CN109863571B - Key and electronic device - Google Patents

Key and electronic device Download PDF

Info

Publication number
CN109863571B
CN109863571B CN201780066039.5A CN201780066039A CN109863571B CN 109863571 B CN109863571 B CN 109863571B CN 201780066039 A CN201780066039 A CN 201780066039A CN 109863571 B CN109863571 B CN 109863571B
Authority
CN
China
Prior art keywords
key
switch
operating
device body
actuating element
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
Application number
CN201780066039.5A
Other languages
Chinese (zh)
Other versions
CN109863571A (en
Inventor
王伟
黄星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SZ DJI Technology Co Ltd
Original Assignee
SZ DJI Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SZ DJI Technology Co Ltd filed Critical SZ DJI Technology Co Ltd
Publication of CN109863571A publication Critical patent/CN109863571A/en
Application granted granted Critical
Publication of CN109863571B publication Critical patent/CN109863571B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/12Movable parts; Contacts mounted thereon
    • H01H13/14Operating parts, e.g. push-button
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/52Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch

Abstract

A key (2) includes a switch element (21) and a switch actuating element (22), and the switch actuating element (22) includes an operating portion (221), a mounting portion (222), and an elastic arm portion (223) extending between the operating portion (221) and the mounting portion (222). The mounting part (222) comprises a first positioning structure (2221) for limiting the deflection of the operating part (221) around the mounting part (222), when the switch actuating element (22) is mounted on the device body (1), as long as the mounting part (222) and the device body (1) are positioned through the first positioning structure (2221), the switch actuating element (22) cannot move or rotate in the direction parallel to the mounting surface (14) on the device body (1), the position of the operating part (221) in the direction parallel to the mounting surface (14) on the device body (1) is fixed, and further the relative position of the operating part (221) and the key hole (11) on the device body (1) is not influenced by assembly errors, and the operating part (221) and the key hole (11) can constantly obtain higher concentricity. The electronic device comprises a device body (1) and a key (2) arranged on the device body (1), wherein an operation part (221) of the key (2) and a key hole (11) in the device body (1) can keep concentric, and the key (2) has good pressing hand feeling and sensitivity.

Description

Key and electronic device
Technical Field
The invention relates to a key and an electronic device with the key.
Background
The key includes a switch element and a switch actuation element that activates the switch element when depressed. When the switch actuating element is assembled on the device body, the switch actuating element is firstly positioned with the device body and then fixed with the device body. During the assembly process of the switch actuating element, the switch actuating element is easy to shake, so that the concentricity of an operating part for receiving pressing and a key hole on the device body is poor, and the problems of poor key pressing hand feeling, insensitive response and the like often exist.
Disclosure of Invention
Technical problem to be solved
An object of the present invention is to provide a key having a good pressing feeling and sensitivity.
An object of the present invention is to provide an electronic device having a key with good pressing feeling and sensitivity.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
one aspect of the present invention provides a key including a switch element and a switch actuating element, the switch actuating element including an operating portion, a mounting portion, and an elastic arm portion extending between the operating portion and the mounting portion; the operating part comprises a first surface suitable for receiving pressing and a second surface suitable for being contacted with the switch element, and the switch element is arranged below the second surface of the switch actuating element at intervals; the mounting portion includes a first locating feature that limits deflection of the operating portion about the mounting portion.
According to the present invention, the elastic arm portion extends linearly between the operating portion and the mounting portion.
According to the present invention, the first surface and the second surface of the operating portion define therebetween a thickness direction of the operating portion, the operating portion including a first position and a second position along the thickness direction; the elastic arm part comprises an upper surface which is consistent with the first surface of the operation part in orientation, and a lower surface which is consistent with the second surface of the operation part in orientation, the thickness direction of the elastic arm part is defined between the upper surface and the lower surface, and the movement of the operation part from the first position to the second position drives the elastic arm part to bend downwards to form a state that the lower surface is pressed and the upper surface is pulled.
According to the invention, the first positioning structure comprises at least two columnar, hole-shaped or groove-shaped structures which are arranged at intervals; or the first positioning structure is a strip-shaped hole or a strip-shaped groove.
According to the present invention, at least one downwardly protruding stopper structure is formed on the second surface of the operating portion and/or the lower surface of the elastic arm portion.
According to the present invention, the operating portion, the mounting portion, and the elastic arm portion are integrally formed.
According to the invention, the switching element is arranged eccentrically with respect to the operating part of the switch actuating element, the distance between the center axis of the switching element and the center axis of the operating part being predetermined.
According to the present invention, the distance between the central axis of the switch element and the mounting portion of the switch actuating element is greater than the distance between the central axis of the operating portion and the mounting portion.
Another aspect of the present invention provides an electronic device, which includes a device body and any of the above-mentioned buttons mounted on the device body.
According to the invention, the device body is also provided with a second positioning structure which is matched with the first positioning structure of the switch actuating element of the key for positioning.
According to the invention, the electronic device further comprises a light-emitting element, the switch element and the operation part are eccentrically arranged, and the light-emitting element is arranged right below the operation part of the key.
(III) advantageous effects
The invention has the beneficial effects that:
the key of the present invention includes a switch element and a switch actuating element, the switch actuating element including an operating portion, a mounting portion, and a resilient arm portion extending between the operating portion and the mounting portion. The operating part comprises a first surface suitable for receiving pressing and a second surface suitable for being contacted with the switch element, the switch element is arranged below the second surface of the switch actuating element at intervals, and when the operating part is pressed, the operating part moves downwards to trigger the switch element. The installation part comprises a first positioning structure which limits the operation part to deflect around the installation part, so when the switch actuating element is installed on the device body, as long as the installation part and the device body are positioned through the first positioning structure, the switch actuating element can not move or rotate in the direction parallel to the installation surface on the device body, the position of the operation part in the direction parallel to the installation surface on the device body can be fixed, furthermore, the relative position of the operation part and the key hole can not be influenced by assembly errors, and the operation part and the key hole can constantly obtain higher concentricity. Therefore, the assembled key has better pressing hand feeling and sensitivity.
The electronic device comprises the device body and the key, wherein the key is arranged on the device body, and the operating part of the key and the key hole on the device body can constantly obtain higher concentricity. Therefore, the key of the electronic device has better pressing hand feeling and sensitivity.
Drawings
Fig. 1 is a partial perspective view of an electronic device according to a first embodiment, in which a device body and a switch actuating element in a key are shown;
FIG. 2 is a top view of the switch actuating member and device body assembly of FIG. 1;
fig. 3 is a schematic cross-sectional view of an electronic device according to a first embodiment, in which a device body, a key, and a PCB board are shown;
fig. 4 is a partial perspective view of the electronic device according to the second embodiment, in which the device body and the switch actuating elements in the keys are shown;
fig. 5 is a schematic cross-sectional view of the electronic device according to the second embodiment, in which a device body, keys, and a PCB board are shown.
[ reference numerals ]
1: a device body; 11: a key hole; 12: a second positioning structure; 13: a PCB board; 14: a mounting surface; 2: pressing a key; 21: a switching element; 22: a switch actuating element; 221: an operation section; 2211: a first surface; 2212: a second surface; 2213: a limiting structure; 222: an installation part; 2221: a first positioning structure; 223: an elastic arm portion; 2231: an upper surface; 2232: a lower surface; l: the distance is preset.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. Where directional terms such as "upper", "lower", "top", etc. are used herein with reference to the orientation of fig. 3 and 5.
Example one
Referring to fig. 1 to 3, the present embodiment provides a key and an electronic device having the same. Specifically, in the present embodiment, the electronic device includes a device body 1, and a key 2 mounted on the device body 1. The key 2 comprises a switch element 21 and a switch actuation element 22. The switch element 21 is provided on the PCB board 13 of the apparatus body 1, and the switch actuating element 22 includes an operating portion 221 that receives downward pressing, a mounting portion 222 for positioning in cooperation with the apparatus body 1, and an elastic arm portion 223 extending between the operating portion 221 and the mounting portion 222.
In this embodiment, the operation portion 221 includes a first surface 2211 adapted to receive a press and a second surface 2212 adapted to contact the switch element 21, the switch element 21 is disposed below the second surface 2212 of the switch actuating element 22 at an interval, and the top surface of the mounting portion 222 is fixedly connected to the apparatus body 1, for example, heat-staked. When the operation part 221 is pressed down, the mounting part 222 is fixed, one end of the elastic arm part 223 connected with the operation part 221 moves downward along with the operation part 221, the elastic arm part 223 deforms, and the operation part 221 moves down for a certain distance to touch the switch element 21. After the depression force acting on the operation portion 221 disappears, the elastic arm portions 223 rebound to bring the operation portion 221 back to the original non-pressed position.
In this embodiment, the operation portion 221 protrudes through the key hole 11 of the device body 1, and the first surface 2211 of the operation portion 221 is directly pressed by the operator. However, the present invention is not limited to this, and in another embodiment, the key 2 may include a pressing element alone, the pressing element is located above the operation portion 221 and is installed in the key hole 11 to be movable up and down, and when the pressing element is pressed down by the operator, the pressing element presses down the first surface 2211 of the operation portion 221 to drive the operation portion 221 to press down. Thus, the first surface 2211 of the operation portion 221 that receives the pressing may receive the pressing by the operator directly or receive the pressing by a separate pressing member.
In the present embodiment, the operation portion 221 is integrally formed, but in other embodiments, the operation portion 221 may be a separate piece including a pressing portion for receiving the pressing of the operator and a supporting portion for fixing the pressing portion.
In the present embodiment, the mounting portion 222 includes the first positioning structure 2221, and the first positioning structure 2221 restricts the deflection of the operating portion 221 around the mounting portion 222, so that when the switch actuating element 22 is mounted on the device body 1, as long as the mounting portion 222 and the device body 1 are positioned by the first positioning structure 2221, the switch actuating element 22 will not move or rotate any more in the direction parallel to the mounting surface 14 on the device body 1 (only up-down movement perpendicular to the mounting surface 14 is possible), and the position of the operating portion 221 in the direction parallel to the mounting surface 14 on the device body 1 is fixed, and further, the relative position of the operating portion 221 and the key hole 11 will not be affected by assembly errors, and both can constantly obtain high concentricity. Therefore, the assembled key has better pressing hand feeling and sensitivity.
Cooperatively, the device body 1 is provided with a second positioning structure 12, and the second positioning structure 12 is positioned in cooperation with the first positioning structure 2221 of the switch actuating element 22 of the push button 2 to limit the deflection of the operating portion 221 around the mounting portion 222.
In the present embodiment, the switch actuating member 22 includes an operating portion 221, a mounting portion 222, and a resilient arm portion 223. The first positioning structure 2221 includes two hole-shaped structures that are arranged at an interval, and a line connecting centers of the two hole-shaped structures is perpendicular to a linear extending direction of the elastic arm portion 223. Cooperatively, the second positioning structure 12 includes two pillar structures disposed at intervals, and the two pillar structures and the two hole structures are plugged together in a one-to-one correspondence manner, so as to limit the deflection of the operation portion 221 around the installation portion 222.
Of course, the present invention is not limited thereto, and in other embodiments, the hole-shaped structures in the first positioning structures 2221 can be replaced by column-shaped structures, and in cooperation, the hole-shaped structures in the second positioning structures 12 can be replaced by column-shaped structures; alternatively, the hole-like structure in the first positioning structure 2221 may be replaced by a groove-like structure, which is matched with the pillar-like structure in the second positioning structure 12; also, the number of the first positioning structures 2221, regardless of whether they include hole-shaped structures, pillar-shaped structures, or groove-shaped structures, is not limited to two, and may be any value greater than two; the positions of the plurality of hole-like, column-like, and groove-like structures are not limited to the above positions, and may also function to restrict the operation portion 221 from deflecting around the mounting portion 222 when located at other positions; also, the switch actuating element 22 may further include one operating portion 221, two mounting portions 222 disposed at both sides of the operating portion 221, and two elastic arm portions 223, in which case the plurality of hole/column/groove structures of the first positioning structure 2221 may be disposed at the two mounting portions 222, respectively.
Further, in the present embodiment, the elastic arm 223 extends linearly between the operation portion 221 and the mounting portion 222, and when the operation portion 221 is pressed down, the elastic arm 223 extending along the straight line is bent and deformed downward, so that a stronger elastic force is provided compared with the torsional deformation in the prior art, the defect of weak elasticity in the prior art is overcome, the pressing hand feeling of an operator is improved, and a silicone pad does not need to be added.
Specifically, in the present embodiment, the first surface 2211 and the second surface 2212 of the operation portion 221 define a thickness direction of the operation portion 221, and the operation portion 221 includes a first position and a second position along the thickness direction, where the operation portion 221 is located when there is no pressing, and the second position is where the operation portion 221 activates the switch element 21. The elastic arm portion 223 includes an upper surface 2231 facing the first surface 2211 of the operation portion 221 and a lower surface 2232 facing the second surface 2212 of the operation portion 221, a thickness direction of the elastic arm portion 223 is defined between the upper surface 2231 and the lower surface 2232, and the movement of the operation portion 221 from the first position to the second position drives the elastic arm portion 223 to bend downward to form a state where the lower surface 2232 is pressed and the upper surface 2231 is pulled, that is, when the operation portion 221 is pressed down, the elastic arm portion 223 bends downward and deforms.
In the present embodiment, the width (i.e., the dimension in the direction perpendicular to the extending direction and the thickness direction) of the elastic arm portion 223 is 2.5mm or more, and the thickness is 0.7mm or more. So set up, be favorable to strengthening the elasticity of elasticity arm 223, and then make to press and feel better.
In this embodiment, the electronic device further includes a light emitting element (not shown), the switch element 21 is disposed eccentrically from the operation portion 221, and a distance between a central axis of the switch element 21 and a central axis of the operation portion 221 is a predetermined distance L. By the eccentric arrangement of the switching element 21 and the operation portion 221, a sufficient space is left below the operation portion 221, so that other elements such as a light emitting element and the like can be arranged below the operation portion 221. In the present embodiment, the light emitting element is provided directly below the operation unit 221 of the key 2, so that it is ensured that light is observed symmetrically and uniformly at each position of the operation unit 221. Alternatively, the switch element 21 is at least partially located outside the downward orthographic projection area of the first surface 2211, so that the light emitted by the light emitting element is irradiated onto the operation portion 221 as sufficiently as possible, so that when viewed from the outside of the electronic device, the light uniformly transmitted outward from the opening area on the panel of the electronic device corresponding to the operation portion 221 can be observed.
In the present embodiment, the distance between the central axis of the switch element 21 and the mounting portion 222 of the switch actuating element 22 is greater than the distance between the central axis of the operating portion 221 and the mounting portion 222, that is, the switch element 21 is disposed on the side of the operating portion 221 away from the mounting portion 222, so that no matter which part of the operating portion 221 is pressed, a better pressing feeling can be obtained, and a better operation sensitivity can be obtained at any position pressed on the first surface 2211.
In this embodiment, at least one downward protruding stopper 2213 is formed on the lower surface 2232 of the elastic arm 223, and after the operation portion 221 is pressed down a certain distance, the stopper 2213 touches the PCB 13 located therebelow, so as to prevent the operation portion 221 from being pressed down by a large force. It can be understood that the distance between the limiting structure 2213 and the PCB 13 is larger than the distance between the operating part 221 and the switch element 21 when the operating part 221 is located at the first position, otherwise the operating part 221 cannot touch the switch element 21. When the position-limiting structure 2213 is located on the elastic arm 223, the position-limiting structure can give way to the light-emitting device, so that the light-emitting device is located below the operation portion 221. Of course, not limited to the above design, the stopper 2213 may be formed on the second surface 2212 of the operation portion 221.
In the present embodiment, the operating portion 221, the mounting portion 222, and the elastic arm portion 223 are integrally molded to form an integral piece.
Optionally, the electronic device is a remote control, for example a remote control of an unmanned aerial vehicle. However, the present invention is not limited to this, and the key and the electronic apparatus of the present embodiment can be applied to other electronic apparatuses having keys.
Example two
Referring to fig. 4, in the present embodiment, the difference from the first embodiment is that the first positioning structure 2221 is a strip-shaped hole, and two columnar structures as the second positioning structures 12 respectively abut against inner walls of two ends of the strip-shaped hole to limit the deflection of the operating portion 221 around the axis of the mounting portion 222. Of course, in other embodiments, the strip-shaped holes may be replaced by strip-shaped grooves.
EXAMPLE III
Referring to fig. 5, in the present embodiment, a difference from the above-described embodiments is that the switching elements 21 are all located in the forward projection area downward of the first surface 2211.
With reference to the first and third embodiments, the preset distance L between the central axis of the switching element 21 and the central axis of the operating portion 221 can be theoretically achieved as long as it is spatially allowable.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims (9)

1. A key comprising a switch element and a switch actuation element, characterized in that,
the switch actuating element includes an operating portion, a mounting portion, and a resilient arm portion extending between the operating portion and the mounting portion;
the operating portion comprises a first surface suitable for receiving pressing and a second surface suitable for being in contact with the switch element, and the switch element is arranged below the second surface of the switch actuating element at intervals;
the mounting portion includes a first locating feature that limits deflection of the operating portion about the mounting portion;
the switch element is eccentrically arranged relative to the operation part of the switch actuating element, and the distance between the central axis of the switch element and the central axis of the operation part is preset.
2. The key of claim 1,
the resilient arm portion extends linearly between the operating portion and the mounting portion.
3. The key of claim 2,
the first surface and the second surface of the operating part define the thickness direction of the operating part therebetween, and the operating part comprises a first position and a second position along the thickness direction;
the elastic arm part comprises an upper surface which is consistent with the first surface of the operation part in orientation and a lower surface which is consistent with the second surface of the operation part in orientation, the thickness direction of the elastic arm part is defined between the upper surface and the lower surface, and the operation part is driven to bend downwards from the first position to the second position to form a state that the lower surface is pressed and the upper surface is pulled.
4. The key of claim 1,
the first positioning structure comprises at least two columnar, hole-shaped or groove-shaped structures which are arranged at intervals; or
The first positioning structure is a strip-shaped hole or a strip-shaped groove.
5. The key of claim 1,
at least one limiting structure protruding downwards is formed on the second surface of the operating part and/or the lower surface of the elastic arm part.
6. The key of any of claims 1-5,
the operating portion, the mounting portion, and the elastic arm portion are integrally formed.
7. The key of claim 1,
the distance between the central axis of the switch element and the installation part of the switch actuating element is greater than the distance between the central axis of the operation part and the installation part of the switch actuating element.
8. An electronic device, comprising a device body and a key according to any one of 1-7 mounted on the device body.
9. The electronic device of claim 8,
the device body is also provided with a second positioning structure which is matched with the first positioning structure of the switch actuating element of the key for positioning; or the electronic device further comprises a light-emitting element, the switch element and the operation part are eccentrically arranged, and the light-emitting element is arranged right below the operation part of the key.
CN201780066039.5A 2017-05-23 2017-06-27 Key and electronic device Expired - Fee Related CN109863571B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2017205773414 2017-05-23
CN201720577341.4U CN206742120U (en) 2017-05-23 2017-05-23 Button and electronic installation
PCT/CN2017/090411 WO2018214223A1 (en) 2017-05-23 2017-06-27 Button and electrical device

Publications (2)

Publication Number Publication Date
CN109863571A CN109863571A (en) 2019-06-07
CN109863571B true CN109863571B (en) 2020-12-01

Family

ID=60566567

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201720577341.4U Active CN206742120U (en) 2017-05-23 2017-05-23 Button and electronic installation
CN201780066039.5A Expired - Fee Related CN109863571B (en) 2017-05-23 2017-06-27 Key and electronic device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201720577341.4U Active CN206742120U (en) 2017-05-23 2017-05-23 Button and electronic installation

Country Status (2)

Country Link
CN (2) CN206742120U (en)
WO (1) WO2018214223A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111163607B (en) * 2019-12-26 2021-09-07 Oppo广东移动通信有限公司 Electronic device and method of assembling the same
FI4064308T3 (en) * 2021-03-24 2024-01-18 Schneider Electric Ind Sas Push button switching assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002343183A (en) * 2001-05-22 2002-11-29 Noritz Corp Switch-operation structure
CN201327784Y (en) * 2008-11-04 2009-10-14 神讯电脑(昆山)有限公司 Key-press structure
CN201348957Y (en) * 2009-01-14 2009-11-18 英业达股份有限公司 Keystroke and electron device
DE102010027799A1 (en) * 2010-04-15 2011-10-20 BSH Bosch und Siemens Hausgeräte GmbH Operating device for a domestic appliance and domestic appliance with an operating device
JP6224649B2 (en) * 2015-05-13 2017-11-01 ファナック株式会社 Key switch structure
CN205081039U (en) * 2015-09-22 2016-03-09 尚平 Button subassembly and stereo set

Also Published As

Publication number Publication date
WO2018214223A1 (en) 2018-11-29
CN206742120U (en) 2017-12-12
CN109863571A (en) 2019-06-07

Similar Documents

Publication Publication Date Title
US6700565B2 (en) Slide switch
US8354606B2 (en) Push switch equipped with capacitance sensor and input device including the same
US9592735B2 (en) Operating device for a vehicle component
EP0995210B1 (en) Housing and actuator button assembly
JP2002287891A5 (en)
EP1981049B1 (en) Push button switch device
CN109863571B (en) Key and electronic device
US6906269B2 (en) Multi-directional slide switch
EP1310967A2 (en) Input device which varies output value in accordance with pressing force
CN111669890A (en) Circuit board, multidirectional input device, handle and game machine
KR20020012499A (en) Key switch with elevation type key top and method for assembling the same
KR102380716B1 (en) Keyboard Switch
EP0423924B1 (en) Long traveling button switch with enhanced user feedback
US20090272640A1 (en) Electrical switch with detection and an assembly comprising such a detecting switch
US20140374225A1 (en) Pressure and Rotationally Actuated Control Element for a Motor Vehicle
US11670465B2 (en) Key structure
CN114005694A (en) Push-button switch
US20050161315A1 (en) Switch comprising an operating rocker button
EP3582243B1 (en) Four-way switch including malfunction prevention structure
JP6294290B2 (en) Switch device
JP2008311101A (en) Key switch structure
WO2021220979A1 (en) Switch
US20220375703A1 (en) Switch device
US9955594B2 (en) Operation device
JP2021180131A (en) Push button structure and electronic apparatus

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20201201

CF01 Termination of patent right due to non-payment of annual fee