JP2015063212A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize a space between a seat cushion and a floor in a slide rail mechanism capable of adjusting a seating position of a seat body in the front-back direction with respect to a vehicle constitution member such as a floor surface of the vehicle by electric drive.SOLUTION: A vehicular seat includes a slide rail 11 and a shaft 260 which is internally arranged in the slide rail 11 to regulate slide movement of the slide rail 11. The shaft 260 has a drive mechanism 262 consisting of a hollow motor 264 and a third screw shaft 293 (shaft member), the hollow motor 264 is fixed to an upper rail of the slide rail 11 and the third screw shaft 293 is fixed to a lower rail 14. Relative positions of the hollow motor 264 and the third screw shaft 293 in the longitudinal direction of the slide rail 11 are displaced by drive of the drive mechanism 262, and thereby the slide movement of the seat body can be adjusted.

Description

  The present invention relates to a vehicle seat.

  Conventionally, a slide rail that makes it possible to adjust the seating position of the seat body in the front-rear direction with respect to a vehicle component such as a vehicle floor, and a shaft that is built in the slide rail and that can regulate the sliding movement of the slide rail, A vehicle seat is known (for example, Patent Document 1). In the vehicle seat disclosed in Patent Document 1, a shaft is disposed in a slide rail so as to be rotatable around an axis along a longitudinal direction. The output from the motor as a reduction in electric drive is transmitted to the shaft while decelerating via a gear disposed in a gear box as a speed reduction mechanism, so that the seat cushion side with respect to the lower rail on the floor side Slide the upper rail.

JP 2005-96522 A

  However, the gear box in Patent Document 1 is disposed so as to be exposed from one rail end portion of the lower rail or the upper rail. The motor that transmits the drive to the gear box is disposed below the seat cushion and in the center in the width direction, and distributes and transmits the drive to the left and right slide rail shafts via separate gears. It is. In the above configuration, the shaft rotates around the axis, but there is also a mode in which the shaft is fixed and moved back and forth while driving a motor disposed on the seat body side. Therefore, there is a concern that the space between the seat cushion and the floor cannot be effectively used in any form.

  The present invention was devised in view of the above points, and the problem to be solved by the present invention is that the seating position in the front-rear direction with respect to a vehicle constituent member such as a floor surface of the vehicle is set by electrically driving the seat body. An object of the present invention is to provide a vehicle seat that can effectively use a space between a seat cushion and a floor in a slide rail mechanism that can be adjusted.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
A first invention is a slide rail that allows a seat body to be adjusted in a front-rear seating position with respect to a vehicle component such as a vehicle floor, and a slide rail that is housed in the slide rail and restricts sliding movement of the slide rail. A vehicle seat having a drive shaft, the shaft having a drive mechanism including a hollow motor housed in the slide rail and a shaft member directly screwed into the hollow motor. The slide rail includes a lower rail and an upper rail supported by the lower rail so as to be slidable. The hollow motor is fixed to one of the lower rail and the upper rail, and the shaft is fixed to the other. The member is fixed, and the drive of the drive mechanism causes the slide motor relative to the shaft member to move in the longitudinal direction of the slide rail. Location is characterized in that the seat body by displacement can be adjusted seating position in the longitudinal direction relative to the vehicle component, such as a floor of the vehicle.

  According to the first aspect, since the hollow motor and the shaft member are housed in the slide rail, the configuration is compact, and the space between the seat cushion and the floor can be used effectively. Moreover, space saving can be achieved. In addition, since the drive mechanism is composed of a hollow motor and a shaft member, the number of components can be reduced as compared with the conventional electric slide structure, and the weight can be reduced.

  Next, in the vehicle seat according to the second aspect of the present invention, in the first aspect, the seat body is movable below the slide rail in a vertical direction relative to a vehicle component such as a floor surface of the vehicle. It has the link mechanism which performs.

  According to the second aspect of the invention, the slide rail can be provided with a link mechanism below the slide rail by making the structure compact and reducing the weight. As a result, the slide rail can be brought closer to the seat back 2, so that the moment arm when the impact load is applied can be shortened. Further, since the slide rail can be slid without including the link mechanism, the electric efficiency is improved, so that it is possible to avoid the use of a motor having a larger output than necessary. Further, since the slide rail is not disposed on the floor surface of the vehicle, the vehicle floor can be cleaned. Therefore, the space between the seat cushion and the floor can be more effectively used. In addition, space saving can be achieved. Further, since the connection between the vehicle floor and the vehicle seat is a connection between the link mechanism and the vehicle floor, complicated detachment is not required. Therefore, the vehicle seat can be easily replaced.

  Next, a vehicle seat according to a third invention is characterized in that, in the first invention or the second invention, the hollow motor is fixed via an elastic body.

  According to the third aspect of the invention, the hollow motor is configured to be fixed via the elastic body. Thus, the hollow motor has a configuration in which vibration is absorbed by the elastic body, and can improve reliability.

  The present invention provides a slide rail mechanism that allows the seat body to be adjusted in the front-rear direction with respect to a vehicle component such as a vehicle floor surface by means of electric drive. It is possible to provide a vehicle seat that can effectively use the space.

1 is a perspective view of a vehicle seat according to an embodiment of the present invention. 1 is a side view of a vehicle seat according to an embodiment of the present invention. 1 is a front view of a vehicle seat according to an embodiment of the present invention. It is sectional drawing of the direction along the longitudinal direction of the lifter mechanism of the vehicle seat which concerns on embodiment of this invention. It is the side view which showed the movement of the up-down direction of the seat main body by the action | operation of the lifter mechanism of the vehicle seat which concerns on embodiment of this invention. It is sectional drawing of the direction along the longitudinal direction of the slide mechanism of the vehicle seat which concerns on embodiment of this invention. It is sectional drawing of the direction orthogonal to the longitudinal direction of the sliding mechanism of the vehicle seat which concerns on embodiment of this invention.

  Below, embodiment of the vehicle seat of this invention is described using FIGS. In the present embodiment, a seat on the front side of the vehicle seat among the vehicle seats will be described as an example. The directions indicated by appropriate arrows in the drawings are directions that coincide with the front, rear, upper, lower, outer, and inner sides of the vehicle to which the vehicle seat is applied. In addition, each figure demonstrates centering on the structure of the lifter mechanism of a vehicle seat, and a slide mechanism, in order to demonstrate the structure of embodiment easily, Description may be abbreviate | omitted about another site | part. For example, the seat back and the seat cushion are schematically illustrated with a skeleton as the center, and detailed illustration and description of the equipment such as the pad member and the skin are omitted.

[Overall configuration of vehicle seat (vehicle seat)]
The vehicle seat is disposed as a front seat of the vehicle as shown in FIGS. The vehicle seat includes front support brackets 31L and 31R, rear support brackets 32L and 32R, a first connection rod 35, and a second connection rod 36 (base portion) on a vehicle floor surface F (vehicle components such as a vehicle floor surface). ) Is arranged. The link mechanism 20 is disposed above the front support brackets 31L and 31R, the rear support brackets 32L and 32R, the first connection rod 35, and the second connection rod 36. The seat body 1 is disposed above the link mechanism 20.

  The seat body 1 is a seat on which a seated person sits in a vehicle as shown in FIGS. The seat body 1 mainly includes a seat back 2 as a backrest portion, a seat cushion 3 as a seating portion, and a slide mechanism 10. The seat back 2 has a back frame that forms a skeleton. Although not shown, the back frame is formed in a substantially rectangular frame shape by appropriately bending and drawing pipe members and plate members made of steel. The seat cushion 3 has a cushion frame that forms a skeleton. Although not shown, the cushion frame is formed in a substantially rectangular frame shape by appropriately bending and drawing pipe members and plate members made of steel. The seat body 1 is connected to the cushion frame by a reclining device provided at a lower portion in the width direction of the back frame. Accordingly, the seat back 2 is configured to be able to adjust the backrest angle with respect to the seat cushion 3 or to tilt forward with respect to the seat cushion 3. A lower part of the seat body 1 includes a slide mechanism 10 that enables adjustment of the seating position in the vehicle front-rear direction with respect to the floor surface F of the seat body 1. The slide mechanism 10 includes slide rails 11 and 11. The slide rails 11 and 11 are arranged in a pair of left and right in the seat width direction of the seat cushion 3 and in parallel in the vehicle front-rear direction. A third connecting rod 15 and a fourth connecting rod 16 are bridged between the slide rails 11 and 11. The slide rails 11 and 11 are provided with support plates 145L, 145R, 146L, and 146R from which the plate-like members protrude downward from the lower surface portions 141 and 141 (see FIG. 7) at the front and rear ends of the lower rails 14 and 14, respectively. At the approximate center of the support plates 145L, 145R, 146L, and 146R, a hole is formed through which the third connecting rod 15 and the fourth connecting rod 16 are pivotally supported. The third connecting rod 15 is inserted into the holes of the left and right support plates 145L and 145R at the front end of the lower rail 14, and is spanned so as to be rotatable around an axis. The fourth connecting rod 16 is inserted through the holes of the left and right support plates 146L and 146R at the rear end of the lower rail 14, and is spanned so as to be rotatable around an axis. Details of the slide mechanism 10 will be described later.

  As shown in FIGS. 1 to 3, front support brackets 31 </ b> L and 31 </ b> R and rear support brackets 32 </ b> L and 32 </ b> R that support the seat body 1 are seated on a vehicle floor surface F (a vehicle component such as a vehicle floor surface). The cushion 3 is disposed in the vicinity of substantially four corner positions. The front support brackets 31L and 31R are respectively disposed at positions spaced apart in the width direction in front of the seat cushion 3 on the floor surface F of the vehicle. The rear support brackets 32L and 32R are respectively disposed at positions spaced apart in the width direction on the floor surface F of the vehicle behind the seat cushion 3. The front support brackets 31L and 31R and the rear support brackets 32L and 32R are formed in a substantially U-shaped cross section by appropriately bending a steel plate member, and the wall portion 33 from the vehicle floor surface F toward the vehicle upper side. 34 protrudes. The wall portions 33 and 34 are formed with holes through which the pipe-like first connecting rod 35 and second connecting rod 36 made of steel are pivotally supported. The first connecting rod 35 is inserted through the hole portions of the left and right front support brackets 31L and 31R and is spanned so as to be rotatable around an axis. The second connecting rod 36 is inserted through the holes of the left and right rear support brackets 32L and 32R, and is spanned so as to be rotatable around an axis. Here, the front support brackets 31L and 31R, the rear support brackets 32L and 32R, the first connecting rod 35, and the second connecting rod 36 correspond to the “base” of the present embodiment as a configuration that supports the seat body 1. In the present embodiment, the front support brackets 31L and 31R and the rear support brackets 32L and 32R on the floor surface F of the vehicle are shown as bases. However, any structure that supports the seat body 1 may be used. Therefore, the above-described slide mechanism 10 is configured as a “base” configured to support the seat body 1 by being configured on a vehicle floor surface F (a vehicle component member such as a vehicle floor surface) in addition to the seat body 1. It may be done.

  The link mechanism 20 is rotated as shown in FIGS. 1 to 3 so that the seat body 1 serves as the above-mentioned base support brackets 31L and 31R, rear support brackets 32L and 32R, the first connecting rod 35, and the second. This is a mechanism that moves the connecting rod 36 (in other words, the floor surface F of the vehicle) in the vertical direction. The link mechanism 20 is provided between the slide mechanism 10 of the seat body 1 and the first connecting rod 35 and the second connecting rod 36 as the base. The link mechanism 20 includes a pipe-like lifter pipe 22 made of a steel material, front links 25L and 25R and rear links 26L and 26R made of a steel plate member. The front links 25 </ b> L and 25 </ b> R are integrally fixed to a first connecting rod 35 and a third connecting rod 15 disposed on the front side of the seat body 1. The rear links 26 </ b> L and 26 </ b> R are integrally fixed to the second connecting rod 36 and the fourth connecting rod 16 disposed on the rear side of the seat body 1. Thus, the front links 25L and 25R and the rear links 26L and 26R are rotatably attached to the front support brackets 31L and 31R and the rear support brackets 32L and 32R (base portions) and are also rotatably attached to the seat body 1. . Further, the lifter pipe 22 is bridged between the front links 25 </ b> L and 25 </ b> R at a position biased in the vicinity of the third connecting rod 15. The rotation of each link in the link mechanism 20 is performed by the operation of the lifter mechanism 50.

[Lifter mechanism 50]
The lifter mechanism 50 is mainly composed of a shaft 60 as shown in FIGS. As shown in FIGS. 1 and 2, one end of the shaft 60 is rotatably connected to a second connecting rod 36 as a base, and the other end is rotatably connected to the lifter pipe 22 of the link mechanism 20. . Various connection modes of the shaft 60 can be applied. That is, the shaft 60 may have a configuration in which one end is rotatably connected to the base and the other end is rotatably connected to the link mechanism or the seat body 1. Therefore, when the lifter pipe 22 is not configured in the link mechanism 20, the link mechanism 20 may be configured to be rotatably connected to the third connecting rod 15 in the seat body 1. Further, the shaft 60 may have a configuration in which one end is rotatably connected to the first connecting rod 35 as a base and the other end is rotatably connected to the fourth connecting rod 16 in the seat body 1. .

  As shown in FIGS. 1 to 3, the shaft 60 includes a hollow motor 64 as an electric drive source, and a first screw shaft 91 and a second screw shaft 92 are directly screwed to both ends of the hollow motor 64 in the longitudinal direction. The drive mechanism 62 is configured. The entire length of the shaft 60 is displaced by expanding and contracting by driving the drive mechanism 62. The link mechanism 50 is rotated by expansion and contraction of the shaft 60 so that the seat body 1 can move in the vertical direction with respect to the front support brackets 31L and 31R and the rear support brackets 32L and 32R (base portions).

  As shown in FIGS. 1 to 4, the hollow motor 64 is roughly composed of an outer cylinder 70 having a hollow cylindrical shape as a stator (stator), and an inner cylinder 80 having a hollow cylindrical shape as a rotor (rotor). And have. The hollow motor can be applied to either a brush motor or a brushless motor. The hollow motor 64 has an outer cylinder 70 having a hollow cylindrical shape. A plate-like permanent magnet 73 formed in an arc shape along the inner peripheral surface of the outer cylinder is adjacent to the S and N poles alternately on the outer peripheral surface 72 which is the inner peripheral surface of the outer cylinder 70. It is arranged over the entire circumference. Both ends of the outer cylinder 70 are covered with a lid-like member, and a slit 74 through which the first screw shaft 91 and the second screw shaft 92 can slide in the longitudinal direction is formed in a substantially central portion. . An inner cylinder 80 having a hollow cylindrical shape is disposed concentrically with the outer cylinder 70 inside the outer cylinder 70 in the radial direction. An electromagnet 90 made of an armature coil is formed on the outer peripheral surface 87 of the inner cylinder, which is the outer peripheral surface of the inner cylinder 80. A bearing device 98 is disposed between both ends of the inner cylinder outer peripheral surface 87 of the inner cylinder 80 and both ends of the outer cylinder inner peripheral surface 72 of the outer cylinder 70. Thereby, the outer cylinder 70 and the inner cylinder 80 are arrange | positioned concentrically. The inner cylinder inner peripheral surface 82 that is the inner peripheral surface of the inner cylinder 80 is threaded with a screw that allows the first screw shaft 91 and the second screw shaft 92 to be screwed together. Here, the inner cylinder inner peripheral surface 82 is formed with a right-hand threaded portion 84 whose screw notch direction is rightward toward one end side with the center in the longitudinal direction as a boundary. Further, the inner cylinder inner peripheral surface 82 is formed with a left screw portion 86 in which the notch direction of the screw is opposite to the right screw portion 84 toward the other end side with the center in the longitudinal direction as a boundary. The first screw shaft 91 and the second screw shaft 92 are formed as metal columnar members. A right screw portion 94 is cut out on the outer peripheral surface of one end of the first screw shaft 91 corresponding to the right screw portion 84 of the inner peripheral surface 82 of the inner cylinder 80. The other end of the first screw shaft 91 constitutes a first connecting portion 91a (see FIG. 2) that is rotatably connected to the lifter pipe 22 of the link mechanism 20. On the outer peripheral surface of one end of the second screw shaft 92, a left screw portion 96 is cut out corresponding to the left screw portion 86 of the inner cylinder inner peripheral surface 82 of the inner cylinder 80. The other end of the second screw shaft 92 constitutes a second connecting portion 92a (see FIG. 2) that is rotatably connected to a second connecting rod 36 as a base portion. In this way, the shaft 60 is provided with a hollow motor as an intermediate portion located in the middle in the longitudinal direction, and the first screw shaft 91, the second screw as two side portions adjacent to both sides in the longitudinal direction with respect to the hollow motor (intermediate portion). The two screw shafts 92 are directly screwed together to constitute the drive mechanism 62. Further, the shaft 60 is configured at an intermediate position in the width direction of the seat body 1. In the present embodiment, a configuration is adopted in which the first screw shaft 91 and the second screw shaft 92 as the two side portions extend and contract by overlapping with the hollow motor as the intermediate portion in the longitudinal direction. It is not restricted to this, What is necessary is just a structure which expands-contracts when either one of two side parts or an intermediate | middle part overlaps with a longitudinal direction with respect to the other. Therefore, the structure which expands-contracts may be sufficient as an intermediate part overlaps with a longitudinal direction with respect to a side part. In this case, the electric drive source in the intermediate portion may not be a hollow motor. The hollow motor 64 may have a configuration in which the stator and the rotor are reversed. That is, the outer cylinder 70 may be a rotor and the stator may be an inner cylinder 80. The inner cylinder 80, the first screw shaft 91, and the second screw shaft 92 may be configured so that the screw notch directions are reversed. That is, the first screw shaft 91 side may have a left-handed configuration, and the second screw shaft 92 side may have a right-handed configuration.

  The operation of the lifter mechanism 50 in the vehicle seat will be described. As shown in FIGS. 1, 4 and 5, the hollow motor 64 in the drive mechanism 62 of the shaft 60 is driven by receiving power supply. The hollow motor 64 is driven by rotating the inner cylinder 80 around the axis with respect to the outer cylinder 70. Then, the first screw shaft 91 and the second screw shaft 92 at both ends approach or separate from each other as the inner cylinder 80 is screwed. Thereby, the full length of the shaft 60 is displaced by expanding and contracting. When the entire length of the shaft 60 is displaced, the front links 25L and 25R and the rear links 26L and 26R of the link mechanism 20 are rotated in either the vehicle front-rear direction. As a result, the seat body 1 moves in the vertical direction with respect to the front support brackets 31L and 31R and the rear support brackets 32L and 32R, the first connection rod 35 and the second connection rod 36 (in other words, the floor surface F of the vehicle). It becomes the composition to do.

[Slide mechanism 10]
The slide rail 11 is disposed between the seat body 1 and the link mechanism 20 as shown in FIGS. 1 to 3 and 6 and moves the seating position of the seat body 1 with respect to the floor surface F in the vehicle front-rear direction. is there. The slide rail 11 mainly includes the lower rail 14, the upper rail 12, the shaft 260, and the rolling elements 13. The lower rail 14 is formed in a shape extending in the vehicle front-rear direction, and is disposed on the floor surface F. The upper rails 12 are disposed on the seat body 1 side, and are fitted into the lower rails 14 so as to be slidable in the rail longitudinal direction. Specifically, the lower rail 14 and the upper rail 12 are configured in a cylindrical shape by overlapping via the rolling elements 13. As a result, the upper rail 12 is adapted to move the seating position of the seat body 1 in the vehicle front-rear direction as it is guided to be slidable in the vehicle front-rear direction relative to the lower rail 14.

  As shown in FIGS. 1 and 2, the lower rail 14 is formed in a shape extending in the vehicle front-rear direction, and is disposed on the link mechanism 20 side. As shown in FIG. 7, the lower rail 14 is integrally formed in the following cross-sectional shape by bending a single flat plate member made of a steel material in some places. Specifically, it has a flat plate-like lower surface portion 141 facing the floor surface F. The lower surface portion 141 includes a flat plate-shaped right side surface portion 142R and a left side surface portion 142L that rise from both ends of the lower surface portion 141. The right side surface portion 142R and the left side surface portion 142L have a flat plate-shaped right upper surface portion 143R and a left upper surface portion 143L that are folded inward from the upper ends thereof. The right upper surface portion 143R and the left upper surface portion 143L have a flat plate-shaped right tip portion 144R and a left tip portion 144L that hang straight from the inner end thereof.

  As shown in FIGS. 1 and 2, the upper rail 12 is disposed on the seat body 1 side, and is fitted to the lower rail 14 so as to be slidable in the rail longitudinal direction. As shown in FIG. 7, the upper rail 12 is integrally formed in the following cross-sectional shape by bending a flat plate member made of a steel material in some places. Specifically, the upper surface portion 121 has a flat plate shape substantially parallel to the floor surface F. The upper surface portion 121 has a flat plate-shaped right side surface portion 122R and a left side surface portion 122L that hang straight from both ends of the upper surface portion 121. The right side surface portion 122R and the left side surface portion 122L have a right turning surface portion 123R and a left turning surface portion 123L that are bent outwardly from the lower ends thereof. The right turn surface portion 123R and the left turn surface portion 123L have a right tip portion 124R and a left tip portion 124L that rise in a bent shape from the outer end portions thereof.

  As shown in FIGS. 1 to 3 and 6, the shaft 260 is built in the slide rails 11 and 11 and restricts the sliding movement of the slide rails 11 and 11. The shaft 260 includes a hollow motor 264 as an electric drive source, and constitutes a drive mechanism 262 in which a third screw shaft 293 (shaft member) is directly screwed onto the inner periphery of the hollow motor 264. The basic configuration of the hollow motor 264 is the same as that of the hollow motor 64 described above, but the formation of the screw portion 284 of the inner cylinder inner peripheral surface 282 of the inner cylinder 280 is different. The threaded portion 284 is formed in a spiral notch in the same direction on the entire axial direction of the inner peripheral surface 282 of the inner cylinder. Further, a threaded portion 294 is formed in the outer peripheral surface of the third screw shaft 293 so as to correspond to the threaded portion 284 of the inner cylindrical inner peripheral surface 282. The hollow motor 264 of the shaft 260 is fixed to the upper surface portion 121 of the upper rail 12 of the slide rail 11. Here, when the hollow motor 264 is fixed to the upper surface portion 121 of the upper rail 12, the hollow motor 264 is fixed via an elastic body 295 made of rubber, soft resin material or the like. Accordingly, the hollow motor 264 is fixed in a configuration in which vibration is absorbed by the elastic body 295 (anti-vibration fixing). The third screw shaft 293 of the shaft 260 is fixed to the lower surface portion 141 of the lower rail 14 and is disposed in the slide rail 11 along the longitudinal direction. The hollow motor 264 of the shaft 260 and the third screw shaft 293 are fixed in such a manner that the hollow motor 264 is fixed to one of the upper rail 12 and the lower rail 14 and the third screw shaft 293 is fixed to the other. That's fine. Therefore, the reverse fixing method of the above aspect can also be applied.

  The operation of the slide mechanism 10 in the vehicle seat will be described. The shaft 260 is driven when the hollow motor 264 in the drive mechanism 262 is supplied with electric power as shown in FIGS. 1 to 3 and 6 so that the hollow motor 264 and the third screw shaft 293 are relatively connected to the slide rail 11. The longitudinal position is displaced. The slide mechanism 10 is configured such that the upper rail 12 is guided so as to be slidable in the vehicle front-rear direction with respect to the lower rail 14 by the relative displacement of the position of the hollow motor 264 and the third screw shaft 293 in the longitudinal direction. Is moved in the vehicle front-rear direction. Here, the shaft 260 is provided on each of the slide rails 11, 11 of the slide mechanism 10, and an encoder (not shown), a control means (not shown), and the like are provided. Thereby, the operation of the slide mechanism 10 is performed in synchronization with the slide movement of the left and right slide rails 11 and 11 by the control means controlling the rotation of the hollow motor 264 based on the slide position information from the encoder.

  Thus, according to the vehicle seat of the embodiment, the shaft 60 is driven by the drive mechanism 62 so that the two first screw shafts 91, the second screw shafts 92 (side portions), or the hollow motor 64 (intermediate portion). Either one of them overlaps the other in the longitudinal direction, so that both ends of the shaft 60 move in the longitudinal direction and the entire length is displaced (expands / contracts). Therefore, since the shaft 60 is more efficient than a configuration in which the entire length is displaced by extending and contracting only one end, the power consumption of the hollow motor 64 that is an electric drive source can be suppressed. The shaft 60 is driven by a hollow motor 64 as an electric drive source, and the hollow motor 64 is provided at an intermediate portion so as to be longitudinally connected to the two first screw shafts 91 and the second screw shaft 92 (side portions). It is the structure screwed together. Therefore, the number of meshing portions is reduced as compared with a mechanism in which many gears mesh with each other as in the conventional drive mechanism 62, so that the configuration of the shaft 60 can be simplified by suppressing an increase in the number of components. Further, since many gears are not engaged with each other as in the conventional drive mechanism 62, it is possible to reduce the noise during the engagement of the gears. The shaft 60 is configured at an intermediate position in the width direction of the seat body 1. Thereby, the load at the time of moving the sheet | seat main body 1 to an up-down direction can suppress the deviation in a sheet | seat width direction.

  Further, since the hollow motor 264 and the third screw shaft 293 are housed in the slide mechanism 10, the configuration becomes compact, and the space between the seat cushion 3 and the vehicle floor surface F can be used effectively. Further, space saving in the passenger compartment can be achieved. Further, since the drive mechanism 262 in the slide mechanism 10 has an electric slide configuration with the configuration of the hollow motor 264 and the third screw shaft 293, the number of components can be reduced compared to the conventional electric slide configuration, and the weight can be reduced. Can do. Further, the slide mechanism 10 can be provided with the link mechanism 20 below the slide mechanism 10 by making the configuration compact and lightweight (in other words, with the seat body 1 and It can be disposed between the link mechanisms 20). As a result, the slide mechanism can be brought closer to the seat back 2, so that the moment arm when the impact load is applied can be shortened. Moreover, since it can be slid without including the link mechanism at the time of sliding, it is possible to avoid using a motor having a larger output than necessary because electric efficiency is improved. In addition, since the slide mechanism 10 is not disposed on the floor surface F of the vehicle, it is possible to clean the floor F of the vehicle. Therefore, the space between the seat cushion 3 and the vehicle floor surface F can be more effectively utilized. In addition, the vehicle compartment space can be improved. Further, since the connection between the vehicle floor F and the vehicle seat is the connection between the link mechanism 20 and the front support brackets 31L and 31R and the rear support brackets 32L and 32R, complicated detachment is unnecessary. Therefore, replacement of the vehicle seat is facilitated. The hollow motor is configured to be fixed via an elastic body. Thus, the hollow motor has a configuration in which vibration is absorbed by the elastic body, and can improve reliability.

  As mentioned above, although embodiment of this invention was described, the vehicle seat of this invention is not limited to embodiment, It can implement with other various forms.

DESCRIPTION OF SYMBOLS 1 Seat main body 2 Seat back 3 Seat cushion 10 Slide mechanism 11, 11 Slide rail 12 Upper rail 121 Upper surface part 122L Left side surface part 122R Right side surface part 123L Left return surface part 123R Right return surface part 124L Left front end part 124R Right front end part 13 Rolling elements 14, 14 Lower rail 141 Lower surface portion 142L Left side surface portion 142R Right side surface portion 143L Left upper surface portion 143R Right upper surface portion 144L Left front end portion 144R Right front end portion 145R, 145L, 146R, 146L Support plate 15 Third connecting rod 16 Fourth connecting rod 20 Link mechanism 22 Lifter pipe 25L , 25R Front link 26L, 26R Rear link 31L, 31R Front support bracket (base)
32L, 32R Rear support bracket (base)
33, 34 Wall 35 First connecting rod (base)
36 Second connecting rod (base)
50 Lifter mechanism 60 Shaft 62 Drive mechanism 64 Hollow motor 70 Outer cylinder 72 Outer cylinder inner peripheral surface 73 Permanent magnet 74 Slit 80 Inner cylinder 82 Inner cylinder inner peripheral surface 84 Right screw part 86 Left screw part 87 Inner cylinder outer peripheral surface 90 Electromagnet 91 1st screw shaft 91a 1st connection part 92 2nd screw shaft 92a 2nd connection part 94 Right screw part 96 Left screw part 98 Bearing apparatus 260 Shaft 262 Drive mechanism 264 Hollow motor 280 Inner cylinder 282 Inner cylinder inner peripheral surface 284 Thread part 293 Third screw shaft (shaft member)
294 Screw part 295 Elastic body F Vehicle floor (vehicle component such as vehicle floor)

Claims (3)

A slide rail that enables adjustment of a seating position in a front-rear direction with respect to a vehicle component such as a floor surface of the vehicle, and a shaft that is built in the slide rail and that can restrict sliding movement of the slide rail. A vehicle seat,
The shaft has a drive mechanism comprising a hollow motor housed in the slide rail and a shaft member screwed directly into the hollow motor,
The slide rail includes a lower rail and an upper rail supported to be slidable on the lower rail,
The hollow motor is fixed to one of the lower rail and the upper rail, and the shaft member is fixed to the other,
The longitudinal position of the slide rail relative to the hollow motor and the shaft member is displaced by the drive of the drive mechanism, so that the seat body is seated in the front-rear direction with respect to a vehicle component such as a vehicle floor surface. The vehicle seat is characterized by being adjustable. The vehicle seat according to claim 1,
A vehicle seat having a link mechanism that allows the seat body to move in a vertical direction relative to a vehicle component such as a floor surface of the vehicle, below the slide rail. The vehicle seat according to claim 1 or 2, wherein
The vehicle seat, wherein the hollow motor is fixed through an elastic body.

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