JP5183577B2 - Electronic equipment housing structure - Google Patents

Description

  The present invention relates to a housing structure of an electronic device such as a communication device that performs information communication using a telephone line.

  As a conventional case structure of this type of electronic device, for example, the following case structure of an electronic device is known. That is, such a housing structure forms a box-shaped housing by superposing the upper case and the lower case, and forms a notch on the front side of the upper case and the lower case. An opening is formed on the front side, a front panel is assembled in the opening, and an engagement protrusion is formed on one of the left and right side walls of one of the upper case and the lower case, and the engagement An engagement recess that engages with the engagement protrusion is formed on one of the left and right side walls of the other case corresponding to the mating protrusion, and the engagement recess and the engagement recess are engaged with the engagement protrusion. The other case is rotated with respect to the one case with the engaging portion of the engaging protrusion as the hinge center, and the other side of the left and right side walls of the one case is the other side of the left and right side walls of the other case. In this process the opening The front panel is sandwiched between the upper case and the lower case, and the front panel is assembled into the opening, and the other side of the left and right side walls of the upper case and the lower case is screwed with a fastener. (See Patent Document 1).

JP 2006-19574 A

  In such a case structure of the conventional electronic device, while engaging the engaging protrusion with the engaging recess, the other case with respect to one case is centered on the engaging recess and the engaging protrusion engaging portion. Rotate to bring the end face of the other side of the left and right side walls of one case into contact with the end face of the other side of the left and right side faces of the other case. In this process, the upper case and the lower case at the opening When the front panel is sandwiched between the front panel and the front panel is incorporated into the opening, the engagement portion of the engagement recess in the engagement projection is formed in a concave arc shape, and the engagement projection that engages with the engagement recess is convex. Since it is formed in an arc shape, the upper case with respect to the lower case can be largely rotated while maintaining the engagement relationship between the engagement protrusion and the engagement recess, and as a result, an opening for incorporating the front panel By increasing the area As a front panel, for example, a large front panel full of information display amount such as LED and liquid crystal can be adopted by forming it to the size of the front of the casing almost full, and the amount of engagement between the engagement protrusion and the engagement recess Therefore, it is possible to realize the attachment of the upper and lower cases with a small number of screws.

  Therefore, the above-described conventional electronic device casing structure has a front panel for closing an opening formed on the front side of the casing side, together with an upper case and a lower case, in order to form a box-shaped casing. As a result, the number of parts is large, and the number of assembling steps increases accordingly.

  Therefore, in order to eliminate the front panel, for example, a side wall portion is formed over the entire circumference on each side portion of the upper case and the lower case, and the side wall portions are configured to face each other. Thus, it is conceivable that the front panel is constituted by a part of the side wall.

  By adopting such a configuration, both the upper case and the lower case are configured as a case body having a one-surface opening portion surrounded by a side wall portion in which each side surface portion is divided into upper and lower parts.

  As a result, usually, a printed wiring board for configuring an electronic device is installed in the upper case or the lower case by using a fastener such as a screw. Since the upper and lower cases are configured by overlapping the upper case or the lower case, the upper case or the lower case cannot be protruded to the outside, and the upper case or the lower case is retracted to the inner side from the side wall. It is necessary to install.

  Therefore, when installing the printed wiring board in the upper case or the lower case, the side wall portion of the upper case or the lower case is used when the printed wiring board is positioned at a predetermined position or when the fastener is subsequently attached. However, it interferes with the operator's hand, hinders the installation work, and deteriorates the installation workability.

  In addition, the side wall of the housing is configured by abutting the side walls of the upper case and the lower case. A parting line will be formed in the part, and this will impair the aesthetics of the design.

  Therefore, in view of the above, the present invention eliminates the conventional separate front panel and configures only two parts of the upper and lower case forming bodies with the casing structure divided into upper and lower parts. An object of the present invention is to provide a casing structure of an electronic device that improves the workability of mounting a printed wiring board and has an aesthetic appearance in design.

In order to achieve the above object, a housing structure for an electronic device according to the present invention includes, firstly, a top plate in which one case forming body of a pair of upper and lower case forming bodies is formed of a substantially rectangular flat plate. It is comprised with the standing wall-like side wall board integrally formed upright on each of the four side parts of the top plate, and among the four standing wall-like side wall boards, the three standing wall-like side wall boards have substantially the same height. A tall standing wall-like side wall plate and the other one is configured as a tall standing wall-like side wall plate that is formed in a height direction lower than the tall standing wall-like side wall plate, and the other case forming body is erected integrally with the side portion of one of the four side portions of the bottom plate and the bottom surface plate constituting a substantially rectangular flat plate corresponding to the top plate the back and a high-standing wall-shaped side wall plates back low upright side wall plates formed in Sehiku in the height direction than remain three sides The part constituted without forming the upright side walls, in abutted each other at the tip portion of the back lower vertical wall side wall plate and the back lower upright side wall plates, polymerizing together said pair of case forming body by and forms the shape of the box-shaped housing, in order to form such a two case forming body on the housing of the box-type, three constituting the one case forming body of the back high standing wall-shaped side wall panels Among them, an engaging protrusion having a convex arc-shaped engaging portion is formed at the tip of the tall standing wall-shaped side wall plate facing the low-rise standing wall-shaped side wall plate, and the convex arc shape of the engaging protruding piece An engagement piece having a concave arcuate engagement portion that engages with the engagement portion is formed on the side portion of the other case forming body facing the low-rise standing side wall plate, and (Circuit installation part that installs the printed circuit board that constitutes the electronic equipment on the case forming body side) Is formed, four covers one side between said back low standing side walls and the back lower vertical wall-shaped side wall panels of the side surfaces, three sides of the three back high vertical wall that remains of the box-shaped casing It is characterized by covering each with a side wall plate .

In order to achieve the above-described object, the housing structure of the electronic device according to the present invention includes, secondly, a top plate in which one case forming body of a pair of upper and lower case forming bodies is configured by a substantially rectangular flat plate. It is comprised with the standing wall-like side wall plate which stood and formed integrally in the four side parts of this top | upper surface board, respectively, and among the four said standing wall-like side wall plates, three standing wall-like side wall plates) are substantially the same height. And the other one is formed into a low-rise wall-shaped side wall plate that is formed to be low in the height direction with respect to the tall stand-up wall-shaped side wall plate, Further, the other case forming body stands up integrally with one of the four sides of the bottom plate and the bottom plate, which is constituted by a substantially rectangular flat plate corresponding to the top plate. A low-rise standing side wall plate that is lower in the height direction than the tall wall-like side wall plate, In order to form a box-shaped housing by superposing the pair of case forming bodies with each other in a state where the front end portions of the low-rise standing wall-like side wall plate and the low-rise standing side wall plate are abutted with each other, Among the three tall standing wall-like side wall plates constituting the case forming body, a convex arcuate engagement portion is provided at the tip of the tall standing wall-like side wall plate facing the low standing wall-like side wall plate. The low standing side wall plate in the other case forming body is formed with an engaging piece having a concave arc-shaped engaging portion that engages with a convex arc-shaped engaging portion of the engaging protruding piece. Is formed on the side of the side facing the other, and the other case forming body is provided with a board installation part for installing a printed wiring board constituting the electronic device, and the convex protrusion of the engagement protrusion The engaging portion and the concave arcuate engaging portion of the engaging piece have the same radius. Characterized in that it is drawn formed in a state of being eccentric with each other.

With this configuration, the casing is composed of two parts, the upper and lower case forming bodies, and the printed wiring board is installed on the board installation portion of the other case forming body. The other case forming body is a flat plate. The low-rise standing side wall plate is formed only on one side portion of the four side portions of the constructed bottom plate, and the projections such as the low-rise standing side wall plate are formed on the remaining side portions. from the absence, the operator can perform printed circuit board smoothly the task of installing the substrate holding portion becomes Rukoto be expected to reduce the man-hours.

And among the four standing wall side wall plates of one case forming body, three standing wall side wall plates are formed on a tall standing wall side wall plate, and are configured from the flat plate of the other case forming body. If it is configured as a front panel for installing an information display unit such as an LED or liquid crystal, for example, by selecting one of the three tall wall-like side wall plates, without such dividing lines on the front panel is formed, ing to be excellent in design on aesthetic properties.

In addition, the low-rise wall-like side wall plate of one case forming body and the low-rise standing side wall plate of the other case forming body are in contact with each other, and a dividing line is formed on one side of the housing. Although will be undesirably formed, in such a dividing line by so placing a connector such and switches constituting the electronic apparatus, Ru can be configured less so as not impair the appearance of the design.

In addition, according to the present invention, the concave arc-shaped portion of the engagement piece and the convex arc-shaped portion of the engagement protrusion have the same radius, but are drawn and formed in an eccentric state. In the process of engaging the engagement protrusion with the engagement piece to assemble both case forming bodies, the convex arc-shaped portion of the engagement protrusion and the concave arc-shaped portion of the engagement piece have the same diameter. Since it is drawn and formed in an eccentric state, a gap is formed between the convex arc-shaped portion and the concave arc-shaped portion, and the engaging piece is easily engaged with the engaging piece. be able to.

Further, the present invention is the above-mentioned invention, wherein the other wall is disposed on the tall wall-like side wall plate facing the low-rise wall-like side wall plate in the one case forming body so as to sandwich both side portions of the engaging protrusion. A pair of guide projecting pieces projecting toward the case forming body side and a pair of guide projecting piece receiving projections facing the low standing side wall plate so as to sandwich the engaging piece in the other case forming body. A hinge portion is formed by engaging the guide projection piece with the guide projection piece receiving projection portion, and forming the one case forming body to the other case forming body. The two case forming bodies are positioned at the same time.

With this configuration, when the two case forming bodies are assembled with each other, the engaging protruding pieces and the engaging pieces are formed, and the pair of guide protruding pieces protrude toward the other case forming body with the engaging protruding pieces interposed therebetween. Since the guide protrusion receiving projections provided so as to sandwich the engagement pieces on the side portions facing the low-rise standing side wall plate in the other case formation body are formed. From the stage before engaging the engaging protrusion with the engaging piece, the guide protruding piece is engaged with and engaged with the guide protruding piece receiving protrusion, and the two case forming bodies are positioned. Even if there is no side wall plate on the side portion other than the case where the low standing side wall plate is formed in the case forming body 3, both case forming bodies can be easily positioned and the engaging pieces are engaged with the engaging pieces. Work can be done easily and accurately .

  Furthermore, the present invention is the above-mentioned invention, wherein two other tall standing wall-like side wall plates and the other case forming body respectively connected to both side portions of the low standing wall-like side wall plate of the one case forming body. A positioning projection piece is formed on one of the other two side portions respectively connected to both side portions of the low-rise standing side wall plate, and a positioning projection piece fitting portion on which the positioning projection piece is fitted on the other side. The positioning projection piece is configured to be fitted to the positioning projection piece fitting portion.

  With this configuration, when the positioning protrusions are fitted to the positioning fitting portion, both case forming bodies are assembled in a fixed positioning configuration, and even if an external force is relatively applied. The electronic parts such as a printed wiring board housed in the housing are not displaced, and the wiring in the housing is not pulled or cut due to repeated displacement.

  In the present invention configured as described above, the casing is composed of two parts, the upper and lower case forming bodies, and the printed wiring board is installed on the board installation portion of the other case forming body. The short standing side wall plate is formed only on one side portion of the four side portions of the bottom plate formed of a flat plate, and the remaining side portion has a low standing side wall. Since there is no projection such as a board, the operator can smoothly perform the work of installing the printed wiring board on the board installation part, and can expect a reduction in work man-hours.

  Further, according to the present invention, of the four standing wall side walls of one case forming body, the three standing wall side wall plates are formed as tall standing wall side wall plates, and are configured from the flat plate of the other case. Since it will be polymerized directly to the bottom plate, if you select one of the three tall wall-like side wall plates and configure it as a front panel for installing information display units such as LEDs and liquid crystals The dividing line or the like is not formed on the front panel, and the design has excellent aesthetics.

  In addition, the low-rise wall-like side wall plate of one case forming body and the low-rise standing side wall plate of the other case forming body are in contact with each other, and a dividing line is formed on one side of the housing. Although it will be formed, by installing the connectors and switches constituting the electronic device on such a dividing line, it can be configured so as not to impair the aesthetics of the design.

It is the perspective view which drawn the housing structure of the electronic device which employ | adopted the Example which concerns on this invention with the upper case formation body facing up. It is the perspective view similarly drawn with the lower case formation body facing up. It is the top view similarly drawn from the top | upper surface board side of the upper case formation body. It is the top view similarly drawn from the baseplate side of the lower case formation body. It is AA sectional drawing of FIG. 3 similarly. It is BB sectional drawing of FIG. 4 similarly. FIG. 7 is an enlarged view of the circle D in FIG. 6. It is CC sectional drawing of FIG. 4 similarly. It is the figure which expanded and drawn the inside of the EE circle of FIG. 6 similarly. It is the figure which expanded and drawn the FF circle of FIG. 6 similarly. It is the perspective view similarly drawn and partially broken from the upper case formation body. It is the figure which expanded and drawn the inside of G circle of FIG. 11 similarly. It is the H arrow line view of FIG. 2 similarly. It is II sectional drawing of FIG. 13 similarly. It is the figure similarly expanded and drawn in the J circle of FIG. It is BB sectional drawing in the middle process which similarly incorporates an upper case formation body and a lower case formation body. It is the figure which expanded and drawn the inside of K circle of FIG. 16 similarly. It is CC sectional drawing in the middle process which similarly incorporates an upper case and a lower case formation body. It is the figure which expanded and drawn the inside of the H circle of FIG. It is a perspective view in the process in the middle of similarly incorporating an upper case formation body and a lower case formation body. It is the perspective view similarly expanded and drawn in the I circle of FIG. It is the perspective view drawn from the upper surface case formation body and upper surface side in the vertical use state similarly using the stand.

  In the embodiment of the casing structure of the electronic device according to the present invention, the casing structure is composed of two parts of the upper and lower cases, which are divided into the upper and lower cases by eliminating the conventional separate front panel. In addition, the mounting workability of the printed wiring board is improved and the design is aesthetically pleasing.

  Next, an embodiment for carrying out the present invention will be described with reference to FIGS.

  A housing 1 that houses an electronic device such as a communication device includes a pair of upper and lower case forming bodies 2 and 3.

  The upper case forming body 2 constituting one case forming body includes a top plate 21 formed of a substantially rectangular flat plate, and a standing wall-like side wall plate 22 integrally formed upright on four side portions of the top plate 21. It consists of and. Of the four standing wall-like side wall plates 22, the three standing wall-like side wall plates 22 are formed as tall standing wall-like side wall plates 22 a to 22 c having substantially the same height, and the remaining one standing wall-like side wall plate 22. Is formed in a low-rise standing wall-like side wall plate 22d formed so as to be short in the height direction with respect to the tall standing wall-like side wall plates 22a to 22c.

  The top plate 21 is formed with a plurality of top plate side air holes 12 for releasing heat generated inside the housing 1.

  For example, a connector 13 such as a LAN connector, a line connector, or a power connector is installed by forming a notch at the tip of the low-rise wall-shaped side wall plate 22d as appropriate. Embracing pieces 22d-1 projecting toward the lower case forming body 3 as the other case forming body are formed at both ends of the low standing wall-like side wall plate 22d. It is connected to the tall standing wall-like side wall plates 22a and 22b adjacent to 22d.

  Side wall vents 14 for releasing heat generated inside the housing 1 are also formed in the tall wall wall plates 22a and 22b adjacent to the tall wall wall plate 22d. As shown in FIG. 12 or FIG. 15, the side wall side vent hole 14 has a maze configuration (see the arrow in FIG. 15) so that dust or the like from outside air does not enter the housing 1.

  A pair of substantially L-shaped stand fitting grooves 15 are formed in the tall standing wall-like side wall plate 22a so as to divide the side wall-side vent holes 14. A stand 30 for vertical installation shown in 22 is configured to fit.

  Further, a card insertion hole 16 for inserting and installing a wireless card (not shown) in the housing 1 is formed in the tall standing wall-shaped side wall plate 22b.

  Of the three tall standing wall-like side wall plates 22a to 22c in the upper case forming body 2, the tall standing wall-like side wall plate 22c facing the lower standing wall-like side wall plate 22d is connected to the top plate 21 side. An inclined surface portion 22c-1 that is positioned, and an upright wall 22c-2 that is integrally connected to the inclined surface portion 22c-1 and abuts on the side portion 32c facing the low-rise standing side wall plate 32c-1 in the lower case forming body 3. It is comprised by and becomes the front panel part.

  The inclined surface portion 22c-1 is provided with a plurality of LED indicator lamps 22c-3 for displaying the presence / absence of connection of a power source and the like, and a display window portion 22c-4 closed by a transparent plate or the like is provided. The display window portion 22c-4 is formed to extend to the top plate 21.

  Further, as shown in FIG. 7, an engagement protrusion 4 having an outward facing surface formed as a convex arcuate engagement portion 4a is formed on the inner wall portion at both ends of the upright wall 22c-2. Alternatively, as shown in FIG. 21, a pair of guide projecting pieces 6 extending toward the lower case forming body 3 are formed on the tall standing wall-shaped side wall plate 22c so as to sandwich the engaging projecting piece 4 on both sides. The outwardly facing surfaces of the guide protrusions 6 are each formed as a concave arcuate guide surface 6a.

  The lower case forming body 3 includes a bottom plate 31 formed of a substantially rectangular flat plate corresponding to the top surface plate 21 and a height of the upper case forming body 2 among the four side portions 32 a to 32 d of the bottom plate 31. A low standing side wall plate 32d-1 is formed upright on one side portion 32d located on the standing wall side wall plate 22d side, and both end portions of the low standing side wall plate 32d-1 are cut out. A notch 32d-2 into which the holding piece 22d-1 is inserted is inserted.

  As shown in FIG. 5, the front end of the low-rise standing side wall plate 32 d-1 including the three side portions 32 a to 32 c and the notch portion 32 d-2 of the lower case forming body 3 is viewed from the side. An L-shaped hook portion 32-1 is formed, and the hook portion 32-1 is the tip of the tall standing wall-like side wall plates 22a to 22c and the low standing wall-like side wall plate 22d of the upper case forming body 2. The standing wall-like side wall plate 22, the side portions 32a to 32c, and the low-rise standing side wall plate 32d-1 are configured to be flush with each other by engaging with the hook projections 22-1. .

The side case 32c facing the low standing wall plate 32d-1 in the lower case forming body 3 has a concave arcuate engagement portion 5a with which the convex arcuate engagement portion 4a of the engagement protrusion 4 is engaged. the engagement piece 5 is provided are formed side by side three pieces in a state spaced apart facing each other, the engaging piece 5 such three pieces, are connected by the inner end connecting piece portion 5b together as shown in FIG. 21 Yes.

  The convex arcuate engagement portion 4a of the engagement protrusion 4 and the concave arcuate engagement portion 5a of the engagement piece 5 are drawn and formed so as to have the same radius but are eccentric from each other.

  Further, as shown in FIG. 9 and FIG. 21, corresponding to the guide protrusion 6 on the upper case forming body 2 side, the side portion 32 c of the lower case forming body 3 has three engagement pieces 5. A guide protrusion receiving projection 7 is formed so as to protrude toward the upper case forming body 2 so as to sandwich the two engaging pieces 5 existing outside, and the guide protrusion receiving protrusion 7 includes a guide A convex arcuate guide surface portion 7a is formed which engages and cooperates with the surface 6a to form a hinge portion.

  A plurality of upstanding boss portions 9 a are formed on the inner wall of the bottom plate 31 of the lower case forming body 3, and the tip end surface of the upstanding boss portion 9 a has a substrate installation portion 9 for installing the printed wiring board 8. It is composed.

  The printed wiring board 8 placed on the board installation part 9 is constructed by inserting a bolt 9b as a fastener into a mounting hole formed in some upstanding boss parts 9a. 9 will be sandwiched and installed. Further, when the lower case forming body 3 and the upper case forming body 2 are assembled, the printed wiring board 8 is pressed to the lower case forming body 3 side by the pressing boss 17 formed upright on the inner wall of the upper case forming body 2. ing.

  In addition, a pair of case assembly boss portions 18 that are spaced apart from each other are formed at positions near the low-rise standing side wall plate 32d-1 on the bottom plate 31 of the lower case formation body 3, and the case assembly boss portions are formed. 18 is formed with a screw mounting hole 18a into which the mounting screw 19 is screwed. The mounting screw 19 penetrates the printed wiring board 8 and stands on the inner surface of the top plate 21 in the upper case forming body 2. The upper and lower case forming bodies 2 and 3 are assembled and fixed by screwing to the formed case assembly boss portion 18 (see FIG. 6).

  Further, as shown in FIGS. 8 and 10, the other two side portions 32a, 32b adjacent to the low standing wall plate 32d-1 in the lower case forming body 3 project toward the upper case forming body 2 side. The positioning projection piece 10 is fitted to the other two tall standing wall-like side wall plates 22a and 22b which are adjacent to the tall standing wall-like side wall plate 22d in the upper case forming body 2 and which are adjacent to each other. The positioning projection piece fitting portion 11 to be joined is formed, and by fitting the positioning projection piece 10 to the positioning projection piece fitting portion 11, the upper and lower case forming bodies 2 and 3 after being assembled are displaced from each other. It is comprised so that it may be positioned.

  The positioning protrusions 10 may be formed on the tall standing wall-shaped side wall plates 22a and 22b, and the positioning protrusions fitting portion 11 may be formed on the side portions 32a and 32b.

  In the embodiment according to the present invention configured as described above, when the upper case forming body 2 is assembled in the lower case forming body 3 and the housing 1 is assembled, first, the printed matter is printed on the board installation portion 9 of the lower case forming body 3. The printed circuit board 8 is placed on the mounting boss 9a by placing the bolt 9b as a fastener inserted into the printed circuit board 8 in the mounting hole provided on the standing boss portion 9a. It is clamped and installed with the installation unit 9.

  Next, the lower case forming body 3 on which the printed wiring board 8 is installed has a work table (not shown) or the like in a state where the side portion 32b side where the engagement piece 5 is formed is positioned on the front side of the operator. Put it on.

  Next, the side wall 32b of the lower case forming body 3 is opposed to the tall standing wall-like side wall plate 22c in the upper case forming body 2, and the guide surface of the guide protrusion 6 provided on the tall standing wall-like side wall plate 22c. The upper and lower case forming bodies 2 and 3 are positioned by engaging 6a with the guide surface portion 7a of the guide protrusion receiving projection 7 (see FIG. 19).

  In this state, the upper case forming body is rotated with respect to the lower case forming body 3 in the direction of the arrow in FIG. 16 so that the low-rise standing wall-like side wall plate 22d is brought closer to the low-rise standing side wall plate 32d-1. . At this time, the engaging portion between the guide surface 6a and the guide surface portion 7a constitutes a hinge portion that rotates in a state where the upper case forming body 2 is positioned with respect to the lower case forming body 3, and as shown in FIG. The convex arcuate engagement portion 4a of the engagement protrusion 4 on the formed body 2 side is engaged with the concave arcuate engagement portion 5a of the engagement piece 5 with a gap S formed therebetween, Finally, the convex arcuate engagement portion 4a and the concave arcuate engagement portion 5a are the final engagement shown in FIG. 8 and FIG. In this state, the lower case forming body 3 and the upper case forming body 2 are assembled in a superposed state to constitute the housing 1.

  At this time, the positioning projection piece 10 on the lower case formation body 3 side is fitted to the positioning projection piece fitting portion 11 on the upper case formation body 2 side, and the upper case formation body 2 and the lower case formation body 3 are subjected to external force. Even if is added, the positions are not shifted from each other.

  Then, as shown in FIG. 6, the mounting screw 19 is fastened to the screw mounting hole formed in the case mounting boss portion 18 so as to penetrate the bottom plate 31 of the lower case forming body 3. The case 1 is configured with the case forming body 2 and the lower case forming body 3 being fixedly assembled.

  At this time, as shown in FIG. 5, when the hook protrusions 22-1 and the hooks 32-1 are engaged with each other, the tall wall-like side wall plates 22 a to 22 c of the upper case forming body 2 and the low-rise stand are formed. The wall-shaped side wall plate 22d, the side portions 32a to 32c of the lower case forming body 3, and the low-rise standing side wall plate 32d-1 are connected to each other without a step.

Housing 1 in the embodiment of the present invention constructed as described above, is covered with a 1 Tsugase low upright wall side wall 22d and the back lower upright side wall plates 32d-1 of its four sides, the remaining 3 By covering two side surfaces with three tall wall-like side wall plates 22 a to 22 c, the upper and lower case forming bodies 2 and 3 constitute two parts, and the printed wiring board 8 is formed of the lower case forming body 3. The lower case forming body 3 is installed on the substrate installation portion 9 and the lower case-forming body 3 has a low standing side wall plate 32d only on one side portion 32d among the four side portions 32a to 32d of the bottom plate formed of a flat plate. -1 is formed, and the remaining side portions 32a to 32c do not have projections such as a low-rise standing side wall plate, so that the operator can attach the printed wiring board 8 to the board installation portion 9. The installation work can be done smoothly and the number of work steps is low. So that can be expected.

  Further, the pair of guide protrusions 6 are formed on the upper case forming body 2 so as to protrude toward the lower case forming body 3, and the engaging pieces 5 provided on the side portions 32 c of the lower case forming body 3 are sandwiched. The guide protrusion receiving projection 7 is formed on the side portion 32c of the lower case forming body 3 facing the low standing side wall plate 32d-1, and is engaged when the upper and lower case forming bodies 2, 3 are assembled together. From the initial stage of assembling the upper and lower case forming bodies 2, 3 before engaging the engagement protrusion 4 with the piece 5, the guide surface 6 a of the guide protrusion 6 becomes the guide surface 7 a of the guide protrusion receiving projection 7. Since the upper and lower case forming bodies 2 and 3 are positioned by engaging and engaging with each other, the low standing side wall plate 32d-1 in the lower case forming body 3 is not formed. Even if there is no side wall plate in the side portions 32a to 32c, the upper and lower case forming bodies 2 3 positioning can be easily, it is possible to perform the task of engaging the engaging protrusion 4 on the engagement piece 5 easily and accurately.

  Further, of the four standing wall-like side wall plates 22 of the upper case forming body 2, three standing wall-like side wall plates are formed on the tall standing wall-like side wall plates 22 a to 22 c, and Since it is directly polymerized to the bottom plate 31 composed of a flat plate, for example, one tall standing wall-like side wall plate 22c is selected from the three tall standing wall-like side wall plates 22a to 22c, and the LED indicator lamp is selected. By constituting as a front panel for installing the information display section provided with 22c-3 etc., no dividing line or the like is formed on the front panel, and the design has excellent aesthetics.

  In addition, the low standing wall-like side wall plate 22d of the upper case forming body 2 and the low standing wall side wall plate 32c-1 of the lower case forming body 3 are in a state of abutting each other, and one side of the housing 1 A parting line will be formed in the part, but by placing the connectors 13 and the switches (not shown) constituting the electronic device on the parting line, the aesthetics of the design will be greatly affected. It can be prevented from reaching.

  Further, with this configuration, in the process of engaging the engagement protrusion 4 with the engagement piece 5 in order to assemble the upper and lower case forming bodies 2 and 3, the convex arcuate engagement portion 4 a of the engagement protrusion 4 Since the concave arcuate engagement portion 5a of the engagement piece 5 has the same diameter but is drawn in an eccentric state, the convex arcuate engagement portion 4a and the concave arcuate engagement portion 5a are drawn. A gap S is formed between the engagement protrusions 4 and the engagement protrusions 4 can be easily engaged with the engagement pieces 5 due to the presence of the gaps S.

  Further, with this configuration, when the positioning projection piece 10 is fitted to the positioning projection piece fitting portion 11, the upper and lower case forming bodies 2 and 3 are fixed together with the assembly by the assembly screws 19. Therefore, it is possible to reliably prevent the electronic device parts such as the printed wiring board 8 accommodated in the housing 1 from being displaced and the wiring in the housing 1 from being disconnected due to repeated displacement. be able to.

  In the embodiment according to the present invention, as shown in FIG. 1, the bottom plate 31 side of the lower case forming body 3 can be mounted on a mounting place such as a table and used in a lying state. For example, as shown in FIG. 22, it can be used in an upright state by fitting the stand 30 into the stand fitting groove 15 formed in the tall standing wall-like side wall plate 22a of the upper case forming body 2. Further, the stand 30 is fitted into a pair of stand fitting grooves 15-2 formed in a separated state so as to be positioned in the bottom plate side air hole 12-1 in the bottom plate 31 of the lower case forming body 3. The stand 30 can be used in a wall-hanging state by being suspended on the wall as it is.

  As described above, the present invention eliminates the conventional separate front panel and installs the printed wiring board even when the casing structure is composed of two parts of the upper and lower cases divided into upper and lower cases. Since it is possible to improve the workability and provide a housing structure of an electronic device with aesthetics in design, the housing structure of an electronic device such as a communication device that performs information communication using a telephone line Is preferred.

1 Housing 2 Upper Case Forming Body (One Case Forming Body)
21 Top Panel 22 Standing Wall Side Wall Plates 22a-22c Tall Standing Wall Side Wall Plate 22d Low Standing Wall Side Wall Plate 3 Lower Case Forming Body (Other Case Forming Body)
31 Bottom plate 32a-32d Side edge part 32d-1 Low standing side wall board 4 Engagement protrusion 4a Convex arcuate engagement part 5 Engagement piece 5a Concave arcuate engagement part 6 Guide protrusion 7 Guide protrusion receiving protrusion Part 8 Printed wiring board 9 Board installation part

Claims (5)

One case forming body (2) of the pair of upper and lower case forming bodies (2, 3) has a top plate (21) composed of a substantially rectangular flat plate and four side portions of the top plate (21). Each of the four standing wall-like side wall plates (22) includes three standing wall-like side wall plates (22) which are formed upright and integrally formed. A low standing wall shape formed on the high standing wall-shaped side wall plates (22a to 22c) and the other one formed to be tall in the height direction with respect to the tall standing wall shaped side wall plates (22a to 22c). The other case forming body (3) is constituted by a side wall plate (22d), and the other case forming body (3) includes a bottom plate (31) constituted by a substantially rectangular flat plate and the bottom corresponding to the top plate (21). One of the four side portions (32a to 32d) of the face plate (31) is integrally raised on the side portion (32d). The back high standing wall-shaped side wall panels (22 a to 22 c) back low upright side wall plates formed in Sehiku in the height direction than and a (32d-1), 3 single upright side wall on the side portions remaining to A pair of case forming bodies (in the state in which the front ends of the low-rise standing wall-like side wall plate (22d) and the low-rise standing side wall plate (32d-1) are abutted with each other without forming a plate. box-shaped casing by polymerizing one another 2,3) (1) and forms the shape of, in order to form such a double casing forming body (2,3) in a box-type housing (1), Among the three tall standing wall-like side wall plates (22a to 22c) constituting the one case forming body (2), the tall standing wall-like side wall facing the low standing wall-like side wall plate (22d). An engagement protrusion (4) having a convex arcuate engagement portion (4a) is formed at the tip of the plate (22c), and the An engagement piece (5) having a concave arcuate engagement portion (5a) engaged with a convex arcuate engagement portion (4a) of the mating protrusion (4) is connected to the back of the other case forming body (3). A printed wiring board (8) forming an electronic device is formed on the side portion (32b) facing the low standing side wall plate (32d-1), and on the other case forming body (3) side. A board installation part (9) is formed, and one of the four side surfaces of the box-shaped housing (1 ) is formed on the side wall plate (22d) with the low standing wall and the side wall with the low standing wall. (32d-1), and the remaining three side surfaces are covered with the three tall wall-like side wall plates (22a to 22c), respectively . The convex arcuate engagement part (4a) of the engagement protrusion (4) and the concave arcuate engagement part (5a) of the engagement piece (5) have the same radius but are offset from each other. The electronic device casing structure according to claim 1 , wherein the casing structure is drawn. One case forming body (2) of the pair of upper and lower case forming bodies (2, 3) has a top plate (21) composed of a substantially rectangular flat plate and four side portions of the top plate (21). Each of the four standing wall-like side wall plates (22) includes three standing wall-like side wall plates (22) which are formed upright and integrally formed. A low standing wall shape formed on the high standing wall-shaped side wall plates (22a to 22c) and the other one formed to be tall in the height direction with respect to the tall standing wall shaped side wall plates (22a to 22c). The other case forming body (3) is constituted by a side wall plate (22d), and the other case forming body (3) includes a bottom plate (31) constituted by a substantially rectangular flat plate and the bottom corresponding to the top plate (21). One of the four side portions (32a to 32d) of the face plate (31) is integrally raised on the side portion (32d). A tall standing side wall plate (32d-1) formed in a height lower than the tall standing wall-like side wall plates (22a to 22c). In a state where the front ends of the plate (22d) and the low-rise standing side wall plate (32d-1) are abutted with each other, the pair of case forming bodies (2, 3) are superposed on each other to thereby form a box-shaped housing ( In order to form 1), among the three tall standing wall-like side wall plates (22a to 22c) constituting the one case forming body (2), the tall standing wall-like side wall plate (22d) An engaging protrusion (4) having a convex arcuate engagement portion (4a) is formed at the tip of the opposed tall standing wall-like side wall plate (22c), and the convex circle of the engagement protrusion (4) is formed. An engagement piece (5) having a concave arcuate engagement portion (5a) engaged with the arcuate engagement portion (4a) is connected to the other case. The formed body (3) is formed on the side portion (32b) facing the low standing wall plate (32d-1), and an electronic device is provided on the other case formed body (3) side. A board installation portion (9) for installing a printed wiring board (8) to be formed is formed, and a convex arcuate engagement portion (4a) of the engagement protrusion (4) and a concave circle of the engagement piece (5). The arcuate engagement portion (5a) is drawn and formed in a state of having the same radius but being eccentric to each other. On the tall standing wall-like side wall plate (22c) facing the low standing wall-like side wall plate (22d) in the one case forming body (2) so as to sandwich both side portions of the engaging protrusion (4). A pair of guide protrusions (6) extending toward the other case forming body (3) is formed, and a pair of the engaging pieces (5) in the other case forming body (3) is sandwiched between the pair of guide protruding pieces (6). guide protrusion receiving projections the other case forming body (3) the back lower upright side wall plates in the form shape to the side portion opposite to (32d-1) (32c), said guide protrusion (6) Are engaged with the guide protrusion receiving projection (7) to form a hinge portion, and both the case forming body (2) and the other case forming body (3) are assembled together. It is configured to position the case forming body (2, 3). Housing structure of an electronic device according to any one of claims 1 to 3 that. Two other tall standing wall-shaped side wall plates (22a, 22b) respectively connected to both side portions of the low standing wall-shaped side wall plate (22d) of the one case forming body (2) and the other case forming body. A positioning protrusion (10) is formed on one of the other two side portions (32a, 32b) respectively connected to both side portions of the low-rise standing side wall plate (32d-1) in (3), and the other A positioning projection piece fitting portion (11) into which the positioning projection piece (10) is fitted is formed, and the positioning projection piece (10) is fitted into the positioning projection piece fitting portion (11). housing structure of an electronic device according to any one of claims 1 to 4, characterized in that the configuration was.