JPH0231951A - Rotary seat - Google Patents

Abstract

PURPOSE:To improve the property of getting on/off of a seat and an operating property by providing a lock releasing means which is brought into contact with an immovable portion immediately before the completion of rotation of a rotary base and which is interlocked with the rotation of the rotary base to separate a lock rod from a reciprocating slider. CONSTITUTION:In a rotary seat, as a seat 4 is rotated, a lock releasing means 22 functions to engage a guide pin 1b with the end portion on the free end side of a long groove 2a. Also, interlocked with the rotation of a rotary base 2, a lock rod 19 is oscillated via a lock releasing arm 23, releasing the engagement between a lock claw 19a and a lock hole 15a to remove the restraint of sliding of reciprocating sliders 15. Hence, in this rotary seat, the rotation of the seat 4 can be stopped without need for carrying out a complicated operation while, at the same time, a crank 16 is automatically oscillated forward due to the weight of a rider to project out the seat forward while lowering the front end portion thereof.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a rotating seat for a passenger car.

[Conventional technology]

2. Description of the Related Art Rotating seats are known in which the seat is configured to be rotatable in order to improve the ease of getting in and out of a passenger car.

Conventional rotating seats are constructed by placing a seat frame that forms the bottom of the seat on a rotating table that is rotatably supported by a spindle and a free ball on a seat mounting table installed in the vehicle body. The front end of the seat is rotated toward the vehicle door side about the support shaft by operating a seat rotation locking means provided on the side of the seat mounting base. .

By the way, the above-mentioned conventional rotary seat is configured such that the support shaft, which is the center of rotation thereof, supports a substantially central portion of the seat frame.

For this reason, in conventional rotating seats, when the front end of the seat rotates to a position facing the vehicle door side, the floor part on the car side faces the driver's calf, and the height of the seat surface of the rotating seat increases. The seat height is higher than the seat height of a typical seat by the amount of vehicle height.

In the case of a relatively small driver's vehicle, the seat is designed to be rotatable for the purpose of improving ease of getting on and off the seat, but this has the disadvantage of worsening the ease of getting on and off the seat. In order to solve this problem, a reciprocating slig crank mechanism is disposed between the seat frame and the rotary table to support the seat frame slidably and swingably with respect to the rotary table.
A rotary seat has been proposed in which the front end of the seat is moved forward and downward at the boarding/exiting position by operating a seat sliding lock means disposed on the side of the rotary table.

This rotating seat can be operated by operating the seat sliding lock means with the seat rotated to the getting on/off position.
The position of the front end of the seat is projected outward from the floor portion on the vehicle side, and the height of the seating surface at the front end of the seat is lowered. That is, as shown in FIGS. 4 to 6, this rotary sheet is placed on a sheet mounting table 1, a rotary table 2. It is composed of a seat frame 3, a seat 4, a reciprocating slider crank mechanism 5, a seat sliding locking means 6, and the like.

The seat mounting table l is arranged to be slidable in the front and rear directions with respect to the floor of a vehicle body (not shown) via an adjuster 7. As is well known, the seat mounting table 1 can adjust the longitudinal position of the seat 4 by operating an adjuster lock means (not shown).

The rotary table 2 is rotatably supported by a support shaft 8 and a free ball 9 with respect to the sheet mounting table 1 around the support shaft 8 .

Here, the support shaft 8 is, as shown in FIGS. 7 and 8,
It is fixedly mounted on the rotary table 2 and is inserted through a restrust ball bearing 10 into a shaft hole 1a bored in the sheet mounting table 1, and a conical roller bearing 11 and a washer 12 are attached to the threaded portion of the insertion end of this support shaft 8. It is rotatably pivotally connected to the sheet mounting table 1 by screwing a nut I3 therebetween.

The rotation range of the one-turn table 2 is approximately determined by the head of the guide pin 1b installed on the sheet mounting table 1 fitting into a guide groove 2a formed in an arc shape around the support shaft 8. 90
It is regulated within the range of ``.

That is, in the one-turn table 2, one end of the guide groove 2a comes into contact with the head of the guide bin 1b at a position where the front end of the seat 4 faces the steering wheel side of the vehicle, and its rotation in the counterclockwise direction in FIG. 4 is restricted. , on the other hand, at a position where the front end of the seat 4 faces the inter-vehicle door side, the other end of the guide groove 2a is connected to the guide pin 1b.
The head of the head comes into contact and its rotation in the clockwise direction in FIG. 4 is restricted.

Furthermore, the seat rotation locking means 14 of the rotary table 2 is in a position where the guide pin 1b abuts and the rotation thereof is restricted.
It is configured such that its rotation is locked.

As shown in FIG.
By operating the rotation lock lever 14b, which is swingably supported by It is configured to engage and disengage from the stop hole 2b to lock rotation of the rotary table 2.

By the way, as shown in FIG. 10, the center of rotation of this rotary table 2 is set to be located behind the rotation center O of the conventional rotary seat.

Therefore, since the rotation radius of the rear corner of this rotary table 2 is smaller than the conventional rotary size diameter LO, the amount of inward protrusion of the rear corner when the rotary table 2 rotates. a is reduced compared to the conventional protrusion amount, and the protrusion amount C of the front end (upper end in FIG. 10) of the rotary table 2 toward the door is increased by the difference. As a result, compared to a rotating seat in which the handbrake, console box, etc. placed in the center of the passenger compartment impede the rotation and the amount of rotation cannot be set very large, the rotating seat in this embodiment has a lower rotation amount. The amount of rotation can be set to the maximum (90 degrees), and the amount of protrusion of the front end of the seat toward the door is increased, thereby improving the ease of getting on and off the seat for the driver.

On the other hand, the seat 4 is set on a seat frame 3, and this seat frame 3 is arranged on the rotary table 2 via a reciprocating slider crank mechanism 5 (see FIGS. 7 to 9). .

The reciprocating slider crank mechanism 5 includes a reciprocating slider 15 and a crank 16.

The reciprocating slider 15 is formed in substantially the same manner as the adjuster 7, and is disposed at the rear of the seat frame 3 on the rotary table 2. The seat frame 3 is supported by the reciprocating slider 15 so as to be slidable and swingable in the front-rear direction of the seat 4 relative to the one-turn table 2 .

The crank 16 has both ends rotatably supported on the rotary table 2 by brackets 16a, and its center portion rotatably supported on the seat frame 3 by another bracket 16b.

Furthermore, a compressible spring 17 is suspended between the crank 16 and a bracket 2C arranged on the rotary table 2, which causes the seat frame 3 to move backward and upward relative to the rotary table 2. Habits are given.

Further, this rotating seat is provided with a seat sliding locking means 6 which is configured in substantially the same manner as the adjuster locking means.

The seat sliding locking means 6 includes a locking rod 19 that is swingably supported by a bracket 18, and a locking rod 19 that is swingably supported by a bracket 18.
The lock lever 20 is integrated with the lock lever 20.

The lock rod 19 is formed with a lock pawl 19a that engages with a lock hole 15a formed in the reciprocating slider 15 to restrain the sliding movement of the reciprocating slider 15. When the seat 4 is in the retracted position, this lock pawl 19a is formed. 19a is configured to engage with the lock hole 15a to restrict sliding and rocking of the seat 4.

On the other hand, the lock lever 20 is formed such that its end extends below the front end of the seat 4, and a spring 21 biases the lock claw 19a into engagement with the lock hole 15a.
By swinging this end against the elasticity of the lock rod 19, the lock claw 19a and lock hole 15a are
The rotary seat configured as described above is configured to disengage from the seat f! : The seat 4 is separated and rotated so that the front end of the seat 4 faces the door side. Next, in this state, the lock lever 20 is operated to swing the lock rod 19, and the lock claw 19 is rotated.
a from the lock hole 15a, and the seat 4
By shifting the seat 4 forward, the reciprocating slider 1
The front end of the seat 4 is slid forward by the crank 16, and the front end of the seat 4 is lowered by the crank 16. Therefore, in this rotating seat, the height of the seating surface of the seat 4 when getting on and off is lower than that of the conventional one, and the front end of the seat 4 protrudes outward more than the floor part on the car side. The seat surface faces a position that makes it easier for the driver to get on and off the seat, further improving the ease of getting on and off the seat.

[Problem to be solved by the invention]

By the way, in the above rotating seat, around the seat 4,
Adjuster lock lever for adjusting adjuster 7
2 Rotation lock lever 1 for locking the rotation of the rotation table 2
4b and a lock lever 20 for locking the sliding movement of the seat 4, many operating levers with different purposes are provided.

For this reason, 1. Originally, placing many operating levers on a rotating seat mainly intended for vehicles aimed at women is
Troubles are likely to occur due to mistakes in operating procedures, and the fear of such mistakes may lead to the inconvenience that the functions are not fully utilized.

[Means to solve the problem]

In order to solve the above-mentioned problem, the present invention abuts the stationary part in a state immediately before the rotation of the rotary table is completed.

Further, the sheet mounting table is provided with a lock release means for swinging the lock rod in conjunction with the rotation of the rotary table and disengaging the lock rod from the reciprocating slider.

[For production]

In the rotating seat according to the present invention, the locking rod that restrains the forward movement of the seat, that is, the sliding of the reciprocating slider, is automatically released in conjunction with the rotation of the 9-swivel base without having to operate the lever. .

〔Example〕

As shown in FIG. 1, the rotary seat according to the present invention has a fourth
A lock release means 22 is provided on the lock rod 19 of the rotary seat shown in FIGS. 10 to 10.

In FIG. 1, the same reference numerals as those given to the above-described rotary seat are used for parts that are configured in substantially the same way as the above-described rotary seat, and explanations of the configuration of each part are omitted to avoid duplication. .

In FIG. 1, the lock release means 22 includes the lock rod 19
and a lock release arm 23 formed integrally with the.

Existing guide pin 1b planted on mounting table 1 to sea 1
It is made up of.

The lock release arm 23 is located on the free end side of the lock rod 19.
It is integrally formed to extend along a guide groove 2a that restricts the rotation range of the rotary table 2. This unlock arm 2
3, it fits into the guide pin 1b.

Further, an arc-shaped long groove 23a is formed substantially along the guide groove 2a. The long groove 23a is formed such that the free end of the long groove 23a is located a predetermined distance ahead of the rotation end of the guide groove 2a. That is, as shown in FIG. 2, the free end side end of this long groove 23a faces the position where the rotary table 2 is rotated and comes into contact with the guide pin 1b immediately before the rotation of the rotary table 2 is completed. , and in conjunction with the rotation of the one-turn table 2 until the rotation is completed, the lock rod 19 is swung as shown in FIG. It is set at a position where it can be removed from the lock hole 15a.

In the rotating seat configured in this way, by rotating the seat 4, the lock release means 22 functions, that is, the guide pin 1b and the free end side of the long groove 2a engage with each other, and the rotating table 2 is rotated. The lock release arm 23 is linked to the rotation.
The lock rod 19 is swung through the lock lever 19, and the lock pawl 19a is disengaged from the lock hole 15a, so that the sliding movement of the reciprocating slider 15 is released.

Therefore, in this rotating seat, when the rotation of the seat 4 is stopped, the crank 16 is automatically swung forward and downward by the occupant's weight, and the seat is projected forward, without the need for complicated lever operations. At the same time, its front end portion is lowered.

In the above embodiment, the lock release arm 23 is configured to swing by engaging with the end of the long groove 23a such as the guide pin 1a, but it may be extended from an immovable part such as the sheet mounting table 1. Unlock arm 23 with stopper
It may be configured to swing.

〔Effect of the invention〕

The rotating seat according to the present invention improves the ease of getting on and off the seat and the operability of the seat.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIGS. 2 and 3 are plan views showing the operating mode of the above embodiment, FIG. 4 is a perspective view of a conventional rotary seat, and FIG. Side sectional view of figure 6
The figures are a vertical sectional view of FIG. 4, FIG. 7 is a partially exploded perspective view of the rotary seat, FIG. 8 is a partially broken side view of FIG. 7, FIG. 9 is a partial sectional view of FIG. 8, and FIG. The figure is a schematic diagram showing the operating mode of the rotary seat. 1... Sheet mounting table, 2... Rotating table, 3...
- Seat frame, 4... Seat, 5... Reciprocating slider crank mechanism, 6... Seat sliding locking means, 7... Adjuster, 8... Support shaft, 9...・
・Free ball, 14... Seat rotation locking means,
15... Reciprocating slider, I6... Crank, 1
7...Spring, 19...Lock rod, 20...
Lock lever 121... Spring, 22... Lock release means, 23... Lock release arm, 23a...
...Long groove. Flow diagram 4,

Claims (1)

[Claims] A reciprocating slider configured by disposing a seat frame on a rotary table rotatably supported on a seat mounting table disposed on a vehicle body, and disposed at the rear of the rotary table, and the rotary table. The seat frame is slidably and swingably supported on the rotating table via a reciprocating slider crank mechanism consisting of a crank disposed in the front part of the reciprocating slider. In a rotary seat in which a locking rod is disposed on the rotary table to engage with and restrain the sliding of the reciprocating slider, the lock rod contacts a stationary part immediately before the rotation of the rotary table is completed, and A rotary seat characterized in that the sheet mounting table is provided with a lock release means for swinging the lock rod in conjunction with the rotation and separating the lock rod from the reciprocating slider.