Upper supporting structure of rear shock absorber
By designing a rear shock absorber upper support structure that uses a plastic wrap process to process the inner skeleton of the bushing and arranges the first boss and the second boss, the prior art cannot meet the shock absorber requirements after the weight of the electrified vehicle is increased. The problem of this achieves lightweight, high intensity, reduced abnormal noise and improved NVH performance.
Patent Information
- Application Number
- CN202520086803.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2035-01-15
AI Technical Summary
The support structure on the existing rear shock absorber cannot meet the needs of increased weight of a fully electrified vehicle, resulting in shock absorption failure and support reduction, affecting the stability and handling of the vehicle.
A rear shock absorber upper support structure is designed, and the inner frame of the bushing is processed using the plastic wrap process to improve its strength and lightweight, and the abnormal noise is reduced by the arrangement of the first boss and the second boss, thereby improving NVH performance.
It achieves lightweight, high strength, reduced abnormal noise, and improved NVH performance, meeting the shock absorption needs of electrified cars after the weight increases.
Smart Images
Figure CN222496005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile shock absorbers, in particular to an upper supporting structure of a rear shock absorber. Background Art
[0002] Automobile shock absorber, also known as shock absorber, is a device used to reduce vibration. Its main function is to suppress the vibration when the spring rebounds after shock absorption and the impact vibration of the road surface, so as to improve the comfort and smoothness of the car during driving. The rear shock absorber is the shock absorber installed in the rear suspension system of the car. The upper support structure is the connection between the shock absorber and the frame.
[0003] Due to the full electrification of vehicles, the weight of the whole vehicle has increased, making the existing rear upper support products unable to meet the requirements. The current products are heavy and costly. This will cause the vehicle's shock absorption to fail during normal driving, unable to suppress the impact of the ground, and reduce the support force of the shock absorber on the vehicle, affecting the stability and maneuverability of the vehicle. Utility Model Content
[0004] In order to solve the problems existing in the background technology, the utility model proposes an upper support structure of a rear shock absorber.
[0005] A rear shock absorber upper support structure comprises an outer sleeve, two brackets are fixedly mounted on the outer wall of the outer sleeve, a bushing assembly is arranged inside the outer sleeve, an upper cover plate is arranged on the top of the outer sleeve, a lower cover plate is fixedly mounted on the inner wall of the lower half of the outer sleeve, and the upper cover plate and the lower cover plate are clamped on the upper side and the lower side of the bushing assembly respectively.
[0006] Based on the above, the bushing assembly includes a bushing outer frame, a rubber body is fixedly installed on the inner side of the bushing outer frame, and a bushing inner frame is fixedly installed at the center of the rubber body.
[0007] Based on the above, the inner frame of the bushing is composed of a core body and a plastic body. The core body is an iron core body, and a galvanized layer is arranged on its surface. The plastic body is PA66+30gf.
[0008] Based on the above, the top and the bottom of the rubber body are both provided with a first boss and a second boss in an array, the first boss and the second boss are spaced apart, and the length of the first boss is greater than the length of the second boss.
[0009] Based on the above, the upper cover plate is fixedly mounted on the outer sleeve by rivets.
[0010] Based on the above, a first annular groove and an annular protrusion are provided on the inner wall of the bottom end of the outer sleeve, the first annular groove is located on the upper side of the annular protrusion, and a second annular groove is provided on the outer wall of the bottom end of the outer sleeve.
[0011] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model processes the inner skeleton of the bushing through the plastic coating process, thereby improving the strength of the inner skeleton of the bushing, achieving lightweight and saving costs; and through the arrangement of the first boss and the second boss, reducing abnormal noise and improving NVH performance; and through the arrangement of the first annular groove, the annular protrusion and the second annular groove, the outer sleeve and the shock absorber group are more compatible; it has the advantages of lightweight, high strength, reduced abnormal noise and improved NVH performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0013] Figure 2 It is a schematic diagram of the top structure of the utility model.
[0014] Figure 3 It is a schematic diagram of the main cross-sectional structure of the utility model.
[0015] Explanation of the reference numerals: 100, outer sleeve; 200, bracket; 300, bushing assembly; 400, upper cover plate; 500, lower cover plate; 101, first annular groove; 102, annular protrusion; 103, second annular groove; 301, bushing outer skeleton; 302, rubber body; 303, bushing inner skeleton; 304, first boss; 305, second boss; 3031, core body; 3032, plastic body; 401, rivet. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] like Figure 1-Figure 3 As shown, a rear shock absorber upper support structure includes an outer sleeve 100, two brackets 200 are fixedly installed on the outer wall of the outer sleeve 100, a bushing assembly 300 is arranged inside the outer sleeve 100, and an upper cover plate 400 is arranged on the top of the outer sleeve 100, and the upper cover plate 400 is fixedly installed on the outer sleeve 100 through rivets 401. A lower cover plate 500 is fixedly installed on the inner wall of the lower half of the outer sleeve 100, and the upper cover plate 400 and the lower cover plate 500 are clamped on the upper side and the lower side of the bushing assembly 300 respectively.
[0018] When in use, the bushing assembly 300 includes a bushing outer frame 301. The bushing outer frame 301 is made of PA66+30gf material. Its structural strength is equivalent to that of the iron bushing outer frame 301, and corrosion is eliminated. A rubber body 302 is fixedly installed on the inner side of the bushing outer frame 301, and a bushing inner frame 303 is fixedly installed at the center of the rubber body 302. The bushing inner frame 303 is made by a plastic coating process. The bushing inner frame 303 consists of a core 3031 and a plastic body 3032. The core 3031 is made of iron, and a galvanized layer is provided on its surface to prevent it from rusting and increase its service life; the plastic body 3032 is made of PA66+30gf material. After adopting the plastic coating process, the structural strength of the bushing inner frame 303 is increased by 5% compared with the iron bushing inner frame 303, and the weight is reduced, thereby achieving lightweight and reducing costs.
[0019] The top and bottom of the rubber body 302 are both provided with a first boss 304 and a second boss 305 in an array, the first boss 304 and the second boss 305 are arranged at intervals, and the length of the first boss 304 is greater than the length of the second boss 305. The rubber body 302 is attached to the upper cover plate 400 and the lower cover plate 500 through the first boss 304. The axial stiffness of the front reducer upper support is greatly improved, and at the same time, the abnormal sound caused by the impact of the rubber body 302 with the upper cover plate 400 and the lower cover plate 500 is eliminated, and the surface-to-surface contact is changed to surface-to-point contact, thereby improving its NVH performance.
[0020] Specifically, a first annular groove 101 and an annular protrusion 102 are provided on the inner wall at the bottom end of the outer sleeve 100, the first annular groove 101 is located on the upper side of the annular protrusion 102, and a second annular groove 103 is provided on the outer wall at the bottom end of the outer sleeve 100. The outer sleeve 100 is assembled with the dust cover of the shock absorber through the second annular groove 103; the outer sleeve 100 is assembled with the spring of the shock absorber through the first annular groove 101 and the annular protrusion 102, so that the outer sleeve 100 and the shock absorber are more compatible.
[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A rear shock absorber upper support structure, characterized in that: It includes an outer sleeve, two brackets are fixedly installed on the outer wall of the outer sleeve, a bushing assembly is arranged inside the outer sleeve, an upper cover plate is arranged on the top of the outer sleeve, a lower cover plate is fixedly installed on the inner wall of the lower half of the outer sleeve, and the upper cover plate and the lower cover plate are respectively clamped on the upper side and the lower side of the bushing assembly.
2. The rear shock absorber upper support structure according to claim 1, characterized in that: The bushing assembly comprises a bushing outer frame, a rubber body is fixedly installed on the inner side of the bushing outer frame, and a bushing inner frame is fixedly installed at the center of the rubber body.
3. The rear shock absorber upper support structure according to claim 2, characterized in that: The bushing inner frame comprises a core body and a plastic body, wherein the core body is an iron core body and a galvanized layer is arranged on the surface thereof, and the plastic body is PA66+30gf.
4. The rear shock absorber upper support structure according to claim 2, characterized in that: The top and the bottom of the rubber body are both provided with a first boss and a second boss in an array, the first boss and the second boss are spaced apart, and the length of the first boss is greater than the length of the second boss.
5. The rear shock absorber upper support structure according to claim 2, characterized in that: The upper cover plate is fixedly mounted on the outer sleeve by rivets.
6. The rear shock absorber upper support structure according to claim 1, characterized in that: A first annular groove and an annular protrusion are arranged on the inner wall of the bottom end of the outer sleeve, the first annular groove is located on the upper side of the annular protrusion, and a second annular groove is opened on the outer wall of the bottom end of the outer sleeve.