JP2001084056A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic equipment having structure capable of satisfying the feeling of key input from a keyboard without increasing the set thickness of the equipment, preventing the direct application of shock force and load causing failures to a printed board and securing the parts packaging area of the printed board. SOLUTION: A shock absorbing member 5 pierced into hole parts 3a formed on the printed board is arranged between the bottom of an electronic equipment casing 1 and the keyboard 4 and load applied at the time of depressing keys on the keyboard 4 is received by the bottom of the casing 1. Thereby shock force and load due to the depression of keys are not directly transmitted to the printed board 3 packaging electric circuit parts on its surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device such as a notebook personal computer, and more particularly, to an electronic device having a keyboard disposed above a printed circuit board on which electric circuit components are mounted.

[0002]

2. Description of the Related Art Conventionally, most electronic devices such as notebook personal computers have a structure in which a keyboard is arranged above a printed wiring board on which electric circuit components such as a CPU (Central Control Processing Unit) are mounted. ing.

Hereinafter, the structure of a conventional electronic device such as a notebook personal computer will be described with reference to the drawings.

FIG. 3 is a side sectional view showing the structure of a conventional electronic device. In the figure, reference numeral 31 denotes an electronic device housing,
A printed wiring board 33 on which electric circuit components such as U32 are soldered is mounted. Above the printed circuit board 33, a keyboard 34 for inputting by keying is provided.
Is arranged. The keyboard 34 includes a plurality of keys 34.
a, a resin frame 34b, a film-like substrate 34c on which a key switch pattern is printed, and a metal base 34d. The keyboard 34 has its periphery supported by the holder 31a of the electronic device housing 31 and its central portion supported by the printed wiring board 33 via a spacer 35 attached to the printed wiring board 33 by bonding or the like. Supporting the vicinity of the central portion of the keyboard 34 has been reduced in weight and thickness in recent years in order to make portable electronic devices such as notebook personal computers. In the keyboard, a resin frame or metal base is also used. This is because it is thin and easy to bend. If the keyboard bends, the feeling of key input becomes worse.

In the conventional electronic device configured as described above, when an input is performed by tapping the key 34a of the keyboard 34, the impact force and the load due to the keying are reduced by the holder portion 31a of the electronic device housing 31 and the spacer 35. Through the printed wiring board 33.

[0006]

The above-mentioned conventional electronic devices have the following problems.

Since the printed circuit board receives the load at the time of keyboard input, the impact force and the load are applied to the printed circuit board every time the key is input, and the CP mounted by soldering is applied.
Electric circuit parts such as U32 are peeled off by soldering (repeated fatigue)
Cause failure.

As a countermeasure for this, the following method has conventionally been taken.

(1) Extending the holder of the electronic device housing,
Fully support the keyboard.

(2) As shown in FIG.
The boss 41a is set up from the bottom of the
Is sandwiched between bosses 43 a attached to the keyboard 43, and further tightened with screws 44.

(3) As shown in FIG.
A boss 51a and a rib 51b are erected from the bottom of the printed circuit board 1 to penetrate the printed wiring board 52 and directly receive the lower surface of the keyboard 53.

However, in the case of the above method (1),
The set thickness of the electronic device increases by an amount corresponding to the thickness forming the holder portion, which goes against recent thinning. In the case of (2), since the boss diameter is large, the component mounting area on the printed wiring board 42 is reduced. In the case of (3), as shown in FIG. 5, when the printed wiring board 52 is attached to the electronic device housing 51, there is an external I / FCN (interface connector) 54 disposed on the end face of the printed wiring board 52. The electronic device housing 51 is mounted while being rotated so as to pass through the opening 51c, and the area of the hole 52a through which the printed wiring board 52 penetrates increases.
The component mounting area on the printed wiring board 52 is reduced.

The present invention solves the above-mentioned conventional problems, and does not increase the thickness of the set of electronic equipment, satisfies the feeling of key input of a keyboard, and provides a printed wiring board that causes a failure. It is an object of the present invention to provide an electronic device having a structure in which an impact force and a load are not directly applied and a component mounting area of a printed wiring board can be secured.

[0014]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to an electronic device housing having a printed circuit board on which electric circuit components are mounted, and a keyboard disposed above the printed circuit board. And a shock absorbing member that penetrates a hole provided in the printed wiring board between the electronic device housing bottom surface and the keyboard.

Thus, the load at the time of keyboard input is received by the bottom of the housing of the electronic device, so that the impact force and the load of the key input can be prevented from being directly transmitted to the printed circuit board. An electronic device having a structure capable of securing a component mounting area of a printed wiring board without impairing a feeling can be obtained.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a printed wiring board on which an electric circuit component is mounted, a housing containing the printed wiring board and the like, and a printed circuit board mounted above the printed wiring board. An electronic device comprising: a keyboard arranged; and a shock absorbing member that penetrates a hole provided in the printed wiring board between the keyboard bottom surface and the keyboard. This has the effect of not increasing the thickness of the set, satisfying the feeling at the time of key input of the keyboard, and not directly applying a load to the printed wiring board which causes a failure.

According to a second aspect of the present invention, in the electronic device of the first aspect, the shock absorbing member is disposed near a central portion of the keyboard, and can effectively support the keyboard. This has the effect of minimizing the size of the shock absorbing member.

According to a third aspect of the present invention, in the electronic device of the first aspect, the shock absorbing member is not fixed to the keyboard and the housing, and the hole provided in the printed wiring board is provided. Since the size of the printed wiring board can be minimized, it has an effect that a component mounting area of the printed wiring board can be secured.

According to a fourth aspect of the present invention, in the electronic device according to the first aspect, the shock absorbing member comprises a shaft-shaped component and a plate-shaped component. Since the size of the provided hole can be minimized, an effect is obtained that a component mounting area of the printed wiring board can be secured.

According to a fifth aspect of the present invention, in the electronic device according to the first aspect, the shock absorbing member includes an elastic body capable of absorbing a shock. However, there is an effect that an impact force and a load at the time of keyboard input are hardly applied.

According to a sixth aspect of the present invention, in the electronic device according to the first aspect, the shock-absorbing member is formed as a single piece. It has the effect that it can be provided.

According to a seventh aspect of the present invention, in the electronic device according to the first aspect, a disk drive device is arranged on the printed wiring board, and the electronic apparatus is affected by an impact on the printed wiring board. If an easy-to-use disk drive device is arranged, the shock from the keyboard is reduced by the shock absorbing device, so that the disk drive device is not directly shocked.

An embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is an internal configuration diagram of an electronic apparatus according to an embodiment of the present invention, and FIG. 2 is a side sectional view. In FIG. 1, reference numeral 1 denotes an electronic device housing which has a built-in printed wiring board 3 on which electric circuit components such as a CPU 2 are soldered and mounted. In addition, above the printed wiring board 3,
A keyboard 4 for inputting by keying is provided.
The keyboard 4 includes a plurality of keys 4a, a resin frame 4b, a film-like substrate 4c on which a key switch pattern is printed,
And a metal base 4d. The periphery of the keyboard 4 is supported by the holder 1 a of the electronic device housing 1. These configurations are the same as the conventional example. Reference numeral 5 denotes a shock absorbing device, which includes a metal support shaft 5a, a support plate 5b, and an elastic body 5c, and is arranged between the lower surface of the keyboard 4 and the lower surface of the electronic device housing 1.
The shock absorbing device 5 is disposed on the printed wiring board 3 such that the support shaft 5a and the support plate 5b pass through a plurality of holes 3a provided in the printed wiring board 3. Reference numeral 6 denotes a hard disk drive (HDD) as a disk drive, which is mounted on the printed circuit board 3.

An electronic device having the above-described configuration will be described.

First, the impact force and the load due to the key input of the keyboard 4 are applied to the metal base 4d to try to deflect the keyboard 4; The deformation is suppressed by the device 5. Then, the impact force is reduced by the elastic body 5 c and transmitted to the bottom surface of the electronic device housing 1. At this time, the support shaft 5 a and the support plate 5 b are
a, the impact buffer device 5 does not come into contact with the printed wiring board 3, so that no load is directly applied to the printed wiring board 3,
A load is not applied to a soldered portion of an electric circuit component such as the CPU 2 soldered and mounted on the printed wiring board 3 to cause fatigue failure, thereby preventing a defective soldering.

Further, since the shock absorbing member is disposed near the center of the keyboard, the shock absorbing member can be effectively supported at the central portion where the deflection of the keyboard becomes large, and the size of the shock absorbing member can be minimized. .

Further, since the shock absorbing member is a separate component that is not fixed to the keyboard or the housing of the electronic device, when the printed wiring board to which the external I / FCN is mounted is attached to the housing of the electronic device, the conventional shock absorbing member is used. It is not necessary to avoid the rotation operation as in 5, and the size of the hole provided in the printed wiring board can be minimized, and the component mounting area of the printed wiring board can be secured.

Also, since the portion of the shock absorbing member penetrating through the printed wiring board for support has an axial shape and a plate shape, the size of a hole provided in the printed wiring board can be minimized, and The component mounting area of the board can be secured.

By mounting a disk drive device such as the HDD device 6 which is susceptible to impact on the printed circuit board 3, no impact force and load due to key input is applied. Can be arranged in a place where a sufficient gap cannot be secured without any problem.

In this embodiment, the elastic member is attached to the shock absorbing member. However, even if the elastic member is not attached, only the impact force and load at the time of inputting a key on the bottom of the electronic device housing are not reduced. Therefore, the effect on the printed wiring board is hardly changed.

The shock absorbing member may be formed as a single piece. In this case, a single component can be provided with a plurality of supporting portions.

[0033]

As described above, according to the present invention, an electronic equipment housing incorporating a printed wiring board on which electric circuit components are mounted, a keyboard disposed above the printed wiring board, and an electronic equipment housing The shock absorbing member that penetrates the hole provided in the printed wiring board is provided between the bottom surface and the keyboard. Also, an electronic device having a structure in which the load can be prevented from being directly transmitted to the printed wiring board, the set thickness is not increased, the feeling of key input is not impaired, and the component mounting area of the printed wiring board can be secured.

[Brief description of the drawings]

FIG. 1 is an internal configuration diagram of an electronic device according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the electronic apparatus according to one embodiment of the present invention;

FIG. 3 is a side sectional view of a conventional electronic device.

FIG. 4 is a side sectional view of a conventional electronic device.

FIG. 5 is a side sectional view of a conventional electronic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic device housing 3 Printed wiring board 3a Hole 4 Keyboard 5 Impact buffer 5a Support shaft 5b Support plate 5c Elastic body 6 HDD device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor ▲ Yoshi ▼ Seiji 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 5B020 DD02 DD51

Claims (7)

[Claims] A printed circuit board on which an electric circuit component is mounted; a housing including the printed wiring board; a keyboard disposed above the printed wiring board; a bottom surface of the housing and the keyboard; And an impact buffer member penetrating through a hole provided in the printed wiring board. 2. The electronic device according to claim 1, wherein the shock-absorbing member is disposed near a central portion of the keyboard. 3. The electronic device according to claim 1, wherein the shock absorbing member is not fixed to the keyboard and the housing. 4. The electronic device according to claim 1, wherein the shock absorbing member comprises a shaft component and a plate component. 5. The electronic device according to claim 1, wherein the shock absorbing member includes an elastic body capable of absorbing a shock. 6. The electronic device according to claim 1, wherein the shock absorbing member is formed integrally. 7. The electronic device according to claim 1, wherein a disk drive device is disposed on the printed wiring board.