JP2003232394A - Damper for automobile seat and automobile seat mechanism provided therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damper in which large damping force can be obtained, and moreover, miniaturization can be achieved, and which is excellently suitable for an automobile seat particularly in which a seat back is stretched, and after that, the seat is made to be popped up in the lateral direction, and to provide an automobile seat mechanism provided therewith. <P>SOLUTION: The damper 2 is provided with a rotary body 11 to which lateral turning R1 of a rear seat 3 is transmitted, a fixing member 12 to be fixed to a chassis, a gap forming member 14 to form a gap 13 by cooperating with the rotary body 11, silicon unvulcanized rubber 15 arranged in the gap 13, and a one-way clutch means 16 which, while it generates relative rotation between the gap forming member 14 and the rotary body 11 in the lateral turning R1 in the downward direction of the rear seat 3, prevents generation of the relative rotation between the gap forming member 14 and the rotary body 11 in the lateral turning R1 in the upward direction of the rear seat 3. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an automobile seat,
For example, in a rear seat that can be rotated laterally,
The present invention relates to a damper for an automobile seat that can absorb the return rotational energy of the rear seat that has been flipped up in the lateral direction to eliminate a sudden return of the rear seat, and an automobile seat mechanism including the damper.

[0002]

In automobiles, it has been proposed that the rear seat be flipped up in the lateral direction in order to widen the vehicle interior space. However, when such rear seat is flipped up in the lateral direction (raising direction) In the case of lateral rotation), the weight of the rear seat acts even if a little large force is applied, and the problem of collision with the stopper etc. does not occur so much, but in the case of returning it to the original (in the case of lateral rotation in the lowering direction) ) Is abruptly lowered in the lateral direction due to the influence of the rear seat's own weight, and collides with a stopper or the like to produce an unpleasant loud noise. In order to slowly perform the horizontal rotation of the rear seat in the lowering direction, it is preferable to use a damper that absorbs the lateral rotation energy. As such a damper, one using a fluid is known. , In the damper using such fluid,
In addition to being large in size to obtain a large damping force,
Requires extensive sealing to prevent fluid leakage. In particular, in order to secure a large in-car living space, the backrest is rotated rearward with respect to the rear seat to extend the backrest relative to the rear seat, and then the rear seat is flipped up in the lateral direction. Then, since it is necessary to damp a large amount of rotational energy based on the total load of the backrest and the rear seat,
It is difficult to obtain the desired large damping with a small damper that simply uses fluid.

The present invention has been made in view of the above points, and an object of the present invention is to obtain a large damping force and to make it compact, and particularly to extend the backrest or fold the backrest. Then, it is an object of the present invention to provide a damper suitable for a vehicle seat in which the seat is flipped up in the lateral direction or the seat is pivoted rearward, and an automobile seat mechanism including the damper.

[0004]

According to a first aspect of the present invention, there is provided a damper for an automobile seat, wherein a rotary body adapted to transmit the rotation of the automobile seat and a seat of the automobile are rotatable. A fixing member that is fixed to the chassis installed in the vehicle, and is interposed between the rotating body and the fixing member and cooperates with one of the rotating body and the fixing member to form a gap. The gap forming member, the silicone-based unvulcanized rubber disposed in the gap, and the rotating body that forms a gap in cooperation with the gap forming member when the automobile seat rotates in one direction. And one of the fixing members causes relative rotation based on rotation in one direction, while the rotation of the seat of the automobile in the other direction causes the gap forming member and the gap forming member to rotate. Rotation that cooperates to form a gap And it is provided with the other one-way clutch means so as not to cause relative rotation based on the rotation of direction between one of the of the fixed member.

According to the damper of the first aspect, since the damping function is obtained by the silicone-based unvulcanized rubber, there is no fear of wear and the seal for preventing leakage can be omitted. It is possible to easily obtain a large damping force even if it is lightweight and small, and, moreover, by means of the one-way clutch means, rotation of the seat of the vehicle in one direction, for example, flip-up lateral rotation of the seat or forward return rotation of the seat. In dynamics, the damping function due to the silicone-based unvulcanized rubber should not occur,
When the seat of the automobile is rotated in the other direction, for example, when the seat is returned to the lower side, or when the seat is moved to the rear side to lower the seat, a damping function of the silicone-based unvulcanized rubber is generated. The seat can be easily flipped up or returned to the front, and no unpleasant loud noise is generated due to a collision with a stopper or the like when the seat is returned or lowered in the lateral direction or turned backward.

In the damper of the first aspect, like the damper for the automobile seat of the second aspect of the present invention, the rotating body is adapted to transmit the lateral rotation of the automobile seat in the up and down direction. The fixing member is fixed to a chassis on which the seat of the automobile is rotatably installed, and the one-way clutch means, when the seat of the automobile is laterally rotated in the lowering direction, Relative rotation is generated between the gap forming member and one of the rotating member and the fixing member that cooperate with the gap forming member to form a gap, while a relative rotation based on the lateral rotation in the lowering direction is generated, and an automobile seat In the horizontal rotation in the raising direction, the relative movement based on the horizontal rotation in the raising direction between the gap forming member and one of the rotating body and the fixing member that cooperate with the gap forming member to form the gap. So that it does not rotate However, like the damper for the automobile seat of the third aspect of the present invention, the rotating body is adapted to transmit the rotation of the seat of the automobile in the front-rear direction, and the fixing member is the automobile. Is fixed to a chassis rotatably mounted in the front-rear direction, and the one-way clutch means is provided with a gap forming member and this gap when the seat of the vehicle is rotated in the rear direction. While rotating relative to one of the rotating body and the fixing member that forms a gap in cooperation with the forming member based on the backward rotation, the forward rotation of the seat of the automobile Is
Even if the gap forming member and one of the rotating member and the fixing member that cooperate with the gap forming member to form the gap do not cause relative rotation based on forward rotation. Good.

According to a fourth aspect of the present invention, there is provided a damper for an automobile seat, which is a rotating body adapted to transmit the rotation of an automobile seat, and a gap which cooperates with the rotating body to form a gap. The forming member, the silicone-based unvulcanized rubber arranged in the gap, and the gap forming member are rotatably supported, and the seat of the automobile is fixed to a chassis rotatably installed. When the fixing member and the seat of the automobile are rotated in one direction, the gap forming member is rotated in one direction as the rotating body is rotated in one direction through the silicone-based unvulcanized rubber. On the other hand, when the seat of the automobile is rotated in the other direction, a one-way clutch means for prohibiting the rotation of the gap forming member connected to the other rotation of the rotating body through the silicone-based unvulcanized rubber in the other direction in the other direction. Is equipped with

According to the damper of the fourth aspect, like the damper of the first aspect, since the damping function is obtained by the unvulcanized silicone rubber, there is no fear of abrasion and A seal for preventing leakage can be omitted, and a large damping force can be easily obtained even if it is lightweight and small in size. Moreover, the one-way clutch means prevents the silicone-based non-rotation when the seat of the automobile is rotated in one direction. Since the damping function of the vulcanized rubber is not generated and the damping function of the silicone-based unvulcanized rubber is generated when the vehicle seat rotates in the other direction, for example, In addition to being able to easily raise or return to the front, no unpleasant loud noise is generated due to a collision with a stopper or the like when the seat is returned or lowered in the lateral direction or is rotated backward and downward.

In the damper of the fourth aspect, like the damper for the automobile seat of the fifth aspect of the present invention, the rotating body is adapted to transmit the lateral rotation of the seat of the automobile in the up-down direction. The fixing member is fixed to a chassis on which the seat of the automobile is rotatably installed, and the one-way clutch means, when the seat of the automobile is laterally rotated in the raising direction, The gap forming member is made to rotate with the rotation of the rotating body through the silicone-based unvulcanized rubber, while rotation is performed through the silicone-based unvulcanized rubber when the vehicle seat is laterally rotated in the downward direction. Even when the rotation of the gap forming member that is linked to the rotation of the body is prohibited, like the damper for the automobile seat of the sixth aspect of the present invention, the rotating body rotates in the front-back direction of the seat of the automobile. Motion is transmitted The fixing member is adapted to be fixed to a chassis on which the seat of the automobile is rotatably installed in the front-rear direction, and the one-way clutch means is a rearward rotation of the seat of the automobile. In the motion, the gap forming member is rotated by the rotation of the rotating body through the silicone-based unvulcanized rubber, while the silicone-based unvulcanized rubber is rotated in the forward rotation of the automobile seat. It is also possible to prohibit the rotation of the gap forming member that follows the rotation of the rotating body via the.

In the damper for an automobile seat according to the seventh aspect of the present invention, in the damper according to any one of the first to sixth aspects, the gap forming member is provided on at least one of the rotating body and the fixing member. It is rotatably supported.

When the gap forming member is rotatably supported by both the rotary member and the fixed member, the gap forming member is supported more firmly, and a damper having no fluctuation in the gap can be obtained.

In the damper for an automobile seat according to the eighth aspect of the present invention, in the damper according to any one of the first to seventh aspects, the gap forming member has a cylindrical outer peripheral surface. The directional clutch means has one end fixed to the rotating body or the fixed member, and the other end serving as a free end on the cylindrical outer peripheral surface of the gap forming member, and the gap forming member between the one end and the other end. It has a coil spring wound around a cylindrical outer peripheral surface.

According to the damper of the eighth aspect, since the one-way clutch means includes the coil spring wound around the cylindrical outer peripheral surface of the gap forming member, the diameter of the coil spring can be increased. The one-way clutch action due to the diameter reduction prevents the damping function of the silicone-based unvulcanized rubber from occurring in one direction of rotation of the automobile seat, and prevents the silicone-based unvulcanized rubber from rotating in the other direction of the automobile seat. As a result of being able to generate the damping function by the vulcanized rubber, it is possible to easily perform, for example, flipping up or returning the front of the seat of the vehicle by a very simple mechanism, and further, lowering or lowering the seat laterally. It is possible to prevent an unpleasant loud noise due to a collision with a stopper or the like during the rotation.

In the present invention, the rotating body preferably has a shaft portion and a cylindrical portion concentric with the shaft portion, like the damper for the automobile seat of the ninth aspect thereof, wherein:
The gap forming member includes a main body slidably in contact with the shaft of the rotating body, a tubular portion concentric with the main body, and a lid body screwed to the tubular portion. In such a damper for an automobile seat, preferably, as in the damper for an automobile seat according to the tenth aspect of the present invention, a spline is formed on the outer peripheral surface of the cylindrical portion of the rotating body, and Like the damper for the automobile seat of the eleventh aspect of the invention, the lid body is screwed to the outer peripheral surface or the inner peripheral surface of the tubular portion of the gap forming member, and the twelfth aspect of the present invention. A seal member is interposed between the lid and the cylindrical portion of the rotating body, as in the automobile seat damper.

In the present invention, the silicone-based unvulcanized rubber may have a plasticity of 30 to 420 like the damper for the automobile seat of the thirteenth aspect, but it is preferably Like the damper for the automobile seat of the fourteenth aspect of the invention, which has a plasticity of 60 to 320,
More preferably, it has a plasticity of 160 to 320, like the damper for the automobile seat of the fifteenth aspect of the present invention.

The plasticity of the silicone-based unvulcanized rubber in the present invention is a value measured by a Williams plasticity meter standardized by ASTM or the like. Specifically, the upper and lower parallel plates have a diameter of about Scissoring a silicone-based unvulcanized rubber of 1.43 cm in height and 1.27 cm in height and having a volume of 2 cc, 7
Height (mm / 100) of silicone-based unvulcanized rubber after being compressed under a load of 5 kg at 0 ° C to 100 ° C for 3 minutes
It is represented by.

In the present invention, the silicone-based unvulcanized rubber may have a plasticity of 30 to 420 as described above, but a plasticity of less than 30 facilitates flow. If the silicone-based unvulcanized rubber disposed in the gap needs a sufficient seal to prevent leakage, a large damping force cannot be expected, and the plasticity is greater than 420, the gap forming member In addition, there is almost no familiarity with the contact surface of one of the rotating body and the fixed member that forms a gap in cooperation with the gap forming member, and the gap is formed in cooperation with the gap forming member and the gap forming member. In the relative rotation of one of the rotating body and the fixing member, a gap forming member and a rotating body and a fixing member that cooperate with the gap forming member to form a gap with respect to the silicone-based unvulcanized rubber. One side slips, and it becomes difficult to obtain a substantial damping force due to the deformation of the silicone-based unvulcanized rubber, and a gap forming member that contacts the silicone-based unvulcanized rubber to prevent slippage and this gap formation Even if the silicone-based unvulcanized rubber is grasped by using one surface of the rotating body and the fixing member that cooperate with the member to form a concave and convex surface, the silicone-based unvulcanized rubber having a plasticity higher than 420 is extremely high. Since it is brittle, the silicone-based unvulcanized rubber easily shears (divides) when the gap forming member and one of the rotating body and the fixing member that cooperate with the gap forming member to form a gap are relatively rotated. Therefore, the damping force based on the deformation of the silicone-based unvulcanized rubber cannot be obtained also by this.

The silicone-based unvulcanized rubber is filled in the gap between the gap forming member and one of the rotating member and the fixing member. If the plasticity is higher than 420, the gap is formed. It becomes extremely difficult to fill the silicone-based unvulcanized rubber into the gap between the member and one of the rotating body and the fixed member without a cavity (unfilled portion). If a cavity is formed between the gap forming member and one of the rotating body and the fixing member and the silicone-based unvulcanized rubber, desired damping may not be obtained.

The plasticity of the silicone-based unvulcanized rubber is preferably from the viewpoints of the necessity of such a seal, the magnitude of the obtained damping force, the conformability, brittleness, the ease of filling, the durability, etc. Street, 60 to 320, more preferably
160 to 320. When the plasticity is 60 or more,
The fluidity of the silicone-based unvulcanized rubber is almost eliminated, the leakage of the silicone-based unvulcanized rubber can be prevented with a simple sealing mechanism, and when the plasticity is 160 or more, the sealing mechanism can be almost omitted, and relatively A large damping force can be obtained. On the other hand, the silicone-based unvulcanized rubber has a plasticity of 4
When it is larger than 20, the conformability with the gap forming member and the contact surface of one of the rotating body and the fixing member is lost as described above, and it becomes brittle and easily sheared, but the plasticity is 320. In the following silicone-based unvulcanized rubber, the compatibility with the gap forming member and the contact surface of one of the rotating body and the fixing member is improved, and the gap forming member and one of the rotating body and the fixing member are In relative rotation of each other, the silicone-based unvulcanized rubber is deformed without causing much slippage with respect to the gap forming member and one of the contact surfaces of the rotating body and the fixing member, and the desired damping is obtained. In addition to being easy, the uneven surface that is not fragile and is preferably plastically deformed in accordance with relative rotation of the gap forming member and one of the rotating body and the fixing member to grip the silicone-based unvulcanized rubber Be used one of the formed gap forming member and the rotating body and the fixed member, it is possible to avoid a situation such as silicone unvulcanized rubber is sheared so ragged.

In the present invention, it is preferable that the silicone-based unvulcanized rubber has the above-mentioned plasticity. However, instead of the plasticity, the automobile seat of the sixteenth aspect thereof is preferable. 10 to 150M, like a damper for
It may have a Mooney viscosity of L 1 + 4 (100 ° C.), but is preferably 36 to 72 ML 1 + 4, such as the damper for an automobile seat of the seventeenth aspect of the invention.
It has a Mooney viscosity of (100 ° C.), more preferably 66 to 72 ML 1 + 4 (100 ° C.), like the damper for an automobile seat of the eighteenth aspect of the present invention.
It may have a Mooney viscosity of.

Similar to the silicone-based unvulcanized rubber having the above-mentioned plasticity, a silicone-based unvulcanized rubber having a Mooney viscosity of less than 10ML 1 + 4 (100 ° C.) tends to flow easily and is disposed in the gap. In addition to requiring a sufficient seal to prevent leakage of silicone-based unvulcanized rubber, a large damping force cannot be expected.
In the silicone-based unvulcanized rubber having a Mooney viscosity of more than 0ML 1 + 4 (100 ° C.), the gap forming member and one of the contact surfaces of the rotating body and the fixing member that cooperate with the gap forming member to form the gap. Almost no familiarity with the gap forming member, and the gap between the silicone-based unvulcanized rubber in relative rotation of the gap forming member and one of the rotating member and the fixing member that cooperate with the gap forming member to form the gap. One of the rotating member and the fixing member that forms a gap in cooperation with the forming member and the gap forming member slips, and it becomes difficult to obtain a substantial damping force due to the deformation of the silicone-based unvulcanized rubber. A gap forming member in contact with the silicone-based unvulcanized rubber for preventing slippage, and one surface of a rotating body and a fixing member that cooperate with the gap forming member to form a gap. Also be grip the silicone-based unvulcanized rubber as uneven surface, 150ML 1 + 4 (10
Since the silicone-based unvulcanized rubber having a Mooney viscosity higher than 0 ° C.) is extremely brittle, the gap forming member and one of the rotating member and the fixing member that cooperate with the gap forming member to form the gap are relatively opposed to each other. The silicone-based unvulcanized rubber is easily sheared (divided) during normal rotation, and the damping force due to the deformation of the silicone-based unvulcanized rubber is no longer obtained. This eliminates the need for such a seal and the resulting damping. The silicone-based unvulcanized rubber is preferably 36 to 72 ML 1 + 4 (100) as described above from the viewpoints of strength, conformability, brittleness, ease of filling, durability, and the like.
C.) Mooney viscosity, more preferably 6
It has a Mooney viscosity of 6 to 72 ML 1 + 4 (100 ° C.).

In the present invention, the silicone-based unvulcanized rubber is preferably composed of a silicone-modified ethylene propylene rubber, such as the damper for an automobile seat of the nineteenth aspect thereof.

When the silicone-based unvulcanized rubber is composed of a silicone-modified ethylene propylene rubber, it is possible to provide a damper for an automobile seat which is excellent in durability and weather resistance.

In the present invention, it is preferable that the gap forming member and one of the rotating member and the fixing member have an uneven surface in contact with the silicone-based unvulcanized rubber.
The relative rotation of the gap forming member and one of the rotating body and the fixing member may prevent the silicone-based unvulcanized rubber near the uneven surface from sliding on the uneven surface. The uneven surface may be embodied by discretely arranged projections or concave grooves or continuous projections or concave grooves, but may also be embodied by a pear-skin-shaped or grain-shaped uneven surface.

The uneven surface functions to grip the silicone-based unvulcanized rubber in the vicinity of the uneven surface, whereby the relative rotation between the gap forming member and one of the rotating member and the fixing member. In this case, it is possible to prevent slippage between the silicone-based unvulcanized rubber and one of the gap-forming member and one of the rotating body and the fixing member, and to cause a desired plastic deformation of the silicone-based unvulcanized rubber. The vulcanized rubber can absorb the target energy. As described above, the silicone-based unvulcanized rubber and the gap forming member in contact therewith and one of the surfaces of the rotating body and the fixing member are well adapted to each other, so When slippage does not occur with the silicone-based unvulcanized rubber or when the slippage is allowed, a smooth surface may be used instead of the uneven surface.

A vehicle seat mechanism according to a first aspect of the present invention is a damper according to any one of the above aspects, a seat rotatably provided on a chassis of an automobile, and a seat rotatably with respect to the seat. And a backrest provided on the.

According to the automobile seat mechanism of the first aspect, since the damping function is obtained by using the silicone-based unvulcanized rubber, the above-mentioned damper effect can be obtained and the seat, For example, the rear seat may not be suddenly returned or suddenly tilted backward. The damper and vehicle seat mechanism according to any of the above aspects of the present invention can be applied to any vehicle seat such as a front seat and a rear seat, but is preferably applied to a rear seat.

In the automobile seat mechanism of the first aspect,
Even if the backrest is provided so as to be rotatable rearward with respect to the seat as in the automobile seat mechanism of the second aspect of the present invention, like the automobile seat mechanism of the third aspect of the present invention, It may be provided so as to be rotatable forward with respect to the seat.

The invention and its embodiments will now be described with reference to the preferred examples shown in the drawings. The present invention is not limited to these examples.

[0030]

1 to 5, an automobile seat mechanism 1 of the present embodiment includes a damper 2 for an automobile seat and a lateral rotation in a raising and lowering direction with respect to a chassis of an automobile.
That is, a seat provided so as to be rotatable in the direction of lateral rotation R1,
In this example, a rear seat 3, a backrest 4 rotatably provided in the rear direction R2 with respect to the rear seat 3, and a leg 5 rotatably provided in the lateral direction R3 with respect to the rear seat 3 are provided. There is.

The damper 2 includes a rotating body 11 adapted to transmit the lateral rotation R1 of the rear seat 3 of the vehicle and a chassis on which the rear seat 3 of the vehicle is rotatably installed in the direction of the lateral rotation R1. And a fixed member 12 adapted to be fixed to the rotary member 11 and one of the rotary member 11 and the fixed member 12, which is interposed between the rotary member 11 and the fixed member 12, and cooperates with the rotary member 11 in this example. The gap forming member 14 that forms the gap 13, the silicone-based unvulcanized rubber 15 disposed in the gap 13, and the lateral rotation R in the lowering direction of the rear seat 3 of the automobile.
In 1 (rotating downward to return the rear seat 3 to the original position shown in FIGS. 4 and 5), between the gap forming member 14 and the rotating body 11 that cooperates with the gap forming member 14 to form the gap 13. While causing relative rotation based on the lateral rotation R1,
In the lateral rotation R1 of the rear seat 3 of the automobile in the raising direction (bounce-up rotation for bringing the rear seat 3 to the position shown in FIG. 6), the gap 13 is formed in cooperation with the gap forming member 14 and the gap forming member 14. One-way clutch means 16 for preventing relative rotation based on the lateral rotation R1 with the rotating body 11 is provided.

The rotating body 11 includes a disc portion 21 and the disc portion 21.
A cylindrical shaft portion 22 formed integrally with the shaft portion 22, and a cylindrical portion 23 formed outside the shaft portion 22 and concentrically with the shaft portion 22 and integrally formed with the disc portion 21. , Shaft 22
And a cylindrical outer shaft portion 24 formed integrally with the disk portion 21 on the opposite side to the outer peripheral surface 27 of the cylinder portion 23 and the cylindrical portion 23. A spline 25 is formed on the portion, and annular step portions 28 and 29 are formed on the inner peripheral surface 26 and the outer peripheral surface 27 of the tubular portion 23, respectively.

The fixing member 12 includes an annular portion 41 and an annular portion 4
1 and a cylindrical shaft portion 42 integrally formed with the shaft portion 42,
A cylindrical portion 43, which is arranged outside of the shaft portion and is concentric with the shaft portion 42 and which is integrally formed with the annular portion 41;
3 and a mounting plate portion 46 having a through hole 45 for inserting the fixing bolt 44, and an annular recess 47 is formed on one surface of the annular portion 41. Has been formed.

The gap forming member 14 is the shaft portion 2 of the rotating body 11.
2 and the main body 51 slidably in contact with the shaft portion 42 of the fixing member 12, and the outer cylindrical portion 5 concentrically arranged on the outer side of the main body 51 and integrally formed with the main body 51.
2 and a cylindrical lid body 55 that is screwed to the cylindrical portion 52 on the inner peripheral surface 53 of the cylindrical portion 52 via a screw portion 54.

The main body 51 has a central shaft portion 57 that is in close contact with the cylindrical inner peripheral surface 56 of the shaft portion 42 of the fixing member 12 in a close and slidable manner, and a central shaft portion 57 outside the central shaft portion 57. It has an inner tubular portion 58 that is concentrically arranged and is integrally formed with the central shaft portion 57, and an annular portion 59 that is integrally formed with the tubular portion 58 and the tubular portion 52. At one end of the central shaft portion 57 arranged at the place 47, a retaining ring 60 for preventing the gap forming member 14 from axially coming out of the fixing member 12 is fitted, and at the tubular portion 58, The outer peripheral surface 61 has an annular step portion 62 corresponding to the step portion 28, and is in close contact with the outer peripheral surface 63 of the shaft portion 22 and the outer peripheral surface 69 of the shaft portion 42 in a close and slidable manner. The tubular portion 52
Corresponds to the step 29 on the inner peripheral surface 53 of the annular step 6
5 and has one end of the outer peripheral surface 73 thereof in close contact with the inner peripheral surface 66 of the cylindrical portion 43 in a slidable manner,
In this way, the gap forming member 14 slidably contacts the peripheral surface 63 of the distal end portion of the shaft portion 22 and the outer peripheral surface 69 of the shaft portion 42 at the tubular portion 58, and the shaft portion 42 at the central shaft portion 57. Due to the slidable contact of the inner peripheral surface 56 with the inner peripheral surface 66 of the cylindrical portion 43 and the slidable contact of the cylindrical portion 52 with the inner peripheral surface 66 of the cylindrical portion 52, the rotary body 11 and the fixing member 12 are rotated about the axis X. It is rotatably supported in the lateral direction R1.

The cylindrical lid body 55 is screwed to the inner peripheral surface 53 of the cylindrical portion 52 at the threaded portion 54 of the cylindrical outer peripheral surface thereof, and the cylindrical inner peripheral surface 68 of the cylindrical portion 23 forms the cylindrical portion 23. It is in close contact with the outer peripheral surface 27 in a slidable manner, and the lid 5
Reference numeral 5 has an annular projection 32 fitted in an annular recess 31 formed in the tubular portion 23 of the rotating body 11.
The rotary body 11 is prevented from axially slipping out of the gap forming member 14 by fitting the two into the recess 31.

The gap 13 is formed between the cylindrical portion 58 and the shaft portion 22 arranged inside the cylindrical portion 58, between the cylindrical portion 58 and the cylindrical portion 23 arranged outside the cylindrical portion 58, and the cylindrical portion 52. And the tubular portion 23 disposed inside the tubular portion 52, between the disc portion 21 and the tubular portion 58, and between the annular portion 59 and the tubular portion 23.

10 to 150 ML 1 + 4 (100
Mooney viscosity of (° C.), preferably 36 to 72 ML 1.
Mooney viscosity of +4 (100 ° C), more preferably 6
Mooney viscosity of 6 to 72 ML 1 + 4 (100 ° C.), even more specifically substantially 70 ML 1 + 4
The silicone-based unvulcanized rubber 15 having a Mooney viscosity of (100 ° C.) and made of silicone-modified ethylene propylene rubber is filled in the gap 13 in close contact with the rotor 11 and the gap forming member 14.

In the lateral rotation R1 of the rear seat 3 of the automobile in the raising direction, the gap forming member 14 is laterally rotated R as the rotating body 11 rotates through the silicone-based unvulcanized rubber 15.
1, while the rear seat 3 of the automobile is rotated laterally in the lowering direction R1, the gap forming member 14 that is connected to the rotation of the rotating body 11 through the silicone-based unvulcanized rubber 15 is rotated. In the one-way clutch means 16 of this example, the one end 71 is fixed to the cylindrical portion 43 of the fixing member 12, and the other end 72 is the cylindrical portion 52 of the gap forming member 14.
The coil spring 74 has a free end on the cylindrical outer peripheral surface 73 and is wound between the one end 71 and the other end 72 in contact with the outer peripheral surface 73.

The coil spring 74 is used for the rear seat 3 of the automobile.
When the rotating body 11 is rotated in the same direction by the lateral rotation R1 in the raising direction, the gap forming member 14 is moved to the silicone-based unvulcanized rubber 15
When it is attempted to be rotated in the same direction via, it is wound in such a winding direction that it comes into contact with the outer peripheral surface 73 and the diameter of the wound portion expands. Is allowed to rotate, and relative rotation in the direction of lateral rotation R1 about the axis X is prevented between the rotating body 11 and the gap forming member 14, and thus the silicone-based additive is not applied. While the resistance to the lateral rotation R1 of the rear seat 3 of the automobile caused by the shear deformation of the rubber vulcanizate 15 is prevented, the rotating body 11 is rotated in the same direction by the lateral rotation R1 of the rear seat 3 of the automobile lowered. When the gap forming member 14 tries to rotate in the same direction via the silicone-based unvulcanized rubber 15, the gap forming member 14 comes into contact with the outer peripheral surface 73 and is wound in a winding direction such that the diameter is reduced at the wound portion. As a result of being rotated,
Such rotation of the gap forming member 14 in the same direction is prohibited, and relative rotation in the direction of lateral rotation R1 about the axis X is generated between the rotating body 11 and the gap forming member 14. Then, resistance is generated to the lateral rotation R1 of the rear seat 3 of the automobile in the lowering direction due to the shear deformation of the silicone-based unvulcanized rubber 15, and the energy of the lateral rotation R1 of the rear seat 3 in the lowering direction is partially silicone. The unvulcanized rubber 15 is used for absorption.

The rear seat 3 is rotatably attached to a base 81 fixed to a chassis of an automobile through a damper 2 and a hinge mechanism 82 in a direction of lateral rotation R1, and thus the rear seat 3 is mounted on the base. It is rotatably provided in the direction of lateral rotation R1 with respect to the chassis of the vehicle via 81.

The hinge mechanism 82 has a bearing member 83 fixed to the base 81, and at one end 84, rotates in the direction of lateral rotation R1 via one shaft 85 of one bearing 85 of the bearing member 83. The other end portion 87 is freely connected and one arm member 88 fixed to the rear seat 3 and one end portion 89.
Is fixed to the cylindrical portion 23 of the rotating body 11 of the damper 2 having the spline 25 formed on the outer peripheral surface thereof, with the hole splined, and the other end 90 is fixed to the rear seat 3. And the other arm member 91 that has been formed.

The external shaft portion 24 of the rotating body 11 of the damper 2 is
The other bearing portion 92 of the bearing member 83 is rotatably supported in the direction of lateral rotation R1, and the mounting plate portion 46 of the fixing member 12 of the damper 2 bridges the bearing portion 85 and the bearing portion 92. It is fixed to the mounting portion 93 of the bearing member 83 via the fixing bolt 44.

When the rear seat 3 is rotated in the direction of lateral rotation R1, the rotating body 11 of the damper 2 is rotated in the same direction via the spline connection with the one end portion 89 of the arm member 91 in the spline 25. It has become so.

The backrest 4 is rotatably attached to the rear seat 3 in the rearward direction R2 via a known hinge mechanism 95 (see FIG. 6), and the legs 5 are also a known hinge mechanism. It is attached to the rear seat 3 via 96 so as to be rotatable in the lateral direction R3. Since the lock mechanism and the like of the hinge mechanisms 95 and 96 are known, detailed description thereof will be omitted.

According to the automobile seat mechanism 1 having the damper 2, the backrest 4 is moved in the rearward direction R as shown in FIG.
After turning to 2, the rear seat 3 is turned in the raising direction in the lateral turn R1, and further, the leg 5 is turned in the lateral direction R3 with respect to the rear seat 3 to provide a large in-vehicle living space. it can.

According to the automobile seat mechanism 1, when the rear seat 3 is horizontally rotated R1 in the raising direction, the rotor 11 and the gap forming member 14 are also rotated in the same direction, and the silicone-based unvulcanized rubber 15 damps the same. Since the rear seat 3 is prevented from having a function, the rear seat 3 can be easily flipped up in the horizontal direction, and in the horizontal rotation R1 in the lower direction of the rear seat 3, the coil spring 74 is used to move the gap forming member 14 in the same direction. The rotation is prohibited, the relative rotation in the direction of the lateral rotation R1 is caused between the rotating body 11 and the gap forming member 14, and the silicone-based unvulcanized rubber 15 is sheared and deformed. Rear The rotational energy of the rear seat 3 is absorbed by the shear deformation of the silicone-based unvulcanized rubber 15. Therefore, the lateral rotation R of the rear seat 3 in the direction of sudden return and lowering is performed.
1 can be avoided, a sudden return of the rear seat 3 can be eliminated, and an unpleasant loud noise due to a collision with a stopper or the like can be eliminated.

According to the damper 2, since the damping function is obtained by the shear deformation of the silicone-based unvulcanized rubber 15, there is no fear of abrasion and the seal for preventing leakage can be omitted. Moreover, it is possible to easily obtain a large damping force even if it is lightweight and small, and the gap forming member 1
Since 4 is rotatably supported by the rotating body 11 and the fixed member 12, the gap forming member 14 is firmly supported, and the damper 2 having no fluctuation in the gap 13 can be obtained.

In the damper 2 described above, the lid 55 is provided by being screwed onto the inner peripheral surface 53 of the tubular portion 52 of the gap forming member 14,
Instead, as shown in FIG. 7, a threaded portion 97 is formed on the outer peripheral surface 73 of the tubular portion 52 of the gap forming member 14, and the lid 55 is threaded onto the outer peripheral surface 73 of the tubular portion 52 by the threaded portion 97. The lid body 55 may be screwed onto the outer peripheral surface 73 of the tubular portion 52 of the gap forming member 14, and the damper 2 prevents the silicone-based unvulcanized rubber 15 from leaking. Although no seal member is provided for the lid 55, as shown in FIG.
An annular seal member 98, such as an O-ring, is interposed between the inner peripheral surface 68 of the cylindrical portion 23 and the outer peripheral surface 27 of the cylindrical portion 23 to form the gap 13
Leakage of the silicone-based unvulcanized rubber 15 to the outside of the damper 2 may be prevented.

In the above, the rear seat 3 is attached to the rotating body 11.
The lateral rotation R1 of the rear seat 3 is fixed to the mounting portion 93 by transmitting the lateral rotation R1 of the rear seat 3 instead of the fixing member 12. May be fixed to the mounting portion 93. In this case, the fixing member 12 serves as a rotating body, the rotating body 11 serves as a fixing member, and the coil spring 7 of the one-way clutch means 16 is provided.
4, one end 71 is fixed to the rotating body, and the other end 72 is a free end on the cylindrical outer peripheral surface 73 of the gap forming member 14,
It is wound around the cylindrical outer peripheral surface 73 of the gap forming member 14 between the one end 71 and the other end 72 in a winding direction such that the one-way clutch function is obtained.

Further, in the above, the rear seat 3 is laterally rotated R1.
It is an example of the automobile seat mechanism 1 rotatably installed in the direction of, but instead of this, an automobile seat in which a rear seat 3 is installed rotatably in the front-rear direction R3 as shown in FIGS. 9 and 10. The damper 2 may be used in the mechanism 1.

The automobile seat mechanism 1 shown in FIGS. 9 and 10.
Then, the damper 2 is housed in the side frame 101, and the fixing member 12 of the damper 2 has the mounting plate portion 46.
Is fixed to the side frame 101 or floor plate 102 of the automobile and is fixed to the chassis of the automobile, and the rotating body 11 has a cylindrical outer peripheral surface of the disc portion 21 and the cylindrical portion 2.
The seat bracket 1 in which an external shaft portion 24 having a spline 103 formed on the outer peripheral surface thereof is fixed to the rear seat 3 at one end 104 in place of a part of the spline 25 on the outer peripheral surface 27 of the outer peripheral surface 3 of FIG.
05 is spline-coupled to the hole 107 of the other end 106 of
Rotation of the rear seat 3 in the front-rear direction R3 is transmitted, and the rotating body 11 includes the side frame 101.
Is rotatably supported in the front-rear direction R3 on the side frame 101 by a part of the disk portion 21 and the cylindrical portion 23 which are inserted into the holes 111 formed in the outer peripheral surface and each have a smooth outer peripheral surface, The backrest 4 is provided rotatably in the front direction R4 with respect to the rear seat 3. The other seat bracket 116 fixed to the rear seat 3 at one end 115 is rotatably supported in the other side frame (not shown) of the automobile at the other end 117 in the front-rear direction R3 via a shaft or the like. There is.

In the vehicle seat mechanism 1 shown in FIGS. 9 and 10, after the backrest 4 is rotated in the front direction R4 to overlap the rear seat 3 (after being folded), the rear seat 3 is moved backward in the front-rear direction R3. After rotating, it is further rotated in the lower direction to be housed in the recess 121 formed in the floor plate 102 of the automobile, so that a large in-car living space can be provided as shown in FIG. 11
In the state shown in FIG. 3, the rear seat 3 is rotated in the raising direction so as to be taken out from the recess 121, and then is rotated forward in the front-rear direction R3 to be brought into contact with the stopper 122 attached to the side frame 101, and thereafter, the backrest. It can be returned to its original position by rotating 4.

An automobile seat mechanism 1 shown in FIGS. 9 and 10.
Then, the coil spring 74 is arranged in the front-rear direction R3 of the rear seat 3.
In the rearward rotation including the lowering direction, the diameter is reduced, and in the frontward and rearward direction R3 of the rear seat 3 including the raising direction, the diameter is increased. Therefore, in this example,
The one-way clutch means 16 is arranged in the front-rear direction R of the rear seat 3.
In the rearward rotation of the rear seat 3, relative rotation based on the rearward rotation including the lowering direction in the front-rear direction R3 is generated between the gap forming member 14 and the rotating body 11, while the rearward rotation of the rear seat 3 in the front-rear direction R3. In the forward rotation including the raising direction, relative rotation based on the forward rotation including the raising direction does not occur in the front-rear direction R3 between the gap forming member 14 and the rotating body 11, in other words, In the forward rotation of the rear seat 3 including the raising direction in the front-rear direction R3, the rotating body 11 is rotated through the silicone-based unvulcanized rubber 15.
While the gap forming member 14 is rotated along with the rotation of the rear seat 3, the rearward rotation of the rear seat 3 including the lowering direction in the front-rear direction R3 causes the rotation of the rotating body 11 through the silicone-based unvulcanized rubber 15. The rotation of the gap forming member 14 that is continuous is prohibited.

The automobile seat mechanism 1 shown in FIGS. 9 and 10.
Then, the damper 2 is housed in the side frame 101, but instead of this, the damper 2 may be installed outside the side frame 101, or the damper 2 may be installed on the other seat bracket 116 side.

[0056]

According to the present invention, a large damping force can be obtained and the size can be reduced. In particular, the backrest is extended or folded, and then the seat is flipped up in the lateral direction. It is possible to provide a damper suitable for a vehicle seat that can be rotated rearward, and an automobile seat mechanism including the damper.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view of an example of a preferred embodiment of a damper for an automobile seat of the present invention.

2 is a left side view of the example shown in FIG. 1. FIG.

3 is a cross-sectional view taken along the line III-III of the example shown in FIG.

FIG. 4 is a perspective view of an example of an automobile seat mechanism using the example shown in FIG.

5 is a perspective view with a part cut away in the example shown in FIG. 4. FIG.

FIG. 6 is an operation explanatory diagram of the example shown in FIG.

FIG. 7 is a sectional explanatory view of another example of the preferred embodiment of the present invention.

FIG. 8 is a sectional explanatory view of still another example of the preferred embodiment of the present invention.

FIG. 9 is a perspective view of still another example of the preferred embodiment of the present invention.

10 is a partially enlarged view of the example of FIG.

11 is an operation explanatory diagram of the example of FIG. 9;

[Explanation of symbols]

1 Car seat mechanism 2 damper 3 rear seats 11 rotating body 12 fixing members 14 Gap forming member 15 Silicone-based unvulcanized rubber 16 One-way clutch means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Miteru Igarashi             8 Kirihara Town, Fujisawa City, Kanagawa Prefecture             Fujisawa business site F-term (reference) 3B087 CA08 CA16 DA07 DA09 DE05                 3J069 AA41 BB10 DD50

Claims (22)

[Claims] 1. A rotating body adapted to transmit rotation of a vehicle seat, and a fixing member adapted to be fixed to a chassis on which the vehicle seat is rotatably installed. A gap forming member interposed between the rotating body and the fixing member and forming a gap in cooperation with one of the rotating body and the fixing member; a silicone-based unvulcanized rubber disposed in the gap; The rotation of the sheet in one direction is based on the rotation in one direction between the gap forming member and one of the rotating body and the fixing member that cooperate with the gap forming member to form a gap. While causing relative rotation, when the seat of the automobile is rotated in the other direction, the gap forming member and one of the rotating member and the fixing member that cooperate with the gap forming member to form a gap. Relative based on rotation in the other direction between Damper for a motor vehicle seat, which includes a one-way clutch means for preventing a normal rotation. 2. The rotating body is adapted to transmit lateral rotation of a seat of an automobile in a raising and lowering direction, and the fixing member is fixed to a chassis on which the seat of the automobile is rotatably installed. The one-way clutch means, in the lateral rotation in the downward direction of the seat of the automobile,
Relative rotation is generated between the gap forming member and one of the rotating member and the fixing member that cooperate with the gap forming member to form a gap, while a relative rotation based on the lateral rotation in the lowering direction is generated, and an automobile seat In the horizontal rotation in the raising direction, the relative movement based on the horizontal rotation in the raising direction between the gap forming member and one of the rotating body and the fixing member that cooperate with the gap forming member to form the gap. The damper for an automobile seat according to claim 1, wherein the damper is prevented from causing an excessive rotation. 3. The rotating body is adapted to transmit the rotation of the vehicle seat in the front-rear direction, and the fixing member is attached to the chassis on which the vehicle seat is rotatably installed in the front-rear direction. The one-way clutch means includes a gap forming member and a rotating body and a fixing member that cooperate with the gap forming member to form a gap when the vehicle seat rotates rearward. A relative rotation based on a backward rotation is generated between the first and the other of them, and in the forward rotation of the vehicle seat, the gap forming member and the gap forming member cooperate to form a gap. The damper for an automobile seat according to claim 1, wherein relative rotation due to forward rotation between the rotating body and one of the fixing member to be formed is prevented. 4. A rotating body adapted to transmit the rotation of a seat of an automobile, a gap forming member which cooperates with the rotating body to form a gap, and a silicone-based unadded member disposed in the gap. The vulcanized rubber and the fixing member that rotatably supports the gap forming member and is fixed to the chassis on which the vehicle seat is rotatably installed, and the rotation direction of the vehicle seat in one direction. In operation, the gap forming member is rotated in one direction along with the rotation of the rotating body in one direction via the silicone-based unvulcanized rubber, while the rotation of the automobile seat in the other direction is performed. (1) A damper for an automobile seat, comprising: a one-way clutch means for inhibiting rotation of the gap forming member connected to the other rotation of the rotating body via the silicone-based unvulcanized rubber in the other direction. 5. The rotating body is adapted to transmit lateral rotation of a seat of an automobile in a raising / lowering direction, and the fixing member is fixed to a chassis on which the seat of the automobile is rotatably installed. The one-way clutch means, in the lateral rotation in the raising direction of the seat of the vehicle,
The gap forming member is made to rotate with the rotation of the rotating body through the silicone-based unvulcanized rubber, while rotation is performed through the silicone-based unvulcanized rubber when the vehicle seat is laterally rotated in the downward direction. The damper for an automobile seat according to claim 4, wherein rotation of the gap forming member that follows the rotation of the body is prohibited. 6. The rotating body is adapted to transmit the rotation of the vehicle seat in the front-rear direction, and the fixing member is attached to the chassis on which the vehicle seat is rotatably mounted in the front-rear direction. The one-way clutch means is fixed, and in the rearward rotation of the seat of the automobile, the gap forming member is rotated with the rotation of the rotating body through the silicone-based unvulcanized rubber. On the other hand, when the seat of the vehicle is rotated in the front direction, the rotation of the gap forming member that is connected to the rotation of the rotating body via the silicone-based unvulcanized rubber is prohibited. Dampers for car seats. 7. The damper for an automobile seat according to claim 1, wherein the gap forming member is rotatably supported by at least one of the rotating body and the fixing member. 8. The gap forming member has a cylindrical outer peripheral surface, and the one-way clutch means has one end fixed to the rotating body or the fixed member, and the other end having a cylindrical outer periphery of the gap forming member. 8. The coil spring according to claim 1, further comprising a coil spring that is a free end on a surface and is wound around a cylindrical outer peripheral surface of the gap forming member between one end and the other end. Dampers for car seats. 9. The rotating body includes a shaft portion and a cylindrical portion concentric with the shaft portion, and the gap forming member includes a main body slidably in contact with the shaft portion of the rotating body, and With a cylindrical part that is concentric with the main body,
The damper for an automobile seat according to any one of claims 1 to 8, further comprising: a lid screwed to the tubular portion. 10. The damper for an automobile seat according to claim 9, wherein a spline is formed on the outer peripheral surface of the cylindrical portion of the rotating body. 11. The damper for an automobile seat according to claim 9, wherein the lid is screwed to the outer peripheral surface or the inner peripheral surface of the tubular portion of the gap forming member. 12. The damper for an automobile seat according to claim 9, wherein a seal member is interposed between the lid body and the cylindrical portion of the rotating body. 13. The damper for an automobile seat according to claim 1, wherein the silicone-based unvulcanized rubber has a plasticity of 30 to 420. 14. The damper for an automobile seat according to claim 1, wherein the silicone-based unvulcanized rubber has a plasticity of 60 to 320. 15. The damper for an automobile seat according to claim 1, wherein the silicone-based unvulcanized rubber has a plasticity of 160 to 320. 16. The damper for an automobile seat according to claim 1, wherein the silicone-based unvulcanized rubber has a Mooney viscosity of 10 to 150 ML 1 + 4 (100 ° C.). 17. The damper for an automobile seat according to claim 1, wherein the silicone-based unvulcanized rubber has a Mooney viscosity of 36 to 72 ML 1 + 4 (100 ° C.). 18. The damper for an automobile seat according to claim 1, wherein the silicone-based unvulcanized rubber has a Mooney viscosity of 66 to 72 ML 1 + 4 (100 ° C.). 19. The silicone-based unvulcanized rubber comprises a silicone-modified ethylene propylene rubber.
The damper for a car seat according to any one of 2 and 16 to 18. 20. A vehicle seat damper according to any one of claims 1 to 19, a seat rotatably provided on a chassis of an automobile, and a seat rotatably with respect to the seat. An automobile seat mechanism having a backrest provided. 21. The automobile seat mechanism according to claim 20, wherein the backrest is provided so as to be rotatable rearward with respect to the seat. 22. The automobile seat mechanism according to claim 20, wherein the backrest is provided so as to be rotatable forward with respect to the seat.