JPH04101326U - keyboard switch - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce impact noise when the key top returns. A spacer serving as a buffer member is provided between a shoulder portion of a stem that moves a key top and a stopper portion that prevents movement of the stem. [Effect] When the key top returns, the movement of the stem is blocked by the spacer, which is a buffering member, so impact noise can be reduced.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a keyboard for keyboards widely used as information processing terminals. ・Regarding switches.

0002

[Conventional technology]

Figure 3 is a cross-sectional view of a conventional keyboard switch, and Figure 4 is a cross-sectional view of a keyboard switch shown in Figure 3. It is a front view. Conventionally, this type of keyboard switch is shown in FIGS. 3 and 4, for example. There is a key top 1 that you press with your finger, and a key that is located at the bottom of this key top 1. The integrated housing 3 and the square hole opening 3b of this integrated housing 3 are aligned vertically. The stem 2 slides on the mating portion 6, and the stem 2 contacts the end surface 2a of the stem 2. A rubber cup 4 installed at a position opposite to the stem 2, and this rubber cup A sheet-like pet assembly 8 that is placed over the 4 and has a contact function; Works with the body housing 3 to hold and hold the pet assembly 8 and rubber cup 4. It consists of a fix plate 5 with a

0003 Next, the operation of this keyboard switch will be explained. Figure 3 shows the switch in the ON state. It shows the status. When the switch is OFF, the pressing part of the rubber cup 4 is The stem 2 is raised away from the toe assembly 8, and the shoulder of the stem 2 is at the stopper part. It is in contact with 3a. First, when you press key top 1 with your finger, stem 2 will move to the integrated housing. It is guided to the mating part 6 of the square hole opening 3b of the ring 3 and is pushed vertically downward. Ru. As a result, the rubber cup 4 in contact with the end surface 2a of the stem 2 is deformed. The pressing portion 4a presses the contact point of the pet assembly 8. Pet assembly 8 connection The dot turns ON and sends a signal to the wiring connected to the pet assembly 8. key top 1 When released, the stem 2 is pushed back by the elasticity of the rubber cup 8, and the shoulder of the stem 2 is It hits the stopper part 3a and prevents the stem 2 from rising.

0004

[Problem that the idea aims to solve] In this conventional keyboard, the shoulder part of the stem 2 and the stopper part 3a of the square hole opening 4 are The initial state is determined by Because it is molded from a stick material, the impact noise when the key top 1 returns is loud, making it difficult to operate. There was a problem that it caused discomfort to the data.

[0005] The purpose of the present invention is to provide a keyboard switch that solves this problem. It is.

[0006]

[Means to solve the problem]

The keyboard of this invention has a key top that you press with your fingers, and a bottom part of this key top. The integrated housing located in the integrated housing and the square hole opening of this integrated housing A sliding stem and a part that contacts the pressing surface of this stem and faces the stem. A rubber cup is placed in the position where the rubber cup is placed, and a A sheet-like pet assembly with a contact function on the front and the integral housing are combined. a fixture that moves to sandwich and hold the pet assembly and the rubber cup; ・In a keyboard switch having a plate, the stem is used for pressing operation. When opened, the end surface of the stem opposite to the pressing surface and the integrated housing It is equipped with a buffer member to be sandwiched.

[0007]

【Example】

Next, the present invention will be explained with reference to the drawings.

[0008] FIG. 1 is a cross-sectional view of a keyboard switch showing an embodiment of the present invention, and FIG. FIG. 3 is a plan view of a rubber spacer. This keyboard switch is as shown in Figure 1. This is a buffer member sandwiched between the shoulder of the stem 2 and the stopper of the integrated housing. This is because the rubber spacer 7 is provided. Moreover, this rubber spacer 7 is shown in FIG. As shown in the figure, this is a rectangular cushioning material plate with square holes for escape. This buffer The material used is, for example, a material molded from rubber or plastic fiber.

[0009] Next, the operation of this keyboard switch will be explained. The state in Figure 1 is the switch indicates the OFF state. First, press key top 1 and stem 2 will descend. As a result, the rubber cup 4 in contact with the end surface 2a of the stem 2 is deformed, and the pressing part 4a presses the contact point of pet assembly 8. This generates a signal. Next, click - When you let go of the top 1, the rubber cup 4 restores itself, and the stem 2 pushes with its restoring force. When it is returned, the shoulder of the stem 2 hits the rubber space 7, preventing the stem 2 from rising. At this time, since the rubber spacer 7 is a cushioning material, it absorbs the impact sound with the shoulder of the stem 2. collect.

0010 As a result, with the conventional key top, the impact sound when the key top returns is 70%. According to this invention, what used to be ~80db can be reduced to 50-60db. was completed.

[0011]

[Effect of the idea]

As explained above, the present invention is designed so that the gap between the shoulder of the stem 2 and the stopper of the integral housing is A rubber spacer molded from an elastic material is provided on the stem to prevent the stem from returning. A keyboard that does not cause discomfort to the operator because it absorbs the impact sound caused by the noise. ・It has the effect of providing a switch.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a keyboard switch showing an embodiment of the present invention.

FIG. 2 is a plan view of the rubber spacer of FIG. 1;

FIG. 3 is a sectional view of a conventional keyboard switch.

FIG. 4 is a sectional view taken along line AA in FIG. 3;

[Explanation of symbols]

1 Key top 2 stem 2a End face 3 Housing 3a Stopper part 3b Square hole opening 4 Rubber cup 4a Pressing part 5 Fuchs plate 6 Mating part 7 Rubber spacer

Claims (1)

[Scope of utility model registration request] Claim 1: A key top to be pressed with a finger, an integrated housing located below the key top, a stem that slides in one direction through a square hole opening of the integrated housing, and a pressing surface of the stem. a rubber cup installed in a position facing the stem and in contact with the stem; a sheet-shaped pet assembly that is placed over the rubber cup and has a contact function; - In a keyboard switch having an assembly and a fix plate that sandwiches and holds the rubber cup, the stem is pinched between the end surface of the stem opposite to the pressing surface and the integrated housing when the pressing operation is released. A keyboard switch characterized in that it is provided with a shock absorbing member.