CN103591179A - Back stop - Google Patents
Back stop Download PDFInfo
- Publication number
- CN103591179A CN103591179A CN201210436550.9A CN201210436550A CN103591179A CN 103591179 A CN103591179 A CN 103591179A CN 201210436550 A CN201210436550 A CN 201210436550A CN 103591179 A CN103591179 A CN 103591179A
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- China
- Prior art keywords
- rotating ring
- driving wheel
- assembly
- pin
- return device
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Abstract
The invention discloses a back stop which is used for solving problems of low transmission speed, complicated structure and noise of an existing back stop mechanism and comprises a fixed assembly and a movable assembly. The fixed assembly comprises a fixed ring, and the movable assembly comprises a movable ring assembly, a driving wheel, rolling elements and peripheral elastic parts; the movable ring assembly comprises a movable ring and axial convex pins, and the rolling elements and the peripheral elastic parts are positioned in a cavity formed by the movable ring and the fixed ring; pin holes or pin grooves are formed in the driving wheel, and the axial convex pins of the movable ring assembly extend into the pin holes or pin grooves in the driving wheel; radial elastic parts are arranged between the movable ring assembly and the fixed assembly. The back stop has the advantages that when the back stop is static, the rolling elements and the movable ring are in self-lock states under the effect of elasticity of the peripheral elastic parts; when the back stop is driven, torque is exerted on the driving wheel, unlocking jaws of the driving wheel push the rolling elements, so that the rolling elements and the movable ring are in unlock states, the inner walls of the pin holes or pin grooves in the driving wheel drive the axial convex pins, and the movable ring can be driven to rotate.
Description
Technical field
The present invention relates to mechanical transmission, refer in particular to a kind of non-return device.
Background technique
In mechanical transmission fields, non-return device refers to and a kind ofly by input end, to output terminal, transmits power or moment and output terminal can not transmit to input end the mechanical transmission of power or moment.That is when applying power or moment at output terminal, output terminal automatic locking ，Gu Jiangzhe class mechanism is called non-return device.
Modal non-return device comprises worm and worm gear, ratchet mechanism etc.
Worm and worm gear reduction speed ratio is large, and transmission speed is slow.
For ratchet mechanism, when driving direction is only a rotation direction (just clockwise direction or just counter clockwise direction), adopt common ratchet mechanism to be easy to realize output terminal automatic locking; But when requiring input end both can drive clockwise, also can drive counterclockwise, and output terminal is all can automatic locking time, and it is complicated that ratchet mechanism will become; And have obvious manipulation noise, in the occasion that requires to control noise, in driver's cab of sedan, ratchet mechanism just can not be used because of noise problem.
Summary of the invention
The technical problem to be solved in the present invention is that existing non-return device mechanism driving speed is slow, complex structure, noisy problem.
Technological scheme of the present invention is described below.
The present invention is a kind of non-return device, be a kind of by input end to output terminal transmitting torque and output terminal can not be to the mechanical transmission of input end transmitting torque clockwise or counterclockwise.It comprises fixing-assembly, motion assembly, and fixing-assembly comprises fixed ring, and motion assembly comprises rotating ring group, driving wheel, rolling element, circumferential elastic component, and rotating ring group comprises rotating ring, and rolling element and circumferentially elastic component are positioned at the cavity of rotating ring and fixed ring formation.
Fixing-assembly also comprises fixed plate, and fixed plate and fixed ring are fixed together by the method for riveted joint or spiral marking connection.
Driving wheel is input end, driving wheel all or part be positioned at fixed ring, on driving wheel, have the pusher dog of protrusion, the protrusion length of pusher dog approximately equates with rolling element length.
Rotating ring group is output terminal, and rotating ring group at least comprises rotating ring, and rotating ring is positioned at the hole of fixed ring, has the pressure-bearing limit of curve or rectilinear form on rotating ring.The hole shape wedgewise space of the pressure-bearing limit of rotating ring and fixed ring, rolling element is positioned at this wedge shape space.
Rotating ring group can also comprise round platform and the small gear being fixed together with rotating ring.
Circumferentially elastic component can be stage clip, flat spring, block rubber or other class elastic part, and circumferentially elastic component is close to rolling element installation.During state of rest, under the effect of circumferential elastic component elastic force, rolling element is pushed to the little extreme direction of wedge shape space, makes fixed ring, rotating ring, rolling element in engagement self-locking state.
Important feature of the present invention is: rotating ring group also comprises axial protruding pin, has pin-and-hole or cotter way on driving wheel, and axially protruding pin stretches in pin-and-hole or cotter way; Between rotating ring group and fixing-assembly, there is radial elastic part.
Axially protruding pin can be pin, and this pin and rotating ring are fixed together, and pin can adopt the same with driving wheel or similar material; Axially protruding pin can be also that convex closure, this convex closure of rotating ring are parts for rotating ring.Axially protruding pin stretches in the pin-and-hole or cotter way of driving wheel, and has radial clearance with pin-and-hole or cotter way.
Radial elastic part between rotating ring group and fixing-assembly plays a part to eliminate the radial clearance between rotating ring group and fixed ring, and radial elastic part can be resilient key, and this resilient key is arranged in the groove that extends radially out pawl of rotating ring; Radial elastic part can be also lasso, and this lasso is between the round platform of rotating ring group and the flange of fixed plate, and lasso has certain elasticity, can make with rubber parts or working of plastics, also can make with spring steel material; Radial elastic part can also be the resilient key between the round platform of rotating ring group and the flange of fixed plate.
Working procedure of the present invention is as follows:
When not applying driving moment on driving wheel (input end), rolling element is pushed to the small end of wedge shape space by circumferential elastic component, according to the ABC of Der Grundsatz der Maschinen, as long as select rightly the shape and size on rotating ring pressure-bearing limit, rolling element, rotating ring, fixed ring three are just in self-locking state.If now rotating ring (output terminal) is applied to moment of torsion, because rotating ring is in self-locking state, can not be to driving wheel (input end) transmitting torque.
When driving, on driving wheel (input end), apply moment of torsion, the pusher dog of driving wheel overcomes the elastic force of circumferential elastic component and rolling element is pushed to the large extreme direction of wedge shape space, rolling element and rotating ring are just in released state, when driving wheel is rotated further, because axial protruding pin is positioned at pin-and-hole or the cotter way of driving wheel, make the pin-and-hole of driving wheel or the inwall driving axial protruding pin of cotter way, thereby drive rotating ring (output terminal) to rotate, that is moment of torsion is transmitted to output terminal by input end; When stopping applying moment of torsion on driving wheel, rolling element is pushed again to the small end of wedge shape space by circumferential elastic component, and rolling element, rotating ring, fixed ring three are again in self-locking state.
The good result that the present invention compared with prior art has is:
Compare with worm and worm gear, the present invention directly drives rotating ring by driving wheel, and rotating ring is consistent with the rotating speed of driving wheel, there is no moderating process, thereby the present invention has the good result of quick transmission.
Compare with ratchet mechanism, the present invention is all realizing and driving and self-locking clockwise and counterclockwise, simple in structure, and owing to having adopted the principle of friction self-locking, working procedure noiseless.
Accompanying drawing explanation
Fig. 1 embodiment one schematic diagram.
Fig. 2 is that the A--A of Fig. 1 is to cross-sectional schematic.
Fig. 3 is that the B--B of Fig. 1 is to generalized section.
Fig. 4 is the schematic diagram after the rotating ring of Fig. 2 of embodiment one is improved.
Fig. 5 is embodiment two schematic diagram.
Fig. 6 is the schematic diagram of the C--C section of Fig. 5.
Fig. 7 is the schematic diagram of the D--D section of Fig. 5.
Embodiment
Now by reference to the accompanying drawings embodiments of the present invention are described.
Fig. 1 is embodiment one schematic diagram.
In Fig. 1,1 is that fixed ring, 2 is that fixed plate, 3 is that rolling element (being herein roller), 4 is that rotating ring, 6 is that driving wheel, 7 is that pin, 8 is that cover plate, 9 is that axial elasticity part, 10 is flat gasket.
In Fig. 1, fixed ring 1, fixed plate 2, cover plate 8 use riveted joints or spiral marking connection or other modes are fixed together, and form fixing-assembly; Other part belongs to motion assembly.
In Fig. 1, pin 7 is fixed together and becomes rotating ring group with rotating ring 4, and affixed method comprises interference fit, bonding, welding or other method.Pin 7, rotating ring 4 and rolling element 3 are all positioned at the hole of fixed ring.
In Fig. 1, the pusher dog 602 that driving wheel 6 has base station 601 and protrudes, the length of pusher dog 602 is approximately identical with the length of roller 3, and the base station 601 of driving wheel and the pusher dog 602 protruding are all positioned at the hole of fixed ring; On the base station 601 of driving wheel, have pin-and-hole 603, pin 7 stretches in pin-and-hole 603.Some stretches out cover plate 8, the input end that this extension is the present embodiment driving wheel 6.
In Fig. 1, between cover plate 8 and driving wheel 6, there are axial elasticity part 9 and flat gasket 10, wherein flat gasket 10 is between axial elasticity part 9 and cover plate 8; Axial elasticity part 9 available waveforms packing rings or block rubber or other resilient part are made.
Fig. 2 is that the A--A of Fig. 1 is to cross-sectional schematic.
In Fig. 2,1 is that fixed ring, 2 is fixed plate, has mounting hole, for the present embodiment being arranged on to the occasion that needs use on fixed plate 2.
In Fig. 2,3 be rolling element (herein for roller), 4 for rotating ring, 5 for circumferential elastic component, 602 for the pusher dog of driving wheel, 7 be pin.Rotating ring 4 is positioned at the hole of fixed ring 1, has four to extend radially out pawl 401 on rotating ring 4, and rotating ring 4 relies on it to extend radially out pawl 401 to coordinate with the interporal lacuna of fixed ring 1; Have groove extending radially out on pawl 401, radial elastic part 11 be installed in groove, radial elastic part 11 can be resilient key or other elastic type part as rubber parts, radial elastic part 11 works to eliminate the radial clearance of rotating ring 4 and fixed ring 1.Two both sides that extend radially out pawl up and down of rotating ring 4 are all installed with circumferential elastic component 5, and the both sides that two of the left and right of rotating ring 4 extend radially out pawl are all installed with pusher dog 602.On rotating ring 4, have four pressure-bearing limits 402, the shape on pressure-bearing limit 402 can be curve or straight line.Four pressure-bearing limits 402 of rotating ring form four wedge shape spaces with the hole of fixed ring 1, and four rolling elements 3 are positioned at four wedge shape spaces.On rotating ring 4, have flat square hole, flat square hole is used for connecting load.
In Fig. 2, circumferentially elastic component 5 extends radially out between pawl 401 and rolling element 3 at rotating ring, and circumferentially elastic component 5 provides the elastic force of circumferencial direction, rolling element 3 is pushed to the little extreme direction of wedge shape space.
Fig. 3 is that the B--B of Fig. 1 is to generalized section.
In Fig. 3,1 is fixed ring, and 601 base stations that are driving wheel, have pin-and-hole 603 on base station 601; 7 is pin, and pin 7 is positioned at pin-and-hole 603, and pin 7 has radial clearance with pin-and-hole 603.
Now, in conjunction with Fig. 1, Fig. 2, Fig. 3, the working procedure of the present embodiment one is described below:
When static, rolling element 3 is pushed to the little extreme direction of the wedge shape space of the pressure-bearing limit 402 of rotating ring 4 and the hole formation of fixed ring 1 by circumferential elastic component 5, according to the ABC of Der Grundsatz der Maschinen, as long as the shape and size on choose reasonable rotating ring pressure-bearing limit 402, rolling element 3, rotating ring 4, fixed ring 1 three are just in self-locking state.
When driving, on driving wheel 6, apply moment of torsion, after pusher dog 602 fine rotation of driving wheel 6, contact with rolling element 3, and the elastic force that overcomes circumferential elastic component 5 to push rolling element 3 to the large extreme direction of wedge shape space, rolling element 3 and rotating ring 4 are just in released state; Driving wheel 6 is rotated further, and the inwall of the pin-and-hole 603 of driving wheel 6 contacts with pin 7, drives pin 7, thereby drives rotating ring 4 to rotate; When stopping applying moment of torsion on driving wheel 6, rolling element 3 is pushed again to the little extreme direction of wedge shape space by circumferential elastic component 5, and rotating ring 4 and rolling element 3 are again in self-locking state.
The present embodiment 1 therefore realize moment of torsion by input end to the stepless transmission of output terminal, and the effect of output terminal stageless self-locking, and simple in structure, transmission speed fast, work noiseless.
Fig. 4 is the schematic diagram after the rotating ring of Fig. 2 of embodiment one is improved.
In Fig. 4,1 is that fixed ring, 2 is fixed plate; 3 is that rolling element, 4 is pin for the pusher dog of driving wheel, 7 for circumferential elastic component, 602 for rotating ring, 5.Rotating ring 4 is positioned at the hole of fixed ring 1, has two to extend radially out pawl 404 on rotating ring 4, and rotating ring 4 relies on it to extend radially out pawl 404 to coordinate with the interporal lacuna of fixed ring 1; There is groove extending radially out on pawl 404, radial elastic part 11 is installed in groove.Circumferentially elastic component 5 is between two rolling elements 3.The working procedure of Fig. 4 is consistent with Fig. 2.
In the present embodiment one, while driving driving wheel, fixed ring and rotating ring, rolling element three are in released state, while stopping driving driving wheel, fixed ring and rotating ring, rolling element three are in self-locking state, and any mechanical major personnel can be by selecting rotating ring, rolling element, roller three's size and dimension to realize this three's self-locking rightly; In order to improve self-locking effect, the sunk surface that strengthens friction factor can be set on the hole wall of fixed ring, this sunk surface can be spiral chute, twill, reticulate pattern or pit etc.
Fig. 5 is embodiment two schematic diagram.
In Fig. 5,21 is that fixed ring, 22 is that fixed plate, 23 is that rolling element, 24 is that rotating ring, 26 is that driving wheel, 27 is that lasso, 28 is that cover plate, 29 is that axial elasticity part, 30 is that round platform, 31 is that small gear, 32 is that pad, 33 is rivet.
In Fig. 5, fixed ring 21, fixed plate 22, cover plate 28 are fixed together, and form fixing-assembly, have flange 221 on fixed plate 22.
In Fig. 5, rotating ring 24, round platform 30, small gear 31, pad 32 and rivet 33 form rotating ring group, and round platform 30 has projection to insert in the hole of rotating ring 24; Rivet 33 is through the center hole of rotating ring 24, round platform 30, small gear 31 and pad 32, and their riveted joints is as a whole.Round platform 30 is fixed together with small gear 31, and the two can be an one-piece parts; Also rotating ring 24, round platform 30, small gear 31 can be made to an one-piece parts.
In Fig. 5, rotating ring 24 has cap platform 2401 and convex closure 2402, the cap platform 2401 of rotating ring and the endoporus Spielpassung of fixed ring 21.Cap platform 2401 can be a part for rotating ring, also cap platform 2401 can be made to independent part and affixed or be combined together with rotating ring.
In Fig. 5, driving wheel 26 has base station 2601 and pusher dog 2602, the base station 2601 of driving wheel is positioned at the hole of fixed ring 21 and coordinates with the interporal lacuna of fixed ring 21, on the base station 2601 of driving wheel, has cotter way 2603, and the convex closure 2402 of rotating ring is positioned at the cotter way 2603 of driving wheel round platform.
In Fig. 5, driving wheel 26 is axially having central through bore, and central through bore is step hole, and step hole is convenient to driving wheel 26 and external drive part (as Joystick etc.) and is connect; The receiving bore 2604 that this step hole comprises driving wheel.The rivet head of pad 32 and rivet 33 is positioned at receiving bore 2604, and the size of pad 32 is less than the size of receiving bore 2604.
In Fig. 5, the length of pusher dog 2602 is approximately identical with the length of rolling element 23.Axial elasticity part 29 is between cover plate 28 and driving wheel 26.
Combine it, in the organization plan described in Fig. 5, rotating ring group comprises rotating ring 24, round platform 30, small gear 31, pad 32 and rivet 33, and rivet 33 is through the center hole of small gear 31, and the size of pad 32 is less than the size of the receiving bore 2604 of driving wheel 26.
Fig. 6 is the schematic diagram of the C--C section of Fig. 5.
In Fig. 6,21 is that fixed ring, 23 is that rolling element, 24 is that rotating ring, 25 is that circumferential elastic component, 2602 is the pusher dog of driving wheel.Circumferentially elastic component 25 is between rolling element 23, and rotating ring 24 forms a plurality of wedge shape spaces with the hole of fixed ring 21, and rolling element 23 is positioned at wedge shape space.In Fig. 6, there are eight rolling elements and four circumferential elastic components.The pusher dog 2602 of driving wheel is between rolling element 23.
Fig. 7 is the schematic diagram of the D--D section of Fig. 5.
In Fig. 7,21 for fixed ring, 2402 is for having cotter way 2603 on the base station 2601 of the convex closure of rotating ring, 2601 for the base station of driving wheel, driving wheel.The convex closure 2402 of rotating ring is positioned at the cotter way 2603 of driving wheel round platform and has radial clearance between the two.
Embodiment two working procedure and embodiment one are basically identical, repeat no more herein.
Claims (10)
1. a non-return device, it comprises fixing-assembly, motion assembly, described fixing-assembly comprises fixed ring, described motion assembly comprises rotating ring group, driving wheel, rolling element, circumferential elastic component, described rotating ring group comprises rotating ring, and described rolling element and described circumferential elastic component are positioned at the cavity of described rotating ring and the formation of described fixed ring, it is characterized in that: described rotating ring group also comprises axial protruding pin, on described driving wheel, have pin-and-hole or cotter way, described axial protruding pin stretches in described pin-and-hole or cotter way; Between described rotating ring group and described fixing-assembly, there is radial elastic part.
2. non-return device according to claim 1, is characterized in that: described axial protruding pin is pin, and described pin and described rotating ring are fixed together.
3. non-return device according to claim 1, is characterized in that: the convex closure that described axial protruding pin is rotating ring, described convex closure is a part for described rotating ring.
4. non-return device according to claim 1, is characterized in that: described radial elastic part is resilient key, and described resilient key is arranged in the groove that extends radially out pawl of described rotating ring.
5. non-return device according to claim 1, is characterized in that: described radial elastic part is lasso, and described lasso is between the round platform of described rotating ring group and the flange of the fixed plate of described fixing-assembly.
6. non-return device according to claim 1, is characterized in that: described radial elastic part is the resilient key between the round platform of described rotating ring group and the flange of the fixed plate of described fixing-assembly.
7. non-return device according to claim 1, is characterized in that: described fixing-assembly comprises cover plate, between described cover plate and described driving wheel, has axial elasticity part and flat gasket, and described flat gasket is between described axial elasticity part and described cover plate.
8. non-return device according to claim 1, is characterized in that: described rotating ring group also comprises small gear, pad and rivet, and described rivet is through the center hole of described small gear, and the size of described pad is less than the size of the receiving bore of described driving wheel.
9. non-return device according to claim 1, is characterized in that: described driving wheel is axially having central through bore, and described central through bore is step hole.
10. non-return device according to claim 1, is characterized in that: described rotating ring has cap platform, the endoporus Spielpassung of described cap platform and described fixed ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436550.9A CN103591179A (en) | 2012-11-06 | 2012-11-06 | Back stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436550.9A CN103591179A (en) | 2012-11-06 | 2012-11-06 | Back stop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103591179A true CN103591179A (en) | 2014-02-19 |
Family
ID=50081441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210436550.9A Pending CN103591179A (en) | 2012-11-06 | 2012-11-06 | Back stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103591179A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407679B (en) * | 2017-02-09 | 2020-07-31 | 上海汽车集团股份有限公司 | Angle regulator and handle assembly, car thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030089568A1 (en) * | 2000-04-20 | 2003-05-15 | Pascoe David Mark | Multi-directional coupling |
| US20070144854A1 (en) * | 2005-12-26 | 2007-06-28 | Denso Corporation | Two-way clutch |
| CN102128219A (en) * | 2010-12-16 | 2011-07-20 | 包头市蓝光齿轮有限公司 | Loading machine drum-type roller-type overrunning clutch |
| CN201934540U (en) * | 2011-03-09 | 2011-08-17 | 石光林 | Roller overrunning clutch |
| WO2012008851A1 (en) * | 2010-07-16 | 2012-01-19 | Eltorque As | Self lock mechanism for valve actuator |
| CN202883815U (en) * | 2012-11-06 | 2013-04-17 | 吴长钰 | Holdback machine |
-
2012
- 2012-11-06 CN CN201210436550.9A patent/CN103591179A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030089568A1 (en) * | 2000-04-20 | 2003-05-15 | Pascoe David Mark | Multi-directional coupling |
| US20070144854A1 (en) * | 2005-12-26 | 2007-06-28 | Denso Corporation | Two-way clutch |
| WO2012008851A1 (en) * | 2010-07-16 | 2012-01-19 | Eltorque As | Self lock mechanism for valve actuator |
| CN102128219A (en) * | 2010-12-16 | 2011-07-20 | 包头市蓝光齿轮有限公司 | Loading machine drum-type roller-type overrunning clutch |
| CN201934540U (en) * | 2011-03-09 | 2011-08-17 | 石光林 | Roller overrunning clutch |
| CN202883815U (en) * | 2012-11-06 | 2013-04-17 | 吴长钰 | Holdback machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407679B (en) * | 2017-02-09 | 2020-07-31 | 上海汽车集团股份有限公司 | Angle regulator and handle assembly, car thereof |
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Application publication date: 20140219 |