JPH0730423Y2 - Vehicle seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention provides a pair of locking mechanisms for restraining the seat back or the seat from being flipped up below both sides of the seat back, and each of the pair of locking mechanisms. The present invention relates to a vehicle seat in which a wire for performing a release operation of a restraint is connected to the seat back frame and an operation lever for pulling the wire is provided in the seat back frame.

"Prior Art" As a conventional vehicle seat of this type, for example, there is one as shown in FIG.

That is, a pair of lock mechanisms 4, 4a for restraining the seat from being flipped up are provided below both sides of the seat back 1, and wires 5, 5a for releasing the restraint are provided to each of the pair of lock mechanisms 4, 4a. The ends of the respective wires 5.5a are connected to an operation lever 3 pivotally attached to one end of the back frame 2 provided in the seat back 1 at both sides in the upper direction.

A wire 5a connected to an operation lever 3 pivotally attached to an upper portion on the other side of the back frame 2 from a lock mechanism 4a provided on the lower side of one side of the seat back 1 crosses the back frame 2 diagonally. Sheet back 1
It is stretched inside.

[Problems to be solved by the invention] However, in such a conventional vehicle seat, a wire 5a for performing a constraint release operation of a lock mechanism 4a stretched across the back frame 2 diagonally, a seat spring, and There has been a problem that a large operating force is required because the pad member or the like buffers, and the pulled wire 5a is difficult to return, resulting in poor operability.

Also, the wire 5a for releasing the restraint of the lock mechanism 4a
Then, since the pad member cushions, there is a problem that the pad member is scraped off by the wire 5a and damaged by repeated restraint release operations.

In this case, it is conceivable to use a control cable formed by inserting an inner wire inside the outer casing, instead of the wire connecting the lock mechanism 4a and the operating lever 3, but it becomes complicated and expensive. I will end up.

The present invention has been made in view of such a conventional problem, so that the wire for performing the lock release operation of the lock mechanism that locks the seat and the like so that the seat cannot be flipped up and the plummer or the pad member do not interfere with each other. Therefore, it is an object of the present invention to provide a vehicle seat that solves the above problems.

"Means for Solving the Problem" The gist of the present invention for achieving such an object is to provide a pair of lock mechanisms for restraining the seat back or the seat from being flipped up below both sides of the seat back, In a vehicle seat in which a wire for performing an operation of releasing the restraint of each of the pair of lock mechanisms is connected, and a seat back frame is provided with an operation lever capable of pulling the wire, the seat back frame includes both side portions. A pair of vertical frame members is provided with a plate-shaped horizontal frame member, and the operation lever of the lock mechanism is pivotally attached to one end of the horizontal frame member in both directions. One wire is connected to the lock mechanism below the vertical frame member along the inside of the vertical frame member, and the other wire is connected from the operating lever to the plate. A guide portion formed by bending the lower end edge of the frame member into an annular cross section is inserted and extended to the other vertical frame member, and is connected to a lock mechanism below the vertical frame member along the inside of the vertical frame member. It is a characteristic vehicle seat.

[Operation] When the vehicle seat is in a normal seated state, the seat back or the seat is restrained by the pair of lock mechanisms provided below both sides of the seat back and cannot be flipped up.

When getting on or off the vehicle, the operating lever is operated in a direction to release the restraint of the lock mechanism so that the seat back or the seat is flipped forward, and the wires respectively connected to the pair of locking mechanisms are pulled from the operating lever. .

As a result, the operating force applied to the operating lever is transmitted to the lock mechanisms on both sides of the seat back via separate wires, the lock mechanisms are released from the restraint, and the seat and the like can be flipped up.

One wire connected to the lock mechanism provided below the seat back side portion near the operation lever is located below the vertical frame member along the inside of the vertical frame member of the back frame near the operation lever from the operation lever. It is extended to one of the lock mechanisms to transmit the operation force.

The other wire member is inserted into the other vertical frame member on the opposite side through the guide portion formed on the lower end edge of the horizontal frame member of the back frame from the operation lever, and then extends inside the vertical frame member. Along with it, it is extended to the other locking mechanism below it to transmit the operating force.

As a result, the wire connected from the operating lever to the lock mechanism does not buffer the seat spring stretched on the back frame or the pad member mounted on the back frame.

The guide portion is formed, for example, by bending the lower end edge of the horizontal frame member so as to be wound into an annular cross-sectional shape over the entire width in the longitudinal direction.

If the seat back or the seat is flipped up to the normal position and the lock mechanism is locked, the vehicle seat returns to the normal seated state.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the present invention.

As shown in FIG. 1, the vehicle seat is supported by a pair of rail units 10, 10 arranged on a vehicle body floor A so as to be movable back and forth.

Each rail unit 10 includes a vehicle body-side rail 12 fixed to the vehicle body floor A via a support bracket 13, and a seat-side rail 11 that is fitted to the vehicle body-side rail 12 so as to be movable back and forth.

A vehicle seat is supported by a seat-side rail 11 via a flip-up mechanism 40 so as to be able to jump forward.

The flip-up mechanism 40 has a short link member 41 and a long link member 43 that are rotatably connected to the front and rear positions of the front end of the seat-side rail 11.

The tip ends of the short link member 41 and the long link member 43 are rotatably connected to the cushion frame 21 of the seat cushion 20.

The seat side rail 11, the cushion frame 21, the short link member 41 and the long link member 43 allow the seat cushion 20
A four-bar rotary chain is constructed that can flip up the rear end around the front end.

The short link member 41 is biased by the spring member 42 in the forward direction. Similarly, the long link member 43 is biased by the spring member 44 in the forward direction. That is, the seat cushion 20 is biased in the flip-up direction by both spring members 42 and 44.

A reclining device is provided at the rear end of the seat cushion 20.
The seat back 30 is supported via the 70 so as to be tiltable forward and backward.

The reclining device 70 includes a base member 72 fixed to the rear end portion of the cushion frame 21, and an arm member 71 fixed to the lower end portion of the back frame 31 of the seatback 30 pivotally supported by a reclining shaft 73.

A striker 51 is fixed to the rear end of the seat-side rail 11, and a pair of lock mechanisms 50, 50a for engaging and disengaging the striker 51 to restrain the vehicle seat from being flipped up are provided on the base member 72 of the reclining device 70. It is provided.

The lock mechanisms 50, 50a are provided with a latch member 52 which is swingable and engageable with and disengageable from the striker 51, and the latch member 52 is biased by a spring member (not shown) in a direction to engage with the striker 51.

Seat back 30 supported by the reclining device 70
The back frame 31 is composed of vertical frame members 33 and 33a having substantially U-shaped cross-sections on both sides, and an inverted U-shaped pipe frame member 32 is provided over the tops of the vertical frame members 33 and 33a to form a vertical frame. A lower frame member 37 is laid across the lower ends of the members 33, 33a.

A plate-shaped horizontal frame member 36 is installed on the vertical frame members 33, 33a below the pipe frame member 32, and a substantially L-shaped operation lever is provided at one end of the horizontal frame member 36 in both lateral directions.
60 is pivotally attached via an axis 63.

The pipe frame member 32 is fixedly provided with a pair of holder members for supporting the headrest, and the vertical frame members 33, 3 between the horizontal frame member 36 and the lower frame member 37.
Seat springs 38, 38 ... Are stretched over the 3a.

As shown in FIG. 2, the substantially L-shaped operating lever 60 has an operating portion.
61 and a wire hooking portion extending at a right angle from the base end of the operating portion 61
62, and the tip of the operating portion 61 is a vertical groove of the rocking regulating piece 34 extending from one vertical frame member 33 near the operating lever 60.
It passes through 35 and protrudes outward.

A lock mechanism 50, 50a provided on both sides of the seat is provided near the distal end of the wire retaining portion 62 of the operation lever 60 and the proximal end of the operation portion 61.
The wires 80 and 81 for performing the restraint release operation are separately hooked so as to be pulled as the operation lever 60 swings to the upper position of the operation portion 61.

The operation lever 60 is a wire member that is not shown in the drawing.
The operation portion 61 is urged in the counterclockwise direction in FIG. 1 at the lower position so as not to pull the 80 and 81.

One end 80a of the operating lever 60 is located near the proximal end of the operating portion 61.
The one wire 80 that has been hooked is passed through the wire insertion gap 39 generated between the one vertical frame member 33 near the operation lever 60 and the pipe frame member 32 welded to the inside of the vertical frame member 33. Latch member below the vertical frame member 33
It has been extended to 52.

The other end 80b of the wire 80 is pulled by the wire 80 when the operating portion 61 of the operating lever 60 swings to the upper position, and the latch member 52 is released.
Is engaged with a latching pin 53 projecting from the latch member 52 so as to swing and enter the restraint release state.

At the tip of the wire hooking portion 62 of the operating lever 60, one end 81
The other wire 81 to which a is hooked is extended from the operation lever 60 to the other vertical frame member 33a through the guide portion 36a formed at the lower end edge of the horizontal frame member 36.

The guide portion 36a is formed by bending a laterally long tongue piece extending from the lower end edge of the lateral frame member 36 so as to be wound into an annular cross-sectional shape over the entire width in the longitudinal direction.

The other vertical frame member located on the opposite side of the operation lever 60
The wire 81 extended by inserting the guide portion 36a into the 33a is
Further, the vertical frame member 3 is passed through the wire insertion gap 39a.
It extends to the latch member 52 below 3a.

The other end portion 81b of the wire 81 is pulled by the wire 81 when the operation portion 61 of the operation lever 60 swings to the upper position, and the other end portion 81b is a latch member.
The latching member 53 is connected to a latching pin 53 projecting from the latch member 52 so that the swinging member 52 swings into a restraint release state.

A pad member (not shown) is attached to the back frame 31 from the front side, and is covered with a trim cover to form the seat back 30.

Next, the operation will be described.

As shown in FIG. 1, when the vehicle seat is in a normal seated state, the seats are locked by the locking mechanisms 50, 50a provided on the base member 72 of the reclining device 70 that supports the seat back 30 on the seat cushion 20. Since the cushion 20 is restrained by the rail 11 on the seat side, the vehicle seat cannot be flipped up.

When the passenger gets on or off the vehicle, the operating portion 61 of the operating lever 60 is swung from the lower position to the upper position in opposition to the urging force of a spring member (not shown) in order to flip up the vehicle seat forward. The wires 80 and 81 respectively connected to the pair of lock mechanisms 50 and 50a are pulled from the tip of the wire hooking portion 62 of the lever 60 and the vicinity of the base end of the operating portion 61.

As a result, the operating force for the operating lever 60 is applied to the lock mechanism 5 on both sides of the seatback 30 via the separate wires 80 and 81.
The latch member 52 is transmitted to the latch members 52 of 0 and 50a, swings against the urging force of a spring member (not shown), and disengages from the striker 51 fixed to the seat side rail 11.

One end 80a of the operating lever 60 is located near the proximal end of the operating portion 61.
One of the wires 80, which is locked, passes through the wire insertion gap 39, is connected to the latch member 52 of the one lock mechanism 50 below the vertical frame member 33 with the other end 80b stretched, and is operated. Transmit power.

At the tip of the wire hooking portion 62 of the operating lever 60, one end 81
The other wire 81a to which a is hooked is a guide portion from the operation lever 60 to the lower end edge of the horizontal frame member 36 of the back frame 31.
36a is inserted and extended to the other vertical frame member 33a on the opposite side.

Further, the other wire 81 passes through the wire insertion gap 39a from the opening of the guide portion 36a and is connected to the latch member 52 of the other lock mechanism 50a below the vertical frame member 33a with the other end portion 81b stretched. Then, the operating force is transmitted.

As a result, the pair of lock mechanisms 50, 50a from the operating lever 60
Wires 80 and 81 connected to each other separately
And the seat spring 3 stretched over the back frame 31.
The pad members mounted on the back frame 31, 8, 38, ... Do not buffer.

The guide portion 36a is formed by bending a horizontally long tongue piece extending from the lower end edge of the horizontal frame member 36 so as to be wound into an annular cross-sectional shape over the entire width in the longitudinal direction.

When the latch member 52 is disengaged from the striker 51 of the rail 11 on the seat side and the vehicle seat can be flipped up, the spring member 4
From 2,44, the short link member 41 and the long link member 43 swing, and the vehicle seat jumps up around the front end portion of the seat cushion 20.

As a result, the rear portion of the seat cushion 20 is wide open, and a boarding / alighting space is secured.

After the boarding and exiting is completed, the vehicle seat is returned from the flipped-up position to the normal position, and the operation lever 60 is operated from the lower position to the upper position.

As a result, if the wires 80, 81 are pulled to swing the latch member 52 and then engage with the striker 51 of the rail 11 on the seat side, the lock mechanisms 50, 50a are in a restrained state, and the vehicle seat is in the original state. The seats are restrained by the lock mechanisms 50, 50a.

[Advantage of Invention] According to the vehicle seat of the present invention, the wire connecting the operation lever to the lock mechanism provided on the lower side of the other side of the seat back is provided with the guide portion formed at the lower end edge of the lateral frame member. Since it is inserted and extended to the other vertical frame member, it is connected to the lock mechanism along the inside of the vertical frame member, so the wire does not buffer with the seat spring or pad member, so that the lock mechanism is released. It is possible to improve operability and prevent the pad member and the like from being damaged by the wire.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention,
FIG. 1 is a perspective view of a vehicle seat, FIG. 2 is a front view of a lateral frame member and a guide portion, and FIG. 3 is a perspective view of a conventional vehicle seat. 10 …… Rail unit 20 …… Seat cushion 21 …… Cushion frame 30 …… Seat back 31 …… Back frame 33,33a …… Vertical frame member 36 …… Horizontal frame member 36a …… Guide part 40 …… Bounce mechanism 50,50a …… Lock mechanism 60 …… Operating lever 70 …… Recliner 80,81 …… Wire

Claims (1)

[Scope of utility model registration request] 1. A pair of lock mechanisms for restraining the seat back or the seat from flipping up are provided below both sides of the seat back, and a wire for performing a release operation of the restraint is connected to each of the pair of lock mechanisms. In a vehicle seat provided with an operation lever capable of pulling the wire on a back frame, the seat back frame comprises a pair of vertical frame members constituting both sides, and a plate-shaped horizontal frame member, An operating lever of a lock mechanism is pivotally attached to one end of each of the lateral frame members in both directions, and the operating mechanism extends along the inner side of one vertical frame member near the operating lever to provide a lock mechanism below the vertical frame member. Connect one wire, and insert the other wire from the operating lever through the guide part formed by bending the lower edge of the plate frame member into an annular cross section. Extending to a frame member, a vehicle seat, characterized in that coupled to the locking mechanism of the lower vertical frame member and along the inner side of said longitudinal frame members.