CN204432526U - The two clutch slipping device of automobile rear view mirror driver - Google Patents
The two clutch slipping device of automobile rear view mirror driver Download PDFInfo
- Publication number
- CN204432526U CN204432526U CN201520103577.5U CN201520103577U CN204432526U CN 204432526 U CN204432526 U CN 204432526U CN 201520103577 U CN201520103577 U CN 201520103577U CN 204432526 U CN204432526 U CN 204432526U
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- China
- Prior art keywords
- sleeve pipe
- wheel disc
- helical teeth
- teeth wheel
- lifting screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
The utility model discloses the two clutch slipping device of a kind of automobile rear view mirror driver, it comprises lifting screw (1) and is placed on the helical teeth wheel disc (2) rotated on lifting screw (1) and by peripheral driver driving, it is characterized in that: between described helical teeth wheel disc (2) and lifting screw (1), be provided with sleeve pipe (3), sleeve pipe (3) upper end is provided with the multiple pawl heads (4) along the distribution of sleeve pipe (3) circumference, the madial wall of each pawl head (4) is provided with respectively the convex tooth (4.1) matched with the outside thread of lifting screw (1), described helical teeth wheel disc (2) and sleeve pipe (3) flush fit, described sleeve pipe (3) is provided with the stop gear for limiting helical teeth wheel disc (2) axial motion.The utility model provides a kind of and breaks to preventing minute surface over travel during end position at mirror face turning, and the two clutch slipping device of the automobile rear view mirror driver that mirror face turning can not occur under larger External Force Acting.
Description
Technical field
The utility model relates to the technical field of automobile rear view mirror driver, specifically the two clutch slipping device of a kind of automobile rear view mirror driver.
Background technology
Automobile rearview mirror is mounted in the outdoor left and right sides of vehicle drive important accessory in front of the door, and it observes the scene after vehicle body for navigating mate, carries out safe driving and plays a part very important.And the regulating mechanism be arranged in automobile rearview mirror can realize the adjustable of rear-vision mirror face angle and visual range, thus provide best back visibibility for navigating mate.But at present, the back mirror that this type of minute surface is automatically adjustable often causes minute surface to break due to mirror face turning over travel.
In prior art, a kind of type of drive be elevated by screw rod has been had to realize the automobile rear-vision mirror face regulating mechanism of mirror angle adjustment.And this regulating mechanism can at mirror face turning to skidding during end position thus preventing mirror face turning over travel and break.Its main parts size comprises direct-flow micromachine, worm screw, helical teeth wheel disc, lifting screw, output shaft and the worm screw of described direct-flow micromachine are fixed, worm screw engages with the tooth on helical teeth wheel disc lateral wall, the centre hole of described helical teeth wheel disc is placed on lifting screw, and the centre hole of described helical teeth wheel disc is provided with the convex tooth of screw thread matched with the outside thread on lifting screw lateral wall, the top of lifting screw is connected with the float plate of minute surface.Realize minute surface by the transmission of worm screw, helical teeth wheel disc, lifting screw thus to overturn with float plate.Further, can along the radial dilatation of helical teeth wheel disc or reset when the convex tooth of screw thread on described helical teeth wheel disc is subject to the diametral load on lifting screw.So, when mirror face turning is restricted to the longitudinal travel of lifting screw during end position, resistance increases, thus make the convex tooth of screw thread along the radial dilatation of helical teeth wheel disc or reset, thus achieve the convex tooth of screw thread to continue to skid between the externally threaded tooth of lifting screw, finally reach the object preventing mirror face turning over travel.
But above-mentioned existing regulating mechanism; when the convex tooth of screw thread reset needed for elastic force excessive time motor load can be caused to increase; do not have the slipping protection effect of mirror face turning to end position simultaneously yet; and when needed for the reset of the convex tooth of screw thread, elastic force is too small; when being subject to windage or other External Force Actings, minute surface very easily overturns, and causes back mirror to lose efficacy; especially at fastlink, this type of situation is extremely dangerous.
In addition, described regulating mechanism realizes the disengaging of actuator and minute surface transmission by constantly expand back and forth between the tooth of the convex tooth of screw thread on the outside thread of lifting screw and tooth with the skidding of reset, therefore back mirror can be caused to continue shake, and along with clash, and the screwed claw on the outside thread of lifting screw and helical teeth wheel disc also easily weares and teares.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of and break to preventing minute surface over travel during end position at mirror face turning, and the two clutch slipping device of the automobile rear view mirror driver that mirror face turning can not occur under larger External Force Acting.
Technical solution adopted in the utility model is: provide a kind of automobile rear view mirror driver two clutch slipping device, it comprises one end for the lifting screw that is connected with minute surface float plate with to be placed on lifting screw and to be driven the helical teeth wheel disc rotated by peripheral driver, sleeve pipe is provided with between described helical teeth wheel disc and lifting screw, sleeve upper end is provided with the multiple pawl heads along sleeve circumferential distribution, the lower end of whole pawl head is all fixed with sleeve pipe, the free end of whole pawl head is positioned at above sleeve pipe, and leave for making the radial direction gathering of the free end of pawl head along sleeve pipe or the gap of expansion between arbitrary neighborhood two pawl head, the madial wall of each pawl head is provided with respectively the convex tooth matched with the outside thread of lifting screw, described helical teeth wheel disc and sleeve pipe flush fit, described sleeve pipe is provided with the stop gear for limiting helical teeth wheel disc axial motion.
After adopting above structure, the two clutch slipping device of automobile rear view mirror driver of the present utility model compared with prior art has the following advantages: first, by the flush fit of sleeve pipe and helical teeth wheel disc, mirror face turning can be worked as to playing good slipping effect during end position, prevent minute surface over travel, simultaneously minute surface will be caused to shake due to the skidding of sleeve pipe and helical teeth wheel disc again, and the problem such as the collision that brings of tooth and tooth transmission, secondly, coordinated by the convex tooth on sleeve pipe and lifting screw, the effect driving mirror face turning can be played, simultaneously when needs carry out manual regulation, can by applying larger power time convex tooth and elevating screw thread on tooth skid, finally achieve multistage skidding to control.
As preferably, described stop gear refers to, described sleeve pipe is provided with one with the annular lip of annular slope, one end of described helical teeth wheel disc near-ring shape flange is provided with the inclined-plane matched with annular slope, described sleeve pipe is positioned at one end that helical wheel dish deviates from annular lip and is provided with holddown spring, one end that one end of described holddown spring and helical teeth wheel disc deviate from annular lip leans, and the other end and the buckle be fixed on sleeve pipe of holddown spring lean.。
As preferably, described sleeve pipe is provided with an elastic fastening circle, and the madial wall of described elastic fastening circle and the lateral wall of whole pawl head are fitted.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two clutch slipping device of automobile rear view mirror driver of the present utility model.
Fig. 2 is the explosive view of the two clutch slipping device of automobile rear view mirror driver of the present utility model.
Wherein, 1, lifting screw, 2, helical teeth wheel disc, 3, sleeve pipe, 3.1, annular lip, 4, pawl head, 4.1, convex tooth, 5, holddown spring, 6, buckle, 7, elastic fastening circle.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in the figure, the utility model provides a kind of automobile rear view mirror driver two clutch slipping device, it comprises one end for the lifting screw 1 that is connected with minute surface float plate with to be placed on lifting screw 1 and to be driven the helical teeth wheel disc 2 rotated by peripheral driver, be provided with sleeve pipe 3 between described helical teeth wheel disc 2 and lifting screw 1, sleeve pipe 3 one end is provided with multiple pawl heads 4 that the circumference along sleeve pipe 3 axis distributes.As preferably, whole pawl head 4 is uniformly distributed along the circumference of sleeve pipe 3 axis.The lower end of whole pawl head 4 is all fixed with sleeve pipe 3; the free end of whole pawl head 4 is positioned at above sleeve pipe 3; and leave between arbitrary neighborhood two pawl head 4 for making the radial direction gathering of the free end of pawl head 4 along sleeve pipe 3 or the gap of expansion, the madial wall of each pawl head 4 is provided with respectively the convex tooth 4.1 matched with the outside thread of lifting screw 1.That is, when artificial go to stir minute surface time, described lifting screw 1 is subject to axial thrust, its convex tooth 4.1 being transferred to pawl head 4 changes into for pawl head 4 along lifting screw 1 diametral load, order about whole pawl head 4 thus to expand, when this diametral load continues to increase and causes pawl head 4 to be expanded to end position, convex tooth 4.1 and the thread on lifting screw 1 skid, and the axial motion of lifting screw 1 can not have influence on the rotation of helical teeth wheel disc 2 and sleeve pipe 3 thus.Particularly, the manual adjustment means under can not working as external drive motors.
Described helical teeth wheel disc 2 and sleeve pipe 3 flush fit, described sleeve pipe 3 is provided with the stop gear for limiting helical teeth wheel disc 2 axial motion.Particularly; when peripheral driver drives helical teeth wheel disc 2 to rotate; rotate with helical teeth wheel disc 2 at the effect case in 3 of helical teeth wheel disc 2 with the static friction force of sleeve pipe 3; lifting screw 1 is driven to realize axial motion thus; and when lifting screw 1 axial motion is to end position; namely when mirror face turning causes lifting screw to be subject to larger axial resistance to end position; static friction force between sleeve pipe 3 and helical teeth wheel disc 2 is not enough to overcome the resistance continuing to increase; therefore realize helical teeth wheel disc 2 to skid with sleeve pipe 3, thus protection minute surface.Therefore, above-mentioned flush fit refers to, the lateral wall of sleeve pipe 3 and the madial wall interference fit of helical teeth wheel disc 2, and drive sleeve 3 and helical teeth wheel disc 2 relatively rotate skidding when moment of torsion reaches the limit values, namely above-mentioned flush fit not refers to be fastenedly connected completely, and refers to there is certain expanding force therebetween thus produces certain maximum static friction force.
Described stop gear refers to, described sleeve pipe 3 is provided with one with the annular lip 3.1 of annular slope, one end of the nearly annular lip 3.1 of described helical teeth wheel disc 2 is provided with the inclined-plane matched with annular slope, described sleeve pipe 3 is positioned at one end that helical wheel dish 2 deviates from annular lip 3.1 and is provided with holddown spring 5, one end that one end of described holddown spring 5 and helical teeth wheel disc 2 deviate from annular lip 3.1 leans, and the other end and the buckle 6 be fixed on sleeve pipe 3 of holddown spring 5 lean.
Described sleeve pipe 3 is provided with an elastic fastening circle 7, and the madial wall of described elastic fastening circle 7 and the lateral wall of whole pawl head 4 are fitted.Particularly, described whole pawl head 4 surrounds into annular, and described elastic fastening circle 7 cuff in pawl head 4, thus increases the elastic force that pawl head 4 resets, and adds pawl head 4 and to skid the maximum radial force that can bear.
The skidding principle of work of actuator adjustment mirror face turning is, first, the worm screw of peripheral driver engages with helical teeth wheel disc, thus drive helical teeth wheel disc to rotate, then rotation of sleeve is driven by the static friction force of helical teeth wheel disc and sleeve pipe, subsequently carry out screw thread fit by the convex tooth on sleeve pipe and the outside thread on lifting screw, realize lifting screw to move vertically, finally, by the ball-and-socket type joint of lifting screw head and minute surface float plate hinged, withstand minute surface float plate by lifting screw one-sided, minute surface float plate is overturn.In the process; when moving to the end position of minute surface float plate upset; axial resistance on lifting screw increases; the moment of torsion needed for rotation of sleeve is caused to increase; static friction force between described helical teeth wheel disc and sleeve pipe is not enough to the moment of torsion providing rotation of sleeve; finally make helical teeth wheel disc and sleeve pipe skid, play a protective role.And the tensile force of pawl head in the present invention is greater than the maximum static friction force between helical teeth wheel disc and sleeve pipe, therefore in drive operation process, mirror face turning can preferentially triggering helical teeth wheel disc and sleeve pipe skid to the sliding mechanism of end position, and the convex tooth on pawl head and the thread on lifting screw can not be caused to skid.Therefore, in normal driving conditions, acting on air draught on minute surface or other external force also can not be too small and cause mirror face turning due to the maximum static friction force between helical teeth wheel disc and sleeve pipe.It is less that the more basic upper driver load of reliability also can be arranged.
And the principle of work of manual regulation mirror face turning is, larger tilting force is provided to act on minute surface by personnel, lifting screw is made to be subject to larger axial force, order about the pawl head expansion on sleeve pipe thus, what the convex tooth on pawl head was continued skids on lifting screw, namely convex tooth is along the radial reciprocating expansion of lifting screw and reset, slides between the tooth top and tooth root of the tooth of lifting screw.And in this course, axial pressure provides the larger pressure in inclined-plane on helical teeth wheel disc, therefore, helical teeth wheel disc now and the maximum static friction force of sleeve pipe increase under the effect of lifting screw axle pressure, therefore, helical teeth wheel disc is relative with sleeve pipe fixing, and with the output shaft locking of actuator.
In addition, in order to prevent in manual regulation mirror face turning process, the rotation of sleeve pipe, the convex tooth on described sleeve pipe and the screw thread on lifting screw can select self-locking thread.
Be described with regard to the utility model preferred embodiment above, but can not be interpreted as it is limitations on claims.The utility model is not only confined to above embodiment, and its concrete structure allows to change, and all various changes done in the protection domain of the utility model demand for independence are all in protection domain of the present utility model.
Claims (3)
1. the two clutch slipping device of automobile rear view mirror driver, it comprises one end for the lifting screw (1) that is connected with minute surface float plate with to be placed on lifting screw (1) upper and driven the helical teeth wheel disc (2) rotated by peripheral driver, it is characterized in that: between described helical teeth wheel disc (2) and lifting screw (1), be provided with sleeve pipe (3), sleeve pipe (3) upper end is provided with the multiple pawl heads (4) along the distribution of sleeve pipe (3) circumference, the lower end of whole pawl head (4) is all fixed with sleeve pipe (3), leave for making the radial direction gathering of the free end of pawl head (4) along sleeve pipe (3) or the gap of expansion between arbitrary neighborhood two pawl head (4), the madial wall of each pawl head (4) is provided with respectively the convex tooth (4.1) matched with the outside thread of lifting screw (1), described helical teeth wheel disc (2) and sleeve pipe (3) flush fit, described sleeve pipe (3) is provided with the stop gear for limiting helical teeth wheel disc (2) axial motion.
2. the two clutch slipping device of automobile rear view mirror driver according to claim 1, it is characterized in that: described stop gear refers to, described sleeve pipe (3) is provided with one with the annular lip (3.1) of annular slope, one end of the nearly annular lip (3.1) of described helical teeth wheel disc (2) is provided with the inclined-plane matched with annular slope, described sleeve pipe (3) is positioned at one end that helical wheel dish (2) deviates from annular lip (3.1) and is provided with holddown spring (5), one end that one end of described holddown spring (5) and helical teeth wheel disc (2) deviate from annular lip (3.1) leans, the other end and the buckle (6) be fixed on sleeve pipe (3) of holddown spring (5) lean.
3. the two clutch slipping device of automobile rear view mirror driver according to claim 1, it is characterized in that: described sleeve pipe (3) is provided with an elastic fastening circle (7), the madial wall of described elastic fastening circle (7) and the lateral wall of whole pawl head (4) are fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520103577.5U CN204432526U (en) | 2015-02-13 | 2015-02-13 | The two clutch slipping device of automobile rear view mirror driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520103577.5U CN204432526U (en) | 2015-02-13 | 2015-02-13 | The two clutch slipping device of automobile rear view mirror driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204432526U true CN204432526U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520103577.5U Withdrawn - After Issue CN204432526U (en) | 2015-02-13 | 2015-02-13 | The two clutch slipping device of automobile rear view mirror driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204432526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590132A (en) * | 2015-02-13 | 2015-05-06 | 宁波精成车业有限公司 | Double-clutch skid device for mirror surface driver of automobile rearview mirror |
-
2015
- 2015-02-13 CN CN201520103577.5U patent/CN204432526U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590132A (en) * | 2015-02-13 | 2015-05-06 | 宁波精成车业有限公司 | Double-clutch skid device for mirror surface driver of automobile rearview mirror |
| WO2016127901A1 (en) * | 2015-02-13 | 2016-08-18 | 宁波精成车业有限公司 | Dual-clutch skid device for mirror driver of automobile rearview mirror |
| CN104590132B (en) * | 2015-02-13 | 2017-04-26 | 宁波精成车业有限公司 | Double-clutch skid device for mirror surface driver of automobile rearview mirror |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150701 Effective date of abandoning: 20170426 |