Gasket protection structure, rear end cover, motor shell and motor
By setting a limit step in the bearing chamber and arranging the wave gasket inside it, the problem of reduced buffering effect of the wave gasket under interference impact is solved, and the service life of the wave gasket is extended.
Patent Information
- Application Number
- CN202421018723.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-11
AI Technical Summary
In the prior art, the buffering effect of the wave gasket may even be broken and damaged under long-term interference impact.
Set a limit step in the bearing chamber, and set the wave gasket inside the limit step. Set the height of the limit step reasonably according to the maximum height of the compressible limit of the wave gasket to avoid interference between the bearing parts and the wave gasket. impact.
It effectively avoids the problem of the corrugated gasket's buffering effect being reduced or even breaking and being damaged, and prolongs the service life of the corrugated gasket.
Smart Images
Figure CN222381439U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor technology, and in particular to a gasket protection structure, a rear end cover, a motor housing and a motor. Background Art
[0002] The motor includes a rotating shaft, which is rotatably disposed in the motor housing. To ensure smooth rotation of the rotating shaft, a bearing is sleeved on the rotating shaft of the motor, and the bearing is usually arranged in a bearing seat of the motor housing. During the operation of the motor, the rotating shaft may produce axial movement. In order to eliminate the axial movement, a common practice is to provide a corrugated gasket on the side of the bearing member close to the bottom of the bearing seat to cushion the bearing member and offset the axial movement. However, the corrugated gasket has a yield limit, and long-term interference impact will affect the cushioning effect of the corrugated gasket, and even cause breakage and damage in severe cases. Utility Model Content
[0003] Based on this, the present application provides a gasket protection structure, a rear end cover, a motor housing and a motor to improve the problem in the prior art that the corrugated gasket is subjected to interference impact and the buffering effect is reduced or even broken and damaged.
[0004] In the first aspect, the present application provides a gasket protection structure, which includes a bearing seat, a bearing chamber is provided on the bearing seat, the bearing chamber is used to arrange a corrugated gasket and a bearing member, and a limiting step is also provided on the inner side of the bearing chamber, the limiting step is arranged at the bottom of the bearing chamber, the corrugated gasket is arranged on the inner side of the limiting step, one side of the corrugated gasket abuts against the bottom of the bearing chamber, and the other side extends to between the top of the bearing chamber and the limiting step, the bearing member abuts against the corrugated gasket and pre-compresses the corrugated gasket, the bearing member does not contact the limiting step, the limiting step is used to limit the bearing member when the bearing member further compresses the corrugated gasket, and the height of the limiting step is not less than the minimum value of the maximum height of the corrugated gasket when it is compressed on the inner side of the limiting step.
[0005] In one of the embodiments, a first chamfered portion is provided between the bottom and the outer side of the bearing component, and the inner edge of the limiting step is vertically projected within a region corresponding to the first chamfered portion.
[0006] In one of the embodiments, a second chamfered portion is provided between a side of the limiting step close to the top of the bearing chamber and a side wall of the bearing chamber.
[0007] In one embodiment, the limiting step is configured to be ring-shaped.
[0008] In one embodiment, the corrugated gasket is an open corrugated gasket, and the outer diameter of the corrugated gasket is not greater than the inner diameter of the limiting step.
[0009] In one embodiment, the bearing seat includes an aluminum casting and a steel sleeve, the aluminum casting is made of aluminum, the steel sleeve is made of steel, the steel sleeve is integrally cast in the aluminum casting, and the bearing chamber is arranged on the steel sleeve.
[0010] In one embodiment, the limiting step is integrally formed with the steel sleeve.
[0011] In a second aspect, the present application provides a rear end cover, which includes any one of the gasket protection structures provided in the present application.
[0012] In a third aspect, the present application provides a motor housing, which includes any one of the gasket protection structures provided in the present application.
[0013] In a fourth aspect, the present application provides a motor, comprising any one of the rear end covers provided in the present application or any one of the motor housings provided in the present application.
[0014] The present application arranges a limit step in the bearing chamber to block the movement of the bearing component, and arranges the corrugated gasket on the inner side of the limit step. At the same time, the height of the limit step is reasonably set according to the maximum height of the compressible limit of the corrugated gasket, so as to avoid the bearing component from causing interference impact on the corrugated gasket, thereby avoiding the problem of reduced buffering effect or even breakage and damage of the corrugated gasket. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A longitudinal cross-sectional view of the gasket protection structure provided in Example 1 of the present application;
[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle;
[0017] Figure 3 An exploded view of the gasket protection structure provided in Example 1 of the present application;
[0018] Figure 4 A schematic structural diagram of a corrugated gasket of a gasket protection structure provided in Example 1 of the present application;
[0019] Figure 5 This is a schematic diagram of the structure of the rear end cover provided in Example 2 of the present application.
[0020] Figure numerals: 100, bearing seat; 110, cast aluminum part; 120, steel kit; 200, bearing chamber; 300, corrugated gasket; 400, bearing part; 410, first chamfered portion; 500, limiting step; 510, second chamfered portion; 600, rear end cover. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0022] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.
[0023] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0024] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0025] Embodiment 1
[0026] Embodiment 1 of the present application provides a gasket protection structure, such as Figures 1 to 4As shown, the gasket protection structure includes a bearing seat 100, a bearing chamber 200 is arranged on the bearing seat 100, the bearing chamber 200 is used to arrange the corrugated gasket 300 and the bearing member 400, and a limiting step 500 is also arranged on the inner side of the bearing chamber 200, the limiting step 500 is arranged at the bottom of the bearing chamber 200, the corrugated gasket 300 is arranged on the inner side of the limiting step 500, one side of the corrugated gasket 300 is abutted against the bottom of the bearing chamber 200, and the other side extends to the bearing chamber 200. 00 and the limiting step 500, the bearing component 400 is in contact with the corrugated gasket 300 and pre-compresses the corrugated gasket 300, the bearing component 400 is not in contact with the limiting step 500, and the limiting step 500 is used to limit the bearing component 400 when the bearing component 400 further compresses the corrugated gasket 300, and the height of the limiting step 500 is not less than the minimum value of the maximum height of the corrugated gasket 300 when it is compressed on the inner side of the limiting step 500.
[0027] like Figure 1 As shown, in this embodiment, the bearing chamber 200 is provided on the bearing seat 100, which can be specifically set as a circular hole. The bearing chamber 200 is used to arrange the bearing member 400, which is a rotor bearing sleeved on the rotating shaft, and can be assembled in the bearing chamber 200 in an interference fit manner to improve the stability of the bearing member 400 in the bearing chamber 200. The bearing chamber 200 is also used to arrange the corrugated gasket 300, which is arranged at the bottom of the bearing chamber 200, and the bearing member 400 is arranged in the bearing chamber 200. When the bearing member 400 is assembled in place, the bearing member 400 can pre-compress the corrugated gasket 300.
[0028] like Figure 1 and Figure 2 As shown, in this embodiment, a limiting step 500 is further provided on the inner wall of the bearing chamber 200, and the limiting step 500 is provided at the bottom of the bearing chamber 200. The limiting step 500 is used to limit the bearing member 400 when the bearing member 400 moves axially in the bearing chamber 200, so as to prevent the bearing member 400 from over-compressing the corrugated gasket 300 when the bearing member 400 further compresses the corrugated gasket 300. The corrugated gasket 300 is provided on the inner side of the limiting step 500, and the corrugated gasket 300 is placed at the bottom of the bearing chamber 200.
[0029] like Figure 1 and Figure 3As shown, when the corrugated gasket 300 is not compressed, the maximum height of the corrugated gasket 300 is greater than the height of the limiting step 500, that is, when the corrugated gasket 300 is arranged on the inner side of the limiting step 500, the corrugated gasket 300 extends to between the top of the bearing chamber 200 and the limiting step 500, so that the bearing component 400 can pre-compress the corrugated gasket 300. When the bearing component 400 is interference-fitted in the bearing chamber 200 to pre-compress the corrugated gasket 300 and is assembled in place in the bearing chamber 200, the bearing component 400 does not contact the limiting step 500. When the bearing component 400 is further compressed by the axial movement of the bearing, the bearing component 400 moves and abuts against the limiting step 500. Since the bearing component 400 is blocked by the limiting step 500 , the distance that the bearing component 400 further compresses the corrugated gasket 300 is limited, thereby preventing the bearing component 400 from causing interference impact on the corrugated gasket 300 .
[0030] In this embodiment, the height of the limiting step 500 can be preferably 0.4-0.6 times the maximum height of the corrugated gasket 300 when it is not squeezed, which can be determined according to the compressible limit of the corrugated gasket 300; specifically, the height of the limiting step 500 should not be less than the maximum height of the corrugated gasket 300 when it is at the compressible limit, that is, the minimum value of the maximum height of the corrugated gasket 300.
[0031] It can be understood that the present application provides a limit step 500 in the bearing chamber 200 to block the movement of the bearing component 400, and the corrugated gasket 300 is set on the inner side of the limit step 500. At the same time, the height of the limit step 500 is reasonably set according to the maximum height of the compressible limit of the corrugated gasket 300. This can avoid the bearing component 400 from causing interference impact on the corrugated gasket 300, and further avoid the problem of reduced buffering effect or even breakage and damage of the corrugated gasket 300.
[0032] Specifically, a first chamfered portion 410 is provided between the bottom and the outer side of the bearing member 400 , and the inner edge of the limiting step 500 is vertically projected into a region corresponding to the first chamfered portion 410 .
[0033] like Figure 1 and Figure 2As shown, in this embodiment, it is exemplarily explained that the first chamfered portion 410 is set as an outer rounded corner, which is set between the bottom and the outer side of the bearing member 400. At the same time, the first chamfered portion 410 can also be set between the bottom and the inner side of the bearing member 400, and is symmetrically set up from top to bottom. The inner edge of the limiting step 500, that is, the position where the inner side of the limiting step 500 is located, is vertically projected in the area corresponding to the first chamfered portion 410, that is, the inner radius of the limiting step 500 is not less than the inner radius of the bearing chamber 200 minus the radius of the first chamfered portion 410. When the bearing member 400 is further compressed by the axial movement of the rotating shaft and the corrugated gasket 300 is further compressed, the part that abuts against the limiting step 500 is the first chamfered portion 410 of the bearing member 400, and the first chamfered portion 410 can extend below the top of the limiting step 500, and at this time, the movable distance of the bearing member 400 increases.
[0034] It can be understood that, by providing the first chamfered portion 410 on the bearing member 400 and by reasonably setting the inner radius of the first chamfered portion 410 , the buffering effect of the corrugated gasket 300 on the axial movement of the rotating shaft can be improved without increasing the axial dimension of the bearing chamber 200 .
[0035] More specifically, a second chamfered portion 510 is provided between a side of the limiting step 500 close to the top of the bearing chamber 200 and a side wall of the bearing chamber 200 .
[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the second chamfered portion 510 is exemplarily described as an inner fillet, which is arranged between the side of the limiting step 500 close to the top of the bearing chamber 200 and the side wall of the bearing chamber 200, that is, between the step surface of the limiting step 500 and the side wall of the bearing chamber 200. The radius of the second chamfered portion 510 can be smaller than the radius of the first chamfered portion 410, and when the bearing member 400 further compresses the corrugated gasket 300, its first chamfered portion 410 abuts against the second chamfered portion 510.
[0037] It can be understood that, in this embodiment, by providing a second chamfered portion 510 on the limiting step 500, when the bearing component 400 further compresses the corrugated gasket 300, the first chamfered portion 410 can abut against the second chamfered portion 510, so as to reduce the impact and possible wear on the bearing component 400 when it contacts the limiting step 500.
[0038] Specifically, the limiting step 500 is configured to be ring-shaped.
[0039] like Figure 2 and Figure 3As shown, in this embodiment, the limiting step 500 is exemplarily provided continuously along the circumference of the bearing chamber 200 to form a circular ring structure. During the preparation process, the limiting step 500 can be prepared and formed by machining. Setting the limiting step 500 as a continuous ring can reduce the number of processing times of the limiting step 500, reduce the processing difficulty, and improve the processing efficiency. At the same time, when the annular limiting step 500 contacts the bearing member 400, the blocking effect on the bearing member 400 is better.
[0040] Specifically, the corrugated gasket 300 is an open corrugated gasket, and the outer diameter of the corrugated gasket 300 is not greater than the inner diameter of the limiting step 500 .
[0041] like Figure 3 and Figure 4 As shown, in this embodiment, the type of the corrugated gasket 300 can be an open corrugated gasket, that is, the head and tail ends of the corrugated gasket 300 are not connected. The outer diameter of the corrugated gasket 300 should be less than or equal to the inner diameter of the limiting step 500, so that the corrugated gasket 300 can be directly arranged on the inner side of the limiting step 500. When the corrugated gasket 300 is compressed, due to the deformation of the corrugated structure, its cross-sectional area will decrease and its outer diameter will decrease. Therefore, when the bearing member 400 compresses the corrugated gasket 300, the corrugated gasket 300 will not be restricted by the limiting step 500 and can achieve normal compression.
[0042] It can be understood that, in this embodiment, by reasonably setting the type and outer diameter of the corrugated gasket 300 , it is convenient to arrange the corrugated gasket 300 on the inner side of the limit adjustment.
[0043] Specifically, the bearing seat 100 includes an aluminum casting 110 and a steel sleeve 120 . The aluminum casting 110 is made of aluminum, and the steel sleeve 120 is made of steel. The steel sleeve 120 is integrally cast in the aluminum casting 110 , and the bearing chamber 200 is disposed on the steel sleeve 120 .
[0044] like Figure 1 and Figure 3 As shown, in this embodiment, the aluminum casting 110 is used to achieve a lightweight design, and can be made of aluminum alloy. The cylinder kit is used to ensure the structural strength and rigidity of the bearing seat 100, and can be made of stainless steel. The bearing chamber 200 is provided on the cylinder kit. The steel kit 120 can be integrally cast in the aluminum casting 110 to stabilize the connection.
[0045] It can be understood that this embodiment, by reasonably arranging the component structure of the bearing seat 100, facilitates achieving a lightweight design while ensuring the structural strength and rigidity of the bearing seat 100, thereby facilitating the corrugated gasket 300 to effectively buffer the axial movement of the rotating shaft.
[0046] More specifically, the limiting step 500 is integrally formed with the steel sleeve 120 .
[0047] like Figure 1 and Figure 3 As shown, in this embodiment, the limiting step 500 and the steel sleeve 120 are set as an integral structure, that is, the limiting step 500 and the steel sleeve 120 are made of the same material and are integrally formed with the steel sleeve 120. The above-mentioned preparation method can not only realize the convenient processing of the limiting step 500, but also ensure the structural strength and rigidity of the limiting step 500, so that the limiting step 500 is not easy to be deformed when blocking the bearing member 400, so that the blocking effect is not reduced or even fails.
[0048] The implementation principle of a gasket protection structure provided in the first embodiment of the present application is:
[0049] During assembly, the corrugated gasket 300 is arranged at the bottom of the bearing chamber 200, and the corrugated gasket 300 is arranged on the inner side of the limiting step 500. Then, the bearing component 400 is installed in the bearing chamber 200 with interference fit, and the bearing component 400 is abutted against the corrugated gasket 300, and the bearing component 400 pre-compresses the corrugated gasket 300, and the bearing component 400 does not contact the limiting step 500 at this time. When the shaft moves axially and the bearing component 400 further compresses the corrugated gasket 300, the bearing component 400 moves and its first chamfered portion 410 abuts against the second chamfered portion 510 of the limiting step 500, and the limiting step 500 limits the movement of the bearing component 400 to prevent the bearing component 400 from causing interference compression on the corrugated gasket 300.
[0050] The present application sets a limiting step 500 in the bearing chamber 200 to block the movement of the bearing component 400, and sets the corrugated gasket 300 on the inner side of the limiting step 500. At the same time, the height of the limiting step 500 is reasonably set according to the maximum height of the compressible limit of the corrugated gasket 300. This can avoid the bearing component 400 from causing interference impact on the corrugated gasket 300, and further avoid the problem of reduced buffering effect or even breakage and damage of the corrugated gasket 300.
[0051] Embodiment 2
[0052] Embodiment 2 of the present application provides a rear end cover, and the rear end cover 600 includes any one of the gasket protection structures provided in the present application.
[0053] like Figure 1 and Figure 5As shown, in this embodiment, it is exemplified that the bearing seat 100 can be set on the rear end cover 600 of the motor, and the cast aluminum part 110 of the bearing seat 100 can be integrally formed with the rear end cover 600, that is, the steel kit 120 is integrally cast on the rear end cover 600 of the motor.
[0054] Embodiment 3
[0055] Embodiment 3 of the present application provides a motor housing, and the motor housing includes any one of the gasket protection structures provided in the present application.
[0056] In this embodiment, it is explained by way of example that the difference between this embodiment and the second embodiment is that the bearing seat 100 is arranged on the motor housing, the motor housing includes an intermediate housing and an end cover integrally arranged at one end of the intermediate housing, the end cover can be any one of the front end cover and the rear end cover 600, and the bearing seat 100 can be integrally formed on the end cover.
[0057] Embodiment 4
[0058] Embodiment 4 of the present application provides a motor, which includes any one of the rear end covers 600 provided in the present application or any one of the motor housings provided in the present application.
[0059] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0060] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A gasket protection structure, characterized in that: The gasket protection structure comprises a bearing seat (100), a bearing chamber (200) is arranged on the bearing seat (100), the bearing chamber (200) is used to arrange a corrugated gasket (300) and a bearing member (400), a limiting step (500) is further arranged on the inner side of the bearing chamber (200), the limiting step (500) is arranged at the bottom of the bearing chamber (200), the corrugated gasket (300) is arranged on the inner side of the limiting step (500), one side of the corrugated gasket (300) is in contact with the bottom of the bearing chamber (200), and the other side extends to the bearing chamber (200). ) between the top of the bearing member (400) and the limiting step (500), the bearing member (400) abuts against the corrugated gasket (300) and pre-compresses the corrugated gasket (300), the bearing member (400) does not contact the limiting step (500), the limiting step (500) is used to limit the bearing member (400) when the bearing member (400) further compresses the corrugated gasket (300), and the height of the limiting step (500) is not less than the minimum value of the maximum height of the corrugated gasket (300) when it is compressed on the inner side of the limiting step (500).
2. The gasket protection structure according to claim 1, characterized in that: A first chamfered portion (410) is provided between the bottom and the outer side of the bearing member (400), and the inner edge of the limiting step (500) is vertically projected within a region corresponding to the first chamfered portion (410).
3. The gasket protection structure according to claim 2, characterized in that: A second chamfered portion (510) is provided between a side of the limiting step (500) close to the top of the bearing chamber (200) and a side wall of the bearing chamber (200).
4. The gasket protection structure according to claim 1, characterized in that: The limiting step (500) is arranged in a ring shape.
5. The gasket protection structure according to claim 1, characterized in that: The corrugated gasket (300) is an open corrugated gasket, and the outer diameter of the corrugated gasket (300) is not greater than the inner diameter of the limiting step (500).
6. The gasket protection structure according to claim 1, characterized in that: The bearing seat (100) comprises an aluminum casting (110) and a steel sleeve (120); the aluminum casting (110) is made of aluminum, the steel sleeve (120) is made of steel, the steel sleeve (120) is integrally cast in the aluminum casting (110), and the bearing chamber (200) is arranged on the steel sleeve (120).
7. The gasket protection structure according to claim 6, characterized in that: The limiting step (500) and the steel sleeve (120) are integrally formed.
8. A rear end cover, characterized in that: The rear end cover (600) comprises a gasket protection structure as described in any one of claims 1 to 7.
9. A motor housing, characterized in that: The motor housing comprises a gasket protection structure as claimed in any one of claims 1 to 7.
10. A motor, characterized in that: The motor comprises the rear end cover (600) as claimed in claim 8 or the motor housing as claimed in claim 9.