Clock spring driving structure

Abstract

The utility model relates to a clock spring drive structure, including clock spring, angle sensor device and integrated control system, the clock spring includes central rotating sleeve and upper casing, central rotating sleeve is sleeved on the upper casing, angle sensor includes bull gear, pinion and rotor, bull gear is engaged with rotor, and the pinion is engaged with the rotor. The pinion is meshed with the rotor, the rotor and the central rotating sleeve rotate synchronously, accommodating grooves are formed in the positions, corresponding to the bull gear and the pinion, of the upper shell, the bull gear and the pinion are installed in the corresponding accommodating grooves, notches are formed in the outer sides of the two accommodating grooves, elastic pieces are arranged in the notches, and the bull gear and the pinion are meshed with the central rotating sleeve under the action of the elastic pieces. And the rotor is always engaged. By adopting the technical scheme, the clock spring driving structure provided by the utility model is additionally provided with the elastic sheet, so that the gear and the rotor are always kept meshed, the gear and the rotor can be kept stable even in a bumpy environment, and signal acquisition is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a clock spring driving structure. Background Art

[0002] In order to reduce the space occupied by the angle sensor for the car steering wheel and reduce the problem of angle sensor parts and assembly complexity.

[0003] There is a Chinese utility model patent with authorization announcement number CN213384442U, which discloses an integrated angle sensor, including a clock spring, an angle sensor device and an integrated control system. The clock spring includes a plunger, a rotating cover, a fixed cover, a soft ring, a flat wire, a center rotating sleeve, an upper shell, and a stopper. The rotating cover is provided with a column, the plunger sleeve is arranged on the column, the rotating cover is installed on the fixed cover, the rotating cover is connected to the center rotating sleeve, the center rotating sleeve is arranged on the upper shell, the fixed cover is connected to the upper shell, the lower end of the center rotating sleeve is connected to the stopper, the soft ring and the flat wire are placed in the space between the center rotating sleeve and the upper shell, the angle sensor includes a large gear, a small gear, a rotor, and a lower shell. The large gear is meshed with the rotor, the small gear is meshed with the rotor, the center rotating sleeve of the clock spring is connected to the rotor, the large gear and the small gear are installed on the groove of the integrated control system, the rotor and the integrated control system are both installed on the lower shell, and the lower shell is connected to the upper shell.

[0004] In actual use, especially in a bumpy environment, the above-mentioned angle sensor is prone to cause the gear and the rotor to disengage and fail to always maintain meshing, thus affecting the collected signal. Summary of the invention

[0005] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a clock spring drive structure, which adds an elastic sheet so that the gear and the rotor always keep meshing, and can remain stable even in a bumpy environment without affecting signal collection.

[0006] The technical solution of the utility model is as follows: a clock spring driving structure comprises a clock spring, an angle sensor device and an integrated control system, wherein the clock spring comprises a central rotating sleeve and an upper shell, wherein the central rotating sleeve is sleeved on the upper shell, wherein the angle sensor comprises a large gear, a small gear and a rotor, wherein the large gear meshes with the rotor, wherein the small gear meshes with the rotor, and wherein the rotor rotates synchronously with the central rotating sleeve, wherein accommodating grooves are arranged on the upper shell at positions corresponding to the large gear and the small gear, wherein the large gear and the small gear are installed in corresponding accommodating grooves, wherein notches are arranged on the outer sides of the two accommodating grooves, wherein elastic sheets are arranged in the notches, and wherein the large gear and the small gear are always meshed with the rotor under the action of the elastic sheets.

[0007] By adopting the above technical solution, the large gear and the small gear always maintain fitting movement with the rotor, and there is no gap between the gear and the rotor, thereby ensuring the stability of the collected signal and avoiding affecting the signal collection in a bumpy environment.

[0008] The utility model is further configured as follows: the central rotating sleeve comprises a sleeve and a rotating body which are separately configured; the rotating body is configured inside the sleeve and connected to the sleeve; the rotor is located below the sleeve and is configured integrally with the rotating body.

[0009] By adopting the above further arrangement, the number of parts is reduced, the cost is reduced, and the rotation performance is not required.

[0010] The utility model is further configured as follows: the clock spring also includes a plunger, a rotating cover and a fixed cover, the rotating cover is provided with a column, the plunger sleeve is arranged on the column, the rotating cover is located on the inner side of the fixed cover, the rotating cover is connected to the center rotating sleeve, and the fixed cover is connected to the upper shell.

[0011] With the above further configuration, the plunger is connected to the car steering wheel, and the rotation of the steering wheel is transmitted to the rotating cover through the plunger, and then to the center rotating sleeve, thereby driving the rotor to rotate, driving the large gear and the small gear to rotate, and the integrated control system receives the rotation information of the large gear and the small gear, and converts it into the angle information of the steering wheel.

[0012] The utility model is further configured as follows: a connecting column is provided at the lower end of the sleeve, a stopper is provided on the inner side of the sleeve, a connecting hole and a through groove are correspondingly provided on the swivel, a limiting plate inclined outward is provided in the through groove, and when the swivel is connected to the sleeve, the connecting column is inserted into the connecting hole, the stopper is located in the through groove, and is configured to conflict with the limiting plate.

[0013] By adopting the above-mentioned further arrangement, the connection structure is simple and easy to install. When the sleeve rotates, the swivel can be driven to rotate synchronously, and the swivel can be axially limited.

[0014] The utility model is further configured as follows: a mounting cavity is provided in the middle of the large gear and the small gear, magnets are provided in the two mounting cavities, and the large gear and the small gear are injection molded on the corresponding magnets.

[0015] By further adopting the above-mentioned arrangement, the gears are injection molded on the magnets, which not only reduces the assembly process and saves costs, but also effectively solves the problem of gear accuracy in the traditional assembly structure, and also solves the problem of magnet falling off and missing assembly in the traditional assembly structure. The structure is stable and reliable, and its service life can be effectively improved under different environments.

[0016] The utility model is further configured as follows: at least one end of the installation cavity is open, and positions on the two gears corresponding to the opening ends of the installation cavity are provided with limiting convex edges extending toward the inner circumference, and the limiting convex edges are injection-molded on the end faces corresponding to the magnets for axially limiting the magnets.

[0017] The above-mentioned further configuration is not only convenient for processing, but also can effectively prevent the magnet from falling off, thereby more effectively ensuring the stability of the magnet and avoiding signal abnormality.

[0018] The utility model is further configured that the installation cavity is open at both ends, and a plurality of anti-loosening protrusions are axially arranged on the limiting convex edge of at least one open end of the installation cavity, and a plurality of anti-loosening concave portions matching with the anti-loosening protrusions are correspondingly arranged on the magnet.

[0019] With the above further configuration, the anti-loosening concave portion on the magnet and the anti-loosening convex portion on the gear are injection-molded and engaged with each other, so that the gear assembly structure prevents the magnet from rotating loose in a harsh environment, so that the functional signal output is effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model;

[0021] Figure 2 This is a real picture of a specific embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the upper shell of a specific embodiment of the utility model;

[0023] Figure 4 for Figure 3 A magnified view of part A;

[0024] Figure 5 It is a schematic diagram of a rotor and a rotating body of a specific embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of a sleeve of a specific embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the installation of a large gear and a magnet in a specific embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of a large gear of a specific embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of a magnet according to a specific embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of a rotating cover according to a specific embodiment of the utility model;

[0030] Fig.11 It is a schematic diagram of a sleeve of a specific embodiment of the utility model;

[0031] Fig.12 This is a schematic diagram of the installation of an angle sensor device according to a specific embodiment of the utility model;

[0032] Fig.13 It is a schematic diagram of the central rotating sleeve in a specific embodiment of the utility model.

[0033] 1. Clock spring; 11. Center sleeve; 111. Sleeve; 1111. Connecting column; 1112. Stopper; 112. Rotating body; 1121. Connecting hole; 1122. Through slot; 1123. Limiting plate; 12. Upper shell; 121. Accommodating groove; 122. Notch; 123. Elastic sheet; 13. Plunger; 14. Rotating cover; 141. Column; 15. Fixed cover; 2. Angle sensor device; 21. Big gear; 211. Mounting cavity; 2111. Anti-loosening protrusion; 22. Small gear; 23. Rotor; 3. Integrated control system; 4. Magnet; 41. Anti-loosening concave portion; 5. Limiting convex edge. DETAILED DESCRIPTION

[0034] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0035] It should be noted that in the description of the present utility model, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0037] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that technical personnel in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] like Figure 1-13As shown, a clock spring driving structure includes a clock spring 1, an angle sensor device 2 and an integrated control system 3. The clock spring 1 includes a central rotating sleeve 11 and an upper shell 12. The central rotating sleeve 11 is sleeved on the upper shell 12. The angle sensor includes a large gear 21, a small gear 22 and a rotor 23. The large gear 21 is meshed with the rotor 23, and the small gear 22 is meshed with the rotor 23. The rotor 23 rotates synchronously with the central rotating sleeve 11. The upper shell 12 is provided with a receiving groove 121 corresponding to the large gear 21 and the small gear 22. 1 and the pinion 22 are installed in the corresponding accommodating groove 121. The outer sides of the two accommodating grooves 121 are both provided with a notch 122. The outer side refers to the side of the large gear 21 and the small gear 22 away from the rotor 23. The notch 122 is provided with an elastic sheet 123. Under the action of the elastic sheet 123, the large gear 21 and the small gear 22 are always meshed with the rotor 23, so that the large gear 21 and the small gear 22 always maintain a fitting movement with the rotor 23. There is no gap between the gears and the rotor 23, ensuring the stability of the collected signal and avoiding the influence of the signal collection in a bumpy environment. The large gear 21 and the small gear 22 are both made of POM material. The integrated control system 3 is the same as the prior art, so it will not be described in detail. It also includes a lower shell connected to the upper shell 12, which is not shown in the figure.

[0039] The central rotating sleeve 11 includes a sleeve 111 and a rotating body 112 which are separately arranged. The rotating body 112 is arranged on the inner side of the sleeve 111 and connected to the sleeve 111. The rotor 23 is located below the sleeve 111 and is integrally arranged with the rotating body 112, thereby reducing the number of parts and reducing costs, and does not require rotation performance. A connecting column 1111 is provided at the lower end of the sleeve 111, and a stopper 1112 is provided on the inner side of the sleeve 111. A connecting hole 1121 and a through slot 1122 are correspondingly provided on the swivel 112. A limiting piece 1123 inclined outward is provided in the through slot 1122. When the swivel 112 is connected to the sleeve 111, the connecting column 1111 is inserted into the connecting hole 1121, the gear position is located in the through slot 1122, and is arranged in conflict with the limiting piece 1123. The connection structure is simple and easy to install. When the sleeve 111 rotates, the swivel 112 can be driven to rotate synchronously, and the swivel 112 can be axially limited.

[0040] The clock spring 1 also includes a plunger 13, a rotating cover 14 and a fixed cover 15. The rotating cover 14 is provided with a column 141, and the plunger 13 is sleeved on the column 141. The rotating cover 14 is located on the inner side of the fixed cover 15, and the rotating cover 14 is connected to the central rotating sleeve 11. The rotating cover 14 is connected to the central rotating sleeve 11 by a buckle connection. The fixed cover 15 is connected to the upper shell 12. The fixed cover 15 can be connected to the upper shell 12 by screws or by a buckle connection. The plunger 13 is connected to the steering wheel of the car. The rotation of the steering wheel is transmitted to the rotating cover 14 through the plunger 13, and then transmitted to the central rotating sleeve 11, thereby driving the rotor 23 to rotate, driving the large gear 21 and the small gear 22 to rotate, and the integrated control system 3 receives the rotation information of the large gear 21 and the small gear 22, and converts it into angle information of the steering wheel.

[0041] The middle parts of the large gear 21 and the small gear 22 are both provided with mounting cavities 211, and magnets 4 are arranged in the two mounting cavities 211, and the large gear 21 and the small gear 22 are injection molded on the corresponding magnets 4. The gears are injection molded on the magnets 4, which not only reduces the assembly process and saves costs, but also effectively solves the problem of gear accuracy in the traditional assembly structure, and also solves the problem of magnet 4 falling off and missing assembly in the traditional assembly structure. The structure is stable and reliable, and the service life can be effectively improved under different environments.

[0042] At least one end of the mounting cavity 211 is open, and the positions corresponding to the open ends of the mounting cavity 211 on the two gears are provided with limiting convex edges 5 extending toward the inner circumference. The limiting convex edges 5 are injection-molded on the end faces corresponding to the magnets 4 to limit the axial position of the magnets 4, which is not only convenient for processing but also can effectively prevent the magnets 4 from falling off, thereby more effectively ensuring the stability of the magnets 4 and avoiding signal abnormalities.

[0043] The mounting cavity 211 is open at both ends, and a plurality of anti-loosening protrusions 2111 are axially arranged on the limiting convex edge 5 of at least one open end of the mounting cavity 211, and a plurality of anti-loosening recesses 41 matching with the anti-loosening protrusions 2111 are correspondingly arranged on the magnet 4. The anti-loosening recesses 41 on the magnet 4 are injection-molded with the anti-loosening protrusions 2111 on the gear, so that the gear assembly structure can prevent the magnet 4 from rotating and loosening in harsh environments, so that the functional signal output is effectively controlled.

Claims

1. A clock spring driving structure, comprising a clock spring (1), an angle sensor device (2) and an integrated control system (3), wherein the clock spring (1) comprises a central rotating sleeve (11) and an upper shell (12), the central rotating sleeve (11) being sleeved on the upper shell (12), the angle sensor comprising a large gear (21), a small gear (22) and a rotor (23), the large gear (21) being meshed with the rotor (23), the small gear (22) being meshed with the rotor (23), and the rotor (23) being rotated synchronously with the central rotating sleeve (11), characterized in that: The upper housing (12) is provided with accommodating grooves (121) at positions corresponding to the large gear (21) and the small gear (22); the large gear (21) and the small gear (22) are installed in the corresponding accommodating grooves (121); the outer sides of the two accommodating grooves (121) are provided with notches (122); an elastic sheet (123) is provided in the notch (122); and the large gear (21) and the small gear (22) are always meshed with the rotor (23) under the action of the elastic sheet (123).

2. The clock spring driving structure according to claim 1, characterized in that: The central rotating sleeve (11) comprises a sleeve (111) and a rotating body (112) which are separately arranged. The rotating body (112) is arranged inside the sleeve (111) and connected to the sleeve (111). The rotor (23) is located below the sleeve (111) and is arranged integrally with the rotating body (112).

3. The clock spring driving structure according to claim 1 or 2, characterized in that: The clock spring (1) further comprises a plunger (13), a rotating cover (14) and a fixed cover (15); the rotating cover (14) is provided with a column (141), the plunger (13) is sleeved on the column (141), the rotating cover (14) is located on the inner side of the fixed cover (15), the rotating cover (14) is connected to the central rotating sleeve (11), and the fixed cover (15) is connected to the upper shell (12).

4. The clock spring driving structure according to claim 2, characterized in that: A connecting column (1111) is provided at the lower end of the sleeve (111), a stopper (1112) is provided on the inner side of the sleeve (111), a connecting hole (1121) and a through slot (1122) are correspondingly provided on the swivel (112), a limiting plate (1123) inclined outwardly is provided in the through slot (1122), and when the swivel (112) is connected to the sleeve (111), the connecting column (1111) is inserted into the connecting hole (1121), the stopper is located in the through slot (1122), and is arranged to abut against the limiting plate (1123).

5. The clock spring driving structure according to claim 1, 2 or 4, characterized in that: The middle parts of the large gear (21) and the small gear (22) are both provided with mounting cavities (211), magnets (4) are provided in the two mounting cavities (211), and the large gear (21) and the small gear (22) are injection-molded on the corresponding magnets (4).

6. The clock spring driving structure according to claim 5, characterized in that: At least one end of the installation cavity (211) is open, and positions on the two gears corresponding to the open ends of the installation cavity (211) are provided with limiting convex edges (5) extending toward the inner circumference. The limiting convex edges (5) are injection-molded on the end faces corresponding to the magnets (4) for axially limiting the magnets (4).

7. The clock spring driving structure according to claim 6, characterized in that: The installation cavity (211) is open at both ends, and a plurality of anti-loosening protrusions (2111) are axially arranged on a limiting convex edge (5) at at least one open end of the installation cavity (211), and a plurality of anti-loosening recesses (41) matching the anti-loosening protrusions (2111) are correspondingly arranged on the magnet (4).

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