CN210240354U

CN210240354U - Friction clutch

Info

Publication number: CN210240354U
Application number: CN201920246629.2U
Authority: CN
Inventors: Yanshun Zhang; 张延顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-04-03
Anticipated expiration: 2029-02-15

Abstract

The utility model provides a friction clutch relates to the auto-parts field. The utility model provides a friction clutch includes power transmission shaft, driving disc, driven disc first, driven disc second, cylinder, spring, power transmission shaft and driving disc fixed connection, driven disc first and driven disc second symmetry are installed in the both sides of driving disc to make clutch driving disc and driven disc first and the separation of the contact friction surface of driven disc second through the spring, hold-down mechanism cylinder is connected respectively to driven disc first and driven disc second, the shape of the contact friction surface of clutch driving disc and driven disc first and driven disc second is the surface part of the V type ring both sides that correspond each other or a part in the V type ring both sides surface part that corresponds each other, and the change that this kind of clutch carried out the shape of the contact friction surface of driving disc and driven disc is a design that has the innovation relatively.

Description

Friction clutch

Technical Field

The invention relates to a clutch in the field of automobile accessories, in particular to a friction clutch.

Background

The friction clutch is a clutch which is widely applied and has the longest history, and basically comprises a driving part, a driven part and a pressing mechanism. When the pressing mechanism applies pressure to the driven plate, the friction surfaces of the driving part and the driven part are in contact with each other, the clutch is in a disengaged state, and when the pressing mechanism applies pressure to the driven plate, the friction surfaces of the driving part and the driven part are in contact with each other, the clutch is in an engaged state, and power can be transmitted. Most friction clutches currently available require a hold-down mechanism to provide a relatively large amount of pressure when transmitting power in an engaged state.

Disclosure of Invention

The present invention is directed to a friction clutch, which solves the problem of the prior art that a friction clutch pressing mechanism is required to provide a large pressure when the friction clutch is engaged to transmit power.

In order to achieve the purpose, the invention provides the following technical scheme:

a friction clutch comprises a power transmission shaft, a driving disc, a driven disc A, a driven disc B, a cylinder and a spring. The power transmission shaft and the driving disc are fixedly connected, the driven disc A and the driven disc B are symmetrically arranged on two sides of the driving disc, the clutch driving disc and the driven disc A are separated from a contact friction surface of the driven disc B through springs, and the driven disc A and the driven disc B are respectively connected with the pressing mechanism cylinder.

Furthermore, the shape of the contact friction surfaces of the driving disc, the driven disc A and the driven disc B of the clutch is one of the surface parts on two sides of the V-shaped circular ring corresponding to each other or one part of the surface parts on two sides of the V-shaped circular ring corresponding to each other.

Furthermore, the shape of the contact friction surface of the friction clutch can be one or a plurality of surface parts at two sides of the V-shaped circular ring or one part of the surface parts at two sides, which correspond to each other.

Further, if the contact friction surfaces of the driving discs of the friction clutch are convex, the contact friction surfaces of the two driven discs of the friction clutch are concave corresponding to each other, and if the contact friction surfaces of the driving discs of the friction clutch are concave, the contact friction surfaces of the two driven discs of the friction clutch are convex corresponding to each other.

Compared with the prior art, the invention has the beneficial effects that: the friction clutch realizes the change of the prior friction clutch, and the changed part is the shape of the contact friction surface of the driving disk and the two driven disks. The shape of the contact friction surfaces of the driving disc and the two driven discs of the clutch is one of the surface parts on two sides of the V-shaped circular rings corresponding to each other or one part of the surface parts on two sides of the V-shaped circular rings corresponding to each other, the mechanical structure which can enable the contact friction surfaces of the driving disc and the driven disc of the clutch to generate positive pressure by providing pressure to the driven disc of the clutch in the shape of the contact friction surfaces is a triangular wedge structure in physics, and under the condition that the waist length of an isosceles triangle on the section of the triangular wedge is greater than the length of a wedge back, the positive pressure generated between the contact friction surfaces of the driving disc and the driven disc of the friction clutch is certainly greater than the pressure which is provided by a pressing mechanism of the friction clutch to the driven disc and is perpendicular.

Drawings

FIG. 1 is a schematic structural diagram of the friction clutch

In the figure: 1. the device comprises a power transmission shaft, 2 driving discs, 3 driven discs A and B, 4 driven discs B and B, 5 air cylinders, 6 and springs.

FIG. 2 is a schematic diagram of the mechanical structure of the friction clutch pressing mechanism in which the cylinder provides pressure to the driven plate to generate positive pressure on the friction surface between the driving plate and the driven plate

In the figure; 201. the pressure of a pressing mechanism cylinder on a driven disc (indicated by F), the positive pressure between 202 and contact friction surfaces of a driving disc and the driven disc (indicated by N), the waist length of an isosceles triangle of a mechanical structure triangular wedge section (indicated by L), the length of a mechanical structure triangular wedge section isosceles triangle back (indicated by D), 205, a power transmission shaft, 206, the driving disc, 207 and the driven disc.

FIG. 3 is a schematic diagram showing the contact friction surface shape of the driving disk, the driven disk A and the driven disk B when the driving disk of the friction clutch is convex in black in FIG. 3

FIG. 4 is a schematic diagram showing the contact friction surface shapes of the driving disk, the driven disk A and the driven disk B when the driving disk of the friction clutch is concave, as shown in the black part in FIG. 4

FIG. 5 is a schematic diagram of the friction clutch in FIG. 5, in which the black portions are the shapes of the friction surfaces of the friction clutch when the friction surfaces are the surfaces on both sides of a plurality of V-shaped rings corresponding to each other

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the present invention provides a technical solution:

a friction clutch comprises a power transmission shaft 1, a driving disc 2, a driven disc A3, a driven disc B4, a cylinder 5 and a spring 6, wherein the power transmission shaft 1 is fixedly connected with the driving disc 2, the driven disc A3 and the driven disc B4 are symmetrically arranged on two sides of the driving disc 2, the spring 6 is used for separating contact friction surfaces of the driving disc (2) and the driven disc A3 of the clutch from the driven disc B4, and the driven disc A3 and the driven disc B4 are respectively connected with a pressing mechanism cylinder 5; the clutch is a power transmission mechanism, when power is not transmitted, a pressing mechanism air cylinder or a hydraulic cylinder does not generate pressure on a driven disc A3 and a driven disc B4, under the action of a spring 6, contact friction surfaces of a driving disc A3 and the driven disc A3 and a driven disc B4 are separated, when power is transmitted, a pressing mechanism air cylinder or a hydraulic cylinder 5 respectively provides pressure on the driven disc A3 and the driven disc B4 and points to and is perpendicular to the axial direction of a power transmission shaft, and the contact friction surfaces of the driving disc 2 and the driven disc A3 of the clutch and the driven disc B4 are gradually jointed and generate relative rotation in the process of transmitting the power. The friction clutch mainly depends on the friction of contact surfaces to generate friction force transmission torque, namely, the friction clutch utilizes positive pressure transmission torque between the contact friction surfaces of a driving disk 2, a driven disk A3 and a driven disk B4 required for generating friction force, because the shapes of the contact friction surfaces of the driving disk 2, the driven disk A3 and the driven disk B4 of the clutch are surface parts at two sides of a V-shaped ring corresponding to each other or parts of two side surfaces of the V-shaped ring corresponding to each other, a pressing mechanism of the friction clutch with the structure provides a pressure F vertical to the axial direction of a power transmission shaft for the driven disk, positive pressure N can be generated between the contact friction surfaces of the driving disk and the driven disk, through force analysis, the mechanical structure is a triangular split structure in physics, the section of the triangular split is an isosceles triangle, and the length of the bottom edge of the isosceles triangle is a split D, etc. ofThe length of the waist triangle waist is L according to the force balance condition;

therefore, the first and second electrodes are formed on the substrate,

therefore, in the case that L is larger than D, the pressing mechanism of the friction clutch with the structure can provide a smaller pressure force F to the driven plate so as to generate a larger positive pressure transmission torque between the driving plate and the contact friction surface of the driven plate of the friction clutch, and the larger the ratio of L to D, the larger the ratio of N to F.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a friction clutch, includes power transmission shaft (1), driving disk (2), driven plate first (3), driven plate second (4), cylinder (5), spring (6), power transmission shaft (1) and driving disk (2) fixed connection, the both sides in driving disk (2) are installed to driven plate first (3) and driven plate second (4) symmetry to make the contact friction surface separation of clutch driving disk (2) and driven plate first (3) and driven plate second (4) through spring (6), hold-down mechanism cylinder (5), its characterized in that are connected respectively to driven plate first (3) and driven plate second (4): the shapes of contact friction surfaces of the driving disk (2) and the driven disk A (3) of the clutch and the driven disk B (4) are surface parts on two sides of the V-shaped circular rings which correspond to each other or parts of two side surfaces of the V-shaped circular rings which correspond to each other.

2. A friction clutch according to claim 1, wherein; the shape of the friction clutch contact friction surface may be one or a plurality of mutually corresponding surface portions on both sides of the V-shaped circular ring or one part of two side surface portions.

3. A friction clutch according to claim 1, wherein; if the contact friction surfaces of the driving discs of the friction clutch are convex, the contact friction surfaces of the two driven discs of the friction clutch are concave and, if the contact friction surfaces of the driving discs of the friction clutch are concave, the contact friction surfaces of the two driven discs of the friction clutch are convex.