Small gear fixing structure for steering wheel angle sensor and angle sensor

Abstract

The utility model relates to the technical field of automobile auxiliary direction rotation, in particular to a pinion fixing structure for a steering wheel angle sensor and the angle sensor, which comprises a sensor shell, and a steering wheel main shaft and a bull gear accommodating groove are reserved in the sensor shell; a middle gear and a small gear which are used for measuring angles and are adjacently arranged along the steering wheel main shaft and the large gear accommodating groove are embedded in the sensor shell; cylindrical protruding ribs are arranged on one side face of the middle gear and one side face of the small gear. Double-rib limiting grooves matched with the two protruding ribs are formed in the sensor shell. The cylindrical protruding ribs are arranged on one side face of the middle gear and one side face of the small gear, and the double-rib limiting grooves matched with the protruding ribs are formed in the sensor shell, so that the middle gear and the small gear are stably fixed in the sensor shell. According to the design, the problem that the matching position of the shell and the sun gear shakes due to production errors is effectively solved, and the measurement precision and reliability of the steering wheel angle sensor are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile auxiliary direction rotation, concretely to a steering wheel rotation angle sensor middle pinion fixed structure and rotation angle sensor. BACKGROUND

[0002] The steering wheel rotation angle sensor on the market currently is usually composed of a sensor shell, a steering wheel main shaft, a large gear, a middle gear and a small gear. The sensor shell has a reserved accommodating groove for the steering wheel main shaft and the large gear. The large gear is connected with the steering wheel main shaft. The middle gear and the small gear are arranged at proper positions in the sensor shell and measure the rotation angle of the steering wheel through meshing with the large gear.

[0003] Although the existing steering wheel rotation angle sensor can meet the needs of the automobile steering system to some extent, there are still certain technical defects in the actual application. Specifically, due to errors in the production process, the structure at the matching position of the shell and the center gear (including the middle gear and the small gear) is prone to large shaking, which leads to poor functional output of the product. Such shaking not only affects the measurement accuracy of the steering wheel rotation angle sensor, but also may have an adverse effect on the steering control of the automobile, thereby threatening the driving safety.

[0004] Therefore, how to solve the shaking problem at the matching position of the shell and the center gear and improve the reliability and stability of the product has become a technical problem to be solved in the technical field of steering wheel rotation angle sensors. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of middle pinion fixed structure and rotation angle sensor in steering wheel rotation angle sensor to solve the shaking problem at the matching position of the shell and the center gear in the prior art.

[0006] The technical scheme for solving the above technical problems is as follows: a middle pinion fixed structure in a steering wheel rotation angle sensor, comprising a sensor shell, the sensor shell is reserved with a steering wheel main shaft and a large gear accommodating groove;The sensor shell is embedded with a middle gear and a small gear for measuring angle along the steering wheel main shaft and the large gear accommodating groove adjacent arrangement;

[0007] The side of the middle gear and the small gear is provided with a cylindrical protruding rib;The sensor shell is respectively provided with a double-rib limiting groove matched with the two protruding ribs.

[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0009] Further, the double-rib limiting groove is respectively spaced with an outer rib and an inner rib inside and outside.

[0010] Further, the outer rib is higher than the inner rib.

[0011] Further, the two protruding ribs are coaxially arranged with the middle gear and the pinion respectively.

[0012] Further, the protruding ribs are provided with hollow supports.

[0013] Further, the hollow supports are provided with magnets.

[0014] A steering wheel angle sensor, comprising the pinion fixing structure of the steering wheel angle sensor, a steering wheel main shaft of the sensor housing, and a hollow support provided with a magnet.

[0015] Further, the pinion fixing structure of the steering wheel angle sensor and the steering wheel angle sensor have at least the following beneficial effects compared with the prior art:

[0016] By arranging the protruding ribs on one side of the middle gear and the pinion, and arranging the double-rib limiting grooves in the sensor housing, the middle gear and the pinion are stably fixed in the sensor housing. This design effectively solves the shaking problem caused by production errors at the matching position of the housing and the center gear, and significantly improves the measurement accuracy and reliability of the steering wheel angle sensor.

[0017] Meanwhile, the outer rib and the inner rib arranged at intervals in the double-rib limiting grooves, and the design that the outer rib is higher than the inner rib, further enhance the fixing effect, reduce the shaking, and improve the overall stability and durability of the product. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the middle gear and the pinion in the utility model;

[0020] Figure 3 It is a schematic diagram of the sensor housing structure in the utility model;

[0021] Figure 4 It is a sectional view of the sensor housing in the utility model.

[0022] In the drawings, the components represented by each reference numeral are listed as follows:

[0023] 1, sensor housing; 1.1, steering wheel main shaft and gear container groove; 1.2, double-rib limiting groove; 1.3, outer rib; 1.4, inner rib; 2, middle gear; 3, pinion; 4, protruding rib; 5, hollow support; 6, magnet. DETAILED DESCRIPTION

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed structures. Those skilled in the art can understand the specific meaning of these terms in this patent based on the specific circumstances.

[0026] like Figures 1-4 As shown, the pinion fixing structure of the steering wheel angle sensor in this practical design includes a sensor housing 1, in which a steering wheel spindle and a large gear receiving groove 1.1 are reserved; a middle gear 2 and a pinion 3 for measuring angle are embedded in the sensor housing 1 and arranged adjacent to the steering wheel spindle and the large gear receiving groove 1.1.

[0027] Both the middle gear 2 and the small gear 3 have cylindrical protruding ribs 4 on one side; the sensor housing 1 is provided with double rib limiting grooves 1.2 that are adapted to the two protruding ribs 4.

[0028] The sensor housing 1 has a pre-reserved groove 1.1 for accommodating the steering wheel spindle and the large gear. The middle gear 2 and the small gear 3 are embedded in the sensor housing 1 and arranged adjacent to each other for measuring the steering wheel angle. To improve the stability of the fixation, cylindrical protruding ribs 4 are designed on one side of both the middle gear 2 and the small gear 3. The sensor housing 1 is provided with double-rib limiting grooves 1.2 that are adapted to these two protruding ribs 4. Through the cooperation between the protruding ribs 4 and the double-rib limiting grooves 1.2, the middle gear 2 and the small gear 3 are stably fixed in the sensor housing 1, thereby improving the measurement accuracy and reliability of the steering wheel angle sensor.

[0029] In one embodiment, the double-ribbed limiting groove 1.2 is provided with outer ribs 1.3 and inner ribs 1.4 at intervals on the inside and outside of the groove.

[0030] Specifically, the outer rib 1.3 is higher than the inner rib 1.4. This height difference provides more stable support and restraint for the protruding rib 4, further enhancing the fixation effect of the middle gear 2 and the small gear 3 within the sensor housing 1. This design not only improves the measurement accuracy of the steering wheel angle sensor but also effectively reduces the shaking problem caused by manufacturing errors, thereby improving the overall reliability and stability of the product.

[0031] In one embodiment, the two protruding ribs 4 are coaxially distributed with the middle gear 2 and the small gear 3, respectively.

[0032] Specifically, the protruding ribs 4 are provided with hollow supports 5. The inside of the protruding ribs 4 is provided with hollow supports 5. This hollow design not only reduces the overall weight of the sensor, but also helps to dissipate heat and improve the operating efficiency of the sensor. At the same time, the hollow supports 5 provide stable support for the installation of the magnet.

[0033] Specifically, the hollow supports 5 are provided with magnets, which are circular magnets with radial magnetization, providing the necessary signal magnetic field. When the gear rotates, the magnet also rotates, thereby changing the distribution of the magnetic field above the sensor. This change in magnetic field is captured by the angle sensor and converted into an electrical signal, thereby achieving accurate measurement of the rotation angle.

[0034] The utility model also provides a kind of rotation angle sensor, including as described in the steering wheel rotation angle sensor small gear fixed structure, the steering wheel main shaft of the sensor shell 1 and the hollow containing groove 1.1 of big gear are equipped with steering wheel main shaft, the steering wheel main shaft is provided with the big gear meshing with middle gear 2 and small gear 3.

[0035] Specifically, the sensor shell 1 is designed with a steering wheel main shaft and a big gear containing groove 1.1 inside, for installing the steering wheel main shaft. The steering wheel main shaft is fixed with a big gear, which is in meshing relationship with the middle gear 2 and the small gear 3, thereby realizing the transmission and measurement of angle.

[0036] It is worth mentioning that the middle gear 2 and the small gear 3 are provided with a special designed fixed structure, i.e. the side surface of each is provided with a cylindrical protruding rib 4, which is perfectly matched with the double rib limiting groove 1.2 provided in the sensor shell 1. The outer rib 1.3 and the inner rib 1.4 are respectively arranged in the groove of the double rib limiting groove 1.2, forming a stable limiting structure, which further enhances the fixing effect of the middle gear 2 and the small gear 3.

[0037] In addition, the protruding rib 4 is ingeniously designed with a hollow support 5 inside, and a magnet is installed therein. This design not only reduces the overall weight and improves the heat dissipation performance, but also improves the measurement accuracy and stability through the cooperation of the magnet and the angle sensor.

[0038] It should be noted that, in the present text, the terms "comprises", "comprising", "includes", "including" or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise, include, or are including elements do not include only those elements but can also include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses. Unless otherwise defined, the terms "mounting", "connected", "connecting" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0040] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A pinion fixing structure for a steering wheel angle sensor, characterized in that, Including sensor shell (1), the steering wheel main shaft and the big gear containing groove (1.1) are reserved in the sensor shell (1);The sensor shell (1) is embedded along the adjacent steering wheel main shaft and big gear containing groove (1.1) and is provided with the middle gear (2) and pinion (3) for measuring angle; The middle gear (2) and pinion (3) one side are each provided with the cylindrical protruding rib (4);The sensor shell (1) is respectively provided with the double rib limiting groove (1.2) matched with two protruding ribs (4).

2. The steering wheel angle sensor pinion gear fixing structure according to claim 1, characterized in that, The double rib limiting groove (1.2) is respectively arranged with outer rib (1.3) and inner rib (1.4) in the groove.

3. The steering wheel angle sensor pinion gear fixing structure according to claim 2, wherein The outer rib (1.3) is higher than the inner rib (1.4).

4. The steering wheel angle sensor pinion gear fixing structure according to claim 1, wherein Two protruding ribs (4) are respectively coaxially distributed with the middle gear (2) and pinion (3).

5. The steering wheel angle sensor pinion gear fixing structure according to claim 1, wherein The protruding rib (4) is provided with the hollow bracket (5) in.

6. The steering wheel angle sensor pinion gear fixing structure according to claim 5, wherein The hollow bracket (5) is provided with a magnet.

7. A corner sensor, characterized by Including the steering wheel angle sensor middle pinion fixed structure of any one of claims 1-6, the steering wheel main shaft and the big gear containing groove (1.1) of the sensor shell (1) are provided with the steering wheel main shaft, and the big gear is provided on the steering wheel main shaft and is engaged with the middle gear (2) and pinion (3).

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