CN206446378U - A kind of single-stage rear driving axle and the vehicle with it - Google Patents
A kind of single-stage rear driving axle and the vehicle with it Download PDFInfo
- Publication number
- CN206446378U CN206446378U CN201720092268.1U CN201720092268U CN206446378U CN 206446378 U CN206446378 U CN 206446378U CN 201720092268 U CN201720092268 U CN 201720092268U CN 206446378 U CN206446378 U CN 206446378U
- Authority
- CN
- China
- Prior art keywords
- driving axle
- brake drum
- wheel hub
- stage rear
- leaf spring
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of single-stage rear driving axle and the vehicle with it.The single-stage rear driving axle includes：Brake drum；And wheel hub, it is connected with the brake drum, and one end being connected with the brake drum of the wheel hub is built in the brake drum, and the other end of the wheel hub is stretched out in outside the brake drum.Wheel hub in single-stage rear driving axle of the present utility model is connected with brake drum, and one end being connected with brake drum of wheel hub is built in brake drum, and the other end of wheel hub is stretched out in outside brake drum.It is simple to operate, be conducive to maintaining and maintaining cost is relatively low without dismantling wheel hub when changing brake drum, single-stage rear driving axle is better adapted to the market demand.
Description
Technical field
The utility model is related to technical field of vehicle, more particularly to a kind of single-stage rear driving axle and the vehicle with it.
Background technology
In the prior art, the model of middle heavy truck single-stage rear driving axle mainly has 153 drive axles (10 tonnes), 457 drivings
Bridge (13 tonnes), 485 drive axles (13 tonnes), BZ wheels bipolar bridge (16 tons) etc. when twin-stage bridge (16 tonnes) and STR are taken turns.It is existing
The major defect for having the single-stage rear driving axle in technology is itself weight, transmission efficiency is low and maintaining cost is high, increasingly
In response to the market demand, particularly China performs new standard GB 1589-2016 (title to discomfort：Automobile, trailer and truck combination
Contour dimension, axle load and quality limit value) after, the competition of single-stage rear driving axle of the prior art overcomes mistake.
With new standard GB1589-2016 execution, 10 tonnes of single-stage rear driving axles will be middle heavy truck main flow bridge.10 tons
Wheel hub and brake drum in level single-stage rear driving axle link together, and wheel hub is disposed entirely within the outside of brake drum.Changing
Need to dismantle lower hub during brake drum, complex operation is cumbersome, be unfavorable for maintaining and maintaining cost is higher, makes 10 tonnes
Single-stage rear driving axle can not increasingly meet the market requirement, therefore, release 10 tonnes of single-stage rear driving axles gesture of advanced technology
It must go.
Thus, it is desirable to have a kind of technical scheme come overcome or at least mitigate prior art drawbacks described above.
Utility model content
The purpose of this utility model is to provide a kind of single-stage rear driving axle to overcome or at least mitigate the upper of prior art
State defect.
To achieve the above object, the utility model provides a kind of single-stage rear driving axle, and the single-stage rear driving axle includes：System
Dynamic drum；And wheel hub, it is connected with the brake drum, and one end being connected with the brake drum of the wheel hub is built in institute
State in brake drum, the other end of the wheel hub is stretched out in outside the brake drum.
Preferably, the brake drum is removably connected with described one end of the wheel hub.
Preferably, the single-stage rear driving axle further comprises：Spindle nose, it runs through the wheel hub, and along parallel to described
The central axial direction extension of wheel hub；Hub bearing, it is by the hub support on the spindle nose；Semiaxis, it is arranged on institute
State in spindle nose, and lubrication gap is defined between the semiaxis and the spindle nose；Differential casing, one end of the semiaxis is stretched into
In to the differential carrier body；Driven gear, it is arranged on the differential casing, and the lubricating oil in the driven gear
The hub bearing can be flowed into by the lubrication gap, to lubricate the hub bearing.
Preferably, the gabarit diameter of the driven gear is arranged in the range of 438mm~440mm.
Preferably, the single-stage rear driving axle further comprises：Driving axle housing, it is connected with the spindle nose；And master subtracts
Fast device housing, it is connected with the driving axle housing, and is reserved with the bevel housing for differential lock between installation wheel
Mounting interface.
Preferably, the single-stage rear driving axle further comprises driving axle housing leaf spring, and the driving axle housing leaf spring is arranged on
On the driving axle housing, the cross sectional shape of the driving axle housing leaf spring 6 is hollow rectangular, the section of the driving axle housing leaf spring
Length is arranged in the range of 148mm~152mm, and the cross-sectional width of the driving axle housing leaf spring is arranged on 133mm~137mm's
In the range of, the section wall thickness of the driving axle housing leaf spring is arranged in the range of 11.2mm~12.8mm, and the driving axle housing
The material of leaf spring is Q460.
Preferably, the quantity of the driving axle housing leaf spring is two, the leaf spring between two driving axle housing leaf springs away from
It is arranged in the range of 942mm~1042mm.
Preferably, the quantity of the brake drum is two, and the brake drum end face between two brake drums is away from being arranged on
In the range of 1772mm~1852mm.
The utility model also provides a kind of vehicle, and the vehicle includes single-stage rear driving axle as described above.
Wheel hub in single-stage rear driving axle of the present utility model is connected with brake drum, and wheel hub is connected with brake drum
One end is built in brake drum, and the other end of wheel hub is stretched out in outside brake drum.When changing brake drum, without dismantling wheel hub,
It is simple to operate, be conducive to maintaining and maintaining cost is relatively low, single-stage rear driving axle is better adapted to market needs
Ask.
The utility model is primarily adapted for use in 10 tonnes of single-stage rear driving axles (440 drive axle).Wherein, in 440 drive axles
" 440 " refer to a diameter of 440mm of limit gabarit of driven gear.
Brief description of the drawings
Fig. 1 is the schematic diagram of the single-stage rear driving axle according to the embodiment of the utility model one.
Fig. 2 is the schematic elevational view of the single-stage rear driving axle shown in Fig. 1.
Fig. 3 is the schematic plan of the single-stage rear driving axle shown in Fig. 1.
Fig. 4 is the schematic right-side view of the single-stage rear driving axle shown in Fig. 1.
Fig. 5 is the schematic cross sectional views at the A in the single-stage rear driving axle shown in Fig. 1.
Fig. 6 is the schematic cross sectional views at the B in the single-stage rear driving axle shown in Fig. 1.
Fig. 7 is the schematic diagram of the driven gear in the single-stage rear driving axle shown in Fig. 6.
Reference：
| 1 | Brake drum | 14 | Driving axle housing |
| 2 | Wheel hub | 16 | End-tooth flange |
| 3 | Hub bearing | 17 | Drive axis |
| 6 | Driving axle housing leaf spring | 18 | Driven gear |
| 7 | Bevel housing | 19 | Axle shaft gear |
| 8 | Differential casing | X | Brake drum end face away from |
| 9 | Spindle nose | Y | Leaf spring away from |
| 10 | Semiaxis | Z | Master subtracts input distance |
| 11 | Lubrication gap | R | Master subtracts left offset |
| 12 | Vehicle centre-line | P | It is main subtract below-center offset away from |
| 13 | Input center line | L | Gabarit diameter |
Embodiment
In the accompanying drawings, same or similar element is represented or with same or like function using same or similar label
Element.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In description of the present utility model, term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are based on orientation shown in the drawings or position
Relation, is for only for ease of description the utility model and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model protection domain
Limitation.
Referring to Fig. 1 to Fig. 7, single-stage rear driving axle includes brake drum 1, wheel hub 2, spindle nose 9, hub bearing 3, semiaxis 10, poor
Fast device housing 8, driven gear 18, driving axle housing 14, bevel housing 7 and driving axle housing leaf spring 6.
Brake drum 1 is the fricting couple piece of brake, in addition to it should have as the strength and stiffness required for component, should also be had
As high as possible and stable coefficient of friction, and appropriate wearability, heat resistance, thermal diffusivity and thermal capacity etc..The base of brake drum 1
This shape is in drum type, including installation portion, installation portion is used to be connected with wheel hub 2, and is provided with installation portion centre bore.
Referring to Fig. 5, wheel hub 2 is connected with brake drum 1, and one end being connected with brake drum 1 (i.e. shown in Fig. 1 of wheel hub 2
The right-hand member of wheel hub 2) it is built in brake drum 1, the other end (left end of the wheel hub 2 i.e. shown in Fig. 1) of wheel hub 2 stretches out in brake drum
Outside 1.It is simple to operate, be conducive to maintaining and maintaining cost without dismantling wheel hub 2 when changing brake drum 1
It is relatively low, single-stage rear driving axle is better adapted to the market demand.
Brake drum 1 is removably connected with one end of wheel hub 2, mount and dismount it is simple and convenient and it is effectively save into
This.Specifically, the installation portion of brake drum 1 is shaped as circular plate-like shape, and the center of the installation portion of brake drum 1 is provided with for supplying
The centre bore that the left end of wheel hub 2 is passed.And the installation portion is parallel to one end of wheel hub 2, make between wheel hub 2 and brake drum 1
Good connecting effect.In a preferred embodiment, the right-hand member of the installation portion of brake drum 1 and wheel hub 2 is threaded togather.Can
With understanding, the reality that the installation portion of brake drum 1 is connected with the right-hand member of wheel hub 2 by buckle or other any dismountable modes
Example is applied in protection domain of the present utility model.
Referring to Fig. 1 to Fig. 3, the quantity of brake drum 1 is two, demand is matched according to vehicle, by between two brake drums 1
Brake drum end face is arranged in the range of 1772mm~1852mm away from X.For example, brake drum end face away from X could be arranged to 1772mm,
1812mm, 1852mm or other any numbers in the range of this, with more broad match different automobile types.
Referring to Fig. 5, spindle nose 9 extends upward through wheel hub 2 in the right and left shown in Fig. 5, and spindle nose 9 is along in parallel to wheel hub 2
Heart axis direction extends.Hub bearing 3 is arranged between wheel hub 2 and spindle nose 9, and wheel hub 2 is supported on spindle nose 9.Semiaxis 10
The interior of spindle nose 9 is arranged on, and semiaxis 10 and spindle nose 9 are coaxial, and lubrication gap 11 is defined between semiaxis 10 and spindle nose 9.
Referring to Fig. 6, one end (i.e. right-hand member) of semiaxis 10 is stretched in differential casing 8.The right-hand member of semiaxis 10 is specifically stretched into
It is connected to the axle shaft gear 19 being arranged in differential casing 8, and with axle shaft gear 19.Driven gear 18 is arranged on differential carrier
On body 8, and lubricating oil in driven gear 18 can flow into hub bearing 3 by lubrication gap 11, to be carried out to hub bearing 3
Oil lubrication, so as to realize the non-maintaining of hub bearing 3.Compared with hub bearing takes the mode of grease lubrication in the prior art, this
Hub bearing 3 in utility model is without time-based maintenance, so as to effectively reduce the maintaining cost of hub bearing 3.Need to refer to
Go out, the role of spindle nose 9, semiaxis 10, differential casing 8 and driven gear 18 in the utility model belong to ability
General knowledge well known to field technique personnel, and the utility model main points to be illustrated are not belonging to, therefore, just no longer explained in detail
State.
In the case where not reducing single-stage rear driving axle by property, the gabarit diameter L of driven gear 18 can be increased.Simultaneously
In terms of improving the material of driven gear 18, improving machining accuracy, reach the rated output torque of single-stage rear driving axle
More than 35000N.m, while making transmission efficiency be more than or equal to 96%.The raising of these performances makes single-stage rear-guard of the present utility model
Dynamic bridge can match high-powered engine, to improve economy, so as to meet modern logistics trend.
In the embodiment shown in fig. 7, the gabarit diameter L of driven gear 18 is arranged in the range of 438mm~440mm.
For example, the gabarit diameter L of driven gear 18 could be arranged to 438mm, 439mm, 440mm or other Arbitrary Digits in the range of this
Value.Compared with a diameter of 435mm of the gabarit of driven gear of the prior art, the gabarit of driven gear 18 of the present utility model is straight
Footpath L sets larger, can effectively improve drive axle output torque, while ensureing that the road clearance of drive axle is constant.
Referring to Fig. 1, Fig. 5 and Fig. 6, driving axle housing 14 is connected with spindle nose 9.Bevel housing 7 connects with driving axle housing 14
Connect, and mounting interface is reserved with bevel housing 7, mounting interface is for differential lock between installation wheel.Make the utility model
Single-stage rear driving axle can according to actual vehicle run road conditions the need for and carry out optionally install wheel between differential lock so that
The use scope of single-stage rear driving axle is widened, and then improves the combination property of the utility model single-stage rear driving axle and comprehensive competition
Power.
Specifically, the differential lock between vehicle turning or vehicle traveling need to install and taken turns in the skidding of smooth or muddy road surface
When, differential lock between wheel is attached to mounting interface., will be poor between wheel when vehicle is extricated oneself from a predicament without using differential lock between wheel
Speed lock is pulled down from mounting interface.It is pointed out that the structure of mounting interface can be set according to actual needs, as long as ensureing
Differential lock can be attached to mounting interface between wheel.By differential lock institute between driving axle housing 14, bevel housing 7 and wheel
Role belongs to general knowledge known in those skilled in the art, and is not belonging to the utility model main points to be illustrated, therefore,
Just no longer it is described in detail.
Referring to Fig. 1, driving axle housing leaf spring 6 is arranged on driving axle housing 14.The cross sectional shape of driving axle housing leaf spring 6 is hollow
Rectangle.In a preferred embodiment, the cross-sectional length of driving axle housing leaf spring 6 is arranged on 148mm~152mm scope
Interior, the cross-sectional width of driving axle housing leaf spring 6 is arranged in the range of 133mm~137mm, the section wall thickness of driving axle housing leaf spring 6
It is arranged in the range of 11.2mm~12.8mm.For example, the cross-sectional length of driving axle housing leaf spring 6 could be arranged to 148mm,
150mm, 152mm or other any numbers in the range of this.The cross-sectional width of driving axle housing leaf spring 6 could be arranged to 133mm,
135mm, 137mm or other any numbers in the range of this, the section wall thickness of driving axle housing leaf spring 6 could be arranged to
11.2mm, 12mm, 12.8mm or other any numbers in the range of this.In the present embodiment, the section of driving axle housing leaf spring 6
Preferably 150mm × 135mm × 12mm.Section with driving axle housing leaf spring of the prior art is 158mm × 160mm × 14mm
Compare, the section of the driving axle housing leaf spring 6 in the utility model is small and wall is thin, meets new standard GB1589-2016《Road vehicle
Contour dimension, axle load and quality limit value》Implement miniaturization and lightweight requirements of the market to single-stage rear driving axle, so that this reality
Market lightweight demand is more suitable for new single-stage rear driving axle.
Referring to Fig. 2, the quantity of driving axle housing leaf spring 6 is that the leaf spring between two, two driving axle housing leaf springs 6 is set away from Y
In the range of 942mm~1042mm.For example, leaf spring between two driving axle housing leaf springs 6 away from Y could be arranged to 942mm,
992mm, 1042mm or other any numbers in the range of this, so that single-stage rear driving axle of the present utility model can be more extensive
Match different automobile types.
In a preferred embodiment, the material of driving axle housing leaf spring 6 is Q460, and Q460 is a kind of low-alloy high-strength
Steel, Q460 is exactly that steel can be just plastically deformed when being reached 460 MPas by force intensity, that is, after external force is released, steel
The shape of stress can only be kept and original shape can not be replied.Compared with the material of driving axle housing leaf spring of the prior art is Q345B,
The intensity of driving axle housing leaf spring 6 of the present utility model is big and weight is relatively light.It is pointed out that the drive in the utility model
The role of dynamic axle housing leaf spring 6 belongs to general knowledge known in those skilled in the art, and is not belonging to the utility model to be explained
The main points stated, therefore, are just no longer described in detail.
Referring to Fig. 4, the main input that subtracts (refers to that the drive axis 17 of the vertical extension shown in Fig. 4 arrive end face apart from Z
The horizontal range of the left side largest end face of tooth flange 16) it is arranged in the range of 389mm~392mm.For example, it is main subtract input away from
389mm, 390mm, 392mm or other any numbers in the range of this are could be arranged to from Z.Subtract input with master of the prior art
End distance is compared for 400mm~443mm scope, and it is relatively short apart from Z that master of the present utility model subtracts input, is conducive to transmission
Axle is arranged, so as to be conducive to improving transmission efficiency.
Referring to Fig. 3, master subtracts left offset R and (refers to that the input center line 13 of the vertical extension shown in Fig. 3 arrives vehicle
The horizontal range of center line 12) it is arranged in the range of 30mm~36mm.For example, it is main subtract left offset R could be arranged to 30mm,
32mm, 34mm, 36mm or other any numbers in the range of this, the setting scope that master of the present utility model subtracts left offset R have
Beneficial to the arrangement of power line.
Referring to Fig. 4, the main below-center offset that subtracts (refers to that the horizontal-extending input center line 13 shown in Fig. 4 arrives level away from P
The vertical distance of the drive axis 17 of extension) it is arranged in the range of 34mm~36mm.For example, the main below-center offset that subtracts can be with away from P
It is set to 34mm, 35mm, 36mm or other any numbers in the range of this.Subtract due to main based on setting numerical value of the below-center offset away from P
By the mounting distance of gear, enable in the utility model main realizes optimum arrangement mode by gear.
Single-stage rear driving axle further comprises brake-shoe (not shown), and brake-shoe is the fricting couple piece of brake, except should have
Have outside as the strength and stiffness required for component, should also there is as high as possible and stable coefficient of friction, and suitably wear-resisting
Property, heat resistance, thermal diffusivity and thermal capacity etc..Brake-shoe is arranged on driving axle housing 14, and in brake drum 1.It is excellent at one
In the embodiment of choosing, brake-shoe is made in the way of rushing weldering.Compared with casting hoof of the prior art, braking of the present utility model
The light weight of hoof, oil consumption is small and operation cost is low, so as to be more suitable for market lightweight demand.
It is pointed out that brake is to produce to hinder vehicle movement or movement tendency brake force in brakes
Part.The specification of brake is φ 410mm × 220mm, dimensional tolerance ± 1mm, to meet the lightweight need of single-stage rear driving axle
Ask.It is pointed out that compared with the maximum functional air pressure of brake of the prior art is 0.8MPa, list of the present utility model
The service braking air pressure of brake in level rear driving axle brings up to 1.0Mpa.Brake force is improved, so as to increase rapid transit peace
Quan Xing, and then single-stage rear driving axle of the present utility model is more adapted to the demand in market.
The utility model also provides a kind of vehicle, and the vehicle includes single-stage rear driving axle as described above.
Wheel hub in single-stage rear driving axle of the present utility model is connected with brake drum, and wheel hub is connected with brake drum
One end is built in brake drum, and the other end of wheel hub is stretched out in outside brake drum.When changing brake drum, without dismantling wheel hub,
It is simple to operate, be conducive to maintaining and maintaining cost is relatively low, single-stage rear driving axle is better adapted to market needs
Ask.
From in summary, single-stage rear driving axle of the present utility model take advanced technology, advanced judgment criteria and
Advanced design method optimizes structure design, make single-stage rear driving axle of the present utility model have lightweight, braking moment it is big,
Rated moment is high, non-maintaining, transmission efficiency, reliability high and the low advantage of use cost, has the market competitiveness.
It is last it is to be noted that：Above example is only limited to illustrate the technical solution of the utility model, rather than to it
System.It will be understood by those within the art that：Technical scheme described in foregoing embodiments can be modified, or
Person carries out equivalent substitution to which part technical characteristic；These modifications are replaced, and take off the essence of appropriate technical solution
From the spirit and scope of each embodiment technical scheme of the utility model.
Claims (9)
1. a kind of single-stage rear driving axle, it is characterised in that including：
Brake drum (1)；And
Wheel hub (2), it is connected with the brake drum (1), and one end being connected with the brake drum (1) of the wheel hub (2)
It is built in the brake drum (1), the other end of the wheel hub (2) is stretched out in outside the brake drum (1).
2. single-stage rear driving axle as claimed in claim 1, it is characterised in that the brake drum (1) and the wheel hub (2) are with can
The mode of dismounting is connected.
3. single-stage rear driving axle as claimed in claim 1 or 2, it is characterised in that further comprise：
Spindle nose (9), it runs through the wheel hub (2), and extends along the central axial direction parallel to the wheel hub (2)；
Hub bearing (3), the wheel hub (2) is supported on the spindle nose (9) by it；
Semiaxis (10), it is arranged in the spindle nose (9), and defines lubrication between the semiaxis (10) and the spindle nose (9)
Gap (11)；
Differential casing (8), one end of the semiaxis (10) is stretched in the differential casing (8)；
Driven gear (18), it is arranged on the differential casing (8), and the lubricating oil in the driven gear (18) can
The hub bearing (3) is flowed into by the lubrication gap (11), to lubricate the hub bearing (3).
4. single-stage rear driving axle as claimed in claim 3, it is characterised in that the gabarit diameter (L) of the driven gear (18)
It is arranged in the range of 438mm~440mm.
5. single-stage rear driving axle as claimed in claim 3, it is characterised in that further comprise：
Driving axle housing (14), it is connected with the spindle nose (9)；And
Bevel housing (7), it is connected with the driving axle housing (14), and is reserved with the bevel housing (7)
Mounting interface for differential lock between installation wheel.
6. single-stage rear driving axle as claimed in claim 5, it is characterised in that further comprise driving axle housing leaf spring (6), described
Driving axle housing leaf spring (6) is arranged on the driving axle housing (14), and the cross sectional shape of the driving axle housing leaf spring (6) is hollow length
Square, the cross-sectional length of the driving axle housing leaf spring (6) is arranged in the range of 148mm~152mm, the driving axle housing leaf spring
(6) cross-sectional width is arranged in the range of 133mm~137mm, and the section wall thickness of the driving axle housing leaf spring (6) is arranged on
In the range of 11.2mm~12.8mm, and the material of the driving axle housing leaf spring (6) is Q460.
7. single-stage rear driving axle as claimed in claim 6, it is characterised in that the quantity of the driving axle housing leaf spring (6) is two
Individual, the leaf spring between two driving axle housing leaf springs (6) is arranged in the range of 942mm~1042mm away from (Y).
8. single-stage rear driving axle as claimed in claim 1, it is characterised in that the quantity of the brake drum (1) is two, two
Brake drum end face between the brake drum (1) is arranged in the range of 1772mm~1852mm away from (X).
9. a kind of vehicle, it is characterised in that including the single-stage rear driving axle as any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092268.1U CN206446378U (en) | 2017-01-22 | 2017-01-22 | A kind of single-stage rear driving axle and the vehicle with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092268.1U CN206446378U (en) | 2017-01-22 | 2017-01-22 | A kind of single-stage rear driving axle and the vehicle with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206446378U true CN206446378U (en) | 2017-08-29 |
Family
ID=59668227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720092268.1U Expired - Fee Related CN206446378U (en) | 2017-01-22 | 2017-01-22 | A kind of single-stage rear driving axle and the vehicle with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206446378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108116162A (en) * | 2017-12-20 | 2018-06-05 | 北京福田戴姆勒汽车有限公司 | A kind of 485 driving axis and its manufacturing method |
-
2017
- 2017-01-22 CN CN201720092268.1U patent/CN206446378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108116162A (en) * | 2017-12-20 | 2018-06-05 | 北京福田戴姆勒汽车有限公司 | A kind of 485 driving axis and its manufacturing method |
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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 |
Granted publication date: 20170829 Termination date: 20210122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |