JPS6320027Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a waterproofing device for office machines, and relates to a waterproofing device for the surface of a keyboard with a key switch in general office machines such as cash registers. .

(Prior Art) Conventionally, most of the waterproof structures for the keyboard surface of office machines, as described in, for example, Japanese Utility Model Application Publication No. 50-137562, involve covering the keyboard surface with a transparent and flexible waterproof cover. is taken. However, while this structure is not effective in waterproofing the push-button key portion, the key switch portion is completely defenseless because the keyhole is exposed. Therefore, a structure has been adopted in which the key switch is removed from the keyboard and mounted horizontally in a position where water does not get in, for example, on the front of the housing, but this poses a problem in terms of operability.

Furthermore, as described in Japanese Utility Model Publication No. 32-6427, the groove exposed on the top of the lock body into which the key is inserted is covered with a waterproof cap, so that when the key is inserted into the keyhole, the key is waterproof. A waterproof device for a switch is known in which a cover portion that covers a cap is integrally formed.

(Problem to be solved by the invention) Even if the waterproof device for the switch described in the above-mentioned Japanese Utility Model Publication No. 32-6427 is used for the keyboard, the waterproof cap that covers the keyhole of the lock does not fit over the key rotation shaft. Therefore, water droplets flowing on the keyboard may enter the keyboard through the exposed part of the keyhole formed on the keyboard, and furthermore, when the key is not inserted into the keyhole, there is a risk that water droplets may flow in through the grooves in the waterproof cap. be. Furthermore, even when the key is inserted into the keyhole of the lock, the cover portion of the key only covers the rotating portion of the lock, resulting in the problem that water droplets may flow in from the keyhole exposure hole of the keyboard.

This invention was created in view of the above problems.
An object of the present invention is to provide a waterproofing device for an office machine that can ensure waterproofing of a key switch part provided on a keyboard surface when a key is inserted into the keyhole of the key switch exposed on the keyboard and when the key is not pushed in. It is something to do.

[Structure of the idea]

(Means for Solving the Problems) The waterproofing device for office machines of the present invention has a pushbutton key and a keyhole of a key switch for inserting a key into a keyboard provided in a casing, each of which is exposed to the outside of the casing. In a waterproofing device for an office machine, the waterproofing device is provided for an office machine in which the exposed part of the key switch of the keyboard except for the keyhole part is covered with a waterproof cover made of an elastic material. a waterproof wall is integrally formed with the waterproof cover, a first lid body that is fitted into the waterproof wall and covers an upper opening of the waterproof wall is integrally provided so as to be openable and closable, and the key is inserted into the keyhole. The device is characterized in that a second lid body is provided which fits into the waterproof wall and covers the upper opening of the waterproof wall when the waterproof wall is inserted into the waterproof wall.

(Function) When the waterproof device for office machines of the present invention is not inserted into the keyhole of the key switch, the top opening of the waterproof wall to which the first lid is fitted is covered. Water flowing on the surface of the waterproof cover is prevented from entering the interior by the waterproof wall, and flying water droplets are prevented from entering the interior by the first lid body.

Furthermore, when the key is inserted into the keyhole of the key switch, the lid is open, but the exposed keyhole covers the upper opening of the waterproof wall into which the second lid of the key is fitted. Prevents water droplets from entering.

(Example) The configuration of an example of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a housing having a window hole 2 formed in its front inclined wall 1a, and a keyboard 3 provided inside. This keyboard 3 has a keyboard cover 8 attached to the window hole 2, and is provided with a plurality of push button keys 4 and a key switch 5 provided on the keyboard 3. are exposed to the outside through openings 6 and 7 formed in the keyboard cover 8. An engagement groove 9 that fits into the window hole 2 is formed on the outer periphery of the keyboard 8.
A periphery of a waterproof cover 10 molded from transparent rubber that covers the surface of the keyboard cover 8 is sandwiched between the engagement groove 9 and the periphery of the window hole 2 of the housing 1 . This waterproof cover 10 is formed with a bulge 11 that follows the shape of the button at a position corresponding to the push button key 4, and around the keyhole 5a of the key switch 5 as shown in FIG. A waterproof wall 12 that stands up integrally in an annular shape and whose upper edge is bent inward, and a waterproof wall 12 that fits into the outer periphery of the waterproof wall 12 and has a part of its lower end integrated with the waterproof cover 10. A first lid body 13 that is fitted into the waterproof wall 12 and covers the upper opening of the waterproof wall 12 is provided.

Further, FIG. 3 shows a key 14 inserted into the keyhole 5a of the key switch 5. This key 14 has a cut groove 14b formed at the base end of a key portion 14a inserted into the keyhole 5a, which is fitted into the waterproof wall 12. A second lid 15 is provided to cover the upper opening of the housing 12 .

Next, the operation of this embodiment will be explained.

When the key 14 is not inserted into the keyhole 5a, the first lid 13 is fitted onto the waterproof wall 12 and always covers the opening on the upper surface of the waterproof wall 12, as shown in FIG. Therefore, water flowing on the surface of the waterproof cover 10 is prevented from entering the interior by the waterproof wall 12, and flying water droplets are prevented from entering the inside by the first lid body 13.

On the other hand, when using the key 14 by inserting it into the keyhole 5a, as shown in FIG. Since the second lid 15 is fitted into the waterproof wall 12, the waterproof wall can be held in the same manner as above.

[Effect of idea]

According to the present invention, when the key is not inserted into the keyhole of the key switch, the first lid body is fitted into the waterproof wall and can close the upper opening of the waterproof wall,
The water flowing on the surface of the waterproof cover can be prevented from entering the keyhole by the waterproof wall, and the splashing water droplets can be prevented from entering the keyhole by the first lid, so the relatively simple structure is effective in preventing water from entering the keyhole of the key switch. can be prevented from
In addition, even when the first cover is opened and the key is inserted into the keyhole of the key switch, the second cover fits into the waterproof wall and the upper opening of the waterproof wall can be closed, so the keyhole can be inserted into the keyhole. This effectively prevents water from entering.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the keyboard of an office machine showing an embodiment of the present invention, Fig. 2 is a perspective view of the upper lid portion of the same, Fig. 3 is a front view of the same key, and Fig. 4 is a cross-sectional view of the same key. FIG. 3 is a cross-sectional view of the keyboard section in a closed state. 1... Housing, 3... Keyboard, 4... Push button key, 5... Key switch, 5a... Keyhole, 10...
Waterproof cover, 12...waterproof wall, 13, 15...lid, 14...key.

Claims (1)

[Scope of Utility Model Registration Claim] A keyhole for a push button key and a key switch for inserting a key into a keyboard provided in a housing, each of which is exposed to the outside of the housing, excluding the keyhole portion of the key switch of the keyboard. In a waterproofing device for an office machine in which an exposed part is covered with a waterproof cover made of an elastic material, a waterproof wall is integrally formed by rising up in an annular shape around the exposed part of the key switch of the waterproof cover, and the waterproof cover is covered with a waterproof cover made of an elastic material. A first lid body that is fitted into the waterproof wall and covers an upper opening of the waterproof wall is integrally provided so as to be openable and closable, and when the key is inserted into the keyhole, the first lid body is fitted into the waterproof wall. A waterproofing device for an office machine, characterized in that a second lid body is provided to cover the upper opening of the waterproofing wall.