CN111863491A - Push switch - Google Patents
Push switch Download PDFInfo
- Publication number
- CN111863491A CN111863491A CN202010738440.2A CN202010738440A CN111863491A CN 111863491 A CN111863491 A CN 111863491A CN 202010738440 A CN202010738440 A CN 202010738440A CN 111863491 A CN111863491 A CN 111863491A
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- CN
- China
- Prior art keywords
- terminal
- conductive
- conductive end
- movable
- fixed
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches 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
- H01H13/52—Switches 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs
Abstract
The invention relates to the technical field of switches, in particular to a push switch. The push switch comprises a shell, a push piece, a first terminal, a second terminal, a public terminal and an elastic conductive assembly, wherein the elastic conductive assembly comprises a deformable fixed conductive end, a movable conductive end and an elastic conductive piece arranged between the fixed conductive end and the movable conductive end, and the first terminal, the second terminal and the public terminal are all used as electric connection ends and are all arranged on the shell; the pressing piece is connected with the movable conductive end and drives the movable conductive end to move in the shell; the fixed conductive end is electrically connected with the common terminal; the movable conductive end is electrically connected with the first terminal at an initial position, and the movable conductive end is pressed to the fixed conductive end under the action of the pressing piece, so that the fixed conductive end is deformed and is also electrically connected with the second terminal. The push switch of the invention can be triggered to generate different control signals, has rich functions and greatly expands the performance of the product.
Description
Technical Field
The invention relates to the technical field of switches, in particular to a push switch.
Background
A switch is an electronic component that can open a circuit, interrupt current, or cause current to flow to other circuits.
Common switches in the market can only realize simple on-off functions generally, have single functions and limit the expansion of the performance of products.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a push switch aiming at the defects in the prior art, and solve the problems that the existing switch is single in function and limited in product performance expansion.
The technical scheme adopted by the invention for solving the technical problems is as follows: provides a press switch, comprising a shell, a press piece, a first terminal, a second terminal, a public terminal and an elastic conductive component, wherein the elastic conductive component comprises a deformable fixed conductive end, a movable conductive end and an elastic conductive piece arranged between the fixed conductive end and the movable conductive end,
the first terminal, the second terminal and the common terminal are used as electric connection ends and are arranged on the shell;
the pressing piece is connected with the movable conductive end and drives the movable conductive end to move in the shell;
the fixed conductive end is electrically connected with the common terminal;
the movable conductive end is electrically connected with the first terminal at an initial position to form a first electrifying path consisting of the first terminal, the elastic conductive component and the common terminal; and the movable conductive end is pressed to the fixed conductive end under the action of the pressing piece, and the fixed conductive end is deformed and is also electrically connected with the second terminal to form a second through path consisting of the second terminal, the elastic conductive component and the common terminal.
Further preferred embodiments of the present invention are: the elastic conductive piece is a first spring, and two ends of the first spring are respectively connected with the fixed conductive end and the movable conductive end.
Further preferred embodiments of the present invention are: the fixed conductive end is of a bowl-shaped structure, the concave surface of the fixed conductive end faces the movable conductive end, and the public terminal is arranged at the bottom end of the bowl-shaped structure.
Further preferred embodiments of the present invention are: the end face, facing the fixed conductive end, of the movable conductive end is provided with a plurality of pressing protrusions used for extruding the fixed conductive end to enable the fixed conductive end to deform.
Further preferred embodiments of the present invention are: the activity is led electrical property and is held and be equipped with the holding tank, the tip of holding tank outwards extends the setting along its circumference, the electrically conductive one end of piece sets up in the holding tank of elasticity.
Further preferred embodiments of the present invention are: the shell is internally provided with a cavity capable of containing the fixed conductive end, and the end part of the second terminal is arranged in the cavity in a protruding mode and is electrically connected with the fixed conductive end when the fixed conductive end deforms.
Further preferred embodiments of the present invention are: the casing includes the upper cover and with upper cover complex lower cover, it is protruding to cover down to be equipped with the annular, be equipped with first mounting groove and second mounting groove on the annular arch, the second terminal is located in the first mounting groove and its tip stretches out first mounting groove setting and places in the cavity, public terminal is located in the second mounting groove and its tip stretches out the second mounting groove setting and is connected with fixed electrically conductive end electricity.
Further preferred embodiments of the present invention are: the press switch further comprises a second spring arranged between the movable conductive end and the press piece.
Further preferred embodiments of the present invention are: the interior of the pressing piece is of a hollow structure, a first limiting protrusion is arranged on the inner wall surface of the pressing piece, the second spring is sleeved on the movable conductive end, and one end of the second spring is abutted against the first limiting protrusion.
Further preferred embodiments of the present invention are: the shell is provided with a second limiting protrusion, a third limiting protrusion used for limiting the pressing piece to be separated from the shell is arranged on the periphery of the pressing piece, and the third limiting protrusion abuts against the second limiting protrusion.
Compared with the prior art, the flexible conductive component has the advantages that the flexible conductive component is arranged, the flexible conductive component comprises a deformable fixed conductive end, a movable conductive end and a flexible conductive piece arranged between the fixed conductive end and the movable conductive end, the movable conductive end is electrically connected with the first terminal at the initial position and is pressed to the fixed conductive end under the action of the pressing piece, so that the fixed conductive end is deformed and electrically connected with the second terminal, the common terminal, the first terminal and the second terminal have different connection states, the different connection states can be triggered to generate different control signals, or the continuous pressing action combination of the pressing piece is triggered to generate various control signals, the functions are rich, and the performance of the product is greatly expanded.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic perspective view of a push switch of the present invention;
FIG. 2 is a schematic perspective view of another embodiment of the push switch of the present invention;
FIG. 3 is an exploded schematic view of the push switch of the present invention;
FIG. 4 is a schematic cross-sectional view of a push switch (conductive terminal electrically connected to first terminal) of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a schematic cross-sectional view of a push switch of the present invention (with the conductive terminal electrically disconnected from both the first and second terminals);
fig. 7 is a schematic sectional view of a push switch (conductive terminal electrically connected to second terminal) of the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the present invention provides a preferred embodiment of a push switch.
With reference to fig. 1 to 3, the push switch includes a housing 10, a push member 20, a first terminal 30, a second terminal 40, a common terminal 50, and an elastic conductive member 60, wherein the elastic conductive member 60 includes a deformable fixed conductive end 61 and a movable conductive end 62, and an elastic conductive member 63 disposed between the fixed conductive end 61 and the movable conductive end 62, and the first terminal 30, the second terminal 40, and the common terminal 50 are all used as electrical connection ends and are all disposed on the housing 10; the pressing piece 20 is connected with the movable conductive end 62 and drives the movable conductive end 62 to move in the shell 10; the fixed conductive terminal 61 is electrically connected to the common terminal 50; the movable conductive end 62 is electrically connected to the first terminal 30 at an initial position to form a first energizing path composed of the first terminal 30, the elastic conductive member 60 and the common terminal 50; and the movable conductive end 62 is pressed to the fixed conductive end 61 by the pressing piece 20, and the fixed conductive end 61 is deformed and is also electrically connected with the second terminal 40, so that a second through path formed by the second terminal 40, the elastic conductive member 60 and the common terminal 50 is formed.
By arranging the deformable fixed conductive end 61, the movable conductive end 62 and the elastic conductive piece 63, the movable conductive end 62 is electrically connected with the first terminal 30 at the initial position to form a first electrifying path consisting of the first terminal 30, the elastic conductive component 60 and the common terminal 50; the pressing piece 20 is pressed, the elastic conduction is added to be compressed by applying pressure through the movable conducting end 62, the movable conducting end 62 presses the fixed conducting end 61, the fixed conducting end 61 is deformed and is connected with the second terminal 40, a second conduction path formed by the second terminal 40, the elastic conducting component 60 and the public terminal 50 is formed, and therefore the public terminal 50 and the first terminal 30 and the second terminal 40 have different connection states, different connection states can be triggered to generate different control signals, or the continuous pressing action combination of the pressing piece 20 triggers to generate various control signals, the functions are rich, and the performance of a product is greatly improved. Wherein the connection states include the common terminal 50 being electrically connected to only the first terminal 30, the common terminal 50 being electrically disconnected from both the first terminal 30 and the second terminal 40, and the common terminal 50 being electrically connected to only the second terminal 40, and the three connection states can trigger generation of different control signals, so that when the first terminal 30, the second terminal 40, and the common terminal 50 of the push switch are connected to an applied circuit, generation of different control signals can be triggered in a process that the push member 20 is pushed.
Referring to fig. 3, a first mounting post 11 may be disposed inside the housing 10, a through hole 51 is disposed at the end of the common terminal 50 and the center of the fixed conductive end 61, and the common terminal 50 is connected to the fixed conductive end 61 and is sleeved and fixed on the first mounting post 11 through the through hole 51. In addition, the fixed conductive end 61 may be made of conductive reed, which is made of brass with good conductive performance, but in other embodiments, other conductive metal materials, such as red copper, aluminum and alloys thereof, may also be used.
Further, the elastic conductive member 63 is a first spring, two ends of the first spring are respectively connected to the fixed conductive end 61 and the movable conductive end 62, the material of the first spring may be carbon steel wire, and of course, in other embodiments, the elastic conductive member 63 may also be other elastic conductive members, such as conductive foam. When the pressing member 20 is pressed, a pressure is applied to the movable conductive terminal 62, and the movable conductive terminal 62 compresses the first spring and presses the fixed conductive terminal 61, so that the fixed conductive terminal 61 is deformed and electrically connected to the second terminal 40.
Referring to fig. 4 to 6, the fixed conductive terminal 61 in the present embodiment is a bowl-shaped structure, and the concave surface thereof is disposed toward the movable conductive terminal 62, and the common terminal 50 is disposed at the bottom end of the bowl-shaped structure. The movable conductive terminal 62 presses against the fixed conductive terminal 61, deforming the fixed conductive terminal 61 of the bowl-like structure, with the edge abutting against and electrically connecting with the second terminal 40. The fixed conductive end 61 of the bowl-shaped structure can prevent the false triggering of the press switch, that is, when the pressing member 20 is pressed accidentally, the pressing force is not enough to deform the fixed conductive end 61, so as to avoid the electrical connection between the fixed conductive end 61 and the second terminal 40, and achieve the effect of false triggering.
Referring to fig. 3, a plurality of pressing protrusions 621 for pressing the fixed conductive terminal 61 to deform are disposed on an end surface of the movable conductive terminal 62 facing the fixed conductive terminal 61. Specifically, three, four or more than four pressing protrusions 621 may be disposed on the end surface of the movable conductive end 62, and the pressing protrusions 621 are disposed in an even or non-even distribution. Preferably, eight pressing protrusions 621 are disposed on the end surface of the movable conductive end 62, the eight pressing protrusions 621 are uniformly distributed along the circumference of the fixed conductive end 61, and the eight pressing protrusions 621 can uniformly press the fixed conductive end 61 to deform and abut against the second terminal 40 to generate electrical connection.
Further, referring to fig. 3 to 5, the movable conductive end 62 is provided with an accommodating groove 622, an end of the accommodating groove 622 extends outward along a circumferential direction thereof, one end of the elastic conductive member 63 is disposed in the accommodating groove 622, and the plurality of pressing protrusions 621 are disposed on an end surface of the end of the accommodating groove 622 extending outward along the circumferential direction thereof and are uniformly distributed along the circumferential direction thereof. When the elastic conductive member 63 is pressed, it is gradually compressed and received in the receiving groove 622, and the overall volume of the elastic conductive member 60 is smaller, which is beneficial to the miniaturization of the push switch. When the elastic conductive member 63 is a first spring, the first spring is compressed and received in the receiving groove 622.
Referring to fig. 3, in the present embodiment, the push switch further includes a second spring 70 disposed between the movable conductive end 62 and the push member 20. The second spring 70 serves as a buffer during the process that the pressing member 20 presses the movable conductive end 62 to compress the elastic conductive member 63. The second spring 70 may be made of brass, and the first terminal 30, the second terminal 40, the common terminal 50 and the movable conductive terminal 62 may be made of brass, which has good electrical conductivity.
Further, referring to fig. 4 and 5, the interior of the pressing member 20 is a hollow structure, and the inner wall surface of the pressing member is provided with a first limiting protrusion 21, the second spring 70 is sleeved on the movable conductive end 62, and one end of the second spring 70 abuts against the first limiting protrusion 21, and the second spring 70 may be made of a carbon steel wire. Specifically, the second spring 70 is sleeved on the outer wall surface of the receiving groove 622 of the movable conductive end 62, one end of the second spring abuts against the end portion of the receiving groove 622 of the movable conductive end 62, the other end of the second spring abuts against the first limiting protrusion 21, and the second spring 70 plays a role in buffering the moving process of the movable conductive end 62 pressed by the pressing element 20.
Referring to fig. 4 and 5, the housing 10 in this embodiment is provided with a second limiting protrusion 12, the outer periphery of the pressing member 20 is provided with a third limiting protrusion 22 for limiting the pressing member 20 to be separated from the housing 10, and the third limiting protrusion 22 abuts against the second limiting protrusion 12. In a normal state, the third limiting protrusion 22 abuts against the second limiting protrusion 12, and after the pressing piece 20 is pressed, the third limiting protrusion 22 is separated from the second limiting protrusion 12.
Referring to fig. 4, a cavity 13 capable of accommodating the fixed conductive terminal 61 is formed in the housing 10, and an end of the second terminal 40 protrudes from the cavity 13 and is electrically connected to the fixed conductive terminal 61 when the fixed conductive terminal 61 is deformed.
Further, referring to fig. 3, the housing 10 includes an upper cover 14 and a lower cover 15 engaged with the upper cover 14, the lower cover 15 is provided with an annular protrusion 16, the annular protrusion 16 is provided with a first mounting groove 161 and a second mounting groove 162, the second terminal 40 is disposed in the first mounting groove 161, and an end portion of the second terminal extends out of the first mounting groove 161 and is disposed in the cavity 13, and the common terminal 50 is disposed in the second mounting groove 162, and an end portion of the common terminal extends out of the second mounting groove 162 and is electrically connected to the fixed conductive terminal 61.
Further, a second mounting post 163 is disposed on the annular protrusion 16, and the first terminal 30 is disposed on the second mounting post 163, and the end portion thereof protrudes from the second mounting post 163, and is electrically connected to the movable conductive terminal 62 at the initial position. The first mounting groove 161, the second mounting groove 162 and the second mounting post 163 are disposed in such a manner that the components of the push switch are more compact. In the initial position state, the movable conductive terminal 62 abuts against and is electrically connected with the end of the first terminal 30, and after the pressing member 20 is pressed, the movable conductive terminal 62 is pressed to the fixed conductive terminal 61 by the pressing member 20, is disconnected from the first terminal 30, and presses the fixed conductive terminal 61 to deform, and abuts against and is electrically connected with the end of the second terminal 40.
Furthermore, a limiting column 164 may be disposed in the first mounting groove 161, a through hole 51 is disposed on the second terminal 40, and the second terminal 40 is sleeved on the limiting column 164 through the through hole 51 and is disposed in the first mounting groove 161. In addition, a plurality of limiting columns 164 can be arranged on the annular bulge 16 of the lower cover 15, and a plurality of limiting holes correspondingly matched with each limiting column 164 are arranged on the upper cover 14. When the upper cover 14 and the lower cover 15 are assembled, the limiting posts 164 can be installed in the corresponding limiting holes, and the upper cover 14 and the lower cover 15 are bonded through hot melt adhesive.
The specific operating principle of the push switch of the invention is as follows:
the push switch has three operating states, which are defined herein as a first operating state, a second operating state and a third operating state. In a first working state, that is, the push switch is in a natural state, the third limit protrusion 22 on the periphery of the push element 20 abuts against the second limit protrusion 12 on the housing 10, the movable conductive end 62 is located at an initial position and abuts against the first terminal 30, the first terminal 30 is electrically connected with the common terminal 50 through the movable conductive end 62, the elastic conductive piece 63 and the fixed conductive end 61, and is triggered to generate a first control signal, and at this time, the second terminal 40 and the common terminal 50 are in a disconnected electrical connection state; the pressing piece 20 is pressed to apply pressure to the movable conductive end 62, the elastic conductive piece 63 connected with the movable conductive end 62 is compressed, the electric conduction of the movable conductive end 62 is disconnected with the first terminal 30, at the moment, the first terminal 30 and the second terminal 40 are both disconnected with the common terminal 50, and the pressing switch is triggered to generate a second control signal to be in a second working state; and when the pressing piece 20 is continuously pressed, the elastic conductive piece 63 is compressed, and when the movable conductive end 62 is in contact with the fixed conductive end 61 and the fixed conductive end 61 is continuously pressed, the fixed conductive end 61 is deformed to abut against the second terminal 40, the second terminal 40 is electrically connected with the common terminal 50 through the movable conductive end 62 and the fixed conductive end 61 of the movable conductive end 62, a third control signal is triggered to be generated, and the fixed conductive end 61 is deformed by a force and generates force feedback to indicate that the pressing piece 20 is pressed to the bottom. Through the different connection states of the common terminal 50 and the first terminal 30 and the second terminal 40, different control signals are generated by triggering corresponding to the different connection states, or various control signals are generated by triggering combination of continuous pressing actions of the pressing piece 20, so that the functions of the press switch are greatly enriched, and the performance of the product is greatly expanded.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations are intended to fall within the scope of the appended claims.
Claims (10)
1. A push switch is characterized by comprising a shell, a push piece, a first terminal, a second terminal, a public terminal and an elastic conductive component, wherein the elastic conductive component comprises a deformable fixed conductive end, a movable conductive end and an elastic conductive piece arranged between the fixed conductive end and the movable conductive end,
the first terminal, the second terminal and the common terminal are used as electric connection ends and are arranged on the shell;
the pressing piece is connected with the movable conductive end and drives the movable conductive end to move in the shell;
the fixed conductive end is electrically connected with the common terminal;
the movable conductive end is electrically connected with the first terminal at an initial position to form a first electrifying path consisting of the first terminal, the elastic conductive component and the common terminal; and the movable conductive end is pressed to the fixed conductive end under the action of the pressing piece, and the fixed conductive end is deformed and is also electrically connected with the second terminal to form a second through path consisting of the second terminal, the elastic conductive component and the common terminal.
2. The push switch of claim 1, wherein the elastic conductive member is a first spring, and both ends of the first spring are respectively connected to the fixed conductive end and the movable conductive end.
3. The push switch of claim 1, wherein the fixed conductive terminal is a bowl-shaped structure, and the concave surface thereof is disposed toward the movable conductive terminal, and the common terminal is disposed at a bottom end of the bowl-shaped structure.
4. The push switch of claim 1, wherein the end surface of the movable conductive end facing the fixed conductive end is provided with a plurality of pressing protrusions for pressing the fixed conductive end to deform the fixed conductive end.
5. The push switch of claim 1, wherein the movable conductive member is provided with a receiving groove, an end of the receiving groove extends outward along a circumferential direction thereof, and one end of the elastic conductive member is disposed in the receiving groove.
6. The push switch of claim 1, wherein the housing defines a cavity for receiving the fixed conductive terminal, and the second terminal has an end protruding into the cavity and electrically connected to the fixed conductive terminal when the fixed conductive terminal is deformed.
7. The push switch of claim 6, wherein the housing comprises an upper cover and a lower cover engaged with the upper cover, the lower cover having an annular protrusion thereon, the annular protrusion having a first mounting groove and a second mounting groove, the second terminal being disposed in the first mounting groove and having an end portion thereof extending out of the first mounting groove and disposed in the cavity, the common terminal being disposed in the second mounting groove and having an end portion thereof extending out of the second mounting groove and electrically connected to the fixed conductive terminal.
8. The push switch of claim 5, further comprising a second spring disposed between the movable conductive end and the push member.
9. The push switch according to claim 8, wherein the interior of the push member is hollow, and the inner wall of the push member is provided with a first limiting protrusion, the second spring is sleeved on the movable conductive end, and one end of the second spring abuts against the first limiting protrusion.
10. A push switch according to any one of claims 1 to 9 wherein the housing has a second limit projection, the outer periphery of the push member has a third limit projection for limiting the push member from disengaging from the housing, and the third limit projection abuts against the second limit projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738440.2A CN111863491A (en) | 2020-07-28 | 2020-07-28 | Push switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738440.2A CN111863491A (en) | 2020-07-28 | 2020-07-28 | Push switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111863491A true CN111863491A (en) | 2020-10-30 |
Family
ID=72947887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010738440.2A Pending CN111863491A (en) | 2020-07-28 | 2020-07-28 | Push switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111863491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938182A (en) * | 2021-01-27 | 2021-06-11 | 成都敛烈没贸易代理有限公司 | Nitric acid reagent light-resistant storage device that factor of safety is high |
-
2020
- 2020-07-28 CN CN202010738440.2A patent/CN111863491A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938182A (en) * | 2021-01-27 | 2021-06-11 | 成都敛烈没贸易代理有限公司 | Nitric acid reagent light-resistant storage device that factor of safety is high |
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Address after: 518000 2 / F and 3 / F, west side of building a, Xinghong science and Technology Park, 111 Reservoir Road, fenghuanggang community, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: Shenzhen langheng Lighting Technology Co.,Ltd. Address before: 518000 Eighth Floor, 2 Chunggu Building, Meisheng Huigu Science Park, 83 Dabao Road, 33 Shanghe Community, Baoan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN LANGHENG ELECTRICAL Co.,Ltd. |