CN204459069U - Worm screw, worm gear worm backlash regulating mechanism, commutator and automobile - Google Patents
Worm screw, worm gear worm backlash regulating mechanism, commutator and automobile Download PDFInfo
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- CN204459069U CN204459069U CN201520065347.4U CN201520065347U CN204459069U CN 204459069 U CN204459069 U CN 204459069U CN 201520065347 U CN201520065347 U CN 201520065347U CN 204459069 U CN204459069 U CN 204459069U
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- worm
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 24
- 230000001276 controlling effect Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 210000003734 kidney Anatomy 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
A kind of worm screw, worm gear worm backlash regulating mechanism, commutator and automobile, wherein, worm screw comprises: bar portion, is fixedly arranged on the first worm tooth in described bar portion; The second worm tooth between adjacent first worm tooth, and have between adjacent first worm tooth and only have second worm tooth, described second worm tooth can move axially between adjacent first worm tooth along described bar portion; Be sheathed on the sleeve of one end, described bar portion, described sleeve is fixedly connected with the second worm tooth; The controlling mechanism that described sleeve moves axially along bar portion can be made; Described first worm tooth and described second worm tooth bonded to each other after coordinate with the worm-gear tooth on worm gear.The adjustment of the utility model by regulating the axial back lash of worm and gear to realize the axial back lash of worm and gear, and worm screw two ends adopt clutch shaft bearing to be connected with housing with the second bearing, thus worm and gear can bear larger load.
Description
Technical field
The utility model relates to Worm Wheel System technical field, is specifically related to worm screw, worm gear worm backlash regulating mechanism, commutator and automobile.
Background technique
The advantages such as worm-and-wheel gear is large with its compact structure, velocity ratio, stable drive, impact are little, are widely used at mechanical field.But due to the relative sliding velocity between worm and gear larger, easily cause worm gear or worm screw wearing and tearing, after worm and gear runs a period of time, back lash between them will increase, at this moment worm-and-wheel gear just there will be transmission steadily, occurs velocity ratio fluctuation and rotational noise, finally causes worm and gear to lose efficacy, wherein, the back lash between worm and gear comprises axial back lash and radial back lash.
If machining accuracy (machining accuracy as housing, worm gear, worm screw) is inadequate, be easy to occur between worm and gear can not normally transmission, such as there is axial or radial tension engagement, at this moment, more easily cause transmission efficiency low, and also can accelerated wear test between worm gear and worm screw; Also likely occur that axial or radial direction crosses pine engagement, at this moment worm-and-wheel gear just there will be transmission steadily, occurs that velocity ratio fluctuates and rotational noise, finally causes worm and gear to lose efficacy.So the axis of worm and gear or radial Mesh Clearance Adjustment are very important problems, in reality, worm-and-wheel gear mostly can not adjust the back lash between worm and gear, only has little a part of worm-and-wheel gear can adjust radial back lash between worm and gear.
For making worm-and-wheel gear stable drive, need to the axis of worm and gear or radial Mesh Clearance Adjustment, in prior art, generally the radial back lash by regulating the centre distance of worm and gear to regulate worm and gear, as shown in Figure 1: primarily of part compositions such as housing 100, worm gear 200, worm-wheel shaft 300, aligning frame 400, bearing 500, worm screw 600, aligning addendum cone 700, selfaligning bearings 800.Wherein worm-wheel shaft 300 is through the center hole of worm gear 200, worm-wheel shaft 300 and worm gear 200 are for being fixedly connected with, worm-wheel shaft 300 is connected in the bearing saddle bore on housing 100 by bearing (not shown in FIG.), the left end of worm screw 600 passes the inner ring of selfaligning bearing 800, the outer ring of selfaligning bearing 800 is fixed in the bearing saddle bore on housing 100, the right-hand member of worm screw 600 passes the inner ring of bearing 500, the outer ring of bearing 500 is embedded in the kidney slot in aligning frame 400, bearing outer ring can slide in kidney slot, the outer ring of bearing 500 is withstood in the end of aligning addendum cone 700, and be screw-thread fit with housing 100.
Working principle is as shown in Figure 2: when having larger radial back lash and need adjustment this gap between worm gear and worm screw, rotary aligning addendum cone 700, make it to move upward, bearing 500 is also moved upward along the kidney slot in aligning frame 400, thus worm screw 600 is rotated counterclockwise around the aligning center " O " of selfaligning bearing 800, worm screw 600 is also reducing with the centre distance of worm gear 200, radial back lash is also reducing, until disappear, to this completes the radial Mesh Clearance Adjustment between worm gear 200 and worm screw 600.
But, not about the scheme of axial clearance adjustment in prior art.
The purpose of this utility model is: provide a kind of worm gear worm backlash regulating mechanism, and adjust the axial back lash of worm and gear, ensure that the stable drive of worm and gear, cost also reduces.
Model utility content
The problem that the utility model solves is the scheme that prior art does not have axial Mesh Clearance Adjustment.
For solving the problem, the utility model provides a kind of worm screw, comprising:
Bar portion, is fixedly arranged on the first worm tooth in described bar portion;
The second worm tooth between adjacent first worm tooth, and have between adjacent first worm tooth and only have second worm tooth, described second worm tooth can move axially between adjacent first worm tooth along described bar portion;
Be sheathed on the sleeve of one end, described bar portion, described sleeve is fixedly connected with described second worm tooth;
The controlling mechanism that described sleeve moves axially along described bar portion can be made;
Described first worm tooth and described second worm tooth bonded to each other after coordinate with the worm-gear tooth on worm gear.
Optionally, be provided with spline between described second worm tooth and described bar portion, described second worm tooth can move axially in described bar portion along spline.
Optionally, the axial one end of described controlling mechanism is connected with described bar portion, the axial the other end and described sleeve connection.
Optionally, described controlling mechanism is bolt, is located at the axial end portion of described sleeve away from the first worm tooth, and described bar portion has the bolt hole coordinated with described bolt, by the screw-in of described bolt or back-out, described sleeve is moved axially along bar portion.
The utility model also provides a kind of worm gear worm backlash regulating mechanism, comprising:
Housing, described housing is provided with clutch shaft bearing hole, the second bearing hole, is provided with clutch shaft bearing in described clutch shaft bearing hole, is provided with the second bearing in described second bearing hole;
Worm gear;
Worm screw described in any one;
Described worm gear and worm meshing;
The two ends of described worm screw are each passed through the center hole of described clutch shaft bearing and described second bearing, and described worm screw one end is connected with described clutch shaft bearing, and the sleeve of the described worm screw the other end can move axially along the center hole of described second bearing.
Optionally, described housing is electric booster steering device housing.
The utility model also provides a kind of commutator, comprises the worm gear worm backlash regulating mechanism described in any one.
The utility model also provides a kind of automobile, comprises the worm gear worm backlash regulating mechanism described in any one.
Compared with prior art, the technical solution of the utility model has the following advantages:
The utility model bar portion is provided with the first worm tooth, at the sheathed sleeve in worm screw one end, is provided with the second worm tooth between adjacent first worm tooth, and the second worm tooth can move axially between adjacent first worm tooth along described bar portion; When there is larger axial back lash between worm gear and worm screw, screw out controlling mechanism, sleeve outwards moves, thus drive the second worm tooth outwards to move, first worm tooth keeps motionless on worm shaft, and the worm tooth that the first worm tooth and the second worm tooth are formed jointly broadens, and the profile of worm tooth expands outwardly then, thus the axial back lash of eliminating between worm tooth and worm-gear tooth, reach the adjustment object of the axial back lash of worm and gear.
Meanwhile, worm tooth of the present utility model is made up of the first worm tooth and the second worm tooth, and the first worm tooth is mutually nested with the second worm tooth, and when worm and gear engages, worm-gear tooth and the worm tooth be made up of the first worm tooth and the second worm tooth are meshed; Such engagement system can not only adjust the axial back lash of worm and gear, simultaneously, at any time, worm and gear is all be meshed by the first worm tooth, the second worm tooth and worm-gear tooth, first worm tooth, the second worm tooth and worm-gear tooth are all stressed, and so, the bearing capacity of worm tooth and worm-gear tooth becomes large, the wearing and tearing of worm and gear are slowed down, can transmitting torque smoothly.
The utility model worm gear worm backlash regulating mechanism does not adopt selfaligning bearing, do not adopt and regulate worm and gear meshed center distance to regulate the mode of back lash, but the adjustment by regulating the axial back lash of worm and gear to realize the axial back lash of worm and gear, and worm screw two ends adopt clutch shaft bearing to be connected with housing with the second bearing, thus worm and gear can bear larger load.
Accompanying drawing explanation
Fig. 1 is the radial meshing gap adjusting mechanism structural representation of prior art worm and gear;
Fig. 2 is the working principle schematic diagram of the radial meshing gap adjusting mechanism of prior art worm and gear;
Fig. 3 is the axial meshing gap adjusting mechanism structural representation of the utility model worm and gear;
Fig. 4 is the enlarged view of part B in the utility model Fig. 3;
Fig. 5 is the enlarged view of C part in the utility model Fig. 3;
Fig. 6 is the sectional drawing along A-A direction in the utility model Fig. 3.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and are described in detail specific embodiment of the utility model below in conjunction with accompanying drawing.
As shown in Figure 3 and Figure 4, the utility model provides a kind of worm screw 600, comprise: bar portion, bar portion is installed with the first worm tooth 602, the second worm tooth 603 is provided with between adjacent first worm tooth, at the sheathed sleeve 606 in worm screw 600 one end, sleeve 606 is fixedly connected with the second worm tooth 603, second worm tooth 603 is between adjacent first worm tooth 602, second worm tooth 603 can move axially along between adjacent first worm tooth 602, and has between adjacent first worm tooth 602 and only have second worm tooth 603; First worm tooth 602 and the second worm tooth 603 jointly form worm tooth 601, first worm tooth 602 of the utility model worm screw and the second worm tooth 603 bonded to each other after engage with the worm-gear tooth 201 on worm gear 200.
In addition, as shown in Figure 6, spline 607 is provided with between the second worm tooth 603 and bar portion, second worm tooth 603 can move axially along spline 607, spline 607 can transmission lever portion to the power of the second worm tooth 603, owing to being provided with spline 607 in bar portion, second worm tooth 603 can move axially on spline 607, make to move axially more smooth-going, guidance quality is better, avoids the second worm tooth 603 directly to contact with bar portion, after causing long-time use, wear and tear, make worm gear worm backlash regulating mechanism longer service life.
Further, as shown in Figure 5, also comprise the controlling mechanism that sleeve 606 can be made to move axially along bar portion, the axial one end of controlling mechanism is connected with bar portion, the axial the other end is connected with sleeve 606, this controlling mechanism comprises the bolt hole 605 that bolt 604 and bar portion end coordinate with bolt 604, the axial end portion of sleeve 606 away from the first worm tooth 602 be located at by bolt 604, the inner circumferential of sleeve 606 is provided with the groove coordinated with socket cap end, bolt 604 socket cap end is installed in groove, realize interference fit, the inwall of bolt 604 socket cap end and groove offsets, bolt 604 screws in or screws out, because the socket cap end of bolt 604 and the groove inner wall of sleeve 606 inner peripheral surface offset, play fixing worm screw 600 on the one hand, moving sleeve 606 can be with to screw in or screw out on the other hand, the second worm tooth 603 be then fixedly connected with sleeve 606 can move axially along bar portion on spline 607.
As shown in Figure 3, worm screw 600 described in employing, the utility model additionally provides a kind of worm gear worm backlash regulating mechanism, comprise housing 100, housing 100 has worm gear installation cavity and worm screw installation cavity, have worm-wheel shaft 300 in worm gear installation cavity, worm-wheel shaft 300 is through the center hole of worm gear 200, and worm-wheel shaft 300 is connected with worm gear 200; Install in worm screw installation cavity and worm screw 600 that worm gear 200 engages, wherein, the first worm tooth 602 and the second worm tooth 603 is bonded to each other engages with the worm-gear tooth 201 on worm gear 200 afterwards; Be provided with clutch shaft bearing hole, the second bearing hole in worm screw 600 installation cavity, be provided with in clutch shaft bearing hole in clutch shaft bearing 901, second bearing hole and be provided with the second bearing 900; The two ends of worm screw 600 are each passed through the center hole of clutch shaft bearing 901 and the second bearing 900; Worm screw 600 one end is fixedly connected with clutch shaft bearing 901, and the sleeve 606 of worm screw 600 the other end can move axially along the center hole of the second bearing 900.
Described housing 100 is electric booster steering device housing.
The working principle of this embodiment's worm gear worm backlash regulating mechanism is as follows:
When there is larger axial back lash between worm-gear tooth 201 and worm tooth 601, screw out bolt 604, make it outwards (this direction is the direction of the second worm tooth 603 away from the first worm tooth 602) mobile, thus the outwards movement of band moving sleeve 606, then sleeve 606 drives the second worm tooth 603 axially outwards mobile along spline 607, first worm tooth 602 can not move axially along spline 607, thus the worm tooth 601 making the first worm tooth 602 and the second worm tooth 603 jointly form broadens, the profile of worm tooth 601 extends out, thus the axial back lash eliminated between worm tooth 601 and worm-gear tooth 201, reach the adjustment object of the axial back lash of worm and gear.
When the axial back lash of worm and gear is less, screw in bolt 604, make it inwardly (this direction is the second worm tooth 603 to the close direction of the first worm tooth 602) mobile, thus band moving sleeve 606 moves inward, then sleeve 606 drives the second worm tooth 603 axially to move inward along spline 607, first worm tooth 602 can not move axially along spline 607, thus the worm tooth 601 making the first worm tooth 602 and the second worm tooth 603 jointly form narrows, the reduced profile of worm tooth 601, thus the axial back lash eliminated between worm tooth 601 and worm-gear tooth 201, reach the adjustment object of the axial back lash of worm and gear.
Simultaneously, worm tooth 601 of the present utility model is made up of the first worm tooth 602 and the second worm tooth 603, first worm tooth 602 is mutually nested with the second worm tooth 603, and when worm and gear engages, worm-gear tooth 201 and the worm tooth 601 be made up of the first worm tooth 602 and the second worm tooth 603 are meshed; Such engagement system can not only adjust the axial back lash of worm and gear, simultaneously, at any time, worm and gear is all be meshed (with reference to figure 4) by the first worm tooth 602, second worm tooth 603 and worm-gear tooth 201, worm and gear engagement process in, the first worm tooth 602, second worm tooth 603 and worm-gear tooth 201 all stressed, so, the bearing capacity of worm tooth 601 and worm-gear tooth 201 becomes large, and the wearing and tearing of worm and gear are slowed down, can transmitting torque smoothly.
The utility model worm gear worm backlash regulating mechanism does not adopt selfaligning bearing, do not adopt the mode regulating worm and gear meshed center distance to regulate radial back lash, but the adjustment by regulating worm and gear axial engagement spacing to realize the axial back lash of worm and gear, and worm screw two ends adopt clutch shaft bearing to be connected with housing with the second bearing, thus worm and gear can bear larger load.
It should be noted that, controlling mechanism of the present utility model is not limited to bolt, as long as sleeve can be made to drive the second worm tooth to move between adjacent first worm tooth along bar portion, such mechanism is all applicable to the utility model.
In addition, owing to being provided with spline 607 between the second worm tooth 603 and bar portion, the movement that the second worm tooth 603 is more smooth-going, more stable in bar portion is made; In order to the movement making the second worm tooth 603 more smooth-going, more stable in bar portion, between the second worm tooth 603 and bar portion, set parts are not limited only to spline 607; Meanwhile, also can not be provided with any parts between the second worm tooth 603 and bar portion, the second worm tooth 603 can move axially equally in bar portion.
The utility model also provides a kind of commutator, comprises described worm gear worm backlash regulating mechanism.
The utility model also provides a kind of automobile, comprises described worm gear worm backlash regulating mechanism.
Although the utility model discloses as above, the utility model is not defined in this.Any those skilled in the art, not departing from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection domain of the present utility model should be as the criterion with claim limited range.
Claims (8)
1. a worm screw, is characterized in that, comprising:
Bar portion, is fixedly arranged on the first worm tooth in described bar portion;
The second worm tooth between adjacent first worm tooth, and have between adjacent first worm tooth and only have second worm tooth, described second worm tooth can move axially between adjacent first worm tooth along described bar portion;
Be sheathed on the sleeve of one end, described bar portion, described sleeve is fixedly connected with described second worm tooth;
The controlling mechanism that described sleeve moves axially along described bar portion can be made;
Described first worm tooth and described second worm tooth bonded to each other after coordinate with the worm-gear tooth on worm gear.
2. worm screw as claimed in claim 1, it is characterized in that, be provided with spline between described second worm tooth and described bar portion, described second worm tooth can move axially in described bar portion along spline.
3. worm screw as claimed in claim 1, is characterized in that, the axial one end of described controlling mechanism is connected with described bar portion, the axial the other end and described sleeve connection.
4. worm screw as claimed in claim 3, it is characterized in that, described controlling mechanism is bolt, be located at the axial end portion of described sleeve away from described first worm tooth, described bar portion has the bolt hole coordinated with described bolt, by the screw-in of described bolt or back-out, described sleeve is moved axially along described bar portion.
5. a worm gear worm backlash regulating mechanism, is characterized in that, comprising:
Housing, described housing is provided with clutch shaft bearing hole, the second bearing hole, is provided with clutch shaft bearing in described clutch shaft bearing hole, is provided with the second bearing in described second bearing hole;
Worm gear;
Worm screw described in any one of claim 1-4;
Described worm gear and described worm meshing;
The two ends of described worm screw are each passed through the center hole of described clutch shaft bearing and described second bearing, and described worm screw one end is connected with described clutch shaft bearing, and the sleeve of the described worm screw the other end can move axially along the center hole of described second bearing.
6. worm gear worm backlash regulating mechanism as claimed in claim 5, it is characterized in that, described housing is electric booster steering device housing.
7. a commutator, is characterized in that, comprises the worm gear worm backlash regulating mechanism described in any one of claim 5-6.
8. an automobile, is characterized in that, comprises the worm gear worm backlash regulating mechanism described in any one of claim 5-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520065347.4U CN204459069U (en) | 2015-01-29 | 2015-01-29 | Worm screw, worm gear worm backlash regulating mechanism, commutator and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520065347.4U CN204459069U (en) | 2015-01-29 | 2015-01-29 | Worm screw, worm gear worm backlash regulating mechanism, commutator and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459069U true CN204459069U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520065347.4U Expired - Fee Related CN204459069U (en) | 2015-01-29 | 2015-01-29 | Worm screw, worm gear worm backlash regulating mechanism, commutator and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204459069U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461457A (en) * | 2016-06-06 | 2017-12-12 | 舍弗勒技术股份两合公司 | Worm Gear Mechanism |
| CN107718856A (en) * | 2017-11-23 | 2018-02-23 | 运城制版印刷机械制造有限公司 | Intaglio press oil-immersed type lubricates material retractable device for revolving and driving |
| CN108311920A (en) * | 2017-01-16 | 2018-07-24 | 浙江师范大学 | A kind of adjustable rotary Hydraulic Clamping Mechanism |
| CN116025669A (en) * | 2023-03-30 | 2023-04-28 | 济南汉江光电科技有限公司 | Flexible-support worm and gear mechanism |
-
2015
- 2015-01-29 CN CN201520065347.4U patent/CN204459069U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461457A (en) * | 2016-06-06 | 2017-12-12 | 舍弗勒技术股份两合公司 | Worm Gear Mechanism |
| CN108311920A (en) * | 2017-01-16 | 2018-07-24 | 浙江师范大学 | A kind of adjustable rotary Hydraulic Clamping Mechanism |
| CN108311920B (en) * | 2017-01-16 | 2023-07-18 | 浙江师范大学 | An adjustable rotary hydraulic clamping mechanism |
| CN107718856A (en) * | 2017-11-23 | 2018-02-23 | 运城制版印刷机械制造有限公司 | Intaglio press oil-immersed type lubricates material retractable device for revolving and driving |
| CN116025669A (en) * | 2023-03-30 | 2023-04-28 | 济南汉江光电科技有限公司 | Flexible-support worm and gear mechanism |
| WO2024198200A1 (en) * | 2023-03-30 | 2024-10-03 | 济南汉江光电科技有限公司 | Flexible-supported worm-and-gear mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150708 Termination date: 20220129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |