Locking structure of steering motor bearing

Abstract

The utility model discloses a locking structure of a steering motor bearing. The locking structure comprises a casing, a bearing and a locking nut, an end cover is arranged at the end of the machine shell, a positioning cavity suitable for positioning and containing a bearing is formed in the middle of the inner wall of the end cover, and locking threads are formed in the position, close to a port, of the inner wall of the end cover. The locking nut is screwed into the locking thread of the end cover, and the end face of the outer ring of the bearing is pressed through the end of the locking nut. A threaded push broach groove is further formed in the position, between the locking thread and the positioning cavity, of the inner wall of the end cover. The locking device is firm and stable in locking and not prone to deformation and damage.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a locking structure for a steering motor bearing. Background Technology

[0002] Currently, the locking method used for EPS and brake motor bearings is to directly rivet the material on the side of the bearing with a rivet head, so that the material on the side is squeezed onto the arc surface of the bearing. The disadvantage of this structure is that the material being squeezed and the pressure being applied are inconsistent with the arc size of the bearing, which can cause the bearing to loosen or be damaged. Therefore, the existing bearing locking structure has poor stability, short service life, and is prone to failure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a locking structure for steering motor bearings that is secure and stable and not prone to deformation and damage.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A locking structure for a steering motor bearing includes a housing, a bearing, and a locking nut;

[0006] The end of the housing has an end cap, and a positioning chamber suitable for positioning and placing the bearing is formed in the middle of the inner wall of the end cap. A locking thread is provided on the inner wall of the end cap near the port.

[0007] The locking nut is screwed into the locking thread of the end cap, and the end of the locking nut presses against the outer ring end face of the bearing.

[0008] A threaded pusher groove is also provided on the inner wall of the end cap at the position between the locking thread and the positioning chamber.

[0009] Furthermore, the locking nut has an external thread on its outer side that is adapted to the locking thread.

[0010] Furthermore, threadlocker is applied to the external thread.

[0011] Furthermore, the inner ring of the locking nut has multiple wrench notches.

[0012] Furthermore, the axial thickness of the bearing is greater than the axial depth of the positioning chamber.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] The end cap of this invention uses a positioning chamber to position and restrict the bearing. Then, the locking thread and locking nut at the opening of the end cap cooperate to press the end face of the bearing, preventing axial and circumferential rotation and sliding. This screw-type pressing provides more even force, ensuring that the bearing is locked securely and stably, and is not prone to loosening or deformation. At the same time, the presence of the threaded pusher groove can prevent locking failure, further ensuring the stability and firmness of the locking and extending the service life of the structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the structure of this utility model;

[0017] Figure 3 This is a side view of the present invention;

[0018] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of section AA;

[0019] Figure 5 for Figure 4 Enlarged structural diagram of section B in the middle;

[0020] Among them, 1. housing; 100. positioning chamber; 101. locking thread; 102. threaded pusher groove; 2. end cover; 3. bearing; 4. locking nut; 40. external thread; 41. wrench notch. Detailed Implementation

[0021] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] like Figure 1-5 As shown, in this embodiment, a locking structure for a steering motor bearing is provided, which mainly consists of a housing 1, a bearing 3, and a locking nut 4. The housing 1 is cylindrical, and an end cap 2 is provided at one end of the housing 1. The diameter of the end cap 2 is smaller than that of the housing 1 and it is a hollow cylindrical structure. A positioning chamber 100 suitable for positioning and placing the bearing 3 is formed in the middle of the inner wall of the end cap 2. The positioning chamber 100 is a cylindrical stepped structure, and the axial thickness of the bearing 3 is greater than the axial depth of the positioning chamber 100. In this way, the bearing 3 can be pressed and contacted by the locking nut 4 after it is positioned.

[0023] Of course, a locking thread 101 is also provided on the inner wall of the end cover 2 near the port, and an external thread 40 adapted to the locking thread 101 is provided on the outer side of the locking nut 4. In this way, when the locking nut 4 is screwed into the locking thread 101 of the end cover 2, the outer ring end face of the bearing 3 can be pressed by the end of the locking nut 4, thereby realizing the overall locking and fixing of the bearing 3, preventing it from rotating and sliding in the axial and circumferential directions. This screw-type pressing has a relatively uniform force distribution, which can ensure that the bearing 3 is locked firmly and stably, and is not easy to loosen or deform.

[0024] Additionally, refer to Figure 5 As shown, to further ensure the stability and firmness of the locking, a threaded pusher groove 102 is also provided on the inner wall of the end cover 2 in this embodiment at the position between the locking thread 101 and the positioning chamber 100. The presence of the threaded pusher groove can prevent locking failure, thereby ensuring the stability and firmness of the locking and extending the service life of the structure.

[0025] The structure of this embodiment uses a locking nut 4 to fix the motor bearing 3 in the positioning chamber 100 of the end cover 2, so that the bearing 3 will not be damaged or deformed due to excessive external riveting pressure, nor will it be unable to be fixed due to insufficient riveting pressure, resulting in abnormal noise and operational damage.

[0026] Finally, to prevent the locking nut 4 from loosening, thread-locking adhesive can be applied to the external thread 40 in this embodiment. Alternatively, loosening can be prevented by damaging the thread structure. To facilitate tightening the locking nut 4, four wrench notches 41 are provided on the inner ring of the locking nut 4, allowing the locking nut 4 to be tightened using a specific wrench or tightening tool.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The above specific embodiments further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lock structure of a steering motor bearing, characterized by: It comprises a casing (1), a bearing (3) and a locking nut (4). The end cover (2) has a positioning cavity (100) in the middle of the inner wall, which is suitable for positioning the bearing (3); the locking thread (101) is arranged near the port of the inner wall of the end cover (2); The locking nut (4) is screwed into the locking thread (101) of the end cover (2), and the outer ring end face of the bearing (3) is pressed by the end of the locking nut (4); The end cover (2) is provided with a threaded push knife groove (102) between the locking thread (101) and the positioning cavity (100) on the inner wall.

2. The locking structure of a steering motor bearing according to claim 1, characterized in that: The outer side of the locking nut (4) is provided with an outer thread (40) matched with the locking thread (101).

3. The locking structure of a steering motor bearing according to claim 2, characterized in that: The outer thread (40) is provided with a threaded glue.

4. The locking structure of a steering motor bearing according to claim 1, characterized in that: The inner ring of the locking nut (4) is provided with a plurality of wrench notches (41).

5. The locking structure of a steering motor bearing according to claim 1, characterized in that: The axial thickness of the bearing (3) is higher than the axial depth of the positioning cavity (100).

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