CN205315552U

CN205315552U - Embedded cam isolator

Info

Publication number: CN205315552U
Application number: CN201520994082.6U
Authority: CN
Inventors: 游宏亮
Original assignee: Chongqing Huayang Isolator Manufacturing Co Ltd
Current assignee: Chongqing Huayang Isolator Manufacturing Co Ltd
Priority date: 2015-12-05
Filing date: 2015-12-05
Publication date: 2016-06-15
Anticipated expiration: 2025-12-05

Abstract

The utility model discloses an embedded cam isolator, embedded cam isolator includes outer loop, inner ring, cam, baffle, outer loop and inner ring are the ring structure, still be provided with the keyway on the endocyclic internal surface, and the inner ring are installed in the outer loop, the baffle is steel annular flat plate to fix the one end at the outer loop, its characterized in that, the inner ring setting just is clearance fit with inner ring and outer loop in the hole of outer loop, be equipped with a plurality of evenly distributed's half slot on the endocyclic outer wall, every half slot corresponds a cam, and the cam setting is in the half slot, and the face of cam and half slot contact also is the semicircle cambered surface, has offered the notch on the lateral wall of half slot, and has inserted the leaf spring in the notch, had a scarf on the cam, the leaf spring stretch out the end pressure on the scarf of cam, the cam still sticiss on the inner wall of outer loop in addition. The product structure has not only been simplified to this patent, and adopts the cam voussoir, has effectively improved the clutch lift, the emergence of the phenomenon that prevents to skid.

Description

A kind of embedded cam isolator

Technical field

This utility model relates to a kind of isolator, particularly relates to a kind of embedded cam isolator.

Background technology

When automobile engine starting, first being driven the flywheel turns of electromotor by starter, then electromotor could start; But after engine ignition starts, the rotating speed of its flywheel can surmount rapidly the rotating speed of starter motor, the drive starter motor reverse in order to avoid electromotor rotates, therefore between electromotor and starter, it is provided with isolator, it is again freewheel clutch, therefore, exceed the rotating speed of starter motor at the rotating speed of electromotor after, isolator is by separated, thus avoiding driven by engine starter motor to rotate.

Also isolator can be used when gearshift, when by top gear shift to low gear, high gear has just been departed from due to output shaft, so output shaft still has a higher rotating speed, therefore after output shaft is connected with low-speed gear, make output shaft and low-speed gear have an identical speed to be accomplished by output shaft and have a moderating process, otherwise output shaft will reversely drive low-speed gear to rotate, or make low-speed gear occur beating tooth phenomenon, impact thus gear is formed, make gear damaged rapidly, therefore in electric motor car, it is also provided with isolator, prevent output shaft from reversely driving low-speed gear.

Therefore isolator is widely used, and existing a kind of freewheel clutch is made up of inner ring, outer ring, retainer, spring and voussoir, and not only structure is more complicated, and also often because bearing capacity is not enough, voussoir skids, and causes clutch to lose efficacy.

Utility model content

The purpose of this utility model is to be susceptible to, for solution prior art middle roller, the problem causing clutch to lose efficacy of skidding, and is thus provided that a kind of embedded cam isolator.

The embedded cam isolator of base case of the present utility model, including outer shroud, internal ring, cam, baffle plate; Described outer shroud and internal ring are circular ring structure, and the inner surface of described internal ring is additionally provided with keyway, and internal ring is arranged in outer shroud; Described baffle plate is steel ring plate, and is fixed on one end of outer shroud; Described internal ring is arranged in the endoporus of outer shroud, and is matched in clearance with internal ring and outer shroud; The outer wall of described internal ring is provided with multiple equally distributed half slot, the corresponding cam of each half slot, and cam is arranged in half slot, and cam and half slot have the semicircle cambered surface contacted with each other; Offering notch on the sidewall of described half slot, and notch has been inserted into leaf spring, and described cam has a wedge surface, the external part of leaf spring is pressed on the wedge surface of cam; Additionally cam is also pressed on the inwall of described outer shroud.

In this base case, outer shroud is fixing with low-speed gear to be connected, and internal ring is connected with output axle key;During work, low-speed gear will drive outer shroud to rotate, if the rotating speed of output shaft is lower than low-speed gear, then low-speed gear is as driving link, namely low-speed gear will rotate counterclockwise relative to output shaft, effect due to leaf spring, cam is close on the inwall of outer shroud, therefore when outer shroud rotates, frictional force will be produced between cam and outer shroud, under the effect of this frictional force, cam also will rotate counterclockwise, but when cam rotates counterclockwise, the surface of cam is by tighter with what fitted in the surface of the inner surface of outer shroud and internal ring half slot, therefore the frictional force between cam and outer shroud will become big, to such an extent as to outer shroud will not relative to cam slide, then outer shroud will drive internal ring to rotate, namely low-speed gear drives output shaft rotation. when the rotating speed of output shaft exceedes low-speed gear, then output shaft is as driving link, namely the effect of the frictional force that cam is subject to will be contrary, now cam the clockwise under influence in frictional force is rotated, namely the trend that the inwall having with outer shroud is separated by the surface of cam, therefore cam will reduce with the frictional force of outer shroud, thus outer shroud again will relative to cam slide, namely internal ring can not drive outer shroud to rotate.

Owing to cam is hinged on the periphery of internal ring in this programme, therefore cam does not have crooked phenomenon and the effect that cam increases cam with the frictional force of outer shroud along with the rotation of outer shroud has, so not easily there is skidding, thus having higher reliability; And cam is arranged between internal ring and outer shroud, and directly contact with internal ring outer shroud, therefore cam energy directly bearing load, owing to contact area is relatively big, so having bigger bearing capacity; Additionally this utility model does not need retainer, simplifies product structure, thus being prone to processing.

Preferred version one, as the further optimization to base case, the half slot on described internal ring is provided with six altogether; Described half slot is too much, then need to reduce cam size, and to meet installing space, but cam is too little, is unfavorable for processing and assembling, and half slot is very few, then cam is also required to corresponding minimizing, then the power that each cam undertakes will increase, and therefore abrasion will aggravate.

Preferred version two, as the further optimization to base case, described baffle plate is fixed by screw equally distributed on circumference and described outer shroud; Baffle plate is provided with by screw and is beneficial to dismounting, consequently facilitating repair.

Preferred version three, as the further optimization to base case, the keyway on described interior ring inner surface is spline; Internal ring and output shaft adopt spline fitted to be conducive to installing.

Preferred version four, as the further optimization to base case, described cam is made up of multiple lamellar bodies, and each lamellar body can independently rotate; Due to the error of cam or because vibrations all can make cam will appear from the situation of unbalance stress, therefore can make outer shroud that catching phenomenon occurs; And cam is made up of multiple lamellar bodies, and each lamellar body can independently rotate, then, when the somewhere of cam stress occurs by little situation, on cam, corresponding lamellar body can rotate accordingly, thus providing compensation.

Accompanying drawing explanation

Fig. 1 is the structure chart of embedded cam isolator embodiment;

Fig. 2 is the profile of embedded cam isolator embodiment outer shroud, internal ring and cam engagement;

Fig. 3 is the enlarged drawing of part A in Fig. 1.

Detailed description of the invention

Below by detailed description of the invention, this utility model is described in further detail:

Accompanying drawing labelling in Figure of description includes: outer shroud 1, baffle plate 2, internal ring 3, cam 4, low-speed gear 5, output shaft 6, half slot 31, leaf spring 32, lamellar body 41.

Embodiment is substantially as shown in Figure 1: embedded cam isolator includes outer shroud 1, internal ring 3, cam 4, baffle plate 2. Wherein, outer shroud 1 and internal ring 3 are circular ring structure, and outer shroud 1 is connected with low-speed gear 5, and the inner surface of internal ring 3 is additionally provided with spline, and to be connected with output shaft 6, and internal ring 3 is arranged in outer shroud 1; Baffle plate 2 is steel ring plate, and is fixed with outer shroud 1 by equally distributed screw on circumference. Internal ring 3 is arranged in the endoporus of outer shroud 1, and is matched in clearance with internal ring 3 and outer shroud 1; The outer wall of internal ring 3 is provided with six equally distributed half slots 31, the corresponding cam 4 of each half slot 31, cam 4 is arranged in half slot 31, and the face that cam 4 contacts with half slot 31 is also for semicircle cambered surface, the semicircle cambered surface of its cam 4 is convex surface, and the semicircle cambered surface of half slot 31 is concave surface, when cam 4 coordinates with half slot 31, convex surface is inserted in concave surface; At half slot 31 wall trench mouth, and notch has been inserted into leaf spring 32, and also has a wedge surface on cam 4, and the external part of leaf spring 32 is pressed on the wedge surface of cam 4; Additionally, due to the pressuring action of leaf spring 32, cam 4 is also pressed on the inwall of outer shroud 1.

As shown in Figure 2, during work, drive outer shroud 1 is rotated by low-speed gear 5, if the rotating speed of output shaft 6 is lower than low-speed gear 5, then low-speed gear 5 is as driving link, namely low-speed gear 5 will rotate counterclockwise relative to output shaft 6, effect due to leaf spring 32, cam 4 is close on the inwall of outer shroud 1, therefore when outer shroud 1 rotates, frictional force will be produced between cam 4 and outer shroud 1, under the effect of this frictional force, cam 4 also will rotate counterclockwise, but when cam 4 rotates counterclockwise, the surface of cam 4 by with outer shroud 1 inner surface and internal ring 3 half slot 31 surface laminating tighter, therefore the frictional force between cam 4 and outer shroud 1 will become big, to such an extent as to outer shroud 1 will not slide relative to cam 4, then drive internal ring 3 is rotated by outer shroud 1, namely low-speed gear 5 drives output shaft 6 to rotate. when the rotating speed of output shaft 6 exceedes low-speed gear 5, then output shaft 6 is as driving link, namely the effect of the frictional force that cam 4 is subject to will be contrary, now cam 4 the clockwise under influence in frictional force is rotated, namely the trend that the inwall having with outer shroud 1 is separated by the surface of cam 4, therefore cam 4 will reduce with the frictional force of outer shroud 1, thus outer shroud 1 will slide relative to cam 4 again, namely internal ring 3 can not drive outer shroud 1 to rotate.

As it is shown on figure 3, additionally, due to the error of cam 4 or because vibrations all can make cam 4 will appear from the situation of unbalance stress, therefore can make outer shroud 1 that catching phenomenon occurs; Therefore to overcome cam 4 to make cam 4 that the situation that local pressure is uneven to occur because of error or vibrations, therefore cam 4 is divided into multi-disc, namely cam 4 is made up of multiple lamellar bodies 41, and each lamellar body 41 can independently rotate, then when the somewhere of cam 4 stress occurs by little situation, on cam 4, corresponding lamellar body 41 can rotate accordingly, thus providing compensation.

Claims

1. an embedded cam isolator, including outer shroud, internal ring, cam, baffle plate; Described outer shroud and internal ring are circular ring structure, and the inner surface of described internal ring is additionally provided with keyway, and internal ring is arranged in outer shroud; Described baffle plate is steel ring plate, and is fixed on one end of outer shroud; It is characterized in that, described internal ring is arranged in the endoporus of outer shroud, and is matched in clearance with internal ring and outer shroud; The outer wall of described internal ring is provided with multiple equally distributed half slot, the corresponding cam of each half slot, and cam is arranged in half slot, and cam and half slot have the semicircle cambered surface contacted with each other; Offering notch on the sidewall of described half slot, and notch has been inserted into leaf spring, and described cam has a wedge surface, the external part of leaf spring is pressed on the wedge surface of cam; Additionally cam is also pressed on the inwall of described outer shroud.

2. embedded cam isolator according to claim 1, it is characterised in that the half slot on described internal ring is provided with six altogether.

3. embedded cam isolator according to claim 1, it is characterised in that described baffle plate is fixed by screw equally distributed on circumference and described outer shroud.

4. embedded cam isolator according to claim 1, it is characterised in that the keyway on described interior ring inner surface is spline.

5. embedded cam isolator according to claim 1, it is characterised in that described cam is made up of multiple lamellar bodies, and each lamellar body can independently rotate.