CN205136504U - Gear reducer and gear link gear thereof - Google Patents
Gear reducer and gear link gear thereof Download PDFInfo
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- CN205136504U CN205136504U CN201520840807.6U CN201520840807U CN205136504U CN 205136504 U CN205136504 U CN 205136504U CN 201520840807 U CN201520840807 U CN 201520840807U CN 205136504 U CN205136504 U CN 205136504U
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- gear
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Abstract
The utility model relates to a mechanical transmission technical field, provide gear reducer and gear link gear thereof, the gear link gear includes input gear, output gear and with the pivot of input gear and output gear coaxial coupling, input gear includes department of tooth profile and is located the connecting portion of department of tooth profile below, output gear's center has the holding tank that can supply connecting portion to stretch into, include still that the pretension card locates the elastic component in the holding tank, the elastic component has the centre bore, the connecting portion centering is downthehole, be equipped with the arch on the inner wall of elastic component, be equipped with the recess that can supply protruding card to go into on the outer wall of connecting portion. When output gear when being run into the resistance by drive part motion, output gear stall, and pivot and input gear's moment of torsion escalation, when input gear's moment of torsion is greater than the deformation of elastic component, deformation takes place for the elastic component, protrudingly break away from in the recess, output gear and elastic component stall, and input gear dallies, automatic cutout power transmission avoids output gear to receive the damage.
Description
Technical field
The utility model relates to mechanical transmission technical field, particularly relates to gear reducer and gear linkage mechanism thereof.
Background technique
Gear linkage mechanism is extensive at mechanical field Application comparison, because it has the advantages such as compact structure, the space that takies is little, transmission efficiency is high, the life-span is long, thus both can be used to main equipment, and also can be used to midget plant.As intelligent closestool, the Smart Homes such as intelligent door curtain curtain, the micromachine of electronic toys etc., in order to save cost, this micromachine generally adopts injection made gear retarder, in injection made gear retarder, have gear linkage mechanism.But, in these structures, when driven object body run into obstacle, load excessive etc. time, output gear in gear linkage mechanism and the moment of torsion between gear shaft are greater than the rating value that can bear between the two, gear reducer occurs stuck, gear produces plastic deformation, even broken teeth, and then damage equipment; If gear linkage mechanism, by electronic circuit control, may cause equipment to burn because of overload.
And for solving the problem, the normal waveform wheel disc that adopts, corrugated gasket, elastic hook, the structures such as frictional damping, wherein waveform wheel disc complex structure, take up room comparatively large, is not suitable for Minitype transmission mechanism; Corrugated gasket and elastic hook are owing to being subject to the restriction of elastic material shorter for working life, and load is less; Losing efficacy easily appears in frictional damping structure, and reliability is lower.
Model utility content
The purpose of this utility model is to provide gear reducer and gear linkage mechanism thereof, the problem such as to be intended to solve in the gear linkage mechanism of prior art that reliability is low, the life-span is short, complex structure takes up room large.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of gear linkage mechanism, comprise input gear, output gear and the rotating shaft that described input gear is coaxially connected with described output gear, described input gear comprises toothed region and is positioned at the joint below described toothed region, the center of described output gear has the receiving groove that can stretch into for described joint, also comprise pretension and be arranged in elastic component in described receiving groove, described elastic component has center hole, described joint is placed in described center hole, the inwall of described elastic component is provided with projection, the outer wall of described joint is provided with the groove that can snap in for described projection.
Alternatively, described elastic component is enclosed by least two shell fragments and forms, and the inwall of described receiving groove is provided with the draw-in groove that can snap in for the two ends of each described shell fragment.
Alternatively, to interior projection at least two projection in described receiving groove, described draw-in groove is arranged along described projection length direction, and on each described projection, left and right is arranged with draw-in groove described in two.
Alternatively, be provided with bayonet socket between two draw-in grooves of each described projection, the wall between described bayonet socket and each described draw-in groove is rounding off face.
Alternatively, the end face of each described projection extends internally the limiting stopper moved axially for limiting described shell fragment.
Alternatively, the cross section of described projection is V-shape, the shape of described groove and the mating shapes of described projection.
Alternatively, the center of described receiving groove is provided with attachment post, is provided with the attachment hole that can stretch into for described attachment post bottom described joint.
Alternatively, Spielpassung between described attachment post and described attachment hole.
Alternatively, described rotating shaft passes outside described output gear through described toothed region, joint and described attachment post successively, and described rotating shaft and described toothed region, joint interference fit.
The utility model additionally provides a kind of gear reducer, has above-mentioned gear linkage mechanism in it.
In the utility model, elastic component pretension is arranged in receiving groove, elastic component by the connection protruding coordinating with groove realizing input gear and output gear with axis of rotation, when output gear is with when being driven part movement to meet obstructions, output gear stops operating, and the moment of torsion of rotating shaft and input gear constantly increases, when the moment of torsion of input gear is greater than the distortion of elastic component, elastic component generation deformation, be raised in groove and depart from, output gear and elastic component stop operating, and input gear is in slipping state and continue idle running, thus automatically cut off the power transmission of output gear, output gear or obstacle is avoided to be damaged under moment of torsion and external resistance effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the toothed-wheel gear that the utility model embodiment provides;
Fig. 2 is the exploded view of the toothed-wheel gear that the utility model embodiment provides;
Fig. 3 is the sectional view of the utility model embodiment middle gear linkage;
Fig. 4 is the scheme of installation of shell fragment and output gear in the utility model embodiment;
Structural representation when Fig. 5 is the normal operation of the utility model embodiment middle gear linkage;
Structural representation when Fig. 6 is the idle running of the utility model embodiment middle gear linkage;
10-input gear; 11-toothed region; 12-joint; 13-groove;
20-output gear; 21-receiving groove; 22-attachment post; 23-draw-in groove;
24-projection; 25-bayonet socket; 26-limiting stopper; 27-wall;
30-rotating shaft; 40-elastic component; 41-center hole; 42-is protruding;
43-shell fragment.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
It should be noted that, when element is called as " being fixed on " or " being arranged at " another element, it can directly on another element or can indirectly be fixed on by the 3rd parts or be arranged on another element.
Also it should be noted that, the orientation term such as left and right, upper and lower in the present embodiment, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
With reference to Fig. 1, Fig. 2, the gear linkage mechanism that the utility model embodiment provides, comprise input gear 10, output gear 20, by coaxial to input gear 10 and output gear 20 rotating shaft 30 that is connected and elastic component 40.Wherein, input gear 10 comprises toothed region 11 and is positioned at the joint 12 below toothed region 11, and the center of output gear 20 is provided with receiving groove 21, and the joint 12 of input gear 10 stretches in receiving groove 21.In the present embodiment, the center of receiving groove 21 is provided with attachment post 22, is provided with the attachment hole (not shown) that can stretch into for attachment post 22 bottom joint 12.Spielpassung between attachment post 22 and attachment hole.Rotating shaft 30 passes outside output gear 20 through toothed region 11, joint 12 and attachment post 22 successively, and rotating shaft 30 and toothed region 11, joint 12 interference fit.Elastic component 40 pretension is arranged in receiving groove 21, and elastic component 40 has center hole 41, and in joint 12 centering hole 41, the inwall of elastic component 40 is provided with protruding 42, and the outer wall of joint 12 is provided with the groove 13 that can snap in for protruding 42.
In the utility model embodiment, elastic component 40 pretension is arranged in receiving groove 21, elastic component 40 by protruding 42 with the coordinating the connection that realizes input gear 10 and output gear 20 of groove 13 and rotating with rotating shaft 30, when output gear 20 is with when being driven part movement to meet obstructions, output gear 20 stops operating, and rotating shaft 30 and the moment of torsion of input gear 10 constantly increase, when the moment of torsion of input gear 10 is greater than the distortion of elastic component 40, there is deformation in elastic component 40, protruding 42 depart from groove 13, output gear 20 and elastic component 40 stop operating, and input gear 10 is in slipping state and continue idle running, thus automatically cut off the power transmission of output gear 20, output gear 20 or outer barrie thing is avoided to be damaged under moment of torsion and external resistance effect, better reliability.
Elastic component 40 preferably adopts four shell fragments 43 to enclose and forms.Shell fragment 43 adopts the metallic material with favorable elasticity to make, and thinks that linking mechanism provides good elastic force to make protection moment enough large.Certainly, elastic component 40 also can be a shell fragment, two shell fragments, and three shell fragments or more shell fragment encloses and forms.Four shell fragments 43 are when enclosing, and each other without connection, the two ends of each shell fragment 43 are individually fixed in inside receiving groove 21.Particularly, the inwall of receiving groove 21 is provided with the draw-in groove 23 that can snap in for the two ends of each shell fragment 43.
Particularly, receiving groove 21 inwall is inwardly convexly equipped with four projections 24, and draw-in groove 23 is arranged along projection 24 length direction and short transverse, and each projection 24 is symmetrical set two draw-in grooves 23.Between four projections 24, interval is arranged, and like this, namely a shell fragment 43 is fixed between two projections 24.
With reference to Fig. 3, Fig. 4, be provided with bayonet socket 25 between two draw-in grooves 23 of each projection 24, the wall 27 between bayonet socket 25 and each draw-in groove 23 is rounding off face.Like this, when mounting elastic sheet 43, first the two ends of shell fragment 43 are placed in respectively two bayonet socket 25 places of adjacent projection 24, the end then promoting shell fragment 43 along rounding off face makes the end of shell fragment 43 snap in the draw-in groove 23 of projection 24, thus is fixed by shell fragment 43.
In the present embodiment, to extend internally limiting stopper 26 at the end face of each projection 24, moving axially for limiting shell fragment 43, preventing shell fragment 43 from deviating from by receiving groove 21.
With reference to Fig. 1, the cross section of elastic component 40 projection 42 is V-shape, the shape of groove 13 and the mating shapes of protruding 42.Adopt this V-shape, be convenient to protruding 42 and snap in groove 13, be also convenient to protruding 42 and depart from groove 13.Certainly, the shape of protruding 42 also can adjust as required, and the height as increased protruding 42 can improve protection moment.
With reference to Fig. 4, in the present embodiment, gear linkage mechanism when mounted, first shell fragment 43 is installed in receiving groove 21, prevents shell fragment 43 from deviating from by the draw-in groove 23 on projection 24, then input gear 10 is arranged on the attachment post 22 in the middle of output gear 20, simultaneously, the projection 42 of shell fragment 43 is coordinated with the groove 13 of input gear 10, makes there is certain pretightening force between input gear 10 and shell fragment 43, avoid shell fragment 43 to loosen.
With reference to Fig. 5, gear linkage mechanism is when normal rotation, and input gear 10 is engaged with external power supply by toothed region 11, and output gear 20 is engaged with driving part.Power source drives input gear 10 to rotate, and the projection 42 of shell fragment 43 is placed in groove 13 by pretightening force, and now, input gear 10, shell fragment 43 and output gear 20 integrally rotate, and then drives by driving part, i.e. linkage status.
With reference to Fig. 6, when being met obstructions by driving part movement, output gear 20 stop motion, the moment of torsion that power source is supplied to input gear 10 constantly increases, when the moment of torsion on input gear 10 is greater than shell fragment 43 deformation force, shell fragment 43 distortion cause triangular hill 42 to produce from input gear 10 groove 13, now output gear 20 and shell fragment 43 static, and input gear 10 continues idle running, i.e. slipping state.
The utility model additionally provides a kind of gear reducer, has above-mentioned gear linkage mechanism in it.Owing to adopting above-mentioned gear linkage mechanism, when output gear 20 transships, utilize the projection 42 of shell fragment 43 to regulate with the disengaging of groove 13 and protect torque, protection gear reducer is injury-free, and meanwhile, gear linkage mechanism structure is simple, volume is little, occupies little space; And, when gear reducer is applied on smart machine, utilize this gear linkage mechanism, when output runs into obstacle or load is excessive, automatically can cut off output, more can highlight intelligence and the equipment protection effect of smart machine.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a gear linkage mechanism, comprise input gear, output gear and the rotating shaft that described input gear is coaxially connected with described output gear, described input gear comprises toothed region and is positioned at the joint below described toothed region, the center of described output gear has the receiving groove that can stretch into for described joint, it is characterized in that, also comprise pretension and be arranged in elastic component in described receiving groove, described elastic component has center hole, described joint is placed in described center hole, the inwall of described elastic component is provided with projection, the outer wall of described joint is provided with the groove that can snap in for described projection.
2. gear linkage mechanism according to claim 1, is characterized in that, described elastic component is enclosed by least two shell fragments and forms, and the inwall of described receiving groove is provided with the draw-in groove that can snap in for the two ends of each described shell fragment.
3. gear linkage mechanism according to claim 2, is characterized in that, to interior projection at least two projection in described receiving groove, described draw-in groove is arranged along described projection length direction, and on each described projection, left and right is arranged with draw-in groove described in two.
4. gear linkage mechanism according to claim 3, is characterized in that, is provided with bayonet socket between two draw-in grooves of each described projection, and the wall between described bayonet socket and each described draw-in groove is rounding off face.
5. gear linkage mechanism according to claim 3, is characterized in that, the end face of each described projection extends internally the limiting stopper moved axially for limiting described shell fragment.
6. gear linkage mechanism according to any one of claim 1 to 5, is characterized in that, the cross section of described projection is V-shape, the shape of described groove and the mating shapes of described projection.
7. gear linkage mechanism according to claim 1, is characterized in that, the center of described receiving groove is provided with attachment post, is provided with the attachment hole that can stretch into for described attachment post bottom described joint.
8. gear linkage mechanism according to claim 7, is characterized in that, Spielpassung between described attachment post and described attachment hole.
9. the gear linkage mechanism according to claim 7 or 8, is characterized in that, described rotating shaft passes outside described output gear through described toothed region, joint and described attachment post successively, and described rotating shaft and described toothed region, joint interference fit.
10. a gear reducer, is characterized in that: have gear linkage mechanism as claimed in any one of claims 1-9 wherein in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840807.6U CN205136504U (en) | 2015-10-27 | 2015-10-27 | Gear reducer and gear link gear thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840807.6U CN205136504U (en) | 2015-10-27 | 2015-10-27 | Gear reducer and gear link gear thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136504U true CN205136504U (en) | 2016-04-06 |
Family
ID=55622301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840807.6U Active CN205136504U (en) | 2015-10-27 | 2015-10-27 | Gear reducer and gear link gear thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136504U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889444A (en) * | 2015-10-27 | 2016-08-24 | 深圳市兆威机电有限公司 | Gear speed reducer and gear linkage mechanism thereof |
| WO2017070839A1 (en) * | 2015-10-27 | 2017-05-04 | 深圳市兆威机电有限公司 | Gear reducer and gear linkage mechanism thereof |
| CN112797718A (en) * | 2021-02-26 | 2021-05-14 | 北京小米移动软件有限公司 | Door opening ejection device, door opening assembly and refrigerator |
| WO2023173549A1 (en) * | 2022-03-15 | 2023-09-21 | 箭牌家居集团股份有限公司 | Float adjustment mechanism |
-
2015
- 2015-10-27 CN CN201520840807.6U patent/CN205136504U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889444A (en) * | 2015-10-27 | 2016-08-24 | 深圳市兆威机电有限公司 | Gear speed reducer and gear linkage mechanism thereof |
| WO2017070839A1 (en) * | 2015-10-27 | 2017-05-04 | 深圳市兆威机电有限公司 | Gear reducer and gear linkage mechanism thereof |
| CN112797718A (en) * | 2021-02-26 | 2021-05-14 | 北京小米移动软件有限公司 | Door opening ejection device, door opening assembly and refrigerator |
| WO2023173549A1 (en) * | 2022-03-15 | 2023-09-21 | 箭牌家居集团股份有限公司 | Float adjustment mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong Shenzhen Baoan District Fuyong Street Dragon King Temple Industrial Park 18 Patentee after: Shenzhen mechatronics, mechatronics and Limited by Share Ltd Address before: 518000 Guangdong Shenzhen Baoan District Fuyong Street Dragon King Temple Industrial Park 18 Patentee before: Shenzhen Zhaowei Machinery & Electronics Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |