CN201973135U

CN201973135U - Wedge type clutch with double retainers

Info

Publication number: CN201973135U
Application number: CN2011200556230U
Authority: CN
Inventors: 韦国余; 毛镇放; 沈巍; 谷雷; 刘志明
Original assignee: Jiangsu Nanfang Bearing Co Ltd
Current assignee: Jiangsu Nanfang Bearing Co Ltd
Priority date: 2011-03-04
Filing date: 2011-03-04
Publication date: 2011-09-14
Anticipated expiration: 2021-03-04

Abstract

The utility model relates to a wedge type clutch with double retainers; and the wedge type clutch is suitable for occasions which do not allow a clutch to idle separately. The clutch comprises an external seat ring and an internal seat ring, wherein the external seat ring is provided with an internal periphery track surface, and the internal seat ring is arranged on a concentric shaft of the outer seat ring and is provided with an external periphery track surface; the external seat ring and the internal seat ring can rotate mutually and coaxially; a plurality of wedges which are used for transmitting a torque are arranged between the external seat ring and the internal seat ring; the wedges are supported between the external seat ring and the internal seat ring by an external cylinder annular retainer and an internal cylinder annular retainer; spring pieces are arranged on the wedges and are used for pressing the wedges in advance along a wedge blocking direction; an outward flange is arranged at one end of the external retainer; and the external profile of the outward flange is oval; a major semi-shaft of the outward flange is slightly longer than the radius of an inner circle of the external seat ring; and a minor semi-shaft of the outward flange is slightly shorter than the radius of an external circle of the internal seat ring. The wedge type clutch with double retainers not only can be easily installed, but also can ensure that the clutch does not rotate relatively with the external seat ring.

Description

Two retainer wedge block type clutches

Technical field

The utility model relates to a kind of free wheel device that is used for transmitting torque or prevents to reverse in automobile, motorcycle, engineering machinery etc., particularly a kind of being applicable to do not allow dally separately two retainer wedge block type clutches of occasion of clutch.

Background technique

The overrunning clutch that is used for transmitting torque or anti-reversing in the starting of torque converter, the gearbox in the engineering machinery, two-wheeled or motor tricycle in the automobile gearbox and the gearbox, commonly used is as shown in Figure 5 Wedge type over running clutch.It has several voussoirs that is used for transmitting torque, and these voussoirs are supported by the outer retainer of a big annular tubular and the interior retainer of a circlet shape tubular, and by spring sheet voussoir are applied precompression along the wedging direction.The outside of retainer is equipped with outer race outside, the inner circumference raceway surface of outer race contacts with a side of voussoir, installed inside at interior retainer has inner race, the excircle raceway surface of inner race contacts with the voussoir another side, when spring sheet to voussoir when the wedging direction applies precompression, finish the transmission of moment of torsion.

In the process of transmitting torque, general use occasion meeting requirement clutch and outer race are synchronous, can not relatively rotate, and method commonly used just as shown in Figure 7.Outer retainer 3 ' in the existing Wedge type over running clutch, open two otch 8 ' at its end, then between these two otch 8 ', can form "T"-shaped otch 7 ' as shown in Figure 7, this "T"-shaped otch 7 ' can be along the outwards inclined to one side side of the periphery of outer retainer, form elastic force and contact, can prevent that outer retainer from relatively rotating with respect to outer race with the inner circumference raceway surface of outer race.But manufacturing process's complexity of existing Wedge type over running clutch, cost height, and "T"-shaped otch 7 ' loses elastic force easily, and will make outer retainer contact not tight with the inner circumference raceway surface of outer race in case follow the string, thereby cause outer retainer and outer race to relatively rotate, clutch was lost efficacy.

The model utility content

The technical problems to be solved in the utility model is: the short and easy technical problem that lost efficacy of clutch of manufacturing process's complexity, cost height, working life that solves existing wedge block type clutch.The utility model provides a kind of pair of retainer wedge block type clutch, and its processing technology is simple, and cost is low, the efficient height, and reduced retainer and outer race possibility in relative rotation, the working life of having improved clutch greatly.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of pair of retainer wedge block type clutch, comprise outer race with inner circumference raceway surface and the inner race that is arranged on the outer race concentric shafts with excircle raceway surface, described outer race and inner race be coaxial rotation mutually, be provided with a plurality of voussoirs that are used for transmitting torque between outer race and the inner race, described voussoir is supported between outer race and the inner race by the outer retainer of cylinder annular and the interior retainer of cylinder annular, be equipped with on the voussoir along the spring sheet of wedging direction precompressed voussoir, it is characterized in that, one end of described outer retainer is provided with outward flange, the external frame of described outward flange is oval, it is long that the major semi axis length of described ellipse is slightly larger than in the outer race radius of a circle, and it is long that the semi-minor axis length of ellipse is slightly less than the radius of inner race cylindrical.

The beneficial effects of the utility model are: this pair retainer wedge block type clutch, and its processing technology is simple, and cost is low, and has guaranteed can not produce relative rotation between outer retainer and the outer race.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the axial front view of the specific embodiment of of the present utility model pair of retainer wedge block type clutch;

Fig. 2 is the radial cross section view of Fig. 1, has omitted inner and outer race;

Fig. 3 is the axial front view of the outer retainer in the specific embodiment of of the present utility model pair of retainer wedge block type clutch;

Fig. 4 is the radial cross section view of Fig. 3;

Fig. 5 is the axial front view in the Wedge type over running clutch of prior art;

Fig. 6 is the radial cross section view of Fig. 5, has omitted inner and outer race;

Fig. 7 is the axial front view of the outer retainer in the Wedge type over running clutch of prior art.

Among the figure: 1, spring sheet, 2, interior retainer, 3, outer retainer, 3 ', existing outer retainer, 4, voussoir, 5, outer race, 6, inner race, 7, outward flange, 7 ', "T"-shaped otch, 8 ', otch, a, oval major semi axis are long, the semi-minor axis of b, ellipse is long, and radius of a circle is long in R, the outer race.

Embodiment

In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

The specific embodiment of of the present utility model pair of retainer wedge block type clutch shown in Fig. 1-4, it comprises outer race 5 with inner circumference raceway surface and the inner race with excircle raceway surface 6 that is arranged on outer race 5 concentric shafts, outer race 5 and inner race 6 be coaxial rotation mutually, be provided with a plurality of voussoirs 4 that are used for transmitting torque between outer race 5 and the inner race 6, voussoir 4 is supported between outer race 5 and the inner race 6 by the outer retainer 3 of cylinder annular and the interior retainer 2 of cylinder annular, be equipped with on the voussoir 4 along the spring sheet 2 of wedging direction precompressed voussoir 4, one end of outer retainer 3 is provided with outward flange 7, the external frame of outward flange 7 is oval, the oval long a of major semi axis is slightly larger than the long R of radius of a circle in the outer race 5, and the oval long b of semi-minor axis is slightly less than the long R of radius of inner race 6 cylindricals.

Outer retainer 3 has increased an outward flange 7, and the external frame of outward flange 7 parts is designed to ellipse, by the micro-deformation of ellipse, it is clamped in the outer race 5.Oval-shaped outward flange 7 is as long as just can finish by a punching press or turning, and the processing of the "T"-shaped otch 7 ' of the outer retainer 3 ' in the existing Wedge type over running clutch just relatively wants loaded down with trivial details many, therefore this improvement has reduced manufacturing procedure, improve manufacturing efficiency, reduced cost.And existing with "T"-shaped otch 7 ' outer retainer Wedge type over running clutch in use, the elasticity of its "T"-shaped otch 7 ' can fail gradually along with using process, and clutch was lost efficacy, its performance guarantees scarce capacity; And the outward flange 7 of of the present utility model pair of retainer wedge block type clutch China and foreign countries retainer 3 adopts oval design, and its processing dimension is stable, and elasticity capacity is reliable, and clutch is not easy to lose efficacy, and also improved relatively its working life.

Therefore in the practice process, two retainer wedge block type clutches not only can be packed in the outer race 5 very easily, but also can guarantee can not produce relative rotation between two retainer wedge block type clutches and the outer race 5.

With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims

1. two retainer wedge block type clutch, comprise outer race (5) and be arranged on the inner race with excircle raceway surface (6) on outer race (5) concentric shafts with inner circumference raceway surface, described outer race (5) and inner race (6) be coaxial rotation mutually, be provided with a plurality of voussoirs (4) that are used for transmitting torque between outer race (5) and the inner race (6), described voussoir (4) is supported between outer race (5) and the inner race (6) by the outer retainer (3) of cylinder annular and the interior retainer (2) of cylinder annular, spring sheet (1) along wedging direction precompressed voussoir (4) is housed on the voussoir (4), it is characterized in that, one end of described outer retainer (3) is provided with outward flange (7), the external frame of described outward flange (7) is oval, the major semi axis of described ellipse long (a) is slightly larger than the interior radius of a circle of outer race (5) long (R), and oval semi-minor axis long (b) is slightly less than the radius long (R) of inner race (6) cylindrical.