JP2003031962A - Structure of portable type folding electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce restrictions in cosmetic design, and at the same time, reduce cost without generating both of deflection in a built-in printed-wiring board and deficiency in strength at a hinge section. SOLUTION: The structure of portable-type folding electronic equipment where upper- and lower-side sections 40 and 50 are folded into two, and an LCD is provided at the upper-side section is equipped with cases 11, 14, 19, and 25 made of resin, and an LCD frame 16 that is incorporated into the case at the upper-side section, put an LCD 15, and is formed by a stiff material, so that an entire printed-wiring board 18 is covered. When connecting the cylinder section of upper-side hinge sections 12, 13, 20, and 21 at the upper-side section to the cylinder section of lower-side hinge sections 28, 29, and 30 by inserting a rod-like hinge unit 22, the hinge section puts an inside reinforcement section 17 of the LCD frame formed by the stiff material into the space of the cylinder section at the upper-side hinge section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a portable folding electronic device which is folded in two. In particular, the present invention relates to the structure of a portable folding electronic device that can ensure the rigidity of a printed wiring board incorporated when a housing is made of resin.

[0002]

2. Description of the Related Art Conventionally, a folding electronic device has been folded into two parts, an upper part and a lower part. When the folded electronic device is unfolded, the lower part is normally held by the palm and the end of the upper part is held. It is well known that pushing up with a finger and stopping the deployment with a stopper stop the pushing up of the finger and start using it.

Further, a printed wiring board is built in the folding electronic device, a housing having rigidity is provided outside the folding electronic device, and a hinge portion for folding is provided in the folding electronic device. It is known that the device is made thinner in consideration of portability. In addition, the housing of the folding electronic device is generally made of metal using magnesium die casting to ensure rigidity.

When the folded electronic device is unfolded from the folded state, the upper part of the folding electronic device is pushed up by a finger, and the stopper stops the unfolding.
A bending moment may be generated around the stopper of the hinge as a fulcrum, and bending may occur at the upper side of the folding electronic device. The printed wiring board is protected by a rigid magnesium die-cast housing so that the built-in printed wiring board does not bend due to this bending. If the flexure of the printed wiring board is left as it is, it may cause a failure of the circuit formed on the printed wiring board.

Further, the hinge part of the folding electronic device is
Since it is configured as a part of the housing, the rigidity of the housing of the magnesium die casting ensures the strength as a hinge. It should be noted that if the hinge portion is simply made of resin, the strength of the hinge portion will be insufficient and the hinge may be damaged. Therefore, in order to compensate for this shortage, it is necessary to use a separate piece of metal reinforcing component for the hinge portion, which increases the number of components and the number of assembly steps.

[0006]

However, the magnesium die-casting forming the casing of the folding electronic equipment has many design restrictions due to productivity problems and the cost is high. Therefore, in view of the above problems, the present invention is a portable type that can reduce design restrictions and reduce costs without causing both the bending of the built-in printed wiring board and the insufficient strength of the hinge portion. It is intended to provide a structure of a folding electronic device.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a portable folding electronic device having an upper portion and a lower portion folded in two by a hinge portion and having an LCD on the upper portion. In the structure, a housing formed of a resin and a housing built in the housing of the upper side, the LCD is attached, and the LCD is formed of a rigid material so as to cover the entire printed wiring board
A structure of a portable folding electronic device, comprising: a frame.

By this means, the housing is made of resin, and the flexure of the built-in printed wiring board is eliminated when a bending moment is generated without relying on the rigidity of the housing as in the conventional case. It is possible to reduce the cost and reduce the cost. Further, in the hinge portion, when the tubular portion of the upper hinge portion of the upper portion and the tubular portion of the lower hinge portion of the lower portion are inserted and joined by inserting the rod-shaped hinge unit, the tubular portion of the upper hinge portion An internal reinforcing portion of the LCD frame formed of a rigid material is put in the space.

By this means, it is possible to further solve the problem of insufficient strength of the hinge portion due to the use of resin in the housing, reduce restrictions on the housing design, and reduce costs. Since the strength can be secured without using a reinforcing member of another piece as in the conventional case, the number of parts and the number of assembling steps can be reduced. Preferably, the LCD frame is made of a metal material, and more preferably, the LCD frame is made of a magnesium die-cast material.
Further, preferably, the LCD frame is made of a ceramic material. These materials can both prevent the printed wiring board from bending and reinforce the hinge portion.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is an assembled perspective view showing a schematic structure of a portable folding electronic device according to the present invention, and FIG. 2 is a partial vertical cross-sectional view of the portable folding electronic device in FIG.

As shown in FIG. 1, a portable folding electronic device is generally composed of an upper part 40 and a lower part 50 that are folded in two, and a hinge part 6 that connects the upper part 40 and the lower part 50.
It consists of zero. The portable folding electronic device is provided with an upper front case 11 of the upper side 40, a lower front case 14 of the lower part 50, rear covers 19 and 25 of the upper front case 11 and the lower front case 14, and the upper front case 11 is provided. The lower front case 14 and the rear covers 19 and 25 are made of a resin material and constitute a casing of a folding electronic device to be molded.

Further, the upper front case 11 has an LC
The D display window portion 26, the upper half hinge portions 12, 13 and the like are molded, and the lower front case 14 is formed with a plurality of button window portions 27, lower hinge portions 28, 29, 30 and the like. Further, the rear cover 19 has an upper front case 1
The upper half-hinge portions 20 and 21 are provided so as to correspond to the upper half-hinge portions 12 and 13, respectively.

Further, the rear covers 19 and 25 are provided with a plurality of screw bosses 33 for fastening the upper front case 11 and the lower front case 14, respectively.
LC is provided between the upper front case 11 and the rear cover 19.
The D section 15, the LCD frame section 16 and the printed wiring board 18 are provided, and the printed wiring board 24 is provided between the lower front case and the rear cover 25.

The LCD 15 is attached to the LCD frame 16 and displays through the LCD display window portion 26. A plurality of buttons (not shown) are mounted on the printed wiring board 24, and the plurality of buttons are provided in the button window portion 27 of the lower front case 14.
Stick out from. The LCD frame 16 is made of metal such as magnesium die cast and has rigidity. The LCD mounting portion 3 for sticking the LCD portion 15 on the LCD frame 16
1 is provided, and further, an internal reinforcing portion 17 is provided.

The LCD frame 16 covers almost the entire printed wiring board 18 and is attached to the printed wiring board 18.
Further, the upper front case 11 and the rear cover 19, and the lower front case 14 and the rear cover 25 are provided with a plurality of screws 2.
It is concluded at 3. Next, the hinge portion 60 is composed of the upper half hinge portions 12, 13, 20, 21 and the internal reinforcing portion 17 of the LCD frame 16, the lower hinge portions 28, 29, 30 and the rod-shaped hinge unit 22.

In this case, the upper half hinges 12, 13, 2
The tubular portion of the internal reinforcing portion 17 is inserted into the tubular portion formed by 0 and 21. Further, the tubular portions of the upper half hinge portions 12, 13, 20, 21 and the lower hinge portions 28, 2 in which the internal reinforcing portion 17 is inserted.
The tubular portions 9 and 30 are fitted to each other to form a single tubular body, and the hinge unit 22 is inserted into the tubular portion to form the hinge portion 60. The internal reinforcing portion 17 is composed of a resin, and the upper half hinge portions 12 and 13 of the upper front case 11 and the rear cover 19 are provided.
The upper side strength of the hinge portion 60 formed by 0 and 21 is secured.

Next, a procedure for assembling the portable folding electronic device will be described. The upper front case 11 of the upper part 40 and the lower front case 14 of the lower part 50 are joined by the hinge unit 22 to form a front case assembly. Next, LCD made of metal such as magnesium die casting
After the LCD section 15 is attached to the frame 16, the LCD frame 16 covering almost the entire printed wiring board 18 is attached to the printed wiring board 18.

In this state, the LCD section 15, the LCD frame 16, the printed wiring board 18, and the printed wiring board 24 are assembled into the front case assembly, the rear cover 19 is fitted to the upper front case 11, and the rear cover 25 is fitted to the upper front. After fitting the case 14, it is fastened with screws 23. As a result, the LC in the housing of the upper front case 11 is
The D frame 16 is fixed. At this time, the printed wiring board 1
The rigidity of No. 8 is ensured by the LCD frame 16 made of metal. As shown in FIG. 2, the upper front case 1
When a force is applied to the tip of No. 1 to expand from the folded state and the expansion is stopped by the stopper 32, a bending moment is generated in the upper portion 40 with the stopper 32 as a fulcrum.

In this case, even if the printed wiring board 18 itself does not have rigidity, the printed wiring board 18 does not bend due to the rigidity of the LCD frame 16. Further, due to the generation of the bending moment, bending stress is generated in the vicinity of the hinge portion 60 of the upper portion 40. In this case, as described above, the tubular shape is composed of the upper half hinge portion 12 of the upper front case 11, the half hinge portion 20 of the rear cover 19, the upper half hinge 13 of the upper front case 11, and the half hinge 21 of the rear cover 19. The internal reinforcing portion 17 of the LCD frame 16 is provided in the space.
Has a structure in which the strength of the hinge portion 60 is secured.

Therefore, the internal reinforcing portion 17 increases the rigidity, and the bending stress decreases in inverse proportion to the rigidity. Thus, according to the present invention, the housing is made of resin, and the LCD frame 1 made of metal when a bending moment is generated.
6, the rigidity is secured, the bending of the printed wiring board 18 is prevented, and the bending stress in the vicinity of the hinge portion 16 is reduced without relying on the rigidity of the housing as in the conventional case. It has become possible to improve the degree of freedom in designing the upper front case 11, the lower front case 14, and the rear covers 19 and 25 constituting the above.

Even if a load is applied to the hinge portion 60, it is possible to obtain the same strength as in the case where the casing is made of magnesium die cast. Furthermore, since the strength can be secured to the hinge portion 60 without using a separate reinforcing member as in the related art, the number of parts and the number of assembling steps can be reduced. In addition, as another embodiment of the present invention, even if the LCD frame 16 is made of a ceramic material, the same effect as the above can be obtained.

[0022]

As described above, according to the present invention,
The housing formed of resin and the housing on the upper side are
Since a CD is attached and an LCD frame formed of a rigid material is provided so as to cover the entire printed wiring board, the casing is made of resin when a bending moment occurs, so that the conventional casing The bending of the built-in printed wiring board can be eliminated without depending on the rigidity of the housing, the restriction on the design of the housing can be reduced, and the cost can be reduced.

Further, the hinge portion has a tubular portion of the upper hinge portion, and a tubular portion of the lower hinge portion of the lower portion, when the rod-shaped hinge unit is inserted and joined. Since the internal reinforcing part of the LCD frame made of a rigid material is put in the space of, the lack of strength of the hinge part due to the resinization of the housing can be solved, and the restriction on the design of the housing can be reduced, Moreover, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is an assembled perspective view showing a schematic structure of a portable folding electronic device according to the present invention.

FIG. 2 is a partial vertical cross-sectional view of the portable folding electronic device in FIG.

[Explanation of symbols]

11 ... Upper front case 12, 13, 20, 21 ... Upper half hinge part 14 ... Lower front case 15 ... LCD section 16 ... LCD frame 17 ... Internal reinforcement 18, 24 ... Printed wiring board 19, 25 ... Rear cover 22 ... Hinge unit 23 ... screw 28, 29, 30 ... Lower hinge part 31 ... LCD mounting part 32 ... Stopper 33 ... Screw boss 40 ... Upper part 50 ... Lower part 60 ... Hinge part

Continued front page    F-term (reference) 4E360 AB12 AB16 AB42 BB02 BB17                       BB22 EA11 EC14 EC16 ED02                       ED04 ED27 GA08 GA12 GB26                       GC04 GC06                 5K023 AA07 BB04 DD08 HH07 LL01                       LL06 QQ02 QQ06

Claims (5)

[Claims] 1. In a structure of a portable folding electronic device having an upper part and a lower part folded in two by a hinge part and having an LCD on the upper part, in a structure of a resin, a housing formed of resin, Built in the case, pasted the LCD,
A structure of a portable folding electronic device, comprising: an LCD frame formed of a rigid material so as to cover the entire printed wiring board. 2. In the hinge part, when the cylindrical part of the upper hinge part of the upper part and the cylindrical part of the lower hinge part of the lower part are connected by inserting a rod-shaped hinge unit, An internal reinforcing portion of the LCD frame formed of a rigid material is inserted in the space of the tubular portion.
The structure of the portable folding electronic device according to claim 1. 3. The structure of the portable folding electronic device according to claim 1, wherein the LCD frame is made of a metal material. 4. The structure of the portable folding electronic device according to claim 1, wherein the LCD frame is made of a magnesium die-cast material. 5. The structure of the portable folding electronic device according to claim 1, wherein the LCD frame is made of a ceramic material.