TWM518360U - Keyboard circuit board module - Google Patents

Description

Keyboard circuit board module

The present invention relates to a keyboard, and more particularly to a keyboard circuit board module for a computer.

Referring to FIG. 1 , a keyboard 1 for a notebook computer mainly includes a bottom plate 11 , a plurality of buttons 12 disposed on the bottom plate 11 , and a thin film circuit board 13 disposed between the bottom plate 11 and the buttons 12 . . The buttons 12 are respectively disposed on the bottom plate 11 so as to be movable up and down through an interlocking mechanism 14 disposed between the base plate 11 and an elastic member 15 (see FIG. 2). The circuit board 13 is formed with a line unit 131. The line unit 131 has a plurality of switch contact groups 132 that are respectively turned on by the buttons 12, and the lines of the line unit 131 are collected in one place. A first cable 16 is connected to a signal conversion circuit board 17. The signal conversion circuit board 17 is further connected to a host computer system (not shown) via a second cable 18. Referring to FIG. 2, the signal conversion circuit board 13 is formed by folding the first cable 16 so that the signal conversion circuit board 17 is stacked on the bottom surface of the bottom plate 11 for assembly work of the keyboard 1 in the notebook computer.

Since the current notebook computer is moving toward a thinner and lighter direction, the configuration of the first cable 16 that is bent outside the keyboard 1 and the signal conversion circuit board 17 that is positioned on the bottom surface of the bottom plate 11 are not only configured. It will further increase the overall thickness of the notebook, and it will further reduce the installation space of other computer components. Therefore, a thin keyboard is disclosed, such as the keyboard disclosed in Patent No. I252418 and Publication No. 201530587, which is obtained by reducing the volume of the signal conversion circuit board and directly converting the signal conversion circuit board. Provided on the thin film circuit board to electrically connect the circuit unit, thereby eliminating the first line configuration that is bent outside, and hiding the signal conversion circuit board on one of the buttons and the thin film circuit board The space between the people is effective to thin the overall thickness of the keyboard.

Although the thinned keyboard can effectively reduce the overall thickness of the notebook after assembly, the signal conversion circuit board disposed between one of the buttons and the thin film circuit board is easily interfered with the button and the thin film circuit. The interlocking structure between the boards is actuated, and when the interlocking structure or the button is actuated, the thin film circuit board is also easily damaged by the interlocking structure or the touch of the button.

Therefore, the purpose of the present invention is to provide a thinned keyboard circuit board module that does not interfere with button operations.

Therefore, the keyboard circuit board module of the present invention comprises a bottom plate, a button group, a film circuit board, and at least one electrical connector.

The bottom plate includes at least one perforation.

The button set includes a plurality of buttons that are vertically movable to the bottom plate.

The thin film circuit board is disposed between the bottom plate and the button group, and includes a portion of the conductive circuit unit located inside, and at least one disposed groove recessed from the bottom surface. The conductive line unit has at least one junction end group exposed to the bottom of the installation groove. The setting groove communicates with the provided through hole and cooperates with the provided through hole to form an accommodating space.

The electrical connector includes an input terminal group and an output terminal group disposed in the accommodating space and electrically connected to the junction end group.

The function of the present invention is that the accommodating space formed by the bottom surface of the bottom plate facing the thin film circuit board is used for the electrical connection member to be accommodated, and at the same time, the input end group of the electrical connector can be directly connected with The electrical connection of the junction end group not only makes the overall thickness of the keyboard circuit board module only the total thickness of the bottom plate, the thin film circuit board and the button group, thereby facilitating the overall thickness of the keyboard circuit board module. Thinning, and the electrical connector does not interfere with the buttons or other moving parts of the keyboard circuit board module, thereby avoiding adverse effects on the functional operation of the keyboard circuit board module.

2‧‧‧floor

21‧‧‧Setting perforations

3‧‧‧ button group

31‧‧‧ button

4‧‧‧Film board

41‧‧‧Conducting line unit

43‧‧‧First diaphragm

44‧‧‧ spaced diaphragm

441‧‧‧Set perforation

442‧‧‧Contact perforation

45‧‧‧second diaphragm

451‧‧‧Setting perforation

411‧‧‧Switch contact group

412‧‧‧ tandem group

413‧‧‧First conductive line

414‧‧‧Second conductive line

42‧‧‧Setting slot

5‧‧‧Electrical connectors

51‧‧‧Input group

52‧‧‧Output group

6‧‧‧ accommodating space

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is an exploded perspective view of a conventional keyboard; FIG. 2 is a partial cross-sectional view of the keyboard; 3 is a top plan view showing the component composition of an embodiment of the keyboard circuit board module and the position of an electrical connector; FIG. 4 is a schematic cross-sectional view showing a bottom plate and a film of the embodiment. The structural aspect of the circuit board and the relationship with the electrical connector; FIG. 5 is a top plan view showing the number of electrical connectors of the keyboard circuit board module of the present invention being two and located in a button group Below the interval; and FIG. 6 is a top plan view showing the number of the electrical connectors of the keyboard circuit board module of the present invention being two and located below one side of the button group.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 3 and FIG. 4, an embodiment of the keyboard circuit board module of the present invention comprises a bottom plate 2, a button group 3, a film circuit board 4, and an electrical connector 5.

The bottom plate 2 includes a through hole 21.

The button group 3 includes a plurality of buttons 31 disposed on the bottom plate 2. The buttons 31 are respectively disposed on the bottom plate 2 so as to be movable up and down through an interlocking mechanism (not shown) disposed between the bottom plate 2 and the bottom plate 2 and an elastic member (not shown). However, the structural relationship of the above-mentioned linkage mechanism and the elastic member, and the connection relationship between the two and the buttons 31 and the bottom plate 2 are conventional techniques, and are not the technical focus of the present invention, and will not be further described herein.

The thin film circuit board 4 is disposed between the bottom plate 2 and the button group 3, and includes a portion of the conductive line unit 41 located inside and a receiving groove 42 recessed from the bottom surface. The conductive line unit 41 has a plurality of switch contact groups 411 that are respectively turned on by the buttons 31, and a junction end group 412 exposed at the bottom of the set groove 42. The installation groove 42 is correspondingly connected to the provided through hole 21 of the bottom plate 2, and the installation groove 42 cooperates with the provided through hole 21 of the bottom plate 2 to form an accommodation space 6. The accommodating space 6 is located below one of the buttons 31.

In this embodiment, the thin film circuit board 4 further includes a first diaphragm 43 , a spacer diaphragm 44 and a second diaphragm 45 which are sequentially stacked by the button group 3 toward the bottom plate 2 . The spacer film 44 and the second diaphragm 45 respectively have a through hole 441, 451, and the through hole 441 of the spacer film 44 communicates with the upper and lower corresponding holes 451 of the second film 45. The arrangement groove 42 is formed in cooperation. The conductive line unit 41 further has a first conductive line 413 formed on a bottom surface of the first diaphragm 43 and a second conductive line 414 formed on a top surface of the second diaphragm 45. The first conductive line The path 413 has one of the junctions 412 and the two opposite contacts of the switch contact group 411. The second conductive line 414 has the other of the two opposite contacts of each of the switch contact sets 411. However, the spacer film 44 also has a plurality of contact vias 442 respectively located between the opposite contacts of the switch contact groups 411, whereby the switch contact groups 411 are respectively pressed by the buttons 31. The two contacts of the switch contact group 411 can be electrically connected to each other through the contact vias 442.

The electrical connector 5 is disposed in the accommodating space 6, and the electrical connector 5 includes an input end group 51 located in the accommodating space 6 and electrically connected to the gang end group 412, and an electrical connection host computer system. Output group 52 (not shown). In this embodiment, the electrical connector 5 is a signal conversion chip, and the output terminal group 52 is electrically connected to the computer host system through a wire (not shown).

It is to be noted that the electrical connector 5 can also be a flexible flexible circuit board, and the input terminal group 51 is located in the accommodating space 6 to electrically connect the junction end group 412, and the output end The group 52 is protruded outside the accommodating space 6 to electrically connect to the computer host system. Moreover, referring to FIG. 5 and FIG. 6 , the number of the electrical connectors 5 of the keyboard circuit board module is not limited to the above one, and may be correspondingly changed according to the number of the junction end groups 412 of the conductive line unit 41. There may be two or more, and the number of the accommodation spaces 6 of the keyboard circuit board module also changes correspondingly. In addition, the setting position of the accommodating space 6 of the keyboard circuit board module is not limited to the above, and may be located below the interval between the buttons 31 (see FIG. 5), or at the button group 3 Below one side (see Figure 6).

According to the above description, the accommodating space 6 formed by the bottom surface of the bottom plate 2 facing the thin film circuit board 4 is used for the electrical connection member 5 to be accommodated, and at the same time, The input terminal group 51 of the electrical connector 5 is directly electrically connected to the junction terminal group 412, so that the overall thickness of the keyboard circuit board module is only the thickness of the bottom plate, the thin film circuit board and the button group. Therefore, the overall thickness of the keyboard circuit board module is thinned, and the electrical connector 5 does not interfere with the buttons 31 or other movable parts of the keyboard circuit board module, thereby avoiding the keyboard circuit. The function of the board module has an adverse effect, so it can achieve the purpose of this new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧floor

3‧‧‧ button group

31‧‧‧ button

4‧‧‧Film board

41‧‧‧Conducting line unit

411‧‧‧Switch contact group

412‧‧‧ tandem group

442‧‧‧Contact perforation

5‧‧‧Electrical connectors

6‧‧‧ accommodating space

Claims (6)

A keyboard circuit board module comprising: a bottom plate comprising at least one set of perforations; a button set comprising a plurality of buttons arranged to move up and down on the bottom plate; a thin film circuit board disposed between the bottom plate and the button group And including a part of the inner conductive circuit unit and at least one of the bottom recessed inwardly disposed groove, the conductive circuit unit having at least one junction end group exposed at the bottom of the set groove, the set groove communicating with the set through hole and The through hole is configured to form an accommodating space; and the at least one electrical connector includes an input end group and an output end group disposed in the accommodating space and electrically connected to the splicing end group. The keyboard circuit board module of claim 1, wherein the thin film circuit board further comprises a first diaphragm, a spacer film and a second film which are sequentially superposed by the button group toward the bottom plate. The spacer film and the second film respectively have at least one through hole, and the spacer film and the second film are provided with perforations and cooperate to form the installation groove, and the conductive circuit unit further has a a first conductive line formed on a bottom surface of the first diaphragm and having the junction end group, and a second conductive line formed on a top surface of the second diaphragm. The keyboard circuit board module of claim 1 or 2, wherein the accommodating space is located below one of the keys. The keyboard circuit board module of claim 1 or 2, wherein the accommodating space is located below the interval between the keys. The keyboard circuit board module of claim 1 or 2, wherein the accommodating space is located below one of the button groups. The keyboard circuit board module of claim 1 or 2, wherein the electrical connector is a signal conversion chip and is disposed in the accommodating space.