WO2016004755A1

WO2016004755A1 - Ultra-thin keyboard switch

Info

Publication number: WO2016004755A1
Application number: PCT/CN2015/071178
Authority: WO
Inventors: 吴福喜
Original assignee: 东莞市凯华电子有限公司
Priority date: 2014-07-08
Filing date: 2015-01-21
Publication date: 2016-01-14
Also published as: CN104299828B; CN104299827A; KR101870587B1; CN104299828A; KR20170016982A; CN104299827B

Abstract

Disclosed is an ultra-thin keyboard switch. The ultra-thin keyboard switch comprises a base body, a static wafer, a supporting piece, a movable wafer, a lower frame, an upper frame, and a keycap. The static wafer and the supporting piece are disposed on the base body in a mutually separated manner. The static wafer is provided with a first welding pin and a static contact. The supporting piece is provided with a second welding pin. Both the second welding pin and the first welding pin stretch out of the base body. One end of the movable wafer is kept to be electrically connected to the supporting piece in a contacting manner. The other end of the movable wafer is provided with a movable contact, and the movable contact is located above the static contact. The upper frame and the lower frame are pivotally connected together in a mutually intersecting and overlapping manner, the upper frame and the lower frame are combined to form an X-shaped structure so as to drive the movable wafer to move, and guide columns used in the prior art are replaced, so that the overall thickness of the product is reduced; in addition, no matter where a finger acts on the keycap, the upper frame and the lower frame can be in linkage to drive the movable wafer to move, stable downward pressing is achieved, conductive connection between the static wafer and the movable wafer is more sensitive, and the product is more convenient to use.

Description

Ultra-thin keyboard switch

Technical field

The invention relates to the field of keyboard switch technology, in particular to an ultra-thin keyboard switch.

Background technique

The keyboard switch, as the name implies, is a switch applied and mounted on a keyboard. The main structure of the switch includes a base, an upper cover, a static contact piece, a movable contact piece and a button member, and the upper cover and the base are enclosed. The accommodating cavity, the static contact piece, the movable contact piece and the button member are disposed in the accommodating cavity, and one end of the button member is exposed outside the accommodating cavity, and the button member is moved up and down by pressing the manipulation button member, and then the button is passed through the button The piece acts on the movable contact piece such that the movable contact piece is in contact with or disconnected from the static contact piece.

The above-mentioned existing keyboard switch structure can provide the user with the effect of disconnecting or conducting the connection between the static contact piece and the movable contact piece, and is indeed progressive, but finds its own structure and use in actual use. There are still many shortcomings in performance, which cause the existing keyboard switch to fail to achieve the best use effect and work efficiency in practical applications. :

The button member of the switch of the existing keyboard is in the form of a guide post, so that the whole product is thicker, and the button member is mounted on the bottom center of the key cap. When the finger only acts on one side edge of the key cap, the button member cannot be smoothly The pressure, and thus the conduction between the static contact piece and the movable contact piece, cannot be achieved, and the use is relatively inconvenient.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and its main object is to provide an ultra-thin keyboard switch, which can effectively solve the problem that the existing keyboard switch is thick and inconvenient to use.

In order to achieve the above object, the present invention adopts the following technical solutions:

An ultra-thin keyboard switch includes a seat body, a static contact piece, a support piece, a movable contact piece, a lower frame, an upper frame and a key cap; the static contact piece and the support piece are separately disposed on the base body, and the static touch The sheet has a first soldering leg and a static contact, the supporting piece has a second soldering leg, and the second soldering leg and the first soldering leg respectively extend outside the body; the movable contact piece is in contact with the supporting piece and is electrically connected The other end of the contact has a movable contact, and the movable contact is located above the static contact; the upper frame and the lower frame cross each other and can be pivotally connected together, and the lower end of the upper frame and the lower end of the lower frame respectively The two ends of the base body are pivotally connected, and the upper end of the upper frame and the upper end of the lower frame are respectively pivotally connected with the bottom ends of the key cap, and the upper frame and the lower frame form an X-shaped structure to drive the movable contact activities, when the upper frame and the lower frame are When in the folded state, the movable contact is in electrical contact with the stationary contact, and the movable contact is disposed on the elastic member that causes the movable contact to be reset such that the movable contact leaves the stationary contact.

As a preferred solution, the lower frame and the upper frame are both U-shaped, and the lower frame includes a first cross bar and two first links, and both ends of the first cross bar extend outwardly to have a first shape. a pivoting shaft, the first pivoting shaft is pivotally connected to the keycap, and the two first connecting rods are parallel to each other and respectively integrally connected with the two ends of the first crossbar, and the inner ends of the tail ends of the two first connecting rods are extended a second pivoting shaft, the second pivoting shaft is pivotally connected to the base; the upper frame includes a second crossbar and two second links, and both ends of the second crossbar extend outwardly to have a third pivot The second pivoting shaft is pivotally connected to the keycap, and the two second connecting rods are parallel to each other and integrally connected with the two ends of the second crossbar, and the inner ends of the second connecting rods are extended a fourth pivoting shaft, the fourth pivoting shaft is pivotally connected to the seat body, and the two second links are respectively located on the inner sides of the two first links, and the middle portions of the two second links respectively correspond to the two first links The middle is pivoted.

As a preferred solution, the first end surface of the first connecting rod is concavely provided with a first embedding groove, and the inner side of the front end of the first connecting rod is concavely provided with a second embedding groove, and in the overlapping state, the second connecting rod The front half is embedded in the first embedding groove, and the rear half of the second link is embedded in the second embedding groove.

As a preferred solution, a sixth pivoting shaft extends outwardly from a central portion of the second connecting rod, and correspondingly, the first connecting rod is provided with a pivoting hole, and the sixth pivoting shaft is inserted into the pivoting hole. The center is connected.

As a preferred solution, the first pivoting slot and the second pivoting slot are recessed on the base body, and the second pivoting shaft and the fourth pivoting axle are respectively engaged with the first pivoting slot and the first pivoting slot The second pivoting slot is disposed in the first pivoting slot and the second pivoting slot. The upper cover is respectively disposed in the first pivoting slot and the second pivoting slot. The contact is located below the upper cover.

As a preferred solution, the bottom of the keycap is provided with a third pivoting slot and a fourth pivoting slot, and the first pivoting shaft and the third pivoting axle respectively are respectively engaged with the third pivoting slot and the first pivoting slot The four pivoting slots are pivotally connected.

As a preferred solution, the elastic member is a tension spring, and one end of the tension spring is hooked with the upper frame, and the other end of the tension spring is hooked with the movable contact piece.

As a preferred embodiment, the elastic member is a spring piece integrally formed on the touch piece, and the movable contact piece is mounted and connected to the lower frame.

As a preferred solution, the seat body is embedded in the X-shaped structure.

As a preferred solution, the seat body is located below the X-shaped structure.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:

By using the upper frame and the lower frame to cross each other and being pivotally connected together, and engaging the upper frame and the lower frame to form an X-shaped structure to drive the movable contact activity, instead of the traditional use of the guide column, the product is made. The overall thickness is thinned, and regardless of any position of the finger on the keycap, the upper frame and the lower frame can be linked to move the movable contact to achieve stable pressing, so that the static contact and the movable contact are connected. More sensitive, the product is more convenient to use.

DRAWINGS

1 is a perspective view showing the assembly of a first preferred embodiment of the present invention;

Figure 2 is an exploded view of the first preferred embodiment of the present invention;

Figure 3 is an exploded perspective view of another angle of the first preferred embodiment of the present invention;

Figure 4 is a further exploded perspective view of the first preferred embodiment of the present invention;

Figure 5 is a partial assembled view of a first preferred embodiment of the present invention;

Figure 6 is a schematic view showing the state in which the upper frame and the lower frame are opened in Figure 5;

Figure 7 is a schematic view showing the state of use of the first preferred embodiment of the present invention;

Figure 8 is an enlarged schematic view showing the upper frame and the lower frame in the first preferred embodiment of the present invention;

Figure 9 is a cross-sectional view showing a first preferred embodiment of the present invention;

Figure 10 is a partially assembled perspective view of a second preferred embodiment of the present invention;

Figure 11 is a partially assembled perspective view of a third preferred embodiment of the present invention.

Description of the figure:

10, PCB board 11, LED lights

20, seat 21, gap

22, the cavity 23, the first pivot slot

24, the second pivot slot 25, buckle

30, static contact piece 31, the first welding foot

32. Static contact 40, support piece

41. The second welding leg 42 and the positioning portion

50, moving contact piece 51, moving contact

52, the second hanging hole 60, the lower frame

61, the first crossbar 62, the first link

63. The first pivot shaft 64 and the second pivot shaft

65, the pivot hole 601, the first embedded slot

602, the second embedded slot 70, the upper frame

71, the second crossbar 72, the second link

73. The third pivoting shaft 74 and the fourth pivoting shaft

75. The sixth pivoting shaft 701, the first hanging hole

80, key cap 81, third pivot slot

82. The fourth pivoting groove 90 and the elastic member

91. The first hook portion 92 and the second hook portion

10', upper cover 11', buttonhole

12', positioning hole 13', pin.

detailed description

Please refer to FIG. 1 to FIG. 9 , which show a specific structure of the first preferred embodiment of the present invention, including a PCB board 10 , a base 20 , a static contact piece 30 , a support piece 40 , and a movable contact piece 50 . The lower frame 60, the upper frame 70, and the keycap 80.

The LED board 11 is disposed on the PCB board 10. The base body 20 is disposed on the PCB board 10. The base body 20 is provided with a notch 21, and the LED lamp 11 is located in the notch 21.

The static contact piece 30 and the support piece 40 are separately disposed on the base body 20, and the static contact piece 30 has a first welding leg 31 and a static contact 32. The support piece 40 has a second welding leg 41, and the second welding leg 41 and the first soldering leg 31 both extend outside the base 20 to be soldered to the PCB board 10 for electrical connection.

One end of the movable contact piece 50 is in electrical contact with the support piece 40. The other end of the movable contact piece 50 has a movable contact 51, and the movable contact 51 is located above the static contact 32.

The upper frame 70 and the lower frame 60 cross each other and can be pivotally connected together. The lower end of the upper frame 70 and the lower end of the lower frame 60 are respectively pivotally connected to the two ends of the base 20, and the upper and lower frames of the upper frame 70 are respectively The upper end of the 60 is pivotally connected to the bottom ends of the key cap 80, and the upper frame 70 and the lower frame 60 form an X-shaped structure to move the movable contact 50. When the upper frame 70 and the lower frame 60 are in a overlapping state, the movement is performed. The contact 51 is in electrical contact with the stationary contact 32, and the movable contact 50 is disposed on the elastic member 90 that causes the movable contact 50 to be reset such that the movable contact 51 leaves the stationary contact 32.

Specifically, in the embodiment, the lower frame 60 and the upper frame 70 are both U-shaped, and the lower frame 60 includes a first cross bar 61 and two first links 62, two of the first cross bars 61 The first pivoting shaft 63 is pivotally connected to the keycap 80. The two first connecting rods 62 are parallel to each other and integrally connected with the two ends of the first crossbar 61. The second pivot shaft 64 extends from the inner side of the tail end of the two first links 62, and the second pivot shaft 64 is pivotally connected to the base 20; the upper frame 70 includes a second crossbar 71 and two second The connecting rod 72, the two ends of the second crossbar 71 extend outwardly from the third pivoting shaft 73, and the third pivoting shaft 73 is pivotally connected to the keycap 80. The two second connecting rods 72 are parallel to each other and respectively The two ends of the second link 72 are integrally formed with the fourth pivot shaft 74. The fourth pivot shaft 74 is pivotally connected to the base 20, and two The second link 72 is respectively located on the inner side of the two first links 62. The middle portions of the two second links 72 are respectively pivotally connected to the middle portions of the two first links 62. In this embodiment, the second link is connected. The middle of the central part of the 72 extends outward with a sixth The pivoting shaft 75 is correspondingly disposed with a pivoting hole 65. The sixth pivoting shaft 75 is pivotally inserted into the pivoting hole 65.

A first insertion groove 601 is recessed in a front end surface of the first link 62, and a second insertion groove 602 is recessed in a front end of the first link 62. The first half of the second link 72 is overlapped. Partially embedded in the first embedding groove 601, the second half of the second link 72 is embedded in the second embedding groove 602 to make the product thinner.

The base body 20 is recessed with a cavity 22, two first pivoting slots 23 and two second pivoting slots 24, and the two first pivoting slots 23 and the two second pivoting slots 24 are distributed on the surface of the base 20. The second pivoting shaft 64 and the fourth pivoting shaft 74 are respectively engaged in the first pivoting slot 23 and the second pivoting slot 24, and the base 20 is disposed on the four corners. The cover 10 ′ is disposed in the first pivoting slot 23 and the second pivoting slot 24 respectively corresponding to the second pivoting shaft 64 and the fourth pivoting axle 74 , and the movable contact 50 is embedded in the concave The cavity 22 is located below the upper cover 10'. The two opposite side plates of the upper cover 10 ′ are respectively provided with a buckle hole 11 ′. correspondingly, the base body 20 is provided with a buckle portion 25 , and the buckle portion 25 and the buckle hole 11 ′ are fastened to each other, so that the upper portion is realized. The cover 10' is mounted on the base 20, and the top end of the support piece 40 has a positioning portion 42. The upper cover 10' is provided with a positioning hole 12', the positioning portion 42 is inserted into the positioning hole 12', and the upper portion The two side plates of the cover 10' also extend with pins 13' which are inserted into the PCB board 10 for soldering.

The bottom of the key cap 80 is provided with a third pivoting slot 81 and a fourth pivoting slot 82. The first pivoting shaft 63 and the third pivoting shaft 73 respectively engage with the third pivoting slot 81 and The fourth pivoting slot 82 is pivotally connected.

In this embodiment, the elastic member 90 is a tension spring, and the tension spring exposes the upper cover 10'. The two ends of the tension spring have a first hook portion 91 and a second hook portion 92, and the second frame portion The crossbar 71 is provided with a first hanging hole 701. The first hook portion 91 is fastened with the first hanging hole 701. The movable contact piece 50 is provided with a second hanging hole 52. The second hook portion 92 is connected to the second hook portion 92. Hole 52 is buckled.

In addition, the seat body 20 is embedded in the aforementioned X-shaped structure to make the product smaller in size.

During assembly, the static contact piece 30 and the support piece 40 are respectively placed from the top to the bottom of the socket 20 at corresponding positions. Then, the movable contact piece 50 is placed in the cavity 22, and the movable contact piece 50 is supported by the support. The upper frame 70 and the lower frame 60 are pivotally connected to each other, and the second pivoting shaft 64 and the fourth pivoting shaft 74 are respectively engaged with the first pivoting slot 23 and the second pivoting shaft. In the second pivoting groove 24, the first hook portion 91 of the tension spring is hooked with the first hanging hole 701, and the second hook portion 92 of the tension spring is hooked with the second hanging hole 52, and then, The upper cover 10' is fastened to the base 20 from the top, and then the keycap 80 is assembled, so that the first pivoting shaft 63 and the third pivoting shaft 73 are respectively engaged with the third pivoting slot 81 and the fourth. The pivoting groove 82 can be pivoted.

In use, when the key cap 80 is pressed, the upper frame 70 and the lower frame 60 are moved downward to be stacked together, and at the same time, the elastic member 90 is stretched, and the movable contact 50 is moved downward to make the movable contact 51 is in electrical contact with the stationary contact 32; when the keycap 80 is released, the elastic member 90 is restored to deformation, and under the action of the elastic member 90, the upper frame 70 and the lower frame 60 are opened upward, and the key cap 80 is upwardly reset. The movable contact piece 50 is also reset upward so that the movable contact 51 leaves the stationary contact 32.

Referring to FIG. 10, it shows a specific structure of the second preferred embodiment of the present invention. The specific structure of the present embodiment is basically the same as the specific structure of the foregoing first preferred embodiment, and the difference is:

In this embodiment, the elastic member 90 is a spring piece, and is integrally formed on the movable contact piece 50. The movable contact piece 50 is mounted and connected to the lower frame 60.

The assembly process and the use method of the present embodiment are the same as those of the foregoing first preferred embodiment. The assembly process and the use method of the present embodiment are not described in detail herein.

Referring to FIG. 11, the specific structure of the third preferred embodiment of the present invention is shown. The specific structure of this embodiment is basically the same as the specific structure of the foregoing first preferred embodiment, and the difference is:

The base 20 is located below the X-shaped structure, and both the upper frame 70 and the lower frame 60 extend upwardly beyond the upper cover 10'.

The assembly process and the use method of the present embodiment are substantially the same as those of the foregoing first preferred embodiment. The assembly process and the use method of the present embodiment are not described in detail herein.

The design focus of the present invention is to replace the traditional guide by using the upper frame and the lower frame to cross each other and being pivotally connected together, and the X-shaped structure is combined with the upper frame and the lower frame to drive the movable contact activity. The form of the column makes the overall thickness of the product thinner, and the upper frame and the lower frame can be linked to move the movable contact piece regardless of the position of the finger on any position of the keycap, thereby achieving stable pressing, so that the static contact piece and the static contact piece The conductive connection of the movable contact is more sensitive and the product is more convenient to use.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still It is within the scope of the technical solution of the present invention.

Claims

An ultra-thin keyboard switch comprising: a seat body, a static contact piece, a support piece, a movable contact piece, a lower frame, an upper frame and a key cap; the static contact piece and the support piece are separately arranged on the base body The static contact piece has a first soldering leg and a static contact, the supporting piece has a second soldering leg, and the second soldering leg and the first soldering leg respectively protrude from the outside of the body; the movable contact piece is kept in contact with the supporting piece at one end Electrically connected, the other end of the movable contact piece has a movable contact, and the movable contact is located above the static contact; the upper frame and the lower frame cross each other and can be pivotally connected together, the lower end and the lower frame of the upper frame The lower end is pivotally connected to the two ends of the base body, and the upper end of the upper frame and the upper end of the lower frame are respectively pivotally connected with the bottom ends of the key cap, and the upper frame and the lower frame form an X-shaped structure to drive the movable contact activity. When the frame and the lower frame are in a folded state, the movable contact is in electrical contact with the stationary contact, and the movable contact is disposed on the elastic member that causes the movable contact to be reset such that the movable contact leaves the stationary contact.
The ultra-thin keyboard switch according to claim 1, wherein the lower frame and the upper frame are both U-shaped, and the lower frame comprises a first cross bar and two first links, the first cross bar The first pivoting shaft is pivotally connected to the keycap, and the first pivotal links are parallel to each other and integrally connected with the two ends of the first crossbar, respectively. A second pivoting shaft extends from the inner side of the tail end of the connecting rod, and the second pivoting shaft is pivotally connected to the seat body; the upper frame includes a second crossbar and two second links, the second crossbar A third pivoting shaft extends from the two ends, the third pivoting shaft is pivotally connected to the keycap, and the two second links are parallel to each other and integrally connected with the two ends of the second crossbar, respectively. A fourth pivoting shaft extends from the inner side of the tail end of the connecting rod, the fourth pivoting shaft is pivotally connected to the seat body, and the two second connecting rods are respectively located on the inner side of the two first connecting rods, and the two second connecting rods respectively The middle portions are respectively pivotally connected to the middle portions of the two first links.
The ultra-thin keyboard switch according to claim 2, wherein the first end surface of the first connecting rod is concavely provided with a first embedding groove, and the inner side of the front end of the first connecting rod is concavely provided with a second embedding In the grooved state, the front half of the second link is embedded in the first embedded groove, and the second half of the second link is embedded in the second embedded groove.
The ultra-thin keyboard switch according to claim 2, wherein a second pivot shaft extends outwardly from a central portion of the second link, and correspondingly, the first link is provided with a pivot hole. The sixth pivot shaft is pivotally inserted into the pivot hole.
The ultra-thin keyboard switch according to claim 2, wherein the base body is recessed with a first pivoting slot and a second pivoting slot, and the second pivoting axle and the fourth pivoting axle respectively The corresponding card is embedded in the first pivoting slot and the second pivoting slot, and the base is provided with an upper cover, and the upper cover respectively limits the second pivoting axis and the fourth pivoting axis to the first pivoting In the slot and the second pivoting slot, the movable contact is located below the upper cover.
The ultra-thin keyboard switch according to claim 2, wherein the bottom of the keycap is provided with a third pivoting slot and a fourth pivoting slot, and the first pivoting axis and the third pivoting axis respectively The corresponding buckle is pivotally connected to the third pivoting slot and the fourth pivoting slot.
The ultra-thin keyboard switch according to claim 1, wherein the elastic member is a tension spring, and one end of the tension spring is hooked with the upper frame, and the other end of the tension spring is hooked with the movable contact piece.
The ultra-thin keyboard switch according to claim 1, wherein the elastic member is a spring piece integrally formed on the touch piece, and the movable contact piece is mounted and connected to the lower frame.
The ultra-thin keyboard switch according to claim 1, wherein the seat body is embedded in the X-shaped structure.
The ultra-thin keyboard switch according to claim 1, wherein the base body is located below the X-shaped structure.