Suspension bearing suitable for complex working conditions

Abstract

The suspension bearing comprises an upper cover, a rolling assembly and a lower cover, the whole upper cover is cylindrical, the top edge of the upper cover extends outwards to form a first top surface, the first top surface extends to form a first outer wall, the first outer wall extends outwards to form a second top surface, and the second top surface extends outwards to form a second outer wall. The first outer wall extends downwards to form a first barrier wall; the second top surface extends downwards to form a second outer wall, and the bottom edge of the upper cover extends outwards to form a first buckle; the upper cover is sleeved with the lower cover from the lower portion of the upper cover, the top of the lower cover is coaxially provided with a supporting wall and a second blocking wall, the second blocking wall is located on the outer side of the supporting wall, and the top of the lower cover extends inwards to form a second buckle; the rolling assembly is arranged between the upper cover and the supporting wall, when the upper cover and the lower cover are aligned and buckled through the first buckle and the second buckle, the first blocking wall is located between the supporting wall and the second blocking wall, and the second blocking wall is located between the first blocking wall and the second outer wall to form a double-labyrinth structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile suspension bearings, and in particular relates to a suspension bearing suitable for complex working conditions. Background Art

[0002] The suspension is used to connect the car wheels and body. It can reduce the impact force transmitted to the car body by the uneven road surface, reduce the vibration of the car body caused by it, and ensure that the car can run smoothly.

[0003] The suspension bearing is an important component of the suspension system. It is located at the upper end of the coil spring in the suspension system. The upper end of the suspension bearing is usually connected to the vehicle body through an upper support. The force from the wheel is transmitted to the vehicle body through the coil spring and the suspension bearing. The suspension bearing needs to be able to withstand large axial and radial forces.

[0004] As automobile sales become more internationalized, the driving environment of automobiles has become more diverse. For example, automobiles sold to Russia will face more muddy and watery environments. Insufficient sealing structure causes impurities to enter the bearing, corroding the internal components and causing abnormal noise in the bearing.

[0005] Most existing bearings use simple single labyrinth seals or contact seals. The sealing effect of single labyrinth seals is limited, and muddy water can easily penetrate into the rolling components, causing the rolling components to rust or wear, which in turn causes abnormal noise or failure of the suspension bearings. Contact seals are more expensive and significantly increase the friction torque of the suspension bearings, causing malfunctions in cold environments.

[0006] Therefore, it is necessary to provide a suspension bearing suitable for complex working conditions to solve or at least partially solve the above problems. Utility Model Content

[0007] The utility model provides a suspension bearing suitable for complex working conditions, optimizes the edge structures of the upper cover and the lower cover, forms a non-contact double-labyrinth sealing structure, effectively blocks external impurities such as water and dust from entering the bearing, and adapts to more complex working conditions.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0009] A suspension bearing suitable for complex working conditions, comprising an upper cover, a rolling assembly and a lower cover, the upper cover being cylindrical as a whole, the top edge of the upper cover extending outward to form a first top surface, the edge of the first top surface extending downward to form a first outer wall, the lower side edge of the first outer wall extending outward to form a second top surface, the lower side edge of the first outer wall extending downward to form a first barrier wall; the edge of the second top surface extending downward to form a second outer wall, the bottom edge of the upper cover extending outward to form a first buckle; the lower cover being cylindrical as a whole, the lower cover being sleeved on the outside of the upper cover from the bottom of the upper cover, and a support is coaxially arranged on the top of the lower cover The upper cover comprises a first barrier wall and a second barrier wall, wherein the second barrier wall is located on the outer side of the supporting wall, and the inner edge of the top of the lower cover extends inward to form a second buckle; the rolling assembly is arranged between the upper cover and the supporting wall, and when the upper cover and the lower cover are aligned and buckled with the first buckle and the second buckle, the first barrier wall is located between the supporting wall and the second barrier wall, the second barrier wall is located between the first barrier wall and the second outer wall, and the top height of the second barrier wall is higher than the bottom height of the first barrier wall, so that the supporting wall, the first barrier wall, the second barrier wall and the second outer wall form a double maze structure.

[0010] Preferably, a top height of the supporting wall is higher than a top height of the first barrier wall, and a bottom height of the second outer wall is lower than a bottom height of the second barrier wall.

[0011] Preferably, the rolling assembly includes a lower raceway, a rolling body retainer, a rolling body and an upper raceway, the inner side surface of the support wall is an arc shape similar to the lower raceway, the lower raceway is arranged on the inner side surface of the support wall, the rolling body retainer is arranged on the lower cover, the rolling bodies are arranged in sequence on the rolling body retainer and are fitted with the lower raceway, the upper raceway is fitted above the rolling body, and the side wall of the upper cover is an arc shape similar to the upper raceway; when the first buckle is aligned and buckled with the second buckle, the upper raceway is abutted against the upper cover.

[0012] Preferably, the radius of the arc of the inner side surface of the support wall is slightly smaller than the radius of the arc of the lower raceway, and the radius of the arc of the side wall of the upper cover is slightly smaller than the radius of the arc of the upper raceway. When not subjected to external pressure, the inner side surface of the support wall and the lower raceway, as well as the side wall of the upper cover and the upper raceway, are not completely in contact with each other. When subjected to external pressure, the upper raceway and the lower raceway are elastically deformed under the force, so that the lower raceway is completely in contact with the inner side surface of the support wall, and the upper raceway is completely in contact with the side wall of the upper cover, thereby increasing the contact area between the upper raceway and the lower raceway and the rolling body.

[0013] Preferably, the bottom ends of the first barrier wall and the second outer wall are both arc-shaped, and the curvature of the bottom ends is 2 / 3π~π.

[0014] Preferably, the top ends of the supporting wall and the second barrier wall are both arc-shaped, and the curvature of the top ends is 2 / 3π to π.

[0015] Preferably, the second top surface and the second outer wall are connected via an inclined surface, and the inclination angle between the inclined surface and the vertical surface is 55° to 75°.

[0016] Preferably, an annular mounting groove is provided on the top of the lower cover, the mounting groove is located on the inner side of the supporting wall, and the rolling element retainer is arranged in the mounting groove.

[0017] Preferably, the upper cover and the lower cover are both made of plastic.

[0018] Preferably, the lower raceway, the rolling element and the upper raceway are all made of metal, and the rolling element retainer is made of plastic.

[0019] Compared with the prior art, the technical solution of the embodiment of the utility model has beneficial effects.

[0020] For example, the utility model provides a suspension bearing suitable for complex working conditions, wherein the top edge of the upper cover extends outward to form a first top surface, the edge of the first top surface extends downward to form a first outer wall, the lower side edge of the first outer wall extends outward to form a second top surface, and the lower side edge of the first outer wall extends downward to form a first barrier wall; the edge of the second top surface extends downward to form a second outer wall, and the bottom edge of the upper cover extends outward to form a first buckle; the top of the lower cover is coaxially provided with a supporting wall and a second barrier wall, the second barrier wall is located on the outer side of the supporting wall, and the inner side edge of the top of the lower cover extends inward to form a second buckle; when the upper cover and the lower cover are aligned and buckled by the first buckle and the second buckle, the first barrier wall is located between the supporting wall and the second barrier wall, the second barrier wall is located between the first barrier wall and the second outer wall, and the top height of the second barrier wall is higher than the bottom height of the first barrier wall, so that the supporting wall, the first barrier wall, the second barrier wall and the second outer wall form a double labyrinth structure; the double labyrinth structure forms a non-contact seal, which effectively blocks external impurities such as water and dust from entering the bearing, and adapts to more complex working conditions.

[0021] For another example, the radius of the arc of the inner side surface of the supporting wall is slightly smaller than the radius of the arc of the lower raceway, and the radius of the arc of the side wall of the upper cover is slightly smaller than the radius of the arc of the upper raceway. When not subjected to external pressure, the inner side surface of the supporting wall and the lower raceway, as well as the side wall of the upper cover and the upper raceway, are not completely in contact with each other; when subjected to external pressure, the upper raceway and the lower raceway are elastically deformed under the force, so that the lower raceway is completely in contact with the inner side surface of the supporting wall, and the upper raceway is completely in contact with the side wall of the upper cover, while the contact area between the upper raceway, the lower raceway and the rolling body is increased; the arc design of the raceway increases the contact area between the rolling body and the raceway when subjected to force, thereby reducing the contact stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a suspension bearing suitable for complex working conditions according to an embodiment of the utility model;

[0023] Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle;

[0024] Figure 3 It is a cross-sectional view of a suspension bearing suitable for complex working conditions according to an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 100, upper cover; 200, rolling assembly; 300, lower cover;

[0027] 101, first top surface; 102, first outer wall; 103, second top surface; 104, first barrier wall; 105, second outer wall; 106, inclined surface; 107, first buckle;

[0028] 201, upper raceway; 202, rolling element; 203, lower raceway; 204, rolling element cage;

[0029] 301, supporting wall; 302, second barrier wall; 303, second buckle; 304, mounting groove. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and beneficial effects of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described below are only used to explain the present invention, rather than to limit the present invention. In addition, the same or similar reference numerals may be used in the figures to refer to the same or similar elements in different embodiments, and the description of the same or similar elements in different embodiments and the description of the prior art elements, features, effects, etc. may be omitted.

[0031] Reference Figure 1-Figure 3 , an embodiment of the utility model provides a suspension bearing suitable for complex working conditions.

[0032] Specifically, a suspension bearing suitable for complex working conditions includes an upper cover 100, a rolling assembly 200 and a lower cover 300. The upper cover 100 is cylindrical as a whole, and the top edge of the upper cover 100 extends outward to form a first top surface 101, and the edge of the first top surface 101 extends downward to form a first outer wall 102, and the lower side edge of the first outer wall 102 extends outward to form a second top surface 103, and the lower side edge of the first outer wall 102 extends downward to form a first barrier wall 104; the edge of the second top surface 103 extends downward to form a second outer wall 105, and the bottom edge of the upper cover 100 extends outward to form a first buckle 107; the lower cover 300 is cylindrical as a whole, and the lower cover 300 is sleeved on the outside of the upper cover 100 from the bottom of the upper cover 100, and the top of the lower cover 300 is coaxially provided with a support wall 301 and a second barrier wall 302, and the second barrier wall 302 is located on the outside of the support wall 301 , the inner edge of the top of the lower cover 300 extends inward to form a second buckle 303; the rolling assembly 200 is arranged between the upper cover 100 and the supporting wall 301, and when the upper cover 100 and the lower cover 300 are aligned and buckled with the first buckle 107 and the second buckle 303, the first barrier wall 104 is located between the supporting wall 301 and the second barrier wall 302, and the second barrier wall 302 is located between the first barrier wall 104 and the second outer wall 105, and the top height of the second barrier wall 302 is higher than the bottom height of the first barrier wall 104, so that the supporting wall 301, the first barrier wall 104, the second barrier wall 302 and the second outer wall 105 form a double labyrinth structure; the double labyrinth structure effectively blocks external impurities such as water and dust from entering the suspension bearing. The double labyrinth seal is a non-contact seal that is more economical than a contact seal, while reducing the torque of the suspension bearing and being less dependent on steering assistance.

[0033] In some embodiments, the top height of the supporting wall 301 is higher than the top height of the first barrier wall 104 , and the bottom height of the second outer wall 105 is lower than the bottom height of the second barrier wall 302 , so the blocking effect is better.

[0034] In some embodiments, the rolling assembly 200 includes a lower raceway 203, a rolling body retainer 204, a rolling body 202 and an upper raceway 201. The inner side surface of the support wall 301 is an arc shape similar to the lower raceway 203. The lower raceway 203 is arranged on the inner side surface of the support wall 301. The rolling body retainer 204 is arranged on the lower cover 300. The rolling bodies 202 are arranged in sequence on the rolling body retainer 204 and are fitted with the lower raceway 203. The upper raceway 201 is fitted above the rolling body 202. The side wall of the upper cover 100 is an arc shape similar to the upper raceway 201. When the first buckle 107 is aligned and buckled with the second buckle 303, the upper raceway 201 is abutted against the upper cover 100.

[0035] In some embodiments, the radius of the arc of the inner side surface of the support wall 301 is slightly smaller than the radius of the arc of the lower raceway 203, and the radius of the arc of the side wall of the upper cover 100 is slightly smaller than the radius of the arc of the upper raceway 201. When there is no external pressure, the inner side surface of the support wall 301 and the lower raceway 203, and the side wall of the upper cover 100 and the upper raceway 201 are not completely in contact with each other; when there is external pressure, the upper raceway 201 and the lower raceway 203 are elastically deformed under force. The lower raceway 203 is completely fitted with the inner side of the support wall 301, and the upper raceway 201 is completely fitted with the side wall of the upper cover 100, while the contact area between the upper raceway 201, the lower raceway 203 and the rolling body 202 is increased; the curvature design of the raceway increases the contact area between the rolling body 202 and the raceway under stress, reduces the contact stress, and has a stronger wrapping effect on the rolling body 202; even under a larger working load, it will not fall out, ensuring the quality of the bearing.

[0036] In some embodiments, the bottom ends of the first barrier wall 104 and the second outer wall 105 are both arc-shaped, and the curvature of the bottom ends is 2 / 3π~π; the top ends of the support wall 301 and the second barrier wall 302 are both arc-shaped, and the curvature of the top ends is 2 / 3π~π; since the upper cover 100 and the lower cover 300 are both made of plastic, through injection molding, the use of an arc-shaped top end can effectively cooperate with the manufacturing process and set a reasonable draft angle, making production more economical, with a high yield rate and guaranteed production capacity.

[0037] In some embodiments, the second top surface 103 and the second outer wall 105 are connected by a slope 106 , and the inclination angle of the slope 106 to the vertical surface is 55° to 75°, so that the outer edge is smoother and is convenient for installation.

[0038] In some embodiments, an annular mounting groove 304 is disposed on the top of the lower cover 300 . The mounting groove 304 is located on the inner side of the supporting wall 301 . The rolling element retainer 204 is disposed in the mounting groove 304 .

[0039] In some embodiments, the lower raceway 203 , the rolling element 202 , and the upper raceway 201 are all made of metal, and the rolling element retainer 204 is made of plastic.

[0040] In summary, the utility model provides a suspension bearing suitable for complex working conditions, wherein the top edge of the upper cover 100 extends outward to form a first top surface 101, the edge of the first top surface 101 extends downward to form a first outer wall 102, the lower side edge of the first outer wall 102 extends outward to form a second top surface 103, the lower side edge of the first outer wall 102 extends downward to form a first barrier wall 104; the edge of the second top surface 103 extends downward to form a second outer wall 105, and the bottom edge of the upper cover 100 extends outward to form a first buckle 107; the top of the lower cover 300 is coaxially provided with a support wall 301 and a second barrier wall 302, the second barrier wall 302 is located on the outer side of the support wall 301, and the lower cover 300 The inner edge of the top extends inward to form a second buckle 303; when the upper cover 100 and the lower cover 300 are aligned and buckled with the first buckle 107 and the second buckle 303, the first barrier wall 104 is located between the supporting wall 301 and the second barrier wall 302, the second barrier wall 302 is located between the first barrier wall 104 and the second outer wall 105, and the top height of the second barrier wall 302 is higher than the bottom height of the first barrier wall 104, so that the supporting wall 301, the first barrier wall 104, the second barrier wall 302 and the second outer wall 105 form a double maze structure; the double maze structure forms a non-contact seal, which effectively blocks external impurities such as water and dust from entering the bearing, and adapts to more complex working conditions.

[0041] Furthermore, the radius of the arc of the inner side surface of the support wall 301 of the utility model is slightly smaller than the radius of the arc of the lower raceway 203, and the radius of the arc of the side wall of the upper cover 100 is slightly smaller than the radius of the arc of the upper raceway 201. When not subjected to external pressure, the inner side surface of the support wall 301 and the lower raceway 203, as well as the side wall of the upper cover 100 and the upper raceway 201 are not completely in contact with each other; when subjected to external pressure, the upper raceway 201 and the lower raceway 203 are elastically deformed under force, so that the lower raceway 203 is completely in contact with the inner side surface of the support wall 301, and the upper raceway 201 is completely in contact with the side wall of the upper cover 100, while the contact area between the upper raceway 201, the lower raceway 203 and the rolling body 202 is increased; the curvature design of the raceway increases the contact area between the rolling body 202 and the raceway when subjected to force, thereby reducing the contact stress.

[0042] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative rather than limiting, unless otherwise stated. In specific implementations, the technical features of one or more dependent claims may be combined with the technical features of the independent claim, based on actual needs and where technically feasible, and may be derived from the technical features of the corresponding independent claim in any appropriate manner rather than simply through the specific combination listed in the claims.

Claims

1. A suspension bearing suitable for complex working conditions, characterized in that: The invention comprises an upper cover, a rolling assembly and a lower cover, wherein the upper cover is cylindrical as a whole, the top edge of the upper cover extends outward to form a first top surface, the edge of the first top surface extends downward to form a first outer wall, the lower side edge of the first outer wall extends outward to form a second top surface, the lower side edge of the first outer wall extends downward to form a first barrier wall; the edge of the second top surface extends downward to form a second outer wall, and the bottom edge of the upper cover extends outward to form a first buckle; the lower cover is cylindrical as a whole, the lower cover is sleeved on the outside of the upper cover from the bottom of the upper cover, and the top of the lower cover is coaxially provided with a support wall and a second barrier wall , the second barrier wall is located on the outside of the supporting wall, and the inner edge of the top of the lower cover extends inward to form a second buckle; the rolling assembly is arranged between the upper cover and the supporting wall, and when the upper cover and the lower cover are aligned and buckled by the first buckle and the second buckle, the first barrier wall is located between the supporting wall and the second barrier wall, the second barrier wall is located between the first barrier wall and the second outer wall, and the top height of the second barrier wall is higher than the bottom height of the first barrier wall, so that the supporting wall, the first barrier wall, the second barrier wall and the second outer wall form a double maze structure.

2. The suspension bearing suitable for complex working conditions according to claim 1, characterized in that: The top height of the supporting wall is higher than the top height of the first barrier wall, and the bottom height of the second outer wall is lower than the bottom height of the second barrier wall.

3. The suspension bearing suitable for complex working conditions according to claim 1, characterized in that: The rolling assembly includes a lower raceway, a rolling element retainer, a rolling element and an upper raceway, the inner side surface of the support wall is an arc shape similar to the lower raceway, the lower raceway is arranged on the inner side surface of the support wall, the rolling element retainer is arranged on the lower cover, the rolling elements are arranged in sequence on the rolling element retainer and are arranged in close contact with the lower raceway, the upper raceway is arranged in close contact above the rolling element, and the side wall of the upper cover is an arc shape similar to the upper raceway; When the first buckle is aligned and buckled with the second buckle, the upper raceway is disposed in abutment with the upper cover.

4. The suspension bearing suitable for complex working conditions according to claim 3, characterized in that: The radius of the arc of the inner side surface of the support wall is slightly smaller than the radius of the arc of the lower raceway, and the radius of the arc of the side wall of the upper cover is slightly smaller than the radius of the arc of the upper raceway. When not subjected to external pressure, the inner side surface of the support wall and the lower raceway, as well as the side wall of the upper cover and the upper raceway, are not completely in contact with each other. When subjected to external pressure, the upper raceway and the lower raceway are elastically deformed under the force, so that the lower raceway is completely in contact with the inner side surface of the support wall, and the upper raceway is completely in contact with the side wall of the upper cover, thereby increasing the contact area between the upper raceway and the lower raceway and the rolling body.

5. The suspension bearing suitable for complex working conditions according to claim 1, characterized in that: The bottom ends of the first barrier wall and the second outer wall are both arc-shaped, and the curvature of the bottom ends is 2 / 3π~π.

6. The suspension bearing suitable for complex working conditions according to claim 1, characterized in that: The top ends of the supporting wall and the second barrier wall are both arranged in an arc shape, and the curvature of the top ends is 2 / 3π to π.

7. The suspension bearing suitable for complex working conditions according to claim 1, characterized in that: The second top surface and the second outer wall are connected via an inclined surface, and an inclination angle between the inclined surface and the vertical surface is 55° to 75°.

8. The suspension bearing suitable for complex working conditions according to claim 3, characterized in that: The top of the lower cover is provided with an annular mounting groove, the mounting groove is located on the inner side of the supporting wall, and the rolling element retainer is arranged in the mounting groove.

9. The suspension bearing suitable for complex working conditions according to claim 1, characterized in that: The upper cover and the lower cover are both made of plastic.

10. The suspension bearing suitable for complex working conditions according to claim 3, characterized in that: The lower raceway, the rolling element and the upper raceway are all made of metal, and the rolling element retainer is made of plastic.

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