CN217320231U

CN217320231U - Car angle sensor location mounting structure

Info

Publication number: CN217320231U
Application number: CN202221092627.0U
Authority: CN
Inventors: 王进丁; 王正中; 胡勇杰; 赵敏
Original assignee: Changhui Auto Electrical System Anhui Co ltd
Current assignee: Changhui Auto Electrical System Anhui Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-30
Anticipated expiration: 2032-05-09

Abstract

The utility model provides a car angle sensor location mounting structure, including last casing, lower casing, set up the master gear between last casing and lower casing, the up end of master gear and down on the terminal surface around the circumference seted up respectively and go up spacing annular, down spacing annular groove, the relative position of last spacing annular groove of last casing be provided with bellied spacing bulge loop of going up, the relative position of lower spacing annular groove of lower casing be provided with bellied lower spacing bulge loop. The utility model provides a traditional angle sensor's gear installation precision receive machining error to influence great to and the not good initiation teeth of a cogwheel meshing of clearance fit idle stroke and contact ratio decline appear, enlarge the problem of product angle error.

Description

Car angle sensor location mounting structure

Technical Field

The utility model relates to a car auxiliary steering system technical field especially relates to a car angle sensor location mounting structure.

Background

The current angle sensor product generally comprises an upper cover, a lower cover, a main gear, a bull gear, a pinion and a circuit board. Magnets are arranged in the large gear and the small gear, Hall sensing chips are correspondingly arranged on the same side of the circuit board, the chips are connected with the processor through circuits in the circuit board, and the gears and the circuit board are fixed in the lower cover through mounting structures. When the steering wheel rotates, the main gear is driven to rotate at equal angles through the matching structures such as the rib grooves. The big gear and the small gear are not in direct contact and synchronously rotate along with the main gear through gear tooth meshing. Because the three gear teeth are different in number, the rotation angles of the large gear and the small gear, namely the rotation angles of the magnetic field of the internal magnet, are different; as long as the initial position of the angle sensor is calibrated, the angle value of the angle sensor can be arbitrarily rotated in the measuring range of the sensor, and the angle value of the angle sensor is necessarily corresponding to the unique difference value. According to the relation, the current steering wheel rotation angle CAN be calculated by reverse algorithm after the magnetic field change is collected by the Hall sensing chip, and an angle signal is sent out through the CAN bus.

Because the relative positions of the main gear, the bull gear and the pinion are completely dependent on the positioning structure of the lower cover shell, the positioning precision is affected by processing errors; meanwhile, to ensure smooth rotation of the gear, clearance fit must be designed, and the clearance will also result in error accumulation. The influence of the angle sensor can cause the gear teeth to be meshed to cause idle stroke and reduction of contact ratio, and the angle error of the product is amplified. Therefore, a novel positioning and mounting structure of the automobile angle sensor needs to be invented, the existing structure is improved, and the requirement of higher precision is met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car angle sensor location mounting structure, the gear installation precision of solving traditional angle sensor receives machining error to influence greatly to and the not good initiation teeth of a cogwheel meshing of clearance fit idle stroke and contact ratio decline appear, the problem of amplifying product angle error.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a car angle sensor location mounting structure, includes casing, lower casing, sets up the master gear at last casing under and between the casing, the up end of master gear and down the terminal surface on seted up respectively around the circumference and go up spacing annular, down spacing annular, the relative position that goes up spacing annular of last casing be provided with bellied spacing bulge loop, the relative position that goes down spacing annular of lower casing be provided with bellied lower spacing bulge loop.

Furthermore, the unilateral clearance between the upper limiting convex ring and the upper limiting ring groove is 0.4 mm.

Furthermore, the unilateral clearance between the lower limit bulge loop and the lower limit loop groove is 0.4 mm.

Furthermore, the lower limiting bulges are provided with a plurality of outwards arched parts at uniform intervals around the circumference.

Furthermore, the clearance between the outer side of the arch part and the groove wall of the lower limiting ring groove is 0.1 mm.

Furthermore, lubricating oil is smeared in the upper limiting ring groove and the lower limiting ring groove.

The utility model has the advantages that: the utility model relates to an automobile angle sensor positioning and mounting structure has high positioning accuracy, and can greatly reduce the angle error of a sensor product; the gear clearance fit is not good and the vibration and bounce caused by the vehicle running condition can be eliminated, and the effect is obvious; simple structure, it is convenient to assemble, can satisfy the production beat completely.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is an appearance diagram of the angle sensor for automobile of the present invention.

Fig. 2 is the utility model relates to an automobile angle sensor's inside structure chart.

Fig. 3 is a sectional view a-a structural diagram of fig. 1.

Fig. 4 is an enlarged view of a portion i of fig. 3.

Fig. 5 is a structural diagram of the upper cover of the present invention.

Fig. 6 is a structural diagram of the middle lower cover of the present invention.

Detailed Description

As shown in fig. 1 to 6, the positioning and mounting structure for the automobile angle sensor comprises an upper shell 1, a lower shell 2, and a main gear 3 arranged between the upper shell 1 and the lower shell 2, wherein an upper limit ring groove 31 and a lower limit ring groove 32 are respectively arranged on the upper end surface and the lower end surface of the main gear 3 around the circumference, a convex upper limit convex ring 11 is arranged at the position of the upper shell 1 relative to the upper limit ring groove 31, and a convex lower limit convex ring 21 is arranged at the position of the lower shell 2 relative to the lower limit ring groove 32.

Preferably, in combination with the above solution, in order to better limit the main gear 3, the one-sided gap between the upper limiting convex ring 11 and the upper limiting ring groove 31 is 0.4 mm.

Preferably, in combination with the above solution, in order to better limit the main gear 3, the one-sided gap between the lower limit protruding ring 21 and the lower limit ring groove 32 is 0.4 mm.

Preferably, in combination with the above solution, in order to reduce the contact surface and prevent the main gear from wobbling, the lower limiting convex ring 21 is provided with a plurality of outwardly arched convex portions 22 at regular intervals around the circumference. Of course, the projecting portion 22 is not necessarily provided on the lower limit projection 21, and may be provided on the upper limit projection 11.

Preferably, in combination with the above solution, in order to better prevent the main gear from wobbling, the clearance between the outer side of the arch 22 and the groove wall of the lower limiting ring groove 32 is 0.1 mm.

Preferably, in combination with the above solution, in order to reduce friction, lubricating oil is smeared in both the upper limiting ring groove 31 and the lower limiting ring groove 32.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited to the above embodiments, and various modifications made by the method concept and technical solution of the present invention or those directly applied to other applications without modification fall within the protection scope of the present invention.

Claims

1. The utility model provides an automobile angle sensor location mounting structure, includes casing (1), casing (2) down, sets up master gear (3) between casing (1) and casing (2) down, characterized by, the up end of master gear (3) and down on the terminal surface around the circumference seted up respectively spacing annular (31), spacing annular (32) down, last casing (1) position of spacing annular (31) is provided with bellied upper limit bulge loop (11) relatively, casing (2) position of spacing annular (32) down relatively be provided with bellied lower limit bulge loop (21).

2. The automobile angle sensor positioning and mounting structure according to claim 1, wherein a one-side gap between the upper limit bulge loop (11) and the upper limit loop groove (31) is 0.4 mm.

3. The automobile angle sensor positioning and mounting structure according to claim 1, wherein the one-side clearance between the lower limit bulge loop (21) and the lower limit ring groove (32) is 0.4 mm.

4. The automobile angle sensor positioning and mounting structure according to claim 1, wherein the lower limit protruding ring (21) is provided with a plurality of outwardly arched parts (22) at regular intervals around the circumference.

5. The automobile angle sensor positioning and mounting structure as set forth in claim 4, wherein the clearance of the outer side of the arch portion (22) from the groove wall of the lower retainer ring groove (32) is 0.1 mm.

6. The automobile angle sensor positioning and mounting structure according to claim 1, wherein lubricating oil is coated in both the upper limiting ring groove (31) and the lower limiting ring groove (32).