JP2873264B2 - Electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric apparatus such as a telephone or a facsimile which performs information communication using a telephone line.

[0002]

2. Description of the Related Art Conventionally, in an electric device such as a communication terminal device for performing information communication using a telephone line, as shown in FIG. 15, a housing structure is formed of a conductor such as a sheet metal and has an upper portion having a plurality of bosses c. A logic package d is accommodated and fixed inside a case a and an L-shaped lower case b, a display panel e is fixed at a front part of the upper case a, and a push button g is attached to a key f mounted on the logic package d. Is installed.

[0003]

However, in the above-mentioned conventional electric equipment, since the upper case a has a sheet metal structure, a large number of man-hours are required in manufacturing. In assembling, the lower case b is connected to a plurality of bosses of the upper case a. Since a large number of screws h are used to fix the cable c, there is a problem that the workability of assembly is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to eliminate the use of screws as compared with a conventional housing structure, and to easily assemble electric equipment. Provided is an electrical device that not only can improve workability but also can be equipped with a larger number of interfaces in a logic package and can be reduced in size, and can be easily assembled and disassembled. Is to do.

[0005]

In order to achieve the above object, an electric apparatus according to the present invention has a plurality of logic package holders at predetermined intervals in the front-rear direction inside left and right side portions. And an upper case made of a synthetic resin having an upper case side engaging portion, and a lower case side engaging portion and a hook portion at the left and right front portions, and the hook portion is hooked to the frontmost logical package holding portion. A lower case made of a conductor that engages the lower case-side engaging portion with the upper case-side engaging portion by pivoting to the upper case side and overlapping and pushing into the upper case;
A package holder having a logic package inserted and held in an upper case by guiding the logic package holding section, and a connector and a power switch constituting an interface, and a power cable fixed and mounted on the logic package. In the space after this movement, an earth terminal having only the function of earth connection is provided, a notch is provided on the rear surface of the lower case, and an insulating bush through which a power cable is inserted is provided in the notch. It is characterized by being detachably attached.

[0006]

According to this structure, the use of screws is eliminated as compared with the conventional housing structure, and the electric device can be easily assembled and the assembling workability can be improved. An interface can be mounted, the size of the electric apparatus can be reduced, and assembly and disassembly become easy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a front view showing an electric apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of the electric apparatus, and FIG.
4 is a plan view of the electric device, FIG. 4 is a right side view of the electric device, FIG. 5 is a rear view of the electric device, and FIG. 6 is an exploded perspective view of the electric device.

The electric apparatus according to the present invention comprises an upper case 1 made of synthetic resin, a lower case 2 made of metal, a display panel 3, a push button unit 4, and logic packages 9 and 10.

As shown in FIGS. 6 and 8, the upper case 1 has an upper surface 1A, left and right side surfaces 1B and 1C, and a front surface 1D, and lacks a rear surface. The front part 1D has a slope inclined downward.

A heat radiating hole 1a is formed in the left side portion 1B, and an inner surface portion of the left and right side portions 1B and 1C is formed in the left side portion 1B.
Logical package holding unit 2 located at the front, back, and center
Reference numerals 0, 21, and 22 protrude integrally with the upper case 1.

The front and center logical package holding units 2
Nos. 0 and 22 have the same configuration, and this is the upper and lower U-shaped protrusions 1.
e, 1f are back-to-back to form a guide groove 1z between the U-shaped protrusions 1e, 1f and the lower U-shaped protrusion 1f,
An insertion groove 1g is formed between the right side surfaces 1B and 1C and the inner surfaces of the right side surface portions 1B and 1C.
As shown in FIGS. 6, 8 and 11, the upper and lower U-shaped protrusions 1e and 1f are back-to-back to form a guide groove 1z between the U-shaped protrusions 1e and 1f, and the lower U-shaped protrusion is formed. An insertion groove 1g is formed between 1f and the inner surfaces of the left and right side surfaces 1B and 1C, and the rear portion of the lower U-shaped protrusion 1f projects rearward with respect to the upper U-shaped protrusion 1e. This protruding portion is formed as an engaging portion 23 as an upper case side engaging portion, and an engaging protruding portion 1m for engaging with the notch 9f of the logic package 9 is provided at the front of the guide groove 1z as shown in FIG. It is formed.

On the inner surfaces of the left and right side surfaces 1B and 1C, longitudinal ribs 1h are formed at the front and rear, and a rib 1y and a gap 1j are formed at the lower end of these longitudinal ribs 1h. It is.

A liquid crystal display accommodating portion 2 for accommodating and fixing a liquid crystal display (LCD) 5 is provided on a front portion 1D of the upper case 1.
4 and a push button unit mounting section 25 for mounting the push button unit 4 are provided.

The liquid crystal display accommodating section 24 has a rectangular opening 1t and a step 1 formed outside the periphery of the opening 1t.
d and a liquid crystal display (LC
And D) projections 1u and 1c for holding 5).

The push button unit mounting section 25 is shown in FIG.
Has an elongated hole 1s for accommodating the push button 4a as shown in FIG.
A plurality of protrusions 1v are formed at predetermined intervals on the upper and lower surfaces of the long hole 1s, and a hole 1r for mounting the push button unit 4 is provided above and below the long hole 1s. It is.

An engaging portion 26, which is an upper case-side engaging portion with which the end 2k of the rear surface 2B of the lower case 2 engages, is provided at the center of the upper case 1 at the rear inner side of the upper case 1A. 2, the engaging portion 26 has an inclined surface 1x and a groove 1w.

As shown in FIG. 9, the lower case 2 is integrally formed of a conductor such as a sheet metal for the purpose of shielding static electricity and noise in electric equipment, and has a bottom surface 2A and a rear surface 2B. A logic package 9 is provided on the bottom surface 2A.
Recess 2 for preventing contact with ROM 14 mounted on
d and radiating holes 2n are formed.

The upper case 1 is provided on both sides of the bottom surface 2A.
Ribs 2e engaging with the gaps 1g, 1j are formed,
A hook 27 is formed at the front of the rib 2e. The hook 27 has an L-shaped protrusion 2b having a notch 2c.
Consisting of Also, the rear end of the rib 2e is absent and is a flat portion 2j, and the rear end of the rib 2e is a stopper 2q.
It has been made to. A rib 2m is formed at the front edge of the bottom surface 2A.

The rear surface 2B of the lower case 2 has a U-shaped notch 2h, a screw hole 2g, a plurality of openings 2r,
A notch 2f, which is an engagement hole as a lower case-side engagement portion facing the stopper 2q at the rear end of e.

The display panel 3 has an elongated hole 3b for accommodating the push button 4a of the push button unit 4, as shown in FIG.
And a transparent portion 3a for seeing through the liquid crystal display (LCD) 5 from the outside.

The push button unit 4 has a rectangular case main body 4A. The front side of the case main body 4A is provided with a hole 1
r, and a projection 4b is provided so as to engage with the light-emitting diode (LED).
An accommodation portion (not shown) for accommodating the front end portion 12a of the twelve is disposed.

The logic package 9 is composed of a printed circuit board, on the upper surface of which a connector 15 having a part of a terminal 15a connected to the ground is mounted, and on the lower surface, a connector 14a and a ROM 14 are provided. Is provided. A hole 9a for mounting the spacer 8 and a hole 9b for mounting the spacer 7 are provided on the surface of the printed circuit board. A plurality of electronic keys 11 having a tip 11a and a display unit 12a are provided on the front edge of the printed circuit board. Having a light emitting diode (LED) 12 and a hole 9 for engaging with the push button unit 4
c, a hole 9e for mounting the holder 6, and a liquid crystal display (L
CD) 5 is provided.

At the rear edge of the printed circuit board, connectors 29 and 30 constituting an interface, a power supply cable 18 are fixed by a cable holder 18a, a package holder 17 mounted thereon, a power supply switch 19, and a ground terminal 33. Is provided. In this case, a power switch 19, a ground terminal 33, a connector 29, and a connector 30 are mounted in this order on the rear edge of the printed circuit board from left to right as viewed from the front. 33 in front of it. The ground terminal 33 has only a function for ground connection, and is provided with a screw hole 33a.

Further, a chamfered portion 9d is formed at the front end on both sides of the printed circuit board, and a cutout 9f is formed at the rear.

The logic package 10 is formed of a printed circuit board, and a connector 16 having a terminal 16a connected to the ground is provided on a side of the upper surface of the logic package 10. A connector 16 is provided at a corner of the printed circuit board. A hole 10a is provided. The spacer 7 is provided with a projection 7a and a leaf spring 7b.

The liquid crystal display (LCD) 5 is provided with a connection cable 5a. The power cable 18
The insulating bush 34 for protecting the power cable 18 from the notch 2h of the rear surface 2B of the lower case 2
Is provided. That is, this insulating bush 34 is
As shown at 0, a hole 34b for inserting the power cable 18 is provided at the center thereof, and a groove 34a into which the edge of the cutout 2h is inserted is provided at the outer periphery.

Next, the assembling operation of the electric device configured as described above will be described. First, the display panel 3 is attached and fixed to the outside of the front part of the upper case 1.

The logic packages 9 and 10 are provided at the upper and lower ends of the spacer 7 with spacers 7 interposed between the logic packages 9 and 10 in order to leave a gap so that the mounted electronic components do not interfere with each other. The protrusions 7a are inserted into the holes 9b, 10a of the respective logic packages 9, 10, and are fixed by the action of the leaf spring 7b.

At this time, each of the logical packages 9 and 10
The protrusion 7a of the spacer 7 interposed between the holes 9b and 10a
, The positioning when fitting the connectors 15 and 16 of the respective logic packages 9 and 10 is facilitated, so that the assemblability is improved. The hole 9 of the logic package 9
The protrusion 8a of the spacer 8 is inserted from below into a, and is fixed by the action of the leaf spring 8b.

On the other hand, the tip of the connection cable 5 a connected to the liquid crystal display (LCD) 5 is fixed to the connector 13 mounted on the logic package 9. Further, the protrusion 6a of the holder 6 is inserted and fixed in the hole 9e of the logic package.

On the other hand, the push button unit 4 is mounted on the front end of the logic package 9 and constitutes a push button switch together with the electronic key 11. The tip 11a of the electronic key 11 mounted on the logic package 9 comes into contact with the base (not shown) of the push button unit 4 to form a push button switch. Also,
Light emitting diode (LED) mounted on logic package 9
Twelve display portions 12a are housed in the push button unit 4.

Next, as described above, the push button unit 4
, A liquid crystal display (LCD) 5, a spacer 6, a logic package 10 fixed via the spacer 7, and a logic package 9 on which the spacer 8 is mounted, as shown in FIGS.
As shown in the figure, the left and right edges of the logic package 9 are inserted into the guide grooves 1z of the rear logic package holding portion 21 provided on the left and right sides of the upper case 1, and the logic package 9 is placed on the upper portion. The case 1 is moved forward from the back, and the left and right edges of the logic package 9 are guided along the guide grooves 1z of the logic package holding units 20, 21, and 22 at the center and front sides.
To the notch 9 provided in the rear part of the logic package 9 in the projection 1m of the logic package holding part 21 on the rear side.
The logic package 9 is fixed to the upper case 1 by engaging f. In this case, the power cable 18 is insulated bush 3
4 is inserted through the hole 34a.

Here, the chamfered portion 9d at the front of the logic package 9 and the roundness 1n at the entrance of the guide groove 1z of the logic package holding portions 20, 21, and 22 correspond to the logic package 9
This facilitates the workability when inserting the.

On the other hand, a liquid crystal display (LCD) 5 is provided on a step 1 d provided at the front of the upper case 1.
The upper and lower sides of the upper case 1 are fitted and accommodated. The upper part engages with the protrusion 1u of the upper case 1, the lower part is placed on the protrusion 1c, and the lower part is further mounted on the holder 6 mounted on the logic package 9 by the liquid crystal. Hold down the backward movement of the display (LCD) 5 and
The fixed portion 6b having the spring property absorbs the impact.

Next, the fixing of the upper case 1 and the lower case 2 will be described. First, the insulating bush 34 is inserted into the cutout 2h of the rear surface 2B of the lower case 2 with the groove 34a. Then, the upper case 1 is turned upside down, and the L-shaped protrusion 2 of the lower case 2 is placed under the logic package holding unit 20 at the front of the upper case 1 with the upper surface 1A thereof facing down.
The lower case 2 is inserted into and engaged with the lower case 2, and the lower case 2 is placed on the upper case 1 side with the part of the front logical package holding portion 20 as a fulcrum. The left and right ribs 2e are connected to the gaps 1g, 1 of the upper case 1.
j.

Next, by pushing the lower case 2 forward, the end 2k of the rear surface 2B of the lower case 2 is brought into sliding contact with the inclined surface 1x of the engaging portion 26 near the center of the rear surface of the upper case 1. This end 2k is engaged with the groove 1w. At this time,
The lower case 2 is located at the mounting position of the upper case 1 from below.
As shown by the dotted line in FIG. 4, the lower case 2 is placed between the notch 2f and the flat portion 2j of the lower case 2 to slide in the direction of the arrow (a) and slide in the direction of the arrow (b). The engaging portion 23, which is the rear end of the letter-shaped protrusion 1f, is engaged.

The engagement between the logical package holding portion 20 and the L-shaped protrusion 2b at the front and the engagement of the engagement portion 23 with the notch 2f at the rear depend on the upper and lower portions of the upper case 1 and the lower case 2. The direction is fixed, and the engagement near the rear center, that is, the engagement portion 2 of the end 2k of the rear surface 2B of the lower case 2 with the upper case 1
6 is fixed in the horizontal direction.

Here, the inclined surface 1x of the upper case 1 makes the insertion of the end 2k of the lower case 2 smooth, and the vicinity of the groove 1w of the upper case 1 is deformed as shown by a dotted line. Workability when the groove 1w and the end 2k of the lower case 2 are engaged with each other is facilitated.

Further, as described above, the lower case 2 is placed at the mounting position of the upper case 1 from below in the direction of the arrow (a) as shown by the dotted line in FIG. An engaging portion 23, which is a rear end portion of a U-shaped projection 1f at the rear lower side of the upper case 1, is engaged between the notch 2f and the flat portion 2j of the case 2, and further removed in the direction of arrow (c). Slide to the end 2l of the rib 2e of the lower case 2.
Comes into contact with the inside of the rib 1q of the U-shaped protrusion 1f of the upper case 1 and stops, so that the ROM 14 mounted on the connector 14a on the lower surface of the lower case 2 and the logic package 9 when the lower case 2 is attached and detached. Prevents contact with

The spacer 8 mounted on the lower surface of the logic package 9 prevents the lower case 2 from contacting the logic package 9 when the electric device is pressed from the lower surface.

Finally, the screw 31 is inserted into the hole 2 g of the lower case 2.
Through, and screwed into the screw hole 33a of the ground terminal 33 of the logic package 9 to complete the entire assembly.

FIGS. 1 to 5 show the electric apparatus in a state where the assembly is completed. Screw 31 is lower case 2
And electrical conduction through the ground terminal 33 of the logic package 9, which is incidental to the assembly of the housing structure of the electric apparatus of the present invention.

[0044]

As described above, the electrical equipment of the present invention is characterized in that the electrical equipment of the present invention is provided with a plurality of logical package holders at predetermined intervals in the front-rear direction inside the left and right sides. And an upper case made of a synthetic resin having an upper case side engaging portion, and a lower case side engaging portion and a hook portion on the left and right front portions, and this hook portion is used as a front logical package holding portion. The lower case made of a conductor that engages the lower case side engaging portion with the upper case side engaging portion by being hung and pivoted to the upper case side and pushed into the upper case, and the logic package holding portion as a guide A logic package inserted and held in the upper case is provided. At the rear of the logic package, connectors constituting an interface and a power switch are provided, and a power cable is fixed and mounted. The cage holder is moved, a ground terminal having only a function of ground connection is provided in the space after the movement, a cutout portion is provided in a rear surface portion of the lower case, and a power cable is inserted through the cutout portion. Since the bush is detachably attached, the use of screws is eliminated as compared with the conventional housing structure, and it is possible to easily assemble the electric device and improve the assembling workability. Interface can be mounted, miniaturization of the electric equipment can be realized, and assembly and disassembly become easy.

[Brief description of the drawings]

FIG. 1 is a front view of an electric apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of the electric device.

FIG. 3 is a plan view of the electric device.

FIG. 4 is a right side view of the electric device.

FIG. 5 is a rear view of the electric device.

FIG. 6 is an exploded perspective view of the electric device.

FIG. 7 is a perspective view of a rear portion of the electric device.

FIG. 8 is a perspective view of an upper case.

FIG. 9 is a perspective view of a lower case.

FIG. 10 is a perspective view of an insulating bush.

FIG. 11 is a perspective view showing an engaged state of an upper case and a lower case.

FIG. 12 is a sectional view taken along the line CC of FIG. 11;

FIG. 13 is a perspective view showing a mounted state of the logic package.

FIG. 14 is a sectional view taken along the line EE of FIG. 13;

FIG. 15 is an exploded perspective view of a conventional electric device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper case 2 Lower case 2h Notch 9 Logic package 17 Package holder 18 Power cable 18a Cable holder 19 Power switch 29, 32 Connector 33 Earth terminal 34 Insulated bush

Claims (1)

(57) [Claims] An upper case made of a synthetic resin having a plurality of logic package holding portions at predetermined intervals in the front-rear direction inside left and right side portions, and having an upper case side engaging portion;
It has a lower case side engaging part and a hook part on the left and right front parts. This hook part is hung on the front logical package holding part, turned to the upper case side, and pushed into the upper case by pushing it over. A lower case made of a conductor that engages the side engaging portion with the upper case side engaging portion, and a logic package inserted and held in the upper case by guiding the logic package holding portion, wherein the logic package includes: In addition to providing a connector and a power switch constituting an interface, fixing a power cable, moving a package holder mounted thereon, and providing a ground terminal having only a function of ground connection in a space after the movement, providing a ground terminal having only a function of ground connection. A notch is provided on the rear surface, and an insulating bush through which a power cable is inserted is detachably attached to this notch. Electrical equipment apparatus that.