CN204755644U - Passageway formula clutch pressure plate - Google Patents

Abstract

The utility model discloses a channel-type clutch pressure plate, which comprises an annular body, and is characterized in that: a radial heat dissipation channel and a circumferential heat dissipation channel are arranged inside the annular body, and a shaft passing through the annular body is arranged on the end surface of the annular body. To the heat dissipation through hole; the heat dissipation through hole, the radial heat dissipation channel, and the circumferential heat dissipation channel are connected to each other; the radial heat dissipation channel is an arc-shaped channel, whose outer end extends to the outer edge of the ring body, and the inner end extends to the ring The inner edge of the body; the radial heat dissipation channel is a right spiral arc channel. The utility model can effectively and quickly dissipate heat, reduce the temperature rise of the pressure plate, and has high strength and rigidity, so that the clutch is not easy to slip and burn.

Description

A channel type clutch pressure plate

technical field

The utility model belongs to the technical field of auto parts and relates to a clutch, in particular to a channel-type clutch pressure plate.

Background technique

The pressure plate is an annular metal disc, which is usually a solid structure and is often used in automobile clutches. The clutch pressure plate of an automobile is prone to clutch slipping and burning disc failures during heavy-load starting and uphill acceleration. The main reason for the failure is that during the clutch engagement process, sliding friction occurs between the clutch friction plate and the pressure plate, and the friction work will be converted into heat energy, which will increase the temperature of the pressure plate and reduce the torque transmission capacity, which will eventually lead to clutch slipping and burning plate failure.

In order to solve this problem, the Chinese patent "pressure plate" with publication number CN203756784U discloses such a structure: a pressure plate includes an annular body, a central hole is arranged at the center of the annular body, and the annular body includes The inner edge and the outer edge, the outer edge is provided with a number of heat dissipation through holes, the inner edge is provided with a diversion groove, the heat dissipation through hole is connected with the diversion groove, and the gap between the two adjacent heat dissipation through holes is Reinforcing ribs are arranged between them, and a heat dissipation groove is provided on the other side of the heat dissipation through hole relative to the reinforcement rib, and the heat dissipation groove is located between two adjacent heat dissipation through holes and communicates with the heat dissipation through hole. This structure realizes enhanced heat dissipation through the interconnection of heat dissipation grooves, heat dissipation through holes, and flow guide grooves, and ensures the strength and rigidity of the pressure plate. However, in this patent, the designed guide groove is radially from the heat dissipation through hole to the inner edge of the pressure plate, so that the hot air flows to the center of the pressure plate to converge, which is not conducive to the rapid heat dissipation of the pressure plate.

Therefore, the heat dissipation capacity of the existing clutch pressure plate is limited, and it cannot quickly dissipate heat and reduce the temperature rise of the pressure plate, which eventually leads to clutch slipping and burnt plate failure.

Utility model content

The purpose of this utility model is to provide a channel type clutch pressure plate in view of the deficiencies of the above-mentioned prior art. piece.

The purpose of this utility model is achieved through the following technical solutions:

A channel-type clutch pressure plate, including an annular body, which is different from the prior art in that: the inside of the annular body is provided with a radial cooling channel and a circumferential cooling channel, and the end surface of the annular body is provided with an axial shaft passing through the annular body. thermal vias;

The heat dissipation through holes, the radial heat dissipation channels and the circumferential heat dissipation channels communicate with each other.

The radial heat dissipation channel is an arc channel, the outer end of which extends to the outer edge of the ring body, and the inner end extends to the inner edge of the ring body.

Preferably, the radial heat dissipation channel is a right spiral arc channel.

The number of radial cooling channels is 20-28.

The number of the circumferential cooling channels is 1-3.

The heat dissipation through holes are arranged in a staggered manner on the annular body.

Compared with the existing clutch pressure plate, this pressure plate has the following advantages:

1) By setting the heat dissipation channel inside the pressure plate and conducting it with the heat dissipation through hole, the hot air flow introduced by the heat dissipation through hole on the end surface of the pressure plate can be quickly taken away by the internal air flow. The overall flow direction of the hot air flow is from the pressure plate body The inner edge flows to the outer edge of the body, making full use of the centrifugal force when the clutch pressure plate rotates, so as to realize rapid heat dissipation and reduce the temperature rise of the pressure plate;

2) Through the conduction of the radial heat dissipation channel and the circumferential heat dissipation channel inside the pressure plate, the flow speed of the airflow can be accelerated, the contact area between the pressure plate and the airflow can be increased, and the flow state of the airflow can easily reach a turbulent state, thereby enhancing the pressure plate and airflow. The convective heat transfer coefficient and contact area when the air conducts convective heat transfer realizes the effect of rapid heat dissipation of the pressure plate;

3) Reduce the weight of the pressure plate and save materials;

4) Removing materials on the end face of the pressure plate and inside the body can ensure the rigidity and strength of the pressure plate.

Description of drawings

Fig. 1 is the front view structure schematic diagram of embodiment;

Fig. 2 is G-G sectional view among Fig. 1;

FIG. 3 is a rear view structural schematic diagram of FIG. 1 .

In the figure, 1. Annular body 11. Outer edge 12. Inner edge 2. Radial heat dissipation channel 3. Circumferential heat dissipation channel 4. Heat dissipation through hole 41. Heat dissipation through hole connected with radial heat dissipation channel 42. Thermal vias that communicate with each other.

Detailed ways

The content of the utility model will be further elaborated below in conjunction with the accompanying drawings and embodiments, but the utility model is not limited.

Example:

Referring to Figures 1-3, a channel-type clutch pressure plate includes an annular body 1, a radial heat dissipation channel 2 and a circumferential heat dissipation channel 3 are provided inside the annular body 1, and a through-ring ring is provided on the end surface of the annular body 1. The axial cooling through hole 4 of the body 1;

The heat dissipation through holes 4 , the radial heat dissipation channels 2 and the circumferential heat dissipation channels 3 communicate with each other.

The radial cooling channel 2 is an arc-shaped channel, its outer end extends to the outer edge 11 of the ring body 1 , and its inner end extends to the inner edge 12 of the ring body 1 .

In this embodiment, the radial heat dissipation channel 2 is a right spiral arc channel. The arc-shaped channel can increase the convective heat transfer area and accelerate the heat dissipation of the pressure plate; the right-hand helical direction can match the high-speed rotation direction of the pressure plate, and make full use of the centrifugal force generated by the high-speed rotation of the pressure plate to speed up the airflow and speed up the heat dissipation of the pressure plate.

The number of radial cooling channels 2 is 20-28, and the number in this embodiment is 24.

The number of the circumferential cooling channels 3 is 1-3, and the number in this embodiment is 2.

The number of heat dissipation through holes 41 communicating with the radial heat dissipation passages is 12-48, and the number in this embodiment is 30.

The number of heat dissipation through holes 42 communicating with the circumferential ventilation channel is 18-36, and the number of this embodiment is 27.

The heat dissipation through holes 4 are arranged in a staggered manner on the annular body 1 . The heat dissipation through holes 4 are arranged in a staggered manner, so that on the basis of ensuring the strength of the end surface of the pressure plate, the end surface heat dissipation through holes can communicate with the inner radial heat dissipation channel and the circumferential heat dissipation channel more uniformly.

Specifically, the clutch pressure plate adopts a one-time casting process. In production, in addition to the number disclosed in this embodiment, the number and size of the radial heat dissipation channel 2, the circumferential heat dissipation channel 3, and the heat dissipation through hole 4 can be determined according to the specific Situation to design and formulate.

The principle of the utility model is: when the ring body 1 of the pressure plate rotates and generates heat by friction at high speed, the generated heat passes through the axial heat dissipation through hole 4 on the end face, the radial heat dissipation channel 2 and the circumferential heat dissipation channel 3, and is released inside the ring body 1. The forced convection heat transfer of the heat dissipation channel and the centrifugal force of the pressure plate rotation accelerate the airflow speed, and a large amount of airflow quickly flows from the inner edge 12 of the body to the outer edge 11 of the body and then radiates into the ambient air, thereby enhancing the heat dissipation of the pressure plate and reducing the temperature of the end surface of the pressure plate Lift.

Compared with the conventional pressure plate of the same size, the measured weight of this pressure plate is about 2~3 kg; it can significantly reduce the temperature rise of the pressure plate during friction; it can improve the clutch pressure plate slipping and burning failure, and increase the service life of the clutch.

The basic principles, main features and advantages of the present utility model have been shown and described above. On the premise of not departing from the spirit and scope of the present utility model, there will be various changes and improvements, and these changes and improvements all fall within the scope of the claimed protection.

Claims (10)

1. a channel-type clutch compressing disc, comprises ring body, it is characterized in that: described ring body inside is provided with radial heat dissipation channel, circumferential heat dissipation channel, and described ring body end face is provided with the axial thermal vias of through ring body;

Described thermal vias, radial heat dissipation channel, circumferential heat dissipation channel are interconnected.

2. channel-type clutch compressing disc according to claim 1, is characterized in that: described radial heat dissipation channel is curved channel, and its outer end extends to the outward edge of ring body, and the inner extends to the inward flange of ring body.

3. channel-type clutch compressing disc according to claim 2, is characterized in that: described radial heat dissipation channel is right-hand screw curved channel.

4. channel-type clutch compressing disc according to claim 1, is characterized in that: the quantity of described radial heat dissipation channel is 20-28.

5. channel-type clutch compressing disc according to claim 4, is characterized in that: the quantity of described radial heat dissipation channel is 24.

6. channel-type clutch compressing disc according to claim 1, is characterized in that: the quantity of described circumferential heat dissipation channel is 1-3.

7. channel-type clutch compressing disc according to claim 6, is characterized in that: the quantity of described circumferential heat dissipation channel is 2.

8. channel-type clutch compressing disc according to claim 1, is characterized in that: its quantity of thermal vias communicated with described radial heat dissipation channel is 12-48.

9. channel-type clutch compressing disc according to claim 1, is characterized in that: its quantity of thermal vias communicated with described circumferential heat dissipation channel is 18-36.

10. channel-type clutch compressing disc according to claim 1, is characterized in that: described thermal vias is at ring body alternate.