CN205534150U - Gear change mechanism - Google Patents
Gear change mechanism Download PDFInfo
- Publication number
- CN205534150U CN205534150U CN201620316814.0U CN201620316814U CN205534150U CN 205534150 U CN205534150 U CN 205534150U CN 201620316814 U CN201620316814 U CN 201620316814U CN 205534150 U CN205534150 U CN 205534150U
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- China
- Prior art keywords
- cam
- plural number
- gear
- speed change
- external gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a gear change mechanism. This gear change mechanism includes: an outer loop part, it is inside including an at least external gear, a mandrel, with this at least external gear coaxially the pivot locate this outer loop parts, have a central axis and its periphery and be equipped with plural cam joint portion, plural number cam part, detachably cup joints in this plural number cam joint portion respectively, rotate with this mandrel is synchronous, this plural number cam part at least wherein the two has the nonvanishing angle phase difference of a numerical value, the plural number internal gear, for the rigidity material, the cover is located this plural number cam part and is not rotated along with this plural number cam part respectively, respectively with this at least external gear part meshing.
Description
Technical field
This utility model relates to mechanical equipment technical field, particularly a kind of speed change gear.
Background technology
The acceleration or deceleration of general speed change gear controllable one mechanism, mainly realizes accelerating by gear ratio
Or slow down, but the volume realizing relatively big retarding or speed-up ratio then speed change gear will increase relatively, and do not meet
Actual use demand, so under a designated volume and have the speed change gear of relatively big retarding or speed-up ratio
In response to and give birth to.
But, in a kind of known speed change gear, plural number cam part is directly fixed in mandrel, as wherein
One cam fault maybe needs then to need this plural number cam part and mandrel during the quantity adjusting this plural number cam part
Change in the lump, and for face contact, there is bigger friction between internal-external gear, also affect the transmission of power, separately
There is between cam part and the internal gear of this type of known speed change gear gap, and its internal gear the most all has
Pliability, therefore between cam part and internal gear, internal gear and the external gear of this type of known speed change gear
Start, can be because the conversion efficiency of internal gear rigidity deficiency or mechanism and power without assisting start is the best and degree of accuracy
, there is the scarce fraud urgently improved in deficiency.
Therefore, it is necessary to provide a kind of novelty and there is the speed change gear of progressive, to solve above-mentioned problem.
Utility model content
The purpose of this utility model is to provide a kind of speed change gear, can improve the conversion efficiency of power, start accurate
Degree and degree of stability, and easy accessibility is quick and demand can be coordinated to adjust internal mechanism.
For achieving the above object, this utility model takes techniques below scheme:
This utility model provides a kind of speed change gear, including: an outer ring member, inside includes at least one external tooth
Wheel；One mandrel, is hubbed at this outer ring member coaxially with this at least one external gear, have a central axis and
Its periphery is provided with plural number cam joint portion；Plural number cam part, is the most removably socketed on this plural number cam
Joint portion, and this mandrel synchronous axial system, this plural number cam part the two has a numerical value and is not at least within
The angular phase of zero is poor；Plural number internal gear, for rigid, is sheathed on this plural number cam part and not respectively
Rotate with this plural number cam part, engage with this at least one outer gear portion respectively.
Described each cam joint portion includes at least one axial incisal plane, described each cam part have one run through and
Shape is corresponding to the trepanning of the profile of this cam joint portion.
Described each cam part includes a cam member being socketed on wherein cam joint portion described in one and a set of group
In the interior Bearing of this cam member, each described inner gear housing group Bearing in wherein described in.
Described each cam member is all positive round and mutually closely connected socket with the profile of corresponding interior Bearing.
Described mandrel is provided with an axial incisal plane, and described each cam part has a trepanning run through, respectively this set
The hole wall in hole is provided with the axial abutment plane in a described axial incisal plane of abutting, and this axial abutment plane is at least
Wherein the two to have the angular phase that a numerical value is not zero poor.
Described speed change gear separately includes plural number auxiliary cam parts, and respectively these auxiliary cam parts include that one is pivoted
In the shaft member of described outer ring member, the most dynamic the auxiliary cam part being socketed on described shaft member and a set of group in this
The auxiliary Bearing of auxiliary cam part, wherein said each internal gear has and a set of is located therein cam part described in
Centre bore and plural number be located at the perforation around this centre bore, these plural number auxiliary cam parts are arranged in multiple respectively
The described perforation of number, respectively this perforation set group is in wherein assisting Bearing described in one, relative to answering of same internal gear
The working curved surface of number auxiliary cam parts and cam part have identical towards.
Described speed change gear separately includes that plural number is fixed in the pillar of described outer ring member, wherein said each internal tooth
Wheel separately provides the arc guide groove that plural number is located at around described centre bore, and respectively this arc guide groove is sheathed on wherein described in one
Pillar and there is therebetween ring clearance.
The teeth portion of described external gear and described internal gear one at least within is many circle-arc teeth, these many circle-arc teeth
By a plurality of be connected continuously and there is the circular arc of different radius of curvature constituted, this external gear and this internal gear phase
Each teeth portion of engagement is all slip tangential contact.
Described each external gear is equipped with plural number perforation, and respectively the outer peripheral face of this external gear the most radially cuts open and is provided with plural number
Narrow groove, described each perforation connects with wherein narrow groove described in, described plural number internal gear and described outer portion
It is formed with a gap between part, between this outer ring member and described plural number cam part, is additionally provided with greasing substance.
Described each cam joint portion includes four axial incisal planes, this four axial incisal plane the most diametrically, institute
State each cam part to have one and run through and shape is corresponding to the trepanning of profile of this cam joint portion；Respectively this cam
Parts include that a cam member being socketed on wherein this cam joint portion and a set of group are in the interior training of this cam member
Woods, described each inner gear housing group Bearing in wherein described in；Outside respectively this cam member is with corresponding interior Bearing
Shape is all positive round and mutually closely connected socket；The teeth portion of described external gear and this internal gear one at least within is many
Circle-arc tooth, these many circle-arc teeth by a plurality of be connected continuously and there is the circular arc of different radius of curvature constituted, this
Each teeth portion that external gear is meshed with this internal gear is all slip tangential contact；Respectively this cam member has one and runs through
Trepanning, respectively the hole wall of this trepanning is closely connected is socketed on corresponding cam joint portion, and respectively the hole wall of this trepanning is provided with
Four axial abutment plane, this four axial abutment plane abuts this four axial incisal plane；This plural number cam member isogonism
Described mandrel it is socketed on away from ground；Described outer ring member separately includes two housings, two pedestals and two pedestal Bearings, respectively
This external gear is equipped with plural number perforation, and plural number pin member is arranged in the described perforation of part and is inserted in described two shells
Body, plural number fastener is arranged in this two housing and this perforation of part, and this at least one external gear is located in this two shell
Between body, described two pedestal Bearings are sheathed on described two pedestals respectively and are positioned at the both sides of this plural number internal gear,
This two pedestals Bearing is connected between this two housing and this at least one external gear respectively, and this mandrel is fed through this extremely
A few external gear, this two pedestal and this two pedestals Bearing, described plural number pillar is removably solid with this two pedestal
Connect；Between this mandrel and respectively this pedestal, each this pedestal and respectively between this housing and another between this two housing
It is respectively equipped with a seal ring；Respectively the outer peripheral face of this external gear radially cuts open and is provided with plural narrow groove, respectively this perforation
Connect with wherein narrow groove described in；It is formed with a gap between this plural number internal gear and respectively this pedestal；This is outer
It is additionally provided with greasing substance between ring component and this plural number cam part.
The beneficial effects of the utility model are: plural number internal gear start simultaneously of the present utility model is also aided with this again
Number auxiliary cam parts, improve the accurate of this speed change gear and stability, also improve making of this speed change gear
Use the life-span.This speed change gear has splendid kinetic energy efficiency and dismounting and adjustment parts are simple and quick.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of this utility model first embodiment.
Fig. 2 is the perspective view of this utility model first embodiment.
Fig. 3 is the exploded view of this utility model first embodiment.
Fig. 4 is the generalized section of this utility model first embodiment.
Fig. 5 and Fig. 6 is many circle-arc teeth enlarged diagram of this utility model first embodiment.
Fig. 7 is the generalized section of this utility model first embodiment.
Fig. 8 is the generalized section of this utility model the second embodiment.
Fig. 9 and Figure 10 is the cam member schematic diagram of this utility model the 3rd embodiment.
Drawing reference numeral: 1,1a: speed change gear；2: outer ring member；21,21a: external gear；22: pass through
Hole；23: narrow groove；24: housing；25: pedestal；26: pedestal Bearing；27: pin member；28: fasten
Part；29a, 29b, 29c: seal ring；3,3a: mandrel；30: central axis；31: cam joint portion；
32: axially incisal plane；4: auxiliary cam parts；41: shaft member；42: auxiliary cam part；43: auxiliary
Bearing；5: cam part；52,52c, 52d: cam member；53,53c, 53d: trepanning；54: axle
To abutment plane；55: interior Bearing；6,6a: internal gear；61: centre bore；62: perforation；63: arc
Guide groove；64: many circle-arc teeth；65: gap；7: pillar；71: ring clearance.
Detailed description of the invention
Hereinafter only with embodiment, the enforcement aspect that this utility model is possible is described, so and be not used to limit this practicality
The novel category to be protected, conjunction is first chatted bright.
Refer to Fig. 1 to 7, it shows first embodiment of the present utility model, and speed change of the present utility model fills
Put 1 and include outer ring member 2, mandrel 3, plural number cam part 5 and plural number internal gear 6.
The inside of this outer ring member 2 includes at least one external gear 21.This mandrel 3 and this at least one external gear
21 are hubbed at this outer ring member 2 coaxially, and this mandrel 3 has a central axis 30 and its periphery is provided with multiple
Number cam joint portion 31.This plural number cam part 5 is the most removably socketed on this plural number cam joint portion
31, and with this mandrel 3 synchronous axial system, this plural number cam part 5 at least within the two there is a numerical value not
Be zero angular phase poor.This plural number internal gear 6 for rigid and is sheathed on this plural number cam part respectively
5 and do not rotate with this plural number cam part 5, this plural number internal gear 6 respectively with this at least one external gear 21
Part engagement.Thereby, respectively this cam part 5 of this speed change gear 1 is for being detachably secured to this mandrel 3
On, therefore can be individually replaced respectively this cam part 5, can be assembled into according to demand different angles configuration and can
Cost-effective.Further, this plural number internal gear 6 synchronously carries out circular swing, and drive simultaneously this at least one
External gear 21 with alleviate respectively this plural number internal gear 6 load and improve this speed change gear 1 conversion efficiency,
Degree of accuracy and degree of stability.
In the present embodiment, this speed change gear 1 separately includes that plural number auxiliary cam parts 4 and plural number are fixed in this
The pillar 7 of outer ring member 2.This pillar 7 can improve overall steadiness and the structural strength of this speed change gear 1.
Respectively these auxiliary cam parts 4 include a shaft member 41 being hubbed at this outer ring member 2, the most dynamic are socketed on this
The auxiliary cam part 42 of shaft member 41 and a set of group are in the auxiliary Bearing 43 of this auxiliary cam part 42, respectively
This internal gear 6 has a set of centre bore 61 being located therein this cam part 5 and plural number is located at this center
Perforation 62 around hole 61, these plural number auxiliary cam parts 4 are arranged in this plurality of through holes 62 respectively, respectively should
62 set groups of boring a hole are in wherein one this auxiliary Bearing 43, relative to the plural auxiliary cam of same internal gear 6
Parts 4 and the working curved surface of cam part 5 have identical towards, respectively these auxiliary cam parts 4 can help
Stablize this external gear 21 start and can the transmission of lifting force.Respectively this internal gear 6 has separately provided plural number and has been located at
Arc guide groove 63 around this centre bore 61, respectively this arc guide groove 63 is sheathed on wherein this pillar 7 and the two it
Between there is ring clearance 71 for making this internal gear 6 start smooth and easy.
In the present embodiment, respectively this cam joint portion 31 includes that four (at least one) axially cuts flat with
Face 32, this four axial incisal plane 32 the most diametrically, respectively this cam part 5 preferably have one run through and
Shape is corresponding to the trepanning 53 of the profile of this cam joint portion 31.Respectively this cam part 5 includes that one is socketed on
Wherein the cam member 52 of this cam joint portion 31 and a set of group are in the interior Bearing 55 of this cam member 52, respectively
This internal gear 6 set group is in wherein one this interior Bearing 55.Outside respectively this cam member 52 is with corresponding interior Bearing 55
Shape is all positive round and mutually closely connected socket makes that power can be complete is directly passed and strengthens structural strength and make this cam
Part 52 and this interior Bearing 55 are hardly damaged.This external gear 21 and this internal gear 6 one at least within
Teeth portion is that both many circle-arc teeth 64, preferably this external gear 21 and this internal gear 6 are all many circle-arc teeth 64,
These many circle-arc teeth 64 by a plurality of be connected continuously and there is the circular arc of different radius of curvature constituted, so this
Each teeth portion that external gear 21 is meshed with this internal gear 6 is all slip tangential contact, thereby can reduce friction.
Respectively this cam member 52 has a trepanning 53 run through, respectively the hole wall of this trepanning 53 closely connected be socketed on the most convex
Wheel joint portion 31, respectively the hole wall of this trepanning 53 is provided with four axial abutment plane 54, this four axial abutment plane
54 these four axial incisal planes 32 of abutting are so that this mandrel 3 can drive this cam member 52 to rotate, and this plural number is convex
Gear member 52 angular distance such as grade ground (but not limiting) be socketed on this mandrel 3 so that such internal gear 6 can be average force
Difference angles in this external gear 21.
In the present embodiment, this outer ring member 2 separately includes two housing 24, two pedestal 25 and two pedestal Bearings
26, respectively this external gear 21 is equipped with plural number perforation 22, and plural number pin member 27 is arranged in the such perforation of part 22
And it is inserted in this two housing 24, plural number fastener 28 is arranged in this two housing 24 and the such perforation of part 22,
This two external gear 21 is located between this two housing 24, and this two pedestals Bearing 26 is sheathed on this diyl respectively
Seat 25 and be positioned at the both sides of this plural number internal gear 6, this two pedestals Bearing 26 is connected to this two housing 24 respectively
And between this two external gear 21, this mandrel 3 is fed through this two external gear 21, this two pedestal 25 and this diyl
Seat Bearing 26, this plural number pillar 7 is removably affixed with this two pedestal 25 so that dismounting, thereby, is somebody's turn to do
The internal structure positioning this speed change gear 1 that two pedestals 25 can consolidate.
In the present embodiment, this mandrel 3 and respectively between this pedestal 25, respectively this pedestal 25 and respectively this housing 24
Between and this two housing 24 between be separately respectively equipped with seal ring 29a, 29b, a 29c.Respectively this external gear
The outer peripheral face of 21 radially cuts open and is provided with plural narrow groove 23, respectively this perforation 22 and wherein this narrow groove 23
Connection.A gap 65 it is formed with to reduce friction between this plural number internal gear 6 and respectively this pedestal 25.Preferably
Ground, is additionally provided with greasing substance and circulates in this speed change dress between this outer ring member 2 and this plural number cam part 5
Put within 1 to reduce the friction between each spare part.Such seal ring can completely cut off the inside of this speed change gear 1
With outside to prevent this greasing substance from spilling or foreign body entrance.
On using, this mandrel 3 rotates and drives this cam part 5 to rotate so that this internal gear 6 is with around ring
The mode start swung is in this external gear 21, and thereby this speed change gear 1 is not required to extra gear and i.e. has bigger
Speed reducing ratio, and the volume of this speed change gear 1 can be controlled in less scope to meet demand.As made this outer
Gear 21 rotates to drive this internal gear 6 carry out circular swing and exported by this mandrel 3, then can be had
There is bigger speed-up ratio.
Refer to second embodiment of Fig. 8, this speed change gear 1a can by change different length mandrel 3a,
The axial width of the quantity of internal gear 6a and this external gear 21a (the most visual demand and
Adjust the quantity of this external gear) and more preferable average such internal gear 6a and the load of this external gear 21a.
Refer to the 3rd embodiment of Fig. 9 and Figure 10, the trepanning 53c of this cam member 52c and this cam member
The trepanning 53d of 52d is alternatively different radially length direction and the configuration of position, but can make internal gear on using
Start is stablized with external gear.
In other embodiments, respectively the cam joint portion of this mandrel includes plural number axially incisal plane, respectively this cam
Parts have a trepanning run through, and respectively the hole wall of this trepanning is provided with an axial abutment plane, such axial abutting
Plane (cam member as shown in FIG. 9 and 10) is connected to different axial incisal plane；Again or this speed change
The mandrel of device is provided with an axial incisal plane, respectively this cam part has a trepanning run through, respectively this trepanning
Hole wall is provided with the axial abutment plane in this axial incisal plane of an abutting, and such axial abutment plane is at least within
It is poor that the two has the angular phase that a numerical value is not zero；But the cam part making this speed change gear is dismountable solid
Due to this mandrel.
In other embodiments, each shaft member waiting auxiliary cam parts also can extend over this pedestal and by set
The mode being connected to a few driven gear engages with other driving gears；The mandrel of this speed change gear and cam part
Between can be mutually closely connected socket also without.
In sum, the start simultaneously of this plural number internal gear is also aided with this plural number auxiliary cam parts, improves this change
Accurate and the stability of speed variator, also improves the service life of this speed change gear.This speed change gear has pole
Good kinetic energy efficiency and dismounting and to adjust parts simple and quick.
Claims (10)
1. a speed change gear, it is characterised in that it includes:
One outer ring member, inside includes at least one external gear；
One mandrel, is hubbed at this outer ring member coaxially with this at least one external gear, have a central axis and
Its periphery is provided with plural number cam joint portion；
Plural number cam part, is the most removably socketed on this plural number cam joint portion, Tong Bu with this mandrel turn
Dynamic, this plural number cam part at least within both to have the angular phase that a numerical value is not zero poor；
Plural number internal gear, for rigid, is sheathed on this plural number cam part and respectively not with this plural number cam
Parts rotate, and engage with this at least one outer gear portion respectively.
2. speed change gear as claimed in claim 1, it is characterised in that described each cam joint portion includes
At least one axial incisal plane, described each cam part has one to be run through and shape is corresponding to this cam joint portion
The trepanning of profile.
3. speed change gear as claimed in claim 1, it is characterised in that described each cam part includes
It is socketed on the cam member of wherein cam joint portion described in one and a set of group in the interior Bearing of this cam member, each described
Inner gear housing group Bearing in wherein described in.
4. speed change gear as claimed in claim 3, it is characterised in that described each cam member is with corresponding
The profile of interior Bearing is all positive round and mutually closely connected socket.
5. speed change gear as claimed in claim 1, it is characterised in that described mandrel is provided with and axially cuts
Plane, described each cam part has a trepanning run through, and respectively the hole wall of this trepanning is provided with a described axle of abutting
To the axial abutment plane in incisal plane, this axial abutment plane the two has a numerical value and is not zero at least within
Angular phase poor.
6. speed change gear as claimed in claim 1, it is characterised in that separately include plural number auxiliary cam portion
Part, respectively these auxiliary cam parts include a shaft member being hubbed at described outer ring member, the most dynamic are socketed on institute
State the auxiliary cam part of shaft member and a set of group in the auxiliary Bearing of this auxiliary cam part, wherein said each internal gear
There is a set of centre bore being located therein cam part described in one and plural number be located at the perforation around this centre bore,
These plural number auxiliary cam parts are arranged in plural described perforation respectively, respectively this perforation set group in wherein described in one auxiliary
Help Bearing, have with the working curved surface of cam part relative to the plural auxiliary cam parts of same internal gear
Identical towards.
7. speed change gear as claimed in claim 6, it is characterised in that separately include that plural number is fixed in described
The pillar of outer ring member, wherein said each internal gear separately provides the arc that plural number is located at around described centre bore and leads
Groove, respectively this arc guide groove is sheathed on wherein pillar described in one and there is therebetween ring clearance.
8. speed change gear as claimed in claim 1, it is characterised in that described external gear and described internal tooth
The teeth portion of wheel one at least within is many circle-arc teeth, and these many circle-arc teeth are connected continuously by a plurality of and had phase
The circular arc of different radius of curvature is constituted, and each teeth portion that this external gear is meshed with this internal gear is all slip tangent line
Contact.
9. speed change gear as claimed in claim 1, it is characterised in that described each external gear is equipped with multiple
Sequence hole, respectively the outer peripheral face of this external gear the most radially cuts open and is provided with plural narrow groove, described each perforation with wherein
Narrow groove connection described in one, is formed with a gap between described plural number internal gear and described outer ring member, and this is outer
It is additionally provided with greasing substance between ring component and described plural number cam part.
10. speed change gear as claimed in claim 7, it is characterised in that described each cam joint portion includes
Four axial incisal planes, this four axial incisal plane the most diametrically, described each cam part have one run through and
Shape is corresponding to the trepanning of the profile of this cam joint portion；Respectively this cam part include one be socketed on wherein one should
The cam member of cam joint portion and a set of group are in the interior Bearing of this cam member, and described each inner gear housing group is in wherein
Bearing in described in one；Respectively this cam member is all positive round and mutually closely connected socket with the profile of corresponding interior Bearing；Institute
The teeth portion stating external gear and this internal gear one at least within is many circle-arc teeth, and these many circle-arc teeth are by a plurality of
Being connected continuously and have the circular arc of different radius of curvature and constituted, this external gear is each with what this internal gear was meshed
Teeth portion is all slip tangential contact；Respectively this cam member has a trepanning run through, and respectively the hole wall of this trepanning is closely connected
Being socketed on corresponding cam joint portion, respectively the hole wall of this trepanning is provided with four axial abutment plane, and this four axially supports
Connect plane and abut this four axial incisal plane；It is socketed on described mandrel the angular distances such as this plural number cam member；Outside described
Ring component separately includes two housings, two pedestals and two pedestal Bearings, and respectively this external gear is equipped with plural number perforation, multiple
Number pin member is arranged in the described perforation of part and is inserted in described two housings, and plural number fastener is arranged in this two housing
And this perforation of part, this at least one external gear is located between this two housing, and described two pedestal Bearings overlap respectively
Being located at described two pedestals and be positioned at the both sides of this plural number internal gear, this two pedestals Bearing is connected to this two shell respectively
Between body and this at least one external gear, this mandrel is fed through this at least one external gear, this two pedestal and this diyl
Seat Bearing, described plural number pillar is removably affixed with this two pedestal；Between this mandrel and respectively this pedestal, respectively
A seal ring separately it is respectively equipped with between this pedestal and respectively this housing and between this two housing；Respectively this external gear
Outer peripheral face radially cut open and be provided with plural narrow groove, respectively this perforation connects with wherein narrow groove described in；This is multiple
It is formed with a gap between number internal gear and respectively this pedestal；Between this outer ring member and this plural number cam part separately
It is provided with greasing substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620316814.0U CN205534150U (en) | 2016-04-15 | 2016-04-15 | Gear change mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620316814.0U CN205534150U (en) | 2016-04-15 | 2016-04-15 | Gear change mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205534150U true CN205534150U (en) | 2016-08-31 |
Family
ID=56792249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620316814.0U Withdrawn - After Issue CN205534150U (en) | 2016-04-15 | 2016-04-15 | Gear change mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205534150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177933A1 (en) * | 2016-04-15 | 2017-10-19 | 刘德恩 | Speed changing device |
-
2016
- 2016-04-15 CN CN201620316814.0U patent/CN205534150U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177933A1 (en) * | 2016-04-15 | 2017-10-19 | 刘德恩 | Speed changing device |
| CN107299983A (en) * | 2016-04-15 | 2017-10-27 | 泰锋精密科技股份有限公司 | Speed change gear |
| CN107299983B (en) * | 2016-04-15 | 2019-05-14 | 泰锋精密科技股份有限公司 | Speed change gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20190514 |
|
| AV01 | Patent right actively abandoned |