JP2016005941A - Slide device of vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide device of a vehicle seat performing an unlocking motion of sliding of an upper rail to a lower rail and a slide motion of the upper rail to the lower rail after the unlocking with driving force by a single motor.SOLUTION: A slide device 5 of a vehicle seat includes: a lower rail 10 assembled to the side of a vehicle floor 1a; an upper rail 20 assembled to the side of a vehicle seat so as to be slidable with respect to the lower rail 10; and a lock mechanism R which locks slide of the upper rail 20 with respect to the lower rail 10. The slide device 5 is provided with a motor-driven mechanism M in which unlock of the lock mechanism R and slide of the upper rail 20 with respect to the lower rail 10 after the unlocking, can be performed with a single motor.

Description

  The present invention relates to a vehicle seat slide device.

  2. Description of the Related Art Conventionally, for example, in a seat slide device for an automobile or the like, a manual type device that can slide an upper rail with respect to a lower rail by human power is already known. In contrast to this, a power type that can slide the upper rail relative to the lower rail by relatively moving the screw and the nut by the driving force of the motor is already known. Here, the following Patent Document 1 discloses a technique that can slide an upper rail relative to a lower rail by winding a wire wound around a winding member by a driving force of a motor in a power type sliding device. Yes. Thereby, even if the lower rail is a long slide such as a long one, there is no need to lengthen the screw. Therefore, it is possible to prevent the generation of abnormal noise from the nut due to the screw shaft misalignment.

Japanese Patent No. 4016107

  However, in the technique of Patent Document 1 described above, the operation of locking the slide of the upper rail with respect to the lower rail is also performed by a driving force of a motor different from the motor that winds the winding member. For this reason, two motors are required, and a reduction in the number of parts has been demanded.

  An object of the present invention is to solve such a problem. An object of the present invention is to perform an unlocking operation of the upper rail slide with respect to the lower rail and an upper rail sliding operation with respect to the lower rail after the unlocking of one motor. It is an object of the present invention to provide a vehicle seat slide device that can be implemented with a driving force.

  The present invention is for achieving the above object, and is configured as follows. According to a first aspect of the present invention, there is provided a lower rail assembled to the vehicle floor, an upper rail assembled to the vehicle seat so as to be slidable with respect to the lower rail, and a lock mechanism capable of locking the slide of the upper rail with respect to the lower rail. A vehicle seat slide device provided. This sliding device is provided with an electric mechanism that can perform unlocking of the locking mechanism and sliding of the upper rail with respect to the lower rail after the unlocking with a single motor.

  According to the first aspect of the invention, unlike the prior art, two motors are not required, so the number of parts can be reduced.

  The invention according to claim 2 is the vehicle seat sliding device according to claim 1, wherein the electric mechanism includes one motor, a screw that can be rotated by driving of the motor, and a screw. A nut to be screwed, a winding member that can slidably receive the nut and wind the wire, and a lock release block that can release the lock mechanism when the nut slides are provided. When the nut slides due to the rotation of the screw driven by the motor, unlocking of the lock mechanism starts. When the slid nut presses the inner surface of the winding member, the winding member winds the wire, so that the upper rail starts to slide relative to the lower rail. By the time the slide starts, unlocking of the locking mechanism is completed.

  According to the invention of claim 2, claim 1 can be implemented with a simple configuration.

  Further, the invention described in claim 3 is the vehicle seat slide device according to claim 2, wherein when the motor is stopped, the motor stops and the upper rail slides relative to the lower rail. . As soon as this motor stops, the reverse drive of this motor begins. When the reverse drive starts, the nut slides so as to return to the state before the slide. The lock mechanism is returned to the locked state along with the slide of the nut.

  According to the invention of claim 3, the lock mechanism can be unlocked smoothly even at the time of the next slide after stopping.

  According to a fourth aspect of the present invention, there is provided the vehicle seat slide device according to the third aspect, wherein when the lock mechanism is returned to the locked state, the lock claw of the lock mechanism is brought into a half-locked state. Regulates unlocking block and nut return. For this reason, when the roller starts to rotate together with the nut and the upper rail slides with respect to the lower rail as the roller rotates, the lock pawl is fitted into the lower rail.

  According to invention of Claim 4, even if a half-lock state arises, it can eliminate.

1 is an overall perspective view of a seat according to an embodiment of the present invention. It is the figure which expanded only the slide apparatus of the sheet | seat of FIG. It is a figure which shows the principal part of the slide apparatus of FIG. It is a cross-sectional schematic diagram of the IV-IV line of FIG. FIG. 4 is an exploded view of FIG. 3. In the slide apparatus of FIG. 2, it is a longitudinal cross-sectional schematic diagram explaining the slide operation | movement by power, and has shown the state before a slide. FIG. 6 shows a state where the forward switch is operated. FIG. 7 shows a state where the forward switch is further operated and the lock claw is unlocked. In the slide device of FIG. 2, it is a longitudinal cross-sectional schematic diagram explaining the slide operation by a manual, and has shown the state before a slide. FIG. 9 shows a state where the lock claw is unlocked.

  Hereinafter, the form for implementing this invention is demonstrated using FIGS. In the following description, as an example of “vehicle seat”, a “second-row seat (hereinafter simply referred to as“ seat 2 ”) of a vehicle (for example, minivan 1) having three rows of seats” is used. I will explain. In the following description, the terms “up”, “down”, “front”, “rear”, “left”, and “right” refer to the upper, lower, front, rear, left, and right directions described in the above-described drawings, that is, the inside of the minivan 1. The upper, lower, front, rear, left and right directions when the seat 2 in the state is used as a reference are shown.

  As shown in FIGS. 1 and 4, a groove 1 b is formed in the floor 1 a of the minivan 1 along the front-rear direction in the middle of left and right lower rails 10, 10 described later. The concave groove 1b is covered with a carpet or the like (not shown), and a slit 1c is formed in the carpet so that a wire 86 described later can pass therethrough. Brackets 88 and 88 for securing one end 86a and the other end 86b of a wire 86, which will be described later, are fixed to the front side and the rear side of the concave groove 1b, respectively.

  First, the structure of the sheet | seat 2 is demonstrated with reference to FIGS. The seat 2 includes a seat cushion 3 having a slide lever 3a on its outer side and a seat back 4 having a walk-in lever 4a on its outer shoulder. The seat 2 is configured such that the seat cushion 3 can be slid back and forth with respect to the floor 1a by the slide device 5.

  A walk-in cable 120 is hung on the walk-in lever 4a. As is apparent from FIG. 2, the walk-in cable 120 is divided into a first walk-in cable 122 and a second walk-in cable 124 at the tip side. Among these, the inner cable 122a of the first walk-in cable 122 is hung on the left lever 102 described later. Further, the inner cable 124a of the second walk-in cable 124 is hung on a slider 56 described later.

  Similarly, a slide cable 130 is hooked on the slide lever 3a. The slide cable 130 is bifurcated into a first slide cable 132 and a second slide cable 134 on the distal end side. Among these, the inner cable 132a of the first slide cable 132 is hung on the right lever 104 described later. Further, the inner cable 134a of the second slide cable 134 is hung on a slider 56 described later.

  Here, the slide device 5 described above will be described in detail with reference to FIGS. 1 to 6. The slide device 5 mainly includes left and right lower rails 10 and 10, left and right upper rails 20 and 20, and left and right legs 30. , 30, an electric mechanism M, a lock mechanism R, and a clutch mechanism C. Hereinafter, the left and right lower rails 10 and 10, the left and right upper rails 20 and 20, the left and right legs 30 and 30, the electric mechanism M, the lock mechanism R, and the clutch mechanism C will be described individually.

  First, the lower rail 10 will be described. The lower rail 10 is embedded so as to form a pair on the left and right along the front-rear direction of the floor 1 a of the minivan 1. As is clear from FIG. 1, the lower rail 10 is formed long so that the seat 2 can be slid greatly. The upper surface of the lower rail 10 is covered with a resin shield 12.

  Next, the upper rail 20 will be described. The upper rail 20 is formed to be slidable with respect to the lower rail 10. Therefore, the upper rail 20 is also formed to form a pair on the left and right. A bracket 22 for pivotally attaching a lock claw 24 described later is assembled to the upper rail 20.

  Next, the leg 30 will be described. The leg 30 is for assembling a side frame (not shown) of the cushion frame of the seat cushion 3 to the upper rail 20. Therefore, the leg 30 is fixed to the upper rail 20 with a bolt or the like (not shown). Since the side frames of the cushion frame of the seat cushion 3 are formed to form a pair on the left and right, the legs 30 are also formed to form a pair on the left and right.

  Further, a thin plate-like main bracket 40 is fixed to the left and right legs 30 and 30 so as to bridge each other. Three sub brackets (a substantially U-shaped first sub bracket 42, a second sub bracket 44, and a substantially U-shaped third sub bracket 46) are fixed to the main bracket 40. Two pulleys (a front pulley 44a and a rear pulley 44b) are hooked on the second sub bracket 44 on the front and rear sides thereof.

  On the inner surface of the third sub-bracket 46, four guides 46a (only three are shown in FIG. 5) are formed that sandwich a lock release block 90, which will be described later, and restrict the back and forth movement. Thereby, the raising / lowering of the lock release block 90 with respect to this 3rd sub bracket 46 can be guided. In addition, a detection switch 46b capable of detecting the third arm 98 of the unlocking block 90 is assembled to the third sub bracket 46. Thereby, it can be detected that the unlocking block 90 is raised with respect to the third sub bracket 46.

  Next, the electric mechanism M will be described (see FIGS. 3 and 5 to 6). The electric mechanism M mainly includes a geared motor 50, a connecting member 60, a slide member 70, a roller 80, and an unlocking block 90.

  The geared motor 50 is a sub-assembly that includes a motor 50a and a speed reducer 50b that decelerates rotation of a rotating shaft (not shown) of the motor 50a. One end side of the drive shaft 52 of the speed reducer 50b to which the rotation of the rotation shaft of the motor 50a is transmitted forms a round shaft 52a (see FIG. 6). The base end side of the round shaft 52a forms a hexagonal shaft 52b. The other end side of the drive shaft 52 is supported by a bearing 54 described later. The geared motor 50 is fixed to the first sub bracket 42 via screws (not shown).

  Therefore, the drive shaft 52 of the geared motor 50 is configured to bridge the substantially U-shape of the first sub bracket 42. The geared motor 50 is electrically connected to a control device (not shown) such as an ECU. The control device is electrically connected to a slide forward switch 3b, a slide backward switch 3c, a slide stop switch 3d, and the detection switch 46b described above (see FIG. 1).

  The connecting member 60 includes a cylindrical member 62 into which the drive shaft 52 of the geared motor 50 is inserted, and a screw 64 that is integral with the cylindrical member 62. The cylindrical member 62 has a circular cross section (circular inner surface 62a) and a hexagon (hexagon inner surface 62b) corresponding to the round shaft 52a and the hexagon shaft 52b of the drive shaft 52 of the geared motor 50. Is formed. The connecting member 60 is pivotally attached to the second sub bracket 44.

  The slide member 70 is configured by assembling four nuts (not shown) from a nut 72 screwed into the screw 64, a shaft 74 integrated with the nut 72, and the slider 76. ing. The nut 72 and the shaft 74 are formed with umbrellas 72a and 74a that can be fitted into a long groove 80a of a roller 80 described later. The slider 76 is also formed so as to be able to fit into the long groove 80a. Accordingly, the umbrellas 72a and 74a and the slider 76 can slide in the long groove 80a.

  The shaft 74 penetrates the block 78 in a rotatable manner. The block 78 is restricted from moving in the axial direction with respect to the shaft 74 via a pair of washers 78a. The shaft 74 is pivotally attached to the third sub bracket 46 so as to bridge the substantially U-shape of the third sub bracket 46.

  The roller 80 is configured by combining a first half body 82 and a second half body 84 via two screws (not shown). The roller 80 configured as described above has a key-like long groove 80a formed therein. A groove 80 b is formed on the outer peripheral surface of the roller 80. A wire 86 is wound around the groove 80b. One end 86a of the wire 86 is hooked to the front bracket 88 via the front pulley 44a via a screw member 88a and a nut member 88b which is screwed into the screw member 88a.

  Thereby, when the degree of screwing of the nut member 88b is adjusted, the tension of the wire 86 can also be adjusted. The same applies to the other end 86 b of the wire 86. Since the wire 86 is wound in this manner, for example, when the roller 80 is rotated forward, the one end 86a side of the wire 86 can be wound.

  Conversely, when the roller 80 is reversed, the other end 86b of the wire 86 can be wound. The roller 80 is configured such that the umbrellas 72a and 74a and the slider 76 of the slide member 70 are accommodated in the long groove 80a, and as described above, the first half 82 and the second half. 84 is assembled via two screws.

  The unlocking block 90 is constituted by a plate in which a V-shaped guide groove 92 is formed so as to penetrate the plate thickness direction. In the guide groove 92, a recess 92a is formed at a portion facing the V-shaped bent portion. Further, the unlocking block 90 is formed with a first arm 94 projecting up and down toward the right side, a second arm 96, and a third arm 98 projecting toward the left side. ing.

  Next, the lock mechanism R will be described. The lock mechanism R is mainly composed of lock claws 24 and 24 and a rod 100 which are paired on the left and right.

  The left and right lock claws 24, 24 are pivotally attached to the brackets 22, 22 fixed to the left and right upper rails 20, 20 while being urged in the lock direction by a spring member (not shown). . As a result, the left and right lock claws 24, 24 are always fitted in the lock holes of the left and right lower rails 10, 10 and the lock holes of the left and right upper rails (locked state). The slides of the left and right upper rails 20, 20 can be locked with respect to the lower rails 10, 10.

  The left lock claw 24 is pivotally attached to the bracket 22 of the left upper rail 20 so that the arm 24a is pressed by the arm 102a of the rotated left lever 102. Further, the right lock claw 24 is also pivotally attached to the bracket 22 of the right upper rail 20 so that the arm 24a is pressed by the first arm 94 of the unlocking block 90 which has been lowered.

  The rod 100 is for synchronizing the movements of the left and right lock claws 24, 24 described above. Left and right levers 102 and 104 are fixed to both ends of the rod 100. The left lever 102 is urged by a torsion spring 106 so that the arm 104a of the right lever 104 presses the first arm 94 of the unlocking block 90 to raise. A block 110 having an arm 112 is fixed to the left side of the rod 100. Both ends of the rod 100 are pivotally attached to the first sub bracket 42 and the bracket 32 fixed to the right leg 30.

  Finally, the clutch mechanism C will be described. The clutch mechanism C is mainly composed of the drive shaft 52 of the geared motor 50 described above, the connecting member 60 described above, and the slider 56. Since the drive shaft 52 and the connecting member 60 of the geared motor 50 have already been described, only the slider 56 will be described here.

  The slider 56 is fixed to the bearing 54 of the geared motor 50 already described. Note that two tension springs 58 and 58 are hooked between the slider 56 and the first sub bracket 42. For this reason, when the inner cable 124a of the second walk-in cable 124 or the inner cable 134a of the second slide cable 134 is pulled, the slider 56 works together with the slider 56 against the urging force of the two tension springs 58 and 58. The drive shaft 52 of the geared motor 50 is pulled.

  The slide device 5 includes the left and right lower rails 10 and 10, the left and right upper rails 20 and 20, the left and right legs 30 and 30, the electric mechanism M, the lock mechanism R, and the clutch mechanism C.

  Subsequently, the operation of the above-described slide device 5 will be described with reference to FIGS. In the description of this operation, the power sliding operation and the manual sliding operation will be described separately.

  First, the slide operation by power will be described with reference to FIGS. For example, when the forward switch 3b is operated from the state before the slide shown in FIG. 6, the rotation shaft of the motor 50a rotates, so that the drive shaft 52 of the speed reducer 50b also rotates. At this time, the hexagonal shaft 52b of the drive shaft 52 and the hexagonal inner surface 62b of the cylindrical member 62 of the connecting member 60 are engaged with each other (in a mechanically connected state). 64 rotates.

  Therefore, the nut 72 that is screwed into the screw 64 slides to the right, for example (see FIG. 7). Accordingly, since the block 78 slides to the right together with the nut 72 via the shaft 74, the guide pin 90a also slides to the right on the slope on the right side of the guide groove 92 of the lock release block 90.

  Then, the slide lowers the unlocking block 90 against the urging force of the torsion spring 106, so that the first arm 94 of the lowered unlocking block 90 moves to the arm 104a of the right lever 104 and the right locking claw. 24 arms 24a are pressed against each other. As a result, the right lever 104 and the right lock claw 24 rotate, so that the right lock claw 24 is unlocked against the urging force, and the left lock claw 24 is also synchronized via the rod 100. To unlock against the biasing force.

  When the forward switch 3b is continuously operated from the state shown in FIG. 7, the nut 72 screwed into the screw 64 further slides to the right. Then, since the unlocking block 90 further descends against the biasing force of the torsion spring 106, the left and right lock claws 24, 24 are switched to the unlocked state against the biasing force (see FIG. 8). At the same time or immediately before this switching, the umbrella 74a of the shaft 74 fixed to the nut 72 presses the inner surface of the long groove 80a of the roller 80, so that the roller 80 rotates (for example, forward rotation) with this pressing. start.

  Accordingly, since the roller 80 winds up the one end 86 a side of the wire 86, the left and right upper rails 20, 20 slide forward with respect to the left and right lower rails 10, 10. That is, the seat 2 moves forward. Eventually, when the seat 2 is advanced to a desired position, the stop switch 3d is operated. Then, since the rotating shaft of the motor 50a stops, the drive shaft 52 of the reduction gear 50b also stops. Thereby, since the rotation of the roller 80 is stopped, the sheet 2 that has been advanced stops.

  When the forward movement of the seat 2 is stopped, the rotation shaft of the motor 50a immediately reversely rotates according to the program of the control device, so that the drive shaft 52 of the speed reducer 50b also reversely rotates. As a result, the nut 72 slid to the right slides to the left so as to return to the state before the slide (see FIG. 7). Therefore, the unlocking block 90 is raised by the urging force of the torsion spring 106, and the left and right lock claws 24, 24 are also locked by the urging force (the ends of the left and right lock claws 24, 24 are in the left and right lower rails 10, 10). It begins to return to the state of being fitted in the lock holes and the lock holes of the left and right upper rails.

  Even when the nut 72 slides to the left as described above, the tension is applied to the wire 86, and the rotation of the roller 80 is prevented by this tension. Eventually, when the nut 72 is returned to the state before the slide, the lock release block 90 is also returned to the raised state. When the unlocking block 90 is returned in this way, the left and right lock claws 24, 24 are also returned to the locked state (see FIG. 6). When the unlocking block 90 is returned in this way, the guide pin 90a is also returned to the state before sliding to the right.

  When the detection switch 46b detects the third arm 98 of the unlocking block 90 returned to the raised state, the rotation shaft of the motor 50a stops, so the drive shaft 52 of the speed reducer 50b also stops. On the other hand, when the seat 2 is moved backward, the reverse switch 3d may be operated as described above. In this way, a sliding operation with power can be performed.

  Further, in the description of the sliding operation by the power described above, when the left and right lock claws 24, 24 start to return to the locked state by the urging force, the ends of the left and right lock claws 24, 24 are the lock holes of the left and right lower rails 10, 10. There are times when it is not possible to fit due to misalignment. There are times when a so-called half-lock state is reached.

  When this half-locked state occurs on the left side, the arm 112 of the block 110 returned by the urging force of the torsion spring 106 interferes with the arm 24 a of the left lock claw 24. As a result, the return of the right lever 104 is restricted, and the ascent of the lock release block 90 is restricted. At this time, since the guide pin 90a contacts the inclined surface 92b of the guide groove 92 of the unlocking block 90, the movement of the nut 72 is also restricted. Therefore, the rotation of the roller 80 together with the nut 72 starts. Therefore, the tip of the left lock claw 24 is fitted into the lock hole of the left lower rail 10. As a result, the half lock state generated on the left side can be eliminated.

  On the other hand, when this half-locked state occurs on the right side, the second arm 96 of the rising unlocking block 90 interferes with the arm 24a of the right lock claw 24. Thereby, the raise of the lock release block 90 will be controlled. Therefore, as described above, the guide pin 90a comes into contact with the inclined surface 92b of the guide groove 92 of the unlocking block 90, as in the case where the half-locked state occurs on the left side, and the movement of the nut 72 is also restricted. Become. Therefore, the rotation of the roller 80 together with the nut 72 starts. Therefore, the tip of the right lock claw 24 is fitted into the lock hole of the right lower rail 10. As a result, the half lock state that has occurred on the right side can be eliminated.

  Next, a manual slide operation will be described with reference to FIGS. When the slide lever 3a is operated from the state before the slide shown in FIG. 9, for example, the inner cable 132a of the first slide cable 132 and the inner cable 134a of the second slide cable 134 are pulled. Then, since the right lever 104 rotates against the urging force by pulling the inner cable 132a of the first slide cable 132, the arm 104a of the rotated right lever 104 becomes the arm of the right lock claw 24. Press 24a.

  At this time, since the left lever 102 also rotates together with the right lever 104, the arm 102a of the rotated left lever 102 also presses the arm 24a of the left lock claw 24. As a result, the left and right lock claws 24, 24 rotate at the same time, so that they are switched to the unlocked state (see FIG. 10). At this time, since the lock release block 90 is lowered by its own weight, the guide pin 90a is in a state of having escaped into the recess 92a of the guide groove 92.

  On the other hand, the slider 56 slides against the urging force of the tension springs 58, 58 due to the pulling of the inner cable 134 a of the second slide cable 134 performed simultaneously with this. As a result, the drive shaft 52 of the geared motor 50 slides with this slide. Therefore, the meshing (mechanical connection) between the hexagonal shaft 52b of the drive shaft 52 and the hexagonal inner surface 62b of the cylindrical member 62 of the connecting member 60 is eliminated.

  Therefore, the resistance generated between the left and right lower rails 10 and 10 and the left and right upper rails 20 and 20 is only these frictional resistances (sliding resistances). That is, there is no resistance between the motor 50a and the speed reducer 50b. When the seat 2 is moved forward (retracted) to a desired position, the operation of the slide lever 3a may be released. Then, the rotation of the left and right levers 102 and 104 is returned by the urging force of the torsion spring 106, and the left and right lock claws 24 and 24 are also returned to the locked state by the urging force acting on itself.

  On the other hand, at the same time, the slider 56 is also returned to the state before sliding by the urging force of the two tension springs 58, 58. Even if the walk-in lever 4a is operated, the same operation as described above can be performed. In this way, a manual slide operation can be performed.

  The slide device 5 according to the embodiment of the present invention is configured as described above. According to this configuration, the slide device 5 mainly includes the left and right lower rails 10 and 10, the left and right upper rails 20 and 20, the left and right legs 30 and 30, the electric mechanism M, the lock mechanism R, and the clutch mechanism C. It consists of and. The electric mechanism M is provided with a geared motor 50. The geared motor 50 includes a motor 50a and a speed reducer 50b that decelerates rotation of a rotating shaft (not shown) of the motor 50a. When the motor 50a is rotated, the left and right lock claws 24, 24 are unlocked. Thereafter, the left and right upper rails 20 and 20 slide relative to the left and right lower rails 10 and 10 by further rotation of the motor 50a. Therefore, this unlocking and sliding can be performed by one motor 50a. Therefore, unlike the prior art, two motors are not required, so the number of parts can be reduced.

  Further, according to this configuration, the electric mechanism M mainly includes the geared motor 50, the connecting member 60, the slide member 70, the roller 80, and the lock release block 90. The connecting member 60 includes a cylindrical member 62 into which the drive shaft 52 of the geared motor 50 is inserted, and a screw 64 that is integral with the cylindrical member 62. And if the rotating shaft of the motor 50a rotates, the screw 64 of the connection member 60 will rotate. As a result, the nut 72 that is screwed onto the screw 64 slides, and the unlocking of the left and right lock claws 24, 24 begins. Thereafter, when the slid nut 72 presses the inner surface of the long groove 80a of the roller 80, the roller 80 winds up the wire 86, so that the left and right upper rails 20, 20 slide relative to the left and right lower rails 10, 10. . Therefore, it can be implemented with a simple configuration.

  Further, according to this configuration, for example, when the stop switch 3d is operated after the seat 2 is advanced to a desired position, the rotation shaft of the motor 50a is stopped, so that the drive shaft 52 of the speed reducer 50b is also stopped. Thereby, since the rotation of the roller 80 is stopped, the sheet 2 that has been advanced stops. When the forward movement of the seat 2 is stopped, the rotation shaft of the motor 50a immediately reversely rotates according to the program of the control device, so that the drive shaft 52 of the speed reducer 50b also reversely rotates. As a result, the nut 72 slid to the right slides to the left so as to return to the state before the slide (see FIG. 7). Therefore, the unlocking block 90 is lifted by the urging force of the torsion spring 106, and the left and right lock claws 24, 24 are also locked by the urging force (the ends of the left and right lock claws 24, 24 are aligned with the left and right lower rails 10, 10). It begins to return to the state of being fitted in the lock holes and the lock holes of the left and right upper rails. Even when the nut 72 slides to the left as described above, the tension is applied to the wire 86, and the rotation of the roller 80 is prevented by this tension. Eventually, when the nut 72 is returned to the state before the slide, the lock release block 90 is also returned to the raised state. When the unlocking block 90 is returned in this way, the left and right lock claws 24, 24 are also returned to the locked state (see FIG. 6). When the unlocking block 90 is returned in this way, the guide pin 90a is also returned to the state before sliding to the right. Thus, since the guide pin 90a is also returned to the state before sliding, the lock mechanism R can be unlocked smoothly even during the next slide after stopping.

  Further, according to this configuration, when the half lock state occurs on the left side, the arm 112 of the block 110 returned by the urging force of the torsion spring 106 interferes with the arm 24 a of the left lock claw 24. As a result, the return of the right lever 104 is restricted, and the ascent of the lock release block 90 is restricted. Therefore, since the movement of the guide pin 90a and the nut 72 is also restricted, the rotation of the roller 80 together with the nut 72 starts. Therefore, the tip of the left lock claw 24 is fitted into the lock hole of the left lower rail 10. As a result, the half lock state generated on the left side can be eliminated. The same applies to the right side.

  The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.

  In the embodiment, “Minivan 1” has been described as an example of “vehicle seat”. However, the present invention is not limited to this, and the “vehicle seat” may be various vehicle seats such as “ship seat”, “plane seat”, “railway seat”, and the like. Absent.

  In the embodiment, the stop switch 3d is provided, and the stop switch 3d inputs the stop signal to the control device. However, the present invention is not limited to this, and the stop switch 3d may not be provided. In this case, the forward switch 3b is turned on only while the forward switch 3b is being operated. When the forward switch 3b is released, it is equivalent to operating the stop switch 3d. Of course, it goes without saying that the program of the control device is also configured to correspond to this. The same applies to the reverse switch 3c.

1 Minivan (vehicle)
1a Floor 2 seat (vehicle seat)
5 Slide device 50a Motor 10 Lower rail 20 Upper rail M Electric mechanism R Lock mechanism

Claims (4)

A lower rail assembled on the floor side of the vehicle,
An upper rail that is slidably mounted on the vehicle seat side with respect to the lower rail;
A vehicle seat slide device comprising: a lock mechanism capable of locking the slide of the upper rail with respect to the lower rail;
A vehicle seat slide device comprising an electric mechanism capable of performing unlocking of the locking mechanism and sliding of the upper rail with respect to the lower rail after unlocking with a single motor. The vehicle seat sliding device according to claim 1,
The electric mechanism includes one motor, a screw that can be rotated by driving the motor, a nut that is screwed to the screw, a winding member that can slidably receive the nut and wind the wire, and the nut. And an unlocking block that can release the locking mechanism when sliding,
When the nut slides due to the rotation of the screw driven by the motor, the lock mechanism unlocks,
When this slid nut presses against the inner surface of the winding member, the winding member winds the wire so that the upper rail starts to slide relative to the lower rail.
A vehicle seat slide device in which unlocking of the lock mechanism is completed before the slide starts. The vehicle seat slide device according to claim 2,
When the operation to stop the motor is performed, the motor stops and the upper rail slides with respect to the lower rail.
As soon as this motor stops, the reverse drive of this motor begins,
When this reverse rotation starts, the nut slides to return to the state before the slide,
A vehicle seat slide device, wherein the lock mechanism is returned to the locked state along with the slide of the nut. The vehicle seat slide device according to claim 3,
When the lock mechanism is returned to the locked state, when the half lock state is reached, the lock claw of the lock mechanism regulates the return of the unlocking block and the nut, so that the roller starts to rotate together with the nut. A vehicle seat slide device, wherein when the upper rail starts to slide relative to the lower rail, the lock claw is fitted into the lower rail.

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