JP4026837B2 - Electronics - Google Patents

Description

  Recently, multiple dwelling houses composed of multi-level buildings have adopted a multi-dwelling system that has intercom functions and security functions such as disaster prevention and crime prevention by installing a housing information panel for each level of dwelling units. . A fire detector on the ceiling surface is connected to a housing information panel installed in each dwelling unit via a door phone with a relay function. In addition, a monitor device is attached to the housing information board, and it is also connected to a collective entrance machine installed at the common entrance of the same residential building or a call control device or video control device installed in the management room of each building. Is done. Residents at each level can use the home information board installed at their homes to make calls with visitors and management rooms, and in the event of a fire, etc. It is.

  The present invention relates to an electronic device, and more particularly to an electronic device such as a monitor device attached to a housing information panel in an apartment system as described above.

  As described above, the housing information panel provided with the monitor device of this type of housing system is connected to a collective entrance machine, a call control device, a video control device, or the like in the same building. A display device such as a liquid crystal display device for receiving and displaying a video signal photographed by the camera of the entrance hall is installed in the display window on the front surface of the monitor device attached to the house information board. A printed circuit board constituting a control board or the like for controlling the liquid crystal display is housed in the housing chamber inside the housing.

JP-A-9-148765

  A liquid crystal display for video is attached to the monitor device. Normally, such a display mounting structure is designed so that a square mounting frame surrounding the display is made and screwed. There are many cases. For mounting a printed circuit board constituting the control board, a cylindrical screw boss integrally formed on the mounting surface at the time of resin molding of the casing has been generally used.

  If a mounting frame is used for mounting a display device such as a monitor device as in the prior art, an extra mounting member is required, which increases the number of parts and the number of assembly steps.

  The present invention has been made to solve the problems of the conventional electronic devices as described above. The screw boss is reduced as much as possible to simplify the fixing structure, and the screw boss is used for a small board. The assembly is avoided and simplified.

  In particular, an electronic device including a cover for a power supply substrate that can be easily attached and detached and can surround and protect almost the entire circumference is realized. In addition, the reinforcing wing pieces for the pair of engaging pieces are made different in structure to provide a difference in flexibility so that the amount of displacement of one engaging piece during assembly is increased to prevent breakage.

The present invention has a main body composed of a side wall and a bottom plate, and a lid attached to the main body, and fixes a substrate on which circuit components are mounted on the bottom plate of the main body, and is surrounded by the side walls. In the electronic device composed of a box-shaped housing that accommodates the substrate in the housing chamber of the main body, a power supply substrate that is placed on the substrate via an insulating sheet is provided, and the insulation in the box shape The insulating sheet is provided in the housing chamber of the main body so as to surround the power supply substrate by a sheet.

  The present invention also includes a main body composed of a side wall and a bottom plate, and a lid attached to the main body, and a substrate on which circuit components are mounted is fixed on the bottom plate of the main body, and is surrounded by the side walls. In an electronic device comprising a box-shaped housing that accommodates the substrate, a power supply substrate placed on the substrate via an insulating sheet is provided in the housing body of the main body, and the insulating sheet is insulated The insulating sheet is formed in a box shape so as to surround the power supply board, and is provided in the housing chamber of the main body.

  Since the present invention is configured as described above and the sealing mechanism is configured as a folding type, it can be handled with the original flat plate material during carrying and storage, which makes handling very convenient. In particular, if a transparent material is used for the seal member as in the embodiment, it is possible to directly see the disconnection such as the dropout of the connector, which is convenient for maintenance and inspection. Moreover, since the rib which protrudes from the side wall of the housing into the accommodation chamber is provided, it is possible to prevent the folded seal member from being restored.

  In addition, since the paired holding pieces projecting from the inner wall surface are provided to hold the board, the board can be fixed without screws, and together with the above-described display fixing mechanism, The structure can be made simpler and lighter. In addition, the shape of the reinforcing wings is selected to prevent the breakage by giving a difference in the amount of displacement of the opposed gripping pieces, so that the trouble of replacing parts due to failure is saved and the number of spare parts is reduced. You can also

Hereinafter, the case where the embodiment of the present invention is applied to the above-described monitor device will be described with reference to the drawings.
Embodiment 1 FIG. 1 is a front view showing the configuration of Embodiment 1 of the present invention, FIG. 2 is a bottom view of FIG. 1, FIG. 3 is a left side view of FIG. 1, FIG. 4 is a rear view of FIG. FIG. 6 is a cross-sectional view showing the internal structure of the first embodiment. FIG.

  In FIG. 1 to FIG. 6, 1 is a monitor device, and 2 is a housing of the monitor device 1. The housing 2 is molded from a resin in a rectangular box shape and includes a storage chamber 20 inside. 2A is a lid on the front side of the housing 2, and 2B is a main body on the back side. 3 is a display unit of the monitor device 1, 3A is a window plate of the display unit 3, and 3B is a window frame. Reference numeral 3C denotes a substantially square liquid crystal display fitted in the window frame 3B, and reference numerals 4 to 7 denote first to fourth substrates. The window plate 3A of the display unit 3 is, for example, colorless and transparent or dark and translucent, and is provided on the front surface of the window frame 3B. Further, circuit components are mounted on the first to fourth substrates 4 to 7 and are accommodated inside the accommodation chamber 20 as shown in FIG. The molding structure of the lid 2A and the main body 2B is shown in FIGS.

  Reference numeral 21 denotes a cover plate of the cover body 2A, and reference numeral 22 denotes a peripheral wall obtained by bending four sides of the cover plate 21 and extending it to the back side. Opposite dovetail grooves 3a (FIG. 7) are formed in the horizontal direction near the upper surface of the cover plate 21, and the window plate 3A is detachably fitted thereto. Reference numerals 23 and 24 denote a bottom plate and a side wall of the main body 2B, 25 denotes a flange projecting from the upper end of the side wall 24 at a substantially right angle, and 26 denotes a peripheral wall formed on the front surface of the flange 25 and partially missing due to the notch. . The side wall 24 surrounds the left and right and upper and lower sides of the bottom plate 23 and is inclined so that the volume of the depth is slightly narrowed.

  The lid 2A constituting the front side of the housing 2 is arranged in parallel with a first substrate 4 having a small square shape that performs an interface function and a second substrate 5 that has a rectangular shape that performs a control function. It is attached. The fourth substrate 7 provided with the input / output terminals is fixed on the bottom plate 23 on the main body 2B side, and the third substrate 6 constituting the power supply substrate is surrounded on the fourth substrate 7 by a seal mechanism 60 which will be described later. It is designed to be placed.

  27 is a long hole penetrating the four corners of the flange 25, and 28 is a wiring outlet provided above and below the main body 2B. The main body 2B is attached to the peripheral wall 26 on the main body 2B side with the peripheral wall 22 on the main body 2B side after the main body 2B is attached to the rear surface of the flange 25 of the main body 2B by using the mounting screws inserted into the long holes 27 as the mounting surface 9. Are fitted together so that the lid 2A is attached to the front surface thereof. At a predetermined position of the lid body 2A and the main body 2B molded in the above-described structure, a characteristic mechanism portion of the present invention such as a display mounting mechanism and a substrate holding mechanism as described below is provided. A monitor device 1 is configured.

I. A display attachment mechanism 30 is a display attachment mechanism for attaching the liquid crystal display 3C to the lid 2A, and is provided in the vicinity of the window frame 3B of the lid 2A. Reference numeral 31 denotes two parallel L-shaped locking pieces for mounting, which are bent in an arc shape near the window near the top of the display unit 3 and have free ends protruding from the inner wall surface to the back side. 32 is a slit formed on both sides of each base portion of the locking piece 31, and 33 is a locking claw having a claw tip protruding into the window frame 3B (see also FIG. 5 and the like). Reference numeral 34 denotes a surrounding plate on the side of the window frame 3B, 35 is a receiving piece on the left and right of the front side, and 36 is two key-shaped pieces on the lower back side. Then, while pushing up the free ends of the two locking pieces 31, the lower part of the liquid crystal display 3C is inserted between the receiving piece 35 and the key-shaped piece 36 and fitted into the window frame 3B.

  When the liquid crystal display 3C is fitted into the window frame 3B, the two flexible locking pieces 31 are restored to the unloaded state, and the locking claw 33 is elastically placed on the upper back of the liquid crystal display 3C. Lock in contact. On the other hand, two insertion holes 37 corresponding to the locking pieces 31 are provided near the upper end of the second substrate 5 arranged along the back surface of the liquid crystal display 3C (see FIG. 12). Then, the tips of the free ends of the locking pieces 31 are inserted into these insertion holes 37, and the second substrate 5 is fixed to the four screw bosses 38 with screws 39. As a result, since the free ends of the two locking pieces 31 are inserted into the insertion holes 37, the liquid crystal display 3C in the window frame 3B is loosely fixed even if vibration or impact is applied to the monitor device 1. There is nothing wrong. According to the configuration of the first embodiment, a fixing mechanism for the liquid crystal display 3C that does not directly use screws is realized.

II. Mounting board holding mechanism 40 is a board holding mechanism. As described above, the first substrate 4 is constituted by a substantially square insulating plate having a narrow mounting surface and relatively small size, and few mounted circuit components. The board holding mechanism 40 is applied to such a circuit board. Although not shown in detail, 41 and 42 are notches (see FIG. 13). Two notches 41 are provided on the left side of the first substrate 4, and only one notch 42 is formed on the opposite side. 43 and 44 are paired holding pieces facing each other with a slight shift, projecting on the inner wall surface of the lid 2A so as to correspond to the notches 41 and 42, and having a slightly narrower notch width. The side shape of the holding pieces 43 and 44 facing each other is shown in FIG. As shown in the figure, the right holding piece 44 is made somewhat tall. 45 is a holding groove provided at the same height on the holding pieces 43 and 44 on both sides, and 46 is a triangular reinforcing wing formed on the left holding piece 43.

  Reference numeral 47 denotes a concave arc-shaped reinforcing wing formed on the back side of the right holding piece 44, and 48 denotes an inclined surface near the tip of the holding piece 44. Then, after the circuit components are mounted, the first substrate 4 is inclined slightly to the left as shown in FIG. 13 so that the two left-side notches 41 correspond to the holding grooves 45. If the right side is slid down along the inclined surface 48, the notch 42 and the holding groove 45 are fitted, and the first substrate 4 is fixedly held by the holding mechanism 40 without screws. Moreover, since the shape of the reinforcing wings 46 and 47 is changed to provide a difference in the flexibility (elasticity) of the pair of holding pieces, the amount of displacement within the elastic limit on the one holding piece 44 side increases, Even if a slightly strong external force is applied, the increase is absorbed by the holding piece 44 having a large displacement. Further, since the other gripping piece 43 is small in flexibility, it is held in its original position with a small amount of displacement. As a result, the first substrate 4 is held at a predetermined position in the horizontal plane, and the holding pieces 43 and 44 are not cracked or broken, so that it is possible to save the trouble of parts replacement and spare parts due to failure.

III. As described above, the fourth substrate 7 is fixed on the bottom plate 23 on the main body 2B side, and the third substrate 6 is placed on the fourth substrate 7 via the seal mechanism. ing. Reference numeral 60 denotes a sealing mechanism, and 61 denotes a sealing member as an insulating sheet in the sealing mechanism 60. Here, a thin plate of an insulating material made of a transparent polycarbonate resin is used for the seal member 61, and a specific development view is shown in FIG. 62 is a front surface portion of the seal member 61, 63 is both side surface portions, 64 is a back surface portion, and 65 is an upper surface portion. Reference numeral 66 denotes a notch for leading out the lead wire 67, and 68 denotes a folding line such as a perforation. The dimensions of the seal member 61 in the vertical y, horizontal x, and height z are selected to correspond to the mounting volume of the third substrate 6. Reference numeral 69 denotes a blade-like rib formed on the left and right side walls 24 of the main body 2B, and functions to prevent the folded seal member 61 from being restored.

  The seal member 61 configured in this manner is sequentially bent at a right angle to the back side of the paper surface at the folding line 68 with the front surface portion 62 as the center. The left and right back surface portions 64 bent in two stages go around to the back surface side, and a pentahedral seal box is formed by the seal member 61 to surround the periphery of the third substrate 6 except for the bottom. A lead wire 67 is led out from the upper and lower cutout portions 66. The third substrate 6 surrounded by the seal member 61 is placed on the upper surface of the fourth substrate 7 which has already been fixed with screws on the five bosses on the bottom plate 23 of the main body 2B. After placement, the derived upper and lower lead wires are respectively inserted into the connectors of the fourth substrate 7 and electrically connected. A sealed state of the third substrate 6 on which circuit components are mounted by the seal mechanism 60 is shown by a two-dot chain line in FIGS. Such a state is specifically performed by the following procedure. That is, the third substrate 6 is first wrapped with the seal member 61 outside the main body 2B. Next, in the state as it is, it is dropped into the storage chamber 20 of the main body 2B. As a result, the degree of opening of both side surfaces 63 is limited by the ribs 69 and placed on the fourth substrate 7 on the bottom plate 23. In this way, the third substrate 6 can be easily sealed by the three-dimensional seal member 61, and the third substrate 6 and the fourth substrate 7 can be reliably insulated. Accordingly, it is possible to incorporate two boards, a control board and a power supply board, into one housing. The sealing member 61 of the present embodiment can be provided on the substrate without requiring any attachment means, the point that can cover the whole substrate because of the three-dimensional shape, the point that the attachment state can be confirmed because it is transparent, It has a remarkable effect in that it is stored in a flat state at normal times, and prevents the use of ribs of the housing to return to a flat shape.

  As shown in FIG. 6, the sealing member 61 that surrounds the third substrate 6 after mounting and is mounted on the fourth substrate 7 after the molding is placed on the side wall 24 at two upper and lower sides of the side surface portion 63 in the mounted state. It is made to contact the formed rib 69. Accordingly, the expansion force acting in the lateral direction is blocked by the restoring force or the like accompanying the bending of the seal member 61. Further, contraction force due to external force or the like is regulated by the third substrate 6 surrounded by the seal member 61 and its mounted components. As described above, the third substrate 6 constituting the power supply substrate includes the mounting component by the at least tetrahedral box-shaped sealing member 61 in which the bent shape is held in a stable state without using fixing means such as screws. The periphery is sealed and accommodated in the accommodation chamber 20. Since the foldable seal mechanism 60 is constructed, it can be handled with the original flat plate material during carrying and storage, and the handling becomes very convenient. In particular, if a transparent material is used for the seal member 61 as in the first embodiment, it is possible to directly check for disconnection such as dropout of the connector, which is convenient for maintenance and inspection. In addition, the assembly workability is improved, and it can be confirmed whether the portion of the back surface 64 is securely fitted between the third substrate 6 and the fourth substrate 7.

IV. Other features
The following configuration is also employed as a feature of the first embodiment of the present invention. As shown in FIG. 3, the surface of the lid 2A to which the window plate 3A is attached is constituted by a uniform circular arc surface having a radius r with a horizontal plane passing through the substantially vertical center as a central axis. As described above, the housing 2 of the monitor device 1 is attached to the wall surface of the dwelling unit with the back surface of the flange 25 of the main body 2B as the attachment surface 9, and the peripheral wall 22 of the lid 2A is fitted to the peripheral wall on the main body 2B side. It comes to be installed. Therefore, since the arcuate surfaces of r which give a thin sensation to the upper and lower sides of the housing 2 in the mounted state are formed, the product value can be increased by an excellent design, and the housing that has been generally used conventionally. No injuries occur at the sharp corners of the square box.

  Another feature of the first embodiment is that a plurality of support bosses 71 shown in a cross shape as shown in FIG. 10 are provided on the bottom plate 23 of the main body 2B. The support boss 71 is in contact with the fourth substrate 7 fixed on the bottom plate 23 and fulfills the function of supporting it while positioning it. Although the detailed illustration of the structure is omitted, the shape is such that a triangular reinforcing wing is attached to a rectangular prism. Therefore, the area occupied on the main body 2B is much smaller than that of a cylindrical screw boss and the like, and even when molding the resin of the main body 2B, it is possible to suppress the occurrence of “sinks” and the like that reduce the heat capacity and deteriorate the quality. Further, since the contact surface of the support boss 71 with the fourth substrate 7 may be a small area, the mounting area of the fourth substrate is increased, and as a result, the apparatus can be downsized.

  Yet another feature of the first embodiment resides in a structure for attaching the lid 2A to the main body 2B. According to the mounting structure of the lid 2A of the present invention, the mounting is made by screwing between the block-shaped screwing portion 80A and the screwing portion 80B (FIGS. 9 and 10) formed on the lower peripheral wall 22 and the flange 25 of the housing 2. Screw 81 (FIG. 2) is utilized. The mounting screw 81 is forcibly pushed into a holding hole 82 (FIG. 8) having a small inner diameter provided in the screwing portion 80A, and is held so as to be screwed. On the other hand, the screw portion 80B is provided with a nut chamber, and a metal square nut (not shown) is detachably accommodated therein. Then, the locking claw 83 (FIG. 9) of the lid 2A is locked in the hole in the upper part of the main body 2B, and then the mounting screw 81 is screwed into the square nut, so that the lid 2A is mounted on the main body 2B. According to this mounting structure, the lid 2A is mounted with one screw, the mounting screw 81 is not lost, and the thin resin peripheral walls 22 and 26 are cracked or deformed due to excessive tightening due to contact between the blocks. Such an effect as not occurring.

  With this mounting structure, the lid 2A is mounted on the main body 2B, and the monitor device 1 having a wall surface or the like as the mounting surface 9 is attached to the housing information panel and installed in the dwelling unit. An embodiment of the monitor device 1 of the present invention installed in each dwelling unit is shown in the schematic diagram of FIG. In FIG. 15, 10 is a house information board, 11 is a door phone at the entrance, 12 is a fire detector connected to the house information board 10 via the door phone 11, and 13 is a gas leak alarm. Further, 14 is a collective entrance with camera, and 15 is a call / video control device provided in a management room, for example.

  As described above, the resident of each level dwelling unit uses the housing information panel 10 provided with the monitor device 1 installed at home, and relates to the visitor's visit contents, crime prevention / fire with the management room, etc. Information can be exchanged through audio and video. When exchanging information, the residents of the dwelling unit adjust the contrast and brightness of the image displayed on the liquid crystal display 3C by rotating the arc-shaped knurled adjusters 84 and 85 on the right side of the mounting screw 81 left and right. it can. At the corresponding position in the lower right of the front surface of the lid 2A, a sign 84a in which the outer periphery of the circle is surrounded by eight round dots displays the function on the side of the video image adjuster 84 side, and the left and right sides have a vertical diameter. The function of the light and dark adjuster 85 side is schematically represented by the divided semicircle mark 85a (FIGS. 1 and 7).

  In the above-described embodiment, the case where the present invention is applied to a wall-mounted monitor device is illustrated and described. However, as long as an electronic component is accommodated therein, an electronic device used in a plane may be used. In short, the present invention can be applied to all electronic devices. Furthermore, the shape, material, number, and the like of the liquid crystal display, the printed board, or the seal member described in the embodiment are not necessarily limited to the configurations described in the embodiment.

  As described above, according to the present invention, it is possible to provide an electronic device suitable for a monitor device having various features such as an extremely simple internal structure, light weight, and convenient handling. it can.

It is a front view which shows the structure of Embodiment 1 of this invention. It is a left view of FIG. It is a bottom view of FIG. It is a rear view of FIG. FIG. 3 is a longitudinal sectional view showing an internal structure of the first embodiment. FIG. 3 is a transverse sectional view showing the internal structure of the first embodiment. It is a front view which shows the shaping | molding structure of a cover body. FIG. 8 is a bottom view of FIG. 7. FIG. 8 is a rear view of FIG. 7. It is a top view of the 2nd substrate. It is sectional drawing which shows operation | movement of the holding mechanism of a board | substrate. It is a front view which shows the shaping | molding structure of a main body. It is a bottom view of FIG. It is an expanded view which shows the structure of a sealing member. It is explanatory drawing which shows the structure of an Example.

Explanation of symbols

1 monitor device, 2 housing, 2A lid, 2B main body, 3 display unit,
3A window plate, 3a dovetail, 3B window frame, 3C liquid crystal display (display),
4 first substrate, 5 second substrate, 6 third substrate, 7 fourth substrate, 9 mounting surface,
10 Housing information board, 11 Door phone, 12 Fire detector,
13 Gas leak alarm, 14 Collective entrance with camera,
15 Control room video / video control device 20 Storage room 23 Base plate 24 Side wall
25 flange, 26 peripheral wall, 30 display mounting mechanism, 31 locking piece,
32 slot, 33 locking claw, 37 insertion hole, 38 screw boss, 39 screw,
40 substrate holding mechanism, 41, 42 notch, 43, 44 holding piece.
45 holding groove, 46, 47 reinforcing wing, 48 inclined surface, 60 sealing mechanism,
61 sealing member, 62 front part, 63 side part, 64 back part,
65 upper surface part, 66 notch part, 68 folding line, 69 rib, 71 supporting boss,
80A screwing portion, 80B screwing portion, 81 mounting screw, 82 holding hole,
83 Locking claw, 84, 85 adjuster, r radius, y, x, z dimensions

Claims (6)

A body having a main body composed of a side wall and a bottom plate, and a lid attached to the main body, and a substrate on which circuit components are mounted on the bottom plate of the main body is fixed, and the housing chamber of the main body surrounded by the side walls In an electronic device comprising a housing molded in a box shape containing the substrate,
  Providing a power supply substrate mounted on the substrate via an insulating sheet;
  An electronic apparatus, wherein the insulating sheet is provided in a housing chamber of the main body so as to surround the power supply substrate by the box-shaped insulating sheet. A body having a main body composed of a side wall and a bottom plate, and a lid attached to the main body, and a substrate on which circuit components are mounted on the bottom plate of the main body is fixed, and the housing chamber of the main body surrounded by the side walls In an electronic device comprising a housing molded in a box shape containing the substrate,
  Providing a power supply substrate mounted on the substrate via an insulating sheet;
  The electronic device is characterized in that the insulating sheet is made of a thin plate of an insulating material, and is provided in the housing chamber of the main body in a state in which the insulating sheet is bent into a box shape so as to surround the power supply substrate. The insulation sheet is an electronic apparatus according to claim 2, characterized in that it is formed into a box shape composed of four surfaces are formed by at least a front portion both side surface portions and the back portion. The insulation sheet is provided a notch which leads are derived, the electronic device according to claim 1 or claim 2, characterized in that electrically connects the power source substrate and the substrate by the leads. And a rib which protrudes into the housing chamber from the side wall of the housing, the ribs into contact with the side surface portion of the insulating sheet, according to claim 3, characterized in that to prevent the restoration of folded insulation sheet Electronics. The electronic apparatus according to claim 1, wherein a transparent material is used for the insulating sheet .

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