JP5699423B2 - Panel structure of electronic equipment - Google Patents

Description

  The present invention relates to a panel structure such as a control panel in which operators provided in various electronic devices such as an electronic keyboard device such as an electronic piano and an electronic organ are arranged.

  Some electronic keyboard devices such as an electronic piano and an electronic organ are provided with a panel surface such as a control panel in which operating elements are arranged on the upper rear side of the keyboard. The panel surface is composed of a thin plate-like member that covers the upper part on the rear side of the keyboard. In the conventional keyboard device, the main components of the panel surface are wood products, synthetic resin moldings, sheet metal parts, and the like. On the other hand, recently, an extruded product such as aluminum has been used on the panel surface in order to give a high-quality appearance to the keyboard device and to increase the rigidity.

  Some of such panel surfaces are constituted by a single member as shown in Patent Document 1. That is, in the panel structure provided in the keyboard device of Patent Document 1, the control panel is configured by only one sheet metal. In this panel structure, since the panel surface is composed of only a single member, the cost of the keyboard device can be reduced. However, since the panel surface is a single member, the appearance of the panel surface is reduced. There is a limit to improving design.

  On the other hand, as shown in Patent Document 2, two plate members (front panel and rear panel) are arranged side by side in the plane direction and connected to form one panel surface (hereinafter referred to as “extended panel surface”). There is something. In the panel structure provided in the keyboard device of Patent Document 2, the front and rear panels are made of the same material (both aluminum), but the material feeling is switched between the front and rear panels by making each surface treatment different. ing. Moreover, the connection location of the front-and-back panels overlaps the ends of the front-and-back panels vertically and fastens them with screws.

JP 2008-164778 A JP 2000-112476 A

  In the panel structure described in Patent Document 2, because the edges of the front and rear panels are connected to overlap, a step is formed on the surface of the connection location, or a screw for fixing the connection location is exposed on the surface side. There was a risk that the degree of design freedom of the panel surface would be low. In addition, the fixing method in which the ends of the front and rear panels that are overlapped with each other are simply fastened with screws cannot sufficiently increase the rigidity of the connection portion of the panel surface.

  Moreover, in the panel structure of patent document 2, since the surface treatment of the front-and-back panel surface is varied, the design of the panel surface can be improved as compared with the case where it is constituted by a single member. However, since all the members constituting the front and rear panel surfaces are aluminum extrusion-molded products, there is a problem that the cost of the keyboard device increases. Also, because both panel members are aluminum extrusions, when mounting parts such as a board with operating elements mounted on the panel members, the mounting positions of the components are compared to panel members made of sheet metal or synthetic resin. In addition, there is a problem that the mounting method is likely to be limited.

  The present invention has been made in view of the above points, and has an object of ensuring a sufficient rigidity against bending and bending of an extended panel surface in which a plurality of panel surfaces are arranged and connected in a plane direction with a simple structure. An object of the present invention is to provide a panel structure of an electronic device that can enhance the designability and design flexibility of an extended panel surface.

  The present invention for solving the above-described problems is a panel structure of an electronic device, and includes a first panel surface (31) and a first panel surface (31a) on the back surface side (31a) of the first panel surface (31). 31) a first panel member (20) having a first joint surface (32) extending in a direction away from the first panel surface, a second panel surface (71), and a back surface side of the second panel surface (71) ( 71a), a second panel member (60) having a second joint surface (72) extending in a direction away from the second panel surface (71), and first and second joint surfaces (32, 72). Fixing portions (40) provided at positions away from the first and second panel surfaces (31, 71) of the first and second panel surfaces (31, 71). The fixing portion (40) includes a first joining surface (32) and a second joining surface ( 72) and a projecting piece (33) projecting from either one of them and an insertion part (33) for inserting the projecting piece (33) provided on either one of them 3), a fixing surface (74) for fixing the protruding piece (33) provided in the insertion portion (73) in a surface contact state, and a fixing tool for fixing the protruding piece (33) to the fixing surface (74) ( 41), and the protruding piece (33) inserted into the insertion portion (73) is fixed to the fixing surface (74) by the fixture (41), so that the first joining surface (32) And the second joint surface (72) are surface-joined, whereby the first panel surface (31) and the second panel surface (71) become one extended panel surface (80). .

  When panel surfaces of multiple panel members are connected side by side in the surface direction to form one continuous extended panel surface, it is perpendicular to the surface as compared to a panel surface composed of only a single panel member. It is weak to the force applied to the direction, and it is easy to bend and bend in a connection location. Then, like the panel structure concerning this invention, by fixing the protrusion piece of the 2nd or 1st joint surface inserted in the insertion part of the 1st or 2nd joint surface to the fixed surface in an insertion part in a surface contact state. By simply joining the first joint surface and the second joint surface, thereby forming one extended panel surface in which the first panel surface and the second panel surface are connected in the surface direction, the configuration is simple. Thus, the rigidity of the expansion panel surface can be effectively increased, and one expansion panel surface that is not easily bent or bent can be formed.

  The first joint surface of the present invention extends in a direction away from the first panel surface on the back surface side of the first panel surface, and the second joint surface is the second surface on the back surface side of the second panel surface. It extends in a direction away from the panel surface. Therefore, the first and second joint surfaces are not exposed on the surface side of the connection portion of the first and second panel surfaces, and it is possible to prevent a step on the surface side of the connection portion. Appearance of the extended panel surface is improved.

  Further, if the fixing structure using the fixing portion is used, the first and second panel members can be reliably connected even when the first and second panel members are made of different materials. Therefore, the material of the first and second panel surfaces can be made different by changing the material of the first and second panel members while ensuring the rigidity equal to or higher than the panel surface made of a single panel member. Can be switched, so that a high-class feeling can be given to the appearance of the electronic device. In addition, one of the first and second panel surfaces is used as a panel surface for giving a high-quality appearance, and the other is used as a panel surface for mainly fixing components such as a substrate. It is possible to use a plurality of panel surfaces properly. Therefore, it is possible to improve the mounting property of components such as a substrate and improve the assembling property of an electronic device while giving a high-class feeling to the panel surface.

  In the panel structure of the electronic device, the first panel member (20) protrudes from the back surface side (31a) of the first panel surface (31) and protrudes along the first joint surface (32). It may be an extruded member formed with (23, 26). Thus, by using an extrusion molded product such as aluminum for the first panel member, it is possible to give a high-class feeling to the appearance of the panel member. In this case, the second panel member can be a component other than the extrusion-molded product, and the materials of the first panel surface and the second panel surface can be made different. Thereby, it becomes possible to give a further high-class feeling to the appearance of the panel member. Moreover, the rigidity of the 1st panel surface which is an extrusion molded product can be improved by providing a protruding rail part in the 1st panel surface of a 1st panel member. Therefore, it is possible to prevent a shift or a step from occurring at the connection portion of the expansion panel surface connecting the first panel surface and the second panel surface.

  Further, in the panel structure of the electronic device, the second panel member (60) is provided with a protruding attachment portion (65) projecting to the back surface side (71a) of the second panel surface (71). The reinforcing member (55) includes a reinforcing member (55) that reinforces a connection portion between the first panel member (20) and the second panel member (60) from the back side, and the reinforcing member (55) is a rail of the first panel member (20). It is good to fix to both a part (23,26) and the attachment part (65) of a 2nd panel member (60). If such a reinforcing member is provided, it is possible to further increase the rigidity against bending and bending of the expansion panel surface formed by connecting the first panel surface and the second panel surface in the surface direction. In particular, even when a load in the direction of pressing the expansion panel surface is applied, it is possible to effectively prevent the expansion panel surface from being bent.

  Moreover, when providing said reinforcement member, the board | substrate member installed ranging over the back surface side (31a) of a 1st panel surface (31) and the back surface side (71a) of a 2nd panel surface (71) is further provided. It becomes possible. That is, the reinforcement by the reinforcing member described above can prevent the expansion panel surface connecting the first panel surface and the second panel surface in the surface direction from being bent, so that the plate-like substrate member is connected to the first panel surface and the first panel surface. It can be mounted across the back side of the two-panel surface. That is, it is possible to prevent an excessive force from acting on the substrate member even when an external force is applied to bend the connection portion between the first panel surface and the second panel surface. For this reason, the space on the back side of the first panel surface and the second panel surface can be effectively utilized.

  In the panel structure of the electronic device, the rail portion (23, 26) of the first panel member (20) includes a plurality of protrusions (24, 25 or 27, 28) arranged at a predetermined interval. In addition, at least one of the reinforcing member (55) and the board member (50) can be fixed to an arbitrary position in the extending direction of the protrusion (24, 25 or 27, 28). ) To the rail portion (23, 26). An example of such a fixture is a screw that is fastened while cutting a new screw groove between a pair of protrusions. According to this, a reinforcement member or a board | substrate member can be fixed to the arbitrary positions along the longitudinal direction of the rail part formed along the 1st junction surface in the back surface side of the 1st panel surface. Therefore, the freedom degree of the attachment position of the reinforcement member or the board | substrate member with respect to a panel member improves.

In the panel structure of the electronic device, the first and second panel surfaces (31, 71) provided at at least one end of the first and second joint surfaces (32, 72) are separated from each other. A protrusion-shaped positioning portion (75) that protrudes and a fitting portion (51) provided on the substrate member (50), and the substrate member (50) is the back surface of the first and second panel surfaces (31, 71). When attaching to the side (31a, 71a), the positioning of the board member (50) may be performed by fitting the positioning part (75) to the fitting part (51) of the board member (50). . According to this, it becomes possible to easily and accurately perform the positioning of the board member attached to the back side of the first and second panel surfaces, and the assemblability of the electronic device can be improved.
In addition, the code | symbol in said parenthesis has shown the code | symbol of the corresponding component of embodiment mentioned later as an example of this invention.

  According to the panel structure of an electronic device according to the present invention, it is possible to secure sufficient rigidity against bending and bending of an extended panel surface in which a plurality of panel surfaces are arranged and connected in the surface direction, and to improve designability and design flexibility. it can.

It is a perspective view showing the example of whole composition of an electronic keyboard musical instrument provided with the panel structure concerning one embodiment of the present invention. It is a schematic sectional side view which shows the front panel member and rear panel member of an electronic keyboard musical instrument. It is a figure which shows a front panel member and a rear panel member, (a) is a rear view of a front panel member, (b) is a front view of a rear panel member, (c) is a rear view of a rear panel member, (d ) Is an enlarged view of part C of (b). It is a figure which shows the state which connected the front panel member and the rear panel member, (a) is a sectional side view of a front panel member and a rear panel member, (b) is a back surface of a part of front panel member and a rear panel member It is the figure seen from the side. It is a figure which shows the detailed structure of a fixing | fixed part, and is A partial enlarged view of Fig.4 (a). It is a figure which shows the state which attached the reinforcement member to the back surface side of a front panel member and a rear panel member, (a) is a sectional side view of a front panel member and a rear panel member, (b) is a front panel member and a rear panel. It is the figure which looked at a part of member from the back side. It is a figure which shows the state which attached the circuit board to the back surface side of a front panel member and a rear panel member, (a) is a sectional side view of a front panel member and a rear panel member, (b) is a front panel member and a rear panel. It is the figure which looked at a part of member from the back side. It is a figure which shows the detailed structure of a positioning piece, and is the B partial enlarged view of FIG.7 (b).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing the overall configuration of an electronic keyboard instrument (electronic device) having a panel structure according to an embodiment of the present invention. The electronic keyboard instrument 1 shown in FIG. 1 includes a keyboard 10 in which a plurality of keys 11 (white keys 11a and black keys 11b) are arranged. Further, as a housing structure that accommodates the keyboard 10 and forms the exterior of the electronic keyboard instrument 1, the upper case 2 that covers the upper part of the rear side of the keyboard 10, the lower case 3 that covers the lower surface side of the keyboard 10, Side plates 4 and 4 are provided to cover both side surfaces. Note that the time signatures 5 and 5 are provided outside the both ends of the keyboard 10. The upper case 2 and the lower case 3 are made of a substantially plate-like member that extends along the arrangement direction of the keys 11. The upper case 2 is a member to which the panel structure according to the present invention is applied, and a front panel member (first panel member) 20 disposed on the front side in a plane (horizontal plane) at the upper rear side of the keyboard 10 and The rear panel member (second panel member) 60 disposed on the back side is composed of two parts. In the following description, the horizontal direction indicates the arrangement direction of the keys 11 in the electronic keyboard instrument 1, and the front and rear direction or the front side and the rear side indicate the longitudinal direction of each key 11.

  FIG. 2 is a schematic sectional side view showing the front panel member 20 and the rear panel member 60. 3 is a view showing the front panel member 20 and the rear panel member 60. FIG. 3A is a rear view of the front panel member 20, FIG. 3B is a front view of the rear panel member 60, and FIG. The rear view of the rear panel member 60, (d) is a C partial enlarged view of (b). The front panel member 20 is an aluminum extrusion-molded product, and has an upper wall 21 arranged in a substantially horizontal plane so as to cover the upper surface side of the rear end portion 10 a of the keyboard 10, and a lower side from the front end side of the upper wall 21. And a front wall 22 erected above the rear end portion 10a of the keyboard 10 and has a substantially L-shaped cross section. The upper surface of the upper wall 21 is a substantially horizontal front panel surface (first panel surface) 31. On the other hand, a linear first rail portion 23 and a second rail portion 26 extending in the arrangement direction of the keys 11 are formed on the back surface side 21 a of the upper wall 21. The first rail portion 23 has two protrusions 24 and 25 parallel to each other at a predetermined interval formed at a position along the front end side 21e of the upper wall 21 (position immediately after the front wall 22). The two rail portions 26 have two ridges 27 and 28 that are formed at positions along the rear end side 21f of the upper wall 21 and are parallel to each other at a predetermined interval. The protrusions 24, 25, 27, and 28 of the first rail portion 23 and the second rail portion 26 have substantially the same projecting dimensions from the upper wall 21 to the back surface side 21 a, and are more than half of the front wall 22. Is a slightly smaller protruding dimension.

  The outer surface of the outer ridge 28 of the second rail portion 26 is a bonding surface (first bonding surface) 32 for connecting the front panel member 20 to the rear panel member 60. The joint surface 32 extends in a direction substantially orthogonal to the front panel surface 31 on the back surface side 21a of the front panel surface 31 (upper wall 21). Further, the joint surface 32 extends in the arrangement direction of the key 11 along the protrusion 28. And the protrusion piece 33 which protrudes substantially horizontal toward back from the joint surface 32 is formed. The projecting piece 33 is provided at a position away from the front panel surface 31 on the joint surface 32, and is formed of a substantially rectangular small tongue piece whose surface is arranged in parallel with the front panel surface 31. A plurality of protruding pieces 33 are provided at predetermined intervals along the longitudinal direction of the joining surface 32 (see FIG. 3A). Each protruding piece 33 is formed with a screw hole 33 a for fixing a fixing screw (fixing tool) 41.

  The upper wall 21 of the front panel member 20 is formed with an opening 21c for installing various operation switches and volume controls 6 (see FIG. 1) 6 used for operating the electronic keyboard instrument 1. Yes. The operation element 6 is mounted on a circuit board 50 (see FIGS. 7A and 7B) attached to the back side 21 a of the upper wall 21, and the front panel surface 31 from the opening 21 c of the upper wall 21. To be exposed.

  On the other hand, the rear panel member 60 is a plate-like member formed by appropriately bending an iron sheet metal, and has a substantially horizontal upper wall 61 continuous with the rear end side 21f of the upper wall 21 of the front panel member 20, And a rear wall 62 that extends downward from the rear end side of the upper wall 61 and covers the rear side of the electronic keyboard instrument 1, and has a cross-sectional shape that is substantially L-shaped laterally symmetrical with respect to the front panel member 20. Is formed. The upper surface of the upper wall 61 is a substantially horizontal rear panel surface (second panel surface) 71. Further, a bent wall 63 that is bent substantially perpendicularly toward the back surface side 71a is connected to the front end side 71e of the upper wall 61. The outer surface (front surface) of the bent wall 63 is a bonding surface (second bonding surface) 72 for connecting the rear panel member 60 to the front panel member 20. The joint surface 72 extends in a direction substantially orthogonal to the rear panel surface 71 on the back surface side 71 a of the rear panel surface 71. Further, the joint surface 72 extends in the arrangement direction of the keys 11 that is the extending direction of the upper wall 61. The joining surface 72 has an insertion portion 73 formed of a substantially rectangular opening. The insertion portion 73 is a slit-like opening for inserting the protruding piece 33 of the front panel member 20, and a plurality of insertion portions 73 are provided at positions corresponding to the protruding piece 33 along the longitudinal direction of the joint surface 72.

  Further, a lower wall 64 bent at a substantially right angle toward the rear side is connected to the lower end side of the bent wall 63. The lower wall 64 extends along the lower end side of the bent wall 63 in a substantially horizontal direction whose surface is parallel to the upper wall 61. The upper surface of the lower wall 64 at a position corresponding to the insertion portion 73 is a fixing surface 74 for fixing the protruding piece 33 inserted into the insertion portion 73 in a surface contact state. An insertion hole 74 a for inserting the fixing screw 41 is formed in the fixed surface 74. The protruding piece 33 protruding from the bonding surface 32 of the front panel member 20, the insertion portion 73 provided on the bonding surface 72 of the rear panel member 60, and the protruding piece 33 provided in the insertion portion 73 are in surface contact. The front and rear panel members 20 and 60 are integrally fixed by surface-bonding the joint surface 32 and the joint surface 72 with a fixing surface 74 for fixing and a fixing screw 41 for tightly fixing the protruding piece 33 to the fixing surface 74. A fixed portion 40 is configured.

  In addition, a protruding positioning portion 75 that protrudes downward beyond the lower wall 64 is formed on the lower end side of the bent wall 63. The positioning portion 75 is a small rectangular piece that protrudes downward from its lower end in the same plane as the bonding surface 72 (bending wall 63). That is, the positioning portion 75 protrudes in a direction (downward) away from the rear panel surface 71 at the lower end of the joint surface 72. A plurality of positioning portions 75 are formed at predetermined intervals along the longitudinal direction of the bent wall 63.

  A small protrusion-shaped tap (attachment portion) 65 is installed on the back surface side 61 a of the upper wall 61. The tap 65 is a substantially cylindrical small member having a screw hole (not shown) formed in the center of its lower end surface, and a plurality of taps 65 are fixed to appropriate positions on the back surface side 61a of the upper wall 61 by welding or the like. . The tap 65 is used for attaching a circuit board 50 and a reinforcing member 55 described later.

  Next, a procedure for connecting the front panel member 20 and the rear panel member 60 configured as described above will be described. 4A and 4B are views showing a state in which the front panel member 20 and the rear panel member 60 are connected. FIG. 4A is a side sectional view of the front panel member 20 and the rear panel member 60, and FIG. It is the figure which looked at a part of rear panel member 60 from the back side. FIG. 5 is a diagram showing a detailed configuration of the fixing portion 40, and is an enlarged view of a portion A in FIG. In order to connect the front panel member 20 and the rear panel member 60, as shown in FIG. 2, the front panel member 20 and the rear panel member 60 are arranged so that the front panel surface 31 and the rear panel surface 71 are parallel at the same height. Are arranged side by side, and in this state, as shown in FIG. 4A, the joining surface 32 of the front panel member 20 and the joining surface 72 of the rear panel member 60 are brought into contact with each other. At this time, the protruding piece 33 is inserted into the insertion portion 73 by matching the position of the protruding piece 33 of the front panel member 20 with the position of the insertion portion 73 of the rear panel member 60. As a result, the protruding piece 33 is disposed directly above the fixing surface 74 (the upper surface of the lower wall 64) in the insertion portion 73. In this state, as shown in FIG. 5, the fixing screw 41 inserted into the insertion hole 74 a from the back surface side of the lower wall 64 is fastened to the screw hole 33 a of the protruding piece 33. As a result, the protruding piece 33 is fixed to the fixed surface 74 in a surface contact state, so that the bonding surface 32 and the bonding surface 72 are surface bonded (bonded in a surface contact state). In this way, as shown in FIG. 4B, one continuous extended panel surface 80 in which the front panel surface 31 and the rear panel surface 71 are connected in the surface direction is formed.

  Thus, in the panel structure of the electronic keyboard instrument of this embodiment, the protruding piece 33 of the front panel member 20 inserted into the insertion portion 73 of the rear panel member 60 is fixed to the fixing surface 74 in the insertion portion 73 in a surface contact state. By doing so, the joining surface 32 and the joining surface 72 are surface-joined, thereby forming one extended panel surface 80 in which the front panel surface 31 and the rear panel surface 71 are connected side by side in the surface direction. Therefore, the rigidity of the expansion panel surface 80 can be effectively increased with a simple configuration, and the one expansion panel surface 80 which is not easily bent or bent can be formed.

  Further, if the above-described fixing structure is used, the first panel can be used even when the front panel member 20 and the rear panel member 60 are made of different materials (aluminum extrusion molding member and iron sheet metal member) as in the present embodiment. It becomes possible to connect the member 20 and the 2nd panel member 60 reliably. Therefore, the first panel member 20 and the second panel member 60 are made of different materials while ensuring rigidity equal to or higher than that of a conventional panel surface made of a single panel member, so that the front panel surface 31 and the rear panel surface 31 are different from each other. Since the material can be switched at the connection point with the panel surface 71, the appearance of the electronic keyboard instrument 1 can be given a high-class feeling.

  Moreover, in the panel structure of this embodiment, the front panel surface 31 provided in the aluminum extrusion-molded product of the front panel surface 31 and the rear panel surface 71 is the appearance of the electronic keyboard instrument 1 (the appearance of the expansion panel surface 80). The other rear panel surface 71 provided on the iron sheet metal is used as a panel surface for mainly fixing various components such as the circuit board 50. Thereby, the several panel surface from which a material differs is used properly. Therefore, it is possible to improve the attachment of components such as the circuit board 50 and improve the assemblability of the electronic keyboard device 1 while giving the appearance of the extended panel surface 80 a high-class feeling.

  Moreover, since the panel structure of this embodiment is a structure which connects two types of members, the 1st panel member 20 and the 2nd panel member 60 which consist of a mutually different material as mentioned above, these 1st panel members 20 and By replacing any of the second panel members 60 with another panel member (not shown), a combination of the first panel member 20 and the other panel member, or the second panel member 60 and the other panel member. Combinations of panel members are also possible. The other panel member prepared here may be made of the same material as either the first panel member 20 or the second panel member 60, or both the first panel member 20 and the second panel member 60 may be used. It may be of a different material. If comprised in this way, it will become possible to give many variations to the panel structure of an electronic keyboard instrument, suppressing the kind of components to prepare.

Further, in the panel structure of the present embodiment, the front panel member 20 is formed with the first rail portion 23 and the second rail portion 26 that protrude from the back surface 21 a of the front panel surface 31 and extend along the joint surface 32. It is an extruded aluminum member. As described above, by using an aluminum extrusion-molded product for the front panel member 20, it is possible to give a high-class feeling to the appearance of the expansion panel surface 80. In the present embodiment, the rear panel member 60 is an iron sheet metal member, and the front panel surface 31 and the rear panel surface 71 are made of different materials. Thereby, it becomes possible to improve the design of the external appearance of the expansion panel surface 80. Further, by providing the protruding rail portions 23 and 26 on the rear surface side 21a of the front panel surface 31, the rigidity of the front panel member 20 that is an extruded product can be increased. Moreover, it can also suppress that the expansion panel surface 80 which arranged the front panel surface 31 and the rear panel surface 71 side by side in the surface direction, and a bending and a bending generate | occur | produce here.

  FIG. 6 is a view showing a state in which the reinforcing member 55 is attached to the back surface side 31 a of the front panel surface 31 and the back surface side 71 a of the rear panel surface 71, and (a) is a front view seen from the side of the reinforcing member 55. The side sectional view of the panel member 20 and the rear panel member 60, (b) is a back view showing a part of the front panel member 20 and the rear panel member 60. The panel structure of the electronic keyboard instrument 1 of the present embodiment is such that the rear panel surface from the back surface side 31a of the front panel surface 31 is further connected to the front and rear panel members 20 and 60 that are integrally connected by the fixing structure of the fixing portion 40 described above. The reinforcing member 55 is provided across the back surface 71 a of the 71. Hereinafter, a configuration of the reinforcing member 55 and a procedure for attaching the reinforcing member 55 to the front and rear panel members 20 and 60 will be described.

  As shown in FIG. 6A, the reinforcing member 55 is a plate-like member formed by bending an iron sheet metal, and is substantially rectangular from the strip-shaped upper fixing piece 56 and one end side of the upper fixing piece 56. A flat plate-like standing wall portion 57 that is bent downward and extends downward on the lower surface side, and a small piece-like lower fixing piece 57a that is bent in a transverse direction perpendicular to the lower end of the standing wall portion 57. The standing wall portion 57 is a flat plate-like portion that is bent from the side of the upper fixing piece 56 and extends to the back surface side of the upper fixing piece 56, and the lower end thereof is lower than the lower end of the rear wall 62 of the rear panel member 60. It is formed so that it may extend | stretch. At an appropriate position of the upper fixing piece 56, an insertion hole 91 a for inserting a fixing screw (rail fixture) 58 fixed to the first and second rail portions 23 and 26 and a fixing fixed to the tap 65. A plurality of insertion holes 91b for inserting the screws 59 are formed.

  In order to attach the reinforcing member 55 having the above configuration to the back surface side 31a of the front panel surface 31 and the back surface side 71a of the rear panel surface 71, as shown in FIGS. 6 (a) and 6 (b), the upper fixing of the reinforcing member 55 is performed. The piece 56 is installed so as to be in a bridging state between the first and second rail portions 23 and 26 on the back surface side 31 a of the front panel surface 31 and the tap 65 on the back surface side 71 a of the rear panel surface 71. In this state, the fixing screw 59 inserted through the insertion hole 56 b of the upper fixing piece 56 is fastened to the screw hole of the tap 65. Thereafter, the fixing screw 58 inserted into the insertion hole 56 a of the upper fixing piece 56 is fastened between the protrusions 24 and 25 of the first rail portion 23 and between the protrusions 27 and 28 of the second rail portion 26. This fastening is performed while cutting a new screw groove on the side surface of the protrusions 24 and 25 or the protrusions 27 and 28 with the fixing screw 58.

  Thus, the upper fixing piece 56 of the reinforcing member 55 is attached across the back surface side 31 a of the front panel surface 31 and the back surface side 71 a of the rear panel surface 71. Further, as shown in FIG. 6A, the standing wall portion 57 of the reinforcing member 55 extends in a direction away from the front and rear panel surfaces 31 and 71 (directly downward direction). By providing such a reinforcing member 55, it is possible to effectively increase the rigidity against bending and bending of the expansion panel surface 80 in which the front panel surface 31 and the rear panel surface 71 are arranged and connected in the surface direction. The reinforcing member 55 is dimensioned so that the lower fixing piece 57a abuts against the bottom plate 3a of the lower case 3 as shown in FIG. 6A in a state where the front and rear panel members 20 and 60 are attached to the electronic keyboard instrument 1. The shape is set. The lower fixing piece 57a is fixed to the bottom plate 3a by fastening a fixing screw 92 inserted through the bottom plate 3a from its lower surface side into a screw hole 91c of the lower fixing piece 57a. Thereby, since the connection location of the front panel surface 31 and the rear panel surface 71 is supported from the lower side by the reinforcement member 55, the expansion panel surface 80 becomes more difficult to bend. Moreover, even when a load is applied from the surface side to the connection portion between the front panel surface 31 and the rear panel surface 71 by supporting the connection portion between the front panel surface 31 and the rear panel surface 71 by the reinforcing member 55, The connection portion is not easily bent.

  FIG. 7 is a view showing a state in which the circuit board 50 is attached to the back surface side 31a of the front panel surface 31 and the back surface side 71a of the rear panel surface 71. FIG. 7A illustrates the front panel member 20 including the circuit board 50 and The side sectional view of the rear panel member 60, (b) is a view of a part of the front panel member 20 and the rear panel member 60 viewed from the back side. The panel structure of the electronic keyboard instrument 1 of the present embodiment is such that the reinforcing member 55 is attached to the front panel member 20 and the rear panel member 60, and the back side 31 a of the front panel surface 31 and the rear panel surface 71 are further A circuit board (board member) 50 is installed at a position straddling the back surface side 71a. Hereinafter, the configuration of the circuit board 50 and the procedure for attaching the circuit board 50 to the front and rear panel members 20 and 60 will be described.

  The circuit board 50 is a flat hard board, and at an appropriate position, the circuit board 50 has an insertion hole 50a for inserting a fixing screw (rail fixture) 53 fixed to the first and second rail portions 23 and 26. A plurality of insertion holes 50b for inserting the fixed screws 54 fixed to the tap 65 are formed. Further, the circuit board 50 is provided with a fitting portion 51 for fitting a positioning portion 75 provided at the lower end of the bent wall 63 of the rear panel member 60. The fitting portion 51 includes a fitting portion 51 a formed as an opening having a size and shape corresponding to the positioning portion 75 or a fitting portion 51 b formed as a recess (cutting of the end side). On the circuit board 50, various operation switches 6 such as various operation switches and volumes for use in the operation of the electronic keyboard instrument 1 are mounted. As described above, the operation element 6 has the circuit board 50 attached to the back surface side 31a of the front panel surface 31 and the back surface side 71a of the rear panel surface 71 from the opening 21c of the upper wall 21. The panel surface 31 is exposed.

  In order to attach the circuit board 50 having the above configuration to the front panel member 20 and the rear panel member 60, first, the circuit board 50 is attached to the back surface side 31a of the front panel surface 31 as shown in FIGS. Between the first and second rail portions 23 and 26 and the tap 65 on the rear surface 71a of the rear panel surface 71 in a bridging state. At this time, the circuit board 50 is positioned with respect to the front and rear panel surfaces 31 and 71 (front and rear and left and right positioning) by the positioning portion 75 of the rear panel member 60. FIG. 8 is a diagram showing a detailed configuration of the positioning portion 75 and the fitting portion 51 (51b), and is an enlarged view of a portion B in FIG. 7B. When the circuit board 50 is installed between the back surface side 31a of the front panel surface 31 and the back surface side 71a of the rear panel surface 71, as shown in the figure, the fitting portion 51 (51a or 51b) of the circuit board 50 A positioning portion 75 of the rear panel member 60 is inserted into and fitted into the rear panel member 60. Thereby, since the circuit board 50 attached to the back side 31a of the front panel surface 31 and the back side 71a of the rear panel surface 71 can be positioned easily and accurately, the assembling property of the electronic keyboard instrument 1 can be improved. it can.

  In this state, the fixing screw 54 inserted through the insertion hole 50 b of the circuit board 50 is fastened to the screw hole of the tap 65. Thereafter, the fixing screw 53 inserted into the insertion hole 50 a of the circuit board 50 is fastened between the protrusions 24 and 25 of the first rail portion 23 and between the protrusions 27 and 28 of the second rail portion 26. This fastening is performed while cutting a new screw groove between the pair of protrusions 24, 25 or 27, 28 with the fixing screws 53, 58. Further, in this way, the circuit board 50 is attached in parallel to the back surface side 31 a of the front panel surface 31 and the back surface side 71 a of the rear panel surface 71.

  As described above, when the reinforcing member 55 is provided, it is possible to install the circuit board 50 extending from the rear surface side 31 a of the front panel surface 31 to the rear surface side 71 a of the rear panel surface 71. That is, since the expansion panel surface 80 in which the front panel surface 31 and the rear panel surface 71 are arranged and connected in the surface direction can be prevented from being bent by the reinforcement by the reinforcing member 55, a flat component such as the circuit board 50 is attached to the front panel surface. 31 and the rear panel surface 71 can be attached. That is, it is possible to prevent an excessive force from acting on the circuit board 50 even if an external force is applied to bend the connection portion between the front panel surface 31 and the rear panel surface 71. For this reason, the space between the back side 31a of the front panel surface 31 and the back side 71a of the rear panel surface 71 can be effectively utilized.

  In addition, the circuit board 50 and the reinforcing member 55 are fixed to the first and second rail portions 23 and 26 of the front panel member 20 between the ridges 24 and 25 and the ridges 27 and 28. It is fixed at 58. Since these fixing screws 53 and 58 are fastened while cutting a new screw groove between the pair of protrusions 24, 25 or 27, 28, they can be fixed at arbitrary positions of the first and second rail portions 23, 26. Is possible. Therefore, the circuit board 50 or the reinforcing member 55 can be fixed at any position along the longitudinal direction of the first and second rail portions 23 and 26 according to the position of the tap 65 provided on the rear panel member 60. Therefore, the degree of freedom of attaching the circuit board 50 or the reinforcing member 55 to the front and rear panel members 20 and 60 is improved. In addition, since it is not necessary to perform exact positioning in fixing the fixing screws 53 and 58, when attaching the circuit board 50 or the reinforcing member 55 to the front and rear panel members 20 and 60, the fixing screws 54 and 59 are fixed to the tap 65 first. Then, since the fixing screws 53 and 58 can be fixed to the first and second rail portions 23 and 26 in positions corresponding thereto, the mounting work of the circuit board 50 or the reinforcing member 55 can be easily performed. The assembly efficiency of the electronic keyboard instrument 1 is improved.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited.

  For example, the electronic device to which the panel structure according to the present invention is applied is not limited to the electronic keyboard instrument shown in the above embodiment, and may be another electronic device. In the above embodiment, the protruding piece 33 is provided on the front panel member 20 side, and the insertion portion 73 and the fixing surface 74 are provided on the rear panel member 60 side. May be provided on the rear panel member 60 side, and the insertion portion 73 and the fixing surface 74 may be provided on the front panel member 20 side.

  Moreover, although the case where the positioning part 75 for positioning the circuit board 50 was provided in the rear panel member 60 was shown in the said embodiment, the positioning part 75 can also be provided in the front panel member 20. FIG. However, in the case where the rear panel member 60 is an iron sheet metal member as in the present embodiment, it is desirable to provide the positioning portion 75 on the rear panel member 60 because of the ease of forming the protruding pieces. Moreover, the fixing tool for fixing the protruding piece provided in the fixing portion of the present invention to the fixing surface may be a fixing tool other than the screw shown in the embodiment. Examples of the fixing tool other than the screw include a rivet.

DESCRIPTION OF SYMBOLS 1 Electronic keyboard instrument 2 Upper case 3 Lower case 4, 4 Side plate 6 Operator 10 Keyboard 10a Rear end part 11 Key 20 Front panel member (1st panel member)
21 upper wall 22 front wall 23 1st rail part 24,25 ridge 26 2nd rail part 27,28 ridge 31 front panel surface 31a back side 32 joint surface (first joint surface)
33 protruding piece 40 fixing part 41 fixing screw (fixing tool)
50 Circuit board 53 Fixing screw (Rail fixing tool)
55 Reinforcing member 58 Fixing screw (Rail fixing tool)
60 Rear panel member (second panel member)
61 Upper wall 61a Back side 62 Rear wall 63 Bending wall 64 Lower wall 65 Tap (attachment part)
71 Rear panel surface 71a Back side 72 Bonding surface (second bonding surface)
73 Insertion part 74 Fixing surface 75 Positioning part 80 Expansion panel surface

Claims (7)

A panel structure of an electronic device,
A first panel member having a first panel surface and a first joint surface extending in a direction away from the first panel surface from the edge of the first panel surface toward the back surface;
A second panel member having a second panel surface and a second bonding surface extending in a direction away from the second panel surface from the edge of the second panel surface toward the back surface;
A fixing portion provided at a position away from the first and second panel surfaces of the first and second joining surfaces,
The fixing portion includes a protruding piece protruding from one of the first bonding surface and the second bonding surface, an insertion portion for inserting the protruding piece provided on the other, and the insertion portion provided in the insertion portion. A fixing surface for fixing the protruding piece in a surface contact state, and a fixing tool for fixing the protruding piece to the fixing surface,
The protruding piece inserted into the insertion portion is fixed to the fixing surface by the fixing tool, so that the first bonding surface and the second bonding surface are surface-bonded, thereby the first panel surface. The end side of the second panel surface and the end side of the second panel surface are continuous to form one extended panel surface in which the first panel surface and the second panel surface are connected side by side in the surface direction. Panel structure of electronic equipment. The first joint surface extends in a direction orthogonal to the first panel surface,
The second joint surface extends in a direction orthogonal to the second panel surface,
The protruding piece has a surface arranged in parallel with the first panel surface,
The panel structure of the electronic device according to claim 1, wherein the fixed surface is disposed in parallel with the second panel surface. The said 1st panel member is an extrusion molding member by which the projection-shaped rail part which protrudes in the back surface side of the said 1st panel surface and followed the said 1st joint surface was formed. Panel structure of the electronic device described. The second panel member is provided with a protrusion-like attachment that protrudes to the back side of the second panel surface,
A reinforcing member that reinforces the connection portion between the first panel member and the second panel member from the back side;
The panel structure of the electronic device according to claim 3 , wherein the reinforcing member is fixed to both the rail portion of the first panel member and the attachment portion of the second panel member. The panel structure of the electronic device according to claim 4, further comprising a substrate member installed across the back side of the first panel surface and the back side of the second panel surface. The rail portion of the first panel member includes a plurality of protrusions arranged at a predetermined interval,
6. The rail member according to claim 5 , wherein at least one of the reinforcing member and the substrate member is fixed to the rail portion by a rail fixture that can be fixed at an arbitrary position in the extending direction of the protrusion. Panel structure of the electronic device described. A protrusion-shaped positioning portion projecting in a direction away from the first and second panel surfaces provided at at least one end of the first and second joining surfaces, and a fitting portion provided on the substrate member; With
When the board member is attached to the back side of the first and second panel surfaces, the board member is positioned by fitting the positioning part to the fitting part of the board member. The panel structure of the electronic device according to claim 5, wherein the panel structure is an electronic device.

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