JP5239403B2 - Electronic keyboard instrument - Google Patents

Description

  The present invention relates to an electronic keyboard musical instrument having a structure in which a musical instrument main body is efficiently assembled to a support.

2. Description of the Related Art Conventionally, there has been known an electronic keyboard instrument having a configuration in which a musical instrument main body having a keyboard and a support are separately formed as a unit, and the musical instrument main body is mounted and mounted on the support.
For example, in the electronic keyboard instrument described in Patent Document 1, the support is assembled by connecting the left and right legs in the horizontal direction. Left and right mounting guide members are provided in the opposite inner directions of the left and right legs. On the other hand, a pair of guided members are provided on the lower surface of the instrument main body corresponding to each mounting guide member. The above-described mounting structure of the mounting guide member and the guided member is to improve the appearance.

  During assembly, two workers lift the instrument body, insert it into the left and right legs of the support, place the lower surface of the instrument body on the mounting guide member, and the guided member becomes the mounting guide member. The instrument body is slid in the depth direction from the front so as to be engaged, and the guided member comes into contact with the stopper member for alignment. By fastening the bolt to a screw hole formed in the lower surface of the instrument main body through a hole provided in the mounting guide member, the instrument main body and the support are fixed.

However, since all the legs are positioned below and below the instrument main body, when the operator places the lower surface of the instrument main body on the mounting guide member, the hands get in the way and the operator Therefore, the mounting guide member and the guided member cannot be seen at all. Therefore, there is a risk that the operator's hand gets caught between the lower surface of the musical instrument main body and the mounting guide member, resulting in injury.
In order to reduce such a risk, and even if the instrument main body is mounted with a rough register, the above-described mounting guide member has been enlarged in order to smoothly align with the screwing position. . As a result, the cost became high.

On the other hand, in the electronic keyboard musical instrument described in Patent Document 2, hook-shaped members protrude from the left and right side surfaces of the musical instrument main body. On the other hand, a receiving member corresponding to the above-described hook-shaped member is provided on the inner side of the side plate that also serves as the leg portion of the support.
At the time of assembly, two workers lift the upper part of the instrument body part higher than the side plate, visually register it, and lower it downward, so that the bowl-shaped member is dropped into the receiving port of the receiving member and aligned. The Thereafter, the instrument body and the support are screwed together.

In this electronic keyboard device, the side plate of the support body is made to be the same height as the side surface of the instrument body part, so that the side plate covers the side surface of the instrument body part. is there.
However, the operator lifts the instrument main body as high as 1.3 to 1.4 m, which is hard work. Also, if the worker gets tired, an accident may occur in which the instrument body is dropped from a high position.
Japanese Patent Application Laid-Open No. 5-297865 (Japanese Patent No. 2745952) JP 2006-91747 A

  The present invention has been made to solve the above-described problems, and provides an electronic keyboard instrument that is safe, simple, and attractive to assemble in an electronic keyboard instrument having a structure in which an instrument body is assembled to a support. It is intended to do.

The present invention, in the invention according to claim 1, in an electronic keyboard instrument having a structure instrument main body is assembled to the support, the support is, the side plate of a pair is connected and fixed by a first connecting member And having a mounting member at an intermediate height position of the side plate, and having an engaging member and a second connecting member on the inner surface of the pair of side plates, which is above the mounting member. the instrument body portion outer width at the rear of the side surfaces is narrower than the inner width between the pair of side plates, have engaged member at the rear of the side surfaces, the instrument main body, Placed on the mounting member, with the gap between the rear part of the both side surfaces and the inner side surface of the pair of side plates, the rear parts of the both side surfaces are in the depth direction from the front side in the key longitudinal direction. It is inserted between a pair of side plates, and the engaging member and the engaged member are engaged. In particular assembled Ri before Symbol support good, after being aligned in the depth direction by the back plate is brought into contact with the second coupling member, to the support member by said second connecting member and the screw It is to be connected .
Therefore, the musical instrument main body can be placed on the placement member by lifting it up to an intermediate height position of the side plate. With the instrument main body placed, the rear part of both sides is inserted in the depth direction from the front, using the pair of side plates as indexes, and the instrument is engaged with the engaged member and the engaged member. The assembly of the main body to the support is completed.
By the engaging member and the engaged member, the alignment of the instrument main body in the keyboard arrangement direction is reliably performed. After the assembly is completed, the rear portions of both side surfaces of the musical instrument main body are hidden inside the side plate on the support side, so that the engaging member and the guide member are also difficult to see from the outside, so that the appearance of the electronic keyboard instrument is not impaired.

The above-described engaged member can be a guide member that engages the above-described engaging member so as to be linearly movable. In this case, when the musical instrument main body is inserted between the pair of side plates described above, the engaging member moves in a state of being engaged with the guide member, and therefore is guided by the guide member.
The guide member may have a locking position (stopper portion) that locks the engaging member. The engaging member moves to the locking position of the engaging member while being engaged with the guide member. As a result, the alignment accuracy in the depth direction is improved.
Moreover, when the engaging member engages with the engaged member, a structure may be provided in which the engaging member is press-fitted into the engaged member.
The above-described engagement between the engaging member and the engaged member has a function of positioning and temporarily fixing the electronic musical instrument main body in the depth direction. Therefore, it is desirable that the electronic musical instrument main body portion and the support body portion be fixed with screws or the like after the above-described assembly. However, when the engaging force between the engaging member and the engaged member described above is strong, there is no need for further fixing with a screw or the like.

According to the present invention, when assembling the musical instrument main body, it is easy to assemble because the alignment and temporary fixing of the keyboard in the arrangement direction are simple.
Since the engaging member and the engaged member are in a position where they are difficult to touch, the instrument main body can be safely and easily assembled to the support. Moreover, since the engaging member and the engaged member cannot be seen from the outside, there is an effect that the appearance is good. Since the engaging member and the engaged member do not need to be increased in shape, there is an effect that an extra manufacturing cost can be suppressed.

FIG. 1 is a first assembly diagram of an electronic keyboard instrument for explaining an embodiment of the present invention. The detailed configuration is not shown. Symbols in parentheses are attached to symbols indicating portions that cannot be seen from the outside.
This electronic keyboard musical instrument is manufactured by unitizing a large number of members including the musical instrument main body 1, and each unit is integrated using a number of coupling hardware and screws not shown.
In the figure, reference numeral 1 denotes an instrument body. Reference numeral 2 denotes a support, which is a base unit that supports the instrument body.

In the musical instrument main body 1, reference numeral 11 denotes a pair of left and right side plates. The side plates 11 are wooden side plates that are located on both the left and right sides of the keyboard surface and the operation panel and have a longer depth than the height. Reference numeral 12 denotes a pair of left and right inner plates, which are located at the rear of both side surfaces of the musical instrument main body 1 and have a height higher than the depth, but are hidden by a side plate 21 of the support 1 described later after assembly is completed. , Disappear from the outside.
13 is a mouth bar member, 14 is a front lid, 15 is a rear lid, 16 is an upper front plate, 17 is a top plate, 18 is an upper back plate, and 19 is a bottom plate, both of which are made of wood. Reference numeral 20 denotes a pair of left and right engaging members.

On the other hand, in the support 2, 21 is a wooden side plate that also serves as a rear leg. 22 is a wooden front leg, 23 is a horizontal member, and 24 is a through hole. Each is a pair of left and right. Reference numeral 25 denotes a pedal unit, 25a to 25c pedals having different functions, 26 a lower front plate, 27 a lower back plate, 28 a pair of left and right guide members, and 29 a pair of left and right coupling hardware.
The pair of side plates 21 are connected in the left-right direction (key arrangement direction on the keyboard surface) by side plate connecting members (the pedal unit 25, the lower front plate 26, the lower back plate 27, and the speaker box 41 shown in FIG. 2). It has become.
Further, the horizontal member 23 is installed between the side plate 21 and the upper surface of the front leg 22 at the intermediate height position of the side plate 21.

The horizontal member 23 is, for example, a structural material formed by processing a sheet metal (steel plate). In the illustrated example, each of the horizontal member 23 includes a first part having a front leg 22 and a rear part having a side plate 21. Mounting plate 23a and second mounting plate 23b are formed, and the left and right ones face each other inward. Both are processed so as to be positioned slightly higher than the construction surface of the horizontal member 23.
The musical instrument main body 1 is placed and fixed on the first mounting plate 23a and the second mounting plate 23b. The musical instrument main body 1 may be placed and fixed on the construction surface of the horizontal member 23, or may be attached to any of the side plate connecting members.
The side plate 21 is coupled to the front leg 22 by a through hole 24 at a height position close to the floor surface. The through hole 24 is a structural material having a U-shaped cross section formed by processing a sheet metal (steel plate), for example.

  The side plate 21 is recessed by forming a stepped surface 21b by cutting the inner side of the front end surface 21a in the depth direction in the upper half (on the horizontal member 23) coupled to the musical instrument main body 1 and forming a stepped surface 21b. It is. This notch has a step between the upper part (first receding front face 21c) and the lower part (second receding front face 21d), and the lower part recedes in the depth direction with respect to the upper part. The first receding front surface 21c is formed in the lower part, and the second receding front surface 21d is formed in the lower part. As described above, the side plate 21 has a shape in which unevenness is complicated both in the depth direction and in the key arrangement direction.

A shallow groove 21e is formed halfway in the depth direction at a lower position on the first receding front surface 21c (about half the height of the upper half of the side plate 21). The interval between the inner side surfaces 21f in the upper half of the left and right side plates 21 (hereinafter simply referred to as the interval in the key arrangement direction) is larger than the interval between the inner side surfaces in the lower half of the side plate 21 that cannot be seen in this figure. Is also wide.
A guide member 28 described later with reference to FIG. 3 is attached to the groove 21e described above.
Reference numeral 29 denotes a coupling hardware, which is a bent metal (L-shaped metal fitting) in the illustrated example, and is attached to the inner side surface 21e of the side plate, and the side plate 21 and the upper back plate 18 of the instrument main body 1 described later. This is for connecting the outside with screws. In order to prevent interference with the metal fitting 29, the upper back plate 18 is formed with a notch 18a.

On the other hand, in the musical instrument main body 1, the rear portions of the left and right side plates 11 are cut out, and the left and right inner plates 12 are fitted into each other. The uneven structure of the side plate 21 on the support 2 side is fitted to the unevenness of the side plate 11 and the inner plate 12. When the musical instrument main body 1 is combined with the support 2, the concave and convex surfaces are fitted together to form a firm coupling structure.
Compared with the case where the flat surfaces are in contact with each other without unevenness, when viewed from the front of the electronic keyboard instrument, the joint portion between the both side portions of the musical instrument main body 1 (side side plate 11 and upper front plate 16) and the side plate 21 of the support 2 Since the (step surface 21b) is not extended to the rear end (rear surface 21g) in the longitudinal direction of the key, the above-described gap of the joint portion is not conspicuous. As a result, it is possible to create a high-class and smart appearance.

Since the side plate 11 and the inner plate 12 are connected by the mouth bar member 13, the upper back plate 18, and the bottom plate 19, the musical instrument main body 1 has a box shape.
Engaging members 20 are attached to the outer surfaces of the left and right inner plates 12, respectively. The engaging member 20 is described later with reference to FIG. 3, for example, and engages with the guide member 28 attached to the side plate 21 of the support 2 described above.

The musical instrument main body 1 houses a keyboard unit 66 and an electronic circuit board 67 as shown in FIG. In the example shown in the figure, the lid (key cover) that covers the keyboard surface is composed of a front lid 14 and a rear lid 15. When the front lid 14 is lifted, the front lid 14 is pivoted and opened. Then, when the rear cover 15 is retracted below the upper front plate 16 toward the key back side, the keyboard surface and the operation panel surface in front of the keyboard surface are exposed.
The upper front plate 16 and the top plate 17 are integrally coupled to constitute the upper front unit 61, as will be described later with reference to FIG.

The inner surfaces of the left and right side plates 11 are on the same plane as the inner surfaces of the left and right inner plates 12, respectively. On the other hand, the outer surfaces of the left and right side plates 11 protrude from the outer surfaces of the left and right inner plates 12, respectively.
The above-described musical instrument main end 1 is placed and assembled on the above-described support 2.
Therefore, the horizontal width of the musical instrument main body 1 described above and the interval between the side plates 21 of the support body have the following relationship.

The distance w ₁₁ between the outer surfaces of the left and right side plates 11 coincides with the distance w _21b between the left and right step surfaces 21 b in the upper half of the side plate 21.
In contrast, the interval w ₁₂ of the left and right outside faces of the inner plate 12 is slightly narrower than the distance w _21f of the inner side surface 21f of the side plate 21 described above. Therefore, a slight gap (w _21f −w ₁₂ ) / 2 can be formed between the inner plate 12 and the inner side surface 21f. This gap is a gap w ₁ required for the engagement member 20 and the guide member 28 to be engaged as shown in FIG.
Left and right lateral width w ₁₈ of the upper back plate 18 is either equal to the outer spacing w ₁₂ of the inner plate 12, or may be close to the interval w _21f of the inner surface 21f of the halves on the side plate 21. However, the rear portions of the left and right side surfaces of the instrument main body 1 are inserted between the inner side surfaces 21f of the pair of side plates. Therefore, not only the distance w ₁₂ between the outer surfaces of the inner plate 12 but also the lateral width w ₁₈ of the upper back plate 18 is not only a width equal to or smaller than the interval w _21f between the inner surfaces 21 f, It is necessary to make the width so as not to interfere.

FIG. 2 is a second assembly diagram of the electronic keyboard instrument for explaining one embodiment of the present invention. In the figure, the same parts as those in FIG.
FIG. 2A is a right side view of the instrument main body 1. The side plate 11, the inner plate 12, and the engaging member 20 are visible on the right side.
Reference numeral 31 denotes a lower back plate fixing block which is provided at the center in the key arrangement direction and is connected to the lower back plate 27 on the support 2 side by screws. Reference numeral 32 denotes an input / output terminal box which is attached to the lower surface of the bottom plate 19 and is provided with a MIDI (Musical Instrument Digital Interface) input / output terminal, an audio input / output terminal, and the like. Reference numeral 33 denotes a cushioning material that is attached to the upper surface 11a of the left and right side plates and contacts the lower surface 16d of the upper front plate.

FIG. 2B is a right side view illustrating the support 2 with the right side plate 21 and the lower back plate 27 removed. The left side plate 21, the coupling hardware 29, and the guide member 28 are visible. 26a, 26b is a plate mounting block formed in the upper 26c ₁ and lower 26c ₂ of the right and left rear end face 26c of the lower front plate 26, against the serve folding hardware (L bracket), the side plates of the left and right lower front plate 26 21 is fastened with screws.
Reference numeral 41 denotes left and right speaker boxes, in which speakers (not shown) are built, the opening surface of the speaker faces the lower front plate 26, and a musical sound is emitted through the speaker net of the lower front plate 26. Reference numeral 42 denotes an outlet box which is mounted on the right speaker box 41 and accommodates an auxiliary output terminal (AUX.OUT) for an external speaker. Reference numeral 43 denotes a non-slip member attached to the lower surfaces of the left and right front legs 22 and the left and right side plates 21.

The assembly operator places the bottom plate 19 of the musical instrument main body 1 shown in FIG. 2A on the mounting member, in the illustrated example, the mounting plates 23a and 23b of the horizontal member, The rear portion of the plate 12 is inserted into the left and right side plates 21 of the support 2 shown in FIG. 2B, and moved in the depth direction from the front side in the key longitudinal direction. When the instrument main body 1 approaches the substantially correct fixing position in the depth direction, the engaging member 20 engages with the guide member 28 and moves in the engaged state. That is, the guide member 28 guides the linear sliding movement of the musical instrument main body 1.
Then, the musical instrument main body 1 is adjusted to the correct fixing position. In addition, when the guide member 28 is provided with a locking portion, the movement in the depth direction is locked very close to the normal fixing position.
The instrument main body 1 is supported by the support 2 by fastening with four screws through the fastening holes 23c and 23d from below the first mounting plate 23a and the second mounting plate 23b of the left and right horizontal members. (See FIG. 1).

FIG. 2C is a right side view when the assembly of the electronic keyboard instrument is completed. In the figure, the same parts as those in FIG.
When the musical instrument main body 1 is assembled to the support 2, each part of the musical instrument main body 1 and each part of the support 2 have the following joining relationship.
The front surface 16 a of the upper front plate of the instrument body 1 coincides with the front end surface 21 a of the side plate of the support 2. The left and right ends of the side surface 16b and the rear surface 16c of the upper front plate are in contact with the step surface 21b and the first receding front surface 21c of the side plate, respectively.
The rear surface 11b of the side plate of the instrument body 1 is close to or abuts on the second receding front surface 21d of the side plate of the support 2. The rear surface 18b of the upper back plate 18 of the instrument body 1 substantially coincides with the rear surface 21g of the side plate of the support 2. The left and right ends of the lower surface 17 a of the top plate of the instrument body 1 abut against the upper surface 21 h of the side plate of the support 2.

  In the illustrated example, in order to assemble the musical instrument main body 1 to the support 2, a pair of left and right engaging members 20 and a pair of guide members 28 that engage with the pair of engaging members 20 so as to be linearly movable are provided. ing. The engaging member 20 is attached to the rear portion of both side surfaces of the musical instrument main body 1, in the illustrated example, to the outer surface of the inner plate 11. On the other hand, the guide member 28 is attached to the inner side surface 21 f of the side plate 21 in the support 2.

FIG. 3 is an explanatory view showing an example of the engaging member 20 and the guide member 28 used in the assembly shown in FIGS. 3A is a plan view of the engaging member, FIG. 3B is a left side view of the engaging member, FIG. 3D is a right side view of the guide member, and FIG. 3E is a plan view of the guide member. FIG.
FIG. 3C is a side view showing a state in which the engaging member 20 is locked to the guide member 28. FIG. 1 corresponds to a plan view in a state in which the top plate 17 is removed. In the figure, the same parts as those in FIG.

3 (a) and 3 (b), the illustrated engagement member 20 includes a head 20a, a neck 20b, a pedestal 20c, and a screw 20d, and has a pin-like shape having a circular cross section with different diameters. It is a metal fitting. The diameter of the head 20a d _a, a diameter d _b of the neck 20b, the diameter of the pedestal portion 20c and d _c, the relation of _{d b <d a ≦ d c} .
The engaging member 20 is fixed to the outer surface of the inner plate 12 with a thin plate 51 interposed therebetween. The backing plate 51 is also fixed to the inner plate 12 with staples 52. The backing plate 51 is not an essential member. However, the protrusion amount of the engagement member 20 protruding from the outer surface of the inner plate 12 can be adjusted by the thickness of the contact plate 51.

The engagement member 20 described above slides (slides) linearly with respect to the guide member 28 while maintaining the engagement state with the guide member 28. Therefore, the engaging member 20 can also be called a slider, and the guide member 28 can also be called a slide guide.
3D and 3E, the illustrated guide member 28 is obtained by bending a long plate body long in the longitudinal direction of the key (vertical direction in the drawing) by press working. Both ends are attachment portions 28a and 28e, and are attached to grooves 21e formed on the inner side surface 21f of the side plate 21 by screws 53.

The central flat plate portion 28c rises and protrudes from the step portions 28b and 28d adjacent to the mounting portions 28a and 28e. An engagement hole 28f having a long hole shape is formed in the longitudinal direction of the key from the stepped portion 28b located on the front side of the electronic keyboard instrument to the depth side of the central flat plate portion 28c.
The engaging hole 28f is in the rising position of the step portion 28b of the mounting portion 28a is wider in width d _e, next gradually narrower as it approaches the central flat portion 28c, the central plate portion 28c in substantially constant width d _f .

However, the outer peripheral surface 28g of the engagement hole 28f is gradually narrowed toward the hole as it gets closer to the step part 28d on the depth side, and becomes lower than the height of the central flat plate part 28c. The engagement hole 28f ends as a semicircular outer periphery in front of the step portion 28d.
The widths d _e and d _f of the engagement holes and the diameters of the head 20a and the neck 20b of the engagement member have a relationship of d _b <d _f <d _a <d _e . That is, the width d _f of the central flat portion 28c of the engagement hole 28f, but narrow diameter _{d a} Yomori head 20a of the engaging member 20, the width d _e at the step portion 28b of the engaging hole 28f, It is wider than the head 20a of the engaging member 20.

  When the musical instrument main body 1 is assembled to the support 2 and the musical instrument main body 1 is moved in the depth direction from the front side, the engaging member 20 approaches the guide member 28 from the direction of the stepped portion 28b on the front side. When the position of the step portion 28b is reached, the head portion 20a and the neck portion 20b of the engagement member 20 are inserted into the wide portion of the engagement hole 28f. Subsequently, it is inserted until it reaches the vicinity of the end of the engagement hole, and the state shown in FIG.

As described above, the outer peripheral surface 28g of the engagement hole 28f is constricted toward the rear inward of the hole. The inner surface 21f of the side plate in the support 2 and the outer surface of the inner plate 12 in the musical instrument main body 1 so that the lower surface (neck portion 20b side) of the head 20a of the engagement member interferes with the outer peripheral surface 28g of the engagement hole. keep designing interval w ₁ (see FIG. 3 (c)) with.
Due to the interference described above, the lower surface of the head 20a of the engaging member is press-fitted while pressing the outer peripheral surface 28g of the engaging hole. As a result, a biasing force that attracts the inner plate 12 of the musical instrument main body 1 to the side plate 21 of the support 2 is generated. Since this urging force is generated in the left and right side plates 21, the coupling relationship between the musical instrument main body 1 and the support body 2 becomes strong, and it is difficult to move even in the longitudinal direction of the key due to a large frictional force.

In the longitudinal direction of the key, the engagement member 20 is locked to move at the end of the engagement hole, so that the alignment is performed in the depth direction. The musical instrument main body 1 and the support 2 are fixed by fastening using screws after being aligned.
The guide member 28 is not necessarily required to have a function of locking and moving the key in the longitudinal direction. Therefore, the engagement hole 28f may extend to the step portion 28d in the depth direction. Further, the alignment in the depth direction can also be performed by the joint hardware 29 or the like.

As described with reference to FIG. 1, the horizontal width w ₁₈ of the upper back plate ₁₈ is set to the inner side surface 21f of the side plate so that the left and right end portions of the upper back plate 18 do not interfere with the guide member 28 during assembly. The interval w _21f is narrower. Therefore, even after the assembly of the electronic keyboard instrument is completed, the gap w ₁ shown in FIG. 3C can be seen from the back side of the electronic keyboard instrument, but the influence is small because it can be seen from the back side. .
However, if the depth w ₂ of the groove 21e is made deeper than the depth shown in FIG. 3 (c) so that the central flat plate portion 28c of the guide member does not protrude from the inner side surface 21f, Since the width can be made equal to the interval between the inner side surfaces 21f of the side plates, the gap is not visible from the back side. Accordingly, the engagement member 20 may change the protruding length so as to engage with the guide member 28, or the left and right inner plates 12 may be brought closer to the inner side surface 21f of the left and right side plates.

FIG. 4 is a right side view for explaining a detachable state of the front upper unit 61 in the musical instrument main body 1 shown in FIGS. In the figure, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.
The front upper unit 61 is a unit in which the upper front plate 16 and the top plate 17 are coupled at right angles with a coupling hardware (not shown). The front upper unit 61 facilitates maintenance of the instrument main body 1 by allowing easy attachment / detachment even after the electronic keyboard instrument is assembled.

An engagement member 64 and a guide member 63 are used to attach the front upper unit 61 to the upper ends of the left and right inner plates 12 in the instrument main body 1. These are members similar to the engaging member 20 and the guide member 28 shown in FIG.
A pair of engaging members 64 are attached to the left and right ends of the lower surface 17a of the top plate. On the other hand, a fixed block 62 is attached in the vicinity of the upper end on the inner surface side of the pair of left and right inner plates 21, and a guide member 63 is attached to the upper surface of the fixed block 62. In the illustrated example, the central flat plate portion (corresponding to the central flat plate portion 28 c in FIG. 3) of the guide member 63 is at a height substantially equal to the upper surface of the inner plate 12.
By moving the front upper unit 61 in the depth direction from the front, the engaging member 64 is engaged with the guide member 63 and is aligned by being locked.

On the other hand, at the lower part of the rear surface 16c of the upper front plate 16, one end of a spacer fitting, which is referred to as a central stay 65 in this specification, is screwed at several places in the key arrangement direction.
The center stay 65 shown in the figure forms a mounting surface at the long end of the wide L-shaped bracket, forms a threaded hole in the mounting surface on the upper front plate 16 side, and is threaded on the mounting surface on the upper back plate 18 side. A hole is formed.

In the attached state of the upper front plate 16, the engaging member 64 is engaged and aligned with the guide member 63, and the other end of the center stay 65 is fastened to the upper back plate 18 with a screw 53.
The instrument main body 1 accommodates a keyboard unit 66 including a keyboard frame, a key, a key operation (action) mechanism, and the like. An electronic circuit board 67 is accommodated behind the electronic circuit board 67. When the electronic circuit board 67 is inspected, the front upper unit 61 is removed.
First, when the screw 53 that fastens the central stay 65 and the upper back plate 18 is removed and the front upper unit 61 is pulled out to the front side, the engaging member 64 is engaged with the engaging hole (28f in FIG. 3). Is equivalent).

On the contrary, to attach the front upper unit 61, when the top plate lower surface 17a is placed on the upper surface 21h of the side plate and the upper surface of the inner plate 12, and moved in the depth direction, the neck of the engaging member 64 (shown in FIG. 3). The neck portion 20b of the engaging member is inserted into the engaging hole of the guide member 63 (corresponding to the engaging hole 28f in the guide member 28 shown in FIG. 3).
Since the outer peripheral surface of the engagement hole is attracted to each other, the top plate 17 and the upper surface of the inner plate 12 are firmly coupled. The left and right end surfaces 16b of the upper front plate 16 are inserted inside the front end surfaces 21a of the left and right side plates of the support 2 and are in contact with the stepped surface 21b, and the rear surface 16c of the upper front plate is connected to the front surface of the inner plate 12 and the side plates. It abuts on the first receding front surface 21c. Therefore, in the illustrated example, the depth direction of the front upper unit 61 is regulated even if the guide member 63 has no locking portion. Finally, the central stay 65 and the upper back plate 18 are fastened with screws 53.

In the above description, the pin-shaped projections are the engaging members 20 and 64 and the bent plate material having the engaging holes are the guide members 28 and 63. However, the engaging member and the guide member are relative to each other. It is. Therefore, the pin-shaped protrusions may be referred to as guide members, and the bent plate material having the engagement holes may be referred to as engagement members.
In the above description, the engaging member is attached to the moving side and the guide member is attached to the fixed side, but conversely, the guide member may be attached to the moving side and the engaging member may be attached to the fixed side.

Further, the engaging member and the guide member are not limited to those shown in the figure.
The guide members 28 and 63 described above have a function of guiding the movement of the engaging members 20 and 64. Instead of the guide members 28 and 63, the instrument main body 1 can be used even if a simple engaged member that does not have a guiding function, for example, the guide member 28 having a short engagement hole 28f is used. Temporary fixing and positioning when assembling to the support 2 are possible.

It is the 1st assembly drawing of the electronic keyboard musical instrument for demonstrating one Embodiment of this invention. It is a 2nd assembly drawing of the electronic keyboard musical instrument for demonstrating one Embodiment of this invention. It is explanatory drawing which shows an example of the engaging member and guide member which are used for the assembly shown in FIG. 1, FIG. It is a right view explaining the removal state of the front upper unit in the musical instrument main body shown in FIGS.

Explanation of symbols

1 ... the end of the instrument, 2 ... the support,
DESCRIPTION OF SYMBOLS 11 ... Side plate 11a ... Upper surface, 11b ... Rear surface, 12 ... Side plate, 13 ... Mouth bar member, 14 ... Front lid, 15 ... Rear lid, 16 ... Upper front plate, 16a ... Front surface, 16b ... Side surface, 16c ... Rear surface, 16d ... lower surface, 17 ... top plate, 17a ... lower surface, 18 ... upper back plate, 18a ... notch, 18b ... rear surface, 19 ... bottom plate, 20 ... engaging member, 20a ... head, 20b ... neck, 20c ... Pedestal part, 20d ... screw part,
21 ... side plate, 21a ... front end face, 21b ... step surface, 21c ... first receding front face, 21d ... second receding front face, 21e ... groove, 21f ... inner face, 21g ... rear face, 21h ... top face, 22 ... front leg 23 ... Horizontal members, 23a, 23b ... Mounting plates, 23c, 23d ... Fastening holes, 24 ... Penetrating holes, 25 ... Pedal units, 26 ... Lower front plates, 26a, 26b ... Side plate mounting blocks, 26c ... Left and right rear end faces, 26c ₁ ... left and right rear end face upper parts, 26c ₂ ... left and right rear end face lower parts, 27 ... lower back plate, 28 ... guide member, 28a ... mounting part, 28b ... step part, 28c ... central flat plate part, 28d ... step Part, 28e ... mounting part, 28f ... engagement hole, 28g ... outer peripheral surface, 29 ... coupling hardware,
31 ... Lower back plate fixing block, 32 ... Input / output terminal box, 33 ... Buffer material, 41 ... Speaker box, 42 ... Outlet box, 43 ... Non-slip member, 51 ... Slip plate, 52 ... Staple, 53 ... Screw,
61 ... Front upper unit, 62 ... Fixed block, 63 ... Guide member, 64 ... Engagement member, 65 ... Central stay, 66 ... Keyboard unit, 67 ... Electronic circuit board

Claims (1)

In an electronic keyboard instrument with a structure in which the instrument body is assembled to the support,
The support plates of a pair are connected and fixed by a first connecting member, and having a mounting member to the intermediate height position of the side plate, and above the front placing member, the pair of side plates It has an engaging member and a second connecting member on the inner surface ,
The instrument body portion outer width at the rear of the side surfaces is narrower than the inner width between the pair of side plates, it has engaged member at the rear of the side surfaces,
The musical instrument main body is placed on the mounting member, and in a state where there is a gap between the rear portions of the both side surfaces and the inner surfaces of the pair of side plates , the rear portion of both sides is inserted between the pair of side plates, the engaging member and the assembled on by Ri before Symbol support to the engaged member is engaged, the back plate is the second After being aligned in the depth direction by contacting the connecting member, the second connecting member and the screw are connected to the support body.
An electronic keyboard instrument characterized by this.

Images