Bushing
By assembling multiple bushing units to form bushing modules, changing the raw materials of curved blocks in bushing units of different specifications, solving the problem that traditional bushings are difficult to achieve complex stiffness, and achieving high stiffness, low cost and high durability Bushing products.
Patent Information
- Application Number
- CN202411989704.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-02-14
AI Technical Summary
Traditional high-stiffness bushings are difficult to achieve multiple stiffnesses in the axial section, and existing equipment has large runner losses and high maintenance costs, and can only use two different rubbers, which limits the design and performance of the bushing.
The bushing module consisting of more than two bushing units is adopted to achieve the requirements of complex stiffness performance by changing the raw materials of arc blocks in bushing units of different specifications. The bushing unit includes arc blocks, inner arc blocks and outer arc blocks. The arc blocks are rubber parts and the inner and outer arc blocks are metal blocks. They meet different rigidity needs through different combinations and materials selection.
It achieves full satisfaction of complex stiffness performance, improves the ultimate destructive power and fatigue durability of the product, reduces investment and maintenance costs, and saves resources and costs.
Smart Images
Figure CN119435604A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of automobile parts, in particular to a bushing. Background Art
[0002] Bushing shock-absorbing products are widely used in automobiles, and are also used in motorcycles, washing machines, engineering vehicles and other industrial equipment that require shock absorption. When used in automobiles, they are mainly installed in the chassis, control arms, and some suspension structures to improve the handling and comfort of the equipment through vibration reduction and vibration isolation. With the continuous technological innovation and breakthroughs in the domestic automobile industry, and the rapid changes in other types of equipment manufacturing, automobiles and various types of equipment and home appliances that require rubber metal shock absorption have become diversified and diverse.
[0003] At present, the market generally needs bushings to meet more complex stiffness performance requirements. Traditional high-rigidity small bushings are all injection-molded by a rubber injection machine. If you want to achieve a variety of stiffness in the "axial section" and "different directions", you can only start from the structure, such as leaving gaps in local areas, or inserting fan-shaped metal sheets inside, etc. The smaller the bushing, the smaller the space for structural design optimization, and it is difficult to achieve complex stiffness performance requirements; currently there are also dual independent flow channels and dual cylinder equipment to inject two types of rubber into the product, but this type of equipment has a large flow channel loss, high investment and maintenance costs, and can only use two different rubbers. It can only make bushings with distinct hollow rubber main ribs in the structure, which has great limitations. Summary of the invention
[0004] The problem to be solved by the present invention is to provide a bushing, which is composed of more than two bushing units to form a bushing module. The manufacturer selects different combination methods and different arc block materials according to actual conditions.
[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a bushing, including a core, an outer ring and a bushing module arranged between the core and the outer ring, the bushing module includes more than two bushing units that can be spliced to form a circular ring, the bushing unit includes an arc block, an inner arc piece arranged on the inner side of the arc block, and an outer arc piece arranged on the outer side of the arc block; the arc block, the inner arc piece and the outer arc piece have the same central angle, the arc block is a rubber piece, and the inner arc piece and the outer arc piece are both metal sheets. Principle of use of the present invention: The present invention uses a plurality of bushing units to assemble to form a bushing module, and the raw materials of the arc blocks in bushing units of different specifications can be changed according to actual conditions, thereby fully meeting the requirements of complex stiffness performance.
[0006] As an improvement, the bushing unit is fan-shaped and includes three specifications. The central angles of the bushing units of the three specifications are 90°, 120° and 180° respectively.
[0007] As an improvement, the bushing module consists of four bushing units with a central angle of 90°, or three bushing units with a central angle of 120°, or two bushing units with a central angle of 180°, or one bushing unit with a central angle of 180° and two bushing units with a central angle of 90°.
[0008] As an improvement, a groove is provided on the outer side of the core, and the inner arc-shaped piece is arranged in the groove; the depth of the groove is 0.9±0.1mm.
[0009] As an improvement, the upper and lower parts of the arc block are both provided with arc grooves, the upper and lower parts of the bushing module are provided with a clamping groove formed by splicing two or more arc grooves, and a clamp matching the clamping groove is provided in the clamping groove.
[0010] As an improvement, the thickness of the inner arc-shaped sheet and the outer arc-shaped sheet is 0.9±0.1 mm; the height of the inner arc-shaped sheet is 3 mm-6 mm higher than the height of the outer arc-shaped sheet.
[0011] As an improvement, both ends of the outer ring are provided with inwardly folded edges, and the depth of the folded edges is 1.5mm-2mm.
[0012] The manufacturing method of the present invention comprises the following steps: (1) The inner arc sheet and the outer arc sheet with the same central angle are coated with glue and placed in the mold, and the mold is closed, pressurized and vulcanized, and then the edges are trimmed to form a bushing unit; (2) A groove with a width equal to the height of the inner arc-shaped sheet is opened on the outer surface of the core, and the bushing units that can be spliced to form a ring are inserted into the groove in sequence to form a bushing module; clamps are respectively put into the clamping grooves at the upper and lower parts of the bushing module; (3) Fold the round opening at any end of the outer ring to form a folded edge, and install the assembled bushing module and core into the outer ring so that one end of the outer arc block is against the folded edge; (4) Perform riveting on the un-folded end of the outer ring to form another folded edge, and make the folded edge butt against the other end of the outer arc block; (5) Reduce the diameter of the assembled bushing.
[0013] As an improvement, the inner arc-shaped piece and the outer arc-shaped piece are subjected to phosphating treatment before being assembled to form the bushing unit; the core and the outer ring are both installed into the bushing module after phosphating.
[0014] As an improvement, the bushing is soaked in long-lasting water-based anti-rust oil after assembly.
[0015] The beneficial effects of the present invention are: 1. The present invention adopts multiple bushing units to assemble into a bushing module, and the raw materials of the arc blocks in bushing units of different specifications can be changed according to actual conditions, thereby fully meeting the requirements of complex stiffness performance; 2. The present invention is composed of multiple bushing units, and the bonding surface is separated from the reduced diameter shell, so there is no damage to the bonding surface during the reduction process; 3. The present invention does not need to hollow out or add metal sheets in the arc block, which can increase the surface of force. The structural strength of the arc block is higher, the ultimate destructive force of the product is in direct proportion to the increase of the vertical surface of force, and the fatigue durability of the product can be significantly improved; 4. The present invention has low investment and maintenance costs, saving resources and costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0017] Figure 2 This is an exploded view of the present invention.
[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the bushing module.
[0019] Figure 4 Schematic diagram of the three-dimensional structure of the outer ring.
[0020] Figure 5 It is a schematic diagram of the combination of two bushing units with a central angle of 180°.
[0021] Figure 6 It is a schematic diagram of the combination of three bushing units with a central angle of 120°.
[0022] Figure 7 It is a schematic diagram of the combination of four bushing units with a central angle of 90°.
[0023] Explanation of the numbers in the figure: 1, core; 11, groove; 2, bushing module; 21, inner arc-shaped piece; 22, arc-shaped block; 221, clamp; 222, slot; 23, outer arc-shaped piece; 3, outer ring; 31, folded edge. Implementation
[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] like Figure 1 , 2As shown in Figures 3, 5, 6 and 7, a bushing comprises a core 1, an outer ring 3 arranged on the outside and a bushing module 2 arranged between the core 1 and the outer ring 3, wherein the bushing module 2 is composed of two or more bushing units that can be spliced to form a circular ring; the bushing unit is fan-shaped, and comprises an inner arc-shaped piece 21, an arc-shaped block 22 and an outer arc-shaped piece 23 from the inside to the outside, wherein the arc-shaped block 22 is a rubber piece, and the inner arc-shaped piece 21 and the outer arc-shaped piece 23 are both metal sheets; the central angles of the inner arc-shaped piece 21, the arc-shaped block 22 and the outer arc-shaped piece 23 are equal, and the bushing unit can be divided into different specifications according to the angle of the central angle, and the manufacturer can produce bushing units of different specifications according to the actual situation. In order to save costs, the bushing unit includes three specifications, one is a bushing unit with a central angle of 90°, the second is a bushing unit with a central angle of 120°, and the last is a bushing unit with a central angle of 180°. The central angles of the above three specifications all refer to the angles after the workpiece is reduced in diameter. Through the above three specifications of bushing units, manufacturers can combine them in four ways to form a bushing module 2: The first one is Figure 1 As shown, four bushing units with a central angle of 90° are combined into a bushing module 2; The second type Figure 1 As shown, three bushing units with a central angle of 120° are combined into a bushing module 2; The third type Figure 1 As shown, two bushing units with a central angle of 180° are combined into a bushing module 2; The fourth type is to form a bushing module 2 by combining a bushing unit with a central angle of 180° and two bushing units with a central angle of 90°.
[0026] Manufacturers can combine bushing modules 2 of different angles and sizes according to actual conditions, and they are diverse; at the same time, the rubber type of the arc block 22 can also be changed. By changing the angle combination and the material, the requirements of complex stiffness performance can be fully met; at present, in order to achieve the purpose of different stiffness in different directions in the radial section, radial hollowing or adding metal sheet structures is generally adopted. Compared with this, this solution changes the raw materials of the arc block 22 in the bushing unit, resulting in an increase in the amount of rubber, thereby increasing the effective surface when subjected to force, making the overall structural strength higher, the ultimate destructive force of the product increases in direct proportion to the increase in the vertical surface of the force, and the fatigue durability of the product is significantly improved; at the same time, each bushing unit can be assembled only after vulcanization to achieve complex stiffness requirements. Compared with the dual independent flow channels and dual material cylinder equipment required for split injection vulcanization, the assembly method of the present invention wastes less rubber, and has lower equipment investment and maintenance costs.
[0027] The arc block 22 is provided with arc grooves at the top and bottom, and the upper and lower parts of the bushing module 2 are provided with a clamping groove 222 formed by combining more than two arc grooves and a clamp 221 matched with the clamping groove 222 to strengthen the connection between the bushing module 2 and the core 1.
[0028] like Figure 2 , 4 As shown, the core 1 is provided with a groove 11 on the outside, the inner arc-shaped sheet 21 is provided on the groove 11 and the width of the groove 11 is equal to the height of the inner arc-shaped sheet 21, the height of the inner arc-shaped sheet 21 is 3mm-6mm higher than the height of the outer arc-shaped sheet 23, the depth of the groove 11 is 0.9±0.1mm, and the thickness of the inner arc-shaped sheet 21 and the outer arc-shaped sheet 23 is 0.9±0.1mm. The inner walls of the outer ring 3 are provided with inwardly folded edges 31 at both ends, the folded edges 31 are perpendicular to the inner walls of the outer ring 3 and have a depth of 1.5mm-2mm.
[0029] The manufacturing method of the present invention comprises the following steps: (1) Phosphating treatment is performed on the inner arc-shaped sheet 21 and the outer arc-shaped sheet 23 to be processed. If higher anti-corrosion requirements are required, zinc-nickel plating can be performed on the inner arc-shaped sheet 21 and the outer arc-shaped sheet 23; (2) The inner arc-shaped piece 21 and the outer arc-shaped piece 23 of the bushing unit of the same specification are coated with glue respectively and then put into the mold, and the mold is closed, pressurized and vulcanized, and then the edges are trimmed to form the bushing unit; (3) A groove 11 having a width the same as the height of the inner arc-shaped sheet 21 is opened on the outer surface of the core 1 and the core 1 is phosphated, and the bushing units that can be spliced to form a ring are inserted into the groove 11 in sequence to form the bushing module 2; (4) Put the clamps 221 into the slots 222 at the upper and lower parts of the bushing module 2 respectively to strengthen the connection between the bushing module 2 and the core 1; (5) After the round opening at any end of the outer ring 3 is folded 31 to form an inner folded edge 31, the inner folded edge 31 is phosphated, and then the assembled bushing module 2 and core 1 are installed into the outer ring 3 so that one end of the outer arc-shaped piece 23 is against the folded edge 31; (6) The end of the outer ring 3 that has not been processed by the folding edge 31 is subjected to a riveting process to form another folding edge 31, and the folding edge 31 is abutted against the other end of the outer arc block 22 to strengthen the combination of the outer ring 3 and the bushing module 2 to form a bushing; (7) After the assembled bushing is reduced in diameter, soak it in water-based anti-rust oil to extend its service life.
Claims
1. A bushing, comprising a core, an outer ring and a bushing module arranged between the core and the outer ring, characterized in that: The bushing module includes more than two bushing units that can be spliced to form a circular ring, and the bushing unit includes an arc block, an inner arc piece arranged on the inner side of the arc block, and an outer arc piece arranged on the outer side of the arc block; the arc block, the inner arc piece and the outer arc piece have the same central angle, the arc block is a rubber piece, and the inner arc piece and the outer arc piece are both metal sheets.
2. The bushing according to claim 1, characterized in that: The bushing unit is fan-shaped and includes three specifications. The central angles of the bushing units of the three specifications are 90°, 120° and 180° respectively.
3. The bushing according to claim 2, characterized in that: The bushing module is composed of four bushing units with a central angle of 90°, or three bushing units with a central angle of 120°, or two bushing units with a central angle of 180°, or one bushing unit with a central angle of 180° and two bushing units with a central angle of 90°.
4. The bushing according to claim 1, characterized in that: The outer side of the core is provided with a groove, and the inner arc-shaped piece is arranged in the groove; the depth of the groove is 0.9±0.1mm.
5. The bushing according to claim 1, characterized in that: The upper and lower parts of the arc block are both provided with arc grooves, and the upper and lower parts of the bushing module are provided with clamping grooves formed by splicing more than two arc grooves, and the clamping groove is provided in the clamping groove.
6. The bushing according to claim 1, characterized in that: The thickness of the inner arc-shaped sheet and the outer arc-shaped sheet is 0.9±0.1 mm; the height of the inner arc-shaped sheet is 3 mm-6 mm higher than the height of the outer arc-shaped sheet.
7. The bushing according to claim 1, characterized in that: Both ends of the outer ring are provided with inwardly folded edges, and the depth of the folded edges is 1.5mm-2mm.
8. A method for manufacturing a bushing as claimed in claim 1, characterized in that: The following steps are involved: (1) The inner arc sheet and the outer arc sheet with the same central angle are coated with glue and placed in the mold, and the mold is closed, pressurized and vulcanized, and then the edges are trimmed to form a bushing unit; (2) A groove with a width equal to the height of the inner arc-shaped sheet is opened on the outer surface of the core, and the bushing units that can be spliced to form a ring are inserted into the groove in sequence to form a bushing module; clamps are respectively put into the clamping grooves at the upper and lower parts of the bushing module; (3) Fold the round opening at any end of the outer ring to form a folded edge, and install the assembled bushing module and core into the outer ring so that one end of the outer arc block is against the folded edge; (4) Perform riveting on the un-folded end of the outer ring to form another folded edge, and make the folded edge butt against the other end of the outer arc block; (5) Reduce the diameter of the assembled bushing.
9. The method for manufacturing the bushing according to claim 8, characterized in that: The inner arc-shaped sheet and the outer arc-shaped sheet are phosphating treated before being assembled into the bushing unit; the core and the outer ring are both installed into the bushing module after phosphating.
10. The method for manufacturing a bushing according to claim 8, characterized in that: After assembly, the bushing is soaked in long-lasting water-based anti-rust oil.