CN207005205U - Speed reduction gearing - Google Patents
Speed reduction gearing Download PDFInfo
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- CN207005205U CN207005205U CN201720783375.9U CN201720783375U CN207005205U CN 207005205 U CN207005205 U CN 207005205U CN 201720783375 U CN201720783375 U CN 201720783375U CN 207005205 U CN207005205 U CN 207005205U
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- gear
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- speed reduction
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Abstract
It the utility model is related to a kind of speed reduction gearing, front end gear stage is made up of the worm drive with worm and worm wheel, rear-end transmission level is made up of gear train, the worm gear of front end gear stage passes through gear train and the driving wheel drive connection of rear-end transmission level, the driving wheel of rear-end transmission level is active external gear, the driven pulley of rear-end transmission level is ring gear or driven external gear, and the driven pulley in rear-end transmission level has PTO.The beneficial effects of the utility model are：First order transmission uses worm and gear, and noise control is good, size relative compact；Afterbody transmission uses parallel axes or nearly parallel-axes gears group, this gear engagement connected mode is simple, ripe, reliable, the axial direction of the driven ring gear or external gear of rear-end transmission level have it is certain can flying height so that gear in rotation process can axle center self-regulation realize good engagement.
Description
Technical field
A kind of speed reduction gearing is the utility model is related to, is mainly used in the linear actuators in electric furniture.
Background technology
Typically conventional deceleration device carries out deceleration transmission using planetary gearsets more, and one uses two-stage planet group
The embodiment of transmission, it can also reach same fast ratio, but structure is relatively large, because planetary gearsets speed reducing ratio is generally below
The speed reducing ratio of worm and wormwheel, so after the deceleration of front end gear stage, the rotating speed of gear is still higher, and noise is bigger.When
When being slowed down using worm and gear as front end gear stage, speed reducing ratio is very big, the front end gear stage for slowing down to obtain by worm and gear
The rotating speed of output gear is relatively low, and noise is relatively small.
The rear-end transmission level gear drive of patent 200980120676.1 of sharp Nanogram Corp. uses crown wheel and helical gear
Engagement, the engagement connection of this tooth is complicated, requires very high for assembly precision, i.e., for housing morpheme size tolerance very
It is high.Friction easily causes gap for a long time for the axle journal of housing and the hole of crown wheel, and gap can cause the axis of crown wheel to incline
Tiltedly, then the crown wheel one of helical gear relative with two positions is easily disengaged from, then another helical gear stress
Moment is multiplied, and easily causes helical gear flank of tooth plastic deformation or break of gear tooth.
Utility model content
The technical problems to be solved in the utility model is：Based on above mentioned problem, there is provided a kind of speed reduction gearing.
Technical scheme is used by the utility model solves its technical problem：A kind of speed reduction gearing, is mainly used in
In linear actuators in electric furniture, transmission device has multiple gear stages, and front end gear stage is by with worm and worm wheel
Worm drive is formed, and rear-end transmission level is made up of gear train, and worm gear is driven by the driving wheel in gear train and rear-end transmission level
Dynamic connection, the rotation axis of the driving wheel in intermediate transmission level is relative to the rotation axis of worm screw in the gear stage of front end is vertical or base
This is vertical, and the driving wheel in rear-end transmission level be active external gear, and the driven pulley in rear-end transmission level is ring gear or driven outer
Gear, the rotation axis of the driving wheel in rear-end transmission level are parallel or basic relative to the rotation axis of worm screw in the gear stage of front end
It is parallel, and the driven pulley in rear-end transmission level has PTO, and the PTO is arranged in front end gear stage
In the extension of middle worm screw either substantially in the gear stage of front end in the extension of worm screw or with the gear stage of front end
Worm screw is parallel.
Further, intermediate transmission level is made up of gear train, and gear train is bevel gear set or bevel gear set or worm and wormwheel
Group, and the axis of bevel gear set or bevel gear set or worm gear group interlocks, a helical teeth in intermediate transmission level gear train
Wheel/bevel gear/worm screw/worm gear is connected with the driven worm gear in the gear stage of front end, and another in intermediate transmission level gear train is oblique
Gear/bevel gear/worm/worm-wheel is connected with the active external gear in rear-end transmission level.
Further, helical gear/bevel gear/snail of the worm gear in the gear stage of front end and connected intermediate transmission level
Bar/worm gear is arranged to synchronously rotate coaxially integrative-structure or connects into overall structure, the active external gear in rear-end transmission level
It is also configured to synchronously rotate coaxially integrative-structure with helical gear/bevel gear/worm/worm-wheel of connected intermediate transmission level
Or connect into overall structure.
Further, the worm gear in the gear stage of front end includes the first worm gear and the second worm gear being arranged symmetrically, rear-end transmission
Active external gear in level includes the first external gear and the second external gear being arranged symmetrically, and intermediate transmission level is two be arranged symmetrically
To bevel gear set or bevel gear set or worm gear group.
Further, filled in the worm gear in the gear stage of front end, the active external gear in rear-end transmission level and intermediate transmission level
Have mandrel.
Further, transmission device includes the housing of hollow cylindrical, and housing has worm screw, the snail accommodated in the gear stage of front end
The second chamber of the first chamber and receiving rear-end transmission level of wheel and intermediate transmission level.
Further, when using ring gear scheme, housing bottom is provided with dish type axle bed, and the face boss of dish type axle bed one sinks
Hole is arranged on housing on the axle journal in a chamber of motor, and being screwed in screw from the counterbore of the another side of dish type axle bed will
Dish type axle bed is fixed on the axle journal of housing.
Further, the intermediate transmission level helical gear or cone parallel or substantially parallel with the worm axis in the gear stage of front end
One or more antifriction pads or bearing are installed on the end face of gear or worm gear or the close motor of worm screw；Intermediate transmission level
Perpendicular or generally perpendicular helical gear or bevel gear or worm gear or the close shell of worm screw with the worm axis in the gear stage of front end
One or more antifriction pads or bearing are installed on the end face of body.
The beneficial effects of the utility model are：Front end gear stage uses worm and gear, and noise control is good, and size is relatively tight
Gather；Rear-end transmission level uses parallel axes or nearly parallel-axes gears group, and this gear engagement connected mode is simple, ripe, reliable, after
Hold the driven ring gear or external gear of gear stage axial direction have it is certain can flying height so that gear can in rotation process
Axle center self-regulation realizes good engagement.
Brief description of the drawings
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the explosive view of the utility model embodiment 1；
Fig. 2 is the top view one of the utility model embodiment 1；
Fig. 3 is the top view two of the utility model embodiment 1；
Fig. 4 is that Fig. 3 is A-A to revolved sectional view；
Fig. 5 is the explosive view of the utility model embodiment 2；
Fig. 6 is the explosive view of the utility model embodiment 3；
Wherein：1. housing, 2. worm screws, 3. output shafts, 4. worm gear alternating axis driving wheel integral pieces, 5. little gear alternating axis from
Driving wheel integral piece, 6. gear rings, 7. dish type axle beds, 8. antifriction pads, 9. long mandrels, 10. worm gear bevel gear integral pieces, 11. small teeth
Wheel bevel gear integral piece, 12. big external gears, 13. short mandrels, 14. worm and gear integral pieces, 15. little gear worm gear integral pieces,
16. bearing.
Embodiment
The utility model is further described presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram only to show
Meaning mode illustrates basic structure of the present utility model, therefore it only shows the composition relevant with the utility model.
Embodiment 1
One kind as shown in Figures 1 to 4 is interlocked shaft type speed reduction gearing, is assembled together with corresponding motor, including
Motor front end cover, housing 1 and connection end cap, housing 1 are located between motor front end cover and connection end cap, worn on motor front end cover
If being provided with worm screw 2, union end, which covers to wear, is provided with output shaft 3, and the intracavitary of housing 1 is provided with two groups of worm gear alternating axis driving wheels
Integral piece 4 and two groups of little gear alternating axis driven pulley integral pieces 5, the upper end of output shaft 3 are connected with gear ring 6, worm screw 2 and worm gear
The worm gear engagement of alternating axis driving wheel integral piece 4, alternating axis driving wheel and the little gear of worm gear alternating axis driving wheel integral piece 4 are handed over
The alternating axis driven pulley engagement of wrong axle driven pulley integral piece 5, little gear and the gear ring 6 of little gear alternating axis driven pulley integral piece 5
Internal tooth engagement.
The bottom of housing 1 is provided with dish type axle bed 7, and the counterbore of the face boss of dish type axle bed 7 one is arranged on housing 1 backwards to the one of motor
On axle journal in individual chamber, screwed in screw from the counterbore of the another side of dish type axle bed 7 and dish type axle bed 7 is fixed on housing 1
On axle journal.
Little gear alternating axis driven pulley integral piece 5 and the diameter parallel of worm screw 2, it is provided with one on end face close to motor
Bearing 16；Worm gear alternating axis driving wheel integral piece 4 is vertical with the axis of worm screw 2, and it is provided with one on end face close to shell body
Bearing 16.Bearing 16 is miniature thrust ball bearing F4-9M.
It is respectively interposed in little gear alternating axis driven pulley integral piece 5 and worm gear alternating axis driving wheel integral piece 4 provided with the long heart
Axle 9, short mandrel 13.Long mandrel 9 in little gear alternating axis driven pulley integral piece 5 is set with the diameter parallel of worm screw 2, its upper end
It is fixed on below motor front end cover, its bottom is fixed on dish type axle bed 7；It is short in worm gear alternating axis driving wheel integral piece 4
Mandrel 13 is vertically arranged with the axis of worm screw 2, and its both ends is fixed on housing 1.
Gear ring 6 is in the circle peviform of opening upwards, and the center of gear ring 6 offers connecting hole, and connecting hole inwall is spent provided with connection
Key, dish type axle bed 7 are located in the pelvic cavity of gear ring 6.Gear ring 6 with output shaft spline by being connected to be driven.
Embodiment 2
Such as a kind of bevel gear type speed reduction gearing that Fig. 5 shows, it is assembled together with corresponding motor, including motor front end
Lid, housing 1 and connection end cap, housing 1 are located between motor front end cover and connection end cap, wear and be provided with motor front end cover
Worm screw 2, union end, which covers to wear, is provided with output shaft 3, and the intracavitary of housing 1 is provided with two groups of worm gear bevel gear integral pieces 10 and two groups
Little gear bevel gear integral piece 11, the upper end of output shaft 3 are connected with big external gear 12, worm screw 2 and worm gear bevel gear integral piece
10 worm gear engagement, the bevel gear of worm gear bevel gear integral piece 10 engages with the bevel gear of little gear bevel gear integral piece 11, small
The little gear of gear bevel gear integral piece 11 engages with the big external tooth of external gear 12.Have in big external gear 12 for exporting axis connection
Transmit the internal spline of moment of torsion.
Two chambers are by transverse wall interval, but chamber is endless totally-enclosed mutually, and the side of transverse wall towards motor is provided with
Recess, for the bevel gear of worm gear bevel gear integral piece 10 and little gear bevel gear integral piece 11, and the opposite side of transverse wall has
There are the little gear and big external gear 12 of little gear bevel gear integral piece 11.
Little gear bevel gear integral piece 11 and the diameter parallel of worm screw 2, it is provided with one or more on the end face of housing 1
Individual antifriction pad 8；Worm gear bevel gear integral piece 10 is vertical with the axis of worm screw 2, its be provided with the end face of housing 1 one or
Multiple antifriction pads 8.
It is respectively interposed in little gear bevel gear integral piece 11, worm gear bevel gear integral piece 10 provided with long mandrel 9, short mandrel
13.Long mandrel 9 in little gear bevel gear integral piece 11 is set with the diameter parallel of worm screw 2, and its upper end is fixed on motor front end
Lid lower section, its bottom is fixed on union end and covered；10 short mandrel 13 and the diameter parallel of worm screw 2 in worm gear bevel gear integral piece
Set, its both ends is fixed on housing 1.
Big external gear 12 is in the circle peviform of opening upwards, and its center offers connecting hole, and connecting hole inwall is provided with connection and used
Internal spline.Big external gear 12 with output shaft spline by being connected to be driven.
Embodiment 3
A kind of twin worm worm-gear type speed reduction gearing as shown in Figure 6, is assembled together with corresponding motor, including electricity
Machine drive end bearing bracket, housing 1 and connection end cap, housing 1 are located between motor front end cover and connection end cap, worn on motor front end cover
Worm screw 2 is installed, union end, which covers to wear, is provided with output shaft 3, and the intracavitary of housing 1 is provided with two groups of Hes of worm and gear integral piece 14
Two groups of little gear worm gear integral pieces 15, the upper end of output shaft 3 are connected with gear ring 6, worm screw 2 and the snail of worm and gear integral piece 14
Wheel engagement, the worm screw of worm and gear integral piece 14 engage with the worm gear of little gear worm gear integral piece 15, little gear worm gear integral piece
15 little gear engages with the internal tooth of gear ring 6.
The bottom of housing 1 is provided with dish type axle bed 7, and the counterbore of the face boss of dish type axle bed 7 one is arranged on housing 1 backwards to the one of motor
On axle journal in individual chamber, screwed in screw from the counterbore of the another side of dish type axle bed 7 and dish type axle bed 7 is fixed on housing 1
On axle journal.
Little gear worm gear integral piece 15 and the diameter parallel of worm screw 2, it is provided with one or more on end face close to motor
Antifriction pad 8；Worm and gear integral piece 14 is vertical with the axis of worm screw 2, and it is provided with one or more on end face close to shell body
Individual antifriction pad 8.
It is respectively interposed in little gear worm gear integral piece 15 and worm and gear integral piece 14 provided with long mandrel 9, short mandrel 13.It is small
Long mandrel 9 in gear-worm gear integral piece 15 is set with the diameter parallel of worm screw 2, and its upper end is fixed on below motor front end cover,
Its bottom is fixed on dish type axle bed 7；Short mandrel 13 in worm and gear integral piece 14 is vertically arranged with the axis of worm screw 2, its
Both ends are fixed on housing 1.
Gear ring 6 is in the circle peviform of opening upwards, and the center of gear ring 6 offers connecting hole, and connecting hole inwall is spent provided with connection
Key, dish type axle bed 7 are located in the pelvic cavity of gear ring 6.Gear ring 6 with output shaft spline by being connected to be driven.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right
Property scope.
Claims (8)
1. a kind of speed reduction gearing, it is mainly used in the linear actuators in electric furniture, it is characterized in that：Described transmission dress
Put and be made up of with multiple gear stages, front end gear stage the worm drive with worm and worm wheel, rear-end transmission level is by gear
Group is formed, and worm gear is by the driving wheel drive connection in gear train and rear-end transmission level, the rotation of the driving wheel in intermediate transmission level
Shaft axis are perpendicular or generally perpendicular relative to the rotation axis of worm screw in the gear stage of front end, based on the driving wheel in rear-end transmission level
Dynamic external gear, the driven pulley in rear-end transmission level are ring gear or driven external gear, the rotation of the driving wheel in rear-end transmission level
Axis is parallel or substantially parallel relative to the rotation axis of worm screw in the gear stage of front end, and the driven pulley tool in rear-end transmission level
Dynamic output device, the PTO are arranged in the gear stage of front end in the extension of worm screw or substantially in front end
It is in the extension of worm screw or parallel with the worm screw in the gear stage of front end in gear stage.
2. speed reduction gearing according to claim 1, it is characterized in that：Described intermediate transmission level is made up of gear train,
Gear train is bevel gear set or bevel gear set or worm gear group, and the axle of bevel gear set or bevel gear set or worm gear group
Line interlocks, a helical gear/bevel gear/worm screw/worm gear in intermediate transmission level gear train and the driven snail in the gear stage of front end
Wheel connects, another helical gear/bevel gear/worm/worm-wheel in intermediate transmission level gear train and the active in rear-end transmission level
External gear connects.
3. speed reduction gearing according to claim 2, it is characterized in that：Worm gear in described front end gear stage and and its
Helical gear/bevel gear/worm screw/worm gear of the intermediate transmission level of connection is arranged to synchronously rotate coaxially integrative-structure or connected into
Overall structure, helical gear/bevel gear/worm gear of active external gear and connected intermediate transmission level in rear-end transmission level/
Worm screw is also configured to synchronously rotate coaxially integrative-structure or connects into overall structure.
4. speed reduction gearing according to claim 1, it is characterized in that：Worm gear in described front end gear stage includes pair
Claim the first worm gear and the second worm gear of arrangement, the active external gear in rear-end transmission level include the first external gear being arranged symmetrically and
Second external gear, intermediate transmission level are the two pairs of bevel gear sets or bevel gear set or worm gear group being arranged symmetrically.
5. speed reduction gearing according to claim 1, it is characterized in that：Worm gear, rear end in described front end gear stage
Mandrel is equipped with active external gear and intermediate transmission level in gear stage.
6. speed reduction gearing according to claim 1, it is characterized in that：Described transmission device includes the shell of hollow cylindrical
Body, housing have the worm screw accommodated in the gear stage of front end, the first chamber of worm gear and intermediate transmission level and receiving rear-end transmission
The second chamber of level.
7. speed reduction gearing according to claim 6, it is characterized in that：When using ring gear scheme, housing bottom is set
There is dish type axle bed, the counterbore of the face boss of dish type axle bed one is arranged on housing on the axle journal in a chamber of motor, uses spiral shell
Follow closely to screw in from the counterbore of the another side of dish type axle bed and dish type axle bed is fixed on the axle journal of housing.
8. speed reduction gearing according to claim 3, it is characterized in that：In described intermediate transmission level and front end gear stage
The parallel or substantially parallel helical gear of worm axis or bevel gear or the end face of worm gear or the close motor of worm screw on be provided with
One or more antifriction pads or bearing；Intermediate transmission level it is perpendicular or generally perpendicular with the worm axis in the gear stage of front end
One or more antifriction pads or bearing are installed on the end face of helical gear or bevel gear or worm gear or the close shell body of worm screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783375.9U CN207005205U (en) | 2017-06-30 | 2017-06-30 | Speed reduction gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720783375.9U CN207005205U (en) | 2017-06-30 | 2017-06-30 | Speed reduction gearing |
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| Publication Number | Publication Date |
|---|---|
| CN207005205U true CN207005205U (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720783375.9U Active CN207005205U (en) | 2017-06-30 | 2017-06-30 | Speed reduction gearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269768A (en) * | 2017-06-30 | 2017-10-20 | 常州市凯迪电器股份有限公司 | Speed reduction gearing |
-
2017
- 2017-06-30 CN CN201720783375.9U patent/CN207005205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269768A (en) * | 2017-06-30 | 2017-10-20 | 常州市凯迪电器股份有限公司 | Speed reduction gearing |
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