JPH0742341Y2 - Both rock recliners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a reclining device, in particular, a double lock recliner of a type in which devices are provided on the left and right sides of a seat cushion, respectively, and when one of them is operated, the other is interlocked. is there.

[Prior Art] Generally, in a reclining seat for a vehicle, a seat back is rotatably supported in a front-rear direction on both left and right rear portions of a seat cushion, and an inclination angle of the seat back can be arbitrarily set. In the apparatus, a reclining device is usually used on either the left or right side, and a hinge is used on the other side. But in this case, the hinge, unlike the reclining device, has no locking mechanism, so
Since the left and right sides of the seat back are twisted and it is uncomfortable to sit on, the reclining devices having symmetrical configurations are often used on both the left and right sides. Therefore, it is troublesome to use the reclining devices on both the left and right sides and operate the release levers individually on the left and right sides, which is not preferable. Therefore, one of them is the main driving side and the other is the driven side, which are connected by the interlocking rod, and one locking lever is used to interlock both locking members. That is, as shown in FIG. 6, the interlocking rod 16
One end of the lever 17a is fixedly attached to the other end of the lever 17a, and one end of the link lever 18a is rotatably connected to the other end of the lever 17a by a pin 20a. The pin 25 is pivotally supported, and the pin 25 is projectingly provided on the other end of the link lever 18a. The pin 25 is engaged with the long hole 26 formed in the base plate 1a, and the pin 25 is provided with the second tooth member 7a. The lever 27 for moving is connected. The interlocking rod 16 is a drive-side device (not shown, having an operating lever).
In addition, it is connected to FIG. 1).

[Problems to be Solved by the Invention] However, according to the above-mentioned conventional lock recliners, when the buckle device is attached to the base plate (inner side) on the driven side, the link lever pivots to interfere with the buckle device. And therefore,
The buckle device cannot be attached to the base plate. In this way, if the link portion interferes with the buckle device, the interlocking mechanism will not work and both lock recliners cannot be created in the first place.

Therefore, this invention has been made for the purpose of eliminating the above-mentioned inconvenience of the interlocking structure in both lock recliners.

[Means for Solving the Problems] In order to solve the above problems, the present invention connects a pair of left and right reclining devices with interlocking rods, and connects a first link lever to a release lever shaft of one reclining device having a release lever. A second link lever that is coupled and pin-engages with the first link lever is pivotally attached to the interlocking rod, and a third link lever is pivotally attached to the interlocking rod, and is pin-engaged with the third link lever. In both lock recliners in which the fourth link lever is pivotally attached to the rotation shaft of the lock member of the other reclining device having no release lever, the third link lever is inside the base plate,
The fourth link lever is arranged on the outside of the base plate, and the pin of the fourth link lever penetrates the arc-shaped long hole formed in the base plate to engage with the third link lever. It is composed.

[Operation] According to the present invention having the above configuration, the third link lever is arranged inside the base plate, the fourth link lever is arranged outside the base plate, and the pin of the fourth link lever is formed in an arc shape formed in the base plate. Since the third link lever penetrates through the long hole and engages with the third link lever, it is possible to secure a space for mounting the buckle device on the back surface of the base plate that does not hinder the rotation of these link levers, and also to hinder the interlocking structure. I won't

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. First
2 and 2 respectively show a reclining device. FIG. 1 shows the outer side of the seat on the driving side, and FIG. 2 shows the inner side of the seat on the driven side. FIG. 3 is a plan view of both lock recliners in which they are connected so that they can be interlocked. The two lock recliners are fixed to the left and right sides of the rear portion of the seat cushion, and are usually mounted on the seat slide device, but the seat slide device is omitted.

The reclining device on the driving side will be described. As shown in FIG. 1, an arm 3 is rotatably supported by a base plate 1 via a shaft 2, and the arm 3 has a predetermined centering on the shaft 2. First tooth portion 4 is formed on the peripheral edge of the circular arc
The tooth member 5 is integrally fixed and connected, and its tooth portion 4 is
A second tooth member 7 having a tooth portion 6 that meshes with is pivotally supported on the base plate 1 so as to be swingable about a shaft 8. A recess 9 is formed in the second tooth member 7, and a lock member 11 having a protrusion 10 that can be engaged with and disengaged from the recess 9 is integrally fixed to a release lever 12. The release lever 12 is rotatably supported by the base plate 1 via a shaft 13, and a coil spring 14 is elastically mounted between a part of the release lever 12 and the base plate 1 to urge the release lever 12 to rotate counterclockwise in the drawing. ing. In addition, the spring 3 is attached to the arm 3.
Has one end thereof locked, the other end of the mainspring spring 15 is locked to the shaft 2, and the arm 3 is biased to rotate clockwise in the drawing.

The reclining device on the driven side will be described. As shown in FIG. 2, an arm 3a is rotatably supported by a base plate 1a via a shaft 2a, and a first tooth member 5a is connected to the arm 3a. A second tooth member 7a meshing with the first tooth member 5a is rotatably supported by the base plate 1a via a shaft 8a. Then, the lock member 11a having the convex portion 10a that engages with and disengages from the concave portion 9a of the second tooth member 7a becomes the shaft 13
It is pivotally supported by the base plate 1a so as to be rotatable around a. A part of the lock member 11a and the base plate 1a
A coil spring 14a is mounted between the lock member 11a and the spring.
Rotational force is exerted in the clockwise direction in the figure around 13a.
Reference numeral 15a is a mainspring spring that urges the arm 3a to rotate clockwise about the axis 2a in the drawing. Although not shown, the arms 3 and 3a are fixed to the seat back.

Reference numeral 24 in FIG. 1 and reference numeral 24a in FIG. 2 are holder plates for holding the shafts 2, 8 and 13 opposite to the base plates 1 and 1a, respectively.

As shown in FIG. 3, the reclining device is provided with interlocking rods 16 that connect the respective shafts 2, 2a, and the second link levers 17 having different lengths are provided at both ends of the interlocking rod 16. The third link lever 17a is pivotally mounted. On the base plate 1, a crank-type first link lever 18 is rotatably supported on a shaft 13 of a release lever 12, and
Pin 21 between the first link lever 18 and the release lever 12
To connect (see FIG. 1). Pin 21 is base plate 1
An arcuate elongated hole 23 drilled around the shaft 13 is passed through. In addition, the base plate 1a has a fourth link lever 18
The a is arranged outside the base plate 1a and is rotatably supported by the shaft 13a integrally with the lock member 11a (see FIG. 4).
Therefore, the pin 20a projecting from the tip of the fourth link lever 18a has the arc-shaped elongated hole 22 formed in the base plate 1a.
(See FIG. 2). As described above, by disposing the fourth link lever 18a outside the base plate 1a, the seat belt buckle attachment end connected to the base plate 1a does not hinder the rotation of the fourth link lever 18a. The second link lever 17 is shorter than the third link lever 17a, and the first link lever 18 is pin-engaged,
A fourth link lever 18a shorter than the first link lever 18 is pin-engaged with the third link lever 17a. The second and third link levers 17 and 17a are attached and fixed to the interlocking rod 16 at a predetermined same angle, and the second link lever 17 and the first link lever 18 are
A long hole 19 bored in the longitudinal direction of the second link lever 17 and a pin 20 bored at the end of the first link lever 18 are engaged with each other in a pin-engaging manner, and the third link lever 17a and the third link lever 17a are engaged with each other. The 4-link lever 18a is engaged with a deformable hole 19a formed in the width direction of the third link lever 17a and a pin 20a protruding from the end of the fourth link lever 18a so as to be interlocked with each other.

The operation of the above embodiment will now be described. When the release lever 12 is rotated upward in the reclining adjustment (shown in phantom in FIG. 1), the release lever 12 is rotated by the shaft 13
The first link lever 18 connected by the pin 21 rotates clockwise about the shaft 13, and the pin 20 is engaged with the elongated hole 19 immediately after the rotation. Two
Rotate the link lever 17 counterclockwise, and
16 is rotated, and the lock member 11 is rotated clockwise, the convex portion 10 is engaged with the concave portion 9 of the second tooth member 7, and the second tooth member 7 is rotated counterclockwise about the shaft 8. Rotate to. Therefore, the engagement between the second tooth member 7 and the first tooth member 5 is released, so that the arm 3 does not rotate counterclockwise in the drawing by the force of the spring spring 15. Then, when the interlocking rod 16 rotates, the third link lever 17a rotates, the fourth link lever 18a rotates counterclockwise about the shaft 13a, and the lock member 11a rotates counterclockwise about the shaft 13a. The second tooth member 7a rotates in the clockwise direction about the shaft 8a as the convex portion 10a engages with the concave portion 9a.
The second tooth member 7a disengages from the first tooth member 5, so that the arm 3a does not rotate clockwise in the drawing by the force of the mainspring spring 15a. Therefore, the locks on the driving side and the driven side are released, and the arms 3 and 3a are rotated counterclockwise about the shafts 2 and 2a by the force of the springs 15 and 15a, respectively.

[Advantage of Invention] According to the above-described invention, since a part of the link portion of the driven device is arranged inside the base plate, a space for attaching the buckle device to the base plate is provided.
The link part can be secured without any trouble, and a part of the link becomes unnecessary. Also, since the lever that rotates the second tooth member and the third link lever that is connected to the interlocking rod are integrated, the number of parts is reduced, and because one link (lever) is reduced, there is a loss in transmission force and rattling. Etc. are reduced and the quality is improved.

[Brief description of drawings]

FIG. 1 is a front view of a reclining device on a driving side showing an embodiment of the present invention, FIG. 2 is a front view of a reclining device on a driven side, and FIG. 3 is a linking rod for reclining devices on a driving side and a driven side. 4 is a partial sectional view, FIG. 5 is a side view showing the relationship between the interlocking rod and the link lever, and FIG. 6 is a main part plan view of a conventional example. 1,1a… base plate, 2,2a… spindle, 3,3a… arm, 1
1, 11a ... Lock member, 12 ... Release lever, 16 ... Interlocking rod, 17 ... Second link lever, 17a ... Third link lever, 1
8 ... 1st link lever, 18a ... 4th link lever, 19 ... Oblong hole, 19a ... Deformation hole, 20,20a ... Pin, 22 ... Arc-shaped oblong hole

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right reclining devices are connected by interlocking rods, a first link lever is connected to a release lever shaft of one reclining device having a release lever, and a second pin is engaged with the first link lever. A link lever is pivotally attached to the interlocking rod, a third link lever is pivotally attached to the interlocking rod, and a fourth link lever pin-engaging with the third link lever is attached to the other reclining device having no release lever. In both lock recliners pivotally attached to the rotation shaft of the lock member, the third link lever is arranged inside the base plate, the fourth link lever is arranged outside the base plate, and the pin of the fourth link lever is formed in the base plate. Both lock recliners characterized by engaging with a third link lever by penetrating an arc-shaped elongated hole provided .