Durable plane pressure bearing

Abstract

The utility model discloses a durable plane pressure bearing which comprises a lower cover body, a first framework and a sealing assembly, wherein a shaft hole penetrates through the center of the lower cover body; the first framework is made of a rigid material; the first framework is embedded in the lower cover body around the shaft hole; the sealing assembly is arranged on the upper end face of the lower cover body. The sealing assembly comprises a first ring body, a second ring body and a connecting assembly used for connecting the first ring body and the second ring body. The first ring body is detachably and annularly arranged at the shaft hole of the lower cover body; the second ring body is detachably arranged on the outer ring of the lower cover body; the connecting assembly is connected with the first ring body and the second ring body and embedded in the upper end face of the lower cover body. The utility model solves the technical problems that the lower cover of the bearing is easy to deform and the sealing ring is easy to fall off, and achieves the technical effect of improving the durability of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of planar pressure bearings, and particularly to a durable planar pressure bearing. Background Art

[0002] A planar pressure bearing (also known as a thrust sliding bearing) is a sliding bearing that mainly bears axial loads and is commonly used in rotating components to reduce friction, transmit thrust or support axial forces. Currently, it is generally used as an automotive shock absorber bearing in the automotive shock absorption field. A planar pressure bearing made of rubber or plastic has characteristics such as lightweight, corrosion resistance, and shock absorption.

[0003] The existing planar pressure bearings used in automotive shock absorber assemblies include an upper cover and a lower cover coaxially connected and made of rubber or plastic. The lower cover is made of plastic, and the shaft hole penetrates through the upper cover and the lower cover. Usually, one or two separate sealing rings are provided at the connection between the upper cover and the lower cover. The sealing ring is usually fixed to the lower cover of the bearing. However, during the use of the bearing, the upper cover bears the load and applies a load to the lower cover. As the use time increases, the housing of the lower cover will gradually undergo irreversible deformation. The deformation of the lower cover will damage the connection with the sealing ring, resulting in the loosening and detachment of the sealing ring. This will cause the sealing performance of the bearing to decline, affect the waterproof and dustproof effects of the bearing, and at the same time, after the lower cover is deformed, the load-bearing performance of the bearing will decline. These problems will accelerate the damage of the bearing, affect the service life of the bearing, and lead to frequent maintenance of the automotive shock absorber assembly.

[0004] Therefore, it is necessary to design a durable bearing. Summary of the Utility Model

[0005] This application provides a durable planar pressure bearing to solve the technical problems that the lower cover of the bearing is prone to deformation and the sealing ring is prone to falling off.

[0006] A durable planar pressure bearing provided by this application includes: a lower cover body penetrated by a shaft hole at the center, a first skeleton made of rigid material, and a sealing assembly; the first skeleton is embedded in the lower cover body around the shaft hole; the sealing assembly is arranged on the upper end surface of the lower cover body; the sealing assembly includes a first ring body, a second ring body, and a connection component for connecting the first ring body and the second ring body; the first ring body is detachably arranged around the shaft hole of the lower cover body; the second ring body is detachably arranged on the outer circle of the lower cover body; the connection component connects the first ring body and the second ring body, and the connection component is embedded in the upper end surface of the lower cover body.

[0007] By adopting the above technical solution, a rigid first skeleton is embedded in the lower cover body, which improves the anti-deformation ability of the lower cover body, reduces the probability of the sealing component loosening and detaching, ensures the running stability of the bearing, improves the durability and service life of the bearing. A connecting component is arranged between the first ring body and the second ring body installed inside and outside to strengthen the connection between the first ring body and the second ring body, and the connecting component is embedded and installed on the upper surface of the lower cover body, further strengthening the fixation of the sealing component on the lower cover body, avoiding the loosening and detachment of the sealing component after the deformation of the lower cover body, and improving the durability of the bearing.

[0008] Preferably, a ring-shaped support ring is formed by the downward extension at the shaft hole of the lower cover body, and the part of the first skeleton located at the shaft hole extends downward and is embedded in the support ring around the shaft hole.

[0009] By adopting the above technical solution, a support ring extending downward is arranged at the shaft hole of the lower cover body, and the first skeleton extends downward synchronously and is embedded in the support ring, providing support for the lower cover body from bottom to top, further improving the anti-deformation ability of the lower cover body, reducing the probability of the sealing component loosening and detaching, ensuring the running stability of the bearing, and improving the durability and service life of the bearing.

[0010] Preferably, the connecting component includes a plurality of connecting pieces. The plurality of connecting pieces are circumferentially spaced between the first ring body and the second ring body. The outer end of each connecting piece is connected to the second ring body, the inner end of each connecting piece is connected to the first ring body, and each connecting piece is embedded in the upper end surface of the lower cover body.

[0011] By adopting the above technical solution, a plurality of connecting pieces are arranged between the first ring body and the second ring body installed inside and outside to provide radial tension, avoiding the loosening and detachment of the first ring body and the second ring body away from the lower cover body.

[0012] Preferably, a plurality of first grooves adapted for the connecting pieces to be embedded are provided in a ring shape on the upper end surface of the lower cover body. The first grooves penetrate the lower cover body radially, and after the connecting pieces are embedded in the first grooves, the upper end surfaces of the connecting pieces are flush with the upper end surfaces of the first grooves.

[0013] By adopting the above technical solution, first grooves adapted to the connecting pieces are provided, so that the connecting pieces are embedded in the first grooves and are flush with the upper end surfaces of the first grooves, avoiding the uneven structure on the upper end surface of the lower cover body, which causes the wear of the upper cover body to accelerate, and while reducing the space occupied by the connecting pieces, reducing the influence of grooving on the lower cover body on the performance strength of the lower cover body.

[0014] Preferably, a first slot adapted for the first ring body to be inserted and installed is provided in a ring shape at the inner circle of the upper end surface of the lower cover body, and the inner end of each first groove is communicated with the first slot.

[0015] By adopting the above technical solution, the first slot is provided to complete the detachable assembly of the first ring body, and the first slot provides radial limiting support for the first ring body, further improving the anti-deformation performance of the sealing assembly.

[0016] Preferably, a plurality of fixing teeth are provided at the outer edge of the upper end surface of the lower cover body, and the plurality of fixing teeth are evenly spaced circumferentially. A second slot is formed between every two adjacent fixing teeth. A plurality of first bumps adapted to be inserted into the second slot are evenly spaced on the inner circumferential surface of the second ring body; the outer end of each first groove is radially communicated with the corresponding second slot, and the outer end of each connecting member is disposed on the corresponding first bump; after each first bump is inserted into the corresponding second slot, the upper end surface of each first bump is flush with the upper end surface of the fixing tooth, the inner peripheral wall of the second ring body is attached to the outer wall of each fixing tooth, and the lower end surface of the second ring body is attached to the upper end surface of the lower cover body.

[0017] By adopting the above technical solution, the fixing teeth and the second slot are provided to complete the detachable connection and fixation of the second ring body, and at the same time, the fixing teeth provide radial limiting support for the second ring body, further improving the anti-deformation performance of the sealing assembly.

[0018] Preferably, the first ring body, the second ring body, the plurality of first bumps and the plurality of connecting members are integrally formed.

[0019] By adopting the above technical solution, the mutually communicated first groove, the first slot and the second slot provide a space for the one-time casting and molding of the sealing assembly, and the sealing assembly integrally formed with overmolding on the lower cover body has better connection strength.

[0020] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0021] 1. Embedding a rigid first skeleton in the lower cover body improves the anti-deformation ability of the lower cover body, reduces the probability of the sealing assembly loosening and detaching, ensures the running stability of the bearing, and improves the durability and service life of the bearing;

[0022] 2. A support ring extending downward is provided at the shaft hole of the lower cover body, and the first skeleton is synchronously extended downward and embedded in the support ring to provide support for the lower cover body from bottom to top, further improving the anti-deformation ability of the lower cover body, reducing the probability of the sealing assembly loosening and detaching, ensuring the running stability of the bearing, and improving the durability and service life of the bearing;

[0023] 3. A connecting component is provided between the first ring body and the second ring body installed inside and outside to strengthen the connection between the first ring body and the second ring body, and the connecting component is embedded in the upper surface of the lower cover body, further strengthening the fixation of the sealing component on the lower cover body, preventing the sealing component from loosening and detaching after the lower cover body deforms, improving the durability of the bearing, and providing radial tensile force at the same time to prevent the first ring body and the second ring body from loosening and detaching away from the lower cover body;

[0024] 4. A first groove adapted to the connecting piece is provided, so that the connecting piece is embedded in the first groove and flush with the upper end surface of the first groove, preventing the upper end surface of the lower cover body from having an uneven structure, which may accelerate the wear of the upper cover body, and while reducing the space occupied by the connecting piece, reducing the influence of grooving on the lower cover body on the performance strength of the lower cover body;

[0025] 5. A first slot, fixing teeth and a second slot are provided to complete the detachable connection and fixation of the first ring body and the second ring body. At the same time, the first slot and the fixing teeth respectively provide radial limiting support for the first ring body and the second ring body, further improving the anti-deformation performance of the sealing component;

[0026] 6. The mutually connected first groove, first slot and second slot are provided, providing a space for one-time casting and molding of the sealing component, and the sealing component integrally formed with rubber coating on the lower cover body has better connection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is an exploded axonometric view of a durable plain pressure bearing provided by the present application;

[0029] Figure 2 It is an exploded side view of the lower cover body and the sealing component in a durable plain pressure bearing provided by the present application;

[0030] Figure 3 is Figure 2 a cross-sectional view taken along the A-A direction in

[0031] Figure 4 It is an exploded axonometric view of the lower cover body, the first skeleton and the sealing component in a durable plain pressure bearing provided by the present application.

[0032] Explanation of the accompanying drawings: 1. upper cover body; 2. lower cover body; 21. first groove; 22. first slot; 23. fixing tooth; 24. second slot; 25. support ring; 31. first ring body; 32. second ring body; 321. first protrusion; 33. connecting piece; 4. first skeleton; 5. axial hole. DETAILED DESCRIPTION

[0033] The present application provides a durable plane pressure bearing, which is used to solve the technical problem in the prior art that the lower cover sealing ring of the bearing is easy to fall off.

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] like Figures 1 to 4An embodiment of the present application provides a durable plain pressure bearing, including: a lower cover body 2 penetrated by a shaft hole 5 at the center, a first skeleton 4 made of a rigid material, and a sealing assembly; the first skeleton 4 is embedded in the lower cover body 2 around the shaft hole 5; the sealing assembly is arranged on the upper end surface of the lower cover body 2; a first ring body 31 is detachably arranged around the shaft hole 5 of the lower cover body 2; a second ring body 32 is detachably arranged on the outer ring of the lower cover body 2; a connecting assembly connects the first ring body 31 and the second ring body 32, and the connecting assembly is embedded in the upper end surface of the lower cover body 2.

[0040] More preferably, in the embodiment provided by the present application, the bearing is composed of an annular lower cover body 2 and an annular upper cover body 1 stacked in sequence from bottom to top, the lower cover body 2 and the upper cover body 1 are coaxially arranged and penetrated by a shaft hole 5 at the center.

[0041] As Figure 3 and Figure 4 As shown, the lower cover body 2 is provided with an annular support ring 25 extending downward at the shaft hole 5. The cross-section of the lower cover body 2 in the axial direction is similar to an "L" shape. The first skeleton 4 is embedded inside the lower cover body 2. The thickness of the first skeleton 4 is 1.2 mm. The first skeleton 4 is annular. In the radial direction, a part of the first skeleton 4 extends downward and surrounds the shaft hole 5 and is embedded inside the support ring 25. The cross-section of the first skeleton 4 is similar to an "L" shape as that of the lower cover body 2; wherein, the lower cover body 2 is made of "PA66-GF35 material", and the first skeleton 4 is made of rigid "DC01 material".

[0042] In the production process, the first skeleton 4 is manufactured first, then the lower cover body 2 is injection-molded to wrap the first skeleton 4, and finally a sealing assembly made of TPU material is coated on the lower cover body 2 to complete the production of the lower cover body 2.

[0043] As Figure 1 and Figure 3As shown in the figure, the sealing assembly includes a first ring body 31, a second ring body 32 and sixteen connecting members 33. The sealing assembly is arranged on the upper surface of the lower cover body 2. A first groove 21 is annularly arranged near the shaft hole 5 of the lower cover body 2. The first ring body 31 is inserted into the first groove 21. Twenty-four fixing teeth 23 are annularly arranged near the outer ring of the lower cover body 2 at uniformly spaced intervals. In the axial direction, the outer contours of the twenty-four fixing teeth 23 cooperate to form a circle with the same inner diameter as that of the second ring body 32. A second slot 24 is formed between every two adjacent fixing teeth 23. Twenty-four first protrusions 321 are annularly arranged on the inner ring surface of the second ring body 32 at uniformly spaced intervals. The distance between any two first protrusions 321 is the same as the distance between two adjacent second slots 24. The second ring body 32 is fixed on the lower cover body 2 by inserting the twenty-four first protrusions 321 into the corresponding twenty-four second slots 24. The sixteen connecting members 33 are arranged at circumferential intervals in groups of two between the first ring body 31 and the second ring body 32, and the outer end of each connecting member 33 is connected to the corresponding first protrusion 321.

[0044] In the direction from the outer end to the inner end, the upper surface of the connecting member 33 first extends horizontally, then the arc bulges forward, then the arc depresses and descends, then continues to extend horizontally, and finally two steps are formed at the inner end. A step structure is provided at the bottom of the outer end of each connecting member 33. A convex platform adapted to fit the step structure at the outer end is provided on the upper surface of the lower cover body 2 at the outer end of the corresponding first groove 21. The inner end of each connecting member 33 is fixed on the first ring body 31. A step structure is provided at the connection between each connecting member 33 and the first ring body 31. A convex platform adapted to fit the step structure at the inner end is provided on the upper surface of the lower cover body 2 at the inner end of the corresponding first groove 21; wherein the first ring body 31, the first protrusions 321, the second ring body 32 and the connecting members 33 are integrally formed.

[0045] Sixteen first grooves 21 are annularly arranged on the upper surface of the lower cover body 2. The sixteen first grooves 21 are uniformly spaced between the fixing teeth 23 and the first slot 22, and one end of each first groove 21 communicates with a corresponding second slot 24, and the other end of each first groove 21 communicates with the first slot 22. The shape of the first groove 21 fits the shape of the connecting member 33. When the connecting member 33 is embedded in the first groove 21, the upper surface of the lower cover body 2 is flat and continuous without unevenness.

[0046] In the production process, the lower cover body 2 and the sealing assembly can be manufactured separately and assembled, or the lower cover body 2 can be produced first by casting and then the sealing assembly made of TPU material can be coated on the lower cover body 2 to make the connection between the sealing assembly and the lower cover body 2 more firm.

[0047] In this embodiment, by embedding a rigid first skeleton 4 inside the lower cover body 2, the compressive strength and anti-deformation ability of the lower cover body 2 are improved, thereby avoiding the decrease in the service life of the bearing caused by the deformation of the lower cover body 2 and improving the durability of the bearing. By connecting the first ring body 31 and the second ring body 32 through the connecting member 33, a radial tensile force is provided to the first ring body 31 and the second ring body 32 to prevent the loosening and detachment of the first ring body 31 and the second ring body 32. The sealing assembly is embedded on the upper surface of the lower cover body 2 through the first groove 21, the first slot 22 and the second slot 24, reducing the excessive space occupied by the connecting member 33 and at the same time reducing the influence of the slotting on the performance of the lower cover body 2, and improving the durability of the bearing.

[0048] It should be noted that the above-mentioned sequence of embodiments of the present application is only for description and does not represent the superiority or inferiority of the embodiments. And the above description of specific embodiments of this specification is made. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be executed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0049] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

[0050] This specification and the drawings are only exemplary illustrations of the present application and are considered to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application and its equivalent technologies, the present application is intended to include these changes and modifications.

Claims

1. A durable plane pressure bearing, characterized by: The invention comprises a lower cover body (2) with an axial hole (5) passing through the center thereof, a first frame (4) made of a rigid material and a sealing component; the first frame (4) surrounds the axial hole (5) and is embedded in the lower cover body (2); the sealing component is arranged on the upper end surface of the lower cover body (2); the sealing component comprises a first ring body (31), a second ring body (32) and a connecting component for connecting the first ring body (31) and the second ring body (32); the first ring body (31) is detachably arranged around the axial hole (5) of the lower cover body (2); the second ring body (32) is detachably arranged at the outer ring of the lower cover body (2); the connecting component connects the first ring body (31) and the second ring body (32), and the connecting component is embedded in the upper end surface of the lower cover body (2).

2. A durable plane pressure bearing according to claim 1, characterized in that: The shaft hole (5) of the lower cover body (2) extends downward to form an annular support ring (25), and the portion of the first frame (4) located at the shaft hole (5) extends downward and surrounds the shaft hole (5) and is embedded in the support ring (25).

3. A durable plane pressure bearing according to claim 1 or 2, characterized in that: The connection assembly comprises a plurality of connection members (33), wherein the plurality of connection members (33) are circumferentially spaced apart and arranged between the first circle body (31) and the second circle body (32), the outer end of each connection member (33) is connected to the second circle body (32), the inner end of each connection member (33) is connected to the first circle body (31), and each connection member (33) is embedded in the upper end surface of the lower cover body (2).

4. A durable plane pressure bearing according to claim 3, characterized in that: The upper end surface of the lower cover body (2) is provided with a plurality of first grooves (21) suitable for embedding the connecting piece (33), the first grooves (21) radially passing through the lower cover body (2), and after the connecting piece (33) is embedded in the first groove (21), the upper end surface of the connecting piece (33) is flush with the upper end surface of the first groove (21).

5. A durable plane pressure bearing according to claim 4, characterized in that: A first slot (22) suitable for inserting and installing the first ring body (31) is provided at the inner ring of the upper end surface of the lower cover body (2), and the inner end of each of the first grooves (21) is connected to the first slot (22).

6. A durable plane pressure bearing according to claim 4 or 5, characterized in that: A plurality of fixed teeth (23) are arranged at the outer edge of the upper end surface of the lower cover body (2), and the plurality of fixed teeth (23) are evenly spaced in the circumferential direction, and a second slot (24) is formed between every two adjacent fixed teeth (23). A plurality of first protrusions (321) suitable for being inserted into the second slot (24) are evenly spaced on the inner ring surface of the second ring body (32); the outer end of each first groove (21) is radially connected to the corresponding second slot (24), and the outer end of each connecting member (33) is arranged on the corresponding first protrusion (321); after each first protrusion (321) is inserted into the corresponding second slot (24), the upper end surface of each first protrusion (321) is flush with the upper end surface of the fixed tooth (23), the inner circumferential wall of the second ring body (32) is in contact with the outer wall of each fixed tooth (23), and the lower end surface of the second ring body (32) is in contact with the upper end surface of the lower cover body (2).

7. A durable plane pressure bearing according to claim 6, characterized in that: The first ring body (31), the second ring body (32), the plurality of first protrusions (321) and the plurality of connecting members (33) are integrally formed.

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