JPH11298157A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress transmission of an shock stress of an electronic device when fell to electronic part units built in the device to thereby enhance an anti-shock resistance of the device. SOLUTION: The electronic device can have its anti-shock structure by means of resilience of resilient buffering members 12 and 15 abutted against electronic part units such as a liquid crystal display part weak in shock in its all directions. This causes a shock stress applied to the electronic part unit in the falling shock to be converted to a deformation energy of the buffering members 12 and 15, thus lightening the shock stress applied to the unit. Further, a special shape of the lower buffering member 12 enables the resilience of the buffering member to be secured even at low temperatures, thus increasing an anti-shock ability at low temperatures. Further, a sheet 11 disposed between the unit and buffering member 12 enables reduction of a friction resistance between the liquid crystal display and buffering member 12, and fast restoration of the buffering member to its original shape after shocked and deformed. Thereby since a display area of the liquid crystal display is also returned naturally to a visual range, user's work will not be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock-resistant structure of an electronic device, and more particularly to an electronic device suitable for application to an electronic component unit holding structure of a pen input type computer, a notebook type personal computer, and other portable electronic devices. It relates to the shock-resistant structure of equipment.

[0002]

2. Description of the Related Art A conventional electronic component unit holding structure of an electronic device is characterized in that, as disclosed in Japanese Patent Application Laid-Open No. Hei 4-237321, a buffer member is interposed at four corners of a liquid crystal display body and is mounted in the apparatus main body. It was a portable input device.

[0003]

However, in the above-mentioned prior art, when the device is dropped, an impact stress is applied to the entire device, and the impact stress propagates and acts on the liquid crystal display. At this time, the cushioning material at the four corners bends to absorb the impact, but when excessive impact stress is applied, the liquid crystal display itself also bends, and the deformation deforms the glass, substrate, or the like, or the position thereof is changed. Having.

When the cushioning member is softened, the shape of the cushioning member does not return to its original shape after deformation, and the liquid crystal display does not return to its normal position, which hinders the operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. It is an object of the present invention to alleviate the impact stress on an electronic component unit which is vulnerable to impact and to recover the shape of a cushioning member after deformation. Therefore, it is an object of the present invention to provide an electronic device having high impact resistance by means for improving the electronic device.

[0006]

According to the present invention, there is provided an electronic apparatus in which an electronic component unit is supported by an elastic buffer member and housed in a housing. The unit is characterized in that the side surface and its vicinity are vertically supported, and the left and right and front and rear sides are continuously sandwiched and supported by the buffer member.

[0007] With the above structure, since the cushioning member is supported by continuously holding the electronic component unit, the impact stress applied to the electronic component unit itself such as a liquid crystal display when the electronic device is dropped by mistake is reduced. The shock absorbing member is deformed and converted into deformation energy, and impact energy acting on the electronic component unit is significantly reduced. Especially,
Since the impact is received on a continuous surface, stress concentration can be avoided, so the amount of bending of the electronic component unit at the time of impact is reduced,
Destruction of glass, circuits, and the like can be prevented.

[0008] Further, the shock-absorbing member which comes into contact with a side portion of the electronic component unit is formed in a corrugated shape in which the electronic component unit side forms a mountain.

With the above structure, at the time of impact, the side surface of the electronic component unit is received at the tip of the corrugated shape, and the impact energy is converted into deformation energy to reduce the speed. By increasing the reaction force according to, extremely ideal deceleration can be realized,
The maximum acceleration can be kept low.

Still further, in an electronic device in which the electronic component unit is supported by an elastic buffer member and accommodated in a housing, a predetermined position of the electronic component unit is located above the electronic component unit. The housing, the cushioning member that contacts the side surface of the electronic component unit and the vicinity thereof and sandwiches the electronic component unit up and down, left and right, and front and back, and supports lower surfaces of the electronic component unit and the electronic component. The electronic component unit side has a sheet member having a smaller coefficient of friction than the buffer member side between the buffer member and the buffer member.

With the above structure, even if the electronic component unit is displaced from the buffer member below, the frictional resistance is small, so that after the impact, the electronic component unit returns to the original position by the restoring force of the surrounding buffer member.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3, an electronic device main body 1 is mainly composed of three parts, an upper housing 3, a lower housing 6, and a middle frame 5. Upper housing 3 inside electronic device main body
A liquid crystal display 10 of an electronic component unit and the like are provided between the liquid crystal display 10 and the middle frame 5, and the liquid crystal display 10 is attached to the middle frame 5 via a sheet 11 and a lower cushioning member 12 having elasticity.

The lower cushioning member 12 is made of, for example, solid rubber, and is in contact with not only the bottom surface of the liquid crystal display 10 but also the periphery thereof.
As shown in FIG. 6, the corrugated shape 12a is formed so as to be continuous.

On the bottom of the lower cushioning member 12, as shown in FIG. 4, a central portion is formed as a hollow portion 12b, and other portions are formed with a large number of holes 12c.

The lower cushioning member 12 is, as shown in FIGS.
A meat steal 12d is provided on the front and back, and a plurality of ribs 12e are formed. The rib 12e is formed to be a beam substantially perpendicular to the liquid crystal display 10, the inner wall, the boss, and the like.

The top surface of the liquid crystal display 10 is shown in FIGS.
As shown in FIG. 1, an upper cushioning member attached to an upper housing 3 supporting a filter 2 made of a transparent acrylic plate at the center for preventing dust and dirt from entering the display screen of the liquid crystal display 10. 15 is pressed and held. Therefore,
The liquid crystal display body 10 is surrounded by a lower cushioning member 12.
Since the lower surface is supported by the lower buffer member 12 and the upper surface is supported by the upper buffer member 15, it is supported in all directions only by the elastic force of the buffer member.

As shown in FIGS. 4 and 7, a thin sheet 11 made of a synthetic resin having substantially the same dimension as the surface direction of the liquid crystal display 10 is interposed between the lower buffer member 12 and the liquid crystal display 10.

The surface of the sheet 11 in contact with the liquid crystal display 10 is smooth, and the surface in contact with the lower cushioning member 12 is rough and finely undulated. Therefore, the positions of the seat 11 and the lower cushioning member 15 do not shift.

Next, the operation will be described in detail.

According to the above configuration, when the electronic device is accidentally dropped, the impact force applied to the liquid crystal display body 10 is transformed into deformation energy by deforming the lower cushioning member 12 or the upper cushioning member 15. Impact energy to the liquid crystal display 10 is significantly reduced, and damage to the liquid crystal display 10 is prevented. Further, since the liquid crystal display body 10 is held in the vertical direction and the entire periphery of the liquid crystal display body with the cushioning member, the liquid crystal display body can be held not by dots but by sides, and stress concentration can be avoided. 10, the amount of deflection is kept low,
Destruction of glass, circuits, and the like can be prevented.

Further, since the liquid crystal display body 10 is abutted and supported by the distal end portion of the lower buffer member 12 having a corrugated shape,
The impact force is greatly absorbed to prevent destruction.

More specifically, when an impact stress is applied in a substantially horizontal direction by dropping, the waveform of the impact acceleration becomes the maximum waveform at first and gradually attenuates later. Therefore, in order to keep the maximum shock acceleration applied to the liquid crystal display body 10 low, the wave of the maximum shock is softly received. In other words, the reaction force against the liquid crystal display body 10 is reduced and received, and the shock is gradually hardened while maintaining the operation time long and flexing the cushioning member. That is, it is ideal to absorb the impact stress while gradually increasing the reaction force. That is, the corrugated cushioning member receives the side surface of the liquid crystal display body 10 at the tip of the corrugated shape at the time of impact, converts the impact energy into deformation energy, and decelerates. As the deformation spreads, the reaction force increases. Therefore, extremely ideal deceleration can be realized, and the maximum acceleration can be suppressed low.

Further, the weight of the cushioning member can be reduced by forming a rib and forming a rib. By reducing the potential energy of the electronic device main body, the kinetic energy at the time of a drop collision can also be reduced, and the impact resistance performance of the electronic device main body is improved.

In general, solid rubber hardens at a low temperature and loses elasticity, so that the cushioning effect is drastically reduced. Since the lower cushioning member 12 keeps the beam shape in a rib shape,
It is possible to maintain the softness of the lower cushioning member 12 even at a low temperature, and to deform the lower cushioning member 12 at the time of impact to reduce the impact applied to the liquid crystal display 10. In general, foam rubber or gel-like rubber may be used for the cushioning member in order to secure the cushioning performance at low temperatures, but foam rubber has a long molding time, high cost, and low dimensional accuracy. Gel-like rubber is also expensive, too flexible and has low dimensional accuracy, and the shape returns slowly after deformation. Therefore, foamed rubber or gel-like rubber is not suitable for the electronic device in which it is important to keep the display area of the liquid crystal display body 10 at a regular position in the visible range at the time of use. Is excellent in returning the display area to a position in the visible range, and the buffering performance is also high.

Further, the liquid crystal display body 10 includes the upper cushioning member 1.
5, the position is often shifted from a predetermined display area and does not return to the visible range after a drop impact, but the sheet 11 in contact with the liquid crystal display 10 has a smooth surface 11. As a result, the frictional resistance between the sheet 11 and the liquid crystal display body 10 is extremely low, so that the display screen position is immediately restored and does not hinder the work of the user.

Furthermore, if the electronic component unit does not return to the normal position after the drop impact, the deformation area of the shock absorbing member at the time of impact becomes smaller in a state where the surrounding shock absorbing member remains compressed. Again, when impact stress is applied,
Although the original buffering effect cannot be obtained, the present invention always secures the electronic component unit to a predetermined position, so that it is possible to secure impact resistance when dropped. In addition, since the surface of the sheet in contact with the electronic component unit has a rough and fine undulation, the frictional resistance to the synthetic resin of the electronic component unit is extremely low, and the opposite buffer member side has a smooth surface. The frictional resistance to rubber is significantly higher.
That is, even if the electronic component unit moves at the time of impact, the sheet does not shift with respect to the cushioning member due to the difference in frictional resistance between the front and back sides.

Although the embodiment of the present invention employs a sheet made of a synthetic resin, the sheet may be made of any material, such as metal, as long as it can ensure slippage.

In this specification, a liquid crystal display is taken as an example of an electronic component unit that is vulnerable to impact. However, the present invention can be similarly applied to other electronic component units such as a touch panel and a hard disk drive.

In this specification, a liquid crystal display is described as an example of an electronic component unit that is vulnerable to impact. However, the present invention can be similarly applied to other electronic component units such as a touch panel and a hard disk drive.

Further, as an example using the sheet, the case where the buffer member is provided on the entire circumference is taken as an example, but the buffer member may be intermittently arranged.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A pen input type computer of about 3 kg
In a test in which the impact-resistant structure according to the present invention was dropped from a height of cm, a test was performed by comparing the test with a test sample that did not.
As a result, in the case where the structure of the present invention was not adopted, a part of the internal electronic component unit was damaged, but in the case where the structure of the present invention was adopted, the electronic component unit was not damaged.

[0032]

As described above, according to the present invention, in an electronic device in which an electronic component unit is supported by an elastic cushioning member and housed in a housing, the electronic component unit has a side surface and a vicinity thereof. The upper and lower, left and right and front and back are continuously sandwiched and supported by the cushioning member, so when an electronic device is accidentally dropped, the impact stress applied to the electronic component unit itself deforms the cushioning member. The impact energy converted into deformation energy and acting on the electronic component unit is significantly reduced.

According to a second aspect of the present invention, the shock-absorbing member which comes into contact with a side portion of the electronic component unit is formed in a corrugated shape in which the side of the electronic component unit is formed as a peak, so that it can be used in the event of an impact. By receiving the side of the electronic component unit at the tip of the wavy shape, converting the impact energy into deformation energy, decelerating, and during the deformation, increasing the reaction force as the deformation reaches the skirt of the wavy shape Extremely ideal deceleration can be realized, the maximum acceleration can be kept low, and the impact resistance can be greatly improved.

Further, in an electronic device in which the electronic component unit is supported by an elastic cushioning member and housed in a housing, a predetermined position of the electronic component unit is located above the electronic component unit. The housing, the cushioning member that contacts the side surface of the electronic component unit and the vicinity thereof and sandwiches the electronic component unit up and down, left and right, and front and back, and supports lower surfaces of the electronic component unit and the electronic component. Since the electronic component unit side and the sheet member having a smaller friction coefficient than the buffer member side between the buffer member and the buffer member, even if the electronic component unit is displaced from the lower buffer member, the friction resistance is small. Therefore, after the impact, the shock absorber returns to the original position by the restoring force of the surrounding cushioning member.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an embodiment of an electronic device employing a shock-resistant structure according to the present invention.

FIG. 2 is a front view of the electronic device of FIG.

FIG. 3 is an exploded perspective view of the electronic device of FIG.

FIG. 4 is an exploded perspective view illustrating a peripheral structure of a buffer member and a liquid crystal display according to the present invention.

5 is a perspective view showing an assembled state of the exploded perspective view of FIG. 4;

FIG. 6 is a partially enlarged view of FIG. 5;

FIG. 7 is a sectional view taken along line VV in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic device main body 2 Filter 3 Upper housing 4 Waterproof packing 5 Middle frame 6 Lower housing 7 Buffer protector 10 Liquid crystal display 11 Sheet 12 Lower buffering member 12a Corrugated shape 12b Cavity 12c Hole 12d Meat steal 12e Rib 15 Upper buffering member 20 Switch key

Claims (3)

[Claims] An electronic device in which an electronic component unit is accommodated in a housing supported by an elastic cushioning member, wherein the electronic component unit has a side surface and a vicinity thereof, which are up and down.
An electronic device, wherein left and right and front and rear sides are continuously sandwiched and supported by the buffer member. 2. The electronic apparatus according to claim 1, wherein the cushioning member that comes into contact with a side portion of the electronic component unit is formed in a corrugated shape in which the electronic component unit side forms a mountain. 3. An electronic device in which an electronic component unit is supported by an elastic cushioning member and accommodated in a housing, wherein the electronic component unit is located above the electronic component unit and a predetermined position of the electronic component unit is indicated on the electronic device. A housing, abutting against a side surface of the electronic component unit and its vicinity,
The cushioning member that sandwiches the electronic component unit up and down, left and right, and front and rear, and the electronic component unit side is higher than the cushioning member side between the electronic component unit and the cushioning member that supports a lower surface of the electronic component. An electronic device comprising: a sheet member having a small coefficient of friction.