JP2009101762A - Damper device for in-vehicle seat and slide type seat equipped therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damper device for an in-vehicle seat for cushioning the slide movement of the in-vehicle seat and a slide seat using the damper device. <P>SOLUTION: The damper device (4) for the in-vehicle seat cushions the movement when moving the slide of the seat (2) slidably provided on a cabin floor (1) of a vehicle. The damper device (4) is characterized in that it has a rotary member (5) which is rotatably supported to one side of the cabin floor and the seat and a connecting member (7) which is fixed to the other side of the cabin floor and the seat, moved by the slide movement of the seat and rotates the rotary member, and a rotary damper (8) which is drive-connected with the rotary shaft of the rotary member and attenuates the rotary movement of the rotary member. It is preferable that a belt is used for the connecting member and a pulley is used for the rotary member. Furthermore, a wire can be used for the connecting member and a winding drum can be used for the rotary member. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seat damper device, and more particularly, to a damper device that cushions sliding movement of a seat that is slidably provided on a passenger compartment floor, and a seat provided with the damper device.

  Conventionally, a front seat of a sedan car, a seat of a one-box car, and the like are provided so as to be slidable in the front-rear direction of the vehicle body, and the seat position can be adjusted to an arbitrary position by a passenger's manual operation. In general, the seat is fixed (locked) to the passenger compartment floor in a normal state, and when the passenger pulls the manual operation lever, the lock between the seat and the floor is released, and the seat can be moved. And after arrange | positioning a sheet | seat in arbitrary positions, a sheet | seat is locked again to a floor part by returning a manual operation lever.

In such a seat, the seat and the floor are unlocked while the seat position is being adjusted, so that if the vehicle suddenly starts, the seat suddenly moves to the rear due to the inertial force. However, the passenger may be shocked. In addition, when the seat is urged toward the front of the vehicle body for easy adjustment of the seat position, the seat is suddenly moved toward the front of the vehicle body at the moment the lock is released by the manual operation lever. May be shocked. In order to prevent such a rapid movement of the seat, there is one provided with a piston damper as a damper device between the seat and the passenger compartment floor (for example, Patent Document 1). In addition, a damper device having a rack gear and a pinion gear meshing with the rack gear is provided between the seat and the passenger compartment floor, and a friction force is applied to a disk formed integrally with the pinion gear to suppress rotation, thereby rapidly increasing the seat speed. Some have prevented movement (for example, Patent Document 2).
Japanese Utility Model Publication No. 63-104238 JP-A-2-81739

  However, when a piston damper is used as the damper device, the slidable distance of the seat is limited by the length of the piston shaft of the piston damper. Therefore, there is a problem that a long and large piston damper is required in order to lengthen the slide movable distance of the seat. In addition, when using a damper device using a rack gear and a pinion gear, a point that requires a long rack gear corresponding to the slide movable distance, and the meshing of the rack gear and the pinion gear are maintained over the entire slide movement distance. There is a problem in that precise assembly is required.

  The present invention has been made in view of the above problems, and it is possible to buffer the sliding movement of a seat with a simple structure without using a device such as a long piston damper or a rack and pinion, and the vehicle seat damper device. An object of the present invention is to provide a slide sheet using a damper device.

  In order to solve the above-mentioned problems, a first invention of the present invention is a vehicle-mounted seat that cushions movement during sliding movement of a seat (2) that is slidable relative to a vehicle compartment floor (1) of a vehicle Damper device (4), a rotary member (5) rotatably supported on one of the vehicle compartment floor and the seat, and fixed to the other of the vehicle compartment floor and the seat, and sliding movement of the seat And a rotary member (8) that is driven and connected to the rotating shaft of the rotating member and attenuates the rotating operation of the rotating member.

  The second invention is characterized in that, in the first invention, the rotary damper is drivingly connected to the rotating member via a one-way clutch (58).

  According to a third aspect, in the first aspect, the rotary damper is a rotary damper that exhibits a buffering action only in one direction of rotation.

  According to a fourth invention, in the first to third inventions, the connecting member is a belt (7), and the rotating member is a pulley (5) spanning the belt.

  According to a fifth invention, in the first to third inventions, the connecting member is a wire (130), and the rotating member is a winding drum (110) to which one end of the wire is fixed. And

  A sixth invention is a sliding seat provided with the on-vehicle seat damper device according to any one of the first to fifth inventions, and the seat is slidable in the vehicle front-rear direction with respect to the passenger compartment floor. The urging means (9) for urging the seat forward in the vehicle front-rear direction is provided, and the damper device buffers at least the rearward movement of the seat in the vehicle front-rear direction.

  According to the first invention, the linear motion in the front-rear direction of the seat is converted into rotational motion by the rotating member via the connecting member, and the rotational motion is buffered by the rotary damper. In other words, the rotation of the rotating member is buffered by the rotary damper, and the movement of the connecting member linked to the rotating member is buffered. Therefore, the sliding movement of the sheet connected to the connecting member is suddenly received by the buffering action of the rotary damper. Movement is prevented. According to the second aspect of the invention, since the rotating member receives a buffering action from the rotary damper only in one rotational direction, the movement of the connecting member is buffered only in one direction, and the relative movement of the seat and the vehicle compartment floor is buffered only in one direction. Will come to be. For example, when the seat is slidable in the front-rear direction of the vehicle body, the buffering action can be generated only in the rearward movement of the seat in the front-rear direction of the vehicle body. According to the third aspect, the same effect as the second aspect can be achieved without using a one-way clutch. According to the fourth aspect, the linkage between the connecting member and the rotating member can be easily formed with a simple structure. In addition, the use of a belt can reduce the weight and noise of the apparatus and eliminate the need for lubrication. According to the fifth aspect, even if a wire is used for the connecting member, the same effect as in the fourth aspect can be obtained. According to the sixth invention, when the vehicle suddenly starts at the time of seat position adjustment, it is possible to prevent the seat from suddenly moving backward in the longitudinal direction of the vehicle body, and to reduce the impact applied to the occupant. it can.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The first embodiment is an example in which the seat damper device and the sliding seat according to the present invention are applied to a front seat of a vehicle.

  FIG. 1 is an exploded perspective view showing the sliding seat according to the first embodiment. FIG. 2 is a cross-sectional view showing the sliding seat according to the first embodiment. FIG. 3 is an exploded perspective view of the slide seat damper device according to the first embodiment. In the following description, front and rear in the longitudinal direction of the vehicle body are omitted, and front and rear, vertical upper and lower are omitted, and upper and lower are described.

  As shown in FIG. 1, the vehicle compartment floor 1 is located between two rail grooves 11 extending in the longitudinal direction of the vehicle body and between the two rail grooves 11, and also extends in the longitudinal direction of the vehicle body. A damper groove 12 is formed. In addition, a recess 13 that is connected to the rail groove 11 is provided at the front end of the two rail grooves 11. The recess 13 is used as a work space when attaching a slide rail 3 to be described later, and in the second embodiment, a drum device that is a component of the damper device is disposed. The recess 13 may not be provided in the first embodiment.

  The two rail grooves 11 are provided with slide rails 3 that support an in-vehicle seat 2 (hereinafter referred to as seat 2) so as to be slidable in the longitudinal direction of the vehicle body. The slide rail 3 includes a lower rail 31 extending in the vehicle body front-rear direction and an upper rail 32 supported so as to be slidable in the vehicle body front-rear direction with respect to the lower rail 31. The lower rail 31 is fixed to the bottom of the rail groove 11. The upper rail 32 is supported by the lower rail 31 via a ball, for example. The upper portion of the upper rail 32 is coupled to a seat support leg 33 provided on a side portion of the bottom portion of the seat 2. In this way, the seat 2 is fixed to the passenger compartment floor 1 via the two slide rails 3 and can be slid in the longitudinal direction of the vehicle body.

  As shown in FIGS. 1 and 2, the damper groove 12 is provided with a damper device 4 for buffering the sliding movement of the seat 2. The damper device 4 is bridged between two pulley devices 5 and 6 as rotating members rotatably supported at the bottom of the damper groove 12 and the two pulley devices 5 and 6 and is fixed to the seat 2 in part. The annular belt 7 and the rotary damper 8 provided coaxially with the rotation shaft of one pulley device 5 are included as main components.

  As shown in FIG. 3, the two pulley devices 5, 6 are provided at the front end portion and the rear end portion of the damper groove 12, and the front pulley device 5 is provided at the front end portion, and the rear end portion The rear pulley device 6 is provided on the rear side. The front pulley device 5 includes a pulley 51 that supports the annular belt 7, a rotating shaft 52 that is fixed to the pulley 51 as a rotating shaft of the pulley 51, and extends in the radial direction of the rotating shaft 52, and rotates the rotating shaft 52. The upper plate 53 and the lower plate 54 are supported freely, and the column 55 is used to fix the upper plate 53 and the lower plate 54 with a predetermined gap. Further, the rotating shaft 52 may be supported by the upper plate 53 and the lower plate 54 via the bearing 56.

  As with the front pulley device 5, the rear pulley device 6 includes a pulley 61 that supports the annular belt 7, a rotating shaft 62 that is fixed to the pulley 61 as a rotating shaft of the pulley 61, and a radial direction of the rotating shaft 62. And an upper plate 63 and a lower plate 64 that rotatably support the rotary shaft 62, and a column 65 that fixes the upper plate 63 and the lower plate 64 with a predetermined gap. Further, the rotating shaft may be supported by the upper plate 63 and the lower plate 64 via the bearing 66.

  The front and rear pulley devices 5 and 6 are provided such that the lower plates 54 and 64 are in contact with the bottom surface of the damper groove 12. Therefore, the rotation axes of the pulleys 51 and 61 are parallel to each other and are perpendicular to the bottom surface of the damper groove 12.

  The annular belt 7 spanned between the pulleys 51 and 61 is an annular belt having flexibility. The annular belt 7 may be a flat belt or a V belt, but is preferably a toothed belt (cogged belt) having teeth on the surface in contact with the pulleys 51 and 61. In this case, a tooth shape (unevenness) that matches the teeth of the annular belt 7 is formed on the surface of the pulleys 51 and 61 in contact with the annular belt 7.

  As shown in FIG. 2, the annular belt 7 is fixed to the bottom of the seat 2 by a belt fixing member 21. The belt fixing member 21 is, for example, a member obtained by bending a flat plate into an L shape, and is fixed to a part of the annular belt 7 at one end and fixed to the bottom of the sheet at the other end. The annular belt 7 and the belt fixing member 21 may be fixed, for example, by holding the annular belt 7 between flat plates and screwing the flat plate to the belt fixing member 21 with bolts and nuts. . By forming in this way, when the seat 2 slides in the longitudinal direction of the vehicle body, the portion of the annular belt 7 fixed to one end of the belt fixing member 21 moves in conjunction with the movement of the seat 2. 7 is driven to rotate 51/61 pulleys. And the rotating shaft 52 fixed to the pulley 51 rotates.

  The rotary damper 8 may be a known bidirectional rotary damper. The rotary damper 8 includes, for example, a cylindrical main body case 81 and a rotor rotation shaft (not shown) that is coaxial with the cylindrical axis and protrudes from the main body case 81. The rotor rotation shaft is rotatably supported by the main body case 81 and has a rotor (not shown) in a portion enclosed in the main body case. The inside of the main body case 81 is filled with oil such as silicon oil, for example. The rotary damper 8 applies a load to the rotor and brakes the rotation of the rotor rotation shaft by the viscous resistance of oil flowing through the gap between the main body case 81 and the rotor. The rotary damper 8 is fixed on the upper plate 53 so that the rotor rotating shaft is coaxial with the rotating shaft 52 of the front pulley device 5. The rotor rotation shaft and the rotation shaft 52 have shapes that engage with each other on the contact surface, and are fixed by being engaged with each other, and rotate in conjunction with each other.

  As shown in FIG. 2, an assist spring 9 is provided between the seat 2 and the passenger compartment floor 1. The assist spring 9 is a constant load spring, one end of which is fixed and wound around a bobbin 91 rotatably supported by an assist spring seat 22 that extends downward from the rear portion of the bottom of the seat 2. The end is fixed to the passenger compartment floor 1. Since the assist spring 9 is elastically wound so as to be wound around the coil, the seat 2 is always elastically biased forward with respect to the passenger compartment floor 1.

  A lock mechanism (not shown) is provided between the seat 2 and the vehicle compartment floor 1 to fix the relative position of the seat 2 with respect to the vehicle compartment floor 1 in the vehicle longitudinal direction. The locking mechanism normally fixes the seat 2 to the passenger compartment floor 1 and moves the seat 2 only while the operation input lever (lock release lever, not shown) provided on the locking mechanism is being operated. It is movable with respect to the room floor 1.

  The effect of 1st Embodiment is demonstrated. With the configuration described above, the seat 2 can slide in the longitudinal direction of the vehicle body with respect to the passenger compartment floor 1 while operating the operation input lever of the lock mechanism. When the seat 2 is slid, the belt fixed to the seat 2 via the belt fixing member 21 moves in conjunction with the rotation of the pulley 51 and 61 to rotate the pulley 51 and 61. The shaft 52 is rotated. At this time, the rotating shaft 52 is connected to the rotor rotating shaft 82 of the rotary damper 8, and therefore receives a rotational load of the rotary damper 8, that is, a buffering action of the rotary damper 8. As a result, the pulley 51 fixed to the rotating shaft and the annular belt 7 linked to the pulley 51 are subjected to a resistance force against the force for rotating the annular belt 7 around the pulley 51. The sheet 2 fixed via the belt fixing member 21 has a resistance to sliding movement. In other words, the seat 2 receives the buffering action of the rotary damper 8 through the rotary shaft 52, the pulley 51, and the belt fixing member 21, and the sliding movement is buffered. By this action, for example, the inertia generated by the sudden slide movement of the seat 2 forward by the urging force of the assist spring 9 when the lock mechanism is released, or when the vehicle suddenly starts when the lock mechanism is released. Sudden slide movement of the seat 2 due to force can be buffered, and the impact applied to the occupant can be mitigated.

  In the present embodiment, a toothed belt is used for the annular belt 7 and the tooth shapes corresponding to the teeth of the annular belt 7 are formed on the pulleys 51 and 61. Therefore, slip occurs between the annular belt 7 and the pulleys 51 and 61. do not do. Therefore, even when a strong force such as an inertial force generated when the vehicle suddenly starts is applied to the seat 2, the slip between the annular belt 7 and the pulley 51 is prevented, and the cushioning action of the rotary damper 8 is reliably ensured. 2 can be told.

  In the first embodiment, the rotary damper 8 is provided only in the front pulley device 5, but instead, the rotary damper 8 may be provided only in the rear pulley device 6. Further, the rotary damper 8 may be provided in both the front pulley device 5 and the rear pulley device 6.

  The length of the annular belt 7 and the distance between the front and rear pulley devices 5 and 6 may be arbitrarily set according to the slide movement distance of the seat 2.

  Next, a partially modified example implemented by changing a part of the first embodiment will be described. FIG. 4 is an exploded cross-sectional view of a slide seat damper device according to a modification of the first embodiment. Hereinafter, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  The partially modified example of the first embodiment differs from the first embodiment only in the configuration of the front pulley device 5. As shown in FIG. 4, in a partially modified embodiment, the pulley 57 is provided on the rotating shaft 52 via a one-way clutch 58. The one-way clutch 58 may be a known one-way clutch, for example, a rotor type one-way clutch. The one-way clutch 58 has an outer cylinder 58a and an inner cylinder 58b, and a clutch mechanism (not shown) is provided between the outer cylinder 58a and the inner cylinder 58b. The outer cylinder 58 a of the one-way clutch 58 is fixed to the pulley 57, and the inner cylinder 58 b is fixed to the rotating shaft 52. The one-way clutch 58 transmits only the rotational force in one direction of the pulley 57 to the rotating shaft 52, and idles in response to the reverse rotation of the pulley 57, and does not transmit the rotating force to the rotating shaft 59. In a partially modified embodiment, when the seat 2 slides backward, the clutch of the one-way clutch 58 is engaged with the rotation direction in which the pulley 57 is rotated by the annular belt 7 and the rotary shaft 52 is rotated. Has been.

  The effect of the partial modification example of the first embodiment will be described. With such a configuration, the cushioning action of the rotary damper 8 can be applied to the seat 2 only for the backward sliding movement of the seat 2. Usually, the occupant holds his / her foot against the forward movement of the seat 2 to regulate and adjust the movement of the seat 2. Therefore, the cushioning action for the forward movement of the seat 2 is omitted, and the seat 2 is moved quickly, so that the adjustment work of the seat position becomes quick and easy, and the workability and comfort of the adjustment work are improved. Can do.

  In some modified embodiments, the one-way clutch 58 is used to exert the buffering action of the rotary damper 8 only in one direction of movement of the seat 2. However, the one-way clutch is not used and the rotary damper 8 is known. Even if a unidirectional rotary damper is used, the same effect can be obtained. In this case, as in the first embodiment, the pulley 51 and the rotating shaft 52 fixed to each other are used.

  Next, a second embodiment of the present invention will be described with reference to the drawings. The second embodiment is an example in which the seat damper device and the sliding seat according to the present invention are applied to a front seat of a vehicle. FIG. 5 is a perspective view showing a slide type seat according to the second embodiment, in which the sheet is omitted. FIG. 6 is an exploded perspective view of the slide seat damper device according to the second embodiment. Hereinafter, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  The second embodiment is the same as the first embodiment in the configuration of the passenger compartment floor 1, the seat 2, and the slide rail 3, and is different in the configuration of the damper device 100 and the connection structure between the damper device 100 and the seat 2.

  As shown in FIG. 5, a damper device 100 that buffers sliding movement of the seat 2 in the longitudinal direction of the vehicle body is provided in the recess 13. The damper device 100 includes a drum (winding drum) device 110 as a winding drum that is rotatably supported at the bottom of the recess 13 of the vehicle compartment floor 1, one end fixed to the upper rail 32, and the other end to the drum device 110. And a rotary damper 8 provided coaxially with the rotating shaft of the drum device 110 as main components. The wire 130 is fixed to the upper rail 32 and the drum device 110 by, for example, a wire clip, and moves in the lower rail 31.

  As shown in FIG. 6, the drum device 110 includes a drum 111 on which one end of a wire 130 is fixed and the wire 130 is wound, two side plates 112 and 113 that rotatably support the drum 111, and two side plates. The main component includes a support plate 114 and a bottom plate 115 that support 112 and 113 at a predetermined distance, and a constant load spring 121 that biases the drum 111 in one rotational direction.

  The drum 111 is formed in a hollow cylindrical shape, and rotates about the axis of the cylinder as a rotation axis. The cylindrical surface has a wire winding groove 116 and a spring winding groove 117 formed in the circumferential direction. One end of a wire 130 is fixed to the wire winding groove 116, and one end of a constant load spring 121 is fixed to the spring winding groove 117. Further, the wire 130 and the constant load spring 121 are fixed to the drum 111 so that the winding directions of the wire 130 and the constant load spring 121 around the drum 111 are opposite to each other. Thus, when the wire 130 is wound around the wire winding groove 116 of the drum 111, the constant load spring 121 is fed out from the wire winding groove 116 of the drum 111, and the wire 130 is pulled from the wire winding groove 116 of the drum 111. When fed out, the constant load spring 121 is wound around the wire winding groove 116 of the drum 111. A cylindrical bush 118 is inserted into the drum 111 and fixed to the drum 111.

  A drum support shaft 119 and a bobbin support shaft 120 are fixed to the side plate 112. The drum support shaft 119 is formed of a cylindrical shaft portion 119a and a flange portion 119b formed at one end thereof. The shaft portion 119a of the drum support shaft 119 passes through the hole 112a formed in the side plate 112, and the flange portion 119b of the drum support shaft 119 and the side plate 112 are fixed, whereby the drum support shaft 119 is perpendicular to the side plate. It is fixed to. Similarly, the bobbin support shaft 120 is formed of a cylindrical shaft portion 120a and a flange portion 120b formed at one end thereof, and the shaft portion 120a of the bobbin support shaft 120 passes through a hole 112b formed in the side plate 112. The bobbin support shaft 120 is fixed perpendicularly to the side plate by fixing the flange portion 120b of the bobbin support shaft 120 and the side plate 112. The support plate 114 is formed with a hole 114 a serving as a passage for the wire 130.

  A bush 118 fixed to the drum 111 is rotatably supported on the shaft portion 119a of the drum support shaft 119. The other end of the constant load spring 121 is fixed to the shaft portion 120a of the bobbin support shaft 120, and a bobbin 122 around which the constant load spring 121 is wound is rotatably supported. The position of the bobbin 122 on the shaft portion 120a of the bobbin support shaft 120 is regulated to a predetermined position by the spacer 123.

  The side plate 113 is fixed to the side plate 112 via the support plate 114 and the bottom plate 115, rotatably supports the tip end portion of the shaft portion 120a of the bobbin support shaft 120, and supports the bush 118 rotatably through the hole 113a. . The bush 118 protrudes outward of the side plate 113 through the hole 113 a of the side plate 113.

  With this configuration, the drum device 110 that can wind the wire 130 around the wire winding groove 116 of the drum 111 is configured. In the drum device 110, the drum 111 is biased in the rotational direction of winding the wire 130 by an elastic force that attempts to return to the state of being wound around the bobbin of the constant load spring 121.

  The drum device 110 is provided with a rotary damper 8 so that the rotating shaft of the drum 111 and the rotor rotating shaft of the rotary damper 8 are coaxial. The contact surface between the rotor rotation shaft and the tip of the bush 118 has a shape that engages with each other, and the rotor rotation shaft and the bush 118 are fixed by engaging with each other. The rotary damper 8 here is a unidirectional rotary damper, and is provided so as to give a rotational load, that is, a buffering action, to the rotation of the drum 111 in the direction in which the wire 130 is fed out.

  The effect of 2nd Embodiment is demonstrated. When the lock mechanism is released and the seat 2 slides backward, the upper rail 32 fixed to the seat 2 via the seat support legs 33 moves rearward, so the wire fixed to the upper rail 32 130 is pulled backwards. Therefore, a rotational force is applied to the drum 111 around which the other end of the wire 130 is wound in the direction in which the wire 130 is sent out. Here, the drum 111 is fixed to the rotor rotation shaft of the rotary damper 8 via the bush 118 and receives a rotational load of the rotary damper 8, so that a buffering action is applied to the rotation of the drum 111. Therefore, the movement of the wire 130 and the upper rail 32 is also buffered by receiving a load, and the rearward movement of the seat 2 is buffered. As a result, the rapid rearward movement of the seat 2 due to the sudden start of the vehicle when the lock mechanism is released is buffered, and the impact applied to the occupant is mitigated.

  The constant load spring 121 urges the drum 111 in the direction of winding the wire 130 and prevents the wire 130 between the upper rail 32 and the drum 111 from sagging.

  In the second embodiment, a unidirectional rotary damper is used as the rotary damper 8. However, as in the case of a partial modification of the first embodiment, a bi-directional rotary damper is used, and the drum 111, the bush 118, A one-way clutch may be arranged between them so that only one-way rotation is transmitted to the rotor rotation shaft of the rotary damper. In the second embodiment, the damper device 100 is provided only on the left slide rail 3 when the front of the seat 2 is the front. However, the damper device 100 may be provided on the right slide rail 3 or both the left and right slide rails 3. May be provided. Further, one end of the wire 130 may be fixed directly to the seat 2 without being fixed to the upper rail 32 or to another member fixed to the seat 2.

  Next, a partially modified example implemented by changing a part of the second embodiment will be described. FIG. 7 is a perspective view showing a slide type seat according to a modified example of the second embodiment, with the sheet 2 removed. FIG. 8 is an exploded perspective view showing a slide seat damper device according to a modification of the second embodiment. Hereinafter, the same components as those of the second embodiment are denoted by the same reference numerals as those of the second embodiment, and description thereof is omitted.

  The partially modified example of the second embodiment is different from the second embodiment in the configuration of the drum device 110a and the arrangement position of the wire 130a. As shown in FIG. 8, in the partially modified embodiment, the drum 111a is formed with a first wire winding groove 116a and a second wire winding groove 116b. The wire 130a is disposed along the slide rail 3 so that one end of the wire 130a is fixed to the first wire winding groove 116a and then proceeds to the rear side in the slide rail 3, and then provided on the rear side of the slide rail 3. It is arranged along the slide rail 3 so as to change the direction to the front side via the pulley 140 and to move forward in the slide rail 3, and the other end of the slide rail 3 protrudes from the front end. It is fixed to the winding groove 116b. The wire 130a forms a ring shape through the drum 111a. The support plate 114 is formed with holes 114a and 114b that serve as passages for the wire 130a.

  The wire 130a is wound in advance by a predetermined amount in both the first and second wire winding grooves 116a and 116b or one of the wire winding grooves 116a and 116b, and the wire 130a is wound on the first wire winding groove 116a. The rotation direction wound around the second wire winding groove 116b is different from the rotation direction wound around the second wire winding groove 116b. Thus, when the drum 111a rotates in one direction, the wire 130a is wound in one wire winding groove, and the wire 130a is sent out in the other wire winding groove. The wire 130a is a continuous linear part, and is coupled to the upper rail 32 by a fastening member such as a wire clip.

  The drum device 110a is provided with the rotary damper 8 as in the second embodiment. The rotary damper 8 here is a bidirectional rotary damper, and the rotor rotation shaft is the same as in the second embodiment. And the tip of the bush 118 are fixed.

  The effect of the partial modification example of 2nd Embodiment is demonstrated. With this configuration, it is possible to exhibit the buffering action of the rotary damper 8 only with respect to the forward and backward sliding movement of the seat 2. By fixing both ends of the wire 130a to the drum 111a, the wire 130a is pulled by the sheet 2 with respect to any forward or backward movement of the seat 2, and the drum 111a is driven with a rotational force in both rotational directions. This is because it comes to be. Since the rotary damper 8 can provide a buffering action against the rotation of the drum 111a in both directions, the movement of the wire 130a is buffered by receiving a load in both directions, and the sliding movement of the seat 2 is also buffered in both directions. Further, since the wire 130a is formed in an annular shape via the drum 111a, the slack associated with the movement of the seat 2 does not occur, so that the constant load spring can be omitted.

  Although the description of the specific embodiment is finished as above, the present invention is not limited to the above embodiment and can be widely modified. The shapes of the pulley device and the drum device are exemplary, and can be changed as appropriate without departing from the spirit of the present invention.

It is a perspective view which disassembles and shows the slide type seat concerning a 1st embodiment. It is sectional drawing which shows the slide type seat which concerns on 1st Embodiment. It is a perspective view which decomposes | disassembles and shows the damper apparatus of the slide type seat which concerns on 1st Embodiment. It is sectional drawing which decomposes | disassembles and shows the damper apparatus of the slide type seat which concerns on the modification of 1st Embodiment. It is a perspective view which shows the slide type seat which concerns on 2nd Embodiment. It is a perspective view which decomposes | disassembles and shows the damper apparatus of the slide type seat which concerns on 2nd Embodiment. It is a perspective view which shows the slide type seat which concerns on the modification of 2nd Embodiment. It is a perspective view which decomposes | disassembles and shows the damper apparatus of the slide-type seat which concerns on the modification of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car floor part 2 Car seat 3 Slide rail 4 Damper apparatus 5 * 6 Pulley apparatus 7 Annular belt 8 Rotary damper 9 Assist spring 11 Rail groove 12 Damper groove 13 Recess 31 Lower rail 32 Upper rail 51/57/61 Pully 52 / 62 Rotating shaft 100 Damper device 110 / 110a Drum device 111 / 111a Drum 121 Constant load spring 116 / 116a / 116b Wire winding groove 117 Spring winding groove 118 Bush 130 / 130a Wire

Claims (6)

An on-vehicle seat damper device for buffering movement at the time of sliding movement of a seat slidably provided with respect to a vehicle compartment floor portion,
A rotating member rotatably supported on one of the vehicle compartment floor and the seat;
A connecting member that is fixed to the other of the vehicle compartment floor and the seat, moves by sliding the seat, and rotates the rotating member;
An on-vehicle seat damper device comprising: a rotary damper that is drivingly connected to a rotating shaft of the rotating member and attenuates a rotating operation of the rotating member.   The on-vehicle seat damper device according to claim 1, wherein the rotary damper is drivingly connected to the rotating member via a one-way clutch.   The on-vehicle seat damper device according to claim 1, wherein the rotary damper is a rotary damper that exhibits a buffering action only in one direction of rotation. The connecting member is a belt;
The on-vehicle seat damper device according to any one of claims 1 to 3, wherein the rotating member is a pulley around which the belt is stretched. The connecting member is a wire;
The on-vehicle seat damper device according to any one of claims 1 to 3, wherein the rotating member is a winding drum to which one end of the wire is fixed. A sliding seat provided with the on-vehicle seat damper device according to claim 1,
The seat is slidable in the vehicle front-rear direction with respect to the vehicle compartment floor,
Biasing means for biasing the seat forward in the vehicle longitudinal direction;
The damper device cushions at least the rearward movement of the seat in the longitudinal direction of the vehicle body.

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