JP2002345591A - Lifting type chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance functions which can secure a place where minor articles such as a musical note in a lifting type chair used for the performance of piano or the like. SOLUTION: A leg body 1 is fixed at four corners of a first rectangular frame body 2. A second rectangular frame body 4 is arranged at an upper part of the first frame body 2. A box-shaped minor article housing part 6 almost as thick as the second frame body 4 is arranged inside the second frame body 4. A seat plate 3 is fitted inside the second frame body 4 and a seat 3 is disposed on the minor article housing part 6. A lifting means 5 is mounted between the first and second frame bodies 2 and 4. A lower guide frame 51 of the lifting means 5 is fixed on the internal side of the first frame body 2 and an upper guide frame 53 of the lifting means 5 is fixed on the second frame body 4 between the second frame body 4 and the side of the minor article housing part 6. A screw 55 with an inverse thread is arranged at the position of the first frame body 4, a nut part 545 is moved by the operation of an operating element knob 56 and the second frame body 4 is lifted or lowered with X-shaped lifting legs 54 and 54.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting chair suitable for use with keyboard instruments such as pianos, organs, electronic pianos, and electronic organs.

[0002]

2. Description of the Related Art Conventionally, for a keyboard instrument such as a piano, an organ, an electronic piano, or an electronic organ, an elevating chair capable of raising and lowering a seat of a chair according to the age and physique of a player is suitable.

[0003]

By the way, when composing or arranging music, performing music instruction in a music classroom, or practicing, etc., a plurality of musical scores, music notes or writing utensils are required. It is convenient to keep these small items together beside the instrument.

Accordingly, an object of the present invention is to provide an elevating chair having an improved function of securing a place for placing small articles such as a musical score.

[0005]

According to a first aspect of the present invention, there is provided an elevating chair, comprising: a plurality of legs; a first frame connecting the plurality of legs; a seat plate; A second frame positioned above the first frame and holding the seat plate; and a second frame connected to the first frame and the second frame while the first frame is connected to the first frame.
Lifting means for moving up and down with respect to the frame body, and provided with an accessory compartment disposed in a fixed relationship with the second frame body below the seat plate and below the seat plate. It is characterized by.

According to the lifting chair of the first aspect, the second frame moves up and down on the first frame to adjust the height of the seat plate held by the second frame, that is, the sitting height. can do. Then, for example, by removing the seat plate from the second frame, small articles such as a musical score can be stored in the accessory compartment in the second frame.

According to a second aspect of the present invention, there is provided an elevating chair, comprising: a plurality of legs; a first frame connecting the plurality of legs; a seat plate; Located at the top,
A second frame for holding the seat plate, elevating means for vertically moving the second frame relative to the first frame while connecting the first frame and the second frame, and the seat plate And a small container portion disposed in a fixed relationship with the second frame inside the second frame, and the elevating means moves the first frame and the second frame together. It has an elevating leg connected, and the upper part of the elevating leg is disposed between the side surface of the accessory compartment and the inner surface of the second frame.

[0008] According to the lifting chair of the second aspect, the first aspect.
The same operation and effect as described above can be obtained, and furthermore, the upper portion of the elevating leg is disposed between the accessory compartment and the second frame,
The degree of freedom in designing the height (distance) of the second frame and the first frame in the vertical direction is increased.

According to a second aspect of the present invention, the elevating leg of the elevating means is an X-shaped elevating leg linking the first frame and the second frame, and a lower portion and an upper portion of the X-shaped elevating leg are horizontally oriented. , The second frame is raised by opening the lower part and the upper part of the X-type elevating leg horizontally, and the lower part of the X-type elevating leg is lowered. The portion linked to one frame may be configured to be opened and closed with a nut and a screw, and the screw and an operator for rotating the screw may be provided on the first frame. According to the elevating chair configured in this way,
Since the operation element is fixedly rotated at a fixed position in the vertical direction, the lifting operation can be easily performed.

The X-shaped lifting legs may be provided as a pair at the center between the first frame and the second frame, but may be provided as two pairs as in the embodiment. The second frame may be moved up and down by two pairs of X-shaped elevating legs by turning one screw with a reverse screw structure. According to the lifting chair configured as described above, the two pairs of X-shaped lifting legs can be made to perform mirror-target operations, and the part where the two pairs of X-shaped lifting legs are linked to the second frame body is also mirror-targeted. Since the structure and operation can be simplified, the second frame can be stably held with respect to the first frame at both the rising end and the falling end of the second frame.

In the lifting chair according to the first or second aspect, the first frame and the second frame may have substantially the same shape or the same shape in the spreading direction (planar direction). According to the lifting chair configured as described above, the appearance is improved.

The up-and-down chair according to claim 1 or 2, wherein the thickness of the accessory compartment in the up-down direction is determined by adjusting the thickness of the accessory box to the lower surface of the seat plate when the second frame is at the lower end. The gap may be set to be substantially the same as the gap with the upper surface of the body.
According to the lifting chair configured as described above, the space inside the second frame can be effectively used as a space for the accessory case.

According to a second aspect of the present invention, a flange is provided at an upper end of the accessory compartment, and a flange is provided at an upper portion of the lifting means, and the flange receives the seat plate. Is also good. According to the lifting chair configured as described above, downsizing can be achieved while having a multifunctional structure.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of a lifting chair according to an embodiment of the present invention, FIG. 2 is a side view of the lifting chair, FIG. 3 is a plan view of the lifting chair, and FIG. FIG. 5 is a side view of the lifting / lowering means, and FIG. 6 is a plan view of the lifting / lowering means. 1 corresponds to the AA section in FIG. 3, FIG. 2 corresponds to the BB section in FIG. 3, and FIG. 4 corresponds to the AA section in FIG. In each of the drawings, the right half of the drawing shows a state where the seat plate (second frame) is at the rising end, and the left half of the drawing shows a state where the seat plate is at the falling end. This chair is a chair on which a player sits when playing a keyboard instrument. In FIG. 3, the short direction is the front-back direction and the long direction is the left-right direction.

The lifting chair comprises four legs 1, a first frame 2 connecting the four legs 1, and a cushion 3 on the upper surface.
a, a second frame 4 that is located above the first frame 2 and holds the seat 3, a first frame 2 and a second frame 2.
Lifting means 5 for vertically moving the second frame 4 with respect to the first frame 2 while connecting the frame 4 to the first frame 2. An accessory compartment 6 is provided which is arranged in a fixed relationship with the second frame 4. The leg 1, the first frame 2, the seat plate 3 and the second frame 4 are made of wood, and the elevating means 5 is made of metal. These members are subjected to a predetermined coating treatment such as black. I have. The accessory compartment 6 is made of a synthetic resin such as black.

As shown in FIG. 3, the first frame 2 is connected and fixed to the ends of two long side plates 21A located at the front and rear and two short side plates 21B located at the left and right by corner fittings 22. It is formed. As shown in FIG. 3 in which a part of the second frame 4 is crushed, the corner fitting 22 is provided at the center inclined portion 2.
2a and fixed portions 22b, 2 opened 135 degrees on both sides thereof
2b, and the two fixing portions 22b, 22b are perpendicular to each other. An engagement claw 22b-1 (see FIG. 3) is formed at an end of the fixing portion 22b.
A and 21B are formed with engagement grooves 211 (see FIG. 1). The corner fitting 22 is engaged with the engaging claw 22b-1 in the engaging groove 211, and is fixed to the side plates 21A and 21B by screws 20a in the fixing portion 22b. Although the reference numerals are omitted for simplicity, the other corner fittings 22 have the same structure. Thus, the first frame 2 has a substantially rectangular shape with the left-right direction as the longitudinal direction.

The leg 1 has a substantially square horizontal cross section, and two end surfaces of the side plates 21A and 21B abut on two side surfaces of the leg 1 which form a right angle toward the inside of the elevating chair. Have been. The tip of the bolt 11 penetrating the leg 1 at an angle of 45 degrees with respect to the front, rear, left and right directions is the corner fitting 2.
The nut 12 is screwed to the tip of the bolt 11 from the side of the reinforcing plate 23 through the second inclined portion 22a and the reinforcing plate 23 applied to the second inclined portion 22a. The leg 1 is fixed to the first frame 2 by tightening the bolt 11 and the nut 12.

The second frame 4 is composed of two long side plates 41A located at the front and rear and two short side plates 41B located at the left and right.
Are formed by attaching tapered surfaces formed at the ends thereof at an angle of 45 degrees to each other, and secured by a hidden metal fitting 42. As a result, the second frame 4 has a rectangular shape whose longitudinal direction is the left-right direction. The inner edge of the upper surface of the second frame 4 has a stepped portion 43 which is depressed downward over the entire circumference.
The step 43 is fitted with the accessory storage section 6 and the seat plate 3 described later. The second frame 4 is slightly larger than the first frame 2, but has substantially the same rectangular shape in the direction in which the horizontal plane spreads. The first frame 2 and the second frame 2
The frame 4 may have the same size in the front, rear, left and right, that is, the same shape.

The lifting / lowering means 5 includes two lower guide frames 51, 51 provided in front and rear corresponding to the first frame 2, and right and left fixed frames 52, which fix both ends of the lower guide frames 51, 51, respectively. 52, and two upper guide frames 53, 53 attached to the front and rear corresponding to the second frame 4.
, Lower guide frames 51, 51 and upper guide frame 5
A pair of X-shaped elevating legs (elevating legs) 54, 54 provided side by side between the left and right and the lower guide frames 51, 51, and an elevating / lowering member disposed in parallel with the lower guide frames 51, 51. And a long screw 55 for operation. These lower guide frames 51, 51 and fixed frames 52, 5
2. Upper guide frames 53, 53, X-type lifting legs 54, 5
4. The screws 55 are each made of metal.

The front and rear lower guide frames 51, 5
1, a pair of members such as front and rear upper guide frames 53, 53, left and right fixed frames 52, 52, left and right X-shaped lifting legs 54, 54 have the same shape. The members will be described on behalf of any one as appropriate. Further, when distinguishing both members similar to each other, they are distinguished by front and rear, left and right and the like.

The lower guide frame 51 is provided with
In the convex portion 51a protruding in the shape of a U-shaped section inside the
Guide grooves 511 and 511 (see FIG. 4) extending in the longitudinal direction of the lower guide frame 51 are formed on the left and right at substantially the center in the vertical direction. Further, shaft holes 512 and 512 (see FIG. 4) are formed outside the guide grooves 511 and 511. Then, as shown in FIG.
1 is a flange portion 51 formed above and below the convex portion 51a.
b, 51c, it is fixed to the inside of the front and rear side plates 21A of the first frame 2 by screws 50a.

The upper guide frame 53 has substantially the same shape as that of the lower guide frame 51. A guide groove 531, 531 extending in the longitudinal direction is formed in a convex portion 53a projecting in a U-shaped cross section inside the elevating means 5. Shaft holes 532 and 532 are formed outside the guide grooves 531 and 531. Then, as shown in FIG. 1, the upper guide frame 53 is formed by a second screw 50b at flange portions 53b and 53c formed above and below the convex portion 53a.
The frame 4 is fixed inside the front and rear side plates 41A. As shown in FIG. 5, the upper guide frame 53 includes a horizontal flange portion 53d extending horizontally from an upper flange portion 53b.
d is in contact with the bottom surface of the step portion 43 of the front and rear side plates 41A of the second frame 4 and is screwed to the side plate 41A by screws 50c. Thereby, even if the second frame 4 is lifted up, for example, it is possible to prevent rattling at a portion such as the screw 50b.

The left and right X-type lifting legs 54, 54
A pair of X legs 54a, 54a, which support the center of the arms 541, 542 at the ends of the shaft 543, are provided in front and rear, respectively. As shown in FIG. The upper end of the arm 541 is supported by the guide hole 53 of the upper guide frame 53.
1 is slidably supported. The upper end of the arm 542 is supported by the shaft hole 532 of the upper guide frame 53, and the lower end of the arm 542 is slidably supported by the guide groove 511 of the lower guide frame 51.

The arms 54 of the opposed X legs 54a, 54a
2, 542 are fixed to both ends of a moving frame 544 disposed at right angles to the screw 55. Screw 55
Is supported at the center of the fixed frames 52, 52, and has one end penetrating through one side plate 21B of the first frame 2, and an operation knob 56 is attached to the end. The screw 55 has two screw portions 551 and 551 in the left-right direction from the center of the lifting / lowering means 5 (the center in the left-right direction of the lower guide frame 51). This screw part 551,5
51 are mutually reverse-threaded, and the moving frame 544
A nut 545 fixed to the center of the screw is screwed to the screw 551.

The accessory compartment 6 includes a bottom plate 6a and the bottom plate 6a.
A rectangular box is formed by the four side surfaces 6b rising from the periphery of the box. A flange 6 is provided around the side surface 6b.
The flange portion 6c is in contact with the bottom surface of the step portion 43 of the front, rear, left and right side plates 41A, 41B of the second frame 4. Note that the horizontal flange portion 53 of the upper guide frame 53 is provided on the step portion 43 of the front and rear side plates 41A, 41A.
Although d is provided, there is a level difference between where the horizontal flange portion 53 is provided and where it is not provided in the step portion 43 of the entire circumference, but the flange portion 6c of the accessory storage portion 6 has The thickness is set so as to be partially changed in accordance with the step.

The flange 6c is screwed by screws 60a at the steps 43 of the left and right side plates 41B of the second frame 4, and the accessory compartment 6 is fixed to the second frame 4. Further, the seat plate 3 is detachably fitted in the step portion 43 of the second frame 4. The head of the screw 50C for fixing the upper guide frame 53 protrudes from the step portion 43 of the front and rear side plates 41A. As shown in FIG. 3, the head of the screw 50c is formed on the flange portion 6c. Notch 6
1 and does not protrude from the upper surface of the flange portion 6c. Thus, when the seat plate 3 is fitted into the step portion 43, the seat plate 3 comes into contact with the flange portion 6c.

With the above configuration, the lifting / lowering means 5 operates as follows. Since the screw portions 551 and 551 of the screw 55 are reverse screws, when the operator knob 56 is turned, for example, clockwise, the nut portions 545 and 545 of the X legs 54a and 54a.
And the moving frames 544 and 544 are separated from each other and move outward in the left-right direction. Therefore, this moving frame 54
Arms 542 and 542 having lower ends fixed to 4,544
And shaft holes 512, 512 of the lower guide frames 51, 51.
The arms 541 and 541 that are pivotally supported by the arm rise in cooperation with each other, and the second frame plate 4 (and the accessory compartment 6 and the seat plate 3) rise. Conversely, when the operation knob 56 is turned to the left, the moving frames 544 and 544 move closer to each other and move toward the center in the left-right direction, and the arms 542 and 542 and the arms 541 and 541 frame cooperate and fall down. The frame 4 descends.

As shown in FIGS. 1 and 4, the second
The rising end of the frame 4 is regulated by the upper end of the arm 541 abutting on the laterally outer end of the guide groove 531 of the upper guide frame 53, and the falling end of the second frame 4 is the lower end of the arm 542. Part is the guide groove 5 of the lower guide frame 51
11 is regulated by abutting on the center side end portion in the left-right direction. The position of the lower end is set at a position where the bottom plate 6a of the accessory storage section 6 is slightly separated from the shaft 543.

As described above, the second frame plate 4 (and the accessory compartment 6 and the seat plate 3) can be moved up and down by the elevating means 5, and the height of the chair can be easily adjusted according to the player's age and physique. Can be adjusted. At this time, since the operation knob 6 is located at the position of the first frame 2 fixed in the up-down direction, it is easy to perform the elevating operation. Furthermore, since the accessory compartment 6 is provided, the seat plate 3 can be detached from the second frame 4 and the accessory compartment 6 can accommodate accessories such as a musical score.

The width of the accessory compartment 6 in the front-rear direction is the second
As shown in FIG. 2, there is a gap between the side surfaces 6b, 6b of the accessory compartment 6 and the inner surface of the side plate 41A of the second frame 4 in the front-rear direction. S is formed. The upper portions of the arms 541 and 542 of the X leg 54a and the upper guide frame 53 are disposed in the gap S. Accordingly, the upper portions of the arms 541 and 542 (the upper portions of the elevating legs) are disposed between the accessory compartment 6 and the second frame 4, so that the upper and lower portions of the second frame 4 and the first frame 2 are vertically moved. The degree of freedom in designing the height (distance) in the direction is increased.

The vertical thickness of the accessory compartment 6 is substantially the same as the gap between the lower surface of the seat plate 3 and the upper surface of the first frame 2 when the second frame 4 is at the lower end. It is set as follows. Therefore, the space inside the second frame 4 can be effectively used as a space for storing small articles.

Further, since the flange 6c of the accessory storage section 6 is disposed on the upper guide frame 53 of the elevating means 5, and the flange 6c is configured to receive the seat plate 3, the upper guide frame is provided. 53 and flange 6c are seat plate 3
, A multi-function can be achieved by providing the accessory storage section 6, and the size can be reduced.

In the above embodiment, a pair of left and right X
Since the mold lifting legs 54 are provided, the structure is extremely stable. However, one such X-shaped lifting leg may be provided at the center.

In the embodiment, the upper guide frame 53 of the elevating means 5 is fixed to the inside of the second frame 4 by the screw 50b. However, the screw 50b is omitted.
The flange 6c of the accessory case 6 and the upper guide frame 53
The horizontal flange portion 53d may be fastened to the step portion 43 of the second frame 4 with a screw. Thereby, the number of parts is reduced.

Further, in the embodiment, since the seat plate 3 is structured to be fitted into the step portion 43 of the second frame 4, the following effects can be obtained. For example, if a structure is adopted in which the seat plate is brought into contact with the upper surface of the second frame body so as to be openable and closable, a finger or the like may be pinched between the second frame body and the seat plate. There is no such thing.

In the embodiment, the seat plate 3 is connected to the second frame 4
If it is detached, the inside of the accessory storage section 6 will be in an open state, so that the inside is easy to see, and furthermore, storage and removal are easy.

Further, in the embodiment, the depth of the accessory compartment 6 is about the thickness of the second frame 4. That is, although the bottom plate 6a of the accessory case 6 is set at a position slightly separated from the shaft 543, the shaft 543 of the lifting / lowering means 5 is eliminated, and the screw 55 is disposed adjacent to the front and rear side plates 21A of the first frame 2. The space is provided inside the first frame 2 by arranging or using separate elevating means, and the depth of the accessory compartment 6 occupies the space inside the first frame 2 as well. Of depth.

Further, in the embodiment, the bottom plate 6a and the side surface 6b of the accessory storage section 6 are plate-shaped, but they may be net-shaped or mesh-shaped. Furthermore, the shape of the accessory compartment may be any shape, such as a wedge shape with a triangular (inverted triangle) bottom.

A thin wrench for fastening the bolt 11 and the nut 12 for fixing the leg 1 to the first frame 2 may be detachably attached to the back of the seat plate 3.
Thus, even if the fixing of the leg 1 is loosened, it can be easily repaired.

[0040]

According to the lifting chair of the first aspect, the height of the seat plate, that is, the sitting height can be adjusted, and accessories such as a musical score can be stored in the accessory compartment.

According to the lifting chair of the second aspect, the first aspect is as follows.
The same effect as described above can be obtained, and further, since the upper part of the elevating leg is disposed between the accessory compartment and the second frame, the second
The degree of freedom in designing the vertical height (distance) between the frame and the first frame is increased.

[Brief description of the drawings]

FIG. 1 is a front view of a lifting chair according to an embodiment of the present invention.

FIG. 2 is a side view of the lifting chair.

FIG. 3 is a plan view of the lifting chair.

FIG. 4 is a front view of the elevating means in the embodiment.

FIG. 5 is a side view of the elevating means.

FIG. 6 is a plan view of the elevating means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... leg, 2 ... 1st frame, 3 ... seat plate, 4 ... 2nd frame 4,
Reference numeral 5: elevating means, 6: accessory compartment, 6a: bottom plate, S: gap, 51: lower guide frame, 52: fixed frame, 5
3. Upper guide frame, 54 ... X-type elevating leg (elevating leg),
54a: X leg 55: screw, 56: operator knob, 545:
Nut part, screw part 551

Claims (2)

[Claims] 1. An elevating chair, comprising: a plurality of legs; a first frame connecting the plurality of legs; a seat plate; and an upper portion of the first frame body for holding the seat plate. Second
A frame; and elevating means for moving the second frame up and down with respect to the first frame while connecting the first frame and the second frame. An elevating chair provided in the second frame body with an accessory compartment disposed in a fixed relationship with the second frame body. 2. A lift-type chair, comprising: a plurality of legs; a first frame connecting the plurality of legs; a seat plate; and a top plate positioned above the first frame to hold the seat plate. Second
A frame; elevating means for vertically moving the second frame with respect to the first frame while connecting the first frame and the second frame; below the seat plate; An accessory compartment disposed in a fixed relationship with the second frame in the two frames, the elevating means having elevating legs connecting the first frame and the second frame, An elevating chair, wherein an upper portion of the elevating leg is disposed between a side surface of the accessory compartment and an inner surface of the second frame.