JPH053024U - Eccentric vehicle turning chair - Google Patents

Abstract

(57) [Summary] [Purpose] The arm table can be turned around without any interference with the wall surface during turning, and the seat width can be secured sufficiently. [Structure] A rotation mechanism 3 is configured to be horizontally rotatable via a slide mechanism 16 horizontally installed on a leg 1, and a bottom portion of a chair body 9 is fixedly supported on the rotation mechanism 3. A guide cam plate 19 whose axis of symmetry is a line TL passing through the center axis 14 of the turntable extending in the front-rear direction of the chair body 9 is fixed to the chair side member side of the rotating mechanism 3 and is attached to the window side wall a by the coil spring 21. The slide bearing 20 is positioned and axially installed on the foot stand 1 and is constantly in pressure contact. The cam edge of the guide cam plate 19 constitutes a cam portion having a displacement stroke that moves backward through the slide mechanism 16 in conjunction with the turning of the chair body 9 so as not to interfere with surrounding structures.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a vehicle turning chair that turns a chair by turning 180 degrees in a horizontal direction, and in particular, an eccentric vehicle direction that does not interfere with the window side wall even when installed close to the window side wall. It is about convertible chairs.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, there has been used a vehicle turning chair that can turn a chair horizontally with respect to the traveling direction of a train, an automobile, or the like, and can face a chair in the rear row, for example. This type of vehicle turning chair has a structure in which the underframe that constitutes the chair body is pivotally mounted on the pedestal via a rotating mechanism so that the frame can rotate freely. In order not to interfere with other chairs, a predetermined gap (15 to 20 cm) is provided between the main body of the chair and the side wall of the window and other chairs.

However, in the conventional direction changing chair, since the center of rotation of the chair body is fixed to the footrest, it is necessary to prevent the above interference while the vehicle body width of the vehicle is limited, so that the chair and the window side wall are prevented. If the gap between the two is increased, the width of the chair is limited, so that the effective width of the seat is narrowed, and there is a problem that a good sitting feeling cannot be obtained. Furthermore, in the case of a chair that is equipped with an auxiliary equipment of an arm table that accommodates a personal table in the armrest, the turning radius becomes larger when the arm table is used, so the chair must be stored if the arm table is not stored. Couldn't turn.

Therefore, in the conventional chair of this type, the rotation prevention pin is released by the operation of the pedal or the like, and at the same time, the chair body is displaced to the aisle side, the chair body is swung in that state, and then the chair body is again rotated. It had a structure to push it back to its original position so that it came close to the side wall of the window.

[0005]

[Problems to be solved by the device]

 However, it is difficult for a chair user to request such a series of movements, especially for a chair that is used publicly, such as a train, because such a direction-changing chair with complicated movements is required. If priority is given to operability, there is a problem that it is not possible to obtain a satisfactory sitting feeling.

The present invention has been made in view of the above problems, and the chair body can be installed close to the side wall of the window, so that the width of the seat can be sufficiently secured and the chair can be swung. The purpose of the present invention is to provide an eccentric type directional change chair for an eccentric vehicle that can easily change the direction of the arm table while it is in use, without interfering with the wall surface. To do.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the eccentric type turning chair for a vehicle according to the present invention comprises a rotating mechanism that can be horizontally rotated through a slide mechanism horizontally installed on a leg stand. In a rotary chair with the bottom of the chair body fixed, a guide cam plate with a line passing through the center axis of rotation extending in the front-rear direction of the chair body as the axis of symmetry is fixed on the chair body member side of the above-mentioned rotating mechanism. In addition, the chair body is elastically biased through the slide mechanism so that the guide cam plate is constantly pressed against the sliding member that is positioned on the side wall of the window and is axially mounted on the footrest. The gist of the invention is to displace the chair body with a predetermined stroke along the slide mechanism in conjunction with the rotation of the chair body by the co-rotation of the cam plate.

[0008]

[Action]

 The chair body having the above-described structure is supported by the rotating mechanism so as to be rotatable in the horizontal direction, and is supported by the slide mechanism so as to be displaceable in the lateral direction of the chair. Since the chair body side member of the rotating mechanism and the guide cam plate rotate in cooperation with each other, the chair body is slid sideways through the slide mechanism by previously designing the stroke of the cam edge that makes sliding contact with the sliding member. It can be displaced. However, since the displacement is linked to the turning of the chair body, it interlocks with the direction changing operation of the chair to retract the chair in the direction of separating from the side wall of the window and operate to avoid interference.

[0009]

【Example】

 An embodiment of an eccentric type turning chair for a vehicle according to the present invention will be described below with reference to the drawings showing a two-seater chair. In the drawing, reference numerals 1 and 1 denote footrests fixedly installed on a floor surface b of a vehicle or the like, and a leg frame 2 installed between upper ends of the footrests 1 and 1 is provided with a chair body 9 of a chair body 9 via a rotation mechanism 3. An underframe 4 is pivotally attached so as to be horizontally rotatable. Seat hoods 5 and 5 are mounted and fixed on the upper surface of the underframe 4, and armrests 7 and 7 are fixed to the upper ends of sleeves 6 and 6 fixed to both sides of the seat hood 5, respectively, and the seat hood is also formed. A chair body 9 is constructed in which the backrests 8, 8 are pivotally supported so as to be tiltable rearward via a reclining device (not shown) at the rear part of 5. If necessary, a middle armrest can be additionally attached between both seats.

The rotating mechanism 3 is formed so as to face the peripheral edge of the rotary disk receiving plate 11 fixed to the upper surface of the slide plate 10 and the rotary disk 12 fixed to the lower surface of the underframe 4 constituting the chair body 9. A rotating disk 12 is rotatably supported by interposing a bearing 13 between the annular grooves, and a rotating disk center shaft 14 projecting from the axis of the rotating disk 9 is fixed to a disk receiving plate 11. It has a structure in which the underframe 3 is pivoted horizontally (arrows A and B) so that it can be pivoted in the horizontal direction.

The slide plate 10 is pivotally mounted on the leg frame 2 so as to be slidable in the width direction (arrows C and D) via a slide mechanism 16 and is arranged on the leg frame 2. Two slide rails 17 and 17 are fixed in parallel at the end from the window side wall a to the passage side, and at the same time, two rails 18 and 18 juxtaposed on the lower surface of the slide plate 10 are attached to the slide rails 17 and 17, respectively. It has a structure in which it is slidably inserted in each groove.

A guide cam plate 19 is axially attached to the rotary disk central shaft 14 of the rotary mechanism 3 protruding to the lower surface side of the slide plate 10, and a slide bearing 20 is axially installed on the leg frame 2. The coil springs 21 and 21 are mounted between the leg frame 2 and the slide plate 10 so that the cam edge of the guide cam plate 19 is constantly pressed against the sliding bearing 20 in the direction of arrow C with an appropriate pressing force. Elastically bias.

The guide cam plate 19 forms a cam edge with a line TL passing through the center plate 14 of the turntable extending in the front-rear direction of the chair body 9 as an axis of symmetry, and is located at the 3 o'clock position and the 9 o'clock position. The sliding bearing 20 is brought into stable sliding contact, and the armrest 7 of the chair body 9 has a displacement stroke S1 just close to the window side wall a. In addition, the retreating cam portion 24 between the 4 o'clock and 8 o'clock positions has a displacement stroke larger than the locking cam portions 22 and 23. Angle-shaped interference preventing cam portions 25, 25 having a displacement stroke S2 are formed.

Reference numeral 26 denotes a shaft vertically provided with respect to the passage-side leg stand 1, and a tip of the pedal arm 2 extends and retracts from an upper surface of the leg frame 2, and a lock pin 27 elastically biased in a protruding direction is attached to a pedal arm 28. Is a seat lock mechanism configured to be pushed down and retracted (see arrow E) by means of the sliding bearing 20 in front of the chair main body 9 in which any one of the locking cam portions 22 and 23 of the guide cam plate 19 is engaged. In the rearward posture, the underframe 3 is provided with engagement holes 29, 29 into which the tips of the lock pins 27 are fitted.

Reference numeral 30 denotes a personal table that is held at the tip of the armrest 7 when in use and can be stored in the sleeve portion 6 when not in use. The displacement stroke S 2 of the interference prevention cam portion 25 is the personal table 30. When the chair body 9 is swung in the use state, the personal table 30 has a backward stroke that does not interfere with the window side wall a.

Incidentally, 31 and 31 are leaf spring-shaped interference springs fixed to the front and rear ends of the leg frame 2, respectively, and both of the interference springs 31 and 31 face the underframe 4 of the chair body 9 and turn invert. When it does, it can elastically collide and absorb the impact at the time of stop.

When changing the direction of the eccentric type turning chair for an eccentric vehicle having the above structure, the chair body 9 is swung in either direction of arrow A or B while stepping down the pedal arm 28 of the seat locking mechanism 26. The operation of releasing the pedal arm 28 at the reverse position is performed, and the action of the guide cam plate 19 associated with the turning will be described with reference to FIGS. 5 and 6. (1) When the chair body 9 is facing forward, as shown in FIG. 6A, the sliding bearing 20 is in sliding contact with the forward position locking cam portion 23, and the displacement stroke S 1 causes the window side to move. The armrest 7 is close to the window side wall a to secure the passage side space PS. (2) When the chair body 9 starts to rotate (arrow A), the guide cam plate 19 rotates in cooperation, and the sliding bearing 20 forms an interference prevention cam having a displacement stroke S2 formed at the end of the retreating cam portion 24. It becomes to get over the portion 25 (see FIG. 6B). As a result, the rotary disk central shaft 14 is pressed, and the rails 18, 18 pivotally mounted on the slide rails 17, 17 of the slide mechanism 16 resist the elasticity of the coil springs 21 in the direction of retreating from the window side wall a (arrow D). Even when the personal table 30 is slidingly displaced and in use, as shown in FIG. 4, the personal table 30 turns without interfering with the window side wall a. (3) Further, when the chair body 9 continues to rotate, the sliding bearing 20 goes over the interference prevention cam portion 25 on the opposite side via the retreat cam portion 24 (see FIG. 6C). By this overpassing operation, the armrest 7 or the personal table 30 on the opposite side of the chair body 9 also passes without interfering with the window side wall a. (4) Then, when the chair body 9 is turned 180 degrees by turning through the rotation mechanism 3, the sliding bearing 20 slides on the rearward-position locking cam portion 22 of the guide cam plate 19 (see FIG. 6 (d)). The chair body 9 is slidably displaced (arrow D) in the direction of the window side wall a through the slide mechanism 16.

When the chair body 9 is in the frontward or rearward position, the lock pin 27 operated by the pedal arm 28 is fitted into the engaging holes 29, 29 to rotate the rotating mechanism 3 and slide the sliding mechanism 16. Therefore, the chair body 9 is not displaced during use.

[0019]

[Effect of the device]

 Since the eccentric type turning chair for a vehicle according to the present invention is constructed as described above, only by reversing and reversing the chair body, the chair body is moved backward by the cam portion of the guide cam plate so as not to interfere with the window side wall. The structure makes it easier to change the direction of the chair and not only improves operability, but also allows the chair to be installed close to the side wall of the window. Will be able to.

Further, since the chair can be installed close to the side wall of the window, the width of the seat can be widened, and the seat has an excellent feature such as an improved feeling of sitting. The effect obtained by implementing the present invention is extremely large.

[Brief description of drawings]

FIG. 1 is a front view of an eccentric turning chair according to the present invention.

FIG. 2 is a right side view of the same.

FIG. 3 is a plan view showing a rotation mechanism and a slide mechanism.

FIG. 4 is a front view of the rotation mechanism and the slide mechanism.

5 is a sectional view taken along line VV in FIG.

6A to 6D are explanatory views showing the action of the guide cam plate.

FIG. 7 is a plan view showing a turning posture of the chair body.

[Explanation of symbols]

 1 Leg base 2 Leg frame 3 Rotation mechanism 4 Frame 5 Seat cushion 7 Armrest 8 Backrest 9 Chair body 10 Sliding plate 14 Rotating plate central shaft 16 Sliding mechanism 17 Slide rail 18 Rail 19 Guide cam plate 20 Sliding bearing 21 Coil spring 22 , 23 Locking cam part 24 Retracting cam part 25 Interference prevention cam part

Claims (1)

[Claims for utility model registration] [Claim 1] A rotation mechanism that is rotatable in the horizontal direction through a slide mechanism that is horizontally installed on a leg is constructed, and the bottom of the chair body is fixed to the rotation mechanism. In the swivel chair, a guide cam plate having a symmetry axis of a line extending through the center of rotation and extending in the front-rear direction of the chair body is fixed to the chair body member side of the rotating mechanism, and is located on one side. The chair body is elastically biased through the slide mechanism so that the guide cam plate is constantly pressed against the sliding member axially mounted on the leg base, and the chair body is co-rotated by the guide cam plate. An eccentric vehicle direction changing chair characterized in that the chair body is displaced along the slide mechanism with a predetermined stroke in conjunction with the turning of the vehicle.