A clutch with an elastic compensation device

Abstract

The present invention relates to the technical field of clutches, and discloses a clutch with an elastic compensation device, which includes a pressure plate, a diaphragm spring, and a support ring. The diaphragm spring is connected to the pressure plate by rivets; the support ring is coaxially arranged with the pressure plate, and the support ring is arranged between the cap of the rivet and the diaphragm spring. The support ring is in the shape of a circular tube with a hollow interior, and the support ring is provided with an annular notch communicating with its interior. The annular notch is coaxially arranged with the support ring, and the annular notch is located on the side of the support ring away from the center or on the side of the support ring close to the center. The present invention can effectively prevent the diaphragm spring in the clutch from loosening.

Description

Technical Field

[0001] The present invention relates to the technical field of clutches, and particularly to a clutch with an elastic compensation device. Background Art

[0002] Existing clutches generally include a pressure plate, a diaphragm spring, rivets, and a support ring. The diaphragm spring is riveted to the pressure plate through the rivets, and the support ring is arranged between the head of the rivet and the diaphragm spring. Among the after-sales faulty parts of the clutch, we found that in a large proportion of the failure modes of the clutch cover and the pressure plate assembly, after the clutch has been used for a period of time, problems such as the clutch pedal becoming heavy and having a secondary step occur. Further disassembling and analyzing the faulty parts, it is found that the rivets of the clutch diaphragm spring and the diaphragm spring are both worn by the support ring to form pits, causing the diaphragm spring to become loose, and further resulting in abnormalities when the clutch is disengaged. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above technical deficiencies, provide a clutch with an elastic compensation device, and solve the technical problem that the clutch has abnormalities after the spring rivets and the diaphragm spring are worn by the support ring in the prior art.

[0004] To achieve the above technical purpose, the technical solution of the present invention provides a clutch with an elastic compensation device, which is characterized by comprising:

[0005] A pressure plate;

[0006] A diaphragm spring, the diaphragm spring is connected to the pressure plate through a rivet;

[0007] A support ring, the support ring is coaxially arranged with the pressure plate, the support ring is arranged between the head of the rivet and the diaphragm spring, the support ring is in a ring-shaped tubular shape and hollow inside, the support ring is provided with an annular notch communicating with its interior, the annular notch is coaxially arranged with the support ring, and the annular notch is located on the side of the support ring away from the center or on the side of the support ring close to the center.

[0008] Compared with the prior art, the beneficial effects of the present invention include: During the process of assembling the clutch, a pre-tightening force is applied to the support ring through the rivet, so that the upper and lower inner walls at the annular notch of the support ring approach each other. When the clutch has been used for a period of time, the diaphragm spring and the head of the rivet may be worn by the support ring, resulting in pits in the diaphragm spring and the clutch. After the pits appear, the clamping force received by the support ring decreases, and the annular notch of the support ring slowly resets, so that the support ring still abuts against the diaphragm spring and the head of the rivet, making the diaphragm spring continue to be in a compressed state, and the clutch can work normally. Description of the Drawings

[0009] Figure 1It is a schematic structural diagram of a clutch using a common support ring;

[0010] Figure 2 It is a schematic structural diagram of a clutch containing a common support ring after being used for a period of time;

[0011] Figure 3 It is Figure 2 The partial enlarged schematic diagram at position B in

[0012] Figure 4 It is a schematic structural diagram of one side of the center line of the clutch with an elastic compensation device described in Embodiment 1 of the present invention;

[0013] Figure 5 It is a schematic structural diagram of one side of the center line of the clutch with an elastic compensation device described in Embodiment 1 of the present invention after being used for a period of time;

[0014] Figure 6 It is a three-dimensional schematic diagram of the support ring in Embodiment 1 of the present invention;

[0015] Figure 7 It is a schematic structural diagram of the support ring in Embodiment 1 of the present invention;

[0016] Figure 8 It is along Figure 7 The sectional view taken along line D - D in

[0017] Figure 9 It is Figure 8 The partial enlarged schematic diagram at position E in

[0018] Figure 10 It is a schematic diagram of the cross-section of one side when the support ring in Embodiment 1 of the present invention is clamped;

[0019] Figure 11 It is a sectional view of one side of the support ring, ball and limit ring in Embodiment 2 of the present invention. Detailed implementation manners

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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 used to limit the present invention.

[0021] Embodiment 1:

[0022] The present invention provides a clutch with an elastic compensation device. As Figures 1 to 10 shown, it includes a pressure plate 1, a pressure cover 2, a plurality of rivets 3, a diaphragm spring 4, and a support ring 5. The pressure plate 1 is coaxially provided with a central hole, and the pressure plate 1 is provided with a plurality of through holes. The plurality of through holes are uniformly arranged along the circumferential direction of the pressure plate 1, and each through hole is arranged along the axial direction of the pressure plate 1.

[0023] The diaphragm spring 4 is connected to the pressure plate 1 by rivets 3. Specifically, the rivets 3 are arranged in one-to-one correspondence with the through holes. The rivets 3 pass through the pressure plate 1 through the through holes. The diaphragm spring 4 is arranged between the pressure plate 1 and the pressure cover 2. One end of the diaphragm spring 4 abuts against the pressure plate 1, and the other end abuts against the pressure cover 2.

[0024] The pressure cover 2 is coaxially and detachably connected to the pressure plate 1. Specifically, the pressure cover 2 is riveted to the pressure plate 1. The connection method between the pressure cover 2 and the pressure plate 1 is a prior art and will not be described in detail.

[0025] The support ring 5 is coaxially arranged with the pressure plate 1. The support ring 5 is in a ring-shaped tubular shape and is hollow inside. The support ring 5 is provided with an annular notch 5a communicating with its interior. The annular notch 5a is coaxially arranged with the support ring 5. The annular notch 5a is located on the side of the support ring 5 away from the center or on the side of the support ring 5 close to the center.

[0026] Preferably, the annular notch 5a is located on the side of the support ring 5 away from the center.

[0027] Any material has a certain toughness. When the support ring 5 is compressed, the inner walls at the annular notch 5a approach each other, the support ring 5 is compressed, and the support ring 5 has an elastic restoring force for resetting.

[0028] Preferably, the material of the support ring 5 is spring steel.

[0029] By setting the material of the support ring 5 as spring steel, the support ring 5 has the ability of elastic deformation and has good strength.

[0030] Preferably, the support ring 5 is made of a hollow tube with a C-shaped cross section.

[0031] By making the support ring 5 of a hollow tube with a C-shaped cross section, when the upper and lower inner walls at the annular notch 5a approach each other, the ring part of the support ring 5 has good bendable characteristics and is elastic.

[0032] Preferably, the height of the annular notch 5a along the axial direction of the support ring 5 is less than the inner diameter of the support ring 5.

[0033] During riveting, the cap of the rivet 3 is set at the end of the diaphragm spring 4 away from the pressure plate 1, and then the end of the rivet 3 away from the cap is squeezed, so that the rivet 3 is deformed and the rivet abuts against the end of the pressure plate 1 away from the diaphragm spring 4.

[0034] By setting the height of the annular notch 5a along the axial direction of the support ring 5 to be less than the inner diameter of the support ring 5, when the height of the annular notch 5a along the axial direction of the support ring 5 is too large, it is avoided that the deformable distance of the support ring 5 along the axial direction is too long during preloading, and it is avoided that the support ring 5 is fractured or broken.

[0035] Further preferably, the height of the annular notch 5a along the axial direction of the support ring 5 is one-half of the inner diameter of the support ring 5.

[0036] When the height of the annular notch 5a along the axial direction of the support ring 5 is too small, the deformable length of the support ring 5 is too small, resulting in too small an elastic restoring force provided by the support ring 5. When the height of the annular notch 5a along the axial direction of the support ring 5 is too large, the deformable distance of the support ring 5 is too large, causing the deformable length of the support ring 5 to be too large, and there may be a situation where the support ring 5 is fractured during preloading. Therefore, the height of the annular notch 5a along the axial direction of the support ring 5 is selected to be one-half of the inner diameter of the support ring 5 to avoid the above two situations, so that the support ring 5 has an appropriate elastic restoring force and good structural strength.

[0037] The specific working process of the present invention: During the assembly of the clutch, a preloading force is applied to the support ring 5 through the rivet 3, so that the upper and lower inner walls at the annular notch 5a of the support ring 5 approach each other. After the clutch is used for a period of time, the diaphragm spring 4 and the cap of the rivet 3 may be worn by the support ring 5, resulting in pits on the diaphragm spring 4 and the clutch. After the pits appear, the clamping force received by the support ring 5 decreases, and the annular notch 5a of the support ring 5 slowly resets, so that the support ring 5 still abuts against the diaphragm spring 4 and the cap of the rivet 3, enabling the diaphragm spring 4 to continue to be in a compressed state and the clutch to work normally.

[0038] Embodiment Two:

[0039] As Figure 11 shown, the same parts between Embodiment Two and Embodiment One will not be elaborated. The difference between Embodiment Two and Embodiment One is that the clutch with an elastic compensation device further includes at least one ball 6, and the ball 6 is built into the support ring 5.

[0040] Preferably, the diameter of the ball 6 is greater than the height of the annular notch 5a along the axial direction of the support ring 5.

[0041] By designing the diameter of the ball 6 to be greater than the height of the annular notch 5a along the axial direction of the support ring 5, it is avoided that the ball 6 slides out from the annular notch.

[0042] Preferably, the number of the balls 6 is multiple, and the multiple balls 6 are evenly distributed along the circumferential direction of the support ring 5.

[0043] The number of the balls 6 can be set as needed. The number of the balls 6 can be one, two, three, four, etc. Preferably, the number of the balls 6 is eight, and the eight balls 6 are evenly distributed along the circumferential direction of the driving support ring 5.

[0044] When the rivet 3 rivets the diaphragm to the pressure plate 1, the force exerted by the cap of the rivet 3 on the support ring 5 may be too large. By providing the ball 6, when the pre-tightening force exerted by the rivet 3 on the support ring 5 is too large, the ball 6 abuts against the inner wall of the support ring 5, preventing the support ring 5 from being cracked or damaged due to excessive clamping force.

[0045] Preferably, the clutch with an elastic compensation device further includes a limit ring 7 coaxially disposed inside the support ring 5. The limit ring 7 is provided with a fixing hole corresponding to each ball 6, and the limit ring 7 is sleeved on the corresponding ball 6 through the fixing hole, preventing the ball 6 from rolling freely in the support ring 5 and preventing the balls 6 from aggregating together.

[0046] The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A clutch with an elastic compensation device, characterized in that, Comprising: Pressure plate; Diaphragm spring, which is connected to the pressure plate by a rivet; Support ring, the support ring is coaxially arranged with the pressure plate, the support ring is arranged between the cap of the rivet and the diaphragm spring, the support ring is in a ring-shaped tubular shape with a hollow interior, the support ring is provided with an annular notch communicating with its interior, the support ring is made of a hollow tube with a C-shaped cross-section, the annular notch is coaxially arranged with the support ring, and the annular notch is located on the side of the support ring away from the center or on the side of the support ring close to the center; the pressure plate is provided with a plurality of through holes, the plurality of through holes are evenly arranged along the circumferential direction of the pressure plate, each through hole is arranged along the axial direction of the pressure plate, and the rivet passes through the pressure plate through the through hole; A plurality of ball bearings, the ball bearings are built in the support ring and evenly distributed along the circumferential direction of the support ring, and the diameter of the ball bearings is greater than the height of the annular notch along the axial direction of the support ring; Limit ring, the limit ring is coaxially built in the support ring, the limit ring is provided with a fixing hole for each ball bearing, and the limit ring is sleeved on the corresponding ball bearing through the fixing hole.

2. The clutch with an elastic compensation device according to claim 1, characterized in that, The material of the support ring is spring steel.

3. The clutch with an elastic compensation device according to claim 1, characterized in that, The annular notch is located on the side of the support ring away from the center.

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