WO2010073298A1

WO2010073298A1 - Panel structure and casing for electronic device

Info

Publication number: WO2010073298A1
Application number: PCT/JP2008/003933
Authority: WO
Inventors: 土肥俊夫; 五木田秀敏
Original assignee: パイオニア株式会社
Priority date: 2008-12-24
Filing date: 2008-12-24
Publication date: 2010-07-01
Also published as: JPWO2010073298A1

Abstract

This object aims to dispose a panel, which is made of a water-absorptive expanding material such as an acrylic resin, on a panel frame without a gap therebetween. The fitting end surface of the panel (14) is made to be a sloped surface (54) and brought into contact with the surface to be fitted of the peripheral wall part (31) of the panel frame (13) at only the front surface side portion in the thickness direction. When the panel (14) is linearly expanded due to moisture absorption, a force is so applied to the panel frame (13) that the fitting end surface of the panel (14) pushes and widen the peripheral wall part (31) of the panel frame. The force brings down the peripheral wall part (31) from a connection part (54), whereby the peripheral wall part (31) is so deformed as to fall down outward from the connection part (54) and follows up the linear expansion of the panel (14).

Description

Panel structure and electronic device casing

The present invention relates to a panel structure having a panel body formed of a hygroscopic expansion material such as an acrylic resin, and a housing of an electronic device.

Acrylic resin is used as an outer casing of electronic equipment having a transparent portion because it has high transparency and is easy to process. As described above, in a conventional electronic device in which a transparent acrylic panel is disposed, an acrylic resin panel body is attached on a panel frame such as ABS (Acrylonitrile Butadiene Styrene polymer) resin and is fixed to the case body.

However, since the panel body is made of acrylic resin, linear expansion occurs due to moisture absorption. On the other hand, since the panel frame is made of ABS resin or the like, linear expansion due to large moisture absorption like acrylic resin does not occur. For this reason, if the tolerance between the panel body and the panel frame is set to be small, the panel body may be linearly expanded during manufacture, and the panel body may not be fitted onto the panel frame. Therefore, conventionally, in consideration of the linear expansion of the acrylic resin, the shape of the panel body is processed in advance to be smaller than the shape of the panel frame.

Japanese Patent Application Laid-Open No. H10-228561 proposes a method in which a gap is formed between the acrylic plate and the joint frame in consideration of expansion due to temperature change of the acrylic plate.
Japanese Patent Laid-Open No. 2001-72357

As described above, conventionally, the shape of the panel body is processed in advance smaller than the shape of the panel frame in consideration of the linear expansion of the acrylic resin. Therefore, as shown in FIG. 10, when the panel body 201 is fixed on the panel frame 202, a gap 204 is generated between the peripheral wall portion 203 of the panel frame 202 and the panel body 201. Moreover, even what is shown by patent document 1 has the clearance gap in the part of an acrylic board and a joint frame.
As described above, when the gap is generated, not only the design property is deteriorated, but also problems such as dust entering the inside of the housing from the gap and dust being attached to the gap occur.

An object of the present invention is to provide a panel structure body and an electronic device casing in which a panel body formed of a hygroscopic expansion material can be disposed without a gap.

The panel structure of the present invention is a panel frame composed of a panel base and a peripheral wall portion protruding in a frame shape from the panel base, and is bonded to the panel base in a state of being fitted to the peripheral wall portion, and the moisture absorption is different from that of the panel frame. And a fitting end face of the panel body is in contact with the fitted surface of the peripheral wall only at the surface side portion in the thickness direction.

According to this configuration, the linear expansion of the panel body due to moisture absorption is deformed and absorbed so that the peripheral wall portion falls outside. For this reason, the size of the shape of the panel body and the size in the peripheral wall portion of the panel frame can be equally processed, and the panel frame and the panel body can be fitted with no gap.

In this case, it is preferable that the panel frame is formed in a square shape in plan view, and the panel body is fitted to peripheral wall portions located on at least two opposing sides of the four sides of the panel frame.

According to this configuration, the linear expansion of the panel body can be deformed so that the peripheral wall portion falls down on at least two opposite sides of the four sides of the panel frame, and this can be absorbed.

In the present invention, it is preferable to further include a continuous portion that is interposed between the panel base and the peripheral wall portion and allows the outer deformation of the peripheral wall portion according to the hygroscopic expansion of the panel body.

According to this configuration, the linear expansion of the panel body is deformed and absorbed so that the peripheral wall portion falls outwardly around the continuous portion. For this reason, an excessive force is not added to a surrounding wall part, but damage to a surrounding wall part etc. can be prevented effectively.

In the present invention, the panel base, the peripheral wall portion, and the continuous portion are integrally formed of a resin material, and the continuous portion is formed thin so as to be deformed against the hygroscopic expansion of the panel body. Is preferred.

According to this configuration, the connecting portion can be easily formed without affecting the appearance.

In the present invention, it is preferable that the fitting end surface is formed of a vertical surface or an inclined surface in which the surface side in the thickness direction protrudes.

According to this configuration, the fitting end face can be brought into contact with the fitted surface of the peripheral wall only at the surface side portion in the thickness direction, and the fitting to the peripheral wall of the panel body can be easily performed.

In the present invention, the surface side in the thickness direction of the mating end surface is separated from the mating surface of the peripheral wall portion by a dimension that is ½ of the maximum hygroscopic linear expansion of the panel body in the usage environment. Is preferred.

According to this configuration, the panel frame and the panel body can be fitted with no gap in a steady state, and an excessive tensile force does not act on the connecting portion even if the panel body linearly expands to the maximum.

In the present invention, the panel body is preferably formed of an acrylic resin.

According to this configuration, a transparent panel with high transparency can be formed by forming the panel body with an acrylic resin.

In the present invention, the panel frame is formed in a square shape in plan view, and each corner portion of the panel frame is provided with a notch portion along the corner portion at a portion where the panel base and the peripheral wall portion are continuously provided. It is preferable.

According to this configuration, the linear expansion of the panel body can be absorbed by moving the peripheral wall portion of the panel body outward by the notch portion of the corner portion.

In the present invention, it is preferable that the surface of the panel body and the front end surface of the peripheral wall portion are arranged flush with each other.

According to this configuration, the panel body and the peripheral wall can be integrated, and a clean appearance design can be achieved.

The housing of the electronic device according to the present invention is provided with a lid case formed by the above-described panel structure in which an annular convex portion is formed on the base end surface of the peripheral wall portion, and provided at the same position as the peripheral wall portion. A main body case having a case peripheral wall in which an annular recess is formed, and a backup seal that is laid on the groove bottom of the annular recess and seals between the annular protrusion and the annular recess. It is characterized by being attached to the main body case with a gap between the base end surface of the portion and the distal end surface of the case peripheral wall.

According to this configuration, since the gap is provided between the base end surface of the peripheral wall portion and the distal end surface of the case peripheral wall portion, no rattling occurs even if the peripheral wall portion of the panel frame moves up and down due to linear expansion.

It is a disassembled perspective view which shows the housing structure of the electronic device of embodiment of this invention. It is explanatory drawing of the attachment structure of the panel body and panel frame in the electronic device of embodiment of this invention. It is explanatory drawing of the corner part of the panel frame in the electronic device of embodiment of this invention. It is explanatory drawing of the attachment structure of the panel body and panel frame in the electronic device of embodiment of this invention. It is explanatory drawing of the countermeasure to the linear expansion generation | occurrence | production of the panel body in the electronic device of embodiment of this invention. It is explanatory drawing of the response | compatibility to linear expansion generation | occurrence | production of the corner part of the panel body in the electronic device of embodiment of this invention. It is explanatory drawing in the case of being the same panel structure in the electronic device of embodiment of this invention. It is explanatory drawing of the attachment structure of the panel frame and main body frame in the electronic device of embodiment of this invention. It is explanatory drawing of the attachment structure of the panel frame and main body frame in the electronic device of embodiment of this invention. It is explanatory drawing of the attachment structure of the panel body and panel frame in the conventional electronic device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic device 11 Main body case 12 Board | substrate 13 Panel frame 14 Panel body 21 Boss 22 Liquid crystal display module 23 Annular recessed part 25 Notch 30 Panel base 31 Perimeter wall part 33 Opening 35

Annular convex part

51, 53 Inclined surface 54 Connecting part 61 Backup seal

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a housing configuration of an electronic device to which the panel structure of the present invention can be applied. As shown in FIG. 1, in an electronic device (AV controller) 1 to which the present invention can be applied, a substrate 12 is arranged in a main body case 11, a panel body 14 is attached on a panel frame 13, and the panel frame 13 is attached to the main body case 11. It is fixed and configured.

The main body case 11 forms a lower housing of the electronic device, and a plurality of bosses 21 are planted on the inner surface of the peripheral wall of the main body case 11 so as to be separated from each other. The substrate 12 is placed between the main body case 11 and the panel frame 13 in the main body case 11 and placed on the boss 21 of the main body case 11. The substrate 12 is for mounting electronic components, and a liquid crystal display module 22 is widely mounted on the upper surface thereof.

The panel frame 13 is arranged below the panel body 14 in parallel with the panel body 14 and constitutes the base of the panel body 14. The panel frame 13 is formed of a member having elasticity, for example, ABS resin. And the panel frame 13 has the panel base 30 and the surrounding wall part 31 which protrudes in frame shape from the outer periphery of the panel base 30. As shown in FIG. The panel base 30 has a wide rectangular opening 33 corresponding to the position of the liquid crystal display module 22.

The panel body 14 is made of a transparent acrylic resin, and the panel body 14 and the panel frame 13 have a similar shape. The acrylic resin is a hygroscopic expansion material, and the panel body 14 undergoes linear expansion in the long side direction and the short side direction due to moisture absorption.

FIG. 2 shows a mounting structure between the panel body 14 and the panel frame 13 in the first embodiment of the present invention. As shown in FIG. 2, the panel body 14 made of acrylic resin has a rectangular plate shape. The four side edges (four sides), that is, each end surface, are inclined surfaces 51 that are inclined downward.

On the other hand, the panel frame 13 has a square shape in plan view, and is integrally formed by a panel base 30 and a peripheral wall portion 31 protruding in a frame shape from the four outer peripheral edges of the panel base 30. Further, the four peripheral wall portions 31 of the panel frame 13 have inclined surfaces 53 that are inclined upward. Although not shown in the figure, the panel base 30 and the panel body 14 are adhered by a double-sided adhesive tape. When the panel body 14 is attached to the panel frame 13, only the upper end of the panel body 14 is a peripheral wall. It contacts (fits) the part 31.

Further, the continuous portion 54 between the panel base 30 and the peripheral wall portion 31 is formed thin with respect to the peripheral wall portion 31, and is configured to be deformable. Further, as shown in FIG. 3, “L” -shaped cutouts 25 in a plan view are respectively formed at four corner portions of a continuous portion between the panel base 30 and the peripheral wall portion 31.

As shown in FIG. 4, the panel body 14 is fitted in the peripheral wall portion 31 of the panel frame 13, and the panel body 14 is adhered to the panel base 30 to form a lid case. As described above, the side edge of the panel body 14 has the inclined surface 51 such that the inclined surface faces downward, and the peripheral wall portion 31 of the panel frame 13 has the inclined surface 53 such that the inclined surface faces upward. Yes. The inclination angle of the inclined surface 51 at the side edge of the panel body 14 is larger than the inclination angle of the inclined surface 53 of the peripheral wall portion 31 of the panel frame 13. The inclined surface 51 is a fitting end surface of the panel body 14, the inclined surface 53 is a fitted surface of the panel frame 13, and the panel body 14 is fitted to the panel frame 13. As shown in FIG. 4, when the panel body 14 is fitted into the peripheral wall portion 31 of the panel frame 13, the fitting end surface of the panel body 14 is covered with the peripheral wall portion 31 of the panel frame 13 only at the surface side portion in the thickness direction. Contact the mating surface.

As described above, since the panel body 14 is formed of a transparent acrylic resin, linear expansion occurs due to moisture absorption. On the other hand, since the panel frame 13 is formed of ABS resin, large linear expansion does not occur due to moisture absorption. Here, when the panel body 14 linearly expands due to moisture absorption, a force A1 is applied so that the fitting end surface of the panel body 14 pushes the peripheral wall portion 31 of the panel frame 13 as shown in FIG. On the other hand, since the connecting portion 54 is thin, the force A1 is a force B1 that causes the peripheral wall portion 31 to be tilted outward with the connecting portion 54 as a center. Thereby, the surrounding wall part 31 deform | transforms so that it may fall outside centering on the connection part 54, and follows the linear expansion of the panel body 14. FIG.

Further, in the above-described embodiment, as shown in FIG. 3, the notch 25 is formed in each corner portion of the portion where the panel base 30 and the peripheral wall portion 31 are continuously provided. As for the corner portion, as shown in FIG. 6, when the panel body 14 is linearly expanded due to moisture absorption and a force A1 is applied so that the fitting end surface of the panel body 14 pushes the peripheral wall portion 31 of the panel frame 13, the panel body 14 It becomes force C1 that 14 peripheral wall parts 31 move below, and absorbs linear expansion.

As described above, in the first embodiment of the present invention, when the panel body 14 is fitted into the peripheral wall portion 31 of the panel frame 13, the fitting end surface of the panel body 14 is the panel frame only at the surface side portion in the thickness direction. Further, the connecting portion 54 between the panel base 30 and the peripheral wall portion 31 is formed thin and can be deformed. For this reason, the size of the shape of the panel body 14 and the size in the peripheral wall part 31 of the panel frame 13 can be processed equally, and the panel frame 13 and the panel body 14 can be fitted with no gap.

Moreover, as shown in FIG. 7, the surface of the panel body 14 and the front-end | tip surface of the surrounding wall part 31 of the panel frame 13 can also be arrange | positioned flush. If comprised in this way, a clearance gap will not arise in the boundary part of the panel body 14 and the surrounding wall part 31, and an operation panel with a high-class feeling (precision feeling) can be comprised in a design.

In addition, when the size of the shape of the panel body 14 and the size in the peripheral wall part 31 of the panel frame 13 are processed equally, if the panel body 14 is linearly expanded due to moisture absorption, It becomes difficult to fit the panel body 14. In the first embodiment of the present invention, the panel body 14 is provided with an inclined surface 51 such that the inclined surface faces downward, and the peripheral wall portion 31 of the panel frame 13 is provided with an inclined surface 53 such that the inclined surface faces upward. As described above, when the inclined surface 51 is provided on the panel body 14 and the inclined surface 53 is provided on the peripheral wall portion 31 of the panel frame 13, even if the panel body 14 is linearly expanded due to moisture absorption, the peripheral wall portion of the panel frame 13. It becomes easy to fit the panel body 14 into 31.

By the way, the water absorption rate of the acrylic member is normally about 0.3%, the change in the outer shape of the acrylic panel body 14 is about 0.1% to 0.3%, and the peripheral wall portion 31 of the panel frame 13 is It will fall to the outside by a maximum of about 0.1 mm. In this embodiment, for example, the thickness of the continuous portion 54 is set to 0.7 mm, the taper amount of the side edge of the panel body 14 is set to 0.3 mm, and the taper amount of the peripheral wall portion 31 of the panel frame 13 is set to 0.2 mm. Yes.

The inclination angle of the inclined surface 51 of the panel body 14 and the inclination angle of the inclined surface 53 of the peripheral wall portion 31 of the panel frame 13 are appropriately determined depending on the linear expansion of the member and the use environment. For example, the surface side in the thickness direction of the fitting end surface of the panel body 14 is separated from the mating surface of the peripheral wall portion 31 by a size separation of ½ of the maximum water absorption linear expansion of the panel body 14 in the usage environment. Then, the panel frame 13 and the panel body 14 can be fitted with no gap in a steady state.

In the above-described embodiment, the inclined surfaces 51 are provided on the four side edges of the panel body 14 that is rectangular in plan view, and the inclined surfaces 53 are provided on the four peripheral wall portions 31 of the panel frame 13. Inclined surfaces 51 are provided on two side edges of the rectangular panel body 14 facing in the vertical or horizontal direction, and inclined surfaces 53 are provided in two peripheral wall portions 31 of the panel frame 13 facing in the vertical or horizontal direction. You may do it. Moreover, in the above-mentioned embodiment, although the connection part 54 between the panel base 30 and the surrounding wall part 31 is made thin, when the whole panel frame 13 deform | transforms easily, the panel base 30, the surrounding wall part 31, It is not necessary to make the connecting portion 54 between the two thin.

Next, a fixing structure between the lid case configured by attaching the panel body 14 on the panel frame 13 and the main body case 11 will be described. FIG. 8 shows a fixing structure between the lid case and the main body case 11 configured by attaching the panel body 14 on the panel frame 13. As shown in FIG. 8, an annular convex portion 35 is provided on the base end surface of the peripheral wall portion 31 of the panel frame 13. An annular recess 23 is provided in the case peripheral wall of the main body case 11.

When fixing the lid case configured by attaching the panel body 14 on the panel frame 13 and the fixing structure of the main body case 11, as shown in FIG. The backup seal 61 is interposed and is fitted. At this time, it is in the state which has the gap | interval 62 between the base end surface of the surrounding wall part 31, and the front end surface of a case surrounding wall part. Thereby, a deformation | transformation of the surrounding wall part 31 is accept | permitted appropriately.

In the first embodiment of the present invention, as described above, the fitting end surface of the panel body 14 is brought into contact with the fitting surface of the peripheral wall portion 31 of the panel frame 13 only at the surface side portion in the thickness direction. The linear expansion of the panel body 14 is absorbed as a downward deformation of the peripheral wall portion 31. For this reason, the peripheral wall part 31 of the panel frame 13 may move up and down by the linear expansion of the panel body 14, and rattling may occur. As described above, if the gap 62 is provided between the base end surface of the peripheral wall portion 31 and the distal end surface of the case peripheral wall portion, even if the peripheral wall portion 31 of the panel frame 13 moves up and down due to linear expansion, the sealing performance is improved. There is no damage and no rattling occurs.

The present invention is not limited to the above-described embodiments, and various modifications and applications can be made without departing from the gist of the present invention. Although the case of the electronic device has been described in the present embodiment, the present invention is not limited to the electric / electronic device, and can be applied to a building fixture that supports a panel body such as a door or a window. In other words, the resin panel body is supported by a metal panel frame (frame body), and can be applied to the exterior or outer casing of a planar structure or a three-dimensional structure. That is, the present invention can be applied to an interior or a design role, a thing that wants to be displayed with high quality, or a thing that requires a gap accuracy in terms of appearance or function.

Claims

A panel frame comprising a panel base and a peripheral wall portion protruding in a frame shape from the panel base;
A panel body that is bonded to the panel base in a state of being fitted to the peripheral wall portion, and is formed of a hygroscopic expansion material different in material from the panel frame,
The panel structure body, wherein the fitting end surface of the panel body is in contact with the mating surface of the peripheral wall portion only at the surface side portion in the thickness direction.
The panel frame is formed in a plan view square shape,
The panel structure according to claim 1, wherein the panel body is fitted to the peripheral wall portion located on at least two opposing sides of the four sides of the panel frame.
The apparatus further comprises a continuous portion interposed between the panel base and the peripheral wall portion and allowing deformation of the peripheral wall portion to the outside in accordance with hygroscopic expansion of the panel body. 2. The panel structure according to 1.
The panel base, the peripheral wall portion, and the continuous portion are integrally formed of a resin material,
The panel structure according to claim 3, wherein the continuous portion is formed thin so as to be deformed according to hygroscopic expansion of the panel body.
The panel structure according to claim 1, wherein the fitting end surface is formed of a vertical surface or an inclined surface in which a surface side in the thickness direction projects.
The surface side in the thickness direction of the fitting end face is separated from the mating face of the peripheral wall portion by a dimension that is ½ of the maximum hygroscopic linear expansion of the panel body in a use environment. The panel structure according to claim 5, wherein
The panel structure according to claim 1, wherein the panel body is made of an acrylic resin.
The panel frame is formed in a plan view square shape,
The notch part along the said corner part is provided in each corner part of the said panel frame in the part which connects the said panel base and the said surrounding wall part, The Claim 1 characterized by the above-mentioned. Panel structure.
The panel structure according to claim 1, wherein a surface of the panel body and a front end surface of the peripheral wall portion are disposed flush with each other.
A lid case constituted by the panel structure according to any one of claims 1 to 9, wherein an annular convex portion is formed on a base end surface of the peripheral wall portion;
A main body case having a case peripheral wall provided at the same position as the peripheral wall portion, and having an annular concave portion into which the annular convex portion is fitted on the tip surface;
A backup seal that is laid on the groove bottom in the annular recess and seals between the annular projection and the annular recess;
The case of an electronic device, wherein the lid case is attached to the main body case with a gap between a base end surface of the peripheral wall portion and a distal end surface of the case peripheral wall.