JPH08196368A - Seat reclining device - Google Patents

Abstract

PURPOSE: To provide a seat reclining device allowing the smooth operation of a knob via the reduction of wire slide resistance, when a back rest is erected after a forward reclining operation. CONSTITUTION: Regarding a seat reclining device having a knob laid on the upper section of a back rest for the forward reclining operation thereof, as well as wiring in the back rest for jointing the knob to the device, an oscillation bracket 21 has one end rotatably connected to a base plate 1 or a holder plate 19 via a shaft, and a wire tube 23 externally coupled to the wire 25 is jointed to the other end thereof for holding the wire 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat reclining device, and in particular, a knob for tilting forward is provided on an upper portion of a seat back, and a wire is routed in the seat back to connect the knob and the seat reclining device to the wire. Related to the structure connected by.

[0002]

2. Description of the Related Art In a seat reclining device, a knob for tilting forward is provided on an upper portion of a seat back, and a wire is arranged in the seat back to connect the knob and the seat reclining device with a wire. The end of the reclining device is attached to the bracket fixed to the holder plate.

[0003]

However, since the holder plate and the bracket do not move when the seat back is tilted forward, the wire tube is also bent,
The bending curvature near the bracket mounting portion of the wire tube becomes small. Therefore, there is a drawback that the sliding resistance of the wire becomes large and the operation of the knob when standing up the seat back that is tilted forward becomes heavy.

In view of the above circumstances, the present invention provides a seat reclining device in which the sliding resistance of the wire is reduced and the knob operation is lightened when the seat back is erected after it is tilted forward.

[0005]

A seat reclining device according to the present invention is provided with a knob for tilting forward in the upper part of a seat back, and a wire is routed in the seat back to connect the knob and the seat reclining device with the wire. In the seat reclining device having the connected structure, a wire tube for penetrating and holding the wire is connected to the other end of a swing bracket whose one end is rotatably attached to a base plate or a holder plate. To do.

[0006]

When the seat back is tilted forward, if the wire tube is driven and tries to bend, the swing bracket rotates in the bending direction to greatly loosen the bending curvature of the wire tube. Without increasing the sliding resistance of the wire when standing up,
Knob operation is lighter than before.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. As shown in FIG. 1, an arm 3 is rotatably attached to a base plate 1 fixed to a vehicle body via a center shaft 2. A seat back (not shown) is connected and fixed to the arm 3.

The lower end of the arm 3 is formed in a predetermined arcuate portion 4 centered on the center shaft 2, and the teeth 5, 5a are formed in the arcuate portion 4 at a distance from each other. Teeth 5,5a
A lower tooth 7 having a tooth portion 6 that meshes with is rotatably attached to the base plate 1 via a shaft 8.

The lower tooth 7 has a cam concave portion 9 on the side opposite to the tooth portion 5, and a cam 11 having a cam portion 10 engaged with and disengaged from the cam concave portion 9 is movably attached to the base plate 1 via a shaft 12. ing.

The lower tooth 7 is provided with a pin 13 projecting from the cam portion 10 with the shaft 12 as the center, and one end portion of a link 15 having a long hole 14 with which the pin 13 engages has one end.
It is rotatably mounted on the base plate 1 via a shaft 6.

The link 15 is an ammunition machine 1 such as a coil spring.
7, a rotational bias is always applied clockwise about the shaft 16. The shaft 16 penetrates the base plate 1 and connects the operation lever 18 and the link 15 so as to be integrally rotatable. Therefore, the shaft 16 is engaged with the link 15 in a modified cross section such as an oval shape.

The center shaft 2 and the two shafts 8,
A holder plate 19 is attached to 12 to hold these shafts with the base plate 1 in a two-sided manner, and one end of a swing bracket 21 is rotatably attached to the holder plate 19 via a shaft 20. There is.

The swing bracket 21 is an elongated plate body, and the other end is bent into an L shape to form a stopper 22. The end 23a of the wire tube 23 is inserted into the through hole formed in the stopper 22 and fixed with the nut 24, and the wire 2 penetrating the wire tube 23 is inserted.
5 extends toward the link 15.

The wire tube 23 has its intermediate portion fixed to the arm 3 by an intermediate bracket 3a to determine the position of the wire tube 23 arranged in the seat back.

A wire end 26 is connected to the end of the wire 25, and the wire end 26 has a long hole 2 of a predetermined length.
7 are formed. This wire end 26 is link 1
5 has a pin 28 projecting from the other end thereof, and the pin 28 has a long hole 2
7 is engaged. Although not shown, the wire 25 is
The wire end 26 can be moved up and down on a normal road by being extended into the seat back and connected to a knob provided on the seat back.

The inner end of the spiral spring 29 is locked to the center shaft 2, and the outer end of the spiral spring 29 is locked to a pin 30 projecting from the arm 3 so that the arm 3 is always maintained. It is urged to rotate counterclockwise about the center shaft 2.

Next, the operation of the above embodiment will be described.
To adjust the reclining seat, in FIG. 1, when the operation lever 18 is rotated counterclockwise about the shaft 16, the link 15 is rotated counterclockwise, and the cam 11 is moved through the elongated hole 14 and the pin 13. The cam portion 10 of the lower tooth 7 enters the cam concave portion 9 of the lower tooth 7 and pushes down the lower tooth 7, and the lower tooth 7 rotates counterclockwise around the shaft 8, whereby the tooth portions 5 and 6 are disengaged and the arm 3 Becomes rotatable about the center shaft 2.

Therefore, if there is no seated person, the arm 3
That is, the seat back is automatically inclined forward by the bias of the spiral spring 29. If there is a seated person, the seated person is stopped on the back and stopped, so if the desired tilt angle is adjusted and the operation lever 18 is released, the state is locked.

Next, when a knob (not shown) provided on the upper portion of the seat back is rotated to tilt the arm 3, that is, the seat back forward, the wire 25 is pulled upward so that the link 15 causes the shaft 16 to move. When the cam 11 rotates counterclockwise around the center and the cam 11 rotates around the shaft 12 clockwise, the lower tooth 7 and the teeth 5 and 6 of the arm 3 are disengaged, and the arm 3 tilts forward. To do.

Then, when the seat back is pushed to the maximum extent to the front side, the lower tooth 7 is moved as shown by the phantom line in FIG.
The tooth portion 6 of the can engages with the tooth portion 5a of the arm 3 which is tilted forward to lock the state.

In this case, the wire tube 23 is also bent in association with the inclination of the arm 3. When the wire tube 23 is about to bend, the swing bracket 21 rotates counterclockwise about the shaft 20, so that the bending curvature of the wire tube 23 becomes large and gentle. Therefore, the sliding resistance of the wire 25 in the wire tube 23 can be suppressed to be small when operating the knob to raise the arm 3. Therefore, the operation of the wire 25 becomes smooth.

Thus, by connecting the wire 25, which is to be bent in accordance with the forward tilting motion of the arm 3, to the link 15 via the swing bracket 21 whose one end is rotatably supported by the holder plate 19, Since the swing bracket 21 is rotated in association with the rotation of the arm 3, the bending curvature of the wire tube 23 can be greatly reduced, and the sliding resistance of the wire 25 can be suppressed to be small.

Although the spiral spring 29 for biasing the arm 3 to rotate in the counterclockwise direction is provided in this embodiment, the spiral spring 29 may not be provided, and in this case, the inclination angle of the seat back is adjusted. Is to be adjusted manually by the seated person.

[0024]

According to the present invention described above, the wire to be bent in accordance with the forward tilting motion of the arm is connected to the operating lever via the swing bracket whose one end is pivotally supported on the holder plate. By connecting, the swing bracket rotates in conjunction with the rotation of the arm, so that the bending curvature of the wire tube can be greatly moderated, and the sliding resistance of the wire can be suppressed to a small value. The resistance when operating the knob to raise the seat back after tilting forward is reduced, and it becomes lighter.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

[Figure 2] Side view

FIG. 3 is a partial sectional plan view.

[Fig. 4] Side view of main parts

[Explanation of symbols]

 1 ... Base plate 2 ... Center shaft 3 ... Arm 15 ... Link 18 ... Operating lever 19 ... Holder plate 21 ... Oscillating bracket 23 ... Wire tube 25 ... Wire 27 ... Long hole 28 ... Pin

Claims (1)

[Claims] 1. A seat reclining device having a structure in which a knob for tilting forward is provided on an upper part of a seat back, and a wire is arranged in the seat back to connect the knob and the seat reclining device with a wire, in which a base plate or a holder plate is provided. A seat reclining device characterized in that a wire tube for penetrating and holding the wire is connected to the other end of a swinging bracket whose one end is rotatably attached to the pivot bracket.