JPS62283027A - Turning operation device for seat - Google Patents

Abstract

PURPOSE:To prevent a seat from interfering with a side wall by pressing the sat toward the side wall from the foundation thereof with a pressing means via a support member in a normal condition and separating the support member from the side wall against the pressing means with a slide friction member pushing a guide member in turning the seat. CONSTITUTION:When a lock mechanism 23 has been released by operating a foot pedal 27 and lowering a lock piece 25, a base 4 and a foundation 7 are unlocked. Then, when a seat 20 has been turned, for example, toward the rear side in a clockwise direction by handling a seat back 18 or a seat arm 19, a slide friction member 21 turns. In this case, while rolling in contact with a guide member 22, the friction slide member 21 is pushed out toward the midship part of a cabin and a support member 5 is slidably moved to said part concurrently therewith against an extension coil spring 9. Therefore, the shift of the foundation 7 toward the midship part of the cabin ensures that the seat 20 can be turned without any interference of the side corner part of the seat 20 with a side wall 8.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a seat rotation operating device that is mainly attached to a vehicle and used.

(Prior Art) In general, seats for vehicles such as trains and buses are usually fixed facing the direction of travel of the vehicle.

Therefore, with these devices, when traveling with a family or a group of like-minded people, people have to sit in groups of two, which reduces the fun by half.

Therefore, in order to make it possible to sit face-to-face and have a pleasant conversation, for example, a pivot shaft for rotation is provided in the center of the seat, as seen in Shinkansen seats, and the seat can be rotated around this pivot shaft. There are some structures that have this structure.

(Problem to be Solved by the Invention) In the case of a rotating seat like the Shinkansen mentioned above, the locus of the corner near the side wall on the window side draws a large arc outward from the window side, as shown by imaginary line A in Figure 2. Therefore, this protrudes outward (α)
The seat is placed in advance in a manner that is biased toward the center of the vehicle interior, and this type of vehicle has the following problems.

(a) Since the seats are tilted towards the center of the vehicle interior, the aisle becomes narrower.

Therefore, in such devices, the seats are narrow in order to ensure a sufficient width of the passageway, and they tend to be cramped.

(b) The large gap between the side wall and the sheet is not only unsightly, but also makes it easy for various items (such as food such as mandarin oranges or small cosmetic items) to get stuck in this gap, and once they are If it gets stuck, it will take a lot of effort to take it out.

Therefore, the present invention has been proposed in view of the above problems, and aims to prevent the corners of the seat from interfering with the side wall when rotating the seat, while eliminating the gap between the side wall and the seat. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a rectangular base in a direction substantially perpendicular to the side wall, and fixes and supports a seat base on the upper surface of the base. A support member is provided to be rotatable and slidable in the longitudinal direction of the base, and the support member is pressed against the side wall side by a pressing means to slide against either the top surface of the support member or the bottom surface of the pedestal. A member is provided, and a guide member is provided on the other side in a state that crosses a part of the rotation locus of the sliding member, and the sliding member slides in contact with the guide member as the sheet is rotated, thereby pressing the pressing means. The support member is moved in a direction away from the side wall against the biasing force.

(Function) Since the sheet is pressed from the base to the side wall side by the pressing means via the support member, no gap is created between the side wall and the end surface of the sheet on the side wall side.

When rotating the sheet, the sliding member presses the guide member when the sliding member contacts the guide member and further rotates the sheet.

Due to the reaction force that the sliding member receives from the guide member due to this pressing force, the supporting member is separated from the side wall against the pressing force of the pressing means, so that the sheet can be rotated without its corner portion interfering with the side wall. This is possible.

(Effects of the Invention) Since the present invention is configured and operates as described above,
It has the following effects.

That is, since the seat is always drawn and urged toward the side wall by the pressing means, even if the seat is made to a sufficient size, the width of the passage provided in the center of the vehicle compartment can be made wide.

In addition, since there is no gap between the side wall and the sheet, there is an advantage that the viewing area is good and that various articles do not get stuck in the gap.

(Example) Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, a seat rotation operating device 1 attached to a bus consists of a base 4 supported on a floor 2 by legs 3 at both ends, and a support provided on the top surface of the base 4. It consists of a member 5 and a pedestal 7 supported by the support member 5 via an abutting support member 6.

As shown in FIG. 2, the base 4 is formed into a rectangle and is disposed at a substantially right angle to the side wall (window side) 8 toward the center of the vehicle interior.

A support member 5 provided on the upper surface of the base 4 is formed into a disk shape and is supported slidably in the longitudinal direction of the base 4 by a guide rail (not shown), and is attached to the side wall by a tension coil spring (pressing means) 9. Slide member 10 pulled and biased towards the 8 side
A pivot bolt 1 is attached to the upper surface via a thrust bearing 11.
2, and four stud bolts 13 for mounting the base are erected on the upper surface of the rotation support member 5.

A base 4 and a slide member 10 slidably supported by the base 4
What is the guide rod 1 protruding from the top surface of the slide member 10?
4 slides inside a long hole 15 bored in the upper surface of the base 4, so that the sliding amount of the slide member 10 relative to the base 4 is regulated.

The pedestal 7 is formed into a rectangular frame shape, and a support plate 16 is mounted across the center of the pedestal 7 from front to back, and is screwed onto the upper surface of the support member 5 with stud bolts 13. A seat 17, a backrest 18, and armrests 19 are provided at both ends of the backrest 18 to form a seat 20 for two people.

On the lower surface of the square frame-shaped rear side of the pedestal 7 near the center, sliding members 21 formed of bearings are provided on the left and right sides, and the rotational trajectory of the sliding members 21 that rotates as the seat 20 rotates. A guide member 22 is protruded from the upper surface of the base 4 so as to extend linearly across a part of the side wall (indicated by dotted arrow B in FIG. 2).

A locking mechanism 23 for the seat 20 is provided on the leg 3 on the center side of the vehicle compartment, and this locking mechanism 23 connects the leg 3 and the base 4.
A round bar-shaped lock piece 25 is pivotally supported to be able to move up and down, a compression spring 26 presses the lock piece 25 upward, and the lock piece 25 resists the pressing force of the compression spring 26. It is comprised of a foot pedal 27 for pulling down the lock 25 and lock fitting holes 28 formed at two places on the left and right sides of the lower surface of the base 7.

Next, a rotation operation method of the seat rotation operation device 1 configured as described above will be explained.

First, when the foot pedal 27 is operated to lower the lock piece 25 and release the lock mechanism 23, the base 4 and the pedestal 7
is unlocked.

Next, hold the backrest portion 18 or armrest portion 19 and
For example, when the seat 20 is rotated clockwise from the forward facing position shown in FIG. 2 to the backward position shown in FIG. do.

At this time, while the sliding member 21 is rolling while contacting the guide member 22, the sliding member 21 is pushed toward the center of the vehicle interior by the reaction force received from the guide member 22, and along with this, the supporting member 5 is slid toward the center of the vehicle compartment by the maximum amount (β) against the pulling force of the tension coil spring 9.

Therefore, by moving the pedestal 7 toward the center of the vehicle compartment,
The seat 20 can be rotated without the corners of the seat 20 on the side wall 7 interfering with the side wall 8.

Then, when the seat 20 in the forward facing position is rotated backward and the lock fitting hole 28 and the lock piece 25 are matched and fitted, the seat 17 is fixed in the backward facing state and supported by the base 4.

Conversely, when returning the rear-facing seat 20 to the front, rotate the seat 20 counterclockwise after operating the foot pedal 27, and the corner of the seat 20 on the side wall 8 side will be rotated in the same manner as described above. Sheet 2 without interfering with side wall 8
0 can be rotated.

In the above embodiment, the sliding members 21 are provided on the left and right sides of the rear side of the pedestal 7, but they may also be provided on the front side. In such a case, the sheet 20 can be rotated 360°.
You will be able to rotate it.

Further, in the above embodiment, the sliding member 21 is provided on the lower surface of the pedestal 7, and the guide member 22 is provided on the base 4.
This may be done by providing a guide member 22 on the lower surface of the pedestal 7 and a sliding member on the base 4, or the guide member 22 may be formed in an arcuate shape so that the middle part approaches the center part of the sheet 20. You may also do so.

Furthermore, in the embodiment described above, the rotation operating device 1 for the seat 20 is attached to a bus, but it can of course be applied to trains, ships, and airplanes.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of a seat rotation operating device attached to a bus, and FIG. 2 is a plan view of the main part. 4... Base, 5... Support member, 7... Pedestal, 8...
... Side wall, 9... Pressing means, 20... Sheet, 21
...Sliding member, 22...Guide member. Patent applicant Katsunori Sugimoto, representative of Nonda Kotsu Co., Ltd., patent attorney

Claims (1)

[Claims] A rectangular base is provided in a direction substantially perpendicular to the side wall, a support member for fixing and supporting a seat pedestal on the upper surface of the base is rotatable and slidable in the longitudinal direction of the base, the support member is pressed against the side wall side by a pressing means, a sliding member is provided on either the upper surface of the support member or the lower surface of the pedestal, and a guide member is provided on the other side in a state that crosses a part of the rotation locus of the sliding member. The sliding member is provided so that as the seat is rotated, the sliding member slides into contact with the guide member, thereby moving the supporting member in a direction away from the side wall against the pressing force of the pressing means. Features a seat rotation operation device.