JPH0434341B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of assembling a telephone that enables automatic assembly.

[Conventional technology]

Generally, as shown in FIG. 3, a telephone includes a telephone housing 1 consisting of an upper case 2 and a lower case 3 which are divided into upper and lower parts and integrally connected by a set screw, an elastic engagement piece, etc., and a handset 4. It is made up of. The right side part of the upper case 2 is
The operation unit 8 is equipped with dial buttons 5 of the push button dial, various function buttons 6, slide buttons 7 for volume, etc.
The left side part of the front surface is configured as a handset mounting part 9, and a fitting recess 1 into which the handset 4 is inserted and the earpiece parts 10 and 11 are fitted.
2 and 13 are formed at the front end and the rear end, respectively, and a hook button 14 is provided in the fitting recess 13. Various electrical components (not shown) such as a printed circuit board, a switch, and a speaker are arranged inside the telephone housing 1 constructed as described above.

In this case, conventionally, a pushbutton dial 5 is attached to the inner surface of the upper case 2, and a printed circuit board on which telephone circuit components and the like are mounted is disposed inside the lower case 1. Therefore, even the simplest stand-alone telephone requires a printed circuit board for dialing and a printed circuit board for communication circuits, and these two boards may be connected to each other with lead wires, or modular jacks and switches assembled to each mounting part formed on the lower case 3. etc. (not shown) and the communication circuit board are connected by lead wires.

Note that 16 is a machine string and 17 is a curl cord.

[Problem that the invention seeks to solve]

However, as mentioned above, such conventional telephones require two printed circuit boards, which increases the number of parts, and also requires wiring of lead wires.
Since connection work is required, assembly workability is extremely poor, and therefore it is difficult to achieve automatic assembly, and even such a concept is not acceptable.

Therefore, the present invention has been made in view of the above-mentioned problems, and its object is to provide an assembly with excellent assembly workability and automatic assembly.

[Means for solving problems]

The method for assembling a telephone according to the present invention is to invert the upper case and place it on a workbench, and then invert the hook button and the dial button into the hook button hole and the plurality of dial button holes provided in the upper case. A printed circuit board on which a hook switch, a telephone call circuit component, a dial circuit component, etc. are mounted in advance is inverted and placed on the dial button via the dial switch, and then By inverting and placing the lower case on top, the printed circuit board is positioned and held between the screw mounting portions and supporting protrusions formed protruding from the inner bottom surfaces of the lower case and the upper case, and then the fastening means The lower case, the printed circuit board, and the upper case are integrally connected by inserting the lower case from above into the lower case and screwing it into the screw attachment portion of the upper case.

[Effect]

In the method for assembling a telephone according to the present invention, a hook button and a dial button are respectively inverted and assembled into the hook button and dial button holes of the inverted upper case from above, and a printed circuit board which is also inverted is placed thereon. The lower case is placed sequentially from above, and the printed circuit board is held between the upper and lower cases. A fastening means then integrally connects these.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of a telephone employing the method of the present invention, and FIG. 2 is a perspective view of the upper case turned over. Components and portions in the figure that are the same as those in FIG. 3 are designated by the same reference numerals, and their explanations will be omitted. In these figures,
Telephone housing 1 assembled by the method of the present invention
The hook button 14, the hook lever 15, the speaker (not shown), the modular plug 16A of the machine string 16, and the modular plug 1 of the curl cord 17
7A etc. are assembled, and the bottom side has the aforementioned hook lever 15, modular plug 17A,
a printed circuit board 20 disposed within the lower case 3 on which a switch 21 and modular jacks 18 and 19 are respectively mounted corresponding to the switch 17B;
A plurality of dial buttons 5 (for example, 13, but only one is shown in the figure) are mounted on predetermined locations on the upper surface of this printed circuit board 20 via push-button dial switches 22, and the hook button 1
an upper case 2 which is placed on the lower case 3 and holds the printed circuit board 20 together with the case 3; , a plurality of (for example, four) setscrews (fastening means) 2 that integrally connect these upper case 2, printed circuit board 20, and lower case 3.
It is generally composed of 6.

A bearing portion 30 is provided on the inner bottom surface of the lower case 3 to pivotally support the foot lever 15 so as to be rotatable in the front-rear direction.
, a speaker housing cylinder part 31, and four screw mounting parts 3 into which the setscrews 26 are inserted from below.
2a to 32d, and a plurality of board supporting protrusions 33 for supporting the printed circuit board 20, and the lower surface of the case 3 is provided with a machine string storage groove 34, a curl cord storage groove 35, and two plug storage grooves. Recesses 36 and 37 are provided, and through holes 38 and 39 are provided on the bottom surfaces of these storage recesses 36 and 37, respectively, for inserting the modular plugs 16A and 17A into the lower case 3 from below. Modular plug 16A, 17 by
A and the modular jacks 18 and 19 are connected to each other.

The hook lever 15 is formed into a frame shape and integrally has a horizontal shaft 15A in the center extending in the left-right direction, and the hook button 14 is placed on the lever 15. Both ends of the shaft 15A are fitted into the bearing portion 30 and rotatably supported, and the upper half of the hook button 14 normally protrudes above the upper case 2 from the hook button hole 24.

The bearing portion 30 includes two sets of elastic pieces 43a and 43b and 44a and 44, each consisting of a pair of front and rear elastic pieces.
b, and these elastic pieces 43a, 43b, 44
At the upper end portions of opposing surfaces of the shafts a and 44b, respectively, protruding portions 43 and 44 are provided to prevent the shaft 15A from coming off upward. Further, on the outside of each set of elastic pieces 43a, 43b, 44a and 44b, a pair of left and right grooves (not shown) are formed on the upper end surface to support the lower surfaces of both ends of the shaft 15A. Support bodies 45 and 46 are provided in a protruding manner. Both ends of the shaft 15A are connected to the elastic pieces 43a and 43.
b, is inserted from above between 44a and 44b by utilizing the elastic deformation of the elastic piece, and supports 45, 4
It is inserted into the U-shaped groove of 6.

Of the four screw attachment portions 32a to 32d, the two screw attachment portions 32a and 32b on the right side are provided so that their upper surfaces form the same plane as the upper surface of the substrate support protrusion 33, thereby forming a substrate support protrusion. It is used for both purposes.

Through holes 50 and 51 are provided on the right side edge of the printed circuit board 20 in correspondence with the screw mounting portions 32a and 32b.
is provided, and the hook switch 21 is directly attached to the rear of the left edge of the lower surface in correspondence with the hook lever 15. This switch 2
1 is opened by the movable piece 21a being pushed downward by the hook lever 15, that is, when not talking, and when the handset (not shown) is picked up and the hook button 14 is released from the pressed state, the hook button 14 is opened. Movable piece 2
1a returns to the raised position and is closed, thereby setting the state in which communication is possible.

The dial switch 22 is provided corresponding to each dial button 5, and includes a plurality of fixed contacts 52 printed on the surface of the printed circuit board 20, and a plurality of fixed contacts 52 formed of rubber or the like. A flexible member 53 is placed on the printed circuit board 20 so as to cover everything. A plurality of dome portions 54 are integrally provided on the surface of the flexible member 53 in correspondence with the respective fixed contacts 52, and the fixed contacts 52 are provided inside each dome portion 54.
A movable contact (not shown) that closely faces and is integrally provided. The dial button 5 is placed on each dome portion 54, and when the button 5 is pressed to crush the dome portion 54, the movable contact contacts the fixed contact 52, and the pressed dial The dial switch 22 corresponding to the button is configured to close.

As shown in FIG. 2, the inner surface of the upper case 2 is integrally provided with a lattice-shaped partition wall 60 that partitions the dial button holes 25, and each dial button 5 is slidable inside the partition wall 60. The upper case 2 is housed in the upper case 2, and the upper part thereof is protruded above the upper case 2. The button hole 25 is located at the lower end of the dial button 5.
A projecting portion 5A is integrally provided to prevent the device from coming off. The inner surface of the upper case 2 further includes 4
The screw attachment portions 32 of the lower case 3 have two screw attachment portions 63a to 63d and a plurality of board support protrusions 70.
A to 32d are integrally provided in a protruding manner corresponding to the substrate supporting protrusions 33, respectively. In this case, when the upper case 2 and the lower case 3 are integrally connected, the screw attachment portions 63a to 63d are connected to the screw attachment portions 32a to 32d.
are in contact with the upper surface of each via the printed circuit board 20. However, the two screw attachment parts 63c and 63d are inserted into the through holes 50 and 51 of the printed circuit board 20, respectively, and come into direct contact with the upper surfaces of the screw attachment parts 32a and 32b, thereby preventing the printed circuit board 20 from shifting.

Next, the method of assembling the telephone set as described above will be explained. First, the upper case 2 is inverted and placed on a workbench.

Next, the hook button 14 and the dial button 5 are respectively inverted and fitted into the hook button hole 24 and the dial button hole 25 from above, and the flexible member 5 is placed on the dial button 5.
3 and place it upside down. Next, switch 21 and module jack 18 in advance.
The printed circuit board 20 on which the circuit board 19 is mounted is inverted and placed on the flexible member 53. At this time, the printed circuit board 20 is positioned by inserting the tips of the screw attachment parts 63a, 63b of the upper case 2 into the through holes 50, 51 of the printed circuit board 20. Next, the lower case 3 in which the foot lever 15 and the speaker have been pre-assembled is inverted and placed on the upper case 2, and both cases 2 and 3 are fitted into each other. Then, the board supporting protrusions 33 and 70 and the screw mounting parts 32a and 63 provided on the inner surfaces of both cases 2 and 3 are removed.
The printed circuit board 20 is held between a, 32b and 63b. After that, the setscrews 26 are inserted from above into each of the screw attachment parts 32a to 32d of the lower case 3 which has been inverted, and the screw attachment parts 6 of the upper case 2 are inserted.
3a to 63d, the upper case 2, printed circuit board 20, and lower case 3 are integrally connected. Then, part of the machine string 16 and curl cord 17 are fitted into the machine string storage groove 34 and curl cord storage groove 35, respectively, and the modular plugs 16A, 17A are inserted into the through holes 38, 35.
9 and connect them to the modular jacks 18 and 19, respectively, to complete the assembly of the housing 1.

According to the method for assembling a telephone having such a configuration, electric components such as the switch 21 and the modular jacks 18 and 19 are mounted on one printed circuit board 20, and the dial button 5 is mounted on the printed circuit board 20. Since the dial button 5 is mounted on the upper case 2, there is no need to incorporate the dial board or the like into the upper case 2. Therefore, there is no need to connect the printed circuit boards using lead wires, and the switch 21 is mounted on the printed circuit board. 20, there is no need for lead wires to connect them.Furthermore, the upper case 2 is inverted, and the dial button 5, flexible member 53, printed circuit board 20, lower case 3, etc. are inverted from above. After that, the upper case 2, the lower case 3, and the printed circuit board 20 are fixed with the setscrews 26.
Since it is only necessary to combine them integrally, automatic assembly of the housing 1 can be realized. Further, since the dial buttons 5 inserted into each dial button hole 25 so as to be freely retractable and retractable are held by the partition wall 60, the dial buttons 5 will not be displaced. Furthermore, since the printed circuit board 20 is held by the upper case 2 and the lower case 3, a dedicated set screw for fixing the circuit board 20 to the upper case 2 or the lower case 3 is not required, and the number of parts can be reduced.

〔Effect of the invention〕

As explained above, according to the method for assembling a telephone according to the present invention, the hook button and the dial button can be inserted into the hook button hole and the dial button hole from above by inverting the upper case. The button is easy to assemble, and the inverted printed circuit board is placed on top of the dial button via the dial switch, and then the lower case, which is also inverted, is placed on the upper case. Since the printed circuit board is positioned and held between the screw mounting portion and the supporting protrusion formed on the inner bottom surface, both cases and the printed circuit board are integrally connected by the fastening means.
Assembling the entire casing can be done easily and in a short time.In particular, since the switch, telephone circuit parts, dial circuit parts, etc. are mounted on a single printed circuit board, there is no need to connect lead wires, and automatic assembly is possible. This has the great advantage of dramatically improving productivity.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a telephone assembled by the method of the present invention, FIG. 2 is a perspective view of the upper case turned over, and FIG. 3 is an external perspective view of a conventional telephone. 1... Housing, 2... Upper case, 3... Lower case, 5... Dial button, 14... Hook button, 15... Hook lever, 20... Printed circuit board, 21... Hook switch, 22... Dial switch, 24...Hook button hole, 25...
Dial button hole, 26... set screw.

Claims (1)

[Claims] 1. Invert the upper case and place it on the workbench, then flip the hook button and dial button into the hook button hole and the plurality of dial button holes provided in the upper case, respectively, and slidably fit them from above. , a single printed circuit board on which a hook switch, a telephone circuit component, a dial circuit component, etc. are mounted in advance is inverted and placed on the dial button via the dial switch, and the lower case is further inverted on top of it. By placing the printed circuit board, the printed circuit board is positioned and held by the screw mounting portions and supporting protrusions formed protruding from the inner bottom surfaces of the lower case and the upper case, and then the fastening means is inserted into the lower case from above. A method for assembling a telephone, characterized in that the lower case, the printed circuit board, and the upper case are integrally combined by screwing the lower case into the screw mounting portion of the upper case.