JP2007050765A - Mounting structure of damper for vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a damper for a vehicle seat capable of controlling a rotation speed to the optimum degree when the vehicle seat is turned. <P>SOLUTION: In the mounting structure of the damper for the vehicle seat mounted with the damper for reducing a turning speed, the damper 4 comprises a fixed side damper 4b; and a movable side damper 4a movable relative to the fixed side damper 4b while generating constant torque. A fixing member of the seat and the fixed side damper are fixed. A stopper member 6 directed to the other side is projectedly provided on any one of the movable side damper 4a and the turning member and an abutment body 5 abutting on the stopper member 6 is provided on the other side of the movable side damper 4a and the turning member of the seat. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle seat damper mounting structure capable of optimally controlling the rotation speed when a vehicle seat is rotated.

  Conventionally, various vehicle seats including a reclining mechanism, a foldable storage mechanism, and the like are known. In these seats, a seat back and a seat cushion are attached so as to be pivotable around a pivoting portion with a frame, and the seat back and the seat cushion are freely pivoted by lever operation. In this case, when the lever is operated, the seat back and seat cushion are released from the position restriction and rotate vigorously under the impact of a spring or the like. May be burdensome. In order to prevent such a phenomenon, a structure in which a damper for reducing the rotational speed of the seat back and the seat cushion is attached is known (see, for example, Patent Document 1).

  FIG. 5 shows an example of a conventional damper for a vehicle seat as described above, and shows a case where the damper is incorporated in a reclining mechanism of a seat back. In the figure, 21 is a seat back frame, and 22 is a seat cushion frame, and a damper bracket 23 that rotates in conjunction with the rotation of the seat back frame 21 is attached to the pivot portion of the seat cushion frame 22. A damper 24 composed of a movable damper 24a and a fixed damper 24b is attached to the damper bracket 23, and a piece 25 provided on the movable damper 24a and a receiving part 26 provided on the seat back frame 21 are bolts. 27, and a hole 28 provided at the center of the fixed damper 24b and the damper bracket 23 are fitted together.

As a result, since the damper 24 is fixed to the seat back frame 21 with the bolt 27 and is completely restrained, when the seat back frame 21 is rotated, the movable side damper 24a fixed thereto is also rotated, At the same time, the damper is also operated. Therefore, when the seat back is moved forward, there is a problem that the forward movement time becomes longer because the damper operates from the beginning and rotates slowly even in the rotation range where the damper action is not required. When returning to the original position, a large operating force more than the operating force of the damper is required from the beginning, and there is a problem that it is difficult for children and the elderly to operate.
On the other hand, in order to solve this problem, it may be possible to use a two-stage movable damper with a small operating force at the beginning and a large operating force in the second half. There was a problem of becoming higher.
Japanese Utility Model Publication 4-93634

  The present invention solves the above-described problems, can optimally control the rotation speed when rotating the vehicle seat, and can reduce the weight and the production cost with a simple device. It was completed for the purpose of providing a mounting structure for a vehicle seat damper.

  The vehicle seat damper mounting structure of the present invention, which has been made to solve the above problems, is installed so as to be rotatable with respect to a seat fixing member, and is provided with a rotational force applied in one direction by an urging means. A damper structure for a vehicle seat in which a damper for reducing a rotation speed is attached to a pivot portion of a moving member, the damper being fixed to a fixed damper and a fixed damper while generating a constant torque. A movable side damper that is movable, the fixed member of the seat and the fixed side damper are fixed, and either one of the movable side damper or the rotating member is provided with a stopper member protruding toward the other side, A contact body that contacts the stopper member is provided on the other side of the movable-side damper or the rotation member of the seat, and this contact body is a stop that accompanies the rotation of the rotation member. On the trajectory of relative movement of the over member and the abutting member, it is characterized in that it has a first contact portion and second contact portion facing each other between the stopper member.

  The abutment body is a plate-like member formed upright on the outer peripheral surface of the movable damper, and an arc-shaped guide groove is formed, and the stopper member moves in the guide groove. Further, it is formed by a pair of claw pieces standing on the outer peripheral surface of the movable damper, and the stopper member can be moved between the claw pieces.

  In the present invention, the damper includes a fixed damper and a movable damper that is movable with respect to the fixed damper while generating a constant torque, and the fixed member of the seat and the fixed damper are fixed, and the movable side A stopper member toward the other side protrudes from either the damper or the rotating member, and a contact body that comes into contact with the stopper member is provided on the other side of the movable-side damper or the rotating member of the seat, The contact body has a first contact portion and a second contact portion that are opposed to each other with the stopper member interposed therebetween on a locus of relative movement between the stopper member and the contact body accompanying the rotation of the rotation member. Therefore, at the beginning of the rotation of the seat, the stopper member only slides between the first contact portion and the second contact portion, and does not contact the contact body. Apply power The rotating member is quickly rotated only by the action of the rotational force applied by the urging means, and then the stopper member contacts the first or second contact portion and rotates integrally with the contact body. By doing so, the damper works and the seat frame rotates slowly, and it becomes possible to optimally control the rotation speed when rotating the vehicle seat.

  In addition, it is assumed that an arc guide groove is formed on a plate-like member standing on the outer peripheral surface of the movable damper as a contact body, and the stopper member moves in the guide groove, or the movable damper When the stopper member moves between the claw pieces and the stopper member moves between the claw pieces, the contact body can be easily formed and the rotation speed of the seat Can be reliably controlled.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The drawings show the case where the present invention is applied to a folding mechanism for a seat back in an automobile seat. In FIG. 1, 1 is a seat back frame that is a rotating member, and 2 is a seat cushion frame that is a fixed member. A reclining mechanism is incorporated in the seat back frame 1, and the seat back frame 1 always moves forward. It is in a state of being biased by a resilient member (not shown) such as a spring so as to fall down. Further, a damper 4 for reducing the rotational speed of the seat back frame 1 is attached to a pivotally attached portion of the seat back frame 1 that is freely rotatable, and the above configuration is a conventional vehicle seat of this type. And basically the same.

In the present invention, the damper includes the fixed side damper 4b and the movable side damper 4a movable with respect to the fixed side damper 4b while generating a constant torque, and the seat fixing member and the fixed side damper 4b are fixed. In addition, a stopper member 6 directed toward the other side is provided on either one of the movable side damper 4b or the rotating member, and the stopper member 6 is provided on the other side of the movable side damper 4a or the rotating member of the seat. An abutting body 5 is provided, and the abutting body 5 is opposed to the stopper member 6 on the locus of relative movement between the stopper member 6 and the abutting body 5 as the rotating member rotates. The first abutting portion and the second abutting portion are provided.
That is, the damper 4 is composed of a movable damper 4a and a fixed damper 4b, and a contact body 5 for releasing the operating force of the damper is formed on the movable damper 4a. The protruding stopper member 6 is guided.

  More specifically, as shown in FIG. 1, a damper bracket 3 is attached to the pivot portion of the seat cushion frame 2, and an attachment shaft 3 a of the damper bracket 3 is connected to the movable damper 4 a and the fixed damper. A damper is configured by being attached to a damper 4 comprising 4b. The mounting shaft 3a is fitted into a hole 4c formed at the center of the stationary damper 4b and is fixed by a fixture 9 such as a pin.

A contact body 5 for releasing the operating force of the damper is formed on the movable damper 4a, and the stopper member 6 protruding from the seat frame is guided in the contact body 5. .
The contact body 5 that releases the operating force of the damper is conventionally configured such that when the seat frame is rotated, the movable damper 4a is also rotated at the same time, and a damper force is generated between the fixed damper 4b and the seat. The reason why the rotational speed is reduced is to make the operating force of the damper 4 ineffective within a predetermined range at the beginning of the rotation of the seat. In other words, the present invention has a structure in which the contact body 5 is provided to create a free range where the operating force of the damper 4 does not work.

As the abutment body 5, in FIG. 1, an arcuate guide groove 7a is formed on a plate-like member 7 standing on the outer peripheral surface of the movable damper 4a, and the inside of the guide groove 7a is formed. The stopper member 6 is structured to move.
In addition, as shown in FIG. 4, the contact body 5 is formed by a pair of claw pieces 8, 8 erected on the outer peripheral surface of the movable damper 4 a. The stopper member 6 may be moved.
The abutting body 5 includes a first abutting portion and a second abutting portion facing each other with the stopper member 6 interposed therebetween on a locus of relative movement between the stopper member 6 and the abutting body 5 accompanying the rotation of the rotating member. It has contact portions (both ends of the guide groove 7a in the case of FIG. 1 and left and right claw pieces 8, 8 in the case of FIG. 4).

Next, the operation of the vehicle seat damper mounting structure of the present invention configured as described above will be described.
2A and 2B are explanatory views showing the operation of the damper according to the present invention, in which FIG. 2A shows an initial state, FIG. 2B shows a state where the damper starts to work, and FIG. 2C shows a state where the damper is working.
In the state of FIG. 2A, the seat back frame 1 is in a predetermined position, and the stopper member 6 is located at the right end of the arc-shaped guide groove 7a. Next, when the seat back is moved forward by operating a lever (not shown), the position restriction of the seat back frame 1 is released as shown in FIG. Rotate in the direction of rotation). At this time, the stopper member 6 is guided by the arc-shaped guide groove 7a and moves from the right end to the left end. During this time, the stopper member 6 only moves alone, and the movable damper 4a does not move at all. Therefore, since no damper force is generated, the seat back frame 1 quickly rotates in the direction of the arrow. Next, as shown in FIG. 2 (c), when the seat back frame 1 further rotates, the stopper member 6 that is engaged with the left end of the guide groove 7a pulls the plate-like member 7 to move the movable damper 4a. It will rotate in the direction of the arrow. As a result, the operating force of the damper 4 works and the rotational speed of the seat back frame 1 is reduced.

In this way, in the present invention, as shown in FIG. 3, when the seat back 11 is moved forward, the damper 4 does not work within the range of an example from the start, so the seat back 11 rotates quickly, and thereafter the damper 4 works. Therefore, it will rotate slowly with its speed controlled, and it is excellent in safety and operability.
On the contrary, when the seat back 11 is caused, the stopper member 6 is guided by the guide groove 7a and moved from the left end to the right end only within the range of the example from the start. The damper 4 can be turned slowly to control the speed.
In addition, the above description has been given of the forward-turning structure of the seat back 11, but it goes without saying that the structure can be similarly applied to the structure of raising the seat cushion in the seat arrangement mechanism.

  As is clear from the above description, the present invention is a vehicle seat damper mounting structure, wherein the damper comprises a stationary damper and a movable damper that is movable with respect to the stationary damper while generating a constant torque. A fixed member and a fixed damper of the seat are fixed, and a stopper member that protrudes toward the other side is provided on either one of the movable damper or the rotating member, and the movable damper or the rotating member of the seat On the other side, a contact body that abuts against the stopper member is provided, and this contact body interposes the stopper member on the locus of relative movement between the stopper member and the contact body as the rotation member rotates. The structure has a first contact portion and a second contact portion that are opposed to each other, and optimally controls the rotation speed when the seat is rotated. It can, also because it uses simple equipment of the one-way damper, also has the advantage that it is possible to achieve also a reduction in weight and production costs.

It is a perspective view of the principal part which shows embodiment of this invention. It is explanatory drawing which shows the action | operation of the damper which concerns on this invention. It is explanatory drawing which shows the action | operation of a sheet | seat. It is a front view of a damper showing other embodiments. It is a perspective view of the principal part which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat back frame 2 Seat cushion frame 3 Damper bracket 3a Mounting shaft 4 Damper 4a Movable side damper 4b Fixed side damper 5 Contact body 6 Stopper member 7 Plate member 7a Guide groove 8 Claw piece 11 Seat back 12 Seat cushion

Claims (3)

  A vehicle in which a damper for reducing a rotating speed is attached to a pivoting portion of a rotating member which is installed so as to be rotatable with respect to a fixing member of a seat and is given a turning force in one direction by an urging means. A seat damper mounting structure comprising a stationary damper and a movable damper that is movable with respect to the stationary damper while generating a constant torque, and the seat fixing member and the stationary damper are fixed. In addition, a stopper member directed to the other side protrudes from one of the movable side damper and the rotating member, and comes into contact with the stopper member on the other side of the movable side damper or the rotating member of the seat. An abutting body is provided, and the abutting body is opposed to the stopper member on the trajectory of the relative movement between the stopper member and the abutting body accompanying the rotation of the rotating member. Mounting structure of a vehicle seat damper and having a contact portion and second contact portion.   The abutting body according to claim 1 is formed by forming an arcuate guide groove on a plate-like member standing on the outer peripheral surface of the movable damper, and the stopper member moves in the guide groove. A mounting structure for a vehicle seat damper. The contact body according to claim 1 is formed by a pair of claw pieces standing on the outer peripheral surface of the movable damper, and a stopper member moves between the claw pieces. Damper mounting structure.

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