Housing for electronic device and method of manufacturing housing for electronic device

Abstract

To provide a housing for an electronic device 2 that is easy to assemble and has excellent shielding properties at the connecting portion between a bottom frame 3 and a front panel 4.SOLUTION: A front panel 4 is attached to a housing 2 in the middle of assembly (Fig. 3). The front panel 4 can be attached to a bottom frame 3 by the simple operation of engaging and sliding a long hole 21 of a flange 20 of the front panel onto a protruding member 16 of the bottom frame 3 (Fig. 5), and the housing 2 is completed by covering it with a hoisting drum 8 and fixing it with a fixing screw 29 (Fig. 7). The gap between the flange 20 and the bottom panel 3 is set to the height of a base 17 of the protruding member, such that the amount of crushing of a first shielding material 15 in the gap is constant, and the electromagnetic wave shielding performance in that part is constant.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an electronic device housing in which electronic components, etc. are stored, and in particular to an electronic device housing that can be easily assembled without changing the position of a bottom frame on which electronic components, etc. are mounted, when placed on an installation surface, and that has excellent shielding properties at the connecting portion between the bottom frame and the front panel, and a method for manufacturing an electronic device housing. [Background technology]

[0002] 9 is a schematic diagram for explaining the assembly process of an electronic device and the structure of a housing for an electronic device proposed by the inventors of the present application. The description will be given on the assumption that fixing is performed manually by a worker on a workbench.

[0003] In step 1), various metal sheets 100 are used to assemble a chassis 101 as a frame on which electronic components 104 are mounted.

[0004] In step 2), a front panel 102 is attached to the front of the chassis 101, and a rear panel 103 is attached to the rear of the chassis 101.

[0005] In step 3), a printed circuit board, a module, a power supply, and various other components (collectively referred to as electronic components 104) are assembled into the chassis 101.

[0006] In step 4), the electronic device is rotated during assembly, so that the front panel 102 is placed against the workbench in a portrait orientation as shown in the figure.

[0007] In step 5), a rectangular cylindrical cover (rolling drum) 105 with its front and back sides open is inserted from the rear panel 103 side of the electronic device so as to fit over the chassis 101 and the like.

[0008] In step 6), foot rests 106 are attached to the four corners of the top surface of cover 105, and foot rests 107 are attached to the four corners of the bottom surface of cover 105. In addition, legs 108 are provided at the four corners of the rear panel.

[0009] In step 7), the electronic device is turned over again. As shown in the figure, the bottom surface of the chassis 101 is brought into contact with the workbench, and the electronic device is returned to its initial position (step 2) with the front panel 102 facing forward.

[0010] In step 8), a product label bearing the model name, serial number, etc. is affixed to the rear panel 103, and a decorative plate 109 is affixed to the front panel 102. Summary of the Invention [Problem to be solved by the invention]

[0011] The above-described conventional manufacturing process for electronic devices or the structure of a housing for electronic devices have the following problems. That is, in step 5), the cover (rolling drum) 105, which is the main body of the electronic device housing, is attached by inserting it from the side of the back panel 103. For this reason, in the previous step 4), it was necessary to change the position of the electronic device so that the front panel 102 faces downward. Since an electronic device weighs, for example, several tens of kilograms, and a certain amount of force is required to change the position, only physically strong workers or workers who can operate a machine for changing the position can assemble the electronic device using this step. In addition, when changing the position, a support part is also required to support the electronic device so that the front panel 102 does not directly contact the workbench (or the ground). Furthermore, as is clear from FIG. 1, in step 5) of assembling the cover 105, a work space twice as high as the length of the electronic device in the depth direction is required.

[0012] In step 5), in the step of inserting and attaching cover 105 from the side of rear panel 103, the tip of cylindrical cover 105 is abutted against a shielding material (not shown) provided on the rear side of front panel 102, and cover 105 is fixed to front panel 102 and rear panel 103 in a state in which the shielding material is crushed. Since this shielding material determines the shielding performance of the electronic device on the front side of the housing, the degree of crushing of the shielding material by cover 105 needs to be set to a predetermined state that can achieve the required shielding performance. However, due to the finishing material at the tip of cover 105 that presses the shielding material and dimensional errors of cover 105, the crushing state of the shielding material is not necessarily constant, and there is a problem that the shielding performance on the front panel side of the housing is difficult to stabilize.

[0013] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a housing for electronic devices that can be easily assembled without changing the position of the bottom frame on which electronic components are mounted when it is placed on the installation surface, and that has excellent shielding properties at the connection between the bottom frame and the front panel. [Means for solving the problem]

[0014] The electronic device housing 2 described in claim 1 is a bottom frame 3 on which electronic components are mounted; A front panel 4 connected to the front side of the bottom frame 3; A winding drum 8 that covers the bottom frame 3 and the front panel 4 and is connected to the bottom frame 3 and the front panel 4; Equipped with The connecting portion between the bottom frame 3 and the front panel 4 is provided with a protrusion member 16 having a height which keeps the gap between the bottom frame 3 and the front panel 4 constant, and a long hole 21 into which the protrusion member 16 is inserted.The bottom frame 3 and the front panel 4 are normally assembled by inserting the protrusion member 16 into the long hole 21 and moving the protrusion member 16 and the long hole 21 relative to each other.

[0015] The electronic device housing 2 according to claim 2 is the electronic device housing 2 according to claim 1, The protruding member 16 includes a base portion 17 having a large outer diameter, a head portion 18 having a small outer diameter, and a rod portion 19 having a small outer diameter that connects the base portion 17 and the head portion 18. The long hole 21 has a width that allows the head 18 to pass therethrough, The head 18 of the protrusion member 16 is inserted into the long hole 21, the protrusion member 16 and the long hole 21 are moved relatively along the longitudinal direction of the long hole 21, and the end of the long hole 21 is engaged with the rod portion 19 of the protrusion member 16, thereby determining the distance between the bottom frame 3 and the front panel 4 by the length of the base portion 17 of the protrusion member 16.

[0016] The electronic device housing 2 according to claim 3 is the electronic device housing 2 according to claim 1, A first shielding material 15 for shielding between the bottom frame 3 and the front panel 4 is provided in the gap between the bottom frame 3 and the front panel 4.

[0017] The electronic device housing 2 according to claim 4 is the electronic device housing 2 according to claim 3, A second shielding material 22 is provided between the front panel 4 and the winding drum 8 to provide shielding between the front panel 4 and the winding drum 8.

[0018] The electronic device housing 2 according to claim 5 is the electronic device housing 2 according to claim 4, A flange 20 is provided on the rear side of the front panel 4 so as to extend in the rear direction and conform to the outer shape of the front panel 4. The first shield material 15 is sandwiched between an outer surface of the flange 20 and an inner surface of the bottom frame 3 facing the outer surface of the flange 20, The second shielding material 22 is characterized in that it is sandwiched between the outer surface of the flange 20 and the inner surface of the winding drum 8 facing the flange 20 .

[0019] The electronic device housing 2 recited in claim 6 is the electronic device housing 2 recited in claim 5, further comprising a spacer member 25 of a predetermined height provided on an outer surface of the flange 20, and a fixing member 29 for fixing the winding drum 8 to the spacer member 25, The second shielding material 22 arranged on the outer surface of the flange 20 is sandwiched between the flange 20 and the winding drum 8 fixed to the spacer member 25 by the fixing member 29.

[0020] The method for manufacturing the electronic device housing 2 according to claim 7 includes the steps of: A method for manufacturing an electronic device housing 2 including a bottom frame 3 on which electronic components are mounted, a front panel 4 connected to a front side of the bottom frame 3, and a roll 8 covering the bottom frame 3 and the front panel 4 and connected to the bottom frame 3 and the front panel 4, comprising: The bottom frame 3 is placed on an assembly plane. A first shielding material 15 is provided along the edge of the front side of the bottom frame 3, A second shielding material 22 is provided on the upper edge, right edge, and left edge of the front panel 4, At the connection portion between the bottom frame 3 and the front panel 4, a protruding member 16 provided on one of the bottom frame 3 and the front panel 4 is inserted into a long hole 21 provided on the other of the bottom frame 3 and the front panel 4, and the protruding member 16 and the long hole 21 are moved relative to each other to place the bottom frame 3 and the front panel 4 in a properly assembled state with a predetermined gap therebetween; The bottom frame 3 and the front panel 4 are covered with the winding drum 8, and the bottom frame 3 and the front panel 4 are connected to the winding drum 8. Effect of the Invention

[0021] According to the electronic device housing described in claim 1, the electronic device housing can be easily manufactured by placing the bottom frame on an assembly plane such as an assembly table, connecting the front panel to the bottom frame with a structure that is easy to work with by combining protruding members and long holes, and then covering and fixing the assembled bottom frame and front panel with a roll. In other words, there is no need to move the assembled parts during assembly as in the past, and the parts can be efficiently assembled by stacking them one by one on the assembly plane, and the dimension of the gap between the bottom frame and the front panel can be set to a desired value due to the connecting structure using the protruding members and long holes, so that the shielding performance is stable at least when a shielding member is provided between the bottom frame and the front panel.

[0022] According to the electronic device housing described in claim 2, the dimension of the gap between the bottom frame and the front panel can be accurately determined to be the same dimension as the thickness of the base of the protrusion member by performing a simple assembly operation of inserting the head of the protrusion member into the long hole, relatively moving the long hole and the protrusion member so that the protrusion member moves along the longitudinal direction of the long hole, and engaging the rod part of the protrusion member with the end of the long hole. Moreover, since the dimension of the gap between the bottom frame and the front panel can be precisely set to a value equivalent to the thickness of the base, the shielding performance is stabilized at least when a shielding member is provided between the bottom frame and the front panel.

[0023] According to the electronic device housing of claim 3, the first shielding material is provided in the gap between the bottom frame and the front panel, the dimensions of which are precisely set, so that the amount of compression of the first shielding material is stably set to a value equivalent to the thickness of the base of the protruding member, thereby stabilizing the shielding performance in at least a part of the gap between the bottom frame and the front panel.

[0024] According to the electronic device housing of claim 4, the second shielding material provided between the front panel and the winding drum stabilizes the shielding performance between the front panel and the winding drum.

[0025] According to the electronic device housing described in claim 5, the first shielding material is crushed while being sandwiched between the outer surface of the flange and the inner surface of the bottom frame, so the amount of crushing is relatively stable and the shielding performance in this portion is stabilized. The second shielding material is crushed while being sandwiched between the outer surface of the flange and the inner surface of the hoisting drum, so the amount of crushing is relatively stable and the shielding performance in this portion is stabilized.

[0026] According to the electronic device housing described in claim 6, the second shielding material is disposed on the outer surface of the flange, the winding drum is placed on the second shielding material and the spacer member, and the winding drum is fixed to the spacer member by a fixing member, so that the gap between the winding drum and the flange can be set to a dimension corresponding to the height of the spacer member, and the second shielding material can be sandwiched between the winding drum and the flange in a state where it is compressed by a predetermined dimension. Therefore, the amount of compression can be precisely set to a desired value, and the shielding performance in this portion is stabilized.

[0027] According to the manufacturing method for an electronic device housing described in claim 7, the electronic device housing can be easily manufactured by placing the bottom frame on an assembly plane such as an assembly table, connecting the front panel to the bottom frame with a structure that is easy to work with by combining protruding members and long holes, and then covering and fixing the assembled bottom frame and front panel with a roll of wire. In other words, there is no need to move the assembled parts during assembly as in the past, and each part can be assembled by stacking them one by one on the assembly plane, and the connecting structure using the protruding members and long holes allows the dimensions of the gap between the bottom frame and the front panel to be precisely set, so that the shielding performance of the first shielding material is stabilized at least between the bottom frame and the front panel. [Brief description of the drawings]

[0028] [Figure 1] 1 is a perspective view of an electronic device according to an embodiment, viewed from diagonally above. [Diagram 2] 1 is a perspective view illustrating a state in which an electronic device according to an embodiment is disassembled into components. [Diagram 3]1 is a perspective view showing a state immediately before a step of attaching the front panel to the bottom frame after assembling components other than the hoist body and the front panel in the assembly of the electronic device of the embodiment. FIG. [Figure 4] FIG. 1A is a front view of an electronic device of an embodiment, FIG. 1B is a cross-sectional view taken along the line AA shown in FIG. 1A, and FIG. 1C is an enlarged cross-sectional view of part (c) shown in FIG. 1B. [Diagram 5] 10A to 10C are perspective views illustrating a procedure for attaching a front panel to a bottom frame in the assembly of the electronic device according to the embodiment. [Figure 6] 10A to 10C are plan views illustrating steps in a process of attaching a front panel to a bottom frame in assembling the electronic device of the embodiment. [Figure 7] 11 is a perspective view showing a process of attaching a hoist body after attaching a front panel to a bottom frame in assembling the electronic device of the embodiment. FIG. [Figure 8] 1A and 1B are perspective views of a front panel of an electronic device according to an embodiment, the front panel being cut along a vertical cut plane perpendicular to the front panel, and an enlarged perspective view of a portion of the cut plane. [Figure 9] 1A to 1C are schematic diagrams illustrating an assembly process for an electronic device proposed by the present inventors prior to filing the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] An electronic device and a housing for an electronic device according to an embodiment of the present invention will be described with reference to FIGS. In the following description, an electronic device housing (hereinafter also simply referred to as a housing) is a concept indicating, for example, a box for housing electric / electronic / mechanical parts, or a box for housing a chassis assembled from various metal sheets and on which electric / electronic parts are mounted. Also, an electronic device is a concept indicating a final product assembled by housing the electric / electronic / mechanical parts or the chassis in the electronic device housing, and although there are no particular limitations on its function and use, an optical spectrum analyzer is given as an example of an electronic device in this embodiment.

[0030] The structure of the electronic device 1 will be described. As shown in Fig. 1, the electronic device 1 includes a housing 2, which is a box-shaped storage container. As shown in the exploded perspective view of Fig. 2, the housing 2 includes a bottom frame 3, a front panel 4 provided on the front side of the bottom frame 3, a rear panel 5 provided on the rear side of the bottom frame 3, a right side frame 6 provided on the right side of the bottom frame 3, a left side frame 7 provided on the left side of the bottom frame 3, and a winding drum 8 that is placed over the bottom frame 3 to cover the front panel 4, the rear panel 5, the right side frame 6, and the left side frame 7 and is connected to them by screws. The winding drum 8 is an integrated cover-like member that includes a top plate 8a parallel to the bottom frame 3, a right side plate 8b parallel to the right side frame 6, and a left side plate 8c parallel to the left side frame 7, and its cross-sectional shape when cut along a plane parallel to the front panel 4 is approximately U-shaped and open downward. The right side frame 6 and the left side frame 7 are connected to a right side plate 8b and a left side plate 8c of the winding drum 8, respectively, thereby increasing the rigidity of the housing 2.

[0031] 2, various devices including electronic components necessary for achieving the functions of an optical spectrum analyzer are mounted inside the housing 2. Specifically, a sub-chassis 9 fixed to the bottom frame 3, a power supply unit 10 and an SSD 11 mounted on the sub-chassis 9, an optical unit 12 configured by assembling components on the main chassis, a main board 13 mounted on the bottom frame 3, and the like are provided inside the housing 2. Note that on the surface side of the front panel 4, an operation device 4a for operating the internal devices, a display means 4b for displaying various information, and the like are provided.

[0032] The assembly process (assembly method) of the electronic device 1 will be described. As shown in Figure 2, when assembling this electronic device 1, the bottom frame 3 is placed on the flat upper surface of a workbench, and the sub-chassis 9, power supply unit 10, SSD 11, optical unit 12, main board 13, etc. are attached to the upper surface of the bottom frame 3. Furthermore, as shown in Figure 3, the rear panel 5, right side frame 6, and left side frame 7 are assembled and secured on top of the bottom frame 3 with screws, and then the front panel 4 is attached.

[0033] The four sides of the front side of the electronic device 1, i.e., the parts corresponding to the four sides of the front panel 4, are required to have a shielding property to prevent electromagnetic waves from entering the housing 2 from the outside, or to prevent electromagnetic waves from leaking from the housing 2 to the outside. For this reason, when the housing 2 is in an assembled state, a shielding material that blocks electromagnetic waves is provided around the front panel 4, i.e., between the four sides of the front panel 4 and the bottom frame 3 and the winding drum 8. The material of the shielding material is not limited, but for example, a conductive polyurethane foam with excellent restoring elasticity can be used.

[0034] As shown in Fig. 3, a first shielding material 15 is provided on the upper surface of the front side of the bottom frame 3 to provide shielding between the bottom frame 3 and the lower side of the front panel 4. The assembly structure and assembly procedure for attaching the front panel 4 to the bottom frame 3 with the first shielding material 15 sandwiched between the bottom frame 3 will be described with reference to Figs. 3 to 6.

[0035] FIG. 4A is a front view of the electronic device 1, FIG. 4B is a cross-sectional view taken along the line AA of FIG. 4A, and FIG. 4C is an enlarged cross-sectional view of part (c) shown in FIG. 4B, showing the connection structure between the front panel 4 and the bottom frame 3.

[0036] As shown in Fig. 4(c) and Fig. 5, which is a perspective view of the connecting structure between the front panel 4 and the bottom frame 3, a plurality of (in this embodiment, for example, three) protruding members 16 having a height for maintaining a constant gap between the front panel 4 and the attached front panel 4 are fixed at a predetermined interval to the upper surface of the front side of the bottom frame 3. The protruding members 16 each have a large outer diameter and include a disk-shaped base 17 fixed to the bottom frame 3, a disk-shaped head 18 having a small outer diameter, and a cylindrical rod 19 having a small outer diameter and connecting the base 17 and the head 18. The base 17, head 18, and rod 19 are integrated at their respective centers.

[0037] As shown in Figures 4(c) and 3, a flange 20 protruding toward the rear is provided continuously in a rectangular circumferential shape on the rear side of the front panel 4 along the outer shape of the front panel 4. Note that in Figure 3, the flanges 20 on the left and top sides of the front panel 4 are visible, while in Figure 4(c), the flange 20 on the bottom side of the front panel 4 is shown in cross section. Although not shown in Figure 3, the flange 20 on the right side of the front panel 4 has the same structure as the flange 20 on the left side.

[0038] As shown in Fig. 4(c), Fig. 5 which is a perspective view of the connecting structure between the front panel 4 and the bottom frame 3, and Fig. 6 which is a plan view of the connecting structure between the front panel 4 and the bottom frame 3, the flange 20 on the lower side of the front panel 4 is provided with elongated holes 21 into which the protruding members 16 are inserted, at positions corresponding to the protruding members 16 of the bottom frame 3 to be attached. The elongated holes 21 are long in the depth direction of the housing 2 (the direction connecting the front and back, for example, the up-down direction on the paper in Fig. 6), and have a width sufficient to allow the heads 18 of the protruding members 16 to be inserted.

[0039] When connecting the front panel 4 and the bottom frame 3, the front panel 4 is moved from the position shown in FIG. 3 to the front side of the housing 2 being assembled as shown in FIG. 6(a), and then, as shown in FIG. 5(a), the positions of the long hole 21 and the protrusion member 16 in a plan view are aligned, and the front panel 4 is moved downward as indicated by the arrow in the same figure.

[0040] 5(b) and 6(b), head 18 of protrusion member 16 is inserted into one end of long hole 21 (the end farther from the front of front panel 4), and front panel 4 is moved in a direction approaching rear panel 5 as shown by the arrow in Fig. 5(b). Protrusion member 16 and long hole 21 move relatively to each other along the longitudinal direction of long hole 21 (i.e., the depth direction of housing 2).

[0041] As shown in Fig. 5(c) and Fig. 6(c), the head 18 of the protruding member 16 moves to the other end of the long hole 21 (the end closer to the front of the front panel 4), and as a result, as shown in Fig. 4(c), the other end of the long hole 21 formed in the flange 20 engages with the rod portion 19 of the protruding member 16, and the length of the gap between the flange 20 of the front panel 4 and the bottom frame 3 becomes the height of the base 17 of the protruding member 16. Therefore, the first shielding material 15, which had a height greater than the gap, is crushed in a stable state by the bottom frame 3 and the flange 20, both of which are flat plate-like members, and becomes the same height as the base 17. Therefore, the electromagnetic wave shielding structure at the lower edge of the front side of the electronic device 1 can reliably and stably achieve the desired value expected at the time of design.

[0042] In the above-described state, the front panel 4 and the bottom frame 3 are merely assembled, but not fixed, by the engagement of the protruding member 16 and the long hole 21. As will be described below, by placing the winding drum 8 over the partially assembled housing 2 and fixing it with a fixing screw as a fixing member, all the members of the housing 2, including the front panel 4, are assembled into a box shape, and the necessary shielding properties are achieved all around the front panel 4.

[0043] 7, a second shielding material 22 is provided on the flanges 20 on the upper, right and left sides of the front panel 4 (the flange 20 on the right side is not shown in FIG. 7) in order to shield the gap between the second shielding material 22 and the winding drum 8 which is placed from above the housing 2 in the middle of assembly. The assembly structure and procedure for attaching the winding drum 8 to the housing 2 in the middle of assembly with the second shielding material 22 sandwiched between the flanges 20 of the front panel 4 will be described with reference to FIG. 7 and FIG. 8.

[0044] The material of the second shielding material 22 may be the same as that of the first shielding material 15, but a material having different elasticity and shielding properties may be used. The second shielding material 22 may be a single continuous shielding material along the flanges 20 on the upper, right and left sides of the front panel 4, or may be an independent shielding material for each side. If each side is independent, it is preferable to prevent the occurrence of areas with insufficient shielding properties, for example by providing overlapping parts at the joints between the sides. The same applies to the joint with the lower side of the front panel 4.

[0045] As shown in Fig. 7, the winding drum 8 is placed over the partially assembled housing 2, which is composed of parts other than the winding drum 8. Then, the front ends of the top plate 8a, right side plate 8b, and left side plate 8c of the winding drum 8 (the right ends of each plate in Fig. 7) are fixed to the flanges 20 on the upper, right, and left sides of the front panel 4 with fixing screws (not shown) as fixing members. In addition, the lower ends of the right side plate 8b and left side plate 8c of the winding drum 8 are fixed to the right side frame 6 and left side frame 7, respectively, with fixing screws (not shown) as fixing members.

[0046] The lower view of FIG. 8 is a perspective view of the right part of the front side of the housing 2 cut by a vertical plane perpendicular to the front panel 4, and the upper view of FIG. 8 is a partially enlarged view of the cut part shown in the lower view. As shown in the partially enlarged view, a spacer member 25 is fixed to the flange 20 of the front panel 4 by penetrating through it. The spacer member 25 is a columnar member that penetrates the flange 20, and has a female threaded portion 26 with a female thread provided on its inner surface, and an upper end portion 27 that is integrally provided with the upper end portion of the female threaded portion 26 and hooked onto the upper surface of the flange 20. On the upper surface of the flange 20, a second shielding material 22 is arranged along the longitudinal direction of the upper side of the front panel 4 (left and right direction when viewed from the front) on the side closer to the surface of the front panel 4 than the spacer member 25. The upper plate 8a of the winding drum 8 is placed on the second shielding material 22 and the spacer member 25. A through hole 28 is provided in advance in the upper plate 8a. As shown in FIG. 8, the fixing screw 29 serving as the fixing member mentioned above is inserted through this through hole 28 and screwed into the female threaded portion 26 of the spacer member 25, fixing the upper plate 8a to the upper surface of the upper end portion 27 of the spacer member 25.

[0047] With the housing 2 assembled as described above, the second shielding material 22 can be sandwiched and compressed between the outer surface of the flange 20 on the upper side of the front panel 4 and the inner surface of the upper plate 8a of the winding drum 8, and its thickness can be set to a dimension equivalent to the height of the upper end 27 of the spacer member 25. In other words, the amount of compression of the second shielding material 22 can be precisely set to a desired value, so that a stable, predetermined shielding performance can be achieved on the upper side of the front panel 4.

[0048] The right and left sides of the front panel 4 are provided with a shielding structure similar to that of the upper side of the front panel 4 described above, and provide the same shielding performance as the upper side of the front panel 4.

[0049] According to the manufacturing process of the electronic device 1 of the embodiment described above, the bottom frame 3 is placed on an assembly plane such as an assembly table, the internal mechanism is assembled on the bottom frame 3, the right side frame 6, the left side frame 7, and the back panel 5 are connected, and the front panel 4 is connected with a structure that is easy to work with by combining the protruding member 16 and the long hole 21, and then the hoist 8 is placed over the housing 2 and fixed with the fixing screw 29, so that the housing 2 can be easily assembled and the electronic device 1 can be manufactured. That is, there is no need to move the assembled parts or change their position during assembly as in the conventional method, and each part can be assembled by stacking them one by one on the assembly plane. Furthermore, the dimension of the gap between the bottom frame 3 and the front panel 4 can be precisely set by the connecting structure using the protruding member 16 and the long hole 21, so that the first shielding material 15, which is crushed to a predetermined dimension, can provide stable shielding performance in the gap between the bottom frame 3 and the front panel 4. In addition, since the spacer member 25 allows the dimensions of the gap between the winding drum 8 and the front panel 4 to be precisely set, stable shielding performance can be obtained in the gap between the winding drum 8 and the front panel 4 by the second shielding material 22, which is compressed to a specified dimension.

[0050] In the housing 2 of the electronic device 1 of the embodiment described above, in the assembled structure of the bottom frame 3 and the front panel 4, a protrusion member 16 is provided on the bottom frame 3 and a long hole 21 is provided on the flange 20 of the front panel 4, but the opposite may be true, with a long hole 21 provided on the bottom frame 3 and a protrusion member 16 provided on the flange 20 of the front panel 4.

[0051] In the electronic device 1 of the embodiment described above, a shielding structure is provided around the front panel 4, but shielding structures can also be provided for other parts as necessary. For example, it is possible to provide an electromagnetic wave shielding structure for the members constituting the housing 2 other than the front panel 4, i.e., the gaps and connecting parts between the members of the hoist 8, the rear panel 5, the right side frame 6, and the left side frame 7, and in that case, a shielding structure similar to that around the front panel 4 described in the embodiment can also be provided. [Explanation of symbols]

[0052] 1...Electronic equipment 2... Electronic equipment housing (housing) 3…Bottom frame 4…Front panel 8…Winding drum 15…First shielding material 16...Protruding member 17...Base of protruding member 18...Head of protruding member 19... Rod portion of protruding member 20…Front panel flange 21…Long hole 22…Second shield material 25...Spacer member 29...Fixing screw as a fixing member

Claims

1. A bottom frame (3) on which electronic components are mounted; A front panel (4) connected to the front side of the bottom frame; a winding drum (8) covering the bottom frame and the front panel and connected to the bottom frame and the front panel; Equipped with The connection portion between the bottom frame and the front panel is provided with a protrusion member (16) having a height for maintaining a constant gap between the bottom frame and the front panel, and a long hole (21) into which the protrusion member is inserted, and the bottom frame and the front panel are properly assembled by inserting the protrusion member into the long hole and moving the protrusion member and the long hole relative to each other.

2. The protruding member (16) has a base portion (17) having a large outer diameter, a head portion (18) having a small outer diameter, and a rod portion (19) having a small outer diameter connecting the base portion and the head portion, The long hole (21) has a width that allows the head portion to pass therethrough, The electronic device housing (2) according to claim 1, characterized in that the distance between the bottom frame (3) and the front panel (4) is determined by the length of the base of the protrusion member by inserting the head of the protrusion member into the long hole, moving the protrusion member and the long hole relatively along the longitudinal direction of the long hole, and engaging the end of the long hole with the rod portion of the protrusion member.

3. The electronic device housing (2) according to claim 2, characterized in that a first shielding material (15) is provided in the gap between the bottom frame (3) and the front panel (4) to provide shielding between the bottom frame and the front panel.

4. The electronic device housing (2) according to claim 3, characterized in that a second shielding material (22) is provided between the front panel (4) and the winding drum (8) to provide shielding between the front panel and the winding drum.

5. A flange (20) protruding toward the rear side of the front panel (4) is provided along the outer shape of the front panel, The first shielding material (15) is sandwiched between an outer surface of the flange and an inner surface of the bottom frame (3) facing the outer surface of the flange, 5. The electronic device housing (2) according to claim 4, wherein the second shielding material (22) is sandwiched between an outer surface of the flange and an inner surface of the winding drum (8) facing the flange.

6. The winding machine includes a spacer member (25) of a predetermined height provided on the outer surface of the flange (20), and a fixing member (29) for fixing the winding drum (8) to the spacer member, The electronic device housing (2) according to claim 5, characterized in that the second shielding material (22) arranged on the outer surface of the flange is sandwiched between the reel and the flange, which are fixed to the spacer member by the fixing member.

7. A method for manufacturing an electronic device housing (2) comprising: a bottom frame (3) on which electronic components are mounted; a front panel (4) connected to a front side of the bottom frame; and a roll (8) covering the bottom frame and the front panel and connected to the bottom frame and the front panel, Place the bottom frame on an assembly plane; A first shielding material (15) is provided along the edge of the front side of the bottom frame, A second shielding material (22) is provided on the upper edge, right edge, and left edge of the front panel; At the connection portion between the bottom frame and the front panel, a protruding member (16) provided on one of the bottom frame and the front panel is inserted into a long hole (21) provided on the other of the bottom frame and the front panel, and the protruding member and the long hole are moved relative to each other to place the bottom frame and the front panel in a properly assembled state with a predetermined gap between them; A manufacturing method for an electronic device housing (2), comprising covering the bottom frame and the front panel with the drum, and connecting the bottom frame and the front panel to the drum.

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