JP2006350056A - Exterior case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior case in which a gap between a top plate and a side plate does not appear outside, and the top plate can be removed and firmly attached.
SOLUTION: A fixing member 15 having a substantially wedge-shaped locking recess 16 attached to a position located on the lower surface of both sides of the lower surface of the top plate 8 on the inner surface of the pair of side plates 6; An engagement member 18 having a substantially wedge-shaped fitting portion 19 which is attached and slidably engages with the locking recess 16 of the fixing member 15, and both side ends of the top plate 8 attached to the upper portions of the pair of side plates 6. And a blindfold member 20 having a decorative part 21 for guiding the part. Therefore, when the top plate 8 is slid and attached to the upper part of the pair of side plates 6, the engagement members 17 of the top plate 8 are fitted while guiding both side ends of the top plate 8 by the decorative portion 21 of the blindfold member 20. The joint portion 18 can be reliably fitted to the locking recess 16 of the fixing member 15 in a surface contact state, and the gap between the top plate 8 and the side plate 6 can be hidden by the decorative portion 21 of the blindfold member 20.
[Selection] Figure 10

Description

  The present invention relates to an exterior case used for a keyboard instrument or furniture.

  In general, an instrument case which is an exterior case such as an electronic piano has a bottom plate, a lower front plate attached to the front portion of the bottom plate, a pair of side plates attached to the left and right sides of the bottom plate, and a pair of side plates. It has a back plate attached to the rear and a top plate attached to the upper part of the pair of side plates, and various parts necessary for an electronic piano such as a keyboard device are incorporated inside the enclosure. Has been.

In such a musical instrument case, it is necessary to detachably attach the top plate so that the mounting screw and its blind cap do not appear on the surface of the top plate or the side plate. In response to such a demand, in the conventional musical instrument case, as described in Patent Document 1, on both sides of the front portion of the lower surface of the top plate, a hook shape having engagement recesses opened toward the rear portion side. A fixing member is provided, and the engaging recess of the fixing member is engaged with each pin provided on each inner surface of the pair of side plates, and the back plate is screwed to the splint provided on the rear surface of the lower surface of the top plate. There is something configured to do.
ACT 6-47992

  However, in such a conventional musical instrument case, the fixing member attached to the top plate can be attached even if the top plate can be removably attached without the mounting screw or its blindfold cap appearing on the surface of the top plate or the side plate. The locking recess is formed in a substantially V-shape opened toward the rear side, and the locking recess of the fixing member is engaged with the pin provided on the side plate. Since it engages in a point contact state, stress concentrates on the part which a pin and a latching recessed part mutually contact. For this reason, high intensity | strength is requested | required of a pin and a latching recessed part, and there exists a problem that sufficient intensity | strength cannot be ensured unless a pin and a latching recessed part are formed large.

  Further, in such a conventional musical instrument case, when the top plate is sandwiched and attached between the upper portions of the pair of side plates, a gap may be formed between the top plate and the side plate, and the design may be impaired. In particular, it is necessary to remove the top plate easily during repairs and maintenance inspections. Even if there is no gap between the top plate and the side plate during assembly, the top plate and the side plate are deformed due to secular change. When reassembling during repairs or maintenance inspections, there is a risk that a gap will be formed between the top plate and the side plate.

The first problem to be solved by the present invention is that stress concentration is prevented by surface contact, and sufficient strength can be secured even if the fixing member and the engaging member are compactly formed, and thereby the top plate can be removed. It is providing the exterior case which can be firmly attached to.
Moreover, the 2nd subject of this invention is providing the exterior case which the space | interval between a top plate and a side plate does not appear outside but can attach to a top plate firmly so that removal is possible.

In order to solve the above problems, the present invention includes the following components.
In addition, the reference numerals of the drawings attached to the respective elements described in the section of each embodiment described later are attached to the respective constituent elements together with parentheses.

As shown in FIGS. 1 to 13, the invention described in claim 1 includes a pair of left and right side plates (6), a back plate (7) attached to the rear part of the pair of side plates, and the pair of side plates. In an outer case (instrument case 1) having a top plate (8) attached to the upper part,
A fixing member (15, 30) having a substantially wedge-shaped locking recess (16, 31) and a substantially wedge-shaped fitting portion (19, 33) slidably fitted in the locking recess of the fixing member Engaging members (18, 32) having
One of the fixing member and the engaging member is attached to each of the inner surfaces of the pair of side plates facing each other on the lower side of the lower surface of the top plate, and the other of the fixing member and the engaging member Are attached to both sides of the lower surface of the top plate.

The invention according to claim 2 includes a pair of left and right side plates (6), a back plate (7) attached to the rear portion of the pair of side plates, and the pair of side plates, as shown in FIGS. In an outer case (instrument case 1) having a top plate (8) attached to the upper part,
A fixing member (15, 30) having a substantially wedge-shaped locking recess (16, 31) and a substantially wedge-shaped fitting portion (19, 33) slidably fitted in the locking recess of the fixing member An engaging member (18, 32) having a blindfold member (20) having a decorative portion (21) for guiding both side ends of the top plate,
One of the fixing member and the engaging member is attached to each of the inner surfaces of the pair of side plates facing each other on the lower side of the lower surface of the top plate, and the other of the fixing member and the engaging member Are attached to both sides of the lower surface of the top plate, and the blindfold members are respectively attached to the upper portions of the pair of side plates.

  As shown in FIGS. 1 to 10, the fixing member (15) attached to the inner surfaces of the pair of side plates facing each other bends the metal plate into a substantially U-shaped cross section. The locking recess (16) is formed, the upper side (16a) of the locking recess is formed substantially horizontally, and the lower side (16b) is inclined obliquely downward from the front side toward the rear side. The engaging member (18) formed and attached to the lower surface of the top plate has the fitting portion (19) bent substantially vertically downward on one side of a metal plate, and the lower side portion ( 19b) is formed so as to be inclined obliquely downward from the front side to the rear side at the same inclination as the lower side part of the locking recess of the fixing member. It is an exterior case.

  As shown in FIGS. 11 to 13, the fixing member (30) attached to the lower surface of the top plate (8) is substantially U-shaped in cross section on one side of the metal plate. The locking recess (31) is formed, the upper side (31a) of the locking recess is formed in parallel to the lower surface of the top plate, and the lower side (31b) is inclined from the front side toward the rear side. The engaging member (32) formed to be inclined upward and attached to the inner surfaces facing each other of the pair of side plates (6) is bent horizontally in the upper side of the metal plate. The fitting portion (33) is bent substantially vertically downward at the front end portion, and the lower side portion (33b) of the fitting portion is inclined at the same inclination as the lower side portion in the locking recess of the fixing member from the front side to the rear side. It is characterized by being inclined obliquely upward toward the side Is the outer case according to claim 1 or 2

  As shown in FIGS. 1 to 10, the invention according to claim 5 is a counterbore portion in which the fixing member (15) is inserted and attached to the inner surfaces of the pair of side plates (6) facing each other. Counterbore grooves 14) are provided from the mounting position of the fixing member to the rear end surface, and the fitting portion (19) of the engaging member (18) is located on both sides of the lower surface of the top plate (8). When the top plate is slid and attached to the upper part of the pair of side plates, the inside of the counterbore portion is slid into the locking recess (16) of the fixing member. The outer case according to any one of claims 1 to 3, wherein the outer case is fitted.

According to a sixth aspect of the present invention, as shown in FIGS. 11 to 13, a counterbore portion in which the engagement member (32) is inserted and attached to each inner surface of the pair of side plates (6) facing each other. (34) is provided from the attachment position of the engagement member to the rear end surface,
The locking recess (31) of the fixing member (30) protrudes laterally from both sides of the lower surface of the top plate (8) and is inserted into the counterbore, and the top plate is placed on top of the pair of side plates. The exterior according to any one of claims 1, 2, and 4, wherein the fitting portion (33) of the engagement member is fitted by sliding in the counterbore portion when being slid and attached. Case.

  According to the first aspect of the present invention, a fixing member having a substantially wedge-shaped engaging recess and an engaging member having a substantially wedge-shaped engaging portion slidably fitted in the engaging recess of the fixing member. And attaching one of the fixing member and the engaging member to each of the inner surfaces of the pair of side plates facing each other on the lower side of the lower surface of the top plate, and attaching the other of the fixing member and the engaging member to the top. When the top plate is slid and attached to the upper part of the pair of side plates, from the wide portion of the substantially wedge-shaped locking recess of the fixing member, the engagement member is substantially wedge-shaped. Since the tapered portion of the fitting portion is inserted, the fitting portion can be smoothly slid and inserted into the locking recess, and the locking recess and the fitting portion are securely fitted in a surface contact state. Can do. For this reason, since concentration of stress can be prevented in a part of the locking recess and the fitting portion, sufficient strength can be secured even if the fixing member and the engaging member are compactly formed. Thus, the top plate can be detachably and firmly attached to the upper part of the pair of side plates.

  According to the second aspect of the present invention, the fixing member having a substantially wedge-shaped engaging recess and the engaging member having a substantially wedge-shaped engaging portion slidably fitted in the engaging recess of the fixing member. And a blindfold member having a decorative portion that guides both end portions of the top plate, and one of the fixing member and the engaging member is positioned below the both sides of the bottom surface of the top plate on the inner surfaces facing each other of the pair of side plates. Since the other of the fixing member and the engaging member is attached to both sides of the lower surface of the top plate, and the blindfold member is attached to the upper part of the pair of side plates, the top plate is slid on the upper part of the pair of side plates. When attaching, the both ends of a top plate can be guided by the decorative part of a blindfold member. In this case, for example, if the blindfold members are respectively attached to the inner surfaces facing each other of the pair of side plates, and the decorative portion protrudes to the inner surface side of the pair of side plates and is provided in parallel with the upper end surface of the side plates, When the top plate is slid in between and attached, the upper surface of both side end portions of the top plate can be guided by the decorative portion.

  Therefore, as in the first aspect of the invention, the substantially wedge-shaped fitting portion of the engaging member can be smoothly slid and inserted into the substantially wedge-shaped engaging recess of the fixing member, and The stop recess and the fitting portion can be reliably fitted in a surface contact state. For this reason, since concentration of stress can be prevented in a part of the locking recess and the fitting portion, sufficient strength can be secured even if the fixing member and the engaging member are compactly formed. In addition to being able to remove and firmly attach the top plate between the upper parts of the pair of side plates, in particular, it is possible to hide the gap between the top plate and the side plate so that it does not appear outside by the decorative part of the blindfold member. The design of the exterior case is not impaired, and the design of the exterior case can be enhanced by the decorative portion.

  According to the third aspect of the present invention, the fixing member attached to the mutually facing inner surfaces of the pair of side plates forms the locking recess by bending the metal plate into a substantially U-shaped cross section, and this locking recess The engagement member attached to the lower surface of the top plate is formed on one side of the metal plate in a configuration in which the upper side portion is formed substantially horizontally and the lower side portion is inclined obliquely downward from the front side toward the rear side. The fitting part is bent substantially vertically downward, and the lower side part of the fitting part is inclined obliquely downward from the front side to the rear side with the same inclination as the lower side part of the locking recess of the fixing member. Due to the configuration, when attaching the top plate to the upper part of the pair of side plates, if the top plate is slid from the rear side of the side plate toward the front side, the tapered portion of the front end portion in the fitting portion of the engaging member The upper side and bottom of the rear part in the locking recess of the fixing member It can be inserted from the wide portion of the parts, thereby it is possible to easily and reliably insert the fitting portion of the engaging member between the upper portion and the lower portion of the engagement recess of the fixing member.

  For this reason, the fitting portion of the engaging member can be smoothly slid between the upper side portion and the lower side portion of the locking recess of the fixing member so as to be reliably fitted in a surface contact state, thereby a pair of side plates. A top plate can be firmly attached to the top of the. In particular, the upper side of the locking recess of the fixing member is formed substantially horizontally, and the upper side of the engaging portion of the engaging member is formed parallel to the lower surface of the top plate. When the fitting part of the engaging member is inserted and slides between the part and the lower side part, by the upper side part of the substantially horizontal locking recess and the upper side part of the fitting part parallel to the lower surface of the top plate, The top plate is hardly displaced in the vertical direction, and the top plate can be slid almost horizontally, so that the top plate can be accurately and reliably attached between the upper portions of the pair of side plates.

  According to invention of Claim 4, the fixing member attached to the lower surface of a top plate forms the latching recessed part of a substantially U-shaped cross section in the one side part of a metal plate, The upper side part of this latching recessed part is formed. An engagement member that is formed in parallel to the lower surface of the top plate and that has a lower side inclined obliquely upward from the front side toward the rear side is attached to the inner surfaces of the pair of side plates facing each other. The upper side of the plate is bent almost horizontally, the fitting part is bent substantially vertically downward at the horizontally bent tip, and the lower side of the fitting part is inclined at the same inclination as the lower side of the locking recess of the fixing member. When the top plate is attached to the upper part of the pair of side plates, the top plate is directed from the rear side of the side plate toward the front side by being configured to be inclined obliquely upward from the front side to the rear side. When sliding, the tapered part of the front end of the engagement part of the engagement member The engagement member engaging portion can be inserted between the upper side portion and the lower side portion in the locking recess of the fixing member. Can be inserted easily and reliably.

  For this reason, as in the third aspect of the present invention, the engagement portion of the engagement member is smoothly slid between the upper side portion and the lower side portion of the locking recess of the fixing member to be securely fitted in a surface contact state. Accordingly, the top plate can be firmly attached to the upper part of the pair of side plates. Also in this case, the upper side portion of the locking recess of the fixing member is formed in parallel with the lower surface of the top plate, and the upper side portion of the engaging portion of the engaging member is formed substantially horizontally. When the fitting part of the engaging member is inserted between the upper side part and the lower side part of the concave part and slides, the upper side part of the engaging concave part parallel to the lower surface of the top plate and the upper side part of the fitting part which is substantially horizontal Thus, the top plate is hardly displaced in the vertical direction, and the top plate can be slid almost horizontally, so that the top plate can be accurately and reliably attached between the upper portions of the pair of side plates.

  According to the fifth aspect of the present invention, the counterbore portion, to which the fixing member is inserted and attached, is provided from the attachment position of the fixing member to the rear end surface on each of the opposing inner surfaces of the pair of side plates. Thus, the fixing member does not protrude from the inner surface of the side plate, and the fixing member can be embedded by being embedded in the counterbore portion of the side plate. In addition, when the engagement part of the engagement member protrudes laterally from both sides of the lower surface of the top plate and is inserted into the counterbore part, the top plate is slid onto the upper part of the pair of side plates and attached. Since the part slides in the spot facing part and fits into the locking recess of the fixing member, the fitting part of the fixing member and the engaging member does not protrude into the outer case and restrict the internal space of the outer case. The interior space of the exterior case can be secured sufficiently wide.

  For this reason, in order to prevent the engaging member attached to the top plate from protruding into the exterior case, it is not necessary to provide an attachment recess for embedding the engaging member on the lower surface of the top plate. In addition to reducing the overall weight and cost of the outer case, it can be fixed when, for example, a keyboard device is incorporated in the outer case and the keyboard lid is retractably stored. Since the fitting portion of the member and the engagement member does not protrude into the exterior case, it is only necessary to provide a gap slightly wider than the thickness of the engagement member between the top plate and the keyboard lid. The gap between the lid and the lid can be narrowed, whereby the entire outer case can be formed compactly and the design of the outer case can be improved.

  According to the sixth aspect of the present invention, the counterbore part to which the engaging member is inserted and attached to each of the mutually facing inner surfaces of the pair of side plates is provided from the attaching position of the engaging member to the rear end face. By doing so, the engaging member does not protrude from the inner surface of the side plate, and the engaging member can be embedded and attached to the counterbore portion of the side plate. In addition, the locking recess of the fixing member protrudes laterally from both sides of the lower surface of the top plate and is inserted into the counterbore portion. When the top plate is slid onto the upper part of the pair of side plates, it slides inside the counterbore portion. The engaging recess of the fixing member and the engaging member do not protrude into the outer case and restrict the inner space of the outer case. It can be secured sufficiently wide.

  For this reason, in order to prevent the fixing member attached to the top plate from protruding into the exterior case, it is not necessary to provide an attachment recess for embedding the engaging member on the lower surface of the top plate. Like the invention, the thickness of the top plate can be reduced, which makes it possible to reduce the weight and cost of the entire outer case. For example, a keyboard device is incorporated inside the outer case and the keyboard lid is provided. Since the locking recess and the engaging member of the fixing member do not protrude into the outer case, only a gap slightly wider than the thickness of the fixing member is provided between the top plate and the keyboard lid. Therefore, it is possible to narrow the gap between the top plate and the keyboard lid, thereby making it possible to form the entire outer case in a compact manner and to improve the design of the outer case. Kill.

(Embodiment 1)
Hereinafter, with reference to FIGS. 1-10, Embodiment 1 which applied the exterior case of this invention to the electronic piano is demonstrated.
1 is a cross-sectional view showing an electronic piano to which the present invention is applied, FIG. 2 is a cross-sectional view taken along the line A-A, FIG. 3 is a cross-sectional view showing a musical instrument case of the electronic piano in FIG. 3 is a cross-sectional view taken along the line BB of FIG. 3, FIG. 5 is a cross-sectional view of the musical instrument case with the top plate and the back plate removed, and FIG. 6 is a cross-sectional view taken along the line CC of FIG. .
As shown in FIG. 1, this electronic piano includes a musical instrument case 1 that is an exterior case, and various components necessary for the electronic piano such as a keyboard device 2 and a keyboard lid 3 are incorporated in the musical instrument case 1. It is configured.

  That is, as shown in FIGS. 1 to 6, the musical instrument case 1 includes a bottom plate 4, a lower front plate 5 attached to the front portion (left side in FIG. 1) of the bottom plate 4, and both left and right sides of the bottom plate 4 (see FIG. 1 to FIG. 6). 1, a pair of side plates 6 (only one is shown in FIGS. 1 to 6) respectively attached to the front and back sides of the paper surface, and a back plate 7 attached to the rear portion (right side in FIG. 1) of the pair of side plates 6. And a top plate 8 sandwiched between the upper parts of the pair of side plates 6, the keyboard device 2 is attached on the bottom plate 4, and the keyboard lid 3 is attached above the keyboard device 2 so that it can be pulled out. It has a configuration.

  In this case, as shown in FIG. 1, the keyboard device 2 is arranged on the bottom plate 4 with a large number of white keys and black keys arranged in order of scale, and these white keys and black keys protrude above the lower front plate 5. Has been. The keyboard lid 3 includes a front lid 3a and a rear lid 3b. The front lid 3a and the rear lid 3b are connected to be bent by a hinge 3c, and the front lid 3a and the rear lid 3b are paired with a pair of side plates. 6 are guided by a front guide rail 9 and a rear guide rail 10 provided respectively on the inner surfaces facing each other so as to be drawn out, and cover the upper side of the keyboard device 2 when the front lid 3a and the rear lid 3b are pulled out. It is configured.

  That is, as shown in FIG. 1, the front lid 3 a is provided with guide rollers 11 on both sides of the lower surface of the front part, and the guide rollers 11 are arranged by a front guide rail 9 disposed along the upper side of the keyboard device 2. When the front cover 3a is moved backward when guided and used with the keyboard device 2, it is stored almost horizontally from the upper side of the keyboard device 2 to the lower side of the top plate 8 positioned behind the keyboard device 2, Thus, the keyboard device 2 is configured to be exposed to the upper side. As shown in FIGS. 1 and 2, the front guide rails 9 are respectively provided in the storage recesses 13a cut out on the inner surfaces of the side plates 6 facing each other.

  Further, the rear cover 3b is provided with guide gears 12 on both sides of the lower surface of the rear part thereof, and the guide gears 12 are curvedly provided from the upper rear part of the keyboard device 2 to the lower rear part of the keyboard device 2. When the rear cover 3b is moved backward when using the keyboard device 2 while being engaged with the rack 10a of the side guide rail 10, the arc is drawn from the upper rear side of the keyboard device 2 while being bent by the hinge 3c. It is accommodated in a state of standing substantially vertically along the inner surface side of the back plate 7 below the plate 8. As shown in FIGS. 1 and 2, the rear guide rail 10 and its rack 10a are also provided in storage recesses 13b cut out to the rear side on the inner surface of each side plate 6, respectively.

  By the way, in the musical instrument case 1, the top plate 8 extends from the substantially middle portion in the front-rear direction of the pair of side plates 6, that is, from the position located substantially above the rear end portion of the keyboard device 2 to the rear end portions of the pair of side plates 6. The top plate 8 is arranged so as to be detachably sandwiched between the upper portions of the pair of side plates 6 and attached. That is, countersunk grooves 14 correspond to the top plate 8 at positions located on the lower surfaces of the top plate 8 on the inner surfaces of the pair of side plates 6 facing each other, as shown in FIGS. As shown in FIG. 5, fixing members 15 each having a substantially wedge-shaped locking recess 16 are attached by countersunk screws 17 in the counterbore groove 14.

  Also, on both sides of the lower surface of the top plate 8, as shown in FIGS. 3, 4, and 8, there are substantially wedges that are slidably fitted into the locking recesses 16 of the fixing members 15 attached to the pair of side plates 6. Engaging members 18 each having a fitting part 19 having a shape are respectively attached by countersunk screws 17. Further, in the upper inner surfaces of the pair of side plates 6 facing each other, the portions corresponding to both side surfaces of the top plate 8 are approximately the same length as the length of the top plate 8 in the front-rear direction, as shown in FIGS. The blindfold members 20 are respectively attached along the upper end of the side plate 6 by a flat head screw 17. Note that the heads of the countersunk screws 17 are embedded in the fixing member 15, the engaging member 18, and the blindfold member 20, respectively, so that they do not protrude from the surfaces of the members 15, 18, and 20.

  In this case, as shown in FIGS. 7A to 7C, the fixing member 15 is formed with a substantially wedge-shaped locking recess 16 by bending a substantially strip-shaped metal plate into a substantially U-shaped cross section. Has been. That is, the locking recess 16 is formed such that the upper side portion 16a is bent substantially at right angles toward the inner surface side of the side plate 6 and thereby formed substantially horizontal, and the lower side portion 16b is inclined downward from the front side toward the rear side. In an inclined state toward the inner surface side of the side plate 6 so that the upper side portion 16a and the lower side portion 16b are vertically opposed to each other, and the interval between them is narrower on the front side and gradually wider on the rear side. It is formed as follows.

  Further, as shown in FIGS. 7A to 7C, the fixing member 15 has the front end portion of the upper side portion 16 a extending forward of the front portion of the lower side portion 16 b, and thereby the fixing member 15. It is configured to increase the overall strength. 4 and 5, the fixing member 15 has a counterbore groove in a state where the facing opening portions of the upper side portion 16 a and the lower side portion 16 b of the locking recess 16 face the inside of the side plate 6. 14 and are respectively attached by countersunk screws 17. In this case, the counterbore 14 into which the fixing member 15 is inserted and attached is formed continuously from the attachment position of the fixing member 15 to the rear end surface of the side plate 6 as shown in FIGS. 3 and 4. .

  As shown in FIGS. 8 and 9, the engaging member 18 has a substantially wedge-shaped fitting portion 19 on one side of a substantially rectangular metal plate, that is, on each of the left and right sides of the top plate 8. It is configured to be bent vertically downward. The fitting portion 18 is formed in a substantially wedge shape that is inserted and fitted between the upper side portion 16 a and the lower side portion 16 b in the locking recess 16 of the fixing member 15. That is, as shown in FIGS. 9A to 9C, the fitting portion 19 has an upper side portion 19 a formed in parallel with the lower surface of the top plate 8, and a lower side portion 19 b as a locking recess of the fixing member 15. 16 is formed to be inclined obliquely downward from the front side to the rear side with the same inclination as the lower side part 16b, and thus the whole is formed in a substantially wedge shape.

  In addition, as shown in FIGS. 9A to 9C, the engaging member 18 also has a front end portion 18a of the metal plate extending forward of the front portion of the fitting portion 19, thereby engaging the engaging member 18. The overall strength of the combined member 18 is increased. And this engaging member 18 is arrange | positioned at the both sides of the lower surface of the top plate 8, and the fitting part 19 provided in the one side part as shown to Fig.8 (a)-FIG.8 (c). The top plate 8 projects laterally from both end portions, and is attached to the lower surface of the top plate 8 with a flat head screw 17 in this state. For this reason, as shown in FIG. 10, when the engagement member 18 is attached by sliding the top plate 8 between the upper portions of the pair of side plates 6 and sandwiching the top plate 8, the fitting portion 19 has a counterbore groove 14 of the side plate 6. It is inserted from the rear side in this state, and in this state, it slides toward the front side along the counterbore groove 14 and is configured to fit into the locking recess 16 of the fixing member 15.

  As shown in FIGS. 1 to 6, the blindfold member 20 has a configuration in which a decorative portion 21 is formed on the upper side of the belt-like plate having the same length as the length of the top plate 8 in the front-rear direction. The decorative portion 21 is bent at a substantially right angle toward the inner side of the side plate 6, and a front end portion thereof is formed in an inclined portion 21 a corresponding to the front end portion of the top plate 8. The blindfold member 20 is attached to the upper inner surface of the side plate 6 corresponding to both side surfaces of the top plate 8, that is, the inner surface of the side plate 6 positioned above the counterbore groove 14 by a countersunk screw 17. Are arranged in parallel along the upper end surface of the side plate 6 in a state of protruding toward the inside of the side plate 6.

Next, the case where the top plate 8 is sandwiched between the upper portions of the pair of side plates 6 in the musical instrument case 1 will be described.
First, as shown in FIG. 5, a lower front plate is attached to the front portion of the bottom plate 4, and a pair of side plates 6 are attached to both sides of the bottom plate 4. At this time, as shown in FIG. 5 and FIG. 6, the fixing member 15 is preliminarily embedded in the counterbored grooves 14 of the pair of side plates 6 and attached with the countersunk screws 17, and positioned above the counterbored grooves 14. The blindfold member 20 is disposed on the inner surface of the side plate 6 and the decorative portion 21 is disposed substantially parallel to the upper end surface of the side plate 6. In this state, the blindfold member 20 is attached to the inner surface of the side plate 6 with the countersunk screws 17.

  At this time, as shown in FIG. 1, the front guide rail 9 is mounted in the front storage recess 13a on the inner surfaces of the pair of side plates 6 facing each other, and the rear guide rail is installed in the rear storage recess 13b. 10 is attached. In this state, the keyboard device 2 is disposed on the bottom plate 4, the guide roller 12 of the front lid 3 a of the keyboard lid 3 is attached to the front guide rail 9, and the guide gear 13 of the rear lid 3 b is fitted to the rear guide rail 10. The keyboard lid 3 is assembled so that it can be pulled out by meshing with the rack 10a.

  On the other hand, before attaching the top plate 8 to the pair of side plates 6, as shown in FIG. 8A, the back plate 7 is attached to the lower surface of the rear portion in advance, and the engaging members 18 are provided on both sides of the lower surface of the top plate 8. Is attached with a countersunk screw 17. At this time, as shown in FIGS. 8A to 8C, the substantially wedge-shaped fitting portions 19 of the engaging member 18 are protruded laterally from both end portions of the top plate 8, and in this state. The engaging member 18 is attached to the lower surface of the top plate 8 with a countersunk screw 17. As shown in FIG. 3, the top plate 8 is sandwiched and attached between the upper portions of the pair of side plates 6, and the back plate 7 is attached to the rear portion of the side plate 6 with screws 23.

  At this time, as shown in FIG. 10, the top plate 8 is inserted between the upper portions of the pair of side plates 6 from behind, and the ceiling portion 20 of the blindfold member 20 attached to the upper inner surface of the side plate 6 is used for the ceiling. A seat provided on the inner surface of the side plate 6 by sliding the top plate 8 toward the front side while guiding the upper surfaces of both end portions of the plate 8, and engaging portions 19 of the engaging members 18 attached to the top plate 8. Insert into the bore 14. In this state, when the top plate 8 is further slid forward, the substantially wedge-shaped fitting portion 19 of the engagement member 18 enters the counterbore groove 14 of the side plate 6 as shown in FIGS. It is inserted between the upper side portion 16a and the lower side portion 16b in the substantially wedge-shaped locking concave portion 16 of the fixed member 15 attached.

  That is, the tapered portion of the front end portion of the substantially wedge-shaped fitting portion 19 of the engaging member 18 is inserted from the wide portion of the rear upper side portion 16a and the lower side portion 16b of the substantially wedge-shaped locking recess portion 16 of the fixing member 15. Therefore, the fitting portion 19 of the engaging member 18 is smoothly inserted between the upper side portion 16a and the lower side portion 16b of the locking recess 16 of the fixing member 15 and securely fitted. In this case, the upper side portion 16a of the locking recess 16 of the fixing member 15 is bent substantially horizontally, and the upper side portion 19a of the fitting portion 19 of the engaging member 18 is formed parallel to the lower surface of the top plate 8, The top plate 8 is hardly displaced in the vertical direction by the upper side portion 16a of the substantially wedge-shaped locking recess 16 of the fixing member 15 and the upper side portion 19a of the substantially wedge-shaped fitting portion 19 of the engaging member 18. The top plate 8 slides almost horizontally along the decorative part 21 of the blindfold member 20.

  The front end portions on both sides of the top plate 8 come into contact with the inclined portion 21a of the decorative portion 21 of the blindfold member 20, and the substantially wedge-shaped fitting portion 18 of the engaging member 18 is locked to the substantially fixed wedge shape of the fixing member 15. When the concave portion 16 is inserted between the upper side portion 16a and the lower side portion 16b and fitted in a surface contact state, the top plate 8 is firmly attached between the upper portions of the pair of side plates 6 as shown in FIGS. It is done. Thereafter, the back plate 7 attached to the top plate 8 is attached to the rear ends of the pair of side plates 6 with screws 23. At this time, the mounting bracket 24 is previously attached to the bottom plate 4 with screws 25, and the back plate 7 is attached to the mounting bracket 24 with screws 23. Thereby, the top plate 8 is firmly attached so as to be removable between the upper portions of the pair of side plates 6.

  Thus, according to the musical instrument case 1, the substantially concave wedge-shaped locking recesses 16 are provided on the inner surfaces of the pair of side plates 6 facing each other and on the lower sides of the lower surfaces of the top plate 8. The fixing members 15 are respectively attached, and the engaging members 18 having the substantially wedge-shaped fitting portions 19 that are slidably fitted into the locking recesses 16 of the fixing member 15 are attached to both sides of the lower surface of the top plate 8. Since the cover part 20 provided in parallel with the upper end surface of the side plate 6 is attached to the upper inner surface of the side plate 6 facing each other, the decorative portion 21 protruding inward of the side plate 6 is attached. When the top plate 8 is slid and attached to the top plate 8, the upper surface of both end portions of the top plate 8 can be guided by the decorative portion 21 of the blindfold member 20.

  For this reason, the top plate 8 can be smoothly slid between the upper portions of the pair of side plates 6 and inserted, and the lower surface of the top plate 8 is inserted into the locking recesses 16 of the fixing members 15 respectively attached to the pair of side plates 6. The fitting portions 17 of the engaging members 18 attached to both sides can be fitted while smoothly sliding. That is, at this time, from the wide portion of the substantially wedge-shaped locking recess 16 of the fixing member 15 respectively attached to the pair of side plates 6, the substantially wedge-shaped engagement members 18 attached to both sides of the lower surface of the top plate 8. Since the tapered portion of the fitting portion 19 is inserted, the fitting portion 19 can be smoothly slid and inserted into the locking recess 16, and the locking recess 16 and the fitting portion 19 are reliably in a surface contact state. Can be fitted.

  As a result, stress can be prevented from concentrating on a part of the locking recess 16 and the fitting portion 19, so that sufficient strength is ensured even if the fixing member 15 and the engaging member 18 are compactly formed. be able to. For this reason, the top plate 8 can be detachably and firmly attached between the upper portions of the pair of side plates 6. In this state, the gap between the top plate 8 and the side plate 6 can be hidden so that the gap between the top plate 8 and the side plate 6 does not appear to the outside by the decorative portion 21 of the blindfold member 20 in particular. 21 can improve the design of the musical instrument case 1.

  In this case, in particular, the fixing member 15 has a substantially wedge-shaped locking recess 16 formed by bending a substantially strip-shaped metal plate into a substantially U-shaped cross section, and the upper side portion 15a of the locking recess 16 is formed substantially horizontally. The lower side portion 15b is formed so as to be inclined obliquely downward from the front side toward the rear side, and the engaging member 18 is fitted in a substantially wedge shape on one side portion of the substantially rectangular metal plate. The portion 19 is bent vertically downward, and the lower side portion 19b of the fitting portion 19 is inclined obliquely downward from the front side to the rear side at the same inclination as the lower side portion 16b of the locking recess 16 of the fixing member 15. Due to the formed configuration, when the top plate 8 is attached between the upper portions of the pair of side plates 6, when the top plate 8 is slid from the rear side to the front side of the side plate 6, The tapered portion of the front end portion of the fitting portion 19 is a fixing member 5 is inserted from the wide portion of the upper side portion 15a and the lower side portion 15b of the rear portion of the locking recess 16 so that the engagement member 18 is fitted between the upper side portion and the lower side portion of the locking recess 16 of the fixing member 15. The part 19 can be inserted easily and reliably.

  For this reason, the fitting part 19 of the engaging member 18 can be smoothly slid between the upper side part 16a and the lower side part 16b of the locking recess 16 of the fixing member 15 and can be reliably fitted in a surface contact state. Thus, the top plate 8 can be firmly attached between the upper portions of the pair of side plates 6. In this case, in particular, the upper side portion 16 a of the locking recess 16 of the fixing member 15 is bent substantially horizontally, and the upper side portion 19 a of the fitting portion 19 of the engaging member 18 is formed parallel to the lower surface of the top plate 8. When the engagement portion 19 of the engagement member 18 is inserted and slid between the upper side portion 16a and the lower side portion 16b of the engagement recess 16 of the fixing member 15, the upper side portion 16a of the substantially horizontal engagement recess 16 is slided. And the upper side portion 19a of the fitting portion 19 parallel to the lower surface of the top plate 8, the top plate 8 is hardly displaced in the vertical direction, and the top plate 8 is horizontally arranged along the decorative portion 21 of the blindfold member 20. The top plate 8 can be attached between the upper portions of the pair of side plates 6 accurately and satisfactorily.

  Further, counterbore grooves 14 to which the fixing member 15 is inserted and attached are provided on the inner surfaces of the pair of side plates 6 from the attachment position of the fixing member 15 to the rear end surface, so that the fixing member 15 is provided. The fixing member 15 can be embedded and attached to the counterbore groove 14 of the side plate 6 without protruding from the inner surface of the side plate 6. For this reason, even if the fitting part 19 of the engaging member 18 protrudes laterally from both sides of the top plate 8, it is inserted into the counterbore groove 14, and the inserted fitting part 19 passes through the counterbore groove 14. Since it slides and engages with the locking recess 16 of the fixing member 15, the fixing member 15 and the fitting portion 19 of the engaging member 18 may protrude into the instrument case 1 and restrict the internal space of the instrument case 1. In addition, the internal space of the musical instrument case 1 can be secured sufficiently wide.

  For this reason, since it is not necessary to provide the attachment recessed part for embedding the engagement member 18 in the lower surface of the top plate 8, in order to prevent the engagement member 18 attached to the top plate 8 from projecting inside the musical instrument case 1, The top plate 8 can be formed with a small thickness, thereby reducing the overall weight and cost of the musical instrument case 1. In particular, when the keyboard device 2 is incorporated into the instrument case 1 and the keyboard cover 3 is retractably stored, the fitting member 18 of the fixing member 15 and the engaging member 17 does not protrude into the instrument case 1. Therefore, as shown in FIGS. 1 and 2, it is sufficient to provide a gap slightly wider than the thickness of the engaging member 17 between the top plate 8 and the keyboard lid 3. As a result, the entire instrument case 1 can be made compact and the design of the instrument case 1 can be improved.

(Embodiment 2)
Next, a second embodiment in which the present invention is applied to an electronic piano will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same part as Embodiment 1 shown by FIGS.
The electronic piano instrument case 1 includes a fixing member 30 having a substantially wedge-shaped locking recess 31 and a fixing member 30 for detachably sandwiching the top plate 8 between upper portions of the pair of side plates 6. In addition to the engagement member 32 having a substantially wedge-shaped fitting portion 33 slidably fitted in the locking recess 31, a decorative portion for guiding both end portions of the top plate 8 as in the first embodiment. And a counterbore groove 34 is provided in each of the inner surfaces of the pair of side plates 6 facing each other and located below the top surface of the top plate 8. .

  As shown in FIGS. 12 (a) and 12 (c), the engaging member 32 has an upper side portion of the metal plate bent substantially horizontally, and a substantially wedge-shaped fitting portion at the horizontally bent tip portion. 33 is bent substantially vertically downward, and a lower side portion 33b of the fitting portion 33 is formed to be inclined obliquely upward from the front side toward the rear side. 12A, the engaging member 32 is inserted into the counterbore groove 34 of the side plate 6, and the upper side portion of the fitting portion 33 is lowered from the inner upper surface of the counterbore portion 34. It is arranged in the counterbore part 34 and attached with a countersunk screw 17 in a state of being slightly separated from the side. In this case, the counterbore part 34 is also formed continuously from the attachment position of the engagement member 32 to the rear end part of the side plate 6 as in the first embodiment.

  As shown in FIGS. 12A and 12B, the fixing member 30 has a locking recess 31 having a substantially U-shaped cross section formed on one side of a metal plate, and an upper side portion of the locking recess 31. 31a is formed substantially horizontally, and the lower side part 31b is formed to be inclined obliquely upward from the front side to the rear side with the same inclination as the lower side part 33b in the fitting part 33 of the engaging member 32, whereby the upper side The interval between the upper and lower portions of the portion 31a and the lower side portion 31b is formed so that the rear side is narrow and the front side is gradually widened. Then, as shown in FIG. 12A, the fixing member 31 is disposed on both sides of the lower surface of the top plate 8, and the opening portion of the locking recess 31 is directed to the side of the top plate 8. The top plate 8 projects laterally from both end portions, and is attached to the lower surface of the top plate 8 with a flat head screw 17 in this state.

  Also in such a musical instrument case 1, an engagement member having a substantially wedge-shaped fitting portion 33 on each inner surface of the pair of side plates 6 facing each other and on the lower side of both lower surfaces of the top plate 8. 32, respectively, and fixing members 30 each having a substantially wedge-shaped locking recess 31 into which the fitting portion 33 of the engaging member 32 is slidably fitted are attached to both sides of the lower surface of the top plate 8, and a pair of side plates Since the cover part 20 provided in parallel with the upper end surface of the side plate 6 is attached to the upper inner surfaces of the side plates 6 on the inner surfaces of the top plates 6 facing each other, the pair of side plates is provided. When the top plate 8 is slid and attached between the upper portions of the top plate 6, the upper surface of both side end portions of the top plate 8 can be guided by the decorative portion 21 of the blindfold member 20.

  For this reason, the top plate 8 can be smoothly slid between the upper portions of the pair of side plates 6, and the fitting portions 33 of the engagement members 32 respectively attached to the pair of side plates 6 can be inserted into the top plate 8. It can be fitted into the locking recesses 31 of the fixing member 30 attached to both sides of the lower surface while smoothly sliding. At this time, the tapered portions of the substantially wedge-shaped fitting portions 33 of the engaging members 32 respectively attached to the pair of side plates 6 are locked to the substantially wedge-shaped engagements of the fixing members 30 attached to both sides of the lower surface of the top plate 8. Since it inserts from the wide part of the recessed part 31, while being able to slide the fitting part 33 smoothly in the latching recessed part 31 and inserting reliably, the latching recessed part 31 and the fitting part 33 are fitted in a surface contact state. Can be combined.

  As a result, stress can be prevented from concentrating on a part of the locking recess 31 and the fitting portion 33, so that sufficient strength can be ensured even if the fixing member 30 and the engaging member 32 are compactly formed. be able to. For this reason, the top plate 8 can be detachably and firmly attached between the upper portions of the pair of side plates 6. Moreover, in this state, since the gap between the top plate 8 and the side plate 6 can be hidden by the decorative portion 21 of the blindfold member 20 so as not to appear outside, the design of the instrument case 1 is not impaired, and the decorative portion 21 can improve the design of the musical instrument case 1.

  Also in this case, a counterbore groove 34 to which the engaging member 32 is inserted and attached is provided on each inner surface of the pair of side plates 6 from the attachment position of the engaging member 32 to the rear end surface. The engaging member 32 does not protrude from the inner surface of the side plate 6, and the engaging member 32 can be embedded in the counterbore groove 34 of the side plate 6 and attached. For this reason, even if the locking recess 31 of the fixing member 30 protrudes laterally from both sides of the lower surface of the top plate 8, it is inserted into the counterbore groove 34, and the inserted locking recess 31 passes through the counterbore groove 34. Since it slides and engages with the fitting portion 33 of the engaging member 32, the locking recess 31 and the engaging member 32 of the fixing member 30 protrude into the instrument case 1 to restrict the internal space of the instrument case 1. The internal space of the musical instrument case 1 can be secured sufficiently wide. As a result, similarly to the first embodiment, the thickness of the top plate 8 can be reduced, the overall weight of the musical instrument case 1 can be reduced and the cost can be reduced, and the gap between the top plate 8 and the keyboard lid 3 can be reduced. The instrument case 1 as a whole can be made compact.

  In the above embodiment, the case where the top plate 8 is sandwiched between the upper portions of the pair of side plates 6 is described. However, the present invention is not limited to this, and both end portions of the top plate 8 are disposed on the upper end surfaces of the pair of side plates 6. You may make it attach in the state put. In this case, the blindfold member 20 is not necessarily provided. However, when the blindfold member 20 is provided, the blindfold member 20 is disposed on the upper end surfaces of the pair of side plates 6 and the decorative portion 21 is directed substantially vertically upward. In this state, the blindfold member 20 may be attached to the upper end surface of the side plate 6. Even with such a structure, both the end surfaces of the top plate 8 can be guided by the decorative portion 21 of the blindfold member 20, and the gap between the upper end surface of the side plate 6 and the lower surfaces on both sides of the top plate 8 can be hidden. Therefore, the same effect as the above-described embodiment can be obtained.

  Moreover, although the case where it applied to the musical instrument case 1 of an electronic piano as an exterior case was described in the said embodiment, it does not necessarily need to be an electronic piano and can be applied also to musical instruments, such as an acoustic piano and an electronic organ. In addition, it can be widely applied to furniture.

It is sectional drawing which showed the electronic piano to which this invention is applied. (Embodiment 1) It is sectional drawing in the AA arrow of FIG. It is sectional drawing which showed the musical instrument case of the electronic piano of FIG. It is sectional drawing in the BB arrow of FIG. It is sectional drawing which showed the state which removed the top plate and the back plate from the musical instrument case of FIG. It is sectional drawing in CC arrow of FIG. FIG. 5 is an enlarged view of the fixing member in FIG. 5, (a) is a front view thereof, (b) is a side view thereof, and (c) is a plan view thereof. The top plate in FIG. 3 and the engaging member attached to this are shown, (a) is the front view, (b) is the top view which showed the principal part, (c) is DD arrow of (a). FIG. FIG. 8 is an enlarged view of the engagement member of FIG. 8, (a) is a plan view thereof, (b) is a front view thereof, and (c) is a side view thereof. FIG. 6 is an exploded cross-sectional view illustrating a state in which the top plate is attached to the side plate in FIG. 5. It is sectional drawing which showed the musical instrument case of the electronic piano to which this invention is applied. (Embodiment 2) FIG. 11 is an enlarged view of the main part of FIG. 11, (a) is an exploded sectional view taken along the line EE in FIG. 11, (b) is a perspective view of the fixing member of (a), and (c) is of (a). It is a perspective view of an engaging member. FIG. 12 is an exploded cross-sectional view illustrating a state in which the top plate is attached to the side plate in FIG. 11.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Musical instrument case 4 Bottom plate 5 Lower front plate 6 Side plate 7 Back plate 8 Top plate 14, 34 Counterbore groove 15, 30 Fixing member 16, 31 Locking recessed part 16a, 31a Upper side part 16b, 31b Lower side part 18, 32 Engagement member 19, 33 Fitting part 19a, 33a Upper side part 19b, 33b Lower side part 20 Blindfold member 21 Cosmetic part

Claims (6)

In an exterior case having a pair of left and right side plates, a back plate attached to the rear part of the pair of side plates, and a top plate attached to the top of the pair of side plates,
A fixing member having a substantially wedge-shaped locking recess; and an engaging member having a substantially wedge-shaped fitting portion that slidably fits in the locking recess of the fixing member;
One of the fixing member and the engaging member is attached to each of the inner surfaces of the pair of side plates facing each other on the lower side of the lower surface of the top plate, and the other of the fixing member and the engaging member Are mounted on both sides of the lower surface of the top plate. In an exterior case having a pair of left and right side plates, a back plate attached to the rear part of the pair of side plates, and a top plate attached to the top of the pair of side plates,
A fixing member having a substantially wedge-shaped locking recess, an engaging member having a substantially wedge-shaped fitting portion slidably fitted in the locking recess of the fixing member, and both end portions of the top plate A blindfold member having a cosmetic part to guide,
One of the fixing member and the engaging member is attached to each of the inner surfaces of the pair of side plates facing each other on the lower side of the lower surface of the top plate, and the other of the fixing member and the engaging member Are attached to both sides of the lower surface of the top plate, and the blindfold members are respectively attached to the upper portions of the pair of side plates. The fixing member attached to the mutually facing inner surfaces of the pair of side plates has the locking recess formed by bending the metal plate into a substantially U-shaped cross section, and the upper side of the locking recess is formed substantially horizontally. The lower side portion is formed to be inclined obliquely downward from the front side toward the rear side,
The engaging member attached to the lower surface of the top plate is such that the fitting portion is bent substantially vertically downward on one side of a metal plate, and the lower side portion of the fitting portion is in the locking recess of the fixing member. The outer case according to claim 1, wherein the outer case is formed to be inclined obliquely downward from the front side to the rear side with the same inclination as the lower side part. The fixing member attached to the lower surface of the top plate is formed with the locking recess having a substantially U-shaped cross section on one side of a metal plate, and the upper side of the locking recess is parallel to the lower surface of the top plate. Formed, the lower side portion is formed to be inclined obliquely upward from the front side toward the rear side,
The engaging member attached to the inner surfaces of the pair of side plates facing each other has an upper side portion of the metal plate bent substantially horizontally, and the fitting portion is bent substantially vertically downward at a tip portion bent horizontally. The lower side portion of the fitting portion is formed so as to be inclined obliquely upward from the front side to the rear side at the same inclination as the lower side portion in the locking recess of the fixing member. Item 3. The outer case according to Item 1 or 2. Counterbore parts to which the fixing member is inserted and attached are provided from the attachment position of the fixing member to the rear end surface on each inner surface of the pair of side plates facing each other,
The fitting portion of the engaging member protrudes laterally from both sides of the lower surface of the top plate and is inserted into the counterbore portion, and when the top plate is slid onto the upper portions of the pair of side plates, The exterior case according to any one of claims 1 to 3, wherein the exterior case is slid in a spot facing portion and fitted into the locking recess of the fixing member. Counterbore portions to which the engaging member is inserted and attached are provided from the attachment position of the engaging member to the rear end surface on each inner surface of the pair of side plates facing each other.
The locking recess of the fixing member protrudes laterally from both sides of the lower surface of the top plate and is inserted into the counterbore portion. When the top plate is slid onto the top of the pair of side plates, The exterior case according to claim 1, wherein the fitting portion of the engagement member is fitted by sliding in a bore portion.

Images