CN109572798A - The axial-adjustment unit of electronic four-way adjustable steering pipe column - Google Patents
The axial-adjustment unit of electronic four-way adjustable steering pipe column Download PDFInfo
- Publication number
- CN109572798A CN109572798A CN201811553994.4A CN201811553994A CN109572798A CN 109572798 A CN109572798 A CN 109572798A CN 201811553994 A CN201811553994 A CN 201811553994A CN 109572798 A CN109572798 A CN 109572798A
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- China
- Prior art keywords
- worm screw
- locating part
- axial
- electronic
- adjustment unit
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/181—Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention discloses a kind of axial-adjustment units of electronic four-way adjustable steering pipe column, including telescope motor, the worm screw being connect with telescope motor, the first locating part for applying load to the worm screw and between the first locating part and worm screw and the force transmission element that can be circumferentially rotated with worm screw, force transmission element and the first locating part and worm screw are point contact.The axial-adjustment unit of the electronic four-way adjustable steering pipe column of the present invention, it is matched by setting force transmission element with locating part, eliminate axial gap existing for telescope motor, telescope motor and worm screw are not in axial float during operation, it effectively avoids that steering column height adjustment is caused to fail because of motor clamping stagnation, reliability is improved, the comfortableness and security of driving are also improved.
Description
Technical field
The invention belongs to wheel steering system technical fields, specifically, the present invention relates to a kind of electronic four-ways to turn
To the axial-adjustment unit of tubing string.
Background technique
Steering system is a series of devices for changing or keeping vehicle driving or reverse direction, wherein steering column
It is one of significant components of automobile steering system for connecting steering wheel and diverter.In Vehicle Engineering, steering column
Can make the position of steering wheel in a certain range up and down, front and back adjusts to adapt to the operating habit of driver.
When need to by steering wheel to driver step down or adjustment direction disk suitable position when, electronic four-way adjustable steering pipe column
It is to realize to adjust by regulating switch.When as needed adjust steering column, press manually adjust switch can manual actuation turn
Required location status is adjusted to tubing string four-way；Automatic regulating switch is pressed, steering column can be automatically adjusted to preset condition
(can preset three kinds of location status).
Therefore, in order to realize steering wheel upper and lower and front-rear position adjusting, be easy to implement the tune of steering wheel spatial position
Section, so that driver easily converts different spatial positions, existing electronic four-way adjustable steering pipe column according to different demands
Mainly include upper tubing string assembly, lower tubular column assembly, be rotatably arranged in tubing string assembly and for being connect with steering wheel
First steering shaft, the third steering shaft of the second steering shaft that axis connection is turned to first and the second steering axis connection and upper tubing string
The flexible pipe assembly of assembly rotation connection connect with flexible pipe assembly and upper tubing string assembly and is used to control upper tubing string assembly and the
The angle adjustment device and connect with lower tubular column assembly and flexible pipe assembly and be used to control flexible that one steering shaft is swung
The axial-adjustment unit that pipe assembly and the first steering shaft move along the axial direction, the second steering shaft are flexible to be rotatably arranged on
In pipe assembly and the second steering shaft can with flexible pipe assembly synchronize be axially moveable.
The axial-adjustment unit of electronic four-way adjustable steering pipe column, should for realizing the adjusting of steering wheel up and down direction position
Axial-adjustment unit mainly includes being rotatably arranged on being adjusted axially screw rod, being set to flexible pipe assembly on lower tubular column assembly
It is upper be adjusted axially screw rod and constitute the nut of worm drive, make to be adjusted axially the flexible electricity of the driving force that screw rod rotates for providing
Machine and with telescope motor and be adjusted axially the turbine and worm decelerator that screw rod connect.It is adjusted axially screw rod and nut matches
It closes, constitutes worm drive, when angular adjustment screw rod rotates, nut can be made to do linear reciprocating motion, nut drives telescoping tube
Assembly, which synchronizes, does crankmotion, realizes the adjusting of steering wheel up and down direction position.Because axially there is gap in telescope motor,
There is axial float in telescope motor, the worm gear that will lead to deceleration mechanism can not be engaged normally with worm screw during operation, cause
Worm gear, worm screw excessive wear, and transmission is unstable, and then influences whether the adjusting of steering wheel height and position, simultaneous retractable motor
Place can also generate obvious abnormal sound, influence driver comfort.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of electricity
The axial-adjustment unit of dynamic four-way adjustable steering pipe column, it is therefore an objective to improve the reliability of electronic four-way adjustable steering pipe column.
To achieve the goals above, the technical scheme adopted by the invention is as follows: the axial of electronic four-way adjustable steering pipe column is adjusted
Regulating device, including telescope motor, the worm screw being connect with telescope motor, for the worm screw apply load the first locating part with
And between the first locating part and worm screw and the force transmission element that can be circumferentially rotated with worm screw, force transmission element and the first locating part and
Worm screw is point contact.
The force transmission element is spheroidal structure, and force transmission element and the worm screw are coaxial arrangement.
One end of the worm screw is contacted with the force transmission element and the end end face of worm screw is spherical surface, the other end of worm screw and institute
State telescope motor connection.
The axial-adjustment unit of the electronic four-way adjustable steering pipe column further includes being set on the lower tubular column assembly
Outer housing, the force transmission element and first locating part are located at the inside of outer housing and the first locating part and outer housing are screw thread
Connection.
The axial-adjustment unit of the electronic four-way adjustable steering pipe column further includes the inside for being set to the outer housing
And it is sheathed on the axle sleeve on the worm screw.
The axial-adjustment unit of the electronic four-way adjustable steering pipe column further include for first locating part into
Row axial limiting is so that the first locating part and the outer housing keep relatively-stationary second locating part, the second locating part and shell
Body is to be threadedly coupled.
The axial-adjustment unit of the electronic four-way adjustable steering pipe column of the present invention, is matched by setting force transmission element and locating part
It closes, eliminates axial gap existing for telescope motor, telescope motor and worm screw are not in axial float during operation, effectively
It avoids that steering column height adjustment is caused to fail because of motor clamping stagnation, improves the reliability that tubing string assembly is adjusted axially, also mention
The high comfortableness and security driven.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the partial structural diagram of the axial-adjustment unit of the electronic four-way adjustable steering pipe column of the present invention；
Fig. 2 is the cross-sectional view of the axial-adjustment unit of the electronic four-way adjustable steering pipe column of the present invention；
Fig. 3 is the structural schematic diagram of electronic four-way adjustable steering pipe column；
Fig. 4 is the main view of electronic four-way adjustable steering pipe column；
Fig. 5 is the cross-sectional view of electronic four-way adjustable steering pipe column；
In the figure, it is marked as the 1, first steering shaft；2, the second steering shaft；3, third steering shaft；4, Hooke's joint；5, axis
To regulating device；501, outer housing；502, force transmission element；503, telescope motor；504, worm screw；505, worm gear；506, the first limit
Part；507, the second locating part；508, axle sleeve；6, upper tubing string assembly；7, lower tubular column assembly；8, angle adjustment device；9, telescoping tube
Assembly.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution
Solution, and facilitate its implementation.
It should be noted that " first ", " second " and " third " does not represent knot in embodiment disclosed below
Structure and/or absolute differentiation relationship functionally, do not represent the successive sequence that executes yet, and merely for convenience of description.
It as shown in Figures 3 to 5, is a kind of electronic four-way adjustable steering pipe column, which includes
Upper tubing string assembly 6, lower tubular column assembly 7, the first steering shaft 1, the second steering shaft 2 connecting with the first steering shaft 1 and second turn to
Third steering shaft 3 that axis 2 connects, the flexible pipe assembly, total with flexible pipe assembly and upper tubing string being rotatablely connected with upper tubing string assembly 6
At 6 connections and for controlling upper tubing string assembly 6 and angle adjustment device 8 that the first steering shaft 1 is swung and of the invention
Axial-adjustment unit, the axial-adjustment unit connect with lower tubular column assembly 7 and flexible pipe assembly and for controlling flexible pipe assembly
Move alonged the axial direction with the first steering shaft 1, the second steering shaft 2 be rotatably arranged in flexible pipe assembly and second turn to
Axis 2 can with flexible pipe assembly synchronize be axially moveable.
Specifically, as shown in Figures 3 to 5, upper tubing string assembly 6 and lower tubular column assembly 7 are both ends open, inner hollow
Structure, upper tubing string assembly 6 is located at the top of lower tubular column assembly 7, steering wheel be located at the top of upper tubing string assembly 6 and steering wheel with
First steering shaft 1 is fixedly connected, and the first steering shaft 1 is set to the both ends of the inside of tubing string assembly 6 and the first steering shaft 1 from upper
The both ends of tubing string assembly 6 are protruding, and the first steering shaft 1 is rotatable relative to upper tubing string assembly 6 and the first steering shaft 1 and upper tube
Column assembly 6 is coaxial arrangement, and the first steering shaft 1 can rotate about the axis thereof on upper tubing string assembly 6, steering wheel is generated
Rotary force is transferred to the second steering shaft 2.Lower tubular column assembly 7 is to be fixedly installed on the instrument beam of vehicle, and flexible pipe assembly is
The structure of both ends open, inner hollow, lower tubular column assembly 7 are sheathed on flexible pipe assembly, lower tubular column assembly 7 and flexible pipe assembly
And be coaxial arrangement, lower tubular column assembly 7 is for playing the guiding role to flexible pipe assembly, it is ensured that flexible pipe assembly can be done along axial direction
The lifting of steering wheel is realized in straight reciprocating motion.Second steering shaft 2 is set to the inside of flexible pipe assembly and the second steering shaft 2
One end from the open at one end protruding of flexible pipe assembly, the second steering shaft 2 is only rotatable relative to flexible pipe assembly and
Two steering shafts 2 are coaxial arrangement with flexible pipe assembly, and the second steering shaft 2 is axially relative to flexible pipe assembly and sets for fixation
It sets, the second steering shaft 2 can do linear reciprocating motion along axial direction in company with flexible pipe assembly is synchronous.Second steering shaft 2 is in telescoping tube
It can be rotated about the axis thereof on assembly, the rotary force that the first steering shaft 1 is transmitted is transferred to third steering shaft 3.Third turns to
Axis 3 is the inside for being rotatably arranged on lower tubular column assembly 7, and one end of third steering shaft 3 is connect with the second steering shaft 2, third
The end that the other end of steering shaft 3 extend out to the outside of lower tubular column assembly 7 and third steering shaft 3 be used for intermediate axis connection, with
The rotary force that second steering shaft 2 is transmitted is transferred to diverter.Third steering shaft 3 it is only rotatable relative to lower tubular column assembly 7 and
Third steering shaft 3 and lower tubular column assembly 7 and the second steering shaft 2 are coaxial arrangement, and third steering shaft 3 is axially relative to down
Tubing string assembly 7 is fixed setting, and the second steering shaft 2 and third steering shaft 3 can be realized by spline to be connected, and realizes synchronous rotary.
First steering shaft 1 is connected with the second steering shaft 2 by Hooke's joint, and Hooke's joint is located at upper tubing string assembly 6 and stretches
Between draw assembly, Hooke's joint enables 2 synchronous rotary of the first steering shaft 1 and the second steering shaft, realizes steering wheel
The transmitting of the rotary force of generation, and make that folder can be generated between the axis of the first steering shaft 1 and the axis of the second steering shaft 2
Angle adapts to the variation of steering wheel position.One end of flexible pipe assembly and one end of upper tubing string assembly 6 are rotatablely connected, and upper tubing string is total
It is to be rotatably arranged on flexible pipe assembly and the axis phase of the rotation centerline of upper tubing string assembly 6 and the first steering shaft 1 at 6
Vertically.The end of flexible pipe assembly connecting with upper tubing string assembly 6 is located at the outside of lower tubular column assembly 7, upper tubing string assembly 6 with
The end of flexible pipe assembly connection is one end far from steering wheel, and upper tubing string assembly 6 passes through two bolt realities with flexible pipe assembly
It is now rotatablely connected, two bolts are coaxial arrangement and two bolts two sides for being located at Hooke's joint are arranged symmetrically, and are stretched
Draw assembly is to be threadedly coupled with bolt, and upper tubing string assembly 6 is equipped with the mounting hole for allowing bolt to be inserted into.
The axial-adjustment unit of the electronic four-way adjustable steering pipe column of the present invention is for realizing steering wheel up and down direction position
It adjusts, under the action of axial-adjustment unit, flexible pipe assembly can move up and down relative to lower tubular column assembly 7, and telescoping tube is total
Linear reciprocating motion is done at along axial direction, tubing string assembly 6, the second steering shaft can be driven while flexible pipe assembly moves up and down
2, the first steering shaft 1 and steering wheel thereon, which synchronize, moves up and down, and then realizes the adjusting of steering wheel up and down direction position.Such as figure
1 to shown in Fig. 5, axial-adjustment unit of the invention include be rotatably arranged on lower tubular column assembly 7 be adjusted axially screw rod,
It is set on flexible pipe assembly and is adjusted axially the nut of screw rod composition worm drive, makes to be adjusted axially screw rod rotation for providing
Driving force telescope motor 503, connect with telescope motor 503 worm screw 504, for worm screw 504 apply load first
Locating part 506 and between the first locating part 506 and worm screw 504 and the force transmission element that can be circumferentially rotated with worm screw 504
502, force transmission element 502 and the first locating part 506 and worm screw 504 are point contact.It is adjusted axially the axis and lower tubular column assembly of screw rod
77 axis is parallel, is adjusted axially the outside that screw rod is located at lower tubular column assembly 7, and nut is to be fixedly installed on flexible pipe assembly
On, it is adjusted axially screw rod and keeps relatively fixed with telescope motor 503 in the axial direction, be adjusted axially screw rod and be only capable of relative to lower tubular column
Assembly 7 is rotated.It is adjusted axially screw rod and nut matches, constitute worm drive, when being adjusted axially screw rod rotation, can make
It obtains nut and does linear reciprocating motion, nut drives flexible pipe assembly to synchronize and does crankmotion, realizes steering wheel up and down direction
The adjusting of position.Worm gear 505 is meshed with worm screw 504, constitutes turbine and worm decelerator, and worm gear 505 is fixedly installed on axial direction
On adjusting screw rod, worm screw 504 is fixedly connected with the motor shaft of telescope motor 503.Worm gear 505 and worm screw 504, which match, to be had certainly
Lock function, so that steering wheel keeps improving reliability at position after adjustment.The fixation of telescope motor 503 is set
It is placed in lower tubular column assembly 7, the shell of telescope motor 503 is fixedly connected with lower tubular column assembly 7, and lower tubular column assembly 7 is to being adjusted axially
Screw rod provides a supporting role, and lower tubular column assembly 7 is sheathed on flexible pipe assembly and play the guiding role to flexible pipe assembly.
As shown in figures 1 and 3, preferably, force transmission element 502 is spheroidal structure, force transmission element 502 is with worm screw 504
Coaxial arrangement.One end of worm screw 504 contacted with force transmission element 502 and the end end face of worm screw 504 be spherical surface, worm screw 504 it is another
End is fixedly connected with the motor shaft of telescope motor 503, and the outer surface of force transmission element 502 is in contact with the end face of worm screw 504, and is formed
Point contact, therefore friction is small between worm screw 504 and force transmission element 502 will not influence telescope motor 503 and worm screw 504
Operating, and force transmission element 502 can be circumferentially rotated with worm screw 504, under the preloaded force effect of setting, can effectively be kept away
Steering column height adjustment fails caused by exempting from because of motor clamping stagnation.
As depicted in figs. 1 and 2, axial-adjustment unit of the invention further includes the outer housing being set on lower tubular column assembly 7
501, force transmission element 502 and the first locating part 506 are located at the inside of outer housing 501 and the first locating part 506 and outer housing 501 are spiral shell
Line connection.Outer housing 501 is located at the outside of lower tubular column assembly 7 and outer housing 501 is fixedly connected with lower tubular column assembly 7, outer housing
501 length directions with certain length and outer housing 501 are parallel with the axis of worm screw 504, worm screw 504 and worm gear 505
The inside of outer housing 501 is set.The inside of outer housing 501 is equipped in accommodate the first locating part 506 and force transmission element 502 first
Threaded hole, first internal thread hole form the opening for allowing the first locating part 506 to pass through on one end end face of outer housing 501, side
Just it dismounts, be also convenient for the first locating part 506 of adjusting is screwed into depth.First locating part 506 is cylindrical body, the first locating part 506
Periphery be equipped with the external screw thread that engage with the internal screw thread in the first internal thread hole, the first locating part 506 and force transmission element 502 and
Worm screw 504 is to be coaxially disposed, the first locating part 506 preferably screw, and the end face of force transmission element 502 and the first locating part 506 is point
Contact.Force transmission element 502 is clipped between the first locating part 506 and worm screw 504, and force transmission element 502 is for applying the first locating part 506
Load transmission to worm screw 504 on.First locating part 506 preloads certain load to force transmission element 502, can eliminate telescope motor
503 axial gap avoids telescope motor 503 and worm screw 504 from axial float occur.
As depicted in figs. 1 and 2, axial-adjustment unit of the invention further includes being set to the inside of outer housing 501 and being arranged
In the axle sleeve 508 on worm screw 504, axle sleeve 508 is located between the helical tooth on force transmission element 502 and worm screw 504.Axle sleeve 508 is two
The cylindrical body of end opening and inner hollow, axle sleeve 508 are fixed at the inside of outer housing 501, and worm screw 504 passes through axle sleeve 508,
Axle sleeve 508 is used to provide radial support to worm screw 504, improves 504 operation stability of worm screw.
As depicted in figs. 1 and 2, axial-adjustment unit of the invention further includes for carrying out axial direction to the first locating part 506
Limit so that the first locating part 506 and outer housing 501 keep relatively-stationary second locating part 507, the second locating part 507 with it is outer
Shell 501 is to be threadedly coupled.The inside of outer housing 501 is equipped with the second internal screw thread for accommodating the second locating part 507 and force transmission element 502
Hole, the second internal thread hole is with the axis perpendicular of the first internal thread hole and the second internal thread hole is connected to the first internal thread hole, should
Second internal thread hole simultaneously forms the opening for allowing the second locating part 507 to pass through, easy disassembly on the one side of outer housing 501.The
Two locating parts 507 are cylindrical body, and the periphery of the second locating part 507 is equipped with to be engaged with the internal screw thread in the second internal thread hole
External screw thread, the second locating part 507 are preferably screw.Second locating part 507 limits the first locating part 506, the second limit
The end of part 507 is contacted with the first locating part 506, between avoiding the first locating part 506 from loosening and causing the axial direction of telescope motor 503
Gap discharges again, improves reliability.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (6)
1. the axial-adjustment unit of electronic four-way adjustable steering pipe column, including telescope motor and the worm screw being connect with telescope motor,
It is characterized by also including the first locating part for applying load to the worm screw and be located at the first locating part and worm screw it
Between and the force transmission element that can be circumferentially rotated with worm screw, force transmission element and the first locating part and worm screw be point contact.
2. the axial-adjustment unit of electronic four-way adjustable steering pipe column according to claim 1, it is characterised in that: the biography
Power part is spheroidal structure, and force transmission element and the worm screw are coaxial arrangement.
3. the axial-adjustment unit of electronic four-way adjustable steering pipe column according to claim 2, it is characterised in that: the snail
One end of bar is contacted with the force transmission element and the end end face of worm screw is spherical surface, and the other end of worm screw and the telescope motor connect
It connects.
4. the axial-adjustment unit of electronic four-way adjustable steering pipe column according to any one of claims 1 to 3, feature exist
In: it further include the outer housing being set on the lower tubular column assembly, the force transmission element and first locating part are located at outer housing
Inside and the first locating part and outer housing be to be threadedly coupled.
5. the axial-adjustment unit of electronic four-way adjustable steering pipe column according to claim 4, it is characterised in that: further include
The axle sleeve for being set to the inside of the outer housing and being sheathed on the worm screw.
6. the axial-adjustment unit of electronic four-way adjustable steering pipe column according to claim 4 or 5, it is characterised in that: also
Including for carrying out axial limiting to first locating part so that the first locating part keeps relatively-stationary with the outer housing
Second locating part, the second locating part are to be threadedly coupled with outer housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553994.4A CN109572798A (en) | 2018-12-19 | 2018-12-19 | The axial-adjustment unit of electronic four-way adjustable steering pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553994.4A CN109572798A (en) | 2018-12-19 | 2018-12-19 | The axial-adjustment unit of electronic four-way adjustable steering pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109572798A true CN109572798A (en) | 2019-04-05 |
Family
ID=65931015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811553994.4A Pending CN109572798A (en) | 2018-12-19 | 2018-12-19 | The axial-adjustment unit of electronic four-way adjustable steering pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109572798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195846A (en) * | 2022-08-17 | 2022-10-18 | 奇瑞汽车股份有限公司 | Electric steering column adjusting structure |
| US20230150565A1 (en) * | 2021-11-17 | 2023-05-18 | Steering Solutions Ip Holding Corporation | Auxiliary unstowing mechanism for vehicle steering column |
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| CN208094362U (en) * | 2017-12-15 | 2018-11-13 | 上海康巴赛特科技发展有限公司 | Eliminate the structure that electronic four-way adjusts tubing string commutation abnormal sound |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230150565A1 (en) * | 2021-11-17 | 2023-05-18 | Steering Solutions Ip Holding Corporation | Auxiliary unstowing mechanism for vehicle steering column |
| US11891108B2 (en) * | 2021-11-17 | 2024-02-06 | Steering Solutions Ip Holding Corporation | Auxiliary unstowing mechanism for vehicle steering column |
| CN115195846A (en) * | 2022-08-17 | 2022-10-18 | 奇瑞汽车股份有限公司 | Electric steering column adjusting structure |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
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| RJ01 | Rejection of invention patent application after publication |