Automobile torsion damper

Abstract

The utility model discloses an automobile torsion damper, which mainly comprises a mass ring, the inner framework is coaxially arranged in the mass ring; the rubber body is bonded between the inner wall of the mass ring and the outer wall of the inner framework; a plurality of reinforcing pin bodies are inserted into the rubber body, and gaps exist between the reinforcing pin bodies and the mass ring and between the reinforcing pin bodies and the inner framework. According to the utility model, when the transmission speed of the automobile suddenly changes, the automobile cannot violently shake, dynamic balance is realized, the product performance is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production equipment, in particular to an automobile torsional shock absorber. Background Art

[0002] As people's requirements for automobile riding comfort are getting higher and higher, the function of automobile torsional dampers is further improved. Its main function is to reduce the torsional stiffness of the joint between the engine crankshaft and the transmission system, reduce the natural frequency of torsional vibration of the transmission system, increase the torsional damping of the transmission system, suppress the amplitude corresponding to torsional resonance, attenuate transient torsional vibration caused by impact, control the torsional vibration of the clutch and transmission shaft system when the power steering assembly is idling, eliminate the idling noise of the transmission and the torsional vibration and noise of the main reducer and transmission, alleviate the torsional impact load of the transmission system under non-steady state, and improve the smoothness of the clutch connection.

[0003] Current shock absorbers, such as the multi-stage rubber torsional vibration damper disclosed in patent number CN113108016A, include a shock absorber outer shell and a shock absorber inner shell. The shock absorber outer shell is connected to the engine flywheel to receive the torque transmitted by the engine. The shock absorber inner shell is connected to the transmission system components behind it through the inner hole spline to transmit the torque. The shock absorber outer shell is sleeved on the outside of the shock absorber inner shell. The outer ring of the shock absorber outer shell and the inner hole of the shock absorber inner shell are placed concentrically. A shock absorbing device is arranged between the shock absorber outer shell and the shock absorber inner shell.

[0004] This type of shock absorber is a one-time molding structure, which is unbalanced and has a poor shock-absorbing structure. It is prone to shaking when used and has shortcomings. Utility Model Content

[0005] The utility model provides an automobile torsion damper in order to avoid the deficiencies in the prior art.

[0006] The utility model solves the technical problem by adopting the following technical solution: an automobile torsional damper, comprising:

[0007] Quality ring;

[0008] An inner frame coaxially disposed within the mass ring;

[0009] A rubber body bonded between the inner wall of the mass ring and the outer wall of the inner frame;

[0010] A plurality of reinforcing pins are inserted into the rubber body, and gaps exist between the reinforcing pins, the mass ring and the inner frame.

[0011] In several embodiments, the rubber body includes a base layer that is fitted on the inner wall of the mass ring and the outer wall of the inner skeleton, and there is a gap between the two base layers.

[0012] In several embodiments, a plurality of connecting bodies and reinforcing bodies are uniformly arranged between the two base layers, the reinforcing bodies are arranged between two adjacent connecting bodies, and the reinforcing pin bodies are inserted into the reinforcing bodies.

[0013] In several embodiments, a plurality of protruding bodies are arranged on both of the two base layers, the two protruding bodies are symmetrically arranged between two distant connecting bodies, the two protruding bodies will come into contact during the radial movement, and the protruding body is only connected to one base layer.

[0014] In several embodiments, the reinforcing pin body includes a body portion and head portions arranged at both ends of the body portion, the outer diameter of the head portion is greater than the outer diameter of the body portion, the body portion is located inside the reinforcing body, and the head portion is located outside the reinforcing body.

[0015] In several embodiments, a drilling portion is detachably arranged on at least one of the head portions, the end of the drilling portion away from the head portion is conical, and the drilling portion is used for drilling into the reinforcing body.

[0016] In several embodiments, a balance groove is arranged on the quality ring, and the balance groove does not penetrate through the quality ring.

[0017] In several embodiments, a plurality of connection holes are arranged on the inner skeleton.

[0018] And, the production process of the above-mentioned automotive torsional shock absorber includes the following steps:

[0019] S100, load the quality ring, inner skeleton and rubber sheet into a mold and perform vulcanization treatment to form a shock absorber blank;

[0020] S200, perform trimming on the shock absorber blank and use an air gun to drive the reinforcing pin bodies into the reinforcing bodies;

[0021] S300, perform necking processing on the shock absorber blank processed in S200, and the necking processing is performed using a necking device;

[0022] S400, perform drilling on the shock absorber blank processed in S300, and the drilling is performed on a machine tool;

[0023] S500, place the shock absorber blank processed in S400 into a dynamic balance detection device, perform dynamic balance and damping detection, after detecting the unbalanced position, open a balance groove at the corresponding position through a punching device, remove the weight at the unbalanced point, and complete the production of the shock absorber.

[0024] In several embodiments, in step S200, the reinforcing pin body needs to be driven in when the temperature of the shock absorber blank is between 40°C and 60°C. Before driving in, the drilling part needs to be assembled to the head, and after the reinforcing pin is driven in, the drilling part is removed from the head.

[0025] The beneficial effects of the present utility model are as follows:

[0026] 1. Through the structural design of the rubber body combined with the reinforcing pin body, the present utility model ensures that when the driving speed of the vehicle suddenly changes, such as from high speed to low speed or from low speed to high speed, the vehicle will not experience severe jitter, and reduces the axial and radial displacements between the rubber body and each component.

[0027] 2. The present utility model first processes and forms the shock absorber blank, and then drills the inner skeleton, ensuring that the position of the central hole of the product is centered. When assembled to the vehicle, it runs smoothly without jitter.

[0028] 3. The reinforcing pin body of the present utility model is driven in by an air gun, with good forming and connecting effects. Through the design of the drilling part, it is convenient to be driven in and fixed quickly and stably, and can be disassembled at the same time to ensure dynamic balance.

[0029] 4. The shock absorber blank of the present utility model is heat-shrunk in diameter, which not only improves the durability of the product by adjusting the stress state between rubber molecules, but also enhances its performance and reliability by ensuring the structural shape of the product.

[0030] 5. Through dynamic balance detection and damping detection, the present utility model opens balance grooves at the unbalanced positions, and the balance grooves do not penetrate the mass ring to achieve dynamic balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are only for the purpose of illustrating the selected embodiments and do not represent all possible embodiments, and should not be considered as a limitation on the scope of the present utility model.

[0032] Figure 1 Schematically shows the overall structure of the vehicle torsional shock absorber in Embodiment 1;

[0033] Figure 2 Schematically shows Figure 1 the front view plane structure of

[0034] Figure 3 Schematically shows Figure 1 the structure of the reinforcing pin body in

[0035] Figure 4 Schematically shows the overall structure of the reinforcing pin body in Embodiment 2;

[0036] Figure 5 Schematically showsFigure 4 The explosion structure of the reinforcement pin body. Specific embodiments

[0037] Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] As Figures 1-3 shown, the automotive torsional damper in this embodiment mainly includes a mass ring 10, an inner skeleton 20 coaxially arranged inside the mass ring 10, a rubber body 30 bonded between the inner wall of the mass ring 10 and the outer wall of the inner skeleton 20, and a plurality of reinforcement pin bodies 40 inserted into the rubber body 30. There are gaps between the reinforcement pin bodies 40 and both the mass ring 10 and the inner skeleton 20.

[0041] Specifically, the rubber body 30 includes a base layer 31 fitted on the inner wall of the mass ring 10 and the outer wall of the inner skeleton 20, and there is a gap between the two base layers 31.

[0042] Among them, a plurality of connecting bodies 32 and reinforcing bodies 33 are evenly arranged between the two base layers 31. The reinforcing body 33 is arranged between two adjacent connecting bodies 32. The reinforcement pin body 40 is inserted into the reinforcing body 33. The reinforcing body 33 can be an integrally closed structure, formed by piercing through the insertion of the reinforcement pin body 40, or two concave structures, forming a space for accommodating the reinforcement pin body 40 between them.

[0043] Moreover, a plurality of protruding bodies 34 are arranged on both of the two base layers 31. The two protruding bodies 34 are a pair and are symmetrically arranged between two remote connecting bodies 32. The two protruding bodies 34 will come into contact during radial movement, and the protruding body 34 is only connected to one base layer 31. The two protruding bodies 34 do not come into contact under normal conditions and are generally in a convex shape. When the mass ring 10 and the inner skeleton 20 undergo relative radial displacement, basic extrusion will occur between the two protruding bodies 34.

[0044] Here, the reinforcing pin body 40 includes a body 41 and a head 42 arranged at both ends of the body 41. The outer diameter of the head 42 is larger than the outer diameter of the body 41. The body 41 is located inside the reinforcing body 33, and the head 42 is located outside the reinforcing body 33, generally in an I-shape. Therefore, a reinforcing restriction is formed on the reinforcing body 33 and the rubber body, reducing axial and radial displacements.

[0045] Furthermore, a balancing groove 11 is provided on the mass ring 10 , and the balancing groove 11 does not penetrate the mass ring 10 . A plurality of connecting holes 21 are provided on the inner frame 20 , mainly including a central hole in the center and a plurality of small holes surrounding the central hole.

[0046] The above-mentioned automobile torsional damper is mainly produced by the following steps:

[0047] S100, the mass ring 10, the inner frame 20 and the rubber sheet are assembled into a mold and vulcanized to form a shock absorber embryo.

[0048] S200, trimming the shock absorber embryo, and when the shock absorber embryo is not cooled, specifically when the temperature is 40-60° C., using an air gun to drive the reinforcing pin 40 into the reinforcing body 33 to complete the fixation.

[0049] S300, performing a diameter reduction process on the shock absorber embryo body processed in S200, wherein the diameter reduction process is performed using a diameter reduction device.

[0050] S400, drilling the shock absorber embryo processed in S300, wherein the drilling is performed on a machine tool.

[0051] S500, placing the shock absorber embryo processed in S400 into a dynamic balancing detection device for dynamic balancing and damping detection. After the unbalanced position is detected, a balancing groove 11 is opened at the corresponding position by a punching device to remove the weight of the unbalanced point, thereby completing the production of the shock absorber.

[0052] Of course, the shock absorber can also be galvanized to improve the corrosion resistance of the product.

[0053] Example 2

[0054] In this embodiment, the reinforcing pin body 40 is further provided with a drilling portion 43, and at least one of the heads 42 is detachably provided with the drilling portion 43. The drilling portion 43 is tapered at one end away from the head 42, and the drilling portion 43 is used to drill into the reinforcing body 33. The drilling portion 43 is a conical sleeve structure, and an internal thread is provided on its inner wall. The two heads 42 are both provided with the same external thread, and the two threads are screwed together.

[0055] The above-mentioned automobile torsional damper is mainly produced by the following steps:

[0056] S100. Place the quality ring 10, the inner skeleton 20 and the rubber sheet into a mold and perform vulcanization treatment to form a shock absorber blank.

[0057] S200. Trim the shock absorber blank. When the shock absorber blank is not cooled, specifically at a temperature of 40 - 60°C, assemble the drilling part 43 to the head 42, and use an air gun to drive the strengthening pin body 40 into the reinforcing body 33 to complete the fixation. Utilize the drilling part 43 to improve the piercing effect. After driving is completed, remove the drilling part 43 from the head 42.

[0058] S300. Perform necking processing on the shock absorber blank processed in S200. The necking processing is carried out using necking equipment.

[0059] S400. Perform drilling processing on the shock absorber blank processed in S300. The drilling processing is carried out on a machine tool.

[0060] S500. Place the shock absorber blank processed in S400 into a dynamic balance detection device to perform dynamic balance and damping detection. After detecting the unbalanced position, use a punching device to open a balance groove 11 at the corresponding position to remove the weight at the unbalanced point and complete the production of the shock absorber.

[0061] All the ways described in this article can be carried out in any suitable order. Any and all examples used, or the exemplary language provided in this article (such as "for example") are only to better illustrate the present invention and do not limit the scope of the present invention, unless otherwise claimed. The language in the detailed description should not be construed as indicating any essential elements for practicing the present invention that are not claimed.

[0062] The present invention describes preferred embodiments, including the best ways known to the inventors for practicing the present invention. Of course, those skilled in the art can clearly see the variations of these preferred embodiments. The inventors envision that those skilled in the art can use these variations as appropriate. The inventors point out that the present invention can be implemented in other ways different from those specifically described herein. Therefore, the present invention includes all improvements included in the gist and scope of the present invention defined by the claims. Moreover, unless otherwise stated or clearly contradictory in content, the present invention includes any of the above elements and all possible variations thereof.

Claims

1. An automotive torsional shock absorber, characterized in that, Comprising: A quality ring (10); An inner skeleton (20) coaxially arranged inside the quality ring (10); A rubber body (30) bonded between the inner wall of the quality ring (10) and the outer wall of the inner skeleton (20); A plurality of reinforcing pin bodies (40) are inserted into the rubber body (30), and there are gaps between the reinforcing pin bodies (40) and the quality ring (10) as well as the inner skeleton (20).

2. The automotive torsional damper according to claim 1, characterized in that, The rubber body (30) includes a base layer (31) fittingly arranged on the inner wall of the quality ring (10) and the outer wall of the inner skeleton (20), and there is a gap between the two base layers (31).

3. The automotive torsional damper according to claim 2, characterized in that, A plurality of connecting bodies (32) and reinforcing bodies (33) are evenly arranged between the two base layers (31). The reinforcing bodies (33) are arranged between two adjacent connecting bodies (32), and the reinforcing pin bodies (40) are inserted into the reinforcing bodies (33).

4. A vehicle torsional damper according to claim 3, characterized in that, A plurality of protruding bodies (34) are arranged on both of the two base layers (31). The two protruding bodies (34) are symmetrically arranged between two distant connecting bodies (32). The two protruding bodies (34) will come into contact during the radial movement, and each protruding body (34) is only connected to one base layer (31).

5. An automotive torsional shock absorber according to claim 4, characterized in that, The reinforcing pin body (40) includes a body part (41) and head parts (42) arranged at both ends of the body part (41). The outer diameter of the head parts (42) is larger than that of the body part (41). The body part (41) is located inside the reinforcing body (33), and the head parts (42) are located outside the reinforcing body (33).

6. An automotive torsional shock absorber according to claim 5, characterized in that, A drilling part (43) is detachably arranged on at least one of the head parts (42). One end of the drilling part (43) facing away from the head part (42) is conical, and the drilling part (43) is used for drilling into the reinforcing body (33).

7. A vehicle torsional damper according to claim 1, characterized in that, A balance groove (11) is arranged on the quality ring (10), and the balance groove (11) does not penetrate through the quality ring (10).

8. A vehicle torsional damper according to claim 1, characterized in that, A plurality of connection holes (21) are arranged on the inner skeleton (20).

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