CN204432525U - A kind of sliding mechanism of automobile rear view mirror driver - Google Patents
A kind of sliding mechanism of automobile rear view mirror driver Download PDFInfo
- Publication number
- CN204432525U CN204432525U CN201520102827.3U CN201520102827U CN204432525U CN 204432525 U CN204432525 U CN 204432525U CN 201520102827 U CN201520102827 U CN 201520102827U CN 204432525 U CN204432525 U CN 204432525U
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- helical teeth
- straight gear
- gear post
- teeth dish
- friction face
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- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
The utility model discloses a kind of sliding mechanism of automobile rear view mirror driver, it comprises turning cylinder (5), sequentially be placed on the straight gear post (2) on turning cylinder (5) and helical teeth dish (1), and be located on turning cylinder (5) for limiting the stop gear that straight gear post (2) and helical teeth dish (1) move axially, it is characterized in that: described helical teeth dish (1) is provided with active friction face, described straight gear post (2) is provided with the driven friction face matched with active friction face, the friction force ordering about straight gear post (2) and helical teeth dish (1) and link is formed between described active friction face and driven friction face, the maxim of friction force is less than resistance when straight gear post (2) turns to end position.The utility model provides a kind of structure on automobile rear view mirror driver simple and the sliding mechanism that can effectively prevent minute surface from breaking owing to rotating stroke when minute surface turns to end position.
Description
Technical field
The utility model relates to the technical field of vehicular spare parts, specifically a kind of sliding mechanism of automobile rear view mirror driver.
Background technology
As everyone knows, automobile rearview mirror is as the important accessory of vehicle security drive, and it provides good side and back visibibility for automobile traveling process, is the important leverage of navigating mate traffic safety.And existing automobile driver seat often needs to carry out position adjustment according to the height of different navigating mate and the difference of build, therefore just require that automobile rearview mirror needs to carry out angular adjustment, thus meet side and the back visibibility of different navigating mate the best.
Above-mentioned angle of rear-view mirror of vehicle is adjustable normally arranges S. A. for driving minute surface to rotate in the mirror shell of automobile rearview mirror, described S. A. is driven by the actuator be located in mirror shell and transmission device, realize minute surface thus to rotate relative to mirror shell, further, multiple S. A. is set, realizes the rotation of multiple directions.But the automobile rearview mirror of the prior art, easily causes minute surface to break when S. A. turns to end position.
In prior art, the technical matters that end position causes minute surface to break is turned in order to overcome above-mentioned S. A., usually sliding mechanism is set between transmission device and S. A., by sliding mechanism, transmission device and S. A. are departed from, remove transmission, thus ensure that minute surface can not cause breaking owing to continuing force when transmission device moves to end position.
But the structure of the sliding mechanism of the prior art is often comparatively complicated, therefore cost is higher, assembling is difficult, simultaneously because part too much also further increases fault rate.In addition, described sliding mechanism needs to be installed in the back-mirror housing of limited volume, and therefore too much parts just cause the small volume of each parts, this also increase further parts manufacture difficulty, add cost.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of structure on automobile rear view mirror driver simple and the sliding mechanism that can effectively prevent minute surface from breaking owing to rotating stroke when minute surface turns to end position.
Technical solution adopted in the utility model is: the sliding mechanism providing a kind of automobile rear view mirror driver, it comprises turning cylinder, sequentially be placed on the straight gear post on turning cylinder and helical teeth dish, and be located on turning cylinder for limiting the stop gear that straight gear post and helical teeth dish move axially, described helical teeth dish is provided with the active friction face for driving straight gear post to rotate, described straight gear post is provided with the driven friction face matched with active friction face, the friction force ordering about straight gear post and the interlock of helical teeth dish is formed between described active friction face and driven friction face, the maxim of friction force is less than resistance when straight gear post turns to end position.
After adopting above structure, the sliding mechanism of a kind of automobile rear view mirror driver of the present utility model compared with prior art has the following advantages: first, rotated by helical teeth dish and drive straight gear post, therebetween be by bonded to each other and compress friction realize, therefore when minute surface turns to end position, when overcoming the static friction force between helical teeth dish and straight gear post with the increase puted forth effort, described helical teeth dish and straight gear post relatively rotate, namely skidding is achieved, the transmission device between actuator and minute surface is made to realize departing from by the skidding of helical teeth dish and straight gear post thus, thus prevent minute surface from crossing stroke and breaking, the upper limit of described helical teeth dish and the static friction force of straight gear post can adjust according to pressure and surface friction coefficient, therefore the threshold value of producer's Default Value is convenient, secondly, the utility model structure is simple, the disengaging of transmission is realized without the need to extra inductor or electronic controller, baroque sliding mechanism more of the prior art is more reliable and stable and cheap, and because parts are less, therefore, it is more convenient to assemble, failure rate is low, and cost of parts is lower.
Improve as one, on described straight gear post, one end of nearly helical teeth dish is provided with the round platform that diameter is less than straight gear post, forming station terrace between described round platform and straight gear post, helical teeth dish is provided with the centre hole matched with round platform, and the lower surface of helical teeth dish nearly straight gear post is as active friction face and the step surface flush fit as driven friction face.Pass through round platform, make the helical teeth dish not direct pivoting friction with turning cylinder, prevent the infringement of turning cylinder, secondly coordinated with round platform by centre hole, can make helical teeth dish and straight gear post right alignment better, the difference avoided due to right alignment causes the thrust of each position of the friction face of the two different, affects friction effect.
As preferably, the hole inwall of described centre hole is as active friction face and the round platform lateral wall flush fit as driven friction face.By the madial wall of centre hole as driven friction face, the lateral wall of round platform is as active friction face, therefore reduce or avoid the lower surface of helical teeth dish as active friction face with as the step surface of driven friction face against the demand producing friction force, that is, reduce or avoid the axial pressing force between helical teeth dish and straight gear post.This also mitigates the axial force that detent mechanism is subject to, and improves the service life of detent mechanism.
Preferred as another kind, described stop gear comprises is located at card column on turning cylinder and jump ring, described card column, helical teeth dish and straight gear post are sequentially stacking, one end and the helical teeth dish of card column lean, the location shaft shoulder on the other end of card column and turning cylinder leans, described jump ring and straight gear post deviate from helical teeth dish one end and lean, and described turning cylinder is provided with the draw-in groove matched with jump ring.
As preferably, be provided with elastic body between described card column and the location shaft shoulder, and card column is provided with accommodating described elastomeric storage tank, the bottom land of elastomeric one end and storage tank leans, the elastomeric other end with locate the shaft shoulder and lean.Larger peripheral force can be provided by elastic body, therefore, also just improve the maximum static friction force of annular lip and annular groove bottom land, the maximum static friction force between the lower surface simultaneously also improving step surface and the nearly straight gear post of helical teeth dish.
Further, the end face of the nearly card column of described helical teeth dish is provided with annular groove, helical teeth dish is separated into interior ring and external toroidal ring by described annular groove, and described card column is provided with the annular lip matched with annular groove, and the lower surface of the annular lip of card column and the bottom land of annular groove lean.The elasticity of interior ring is better, is therefore conducive to interior ring and compresses round platform.
Further, the lateral wall of described annular lip and the madial wall flush fit of the nearly external toroidal ring of annular groove.Increased by the annular lip maximum static friction force making the skidding of helical teeth dish need further, avoid static friction force and concentrate on interior ring, and cause the concentrated stressed of parts and damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the sliding mechanism of a kind of automobile rear view mirror driver of the present utility model.
Fig. 2 is the exploded perspective view of the sliding mechanism of a kind of automobile rear view mirror driver of the present utility model.
Wherein, 1, helical teeth dish, 1.1, centre hole, 1.2, annular groove, 1.3, interior ring, 1.4, external toroidal ring, 2, straight gear post, 2.1, round platform, 2.2, step surface, 3, card column, 3.1, annular lip, 3.2, storage tank, 4, jump ring, 5, turning cylinder, 5.1, the location shaft shoulder, 5.2, draw-in groove, 6, elastic body.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Flush fit between hereafter described face and face refers to, compress between face and face, and have certain friction co-efficient value between described and face, thus make face and face produce certain friction force, when a face is as active surface, another face is driven under the effect of above-mentioned friction force as passive, and when the resistance that the part as passive is subject to continues to increase, formed between described and face and skid, namely resistance overcomes maximum static friction force, makes the application force between active surface and driven surface change force of sliding friction into.
Particularly, above-mentioned flush fit comprises between plane and plane, also comprises between cylindrical circular arc lateral wall and hole inwall.
As shown in the figure, the utility model provides a kind of sliding mechanism of automobile rear view mirror driver, it comprises turning cylinder 5, sequentially be placed on the straight gear post 2 on turning cylinder 5 and helical teeth dish 1, and be located on turning cylinder 5 for limiting straight gear post 2, the stop gear that helical teeth dish 1 and card column 3 move axially, described helical teeth dish 1 is provided with the active friction face for driving straight gear post 2 to rotate, described straight gear post 2 is provided with the driven friction face matched with active friction face, the friction force ordering about straight gear post 2 and helical teeth dish 1 interlock is formed between described active friction face and driven friction face, the maxim of friction force is less than resistance when straight gear post 2 turns to end position.The generation of the friction force between face and face, pressure must be fixed against and be multiplied by friction coefficient, therefore the straight gear post 2 at driven friction face place is driven to rotate by the helical teeth dish 1 at place, active friction face, active friction face and driven friction face must be needed to fit and apply certain thrust, described compression can be axial can be radial certainly, and its concrete Impact direction is the horizontal surface according to friction face place.Therefore, above-mentioned resistance refers to, after the minute surface float plate that the straight gear post 2 corresponding to driven friction face drives turn to end position, minute surface float plate reacts on the application force of straight gear post 2.When described resistance is greater than the maxim of friction force, skid between described active friction face and driven friction face during maximum static friction force namely between active friction face and driven friction face, change cliding friction into, therefore no matter active friction face is corresponding helical teeth dish 1 how high-speed operation, the propulsive effort that straight gear post 2 corresponding to driven friction face is subject to all equals force of sliding friction, and force of sliding friction is constantly equal to the resistance be subject to when minute surface float plate turn to end position, this resistance is less than the maximum pressure that can bear of minute surface, certainly, by changing maximum static friction force, can the size of the power of regulating action on minute surface.Therefore, in the utility model, above-mentioned resistance refers to the maximum pressure that minute surface can bear, so, the value of this resistance must be greater than whole friction force sums that straight gear post 2 and helical teeth dish 1 are skidded, namely when friction force is produced by a plane and a plane, then described resistance is greater than the maximum static friction force between two planes, the friction force produced by the friction force between two planes and the flush fit between axle and hole when friction force forms, the then described resistance maximum static friction force be greater than between two planes adds the sum of the maximum static friction force that the flush fit between axle and hole rotates relative to skidding.Generally speaking, turn to the not damaged object of end position to reach protection minute surface, described minute surface reacts on the resistance of straight gear post 2, must be greater than the maximum static friction force sum in whole faces of skidding between straight gear post 2 and helical teeth dish 1.
As preferably, on described straight gear post 2, one end of nearly helical teeth dish 1 is provided with the round platform 2.1 that diameter is less than straight gear post 2, forming station terrace 2.2 between described round platform 2.1 and straight gear post 2, helical teeth dish 1 is provided with the centre hole 1.1 matched with round platform 2.1, and the lower surface of the nearly straight gear post 2 of helical teeth dish 1 is as active friction face and step surface 2.2 flush fit as driven friction face.That is, step surface 2.2 is the cascaded surface between round platform 2.1 and straight gear post 2, the lower surface of helical teeth dish 1 and step surface 2.2 against and compress, produce static friction force between the lower surface of helical teeth dish 1 and step surface 2.2 thus, namely the lower surface of described helical teeth dish 1 refers to the end face below the helical teeth dish 1 of the vertically upper definition in accompanying drawing 1.The lower surface of described helical teeth dish 1 is as active friction face, and step surface 2.2 is as driven friction face.The axial pressing force that the lower surface of above-mentioned helical teeth dish 1 and step surface 2.2 are subject to can be the axial pre tightening force provided by detent mechanism, also can be the pressure etc. being screwed generation by axle upper cap nut.
Further, the hole inwall of described centre hole 1.1 is as active friction face and the round platform 2.1 lateral wall flush fit as driven friction face.Above-mentioned flush fit refers to, the diameter of centre hole 1.1 is slightly less than the diameter of round platform 2.1, thus make to produce squeese pressure between the hole inwall of described centre hole 1.1 and the lateral wall of round platform 2.1, form static friction force thus, now, the hole inwall of centre hole 1.1 is as one of active friction face, and the lateral wall of round platform 2.1 is as one of driven friction face.Certainly, described active friction face comprises the hole inwall of centre hole 1.1 and the lower surface of helical teeth dish 1, and described driven friction face comprises lateral wall and the step surface 2.2 of round platform 2.1.
Described stop gear refers to, be located at the card column 3 on turning cylinder 5 and jump ring 4, described card column 3, helical teeth dish 1 and straight gear post 2 are sequentially stacking, one end and the helical teeth dish 1 of card column 3 lean, the location shaft shoulder 5.1 on the other end of card column 3 and turning cylinder 5 leans, described jump ring 4 deviates from helical teeth dish 1 one end with straight gear post 2 and leans, and described turning cylinder 5 is provided with the draw-in groove 5.2 matched with jump ring 4.
Be provided with elastic body 6 between described card column 3 and the location shaft shoulder 5.1, and card column 3 is provided with the storage tank 3.2 of accommodating described elastic body 6, one end of elastic body 6 and the bottom land of storage tank 3.2 lean, and the other end of elastic body 6 leans with the location shaft shoulder 5.1.Described elastic body 6 is preferably spring.
The end face of the nearly card column 3 of described helical teeth dish 1 is provided with the annular groove 1.2 coaxial with the centre hole 1.1 of helical teeth dish 1, helical teeth dish 1 is separated into interior ring 1.3 and external toroidal ring 1.4 by described annular groove 1.2, described card column 3 is provided with the annular lip 3.1 matched with annular groove 1.2, and the lower surface of the annular lip 3.1 of card column 3 and the bottom land of annular groove 1.2 lean.When described card column 3 is as just the attaching parts preventing helical teeth dish 1 and turning cylinder 5 from rubbing, minimizing card column 3 two ends that should try one's best and the friction force of turning cylinder 5 and helical teeth dish 1, therefore, described card column two ends can be provided with some sphericals for reduce against contact surface, certainly, also can surface bearing be set.
Further, when the friction member of the threshold value of the maximum static friction force that described card column 3 is skidded as raising helical teeth dish 1, the madial wall flush fit of the lateral wall of described annular lip 3.1 and the nearly external toroidal ring 1.4 of annular groove 1.2.That is, spacing by key circumference between described card column 3 and turning cylinder 5, spacing by key circumference between described straight gear post 2 and turning cylinder 5, the lateral wall of described annular lip 3.1 and the lower surface of annular lip 3.1 are as driven friction face, the madial wall of the nearly external toroidal ring 1.4 of described annular groove 1.2 and the bottom land of annular groove 1.2 are as active friction face, driven friction face comprises the lateral wall of annular lip 3.1 thus, the lower surface of annular lip 3.1, the lateral wall of round platform 2.1 and step surface 2.2, active friction face comprises the madial wall of the nearly external toroidal ring 1.4 of annular groove 1.2, the bottom land of annular groove 1.2, the hole inwall of centre hole 1.1 and the lower surface of helical teeth dish 1.Therefore multiple while as active friction face and driven friction face, improve helical teeth dish 1 and to skid the variable range of required threshold value, it also avoid because single plane static friction force is excessive and damage component surface simultaneously, improve the practical life of parts.
Its principle of work is; first; helical teeth dish 1 and the worm mesh on peripheral driver output shaft; straight gear post 2 engages with the driving gear set in minute surface rotating shaft; straight gear post 2 is driven by the rotation of helical teeth dish 1 under the effect of static friction force; thus realize driver control mirror face turning; when mirror face turning is to end position; straight gear post 2 load increases; the resistance of straight gear post 2 and helical teeth dish 1 is made to be greater than maximum static friction force between straight gear post 2 and helical teeth dish 1; thus straight gear post 2 and helical teeth dish 1 are skidded, realize the protection of minute surface.
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 (7)
1. the sliding mechanism of an automobile rear view mirror driver, it comprises turning cylinder (5), sequentially be placed on the straight gear post (2) on turning cylinder (5) and helical teeth dish (1), and be located on turning cylinder (5) for limiting the stop gear that straight gear post (2) and helical teeth dish (1) move axially, it is characterized in that: described helical teeth dish (1) is provided with the active friction face for driving straight gear post (2) to rotate, described straight gear post (2) is provided with the driven friction face matched with active friction face, the friction force ordering about straight gear post (2) and helical teeth dish (1) and link is formed between described active friction face and driven friction face, the maxim of friction force is less than resistance when straight gear post (2) turns to end position.
2. the sliding mechanism of a kind of automobile rear view mirror driver according to claim 1, it is characterized in that: on described straight gear post (2), one end of nearly helical teeth dish (1) is provided with the round platform (2.1) that diameter is less than straight gear post (2), forming station terrace (2.2) between described round platform (2.1) and straight gear post (2), helical teeth dish (1) is provided with the centre hole (1.1) matched with round platform (2.1), the lower surface of the nearly straight gear post (2) of helical teeth dish (1) is as active friction face and step surface (2.2) flush fit as driven friction face.
3. the sliding mechanism of a kind of automobile rear view mirror driver according to claim 2, is characterized in that: the hole inwall of described centre hole (1.1) is as active friction face and round platform (2.1) the lateral wall flush fit as driven friction face.
4. the sliding mechanism of a kind of automobile rear view mirror driver according to claim 1, it is characterized in that: described stop gear comprises is located at card column (3) on turning cylinder (5) and jump ring (4), described card column (3), helical teeth dish (1) and straight gear post (2) sequentially stacking, one end and the helical teeth dish (1) of card column (3) lean, the location shaft shoulder (5.1) on the other end of card column (3) and turning cylinder (5) leans, described jump ring (4) and straight gear post (2) deviate from helical teeth dish (1) one end and lean, described turning cylinder (5) is provided with the draw-in groove (5.2) matched with jump ring (4).
5. the sliding mechanism of a kind of automobile rear view mirror driver according to claim 4, it is characterized in that: between described card column (3) and the location shaft shoulder (5.1), be provided with elastic body (6), and card column (3) is provided with the storage tank (3.2) of accommodating described elastic body (6), one end of elastic body (6) and the bottom land of storage tank (3.2) lean, and the other end of elastic body (6) leans with the location shaft shoulder (5.1).
6. the sliding mechanism of a kind of automobile rear view mirror driver according to claim 5, it is characterized in that: the end face of the nearly card column (3) of described helical teeth dish (1) is provided with annular groove (1.2), helical teeth dish (1) is separated into interior ring (1.3) and external toroidal ring (1.4) by described annular groove (1.2), described card column (3) is provided with the annular lip (3.1) matched with annular groove (1.2), and the lower surface of the annular lip (3.1) of card column (3) and the bottom land of annular groove (1.2) lean.
7. the sliding mechanism of a kind of automobile rear view mirror driver according to claim 6, is characterized in that: the madial wall flush fit of the lateral wall of described annular lip (3.1) and the nearly external toroidal ring (1.4) of annular groove (1.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102827.3U CN204432525U (en) | 2015-02-13 | 2015-02-13 | A kind of sliding mechanism of automobile rear view mirror driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102827.3U CN204432525U (en) | 2015-02-13 | 2015-02-13 | A kind of sliding mechanism of automobile rear view mirror driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204432525U true CN204432525U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520102827.3U Expired - Fee Related CN204432525U (en) | 2015-02-13 | 2015-02-13 | A kind of sliding mechanism of automobile rear view mirror driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204432525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590131A (en) * | 2015-02-13 | 2015-05-06 | 宁波精成车业有限公司 | Slipping mechanism for mirror surface driver of automotive rearview mirror |
-
2015
- 2015-02-13 CN CN201520102827.3U patent/CN204432525U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590131A (en) * | 2015-02-13 | 2015-05-06 | 宁波精成车业有限公司 | Slipping mechanism for mirror surface driver of automotive rearview mirror |
| CN104590131B (en) * | 2015-02-13 | 2017-01-11 | 宁波精成车业有限公司 | Slipping mechanism for mirror surface driver of automotive rearview mirror |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20210213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |