JP2003278720A - Slide type length adjusting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily adjust the whole length of first and second slide members and to prevent a loss of a member for fixing the first and second slide members. <P>SOLUTION: A carrying tool 16 for supporting a keyboard body 15 comprises a slide unit 19 for adjusting level of the keyboard body 15. The slide unit 19 is constituted comprising the first and second slide members 25, 26 that can relatively move in the length direction, and a stopper unit 28 held by the second slide member 25. The stopper unit 28 comprises an engagement member 47 selectively engaging with a first penetrating hole 37 for engagement, formed with a plurality of stages in the length direction of the first slide member 25, and an operation part 48 that releases, by a pressing operation, the engagement between the engagement member 47 and the first penetrating hole 37. By pressing operation of the operation part 48, the whole length of the first and second slide members 25, 26 is adjusted. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide-type length adjusting structure, and more particularly to a slide-type length adjusting structure capable of easily performing a length adjusting operation.

[0002]

2. Description of the Related Art As a known marching keyboard used for playing a drum and flute, for example, the one shown in FIG. 8 is known. This marching keyboard 70
A keyboard body 74 including a keyboard 71, speakers 72, etc.
And the player P while supporting the keyboard body 74.
And a carrying tool 75 attachable to the.
The carrying device 75 includes a slide unit 78 for adjusting the height position of the keyboard main body 74, and a pair of left and right shoulder hanging portions 8 attached to the upper portion of the slide unit 78.
It has 0 and 80. As shown in FIG. 9, the slide unit 78 includes first and second slide members 81 and 82 that are relatively movable in the height direction (vertical direction in the figure).
And a fixing bolt 84 for fixing the first and second slide members 81 and 82 at arbitrary relative height positions. In the first slide member 81 located on the upper side in FIG. 9, through holes 86, 86 are formed at upper and lower two positions in the figure, while on the second slide member 82 located on the lower side in FIG. Has screw holes 87 formed at six upper and lower positions in FIG. Slide unit 7 configured in this way
8 is a through hole 86, 86 two predetermined screw holes 8
7 and 87, fixing bolts 84 and 84 through holes 8
By screwing 6,6 and screw holes 87,87 by hand,
The relative movement of the first and second slide members 81 and 82 in the height direction is restricted. When adjusting the height position of the keyboard body 74, the screw holes 8
It suffices to change the use position of 7, 87, and thereby the overall height (overall length) of the first and second slide members 81, 82 can be changed.

[0003]

However, in such a carrying device 75, the two fixing bolts 84, 84 of the two fixing bolts 84, 84 are adjusted when the entire length of the first and second slide members 81, 82 is adjusted. There is an inconvenience that the attachment / detachment work is required and the length adjustment work becomes complicated. In particular, since the marching keyboard 70 is generally used in association with the marching of the player P, the fixing bolt 8 associated with the marching is performed.
In consideration of the looseness of No. 4, the tightening torque of the fixing bolt 84 has to be further increased, which makes the above inconvenience more serious. Further, when adjusting the overall length of the first and second slide members 81 and 82, the fixing bolts 84 must be temporarily removed from the slide members 81 and 82 side, whereby the fixing bolts 84 May be lost. Further, in order to be able to rotate the fixing bolts 84, 84 used at two places by hand, a fingertip access space is indispensable between the fixing bolts 84, 84, and the fixing bolts 84, 84 are required. However, there is also a disadvantage that a certain restriction is caused to bring them closer to each other, and as a result, the adjustment range of the entire length of the first and second slide members 81 and 82 becomes narrow.

By the way, the first and second slide members 8
A structure shown in FIG. 10 is also known as a structure for adjusting the total length of 1, 82. In this structure, with respect to the slide unit 78 shown in FIG. It is adapted to be inserted into any one of the through holes 93 formed at a plurality of positions in the direction.

However, in such a structure, since it is still fixed by the fixing bolt 84,
It is impossible to solve all of the above-mentioned various inconveniences associated with the attachment and detachment of the fixing bolt 84. Moreover, the guide pin 92
For the convenience of inserting and pulling out into and from the through hole 93, the first and second slide members 81 and 82 must have a structure that allows relative movement in the front-rear direction (X direction in the arrow in FIG. 10). The movement is restricted only by fixing the fixing bolt 84. However, since the front-back direction of the first and second slide members 81 and 82 is the traveling direction when the player P marches, the first and second slide members are fixed by fixing the fixing bolt 84 at only one place. There is also an inconvenience that backlash in the front-rear direction of 81 and 82 cannot be sufficiently suppressed.

[0006]

SUMMARY OF THE INVENTION The present invention has been devised in view of such an inconvenience, and an object thereof is to easily perform the work of adjusting the entire lengths of the first and second slide members. Another object of the present invention is to provide a slide-type length adjusting structure that can prevent loss of a member that fixes the first and second slide members.

Another object of the present invention is to provide a first and second device.
Another object of the present invention is to provide a slide type length adjusting structure capable of preventing rattling of the slide member.

[0008]

In order to achieve the above-mentioned object, the present invention provides first and second movable elements which are relatively movable in the longitudinal direction.
Slide member and a stopper unit held by one of these slide members, and the stopper unit is selectively attached to the engaged portion formed in a plurality of stages in the length direction of the other slide member. An engaging member that engages with,
An operating portion that can release the engagement between the engaging member and the engaged portion by a pressing operation is provided, and the entire length of the first and second slide members is adjusted by pressing the operating portion. Is adopted. With such a configuration, the engagement between the engaging member and the engaged portion can be released by the pressing operation, so that the first and second slide members are fixed by screwing them in with a fixing bolt or the like. First and second rather than structure
It is possible to easily adjust the entire length of the slide member. Further, since the stopper unit is held by either one of the first and second slide members, the risk of loss of the stopper unit can be avoided even when adjusting the overall length of the first and second slide members. can do.

[0009]

It is preferable that the stopper unit according to the present invention includes a biasing member that biases the engaging member in a direction to engage the engaged portion.
With this configuration, the engagement between the engagement member and the engaged portion can be performed more firmly, and the engagement state is unlikely to be inadvertently released. Further, even if there is a slight positional deviation between the engaging member and the engaged portion, it is possible to forcibly engage the engaging member and the engaged portion by urging the engaging member, The overall length of the first and second slide members can be adjusted more easily.

Further, it is also possible to adopt a constitution in which a regulating portion for regulating relative movement of the first and second slide members in a direction substantially orthogonal to the lengthwise direction is provided. This can effectively prevent rattling of the first and second slide members.

Further, it is preferable that a plurality of the engaging members are provided, and that the engaging members and the operating portion are arranged in a horizontal row substantially orthogonal to the length direction. With such a configuration, finer length adjustment is possible with the limited length of the first and second slide members.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In the following, "upper",
Unless stated otherwise, the positional or directional description such as “down”, “left”, “right”, “front”, “rear”, etc., is viewed face-to-face with the player in the state of FIG. 1 equipped with a marching keyboard. It is used for the position or direction in the case.

FIG. 1 is a schematic perspective view of a marching keyboard to which a slide type length adjusting structure according to the present invention is applied. In this figure, the marching keyboard 10 is configured to include a keyboard body 15 including a keyboard 12 and a speaker 13, and a carrying tool 16 that can be attached to the body of the player P while supporting the keyboard body 15. .

The keyboard body 15 has a well-known structure in which a speaker 13 can produce a sound through an amplifier unit (not shown) based on a key operation on the keyboard 12, as described in, for example, Japanese Utility Model Publication No. 06-050094. Has been done. The structure of the keyboard body 15 is not the gist of the present invention, and thus detailed description thereof is omitted here.

The carrying device 16 comprises a keyboard body 15
A support frame 17 for fixedly supporting the abdomen, a belly pad 18 fixed to the rear end side of the support frame 17 and located near the abdomen of the performer P, and abdominal pad center of the belly pad 18 A slide unit 19 that is fixed and adjusts the height of the support frame 17, and this slide unit 1
A pair of left and right shoulder-hanging parts 2 attached to the rear end side of the upper part of 9
0 and 20 are provided.

As shown in FIGS. 2 and 3, the slide unit 19 has a first slide member 25 in the shape of a rectangular tube having a substantially C-shaped end face to which the shoulder hanging portions 20, 20 are fixed.
And a second slide member 26, which is arranged inside the first slide member 25 and is provided so as to be relatively movable in the vertical direction, and the abdomen pad portion 18 is fixed to the lower end side, and which has a substantially U-shaped end face. A stopper unit 28 attached inside the second slide member 26 and a stopper holding means 30 for holding the stopper unit 28 inside the second slide member 26 are configured. The slide unit 19 includes the first and second slide members 2
By sliding 5 and 26 in the vertical direction, the overall length (overall vertical width) is changed, and the vertical separation distance between the support frame 17 and the shoulder hanging portion 20 can be adjusted.

The first slide member 25 is, for example,
It is made of aluminum alloy such as duralumin,
A front portion 32 having a substantially rectangular shape in front view, which is exposed to the front, and a pair of left and right side portions 3 extending rearward from both left and right ends of the front portion 32.
3, 33 and a pair of back portions 34, 34 extending inward from the rear end sides of these side portions 33, 33. The front portion 32 has a first operation through hole 36 in the shape of a slot hole that extends in the vertical direction at the substantially center, and an engaged portion symmetrically arranged on both left and right sides of the first operation through hole 36. First engaging through holes 37, 37 are formed. The first engaging through holes 37, 37 are not particularly limited, but are formed in a rectangular hole shape extending in the left-right direction, and are provided in six stages in the vertical direction. Each side part 33, 33 has a relative inter-surface distance set to be substantially the same as the lateral width of the second slide member 26, whereby the first and second slide members 25, 26 are combined. It is possible to regulate the relative movement in the left-right direction at the time. Also, the back 3
4, 34 are arranged so as to be substantially flush with each other, and the relative surface distance to the front portion 32 is set to be substantially the same as the front-rear width of the second slide member 26. The relative movement in the front-rear direction when the second slide members 25 and 26 are combined can be restricted. Therefore, the side portion 33 and the back portion 34 are formed by the first and second slide members 2
A restricting portion that restricts relative movement of 5, 26 in a direction substantially orthogonal to the length direction is configured. In addition, at least one of the side portion 33 and the back portion 34 may be set to the size described above to restrict the relative movement in the left-right direction or the front-back direction. In this case, performer P
It is more effective to restrict the relative movement in the front-rear direction, which is the traveling direction of.

The second slide member 26 is made of a material similar to that of the first slide member 25, but is not particularly limited, and is located in the front end side and has a generally rectangular front view. 39 and a pair of left and right side portions 40, 40 extending rearward from both left and right sides of the front portion 39. In the upper area of the front portion 39, a second operation through hole 42 in the shape of a square hole extending in the vertical direction at the substantially center, and symmetrically arranged on the left and right sides of the second operation through hole 42, and A pair of left and right second engaging through holes 43, 43 provided in the shape of a square hole extending in the direction are formed. In the lower region of the front portion 39, insertion holes 45, 45 for the round root bolt R for fixing the belly pad 18 are formed at two positions in the vertical direction.

As shown in FIG. 2, the stopper unit 28 has piece-like engaging members 47, 47 protruding forward from upper end portions on both left and right sides, and these engaging members 47, 47.
A bending piece-shaped operation portion 48 located between the
7, 47 and the operating portion 48 are integrally provided with the strip-shaped extension portion 50 that extends downward from the rear end side thereof, and the extension portion 50 is fixed to the rear surface side of the extension portion 50.
And a biasing member 51 formed of a leaf spring extending downward from the. The stopper unit 28 is
Although not particularly limited, it is mainly formed of a material harder than the first and second slide members 25 and 26, such as iron.

The engaging members 47, 47 are shown in FIGS.
As shown in FIG. 3, the first slide member 25 is formed so as to project in and out with respect to the second engagement through holes 43 formed in the second slide member 26. One of the engaging through holes 37, 37 is provided so as to be selectively engageable. The engaging members 47,
The upper surface of 47 is formed in the shape of an inclined surface that inclines slightly downward toward the tip (the left end in FIG. 4), and the engagement members 47, 47 draw an arc in the direction of arrow R in FIG. 4 as described later. While retracting, it is provided so as to avoid interference with the inner edge portions of the through holes 37 and 43.

As shown in FIGS. 5 and 6, the operating portion 48 has a base region 53 which projects forward from the upper end side of the extension portion 50 while inclining downward toward the front.
The base region 53 is constituted by a front end region 54 which is bent from the front end side and extends downward while inclining inward. In the operation portion 48, the base region 53 is inserted into the first and second operation through holes 36 and 42, and normally, the base region 53 and the tip region 54 project forward from the first operation through hole 36. And the base region 5 from this state.
When 3 is pressed, as will be described later, the operating portion 48 retreats together with the engaging members 47, 47 while drawing an arc in the direction of arrow R in FIG. 6, and the engaging members 47, 47 and the first engaging through-holes. The engagement with 37, 37 can be released.
At this time, the base region 53 is slightly bent forward to avoid interference with the inner edge portion of each of the second operation through holes 42. In this embodiment, the engaging member 4
7, 47 and the base region 53 are provided on the base end sides thereof at substantially the same vertical position, and the engaging members 47, 47 and the operating portion 4 are provided.
8 are arranged in a substantially horizontal row (a row in the left-right direction).

The stopper holding means 30 is shown in FIGS.
As shown in FIG. 7 and FIG. 7, a round bar-shaped pressing member 56 hung between the side portions 40 of the second slide member 26.
And the inner surface 39 of the front portion 39 below the pressing member 56.
The receiving member 57 is fixed to A. The pressing member 56 is provided so that the biasing member 51 can be sandwiched between the pressing member 56 and the inner surface 39A. The receiving member 57 is formed in a substantially crank shape in a side view, and forms a gap between a fixed portion 59 fixed in contact with the inner surface 39A and an upper surface of the fixed portion 59 and the inner surface 39A. Thus, the lower end side of the biasing member 51 is not fixed and is configured to be in surface contact with the tip portion 60. That is, the stopper holding means 30 can hold the stopper unit 28 in a state in which the upper and lower ends of the biasing member 51 are curved in a direction away from the inner surface 39A. Therefore, the urging member 51 urges the engaging members 47, 47 in the direction (front) in which they are engaged with the first engaging through holes 37, 37. On the other hand, the operation portion 48 is also normally urged forward by the urging member 51 and is thus moved to the first operation through hole 3
6 protrudes forward, but is pressed rearward against the biasing force applied to the operating portion 48, the engaging members 47, 47 and the operating portion 48 are rearward with the pressing member 56 as a fulcrum (FIG. 4, FIG.
It rotates in a bow shape in the direction of arrow R in FIG. 6) to disengage the first engaging through holes 37, 37 and the engaging members 47, 47 from each other.

As shown in FIGS. 4 to 6, the stopper unit 28 in this embodiment is not fixed to the second slide member 26 by adhesion or screws, and the engaging members 47, 47 and The stopper is held while allowing a slight movement with respect to the second slide member 26 within the range of the gap formed in each through hole 42, 43 on the side of the second slide member 26 into which the operation portion 48 is inserted. It is adapted to be held by means 30. However, the present invention is not limited to this,
The lower end side of the stopper unit 28 is connected to the second slide member 2
It can also be fixed to 6 with adhesive or screws. However, according to the present embodiment, it is possible to reduce the impact given to the engaging member 47 when the operating portion 48 is roughly operated, or when a large impact is given to the operating portion 48. It will be possible.

Next, the procedure for adjusting the height of the marching keyboard 10 will be described.

In the state shown in FIGS. 1 and 3, the engaging members 47,
47 is engaged with the lowermost side of the first engaging through holes 37, 37, and the vertical separation distance from the shoulder rest 20 to the keyboard 12 is maximized. From this state, when the separation distance is shortened, the marching keyboard 10 is installed on a predetermined stand (not shown) or the like, and the operating portion 48 is resisted against the biasing force of the biasing member 51 (see FIG. 2 etc.). By pressing
Engaging members 47, 47 provided integrally with the operating portion 48
Are retracted rearward from the first engaging through holes 37, 37. As a result, the engagement between the first engagement through holes 37, 37 and the engagement members 47, 47 is released, and the first and second engagement holes 37, 37 are released.
The relative movement of the slide members 25 and 26 in the vertical direction is allowed. Then, the first slide member 25 is slid downward with respect to the second slide member 26 while pressing the operation portion 48, and the vertical separation distance from the shoulder hanging portion 20 to the keyboard 12 becomes a desired distance. As described above, one of the other stages of the first engaging through holes 37, 37 is formed into the engaging members 47, 4
Set to 7. When the pressing operation of the operation portion 48 is released in this state, the urging force of the urging member 51 causes the engaging member 4 to move.
7, 47 and the operating portion 48 return to the front, and the engaging members 47,
47 is one of the above-mentioned first engaging through holes 37, 37
Engage with. This engagement state is maintained unless the operation portion 48 is pressed. When any one of the first engaging through holes 37, 37 is aligned with the engaging members 47, 47, even if their vertical positions are slightly displaced, the pressing operation of the operating portion 48 is released in that state. Even if the engaging members 47, 4
The urging force of 7 makes it possible to forcibly engage the first engaging through holes 37, 37 with the engaging members 47, 47. That is, even if the pressing operation of the operation portion 48 is released in a state in which the first and second slide members 25 and 26 are slidable in the vertical direction, the engagement members 47 and 47 are biased forward, The engaging members 47, 47 can be engaged with the first engaging through holes 37, 37 on the upper side or the lower side closest to the engaging members 47, 47. Here, the procedure for shortening the vertical separation distance from the shoulder rest 20 to the keyboard 12 has been described, but the same operation can be performed for increasing the separation distance.

Therefore, according to such an embodiment, the first and second slides are not structured to fasten the first and second slide members 25 and 26 with a fixing bolt or the like unlike the conventional structure. The effect that the total length of the members 25 and 26 can be easily adjusted is obtained. Moreover, since the stopper unit 28 is biased by the biasing member 51,
There is also an effect that the relative movement of the first and second slide members 25 and 26 in the vertical direction can be reliably regulated.

Further, since the stopper unit 28 is held by the second slide member 26, it is not required to remove the stopper unit 28 when adjusting the height of the first and second slide members 25, 26. Also, it is possible to effectively avoid the risk of loss of members due to the removal.

Further, since the stopper unit 28 is held in a state where the engaging member 47 and the operating portion 48 penetrate through the through holes 42 and 43 of the second slide member 26, the stopper unit 28 is carelessly moved from the slide unit 19. It can be hard to come off.

Although the first slide member 25 is provided with the first engaging through hole 37 and the second slide member 26 is made to hold the stopper unit 28 in the above embodiment, the present invention is not limited to this. Without being limited to this, the stopper unit 28 may be held on the first slide member 25 side, and the second slide member 26 may be provided with a through hole similar to the first engaging through hole 37.

Further, as the first slide member 25,
In addition to the above-described shape, it is possible to have an outer shape such as a substantially circular shape in plan view or an elliptical shape in plan view having an opening portion on the rear side.
Further, the second slide member 26 may be in the shape of a rectangular tube whose upper and lower ends are open.

Further, the first engaging through holes 37, 37 can be increased or decreased in the vertical direction so that the length can be adjusted at a pitch different from that of the above-described embodiment.

Further, the engaging members 47, 47 are not limited to the pieces in the illustrated example, but the first engaging through holes 37, 3 may be used.
As long as it can be engaged with 7, various shapes such as a block shape and a spherical shape can be adopted. Further, the number of the engaging members 47 may be one or three or more, and the engaging members 47 may be engaged with the first engaging through holes 37 at one or three or more positions. In addition, the engaging members 47, 47 and the operating portion 48
Although the and need not be arranged in a horizontal row, the engaging members 47, 4
By arranging 7 and the operating portion 48 in a horizontal row, it becomes possible to adjust the overall length of the first and second slide members 25 and 26 in more stages.

Further, the urging member 51 is not limited to the leaf spring described above, but any member such as a coil spring that can urge the engaging member 47 and the operating portion 48 can be used. good.

Further, although the present invention is applied to the marching keyboard 10 in the above-mentioned embodiment, the present invention is not limited to this, and the present invention can be applied to other musical instruments, carrying devices for articles, and the like. It can also be applied to a slide member that requires length adjustment in the left-right direction and the front-back direction.

[0035]

As described above, according to the present invention,
A stopper unit that is held by either one of the first and second slide members that are relatively movable in the length direction, and is selected as an engaged portion that is formed in multiple stages in the length direction of the other slide member. And an operating member capable of releasing the engagement between the engaging member and the engaged portion by a pressing operation. By pressing the operating portion, the first and second Since the entire length of the slide member is adjusted, the overall length of the first and second slide members can be adjusted more easily than in the conventional structure, and the first and second slide members can be adjusted. It is possible to prevent the member for fixing the slide member from being lost.

Further, since the urging member for urging the engaging member to the engaged portion is included, the engaging member and the engaged portion are engaged more firmly. It is possible,
Moreover, the overall length of the first and second slide members can be adjusted more easily.

Further, since the regulating portion for regulating the relative movement of the first and second slide members in the direction substantially orthogonal to the length direction is provided, rattling of the first and second slide members is effectively prevented. be able to.

Further, since a plurality of the engaging members are provided and the engaging members and the operating portion are arranged in a horizontal row substantially orthogonal to the length direction, the limited length of the first and second slide members is limited. Allows for finer length adjustment.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a marching keyboard to which a slide type length adjusting structure according to the present invention is applied.

FIG. 2 is an exploded perspective view of a main part of FIG.

FIG. 3 is a schematic front view of a slide unit.

4 is an enlarged cross-sectional view taken along the line AA of FIG.

5 is an enlarged cross-sectional view taken along the line BB of FIG.

6 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 7 is a schematic perspective view of a second slide member to which a slide unit is attached, viewed from the rear side.

FIG. 8 is a schematic perspective view of a marching keyboard according to a conventional example.

9 is an exploded perspective view of some of the constituent elements of FIG. 8. FIG.

FIG. 10 is an exploded perspective view similar to FIG. 9 according to another conventional example.

[Explanation of symbols]

25 ... 1st slide member, 26 ... 2nd slide member, 28 ... Stopper unit, 33 ... Side part (regulation part), 34 ... Back part (regulation part), 37 ...・ ・
First engaging through hole (engaged portion), 47 ... Engaging member, 48 ... Operating portion, 51 ... Energizing member

Claims (4)

[Claims] 1. A first and a second which are relatively movable in a length direction.
Slide member and a stopper unit held by one of these slide members, the stopper unit being selectively attached to the engaged portion formed in a plurality of stages in the length direction of the other slide member. And an operating portion capable of releasing the engagement between the engaging member and the engaged portion by a pressing operation, and by pressing the operating portion, the first and second A slide type length adjusting structure, wherein the entire length of a slide member is adjusted. 2. The slide-type length adjusting structure according to claim 1, wherein the stopper unit includes a biasing member that biases the engaging member in a direction in which the engaging member is engaged with the engaged portion. 3. The slide type length according to claim 1, further comprising a restriction portion for restricting relative movement of the first and second slide members in a direction substantially orthogonal to the length direction. Adjustment structure. 4. A plurality of the engaging members are provided, and the engaging members and the operating portion are arranged in a horizontal row substantially orthogonal to the length direction. Slide type length adjustment structure described.