JP2010010541A - Waterproof structure of electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the waterproof performance of a waterproof structure of electronic equipment without requiring any dedicated component for waterproofing. <P>SOLUTION: An upper surface plate 14 of a front case 2 is provided with two streak projections 17 and an engagement groove 18. A recessed portion with which the streak projections 17 engage and an engagement projection which engages with the engagement groove 18 are provided inside an upper surface plate 24 of a rear case 3. The engagement groove 18 of the front case 2 is engaged with the engagement projection of the rear case 3, and the front case 2 is rotated on the engagement projection as the center of rotation to couple both the cases 2 and 3 with each other. A partition member 4 covering an opening 13 of the front case 2 is provided with a roof 45 which guides rainwater entering the electronic equipment 1 to a drainage ditch 47, and the rainwater guided to the drainage ditch 47 is discharged from an exhaust port 30 of the rear case 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a waterproof structure for an electronic device installed outdoors.

As a waterproof structure of a conventional electronic device, there is one shown in Patent Document 1. This will be described with reference to FIGS. In the electronic apparatus generally indicated by reference numeral 101 in FIG. 8, a base plate 102, an upper case 103 fixed to the base plate 102 so as to cover the base plate 102, and an opening 104 of the upper case 103 can be freely opened and closed. And a cover 105. The opening 104 of the upper case 103 engages the engagement protrusion 107 provided on the cover 105 with the engagement recess 106 provided on the upper case 103, and rotates the cover 105 around the engagement protrusion 107. It is blocked by moving it. A groove 108 is provided below the gap 110 formed between the opening 104 of the upper case 103 and the end of the cover 105, as shown in FIG. A material 109 is fitted.
JP 2004-214529 A

  The above-described conventional waterproof structure for electronic devices has a problem that rainwater and the like easily enter the electronic device from the gap 110 because no special waterproof structure is provided in the gap 110. Further, as a countermeasure, there is a problem that the sealing material 109 is required and not only the number of parts is increased but also the assembling work is complicated.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a waterproof structure for an electronic device with improved waterproofness without requiring a dedicated component for waterproofing. By the way.

  In order to achieve this object, the present invention provides a front case having an opening on the back side by a front plate and a surrounding wall formed in a frame shape projecting from the periphery of the front plate, a back plate, and a peripheral edge of the back plate In a waterproof structure for an electronic device comprising a rear case that is protruded from the frame and formed into a frame shape and has a front case that is open on the front side, a plurality of portions that extend between both side surfaces on the upper surface of the enclosure wall of the front case In the state where the protrusions are juxtaposed, a fitting recess for fitting the protrusions is provided on the upper surface of the enclosure wall of the rear case, and the openings of the two cases are covered with each other. Both cases are combined so as to surround the enclosure wall of the front case by an enclosure wall.

  The present invention is the above invention, further comprising a partition member that covers the opening of the front case, and a roof that is inclined downward from the center toward both sides is provided at an upper portion of the partition member, and the roof is formed on both sides of the partition member. A drainage channel extending in the vertical direction is provided, and a drainage port communicating with the drainage channel is provided on the bottom plate of the enclosure wall of the rear case.

  According to the present invention, the plurality of ridges and the fitting recesses into which these ridges are fitted increase the waterproof distance against rainwater and the like entering from the gap between the surrounding walls, so that the water tightness is high. The waterproofness is improved. In addition, not only a dedicated part for waterproofing is required, but also the waterproofness can be improved by assembling both cases, so that the number of parts and the number of assembling steps can be reduced.

  According to one of the inventions, even if rainwater or the like enters the apparatus, the rainwater can be guided to the drainage channel via the roof and drained from the drainage outlet to the outside of the apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 is generally constituted by a front case 2, a rear case 3 that forms a casing together with the front case 2, and a partition member 4 provided between the cases 2 and 3. Has been. The front case 2 is a bottomed rectangular tube having an opening 13 on the back side by a front plate 11 formed in a square shape and an enclosure wall 12 that is integrally projected from the periphery of the front plate 11 and formed in a frame shape. It is formed in a shape.

  On the upper surface plate 14 constituting the enclosure wall 12, two projecting strips 17, 17 extending between the side surface plates 15, 16 are integrally projected so as to be parallel to each other. . Reference numeral 18 denotes an engaging groove which is recessed in the upper surface plate 14 so as to extend between the side surface plates 15 and 16 in parallel with the ridge body 17. On the inner side of the enclosure wall 12, step portions 12 a are provided over the entire circumference, and four studs 20 are integrally projected at the four corners of the front plate 11.

  The rear case 3 has a bottomed rectangular tube having an opening 23 on the front side by a back plate 21 formed in a square shape and a surrounding wall 22 that is integrally projected from the periphery of the back plate 21 and formed in a frame shape. It is formed in a shape. On the inner side of the upper surface plate 24 constituting the enclosure wall 22, as shown in FIG. 4, a fitting concave portion 27 extending between the side surface plates 25 and 26 and into which the two convex strips 17 and 17 are fitted. Is recessed. Reference numeral 28 denotes an engaging protrusion that engages with the engaging groove 18 described above, and protrudes from the upper surface plate 24 so as to extend between the side surface plates 25 and 26.

  In FIG. 1, reference numerals 29 denote screw insertion holes provided above and below the back plate 21. In FIG. 1 and FIG. 3, 30 and 30 are the drain openings provided in the both sides of the bottom face board 31 which comprises the enclosure wall 22, Comprising: The front case 2 is couple | bonded with the rear case 3 so that it may mention later. Is communicated with the lower end of the drainage channel 47.

  As shown in FIG. 3, a recess 32 is provided in a substantially central portion of the bottom plate 31, and an insertion groove 32 b formed in an elongated rectangle as shown in FIG. 5 is formed in the bottom 32 a of the recess 32. A pair of engagement holes 32c and 32c are provided on both sides of the insertion groove 32b. Corresponding to the insertion groove 32b, the back plate 21 is provided with a guide projection 33 formed in a U shape in plan view and provided with a screw hole 33a. Reference numerals 34 and 34 denote mounting pieces projecting from the back plate 21 so as to sandwich the guide convex portion 33, and the projecting height from the back plate 21 is lower than that of the guide convex portion 33. Reference numeral 35 denotes an attachment body integrally projecting from the bottom 32a of the recess 32, and a screw cylinder 36 into which a screw 39 described later is screwed is embedded as shown in FIG.

  In FIG. 5, reference numeral 37 denotes an engagement piece having a U-shaped groove 37 a, wherein a base portion 38 is bent at a right angle, and a screw 39 is screwed into the extended portion 38 a of the base portion 38. The width W2 of the U-shaped groove 37a is formed slightly larger than the width W1 of the guide convex portion 33 described above. In such a configuration, the engagement piece 37 is inserted into the rear case 3 through the insertion groove 32 b of the recess 32, and placed on the placement piece 34 so that the U-shaped groove 37 a is fitted into the guide protrusion 33. To do. Next, by engaging the screw 40 with the flange with the screw hole 33a of the guide convex portion 33, the engagement piece 37 is moved in the vertical direction (arrow) so that the U-shaped groove 37a is guided by the guide convex portion 33. (A-B direction) is supported movably. In this state, by screwing the screw 39 into the screw cylinder 36 of the attachment body 35, the engagement piece 37 moves in the direction of arrow A, and the base portion 38 is attached to the bottom portion 32 a of the concave portion 32 and accommodated in the concave portion 32. Is done. A cover 41 is detachably attached to the recess 32 and covers the recess 32, and a pair of elastic engagement pieces 41a, 41a facing each other are integrally projected on both sides, and these elastic engagement pieces 41a. , 41a are provided with engaging claws 41b, 41b that engage with the engaging holes 32c, 32c, respectively.

  As shown in FIG. 1, the partition member 4 includes a base portion 42 formed in a frame shape and a battery storage portion 43 integrally formed in a bottomed rectangular tube shape at the center of the base portion 42. Screw insertion holes 44 are provided at the four corners of the portion 42. The outer dimension of the base part 42 is set slightly smaller than the outer dimension of the opening 13 of the front case 2. On the upper side (in the direction of the arrow A) of the base portion 42, a roof 45 inclined downward from the central portion toward both sides is provided. A pair of embankments 46 and 46 are extended downward (arrow B direction). As will be described later, the dikes 46 and 46 are drainage passages that guide rainwater guided by the roof 45 downward by both side plates 25 and 26 of the rear case 3 when the front case 2 is coupled to the rear case 3. 47, 47 are formed.

  An engaging member 48 having a U-shaped cross section as shown in FIG. 6 protrudes from a substantially central portion on the lower side of the base portion 42. An introduction port 48a is provided for introducing the distal end portion 37b of the engagement piece 37 into the engagement member 48 when the engagement piece 37 is moved in the arrow A direction. In such a configuration, the screw 39 is screwed onto the screw cylinder 36 of the attachment body 35 as shown in FIG. 5 in a state where the openings 13 and 23 of the front case 2 and the rear case 3 are covered as shown in FIG. As a result, the distal end portion 37b of the engagement piece 37 enters the engagement member 48 from the introduction port 48a. The front end portion 37b of the engagement piece 37 entering the engagement member 48 is engaged with the engagement portion 48b of the engagement member 48, whereby the front case 2 is engaged with the rear case 3 as shown in FIG. Rotation in the clockwise direction in the figure with the protrusion 28 as the rotation center is restricted, and the front case 2 and the rear case 3 are coupled. In FIG. 1, 49 is a seal member attached to the front side of the base portion 42.

  Next, a method for assembling the electronic device configured as described above and a method for mounting the electronic device on a wall will be described. First, as shown in FIG. 1, the partition member 4 is fitted into the front case 2 through the opening 13 of the front case 2, and the peripheral edge of the base portion 42 of the partition member 4 is connected to the front case 2 via the seal member 49. It contacts with the step part 12a. Next, the partition member 4 is attached to the front case 2 by screwing the screw 50 inserted through the screw insertion hole 44 of the partition member 4 into the stud 20 of the front case 2. In this state, as shown in FIG. 7, the roof 45 and the bank 46 of the partition member 4 protrude from the opening 13 of the front case 2 in a side view.

  Next, the rear case 3 is attached to the wall 52 by bringing the rear plate 21 of the rear case 3 into contact with the wall 52 and inserting the screw 51 into the wall 52 through the screw insertion hole 29 of the rear plate 21. Next, the front case 2 to which the partition member 4 is attached is tilted, the upper surface plate 14 is inserted into the rear case 3 from the opening 23 of the rear case 3, and the engaging groove 28 of the front case 2 is engaged with the engaging protrusion 28 of the rear case 3. 18 is engaged. In this state, the bottom case 19 of the front case 2 is made to oppose the bottom plate 1 of the rear case 3 by turning the front case 2 counterclockwise in the figure with the engaging protrusion 28 as the rotation center. The rear side of the front case 2 is accommodated in the rear case 3.

  Next, the engaging piece 37 moves in the direction of arrow A by inserting the screwdriver into the recess 32 from below the rear case 3 and screwing the screw 39 into the screw cylinder 36 of the mounting body 35 as shown in FIG. The distal end portion of the engagement piece 37 enters the engagement member 48 from the introduction port 48a of the engagement member 48 and engages with the engagement portion 48b. Therefore, the front case 2 and the rear case 3 are configured such that the engaging protrusion 28 engages with the engaging groove 18 in the upper part and the engaging piece 37 engages with the engaging part 48b of the engaging member 48 in the lower part. The enclosure wall 22 of the rear case 3 is coupled so as to surround the enclosure wall 12 of the front case 2. By connecting the cases 2 and 3, drainage channels 47 and 47 for guiding rainwater guided by the roof 45 downward are formed by the dikes 46 and 46 of the front case 2 and the side plates 25 and 26 of the rear case 3. Is done. Thus, since both cases 2 and 3 can be combined only by screwing in one screw 39, the assembling work is facilitated and the assembling work time can be shortened.

  Further, in the electronic device 1 attached to the wall 52, the base portion 38 of the engagement piece 37 is accommodated in the recess 32 of the rear case 3 as shown in FIG. Since there is no need to provide a support piece for hanging on the wall, there is nothing exposed from the peripheral edge of the surrounding wall 22 of the rear case 3 when viewed from the front side (in the direction of arrow C), which may impair the appearance of the appearance. Absent.

  Further, a gap formed between the upper surface plate 14 of the surrounding wall 12 and the upper surface plate 24 of the surrounding wall 22 by the plurality of protruding body 17 and the fitting recess 27 into which the protruding body 17 is fitted. Since the waterproof distance against rainwater and the like entering from the water becomes longer, the water tightness is increased and the waterproof property is improved. In addition, not only are the parts required for waterproofing required, but the waterproofness can be improved by assembling both cases 2 and 3, so that the number of parts and the number of assembly steps can be reduced. Even if rainwater or the like enters the device, the rainwater can be guided to the drainage channel 47 through the roof 45 and drained from the drainage port 30 to the outside of the device.

  Finally, as shown in FIGS. 1 and 5, the engaging claws 41 b and 41 b are engaged with the engaging holes 32 c and 32 c of the recess 32 while elastically deforming the elastic engaging pieces 41 a and 41 a of the lid 41. Thus, the lid 41 is attached to the concave portion 32, and the concave portion 32 is covered with the lid 41. Thus, by providing the lid 41 that detachably covers the recess 32, the appearance of the appearance is not impaired.

It is a perspective view which decomposes | disassembles and shows the electronic device which concerns on this invention. It is a rear view in the state where the rear case of the electronic equipment concerning the present invention was removed. It is a front view which shows the rear case of the electronic device which concerns on this invention partially fractured | ruptured. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2 and shows a state where the electronic device according to the present invention is attached to a wall. FIG. 6 is a perspective view of a main part when the rear case is viewed from the front side in order to explain a state in which the engagement piece is assembled to the rear case of the electronic device according to the invention. FIG. 6 is a perspective view of a main part when the partition member is viewed from the front side in order to explain the operation of engaging the engagement piece with the partition member of the electronic device according to the present invention. It is sectional drawing for demonstrating the method to attach the electronic device which concerns on this invention to a wall. It is a perspective view which decomposes | disassembles and shows the waterproof structure of the conventional electronic device. It is sectional drawing which shows the waterproof structure of the conventional electronic device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electronic device, 2 ... Front case, 3 ... Rear case, 4 ... Partition member, 12, 22 ... Enclosure wall, 13, 23 ... Opening part, 17 ... Projection body, 18 ... Engagement groove, 27 ... Fitting Recessed part 28 ... engaging protrusion 29 ... screw insertion hole 30 ... drainage port 32 ... recessed part 37 ... engaging piece 41 ... lid 45 ... roof 47 ... drainage channel 48 ... engaging member 52 ... wall.

Claims (2)

A front case having an opening on the back side by a front plate and a frame-shaped enclosure wall protruding from the periphery of the front plate, and a frame-shaped enclosure wall protruding from the periphery of the back plate and the back plate In the waterproof structure of electronic equipment with a rear case opened on the front side by
A plurality of ridges extending between both side surfaces are arranged in parallel on the upper surface of the enclosure wall of the front case, and a fitting recess for fitting the ridges is provided on the upper surface of the enclosure wall of the rear case. ,
A waterproof structure for an electronic device, wherein both cases are coupled so as to surround the enclosure wall of the front case by the enclosure wall of the rear case in a state where the openings of the cases are covered with each other.   A partition member that covers the opening of the front case is provided, and a roof that is inclined downward from the center toward both sides is provided at an upper portion of the partition member, and is connected to the roof on both sides of the partition member and extends vertically. 2. The waterproof structure for an electronic device according to claim 1, wherein a drainage channel is provided, and a drainage port connected to the drainage channel is provided on a bottom plate of the enclosure wall of the rear case.

Images