JP2551121Y2 - Seat reclining device - Google Patents

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 more particularly, to a structure in which, when the arm is tilted forward, the arm rotates while a sliding member integrally provided on the arm slides against a guide member. To an improved seat reclining device.

[0002]

2. Description of the Related Art Seat reclining devices of this kind are:
An arm is pivotally mounted on a base plate attached to the side of the seat, and between the base plate and the arm, there are an upper part, a lower tooth detachable from the upper part, and an operating member for operating the lower tooth. A lock mechanism is provided, and a sliding member having a cam surface is integrally provided on the arm, and a guide member having a guide surface for slidingly contacting the cam surface of the sliding member is integrally provided on the operating member. , When the arm leans forward,
The arm is configured to rotate while the cam surface of the sliding member slides against the guide surface of the guide member, and the lower tooth is kept detached from the upper part, thereby miniaturizing the shape of the upper part. Things are known.

[0003]

However, in the above-mentioned conventional seat reclining device, a gap is formed between the arm and the base plate due to the sliding contact member provided on the arm. Due to this gap, there is a problem that the lock mechanism and the like are visible and the appearance is poor.

[0004] The present invention has been made to solve the above-mentioned problems of the prior art.
It is an object of the present invention to provide a seat reclining device capable of concealing a gap generated between an arm and a base plate by a sliding contact member.

[0005]

In order to achieve the above object, in the seat reclining device of the present invention, an arm is pivotally mounted on a base plate mounted on a side of a seat, and an upper is provided between the base plate and the arm. A lock mechanism comprising a tooth, a lower tooth that can be disengaged from the upper tooth, and an operating member that operates the lower tooth is provided. Further, a sliding contact member having a cam surface is integrally provided on the arm, and A guide member having a guide surface for slidingly contacting the cam surface of the contact member is provided integrally with the operating member, and the arm is brought into sliding contact with the guide surface of the guide member when the arm is tilted forward. A seat reclining device configured to rotate, wherein a sliding contact member is provided between an arm and a base plate. Concealment means for concealing during is characterized in that provided in the base plate and / or arms.

[0006]

According to the present invention, the gap formed between the arm and the base plate can be concealed by the concealing means by the sliding contact member, so that the appearance can be improved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is an explanatory front view of a seat reclining device, FIG. 2 is an explanatory side view taken along the line II-II of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line III-III in which the operation lever is removed, FIG.
FIG. 5 is an explanatory diagram showing a state of the lock mechanism at the time of unlocking.

In the drawing, reference numeral E denotes a seat reclining device, in which an arm 20 is pivotally mounted on a base plate 10 mounted on a side portion of a seat, an upper part 30 and an upper part between the base plate 10 and the arm 20. A lock mechanism R comprising a lower tooth 40 which can be disengaged from the lower tooth 30 and an operating member 50 for operating the lower tooth 40 is provided.
2a, a guide surface 2 for slidingly contacting a cam surface 22a of the sliding member 22.
The guide member 23 formed with 3a is provided integrally with the operating member 50, and the arm 20 rotates while the cam surface 22a of the sliding contact member 22 slides against the guide surface 23a of the guide member 23 when the arm 20 is tilted forward. It is configured to be.

The present invention particularly provides a concealing means G for concealing a gap C generated between the base plate 10 and the arm 20 by the sliding member 22.
Alternatively, it is provided on the arm 20.

Next, the structure of the present invention will be described in more detail.

The arm 20 is attached to the side of the seat back SB, and has a first pivot 3 implanted below the seat back SB.
1 is attached to the base plate 10 attached to the side portions of the seat cushions SC.

The upper tooth 30 is formed integrally with the arm 20, and has an arc-shaped tooth portion 30a centered on the first pivot 31 at its lower edge. A spiral spring 21 for rotating the arm 20 counterclockwise is wound around the first pivot 31.

The sliding member 22 is provided integrally with the arm 20 on the base plate 10 side, and has an arc-shaped cam surface 22a centered on the first pivot 31. As shown in FIG. 1, the emboss 25 as the concealing means G on the arm 20 side is provided on the arm 20 so as to protrude toward the base plate 10 near the right side of the cam surface 22 a of the sliding contact member 22. A large arc portion 25a and a small arc portion 25b centered on the pivot 31 of the sliding contact member 22.
It is set to be almost the same as the height. Base plate 1
The diaphragm 11 which is the concealing means G on the 0 side is disposed almost at the upper right half of the upper end of the base plate 10.
It protrudes to a position where it abuts the side surface.

The lower tooth 40 has a base pivotally mounted by a second pivot 41 implanted in the base plate 10, and has a toothed portion 3 of the upper part 30 at an upper edge on the free end side.
A tooth portion 40a that meshes with Oa and a cam portion 40b are formed at the tip. The actuating member 50 has a base pivotally attached to the base plate 10 by a third pivot 51, and a pin 52 implanted at its lower free end is provided with a roller 53 that contacts the lower surface of the cam 40 b of the lower tooth 40. It is rotatably supported, fits into a long hole 10 c formed in the base plate 10, and an end of the pin 52 protrudes to the opposite side of the base plate 10. In the vicinity of the shaft attachment portion of the operating member 50, a projection 54 is formed at a position facing the upper surface of the cam portion 40b of the lower tooth 40. The guide member 23 is fixed integrally with the operation member 50, and has a guide surface 23a on the upper surface of which the cam surface 22a of the slide contact member 22 slides when the arm 20 is tilted forward.

The operation lever 60 has a base portion pivotally attached to the base plate 10 by a second pivot 41, and one end of a connection link 64 is pivotally supported by a connection pin 65 near the pivot attachment portion. The other end of 64 is pivotally supported by a connecting pin 66 at the upper free end of the operating member 50. Further, a tension spring 62 is attached to the pin 52 of the operating member 50.
Is locked at one end, and the other end is
The operation lever 60 is urged by the tension spring 62 so as to rotate counterclockwise through the operation member 50 and the connection link 64. . The holder plate 80 is used for the arm 2
0, the lower tooth 40 and the guide member 23 so as to sandwich the first, second, and third pivots 31, 41, 51.
It is fixed to.

In FIG. 1, reference numeral 90 denotes an auxiliary operation lever for a rear seat occupant, which is slidably supported by a support member 91 fixed to the base plate 10, and a grip portion 90a attached to the tip thereof is provided in the rear seat. It protrudes to the side. A distal end of the auxiliary operation lever 90 is pivotally supported by a connecting pin 94 at a lower free end of a lock release lever 93 which is pivotally mounted on the base plate 10 by a fourth pivot 92. The lock release lever 93 is connected to the fourth pivot 9
2 is urged to rotate clockwise by a torsion coil spring (not shown) wound around the coil 2, and its upper free end is pressed against the pin 52 of the operating member 50. When the auxiliary operation lever 90 is pulled upward, the lock release lever 93 rotates counterclockwise to press the pin 52, and the roller 53 and the operating member 50 rotate clockwise, thereby causing the upper part 30 to rotate. The lower tooth 40 is configured to be unlocked.

Reference numeral 100 denotes a walk-in lever (indicated by a phantom line) for operating a walk-in mechanism of a seat slide device (not shown). The base of the walk-in lever is mounted on a first pivot 31 and is connected to one free end. The wire 101 linked to the walk-in mechanism is locked. The other free end of the walk-in lever 100 is set so as to come into contact with the operating pin 24 implanted in the arm 20 when the arm 20 is tilted forward. Is restricted by bringing one free end into contact with a stopper 10d formed on the base plate 10.

Next, the operation of the embodiment of the present invention will be described.

As shown in FIG. 4, in order to adjust the inclination angle of the seat back SB from the locked state of the lock mechanism R,
The operation lever 60 is rotated clockwise against the spring force of the tension spring 62. Then, the operating member 50 also rotates clockwise via the connection link 64, the roller 53 is separated from the lower surface of the cam portion 40b of the lower tooth 40, and the projection 54 contacts the upper surface of the cam portion 40b to reverse the lower tooth 40. Rotate clockwise. As a result, the teeth 30a, 40a of the upper tooth 30 and the lower tooth 40 are disengaged, and the lock of the lock mechanism R is released.

In this state, when the seated person fixes the seat back SB at a desired angle and releases the operation lever 60, the operation lever 60 rotates counterclockwise by the spring force of the tension spring 62, To the position. By this return operation, the operating member 50 rotates counterclockwise through the connection link 64,
The protrusion 54 is separated from the upper surface of the cam portion 40b of the lower tooth 40, and the roller 53 pushes up the lower surface of the cam portion 40b to rotate the lower tooth 40 clockwise. As a result, the tooth portions 30a, 40a of the upper tooth 30 and the lower tooth 40 are engaged again, and the locked state is established as shown in FIG.

In order to tilt the seat back SB forward, the above-mentioned operating means disengages the teeth 30a, 40a of the upper tooth 30 and the lower tooth 40, and the seat back SB is pressed by a seated person or the like. Arm 20
Rotates counterclockwise by the spring force of the spiral spring 21.

At this time, as shown in FIG. 5, the arm 20 rotates while sliding the cam surface 22a of the sliding member 22 against the guide surface 23a of the guide member 23.
0 is maintained in a state of being separated from the upper part 30.

Here, as shown in FIG. 1, when the seat back SB is in the seating position, the gap C generated between the base plate 10 and the arm 20 by the sliding member 22 is mainly concealed by the throttle portion 11. can do. Further, as shown in FIG. 5, when the arm 20, that is, the seat back SB is tilted forward, the emboss 25 is
1, and the gap C can be concealed by the cooperative action of the emboss 25 and the throttle portion 11. As described above, since the gap C is concealed by the squeezed portion 11 and the emboss 25 as concealing means, the inside is not seen and the appearance can be improved. Further, since it is only necessary to change the shapes of the arm 20 and the base plate 10, the number of parts and the weight do not increase, and the cost does not increase.

In this embodiment, as the concealing means G, the aperture 11 is provided on the base plate 10 and the emboss 25 is provided on the arm 20, but the aperture or the emboss may be provided on only one of them.

[0026]

As described above, according to the present invention, the gap formed between the base plate and the arm can be concealed by the concealing means by the concealing means, so that the inside is not seen and the appearance can be improved. .

[Brief description of the drawings]

FIG. 1 is an explanatory front view of a seat reclining device of the present invention.

FIG. 2 is an explanatory side view taken along the line II-II in FIG. 1;

FIG. 3 is an explanatory sectional view taken along the line III-III of FIG. 1 from which an operation lever is removed.

FIG. 4 is an explanatory diagram showing a state of a lock mechanism at the time of locking.

FIG. 5 is an explanatory diagram showing a state of a lock mechanism at the time of unlocking.

[Explanation of symbols]

 E Sea reclining device G Concealing means R Lock mechanism SB Seat back SC Seat cushion 10 Base plate 11 Concealing means (throttle part) 20 Arm 22 Sliding contact member 22a Cam surface 23 Guide member 23a Guide surface 25 Concealing means (emboss) Reference Signs List 30 upper parts 30a tooth part 40 lower tooth 40a tooth part 50 operating member 60 operating lever

Claims (1)

(57) [Scope of request for utility model registration] An arm is pivotally mounted on a base plate mounted on a side of a seat, and an upper part, a lower tooth detachable from the upper part, and the lower tooth are operated between the base plate and the arm. A lock mechanism comprising an operating member; a sliding member having a cam surface provided integrally with the arm; and a guide member formed with a guide surface for slidingly contacting the cam surface of the sliding member. A seat reclining device, wherein the arm is rotated while the cam surface of the sliding contact member is in sliding contact with the guide surface of the guide member when the arm is tilted forward. A concealing means for concealing a gap generated between the arm and the base plate by a member is provided on the base plate and / or the arm. Reclining equipment.