CN207333622U - A kind of decelerating movable teeth device and its ring gear - Google Patents
A kind of decelerating movable teeth device and its ring gear Download PDFInfo
- Publication number
- CN207333622U CN207333622U CN201720569990.XU CN201720569990U CN207333622U CN 207333622 U CN207333622 U CN 207333622U CN 201720569990 U CN201720569990 U CN 201720569990U CN 207333622 U CN207333622 U CN 207333622U
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- gear ring
- flange
- flange portion
- gear
- face
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Abstract
The utility model discloses a kind of decelerating movable teeth device and its ring gear, ring gear includes the gear ring and flange being connected with each other, and the flange is mutually communicated with the gear ring, and is coaxially disposed with the gear ring；The flange includes first flange portion and second flange portion, and the gear ring includes the first gear ring portion and the second gear ring portion, and the first flange portion and the first gear ring portion are affixed, and the second flange portion and the second gear ring portion are affixed；The first flange portion and the second flange portion cooperatively form complete flange；The first gear ring portion and the second gear ring portion cooperatively form complete gear ring；The internal tooth curve in the first gear ring portion and the internal tooth curve tandem array in the second gear ring portion form the internal tooth curve of closing.It is simple in structure based on said structure, processed easy to equipment, and then improve processing efficiency.
Description
Technical field
Mechanical fitting technical field is the utility model is related to, more particularly, to a kind of ring gear of teeth-adjustable reducer.This reality
A kind of decelerating movable teeth device including above-mentioned ring gear is further related to new.
Background technology
At present, the input and output of different drive ratios are often related in transmission field, so as to effectively meet different
Equipment is to the demand of power, and therefore, deceleration device is widely used.Although conventional multi-level gear reduction unit can effectively meet not
With the conversion of gearratio, but since quality is big, driving torque is small, volume is larger etc., drawback cannot be effective due to this kind of retarder
Meet the installation of some equipment or using space requirement, such as artificial small robot building.To solve the above-mentioned problems, oscillating tooth
Gear reducer is designed, so as to effectively solve above-mentioned drawback.But the inner ring of the ring gear of teeth-adjustable reducer is due to continuous
Internal tooth, and the shape of internal tooth and the required precision of curve are very high, therefore, equipment processing inconvenience, while processing efficiency is low.
Therefore it provides a kind of ring gear of decelerating movable teeth device, to simple in structure, is processed, and then improve easy to equipment
Processing efficiency, just becomes those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of ring gear of decelerating movable teeth device, to simple in structure, easy to equipment
Processing, and then improve processing efficiency.Another purpose of the utility model is to provide a kind of oscillating tooth including above-mentioned ring gear and subtracts
Speed variator.
To achieve these goals, the utility model provides a kind of ring gear of decelerating movable teeth device, including is connected with each other
Gear ring and flange, the flange is mutually communicated with the gear ring, and is coaxially disposed with the gear ring；The flange includes first
Flange portion and second flange portion, the gear ring include the first gear ring portion and the second gear ring portion, the first flange portion and described the
One gear ring portion is affixed, and the second flange portion and the second gear ring portion are affixed；The first flange portion and the second flange
Portion cooperatively forms complete flange；The first gear ring portion and the second gear ring portion cooperatively form complete gear ring；First tooth
The internal tooth curve in circle portion and the internal tooth curve tandem array in the second gear ring portion form the internal tooth curve of closing.
Preferably, the first flange portion includes first end and second end, and the second flange portion includes the 3rd end
With the 4th end；The first flange portion and the second flange portion cooperatively form complete flange, by the first end with it is described
3rd end coordinates and the second end coordinates with the 4th end.
Preferably, the end face of the first end is stepped to be higher than close to the end face of excircle close to the end of inner peripheral surface
Face；The end face of the second end is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；
The end face of the second end is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；It is described
The end face of second end is stepped, is higher than close to the end face of excircle close to the end face of inner peripheral surface.
Preferably, the first end is affixed by the first locking device and the 3rd end, and the second end passes through second
Locking device and the 4th end are affixed；The quantity at least two of first locking device, and spacing is set；Described second
The quantity at least two of locking device, and spacing is set.
Preferably, the first gear ring portion includes the 5th end and the 6th end, and the second gear ring portion includes the 7th end
With the 8th end；The first gear ring portion and the second gear ring portion cooperatively form complete gear ring, by the 5th end with it is described
7th end coordinates and the 6th end coordinates with the 8th end.
Preferably, the end face at the 5th end is stepped to be higher than close to the end face of excircle close to the end of inner peripheral surface
Face；The end face at the 6th end is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；7th end
End face to be stepped, be less than close to the end face of excircle close to the end face of inner peripheral surface；The end face at the 8th end is ladder
Shape, is higher than close to the end face of inner peripheral surface close to the end face of excircle.
Preferably, the 5th end is affixed by the 3rd locking device and the 7th end, and the 6th end passes through the 4th
Locking device and the 8th end are affixed；The quantity at least two of 3rd locking device, and spacing is set；Described 4th
The quantity at least two of locking device, and spacing is set.
The utility model also provides a kind of deceleration device, including ring gear as described above.
Ring gear provided by the utility model, includes the gear ring and flange of interconnection, the flange and the gear ring
It is mutually communicated, and is coaxially disposed with the gear ring；The flange includes first flange portion and second flange portion, and the gear ring includes
First gear ring portion and the second gear ring portion, the first flange portion and the first gear ring portion are affixed, the second flange portion and institute
It is affixed to state the second gear ring portion；The first flange portion and the second flange portion cooperatively form complete flange；First gear ring
Portion and the second gear ring portion cooperatively form complete gear ring；The internal tooth curve in the first gear ring portion and the second gear ring portion
Internal tooth curve tandem array forms the internal tooth curve of closing.
In said structure, which includes flange and gear ring, and gear ring is cylindrical tube shape structure, and flange is cylindrical tube shape knot
Structure, both are coaxially fixed together, and the diameter of flange is more than the diameter of gear ring.Flange is divided into first flange portion and second flange
Portion, gear ring are divided into the first gear ring portion and the second gear ring portion, and first flange portion is fixed together to form the first half with the first gear ring portion
Shell, its fixed connection mode can be the connection mode such as weld, be bolted, and second flange portion and the second gear ring portion are fixed together shape
Into the second half-shell, its fixed connection mode can be the mode such as weld, be bolted, above-mentioned first half-shell and the interconnection of the second half-shell
Complete flange and gear ring are formed together.Continuous tooth is wherein provided with the first gear ring portion, the second gear ring inner is set
There is continuous tooth, the first gear ring and the second gear ring are combined to form complete gear ring, at this time the continuous tooth of the first gear ring inner
Effectively it is connected with the continuous tooth of the second gear ring inner, the flute profile curve for the continuous tooth that both form is continuously smooth, will not be produced
Jump, the components such as the ball moved on the continuous flute profile curve, which are effectively ensured, steadily to be operated, and then realize deceleration device
Normal operation.At the same time first flange matched with second flange together with form complete flange, the appearance curve linking of the flange
Situations such as transitions smooth, no jump (drop is not present in junction), occurs, so that being smoothed out for subsequent installation be effectively ensured.
Based on said structure, component is few, simple in structure, forms gear ring since first half-shell and the second half-shell are fit, and first
The appearance and size of half-shell is consistent with the appearance and size of the second half-shell, i.e., both structure it is the same, the cross section of both is half
Circle, using the disposably processing two of identical manufacturing procedure during processing, two half-shells, which are merged, can complete overall processing.Add
During the traditional gear ring of work, since contour structures are complicated, process is cumbersome, while is needed when processing the continuous flute profile of gear ring inner
Process tool is arranged on gear ring inner, Continuous maching is carried out to gear ring, the positioner that this kind of processing method needs is complicated, together
When it is higher for the requirement on machining accuracy of equipment in process, once there is deviation, it is easy to cause the damaged of part, and
When half-shell in the application is processed, equipment can take both sides to process, and when especially processing internal continuous tooth, process equipment only needs
The side of half-shell is processed, at this time since half-shell is in open architecture, belongs to outer surface processing, is processed, adds at this time
The cutter of construction equipment can directly contact the surface of half-shell, and the machining accuracy of process equipment can be reduced effectively, while processed
During operating personnel part to be processed can be carried out to implement observation and measurement, so as to be further ensured that the processing essence of part
Degree, and then ensure the yield rate of part, it is possibility to have effect improves the efficiency of work.
Brief description of the drawings
Fig. 1 is the schematic front view of ring gear；
Fig. 2 is the signal right view in first flange portion and the first gear ring portion；
Fig. 3 is the signal right view in second flange portion and the second gear ring portion.
Wherein,
1 is first flange portion, and 11 be half groove of clutch shaft bearing, and 12 be first end, and 13 be second end；
2 be the first gear ring portion, and 21 be the 5th end, and 22 be the 6th end；
3 be second flange portion, and 31 be half groove of second bearing, and 32 be the 3rd end, and 33 be the 4th end；
4 be the second gear ring portion, and 41 be the 7th end, and 42 be the 8th end.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
Please refer to Fig.1, Fig. 1 is the schematic front view of ring gear；Fig. 2 is the signal right side in first flange portion and the first gear ring portion
View；Fig. 3 is the signal right view in second flange portion and the second gear ring portion.
In a kind of embodiment, ring gear provided by the utility model, includes the gear ring and method of interconnection
Orchid, the flange are mutually communicated with the gear ring, and are coaxially disposed with the gear ring；The flange includes 1 He of first flange portion
Second flange portion 3, the gear ring include the first gear ring portion 2 and the second gear ring portion 44, the first flange portion 1 and first tooth
Circle portion 2 is affixed, and the second flange portion 3 and the second gear ring portion 4 are affixed；The first flange portion 1 and the second flange
Portion 3 cooperatively forms complete flange；The first gear ring portion 2 and the second gear ring portion 4 cooperatively form complete gear ring；Described first
The internal tooth curve in gear ring portion 2 and the internal tooth curve tandem array in the second gear ring portion 4 form the internal tooth curve of closing.
In said structure, which includes flange and gear ring, and gear ring is cylindrical tube shape structure, and flange is cylindrical tube shape knot
Structure, both are coaxially fixed together, and the diameter of flange is more than the diameter of gear ring.Flange is divided into first flange portion 1 and second flange
Portion 3, gear ring are divided into the first gear ring portion 2 and the second gear ring portion 4, and first flange portion 1 is fixed together to be formed with the first gear ring portion 2
First half-shell, its fixed connection mode can be the connection mode such as weld, be bolted, and 3 and second gear ring portion 4 of second flange portion consolidates
It is connected together to form the second half-shell, its fixed connection mode can be the mode such as to weld, be bolted, above-mentioned first half-shell and the second half
Shell interconnects to form complete flange and gear ring.Continuous tooth, the second tooth are wherein provided with the first gear ring portion 2
Circle is internally provided with continuous tooth, and the first gear ring and the second gear ring are combined to form complete gear ring, at this time in the first gear ring
The continuous tooth in portion is effectively connected with the continuous tooth of the second gear ring inner, and the flute profile curve for the continuous tooth that both form is continuous flat
It is sliding, jump will not be produced, the components such as the ball moved on the continuous flute profile curve, which are effectively ensured, steadily to be operated, Jin Ershi
The normal operation of existing deceleration device.At the same time first flange matched with second flange together with form complete flange, the flange it is outer
Situations such as shape curve connection transitions smooth, no jump (drop is not present in junction), occurs, so that subsequent installation be effectively ensured
It is smoothed out.
Based on said structure, due to first half-shell and the second half-shell is fit forms gear ring, the appearance and size of first half-shell with
The appearance and size of second half-shell is consistent, i.e., both structure it is the same, the cross section of both is semicircle, and when processing uses phase
The disposably processing two of same manufacturing procedure, two half-shells, which are merged, can complete overall processing.When processing traditional gear ring, by
Complicated in contour structures, process is cumbersome, while needs process tool being arranged in the continuous flute profile of processing gear ring inner
Gear ring inner, carries out gear ring Continuous maching, and the positioner that this kind of processing method needs is complicated while right in process
It is higher in the requirement on machining accuracy of equipment, once there is deviation, it is easy to the damaged of part is caused, and the half-shell in the application adds
Man-hour, equipment can take both sides to process, and when especially processing internal continuous tooth, process equipment only needs the side progress to half-shell
Processing, at this time since half-shell is in open architecture, belongs to outer surface processing, is processed at this time, the cutter of process equipment can
The surface of half-shell is directly contacted, the machining accuracy of process equipment can be reduced effectively, while operating personnel can in process
To carry out implementing observation and measurement to part to be processed, so as to be further ensured that the machining accuracy of part, and then ensure part
Yield rate, it is possibility to have effect improves the efficiency of work.
It is to be appreciated that offering half groove 11 of clutch shaft bearing in first flange portion 1, Ka She has in second flange portion 3
Half groove 31 of second bearing, when first flange portion 1 and second flange portion 3 combination form complete flange when, half groove 11 of clutch shaft bearing
Complete bearing groove is formed with the combination of half groove 31 of second bearing, the axle center of the bearing groove and flange, gear ring are coaxial, while first axle
Hold half groove 11 and half groove 31 of second bearing is opened on the end face of gear ring, while it is big to form complete half groove diameter of bearing
In the internal diameter of gear ring.
It is further understood that, the first flange portion 1 includes first end 12 and second end 13, the second flange
Portion 3 includes the 3rd end 32 and the 4th end 33；The first flange portion 1 and the second flange portion 3 cooperatively form complete flange,
Coordinated by the first end 12 with the 3rd end 32 and the second end 13 coordinates with the 4th end 33.Said structure
In, first flange portion 1 combines to form complete flange with second flange portion 3, and specific cooperation is by 12 and the 3rd end of first end
32 coordinate, and the 3rd end 32 and the 4th end 33 coordinate what is realized, and based on this, the cross section of above-mentioned two flange portion is semicircle,
Both are circular flange equivalent to two flange portions are cooperatively formed cross section.Above-mentioned first end 12, second end 13, the 3rd end
32 is consistent with the thickness (i.e. cross section radial dimension) at the 4th end 33, can effectively ensure that 1 and second method of first flange portion at this time
The blue combination of portion 3 can smoothly transit, so as to ensure the stability of deceleration device operation.
Specifically, the end face of the first end 12 is stepped to be higher than close to the end face of excircle close to inner peripheral surface
End face；The end face of the second end 13 is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；Described
The end face at two ends 13 is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；The end of the second end 13
Face is stepped, is higher than close to the end face of excircle close to the end face of inner peripheral surface.In said structure, in first end 12 and the 3rd
The junction at end 32 is stepped, and the junction at second end 13 and the 4th end 33 is stepped, above-mentioned first end 12 towards the 3rd
The end face at end 32 is stepped, it is higher than close to the end face of inner peripheral surface, the 3rd end 32 towards first close to the end face of excircle
The end face at end 12 is also to be stepped, and the shape of its stairstepping and first end 12 is on the contrary, using the structure, both energy in combination
Enough effectively positioning；Above-mentioned second end 13 is stepped towards the end face at the 4th end 33, it is close to the end face of excircle less than close
The end face of inner peripheral surface, the 4th end 33 are also stepped, its stairstepping and the shape of first end 12 towards the end face of first end 12
On the contrary, using the structure, both can effectively position shape in combination.Based on said structure, first flange portion 1 and second flange
Portion 3 can realize precise positioning when combining, so that transition smooth-going of both junctions be effectively ensured, ensure the stability that the later stage uses.
It is to be appreciated that the positioning of 3 two junctions in first flange portion 1 and second flange portion can also use other shapes
Formula, the holding tank such as to match in the one end in first flange portion 1 setting lug boss, other end setting and lobe profile, second
The set-up mode of flange portion 3 is opposite with first flange portion 1.
Further, the first end 12 is affixed by the first locking device and the 3rd end 32, the second end 13
It is affixed by the second locking device and the 4th end 33；The quantity at least two of first locking device, and spacing is set
Put；The quantity at least two of second locking device, and spacing is set.Said structure, first flange portion 1 and second flange
It is fixed respectively by the first locking device and the second locking device after the connection in portion 3, the first locking device is locking screw
Nail, offers threaded hole on the outer circumference surface of first end 12, and lock-screw is resisted against second end by first end 12 during locking
On 13 outer circumference surface；Second locking device is also lock-screw, and threaded hole is offered on the outer circumference surface at the 4th end 33, lock
Lock-screw is resisted against on the outer circumference surface at the 3rd end 32 by the 4th end 33 when tight.First locking device and the second locking at the same time
On the premise of use demand is ensured, the quantity of both needs to be determined according to specific use demand device.Based on upper
Structure is stated, first flange portion 1 and second flange portion 3 are fixed by lock-screw, so as to ensure that both form complete method
Blue stability, and then ensure requirement.
, can be with it is to be appreciated that the fixed form in first flange portion 1 and second flange portion 3 is not limited solely to this
Both are attached fixation by other fixed forms such as pin, is repeated no more in embodiment the application.
Specifically understand, the first gear ring portion 2 includes the 5th end 21 and the 6th end 22, the second gear ring portion 4
Include the 7th end 41 and the 8th end 42；The first gear ring portion 2 and the second gear ring portion 4 cooperatively form complete gear ring, lead to
Cross that the 5th end 21 coordinates with the 7th end 41 and the 6th end 22 coordinates with the 8th end 42.In said structure,
First flange portion 1 combines to form complete flange with second flange portion 3, and specific cooperation is matched somebody with somebody by first end 12 and the 3rd end 32
To close, the 3rd end 32 and the 4th end 33 coordinate what is realized, and based on this, the cross section in above-mentioned two gear ring portion is semicircle, both
It is circular gear ring equivalent to two gear ring portions are cooperatively formed cross section.Above-mentioned 5th end 21, the 6th end 22,41 and of the 7th end
The thickness (i.e. cross section radial dimension) at the 8th end 42 unanimously, can effectively ensure that the first gear ring portion 2 and the second gear ring portion 4 at this time
Combination can smoothly transit, and the smooth-going of internal continuous flute profile curve transition is continuous, so as to ensure the stability of deceleration device operation.
Further, the end face at the 5th end 21 is stepped to be higher than close to the end face of excircle close to inner peripheral surface
End face；The end face at the 6th end 22 is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；It is described
The end face at the 7th end 41 is stepped, is less than close to the end face of excircle close to the end face of inner peripheral surface；8th end 42
End face is stepped, is higher than close to the end face of excircle close to the end face of inner peripheral surface.In said structure, at the 5th end 21 and
The junction at seven ends 41 is stepped, and the junction at the 6th end 22 and the 8th end 42 is stepped, and above-mentioned 5th end 21 is towards the
To be stepped, it is higher than close to the end face of inner peripheral surface close to the end face of excircle for the end face at seven ends 41, and the 7th end 41 is towards the
The end face at five ends 21 is also to be stepped, and the shape of its stairstepping and first end 12 is on the contrary, using the structure, both are in combination
Can effectively it position；Above-mentioned 6th end 22 is stepped towards the end face at the 8th end 42, it is less than close to the end face of excircle leans on
The end face of nearly inner peripheral surface, the end face at the 8th end 42 towards the 6th end 22 is also stepped, its stairstepping and first end 12
On the contrary, using the structure, both can effectively position shape in combination.Based on said structure, the first gear ring portion 2 and the second tooth
Circle portion 4 can realize precise positioning when combining, so that transition smooth-going of both junctions be effectively ensured, ensure the stabilization that the later stage uses
Property.
It is to be appreciated that the positioning of the first gear ring portion 2 and the second 4 two junctions in gear ring portion can also use other shapes
Formula, the holding tank such as to match in the one end in the first gear ring portion 2 setting lug boss, other end setting and lobe profile, second
The set-up mode in gear ring portion 4 is opposite with the first gear ring portion 2.
Specifically, the 5th end 21 is affixed by the 3rd locking device and the 7th end 41, and the 6th end 22 is logical
Cross the 4th locking device and the 8th end 42 is affixed；The quantity at least two of 3rd locking device, and spacing is set；
The quantity at least two of 4th locking device, and spacing is set.Said structure, the first gear ring portion 2 and the second gear ring portion 4
Connection after be fixed respectively by the 3rd locking device and the 4th locking device, the 3rd locking device is lock-screw,
Offer threaded hole on the outer circumference surface at the 5th end 21, lock-screw is resisted against the outer of the 7th end 41 by the 5th end 21 during locking
On periphery；4th locking device is also lock-screw, offers threaded hole on the outer circumference surface at the 8th end 42, and when locking locks
Tight screw is resisted against on the outer circumference surface at the 6th end 22 by the 8th end 42.The 3rd locking device and the 4th locking device exist at the same time
On the premise of ensureing use demand, the quantity of both needs to be determined according to specific use demand.Based on said structure,
The first gear ring portion 2 and the second gear ring portion 4 are fixed by lock-screw, so as to ensure that both form the stabilization of complete gear ring
Property, and then ensure requirement.
, can be with it is to be appreciated that the fixed form in the first gear ring portion 2 and the second gear ring portion 4 is not limited solely to this
Both are attached fixation by other fixed forms such as pin, is repeated no more in embodiment the application.
Except above-mentioned ring gear, the utility model also provides a kind of decelerating movable teeth device including the above-mentioned ring gear, should
Other Each parts of decelerating movable teeth device refer to the prior art, and details are not described herein.
The various embodiments described above are only the preferred embodiments of the utility model, in the art, every to be based on this reality
With the changes and improvements in new technique scheme, should not exclude outside the scope of protection of the utility model.
Claims (4)
1. a kind of ring gear of decelerating movable teeth device, includes the gear ring and flange of interconnection, it is characterised in that the flange with
The gear ring is mutually communicated, and is coaxially disposed with the gear ring；The flange includes first flange portion (1) and second flange portion
(3), the gear ring includes the first gear ring portion (2) and the second gear ring portion (4), the first flange portion (1) and first gear ring
Portion (2) is affixed, and the second flange portion (3) and the second gear ring portion (4) are affixed；
The first flange portion (1) and the second flange portion (3) cooperatively form complete flange；The first gear ring portion (2) and
The second gear ring portion (4) cooperatively forms complete gear ring；
The internal tooth curve of the first gear ring portion (2) and the internal tooth curve tandem array of the second gear ring portion (4) are formed and closed
Internal tooth curve.
2. ring gear according to claim 1, it is characterised in that the first flange portion (1) includes first end (12)
With second end (13), the second flange portion (3) includes the 3rd end (32) and the 4th end (33)；
It is connected by the first end (12) and the 3rd end (32)；And the second end (13) and the described 4th
(33) are held to be connected, the first flange portion (1) and the second flange portion (3) cooperatively form complete flange.
3. ring gear according to claim 1, it is characterised in that the first gear ring portion (2) includes the 5th end (21)
With the 6th end (22), the second gear ring portion (4) includes the 7th end (41) and the 8th end (42)；
Coordinated by the 5th end (21) and the 7th end (41)；And the 6th end (22) and the 8th end
(42) coordinate, the first gear ring portion (2) cooperatively forms complete gear ring with the second gear ring portion (4).
4. a kind of decelerating movable teeth device, it is characterised in that including such as claims 1 to 3 any one of them ring gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720569990.XU CN207333622U (en) | 2017-05-22 | 2017-05-22 | A kind of decelerating movable teeth device and its ring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720569990.XU CN207333622U (en) | 2017-05-22 | 2017-05-22 | A kind of decelerating movable teeth device and its ring gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333622U true CN207333622U (en) | 2018-05-08 |
Family
ID=62376422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720569990.XU Expired - Fee Related CN207333622U (en) | 2017-05-22 | 2017-05-22 | A kind of decelerating movable teeth device and its ring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333622U (en) |
-
2017
- 2017-05-22 CN CN201720569990.XU patent/CN207333622U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20190522 |