JP5334376B2 - keyboard - Google Patents

Description

  The present invention relates to a key switch device that is operated to make a keystroke, and more particularly to a key switch device that is preferably used in a keyboard that is an input device of an electronic apparatus. Furthermore, the present invention relates to a keyboard provided with such a key switch device.

  2. Description of the Related Art Conventionally, a key switch device including a key top having a rectangular key-pressing surface includes a plurality of wire-shaped link members or a pair of existing link members (Patent Document 1) in order to prevent bending and rotation. Etc.).

JP 2006-049274 A

  If it is a key switch device of the type which has a base panel on the membrane sheet switch currently disclosed by patent document 1, the wire-like link extended substantially parallel to the longer side of the rectangular key-pressing surface of a key top A plurality of members can be provided, and corresponding guide holes can be provided in the base panel. However, in the key switch device provided with a membrane sheet switch on the base, which is also disclosed in Patent Document 1, a large number of holes are already opened on the base. Difficult from problems. Further, when a plurality of existing pair of link members disclosed in Patent Document 1 are arranged in the key top, it is necessary to engage the gear for each pair of link members, When attaching to a pair of link members, there was a possibility of damaging a gear.

An object of the present invention is to provide a key switch device having a key-top with a rectangular key-pressing surface, having a simple structure, preventing deflection of the key-top when the key-top is depressed, An object of the present invention is to provide a key switch device that can suppress the above-mentioned problem.

  In order to achieve the above object, according to the present invention, a key switch device having the following characteristics and a keyboard including the same are provided.

According to a first aspect of the present invention, a key top disposed on the base and having a rectangular keystroke surface having a pair of long sides and a pair of short sides is interlocked with each other, and the key top is moved up and down on the base. A key switch device comprising: a pair of link members for guiding and supporting; and a switch mechanism for opening and closing a contact of an electric circuit in response to a lifting operation of the key top, wherein the pair of link members are the keystrokes of the keytop. Each of the pair of link members has three or more gears that mesh with each other, and each of the pair of link members includes an arm portion and an arm portion. with the end portion having the base and slidably connected by separate the sliding portion 3 or more was in one of the key top, in the middle position of one end of the arm portion, the other end the sliding Part Has at least one connecting portion connected to the arm portion adjacent through either one of the base and the key top of the connection counterpart of the sliding portion is engaged slidably in the sliding portion There are three or more sliding engagement portions, and each of the pair of link members has three or more rotation portions that are rotatably connected to the other one of the key top and the base. One of the key top and the other of the base as an engagement partner of the moving part has three or more rotating engaging parts that are rotatably engaged with the rotating part, and the key switch device. Has another link member, and the other link member is provided on the base and a rotation portion that is rotatably engaged with a plurality of rotation engagement portions provided on the key top. A pair of sliding portions that slidably engage with the pair of sliding engagement portions. And features.

  According to a second aspect of the present invention, the key switch device according to the first aspect is provided.

In the invention of claim 1, the pair of link members has three or more gears that mesh with each other, and each of the pair of link members slides on one of the base and the key top. A sliding mechanism that has three or more sliding parts that are freely connected, and in which either the base or the key top of the sliding part is slidably engaged with the sliding part. There are three or more joint portions, and each of the pair of link members has three or more pivot portions that are rotatably connected to the other one of the key top and the base. Since the key top of the mating partner and the remaining one of the base each have three or more pivotal engaging portions that are pivotably engaged with the pivoting portion, the key top is pressed while having a simple structure. Prevents key top deflection at times It is possible to suppress the rotation deflection width of flops.

According to the second aspect of the present invention, since the key switch device according to the first aspect of the present invention is provided, there is provided a keyboard capable of preventing the key top from being bent when the key top is pressed and suppressing the rotational swing width of the key top. Can be provided.

  1A is a plan view of the key switch device 101 according to the first embodiment of the present invention. FIG. 1B is a cross-sectional view taken along the line AA in FIG. ) Shows a BB cross-sectional view of FIG. FIG. 2 is an exploded perspective view of the key switch device according to the first embodiment of the present invention, and FIG. 3 is a perspective rear view of the key top 2.

The key switch device 101 includes a base 1, a key top 2 having a rectangular keystroke surface having a pair of long sides and a pair of short sides arranged on the base 1, and the key top 2 in conjunction with each other. A pair of link members 3 that guide and support the base 1 in the up-and-down direction, and a switch mechanism 5 that opens and closes the contact 17 of the electric circuit corresponding to the up-and-down operation of the key top 2 are provided. The pair of link members 3 are respectively disposed along the pair of long sides of the keystroke surface of the key top 2. The pair of link members 3 have three or more gears 6 that mesh with each other. Further, each of the pair of link members 3 has three or more sliding portions 9 that are slidably connected to either the base 1 or the key top 2 (in the figure, the pair of link members 3). And each of the base 1 and the key top 2 to which the sliding part 9 is connected is slid on the sliding part 9. There are three or more sliding engagement portions 10 that are movably engaged. (In the figure, the base 1 has a sliding engagement portion 10) Each of the pair of link members 3 is rotatably connected to the key top 2 and the remaining one of the base 1. In addition to having three or more moving parts 7 (in the figure, each of the pair of link members 3 has a rotating part 9 connected to the key top 2), the engaging part of the rotating part 7 described above One of the key top 2 and the remaining one of the base 1 has three or more rotation engaging portions 8 that are rotatably engaged with the rotation portion 7. (In the figure, the key top 2 has the rotation engaging portion 8). This prevents the key top from being bent when the key top is pressed while having a simple structure. The width can be suppressed .

Each of the pair of link members 3 has a sliding portion 9 connected to the key top 2, the key top 2 has a corresponding sliding engagement portion 10, and each of the pair of link members 3 has a base. 1 may have a rotating part 7 connected to the base 1, and the base 1 may have a corresponding rotating engaging part 8.

In this embodiment, the key top 2 is further provided with another link member 4 that prevents the key top 2 from being bent and rotated. The other link member 4 is slidably engaged with a rotation portion 14 that is rotatably engaged with the rotation engagement portion 13 of the key top 2 and a sliding engagement portion 15 of the base 1. Part 16. By combining the pair of link members and the other link members 4, it is possible to further prevent the key top from being bent when the key top is pressed down and to suppress the rotational deflection width of the key top.

FIG. 4 shows a keyboard 1001 having the key switch device 101 of the first embodiment of the present invention. The keyboard 1001 has a key switch device 101. Accordingly, it is possible to provide a keyboard capable of preventing the key top from being bent when the key top is pressed and suppressing the rotational swing width of the key top.

Fig. (A) is a plan view of the key switch device 101 of the first embodiment of the present invention, Fig. (B) is a cross-sectional view taken along line AA in Fig. (A), and Fig. (C) is It is BB sectional drawing of a figure (a). It is a perspective exploded view of the key switch device of a first embodiment of the present invention. 3 is a perspective rear view of the key top 2. FIG. It is a figure which shows the keyboard which has the key switch apparatus of 1st embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Key top 3 A pair of link member 4 Other link members 5 Switch mechanism 6 Gear 7 Rotating part 8 Rotating engaging part 9 Sliding part 10 Sliding engaging part 11 Rubber dome 12 Membrane sheet switch 14 Rotating Part 15 Sliding engagement part 16 Sliding part 17 Contact

Claims (2)

A base, a key top that is disposed on the base and has a rectangular keystroke surface having a pair of long sides and a pair of short sides, and a pair that guides and supports the key top on the base in the ascending / descending direction. A key switch device comprising: a link member; and a switch mechanism that opens and closes a contact of an electric circuit in response to the lifting operation of the key top.
The pair of link members are respectively disposed along the pair of long sides of the keystroke surface of the key top,
The pair of link members has three or more gears that mesh with each other,
Each of the pair of link members includes three or more arm portions and three or more independent sliding portions that are slidably connected to one of the base and the key top at the end portions of the arm portions , One end has an intermediate position of the arm portion, and the other end has at least one connecting portion connected to the adjacent arm portion via the sliding portion, and the base and the key top of the connecting portion of the sliding portion are connected . Either one has three or more sliding engagement portions that are slidably engaged with the sliding portions,
Each of the pair of link members has three or more rotating parts that are rotatably connected to the key top and the remaining one of the base, and the key top and the engaging partner of the rotating part The remaining one of the base has three or more rotation engaging portions that are rotatably engaged with the rotation portion,
Furthermore, the key switch device has another link member,
The other link member is slidably engaged with a rotation portion that is rotatably engaged with a plurality of rotation engagement portions provided on the key top, and a pair of sliding engagement portions provided on the base. A key switch device comprising a pair of sliding portions that are movably engaged.   A keyboard comprising the key switch device according to claim 1.

Images