JP2009015390A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment for improving the shock resistance of a casing with a simple structure. <P>SOLUTION: This electronic equipment is provided with a printed circuit board 22; and a casing 21 having a first storage part 21C in which the printed circuit part 22 is stored, a second storage part 21D which has become hollow, and a partition wall 21E for dividing the first storage part 21C and the second storage part 21D. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device with improved impact resistance of a housing.

  For example, the following is disclosed as an electronic device with improved impact resistance with respect to the housing. The electronic device includes a housing, a buffer portion in which a plurality of concave portions having a polygonal pyramid shape are formed on at least a part of an inner surface of the housing, and a film for preventing fragments from being scattered on a surface provided with the recess portion of the buffer portion And.

In this electronic device, by providing a recess in the buffer portion, stress concentration is easily generated in the buffer portion. Thereby, when an impact is applied to the buffer portion, a crack is positively generated in the buffer portion, and energy is consumed in the buffer portion by propagating the crack one after another to adjacent recesses. As a result, the impact is absorbed and the electronic components inside the housing are prevented from being damaged (see, for example, Patent Document 1).
Japanese Patent Application Laid-Open No. 2005-19866

  However, in the above-described conventional electronic device, it is necessary to attach a film for preventing debris scattering to the inner surface of the casing in the assembling process, and the assembling work is complicated. Moreover, it is necessary to provide a film for preventing fragment scattering separately, which increases the number of parts and complicates the structure.

  The objective of this invention is providing the electronic device which can improve the impact resistance of a housing | casing with a simple structure.

  In order to achieve the above object, an electronic apparatus according to one aspect of the present invention includes a printed circuit board, a first housing part in which the printed circuit board is housed, a hollow second housing part, A housing having a partition wall that partitions the first housing portion and the second housing portion.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which can improve the impact resistance of a housing | casing with a simple structure can be provided.

  Hereinafter, a first embodiment of an electronic device will be described with reference to FIGS. 1 to 4. As shown in FIG. 1, a portable computer that is an example of an electronic device is a so-called notebook personal computer.

  As shown in FIG. 1, the portable computer 11 includes a main body unit 12, a display unit 13, and a hinge mechanism 14 that connects the main body unit 12 and the display unit 13. The hinge mechanism 14 supports the display unit 13 and can rotate the display unit 13 with respect to the main unit 12. More specifically, the display unit 13 has a first position P1 that covers the main unit 12 as shown in FIG. 2, and a second position that stands up with respect to the main unit 12 as shown in FIG. It can rotate between position P2. The display unit 13 includes a display 15 and a latch 16. The display 15 is composed of a liquid crystal display, for example.

  The main unit 12 includes a resin casing 21, a keyboard 26, a touch pad 27 that is a pointing device, and buttons 28. But the housing | casing 21 is not limited to the thing made from resin. The housing | casing 21 may be comprised with the magnesium alloy, for example.

  The main unit 12 further includes a printed circuit board 22 that is accommodated in the housing 21. The printed circuit board 22 includes a printed wiring board 23 formed by laminating copper wiring layers and a circuit component 24 mounted on the printed wiring board 23.

  As shown in FIG. 1, the housing 21 has an upper case 21A and a lower case 21B. On the inner surfaces of the upper case 21A and the lower case 21B, for example, conductive films (not shown) made of a copper nickel material are formed. This conductive film prevents radio waves generated from the circuit components 24 in the casing 21 from leaking out to the surroundings.

  As shown in FIGS. 1 and 3, the housing 21 includes a first housing portion 21 </ b> C in which the printed circuit board 22 is housed, a second housing portion 21 </ b> D that is hollow, and a first housing portion 21 </ b> C. It has a partition wall 21E that partitions the second storage portion 21D, a peripheral wall 21F that surrounds the periphery of the first storage portion 21C, and a bumper wall 21G that surrounds the periphery of the second storage portion 21D.

  As shown in FIG. 1, the first accommodating portion 21C is formed in a square shape, and the printed circuit board 22 is accommodated therein. The second accommodating portions 21D are arranged at four locations corresponding to the four corners of the first accommodating portion 21C. As shown in FIG. 3, the second storage portion 21 </ b> D is formed in an “L” shape. The second accommodating portion 21D serves as a buffer portion when an impact is applied to the housing 21. You may arrange | position the elastic shock absorbing material for absorbing an impact in 2nd accommodating part 21D.

  The peripheral wall 21F and the bumper wall 21G are formed with the same thickness dimension. The bumper wall 21G is formed so as to protrude outward with respect to the peripheral wall 21F. As shown in FIG. 2, the bumper wall 21G projects outward from the display unit 13 in the extending direction of the display unit 13 at the first position P1.

  The partition wall 21E is integrally formed with the peripheral wall 21F and the bumper wall 21G with resin. The thickness dimension of the partition wall 21E is smaller than the thickness dimension of the bumper wall 21G.

  Next, with reference to FIG. 4, an operation when an impact is applied to the portable computer 11 such as when the portable computer 11 is dropped will be described. If the portable computer 11 is accidentally dropped, it usually collides with the floor in the second accommodating portion 21D and the bumper wall 21G located at the four corners of the casing 21. At that time, when an impact within a range allowable to the bumper wall 21G is applied, the bumper wall 21G bends and absorbs the impact.

  On the other hand, when the allowable limit of the bumper wall 21G is exceeded, the bumper wall 21G is cracked or a part of the bumper wall 21G is damaged to absorb the impact. 21 C of 1st accommodating parts of the housing | casing 21 are partitioned off from 2nd accommodating part 21D by the partition 21E. For this reason, the fragment 25 of the housing | casing 21 produced at this time does not approach into 2nd accommodating part 21D. This prevents a situation in which the conductive film included in the fragments 25 adheres to the printed circuit board 22 and causes a short circuit in the printed circuit board 22.

  Further, since the bumper wall 21G protrudes outside the display unit 13 at the first position P1, the display unit 13 does not directly contact the floor when the portable computer 11 is dropped. For this reason, an impact is not directly applied to the display unit 13, and the situation where the display 15 is damaged is prevented as much as possible.

  The above is the first embodiment of the portable computer 11. According to the first embodiment, the portable computer 11 includes a printed circuit board 22, a first accommodating portion 21C in which the printed circuit board 22 is accommodated, a hollow second accommodating portion 21D, and a first accommodating portion. And a housing 21 having a partition wall 21E for partitioning the housing portion 21C and the second housing portion 21D.

  According to this configuration, since the interior of the housing 21 is partitioned into the first storage portion 21C and the second storage portion 21D by the partition wall 21E, the second storage portion is dropped when the portable computer 11 is dropped. It can prevent that the fragment | piece 25 of the housing | casing 21 produced from 21D enters in the 1st accommodating part 21C. As a result, it is possible to prevent the printed circuit board 22 from being damaged.

  In this case, the second storage portion 21D is disposed at the four corners of the first storage portion 21C. According to this configuration, it is possible to protect the printed circuit board 22 in the first housing portion 21 </ b> C by arranging the second housing portion 21 </ b> D at the corner portion of the housing 21. Accordingly, even when the portable computer 11 is dropped at any angle, the portable computer 11 comes into contact with the floor via the second storage portion 21D, and the printed circuit board 22 in the first storage portion 21C is touched. The applied impact can be reduced. In addition, it is possible to minimize the size of the portable computer 11 by minimizing the location where the second storage portion 21D is provided.

  In this case, the display unit 13 provided independently of the housing 21, the housing 21 and the display unit 13 are coupled, and the first position P <b> 1 covering the housing 21 and the housing 21 are raised. And a hinge mechanism 14 that supports the display unit 13 so as to rotate between the second position P2 and the housing 21 includes a bumper wall 21G that surrounds the second housing portion 21D. The bumper wall 21G protrudes outward from the display unit 13 at the first position P1.

  According to this configuration, when the portable computer 11 is dropped, it is possible to prevent the display unit 13 from directly contacting the floor and damaging the display 15.

  In this case, the thickness dimension of the partition wall 21E is smaller than the thickness dimension of the bumper wall 21G. The partition wall 21E only needs to prevent the fragments 25 of the bumper wall 21G from entering the first accommodating portion 21C. According to this configuration, the casing 21 can be reduced in weight by the thickness of the partition wall 21E. For this reason, the portable computer 11 as a whole can be reduced in weight.

  Next, a second embodiment of the portable computer 31 will be described with reference to FIGS. The portable computer 31 which is an example of the electronic device of the second embodiment is different from that of the first embodiment in the shape of the second housing portion 32D of the housing 21, but the other parts are common. Yes. For this reason, a different part from 1st Embodiment is mainly demonstrated, a common code | symbol is attached | subjected about a common location, and description is abbreviate | omitted.

  The portable computer 31 includes a main unit 12, a display unit 13, and a hinge mechanism 14 that connects the main unit 12 and the display unit 13. The display unit 13 rotates between a first position P1 that covers the main unit 12 as shown in FIG. 6 and a second position P2 that stands up with respect to the main unit 12 as shown in FIG. can do.

  As shown in FIG. 5, the main unit 12 includes a resin casing 32, a keyboard 26, a touch pad 27 that is a pointing device, and buttons 28. But the housing | casing 32 may be comprised with the magnesium alloy, for example.

  The main unit 12 further includes a printed circuit board 22 that is accommodated in the housing 32. The printed circuit board 22 includes a printed wiring board 23 formed by laminating copper wiring layers and a circuit component 24 mounted on the printed wiring board 23.

  As shown in FIG. 5, the housing 32 has an upper case 32A and a lower case 32B. Conductive films made of, for example, a copper nickel material are formed on the inner surfaces of the upper case 32A and the lower case 32B, respectively.

  As shown in FIGS. 5 and 7, the housing 32 includes a first housing portion 32C in which the printed circuit board 22 is housed, a second housing portion 32D that is hollow, and a first housing portion 32C. It has a partition wall 32E that partitions the second housing portion 32D, and a bumper wall 32G that surrounds the second housing portion 32D.

  As shown in FIG. 5, the first accommodating portion 32C is formed in a square shape, and the printed circuit board 22 is accommodated therein. The second accommodating portion 32D is arranged in four rounds corresponding to the entire circumference of the first accommodating portion 32C. As shown in FIGS. 5 and 7, the second storage portion 32 </ b> D is formed in a rectangular frame shape so as to surround the first storage portion 32 </ b> C. The second housing portion 32D serves as a buffer portion when an impact is applied to the housing 32. You may arrange | position the elastic shock absorbing material for absorbing an impact in 2nd accommodating part 32D.

  As shown in FIG. 6, the bumper wall 32G projects outward from the display unit 13 in the extending direction of the display unit 13 at the first position P1. The partition wall 32E is integrally formed with the peripheral wall 21F and the bumper wall 32G with resin. The partition wall 32E has a thickness dimension smaller than that of the bumper wall 32G.

  Next, an operation when an impact is applied to the portable computer 31 when the portable computer 31 is dropped will be described. If the portable computer 31 is accidentally dropped, it usually collides with the floor in the second storage portion 32D and the bumper wall 32G. At that time, when an impact within a range acceptable by the bumper wall is applied, the bumper wall 32G bends and absorbs the impact.

  On the other hand, when the allowable limit of the bumper wall 32G is exceeded, the bumper wall 32G is cracked or a part of the bumper wall 32G is damaged to absorb the impact. At this time, the debris 25 of the bumper wall 32G does not enter the first housing portion 32C by the partition wall 32E surrounding the first housing portion 32C. This prevents a situation in which the conductive film included in the fragments 25 adheres to the printed circuit board 22 and causes a short circuit in the printed circuit board 22. In addition, since the bumper wall 32G projects outward from the display unit 13 at the first position P1, it is possible to prevent an impact from being directly applied to the display 15.

  The above is the second embodiment of the portable computer 31. According to the second embodiment, the portable computer 31 includes a printed circuit board 22, a first accommodating part 32C in which the printed circuit board 22 is accommodated, a hollow second accommodating part 32D, and a first accommodating part 32D. And a housing 32 having a partition wall 32E that partitions the housing portion 32C and the second housing portion 32D.

According to this configuration, as in the first embodiment, the interior of the housing 32 is partitioned by the partition wall 32E into the first housing portion 32C and the second housing portion 32D. In this case, it is possible to prevent the fragments 25 of the casing 32 generated from the second storage portion 32D from entering the first storage portion 32C. In this case, the second storage portion 32D It arrange | positions in the four periphery of 32 C of 1 accommodating part. According to this configuration, the second housing portion 32D can be disposed on the entire circumference of the first housing portion 32C, and the printed circuit board 22 disposed in the first housing portion 32C can be protected from impact. it can. That is, as compared with the portable computer 11 of the first embodiment, the second storage portion 32D is not cut, so that the portable computer 31 can be configured to be more robust.

  In this case, the display unit 13 provided independently of the housing 32, the housing 32, and the display unit 13 are coupled, and the first position P1 that covers the housing 32 and the housing 32 are raised. And the hinge mechanism 14 that supports the display unit 13 so as to rotate between the second position P2 and the housing 32 includes a bumper wall 32G that surrounds the second housing portion 32D. The bumper wall 32G protrudes outward from the display unit 13 at the first position P1.

  According to this configuration, when the portable computer 31 is dropped, the display unit 13 is not in direct contact with the floor, and the display 15 can be prevented from being damaged as much as possible.

  In this case, the thickness dimension of the partition wall 32E is smaller than the thickness dimension of the bumper wall 32G. According to this structure, the housing | casing 32 can be reduced in weight by the part by which the partition 32E is comprised thinly. For this reason, the portable computer 31 as a whole can be reduced in weight.

  The electronic device of the present invention is not limited to the portable computers 11 and 31, but can be implemented for other electronic devices such as a portable information terminal. In addition, the electronic apparatus can be variously modified and implemented without departing from the gist of the invention.

The perspective view which shows the state which has a display unit in a 2nd position in the portable computer which concerns on 1st Embodiment. The perspective view which shows the state which has the display unit of the portable computer shown in FIG. 1 in a 1st position. FIG. 2 is a cross-sectional view of the portable computer shown in FIG. 1 taken along line F3-F3. Sectional drawing which shows the state which the bumper wall shown in FIG. 3 damaged and produced the fragment. The perspective view which shows the state which has a display unit in a 2nd position in the portable computer which concerns on 2nd Embodiment. FIG. 6 is a perspective view showing a state where the display unit of the portable computer shown in FIG. 5 is in a first position. FIG. 6 is a cross-sectional view of the portable computer shown in FIG. 5 taken along line F7-F7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11, 31 ... Portable computer, 12 ... Main body unit, 13 ... Display unit, 14 ... Hinge mechanism, 32 ... Housing | casing 21 housing | casing, 21C, 32C ... 1st accommodating part, 21D, 32D ... 2nd accommodating part, 21E, 32E ... partition wall, 21G, 32G ... bumper wall, 22 ... printed circuit board, P1 ... first position, P2 ... second position

Claims (7)

A printed circuit board,
A housing having a first housing portion in which the printed circuit board is housed, a hollow second housing portion, and a partition partitioning the first housing portion and the second housing portion; ,
An electronic device comprising:   The electronic device according to claim 1, wherein the second housing part is disposed at four corners of the first housing part. A display unit provided independently of the housing;
The display unit is connected to the display unit so as to rotate between a first position covering the case and a second position standing on the case. A hinge mechanism that supports
Comprising
The housing includes a bumper wall that surrounds the periphery of the second housing portion,
The electronic device according to claim 2, wherein the bumper wall projects outward from the display unit at the first position.   The electronic apparatus according to claim 3, wherein a thickness dimension of the partition wall is smaller than a thickness dimension of the bumper wall.   The electronic device according to claim 1, wherein the second housing part is disposed around the first housing part. A display unit provided independently of the housing;
The display unit is connected to the display unit so as to rotate between a first position covering the case and a second position standing on the case. A hinge mechanism that supports
Comprising
The housing includes a bumper wall that surrounds the periphery of the second housing portion,
The electronic device according to claim 5, wherein the bumper wall projects outward from the display unit at the first position.   The electronic apparatus according to claim 6, wherein a thickness dimension of the partition wall is smaller than a thickness dimension of the bumper wall.

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