Hybrid friction plate and clutch

Abstract

The utility model relates to the technical field of clutches, in particular to a hybrid friction plate and a clutch. The hybrid friction plate comprises a ceramic plate body and an organic plate body, the ceramic plate body and the organic plate body are annularly distributed in the circumferential direction, the outer diameter of the ceramic plate body is larger than that of the organic plate body, and the inner diameter of the ceramic plate body is smaller than that of the organic plate body, so that the organic plate body is located in an abrasion area of a matched friction face of the ceramic plate body and connected with the matched friction face. According to the hybrid friction plate disclosed by the utility model, the ceramic plate body has better wear characteristic and the organic plate body has better joint quality, and the organic plate body is positioned in a wear area of the matched friction surface of the ceramic plate body and is jointed with the matched friction surface; therefore, when the ceramic plate body abrades an annular groove with the same inner diameter as the ceramic plate body on a flywheel surface or a pressure plate surface, the organic plate body can completely fall to the bottom of the groove to be combined, the service life of the hybrid friction plate is further prolonged, and normal work of a clutch is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a mixed friction plate and a clutch. Background Art

[0002] The clutch driven disc assembly is located in the flywheel housing between the engine and the clutch cover. The spline hub of the clutch driven disc assembly is fixed on one shaft of the gearbox. The output shaft of the clutch is the input shaft of the gearbox. During the driving process of the car, the driver can step on or release the clutch pedal as needed to temporarily separate and gradually engage the engine and the gearbox to cut off or transfer the power input from the engine to the transmission. The clutch is a common component in mechanical transmission. The transmission system can be separated or engaged at any time. It transmits power by friction of the driven disc. However, the existing clutch driven disc has poor wear resistance. When the car is starting and shifting, the relative sliding friction between the master and the driven parts causes the friction surface of the driven disc to heat up. The torque transmission capacity of the clutch will be greatly reduced due to the reduction of the friction coefficient of the friction plate. Excessive sliding temperature will cause the friction plate to burn and lose the torque transmission capacity. Utility Model Content

[0003] The technical problem to be solved by the embodiments of the utility model is to provide a hybrid friction plate and a clutch to solve the problem in the prior art that the friction plate of the clutch driven disc is easily heated due to excessive use, resulting in a decrease in the friction coefficient.

[0004] The utility model discloses a hybrid friction plate, comprising a ceramic plate body and an organic plate body distributed in a ring shape along the circumferential direction with the ceramic plate body, wherein the outer diameter of the ceramic plate body is larger than the outer diameter of the organic plate body, and the inner diameter of the ceramic plate body is smaller than the inner diameter of the organic plate body, so that the organic plate body is located in the wear area of ​​the ceramic plate body and engages with the matching friction surface.

[0005] Optionally, a metal substrate is disposed on the ceramic sheet, so that after the ceramic sheet and the matching friction surface are engaged, the metal substrate provides mechanical support for the ceramic sheet.

[0006] Optionally, a plurality of first heat dissipation holes are provided at an edge of one side of the ceramic sheet, and the first heat dissipation holes penetrate the ceramic sheet and the metal substrate, so that the heat between the ceramic sheet and the metal substrate is discharged through the first heat dissipation holes.

[0007] Optionally, the metal substrate is provided with a plurality of first rivet holes corresponding to the clutch driven plate, and the ceramic sheet is provided with rivet accommodating holes corresponding one-to-one to the rivet holes.

[0008] Optionally, the plurality of first heat dissipation holes include at least one first heat dissipation hole arranged at an outer ring edge of the ceramic plate body, and at least one first heat dissipation hole arranged at an inner ring edge of the ceramic plate body;

[0009] The plurality of rivet accommodating holes include at least one rivet accommodating hole arranged on the outer ring edge of the ceramic sheet body, and at least one rivet accommodating hole arranged on the inner ring edge of the ceramic sheet body, and the plurality of rivet accommodating holes are distributed along the diagonal direction of the ceramic sheet body.

[0010] Optionally, the organic sheet is provided with a plurality of eccentrically inclined partition grooves, the partition grooves connect the inner ring edge and the outer ring edge of the organic sheet, and the plurality of partition grooves separate the organic sheet into a plurality of friction units with irregular friction surfaces.

[0011] Optionally, the organic sheet is provided with a riveting hole group and a heat dissipation hole group, respectively. In two adjacent friction units, one of the friction units is provided with the riveting hole group, and the adjacent friction unit is provided with the heat dissipation hole group.

[0012] Optionally, the rivet hole group includes a plurality of second rivet holes distributed along the diagonal direction of the friction unit, and the plurality of second rivet holes include at least one second rivet hole arranged on the outer ring edge of the friction unit, and at least one second rivet hole arranged on the inner ring edge of the friction unit;

[0013] The heat dissipation hole group includes a plurality of second heat dissipation holes distributed along one side edge of the friction unit, and the plurality of second heat dissipation holes include at least one second heat dissipation hole arranged on the outer ring edge of the friction unit, and at least one second heat dissipation hole arranged on the inner ring edge of the friction unit.

[0014] Optionally, the hybrid friction plate includes an equal number of the ceramic sheets and the organic sheets, the ceramic sheets and the organic sheets are alternately arranged along a ring, and the arc length of the ceramic sheets is smaller than the arc length of the organic sheets.

[0015] Based on the above-mentioned hybrid friction plate, the utility model also discloses a clutch, comprising a driven plate, and the hybrid friction plate arranged on the driven plate.

[0016] Compared with the prior art, the hybrid friction plate and clutch provided by the embodiment of the utility model have the following beneficial effects:

[0017] The hybrid friction plate is composed of a ceramic plate body and an organic plate body that is distributed in an annular shape along the circumference of the ceramic plate body. The ceramic plate body has good wear characteristics and the organic plate body has good bonding quality, so that the hybrid friction plate of the utility model takes into account both wear resistance and bonding performance, thereby avoiding the friction plate from being easily heated due to excessive use, resulting in a decrease in the friction coefficient, and then causing the clutch to lose its torque transmission ability. At the same time, due to the good wear characteristics of the ceramic plate body, it will wear the matching friction surface. Therefore, the organic plate body is located in the wear area of ​​the ceramic plate body and the matching friction surface to be bonded with the matching friction surface, so as to ensure that when the ceramic plate body wears out an annular groove with the same inner and outer diameters as the ceramic plate body on the flywheel surface or the pressure plate surface, the organic plate body can completely fall to the bottom of the groove for bonding, thereby increasing the service life of the hybrid friction plate and ensuring the normal operation of the clutch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0019] Figure 1 A schematic diagram of the overall structure of a hybrid friction plate provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the assembly structure of a ceramic sheet and a metal substrate provided in an embodiment of the utility model.

[0021] The reference numerals in the figures are:

[0022] 1. Ceramic sheet; 11. First heat dissipation hole; 12. Rivet receiving hole; 2. Organic sheet; 21. Partition groove; 22. Second riveting hole; 23. Second heat dissipation hole; 3. Metal substrate; 31. First riveting hole. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0024] The utility model discloses a mixed friction plate, such as Figure 1As shown, it includes a ceramic sheet 1 and an organic sheet 2 that is distributed in a ring shape along the circumferential direction with the ceramic sheet 1. The outer diameter of the ceramic sheet 1 is larger than the outer diameter of the organic sheet 2, and the inner diameter of the ceramic sheet 1 is smaller than the inner diameter of the organic sheet 2, so that the organic sheet 2 is located in the wear area of ​​the ceramic sheet 1 for the matching friction surface and is engaged with the matching friction surface. Through the arrangement of this structure, since the ceramic sheet 1 has good wear characteristics, it is not easy to be overused. Even when the ceramic sheet 1 generates heat due to excessive use, its friction coefficient remains unchanged. However, the joining quality of the ceramic sheet 1 is not as good as that of the organic sheet 2, that is, the ceramic sheet 1 will wear the matching friction surface, such as the flywheel surface or the pressure plate surface. The organic sheet 2 has a better joining quality and will not wear the matching friction surface, but the organic sheet 2 is easy to be overused. Therefore, the embodiment of the utility model combines the good wear characteristics of the ceramic sheet 1 and the good bonding quality of the organic sheet 2, and adopts the ceramic sheet 1 and the organic sheet 2 distributed in an annular manner along the circumferential direction with the ceramic sheet 1 to form a hybrid friction plate, so that the hybrid friction plate of the utility model takes into account both wear resistance and bonding performance, thereby avoiding the situation where the hybrid friction plate is easily heated due to excessive use, resulting in a decrease in the friction coefficient, and then the clutch loses its torque transmission ability. At the same time, since the ceramic sheet 1 will wear the matching friction surface, the design of the size difference between the machine sheet and the ceramic sheet 1 is used to make the organic sheet 2 located in the wear area of ​​the ceramic sheet 1 on the matching friction surface and engage with the matching friction surface, so as to ensure that when the ceramic sheet 1 wears out an annular groove with the same inner and outer diameter as the ceramic sheet 1 on the flywheel surface or the pressure plate surface, the organic sheet 2 can completely fall to the bottom of the groove for bonding, thereby increasing the service life of the hybrid friction plate and ensuring the normal operation of the clutch. The hybrid friction plate of the utility model can be applied to the driven plate transmission of the clutch machine.

[0025] Furthermore, combined with Figure 2 As shown, a metal substrate 3 is provided on the ceramic sheet 1, so that after the ceramic sheet 1 and the matching friction surface are joined, the metal substrate 3 provides mechanical support for the ceramic sheet 1. Through the setting of this structure, the metal substrate 3 is preferably a steel plate. By using the metal substrate 3 as the base layer of the ceramic sheet 1, it can provide stable mechanical support for the ceramic sheet 1 when the ceramic sheet 1 is working, and improve the strength of the ceramic sheet 1 to increase the toughness of the ceramic sheet 1, so that the ceramic sheet 1 can still maintain good friction performance under high temperature and high pressure conditions. Preferably, the area of ​​the ceramic sheet 1 is smaller than the area of ​​the metal substrate 3.

[0026] Furthermore, a plurality of first heat dissipation holes 11 are provided at the edge of one side of the ceramic sheet 1. The first heat dissipation holes 11 penetrate the ceramic sheet 1 and the metal substrate 3 so that the heat between the ceramic sheet 1 and the metal substrate 3 can be discharged through the first heat dissipation holes 11. Through the setting of this structure and the setting of the first heat dissipation holes 11, when the ceramic sheet 1 is working and generates heat, the heat on the ceramic sheet 1 and the heat between the ceramic sheet 1 and the metal substrate 3 can be dissipated along the first heat dissipation holes 11, thereby reducing the temperature of the ceramic sheet 1 and preventing the ceramic sheet 1 from affecting its friction coefficient due to excessive temperature. At the same time, it helps to balance the heat between the ceramic sheet 1 and the metal substrate 3 and prevent local overheating.

[0027] Furthermore, the metal substrate 3 is provided with a plurality of first rivet holes 31 corresponding to the driven plate of the clutch, and the ceramic sheet 1 is provided with rivet receiving holes 12 corresponding one to one to the rivet holes. Through the arrangement of this structure, a plurality of first rivet holes 31 are utilized so as to fix the metal substrate 3 on the driven plate of the clutch by means of rivet fixing. The ceramic sheet 1 and the metal substrate 3 can preferably be fixed by means of welding, bonding, etc. At the same time, the rivet receiving holes 12 on the ceramic sheet 1 can, on the one hand, assist in accurately positioning the rivets to ensure the stability and consistency of the riveting process; on the other hand, it can prevent the head of the rivet from protruding to the outside of the ceramic sheet 1 after riveting, thereby avoiding interference with the function of the ceramic sheet 1.

[0028] Furthermore, the plurality of first heat dissipation holes 11 include at least one first heat dissipation hole 11 arranged on the outer ring edge of the ceramic sheet 1, and at least one first heat dissipation hole 11 arranged on the inner ring edge of the ceramic sheet 1;

[0029] The plurality of rivet receiving holes include at least one rivet receiving hole 12 disposed on the outer ring edge of the ceramic sheet 1 and at least one rivet receiving hole 12 disposed on the inner ring edge of the ceramic sheet 1 , and the plurality of rivet receiving holes 12 are distributed along the diagonal direction of the ceramic sheet 1 .

[0030] By setting the above structure, by using the first heat dissipation holes 11 set on the outer ring and inner ring edges of the ceramic sheet 1, more heat dissipation paths can be provided between the ceramic sheet 1 and the metal substrate 3, thereby improving the heat conduction efficiency, effectively managing heat, and preventing the equipment from overheating. At the same time, by using the rivet receiving holes 12 set on the outer ring and inner ring edges of the ceramic sheet 1, by using rivets on the outer ring and inner ring edges of the ceramic sheet 1 to fix the metal substrate 3, it can be ensured that the ceramic sheet 1 has stable positioning and fixation during operation, thereby improving the overall structural stability of the ceramic sheet 1.

[0031] Furthermore, the organic sheet 2 is provided with a plurality of eccentrically inclined partition grooves 21, which connect the inner ring edge and the outer ring edge of the organic sheet 2, and the plurality of partition grooves 21 divide the organic sheet 2 into a plurality of friction units with irregular friction surfaces. Through the arrangement of this structure, the eccentrically inclined partition grooves 21 on the organic sheet 2 are utilized to form a plurality of irregular friction surfaces on the surface of the organic sheet 2, thereby increasing the friction coefficient between the organic sheet 2 and the matching friction surface, reducing the sliding that may be generated due to the overall contact of the organic sheet 2, so as to improve the friction efficiency and controllability of the organic sheet 2. At the same time, the partition grooves 21 are utilized to help disperse and conduct the heat on the organic sheet 2, so that the heat generated by the organic sheet 2 during operation can be discharged faster along the partition grooves 21, thereby reducing the heat accumulation of the organic sheet 2 and avoiding overheating.

[0032] Furthermore, the organic sheet 2 is provided with a riveting hole group and a heat dissipation hole group, respectively. In two adjacent friction units, one of the friction units is provided with a riveting hole group, and the adjacent friction unit is provided with a heat dissipation hole group. By setting up this structure, by providing riveting hole groups and heat dissipation hole groups on different friction units, it is possible to effectively manage heat while ensuring the friction performance of the organic sheet 2, thereby maintaining the performance of several friction units stable.

[0033] Further, the riveting hole group includes a plurality of second riveting holes 22 distributed along the diagonal direction of the friction unit, and the plurality of second riveting holes 22 include at least one second riveting hole 22 arranged at the outer ring edge of the friction unit, and at least one second riveting hole 22 arranged at the inner ring edge of the friction unit;

[0034] The heat dissipation hole group includes a plurality of second heat dissipation holes 23 distributed along one side edge of the friction unit, and the plurality of second heat dissipation holes 23 include at least one second heat dissipation hole 23 arranged on the outer ring edge of the friction unit, and at least one second heat dissipation hole 23 arranged on the inner ring edge of the friction unit.

[0035] By setting the above structure, by using the second heat dissipation holes 23 set on the outer ring and inner ring edges of the friction unit, more heat dissipation paths can be provided on the organic sheet 2, thereby improving the heat conduction efficiency, effectively managing heat, and preventing the device from overheating. At the same time, by using the second rivet holes 22 set on the outer ring and inner ring edges of the friction unit, by using rivets on the outer ring and inner ring edges of the friction unit to fix the organic sheet 2, it can be ensured that the organic sheet 2 has stable positioning and fixation during operation, thereby improving the overall structural stability of the organic sheet 2.

[0036] Further, the hybrid friction plate comprises a plurality of ceramic sheets 1 and a plurality of organic sheets 2 in equal numbers, the plurality of ceramic sheets 1 and the plurality of organic sheets 2 are alternately arranged along a ring, and the arc length of the ceramic sheets 1 is smaller than the arc length of the organic sheets 2. By setting this structure, by using an equal number of ceramic sheets 1 and organic sheets 2 alternately arranged along a ring, the overall performance can be optimized by using friction sheets of different materials while keeping the overall thickness of the hybrid friction plate unchanged, so that the hybrid friction plate of the embodiment of the utility model has both good wear resistance and bonding performance. At the same time, the structure of alternately arranged rings can improve the overall structural stability of the hybrid friction plate and reduce deformation caused by uneven materials. In addition, by using the arc length of the ceramic sheets 1 being smaller than the arc length of the organic sheets 2, the bonding area of ​​the ceramic sheets 1 in the overall structure of the hybrid friction plate is much smaller than the bonding area of ​​the organic sheets 2, so as to reduce the degree of wear of the ceramic sheets 1 on the matching friction surface in the hybrid friction plate, thereby improving the service life of the hybrid friction plate and ensuring the normal operation of the clutch.

[0037] Based on the above-mentioned hybrid friction plate, the utility model also discloses a clutch, comprising a driven plate, and the hybrid friction plate arranged on the driven plate.

[0038] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A hybrid friction plate, characterized in that: The hybrid friction plate includes a ceramic sheet body and an organic sheet body distributed in a ring shape along the circumferential direction with the ceramic sheet body. The outer diameter of the ceramic sheet body is larger than the outer diameter of the organic sheet body, and the inner diameter of the ceramic sheet body is smaller than the inner diameter of the organic sheet body, so that the organic sheet body is located in the wear area of ​​the ceramic sheet body and engages with the matching friction surface.

2. The hybrid friction plate according to claim 1, characterized in that: A metal substrate is disposed on the ceramic sheet, so that after the ceramic sheet is engaged with the matching friction surface, the metal substrate provides mechanical support for the ceramic sheet.

3. The hybrid friction plate according to claim 2, characterized in that: A plurality of first heat dissipation holes are arranged at the edge of one side of the ceramic sheet, and the first heat dissipation holes penetrate the ceramic sheet and the metal substrate so that the heat between the ceramic sheet and the metal substrate can be discharged through the first heat dissipation holes.

4. The hybrid friction plate according to claim 3, characterized in that: The metal substrate is provided with a plurality of first rivet holes corresponding to the clutch driven plate, and the ceramic sheet is provided with rivet accommodating holes corresponding one-to-one to the rivet holes.

5. The hybrid friction plate according to claim 4, characterized in that: The plurality of first heat dissipation holes include at least one first heat dissipation hole arranged at the outer ring edge of the ceramic plate body, and at least one first heat dissipation hole arranged at the inner ring edge of the ceramic plate body; The plurality of rivet accommodating holes include at least one rivet accommodating hole arranged on the outer ring edge of the ceramic sheet body, and at least one rivet accommodating hole arranged on the inner ring edge of the ceramic sheet body, and the plurality of rivet accommodating holes are distributed along the diagonal direction of the ceramic sheet body.

6. The hybrid friction plate according to claim 1, characterized in that: The organic sheet body is provided with a plurality of eccentrically inclined partition grooves, the partition grooves are connected with the inner ring edge and the outer ring edge of the organic sheet body, and the plurality of partition grooves separate the organic sheet body into a plurality of friction units with irregular friction surfaces.

7. The hybrid friction plate according to claim 6, characterized in that: The organic sheet is provided with a riveting hole group and a heat dissipation hole group respectively. In two adjacent friction units, one of the friction units is provided with the riveting hole group, and the adjacent friction unit is provided with the heat dissipation hole group.

8. The hybrid friction plate according to claim 7, characterized in that: The rivet hole group includes a plurality of second rivet holes distributed along the diagonal direction of the friction unit, and the plurality of second rivet holes include at least one second rivet hole arranged at the outer ring edge of the friction unit, and at least one second rivet hole arranged at the inner ring edge of the friction unit; The heat dissipation hole group includes a plurality of second heat dissipation holes distributed along one side edge of the friction unit, and the plurality of second heat dissipation holes include at least one second heat dissipation hole arranged on the outer ring edge of the friction unit, and at least one second heat dissipation hole arranged on the inner ring edge of the friction unit.

9. The hybrid friction plate according to claim 1, characterized in that: The hybrid friction plate comprises a plurality of ceramic sheets and a plurality of organic sheets of equal number, wherein the plurality of ceramic sheets and the plurality of organic sheets are alternately arranged in a ring shape, and the arc length of the ceramic sheets is smaller than the arc length of the organic sheets.

10. A clutch, using the hybrid friction plate according to any one of claims 1 to 9, characterized in that: The clutch includes a driven plate and the hybrid friction plate arranged on the driven plate.

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