High-strength brake motor shell

Abstract

The utility model relates to a high-strength brake motor shell, which is characterized in that a plurality of reinforcing ribs are circumferentially and uniformly distributed on the inner wall of an arched body, one end of each reinforcing rib is propped against the middle part of a small cylinder and is over against a bearing hole, and the lower end of each reinforcing rib extends to a thickened part at the lower end of the arched body; therefore, the supporting force of the small cylinder on the rotating shaft and the self-strength of the small cylinder are greatly improved, and the technical problem that the joint of the brake motor shell and the rotating shaft is easy to damage is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a high-strength brake motor housing. Background Art

[0002] The brake motor is a driving device used in the brake pump of an electric vehicle. Its internal rotating shaft is a hollow rotating shaft, and a screw rod and a nut are connected to the center hole of the hollow rotating shaft. One end of the screw rod is connected to the position where the front end of the hollow rotating shaft is rotatably connected to the motor housing, and the other end is suspended. The nut is threadedly connected to the outside of the screw rod (see patent number ZL202323063801.6, utility model patent named "Brake Motor"). Since the screw rod is suspended, when it rotates at high speed, as long as the center of gravity of the screw rod is offset, the suspended end will shake, which will cause unstable force at the connection between the rotor and the motor housing, resulting in damage to the conventional motor housing at the bearing assembly groove (that is, the bearing hole described in the present invention). Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-strength brake motor housing to solve the technical problem that the connection between the brake motor housing and the rotating shaft is easily damaged.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-strength brake motor housing, including a large cylinder and a small cylinder arranged coaxially, the small cylinder is located outside one end of the large cylinder, the large cylinder and the small cylinder are connected to each other through a dome, the outer diameter of the small cylinder is smaller than the inner diameter of the large cylinder, the top of the dome is open and the opening is connected to the middle of the outer circumferential wall of the small cylinder, and the lower end is connected to the end face of one end of the large cylinder, the small cylinder is used to embed a bearing, and the inner diameter of the small cylinder is the same as the outer diameter of the bearing Adaptation, the small cylinder is integrally formed with a radially inward extending retaining ring at one end away from the large cylinder, the retaining ring is used to block one end of the bearing, and a circumferentially extending groove is provided on the inner wall of the end of the small cylinder close to the large cylinder, the groove is used to clamp a retaining spring, and the retaining spring is used to block the other end of the bearing, and a bearing hole is formed between the groove and the retaining ring, and a plurality of reinforcing ribs are evenly distributed circumferentially on the inner wall of the dome body, and each reinforcing rib extends radially along the large cylinder, one end of any reinforcing rib is connected to the outer circumferential wall of the small cylinder, and the other end extends to the bottom of the small cylinder.

[0005] As a preferred solution, the position where the dome body is connected to the small cylindrical body is aligned with the center of the axial length of the bearing hole.

[0006] As a preferred solution, the lower edge of one end of the reinforcing rib connected to the small cylindrical body is opposite to the slot.

[0007] As a preferred solution, the inner wall of the top end of the large cylinder protrudes inward to form a thickened portion, the wall thickness of the end where the dome body connects to the large cylinder is the same as the thickness of the thickened portion, and the wall thickness of the end where the dome body connects to the large cylinder is greater than the wall thickness of the other end.

[0008] As a preferred solution, the joints between the dome and the outer wall of the small cylinder are transitioned through concave arc corners.

[0009] As a preferred solution, the end of the large cylinder away from the dome is connected to an annular connecting seat, and the annular connecting seat is provided with three connecting plates evenly distributed circumferentially outside the large cylinder, and each connecting plate is provided with a connecting hole.

[0010] The beneficial effect of the present invention is that the present invention greatly improves the supporting force of the small cylinder on the rotating shaft and the self-strength of the small cylinder by arranging a plurality of circumferentially evenly distributed reinforcing ribs on the inner wall of the dome body, and makes one end of the reinforcing rib abut against the middle part of the small cylinder and face the bearing hole, and the lower end extends to the thickened part of the lower end of the dome body, thereby effectively avoiding the technical problem that the connection between the brake motor housing and the rotating shaft is easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 It is a partially cutaway perspective view of the present utility model;

[0013] Figure 2 It is a half-section view of the utility model after the reinforcement;

[0014] Figure 1 and Figure 2 Middle: 1. Large cylinder; 101. Thickened part; 2. Small cylinder; 3. Dome; 4. Retaining ring; 5. Slot; 6. Bearing hole; 7. Reinforcement rib; 8. Concave arc inner corner; 9. Annular connecting seat; 10. Connecting plate; 11. Connecting hole. DETAILED DESCRIPTION

[0015] The specific implementation scheme of the present utility model is described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 and Figure 2The high-strength brake motor housing shown in the figure includes a large cylindrical body 1 and a small cylindrical body 2 arranged coaxially. The small cylindrical body 2 is located outside one end of the large cylindrical body 1. The large cylindrical body 1 and the small cylindrical body 2 are connected to each other through a dome 3. The outer diameter of the small cylindrical body 2 is smaller than the inner diameter of the large cylindrical body 1. The top of the dome 3 is open and the opening is connected to the middle part of the outer circumferential wall of the small cylindrical body 2, and the lower end is connected to the end face of one end of the large cylindrical body 1. The small cylindrical body 2 is used to embed a bearing. The inner diameter of the small cylindrical body 2 is adapted to the outer diameter of the bearing. The small cylindrical body 2 is away from the large cylindrical body. A radially inwardly extending retaining ring 4 is integrally formed at one end of the cylinder 1. The retaining ring 4 is used to block one end of the bearing. A circumferentially extending groove 5 is provided on the inner wall of the end of the small cylinder 2 close to the large cylinder 1. The groove 5 is used to clamp a retaining spring, which is used to block the other end of the bearing. A bearing hole 6 is formed between the groove 5 and the retaining ring 4. A plurality of reinforcing ribs 7 are evenly distributed circumferentially on the inner wall of the dome body 3. Each reinforcing rib 7 extends radially along the large cylinder 1. One end of any reinforcing rib 7 is connected to the outer circumferential wall of the small cylinder 2, and the other end extends to the bottom of the small cylinder 2.

[0017] By providing a plurality of circumferentially evenly distributed reinforcing ribs 7 on the inner wall of the dome 3, with one end of the reinforcing rib 7 abutting the middle of the small cylindrical body 2 and facing the bearing hole 6, and the lower end extending to the thickened portion of the lower end of the dome 3, the support force of the small cylindrical body 2 on the rotating shaft and the inherent strength of the small cylindrical body 2 are greatly improved, effectively avoiding the technical problem of easy damage at the connection between the brake motor housing and the rotating shaft. In addition, the provision of the reinforcing ribs 7 on the inner wall of the dome 3 in this embodiment also effectively avoids the problem of increased installation density caused by the increased external dimensions of the motor housing.

[0018] In this embodiment, the dome 3 connects to the small cylindrical body 2 at the center of the axial length of the bearing hole 6, thus providing the most stable support. In this embodiment, the lower edge of the end where the reinforcing rib 7 connects to the small cylindrical body 2 faces the retaining groove 5. This means that the reinforcing rib 7 can fully support most of the bearing hole, providing strong support for the small cylindrical body 2 at the bearing connection. The deflection force exerted on the bearing by the brake motor shaft is mainly concentrated at the support point of the reinforcing rib 7, thus further ensuring that the small cylindrical body 2 is not damaged by the deflection force of the shaft.

[0019] This embodiment further enhances the inner wall of the top end of the large cylindrical body 1 by protruding inward to form a thickened portion 101. The wall thickness of the end of the dome 3 where it meets the large cylindrical body 1 is the same as the thickened portion 101, while the wall thickness of the end where the dome 3 meets the large cylindrical body 1 is thicker than that of the other end. By thickening the bottom thickness of the dome 3 and the top thickness of the large cylindrical body 1, the connection reliability between the large cylindrical body 1 and the dome 3 is improved, further enhancing the ability of the connection between the large cylindrical body 1 and the dome 3 to resist the yaw force of the rotating shaft.

[0020] The dome 3 and the outer wall of the small cylindrical body 2 described in this embodiment preferably adopt a concave arc internal angle 8 for transition, so as to further expand the contact area between the reinforcing rib 7 and the small cylindrical body 2 and further enhance the supporting effect of the reinforcing rib 7 on the small cylindrical body 2.

[0021] In this embodiment, an annular connecting seat 9 is connected to the end of the large cylindrical body 1 away from the dome body 3. The annular connecting seat 9 is provided with three connecting plates 10 evenly distributed circumferentially outside the large cylindrical body 1. Each connecting plate 10 is provided with a connecting hole 11. The annular connecting seat 9, connecting plates 10, and connecting holes 11 are provided to facilitate the fixed connection of the outer shell, improve the rotational stability of the rotating shaft, reduce the deflection amplitude, and reduce the lateral force exerted by the deflection of the rotating shaft on the small cylindrical body 2.

[0022] The working principle of this utility model is as follows: By providing a plurality of circumferentially evenly distributed reinforcing ribs 7 on the inner wall of the dome 3, one end of the reinforcing rib 7 abuts the middle portion of the small cylindrical body 2 and faces the bearing hole 6, and the lower end extends to the thickened portion of the lower end of the dome 3, the support force of the small cylindrical body 2 on the rotating shaft and the inherent strength of the small cylindrical body 2 are greatly enhanced, effectively avoiding the technical problem of easy damage at the connection between the brake motor housing and the rotating shaft. In addition, the provision of the reinforcing ribs 7 on the inner wall of the dome 3 in this embodiment also effectively avoids the problem of increased installation density caused by the increased external dimensions of the motor housing.

[0023] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A high-strength brake motor housing, comprising a coaxially arranged large cylinder (1) and a small cylinder (2), wherein the small cylinder (2) is located outside one end of the large cylinder (1), and the large cylinder (1) and the small cylinder (2) are connected to each other through a dome (3), characterized in that: The outer diameter of the small cylindrical body (2) is smaller than the inner diameter of the large cylindrical body (1). The top end of the dome body (3) is open and the opening is connected to the middle of the outer circumferential wall of the small cylindrical body (2). The lower end is connected to the end face of one end of the large cylindrical body (1). The small cylindrical body (2) is used to embed a bearing. The inner diameter of the small cylindrical body (2) is adapted to the outer diameter of the bearing. The end of the small cylindrical body (2) away from the large cylindrical body (1) is integrally formed with a radially inwardly extending retaining ring (4). The retaining ring (4) is used to block one end of the bearing. 2) A circumferentially extending slot (5) is provided on the inner wall of one end close to the large cylindrical body (1), the slot (5) is used to clamp a retaining spring, and the retaining spring is used to block the other end of the bearing, and a bearing hole (6) is formed between the slot (5) and the retaining ring (4). A plurality of reinforcing ribs (7) are uniformly distributed circumferentially on the inner wall of the dome body (3), and each reinforcing rib (7) extends radially along the large cylindrical body (1). One end of any reinforcing rib (7) is connected to the outer circumferential wall of the small cylindrical body (2), and the other end extends to the bottom of the small cylindrical body (2).

2. The high-strength brake motor housing according to claim 1, characterized in that: The position where the dome body (3) is connected to the small cylindrical body (2) is aligned with the center of the axial length of the bearing hole (6).

3. The high-strength brake motor housing according to claim 1, characterized in that: The lower edge of one end of the reinforcing rib (7) connected to the small cylindrical body (2) is opposite to the clamping groove (5).

4. The high-strength brake motor housing according to claim 1, characterized in that: The inner wall of the top end of the large cylindrical body (1) protrudes inward to form a thickened portion (101), and the wall thickness of one end of the dome body (3) that is connected to the large cylindrical body (1) is the same as the thickness of the thickened portion (101), and the wall thickness of the end of the dome body (3) that is connected to the large cylindrical body (1) is greater than the wall thickness of the other end.

5. The high-strength brake motor housing according to claim 1, characterized in that: The joints between the dome (3) and the outer wall of the small cylindrical body (2) are transitioned through concave arc inner corners (8).

6. The high-strength brake motor housing according to any one of claims 1 to 5, characterized in that: An annular connecting seat (9) is connected to one end of the large cylindrical body (1) away from the dome body (3). The annular connecting seat (9) is provided with three connecting plates (10) uniformly distributed outside the large cylindrical body (1) in the circumferential direction. Each connecting plate (10) is provided with a connecting hole (11).

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