) is made of PBT plastic material, and the retaining spring (3) is made of reinforced austenitic stainless steel wire and SUS304 material.

6. A spring support structure for improving the synchronization of a torque angle sensor according to claim 1, characterized in that: The outer diameter D of the retaining spring (3) before installation is Φ32.5±0.5 mm, and the outer diameter D1 of the retaining spring (3) after installation is Φ31.4±0.15 mm.

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