JPH0729006Y2 - Vehicle seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention supports a seat back having a heater therein at a rear portion of a base member, and a seat via a pivot member provided at a front end portion of the base member. The present invention relates to a vehicle seat in which a back can be flipped forward and pivotally supported on a seat cushion side.

"Prior Art" As a conventional vehicle seat of this type, there is, for example, one shown in Figs. 4 and 5.

That is, the heater 3 installed in the seat back 2 pivotally supported at the rear portion of the seat cushion 1 so as to be able to flip up via the base member 5 passes through the rear of the rear end of the seat cushion 1 from the seat lower side to the seat side. Wiring 4 that extends to the lower edge of the back
Are connected.

The wiring 4 of the heater from the lower end of the seat back 2 to the connector 4a below the seat cushion 1 is set to a length that allows the seat back to be sufficiently flipped up.

[Problems to be solved by the invention] However, in such a conventional vehicle seat, when the seat back 2 is flipped up, the wiring 4 of the heater 3 pulled out from the seat lower side seats the seat back 2. When returning to the state, there is a problem in that the seat cushion 1 is not retracted to the lower side and is slackened behind the seat cushion 1. Therefore, the seat cushion 1 has to be retracted so as not to be caught, which is complicated.

The present invention has been made in view of such a conventional problem, and it is possible to return the seat back that has been flipped up to the seated state and to pull the wiring of the heater of the seat back under the seat. It is an object of the present invention to provide a vehicle seat that solves the above problems.

[Means for Solving the Problems] The gist of the present invention for achieving such an object is to provide a seat back having a heater therein at a rear portion of a base member and at the front end portion of the base member. A vehicle seat in which a seat back is pivotally supported on a seat cushion side so as to be capable of flipping up forward through a pivot member, wherein the heater extends from a seat lower side along a rear part of the seat cushion so as to pass behind the seat cushion. Connecting the wiring, the pivot member is fixed to the front end of the base member, the normal position when the seat back is seated on the pivot member,
An arm member that rocks with the rotation of the pivot member is fixed to the rearward position when the seat back is flipped up, and when the arm member swings to the rearward position at the tip of the arm member, the heater In the vehicle seat, the wiring of the heater is locked so that the wiring of the heater is drawn to the lower side of the seat when the arm member returns to the normal position while the wiring is drawn from the lower side of the seat. .

"Operation" In a normal seated state, the wiring of the heater is extended from the lower side of the seat along the rear portion of the seat cushion without sagging and is connected to the heater provided in the seat back. .

When getting on or off the vehicle, the seat cushion is urged to lift the seat back slightly forward.

As a result, the base member that supports the seat back at the rear portion is tilted forward with the rotation of the pivot member around the pivot member that is fixed to the front end, the seat back jumps forward, and the rear portion is wide open to secure a boarding / alighting space. It

At this time, along with the rotation of the pivot member due to the flip-up operation of the seat back, the arm member swings about the pivot member from the normal position when the seat member is seated to the rearward position when the seat back is flipped up.

When the arm member swings from the normal position to the rearward position, the wiring of the heater is pulled out from the lower side of the seat, and there is a margin in length, so that the heater reaches the seat back heater which is separated by the flip-up.

When the passenger is finished getting in and out and the seat back is returned to its original position, the pivot member fixed to the base member rotates in the opposite direction to the one at the time of flipping up, and at the same time, the arm member moves from the backward position to the original position. It swings back to the normal position and returns.

When the arm member swings from the rearward position to the normal position, the wiring of the heater is pulled under the seat along the rear portion of the seat cushion so as to pass behind the seat cushion.

As a result, the wiring of the heater does not sag behind the seat cushion while protruding from the underside of the seat.

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

1 to 3 show an embodiment of the present invention.

As shown in FIG. 1, the vehicle seat 10 is supported on a vehicle body floor (not shown) so as to be movable back and forth via a pair of rail units 20 and 20a.

The rail unit 20 includes a vehicle body-side rail 21 fixed to a vehicle body floor (not shown) via a support bracket 26, and a seat-side rail 22 fitted to the vehicle body-side rail 21 so as to be movable back and forth. .

The rail 21 on the vehicle body side is formed in a substantially C-shaped cross section, and an opening groove 23 extending in the longitudinal direction is formed in the upper surface thereof.
Support brackets 26 are attached to the front and rear ends of the lower surface of the rail 21 on the vehicle body side, respectively.

The seat-side rail 22 is formed in a substantially inverted T-shaped cross section in which members having an L-shaped cross section are fixedly joined back to back, and has a substantially horizontal fitting portion.
24 and a seat mounting portion 25 that is substantially at a right angle, and the seat mounting portion 25 passes through the opening groove 23 of the rail 21 on the vehicle body side and projects upward from the upper surface.

The inner side surface of the seat mounting portion 25 of the seat-side rail 22 is fixed to both ends of the seat cushion 30.

A rectangular heater 50 is internally provided between the trim cover of the backrest portion 41 of the seat back 40 and the pad member, and the heater 50 includes the seat cushion 30 along the rear end 30a of the seat cushion 30. A wiring 51 extending from the lower side of the seat to the lower end of the seat back 40 is connected so as to pass the rear side.

A connector 52 is provided at the tip of the wiring 51 located under the seat. The heater 50 is composed of a heating element by electric resistance, and the connector 52 of the wiring 51 directly connected to the heater 50 is connected to the connector 54 of the wiring 53 on the vehicle body side.

The seat back 40 is supported by the rear end 30a of the seat cushion 30 via a reclining device 60 so as to be able to flip up forward.

The reclining device 60 has a base member 61 pivotally attached to the outer surface of the seat mounting portion 25 of the rail 22 on the seat side, and an arm bracket 62 fixed to the side portion of the seat back 40 pivotally supported by a reclining shaft 63. Become.

The arm bracket 62 can be tilted back and forth and held at an appropriate reclining angle position by a reclining restraint mechanism (not shown).

The base member 61 of the reclining device 60 has a front end portion 61.
The seat back 40 can be flipped up by rotating about a, so that the front end portion 61a of the base member 61 is pivoted to the outer surface of the seat mounting portion 25 of the rail 22 on the seat side. A pivot member 70 for mounting is fixed.

As shown in FIG. 2, when the seat back 40 is in a normal seated state, an arm member 71 in a normal position extending substantially downward from the tip of the pivot member 70 is fixedly attached to the tip of the pivot member 70. ing.

The pivot member 70 and the arm member 71 are integrally formed by bending one shaft member into an L shape as shown in the figure, and the arm member 71 rotates the pivot member 70 when the seat back 40 is flipped up. At the same time, it swings to the rearward position as shown in FIG.

A wire 51 of the heater 50 extending from the lower end of the seat back 40 is locked to a front end portion 71a of the arm member 71 at a predetermined position.

A lock mechanism that restrains the rotation of the base member 61 is provided substantially in the middle of the lower end of the base member 61.

The lock mechanism includes a striker 81 protruding from the outer surface of the seat mounting portion 25 of the seat-side rail 22, and a hook member 82 that is engaged with and disengaged from the striker 81 to restrain the rotation of the base member 61.

Next, the operation will be described.

As shown in Fig. 1, in the normal sitting state, the seat back
The wiring 51 directly connected to the heater 50 of the seat 40 is provided along the rear end 30a of the seat cushion 30 without sagging, and
It is extended from the bottom of the seat so as to pass behind 0.

When a switch (not shown) of the heater 50 is turned on, electricity is supplied from the battery on the vehicle body side through the wirings 51 and 53 to heat the heater 50 and directly heat the seated person from the seat side.

In the normal seated state, the seat mounting portion 25 of the rail 22 on the seat side
The rotation of the base member 61 pivotally mounted on the pivot member 70 is restricted by the lock mechanism.

When getting on or off the vehicle, first, the restraint of the rotation of the base member 61 by the lock mechanism is released. When the hook member 82 is operated to swing in the counterclockwise releasing direction in FIG. 2, the hook member 82 is disengaged from the striker 81, and the rotation restraint of the base member 61 is released.

Next, the seat back 40 supported by the reclining device 60 rotatable around the pivot member 70 of the base member 61 is urged to the seat cushion 30 so as to be lifted slightly forward.

As shown in FIG. 3, the base member 61 of the reclining device 60 that supports the seat back 40 is tilted forward with the rotation of the pivot member 70 around the pivot member 70 fixed to the front end portion 61a of the seat back 40. Jumps forward,
The rear of the seat is wide open to secure a boarding / alighting space.

At this time, the arm member 71 also swings counterclockwise about the pivot member 70 as the pivot member 70 rotates counterclockwise in FIG. The seat back 40 shown in FIG. 3 swings from the normal position in the seated state shown in FIG. 3 to the rearward position when the seat back 40 jumps up.

When the arm member 71 swings from the normal position to the rearward position, the wiring 51 of the heater 50 locked at the tip of the arm member 71 is pulled out from the lower side of the seat, and there is a margin in the length, so that the wire is lifted. It reaches the heater 50 of the seat back 40 which is far away.

When the seat back 40 is returned to the original seated state after finishing getting in and out, the pivot member 70 integrally fixed to the base member 61 of the reclining device 60 rotates clockwise in FIG.

At this time, the operation of returning the seat back 40 to the seated state causes the pivot member 70 to rotate and the arm member 71 to swing about the pivot member 70 in a direction opposite to that at the time of the flip-up, so that the heart back shown in FIG. The arm member 71 swings back to the normal position in the initial seated state shown in FIG.

As a result, the heater 50 locked to the tip of the arm member 71.
The wiring 51 is drawn to the lower side of the seat along the rear end 30a of the seat cushion 30 so as to pass behind the seat cushion 30, so that the wiring 51 is behind the seat cushion 30 and protrudes from the lower side of the seat. I don't dangle.

A hook member 82, which is substantially in the middle of the lower end of the base member 61 of the reclining device 60 that supports the seat back 40 that has been returned to the normal seated state, engages with the striker 81 projecting from the seat mounting portion 25 of the seat-side rail 22. Then, the seat back 40 is held in the original seated state.

[Advantage of the Invention] According to the vehicle seat of the present invention, the seat back having the heater therein is fixed to the pivot member fixed to the front end portion of the base member that supports the seat back so that the seat back can be flipped up. Since the arm member that adjusts the length of the wiring that swings from the seat lower side to the heater is fixed with the rotation, the wiring of the heater of the seat back is set under the seat when returning the seat back that has been flipped up to the seated state. It is possible to provide a vehicle seat that can be retracted to the side and in which the wiring of the heater does not sag behind the seat cushion.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a perspective view of a vehicle seat, FIG. 2 is a side view of a seated vehicle seat, and FIG. FIGS. 4 and 5 show a conventional vehicle seat in a state where the vehicle seat is in a standing state, FIG. 4 is a side view of the vehicle seat in a flipped-up state, and FIG. 5 is a seated vehicle. It is a side view of a sheet for use. 10 …… Vehicle seat 20,20a …… Rail unit 21 …… Vehicle side rail 22 …… Seat side rail 30 …… Seat cushion 40 …… Seat back 41 …… Backrest section 50 …… Heater 51,53 Wiring 60 Reclining device 61 Base member 62 Arm bracket 70 Axis member 71 Arm member

Claims (1)

[Scope of utility model registration request] 1. A seat back in which a heater is installed is supported by a rear portion of a base member, and a seat back is pivoted to a seat cushion side so that the seat back can be flipped forward through a pivot member provided at a front end portion of the base member. In the supported vehicle seat, the heater is connected to a wiring extending from a seat lower side so as to pass behind the seat cushion along a rear portion of the seat cushion, and the pivot member is fixed to a front end portion of a base member, Normal position when the seat back is seated on the pivot member,
An arm member that rocks with the rotation of the pivot member is fixed to the rearward position when the seat back is flipped up, and when the arm member swings to the rearward position at the tip of the arm member, the heater A vehicle seat characterized in that the wiring of the heater is locked so that the wiring of the heater is pulled in from the lower side of the seat while the wiring of the heater is pulled back to the lower side of the seat when the arm member returns to the normal position.