JPH07205695A - Rotary seat for vehicle - Google Patents

Abstract

PURPOSE:To prevent the increase of the seat surface height by reducing the weight of a cushion frame and forming a space for accommodating the parts for a vehicle such as freights and motors, in the lower part of the cushion frame. CONSTITUTION:A cushion frame 35 is formed of a main frame 35a on the back surface side and a subframe 35b which has a nearly U-shape and is formed from a member having the smaller strength than that of the main frame 35a. The left and right installation brackets 39 in pair are fixed between the main frame 35a and the subframe 35b, and a revolution adjusting mechanism 27 is installed on the installation bracket 39. A keel bracket 51 is extended above in the intermediate part of the main frame. In the upper part of the keel bracket 51, a hinge part 53 for installing an arm rest is installed, and a hinge pin 55 for seat back is installed on the side part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rotating seat suitable for use as a vehicle seat in, for example, railway vehicles,
More specifically, the seat body is rotatably supported by a leg portion fixed on the floor surface of the vehicle compartment through a rotation adjusting mechanism, and the seat body is seat cushion and a seat erected on the rear end side. The present invention relates to a rotating seat for a vehicle, which includes a back, and armrests are provided at a central portion and both side portions of the seat body.

[0002]

2. Description of the Related Art For a bench seat used as a vehicle seat for a train or the like, the seating direction of the seat can be arbitrarily selected according to the traveling direction of the train or the preference and demand of a seated person. A turning structure has been adopted.

For example, as shown in FIG. 2, this rotating sheet 1
The seat body 4 is rotatably supported by the leg portion 2 fixed on the floor of the passenger compartment via the rotation adjusting mechanism 3.
The seat body 4 is provided with a seat cushion 5 (only the frame structure is shown) and a seat back 6 standing upright on the rear end side thereof, and the seat body 4 is provided with armrests 7 in the central portion and both side portions. .

A gas lock mechanism 9 having a gas cylinder and a piston rod is used as a reclining mechanism for tilting the seat back 6 of the seat body 4 back and forth. One end side of the gas lock mechanism 9 is a cushion of the seat cushion 5. The hinge arm 8 is attached to the frame 5a side, and the other end side is attached to a hinge arm 8 extending downward from a side portion of the back frame 6a of the seat back 6.

The cushion frame 5a of the seat cushion 5 includes a front pipe frame 11a, a rear pipe frame 11b, and both side frames 11c and 11c.
It is formed into a substantially rectangular shape from c.

A pair of left and right mounting brackets 1 are provided between the front pipe frame 11a and the rear pipe frame 11b of the cushion frame 5a of the seat cushion 5.
3,13 are hung and fixed. The movable side of the rotation adjusting mechanism 3 is attached to the pair of left and right mounting brackets 13, 13.

Further, the front pipe frame 11a is curved while the pair of left and right mounting brackets 13 and 13 is mounted and between the rear pipe frame 11b while the pair of left and right mounting brackets 13 and 13 is mounted. The formed keel bracket 15 is suspended and fixed.

The keel bracket 15 is formed by bending upward from the fixing portion of the rear pipe frame 11b.

Further, a hinge portion 15a for attaching the central armrest 7 is provided on the upper portion of the keel bracket 15.
Further, hinge pins 15b of a hinge arm 8 provided on the frame 6a of the seat back 6 are formed on both sides, and the seat back 6 is rotatably supported around the hinge pins 15b.

In the conventional vehicle rotary seat 1, the load applied to the seat back 6 and the armrest 7 is applied to the keel bracket 1 via the hinge pin 15b and the hinge portion 15a.
In addition to 5, the keel brackets 15 are dispersed and added to the front pipe frame 11a and the rear pipe frame 11b.

[0011]

In the conventional vehicle rotary seat 1, the load on the seat back 6 side is the keel bracket 1.
Since it is added to the front side pipe frame 11a and the rear side pipe frame 11b of the cushion frame 5a in a dispersed manner, the front side pipe frame 11a and the rear side pipe frame 11b cannot be made thin and must be sturdy. It was difficult to reduce the weight of the cushion frame 5a of the seat cushion 5.

Further, a keel bracket 15 is stretched between the pair of left and right brackets 13 of the front pipe frame 11a and the pair of left and right mounting brackets 13 of the rear pipe frame 11b. Therefore, the components such as the rotation adjusting mechanism 3 have to be housed in the lower part of the keel bracket 15, which inevitably increases the seat seat height, or the frame of the seat cushion 5. The space of the leg 2 below 5a was inevitably narrowed.

Further, since the keel bracket 15 is provided at the center of the cushion frame 5a of the seat cushion 5, it is difficult to lay out other parts and there is no degree of freedom in design.

An object of the present invention is to reduce the weight of the cushion frame and to provide a space between the front pipe frame and the rear pipe frame for accommodating vehicle parts such as luggage and motors. Can be provided to prevent the seat height from increasing, or to prevent the leg space below the seat cushion from narrowing, facilitating the layout of other components. It is intended to provide a rotating seat for a vehicle, which can be carried out and has excellent economical efficiency.

[0015]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the seat body is rotatably supported by a leg portion fixed on the floor surface of a vehicle compartment via a rotation adjusting mechanism. A cushion frame of the seat cushion, wherein the seat body includes a seat cushion and a seat back erected on a rear end side of the seat body, and armrests are provided at central portions and both side portions of the seat body. Is formed of a main frame on the back side and a sub-frame integrally formed on the front side and both sides with a member having less strength than the main frame on the back side and having a substantially U-shape. A pair of left and right mounting brackets are suspended and fixed between the main frame on the rear side and the subframe on the front side, and the rotation adjusting mechanism is The keel bracket is attached to a pair of left and right mounting brackets, and the keel bracket extends upward and is fixed to the middle of the rear ends of the pair of left and right mounting brackets of the main frame. And a hinge pin for seat back is formed on the side.

[0016]

According to the present invention, the cushion frame of the seat cushion has the rear main frame and the front and both sides formed of a member having less strength than the rear main frame integrally formed into a substantially U-shape. Since it is formed from the formed sub-frame, the weight of the cushion frame can be reduced, and a pair of left and right mounting brackets are hung between the main frame on the rear side of the cushion frame and the sub-frame on the front side. Passed and fixed,
The rotation adjusting mechanism is attached to the pair of left and right mounting brackets, and a keel bracket extends upward and is fixed to the middle of the main frame where the rear ends of the pair of left and right mounting brackets are attached. The main frame and the front side sub-frame are hung and not fixed, so it is possible to store vehicle parts such as luggage and motors between the front side pipe frame and the rear side pipe frame. Space can be secured.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle rotary seat according to the present invention will be described in detail below with reference to the drawings. FIG. 1 schematically shows an embodiment of a vehicle rotary seat according to the present invention. The rotary seat 21 includes a bench type seat cushion 22 (only the frame structure is shown) and a seat back 23 (one side is a frame). The seat main body 24 is formed of only the structure).

As shown in FIG. 1, a leg portion 25 is provided upright on the installation floor surface, and a rotation adjusting mechanism 27 is provided on the leg portion 25.
Is provided, and the seat cushion 22 and the seat back 2 are provided.
A seat body 24 composed of 3 is supported by a rotation adjusting mechanism 27 so as to be rotationally adjustable.

Further, although the rotation adjusting mechanism 27 is formed of the outer member 28 and the inner member 29 in this embodiment, it may be formed of an upper member and a lower member. In this embodiment, the seat cushion 22 is attached to the outer member 28.

Seat cushion 22 and seat back 23
The seat main body 24 composed of is provided with a pivotable armrest 31 in the center, and a pair of left and right fixed armrests 32 (one side is not shown) on both left and right sides.

The frame 35 of the seat cushion 22
Is composed of a main frame 35a on the back side and a sub-frame 35b fixed to the main frame 35a on the back side by welding or the like. The sub-frame 35b has a front surface side 36 and both side surfaces 37, 37 integrally formed in a substantially U-shape. A pair of left and right fixed armrests 32 are fixed to both sides 37, 37 of the sub-frame 35b.

The main frame 35a is formed of, for example, a pipe frame having a relatively large diameter. Further, the sub-frame 35b is formed of a square pipe, a round pipe, or a band-shaped frame that is lighter than the main frame 35a. Incidentally, the main frame 24 is not limited to the pipe frame, and the main point is that the main frame 24 is stronger than the sub frame 35b, and the shape can be variously changed.

Between the main frame 35a on the rear side and the front side 36 of the sub-frame 35b, a pair of left and right mounting brackets 39, 39 having a substantially U-shaped cross section are bridged and fixed by welding or the like. The pair of left and right mounting brackets 39, 39 are provided at positions substantially symmetrical with respect to the front and rear, and the rotation adjusting mechanism 2
7, a plurality of mounting holes 39a are formed.

A gas lock mechanism 43 of left and right reclining mechanisms 41 for tilting the seat back 17 back and forth is provided inside both sides 37, 37 of the cushion frame 35 constituting the seat cushion 22. There is. A front end 43a of the gas lock mechanism 43 is attached to a horizontal rod 40 that is hung on the front side of the pair of left and right mounting brackets 39, 39, and a rear end 43b is attached to the seat back 23.
Is attached to a hinge arm 57 described later.

In this embodiment, the gas lock mechanism 43 is provided inside the pair of left and right mounting brackets 39, 39, but outside the pair of left and right mounting brackets 39, 39,
Alternatively, it may be provided outside both sides 37, 37 of the sub-frame 35b.

The outer member 28 of the rotation adjusting mechanism 27.
Is formed with a screw hole 28a at a position facing the mounting holes 39a of the pair of left and right mounting brackets 39, 39.
39 is fixed to the outer member 28 of the rotation adjusting mechanism 27 with screws (not shown).

A keel bracket 51 extends upward and is fixed to an intermediate position where the rear ends of the pair of left and right mounting brackets 39, 39 of the main frame 35a are mounted.

As shown in FIG. 1, the keel bracket 51.
Is formed of two plate-shaped members, and the hinge portion 5 for mounting the armrest is attached to the upper end portion 51a of the keel bracket 51.
3 is formed. The upper end portion 51a of the keel bracket 51 may be connected to form a substantially U-shaped cross section, or one plate-shaped member may be formed by bending.

The armrest 31 is attached to the hinge portion 53 for attaching the armrest of the keel bracket 51 to the pivot pin 3.
An armrest 31 is rotatably supported via 1a so as to be housed between the seatbacks 23 and 23. Further, hinge pins 55 (one side not shown) serving as the center of rotation of the seat back 23 are formed on both sides of the keel bracket 51, respectively.

Hinge pin 55 of the keel bracket 51
Is inserted into a hinge hole 57a of a hinge arm 57 formed at the lower end of a back frame 23a having a substantially U-shaped cross section of the seat back 23. The rear end of the gas lock mechanism 43 of the left and right reclining mechanism 41 is pivotally supported at the lower end of the hinge arm 57.

[0031]

The structure of one embodiment of the vehicle rotary seat according to the present invention has been described above. According to this structure, the cushion frame of the seat cushion has the main frame on the rear side and the main frame on the rear side. Since the front side and both sides formed of a member having less strength than the frame are integrally formed with the sub-frame integrally formed in a substantially U shape, the weight of the cushion frame can be reduced, and the cushion frame can be reduced. A pair of left and right mounting brackets are hung and fixed between the main frame on the rear side of the main frame and the subframe on the front side, and the rotation adjusting mechanism is mounted on the pair of left and right mounting brackets, and The keel bracket extends upward and is fixed in the middle where the rear ends of the pair of mounting brackets are attached. A space that can store luggage, motors, and other vehicle parts between the front pipe frame and the rear pipe frame because it is not fixed by being bridged between the main frame and the front sub frame The seat height can be prevented from increasing, or the space of the leg below the seat cushion can be prevented from narrowing, and the layout of other parts can be improved. It is possible to obtain a rotating seat for a vehicle, which can be easily performed and has excellent economical efficiency.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a vehicle rotary seat according to the present invention.

FIG. 2 is an exploded perspective view of a conventional vehicle rotary seat.

[Explanation of symbols]

 21 Vehicle Seat 22 Seat Cushion 23 Seat Back 23a Seat Back Frame 24 Seat Body 25 Legs 27 Rotation Adjustment Mechanism 28 Outer Member 28a Screw Hole 29 Inner Member 31 Arm Rest 31a Hinge Pin 32 Arm Rest 35 Cushion Frame 35a Main Frame 35b Sub Frame 36 Front Side 37 Both sides 39 Mounting bracket 39a Mounting hole 41 Reclining mechanism 43 Gas lock mechanism 51 Dragon bone bracket 53 Hinge part for armrest mounting 55 Hinge pin 57 Hinge arm 57a Hinge hole

Claims (1)

[Claims] 1. A seat back in which a seat body is rotatably supported by a leg portion fixed on a floor surface of a passenger compartment through a rotation adjusting mechanism, and the seat body is erected on a seat cushion and a rear end thereof. And a cushion frame of the seat cushion has less strength than the main frame on the rear side and the main frame on the rear side in a rotary seat for vehicles in which armrests are provided in the central portion and both side portions of the seat body. The front side and both sides formed of a member are integrally formed with a sub-frame integrally formed in a substantially U shape, and a pair of left and right attachments are provided between the main frame on the rear side of the cushion frame and the sub-frame on the front side. The brackets are suspended and fixed, and the rotation adjusting mechanism is attached to the pair of left and right mounting brackets, and the front of the main frame is attached. Note The keel bracket extends upward and is fixed in the middle where the rear ends of the pair of left and right mounting brackets are attached, a hinge portion for attaching an armrest is provided on the upper portion of the keel bracket, and a side portion for seat back rotation is provided. A rotating seat for a vehicle, wherein a hinge pin is formed.