CN105370759B

CN105370759B - A kind of isolator of the anti-shell dropping structure of band

Info

Publication number: CN105370759B
Application number: CN201510841745.5A
Authority: CN
Inventors: 游宏亮
Original assignee: Chongqing Huayang Isolator Manufacturing Co Ltd
Current assignee: Chongqing Huayang Isolator Manufacturing Co Ltd
Priority date: 2015-11-28
Filing date: 2015-11-28
Publication date: 2018-10-16
Anticipated expiration: 2035-11-28
Also published as: CN105370759A

Abstract

This patent discloses a kind of isolators of the anti-shell dropping structure of band, are related to a kind of isolator shell；Isolator with anti-shell dropping structure includes shell, outer shroud, inner ring, compression spring, roller；Outer shroud and inner ring are circular ring structure, and inner ring, compression spring and roller are arranged in outer shroud；Outer shroud is stepped, and has conical surface transition from big end to small end；Shell is cylindrical in shape and covers the big end of outer shroud, and shell is stamped closing in, and is fitted on the conical surface of outer shroud；Due to being provided with multiple limit holes on the peripheral surface of the outer shroud big end of this isolator, and it is provided with the location hole corresponding to limit hole on the shell, and the periphery of location hole is recessed into limit hole downwards, this structure can enhance the fixation of shell and outer shroud, it effectively can prevent shell from falling off, and process simple.

Description

A kind of isolator of the anti-shell dropping structure of band

Technical field

The present invention relates to a kind of isolator more particularly to a kind of isolators of the anti-shell dropping structure of band.

Background technology

In automobile engine starting, the flywheel turns of engine are first driven by starter, then engine can just open It is dynamic；But after engine ignition starts, the rotating speed of flywheel can surmount rapidly the rotating speed of starter motor, in order to avoid engine is reversed Drive starter motor rotation, therefore between engine and starter be provided with isolator, be called freewheel clutch, therefore sending out After the rotating speed of motivation is more than the rotating speed of starter motor, isolator will be detached, to avoid driven by engine starter motor from rotating.

Isolator can be also used in shift, when by top gear shift to low gear, since output shaft has just been detached from high speed tooth Wheel, so output shaft still have there are one higher rotating speed, therefore after output shaft is connect with low-speed gear, to make output shaft and There are one low-speed gear tools, and identical speed just needs moderating process there are one output shafts, and otherwise output shaft will reversely drive low Fast gear rotation, or low-speed gear appearance is made to beat tooth phenomenon, it is impacted to be formed to gear, so that gear is damaged rapidly, therefore It is also provided with isolator on electric vehicle, prevents output shaft from reversely driving low-speed gear.

Therefore unidirectional application range is extremely wide, and currently, in mostly unidirectional device, shell and outer shroud are all to use close-fitting The mode of conjunction is assembled, and shell and outer shroud are in the long-term use, it may occur that is loosened, the micro-strain of shell can all cause shell It is detached from home position between guide cylinder, influences the service life of isolator, causes the security risk of car steering.Although there is portion Electric motor of automobile isolator is divided to be provided with shell anti-drop structure, but for factors such as manufacturing cost, mounting process；Although also having one A little simple anti-drop structures, but be not easy to assemble, and anticreep is ineffective.

Invention content

The invention is intended to provide a kind of isolator of the anti-shell dropping structure of band, this isolator with anti-shell dropping structure It can effectively prevent shell from falling off or loosen, extend isolator service life.

The isolator of the anti-shell dropping structure of base case band of the present invention, including shell, outer shroud, inner ring, compression spring, rolling Column；The outer shroud and inner ring are circular ring structure, and inner ring, compression spring and roller are arranged in outer shroud；The outer shroud is in ladder Shape, and there is conical surface transition from big end to small end；Shell is cylindrical in shape and covers the big end of outer shroud, and shell is stamped closing in, and pastes It closes on the conical surface of outer shroud；Multiple limit holes are provided on the peripheral surface of the outer shroud big end, and are provided with correspondence on the shell It is recessed into location hole downwards in the periphery of the location hole of limit hole, and location hole.

This base case should first process limit hole and location hole, shell is then set in outer shroud when installing shell Big end is used in combination press machine to carry out necking to shell, shell is made to be adjacent on the conical surface of outer shroud；Then rotation case makes on shell Circular hole alignment outer shroud on limit hole, then use pin alignment housings on location hole, and tap pin make casing deformation to Lower recess, to effectively strengthen the connection of shell and outer shroud.

This programme not only effectively extends the service life of isolator, but also the construction letter of the anti-drop structure of this shell Single, handling ease has saved material and time cost；But also can prevent shell from being relatively rotated with outer shroud, to multidirectional Enhance the connection effect of shell and outer shroud, reduces the burden at shell necking.

Preferred embodiment one, advanced optimizes as to base case, and the limit hole is taper hole, and the location hole Periphery be fitted on the conical surface of limit hole；Limit hole is set as taper hole, is conducive to the change on the location hole periphery in controling shell Shape amount when to avoid im-pact location hole, keeps positioning bore deformation excessive, to destroy shell；Or make the intensity on location hole periphery It is lower, to make location hole easily be destroyed, to which consolidation effect be not achieved.

Preferred embodiment two, advanced optimizes as to base case, and a rubber is provided between the shell and outer shroud Gum cover；Rubber sleeve has cushioning effect to shell, can directly be collided with outer shroud to avoid shell when vibrations, to aggravate shell Deformation.

Preferred embodiment three, advanced optimizes as to base case, and the conical surface of the outer shroud is corresponded on the shell The multiple circular holes of Duan Kaishe；Shell be stamped closing in when, due to deformation, so enclosure interior leaves internal stress, therefore shaking Breakage is easily generated in the case of dynamic, and opening up circular hole in deformation section has the function of eliminating internal stress.

Description of the drawings

Fig. 1 is the installation diagram of the isolator embodiment with anti-shell dropping structure；

Fig. 2 is the partial enlarged view of part A in Fig. 1.

Specific implementation mode

Below by specific implementation mode, the present invention is described in further detail：

Reference numeral in Figure of description includes：Outer shroud 1, shell 2, inner ring 3, roller 4, low-speed gear 5, output shaft 6, Rubber sleeve 7, limit hole 11, location hole 21, circular hole 22.

As shown in attached drawing 1, Fig. 2, the isolator of anti-2 dropping structure of shell of band of the present embodiment includes shell 2, outer shroud 1, interior Ring 3, compression spring, roller 4 etc..Wherein outer shroud 1 and inner ring 3 are circular ring structure, and inner ring 3, compression spring and roller 4 are arranged at outer shroud In 1, also set up on 3 outer wall of inner ring there are six equally distributed wedge groove, ball 4 is located in wedge groove, one end top pressure of compression spring On the side wall of wedge groove, and other end top pressure is on roller 4.Outer shroud 1 is stepped, and has conical surface mistake from big end to small end It crosses；And the big end of 2 sets of outer shrouds 1 of shell, the small end of outer shroud 1 are then connected with low-speed gear 5.Shell 2 is cylindrical in shape, and the bottom of shell 2 There are one circular holes 22 for portion's setting, and so that output shaft 6 passes through, and the open end of shell 2 is closed up, and is fitted on the conical surface of outer shroud 1； Shell 2 is limited with this.

In order to further strengthen the fastening effect of shell 2 and outer shroud 1, it is provided on the peripheral surface of 1 big end of outer shroud several The limit hole 11 of taper, and each limit hole 11 is staggered, and correspond on shell 2 at limit hole 11, it is provided with positioning, it is fixed The size in position hole 21 is only the 20% of 11 maximum gauge of limit hole.

When shell 2 is installed, shell 2 is first set in 1 big end of outer shroud, necking then is carried out to shell 2 with press machine, made outer Shell 2 is adjacent on the conical surface of outer shroud 1；Then rotation case 2 make the location hole 21 on shell 2 be directed at the limit hole on outer shroud 1 11, the location hole 21 in pin alignment housings 2 is then used, and tapping pin makes shell 2 deform to lower recess, is fitted in limit hole On 11 walls, to effectively strengthen the connection of shell 2 and outer shroud 1.After being deformed due to shell 2, answering for 2 surface of shell can be caused Power changes, therefore limit hole 11 is staggered, and can disperse 2 surface stress of shell, and can open shell 2 using this stress Tightly, the connection of further stiffened shell 2 and outer shroud 1.In addition can not have to that all location holes 21 is made all to generate when installing shell 2 Deformation, when shell 2 generates loosening, to be reinforced to it.

In order to avoid shell 2 is directly collided with outer shroud 1 when vibrations, to aggravate the deformation of shell 2, in shell 2 and outer shroud 1 Between be also provided with a rubber sleeve 7, rubber sleeve 7 has cushioning effect in vibrations, to shell 2.

Shell 2 be stamped closing in when, due to deformation, so enclosure interior leaves internal stress, therefore the vibrations the case where Under easily generate it is damaged, so also eight circular holes 22 have been opened at the closing in end of shell 2 after the closing in of shell 2, to eliminate stress.

Claims

1. a kind of isolator of the anti-shell dropping structure of band, including shell, outer shroud, inner ring, compression spring, roller；The outer shroud and interior Ring is circular ring structure, and inner ring, compression spring and roller are arranged in outer shroud, is additionally provided on the outer wall of inner ring multiple uniform The wedge groove of distribution, the roller are located in wedge groove, and on the side wall of wedge groove, other end top pressure exists one end top pressure of compression spring On roller；The outer shroud is stepped, and has conical surface transition from big end to small end；Shell is cylindrical in shape and covers the big end of outer shroud, And shell is stamped closing in, and be fitted on the conical surface of outer shroud；It is characterized in that, being provided on the peripheral surface of the outer shroud big end Multiple limit holes, and each limit hole is staggered on the shell, and it is provided with the location hole corresponding to limit hole on the shell, and The periphery of location hole is recessed into location hole downwards, when installing shell, uses the location hole in pin alignment housings and percussion Pin makes casing deformation to lower recess, is fitted on limit hole wall, and without making all location holes all be deformed, in order to When shell generates loosening, shell can be reinforced.

2. the isolator of the anti-shell dropping structure of band according to claim 1, which is characterized in that the limit hole is cone Hole, and the periphery of the location hole is fitted on the conical surface of limit hole.

3. the isolator of the anti-shell dropping structure of band according to claim 1, which is characterized in that the shell and outer shroud Between be provided with a rubber sleeve.

4. the isolator of the anti-shell dropping structure of band according to claim 1, which is characterized in that correspond on the shell The conical surface section of the outer shroud has opened up multiple circular holes.