CN213124248U - Shifting lever type panel switch - Google Patents

Shifting lever type panel switch Download PDF

Info

Publication number
CN213124248U
CN213124248U CN202021840614.8U CN202021840614U CN213124248U CN 213124248 U CN213124248 U CN 213124248U CN 202021840614 U CN202021840614 U CN 202021840614U CN 213124248 U CN213124248 U CN 213124248U
Authority
CN
China
Prior art keywords
swing
contact
swinging
contact piece
rod
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.)
Active
Application number
CN202021840614.8U
Other languages
Chinese (zh)
Inventor
王彪
谭境华
黄锐坚
刘德銮
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.)
Zhongshan City Lion Shield Electric Appliance Co ltd
Original Assignee
Zhongshan City Lion Shield Electric Appliance 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 Zhongshan City Lion Shield Electric Appliance Co ltd filed Critical Zhongshan City Lion Shield Electric Appliance Co ltd
Priority to CN202021840614.8U priority Critical patent/CN213124248U/en
Application granted granted Critical
Publication of CN213124248U publication Critical patent/CN213124248U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Tumbler Switches (AREA)

Abstract

The utility model discloses a dial-rod type panel switch, one end of a swing rod is an opening cavity structure, an elastic part and a marble are arranged in the swing rod, one end of the elastic part is propped against the inner wall of the swing rod, and the other end is propped against the top of the marble; the bottom of the marble is provided with a V-shaped groove, and the opening of the groove faces downwards; the top of the marble is provided with a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are suitable for guiding the elastic element to apply force to the first inclined surface or the second inclined surface when the swing rod swings; the panel is pivotally connected to the surface of the shell, and the panel pivots relative to the shell when being pressed; the driving lever is arranged on one side, facing the swinging assembly, of the panel and extends along the axial direction of the swinging rod, and the driving lever is suitable for driving the swinging rod to swing in the pivoting process of the panel; the swing assembly is connected with the contact plate assembly through the pressure head, the elastic piece pushes the marble to tightly abut against the pressure head, and the pressure head is suitable for driving the contact plate assembly to be switched between a closed state and an open state when the swing rod swings. The utility model has the advantages of stable structure and better hand feeling.

Description

Shifting lever type panel switch
Technical Field
The utility model relates to an electrical equipment technical field especially relates to a driving lever type panel switch.
Background
Most of the existing swing rod type structure switches in the market are characterized in that a spring in a swing piece directly presses a movable contact piece to enable the movable contact piece to be stressed to be in contact with a fixed contact, and the swing piece drives the movable contact piece to swing back and forth to be separated from the fixed contact when swinging back and forth, so that the on-off of the switch is realized. Because the contact of the spring and the movable contact piece is two-point contact, the spring can be distorted and deformed in the swinging process, so that reverse force is generated on the movable contact piece in the horizontal direction, and the contact of the switch is unstable. In addition, most panel switches at present adopt T type pendulum rod, and T type pendulum rod can occupy panel switch's vertical space for panel switch's thickness grow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a shifting lever type panel switch to solve above-mentioned problem.
To achieve the purpose, the utility model adopts the following technical proposal:
a poke rod type panel switch comprises a swing component, a pressure head, a contact piece component, a shell and a panel; the swinging assembly, the pressure head and the contact piece assembly are arranged in the shell;
the swing assembly comprises a swing rod, an elastic part and a marble, wherein one end of the swing rod is of an open cavity structure, the elastic part and the marble are arranged in the swing rod, one end of the elastic part abuts against the inner wall of the swing rod, and the other end of the elastic part abuts against the top of the marble; the top of the marble is provided with a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are suitable for guiding the elastic element to apply force to the first inclined surface or the second inclined surface when the swing rod swings; the bottom of the marble is provided with a V-shaped groove, and the opening of the groove faces downwards;
the panel is pivotally connected to a surface of the housing, the panel pivoting relative to the housing when depressed; a driving lever is arranged on one side, facing the swinging assembly, of the panel, the driving lever extends along the axial direction of the swinging rod, and the driving lever is suitable for driving the swinging rod to swing in the pivoting process of the panel;
the swing assembly is connected with the contact plate assembly through the pressure head, the elastic piece pushes the marble to tightly abut against the pressure head, and the pressure head is suitable for driving the contact plate assembly to be switched between a closed state and an open state when the swing rod swings.
Preferably, arc-shaped convex blocks are arranged on two sides of the outer wall of the swing rod, and the convex blocks are arranged along the swing direction of the swing rod; the driving lever is of a U-shaped structure, the driving lever is clamped on the outer side of the protruding block, and the swinging axis of the swinging rod is overlapped with the pivot axis of the panel.
Preferably, the pressure head comprises a contact piece connecting part and a stressed part; the contact piece connecting part is connected with the contact piece assembly, and the top of the stress part is a smooth surface and is in point contact with the bottom of the marble; the outer side surface of the stress part is a spherical curved surface; the bottom of the swing rod is provided with a swing cavity, and the stress part rotates in the swing cavity.
Preferably, the contact piece assembly includes a wiring portion, a bottom contact piece, a swinging contact piece and a static contact piece; the bottom contact piece and the static contact piece are both connected with the wiring part; the two static contacts are oppositely arranged; the swing contact piece is of an L-shaped structure, the bottom of the swing contact piece is in contact with the bottom contact piece, and the static contact pieces are arranged on two sides of the top of the swing contact piece.
Preferably, the swing contact piece includes a first swing portion and a second swing portion; the first swinging part and the second swinging part are perpendicular to each other; the bottom of the first swinging part is of a wedge-shaped structure; the pressure head is connected with the top of the first swinging part.
Preferably, the bottom of the first swing portion is provided with a clearance groove, and the clearance groove is arranged in the middle of the bottom of the first swing portion.
Preferably, two sides of the top of the second swing part are provided with movable contacts, and two static contacts are provided with static contacts; the two static contacts are symmetrically arranged on two sides of the movable contact; the static contact and the movable contact are both boss-shaped structures.
Preferably, the bottom contact piece comprises a first bottom contact portion, a second bottom contact portion and a third bottom contact portion; the first bottom contact part is of an open frame-shaped structure and is connected with the wiring part; the third bottom contact part is of a plate-shaped structure, and the third bottom contact part and the swinging contact piece are mutually abutted; the second bottom contact portion is connected with the first bottom contact portion and the third bottom contact portion.
Preferably, a reinforcing rib is arranged on the outer side of the shifting rod, and the reinforcing rib extends along the length direction of the shifting rod.
Drawings
The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.
FIG. 1 is an exploded view of one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of one embodiment of the present invention;
FIG. 3 is a perspective view of a contact blade assembly according to one embodiment of the present invention;
fig. 4 is a schematic perspective view of a connection structure between a marble and a pressing head according to one embodiment of the present invention;
FIG. 5 is a perspective view of a bottom contact blade according to one embodiment of the present invention;
in the drawings: 1-swinging component, 11-swinging rod, 111-swinging cavity, 112-lug, 12-elastic piece, 13-marble, 131-groove, 132-first inclined plane, 133-second inclined plane, 2-pressure head, 21-contact connecting part, 22-stress part, 3-contact component, 31-wiring part, 32-bottom contact, 321-first bottom contact part, 322-second bottom contact part, 323-third bottom contact part, 33-swinging contact, 331-first swinging part, 332-second swinging part, 333-clearance groove, 334-movable contact, 34-static contact, 341-static contact, 4-shell, 5-panel, 51-deflector rod and 52-reinforcing rib.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
A lever type panel switch of the present embodiment, as shown in fig. 1 to 5, includes a swing assembly 1, a pressure head 2, a contact assembly 3, a housing 4, and a panel 5; the swinging assembly 1, the pressure head 2 and the contact piece assembly 3 are arranged in the shell 4;
the swing assembly 1 comprises a swing rod 11, an elastic part 12 and a marble 13, wherein one end of the swing rod 11 is of an open cavity structure, the elastic part 12 and the marble 13 are arranged in the swing rod 11, one end of the elastic part 12 abuts against the inner wall of the swing rod 11, and the other end abuts against the top of the marble 13; the top of the pin 13 has a first inclined surface 132 and a second inclined surface 133, and the first inclined surface 132 and the second inclined surface 133 are adapted to guide the elastic element 12 to apply a force to the first inclined surface 132 or the second inclined surface 133 when the swing link 11 swings; a V-shaped groove 131 is formed in the bottom of the marble 13, and the opening of the groove 131 faces downwards;
the panel 5 is pivotally connected to a surface of the housing 4, the panel 5 pivoting relative to the housing 4 when depressed; the panel 5 is provided with a shift lever 51 on a side facing the swing assembly 1, the shift lever 51 extends along the axial direction of the swing link 11, and the shift lever 51 is suitable for driving the swing link 11 to swing during the pivoting process of the panel 5;
the swing assembly 1 is connected with the contact plate assembly 3 through the pressure head 2, the elastic piece 12 pushes the marble 13 to abut against the pressure head 2, and the pressure head 2 is suitable for driving the contact plate assembly 3 to switch between a closed state and an open state when the swing rod 11 swings.
The utility model discloses a dial bar type panel switch, the rotor supports tight structure and sets up in panel switch's casing 4, elastic component 12, pellet shot from a slingshot 13 and pressure head 2 compress tightly each part of contact subassembly 3, panel switch's panel 5 is pressed down to the user's accessible, make panel 5 take place the pivot, panel 5 passes through driving lever 51 drive pendulum rod 11 swing, pendulum rod 11 stirs pressure head 2 swings at the wobbling in-process, and then realize making contact subassembly 3 switch between closed condition and off-state, because driving lever 51 extends along the length direction of pendulum rod 11, consequently can not occupy panel switch's vertical space, make panel switch can be more slim. The direction of the force transmitted to the swing assembly 1 and the elastic element 12 by the panel 5 in the process of pivoting is along the axial direction of the swing rod 11, because the traditional moving plate abutting structure is that the bottom of the elastic element 12 directly abuts against the swing assembly, and the swing rod 11 drives the contact plate assembly 3 to act, because the contact area between the elastic element 12 and the contact plate assembly is extremely small and only two points contact, in the process that the swing rod 11 drives the contact plate assembly 3 through swinging, the spring can be distorted and cannot compress the swing assembly, and when the swinging angle of the swing rod 11 is small, the spring can easily generate the force opposite to the action direction of the swing assembly 1, so that the product is extremely unstable in the use process.
The utility model discloses set up pressure head 2 and pellet shot from a slingshot 13, wherein elastic component 12 links to each other with pellet shot from a slingshot 13, and contact subassembly 3 links to each other with pressure head 2, through the spherical surface contact between pressure head 2 and pellet shot from a slingshot 13, realizes that there is only a contact point between pressure head 2 and pellet shot from a slingshot 13, because pressure head 2 is whole spherical, and pendulum rod 11 nestification is in the pressure head 2 outside, therefore pressure head 2 can rotate at the bottom opening part of pendulum rod 11; the elastic member 12 is a spring, and since the two ends of the elastic member 12 are provided with the protruding ending structures, the first inclined surface 132 and the second inclined surface 133 can provide an avoiding space for the ending structure of the elastic member 12, because if the elastic member 12 is pressed on a plane, the protruding ending structures can distort the elastic member 12, and like the closed state and the open state, the hand feeling of pressing the panel 5 is different, therefore, the elastic member 12 can be tightly pressed against the first inclined surface 132 or the second inclined surface 133 under the guidance of the first inclined surface 132 and the second inclined surface 133, so that the elastic member 12 cannot be distorted, and the hand feeling is better; and the elastic element 12 is in surface contact with the first inclined surface 132 or the second inclined surface 133, so that the reliability is higher, and the problem that the conventional movable piece abutting structure is unstable is effectively solved.
Further, as shown in fig. 1-3, arc-shaped bumps are disposed on two sides of the outer wall of the swing link 11, and the bumps are arranged along the swing direction of the swing link 11; the shift lever 51 is of a U-shaped structure, the shift lever 51 is clamped on the outer side of the bump, and the swing axis of the swing rod 11 coincides with the pivot axis of the panel 5.
In the process that the shifting lever 51 drives the swing rod 11 to swing, relative movement can occur between the shifting lever 51 and the outer wall of the swing rod 11, an arc-shaped convex block is arranged on the outer side of the swing rod 11, the shifting lever 51 clamps the convex block tightly, so that the swing rod 11 is driven to swing, and in the process of swinging the swing rod 11, the shifting lever 51 displaces relative to the convex block, and because the convex block is of an arc-shaped structure, the displacement between the shifting lever 51 and the swing rod 11 can be smoother, and the hand feeling of the panel switch is better.
Further, as shown in fig. 4, the ram 2 includes a contact piece connecting portion 21 and a force receiving portion 22; the contact piece connecting part 21 is connected with the contact piece component 3, and the top of the stress part 22 is a smooth surface and is in point contact with the bottom of the marble 13; the outer side surface of the stress part 22 is a spherical curved surface; the bottom of the swing rod 11 is provided with a swing cavity 111, and the force-bearing part 22 rotates in the swing cavity 111.
The swing cavity 111 limits the pressure head 2 to ensure that the pressure head cannot be separated from the bottom of the swing rod 11. The contact piece connecting part 21 ensures that the pressure head 2 and the contact piece assembly 3 are stably connected. The top of the force-bearing part 22 is smooth, so that the friction with the marble 13 during rotation is reduced, and meanwhile, point contact is kept, and the distortion of the elastic element 12 is avoided. The pressing head 2 and the swinging contact piece 33 are provided as two separate parts in the present embodiment, and the pressing head 2 and the swinging contact piece 33 may be formed as an integral structure.
Further, as shown in fig. 3, the contact piece assembly 3 includes a wiring portion 31, a bottom contact piece 32, a swinging contact piece 33, and a stationary contact piece 34; the bottom contact piece 32 and the static contact piece 34 are both connected with the wiring part 31; the two static contact pieces 34 are oppositely arranged; the swinging contact piece 33 is of an L-shaped structure, the bottom of the swinging contact piece 33 is in contact with the bottom contact piece 32, and the static contact pieces 34 are arranged on two sides of the top of the swinging contact piece 33.
Swing contact 33 contacts with static contact 34 or breaks away from and realizes switching on or breaking off of circuit under the stirring of swing subassembly 1, and swing contact 33L type bottom rotates for the axis of rotation, and when the rotating assembly rotated very little angle, just can drive L type swing contact 33's top and rotate great angle.
Further, the swing contact piece 33 includes a first swing portion 331 and a second swing portion 332; the first and second swinging parts 331 and 332 are perpendicular to each other; the bottom of the first swing part 331 is a wedge-shaped structure; the pressing head 2 is connected to the top of the first swing portion 331.
The wedge-shaped structure can make the contact position of the swinging contact piece 33 and the bottom contact piece 32 be a straight line, so that the swinging contact piece 33 can conveniently rotate by taking the bottom of the first swinging part 331 as a shaft, and meanwhile, the mounting groove limits the rotating shaft of the first swinging part 331 not to deviate towards two sides when the first swinging part 331 rotates.
Further, a clearance groove 333 is provided at the bottom of the first swing portion 331, and the clearance groove 333 is provided at a middle position of the bottom of the first swing portion 331.
Because the bottom of the swinging contact piece 33 is formed by extrusion, the bottom is not flat, and the clearance groove 333 is used for allowing the swinging contact piece 33 to have more contact points to contact with the bottom contact piece 32 below, so that the contact area is large, and the electric conduction capability is better.
Further, two sides of the top of the second swing part 332 are provided with a movable contact 334, and two stationary contacts 34 are provided with a stationary contact 341; the two fixed contacts 341 are symmetrically arranged on two sides of the movable contact 334; the fixed contact 341 and the movable contact 334 are both boss-shaped structures.
When the swinging contact piece 33 contacts the stationary contact piece 34, the stationary contact 341 and the movable contact 334 contact each other to be conducted.
Further, as shown in fig. 3 and 5, the bottom contact piece 32 includes a first bottom contact portion 321, a second bottom contact portion 322, and a third bottom contact portion 323; the first bottom contact portion 321 is an open frame-shaped structure, and the first bottom contact portion 321 is connected to the wiring portion 31; the third bottom contact portion 323 is a plate-shaped structure, and the third bottom contact portion 323 and the swinging contact piece 33 are abutted to each other; the second bottom contact portion 322 connects the first bottom contact portion 321 and the third bottom contact portion 323.
The third bottom contact part 323 supports the swinging contact piece 33, the first bottom contact part 321 is connected with the wiring part 31, the second bottom contact part 322 is connected with the first bottom contact part 321 and the second bottom contact part 322, and the space is reasonably utilized by the three-section structure.
Further, as shown in fig. 2, a rib 52 is disposed outside the shift lever 51, and the rib 52 extends along a length direction of the shift lever 51.
The reinforcing rib 52 reinforces the structure of the shift lever 51, and a triangular structure is formed on the side surface of the shift lever 51, so that the shift lever 51 is more stable.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.

Claims (9)

1. A poke rod type panel switch is characterized by comprising a swinging component, a pressure head, a contact piece component, a shell and a panel; the swinging assembly, the pressure head and the contact piece assembly are arranged in the shell;
the swing assembly comprises a swing rod, an elastic part and a marble, wherein one end of the swing rod is of an open cavity structure, the elastic part and the marble are arranged in the swing rod, one end of the elastic part abuts against the inner wall of the swing rod, and the other end of the elastic part abuts against the top of the marble; the top of the marble is provided with a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are suitable for guiding the elastic element to apply force to the first inclined surface or the second inclined surface when the swing rod swings; the bottom of the marble is provided with a V-shaped groove, and the opening of the groove faces downwards;
the panel is pivotally connected to a surface of the housing, the panel pivoting relative to the housing when depressed; a driving lever is arranged on one side, facing the swinging assembly, of the panel, the driving lever extends along the axial direction of the swinging rod, and the driving lever is suitable for driving the swinging rod to swing in the pivoting process of the panel;
the swing assembly is connected with the contact plate assembly through the pressure head, the elastic piece pushes the marble to tightly abut against the pressure head, and the pressure head is suitable for driving the contact plate assembly to be switched between a closed state and an open state when the swing rod swings.
2. The rocker type panel switch according to claim 1, wherein: arc-shaped convex blocks are arranged on two sides of the outer wall of the swing rod and are arranged along the swing direction of the swing rod; the driving lever is of a U-shaped structure, the driving lever is clamped on the outer side of the protruding block, and the swinging axis of the swinging rod is overlapped with the pivot axis of the panel.
3. The rocker type panel switch according to claim 2, wherein: the pressure head comprises a contact piece connecting part and a stress part; the contact piece connecting part is connected with the contact piece assembly, and the top of the stress part is a smooth surface and is in point contact with the bottom of the marble; the outer side surface of the stress part is a spherical curved surface; the bottom of the swing rod is provided with a swing cavity, and the stress part rotates in the swing cavity.
4. The rocker type panel switch according to claim 2, wherein: the contact piece assembly comprises a wiring part, a bottom contact piece, a swinging contact piece and a static contact piece; the bottom contact piece and the static contact piece are both connected with the wiring part; the two static contacts are oppositely arranged; the swing contact piece is of an L-shaped structure, the bottom of the swing contact piece is in contact with the bottom contact piece, and the static contact pieces are arranged on two sides of the top of the swing contact piece.
5. The rocker type panel switch according to claim 4, wherein: the swing contact piece comprises a first swing part and a second swing part; the first swinging part and the second swinging part are perpendicular to each other; the bottom of the first swinging part is of a wedge-shaped structure; the pressure head is connected with the top of the first swinging part.
6. The rocker type panel switch according to claim 5, wherein: the bottom of the first swing portion is provided with a clearance groove, and the clearance groove is arranged in the middle of the bottom of the first swing portion.
7. The rocker type panel switch according to claim 5, wherein: two sides of the top of the second swinging part are provided with movable contacts, and two static contacts are provided with static contacts; the two static contacts are symmetrically arranged on two sides of the movable contact; the static contact and the movable contact are both boss-shaped structures.
8. The rocker type panel switch according to claim 4, wherein: the bottom contact piece comprises a first bottom contact part, a second bottom contact part and a third bottom contact part; the first bottom contact part is of an open frame-shaped structure and is connected with the wiring part; the third bottom contact part is of a plate-shaped structure, and the third bottom contact part and the swinging contact piece are mutually abutted; the second bottom contact portion is connected with the first bottom contact portion and the third bottom contact portion.
9. The rocker type panel switch according to claim 2, wherein: and a reinforcing rib is arranged on the outer side of the shifting rod and extends along the length direction of the shifting rod.
CN202021840614.8U 2020-08-28 2020-08-28 Shifting lever type panel switch Active CN213124248U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021840614.8U CN213124248U (en) 2020-08-28 2020-08-28 Shifting lever type panel switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021840614.8U CN213124248U (en) 2020-08-28 2020-08-28 Shifting lever type panel switch

Publications (1)

Publication Number Publication Date
CN213124248U true CN213124248U (en) 2021-05-04

Family

ID=75656965

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021840614.8U Active CN213124248U (en) 2020-08-28 2020-08-28 Shifting lever type panel switch

Country Status (1)

Country Link
CN (1) CN213124248U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113345750A (en) * 2021-05-31 2021-09-03 宁波公牛电器有限公司 Switch and electric system
CN116741562A (en) * 2023-08-01 2023-09-12 广州市信征汽车科技有限公司 Module switch and seat adjusting module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113345750A (en) * 2021-05-31 2021-09-03 宁波公牛电器有限公司 Switch and electric system
CN116741562A (en) * 2023-08-01 2023-09-12 广州市信征汽车科技有限公司 Module switch and seat adjusting module
CN116741562B (en) * 2023-08-01 2024-05-14 广州市信征汽车科技有限公司 Module switch and seat adjusting module

Similar Documents

Publication Publication Date Title
CN213124248U (en) Shifting lever type panel switch
CN213124247U (en) Movable sheet abutting structure of switch and panel switch using same
CN113345751B (en) Switch and electric system
CN108766822A (en) A kind of rocker switch
CN213988700U (en) Movable sheet abutting structure supported by multiple points and panel switch using same
CN213988699U (en) Articulated abutting structure and panel switch using same
CN214541984U (en) Ultrathin wall switch with small swing angle
CN112002587A (en) Movable sheet abutting structure of switch and panel switch using same
CN113345750B (en) Switch and electric system
US6717085B2 (en) Press-button switch
CN114242504A (en) Double-rocker switch
CN210296176U (en) Electric parking switch assembly
CN209843569U (en) Self-reset wall switch
CN217306382U (en) Switch
CN219958854U (en) Breaking structure of control switch and control switch with same
CN221747037U (en) Switch
JP4447421B2 (en) Switch device
CN219575475U (en) Switch
EP3300093A1 (en) Switch
CN218769231U (en) Flat self-reset wall switch
CN217114196U (en) Switch
CN221573786U (en) Panel switch
CN217847768U (en) Push-button switch
CN217386937U (en) Switch unit and rotary switch
CN212848162U (en) Key limiting structure of key switch

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant