Clutch pressure plate and clutch

Abstract

The invention relates to a clutch pressure plate and a clutch. The pressure plate comprises a pressure plate body; a heat dissipation groove is formed in the non-friction face of the pressure plate body, the two ends of the heat dissipation groove are provided with openings in the inner wall and the outer wall of the pressure plate body, the heat dissipation groove comprises an inlet section, a negative pressure section and an outlet section which are sequentially communicated in the direction from the outer wall to the inner wall, and the width of the inlet section and the width of the outlet section are gradually reduced to be consistent with the width of the negative pressure section in the direction close to the negative pressure section. The heat dissipation grooves are evenly distributed in the circumferential direction of the pressure plate body at intervals. A plurality of heat dissipation channels are arranged in the pressure plate body, the heat dissipation channels are arranged in the axial direction of the pressure plate body, the two ends of each heat dissipation channel are through, the heat dissipation channels are evenly distributed in the circumferential direction of the pressure plate body at intervals, the heat dissipation channels communicate with the heat dissipation grooves in a one-to-one correspondence mode, and air outlet sections of the heat dissipation channels communicate with negative pressure sections of the heat dissipation grooves. By arranging the heat dissipation grooves and the heat dissipation channels, an airflow circulation path for discharging air from one side of the friction surface through the heat dissipation channels and the non-friction surface is formed, the heat dissipation efficiency is improved, and the temperature of the pressure plate is prevented from being too high.

Description

Technical Field

[0001] The present invention relates to the technical field of clutches, and in particular to a clutch pressure plate and a clutch. Background Art

[0002] During the clutch engagement process, relative rotation will occur between the engine flywheel and the friction plate, and between the friction plate and the pressure plate until the two are synchronized. During this process, the friction surface of the pressure plate will generate a large amount of heat due to friction, causing the temperature of the pressure plate to rise. Excessive temperature can easily cause the pressure plate to burn and deform, affecting its adaptability and service life.

[0003] There are generally two ways to solve the problem of excessive platen temperature: one is to increase the platen volume to increase its weight, thereby increasing the platen heat capacity and reducing the platen temperature; the other is to increase the platen surface area to speed up the heat dissipation. However, due to the limited installation space, the platen weight cannot be increased too much, resulting in an unsatisfactory effect of this method, and simply increasing the surface area has limited effect on the heat dissipation speed. Therefore, how to solve the problem of excessive platen temperature is a difficult problem in the industry. Summary of the invention

[0004] Based on the above description, the present invention provides a clutch pressure plate and a clutch to solve the problem of excessively high pressure plate temperature.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: In a first aspect, the present application provides a clutch pressure plate, and the technical solution adopted is as follows: A clutch pressure plate, comprising: Pressure plate body; A plurality of heat dissipation grooves are provided on the non-friction surface of the pressure plate body, and the two ends of the heat dissipation grooves are respectively opened on the inner wall and the outer wall of the pressure plate body, and the heat dissipation grooves include an inlet section, a negative pressure section and an outlet section which are sequentially connected in the direction from the outer wall to the inner wall of the pressure plate body, and the width of the inlet section and the outlet section are gradually reduced in the direction close to the negative pressure section to be consistent with the width of the negative pressure section, and the plurality of heat dissipation grooves are evenly spaced and distributed along the circumference of the pressure plate body; The pressure plate body is provided with a plurality of heat dissipation channels, the number of which is the same as the heat dissipation slots. The heat dissipation channels are axially arranged along the pressure plate body and are connected at both ends. The plurality of heat dissipation channels are evenly spaced along the circumference of the pressure plate body. The heat dissipation channels are connected with the heat dissipation slots one by one, and the heat dissipation channels are connected with the negative pressure section of the heat dissipation slots.

[0006] Preferably, the heat dissipation channel includes an air inlet section, an acceleration section and an air outlet section which are connected in sequence from the friction surface of the pressure plate body to the non-friction surface. The diameters of the air inlet section and the air outlet section gradually decrease in the direction approaching the acceleration section to be consistent with the diameter of the acceleration section. The air outlet section of the heat dissipation channel is connected to the negative pressure section of the heat dissipation groove.

[0007] Preferably, the pressure plate body is provided with a plurality of heat absorption channels having the same number as the heat dissipation channels, the heat absorption channels correspond to the heat dissipation channels one-to-one, one end of the heat absorption channel is connected to the acceleration section corresponding to the heat dissipation channel, and the other end opens at the friction surface of the pressure plate body.

[0008] Preferably, the opening of the heat absorption channel on the friction surface of the pressure plate body is located between the center of the friction surface and the heat dissipation channel.

[0009] Preferably, in the direction in which the pressure plate body rotates with the driven plate, the heat dissipation grooves are spaced apart from one end and the other end close to the inner wall of the pressure plate body.

[0010] Preferably, the friction surface of the pressure plate body is provided with air inlet grooves having the same number as the heat dissipation channels, the air inlet grooves correspond to the heat dissipation channels one-to-one, one end of the air inlet groove is connected to the air inlet section corresponding to the heat dissipation channel, and the other end is open on the outer wall of the pressure plate body.

[0011] Preferably, in the direction in which the pressure plate rotates with the driven plate, the air inlet grooves are spaced apart from one end and the other end close to the heat dissipation channel.

[0012] Preferably, a filter is provided at the inlet of the air intake section of the heat dissipation channel.

[0013] Preferably, the friction surface of the pressure plate body is provided with slag discharge grooves having the same number as the heat dissipation channels, and the slag discharge grooves correspond to the heat dissipation channels one by one. One end of the slag discharge groove is connected to the air inlet section of the corresponding heat dissipation channel, and the other end is opened on the outer wall of the pressure plate body, and in the direction in which the pressure plate rotates with the driven plate, the slag discharge grooves are spaced apart in sequence from one end close to the outer wall of the pressure plate body and the other end.

[0014] In a second aspect, the present application provides a clutch comprising a clutch pressure plate as described above.

[0015] Compared with the prior art, the technical solution of the present application has at least the following beneficial technical effects: 1. The clutch pressure plate of the present application is provided with heat dissipation grooves on the non-friction surface of the pressure plate body and heat dissipation channels in the pressure plate body. When the pressure plate body contacts the friction plate of the driven plate and rotates with the driven plate, air flows through the heat dissipation grooves at high speed. The low pressure generated by the high-speed airflow is used to draw out the air in the heat dissipation channels, so that the air on one side of the friction surface enters from the air intake section of the heat dissipation channel and is discharged from the non-friction surface side after passing through the acceleration section and the air outlet section. The air absorbs the heat of the friction surface and is discharged from the non-friction surface side, thereby achieving the purpose of heat dissipation on the friction surface of the pressure plate, and the heat is taken away by the air to achieve heat dissipation of the entire pressure plate. In addition, the design of the width of the heat dissipation slot inlet section, negative pressure section and outlet section enables the heat dissipation slot to form a Venturi channel. Due to the Venturi effect, the air flow through the heat dissipation channel increases in velocity and generates negative pressure when passing through the negative pressure section, and the air outlet section of the heat dissipation channel is connected to the negative pressure section of the heat dissipation slot. The negative pressure generated by the negative pressure section further increases the suction effect on the air in the heat dissipation channel, providing greater power for the air flow path of the friction surface air discharged from the non-friction surface through the heat dissipation channel, thereby further increasing the air flow rate and air flow velocity through the heat dissipation channel to accelerate heat dissipation, improve heat dissipation efficiency, and avoid excessive temperature of the pressure plate.

[0016] 2. The present application designs the diameters of the heat dissipation channel's air inlet section, acceleration section, and air outlet section so that the heat dissipation channel also forms a Venturi channel. The airflow through the heat dissipation channel is accelerated after passing through the acceleration section and generates negative pressure. The negative pressure can further suck the air on the friction surface side of the pressure plate to further increase the airflow entering the heat dissipation channel and thus accelerate heat dissipation.

[0017] 3. In the present application, a heat absorption channel is provided to connect the acceleration section of the heat dissipation channel and the friction surface of the pressure plate body. The negative pressure generated by the acceleration section produces a suction effect on the heat absorption channel, so as to suck the air in the opening area of ​​the heat absorption channel on the friction surface of the pressure plate through the heat absorption channel, thereby expanding the air suction range on the friction surface of the pressure plate body to achieve uniform heat dissipation in various areas of the friction surface and avoid excessive local temperature.

[0018] 4. In the present application, an air inlet groove is set up, and air enters the heat dissipation channel through the air inlet groove, thereby ensuring the air flow passing through the heat dissipation channel to ensure the heat dissipation effect. At the same time, the design of the positions at both ends of the air inlet groove can increase the air flow entering the air inlet groove when the pressure plate rotates, so as to further utilize the air passing through the air inlet groove to dissipate heat on the friction surface of the pressure plate body.

[0019] 5. The present application sets a filter at the entrance of the heat dissipation channel to filter out large-sized impurities to prevent large-particle impurities from entering the heat dissipation channel and causing blockage, and sets a slag discharge trough to use the centrifugal force of the rotating pressure plate to discharge the filtered impurities, thereby ensuring the flow cross-sectional area of ​​the heat dissipation channel entrance.

[0020] 6. The clutch of the present application can effectively solve the problem of excessive pressure plate temperature by adopting the clutch pressure plate provided by the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of the non-friction surface of a clutch pressure plate provided in an embodiment of the present invention; Figure 2 for Figure 1 Sectional view along line AA; Figure 3 for Figure 2 A partial enlarged schematic diagram of Figure 4 A schematic structural diagram of the friction surface of a clutch pressure plate provided in an embodiment of the present invention; Figure 5 for Figure 3 A magnified schematic diagram of area B.

[0022] Description of reference numerals: 1. Platen body; 11. Friction surface; 12. Non-friction surface; 13. Heat dissipation groove; 131. Inlet section; 132. Negative pressure section; 133. Outlet section; 14. Heat dissipation channel; 141. Air intake section; 142. Acceleration section; 143. Air outlet section; 15. Heat absorption channel; 16. Air intake groove; 17. Slag discharge groove; 18. Countersunk hole; 2. Filter screen. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0026] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0027] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0028] Reference Figure 1-5 As shown, the embodiment of the present application provides a clutch pressure plate, including a pressure plate body 1, a plurality of heat dissipation grooves 13 are provided on the non-friction surface 12 of the pressure plate body 1, and the two ends of the heat dissipation grooves 13 are respectively opened on the inner wall and the outer wall of the pressure plate body 1, and the heat dissipation grooves 13 include an inlet section 131, a negative pressure section 132 and an outlet section 133 which are sequentially connected from the outer wall to the inner wall of the pressure plate body 1, and the width of the inlet section 131 and the outlet section 133 are gradually reduced to the same width as the negative pressure section 132 along the direction close to the negative pressure section 132, and the plurality of heat dissipation grooves 13 are evenly spaced along the circumference of the pressure plate body 1. The pressure plate body 1 is provided with a plurality of heat dissipation channels 14 having the same number as the heat dissipation grooves 13, and the heat dissipation channels 14 are arranged axially along the pressure plate body 1 and are through at both ends, and the plurality of heat dissipation channels 14 are evenly spaced along the circumference of the pressure plate body 1, and the heat dissipation channels 14 are connected to the heat dissipation grooves 13 one by one, and the heat dissipation channels 14 are connected to the negative pressure section 132 of the heat dissipation grooves 13.

[0029] Through this arrangement, when the pressure plate body 1 contacts the friction plate of the driven plate and rotates with the driven plate, the airflow passes through the heat dissipation groove 13 at high speed, and the low pressure generated by the high-speed airflow is used to draw out the air in the heat dissipation channel 14, so that the air on the side of the friction surface 11 enters from the air inlet section 141 of the heat dissipation channel 14, and is discharged from the side of the non-friction surface 12 after passing through the acceleration section 142 and the air outlet section 143. The air absorbs the heat of the friction surface 11 and is discharged from the side of the non-friction surface 12, thereby achieving the purpose of heat dissipation on the friction surface 11 of the pressure plate, and the heat is taken away by the air to achieve heat dissipation for the entire pressure plate. In addition, the design of the width of the inlet section 131, the negative pressure section 132 and the outlet section 133 of the heat dissipation groove 13 enables the heat dissipation groove 13 to form a Venturi channel. Due to the Venturi effect, the air flow through the heat dissipation channel 14 increases in velocity and generates negative pressure when passing through the negative pressure section 132, and the air outlet section 143 of the heat dissipation channel 14 is connected to the negative pressure section 132 of the heat dissipation groove 13. The negative pressure generated by the negative pressure section 132 further increases the suction effect on the air in the heat dissipation channel 14, providing greater power for the air flow path of the friction surface 11 discharged from the non-friction surface 12 through the heat dissipation channel 14, thereby further increasing the air flow rate and air flow velocity through the heat dissipation channel 14 to accelerate heat dissipation, improve heat dissipation efficiency, and avoid excessive temperature of the pressure plate.

[0030] Reference Figure 1 As shown, specifically, to ensure that the airflow passes through the heat dissipation slot 13 at high speed, the heat dissipation slot 13 is arranged in the direction in which the pressure plate body 1 rotates with the driven plate, and the heat dissipation slot 13 is spaced from one end close to the inner wall of the pressure plate body 1 and the other end in sequence. The included angle between the axis of the heat dissipation slot 13 and the movement direction of any point on the axis when the pressure plate body 1 rotates is an obtuse angle, so that when the pressure plate body 1 rotates, the airflow enters the heat dissipation slot 13 from the end of the heat dissipation slot 13 close to the outer wall and flows along the axial direction of the heat dissipation slot 13, ensuring that the airflow passes through the heat dissipation slot 13 at high speed along the axial direction of the heat dissipation slot 13 to generate negative pressure in the negative pressure section 132 of the heat dissipation slot 13, thereby providing sufficient power for the air on the friction surface 11 to pass through the heat dissipation channel 14.

[0031] Reference Figure 2-3 As shown, further, the heat dissipation channel 14 includes an air inlet section 141, an acceleration section 142 and an air outlet section 143 which are connected in sequence from the friction surface 11 to the non-friction surface 12 of the pressure plate body 1. The diameters of the air inlet section 141 and the air outlet section 143 gradually decrease in the direction approaching the acceleration section 142 to be consistent with the diameter of the acceleration section 142. The air outlet section 143 of the heat dissipation channel 14 is connected to the negative pressure section 132 of the heat dissipation groove 13.

[0032] Through this arrangement, the heat dissipation channel 14 also forms a Venturi channel. The airflow passing through the heat dissipation channel 14 is accelerated and generates negative pressure after passing through the acceleration section 142. The negative pressure can further play a role in sucking the air on the side of the friction surface 11 of the pressure plate, so as to further increase the airflow entering the heat dissipation channel 14 and accelerate the heat dissipation. The high-temperature airflow after passing through the heat dissipation channel 14 is mixed with the low-temperature airflow dissipated through the heat groove for heat exchange, thereby accelerating the heat dissipation rate on the side of the high-temperature friction surface 11. Specifically, the outlet diameter of the air outlet section 143 of the heat dissipation channel 14 is set to be no larger than the width of the negative pressure section 132 of the heat dissipation groove 13, so that the high-temperature airflow after passing through the heat dissipation channel 14 and the low-temperature airflow dissipated through the heat groove are fully mixed for heat exchange.

[0033] Reference Figure 2-5 As shown, in order to ensure uniform heat dissipation in various areas on the friction surface 11, a plurality of heat absorption channels 15 having the same number as the heat dissipation channels 14 are provided in the platen body 1. The heat absorption channels 15 correspond to the heat dissipation channels 14 one by one. One end of the heat absorption channel 15 is connected to the acceleration section 142 of the corresponding heat dissipation channel 14, and the other end is opened at the friction surface 11 of the platen body 1. Since the suction area of ​​the heat dissipation channel 14 on one side of the friction surface 11 of the platen body 1 surrounds the vicinity of the entrance of the heat dissipation channel 14, in order to effectively dissipate heat at a position far from the heat dissipation channel 14 on the friction surface 11, the opening of the heat absorption channel 15 on the friction surface 11 is set to a position spaced from the entrance of the heat dissipation channel 14. The negative pressure generated by the acceleration section 142 produces a suction effect on the heat absorption channel 15, so as to suck the air in the opening area of ​​the heat absorption channel 15 on one side of the friction surface 11 of the platen through the heat absorption channel 15, thereby expanding the air suction range on one side of the friction surface 11 of the platen body 1, so as to achieve uniform heat dissipation in various areas of the friction surface 11 and avoid excessive local temperature. The number and opening positions of the heat absorption channels 15 can be designed according to actual heat dissipation needs, and the diameter of the heat absorption channel 15 needs to be smaller than the diameter of the acceleration section 142 of the heat dissipation channel 14 to ensure that the air flow rate of the heat dissipation channel 14 as the main air flow channel is greater than the air flow rate of the heat absorption channel 15. In this embodiment, the heat absorption channel 15 is provided with an opening on the friction surface 11 of the pressure plate body 1, which is located between the center of the friction surface 11 and the heat dissipation channel 14 for illustration.

[0034] Reference Figure 4As shown, further, the friction surface 11 of the platen body 1 is provided with the same number of air inlet grooves 16 as the heat dissipation channels 14, and the air inlet grooves 16 correspond to the heat dissipation channels 14 one by one, and one end of the air inlet groove 16 is connected to the air inlet section 141 of the corresponding heat dissipation channel 14, and the other end is opened on the outer wall of the platen body 1. Specifically, air can enter the heat dissipation channel 14 through the air inlet groove 16, and the air flow through the heat dissipation channel 14 can be guaranteed to ensure the heat dissipation effect. At the same time, the air flow passing through the heat dissipation channel 14 can also increase the contact area and contact time between the air flow and the friction surface 11 to fully absorb the heat of the friction surface 11, and the air inlet groove 16 is located between the heat dissipation channel 14 and the outer wall of the platen body 1, and cooperates with the heat absorption channel 15 between the heat dissipation channel 14 and the inner wall of the platen body 1, so that the effective heat dissipation area can cover the entire friction surface 11, further ensuring uniform heat dissipation at all positions of the friction surface 11.

[0035] Reference Figure 4 As shown, further, the air inlet groove 16 is arranged so that one end of the air inlet groove 16 close to the heat dissipation channel 14 and the other end of the air inlet groove 16 are sequentially spaced apart in the direction in which the pressure plate rotates with the driven plate. This arrangement makes the included angle between the axis of the air inlet groove 16 and the direction of movement of any point on the axis when the pressure plate body 1 rotates with the pressure plate body 1 form an obtuse angle, so that when the pressure plate body 1 rotates, the airflow enters the air inlet groove 16 from the end of the air inlet groove 16 close to the outer wall, so that the airflow flows at a high speed along the axial direction of the air inlet groove 16, and further utilizes the airflow pressure in the air inlet groove 16 to provide power for the air on the friction surface 11 to enter the heat dissipation channel 14, and cooperates with the negative pressure suction effect of the heat dissipation groove 13 to increase the airflow and flow rate through the heat dissipation channel 14 to accelerate heat dissipation.

[0036] Reference Figure 3 and Figure 5 As shown, in order to avoid clogging of the heat dissipation channel 14 and the heat absorption channel 15, a filter 2 is provided at the inlet of the air inlet section 141 of the heat dissipation channel 14 and the inlet of the heat absorption channel 15, so as to filter large particles of impurities through the filter 2 to avoid entering the heat dissipation channel 14 and the heat absorption channel 15 and causing clogging. Further, a slag discharge groove 17 having the same number as the heat dissipation channel 14 is provided on the friction surface 11 of the platen body 1, and the slag discharge groove 17 corresponds to the heat dissipation channel 14 one by one, one end of the slag discharge groove 17 is connected to the air inlet section 141 of the corresponding heat dissipation channel 14, and the other end is opened on the outer wall of the platen body 1, and in the direction in which the platen rotates with the driven plate, the slag discharge groove 17 is spaced from one end to the other end of the outer wall of the platen body 1. The impurities filtered at the inlet of the heat dissipation channel 14 are discharged through the slag discharge groove 17 by the centrifugal force of the rotation of the platen, thereby ensuring the flow cross-sectional area of ​​the inlet of the heat dissipation channel 14 to ensure the air flow rate.

[0037] Reference Figure 5As shown, specifically, countersunk holes 18 are provided at the entrance of the heat dissipation channel 14 and the entrance of the heat absorption channel 15, and the filter screen 2 is installed in the countersunk hole 18, and the filter screen 2 at the entrance of the heat dissipation channel 14 does not protrude from the bottom surface of the air inlet groove 16, and the filter screen 2 at the entrance of the heat absorption channel 15 does not protrude from the friction surface 11 of the pressure plate body 1. In this embodiment, the filter screen 2 is formed by opening a plurality of holes on a metal sheet, and the filter screen 2 and the countersunk hole 18 are interference-fitted to achieve the installation of the filter screen 2 in the countersunk hole 18.

[0038] This embodiment also provides a clutch, which includes the clutch pressure plate described above.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A clutch pressure plate, characterized in that: include: Pressure plate body (1); A plurality of heat dissipation grooves (13) are provided on the non-friction surface (12) of the pressure plate body (1), and the two ends of the heat dissipation grooves (13) are respectively opened on the inner wall and the outer wall of the pressure plate body (1), and the heat dissipation grooves (13) include an inlet section (131), a negative pressure section (132) and an outlet section (133) which are sequentially connected in the direction from the outer wall to the inner wall of the pressure plate body (1), and the widths of the inlet section (131) and the outlet section (133) are gradually reduced in the direction close to the negative pressure section (132) to be consistent with the width of the negative pressure section (132), and the plurality of heat dissipation grooves (13) are evenly spaced and distributed along the circumference of the pressure plate body (1); The pressure plate body (1) is provided with a plurality of heat dissipation channels (14) of the same number as the heat dissipation grooves (13); the heat dissipation channels (14) are arranged axially along the pressure plate body (1) and are connected at both ends; the plurality of heat dissipation channels (14) are evenly spaced and distributed circumferentially along the pressure plate body (1); the heat dissipation channels (14) are connected to the heat dissipation grooves (13) in a one-to-one correspondence, and the heat dissipation channels (14) are connected to the negative pressure section (132) of the heat dissipation grooves (13).

2. The clutch pressure plate according to claim 1, characterized in that: The heat dissipation channel (14) comprises an air inlet section (141), an acceleration section (142) and an air outlet section (143) which are connected in sequence from the friction surface (11) to the non-friction surface (12) of the pressure plate body (1); the diameters of the air inlet section (141) and the air outlet section (143) are gradually reduced in a direction approaching the acceleration section (142) to be consistent with the diameter of the acceleration section (142); and the air outlet section (143) of the heat dissipation channel (14) is connected to the negative pressure section (132) of the heat dissipation groove (13).

3. The clutch pressure plate according to claim 2, characterized in that: The pressure plate body (1) is provided with a plurality of heat absorption channels (15) whose number is the same as the heat dissipation channels (14), and the heat absorption channels (15) correspond to the heat dissipation channels (14) one by one. One end of the heat absorption channel (15) is connected to the acceleration section (142) corresponding to the heat dissipation channel (14), and the other end is open to the friction surface (11) of the pressure plate body (1).

4. The clutch pressure plate according to claim 3, characterized in that: The opening of the heat absorption channel (15) on the friction surface (11) of the pressure plate body (1) is located between the center of the friction surface (11) and the heat dissipation channel (14).

5. The clutch pressure plate according to claim 1, characterized in that: In the direction in which the pressure plate body (1) rotates with the driven plate, the heat dissipation grooves (13) are spaced apart from one end and the other end of the inner wall of the pressure plate body (1).

6. The clutch pressure plate according to claim 1, characterized in that: The friction surface (11) of the pressure plate body (1) is provided with air inlet grooves (16) the same number as the heat dissipation channels (14), the air inlet grooves (16) correspond to the heat dissipation channels (14) one by one, one end of the air inlet groove (16) is connected to the air inlet section (141) corresponding to the heat dissipation channel (14), and the other end is open on the outer wall of the pressure plate body (1).

7. The clutch pressure plate according to claim 6, characterized in that: In the direction in which the pressure plate rotates with the driven plate, the air inlet grooves (16) are spaced apart from one end close to the heat dissipation channel (14) and the other end thereof.

8. The clutch pressure plate according to claim 1, characterized in that: A filter screen (2) is provided at the inlet of the air intake section (141) of the heat dissipation channel (14).

9. The clutch pressure plate according to claim 8, characterized in that: The friction surface (11) of the pressure plate body (1) is provided with slag discharge grooves (17) having the same number as the heat dissipation channels (14), and the slag discharge grooves (17) correspond to the heat dissipation channels (14) one by one. One end of the slag discharge groove (17) is connected to the air inlet section (141) of the corresponding heat dissipation channel (14), and the other end is opened on the outer wall of the pressure plate body (1), and in the direction in which the pressure plate rotates with the driven plate, the slag discharge grooves (17) are spaced apart from one end and the other end of the outer wall of the pressure plate body (1).

10. A clutch, characterized in that: Comprising a clutch pressure plate as described in any one of claims 1-8.

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