JPH0530989U - Electronics - Google Patents

Abstract

(57) [Summary] [Purpose] The key input section and the display section are separate units, and these units are fixed to the lower case with a single screw. [Structure] The key input unit 4 has an engagement protrusion 23,
When 24 is engaged with the engaging recesses 11 and 12 of the lower case 3, it is attached to the front part on the lower case 3. When the engagement protrusion 33 of the display unit 5 is engaged with the engagement protrusion 14 of the lower case 3, the display unit 5 is attached to the rear right side of the lower case 3. In the auxiliary cover 7, the engagement protrusion 52 is engaged with the engagement protrusion 32 of the display unit 5, and the engagement protrusion 51 is inserted into the large hole portion on the left side of the engagement hole 26 of the key input unit 4. Then, by sliding to the right, the engaging projection 51 is engaged with the small hole on the right side of the engaging hole 26 of the key input unit 4, and then the screw of the lower case 3 is inserted through the screw insertion hole 54. When the screw 55 is screwed into the mounting hole 13, it is fixed to the lower case 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device such as an electronic cash register.

[0002]

[Prior Art]

 For example, in an electronic cash register, an upper case is mounted on a lower case equipped with a printer, a key input section is provided in the front of the upper case, and a display section is provided on the rear right side of the upper case. Some printers have a structure with a printer cover on the left side of the rear of the upper case. In this case, the upper case is attached to the lower case with a plurality of screws.

[0003]

[Problems to be solved by the device]

 However, in such a conventional electronic cash register, the upper case is attached to the lower case with multiple screws, so when disassembling for repairs, all of the multiple screws must be removed or attached. It is troublesome, and since the key input part and the display part are provided on the upper case, it will be disassembled entirely when repairing either the key input part or the display part. In addition, it is inefficient, and when changing the type of either the key input part or the display part according to the user's request, for example, the upper case equipped with the key input part and the display part is changed, There was a problem that it became a big deal.

The cause is that the upper case having the key input section and the display section is attached to the lower case by a plurality of screws. If the key input section and the display section are separate units and these units can be attached to the lower case without using screws, disassembly for repairs etc. can be done easily and efficiently. If the model of either the key input unit or the display unit is changed, only that unit can be changed. An object of this invention is to make the key input section and the display section separate units and to be able to attach these units to the lower case without using screws.

[0005]

[Means for Solving the Problems]

 The means of this invention are as follows. (1) A lower case having a key input unit engaging portion, a display unit engaging portion, and a printer cover engaging portion. For example, in the lower case of an electronic cash register, the key input unit engaging part is provided at the front end and the central part, the display unit engaging part is provided at the rear end right side, and the rear end part is provided. A printer cover engagement portion is provided on the left side. (2) It has a lower case engaging part, and is attached to the front part on the lower case with the lower case engaging part engaged with the key input unit engaging part of the lower case. Key input unit. For example, in a key input unit of an electronic cash register, a lower case engaging portion is provided at a front end portion and a rear end portion, and the lower case engaging portion is engaged with the lower case key input unit engaging portion. It is attached to the front part on the lower case while being engaged with the part. (3) Attaching to the rear right side or left side on the lower case, with the lower case engaging section engaged with the display unit engaging section of the lower case. Display unit. For example, in a display unit of an electronic cash register, a lower case engaging portion is provided at a rear end, and the lower case engaging portion is engaged with the display unit engaging portion of the lower case. In this state, it is attached to the rear right side of the lower case. (4) Attach to the left side or right side of the rear part on the lower case with the lower case engaging part engaged with the printer cover engaging part of the lower case. Printer cover. For example, in a printer cover of an electronic cash register, a lower case engaging portion is provided at a rear end portion, and the lower case engaging portion is engaged with the printer cover engaging portion of the lower case. In this state, it is attached to the rear left side on the lower case.

[0006]

[Action]

 The operation of this device is as follows. The key input unit is attached to the front portion on the lower case with the lower case engaging portion engaged with the key input unit engaging portion of the lower case. The display unit is attached to the rear right side or the left side on the lower case with the lower case engaging portion engaged with the display unit engaging portion of the lower case. The printer cover is attached to the rear left side or right side of the lower case with the lower case engaging part engaged with the printer cover engaging part of the lower case. Therefore, the key input section and the display section are separate units, and these units can be attached to the lower case without using screws.

[0007]

【Example】

 1 and 2 show an electronic cash register of one embodiment. This electronic cash register 1 has a structure including a cash drawer 1 and an electronic cash register body 2 mounted on the cash drawer 1. The electronic cash register main body 2 includes a lower case 3, a key input unit 4, a display unit 5, a printer cover 6, an auxiliary cover 7, and the like.

Although only the left side is illustrated, first engaging recesses 11 for the key input unit are provided at predetermined three positions on the left and right sides and the center of the front end of the lower case 3. Although only the right side is shown at predetermined two positions on the left and right of the center of the lower case 3, a second engaging recess 12 for the key input unit is provided, and a predetermined center of the center is provided. A screw mounting hole 13 is provided at one location. Engaging projections 14 for the display unit are provided at two predetermined positions on the right side of the rear end of the lower case 3. A pair of engaging projections 15 for the printer cover are provided at two predetermined positions on the left side of the rear end of the lower case 3. A main circuit board 16 is provided on the right front part of the lower case 3, a power supply 17 is provided on the right rear part, and a printer 18 is provided on the left rear part. The printer 18 is electrically connected to the main circuit board 16 via a flexible wiring board 19.

The key input unit 4 has a structure in which various keys 22 are arranged on the surface of a unit body 21. First engaging projections 23 for the lower case are provided on the lower surface of the front end portion of the unit main body 21 at predetermined three positions on the left and right and in the center. Second engaging projections 24 for the lower case are provided at two predetermined left and right positions on the lower surface of the rear end of the unit main body 21. Engagement holes 25 for a printer cover are provided at two predetermined positions on the left side of the rear end surface of the unit main body 21. Engagement holes 26, which are substantially L-shaped in a plane, are provided for auxiliary covers at four predetermined positions on the right upper surface of the rear end of the unit body 21, and a mode key switch is inserted at one predetermined right position on the same upper surface. Stupid holes 27 are provided.

The display unit 5 has a structure in which a display unit (not shown) is housed in the unit main body 31. Engagement projections 32 for auxiliary covers are provided at two predetermined positions on the left and right of the front end of the unit body 31. Engagement protrusions 33 for the lower case are provided at two predetermined positions on the left and right sides of the lower surface of the rear end of the unit body 31.

The printer cover 6 is for covering the printer 18, and has a printing paper discharge hole 41 at a predetermined position. Engagement protrusions 42 for the key input unit are provided at two predetermined positions on the left and right of the front end of the printer cover 6. A pair of engagement holes 43 for the lower case are provided at predetermined two left and right positions on the lower surface of the rear end of the printer cover 6.

The auxiliary cover 7 is for fixing the key input unit 4 and the display unit 5 to the lower case 3, as described later. Although only the front two positions are shown at predetermined four positions on the lower surface of the auxiliary cover 7, there are provided substantially L-shaped engaging projections 51 for the front surface for the key input unit. An engaging projection 52 for a display unit is provided on the rear end surface of the auxiliary cover 7. A mode key switch insertion hole 53 is provided at a predetermined position on the right side of the upper surface of the auxiliary cover 7. A screw insertion hole 54 is provided at a predetermined position on the left end of the auxiliary cover 7.

Next, a case where the key input unit 4, the display unit 5, the printer cover 6, and the auxiliary cover 7 are attached to the lower case 3 in this electronic cash register will be described. In this case, first, the key input unit 4 and the display unit 5 are attached to the lower case 3, then the auxiliary cover 7 is attached to the lower case 3, and then the printer cover 6 is attached to the lower case 3.

That is, the second engaging projection 24 for the lower case of the key input unit 4 is engaged with the second engaging recess 12 for the key input unit of the lower case 3, and When the first engaging projection 23 for the lower case of No. 4 is engaged with the first engaging recess 11 for the key input unit of the lower case 3, the key input unit 4 is moved to the front part on the lower case 3. Attached to. Further, when the engagement protrusion 33 for the lower case of the display unit 5 is engaged with the engagement protrusion 14 for the display unit of the lower case 3, the display unit 5 is attached to the rear right side of the lower case 3.

Next, the engagement protrusion 52 for the display unit of the auxiliary cover 7 is engaged with the engagement protrusion 32 for the auxiliary cover of the display unit 5, and the engagement protrusion 51 for the key input unit of the auxiliary cover 7 is provided. 2 is inserted into the large hole on the left side in FIG. 2 of the engaging hole 26 for the auxiliary cover of the key input unit 4, and then the auxiliary cover 7 is slid to the right side in FIG. The engaging projection 51 for engagement is engaged with the small hole on the right side in FIG. 2 of the engaging hole 26 for the auxiliary cover of the key input unit 4. In this state, the screw insertion hole 54 of the auxiliary cover 7 is aligned with the screw mounting hole 13 of the lower case 3. Then, when the screw 55 is screwed into the screw mounting hole 13 via the screw insertion hole 54, the auxiliary cover 7 is mounted to the lower case 3.

Next, the engagement projection 42 for the key input unit of the printer cover 6 is engaged with the engagement hole 25 for the printer cover of the key input unit 4, and then the rear wall portion of the printer cover 6 is pressed. Then, while the rear wall portion is elastically deformed, the lower case engagement hole 43 of the printer cover 6 is engaged with the printer cover engagement projection 15 of the lower case 3, and the printer cover 6 is lowered. It is attached to the rear left side of the case 3.

Thus, the electronic cash register is assembled. In this assembled state, the auxiliary cover 7 has the engagement projection 51 for the key input unit engaged with the small hole on the right side in FIG. 2 of the engagement hole 26 for the auxiliary cover of the key input unit 4. This prevents the upward movement, and the screw 55 is screwed into the screw mounting hole 13 of the lower case 3 through the screw insertion hole 54, so that the screw 55 is moved to the left side in FIG. It is fixed to the lower case 3 with the slide blocked. In the key input unit 4, the second engaging projection 24 for the lower case is engaged with the second engaging recess 12 for the key input unit of the lower case 3, and The first engaging projection 23 of the lower case 3 is engaged with the first engaging recess 11 of the lower case 3 for the key input unit, and the engaging hole 26 for the auxiliary cover thereof is used for the key input unit of the auxiliary cover 7. Since the engaging projection 51 of is engaged, it cannot be removed. In the display unit 5, the engagement protrusion 33 for the lower case is engaged with the engagement protrusion 14 for the display unit of the lower case 3, and the engagement protrusion 32 for the auxiliary cover displays the auxiliary cover 7. Since it is engaged with the engaging projection 52 for the unit, it cannot be removed. When the wall of the printer cover 6 is subsequently pressed and elastically deformed, the lower case engaging hole 43 is disengaged from the printer cover engaging protrusion 15 of the lower case 3 and is thus removable. The reason why only the printer cover 6 is detachable is that the roll-shaped printing paper, which is a consumable item, can be easily loaded into the printer 18.

Next, when repairing either the key input unit 4 or the display unit 5 with this electronic cash register, or the type of either the key input unit 4 or the display unit 5 is selected by the user, for example. If you want to change according to the above, first remove the screw 55. Next, the auxiliary cover 7 is slid to the left side in FIG. 2, and the engagement projection 51 for the key input unit is set to the large hole portion on the left side in FIG. 2 of the engagement hole 26 for the auxiliary cover of the key input unit 4. When the auxiliary cover 7 is positioned and then the auxiliary cover 7 is lifted, the auxiliary cover 7 is removed. In this state, both the key input unit 4 and the display unit 5 can be removed. Therefore, when repairing the key input unit 4 or changing its model, only the key input unit 4 is removed, while when repairing the display unit 5 or changing its model, the display unit 5 Only will be removed.

As described above, in this electronic cash register, the key input unit and the display unit are separate units 4 and 5, and these units 4 and 5 are lower casings without using screws. Since it is attached to No. 3, it can be disassembled for repairs easily and efficiently, and when changing the model of either the key input unit 4 or the display unit 5, only that unit must be changed. can do. Even if the auxiliary cover 7 is used, the auxiliary cover 7 is attached to the lower case 3 by one screw 55, so that the screw attaching / detaching work becomes easier as compared with the case of using a plurality of screws. ..

By the way, in the electronic cash register, as described above, the key input unit 4 is provided with the stupid hole 27 for inserting the mode key switch, and the auxiliary cover 7 is set at the predetermined place. A mode key switch insertion hole 53 is provided in the. A mode key switch will be inserted through these holes 27 and 53, and the structure of this portion is shown in FIGS. 3 and 4A and 4B.

Two first guide pieces 61, one second guide piece 62 are provided at predetermined positions around the stupid hole 27 for inserting the mode key switch on the lower surface of the unit body 21 of the key input unit 4. One elastic hook piece 63, two first fixed hook pieces 64 and two second fixed hook pieces 65 are provided. On the other hand, the mode key switch 66 has a head portion 67 having a smaller diameter than the stupid hole 27 for inserting the mode key switch of the key input unit 4 and an outer diameter substantially the same as the inner diameter of the mode key switch inserting hole 53 of the auxiliary cover 7. It has a structure with. A rectangular switch circuit board 68 is attached to the bottom of the mode key switch 66. The switch circuit board 68 is electrically connected to the main circuit board 16 via a flexible wiring board 69.

When the mode key switch 66 is assembled, first, as shown in FIG. 4A, the first side 68 a of the switch circuit board 68 is arranged along the two first guide pieces 61. The second side 68b of the switch circuit board 68 is engaged with the two first fixed hook pieces 64, and then the third side 68c of the switch circuit board 68 is engaged with one elastic hook piece 63 and The switch circuit board 68 is temporarily fixed to the key input unit 4 together with the mode key switch 66 by being arranged along the two second guide pieces 62. At this time, as shown in FIG. 4B, the head 67 of the mode key switch 66 is projected to the outside by inserting the right side (left side in FIG. 2) of the stupid hole 27 for inserting the mode key switch. Then, in this state, as described above, the key input unit 4 is attached to the front portion on the lower case 3, and the display unit 5 is attached to the rear right side on the lower case 3.

Next, as already described above, the engaging protrusion 52 for the display unit of the auxiliary cover 7 is engaged with the engaging protrusion 32 for the auxiliary cover of the display unit 5, and the auxiliary cover 7 is provided. 2 is inserted into the large hole portion on the left side in FIG. 2 of the engaging hole 26 for the auxiliary cover of the key input unit 4. At this time, the head 67 of the mode key switch 66 is inserted into the mode key switch insertion hole 53 of the auxiliary cover 7, as shown by the arrow in FIG. Next, as already explained, the auxiliary cover 7 is slid to the right side in FIG. 2, and the engaging projection 51 for the key input unit of the auxiliary cover 7 is inserted into the engaging hole for the auxiliary cover of the key input unit 4. 26 in the small hole on the right side in FIG. Then, since the head 67 of the mode key switch 66 is inserted through the mode key switch insertion hole 53 of the auxiliary cover 7, the mode key switch 66 together with the switch circuit board 68 in FIGS. 4 (A) and 4 (B). Moving to the left side, as shown in FIGS. 5A and 5B, the fourth side 68d of the switch circuit board 68 is engaged with the two second fixing hook pieces 65, and the mode key switch The head 67 of 66 is positioned on the left side of the fool hole 27 for inserting the mode key switch, and the mode key switch 66 is fixed at the desired position. In this case, since the screw is not used to fix the mode key switch 66 to the desired position, the number of parts can be reduced accordingly.

[0024]

[Effect of the device]

 According to this invention, the key input section and the display section are separate units, and these units are attached to the lower case without using screws, so disassembly for repairs etc. is easy and efficient. In addition, when changing the model of either the key input unit or the display unit, only that unit can be changed.

[Brief description of drawings]

FIG. 1 is an external view of an electronic cash register of an embodiment.

FIG. 2 is an exploded perspective view of this electronic cash register.

FIG. 3 is an exploded perspective view of the mode key switch of the electronic cash register viewed from below.

FIG. 4 shows a state before fixing a mode key switch in this electronic cash register, (A) is a partial bottom view,
(B) is a sectional view.

FIG. 5 shows a state after fixing a mode key switch in this electronic cash register, (A) is a partial bottom view,
(B) is a sectional view.

[Explanation of symbols]

 3 Lower case 4 Key input unit 5 Display unit 6 Printer cover 7 Auxiliary cover 11 First engaging recess for key input unit 12 Second engaging recess for key input unit 13 Screw mounting hole 14 Engagement for display unit Mating projection 15 Engagement projection for printer cover 23 First engagement projection for lower case 24 Second engagement projection for lower case 25 Engagement hole for printer cover 26 Engagement hole for auxiliary cover 32 Auxiliary Engagement protrusion for cover 33 Engagement protrusion for lower case 33 42 Engagement protrusion for key input unit 43 Engagement hole for lower case 51 Engagement protrusion for key input unit 52 Engagement protrusion for display unit 54 Screw insertion hole 55 screw

Claims (1)

[Scope of utility model registration request] 1. A lower case having a key input unit engaging portion, a display unit engaging portion, and a printer cover engaging portion; and a lower case engaging portion, wherein the lower case engaging portion is provided. A key input unit attached to the front part on the lower case in a state of being engaged with the key input unit engaging part of the lower case; and a lower case engaging part, A display unit attached to the rear right side or left side of the lower case in a state where the joint is engaged with the display unit engaging section of the lower case; and a lower case engaging section, A printer cover attached to the left side or the right side of the rear part of the lower case in a state where the case engaging part is engaged with the printer cover engaging part of the lower case. machine.