JP7166059B2 - vehicle seat - Google Patents

Description

The technology disclosed in this specification relates to a vehicle seat.

2. Description of the Related Art A seat slide device that slides a seat in the front-rear direction on the floor of a vehicle is known. The seat slide device includes a lower rail fixed to the floor of the vehicle, and an upper rail fixed to the seat cushion and engaged with the lower rail so as to be slidable in the front-rear direction. In the seat slide device of Patent Document 1, the sliding resistance of the upper rails when the upper rails are unlocked and the seat is moved forward is made larger than the sliding resistance when the seat is moved rearward. This seat slide device provides moderate sliding resistance during forward movement and small sliding resistance during rearward movement, thereby enhancing safety during forward movement and realizing easy rearward movement.

WO2016/009495

The seat slide device of Patent Document 1 sets the sliding resistance at the time of forward movement of the seat to an appropriate value in order to ensure the safety of the occupant. On the other hand, when no occupant is seated, it is desirable to be able to move the seat forward with less force. In addition, it is preferable that a simple operation can be used to separate the application of moderate sliding resistance with unlocking of the upper rail and the application of small sliding resistance with unlocking of the upper rail.

A vehicle seat disclosed in this specification includes a seat cushion, a lower rail, an upper rail, a slide lock mechanism, and a handle for releasing the slide lock mechanism. When the handle is moved from the lock position to the first unlock position, the slide lock mechanism is released and the first slide resistance is set as the slide resistance for forward movement of the upper rail. When the handle is moved from the first unlocked position to the second unlocked position, the sliding resistance is set to a low sliding resistance that is smaller than the first sliding resistance. In this vehicle seat, by selecting the movement position of the handle, it is possible to select between unlocking and applying moderate sliding resistance and unlocking and applying small sliding resistance.

In the seat disclosed in this specification, it is preferable that, in the first unlocked position, a second sliding resistance that is smaller than the first sliding resistance is set as a sliding resistance for rearward movement of the upper rail. By setting an appropriate value for the first sliding resistance, it is possible to increase the safety during forward movement while facilitating rearward movement of the seat.

The seat disclosed herein may further include a seat back rotatably supported with respect to the seat cushion, and a seat lock mechanism for locking the seat cushion and seat back in a seating ready position. In this case, when the handle is moved from the locked position to the first unlocked position, the slide lock mechanism is released while the seat lock mechanism is held in the locked state, and the handle is moved from the first unlocked position to the second unlocked position. When the slide lock mechanism is released, the seat lock mechanism may be released. In the second unlocked position, a low sliding resistance is set for forward movement and the seat back can be folded. This configuration is suitable for the second seat of a vehicle with three rows of seats.

An example of the mechanism for setting the first sliding resistance and the low sliding resistance according to the steering wheel operation is as follows. The mechanism is composed of a first wedge member, a second wedge member, a first interlocking mechanism, and a second interlocking mechanism. The first wedge member is held by the upper rail, tapered toward the front of the vehicle, and sandwiched between the lower rail and the upper rail. The second wedge member is held by the upper rail, tapered toward the rear of the vehicle, and sandwiched between the lower rail and the upper rail. The first interlocking mechanism moves the first wedge member rearward of the vehicle when the handle is moved from the locked position to the first unlocked position. Then, the first wedge member is separated from the lower rail, and the sliding resistance is reduced. The second interlocking mechanism moves the second wedge member forward of the vehicle when the handle is moved from the first unlocked position to the second unlocked position. As a result, the second wedge member is separated from the lower rail and sliding resistance is reduced. With the first wedge member separated from the lower rail and the second wedge member in contact with the lower rail, the above-described first sliding resistance and second sliding resistance are realized. When both the first wedge member and the second wedge member are separated from the lower rail, the above-described low sliding resistance is achieved.

The seat described above can switch between the first sliding resistance and the low sliding resistance at the moving position of one handle. The seat disclosed herein may have two handles. That is, the seat disclosed in the present specification includes, instead of the handle, a first handle for releasing the slide lock mechanism and setting a first sliding resistance to the sliding resistance when the upper rail moves forward, and a slide lock. A second handle may be provided that releases the mechanism and sets the sliding resistance to a low sliding resistance that is less than the first resistance value. The user can select either the first sliding resistance state or the low resistance state by selecting the handle to operate.

The first handle is configured to release the slide lock mechanism and set a second sliding resistance, which is lower than the first sliding resistance and equal to or lower than the low sliding resistance, as a sliding resistance when the upper rail moves backward. may be Alternatively, the second handle may be configured to release the slide lock mechanism and the seat lock mechanism.

Details and further improvements of the technique disclosed in this specification are described in the following "Mode for Carrying Out the Invention".

FIG. 2 is a side view and a plan view showing the internal structure of the seat slide device in the seat of the first embodiment; FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1(a); 1 is a diagram showing the mechanism of a seat (1); FIG. It is a diagram showing the mechanism of the seat (2). 5(a) is a cross-sectional view taken along line VV of FIG. 3, and FIG. 5(b) is a cross-sectional view taken along line VV of FIG. (3) which shows the mechanism of the seat. It is a figure explaining the interlocking mechanism of a steering wheel and an unlocking lever (1). It is a figure explaining the interlocking mechanism of a handle|steering-wheel and an unlocking lever (2). It is a figure explaining the interlocking mechanism of a handle|steering-wheel and an unlocking lever (3). It is a figure explaining the interlocking mechanism of a modification (1). It is a figure explaining the interlocking mechanism of a modification (2). It is a figure explaining the interlocking mechanism of a modification (3). It is a figure explaining the interlocking mechanism of the handle|steering-wheel and unlocking lever in 2nd Example. FIG. 5 is a diagram schematically showing the internal structure of a seat slide device of a first modified example; FIG. 11 is a diagram schematically showing the internal structure of a seat slide device of a second modified example; FIG. 11 is a diagram schematically showing the internal structure of a seat slide device of a third modified example; FIG. 11 is a diagram schematically showing the internal structure of a seat slide device of a third modified example; FIG. 11 is a diagram schematically showing the internal structure of a seat slide device of a third modified example; FIG. 11 is a diagram schematically showing the internal structure of a seat slide device of a fourth modified example; It is a perspective view which shows the shape of a 1st slider and a 2nd slider. FIG. 4 is an exploded view showing structures of a first slider and a second slider; It is a perspective view which shows the shape of a 2nd slider. It is a figure for demonstrating the operation|movement of a 1st slider and a 2nd slider. It is a figure for demonstrating the operation|movement of a 1st slider and a 2nd slider. It is a figure which shows the shape of the 1st slider of the sheet|seat slide apparatus which concerns on a 5th modification, and a 2nd slider.

(First embodiment) A sheet of a first embodiment will be described with reference to the drawings. First, a mechanism for differentiating sliding resistance when sliding the seat forward and sliding resistance when sliding the seat backward will be described.

FIG. 1(a) is a side view schematically showing the structure of a seat slide device 100 for sliding a seat in the longitudinal direction, and FIG. 1(b) is a plan view thereof. The seat slide device 100 is provided between a vehicle floor and a seat (neither of which is shown), and supports the seat so as to be slidable in the longitudinal direction. In this embodiment, it is assumed that the pair of seat slide devices 100 are installed in the second row seats of a vehicle having three rows of seats, that is, a passenger car.

In FIGS. 1(a) and 1(b), the x-axis is set with the direction from the rear side to the front side of the vehicle as the x-direction. Also, the y-axis is set with the direction from the right side to the left side of the vehicle as the y direction. Furthermore, the z-axis is set with the direction from the lower side to the upper side of the vehicle as the z-direction. In the drawings after FIG. 1, the x-axis, y-axis and z-axis are similarly set. Therefore, the longitudinal direction of the vehicle is the ±x direction, the width direction of the vehicle is the ±y direction, and the height direction of the vehicle is the ±z direction.

The seat includes a seat cushion on which a user of the vehicle sits, a seatback that forms the backrest of the user, and a headrest that supports the head of the user. The seat back can swing over a predetermined swing angle with respect to the seat cushion around a swing axis parallel to the y-axis. Generally, when the second row seat is slid toward the front of the vehicle in order to secure an entrance to the third row seat, for example, the seat back is folded with respect to the seat cushion around the pivot axis. to establish a folded posture.

The seat slide device 100 has lower rails 1 and upper rails 2 . The lower rail 1 is a member fixed to the floor of the vehicle. The upper rail 2 is a member fixed to the bottom surface of the vehicle seat. Two sets of lower rails 1 and upper rails 2 fixed to one seat are arranged in parallel along the left-right direction of the vehicle with their longitudinal directions extending along the front-rear direction of the vehicle. The upper rail 2 is slidably supported on the lower rail 1 along the x-axis.

2(a) and 2(b) are enlarged cross-sectional views taken along line II--II in FIG. 1(a). FIG. 2(a) is a diagram showing a slide lock state, which will be described later, and FIG. 2(b) is a diagram showing a slide lock released state, which will be described later. The following description will be made with reference to FIGS. 2(a) and 2(b). The lower rail 1 is formed by bending a single metal plate. The lower rail 1 includes a bottom plate portion 3, side plate portions 4, 4 extending upward from both ends of the bottom plate portion 3, respectively, an upper plate portion 5 extending inward from the upper ends of the side plate portions 4, 4, respectively, 5 and mouth plate portions 6, 6 extending downward from inner ends of the upper plate portions 5, 5, respectively.

As is clear from FIGS. 2(a) and 2(b), the bottom plate portion 3 faces the upper plate portions 5, 5, and the side plate portions 4, 4 face the mouth plate portions 6, 6, respectively. there is The mouth plate portions 6, 6 are arranged apart from each other. A gap is formed between the lower ends of the mouth plate portions 6 and 6 and the bottom plate portion 3 . For example, a plurality of rectangular openings 7 are formed in the mouth plate portion 6 . As shown in FIG. 1(a), the apertures 7 are arranged in a row along the x-axis.

Of the space formed inside the lower rail 1 , the space surrounded by the bottom plate portion 3 , the side plate portion 4 , the upper plate portion 5 , and the mouth plate portion 6 constitutes an accommodation space 8 for the upper rail 2 . The accommodation space 8 is opened upward between the mouth plate portions 6,6. A portion of the upper rail 2, ie, the lower portion, is accommodated in the accommodation space 8, and the portion of the upper rail 2, ie, the upper portion, protrudes upward from a portion of the lower rail 1 that is opened upward.

The upper rail 2 has a pair of metal plates 9, 9 superimposed on each other. The metal plate 9 includes a pair of side plate portions 10, 10 arranged in the housing space 8 and facing the mouth plate portion 6 of the lower rail 1, and a metal plate 9 bent from the side plate portion 10 to face the side plate portion 4 and the mouth plate portion 6. A pair of arm plate portions 11, 11 are provided. That is, the pair of arm plate portions 11, 11 are portions formed so as to bend from the lower side of the side plate portion 10 and extend vertically upward.

Of the pair of side plate portions 10, 10, the side plate portion 10 arranged on the y-direction side is formed with, for example, a plurality of rectangular openings 10a. Similarly, of the pair of arm plate portions 11, 11, the arm plate portion 11 arranged on the y-direction side is formed with, for example, a plurality of rectangular openings 11a. The shape and arrangement interval of the openings 10a and 11a are the same as the shape and arrangement interval of the opening 7 described above.

A roller 12 is rotatably supported on the arm plate portion 11 . The roller 12 is arranged on the upper surface of the bottom plate portion 3 of the lower rail 1, and supports the upper rail 2 so as to be slidable in the direction along the x-axis (that is, the longitudinal direction of the vehicle). As shown in FIGS. 1A and 1B, two rollers 12, 12 are arranged in the x direction on the arm plate portion 11 on the y direction side. On the other hand, one roller 12 is arranged at the center position in the x direction on the arm plate portion 11 on the -y direction side.

The seat slide device 100 has a locked state (FIG. 2A) in which movement of the upper rails 2 along the x-axis is restricted, and an unlocked state (FIG. 2A) in which movement of the upper rails 2 along the x-axis is permitted. It has a slide lock mechanism 13 for switching between b)) and . The slide lock mechanism 13 has a lock member 14 . The locking member 14 is made of a bent metal plate. The lock member 14 is attached via a bracket 15 to one of the pair of metal plates 9, 9 arranged on the y-direction side. The bracket 15 rotatably supports the locking member 14 with a rotating shaft 16 parallel to the x-axis.

The lock member 14 has a claw portion 14a and an operating portion 14b. A plurality of claws 14 a are formed at the end of the lock member 14 . Each claw portion 14a is formed in a strip shape and arranged in a row along the x-axis. Moreover, the width (dimension in the x direction) of each claw portion 14a is such that it can be inserted through each of the opening 10a, the opening 7, and the opening 11a. Furthermore, the arrangement interval of the claw portions 14a is equal to the arrangement interval of the openings 10a and the like. As shown in FIG. 2(a), the locked state is a state in which each claw portion 14a penetrates the opening 10a, the opening 7, and the opening 11a. This restricts the sliding movement of the upper rail 2 with respect to the lower rail 1 (that is, movement along the x-axis).

The operation portion 14b is a portion of the lock member 14 formed at the end portion of the lock member 14 on the opposite side of the rotating shaft 16 from the claw portion 14a. A push-down pin 51 of a slide unlock lever 50 interlocking with the movement of a handle 212 (described later) operated by the user is engaged with the operation portion 14b. 1(b) and 2, only the tip of the push-down pin 51 is shown. The entire slide unlock lever 50 will be described later. When the user pulls up the handle 212 from the locked state shown in FIG. 2A, the push-down pin 51 is lowered to push down the operation portion 14b. The lock member 14 rotates around the rotation shaft 16, and the claw portions 14a are pulled out from the openings 10a, 7, and 11a, ie, the unlocked state shown in FIG. 2(b). In the unlocked state, the upper rail 2 is freed from sliding movement with respect to the lower rail 1, and the upper rail 2 can move along the x-axis. That is, the slide lock mechanism 13 is released.

As shown in FIGS. 1A and 1B, one end of a coil spring 18 is connected to the lock member 14 in the vicinity of the operating portion 14b. The other end of the coil spring 18 is connected to the vicinity of the end of the upper rail 2 in the z direction. The elastic restoring force of the coil spring 18 biases the operating portion 14b in the z direction. Therefore, when the user does not operate the handle 212, the claws 14a pass through the openings 10a, 7, and 11a, that is, the locked state shown in FIG. 2(a) is maintained.

3 and 4 are diagrams schematically showing the internal structure of the seat slide device 100 of the seat 200. FIG. 3 and 4, the seat cushion 210 and the seat back 220 of the seat 200 are shown in phantom lines. Upper rail 2 is fixed under seat cushion 210 . Seat cushion 210 and seat back 220 are connected by hinge 230 so as to be rotatable around the y-axis. Inside the hinge 230, a seat lock mechanism 231 is incorporated that locks the seat cushion 210 and the seat back 220 in a sitting posture in which the user can sit. Since the seat lock mechanism 231 is a conventional technology, a detailed explanation of the mechanism is omitted. When the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released. When the seat lock mechanism 231 is released, the seat back 220 can rotate about the y-axis with respect to the seat cushion 210 with the hinge 230 as the rotation axis. The seat back 220 is folded over the seat cushion 210 when there is nothing obstructing the seat cushion 210 .

3 and 4 also depict the previously mentioned handle 212 and slide unlock lever 50. FIG. The slide unlock lever 50 and seat unlock lever 60 are interlocked with the movement of the handle 212 . The handle 212 , the slide unlock lever 50 and the seat unlock lever 60 are connected by a cable, and the slide unlock lever 50 and the seat unlock lever 60 move in conjunction with the movement of the handle 212 . In FIGS. 3 and 4, illustration of a cable connecting the handle 212, the slide unlock lever 50, and the seat unlock lever 60 is omitted. An interlocking mechanism for the handle 212, the slide unlock lever 50, and the seat unlock lever 60 will be described later.

Returning to the description of the seat slide device 100 . 3 and 4, a part of the pair of metal plates 9, 9 arranged on the y-direction side and the y-direction side of the lower rail 1 (the side plate portion 4, the upper plate portion 5, a state in which a part of the mouth plate 6) is cut away is shown. FIG. 3 shows the slide locked state, and FIG. 4 shows the slide unlocked state.

Description will be made with reference to FIGS. 3 and 4 together. The seat slide device 100 is provided with a first lever 20 and a second lever 21 at positions on both sides of the lock member 14 along the x-axis. The first lever 20 and the second lever 21 are generally flat plate-shaped members, and are attached to the metal plates 9, 9 via a rotating shaft 22 with their normals along the y-axis. The rotation axis 22 is an axis parallel to the y-axis. The first lever 20 and the second lever 21 are attached to the metal plates 9, 9, respectively, so as to be rotatable around the rotary shaft 22. As shown in FIG. As shown in FIG. 2, the first lever 20 and the second lever 21 are housed between a pair of metal plates 9,9.

A first lever 20 provided on the x-direction side of the lock member 14 has an upper arm portion 20a extending generally upward from a rotating shaft 22, and rotates in the opposite direction to the upper arm portion 20a with the rotating shaft 22 interposed therebetween. and a lower arm 20b extending generally downwardly from the shaft 22. A transmission portion 20c that protrudes upward from the lock member 14 from the upper arm portion 20a is integrally formed with the upper arm portion 20a. As is clear from FIGS. 3 and 4, the transmission portion 20c engages with the lock member 14 to transmit the rocking motion of the lock member 14 about the rotating shaft 16 as the rocking motion of the first lever 20 about the rotating shaft 22. It has the function to

The second lever 21 provided on the −x direction side of the lock member 14 has an upper arm portion 21 a extending generally upward from the rotating shaft 22 and a lower arm portion extending generally downward from the rotating shaft 22 . and a portion 21b. The tip of the upper arm portion 20 a of the first lever 20 and the tip of the upper arm portion 21 a of the second lever 21 are connected to each other by a coil spring 23 . The elastic restoring force of the coil spring 23 urges the upper arm portion 20a and the upper arm portion 21a toward each other. As a result, the transmission portion 20c of the first lever 20 is always biased toward the lock member 14 around the rotating shaft 22. As shown in FIG.

As is clear from FIG. 3, the upper arm portion 21a of the second lever 21 does not have a portion corresponding to the transmission portion 20c of the first lever 20. Oscillation is not transmitted. Instead, the second lever 21 is formed with a transmission portion 21c extending upward from the rotating shaft 22, unlike the upper arm portion 21a. One end of the wire 24 is connected to the tip of the transmission portion 21c. The other end of wire 24 is connected to seat unlock lever 60 . When the seat unlock lever 60 rotates clockwise, the second lever 21 also rotates clockwise.

One end of a slider 26 is connected to each of the lower arm portion 20b of the first lever 20 and the lower arm portion 21b of the second lever 21 so as to be swingable around the support shaft 25 . The slider 26 is a rod-shaped member arranged with its longitudinal direction substantially along the x-axis. The slider 26 connected to the first lever 20 extends in the +x direction from the lower end of the lower arm 20b, while the slider 26 connected to the second lever 21 extends in the -x direction from the lower end of the lower arm 21b. extend to A contact portion 27 is integrally formed at the end of each slider 26 opposite to the support shaft 25 . The slider 26 and the contact portion 27 are integrally molded, for example, from a resin material.

When the operation portion 14b of the lock member 14 is pushed down in the -z direction to establish the unlocked state, the lock member 14 abuts against the transmission portion 20c as shown in FIG. is lifted. As a result, the upper arm portion 20 a of the first lever 20 moves away from the upper arm portion 21 a of the second lever 21 while resisting the elastic restoring force of the coil spring 23 . As a result, the first lever 20 swings counterclockwise around the rotating shaft 22, and as a result, the slider 26 on the first lever 20 side moves toward the lock member 14 side (-x direction side). Become. Details of subsequent operations will be described later.

5(a) is an enlarged cross-sectional view taken along line VV of FIG. 3, and FIG. 5(b) is an enlarged cross-sectional view taken along line VV of FIG. 5(a) and 5(b) together, the contact portion 27 includes an intermediate portion 27a and a front end of the intermediate portion 27a supported by the intermediate portion 27a in the y direction and the -y direction. and a pair of arms 27b, 27b provided. Each arm portion 27b is formed with a through-hole 28 having a rectangular cross-section extending substantially along the x-axis. A guide portion 19 formed at the end portion of the arm plate portion 11 is inserted through the through hole 28 .

As is clear from FIGS. 3 and 4, the guide portion 19 is inclined in its longitudinal direction with respect to the x-axis so as to approach the upper plate portion 5 as it goes toward its distal end side. That is, the guide portion 19 of the slider 26 arranged on the x-direction side is inclined so as to approach the upper plate portion 5 toward the x-direction side. Further, the guide portion 19 of the slider 26 arranged on the -x direction side is inclined so as to approach the upper plate portion 5 toward the -x direction side.

Since the guide portion 19 is inclined as described above, the end surface of the guide portion 19 on the z-direction side forms an inclined surface 19a formed on a portion of the upper rail 2 . The inclined surface 19a is a surface that is inclined with respect to the horizontal plane so as to face the z-direction side as the distance from the lock member 14 increases. The inner wall surface of the through-hole 28 is substantially parallel to the surface of the guide portion 19 that faces it. Therefore, the inner wall surface of the through-hole 28 on the z-direction side, ie, the top surface, forms an inclined surface like the inclined surface 19a. The same applies to the inner wall surface (that is, the bottom surface) of the through-hole 28 on the -z direction side.

Next, the operation of the seat 200 including the seat slide device 100 will be described. First, assume that the handle 212 is in the locked position (the position of the handle 212 in FIG. 3). At this time, the seat lock mechanism 231 is in a locked state, and the seat back 220 and the seat cushion 210 are locked in a sitting posture. A locked state is established in the slide lock mechanism 13 of the seat slide device 100 . The user may or may not be seated on the seat. In the locked state, as shown in FIG. 2(a), the claws 14a pass through the openings 10a, 7, and 11a, and the sliding movement of the upper rail 2 with respect to the lower rail 1 is restricted.

At this time, as shown in FIG. 3, the elastic restoring force of the coil spring 23 urges the upper arm portion 20a of the first lever 20 and the upper arm portion 21a of the second lever 21 toward each other along the x-axis. . The seat is in a normal posture, and the seat operating lever (handle 212) for establishing the unlocked state of the seat back 220 is not operated. Therefore, no force is applied from the wire 24 to the transmission portion 21c.

As shown in FIG. 3, the elastic restoring force of the coil spring 23 urges the upper arm portion 20a and the upper arm portion 21a toward each other along the x-axis. This pushes the sliders 26, 26 away from each other along the x-axis. Thus, as shown in FIG. 5A, the abutting portion 27 of each slider 26 is sandwiched like a wedge between the inclined surface 19a and the lower surface (abutted surface) of the upper plate portion 5. maintained in As a result, a force along the z-direction and a frictional force along the x-direction act between the contact portion 27 and the upper plate portion 5 . This suppresses looseness (relative displacement along the z-axis) between the lower rail 1 and the upper rail 2 .

3 and 4 schematically show only the wedge-shaped portion of the contact portion 27 sandwiched between the inclined surface 19a and the upper plate portion 5. As shown in FIG. The same applies to FIG. 6 described later. The wedge-shaped portion of the contact portion 27 on the front side of the vehicle tapers toward the front of the vehicle. A wedge-shaped portion of the contact portion 27 on the rear side of the vehicle tapers toward the rear of the vehicle.

Next, a case where the user moves the handle 212 to the first unlock position (the position indicated by reference numeral 212a in FIG. 4) will be described. The first unlocked position corresponds to a posture in which the handle 212 is rotated clockwise by an angle A1 from the locked position (position shown in FIG. 3). When the handle 212 moves from the lock position to the first unlock position, the slide unlock lever 50 rotates counterclockwise (the position indicated by reference numeral 50a in FIG. 4) as the handle 212 moves. At this time, the seat unlock lever 60 does not move. The interlocking mechanism of the handle 212, the slide unlock lever 50 and the seat unlock lever 60 will be described later.

When the slide unlock lever 50 rotates counterclockwise, the push-down pin 51 fixed to the slide unlock lever 50 moves downward to push down the operation portion 14b of the lock member 14. As shown in FIG. As described above with reference to FIG. 2, when the operation portion 14b is pushed down, the claw portions 14a of the lock member 14 are pulled out from the openings 10a, 7, and 11a, thereby preventing the upper rail 2 from sliding relative to the lower rail 1. The restriction is lifted (see FIG. 2(b)). Thus, sliding movement of the upper rail 2 along the x-axis is permitted. That is, the slide lock mechanism is released.

At this time, as shown in FIG. 4, the lock member 14 lifts the transmission portion 20c. Then, the upper arm portion 20 a of the first lever 20 moves away from the second lever 21 against the elastic restoring force of the coil spring 23 . As a result, the first lever 20 swings counterclockwise around the rotating shaft 22, and as a result, the slider 26 on the first lever 20 side moves toward the lock member 14 side (-x direction side). Become. As the slider 26 moves, the contact portion 27 arranged on the x-direction side moves away from the lower surface of the upper plate portion 5 . That is, the wedge-shaped portion of the contact portion 27 on the front side of the vehicle moves away from the lower rail 1 . As a result, a gap is formed between the contact portion 27 and the lower surface of the upper plate portion 5, as shown in FIGS. 4 and 5B. The sliding resistance between the upper rail 2 and the lower rail 1 via the contact portion 27 on the front side of the vehicle becomes zero.

On the other hand, the second lever 21 does not directly interlock with the locking member 14 . However, the second lever 21 rotates around the rotating shaft 22 due to the force from the coil spring 23 . Specifically, as the upper arm portion 20a of the first lever 20 moves away from the second lever 21, the upper arm portion 21a of the second lever 21 rotates counterclockwise around the rotation shaft 22. , is biased toward the lock member 14 side. Since the seat unlock lever 60 is not moved, the seat is in a normal posture as described above, and no force is applied from the wire 24 to the transmission portion 21c.

In this way, the upper arm portion 21a of the second lever 21 is urged toward the lock member 14 so as to rotate counterclockwise around the rotation shaft 22, so that the slider 26 on the second lever 21 side moves along the x-axis. is pushed toward the rear of the vehicle (to the -x direction side). Thus, as in the case where the locked state is established, the contact portion 27 of the slider 26 on the second lever 21 side is wedged between the inclined surface 19a and the lower surface (abutted surface) of the upper plate portion 5. It is maintained in a sandwiched state like As a result, a force along the z-direction and a frictional force along the x-direction act between the contact portion 27 and the upper plate portion 5 .

In the above state, it is assumed that the user slides the seat toward the front (first direction) of the vehicle, that is, moves the upper rail 2 toward the front of the vehicle with respect to the lower rail 1. . As is clear from FIG. 4, the inclined surface 19a of the guide portion 19 on the rear side of the vehicle is inclined in the z direction toward the rear of the vehicle, so that the upper rail 2 (that is, the guide portion 19) When moving forward of the vehicle, the contact portion 27 of the slider 26 on the rear side of the vehicle attempts to further enter between the inclined surface 19a and the lower surface of the upper plate portion 5 due to the aforementioned frictional force. As a result, the above-mentioned frictional force, that is, sliding resistance increases. At this time, since there is a gap between the contact portion 27 of the slider 26 on the front side of the vehicle and the lower surface of the upper plate portion 5, the sliding resistance is 0 (zero). The sliding resistance (sliding resistance against forward movement) of the upper rail 2 in this case is referred to as first sliding resistance.

On the other hand, the user slides the seat toward the rear of the vehicle (second direction opposite to the first direction), that is, moves the upper rail 2 toward the rear of the vehicle with respect to the lower rail 1. Imagine a scene. As is clear from FIG. 4, the inclined surface 19a of the guide portion 19 on the rear side of the vehicle is inclined in the -z direction toward the front of the vehicle. Therefore, when the upper rail 2 (that is, the guide portion 19) moves toward the rear of the vehicle, the abutment portion 27 of the slider 26 on the rear side of the vehicle moves between the inclined surface 19a and the lower surface of the upper plate portion 5 due to the aforementioned frictional force. try to get out of the As a result, the aforementioned frictional force, ie sliding resistance, is reduced. At this time, since there is a gap between the contact portion 27 of the slider 26 on the front side of the vehicle and the lower surface of the upper plate portion 5, the sliding resistance is 0 (zero). The sliding resistance (sliding resistance against backward movement) of the upper rail 2 in this case is called a second sliding resistance. Here, the sliding resistance of the contact portion 27 on the rear side of the vehicle is reduced compared to when sliding forward, so the second sliding resistance is smaller than the first sliding resistance.

According to the above, the slide lock mechanism 13 of the seat slide device 100 is released when the handle 212 is moved from the lock position (position shown in FIG. 3) to the first unlock position (position indicated by reference numeral 212a in FIG. 4). In addition, while the sliding resistance is set to a moderate value (first sliding resistance) when moving the upper rail 2 toward the front of the vehicle, the sliding resistance when moving the upper rail 2 toward the rear of the vehicle is set. The dynamic resistance (second sliding resistance) is lower than the first sliding resistance. In general, the seat slide device 100 is arranged with a slight forward-downward inclination so as to approach the ground toward the front of the vehicle. Therefore, according to the seat slide device 100 of the present embodiment, sudden movement of the seat can be suppressed when the seat is moved forward, and the seated user can comfortably move the seat without feeling frightened. can be made

Next, a case where the user moves the handle 212 to the second unlock position (the position indicated by reference numeral 212b in FIG. 6) will be described. The second unlocked position corresponds to a posture in which the handle 212 is further rotated clockwise from the first unlocked position by an angle A2. When the handle 212 moves from the first unlocked position to the second unlocked position, the seat unlock lever 60 rotates clockwise as the handle 212 moves (position 60a in FIG. 6). At this time, the seat unlock lever 60 further rotates counterclockwise, but the contact portion 27 of the slider 26 in front of the vehicle only moves further away from the upper plate portion 5, so the movement of the slide lock mechanism 13 is has no effect here. That is, the slide lock mechanism 13 is held in the released state. The interlocking mechanism of the handle 212, the slide unlock lever 50 and the seat unlock lever 60 will be described later.

As described above, when the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released and the seat back 220 becomes rotatable.

Further, when the seat unlock lever 60 rotates clockwise, the wire 24 connected to the upper end of the seat unlock lever 60 is pulled toward the rear of the vehicle. As a result, the transmission portion 21 c of the second lever 21 is pulled away from the lock member 14 against the elastic restoring force of the coil spring 23 . In this way, the second lever 21 swings clockwise around the rotary shaft 22, and the slider 26 on the second lever 21 side moves toward the lock member 14 side. As a result, as shown in FIG. 6, a gap is formed between the contact portion 27 of the slider 26 on the second lever 21 side and the lower surface of the upper plate portion 5 . That is, the wedge-shaped portion of the contact portion 27 on the vehicle rear side is separated from the lower rail 1, and the sliding resistance between the upper rail 2 and the lower rail 1 via the contact portion 27 on the vehicle rear side becomes zero.

At this time, since the slide lock mechanism 13 remains released, the contact portion 27 of the slider 26 on the side of the first lever 20 remains separated from the upper plate portion 5 . Since the contact portions 27 of the sliders 26 on the first lever 20 side and the second lever 21 side are both separated from the upper plate portion 5, the upper rail 2 can easily slide in the front-rear direction with respect to the lower rail 1. The sliding resistance of the upper rail 2 at this time is called low sliding resistance. The low sliding resistance is smaller than both the first sliding resistance and the second sliding resistance. Low sliding resistance is approximately zero.

According to the above, the frictional force between the contact portions 27 on the front and rear sides of the vehicle and the lower surface of the upper plate portion 5 becomes substantially zero. can set the low sliding resistance to be extremely small. As a result, the user can easily and comfortably move the seat 200 toward the front and rear of the vehicle with light force. Further, as described above, in general, the seat slide device 100 is arranged slightly inclined so as to approach the ground toward the front of the vehicle. It is also possible to move the seat 200 forward of the vehicle only by the weight of the seat without applying force to the seat.

The contact portions 27 arranged on the front side and the rear side of the vehicle are members held by the upper rail 2, and are formed by connecting the lower rail 1 (upper plate portion 5) and the upper rail 2 ( It can be said that it is a member sandwiched between the guide portion 19) and the guide portion 19).

The seat 200 described above has the following configuration. The seat 200 includes a seat cushion 210 , a seat back 220 , a seat lock mechanism 231 , a lower rail 1 , an upper rail 2 , a slide lock mechanism 13 and a handle 212 . Seat back 220 is rotatably supported with respect to seat cushion 210 by hinge 230 . The seat lock mechanism 231 locks the seat cushion 210 and the seat back 220 in a sitting posture. The lower rail 1 is fixed to the floor of the vehicle. The upper rail 2 is fixed to the seat cushion 210 and supported by the lower rail 1 so as to be slidable in the longitudinal direction of the vehicle. A slide lock mechanism 13 locks the upper rail 2 with respect to the lower rail 1 . The handle 212 is a member for releasing the seat lock mechanism 231 and the slide lock mechanism 13 . When the handle 212 is moved from the lock position (position 212 in FIG. 3) to the first unlock position (position 212a in FIG. 4), the slide lock mechanism 13 is opened while the seat lock mechanism 231 is held in the locked state. be released. At this time, the first sliding resistance is set as the sliding resistance against forward movement of the upper rail 2 . A second sliding resistance smaller than the first sliding resistance is set as the sliding resistance against the rearward movement of the upper rail 2 .

When the handle 212 is moved from the first unlocked position to the second unlocked position (position 212b in FIG. 6), the seat lock mechanism 231 is released while the slide lock mechanism 13 remains released. At the same time, the sliding resistance of the upper rail 2 is set to a low sliding resistance that is smaller than the first and second sliding resistances.

The seat 200 of the embodiment can be slid forward with an appropriate sliding resistance value (first sliding resistance) and can be slid back and forth with a small sliding resistance value (low sliding resistance) with one handle 212. You can switch between states. The former allows the seat 200 to be safely slid forward when the user is seated on the seat. The latter allows the seat to be easily slid with a small amount of force when, for example, the second row seat is reclined to get into the third row.

A mechanism for interlocking the handle 212, the slide unlock lever 50, and the seat unlock lever 60 will be described with reference to FIGS. 7 to 9. FIG. FIG. 7 shows the state when the handle 212 is in the locked position. The handle 212 is rotatably connected to the side surface of the seat cushion 210 about the rotating shaft 213 . The handle 212 has a structure in which a body portion 214 operated by a user and a lever portion 215 are connected in an L shape. One end of the connecting rod 55 is connected to the lever portion 215 . The upper end of the slide unlock lever 50 is connected to the other end of the connecting rod 55 . A long hole 216 is provided in the lever portion 215 . One end of the wire 62 is engaged with the long hole 216 . One end of the wire 62 is engaged with the long hole 216 so as to be swingable along the longitudinal direction. The wire 62 has its direction reversed via a pulley 63 and the other end is connected to the upper end of the seat unlock lever 60 .

A lower end of the slide unlock lever 50 is rotatably connected to a rotary shaft 52 . A sub-lever 54 extends from the middle of the slide unlock lever 50, and a push-down pin 51 is connected to the tip of the sub-lever 54. - 特許庁The push-down pin 51 extends in the y-axis direction of the coordinate system in the drawing. As described above, the operation portion 14b of the lock member 14 of the seat slide device 100 is in contact with the lower side of the push-down pin 51. As shown in FIG.

A lower end of the seat unlock lever 60 is rotatably connected to a rotary shaft 61 . The seat unlock lever 60 is connected to the seat lock mechanism 231, and when rotated clockwise, the seat lock mechanism 231 is released. A mechanism for unlocking the seat lock by operating the lever employs a conventionally known mechanism, so a detailed description thereof will be omitted.

FIG. 8 shows a state in which the handle 212 has been moved from the locked position (the position shown in FIG. 7) to the first unlocked position (the position indicated by reference numeral 212a). It can be moved from the locked position to the first unlocked position by rotating the body portion 214 of the handle 212 by an angle A1. When the handle 212 is moved to the first lock position, the lever portion 215 rotates clockwise, and the connecting rod 55 moves leftward (forward of the vehicle). When the connecting rod 55 moves leftward, the slide unlocking lever 50 connected to its tip rotates counterclockwise. When the slide unlock lever 50 rotates counterclockwise, the push-down pin 51 pushes down the operating portion 14b. As described above, when the operating portion 14b is pushed down, the slide lock mechanism 13 is released and the upper rail 2 becomes slidable. At this time, the sliding resistance of the upper rail 2 with respect to the lower rail 1 becomes a first sliding resistance against forward sliding and a second sliding resistance against rearward sliding.

One end of the wire 62 moves from the left end to the right end of the elongated hole 216 of the lever portion 215 while the handle 212 is rotated by the angle A1. One end of wire 62 only moves through slot 216 and is not in tension. Since the wire 62 is not pulled, the seat lock mechanism 231 keeps the seat back 220 locked even when the handle 212 is moved from the lock position to the first unlock position.

FIG. 9 shows a state in which the handle 212 has been moved from the first unlocked position to the second unlocked position (position indicated by reference numeral 212b). The handle 212 can be moved from the first unlocked position to the second unlocked position by further rotating the body portion 214 of the handle 212 by an angle A2. When the handle 212 is moved to the second lock position, the lever portion 215 rotates further clockwise. Although the connecting rod 55 moves further to the left, the state of the slide lock mechanism 13 remains unchanged, as described above.

When the lever portion 215 rotates further clockwise, the wire 62 locked to the right end of the long hole 216 is pulled leftward (vehicle front side). The other end of the wire 62 is connected to the upper end of the seat unlock lever 60 via a pulley 63, and the seat unlock lever 60 rotates clockwise. As described above, when the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released, allowing the seat back 220 to rotate with respect to the seat cushion 210 . A wire 24 is connected to the tip of the seat unlock lever 60, and when the wire 24 is pulled rightward, the sliding resistance of the upper rail 2 with respect to the lower rail 1 changes to low sliding resistance. The low sliding resistance is smaller than the first sliding resistance and the second sliding resistance.

As described above, when the handle 212 is moved from the lock position (position 212 in FIG. 7) to the first unlock position (position 212a in FIG. 8), the seat lock mechanism 231 is held in the locked state. The slide lock mechanism 13 is released. At this time, the sliding resistance against forward movement of the upper rail 2 is set to the first sliding resistance. When the handle 212 is moved from the first unlocked position to the second unlocked position (position 212b in FIG. 9), the seat lock mechanism 231 is released while the slide lock mechanism 13 is kept released, and the upper rail 2 is released. is set to a low sliding resistance that is smaller than the first sliding resistance. As described above, the seat 200 of the first embodiment provides an appropriate sliding resistance when the seat is moved forward in a sitting posture by operating one handle 212, and the seat back is unlocked. It can be realized that a small sliding resistance is given when the seat is moved forward in the state of being held.

(Modification) A modification of the seat of the first embodiment will be described. In the seat of the modified example, the shapes of the first lever 20 and the second lever 21 of the first embodiment are different. With reference to FIGS. 10 to 12 , the cooperative relationship among the first lever 120, the second lever 121, the locking member 114, and the handle 212 will be described. 10 to 12 show only the portion of the handle 212 that is held by the user. The handle 212 is the same as the handle 212 of the first embodiment. However, the wire 62 is not connected to the handle 212 of the modified example. The lock member 114 has the same structure as the lock member 14 of the first embodiment, but the shape is simplified in FIGS. 10-12 .

The first lever 120 and the second lever 121 are rotatably attached to a metal plate 9 (not shown in FIGS . 10 to 12) via a rotating shaft 22, respectively. The rotation axis 22 is an axis parallel to the y-axis.

A first lever 120 provided on the x-direction side of the lock member 114 rotates in the opposite direction to the upper arm portion 120a extending generally upward from the rotating shaft 22 with the rotating shaft 22 interposed therebetween. and a lower arm 120b extending generally downward from the shaft 22. A transmission portion 120c that protrudes upward from the lock member 114 from the upper arm portion 120a is integrally formed with the upper arm portion 120a. The transmission portion 120c has a function of engaging with the lock member 114 and transmitting the rocking motion of the lock member 114 about the rotating shaft 16 (see FIG. 2) as the rocking motion of the first lever 120 about the rotating shaft 22. there is

The second lever 121 provided on the −x direction side of the lock member 114 has an upper arm portion 121 a extending generally upward from the rotating shaft 22 and a lower arm portion extending generally downward from the rotating shaft 22 . and a portion 121b. A transmission portion 121c that protrudes upward from the lock member 114 from the upper arm portion 121a is integrally formed with the upper arm portion 121a. The transmission portion 121 c has a function of engaging with the lock member 114 and transmitting the rocking motion of the lock member 114 about the rotating shaft 16 as the rocking motion of the second lever 121 about the rotating shaft 22 . However, in the state of FIG. 10 , a gap dH is secured between the lock member 114 and the tip of the transmission portion 121c. One end of a connecting rod 124 is connected to the upper arm portion 121 a of the second lever 121 . A seat unlock lever 60 is connected to the other end of the connecting rod 124 . When the second lever 121 rotates clockwise, the seat unlock lever 60 connected by the connecting rod 124 also rotates clockwise. When the seat unlock lever 60 rotates clockwise, the seat lock mechanism 231 is released, allowing the seat back to rotate relative to the seat cushion.

The tip of the upper arm portion 120 a of the first lever 120 and the tip of the upper arm portion 121 a of the second lever 121 are connected to each other by a coil spring 123 . The elastic restoring force of the coil spring 123 urges the upper arm portion 120a and the upper arm portion 121a toward each other. As a result, the transmission portion 120c of the first lever 120 is always biased toward the lock member 114 around the rotating shaft 22. As shown in FIG. A stopper 129 is provided on the second lever 121 side to limit the counterclockwise rotation range of the second lever 121 . The stopper 129 is provided on the metal plate 9 (not shown). The tip of the upper arm portion 121a of the second lever 121 is biased leftward by the coil spring 123, but the counterclockwise rotation of the second lever 121 is prevented by the stopper 129 from the tip of the transmission portion 121c and the lock member 114. is restricted at a position where a gap dH is ensured between

The lower arm portion 120b of the first lever 120 and the lower arm portion 121b of the second lever 121 are connected to the same slider 26 as in the first embodiment. Since the movements of the first lever 120 and the second lever 121 and the movement of the slider 26 are the same as in the first embodiment, illustration and description thereof are omitted.

The interlocking relationship between the lock member 114 and the handle 212 is the same as in the first embodiment. That is, when the handle 212 is moved from the locked position to the first unlocked position (position 212a in FIG. 11 ), the push-down pin 51 of the slide unlock lever 50 (not shown) pushes down the operating portion of the lock member 114, thereby locking. Member 114 rotates about an axis of rotation parallel to the x-axis. The lock member 114 rotates, the slide lock mechanism 13 is released, and the seat becomes movable in the longitudinal direction.

When the operation portion 14b of the lock member 114 is pushed down in the -z direction to establish the unlocked state, the lock member 114 and the transmission portion 120c are lifted. As a result, the upper arm portion 120 a of the first lever 120 moves away from the upper arm portion 121 a of the second lever 121 while resisting the elastic restoring force of the coil spring 23 . As a result, the first lever 120 rotates counterclockwise around the rotary shaft 22, and the slider 26 on the first lever 120 side moves toward the lock member 14 (-x direction side). Become. At this time, a gap is formed between the contact portion 27 of the slider 26 on the side of the first lever 120 and the lower surface of the upper plate portion 5 as in the case of the first embodiment, thereby reducing the sliding resistance. The sliding resistance at this time is the first sliding resistance for forward movement, and the second sliding resistance for backward movement.

When the handle 212 moves from the locked position to the first unlocked position (position 212a in FIG. 11), the lock member 114 is lifted to the position 114a in FIG. The lock member 114 is lifted by a distance dH from the initial position (position shown in FIG. 10). The initial clearance between the tip of the transmission portion 121c of the second lever 121 and the lock member 114 is also dH. Therefore, even if the handle 212 moves from the locked position to the first unlocked position, the second lever 121 does not move.

When the handle 212 is moved from the first unlocked position to the second unlocked position (the position indicated by reference numeral 212b in FIG. 12), the locking member 114 is further raised to lift the transmission portion 121c of the second lever 121. As shown in FIG. As a result, the second lever 121 swings clockwise around the rotary shaft 22, and thereby the slider 26 on the second lever 121 side moves toward the lock member 114 side (x direction side). At this time, a gap is formed between the contact portion 27 of the slider 26 on the side of the second lever 121 and the lower surface of the upper plate portion 5, similarly to the case of the first embodiment, and the sliding resistance is further reduced. The sliding resistance value at this time is low sliding resistance.

Further, when the second lever 121 rotates clockwise around the rotary shaft 22, the seat unlock lever 60 connected to the upper arm portion 121a via the connecting rod 124 also rotates clockwise, and the seat lock mechanism 231 is activated. be released.

The result of the coordinated operation of the handle 212, the first lever 120 and the second lever 121 of the modified example is summarized as follows. When the handle 212 is moved from the lock position to the first unlock position, the slide lock mechanism 13 is released while the seat lock mechanism 231 is held, and the sliding resistance of the upper rail 2 against the lower rail 1 is reduced to forward movement. A first sliding resistance is set for backward movement, and a second sliding resistance is set for backward movement. When the handle 212 is moved from the first unlocked position to the second unlocked position, the seat lock mechanism 231 is released while the slide lock mechanism 13 is maintained in the released state, and the sliding resistance of the upper rail 2 to the lower rail 1 is released. is set to a low sliding resistance that is smaller than the first and second sliding resistances. As in the case of the first embodiment, the seat of the modified example can also be operated by operating the handle 212 so that the seat can be slid with an appropriate sliding resistance while the seat is locked, and in the state where the seat is unlocked. A state in which the seat can be slid with light sliding resistance can be selected.

(Second Embodiment) Next, a sheet 300 of a second embodiment will be described. FIG. 13 schematically shows the sheet 300 of the second embodiment. In FIG. 13, a portion of the seat cushion 310 and a portion of the seat back 320 are drawn in phantom lines.

Since the seat slide device of the seat 300 is the same as that of the seat 200 of the first embodiment, the explanation is omitted. The second embodiment seat 300 includes a first handle 312 and a second handle 322 . A first handle 312 is attached to the side of the seat cushion 310 of the seat 300 . A second handle 322 is attached to the side of the seat back 320 .

A first handle 312 is attached to the seat cushion 310 so as to be rotatable around a rotation axis 313 parallel to the y-axis. The first handle 312 has an L shape, one side of which is operated by the user, and one end of a wire 315 is connected to a lever portion 314 which is the other side of the L shape. The other end of wire 315 is connected to slide unlock lever 50 . When the user rotates the first handle 312 clockwise, the wire 315 is pulled to the left (vehicle front side), and the slide unlock lever 50 rotates counterclockwise about the rotation shaft 52 . When the slide unlock lever 50 rotates counterclockwise, the push-down pin 51 extending in the y-axis direction from the tip of the sub-lever 54 pushes down the operation portion 14b of the lock member 14 of the seat slide device 100. As shown in FIG. When the operation portion 14b is lowered, the slide lock mechanism 13 is released, as described above, and the sliding resistance of the upper rail 2 is reduced to the first sliding resistance (when sliding forward) and the second sliding resistance (when sliding forward). When sliding backward) is set. Since the first handle 312 does not cooperate with the seat unlock lever 60 , the seat lock mechanism 231 keeps the seat back 320 locked when the slide lock mechanism 13 is released by operating the first handle 312 .

The second handle 322 is attached to the side surface of the seat back 320 so as to be rotatable around a rotation axis 323 parallel to the y-axis. The second handle 322 has an L shape, one side of which is operated by the user, and one end of a wire 325 and one end of a wire 327 are connected to a lever portion 324 which is the other side of the L shape. ing.

The wire 325 is redirected through a pulley 326 and connected to the slide unlock lever 50 at the other end. When the user rotates the second handle 322 counterclockwise, the wire 325 causes the slide unlock lever 50 to rotate counterclockwise about the rotation shaft 52 . Then, as in the case of the first handle 312, the slide lock mechanism 13 is released, and the sliding resistance of the upper rail 2 changes between the first sliding resistance (when sliding forward) and the second sliding resistance (when sliding backward). slide).

The wire 327 is redirected through pulleys 328 and 329 and the other end is connected to the seat unlock lever 60 . When the user rotates the second handle 322 counterclockwise, the wire 327 rotates the seat unlock lever 60 clockwise about the rotation shaft 61 . Then, the seat lock mechanism 231 is released as in the case of the first embodiment. One end of the wire 24 is connected to the seat unlock lever 60, and the other end of the wire 24 is connected to the second lever 21 as in the first embodiment (see FIGS. 3, 4 and 6). reference). When the wire 24 is pulled rightward (vehicle rear side), the sliding resistance of the upper rail 2 is set to a low sliding resistance that is smaller than the first and second sliding resistances.

As described above, when the second handle 322 is operated, both the slide lock mechanism 13 and the seat lock mechanism 231 are released, and the sliding resistance to the longitudinal movement of the seat 300 is set to low sliding resistance. .

With the seat 300 of the second embodiment, the user selects either the first handle 312 or the second handle 322 to provide an appropriate sliding resistance when the seat is moved forward in a sitting posture. , it can be chosen to provide a small sliding resistance when moving the seat forward with the seat back unlocked.

A contact portion 27 at the front end of the slider 26 on the front side of the vehicle is held by the upper rail 2 and is tapered toward the front of the vehicle. The contact portion 27 on the vehicle front side is sandwiched between the lower rail 1 and the upper rail 2 . The contact portion 27 on the vehicle rear side corresponds to the first wedge member. A contact portion 27 at the tip of the slider 26 on the rear side of the vehicle is held by the upper rail 2 and tapers toward the rear of the vehicle. The contact portion 27 on the vehicle rear side is sandwiched between the lower rail 1 and the upper rail 2 . The contact portion 27 on the vehicle rear side corresponds to a second wedge member. The slider 26, the first lever 20, and the slide unlock lever 50 on the front side of the vehicle correspond to a first interlocking mechanism that moves the first wedge member rearward of the vehicle when the handle 212 is moved from the lock position to the first unlock position. do. The wires 24, 62, the seat unlock lever 60, the second lever 21, and the slider 26 at the rear of the vehicle move the second wedge member forward of the vehicle when the handle 212 is moved from the first unlock position to the second unlock position. It corresponds to a second interlocking mechanism that allows

Another modified example will be described. In the seat 200 of the first embodiment, the handle 212 and the seat unlock lever 60 are connected by the wire 62 and the seat unlock lever 60 and the second lever 21 are connected by the wire 24 . The wire may be removed from the seat unlock lever 60 and the wire 62 may be directly connected to the wire 24 . That is, in the seat 200 of the embodiment described above, the seat unlock lever 60 may be separated from the handle 212 . In such a structure, when the handle 212 is moved from the first unlocked position 212a (FIG. 4) to the second unlocked position 212b (FIG. 6), there is no change in the seat lock mechanism 231 and the sliding resistance of the upper rail 2 is reduced. is switched from the first and second sliding resistances to the low sliding resistance. A handle for releasing the seat lock mechanism 231 may be provided separately. A seat with such a structure can switch the sliding resistance of the upper rail 2 (that is, the seat 200 ) from the first and second sliding resistances to a low sliding resistance depending on the movement position of the handle 212 .

Also in the seat 300 of the second embodiment, the wire 327 may be detached from the wire 24 to the seat unlock lever 60 and the wire 327 may be directly connected to the wire 24 . Then, when the second handle 322 is operated, the slide lock mechanism 13 is released and the sliding resistance of the upper rail 2 is set to low sliding resistance.

A modified example of the seat slide device will be described below.

FIG. 14 is a diagram schematically showing the internal structure of a seat slide device 100A according to a first modified example. FIG. 14 shows the locked state established in the lock mechanism 13 . In the following, only differences from the seat slide device 100 of the first embodiment will be described, and descriptions of common features with the seat slide device 100 will be omitted as appropriate.

In the seat slide device 100A according to the first modified example, the incorporation of the first lever 20 in the first embodiment is omitted. That is, nothing is interlocked with the operation of the locking member 14 . As is clear from FIG. 14, one end of the coil spring 23 is locked in a locking hole 9a formed in the metal plate 9. As shown in FIG. The other end of the coil spring 23 is connected to the upper arm portion 21 a of the second lever 21 . For this reason, the elastic restoring force of the coil spring 23 urges the upper arm 21a toward the lock member 14 so as to rotate counterclockwise around the rotating shaft 22, as described above. Therefore, the contact portion 27 of the slider 26 on the rear side of the vehicle is urged in the -x direction, and is maintained in a wedge-like state between the inclined surface 19a and the lower surface of the upper plate portion 5. It is

On the other hand, one end of the slider 26 on the front side of the vehicle is connected to one end of a coil spring 30 extending along the x-axis. It is locked in the stop hole 9b. The contact portion 27 described above is integrally formed at the other end (the end in the x direction) of the slider 26 . The slider 26 on the one side is urged in the -x direction by the elastic restoring force of the coil spring 30 .

In the first modified example, the inclined surfaces 19a of the contact portion 27 and the guide portion 19 on the front side of the vehicle are configured in the same manner as the inclined surfaces 19a of the contact portion 27 and the guide portion 19 on the rear side of the vehicle. That is, the inclined surface 19a of the guide portion 19 on the front side of the vehicle is inclined in the -z direction toward the front of the vehicle. Therefore, the contact portion 27 of the slider 26 on the front side of the vehicle is urged in the -x direction by the elastic restoring force of the coil spring 30, and the wedge between the inclined surface 19a and the lower surface of the upper plate portion 5 is formed. It is maintained in a sandwiched state like The contact portion 27 on the front side has a tapered shape toward the rear of the vehicle and is sandwiched between the upper rail 2 and the lower rail 1 .

The seat slide device 100A configured as described above can achieve the same effects as the seat slide device 100 of the first embodiment. That is, regardless of whether the slide is locked or unlocked, the elastic restoring force of the coil spring 23 pushes the slider 26 on the rear side of the vehicle toward the rear of the vehicle. , is sandwiched between the inclined surface 19a and the lower surface of the upper plate portion 5 like a wedge. Similarly, the elastic restoring force of the coil spring 30 pulls the slider 26 on the front side of the vehicle toward the rear of the vehicle. It is maintained in a state of being sandwiched like a wedge between

Next, it is assumed that the unlocked state (released state) is established in the slide lock mechanism 13 when the passenger is seated. As already described, in the first modified example, the inclined surfaces 19a, 19a on both the front side and the rear side of the vehicle are inclined in the z direction toward the rear of the vehicle. Therefore, when the seat, that is, the upper rail 2 tries to move toward the front of the vehicle, the contact portions 27, 27 on both the front side and the rear side of the vehicle will contact the inclined surface 19a due to the frictional force received from the upper plate portion 5. It tries to enter further between the lower surface of the upper plate portion 5 and the lower surface of the upper plate portion 5 . As a result, the frictional force or sliding resistance (first sliding resistance) that the upper rail 2 receives increases.

On the other hand, when the occupant moves the upper rail 2 toward the rear of the vehicle with respect to the lower rail 1, when the seat, that is, the upper rail 2 moves toward the rear of the vehicle, both the front side and the rear side of the vehicle The contact portions 27 , 27 try to separate from between the inclined surface 19 a and the lower surface of the upper plate portion 5 due to the frictional force received from the upper plate portion 5 . As a result, the aforementioned frictional force, that is, sliding resistance (second sliding resistance) is reduced.

Further, similarly to the above, when the handle 212 moves to the second unlock position 212b (see FIG. 9), the wire 24 is pulled toward the rear of the vehicle in conjunction with the operation of the handle 212. As shown in FIG. As a result, the transmission portion 21 c of the second lever 21 is pulled away from the lock member 14 against the elastic restoring force of the coil spring 23 . Also, the second lever 21 swings clockwise around the rotary shaft 22, and the slider 26 on the second lever 21 side moves toward the lock member 14 side.

As a result, a gap is formed between the contact portion 27 of the slider 26 on the rear side of the vehicle and the lower surface of the upper plate portion 5 . The sliding resistance between the contact portion 27 on the rear side of the vehicle and the lower surface of the upper plate portion 5 is zero regardless of the moving direction of the seat. On the other hand, the sliding resistance between the contact portion 27 on the front side of the vehicle and the lower surface of the upper plate portion 5 has different magnitudes depending on the moving direction, as in the case when the passenger is seated. . That is, the sliding resistance when moving the seat forward is greater than the sliding resistance when moving the seat rearward.

As described above, in the first modification, only the sliding resistance between the contact portion 27 on the rear side of the vehicle and the lower surface of the upper plate portion 5 is controlled by moving the handle 212 from the first unlock position 212a to the second unlock position. It changes when it is moved to the lock position 212b. Note that the seat unlock lever 60 may or may not be interlocked with the handle 212 .

Also in this modified example, the respective contact portions 27 arranged on the front side and the rear side of the vehicle are members held by the upper rail 2, and in order to increase the sliding resistance, the lower rail 1 (upper plate portion 5) and the upper rail 2 (guide portion 19). The contact portion 27 arranged on the front side corresponds to the "first wedge member" in this modified example. Further, the abutment portion 27 arranged at a position on the rear side of the first wedge member corresponds to the "second wedge member" in this modified example.

The respective sliders 26 arranged on the front side and the rear side of the vehicle move the contact portions 27 in the same predetermined direction (specifically, the -x direction) to move the contact portions 27 between the contact portions 27 and the lower rails 1. It can be said that it is a member that increases the sliding resistance by increasing the working frictional force. The front slider 26 slides by moving the first wedge member in the -x direction and increasing the frictional force acting between the first wedge member and the lower rail (upper plate portion 5). It corresponds to the 'first support member' for increasing the resistance. In addition, the slider 26 arranged at a position on the rear side of the first support member moves the second wedge member in the -x direction, causing the second wedge member and the lower rail (upper plate portion 5) to move. It corresponds to the "second supporting member" for increasing the sliding resistance by increasing the frictional force acting therebetween.

As shown in FIG. 15, the seat slide device 100A as described above may further incorporate a connecting member 31 that connects the slider 26 on the front side of the vehicle and the slider 26 on the rear side of the vehicle (seat slide device 100A). second variant of the device). The −x direction end of the connecting member 31 is rotatably connected to the lower end of the lower arm 21b together with the slider 26 on the rear side of the vehicle. The end of the connecting member 31 on the x-direction side is connected to the slider 26 on the front side of the vehicle.

Therefore, when the wire 24 is pulled toward the rear of the vehicle in conjunction with the operation of the handle 212 (or the second handle 322), the slider 26 on the front side of the vehicle is pulled forward of the vehicle by the connecting member 31. pushed towards. As a result, a gap is formed between the contact portion 27 on the front side of the vehicle and the lower surface of the upper plate portion 5 . As a result, the frictional force between the contact portion 27 and the lower surface of the upper plate portion 5 becomes 0 on the front side of the vehicle (same as on the rear side), so that the seat is moved forward of the vehicle. The sliding resistance of the upper rail 2 with respect to the lower rail 1 at the time can be set to be even smaller.

FIG. 16 is a diagram schematically showing the internal structure of a seat slide device 100B according to a third modification of the invention. FIG. 16 shows the locked state established in the lock mechanism 13 . Only the points that are different from the first embodiment will be described below, and the description of the points that are common to the first embodiment will be omitted as appropriate.

In the seat slide device 100B according to the third modification, the structure of the second lever 21 is changed from the seat slide device 100 of the first embodiment. Specifically, a swinging member 32, which is a rod-shaped member, is connected to the upper arm portion 21a of the second lever 21 so as to swing about a swinging shaft 33 defined parallel to the y-axis. The rocking member 32 includes the rocking shaft 33 described above, a straight portion 32b, and a shaft portion 32a. The straight portion 32b is a straight portion extending from the swing shaft 33 in a direction perpendicular to the y-axis. The shaft portion 32a is a linear portion extending from the end of the linear portion 32b on the side opposite to the swing shaft 33 in the depth direction (that is, the -y direction) of FIG. The shaft portion 32a is arranged along the side surface of the upper arm portion 21a of the second lever 21 on the lock member 14 side.

The swing shaft 33 in this modified example is a linear portion extending in the depth direction of the paper surface of FIG. there is The swing shaft 33 is inserted through, for example, a hole formed in the upper arm portion 21a. The rocking member 32 is rotatably supported around the rocking shaft 33 with respect to the second lever 21 .

A transmission member 34 rotatably supported on the rotary shaft 22 is associated with the swing member 32 . The transmission member 34 has a function of engaging with the lock member 14 and transmitting the rocking motion of the locking member 14 as the rocking motion of the second lever 21 , similarly to the transmission portion 20 c of the first lever 20 . A protrusion 34a that protrudes in the +z direction is formed on the upper side surface of the transmission member 34 in the +z direction. A first region is defined on the side surface of the transmission member 34 on the base end side (that is, on the rotating shaft 22 side), and a second region is defined on the side surface of the transmission member 34 on the distal end side, with the projection 34a as a boundary. In FIG. 16, the shaft portion 32a of the rocking member 32 is arranged in the first region.

The rocking member 32 is further associated with a cam member 35 that is rotatably supported on the rotating shaft 22 . A cam surface 35a is formed on the upper side surface of the cam member 35 in the +z direction. A shaft portion 32a of the swing member 32 is associated with the cam surface 35a. As a result, the shaft portion 32a of the swinging member 32 can change its position from the first region of the transmission member 34 to the second region in accordance with the swinging motion of the cam member 35 about the rotating shaft 22 . A lever 36 extending upward is integrated with the cam member 35 . For example, the occupant manually operates the lever 36 to swing the cam member 35 .

Next, the operation of the seat slide device 100B will be described. When the slide lock mechanism 13 is in a locked state, the elastic restoring force of the coil spring 23 causes the upper arm 20a of the first lever 20 and the upper arm 21a of the second lever 21 to approach each other along the x-axis. energized. As a result, the sliders 26, 26 are pushed away from each other along the x-axis. In this way, each contact portion 27 is sandwiched between the inclined surface 19a and the lower surface (abutted surface) of the upper plate portion 5 like a wedge. has a force along the z-direction and a frictional force along the x-direction.

Next, when the unlocked state is established in the slide lock mechanism 13, the lock member 14 lifts the transmission portion 20c and the transmission member 34 as shown in FIG. The upper arm portion 20 a of the first lever 20 swings away from the second lever 21 against the elastic restoring force of the coil spring 23 . On the other hand, since the shaft portion 32a of the swinging member 32 engages the protrusion 34a of the transmission member 34 and remains in the first region, the protrusion 34a of the transmission member 34 causes the second lever 21 to elastically restore the coil spring 23. It is swung away from the first lever 20 (that is, clockwise) against the force. As a result, both sliders 26 move closer to each other, so that the respective contact portions 27 are separated from the lower surface of the upper plate portion 5, and a gap is formed between the contact portions 27 and the lower surface of the upper plate portion 5. It is formed. Therefore, the sliding resistance when the seat is slid forward and the sliding resistance when the seat is slid rearward are both reduced. Such a state is set when the passenger is not seated on the seat.

On the other hand, when the unlocked state is established, the lever 36 is operated to swing the cam member 35 clockwise in FIG. When the cam member 35 further swings clockwise, the shaft portion 32a of the swinging member 32 is released from engagement with the protrusion 34a. As a result, the elastic restoring force of the coil spring 23 swings the upper arm portion 21 a of the second lever 21 toward the lock member 14 . As a result, as shown in FIG. 18, the shaft portion 32a of the swing member 32 moves from the first region of the transmission member 34 to the second region.

As a result, the slider 26 on the rear side of the vehicle is pushed in the direction toward the rear of the vehicle. In this way, the contact portion 27 on the rear side is sandwiched like a wedge between the inclined surface 19a and the lower surface (abutted surface) of the upper plate portion 5, so that the contact portion 27 and the upper plate portion 5 are separated. A force along the z-direction and a frictional force along the x-direction act between them. Therefore, as in the first embodiment described above, it is possible to increase the sliding resistance (first sliding resistance) when moving the upper rail 2 toward the front of the vehicle.

The lever 36 in this modified example corresponds to a part of the “adjustment mechanism” for adjusting the sliding resistance of the upper rail 2 with respect to the lower rail 1 . As described above, the adjustment mechanism is configured to change the sliding resistance based on the user's manipulation of the lever 36 .

In the first and second embodiments described above, a sensor for detecting the inclination of the seat slide devices 100, 100A may be incorporated, and the sliding of the upper rails 2 may be determined according to the magnitude of the inclination detected by this sensor. Resistance may be dynamically adjusted. For example, when a sensor detects that the inclination of the seat slide device 100, 100A has increased while the passenger is seated, the electric actuator causes the transmission portion 21c to swing counterclockwise, causing the slider 26 on the rear side of the vehicle to swing. The contact portion 27 may be further inserted between the inclined surface 19 a and the lower surface of the upper plate portion 5 . Even with such a configuration, the sliding resistance of the upper rail 2 can be appropriately increased.

Further, for example, when the inclination of the seat slide device 100, 100A exceeds a predetermined threshold when the occupant is not seated, control may be performed to increase the sliding resistance of the upper rails 2. For this purpose, for example, the amount of pulling of the wire 24 is reduced by an electric actuator or the like, and the contact portion 27 is positioned between the inclined surface 19a and the lower surface (abutted surface) of the upper plate portion 5 like a wedge. It is assumed that it will be sandwiched.

The other end of the wire 24 is connected to a handle (the handle 212 or the second handle 322) that can be operated by the occupant, and the amount by which the wire 24 is pulled by the occupant not seated on the seat by operating the handle, that is, the upper rail It may be configured such that the sliding resistance of the two can be dynamically adjusted. As previously mentioned, in this case the seat locking mechanism 231 is in the locked state, the seat back and seat cushion are not folded against each other, and the seat has established a normal posture, but in such a case Also, it is possible to dynamically adjust the sliding resistance when the seat is seated and when the seat is not seated by the passenger's operation. In the first embodiment, the other end of the wire 24 is connected to the seat unlock lever 60, and the seat unlock lever 60 is connected to the steering wheel 212 by the wire 62. As shown in FIG. With such a structure, when the handle 212 is moved from the first unlocked position to the second unlocked position, the seat lock mechanism 231 is unlocked while the slide lock mechanism 13 remains unlocked. Also, in the second embodiment, the other end of the wire 24 is connected to the seat unlock lever 60 , and the seat unlock lever 60 is connected to the second handle 322 by a wire 327 . With such a structure, when the second handle 322 is operated, the slide lock mechanism is released and the seat lock mechanism 231 is released.

Further, for example, the seat slide device 100B of the third modification may incorporate a sensor that detects the sinking of the seat when the passenger is seated on the seat. In this modification, the lever 36 is operated by an electric actuator or the like in accordance with the seating of the occupant detected by the sensor, whereby the shaft portion 32a of the swing member 32 is moved from the first region of the transmission member 34 to the second region. region, and the first sliding resistance may be set in the seat slide device 100B. Thus, the seat slide device 100B may automatically switch between sitting and non-sitting.

In the modification of the second modification of the seat slide device 100A described with reference to FIG. 15, the rotation of the second lever 21 causes the front and rear contact portions 27 to move away from each other. At this time, if the timing at which the contact portion 27 on the front side is pressed against the upper plate portion 5 and the timing at which the contact portion 27 on the rear side is pressed against the upper plate portion 5 are at the same time, the seat is slid. can be changed to a size as designed.

However, if the above timings are different from each other due to, for example, a dimensional error of the parts, at the stage where one of the contact portions 27 is first pressed against the upper plate portion 5, the respective contact portions 27 will be in a state where it can no longer be displaced. That is, only one contact portion 27 is pressed against the upper plate portion 5 , while the other contact portion 27 is not pressed against the upper plate portion 5 . In such a state, the sliding resistance when sliding the seat becomes smaller than the designed value.

As a configuration example for solving this problem, a seat slide device 100C according to a fourth modified example of the present invention will be described. FIG. 19 is a diagram schematically showing the internal structure of a seat slide device 100C according to a fourth modification. Differences from the modified example of the seat slide device 100A shown in FIG. 15 will be mainly described below, and descriptions of common points with the modified example will be omitted as appropriate.

In FIG. 19, the lower surface of the upper plate portion 5 is denoted by reference numeral 5a. Below, this lower surface is referred to as "lower surface 5a". In FIG. 12, the outer shapes of the locking member 14 and the roller 12 are indicated by dotted lines in order to avoid complicating the illustration.

In this embodiment, similarly to the modified example shown in FIG. 15, the upper surface of each guide portion 19 is formed with an inclined surface 19a. Specifically, the inclined surface 19a formed in the guide portion 19 on the front side is inclined so as to be further away from the lower surface 5a toward the front side. In addition, the inclined surface 19a formed in the guide portion 19 on the rear side is inclined so as to approach the lower surface 5a toward the rear side.

Also in the fourth modification, the respective contact portions 27 arranged on the front side and the rear side of the vehicle are members held by the upper rail 2 and used to increase sliding resistance. 5) and the upper rail 2 (guide portion 19). The contact portion 27 arranged on the front side corresponds to the "first wedge member" in this embodiment. Further, the abutment portion 27 arranged at a position on the rear side of the first wedge member corresponds to the "second wedge member" in the present embodiment.

In the fourth modification, instead of the pair of sliders 26, 26, a first slider 260 and a second slider 270 are provided. The first slider 260 is a member that supports the contact portion 27 on the front side. The second slider 270 is a member that supports the contact portion 27 on the rear side.

The first slider 260 and the second slider 270 move the respective contact portions 27 in the same predetermined direction (specifically, the -x direction) so that the contact portions 27 and the lower rail 1 (lower surface 5a) move. It can be said that it is a member that increases the sliding resistance by increasing the working frictional force. The first slider 260 arranged on the front side moves the first wedge member in the -x direction and increases the frictional force acting between the first wedge member and the lower rail (lower surface 5a) to reduce the sliding resistance. It corresponds to the "first support member" for increasing. Further, the second slider 270, which is arranged at a position behind the first support member, moves the second wedge member in the -x direction to move the second wedge member between the second wedge member and the lower rail (lower surface 5a). It corresponds to the "second supporting member" for increasing the sliding resistance by increasing the working frictional force.

Specific configurations of the first slider 260 and the second slider 270 will be described with reference to FIGS. 20 to 22. FIG. FIG. 20 is a perspective view of the first slider 260 and the second slider 270 assembled together, viewed from below. FIG. 21 is an exploded view thereof. FIG. 22 is a perspective view of the second slider 270 viewed from above.

The first slider 260 has a linear portion 261 formed like a bar. The linear portion 261 is formed so that the cross section perpendicular to the longitudinal direction thereof has a rectangular outer shape. A contact portion 27 similar to that described with reference to FIG. 5 is formed at the end portion on the x-direction side of the straight portion 261 . A support portion 265 is formed at the end of the straight portion 261 on the −x direction side. The support portion 265 is a portion that is rotatably supported with respect to the lower end portion of the lower arm portion 21b of the second lever 21, as shown in FIG.

A concave portion 263 recessed in the z direction is formed on the surface of the linear portion 261 on the −z direction side. As shown in FIG. 21, the concave portion 263 is formed in the portion of the support portion 265 on the −x direction side. A partition plate 262 is formed at the end of the concave portion 263 on the x-direction side. Moreover, a partition plate 264 is formed at a position that becomes an end portion of the concave portion 263 on the -x direction side. Both partition plates 262 and 264 are formed in a flat plate shape perpendicular to the x-axis.

As shown in FIG. 22 , the second slider 270 has an intermediate portion 271 , a pair of horizontal arms 272 and a pair of vertical arms 273 . The intermediate portion 271 is the central portion of the second slider 270 in the y direction. A front plate 2711 and a rear plate 2712 are formed in the intermediate portion 271 . The front plate 2711 is formed so as to protrude in the z-direction at a position of the intermediate portion 271 that is the end in the x-direction. The rear plate 2712 is formed so as to protrude in the z direction at a position of the intermediate portion 271 that is the end on the −x direction side. Both the front plate 2711 and the rear plate 2712 are formed in a flat plate shape perpendicular to the x-axis.

A pair of horizontal arms 272 are portions formed to extend from the lower end of the intermediate portion 271 in the -y direction and the y direction, respectively. Each horizontal arm 272 is formed in a flat plate shape perpendicular to the z-axis.

A pair of vertical arms 273 are portions formed so as to extend from the tip of each horizontal arm 272 in the z direction. Each vertical arm 273 is formed like a flat plate perpendicular to the y-axis. Also, each vertical arm 273 extends further toward the -x direction side than the rear plate 2712 . A contact portion 27 is formed at a position of each vertical arm 273 that is the end portion on the -x direction side. Unlike the configuration shown in FIG. 5, the contact portion 27 does not have an intermediate portion 27a and has only an arm portion 27b (the intermediate portion 271 of this embodiment is the intermediate portion 271 shown in FIG. 5). It can also be said that it corresponds to the part 27a).

As shown in FIGS. 20 and 21, when the first slider 260 and the second slider 270 are assembled together, the intermediate portion 271 of the second slider 270 is positioned against the concave portion 263 of the first slider 260. is inserted from below. The second slider 270 can move along the x-axis with respect to the first slider 260 with the intermediate portion 271 inserted into the recess 263 as described above.

A coil spring 280 is arranged in the recess 263 . The coil spring 280 has one end in contact with the partition plate 262 of the first slider 260 and the other end in contact with the front plate 2711 of the second slider 270 . The coil spring 280 applies force to the partition plate 262 and the front plate 2711 in such a direction as to push them apart along the x-axis. In other words, the coil spring 280 biases the first slider 260 in the x direction and biases the second slider 270 in the -x direction. When no external force is applied to each of the first slider 260 and the second slider 270 (that is, the state shown in FIG. 20), the rear plate 2712 of the second slider 270 is attached to the partition plate 264 of the first slider 260. It is in a state of being pressed against it.

In this way, the coil spring 280 is provided between the first slider 260 (first support member) and the second slider 270 (second support member), and applies force to widen the gap between the two. there is Such a coil spring 280 corresponds to the "elastic member" in this embodiment. Instead of the coil spring 280, another type of elastic member may be used.

Next, the operation of the seat slide device 100C will be described. In FIG. 19, the locked state is established by the slide lock mechanism 13 . Also, the wire 24 is pulled toward the rear of the vehicle, and the second lever 21 swings clockwise around the rotation shaft 22 . As a result, the first slider 260 and the abutment portion 27 at the tip thereof are moved in the x direction, and a gap is formed between the abutment portion 27 and the lower surface 5 a of the upper plate portion 5 .

Also, the rear plate 2712 and the partition plate 264 are in contact with each other. Therefore, the second slider 270 and the contact portion 27 at the tip thereof move in the -x direction as the second lever 21 swings clockwise as described above. A gap is also formed between the lower surface 5 a of the upper plate portion 5 and the lower surface 5 a of the upper plate portion 5 .

As described above, in the state shown in FIG. 19, neither the front side contact portion 27 nor the rear side contact portion 27 is in contact with the lower surface 5a. Therefore, both the sliding resistance (third sliding resistance) when moving the seat forward and the sliding resistance (fourth sliding resistance) when moving the seat rearward become small. ing.

When the force pulling the wire 24 toward the rear side is weakened from the state shown in FIG. move. FIG. 23 schematically shows intermediate stages. In the state of FIG. 23, the first slider 260 and the second slider 270 move in the -x direction along with the rocking motion of the second lever 21 . As a result, the rear contact portion 27 provided on the second slider 270 is sandwiched between the inclined surface 19a and the lower surface 5a of the upper plate portion 5 like a wedge.

On the other hand, in the state immediately after the contact portion 27 on the rear side comes into contact with the lower surface 5a (that is, the state in FIG. 23), the contact portion 27 on the front side has not yet contacted the lower surface 5a. Thus, in the seat slide device 100C, the length of the linear portion 261 and the like are designed so that the contact portion 27 on the rear side comes into contact with the lower surface 5a first.

When the force pulling the wire 24 toward the rear is further weakened from the state of FIG. 23, the elastic restoring force of the coil spring 23 causes the second lever 21 to swing further counterclockwise. At this time, since the contact portion 27 on the rear side is already in contact with the lower surface 5a, the second slider 270 does not move further in the -x direction. In other words, the position of the second slider 270 along the x-axis does not change when the state of FIG. 23 shifts to the state of FIG. 24, which will be described later.

On the other hand, the first slider 260 moves further in the -x direction while resisting the elastic restoring force of the coil spring 280 . At this time, the first slider 260 moves relative to the second slider 270 (which is stationary). In other words, the intermediate portion 271 of the second slider 270 relatively slides inside the recess 263 . Finally, as shown in FIG. 24, the front contact portion 27 provided on the first slider 260 is sandwiched between the inclined surface 19a and the lower surface 5a of the upper plate portion 5 like a wedge. state.

As described above, in the present embodiment, when the second lever 21 rotates counterclockwise, the contact portion 27 on the rear side is brought into contact with the lower surface 5a first. The portion 27 can also be brought into contact with the lower surface 5a. Even if there is an error in the dimensions of the first slider 260 or the like, the respective contact portions 27 can be reliably brought into contact with the lower surface 5a. can be made as designed.

The second lever 21 moves the first slider 260, which is the first supporting member, in the -x direction, thereby increasing sliding resistance. Such a second lever 21 corresponds to the "lever member" in this embodiment.

In this embodiment, the first slider 260 that supports the contact portion 27 on the front side and the second slider 270 that supports the contact portion 27 on the rear side are configured as separate parts. Instead of such a mode, a mode in which the first slider portion 310 and the second slider portion 320 are integrally formed as in a fifth modification shown in FIG. 25 may be employed. The first slider portion 310 is a portion corresponding to the "first support member" in this modified example. The second slider portion 320 is a portion corresponding to the "second support member" in this modified example.

In this modified example, the first slider portion 310 and the second slider portion 320 are connected by the spring portion 330, and the first slider portion 310, the second slider portion 320, and the spring portion 330 are integrated. formed as parts. The spring portion 330 is a portion corresponding to the "elastic member" in this modified example.

A support portion 311 is formed in a portion of the first slider portion 310 near the spring portion 330 . The support portion 311 is a portion that is rotatably supported by the lower end portion of the lower arm portion 21b of the second lever 21, like the support portion 265 of the fourth modification (FIG. 19).

In such a configuration, in addition to the same effects as those described for the fourth modified example, there is also an effect that the number of parts for configuring the first support member and the second support member can be reduced.

Points to note regarding the technology described in the embodiment will be described. The interlocking mechanism between the handle operated by the user, the slide unlock lever 50, and the seat unlock lever 60 is not limited to the embodiment.

When the seat lock mechanism 231 is released, the seat back becomes rotatable. The seat back is biased forward, and may be configured to fold forward when the seat lock mechanism 231 is released.

The seat slide device 100 has the following features. The seat slide device 100 includes a first wedge member (contact portion 27 interlocked with first lever 20), a first support member (slider 26 interlocked with first lever 20), a second wedge member (second lever 21) and a second support member (a slider 26 that interlocks with the second lever 21). The first wedge member is a member held by the upper rail 2 and sandwiched between the lower rail 1 and the upper rail 2 to increase sliding resistance. The first support member increases sliding resistance by moving the first wedge member forward of the vehicle and increasing the frictional force acting between the first wedge member and the lower rail 1 . The second wedge member is held by the upper rail 2 at a position behind the first wedge member, and is sandwiched between the lower rail 1 and the upper rail 2 to increase sliding resistance. The second support member increases the sliding resistance by moving the second wedge member toward the vehicle rear side and increasing the frictional force acting between the second wedge member and the lower rail 1 .

Although specific examples of the present invention have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or in the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims as of the filing. In addition, the techniques exemplified in this specification or drawings can simultaneously achieve a plurality of purposes, and achieving one of them has technical utility in itself.

1: Lower rail 2: Upper rail 3: Bottom plate 4: Side plate 5: Upper plate 6: Mouth plate 7: Opening 8: Storage space 9: Metal plate 10: Side plate 11: Arm plate 12: Roller 13: Slide Lock mechanism 14, 114: Lock member 14a: Claw portion 14b: Operation portion 15: Bracket 16: Rotation shaft 18: Coil spring 19: Guide portion 19a: Inclined surfaces 20, 120: First levers 20a, 21a, 120a, 121a: Upper arm portions 20b, 21b, 120b, 121b: Lower arm portions 20c, 21c, 120c, 121c: Transmission portion 21: Second lever 22: Rotating shafts 23, 123: Coil spring 24: Wire 25: Support shaft 26: Slider 27: Contact portion 27a: intermediate portion 27b: arm portion 28: through hole 50: slide unlock lever 51: push-down pins 52, 61, 213, 313, 323: rotary shaft 54: sub-lever 55: connecting rod 60: seat unlock lever 62, 315, 325, 327: Wires 63, 326, 328, 329: Pulley 100: Seat slide device 124: Connecting rod 129: Stoppers 200, 300: Seats 210, 310: Seat cushion 212: Handle 214: Body portion 215, 314, 324: lever portion 216: elongated holes 220, 320: seat back 230: hinge 231: seat lock mechanism 312: first handle 322: second handle

Claims (4)

seat cushion and
a lower rail fixed to the floor of the vehicle;
an upper rail fixed to the seat cushion and slidably supported in the longitudinal direction of the vehicle with respect to the lower rail;
a slide lock mechanism that locks the upper rail with respect to the lower rail;
a handle that releases the slide lock mechanism and can switch between a lock position, a first unlock position, and a second unlock position in this order;
and
When the handle is moved from the lock position to the first unlock position, the slide lock mechanism is released, and a first slide resistance is set as a slide resistance for forward movement of the upper rail,
A vehicle seat, wherein a low sliding resistance smaller than the first sliding resistance is set as the sliding resistance when the handle is moved from the first unlocked position to the second unlocked position. a seat back rotatably supported with respect to the seat cushion;
a seat lock mechanism that locks the seat cushion and the seat back in a sitting posture;
a seat unlock lever for releasing the seat lock mechanism;
a wire for interlocking the seat unlock lever and the handle;
is further equipped with
The handle is rotatable and has an elongated slot in the direction of rotation,
one end of the wire is engaged with the long hole so as to be swingable in its longitudinal direction, and the other end is connected to the seat unlock lever;
When the handle is moved from the locked position to the first unlocked position, one end of the wire moves from one end of the elongated hole to the other end, and the seat lock mechanism maintains the locked state without pulling the wire. The slide lock mechanism is released while the
When the handle is moved from the first unlocked position to the second unlocked position, the seat lock lever is pulled through the wire while the slide lock mechanism is held unlocked, thereby releasing the seat lock mechanism. The vehicle seat according to claim 1, wherein the vehicle seat is 3. The vehicle seat according to claim 1, wherein a second sliding resistance smaller than said first sliding resistance is set as a sliding resistance for rearward movement of said upper rail in said first unlocked position. a first wedge member held by the upper rail, tapered toward the front of the vehicle, and sandwiched between the lower rail and the upper rail;
a second wedge member held by the upper rail, tapered toward the rear of the vehicle, and sandwiched between the lower rail and the upper rail;
a first interlocking mechanism for moving the first wedge member rearward of the vehicle when the handle is moved from the locked position to the first unlocked position;
a second interlocking mechanism for moving the second wedge member forward of the vehicle when the handle is moved from the first unlocked position to the second unlocked position;
further comprising
The vehicle seat according to any one of claims 1 to 3 .

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