CN214036585U - Novel wet friction plate - Google Patents

Abstract

The utility model discloses a novel wet friction disc, it is including metal chip and a plurality of clutch blocks, a plurality of the clutch block adhesion is on metal chip's upper and lower two sides, the clutch block is the annular with first tangential angle and arranges on metal chip along metal chip's direction of rotation, forms the clutch block recess between two adjacent clutch blocks, be equipped with the friction disc indent on the clutch block, the friction disc indent sets up on the clutch block with second tangential angle along metal chip's the opposite direction of rotation. The utility model discloses an add the friction disc indent of establishing, be favorable to cooling lubricating oil faster taking away the frictional heat to improve the life of clutch blocks, reduce and pull moment, friction disc indent and clutch blocks recess overlap setting simultaneously are favorable to more the flow-through clutch blocks surface of cooling lubricating oil, play the effect that improves frictional behavior, make each side reach balanced effect, and improve the NVH performance.

Description

Novel wet friction plate

Technical Field

The utility model relates to a wet-type friction disc field, in particular to novel wet-type friction disc.

Background

In current automotive powertrain systems, the clutch occupies an increasingly important position, which entails transmitting (sending commands to the clutch via accelerator pedal conditions, vehicle speed, current gear information, etc.) a power source (torque and rotational speed) such as an engine or an electric motor to the wheels of the vehicle to drive the vehicle forward, either by engagement (including lugging) or disengagement of the clutch. Among them, through the examination of market excellence and decline over the years, the wet clutch is more and more popular with customers, and is widely used in a stepped automatic transmission with a hydraulic torque converter, a stepped automatic transmission without a hydraulic torque converter, a stepless automatic transmission with a hydraulic torque converter, a stepless automatic transmission without a hydraulic torque converter, a semiautomatic transmission, a wet dual clutch transmission, a single-speed special hybrid transmission, a multi-speed special hybrid transmission, a hybrid P2 structure, a multi-speed pure electric vehicle transmission, and the like (including but not limited to the above).

The friction plate has the key characteristics that friction materials such as powder metallurgy materials, carbon-based materials, paper-based materials, non-woven fabrics materials and the like (including the materials but not limited to the materials) which are bonded on a metal chip of the friction plate in the wet clutch (the friction materials are bonded on the metal chip by special glue) can transmit torque under the mutual matching of lubricating oil, and the friction plate has the key characteristics of good heat resistance, good durability, small space, light weight, small inertia, high efficiency, large torque transmission range, NVH (noise vibration and harshness) improvement and the like, so the friction plate is more and more popular with customers in the market.

Among many factors, the groove design of the friction material plays a key role, and especially plays an important role in heat resistance, durability and improvement of NVH (noise vibration and harshness). In the prior art, friction materials are arranged on a metal chip in an inclined annular mode along a rotation direction, and the design can reduce heat energy generated by friction, but has a large influence on the service life of the friction materials, and the NVH performance of the friction materials is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a novel wet friction piece changes the flow direction of cooling lubricating oil through setting up specific friction piece cell type, can also take away the heat energy that the friction produced when can improve the frictional behavior of cooling lubricating oil on the friction piece.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a novel wet friction piece, includes metal chip and a plurality of clutch blocks, and is a plurality of the clutch block adhesion is on metal chip's upper and lower two sides, the clutch block is the annular with first tangential angle and arranges on metal chip along metal chip's direction of rotation, forms the clutch block recess between two adjacent clutch blocks, be equipped with the friction disc indent on the clutch block, the friction disc indent sets up on the clutch block with second tangential angle along metal chip's the opposite direction of rotation.

Compared with the prior art, the utility model has the advantages of: through adding the friction disc indent in the opposite direction of establishing along friction disc direction of rotation, be favorable to cooling lubricating oil faster taking away the frictional heat to improve the life of clutch blocks, reduce and pull the moment, friction disc indent and clutch blocks recess overlap setting simultaneously, be favorable to cooling lubricating oil more the flow past clutch blocks surface, play the effect that improves frictional behavior, combine these two, make each side reach balanced effect, and improve the NVH performance.

Preferably, the friction plate indent is arranged perpendicular to the longitudinal axis of the metal core plate, or the friction plate indent is arranged perpendicular to the transverse axis of the metal core plate. The arrangement is convenient for the cooling lubricating oil to flow in and out, so that the friction performance can be improved while the friction heat can be taken away quickly.

Preferably, the groove width of the friction plate pressing groove is 1.5-3 mm. The design of this width makes things convenient for cooling lubricating oil to flow out to the friction disc outside through centrifugal force, plays the cooling lubrication effect.

Preferably, the length of the circular arc at the inner diameter of the friction block is smaller than that at the outer diameter of the friction block. The whole friction plate is of a circular ring structure, and in order to keep the width of the groove of the whole friction block consistent, the length of the arc at the inner diameter of the friction block needs to be designed to be smaller than that of the arc at the outer diameter of the friction block, so that the temperature of cooling lubricating oil is not changed due to the inconsistent width of the channel.

Preferably, the length of the circular arc at the inner diameter of the friction block is between 30 and 250mm, and the length of the circular arc at the outer diameter of the friction block is between 30 and 250 mm.

Preferably, the first tangential angle is an included angle between the friction block and a longitudinal axis of the metal chip, and the first tangential angle is between 0.01 degrees and 89.99 degrees. Therefore, cooling lubricating oil can flow out of the friction plate through the rotation of the friction plate by means of centrifugal force, and the cooling and lubricating effects are achieved.

Preferably, the groove width of the friction block groove is 1.2-2.5 mm. Thus, the cooling lubricant flows out to the outside of the friction plate by centrifugal force to play a role of cooling and lubricating, or the cooling lubricant flows more on the surface of the friction plate to increase the friction characteristic.

Preferably, a plurality of spline teeth are arranged on the inner circumferential surface of the metal chip. Thus, the whole friction plate is convenient to fix.

Drawings

FIG. 1 is a front view of a novel wet friction plate structure of the present invention;

FIG. 2 is a side view of a novel wet friction plate structure of the present invention;

fig. 3 is a back view of a novel wet friction plate structure.

The reference numbers in the figures illustrate: 1. the friction plate comprises a metal chip, 2 friction blocks, 3 friction block grooves, 4 friction plate grooves, 5 spline teeth.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present embodiment relates to a novel wet friction plate, which includes a metal core plate 1 and a plurality of friction blocks 2, wherein the friction blocks 2 are adhered to the upper and lower surfaces of the metal core plate 1. In this process, the friction block 2 is bonded to the metal chip 1 by glue.

The friction blocks 2 are annularly arranged on the metal chip 1 at a first tangential angle alpha along the rotation direction of the metal chip 1, and a friction block groove 3 is formed between every two adjacent friction blocks 2.

In the present embodiment, the length of the arc at the inner diameter of the friction block 2 is smaller than the length of the arc at the outer diameter of the friction block 2. The whole friction plate is of a circular ring structure, in order to keep the width of the whole friction block groove 3 consistent, the length of the circular arc at the inner diameter of the friction block 2 needs to be designed to be smaller than that of the circular arc at the outer diameter of the friction block 2, and the temperature of cooling lubricating oil is guaranteed not to be changed due to the fact that the width of the friction block groove 3 is inconsistent.

Wherein, the length of the arc at the inner diameter of the friction block 2 is between 30 and 250mm, and the length of the arc at the outer diameter of the friction block 2 is between 30 and 250 mm. The groove width d1 of the friction block groove 3 is between 1.2 and 2.5 mm. The cooling lubricating oil flows out to the outer side of the friction plate through centrifugal force to play a role in cooling and lubricating, or the cooling lubricating oil flows more on the surface of the friction plate to increase the friction characteristic.

In the present embodiment, the first tangential angle α is an included angle between the friction block 2 and the longitudinal axis of the metal chip 1, and the first tangential angle α is between 0.01 degrees and 89.99 degrees. The cooling lubricating oil can flow out of the friction plate by centrifugal force under the rotation action of the friction plate, and the cooling and lubricating effects are achieved.

In the present embodiment, the friction plate 2 is provided with a friction plate pressing groove 4, and the friction plate pressing groove 4 is arranged on the friction plate 2 at a second tangential angle along the direction opposite to the rotation direction of the metal core plate 1. The friction plate indent 4 may be formed by extrusion or by cutting.

Wherein the second tangential angle is 0-90 degrees. Preferably, the friction lining indentations 4 are arranged perpendicular to the longitudinal axis of the metal core plate 1 or the friction lining indentations 4 are arranged perpendicular to the transverse axis of the metal core plate 1. Therefore, the cooling lubricating oil can conveniently flow in and out, and the friction performance can be improved while the friction heat can be quickly taken away.

In the present exemplary embodiment, the groove width d2 of the friction lining press groove 4 is between 1.5 and 3 mm. The design of this width makes things convenient for cooling lubricating oil to flow out to the friction disc outside through centrifugal force, plays the cooling lubrication effect.

As shown in fig. 1 to 3, in order to further improve the friction performance, the friction blocks 2 on the front surface and the friction blocks 2 on the back surface of the metal core plate 1 are symmetrically arranged along the vertical axis of the side edge of the metal core plate 1. Specifically, compared with the directions of the friction blocks 2 on the back side of the metal chip 1 and the friction blocks 1 on the front side, the friction plates are symmetrically arranged in an opposite angle when viewed from the thickness direction of the friction plates.

In the present embodiment, the metal core 1 has a plurality of spline teeth 5 on its inner circumferential surface. The friction plate is connected with the inner hub and the outer hub of the clutch spline through spline teeth 5 and has friction action with a matching steel sheet so as to transmit torque to transmit the torque and the rotating speed of an engine to a gearbox and finally to transmit the torque and the rotating speed to a wheel to drive the wheel to move forwards or backwards.

The utility model has the advantages that: through adding the friction disc indent in the opposite direction of establishing along friction disc direction of rotation, be favorable to cooling lubricating oil faster taking away the frictional heat to improve the life of clutch blocks, reduce and pull the moment, friction disc indent and clutch blocks recess overlap setting simultaneously, be favorable to cooling lubricating oil more the flow past clutch blocks surface, play the effect that improves frictional behavior, combine these two, make each side reach balanced effect, and improve the NVH performance.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (8)

1. The utility model provides a novel wet friction disc, includes metal chip (1) and a plurality of clutch blocks (2), and is a plurality of clutch blocks (2) adhesion is on the upper and lower two sides of metal chip (1), its characterized in that: the metal core plate is characterized in that the friction blocks (2) are annularly arranged on the metal core plate (1) at a first tangential angle along the rotation direction of the metal core plate (1), a friction block groove (3) is formed between every two adjacent friction blocks (2), a friction plate pressure groove (4) is formed in each friction block (2), and the friction plate pressure groove (4) is formed in the friction block (2) at a second tangential angle along the opposite direction of the rotation direction of the metal core plate (1).

2. A new wet friction plate as set forth in claim 1 wherein: the friction plate pressing groove (4) is perpendicular to the longitudinal axis of the metal chip (1), or the friction plate pressing groove (4) is perpendicular to the transverse axis of the metal chip (1).

3. A new wet friction plate as set forth in claim 1 wherein: the groove width of the friction plate pressing groove (4) is 1.5-3 mm.

4. A new wet friction plate as set forth in claim 1 wherein: the length of the arc at the inner diameter of the friction block (2) is smaller than that of the arc at the outer diameter of the friction block (2).

5. A new wet friction plate as set forth in claim 4 wherein: the length of the circular arc at the inner diameter of the friction block (2) is 30-250mm, and the length of the circular arc at the outer diameter of the friction block (2) is 30-250 mm.

6. A new wet friction plate as set forth in claim 1 or 5 wherein: the first tangential angle is an included angle between the friction block (2) and the longitudinal axis of the metal chip (1), and the first tangential angle is between 0.01 degrees and 89.99 degrees.

7. A new wet friction plate as set forth in claim 1 wherein: the groove width of the friction block groove (3) is 1.2-2.5 mm.

8. A new wet friction plate as set forth in claim 1 wherein: and a plurality of spline teeth (5) are arranged on the inner circumferential surface of the metal chip (1).

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