A combined damper

Abstract

This utility model discloses a combined damper, comprising: at least two damper halves, which are axially spliced ​​to form an axisymmetric cylindrical structure; the interior of each damper halves consists of a low-carbon steel counterweight, and the exterior is covered with a rubber layer; the splicing surfaces of the damper halves are provided with a mating structure, forming a clamping groove in the middle of the outer side after splicing, for installing a damper clamp; the inner surface of each damper halves is provided with rubber ribs, which are interference-fitted with the shaft of the drive half-shaft. This utility model solves the problems of difficult assembly and inconvenient maintenance of existing integrated dampers in compact spaces. This damper is composed of a multi-symmetrical structure, fixed to the shaft by a clamping groove in the middle, and the rubber ribs on the inner surface enhance adhesion. During assembly, it can be press-fitted after the ball cage to avoid obstructing the protective sleeve; during maintenance, there is no need to disassemble the ball cage, significantly improving assembly efficiency and maintainability.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a combined damper. Background Technology

[0002] As modern automobiles become increasingly feature-rich and their chassis structures more compact—such as with rear-wheel steering, air suspension, and superior suspension systems (double wishbone, multi-link)—the drive shafts are designed to be more compact, often with shorter overall lengths or limited space. This means dampers can only be mounted on the shaft near one side of the bushing, rather than in the center. With existing integrated dampers, if the shaft is too short, or if the OEM requires the damper to be mounted very close to one side of the bushing, the bushing cannot be moved to one side during the pressing process of the outer or inner CV joint. This results in significant deformation of the bushing during pressing, potentially leading to over-compression, scratches, and other quality issues. Furthermore, the clamps at the pressing station, which were originally designed to hold the shaft vertically for stability, cannot hold it due to the short shaft and space occupied by the damper, causing instability in the pressing process and resulting in quality problems.

[0003] Meanwhile, if the integrated damper needs to be disassembled after assembly, the ball cage at least one end of the entire half shaft must be disassembled and the damper pulled out axially. Disassembly is cumbersome and will damage the pressing force of the inner star wheel and shaft. Therefore, it is not maintainable and the entire half shaft can only be replaced. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this application proposes a combined damper to solve the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A combined damper, comprising:

[0007] At least two damper halves, which are spliced ​​together along the axial direction to form an axisymmetric cylindrical structure;

[0008] The damper half has a low-carbon steel counterweight inside and is covered with a rubber layer on the outside.

[0009] The splicing surface of the damper half is provided with a mating structure, and after splicing, a clamp groove is formed in the middle of the outer side for installing the damper clamp.

[0010] The inner surface of the damper half is provided with rubber ribs, and the rubber ribs are interference-fitted with the shaft of the drive half shaft.

[0011] As a further technical solution of this utility model: the damper half is a two-half structure, symmetrically divided along the axial direction, and spliced ​​together to form a complete cylindrical shape.

[0012] As a further technical solution of this utility model: the clamp groove is located in the middle part of the outer surface of the damper, and its width matches the cross-sectional dimensions of the damper clamp, and is used to fix the damper and the shaft by the clamping force of the clamp.

[0013] As a further technical solution of this utility model: the rubber strips are evenly distributed circumferentially along the inner surface of the damper, and the cross-section is semi-circular or trapezoidal. The adhesion force between the damper and the shaft is increased by interference compression deformation.

[0014] As a further technical solution of this utility model: the thickness of the low carbon steel counterweight accounts for 60%-80% of the overall thickness of the damper, and is used to adjust the natural frequency and total weight of the drive half shaft.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] 1. No damper obstructs the press-fitting of the ball cage, preventing excessive deformation of the sheath and improving assembly stability;

[0017] 2. During maintenance, the damper can be replaced simply by removing the clamps, without disassembling the ball cage, thus reducing maintenance costs;

[0018] 3. Adapts to whole-shaft spraying process, simplifying the process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a conventional damper.

[0020] Figure 2 This is a cross-sectional view of a conventional damper.

[0021] Figure 3 This is a schematic diagram of the installation of a conventional damper.

[0022] Figure 4 This is a schematic diagram of the structure of this utility model.

[0023] Figure 5 This is a cross-sectional view of the present invention.

[0024] In the diagram: 1-Damper half, 2-Clamp groove, 3-Damper clamp, 4-Low carbon steel counterweight, 5-Rubber layer, 6-Rubber reinforcing strip. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 4-5 As shown, a combined damper includes:

[0027] At least two damper halves 1 are spliced ​​axially to form an axisymmetric cylindrical structure; the interior of each damper halves 1 is a low-carbon steel counterweight 4, and the exterior is covered with a rubber layer 5; the splicing surface of each damper halves 1 is provided with a mating structure, and after splicing, a clamp groove 2 is formed in the middle of the outer side for installing a damper clamp 3; the inner surface of each damper halves 1 is provided with rubber ribs 6, and the rubber ribs 6 are interference-fitted with the shaft of the drive half shaft.

[0028] The assembly process is as follows:

[0029] 1. Sheaths, small clamps, and shaft retaining springs are installed on both sides of the shaft.

[0030] 2. Vertically press-fitted outer ball cage;

[0031] 3. Vertically press-fitted inner ball cage;

[0032] 4. Inject grease into the sheath and tighten all clamps;

[0033] 5. Spray painting of the entire drive half-shaft;

[0034] 6. Install the combined damper on the shaft and tighten the damper clamps.

[0035] The advantages of this design are as follows:

[0036] 1. It is suitable for compact automotive drive half-shafts, such as those with shorter shafts. During the press-fitting of the inner and outer CV joints, since there is no damper occupying space, the sheath will not suffer from excessive compression deformation or scratches during the press-fitting process.

[0037] 2. It is suitable for compact automotive drive half shafts, such as those with shorter shafts. During the press-fitting of the inner and outer ball joints, since there is no damper occupying space, the grippers can effectively hold the shaft, ensuring press-fitting stability.

[0038] 3. It has excellent maintainability. If the damper in the half shaft of the car needs to be replaced, the damper can be removed by disassembling the damper clamp, and then the combined damper can be installed and the clamp tightened. It is not even necessary to remove the half shaft from the whole vehicle.

[0039] 4. Since the clamp is installed in the middle of the damper, there is no need for rubber protrusions on both sides, which can effectively reduce the length of the damper and make the damper more compact.

[0040] 5. The damper structure of this utility model is suitable for spraying the drive half shaft and the whole shaft, eliminating the need to spray individual parts and then assemble them, which simplifies the spraying process and reduces spraying costs.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment have been appropriately combined to form other embodiments that are easy for those skilled in the art to understand.

Claims

1. A combined damper, characterized in that include: At least two damper halves, which are spliced ​​together along the axial direction to form an axisymmetric cylindrical structure; The damper half has a low-carbon steel counterweight inside and is covered with a rubber layer on the outside. The splicing surface of the damper half is provided with a mating structure, and after splicing, a clamp groove is formed in the middle of the outer side for installing the damper clamp. The inner surface of the damper half is provided with rubber ribs, and the rubber ribs are interference-fitted with the shaft of the drive half shaft.

2. A combined damper according to claim 1, characterized in that The damper half is a two-part structure, symmetrically divided along the axial direction, and spliced ​​together to form a complete cylindrical shape.

3. A combined damper according to claim 2, characterized in that The clamp groove is located in the middle of the outer surface of the damper, and its width matches the cross-sectional dimensions of the damper clamp. It is used to fix the damper and the shaft by the clamping force of the clamp.

4. A combined damper according to claim 3, characterized in that, The rubber reinforcing strips are evenly distributed circumferentially along the inner surface of the damper, with a semi-circular or trapezoidal cross-section. The adhesion force between the damper and the shaft is increased through interference compression deformation.

5. The combination damper of claim 1 wherein, The thickness of the low-carbon steel counterweight accounts for 60%-80% of the overall thickness of the damper, and is used to adjust the natural frequency and total weight of the drive half-shaft.

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