JPH056961U - Button telephone - Google Patents

Abstract

(57) [Summary] [Purpose] It is not necessary to prepare multiple types of upper cases or blind covers, and many types of button telephones can be made at the same time during the production process, making it easy to meet the demands of customers afterwards. There is a key telephone structure that can be accommodated. [Structure] A numeric keypad for entering a telephone number, a station line selection button for selecting an external line or an internal line, and a button telephone equipped with an indicator for displaying the call status and input number are incorporated in the telephone case of the button telephone. At least two connectors are attached to a printed circuit board, and a connection plug that can be detachably engaged with one of the connectors is attached to a rear surface of a display case of a display assembly that is manufactured separately from the phone case, and the phone case. The retaining hook and the lock claw that can be detachably engaged with the escape hole and the lock groove of the unit are integrally molded, and are detachably attached to the remaining connector on the rear surface of the unit case of the selection button assembly that is manufactured separately from the telephone case. Connection plug, and
A button telephone characterized by integrally forming a hook and an elastic claw that can be detachably engaged with the hook groove and the locking groove of the telephone case.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a button telephone used for wired telephone equipment and the like, and more particularly to a button telephone structure suitable for mass production.

[0002]

[Prior Art]

 As is well known, conventional button telephones are usually manufactured in a structure as shown in FIGS. That is, inside the telephone case constituted by the upper case 30 and the lower case 31, there is a control unit substrate 32 on which the control elements of the telephone are assembled, and a numeric keypad 33, a function key 34, and a station line selection button 35 on the surface. The keyboard board 36 to be assembled is assembled. That is, when manufacturing a key telephone, the control unit board 32 and the keyboard board 36 are assembled in advance to the lower case 31, while the necessary display 37 composed of an LCD or the like is assembled to the upper case 30. The upper case 30 is mounted on the lower case 31 to complete the button telephone.

[0003]

[Problems to be solved by the device]

 By the way, as a specification of the button telephone manufactured in the manufacturing process, the number of station lines such as an outside line is basically "8", and "12" station line and "16" station line are available according to customer's request. Lines of "station line" and "24" line are selectively produced. In the same manufacturing process, button telephones without display 37, single-digit display 37, and double-digit display 37 are produced according to customer demand. It will also be done. Therefore, in the conventional button telephone structure as described above, in order to meet the demands of these consumers, a plurality of types of the upper case 30 for mounting the display 37 and the upper case 30 without the display 37 are installed. Since it is necessary to prepare the case 30 and the blind cover 38 corresponding to the type of the number of station lines, it is necessary to prepare a plurality of types of upper cases 30 that require a large mold and a large number of types of blinds. Due to the provision of the lid 38, the manufacturing cost becomes very expensive. Moreover, the manufacturing cost is high even if many types of key telephones cannot be manufactured at the same time. That is, in the conventional structure, the required number of station line selection buttons 35 are assembled to the keyboard board 36 in advance, and the blind cover 38 and the upper case 30 corresponding to the keyboard board 36 are assembled to the lower case 31. Due to the necessity, it is impossible to produce key telephones with various specifications at the same time. For this reason, conventionally, it has been inevitable to manufacture a button telephone having a structure suitable for use in each production lot based on a production plan according to demand, which is the cause. The number of stocks has increased and the manufacturing cost has increased. In addition, when operating telephone equipment, it is often the case that the customer will later request an increase in the number of station lines of the installed key telephone and installation of the display 37. In order to meet the requirements, most of the parts need to be replaced, which places a heavy burden on consumers. In view of the above-mentioned structural problems of the conventional button telephones, the present invention does not need to prepare a plurality of types of upper cases and blind covers, and makes many types of button telephones simultaneously in the production process. It is possible to obtain a button telephone structure that can meet the later demands of consumers.

[0004]

[Means for Solving the Problems]

 In order to achieve this object, the present invention provides a numeric keypad for inputting a telephone number or the like, a station line selection button for selecting an external line or an internal line, and a key telephone having an indicator for displaying a call status or an input number. At least two connectors can be attached to the printed circuit board incorporated in the telephone case, and can be detachably engaged with one of the connectors on the rear surface of the indicator case of the indicator assembly which is manufactured separately from the telephone case. On the back of the unit case of the select button assembly that is prefabricated separately from the telephone case, the connection plug, the retaining hook and the locking claw that can be detachably engaged with the escape hole and the lock groove of the telephone case are integrally molded. , A connection plug that can be detachably engaged with the remaining connector, and a hooking groove and a locking groove of the telephone case. The hanging hook and the elastic claw which can detachably engage is to propose that you integrally molded.

[0005]

【Example】

 Hereinafter, details of the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of a button telephone according to the present invention. A telephone case of the button telephone includes a lower case 3 in which a keyboard board 1 and a control unit board 2 shown in FIGS. 3 and 6 are incorporated. , The numeric keypad 4, the function key 5, the function key 6, and the station line selection button 7 of the number of basic station lines (“8” station line in the case shown in FIG. 1) mounted on the keyboard board 1 are externally arranged. It has one upper case 9 having a plurality of holes 8 that can be exposed. That is, on the surface of the keyboard substrate 1, the numeric keypad 4, the function keys 5, the function keys 6, and the station line selection buttons 7 are arranged in the same manner as in the conventional case, and these ten keys 4, the function keys 5, the function keys 6, and the station keys are arranged. By inserting the line selection button 7 into the corresponding hole 8 of the upper case 9, the relationship between the keyboard substrate 1 and the upper case 9 can be determined. On the rear side of the upper case 9, there is formed a display unit mounting portion X to which a display unit assembly 10 and a display unit cover 10A, which will be described in detail later, are selectively mounted. A select button mounting portion Y to which a select button assembly 11 and a select button cover 11A, which will be described later in detail, are selectively mounted, is formed. Further, as shown in FIG. 3, a display connector 12 facing the display mounting portion X is mounted on the rear surface of the keyboard board 1, and a right surface of the keyboard board 1 corresponds to the display connector 12. The unit connector 13 facing the display mounting portion X is mounted in advance.

FIG. 2 shows the display assembly 10 as seen from the back side. The display case 10a formed by resin molding has a display surface exposed on the surface corresponding to the surface of the telephone case. 10b is built in, and as this display 10b, two kinds of structures are prepared, a one-digit display type and a two-digit display type. An indicator plug 14 that can be inserted into the indicator connector 12 at its tip corresponds to the indicator connector 12 on the back surface of the indicator assembly 10 that is pre-assembled on a preparatory assembly line that is different from the button telephone manufacturing line. It will be fixed at the position you made. On the back surface of the display case 10a, the "L" -shaped retaining hook 10c that can be inserted into the pair of escape holes 15 formed in the display mounting section X and the lock groove of the display mounting section X are provided. An elastic locking claw 10d that can be dropped into 16 is formed by protrusion.

FIG. 7 shows a display unit cover 10A used for the display unit mounting portion X in place of the display unit assembly 10 described above. The display unit cover 10A is equivalent to the display unit case 10a of the display unit assembly 10. Molded into a large and uniform shape. That is, as is apparent from the drawings, the display cover 10A has the retaining hooks 10c and the locking claws 10d similar to those of the display assembly 10 described above, and the retaining hooks 10c and the locking claws 10d are projected on the back surface. Can be fixed to the indicator mounting portion X of the upper case 9.

The selection button assembly 11 shown in FIG. 5 has a plurality of additional selection buttons 11a incorporated therein, and each of these additional selection buttons 11a is assigned an external line or extension telephone. In addition to the 16 "station line extension selection button 11a, in the present embodiment, a plurality of types of selection button assemblies 11 incorporating a different number of extension selection buttons 11a from the extension selection button 11a. The selection button assembly 11 having the required number of additional selection buttons 11a is used for the upper case 9 according to the demand of the customer. That is, as shown in an inverted manner in FIG. 5, the unit plug 17 that can be inserted into the unit connector 13 of the selection button mounting portion Y described above is fixed in the center of the back surface of the unit case 11b of the selection button assembly 11. .. In addition, a pair of hooks 11c aligned along the side edges and a pair of elastic claws 11d facing the hooks 11c are formed on one side edge of the unit case 11b by projection molding. To be done. That is, as shown in FIG. 6, each hook 11c is detachably engageable with a corresponding hook groove 18 formed in the selection button mounting portion Y of the upper case 9, and each elastic claw 11d is The selection button assembly 11 is prevented from coming off the upper case 9 by being elastically locked in the locking groove 19 formed in the corresponding portion of the case 9.

Further, when manufacturing a button telephone which does not require the selection button assembly 11, a selection button cover 11A is used for the selection button mounting portion Y of the upper case 9 instead of the selection button assembly 11. That is, as shown in FIG. 8, on the back surface of the selection button cover 11A, a pair of hooks 11c similar to the selection button assembly 11 and a pair of elastic claws 11d facing the hooks 11c are provided. Since the protrusions are molded, the selection button cover 11A can be detachably fixed to the upper case 9 by utilizing the hooks 11c and the elastic claws 11d.

Since the button telephone according to the illustrated embodiment has the structure as described above, it is possible to rationally produce a large number of used button telephones in the manufacturing process of the button telephone. Prior to the assembly of the button telephone, the display assembly 10, the display section cover 10A, the selection button assembly 11 and the selection button cover 11A described above are unitized, so that they are independent from the production line of the button telephone. Can be completed on the assembly line. In the manufacturing process of button telephones, the numeric keypad 4, the function key 5, the function key 6, the station line selection button 7, the keyboard board 1 with the indicator connector 12 assembled, and the control unit board with the unit connector 13 assembled By assembling 2 inside the lower case 3 and completely fixing the upper case 9 to the lower case 3, most of the assembly of the button telephone is completed. After that, the indicator assembly 10 or the indicator cover 10A is selectively attached to the indicator attachment portion X, and the selection button cover 11A or the selection button assembly 11 is selectively selected to the selection button attachment portion Y, depending on the customer's order or production plan. You can install it on.

In detail, in order to attach the display assembly 10 or the display cover 10 A to the display mounting portion X, the retaining hook 10 c of the display assembly 10 or the display cover 10 A should be removed from the upper case 9. When the display assembly 10 is inserted into the hole 15 and slides toward the front of the upper case 9, the lock claw 10d of the display assembly 10 or the display cover 10A falls into the lock groove 16 of the upper case 9. The display assembly 10 or the display cover 10A can be completely fixed to the telephone case. In this case, the indicator plug 14 of the indicator assembly 10 is automatically engaged with the indicator connector 12 of the keyboard board 1 by sliding the indicator assembly 10. The electrical connection of is also automatically completed. To attach the selection button cover 11A or the selection button assembly 11 to the selection button mounting portion Y, attach the hook 11c of the selection button cover 11A or the selection button assembly 11 to the hook groove 18 of the upper case 9 and the elastic claw 11d. When the selection button cover 11A or the selection button assembly 11 is strongly pressed against the surface of the upper case 9 by aligning with the lock grooves 16 respectively, the elastic claws 11d elastically engage with the corresponding lock grooves 16. , Button button cover 11A or button assembly 11 can be completely fixed to the case. In this fixed state, as shown in FIG. 6, the unit connector 13 of the control unit board 2 is completely engaged with the unit plug 17 of the selection button assembly 11, so that the control unit board 2 It is not necessary to make the electrical connection between the selection button assembly 11 and the selection button assembly 11 again.

After the installation of the telephone equipment, when the customer requests the addition of the display assembly 10 or the addition of the additional selection button 11a, the upper case 9 is removed from the telephone case, and the display is displayed with a screwdriver or the like. By simply pressing the lock claw 10d of the assembly 10 or the display cover 10A, the display assembly 10 or the display cover 10A can be slid with respect to the upper case 9. Therefore, without using any tool, These can be easily replaced. When replacing the selection button cover 11A or the selection button assembly 11, bend the elastic claw 11d with the tip of a screwdriver and remove the elastic claw 11d from the locking groove 19 to select the selection button from the upper case 9. The cover 11A or the selection button assembly 11 can be easily removed. Therefore, even after the installation of the telephone equipment, it is possible to easily deal with the problem by replacing only the parts at the necessary places, so that it does not impose a great burden on the customer. Of course, even when the display assembly 10 or the selection button assembly 11 fails, the display assembly 10 or the selection button assembly 11 can be easily removed from the upper case 9 as described above, so that the repair work can be performed quickly. Can be done.

[0013]

[Effect of the device]

 As is apparent from the above description, according to the present invention, the indicator assembly, which is attached to the telephone case as needed, is detachably fixed to the upper case, and at the time of fixing, the electric elements such as the internal elements of the button telephone are fixed. The structure that enables automatic connection to be completed automatically and the additional or modified select button assembly is detachably fixed to the upper case of the telephone case, so only one upper case with high manufacturing cost needs to be prepared. Manufacturing costs can be reduced through simplification and flexibility of the manufacturing line, and it is possible to obtain a key telephone that can easily handle expansions after the installation of telephone equipment and equipment changes.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a key telephone according to the present invention.

FIG. 2 is a rear view of a display assembly used in the button telephone.

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1 in an assembled state of the button telephone.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 1 in an assembled state of the button telephone.

FIG. 5 is a rear view of a selection button assembly used in the same button telephone.

6 is a sectional view taken along the line 6-6 of FIG. 1 in the assembled state of the button telephone.

FIG. 7 is a rear view of a display cover used for the button telephone.

FIG. 8 is a back view of a selection button cover used in the same button telephone.

FIG. 9 is a perspective view of a conventional key telephone.

10 is a sectional view taken along the line 10-10 in FIG.

[Explanation of symbols]

 3 Lower case 4 Numeric keypad 7 Station line selection button 9 Upper case 10 Display unit 10b Display unit 10c Locking hook 10d Lock claw 10A Display cover 11 Selection button assembly 11A Selection button cover 11c Hook hook 11d Elastic claw 13 Unit connector 15 Relief Hole 16 Lock groove 17 Unit plug 18 Engagement groove 19 Locking groove

Claims (1)

[Claims for utility model registration] [Claim 1] A numeric keypad for inputting a telephone number or the like, a station line selection button for selecting an outside line or an extension line, and a button telephone having a display for displaying a call status or an input number At least two connectors are assembled on a printed circuit board incorporated in a telephone case of a button telephone, and the connector is detachably attached to one of the connectors on the rear surface of the indicator case of a display assembly which is manufactured separately from the telephone case. A connection plug that can be fitted, and a rear surface of a unit case of a selection button assembly that is integrally formed with a retaining hook and a lock claw that can be detachably engaged with the escape hole and the lock groove of the telephone case, and is manufactured separately from the telephone case. The connection plug that can be detachably engaged with the remaining connector, and the hooking groove and the locking groove of the telephone case. Key telephone being characterized in that integrally formed hanging hook and the elastic claw which can detachably engage.