Damping ring, end cover and plastic encapsulated motor

Abstract

The application provides a damping ring, an end cover and a plastic-sealed motor, wherein the damping ring comprises a damping ring body (1) with a center hole (3), the damping ring body (1) comprises an inner ring (9) and an outer ring, and a groove (2) is arranged on an annular bottom surface (6) formed between the inner ring (9) and the outer ring; the end cover is matched with the damping ring, and the plastic-sealed motor comprises the end cover and the damping ring. The application effectively solves the problem that load noise is generated due to the contact and collision between the outgoing line part of the motor and the terminal product shell, and eliminates the after-sales complaints of customers.

Description

Technical Field

[0001] This invention relates to the field of vibration damping device technology, and in particular to a vibration damping ring and equipment for installing it. Background Technology

[0002] Vibration damping rings, as common vibration damping devices, are widely used in motors of air conditioners, dehumidifiers, and small household appliances, and have the advantages of vibration reduction and noise reduction.

[0003] Currently, the vibration damping rings and end caps of traditional plastic-encapsulated motors are fitted with an interference fit. When packaging the motor, it is typically placed radially. This results in a small contact area between the inner ring of the vibration damping ring and the outer ring of the bearing housing in the end cap. During long-distance transportation, relative collisions can occur, causing the vibration damping ring to easily detach from the motor bearing housing. Furthermore, after prolonged operation on the customer's end product, the vibration damping ring and end cap can easily shift relative to each other, causing the motor's output terminals to come into contact with and collide with the load housing, resulting in significant load noise. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a shock-absorbing ring, an end cap, and a plastic-encapsulated motor. This invention effectively solves the problem of load noise caused by contact and collision between the motor's output wires and the casing of the end product, thus eliminating customer complaints related to this issue.

[0005] The present invention provides a shock absorber ring, comprising a shock absorber ring body having a central hole, the shock absorber ring body comprising an inner ring and an outer ring, and a groove being provided on the annular bottom surface formed between the inner ring and the outer ring.

[0006] As a further optimization of the present invention, the grooves are evenly distributed on the annular bottom surface.

[0007] As a further optimization of the present invention, the inner ring is provided with a first transition surface, a second transition surface and an axial surface in sequence.

[0008] As a further optimization of the present invention, the inner ring is provided with an annular groove that can serve as an axial positioning feature.

[0009] As a further optimization of the present invention, the groove is a rectangular groove and is evenly distributed on the annular bottom surface.

[0010] The present invention provides an end cap that is used in conjunction with the shock-absorbing ring described above. The end cap includes an end cap body, and the end cap body is provided with a boss corresponding to the groove. The boss and the groove are interference-fitted.

[0011] As a further optimization of the present invention, the end cap body is provided with an end cap first plane, and the protrusions are evenly distributed on the end cap first plane.

[0012] As a further optimization of the present invention, a bearing chamber is provided on the upper part of the end cap body, and an outer bearing outer ring is formed on the outside of the bearing chamber, with an annular boss provided on the outer bearing outer ring corresponding to the annular groove.

[0013] As a further optimization of the present invention, the maximum diameter of the annular boss is smaller than the maximum diameter on the first transition surface and larger than the minimum diameter on the first transition surface.

[0014] As a further optimization of the present invention, the annular groove and the annular boss are interference-fitted.

[0015] The present invention also provides a molded motor, including an injection-molded stator and rotor assembly, and further including the aforementioned shock-absorbing ring and the aforementioned end cover, wherein the inner ring of the shock-absorbing ring is interference-fitted with the outer ring of the bearing housing of the end cover.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The shock absorber, end cap, and encapsulated motor only require minor modifications to the structure of the shock absorber and end cap, without the need for new parts. The shock absorber and end cap are easy to manufacture; simply press the shock absorber axially into the end cap with external force, making operation simple and convenient. Due to the shock absorber's plasticity and shape memory, a tight fit is achieved through the combination of grooves and bosses, enabling axial and radial dual positioning of the shock absorber on the end cap. This effectively solves the problem of the shock absorber easily detaching during long-distance transportation and effectively prevents load noise caused by contact and collision between the motor's output cable and the end product housing, eliminating customer after-sales complaints arising from this issue. Attached Figure Description

[0018] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0019] Figure 1 This is a front view of the shock-absorbing ring of the present invention;

[0020] Figure 2 This is a three-dimensional view of the shock-absorbing ring of the present invention;

[0021] Figure 3 This is a cross-sectional view of the shock-absorbing ring of the present invention;

[0022] Figure 4 This is a perspective view of the end cap of the present invention;

[0023] Figure 5 This is a cross-sectional view of the end cap of the present invention;

[0024] Figure 6 This is a cross-sectional view of the damping ring and end cap of the present invention.

[0025] Figure 7This is a cross-sectional view of the encapsulated motor of the present invention.

[0026] In the above figures, 1. Damping ring body; 2. Groove; 3. Center hole; 4. First transition surface; 5. Annular groove; 6. Bottom surface; 7. Maximum diameter; 8. Minimum diameter; 9. Inner ring; 10. Axial surface; 11. Second transition surface; 12. End cover body; 13. Boss; 14. Bearing outer ring; 15. Annular boss; 16. First plane of end cover; 17. Bearing housing; 18. Injection molded stator; 19. Rotor assembly; 20. End cover; 21. Damping ring; 22. First radius; 23. Second radius.

[0027] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0030] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system comprising said element. In the description of this invention, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0031] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] like Figures 1-3 As shown, the present invention provides a shock-absorbing ring, preferably made of rubber. This rubber material is elastic, malleable, and has memory properties. The shock-absorbing ring has a circular ring structure, including a shock-absorbing ring body 1 with a central hole 3. The shock-absorbing ring body 1 includes an inner ring 9 and an outer ring. A groove 2 is provided on the annular bottom surface 6 formed between the inner ring 9 and the outer ring. Preferably, the groove 2 is rectangular. The grooves 2 are evenly distributed on the annular bottom surface 6.

[0033] The shock absorber ring of the present invention achieves radial positioning by setting grooves on the annular bottom surface, and the grooves are evenly distributed on the bottom surface of the shock absorber ring, which is beneficial to the radial positioning of the end cap and the shock absorber ring.

[0034] Continue as Figures 1-3 As shown, the inner ring 9 of the shock absorber ring of the present invention is sequentially provided with a first transition surface 4, a second transition surface 11 and an axial surface 10.

[0035] In the above, the end of the first transition surface is connected to the beginning of the second transition surface, and the end of the second transition surface forms a transition connection structure with the axial surface. The first transition surface has a maximum diameter 7 and a minimum diameter 8 in the axial direction. The maximum diameter of the elliptical annular boss 15 in the end cap is smaller than the maximum diameter 7 of the first transition arc surface and larger than the minimum diameter 8 of the first transition arc surface. The second radius 23 of the second transition surface should be smaller than the first radius 22 of the first transition arc surface. At the same time, the transition surface is designed as an arc, which reduces the contact area between the damping ring and the elliptical annular boss, thereby reducing the relative friction between the two and making it easier for the elliptical annular boss to pass through the transition connection structure by relying on the deformation of the damping ring.

[0036] In order to achieve axial positioning, the shock absorber ring of the present invention has an annular groove 5 on the inner ring 9, which can serve as an axial positioning feature. When the shock absorber ring is axially pressed into the end cap, the annular boss 15 on the end cap fits perfectly into the elliptical annular groove of the shock absorber ring, thus achieving axial positioning of the shock absorber ring.

[0037] like Figures 4-6 As shown, the present invention also provides an end cap, which is integrally formed using a stamping and stretching process, and is made of sheet metal materials such as hot-dip galvanized sheet. This end cap can be used with the aforementioned shock-absorbing ring. The end cap includes an end cap body 12, on which a boss 13 is provided corresponding to the groove 2. The boss 13 is interference-fitted with the groove 2 to provide radial positioning. A first end cap plane 16 is provided on the end cap body 12, and the bosses 13 are evenly distributed on the first end cap plane 16.

[0038] In the above, the boss 13 and the groove 2 are on the same axial circumference and have the same shape. They correspond one-to-one. The damping ring is axially pressed into the end cover. The boss and the groove are fitted by an interference fit. The boss on the end cover is completely nested in the groove of the damping ring to prevent the damping ring from rotating and to achieve radial fixation of the damping ring.

[0039] Continue as Figures 4-6 As shown, the upper part of the end cap body 12 of the present invention is provided with a bearing chamber 17, and an outer bearing outer ring 14 is formed on the outside of the bearing chamber 17. An annular boss 15 is provided on the outer bearing outer ring 14 corresponding to the annular groove 5 to play an axial positioning role. The annular groove 5 and the annular boss 15 are interference fit.

[0040] The annular boss is preferably elliptical, with the same shape as the annular groove, and both are on the axial circumference. The damping ring is axially pressed into the end cap. The elliptical annular boss and the elliptical annular groove are fitted with an interference fit. The elliptical annular boss is completely nested into the elliptical annular groove, which can effectively prevent the axial movement of the damping ring, thereby achieving axial fixation of the damping ring.

[0041] like Figure 7 As shown, the present invention provides a molded motor based on the above-mentioned shock-absorbing ring and end cover. The molded motor includes an injection-molded stator 18 and a rotor assembly 19, and also includes the above-mentioned shock-absorbing ring 21 and the above-mentioned end cover 20. The inner ring 9 of the shock-absorbing ring 21 is interference-fitted with the outer bearing outer ring 14 of the end cover 20.

[0042] This new type of encapsulated motor only changes the structure of the shock absorber and end cap, without adding any new parts. By relying on the combination of the groove of the shock absorber and the boss of the end cap, the shock absorber is positioned axially and radially on the end cap, which effectively solves the problem of the shock absorber easily falling off during long-distance transportation and effectively solves the problem of load noise caused by the contact and collision between the motor output part and the end product housing.

[0043] To further illustrate the beneficial effects of the present invention, its usage will be described in detail below:

[0044] First, the damping ring is axially pressed into the end cap. The maximum diameter 7 of the first transition surface of the damping ring is greater than the maximum diameter of the annular boss, allowing the annular boss to pass completely through the bottom surface of the damping ring. Second, the first transition surface is axially compressed by the elliptical annular boss, resulting in deformation, allowing the annular boss to pass through the first transition surface. Then, the damping ring also has a second transition arc surface. The second radius 23 of the second transition arc surface should be smaller than the first radius 22 of the first transition arc surface, thereby reducing the relative axial resistance between the damping ring and the end cap, facilitating employee operation, and enabling the elliptical boss on the end cap to pass through the second transition arc surface. Next, the axial circular surface 10 generates deformation, and the elliptical annular boss on the end cap passes through the axial circular surface. Finally, the bottom surface 6 of the damping ring is in complete contact with the first plane 16 of the end cap, and the boss 13 on the end cap is completely nested in the groove 2 of the damping ring, achieving radial positioning of the damping ring. Due to the plasticity and memory of the damping ring, the elliptical annular boss on the end cap is completely nested in the elliptical annular groove of the damping ring, achieving axial positioning of the damping ring. The dual axial and radial positioning of the shock absorber ring on the end cover effectively prevents the shock absorber ring from axially loosening and the motor from rotating radially relative to the shock absorber ring.

[0045] Obviously, the embodiments described above are only some embodiments of the present invention, and not all embodiments.

[0046] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A damping ring, comprising a damping ring body (1) having a central hole (3), said damping ring body (1) comprising an inner ring (9) and an outer ring, characterized in that, A groove (2) is provided on the annular bottom surface (6) formed between the inner ring (9) and the outer ring. The inner ring (9) is sequentially provided with a first transition surface (4), a second transition surface (11) and an axial surface (10); the end of the first transition surface (4) is connected to the beginning of the second transition surface (11), and the end of the second transition surface (11) and the axial surface (10) form a transition connection structure; the first transition surface (4) has a maximum diameter (7) and a minimum diameter (8) in the axial direction. Among them, the maximum diameter of the elliptical annular boss (15) in the end cap must be smaller than the maximum diameter (7) of the first transition surface and larger than the minimum diameter (8) of the first transition surface, and the second radius (23) of the second transition surface (11) should be smaller than the first radius (22) of the first transition surface (4); the end cap has an end cap body (12), and a bearing chamber (17) is provided on the upper part of the end cap body (12), and an outer bearing outer ring (14) is formed on the outside of the bearing chamber (17), and an annular boss (15) is provided on the outer bearing outer ring (14).

2. The shock absorber ring according to claim 1, characterized in that, The groove (2) is a rectangular groove and is evenly distributed on the annular bottom surface (6).

3. The shock absorber ring according to claim 1, characterized in that, The inner ring is provided with an annular groove (5) that can serve as an axial positioning feature.

4. An end cap, fitted to the shock-absorbing ring as described in claims 1-3, characterized in that, The end cap includes an end cap body (12), and the end cap body (12) is provided with a boss (13) corresponding to the groove (2), and the boss (13) is interference-fitted with the groove (2).

5. The end cap according to claim 4, characterized in that, The end cap body (12) is provided with an end cap first plane (16), and the bosses (13) are evenly distributed on the end cap first plane (16).

6. The end cap according to claim 5, characterized in that, The upper part of the end cap body (12) is provided with a bearing chamber (17), and an outer bearing outer ring (14) is formed on the outside of the bearing chamber (17). An annular boss (15) is provided on the outer bearing outer ring (14); the annular boss (15) corresponds to the annular groove (5).

7. The end cap according to claim 6, characterized in that, The annular groove (5) and the annular boss (15) are interference fit.

8. A molded motor, comprising an injection-molded stator (18) and a rotor assembly (19), characterized in that, It also includes the shock absorber ring (21) as described in claims 1-3, and the end cap (20) as described in claims 4-7, wherein the inner ring (9) of the shock absorber ring (21) is interference-fitted with the outer bearing outer ring (14) of the end cap (20).

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