Polyurethane roof

Abstract

The utility model discloses a polyurethane top plate which comprises an outer support, a mounting hole is coaxially formed in the outer support, a cover plate is arranged at the top end of the mounting hole in an interference fit mode, a limiting ring is integrally formed on the inner wall of the mounting hole and located below the cover plate, and a lining assembly is arranged in the mounting hole and located above the limiting ring. According to the utility model, the polyurethane body is used for replacing the traditional rubber body, on one hand, the polyurethane body can bear the function of transmitting and absorbing huge impact load, and on the other hand, the vulcanization process can be reduced, so that the product development process is simple to control, and the production efficiency is improved. And the polyurethane body is limited in a space area between the limiting ring and the cover plate, so that the polyurethane body is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of top plates, in particular to a polyurethane top plate. Background Art

[0002] With the development of new energy vehicles, the weight of battery packs is also increasing as customers demand more and more vehicle endurance. The curb weight is getting heavier and heavier. At the same time, the space requirements for the entire vehicle are also increasing. The spacing between the mounting holes of the top plate bracket at the upper end of the shock absorber is getting larger, and it also has to withstand the huge impact load transmission and absorption functions. The traditional top plate bracket structure design is no longer capable of handling such a large installation space and huge impact loads at the same time. Utility Model Content

[0003] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions:

[0004] The polyurethane top plate includes an outer bracket, a mounting hole is coaxially arranged on the outer bracket, a cover plate is interference fit at the top end of the mounting hole, a limiting ring is integrally formed on the inner wall of the mounting hole and located below the cover plate, a bushing assembly is provided in the mounting hole and above the limiting ring, the outer diameter surface of the bushing assembly is interference fit with the mounting hole, and the bushing assembly includes a polyurethane body with a accommodating cavity and an inner sleeve, and the inner sleeve is embedded in the accommodating cavity of the polyurethane body.

[0005] As an improvement to the above technical solution, an annular limiting step is provided on the top of the mounting hole, and the outer end of the cover plate is located in the limiting step.

[0006] As an improvement to the above technical solution, countersunk holes for detecting riveting torque are distributed in an annular array on the upper surface of the cover plate.

[0007] As an improvement to the above technical solution, an annular mounting ring is extended outward from the top of the outer wall of the outer bracket, and multiple groups of through holes are formed on the mounting ring, and nuts are arranged in the through holes.

[0008] As an improvement to the above technical solution, the connection between the outer bracket and the mounting ring is a downwardly concave arc structure.

[0009] As an improvement of the above technical solution, the limiting ring includes a lower ring body connected to the outer bracket and an inner ring body arranged at the edge of the lower ring body.

[0010] Beneficial effects of the utility model:

[0011] By embedding the inner sleeve in the accommodating cavity of the polyurethane body, the inner sleeve and the polyurethane body are more tightly combined, the outer bracket and the inner sleeve play a supporting role, and the polyurethane body is arranged between the outer bracket and the inner sleeve, which can play a buffering role and absorb part of the bumps and shaking of the vehicle during driving. The polyurethane body replaces the traditional rubber body. On the one hand, it can withstand the huge impact load transmission and absorption function, and on the other hand, it can reduce the vulcanization process, making the product development process control simple. The polyurethane body is limited in the space area between the limit ring and the cover plate, which makes it easy to replace the polyurethane body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the main view of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the overall structure of the utility model.

[0014] Figure numerals: 10, cover plate; 20, outer bracket; 21, limiting ring; 22, mounting ring; 23, limiting step; 30, nut; 40, polyurethane body; 50, inner sleeve. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The polyurethane top plate includes an outer bracket 20, a mounting hole is coaxially provided on the outer bracket 20, the top end of the mounting hole is interference fit with a cover plate 10, a limiting ring 21 is integrally formed on the inner wall of the mounting hole and located below the cover plate 10, a bushing assembly is provided in the mounting hole and above the limiting ring 21, the outer diameter surface of the bushing assembly is interference fit with the mounting hole, the bushing assembly includes a polyurethane body 40 with a accommodating cavity and an inner sleeve 50, and the inner sleeve 50 is embedded in the accommodating cavity of the polyurethane body 40.

[0017] The inner sleeve 50 is embedded in the accommodating cavity of the polyurethane body 40, so that the inner sleeve 50 and the polyurethane body 40 are more tightly combined. The outer bracket 20 and the inner sleeve 50 play a supporting role, and the polyurethane body 40 is arranged between the outer bracket 20 and the inner sleeve 50, which can play a buffering role and absorb part of the bumps and shaking of the vehicle during driving. The polyurethane body 40 replaces the traditional rubber body. On the one hand, it can withstand the huge impact load transmission and absorption function, and on the other hand, it can reduce the vulcanization process, making the product development process control simple. The polyurethane body 40 is limited in the space area between the limit ring 21 and the cover plate 10, which is convenient for replacing the polyurethane body 40.

[0018] In one embodiment, an annular limiting step 23 is provided at the top of the mounting hole, and the outer end of the cover plate 10 is located in the limiting step 23, which can ensure that the height of each top connecting plate is consistent after assembly, the product has high stability, and the polyurethane body 40 can be limited by the cover plate 10.

[0019] In one embodiment, the upper surface of the cover plate 10 is provided with an annular array of countersunk holes 101 for detecting riveting torque. The cover plate 10 is made of alloy aluminum material, and the countersunk holes 101 facilitate the riveting torque detection of the product.

[0020] In one embodiment, an annular mounting ring 22 extends outward from the top of the outer wall of the outer bracket 20. The mounting ring 22 has multiple groups of through holes, and nuts 30 are set in the through holes. The mounting ring 22 is installed with the vehicle body through the nuts 30 on the mounting ring 22.

[0021] Since the existing mounting ring 22 has a large plane angle, resulting in substandard flatness, it will cause difficulty in loading. In order to avoid the difficulty in loading, in one embodiment, the connection between the outer bracket 20 and the mounting ring 22 is a downward concave arc structure, which reduces the area where the mounting ring 22 fits the vehicle body.

[0022] In one embodiment, the limiting ring 21 includes a lower ring body connected to the outer bracket 20 and an inner ring body arranged at the edge of the lower ring body. The polyurethane body 40 is limited in the axial direction by the lower ring body, and the polyurethane body 40 is limited in the radial direction by the inner ring body.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. Polyurethane top plate, characterized in that, The invention comprises an outer bracket (20), a mounting hole is coaxially provided on the outer bracket (20), a cover plate (10) is interference-fitted at the top end of the mounting hole, a limiting ring (21) is integrally formed on the inner wall of the mounting hole and located below the cover plate (10), a bushing assembly is provided in the mounting hole and located above the limiting ring (21), the outer diameter surface of the bushing assembly is interference-fitted with the mounting hole, and the bushing assembly comprises a polyurethane body (40) having a receiving cavity and an inner sleeve (50), and the inner sleeve (50) is embedded in the receiving cavity of the polyurethane body (40).

2. The polyurethane top plate according to claim 1, characterized in that: An annular limiting step (23) is provided at the top of the mounting hole, and the outer end of the cover plate (10) is located in the limiting step (23).

3. The polyurethane top plate according to claim 1, characterized in that: Countersunk holes (101) for detecting riveting torque are distributed in an annular array on the upper surface of the cover plate (10).

4. The polyurethane top plate according to claim 1, characterized in that: An annular mounting ring (22) extends outward from the top of the outer wall of the outer bracket (20), and a plurality of through holes are provided on the mounting ring (22), and nuts (30) are provided in the through holes.

5. The polyurethane top plate according to claim 4, characterized in that: The connection between the outer bracket (20) and the mounting ring (22) is a downwardly concave arc structure.

6. The polyurethane top plate according to claim 1, characterized in that: The limiting ring (21) comprises a lower ring body connected to the outer bracket (20) and an inner ring body arranged at the edge of the lower ring body.

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