JPH0655851U - Rotating stool - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding a rotary stool in which a stool is arranged in a direction orthogonal to the traveling direction of a vehicle, the gap between the stool and the wall surface can be narrowed as much as possible, and smooth rotation is achieved. The purpose is to provide a rotating stool that can be turned. A center hinge bracket 28 that rotatably supports an underframe 21 of a sitting portion, and a leg stand 23 that extends in a direction orthogonal to a wall surface 25 and is fixed to a floor 24 side.
And a first linear guide 26 provided along the longitudinal direction of the leg stand 23, with which the center hinge bracket 28 slidably engages, and a longitudinal side portion of the underframe 21 provided with the center hinge bracket 28. An arc guide 29 centered on,
A pin 32 provided on a side portion orthogonal to the longitudinal direction of the pedestal 23 and engaging with the arc guide 29; a second linear guide 31 provided on a side portion orthogonal to the longitudinal direction of the pedestal 23; The second linear guide 31 provided on one side of the frame 21
And a second slider 34 that is provided on the other side portion of the underframe 21 and that engages with the second linear guide 31.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary stool, and more particularly, to a rotary stool in which a stool portion is arranged in a direction orthogonal to a traveling direction of a vehicle.

[0002]

[Prior art]

 An example of such a rotary stool is disclosed in Japanese Patent Application No. 56-128235. 3 is a front view of the rotary seat disclosed in Japanese Patent Application No. 56-128235, FIG. 4 is a partial cross-sectional side view of FIG. 3, FIG. 5 is a top view of FIG. 3, and FIG. 6 is a pedestal of FIG. It is a top view.

In these figures, 1 is a pedestal fixed to the floor 2, and 3 is a set of linear guides provided on the pedestal 1 in a direction orthogonal to the wall surface 4. A guide groove 5 is provided on the pedestal 1 in parallel with the wall surface 4. Reference numeral 6 is a slide frame slidably engaged with the linear guide 3. A hole 6a is formed on the slide frame 6, and an intermediate portion of a pin 8 provided on the bottom surface of the seat 7 toward the floor 2 is rotatably engaged with the hole 6a. .

A pin 10 slidably engaged with the guide groove 5 of the pedestal 1 via a crank arm 9 is attached to the lower end of the pin 8. Next, the operation of the above configuration will be described. When the stool in the state shown in FIG. 3 is reversed (rotated by 180 °), the lock mechanism is released and the stool portion 7 is rotated. Then, the seat portion 7 rotates, and the pin 10 moves along the guide groove 5 by the crank arm 9, and the seat portion 7 is guided by the linear guide 3 and linearly moves away from the wall surface 4. When the rotation angle exceeds 90 °, this time, it is guided in the direction of approaching the wall surface 4 and the reversal ends.

According to such a configuration, when the stool is reversed, the stool portion 7 moves to the wall surface 4 (passage side) while rotating, so that the interval between the stool and the wall surface 4 can be narrowed.

[0006]

[Problems to be solved by the device]

 However, the configuration of the rotary seat having the above configuration has the following problems. The stool section 7 makes a rotational movement around a pin 8 that moves away from / approaches the wall surface 4, but since the pin 8 is located at the substantial center of the stool section 7, as shown in FIG. The radius of gyration R is large, and a gap with the wall surface 4 is necessary to some extent.

When the seat portion 7 rotates by 90 °, the crank arm 9 is at a so-called dead point, which is orthogonal to the guide groove 5, so that the rotation thereafter may not be performed smoothly.

The present invention has been made in view of the above problems, and an object thereof is to provide a rotating stool capable of narrowing the gap between the stool and the wall surface as much as possible and capable of smooth rotation. Especially.

[0009]

[Means for Solving the Problems]

 The invention according to claim 1 which solves the above-mentioned problems, is a center hinge bracket that rotatably supports an underframe of a sitting portion, and a leg stand that extends in the direction orthogonal to the wall surface and is fixed to the floor side. And a first linear guide that is provided along the longitudinal direction of the pedestal and that slidably engages the center hinge bracket; and a center hinge bracket that is provided on a longitudinal side portion of the underframe. A circular arc guide serving as a center, a pin provided on a side portion orthogonal to the longitudinal direction of the pedestal and engaging with the circular arc guide, and a second portion provided on a side portion orthogonal to the longitudinal direction of the pedestal. A linear guide, a first slider that is provided on one side of the underframe and that engages with the second linear guide, and a second slider that is provided on the other side of the underframe. Consists of a second slider that engages the guide

According to a second aspect of the present invention, there is provided a center hinge bracket for rotatably supporting the underframe of the seat portion, a leg stand extending in a direction orthogonal to the wall surface and fixed to the floor side. A linear guide that is provided along the longitudinal direction of the footrest and that slidably engages the center hinge bracket; and a linear guide that is provided on the longitudinal side of the underframe and centered on the center hinge bracket. No. 1 arc guide and a side portion orthogonal to the longitudinal direction of the pedestal, and a pin engaging with the first arc guide, and a side portion orthogonal to the longitudinal direction of the pedestal, A second circular arc guide having a convex circular arc on the side of the center hinge bracket; a first slider provided on one side of the underframe and engaging with the second circular arc guide; The second circle provided on the other side of the underframe And a second slider that engages the arc guide.

[0011]

[Action]

 In the rotary stool of the invention according to claim 1, when the stool is rotated, first, the first slider engages with the second linear guide, and the underframe is pushed out in the direction opposite to the wall surface (passage side). And The underframe is slidably engaged with the first linear guide through the center hinge bracket, so that the underframe is on the passage side while the first slider is engaged with the second linear guide. , And the stool rotates eccentrically.

When the first slider is disengaged from the second linear guide, the sitting portion is rotated while the circular arc guide is engaged with the pin. When the arc guide is disengaged from the pin, the second slider is engaged with the second linear guide this time, and this time, the underframe is rotated while being pulled back toward the wall surface, and the reversal is completed.

In the rotary seat according to the second aspect of the present invention, when the seat is to be rotated, the first slider first engages with the second arc guide, and the underframe moves in the direction opposite to the wall surface (passage). Side). Since the underframe is slidably engaged with the linear guide via the center hinge bracket, the underframe moves toward the passage while the first slider is engaged with the second arc guide. Then, the seat part rotates in an eccentric state.

When the first slider is disengaged from the second circular arc guide, the seat portion is rotated while the first circular arc guide is engaged with the pin. When the first circular arc guide is disengaged from the pin, the second slider is engaged with the second circular arc guide this time, and this time, the underframe is rotated while being pulled back toward the wall surface, and the reversal is completed.

In the present invention, since the second arc guide is convex in the direction opposite to the wall surface, the pushing amount of the seating portion in the passage direction is large as compared with the invention according to claim 1.

[0016]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the first embodiment of the present invention. The stool of this embodiment is a two-seater stool used in a train.

In the figure, reference numeral 21 is an underframe of a seat portion. A center hinge 22 is fixed to a substantially central portion of the underframe 21. On the other hand, 23 is a foot stand fixed to the floor 24. A slide rail 26 as a first linear guide is provided at the center of the leg stand 23 in the longitudinal direction (direction orthogonal to the wall surface 25). A center hinge bracket 28 for rotatably supporting the center hinge 22 is slidably engaged with the slide rail 26 via a slide block 27. Therefore, the seat portion (underframe 21) can be moved away from / approached to the wall surface 25. An arc guide 29 centering on the center hinge 22 is provided on the longitudinal side of the underframe 21.

Further, a roller guide 31 as a second linear guide is provided on one side portion (on the wall surface 25 side in this embodiment) of the foot stand 23. A notch 31a is formed in a substantially middle portion of the roller guide 31, and a pin 32 that engages with the arc guide 29 is provided in the notch 31a.

A first slider 33 and a second slider 34 are provided on both sides of the underframe 21 with the arc guide 29 interposed therebetween. The first and second sliders 33 and 34 have the same structure, and the first slider 33 will be described with reference to FIG. FIG. 2 is a view of the first slider 33 as seen from below. In the figure, 40 is a base plate to which the base end is attached to the underframe 21, and 41 and 42 are rollers attached so as to sandwich the roller guide 31.

Next, the operation of the above configuration will be described. In the case of reversing the rotary stool having such a configuration, first, the locking device (not shown) is released to make the stool rotatable.

Next, the sitting portion is rotated in the arrow direction in FIG. When the stool starts to rotate, first, the first slider 33 engages with the roller guide 31, the underframe 21 is guided by the slide rail 26, and is pushed out in the direction away from the wall surface 25 (passage side). That is, with the center hinge 22 that is the rotation center of the underframe 21 being displaced toward the passage side (the eccentric state), the underframe 21 rotates. The movement of the underframe 21 to the passage side is performed until the first slider 33 comes off the roller guide 31 (in this embodiment, the rotation angle is 50 °).

Next, when the first slider 33 is disengaged from the roller guide 31, the arc guide 29 is engaged with the pin 32 this time. Since the arc guide 29 is an arc centered on the center hinge pin 22, the underframe 21 does not move to the passage side, and the underframe 21 rotates (50 ° to 130 ° in this embodiment).

Next, when the circular arc guide 29 is disengaged from the pin 32, the second slider 34 is engaged with the roller guide 31 this time, and the underframe 21 is guided by the slide rail 26 and approaches the wall surface 25. Rotate while pulling back in the direction (130 ° to 180 °). Then, the reversal is completed at the time when it is rotated 180 °.

According to the above configuration, the rotation of the stool in the state where the first slider 33 and the second slider 34 are engaged with the roller guide 31 causes the first slider 33 and the second slider 34 to rotate. Since the rotation is performed with the vicinity as a fulcrum, the radius of rotation on the wall surface 25 side is small, and the gap with the wall surface can be made much shorter than in the conventional example.

In addition, the underframe 21 moves away from / approaches the wall surface 25 while the first slider 33 and the second slider 34 using rollers are engaged with the roller guide 31. You can get the movement of the underframe.

The present invention is not limited to the above embodiment. Although the roller guide 31 is linear in the above embodiment, it may be a curved curve on the side of the center hinge bracket 28 (the side opposite to the wall surface 25).

With such a configuration, it is possible to set a large amount of movement from the wall surface 25 of the underframe 21 that moves in the direction away from the wall surface 25 by the engagement of the first slider 33 and the roller guide 31. The degree of freedom of the shape of the seat can be increased.

[0028]

[Effect of device]

 As described above, according to the present invention, the gap between the stool and the wall surface can be narrowed as much as possible, and moreover, a rotary stool capable of smooth rotation can be realized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a view of the first slider in FIG. 1 seen from below.

FIG. 3 is a front view of a rotary seat disclosed in Japanese Patent Application No. 56-128235.

FIG. 4 is a partial side sectional view of FIG.

FIG. 5 is a top view of FIG.

FIG. 6 is a top view of the pedestal in FIG.

[Explanation of symbols]

 21 underframe 23 leg base 24 floor 25 wall surface 26 slide rail 28 center hinge bracket 29 arc guide 31 roller guide 32 pin 33 first slider 34 second slider

Claims (2)

[Scope of utility model registration request] 1. A center hinge bracket (28) for rotatably supporting an underframe (21) of a seat portion, and a longitudinal direction extending in a direction orthogonal to a wall surface (25) and fixed to a floor (24) side. A footrest (23), a first linear guide (26) provided along the longitudinal direction of the footrest (23) and slidably engaged with the center hinge bracket (28), An arc guide (29) provided on the longitudinal side of the frame (21) and centered on the center hinge bracket (28), and provided on a side orthogonal to the longitudinal direction of the leg stand (23), Pin (32) that engages the circular arc guide (29)
And a second linear guide (31) provided on a side portion orthogonal to the longitudinal direction of the pedestal (23), and a second linear guide provided on one side portion of the underframe (21). First slider (33) engaging guide (31)
And a second slider (34) provided on the other side of the underframe (21) and engaging with the second linear guide (31).
And a rotating stool characterized by having. 2. A center hinge bracket for rotatably supporting an underframe of a seat portion, a leg stand extending in a direction perpendicular to a wall surface and fixed to a floor side, and a leg stand in the longitudinal direction of the leg stand. A linear guide along which the center hinge bracket slidably engages; a first circular arc guide centered on the center hinge bracket, which is provided on a side portion in the longitudinal direction of the underframe; A pin provided on a side portion orthogonal to the longitudinal direction of the base and engaging with the first arc guide, and a circular arc provided on a side portion orthogonal to the longitudinal direction of the leg base and having a convex arc toward the center hinge bracket side. A second circular arc guide having, a first slider provided on one side portion of the underframe and engaging with the second circular arc guide, and a first slider provided on the other side portion of the underframe, Second engaging with second circular arc guide Rotating seat, characterized in that it comprises a slider, a.