JP4743537B2 - Portable electronic devices - Google Patents

Description

  The present invention relates to a portable electronic device, and more particularly to a protection structure against an impact applied to a casing from the outside.

  The portable electronic device is positioned as a counter electrode of a stationary electronic device that is fixedly used at a predetermined location and is designed on the assumption that the user always carries it as necessary.

  One type of portable electronic device is an OTDR (Optical Time Domain Reflectometer: optical pulse tester) configured such that an operator carries an optical fiber laying work site or the like to perform measurement confirmation of an optical communication line. OTDR measures the loss and connection position of an optical communication line based on a reflected pulse and backscattered light obtained by making an optical pulse incident on an optical communication line composed of an optical fiber, an optical connector, etc. The measurement results are displayed on the display screen.

  The portable OTDR used at the work site may be measured on a pole that is hung on a shoulder, climbed on a utility pole, and may need to be measured in a narrow space surrounded by obstacles. It is necessary to be able to work easily, safely and reliably, and to protect the measuring instrument built in the casing from vibrations and shocks applied to the casing from the outside in order to operate stably.

  Therefore, in a conventional portable OTDR, a protector molded into a predetermined shape with a resilient rubber member is attached so as to fit on both side surfaces of the housing and cover corners with adjacent surfaces. Yes.

  FIG. 4 is a perspective view of an essential part showing an example of a conventional protector 10. In FIG. 4, the protector 10 includes a rubber member 20 and a sheet metal member 30 that is fastened and fastened to the concave portion 21 of the rubber member 20.

  The rubber member 20 is formed with a recess 21 so as to fit on a side surface of a casing of a rectangular parallelepiped portable electronic device (not shown) and to cover a corner with an adjacent surface. A reinforcing sheet metal member 30 is fastened and fixed to the bottom surface of the recess 21 with screws 40. Here, a metal female screw (not shown) is embedded in the bottom surface of the recess 21 of the rubber member 20, and the sheet metal member 20 is fastened and fixed by the male screw 40. A plurality of mounting holes (not shown) for screwing to the side surface of the housing are also provided on the bottom surface of the recess 21.

  The sheet metal member 30 is formed by bending the upper, lower, left and right sides of the main plane 31 at right angles in the same direction so as to fit into the recesses 21 of the rubber member 20. A plurality of mounting holes 32 for screwing to the side surface of the housing are provided on the main plane 31 of the sheet metal member 30 so as to overlap with the plurality of mounting holes provided on the bottom surface of the recess 21 of the rubber member 20. ing.

JP2000-236169A

However, since the conventional protector 10 shown in FIG. 4 has a metal female screw for fastening and fixing the sheet metal member 30 on the bottom surface of the recess 21 of the rubber member 20, a mold for molding the rubber member 20 is used. There is a problem that the structure is complicated and contributes to an increase in cost.
Further, since there is an operation of fastening the rubber member 20 and the sheet metal member 30 with the screw 40, it is an impediment to improving the assembly work efficiency.

  The present invention pays attention to such conventional problems, and an object of the present invention is to reduce the cost of a mold for molding a rubber member and to provide a portable electronic device having a protector with improved assembly work efficiency. Is to provide.

The invention of claim 1 which achieves such a problem,
A portable electronic device in which a protector composed of a rubber member and a sheet metal member fastened and fixed to a recess formed in the rubber member is fitted and attached to the stepped portions formed on both side surfaces of the housing. In the equipment
The concave portion of the rubber member is formed in a rectangular shape so as to fit on the side surface of the casing and cover the corner portion with the adjacent surface, and a plurality of edges are arranged at substantially equal intervals along the longitudinal direction in the central portion of the bottom surface of the concave portion. Attached holes are provided, and the edge portions of the edged holes are formed as locking members for fastening and fixing the sheet metal member, and a plurality of mounting holes for screwing to the side surface of the housing on the bottom surface of the concave portion A plurality of claw portions are discretely provided on each side forming the opening surface of the concave portion of the rubber member as a locking member for fastening and fixing the sheet metal member, and projections are provided on these claw portions. And
The sheet metal member is formed by bending the upper, lower, left, and right sides of the main plane at right angles in the same direction so as to fit into the recesses of the rubber member, and the edge portion of the rubber member is inserted into the central portion of the main plane. A plurality of punching holes for fastening and fixing to the rubber member are provided at substantially equal intervals along the longitudinal direction of the sheet metal member, and screwed to the side surface of the housing on the main plane of the sheet metal member A plurality of mounting holes for overlapping with the plurality of mounting holes provided in the bottom surface of the recess of the rubber member,
When the rubber member and the sheet metal member are integrally assembled as a protector in which the sheet metal member is included in the rubber member, a plurality of portions provided at substantially equal intervals along the longitudinal direction at the central portion of the bottom surface of the concave portion of the rubber member. Each of the edge portions of the edged holes is fitted to the corresponding ones of the plurality of punching holes provided in the central portion of the main plane of the sheet metal member, and forms the opening surface of the concave portion of the rubber member. A plurality of claw portions provided discretely on the four sides of the sheet metal member are fitted to the bent end surfaces of the upper, lower, left and right sides of the main plane of the sheet metal member,
Stepped portions are formed on both side surfaces of the housing so that the bent sides of the sheet metal member of the protector are fitted, and attachment portions for fastening and securing the protector with screws are provided in the vicinity of upper and lower ends of these side surfaces. A plurality of recesses are provided on the outer periphery of the bottoms of these side surfaces provided so as to overlap the mounting holes of the protector so that the protrusions of the claw portions of the rubber member constituting the protector are fitted. It is characterized by being.

The invention of claim 2 is the portable electronic device according to claim 1,
The sheet metal member of the protector is integrally formed with a belt hook by punching and bending .

  ADVANTAGE OF THE INVENTION According to this invention, the cost reduction of the metal mold | die which shape | molds a rubber member can be aimed at, and the portable electronic device provided with the protector which improved the assembly work efficiency is realizable. And internal heat generation can be efficiently diffused outside.

  Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an essential part showing an embodiment of a protector used in the present invention, and FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. In FIG. 1 and FIG. 2, the protector 100 is composed of a rubber member 110 and a sheet metal member 120 that is fastened and fastened to the concave portion of the rubber member 110, as in FIG. The specific fastening structure with the member 120 is different.

  A rectangular recess 111 is formed in the rubber member 110 so as to fit on a side surface of a casing of a rectangular parallelepiped portable electronic device (not shown) and cover a corner portion with an adjacent surface. In the central portion of the bottom surface of the recess 111 of the rubber member 110, a plurality of edged holes 112 are provided at substantially equal intervals along the longitudinal direction. The edge portions 113 of the edged holes 112 function as locking members that fasten and fix the sheet metal member 120.

  In addition, a plurality of claw portions 114 are discretely provided on the four sides on the top, bottom, left, and right that form the opening surface of the recess 111 of the rubber member 110. The plurality of claw portions 114 also function as locking members that fasten and fix the sheet metal member 120. Each claw portion 114 is provided with a protrusion 115. A plurality of mounting holes (not shown) for screwing to the side surface of the housing are also provided on the bottom surface of the recess 111.

  The sheet metal member 120 is formed by bending four sides of the main plane 121 in the same direction at right angles so as to fit into the recesses 111 of the rubber member 110. A plurality of punched holes 122 for inserting and attaching the edged holes 112 of the rubber member 110 to the central portion of the rectangular main plane 121 of the sheet metal member 120 are arranged along the longitudinal direction of the sheet metal member 120. Are provided at approximately equal intervals. Further, a plurality of mounting holes 123 for screwing to the side surface of the housing are provided on the main plane 121 of the sheet metal member 120 so as to overlap with a plurality of mounting holes provided on the bottom surface of the recess 111 of the rubber member 110. ing.

  When integrally assembling as the protector 100, each of the edge portions 113 of the plurality of edged holes 112 provided in the central portion of the bottom surface of the concave portion 111 of the rubber member 110 at substantially equal intervals along the longitudinal direction is formed on the sheet metal member. 120 are fitted into corresponding ones of the plurality of punching holes 122 provided in the central part of the main plane 121 of 120, and are provided discretely on the four sides of the top, bottom, left and right forming the opening surface of the recess 111 of the rubber member 110 The plurality of claw portions 114 are fitted to the bent end surfaces of the four sides on the upper, lower, left and right sides of the main plane 121 of the sheet metal member 120.

  Thereby, the rubber member 110 and the sheet metal member 120 are overlapped without using a special assembly jig or tool, and can be easily fastened and integrated as the protector 100 in which the sheet metal member 120 is included in the rubber member 110. Further, when the protector 100 that is fastened and integrated is separated into the rubber member 110 and the sheet metal member 120, the fitting between the claw portion 114 of the rubber member 110 and the bent end surface of the sheet metal member 120 is released to release the edge of the rubber member 110. The fitting between the edge 113 of the attachment hole 112 and the punching hole 122 of the sheet metal member 120 may be released, and separation can be easily performed without using a special assembly jig or tool.

  Focusing on the rubber member 110, since a conventional metal female screw is not embedded, a mold for molding the rubber member 110 is not complicated as in the conventional case, and the cost can be reduced.

  FIG. 3 is an assembled perspective view showing an embodiment of a portable electronic device according to the present invention. The side surface 201 of the metal frame 200 on which the inner unit is mounted is formed as a stepped portion so that the bent side of the sheet metal member 120 of the protector 100 fits. In the vicinity of the upper and lower end portions of the side surface 201, mounting portions 202 and 203 for fastening and securing the protector 100 with screws 300 are provided so as to overlap the mounting holes 123. A plurality of recesses 204 are provided on the outer periphery of the bottom of the side surface 201 formed so as to protrude so that the protrusions 115 of the claw portions 114 of the rubber member 110 constituting the protector 100 are fitted.

  In the protector 100, belt hooks 124 and 125 are provided in the vicinity of the upper and lower ends. These belt hooks 124 and 125 can be integrally processed by punching and bending the sheet metal member 120, and the number of parts does not increase. The belt hook 124 is provided with two bars, and the belt hook 125 is provided with one bar. A shoulder belt for a shoulder is attached to the bar on the belt hook 124 between the bar on the other side, and between the bar under the belt hook 124 and the bar of the belt hook 125. A hand belt for holding with one hand is attached.

  According to the configuration of FIG. 3, the protrusions 115 of the claw portions 114 of the rubber member 110 of the protector 100 are fitted into the recesses 204 provided on the outer periphery of the bottom surface 201 of the metal frame. Therefore, the work can be efficiently performed without being disengaged when fastened and fixed to the side surface 201.

  Then, the bent side of the sheet metal member 120 of the protector 100 is fitted to the stepped portion of the side surface 201 of the metal frame, and further, the sheet metal member 120 of the protector 100 and the side surface 201 of the metal frame are fastened and fixed by the screws 300. The heat generated inside can be efficiently transmitted to the sheet metal member 120 and dissipated to the outside, and an excellent heat dissipation effect can be obtained.

  Furthermore, since the sheet metal member 120 constituting the protector 100 is structured to be included in the rubber member 110 so as not to protrude to the outside, there is no possibility that the operator will contact the sheet metal member 120 during work, and the Even if the inside of the metal frame of the portable electronic device becomes hot due to the use, the work can be performed safely.

  As described above, according to the present invention, the cost of a mold for molding a rubber member can be reduced, and a portable electronic device including a protector with improved assembly work efficiency can be realized. And the heat_generation | fever in the inside of a portable electronic device can be efficiently diffused outside.

It is a principal part perspective view which shows one Example of the protector used by this invention. It is AA 'sectional drawing of FIG. It is an assembly perspective view showing one example of a portable electronic device based on the present invention. It is a principal part perspective view which shows an example of the conventional protector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Protector 110 Rubber | gum member 111 Recessed part 112 Edged hole 113 Edge part 114 Claw part 115 Protrusion part 120 Sheet metal member 121 Main plane 122 Punching hole 123 Mounting hole 124, 125 Belt hook part 200 Metal frame 201 Side face 202, 203 Attachment part 204 Recess

Claims (2)

A portable electronic device in which a protector composed of a rubber member and a sheet metal member fastened and fixed to a recess formed in the rubber member is fitted and attached to the stepped portions formed on both side surfaces of the housing. In the equipment
The concave portion of the rubber member is formed in a rectangular shape so as to fit on the side surface of the casing and cover the corner portion with the adjacent surface, and a plurality of edges are arranged at substantially equal intervals along the longitudinal direction in the central portion of the bottom surface of the concave portion. Attached holes are provided, and the edge portions of the edged holes are formed as locking members for fastening and fixing the sheet metal member, and a plurality of mounting holes for screwing to the side surface of the housing on the bottom surface of the concave portion A plurality of claw portions are discretely provided on each side forming the opening surface of the concave portion of the rubber member as a locking member for fastening and fixing the sheet metal member, and projections are provided on these claw portions. And
The sheet metal member is formed by bending the upper, lower, left, and right sides of the main plane at right angles in the same direction so as to fit into the recesses of the rubber member, and the edge portion of the rubber member is inserted into the central portion of the main plane. A plurality of punching holes for fastening and fixing to the rubber member are provided at substantially equal intervals along the longitudinal direction of the sheet metal member, and screwed to the side surface of the housing on the main plane of the sheet metal member A plurality of mounting holes for overlapping with the plurality of mounting holes provided in the bottom surface of the recess of the rubber member,
When the rubber member and the sheet metal member are integrally assembled as a protector in which the sheet metal member is included in the rubber member, a plurality of portions provided at substantially equal intervals along the longitudinal direction at the central portion of the bottom surface of the concave portion of the rubber member. Each of the edge portions of the edged holes is fitted to the corresponding ones of the plurality of punching holes provided in the central portion of the main plane of the sheet metal member, and forms the opening surface of the concave portion of the rubber member. A plurality of claw portions provided discretely on the four sides of the sheet metal member are fitted to the bent end surfaces of the upper, lower, left and right sides of the main plane of the sheet metal member,
Stepped portions are formed on both side surfaces of the housing so that the bent sides of the sheet metal member of the protector are fitted, and attachment portions for fastening and securing the protector with screws are provided in the vicinity of upper and lower ends of these side surfaces. A plurality of recesses are provided on the outer periphery of the bottoms of these side surfaces provided so as to overlap the mounting holes of the protector so that the protrusions of the claw portions of the rubber member constituting the protector are fitted. portable electronic device, characterized in that it is. 2. The portable electronic device according to claim 1, wherein a belt-hanging portion is integrally formed by punching and bending the sheet metal member of the protector .

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