JPH1131277A - Keyboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exchange a keyboard unit from the surface side while ensuring the drop preventing performance of a keyboard. SOLUTION: A keyboard unit 3 whose upper face a water proof sheet is adhered to is mounted from the upper side on an opening provided on the upper face of a case 1 inclined so that the front side can be made lower. Then, a liquid tray 12 is integrally provided with the case at the lower side of the keyboard unit 3 in the case so that even when liquid such as juice spilled to the keyboard intrudes inside from a clearance between the keyboard unit 3 and the case 1, the liquid can be remained without being dropped. Also, a through- hole 15 for allowing a connection cable 10 to pass is provided at the rear edge part of the liquid tray, and a water wall 16 is provided like a bank in the surrounding of the through-hole 15. Moreover, a drain ditch 19 is horizontally provided at the rear side of the through-hole 15 of the case 1 so that liquid intruding from the upper part can be prevented from being dropped through the cable through-hole 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard having a drip-proof function, and more particularly to a keyboard suitable for a POS register.

[0002]

2. Description of the Related Art In a store such as a fast food store, which is based on face-to-face sales, products are usually delivered through a POS register. In such stores, many drinks in cups such as juice and coffee are sold, and when delivering such drinks, troubles such as spilling the drinks on the POS register often occur. Also,
Such a POS register is wiped with a wet cloth even during daily cleaning. Therefore, in a POS register used in such a store, it is strongly required that the POS register has a drip-proof structure centered on a keyboard.

FIG. 5 is an external view of a conventional POS register having a drip-proof function. In FIG. 5, reference numeral 1 denotes an upper case made of resin among two upper and lower cases of a keyboard, 2 denotes a lower case also made of metal, 3 denotes a keyboard unit having a product menu key 3A and a function key 3B, Reference numeral 4 denotes an operation display for displaying a product name, a price, a total amount, and the like in accordance with a key operation of the keyboard unit 3; 25, a mode selection key for selecting an operation mode; 26, a waterproof sheet; Mouth. Reference numeral 30 denotes a keyboard including the above components, 31 denotes a printer that prints out receipts and sales summary tables, and the like. 32
Denotes a cash drawer. The keyboard 30 and the printer 31 are placed side by side on the cash drawer 32 so as to be separable from each other.

FIG. 6 is a schematic internal view of a conventional POS register keyboard, and FIG. 7 is a top view thereof. Reference numerals 1 to 4, 25 and 26 correspond to those in FIG.
Reference numeral 5 denotes a customer display for displaying a product price, a total sales amount, and the like to a customer, 6 denotes a power supply unit that converts a commercial AC power into DC and supplies it to an internal circuit, and 7 denotes various types of signals from an external device. Lower case 2 for connecting the cable connector
, A connection space formed by recessing the bottom plate inside, 8 is a connector for connecting those cable connectors, 9 is a control circuit board, 10 is a connection cable, and 11 is a connection cable 10 to the keyboard unit 3. And 24 are keys of the keyboard unit 3. Normal,
The keys 24 are hidden under the key display sheet and are not directly visible from the surface. The internal wiring other than the connection cable 10 is omitted here.

A waterproof sheet 26 is provided on the upper surface of the upper case 1.
Is attached, so that even if liquid spills on the keyboard, it does not enter the inside of the keyboard and the keyboard unit 3. Since the waterproof sheet 26 is attached to the upper surface of the upper case 1 in this manner, the keyboard unit 3 cannot be attached from the front side, and is screwed from the inside of the upper case 1. I have. Although not shown, a RAM card inserted through a RAM card insertion slot 27 (FIG. 5) provided at an appropriate height on the side surface of the upper case 1 is provided on the upper surface of the rear end of the control circuit board 9. Connector is directly attached. The control circuit board 9 is provided obliquely with respect to the bottom surface because the connector needs to be aligned with the RAM card insertion slot 27 and the connection space 7 is secured. 1 through a spacer (not shown).

[0006] In such a POS register keyboard, keys are set for each product, and each key is pressed each time the corresponding product is sold. The keys of well-selling products are pressed more frequently, and the contacts are worn out more. Under such circumstances, in this type of POS register, the keyboard unit 3 is frequently replaced due to a failure.

[0007]

However, in the above-mentioned conventional drip-proof keyboard, a waterproof sheet 2 is provided on the surface.
6, the keyboard unit 3 is not configured to be attached and detached from the front side of the upper case 1. When the keyboard unit 3 is replaced, the keyboard body bottom plate is removed and control is performed. The replacement work must be performed after the circuit board 9 is removed, which is very troublesome.

As a means for solving this problem, a waterproof sheet is provided on the surface of the keyboard unit 3 to make the keyboard unit 3 itself drip-proof, and the keyboard unit 3 is connected to the upper case 1 and the keyboard unit 3 from above. It is conceivable that a packing is interposed therebetween and screws or the like are used.
By doing so, even if a liquid spills on the upper case 1, it can be prevented from entering the inside, and the keyboard unit 3 can be attached and detached from the front side, and the replacement work of the keyboard unit 3 becomes easy. However, in such a case, the spilled liquid accumulates between the packing, which is difficult to clean, and the upper case 1 and the keyboard unit 3, resulting in unsanitary and adversely affecting the keyboard unit 3. In addition, keyboard unit 3
There is a problem in that a set screw for fixing the fixing member is exposed on the surface, and dissatisfaction remains in appearance.

SUMMARY OF THE INVENTION The present invention solves such a problem and allows the keyboard unit to be attached and detached from the front side while ensuring the drip-proof performance of the keyboard.
Another object is to improve the appearance.

[0010]

According to a first aspect of the present invention, there is provided a keyboard unit having a waterproof sheet attached to an opening provided on an upper surface of a case which is inclined so that a front side thereof is lower. From the upper side, in the case below the keyboard unit,
Integrally with the case, a liquid tray is provided at an interval between the lower surface of the keyboard unit and inclined so that the front side is lower, and the keyboard unit and the control circuit board are connected to the rear end of the liquid tray. A through hole for passing a connection cable is provided, a waterproof wall is provided in a bank shape around the through hole, and a drain groove is provided in a lateral direction above the through hole of the case. In this way, the keyboard unit can be attached and detached from the front side while ensuring the drip-proof performance of the keyboard.

The keyboard according to a second aspect of the invention is characterized in that a drainage channel for discharging the liquid in the liquid receiving tray to the outside is provided at a front end of the liquid receiving tray. With this configuration, the liquid that has entered the liquid receiving tray is immediately discharged to the outside. The keyboard according to claim 3 is provided at a boundary between the keyboard unit and the case around the keyboard unit.
It is characterized in that a frame plate is covered from above. By doing so, even if the keyboard unit is screwed, the head of the screw can be hidden by the frame plate, and the appearance is improved. Further, the key display sheet of the keyboard unit can be sandwiched by using the frame plate.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic view showing the inside of a keyboard according to the present invention, and FIG. 2 is a top view thereof. Reference numerals 1 to 11,
4 and 25 correspond to those in FIGS. 6 and 7, 12 is a liquid pan,
Reference numeral 13 denotes a keyboard mounting step, 14 denotes a frame plate mounting step, 15
Is a cable through hole, 16 is a waterproof wall, 17 is a set screw, 1
8 is a frame plate, 19 is a drain groove, 20 is a drain passage, 21 is a spacer, 22 is a fixing plate, and 23 is a cutout.

In this keyboard, a RAM card connector (not shown) must be attached to the front end of the control circuit board 9 because the RAM card insertion slot is provided on the near side (operator side). 9 for lower case 2
Are provided in parallel to the bottom surface of the. The control circuit board 9
It is attached to the bottom plate of the lower case 2 with a spacer 21 interposed.

Further, the connection space 7 cannot be arranged below the control circuit board 9 like the conventional keyboard shown in FIG. 6 because the control circuit board 9 is mounted horizontally. Therefore, the connection space 7 is
The power supply unit 6 provided at the rear side is mounted on the top plate of the connection space 7. and again,
Since the connector 8 is directly attached to the control circuit board 9, an extra board for connecting the connector 8 is not required.

A liquid receiving tray 12 is provided integrally with the upper case 1 below the opening of the keyboard unit 3 in the upper case 1. The keyboard unit 3 has a waterproof sheet adhered to the upper surface, and the keyboard unit 3 having the drip-proof structure is formed around a mounting opening of the upper case 1. It is placed on the part 13 from above, and is fixed to the upper case 1 with a set screw 17. In this way, the keyboard unit 3 is attached from the front side of the upper case 1,
It can be removed.

However, in this state, the head of the set screw 17 is visible on the surface, which is not preferable in appearance. Therefore, the frame plate mounting step 14 is provided outside the keyboard mounting step 13, and the set screw 17 The frame plate 18 is fitted so as to cover the head. The frame plate 18 can also be used to sandwich a key display sheet for displaying keys of the keyboard unit 3. If you do that,
When the key setting is changed, the display sheet can be easily exchanged.

On the lower side of the keyboard unit 3,
A liquid receiving tray 12 is provided integrally with the upper case 1 so as to be spaced apart from the keyboard unit 3 in the up-down direction, so that liquid that has penetrated through the gap between the upper case 1 and the keyboard unit 3 can be removed. As a result, the liquid is prevented from dropping onto the control circuit board 9. However, the liquid pan 1
Since 2 is provided so as to block between the keyboard unit 3 and the control circuit board 9, it is necessary to provide a cable through-hole for passing a connection cable 10 connecting between them.
The cable through hole 15 is provided at the rear end of the liquid receiving tray 12. The reason why the cable through-hole 15 is provided at the rear end of the liquid receiving tray 12 is that the cable through-hole 15 is provided at the time of maintenance as shown in FIG.
When the upper case 1 is opened as shown in FIG. 3, a long connection cable 10 is required if the cable through hole 15 is located on the front side of the liquid receiving tray 12, but if the cable through hole 15 is located at the rear end, a short connection cable 10 is sufficient. It is.

When liquid such as juice spills on such a keyboard, the keyboard unit 3 itself is prevented from entering by a waterproof sheet adhered to the surface thereof. However, there is a possibility that liquid may enter through a gap between the upper case 1 and the keyboard unit 3. The liquid thus entered is received by the liquid receiving tray 12 and provided at the front end of the liquid receiving tray 12. The water is discharged from the drainage channel 20 to the outside.

On the other hand, the rear end of the cable through hole 15 is directly connected to the keyboard mounting step 13 as shown in FIG. At the rear end of 13, a drain groove 19 is provided. When juice or the like spills onto the upper case 1, it escapes laterally through the drain groove 19 and is guided to the liquid receiving tray 12, so that it does not flow toward the cable through-hole 15. . Further, the liquid tray 12
A waterproof wall 16 is provided around the cable through-hole 15 so as to prevent the liquid such as juice that has entered the cable through-hole 15 from entering the cable through-hole 15 from the side or the front side.

[0021]

Since the present invention is configured as described above, it has the following effects. That is, in the keyboard according to the first aspect, the keyboard unit having the waterproof sheet adhered to the upper surface is attached to the opening provided on the upper surface of the case from the upper side, so that the keyboard unit can be attached and detached from the front side. become. In addition, a waterproof sheet is attached to the upper surface of the keyboard unit, and a liquid pan is provided below the keyboard unit, so that the keyboard unit itself has drip-proof performance, and liquid invades from the gap in the keyboard unit mounting part. However, it is possible to prevent the internal circuit from being reached. Furthermore, since the waterproof wall is provided in the shape of a bank around the cable through hole, it is possible to prevent liquid from entering through the cable through hole.

In the keyboard according to the second aspect of the present invention, a drainage channel for discharging the liquid in the liquid receiving tray to the outside is provided at the front end of the liquid receiving tray. The liquid is discharged to the outside so that it does not accumulate in the liquid receiving pan.

The keyboard according to a third aspect of the present invention is characterized in that, at the boundary between the keyboard unit and the case,
Since the frame plate is covered from the upper side, even if the keyboard unit is screwed, the head of the screw can be hidden by the frame plate, and the appearance is improved. Further, the key display sheet of the keyboard unit can be sandwiched by using the frame plate.

[Brief description of the drawings]

FIG. 1 is an internal schematic view of a keyboard of the present invention.

FIG. 2 is a top view of the keyboard of the present invention.

FIG. 3 is a diagram showing a state in which an upper case is opened.

FIG. 4 is a partially enlarged view of an upper part of a cable through hole.

FIG. 5 is an external view of a conventional POS register having a drip-proof function.

FIG. 6 is an internal schematic diagram of a conventional POS register keyboard.

FIG. 7 is a top view of a conventional POS register keyboard.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Upper case 2 ... Lower case 3 ... Keyboard unit 4 ... Operation display 5 ... Customer display 6 ... Power supply unit 7 ... Connection space 8, 11 ... Connector 9 ... Control circuit board 10 ... Connection cable 12 ... Liquid Receiving tray 15 ... Cable through hole 16 ... Waterproof wall 17 ... Set screw 18 ... Frame plate 19 ... Drainage groove 20 ... Drainage channel 26 ... Waterproof sheet 30 ... Keyboard 31 ... Printer 32 ... Cash drawer

Claims (3)

[Claims] 1. A keyboard unit having a waterproof sheet attached to an upper surface thereof is mounted on an opening provided on an upper surface of a case inclined such that a front side is lowered, and a case is provided in the lower case of the keyboard unit. A liquid tray is provided so as to be spaced from the lower surface of the keyboard unit so as to be lower on the front side, and a connection for connecting the keyboard unit and the control circuit board to the rear end of the liquid tray. A keyboard having a through hole for passing a cable, a waterproof wall provided in a bank shape around the through hole, and a drain groove provided in a lateral direction above the through hole of the case. 2. The keyboard according to claim 1, wherein a drainage channel for discharging the liquid in the liquid receiving tray to the outside is provided at a front end of the liquid receiving tray. 3. The keyboard according to claim 1, wherein a frame plate is placed from above on a boundary between the keyboard unit and the case.