JP2004213044A - Electronic keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily assemble a housing in good appearance. <P>SOLUTION: The housing of an electronic keyboard instrument has a 1st housing part including a bottom plate part where a keyboard part is mounted and a 2nd housing part including a roof plate part and a rear plate part, and is constituted by detachably fitting the 2nd housing part to the 1st housing part. The 2nd housing part further includes a reinforcing member which couples the roof plate part and rear plate part with each other and when the 2nd housing part is fitted to the 1st housing part to constitute the housing, the reinforcing member is coupled with the bottom plate part. Consequently, the strength of the 2nd housing part increases suitably for attachment and detachment and is useful for reinforcement of the whole structure of the housing. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a housing structure of an electronic keyboard instrument.

In an electronic keyboard instrument having a flat board-like housing shape as a whole, the housing structure includes a bottom plate portion on which a keyboard portion is placed, a mouthpiece portion located in front of the keyboard portion, and left and right sides of the keyboard portion. It consists of left and right side plate parts located on the side, a roof plate part that forms the rear upper surface, and a back plate part. These plate parts are generally connected to each other via screws, etc. Is formed. However, in such a case configuration, disassembly and reassembly of the case when performing maintenance and inspection inside the case is troublesome.
On the other hand, in Patent Document 1 below, a housing of an electronic keyboard instrument is constituted by a rear cover having an integrated upper surface and a rear surface and a main body, and the rear cover is provided for a bottom plate provided in the main body. Shown are hinged connections that allow the rear cover to be opened and closed. However, in this case, when assembling the housing, the last screw fastening for fixing the rear cover to the main body is always performed on the upper surface side of the housing, so that the screw head is exposed on the upper surface, and Not preferred. Further, since the rear cover is not detachable from the housing body, assembly is troublesome, and maintenance and inspection of a circuit board and the like inside the housing are difficult to perform.
Japanese Utility Model Publication No. 62-103382

  In the above-mentioned type of electronic keyboard musical instrument, the main circuit board is arranged on the bottom plate in consideration of the ease of maintenance and inspection. However, when the main circuit board is provided on the bottom plate behind the keyboard, the size of the bottom plate in the front-back direction must be increased, and the size of the musical instrument in the front-back direction increases. Further, when the main circuit board is provided on the bottom plate portion below the keyboard portion, the thickness of the musical instrument in the vertical direction increases.

  The present invention has been made in view of the above points, and aims to provide an electronic keyboard instrument having a housing structure that can be easily assembled with a good appearance and that allows easy maintenance and inspection inside the housing. It is.

  The present invention provides an electronic keyboard instrument including a keyboard portion and a housing in which the keyboard portion is arranged, wherein the housing includes a first housing portion including a bottom plate portion on which the keyboard portion is placed, A second housing portion including a roof plate portion and a back plate portion, wherein the second housing portion is detachably attached to the first housing portion to form the housing; The second housing portion further includes a reinforcing member that couples the roof plate portion and the back plate portion, and the second housing portion is attached to the first housing portion. When configuring the housing, the reinforcing member is coupled to the bottom plate. According to this, the housing is divided into two parts, a first housing part and a second housing part, and the second housing part is made detachable from the first housing part. As a result, the housing can be easily assembled and / or disassembled, and the reinforcing member reinforces the second housing portion, so that it is suitable for attachment and detachment. Will also be easier to do. When the second housing portion is attached to the first housing portion to form a housing, the reinforcing member is coupled to the bottom plate portion to reinforce the entire structure of the housing. Also helps.

  According to the embodiment, the bottom plate (5) is located between the lower ends (53a to 53c) of the reinforcing members (connection holding plates 21a to 21c) and the lower edge (51) of the back plate (7). Hold the edge. This makes it easier to attach the second housing portion to the first housing portion. According to the embodiment, the bottom plate portion (5) sandwiched between lower ends (53a to 53c) of the reinforcing members (21a to 21c) and a lower edge portion (51) of the back plate portion (7). Is fixed by screwing.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1A is a plan view showing an example of an electronic keyboard instrument according to the present invention. FIG. 1B shows a rear view thereof, and FIG. 1C shows a bottom view thereof. The housing 1 of the electronic keyboard instrument according to the present embodiment is roughly composed of a housing main body 2 (first housing portion) and a housing rear portion 3 (second housing portion). As schematically shown, a housing rear portion 3 is detachably attached to the housing body 2. The housing body 2 includes a bottom plate portion 5 on which the keyboard portion 9 is placed, a mouth stick portion 8 rising from the bottom plate portion 5 in front of the keyboard portion 9, and left and right rising from the bottom plate portion 5 on the left and right sides of the keyboard portion 9. The bottom plate 5, the side plates 6a and 6b, and the spigot 8 are fixedly connected to each other via an appropriate connecting means such as a screw. The housing rear portion 3 includes a roof plate portion 4 constituting the rear upper surface of the housing 1 and a rear plate portion 7 falling from the rear edge of the roof plate portion 4, and the roof plate portion 4 and the rear plate portion 7 are screwed. Etc., and are fixed to each other via appropriate joining means. As shown in FIG. 1B, the rear plate 7 is provided with main tone holes 10a and 10b, which are sound outlets for sound output from both left and right speakers (not shown). As shown in FIG. 1 (a), sub-tone holes 11a and 11b, which are openings for emitting acoustic vibrations from the back of the speaker, and operation switches including various operation switches, a display, and the like are provided at predetermined locations on the roof panel portion 4. A panel 12 is provided.

  Attachment of the housing rear part 3 to the housing main body part 2 is performed via slide fixing means for slidingly fixing the housing rear part 3 to the housing main body part 2. In the embodiment described first, the mechanism constituting the slide fixing means is provided on the lower surface of the roof plate portion 4 in the rear portion 3 of the housing, and the upper end portions of the left and right side plate portions 6a and 6b in the main body portion 2 of the housing. Thereby, the slide fixing means is configured to slide and fix the housing rear portion 3 to the left and right side plate portions 6a and 6b of the housing main body 2.

  First, a specific example of the housing rear portion 3 will be described with reference to FIGS. (A) is an elevation view of the rear part 3 of the housing when the back surface of the rear plate part 7 is viewed from the inside of the housing 1, and (b) is an arrow from the arrow a in FIG. FIG. 3C is a right side view of the side surface of the housing rear portion 3 as viewed from an arrow b in FIG. The roof plate portion 4 and the rear plate portion 7 that constitute the housing rear portion 3 are connected at substantially right angles, and the connection between the two is reinforced at three places on the left, right, and center via the connection holding plates 21a to 21c. I have. Referring to FIG. 3 (c), the right-side holding plate 21a is connected to the rear plate 7 at the rear end, is connected to the roof plate 4 at the upper end, and the lower end 53a is perpendicular to the holding plate 21a. A bent portion is provided continuously from the portion, and can be coupled to the bottom plate portion 5 via a screw or the like as described later. The other coupling holding plates 21b and 21c have the same configuration. As shown in FIG. 3A, speakers 20a and 2b are provided at predetermined positions near the left and right ends of the back plate 7, respectively. The center coupling holding plate 21c also plays a role of acoustic separation between the left and right speakers 20a, 20b. The lower edge portion 51 of the rear plate portion 7 is bent in a substantially horizontal direction toward the inside, and is in contact with one side edge of the bottom plate portion 5 via screws or the like, as described later.

  As shown in FIG. 3 (b), at a predetermined position near the left and right ends of the back surface of the roof plate portion 4, slide fixing means for slidingly fixing the housing rear portion 3 to the left and right side plate portions 6a, 6b is provided. As one component, projections 31a to 31d are provided, respectively. Referring to FIG. 3C, the slide fixing projections 31a and 31b provided at the right end of the back surface of the roof plate portion 4 will be described. These are provided at predetermined positions near the front and rear, respectively. Screw heads 33a, 33b are formed at the respective distal ends of the projections 31a, 31b, and collar portions 34a, 34b are provided at predetermined intervals from the screw heads 33a, 33b. Sliding gaps 32a, 32b are formed between the flanges 33a, 33b and the flanges 34a, 34b. The slide fixing projections 31c and 31d provided on the left end of the back surface of the roof plate 4 have the same configuration.

  Next, an example of the components of the slide fixing means provided on the left and right side plate portions 6a and 6b of the housing body 2 will be described with reference to FIGS. FIG. 4 is a top view of the housing body 2, and FIG. 5A is an enlarged view of the upper surface of the right side plate 6a. On the rear upper surface of the left and right side plate portions 6a, 6b of the housing body 2, slide portions 35a to 35d are provided in an arrangement corresponding to the slide fixing projections 31a to 31d of the housing rear portion 3, respectively. As shown in FIG. 5A, each of the slide portions 35a and 35b includes large holes 36a and 36b, and long holes 37a and 37b connected to the large holes 36a and 36b and extending forward of the housing. The recesses 38a and 38b are formed around the periphery. The large holes 36a, 36b have a diameter that allows the screw heads 33a, 33b of the corresponding slide fixing projections 31a, 31b to pass therethrough, and the width of the long holes 37a, 37b is equal to the screw heads 33a, 33b. And smaller than the diameter of the collar portions 34a, 34b. The recesses 38a and 38b are recesses into which the flanges 34a and 34b of the corresponding slide fixing projections 31a and 31b are fitted when the housing rear portion 3 and the housing body 2 are connected to each other. , 34b. A tapered surface (39a in FIG. 5B) is formed in a predetermined range on the back surface of the concave portions 38a and 38b as described later. The other slide portions 35c and 35d have the same structure.

  As shown in FIG. 2, in order to attach the housing rear portion 3 to the housing main body portion 2, the housing rear portion 3 is installed from behind the housing main portion 2, and the slide fixing protrusion on the lower surface of the roof plate portion 4. The screw heads 33a, 33b,... Of the base plates 31a to 31d are dropped into the corresponding large holes 36a, 36b,. Direction). FIG. 5B is a cross-sectional view taken along the line GG of FIG. 5A, and shows a state where the corresponding protrusion 31a is dropped into the slide portion 35a. In this state, the flanges 34a, 34b,... Of the projections 31a to 31d are located in the corresponding recesses 38a, 38b,... In the slides 35a to 35d, and the gaps 32a, 32b, Are located at the heights of the corresponding large holes 36a, 36b, ... in the slide portions 35a to 35d, and the screw heads 33a, 33b, ... of the respective projections 31a to 31d are the corresponding large holes 36a, 36b, ... Project below. When the rear portion 3 of the housing (the roof plate portion 4 in FIG. 5B) is slid forward from this state, that is, in the direction of the arrow X, the gap portions 32a, 32b,... Of the projection portions 31a to 31d become slide portions 35a to 35d. Can be moved forward by being guided by the corresponding long holes 37a, 37b,..., Whereby the housing rear portion 3 slides forward and is mounted on the housing main body 2.

  A tapered surface 39a is formed in a predetermined range on the back surface of the concave portion 38a, 38b,... In each of the slide portions 35a to 35d. The taper surfaces 39a are inclined downward toward the front of the instrument, and the slide portions 35a to 35d gradually become thicker as the taper surfaces 39a are inclined downward. At the locations of the tapered surfaces 39a,..., The plate thickness of each of the slide portions 35a to 35d gradually becomes larger than the width of the gap portions 32a, 32b,. For this reason, at the sliding completion position of the housing rear part 3 (that is, the mounting position of the housing rear part 3), at the places of the gaps 32a, 32b,..., That is, the screw heads 33a, 33b,. , The corresponding slide portions 35a to 35d are tightly held. That is, the screw heads 33a, 33b,... Which have completely climbed the tapered surfaces 39a,. You. In this manner, the housing rear portion 3 is slid forward and fixed to the side plate portions 6a, 6b, and attached to the housing main body portion 2.

  As shown in FIG. 5 (b), adjuster projections 40a,... Are provided at the rear ends of the rear surfaces of the slide portions 35a to 35d, respectively. The adjuster projections 40a,... Are provided immediately after the large holes 36a, 36b,... Of each of the slide portions 35a to 35d, and when the rear housing 3 is slid backward to remove it from the housing main body 2. , The screw heads 33a, 33b,... Of the slide fixing projections 31a to 31d are stopped at the corresponding adjuster projections 40a,. By the adjuster projections 40a, the screw heads 33a, 33b,... Of the slide fixing projections 31a to 31d can be positioned below the corresponding large holes 36a, 36b,. Therefore, the operation of removing the housing rear portion 3 from the housing main body 2 can be performed smoothly.

  The housing body 2 and the housing rear 3 are further connected to the bottom plate 5 and the rear lower end of the housing rear 3 in addition to the connection by the above-described slide fixing means, as described below. The connection is made stronger and more secure.

  As shown in FIG. 3C, the lower edge 51 of the back plate 7 is bent in a substantially horizontal direction toward the inside, and the lower edge 51 is provided with screw holes 52a to 52f. . The lower ends 53a to 53c (see FIG. 3A) of the coupling holding plates 21a to 21c are also bent portions, and the lower ends 53a to 53c are provided with screw holes 54a to 54c, respectively. The lower edge 51 of the back plate 7 is located at the height of the lower surface of the bottom plate 5, and the lower ends 53a to 53c of the coupling holding plates 21a to 21c are located at the height of the upper surface of the bottom plate 5. The bottom plate 5 is sandwiched between the lower edge 51 and the lower ends 53a to 53c. When the housing rear part 3 is slidably mounted on the housing main body part 2, the rear edge part of the bottom plate part 5 is fitted between the lower edge part 51 and the lower end parts 53a to 53c. The lower edge portion 51 of the back plate portion 7 is in contact with the lower surface side of the bottom plate portion 5 and is screwed to the bottom plate portion 5 through each of the screw holes 52a to 52f. The lower ends 53a to 53c of the coupling holding plates 21a to 21c are in contact with the upper surface of the bottom plate 5, and are screwed to the bottom plate 5 through screw holes 54a to 54c, respectively. This screwing is performed entirely from the lower surface of the bottom plate portion 5, as shown in FIG. A plurality of screws are fixed at the lower edge 51 of the back plate 7 and the lower ends 53a to 53c of the coupling holding plates 21a to 21c, and the screwing positions of the lower edge 51 and the lower ends 53a to 53c correspond to the positions of the musical instrument. Since it is shifted in the front-rear direction, the housing rear part 3 fixed to the housing body 2 is less likely to rattle in the front-rear direction.

  In order to remove the housing rear part 3 from the housing main body part 2, the screws provided on the bottom surface of the bottom plate part 5 are removed, and the housing rear part 3 is slid backward (in the direction opposite to the arrow X). As a result, the engagement / fixation between the protrusions 31a to 31d of the housing rear portion 3 and the tapered surfaces 39a,... Of the slide portions 35a to 35d is released. The screw heads 33a, 33b,... Of the projections 31a to 31d are stopped by adjuster projections 40a provided on the slides 35a to 35d, and are located below the corresponding large holes 36a, 36b,. , And can move upward through the large holes 36a, 36b,. Therefore, by lifting the rear housing 3 at the rear slide stop position, the rear housing 3 can be easily removed from the main housing 2.

Returning to FIG. 3, main circuit boards 22 a and 22 b including a sound source and the like are disposed on the back plate portion 7 (see FIG. 3A), and a portion corresponding to a lower portion of the operation panel 12 on the back surface of the roof plate portion 4. In addition, a panel circuit board 60 is disposed (see FIG. 3B). By arranging the circuit board on the side of the housing rear part 3 as described above, the circuit board can be attached to and detached from the housing main body 2 together with the housing rear part 3. Therefore, when performing maintenance work on a circuit board or the like in the housing 1, the housing rear portion 3 is slid backward from the housing main body portion 2 and removed, and the housing rear portion 3 is placed in a state where it is easy to work. Since maintenance work on the main circuit boards 22a and 22b and the like may be performed, maintenance and inspection work can be easily performed. Further, since there is no need to provide a space for disposing the main circuit boards 22a, 22b and the like in the bottom plate portion 5, the size of the bottom plate portion 5 in the front-rear direction can be reduced, and the size of the musical instrument and the weight of the musical instrument can be reduced. it can.
In the above-described embodiment, the left and right side plate portions 6a and 6b belong to the housing body 2 and are provided integrally therewith. However, the left and right side plate portions 6a and 6b belong to the housing rear portion 3 and integrally therewith. It may be provided. Even in this case, the technical idea of the present invention in which the housing rear portion 3 is attached to and detached from the housing main body 2 from behind can be reflected. In this case, the roof plate portion 4 and the side plate portions 6a, 6b are of course integrally formed from the back surface (inside) via an L-shaped bracket, but the front portions of the side plate portions 6a, 6b and the left and right end portions of the mouth bar portion 8 are formed. Is merely a butt structure. In other words, it is only necessary to finish the configuration in which the front inner edges of the left and right side plate portions 6a and 6b slide forward and overlap the both end surfaces of the mouth rod portion 8 and lightly touch. The connection between the mouth rod 8 and the bottom plate 5 is made by connecting the above-mentioned connection holding plates 21a to 21c with a reduced and simplified connection fitting or L-shaped fitting.

In the above-described example, an example in which the rear lower end portion of the housing rear portion 3 and the housing main body 2 are fixed by screwing is shown. However, as another embodiment, screwing is used as shown in FIG. Instead, the elastic deformation fitting means (patchon fitting means) may be used. FIG. 6A is a schematic perspective view of a part of the bottom plate part 5 and a part of the back plate part 7 seen from the lower surface. For convenience of explanation, only a part of each left end is shown and the other is represented. In the drawing, a fitting projection 61 is provided on the lower edge portion 51 of the back plate portion 7 so as to project upward through a cut groove 51a. The fitting projection 61 is provided with an engagement hole 64. At a predetermined position on the lower surface of the bottom plate portion 5 corresponding to the fitting projection 61, an elastically deformable fitting locking portion 62 is provided. FIG. 6B is a diagram showing only the fitting and locking portion 62 taken out, and is shown upside down from FIG. The fitting and locking portion 62 includes a concave portion 65 that allows the fitting projection 61 to enter, a fitting and disengaging operation portion 63b at the tip, and an engaging projection 63a provided so as to face the concave portion 65 immediately inside thereof. And an elastic fitting body 63 having the same. The engagement projection 63a has a tapered tip on one side, and acts so as to freely advance and retreat into the recess 65.
When the fitting projection 61 is inserted into the concave portion 65 when the rear plate portion 7 and the bottom plate portion 5 are joined, the one-side tapered portion of the engaging projection 63 a is pressed by the fitting projection 61, and the engaging projection 63 a is removed from the concave portion 65. At the position corresponding to the hole 64 of the fitting protrusion 61, the pressing of the engaging protrusion 63 a by the engaging protrusion 61 is released, and the engaging protrusion 63 a returns into the concave portion 65 by the repulsive force of the elastic fitting body 63. The mating projection 63a fits into the hole 64 of the fitting projection 61. FIG. 6C is a cross-sectional view illustrating a state in which the engagement protrusion 63a is fitted into the hole 64 of the fitting protrusion 61. In this manner, the rear plate 7 and the bottom plate 5 are fixed. By providing the cut groove 51a while the projection 61 is being fitted into the concave portion 65, the base 51b becomes elastic, and the back plate 7 generates flexibility with respect to the bottom plate 5, thereby enabling a smooth fitting. I have to.
In the elastic fitting body 63, an operating portion 63b for fitting and disengaging is formed substantially at right angles to the engaging projection 63a. When removing the rear plate 7 and the bottom plate 5, the operating portion 63b is pulled to retract the engaging protrusion 63a from the concave portion 65, and the engaging protrusion 63a is fitted into the hole 64 of the fitting protrusion 61. Unscrew and remove the fitting projection 61 from the recess 65.
When such two elastic deformation fitting means (elastic fitting body 63 and base 51b) are used, there is no need to screw the housing body 2 and the housing rear 3 at all, so the housing body 2 In addition, the disassembling and mounting work of the housing rear part 3 becomes easy.

The slide fixing means is not limited to the above-mentioned type, but may be any mechanism as long as it slides the housing rear portion 3 with respect to the housing main body portion 2 and then fixes the slide. Further, in the present embodiment, an example is shown in which the back surface of the roof plate portion 4 is engaged with the upper surfaces of the corresponding side plate portions 6a and 6b and slides in the front-rear direction. A configuration in which the rear surface 75 of the rear plate portion 7 and the rear surfaces of the side plate portions 6a and 6b are engaged with each other and slid in the vertical direction may be employed.
Further, in the above-described embodiment, the rear plate 7 and the roof plate 4 constituting the rear part 3 of the housing are coupled at a substantially right angle. However, the present invention is not limited to this. For example, 60 degrees, 120 degrees, It is only necessary that they are connected at an appropriate angle.
When only the configuration in which the main circuit portion and the like are provided in the housing rear portion 3 is implemented, the housing rear portion 3 and the housing main body portion 2 may be detachably attached by appropriate means instead of the above-described slide fixing means. Good.

  Finally, another embodiment of the slide fixing means for slidingly fixing the housing rear portion 3 to the housing body 2 will be described with reference to FIG. In this embodiment, the slide portions 351a to 351d are provided on the bottom plate portion 5 of the housing body 2, and the slide fixing protrusions 311a to 311d that slidably engage with the slide portions 351a to 351d are provided. The left and right legs 41a, 41b are provided at the lower edges of the left and right legs 41a, 41b extending downward from the roof plate 4 of the rear part 3. For example, as shown in FIG. 7A, a slide member 351 having two slide portions 351c and 351d is attached to one end of the bottom plate portion 5 (a portion near one side plate portion 6b) by screwing or the like. Can be Similarly, another slide member formed with two slide portions 351a and 351b is attached to the other end of the bottom plate portion 5 (a portion near the other side plate portion 6a) by screwing or the like. In a), it cannot be seen because it is behind the side plate portion 6a, and only the numbers 351a and 351b are added for reference. Each of the slide portions 351a to 351d has a large hole portion (36a), a long hole portion (37a), a tapered surface (39a), and the like, similarly to the above-described slide portion 35a shown in FIGS. It is comprised including the element of. Therefore, FIG. 5 and its description are referred to for the detailed illustration and description of these elements, and the detailed illustration and description of these elements are omitted in FIG.

  The lower edges of the legs 41a, 41b extending downward on the lower surface of the roof plate portion 4 are bent inward at substantially right angles to form an elongated horizontal portion. Slide fixing projections 311a to 311d are provided downward in the horizontal portions of the lower edges of the legs 41a and 41b. FIG. 7B is an enlarged view of one slide fixing protrusion 311c provided on the leg 41b, and is similar to the slide fixing protrusion 31a shown in FIG. 5B. , A screw head 331c, a gap 321c, and a collar 341c. The slide fixing projection 311c is screwed to the nut 312 and fixed to the lower edge horizontal portion of the leg 41b. Four slide fixing protrusions 311 a to 311 d are provided on the legs 41 a and 41 b of the roof plate 4 so as to correspond to the arrangement of the four slides 351 a to 351 d provided on the bottom plate 5. The other slide fixing protrusions 311a, 311b, 311d are not clearly shown because they are shaded in FIG. 7A, but have the same configuration as the protrusion 311c.

  In the embodiment of FIG. 7, the slide fixing operation of the slide fixing projections 311 a to 311 d to the slide portions 351 a to 351 d when attaching the housing rear portion 3 to the housing main body 2 is performed as shown in FIG. 5. The operation is the same as the slide fixing operation of the slide fixing protrusions 31a to 31d in the example with respect to the slide portions 35a to 35d, and therefore the description is omitted. That is, due to the presence of the tapered surface, the more the housing rear part 3 is pushed into the housing main body part 2 in the direction of the arrow X, the harder the connection. The distance D1 from the upper surface of the slide portions 351a to 351d to the upper edges of the side plate portions 6a and 6b, and the distance D2 from the flange portion (341c) of the slide fixing projections 311a to 311d to the lower surface of the roof plate portion 4 Is longer in D1 by an appropriate clearance C. That is, D1 = D2 + C. As a result, the roof panel portion 4 is pressed against the housing main body portion 2 and a hard connection is obtained.

  The arrangement (see FIG. 7) of the slide portions 351a to 351d having holes and tapered surfaces and the slide fixing protrusions 311a to 311d in the slide fixing means (see FIG. 7) may be reverse to that in the above embodiment. That is, the sliding portions 351 a to 351 d (see FIG. 7) including elements (see FIG. 5) such as the large hole portion (36 a), the long hole portion (37 a), and the tapered surface (39 a) are connected to the roof plate portion 4 side. May be provided on the lower edge horizontal portion of the legs 41a and 41b, and the slide fixing protrusions 311a to 311d may be provided on the slide member 351 on the bottom plate 5 side with the protrusions 311a to 311d facing upward. Similarly, in the case where the slide portions 35a to 35d are provided on the side of the side plate portions 6a and 6b as in the example of FIG. 5, similarly, the slide portions 35a to 35d having holes and tapered surfaces in the slide fixing means and the slide fixing projections. The arrangement of the parts 31a to 31d may be reversed from that in the above embodiment. That is, slide portions 35a to 35d including elements such as the large hole portion (36a), the long hole portion (37a), and the tapered surface (39a) are provided on the lower side of the roof plate portion 4 and the slide fixing protrusions. The parts 31a to 31d may be provided on the upper surfaces of the side plate parts 6a and 6b with the parts 31a to 31d facing upward.

  As described above, according to the present embodiment, it is possible to provide an electronic keyboard instrument having a housing structure in which the housing can be easily assembled with good appearance and the inside of the housing can be easily inspected.

(A) is a plan view showing an embodiment of an electronic keyboard instrument according to the present invention, (b) is a rear view of the electronic keyboard instrument according to the embodiment, and (c) is a bottom surface of the electronic keyboard instrument according to the embodiment. FIG. The schematic perspective view which divided the housing | casing of the electronic keyboard musical instrument which concerns on the example into the housing | casing main body and the housing | casing back part. FIGS. 7A and 7B are diagrams for explaining a rear portion of a housing of the electronic keyboard instrument according to the embodiment, wherein FIG. 7A is an elevation view of the rear portion of the housing, FIG. 7B is a bottom view of the rear portion of the housing, and FIG. The side view of a posterior part. The top view of the housing | casing main body of the electronic keyboard musical instrument which concerns on the example. FIG. 4A is a view for explaining a slide fixing means of the housing of the electronic keyboard instrument according to the embodiment, wherein FIG. 3A is an enlarged plan view of an upper surface of a right side plate portion of the housing main body shown in FIG. (b) is a sectional view taken along line GG of (a). It is a figure for explaining other examples of lower fixing means of a case back and a case main part, (a) is a schematic perspective view showing other examples of lower fixing means, and (b) is (a) FIG. 2 is a schematic perspective view showing an example of the patch-in engagement locking portion, and FIG. 2C is a cross-sectional view extracting and showing a state in which the engagement projection 63a is fitted into the hole 64 of the engagement projection 61. It is a figure for explaining another example of a slide fixation means for making a case rear part slide and fix to a case main part. FIG. 4B is an exploded perspective view, and FIG. 4B is a side view of a slide fixing protrusion provided on a rear portion of the housing.

Explanation of reference numerals

1 housing 2 housing main body (first housing part)
3 Rear part of housing (second housing part)
4 Roof plate part 5 Bottom plate part 6a, 6b Side plate part 7 Back plate part 8 Mouth stick part 9 Keyboard parts 21a, 21b, 21c Binding holding plates 31a-31d, 311a-311d Sliding fixing projections 35a-35d, 351a-351d Slide part

Claims (4)

An electronic keyboard instrument comprising a keyboard portion and a housing in which the keyboard portion is arranged,
The housing includes a first housing portion including a bottom plate portion on which the keyboard portion is placed, and a second housing portion including a roof plate portion and a back plate portion, and the first housing portion includes Configuring the housing by detachably attaching the second housing portion to the housing portion;
The second housing portion further includes a reinforcing member for connecting the roof plate portion and the back plate portion, and the second housing portion is attached to the first housing portion to form the housing. An electronic keyboard instrument, wherein the reinforcing member is coupled to the bottom plate portion when constructing a body. The electronic keyboard instrument according to claim 1, wherein an edge of the bottom plate is sandwiched between a lower end of the reinforcing member and a lower edge of the back plate. 3. The electronic keyboard musical instrument according to claim 2, wherein an edge of the bottom plate sandwiched between a lower end of the reinforcing member and a lower edge of the back plate is fixed by screws. The electronic keyboard instrument according to claim 2 or 3, wherein a cut groove is provided in a lower edge portion of the back plate portion.

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