JP5933023B2 - Slide rail mechanism and vehicle seat - Google Patents

Description

  The present invention relates to a slide rail mechanism and a vehicle seat, and more particularly to a slide rail mechanism having a lock member that restricts relative movement of an upper rail with respect to a lower rail and a vehicle seat including the slide rail mechanism.

2. Description of the Related Art Conventionally, a vehicle seat having a slide rail mechanism that can slide a seat body in a front-rear direction with respect to a vehicle body floor is known.
The slide rail mechanism mainly includes a lower rail that is fixed to the vehicle body floor, an upper rail that is fixed to the seat body and is supported so as to be relatively movable on the lower rail, and a lock member that restricts relative movement of the lower rail and the upper rail. . As a slide rail mechanism having a lock member, a technique is known in which the relative movement of the upper rail with respect to the lower rail is brought into a locked state or an unlocked state by an occupant operating a handle (for example, Patent Document 1).

As shown in FIG. 6, the seat slide device described in Patent Document 1 mainly includes a lower rail 110, an upper rail 120, a lock lever 130, and a handle 150. As the handle 150 is operated, the lower rail 110 is provided. The lock claw 136 of the lock lever 130 is detachably connected to the lock hole 116 via the opening hole 125 of the upper rail 120, and the relative movement of the upper rail 120 with respect to the lower rail 110 is restricted. Can do.
The handle 150 is inserted into the interlocking support portion 140 of the lock lever 130 and is supported so as to be rotatable relative to the lock lever 130. The lock lever 130 is inserted into the upper rail 120 and is supported so as to be rotatable with respect to the upper rail 120 in conjunction with the rotation of the handle 150.

Further, the lock lever 130 includes a coil spring 137 that biases the handle 150, and a part of the coil spring 137 is latched in a latch groove 151 formed on the outer surface of the handle 150, and is adjacent to a part of the coil spring 137. This portion is locked in a locking groove 146 formed in the interlocking support portion 140. The coil spring 137 urges the handle 150 to a position where the lock claw 136 is engaged with the lock hole 116.
Thus, since the handle 150 is configured to be biased toward the locked state of the upper rail 120 by the coil spring 137, it is possible to enhance the release prevention function of the lock mechanism.

JP 2012-111378 A

However, in the seat slide device like Patent Document 1, a part of the coil spring 137 is latched in the latching groove 151 of the handle 150, and a part adjacent to the part of the coil spring 137 is latched in the locking groove 146 of the lock lever 130. However, the shape and arrangement for preventing the holding position of the coil spring 137 from being shifted were not particularly considered. For this reason, the coil spring 137 may be displaced from the normal holding position of the latching groove 151 and the locking groove 146 due to an abrupt steering operation by the occupant or an impact load at the time of a vehicle collision, etc. was there.
Therefore, there has been a demand for a slide rail mechanism in which the function of preventing the displacement of the coil spring from the handle and the lock member and the function of preventing the coil spring from dropping are improved.
Further, in the seat slide device as in Patent Document 1, when the handle 150 and the lock lever 130 constituting the lock mechanism are assembled, the handle 150 is inserted into the lock lever 130 and at the same time, the latch provided in the handle 150 is latched. Since it is necessary to perform an assembly operation in which a part of the coil spring 137 provided in the lock lever 130 is hooked in the groove 151, a slide rail mechanism that further improves the assembly workability has been desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an operation in a configuration including a lock mechanism that restricts the relative movement of the upper rail with respect to the lower rail, and an operation handle for releasing the lock mechanism. It is an object of the present invention to provide a slide rail mechanism and a vehicle seat that have improved functions of preventing displacement and falling off of a spring member that biases a handle.
Another object of the present invention is to provide a slide rail mechanism and a vehicle seat with improved assembly workability.

According to the slide rail mechanism of the present invention, the subject is engaged with the lower rail fixed to the vehicle floor, the upper rail supported to be relatively movable with respect to the lower rail, and the engaging portion provided on the lower rail. It has a possible engaged portion, and is movable between an engaging position where the engaged portion engages with the engaging portion and a disengagement position where the engaged portion is separated from the engaging portion. In this state, the lock member attached to the upper rail, the spring member that urges the lock member so that the lock member is located at the engagement position, and the urging force of the spring member against the urging force of the occupant are operated. And an operation handle for positioning the lock member at the disengagement position, and an outer surface of the operation handle is formed with a latch groove for latching a part of the spring member. The operation A holding portion that holds a portion of the dollar in which the latching groove is formed, and a portion of the spring member that is adjacent to the portion of the spring member that is latched in the latching groove. A locking groove that stops, and a regulating portion that protrudes from the holding portion and restricts the spring member from falling off the locking groove by narrowing an opening of the locking groove, and the holding portion is An upper plate portion and a bottom plate portion that face each other, and a side plate portion that connects the bottom plate portion and the upper plate portion, and a portion of the operation handle in which the retaining groove is formed is the upper plate portion. The retaining groove is held in a holding region surrounded by the bottom plate portion and the side plate portion, and the upper surface of the side plate portion is recessed downward in a portion different from the portion connected to the upper plate portion. And the restricting portion is provided on the opposite side of the upper plate portion via the locking groove. Is, the regulating portion protrudes upward so as to narrow the opening of the locking groove, and are solved at least partially Rukoto protrude above the lower end of the upper plate portion, a.

In this way, the lock member is formed to protrude from the holding portion and includes a restricting portion that restricts the spring member from falling off the locking groove by narrowing the opening of the locking groove, so that the spring member can be prevented from falling off. The functionality of the locking member can be improved. Accordingly, the present invention provides a slide rail mechanism that includes a lock member that restricts the relative movement of the upper rail with respect to the lower rail, and that is provided on the lock member and has improved functions to prevent displacement and fall-off of a spring member that biases the operation handle. Can do.
In addition, the portion of the operation handle where the latching groove is formed is held in a holding region surrounded by the upper plate portion, the bottom plate portion, and the side plate portion, so the operation handle is used as a holding portion of the lock member. It can be stably held, and the functionality of the lock mechanism can be improved.
Further, the opening of the locking groove provided in the side plate portion is configured to be narrowed by the restriction portion provided on one end side of the opening so as to protrude upward, so that the opening is locked in the locking groove. The function of preventing the spring member from falling off can be further improved.
Further, since at least a part of the restricting portion provided on one end side of the opening of the locking groove protrudes above the lower end of the upper plate portion provided on the other end of the opening, the opening of the locking groove is further increased. It becomes the structure narrowed and can further prevent the spring member locked in the locking groove from dropping off.

At this time, it is preferable that the restricting portion protrudes toward the upper plate portion so as to narrow the opening of the locking groove .
Since it becomes such a structure, the fall-off prevention function of the spring member latched by the latching groove can be improved further.

At this time, the holding portion includes a guide portion that is formed to protrude from an end portion on the side where the operation handle is inserted, and guides a portion of the operation handle in which the retaining groove is formed into the holding area. And good.
As described above, since the holding portion includes the guide portion that guides the portion of the operation handle in which the retaining groove is formed into the holding region, the operation portion is operated when assembling the operation handle and the lock member constituting the lock mechanism. The handle is guided by the guide portion and can be inserted into the holding portion of the lock member, so that the assembling work is facilitated.

At this time, of the outer surface of the operation handle, an upper surface of the end portion closer to the upper rail is formed with the retaining groove and an inclined surface closer to the upper rail than the retaining groove, The inclined surface may be inclined downward in a direction from the latching groove toward one end closer to the upper rail.
As described above, the upper surface of the end surface of the outer surface of the operation handle is provided with the retaining groove and the inclined surface that is inclined downward in the direction from the retaining groove toward one end closer to the upper rail. When a part of the spring member is latched in the latch groove of the operation handle, a part of the spring member is guided by the inclined surface, and the assembling work is facilitated.

At this time, the operation handle is held by the holding portion so as to be rotatable integrally with the lock member, and the lock member is a rotation provided between the holding portion and the engaged portion. It is preferable that a moving shaft is provided, and the rotating shaft is pivotally supported by the upper rail in a state where the locking member is rotatable with respect to the upper rail in conjunction with the rotation of the operation handle.
Thus, since the lock member is pivotally supported in a state that it can rotate with respect to the upper rail in conjunction with the rotation of the operation handle, the lock member is rotated by the operation of the operation handle to It is a compact configuration that restricts the relative movement of the upper rail.

At this time, the lock member may be inserted into the upper rail such that a portion of the lock member including the holding portion protrudes from an end of the upper rail on the operation handle side.
As described above, since the operation handle is held by the holding portion protruding from the upper rail among the lock members inserted in the upper rail, when the operation handle rotates with respect to the lock member, The upper rail is not in contact with the upper rail.
Therefore, the relative rotation range of the operation handle and the lock member can be expanded, and the lock state maintaining function can be enhanced.

At this time, you may comprise as a vehicle seat provided with said slide rail mechanism.
With this configuration, the slide rail mechanism has a lock mechanism that restricts the relative movement of the upper rail with respect to the lower rail, and the slide rail mechanism that is provided in the lock mechanism and has an improved function of preventing the spring member that biases the operation handle from falling off. The vehicle seat provided can be obtained.

According to the first aspect of the present invention, the lock member is provided so as to protrude from the holding portion and includes a restricting portion that restricts the spring member from falling off the locking groove by narrowing the opening of the locking groove. The drop-off can be prevented and the functionality of the lock member can be improved. Accordingly, the present invention provides a slide rail mechanism that includes a lock member that restricts the relative movement of the upper rail with respect to the lower rail, and that is provided on the lock member and has improved functions to prevent displacement and fall-off of a spring member that biases the operation handle. Can do.
In addition, the portion of the operation handle where the latching groove is formed is held in a holding region surrounded by the upper plate portion, the bottom plate portion, and the side plate portion, so the operation handle is used as a holding portion of the lock member. It can be stably held, and the functionality of the lock mechanism can be improved.
Further, the opening of the locking groove provided in the side plate portion is configured to be narrowed by the restriction portion provided on one end side of the opening so as to protrude upward, so that the opening is locked in the locking groove. The function of preventing the spring member from falling off can be further improved.
Further, since at least a part of the restricting portion provided on one end side of the opening of the locking groove protrudes above the lower end of the upper plate portion provided on the other end of the opening, the opening of the locking groove is further increased. It becomes the structure narrowed and can further prevent the spring member locked in the locking groove from dropping off.
According to the invention of claim 2, the function of preventing the spring member locked in the locking groove from falling off can be further improved.

According to the invention of claim 3, since the holding portion includes the guide portion that guides the portion of the operation handle in which the retaining groove is formed into the holding area, the operation handle and the lock member that constitute the lock mechanism are provided. When assembling, the operation handle is guided by the guide part and can be inserted into the holding part of the lock member, and the assembling work is facilitated.
According to the invention of claim 4 , on the upper surface of the end portion of the outer surface of the operation handle, there is a retaining groove and an inclined surface that is inclined downward in a direction from the retaining groove toward one end closer to the upper rail. Therefore, when a part of the spring member is latched in the latch groove of the operation handle, a part of the spring member is guided by the inclined surface, and the assembling work is facilitated.
According to the fifth aspect of the present invention, the lock member is pivotally supported in a rotatable state with respect to the upper rail in conjunction with the rotation of the operation handle, so that the lock member is rotated by the operation of the operation handle. Thus, a compact configuration is provided that restricts the relative movement of the upper rail with respect to the lower rail.
According to the invention of claim 6, since the operation handle is held by the holding portion protruding from the upper rail among the lock members inserted in the upper rail, when the operation handle rotates with respect to the lock member. In addition, the operation handle and the upper rail are not in contact with each other.
Therefore, the relative rotation range of the operation handle and the lock member can be expanded, and the lock state maintaining function can be enhanced.
According to invention of Claim 7, the vehicle seat provided with the slide rail mechanism which has said effect can be obtained.

1 is a schematic perspective view of a vehicle seat according to the present invention. It is a schematic perspective view of the slide rail mechanism which concerns on this invention. It is the schematic perspective view which decomposed | disassembled and showed the slide rail mechanism of FIG. (A) is the fragmentary sectional view which looked at the slide rail mechanism of FIG. 2 from the side surface side, (b) is the fragmentary sectional view seen from the plane side. It is a partial side view which shows the state by which the operation handle was inserted in the holding | maintenance part among the slide rail mechanisms of FIG. It is explanatory drawing of the vehicle seat provided with the seat slide apparatus of the prior art example.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the member, arrangement | positioning, etc. which are demonstrated below do not limit this invention, and can be variously changed in accordance with the meaning of this invention.

The present embodiment includes a lock member that restricts the relative movement of the upper rail with respect to the lower rail, and a spring member that biases the relative movement of the upper rail to a locked state, and is attached to the lock member and locks a part of the spring member. The present invention relates to an invention of a vehicle seat provided with a slide rail mechanism, characterized in that a restricting portion for narrowing the opening of the locking groove is provided for the locking groove.
As shown in FIG. 1, the vehicle seat S of the present embodiment is mounted on a vehicle body floor in a state in which a seat body including a seat cushion 1, a seat back 2, and a headrest 3 is movable in the front-rear direction. It comprises a slide rail mechanism 4 for mounting.
The side on which the occupant is seated with respect to the seat back 2 of the vehicle seat S is the front side.

The seat cushion 1 is a seating portion that supports an occupant from below, and is configured such that a cushion pad 1a is placed on a cushion frame (not shown) serving as a skeleton and is covered with a skin 1b from above the cushion pad 1a. ing.
The seat back 2 is a backrest portion that supports the back of the occupant from the back, and is configured by placing a cushion pad 2a on a seat back frame (not shown) serving as a skeleton and covering with a skin 2b.
The headrest 3 is a head that supports the occupant's head from behind, and is formed by disposing a cushion pad 3a on a pillar (not shown) serving as a core material and covering it with a skin 3b.

  The slide rail mechanism 4 is disposed between the seat main body and the vehicle body floor in the vertical direction, and as shown in FIG. The upper rail 20 that is supported and fixed to the seat cushion 1, the lock member 30 that is inserted into the upper rail 20 and restricts the relative movement of the upper rail 20, and is locked to the lock member 30, so that the upper rail 20 cannot be relatively moved. The spring member 37 is maintained mainly in a locked state, and the operation handle 50 is supported by one end of the lock member 30.

The lower rail 10 is formed of a long hollow body made of a metal material, and is arranged in a pair at a predetermined interval in the left-right direction, and is configured such that a front end portion and a rear end portion are openings.
The material of the lower rail 10 is not limited to a metal material, and other materials such as a resin material may be used.

As shown in FIG. 3, the lower rail 10 includes a bottom plate portion 11 fixed to the vehicle body floor, an outer plate portion 12 bent upward from both left and right end portions of the bottom plate portion 11, and upper end portions of the left and right outer plate portions 12. The upper plate portion 13 is bent inward from the left and right sides, and the inner plate portion 14 is bent downward from the left and right upper plate portions 13.
The lower rail 10 is provided with a storage chamber 15 surrounded by a bottom plate portion 11, left and right outer plate portions 12, left and right upper plate portions 13, and left and right inner plate portions 14. , An opening formed between the left and right inner plate portions 14 is provided.
A plurality of lock grooves 16 each having a substantially U-shape cut upward from a substantially central portion to a front portion are provided at lower end portions of the left and right inner plate portions 14.
The lock groove 16 corresponds to the engaging portion described in the claims.

The upper rail 20 is a long body that slides along the lower rail 10 while being inserted into the storage chamber 15 of the lower rail 10, and is formed of a metal material or the like.
As shown in FIG. 3, the upper rail 20 includes an upper plate portion 21 connected to the seat cushion 1, an inner plate portion 22 bent downward from both left and right end portions of the upper plate portion 21, and left and right inner plate portions 22. And a guide plate portion 23 that is bent outward from the lower end portion and protrudes upward.
The upper rail 20 is provided with a storage chamber 24 surrounded by an upper plate portion 21 and left and right inner plate portions 22, and a receiving groove 25 formed between the inner plate portion 22 and the guide plate portion 23. The housing chamber 24 is opened downward, and the housing groove 25 is opened upward.

A stopper portion 26 cut and raised downward is formed in the front portion of the upper plate portion 21, and the stopper portion 26 is configured to enter the accommodation chamber 24.
A plurality of lock holes 27 each having a substantially U-shape that is notched upward are provided in the lower end portions of the left and right inner plate portions 22 and the guide plate portion 23 in a substantially central portion in the front-rear direction.
A through hole 28 penetrating in the left-right direction is provided between the stopper portion 26 and the lock hole 27 in the front-rear direction at the center in the up-down direction of the left and right inner plate portions 22.

As shown in FIG. 3, the upper rail 20 is inserted into the accommodation chamber 15 of the lower rail 10, the upper plate portion 21 and the inner plate portion 22 protrude upward from the opening of the accommodation chamber 15, and the guide plate portion 23 is accommodated. The chamber 15 is configured to be fitted between the outer plate portion 12 and the inner plate portion 14. Further, the inner plate portion 14 of the lower rail 10 is configured to be fitted into the accommodation groove 25 of the upper rail 20.
A guide 29 is fitted between the left and right outer plate portions 12 of the lower rail 10 and the left and right guide plate portions 23 of the upper rail 20, and the guide 29 is slidable in the front-rear direction with respect to the lower rail 10. The lower rail 10 and the upper rail 20 are supported.

As shown in FIG. 3, the lock member 30 is a long body formed of a metal material or the like, and is changed from a locked state in which the upper rail 20 is not relatively movable with respect to the lower rail 10 to an unlocked state in which relative movement is possible. It consists of a member that operates to switch, and is inserted into the accommodation chamber 24 of the upper rail 20.
The lock member 30 is disposed on the left and right sides of the lock member 30, and is adjacent to the left and right inner plate portions 22 of the upper rail 20 and extends in the front-rear direction, the right side plate portion 31 and the left side plate portion 32, and the right side plate portion. 31 and a substantially flat upper plate portion 33 laid on the upper surface of the rear end portion of the left side plate portion 32, and a convex shape provided at a substantially central portion and projecting outward from the right side plate portion 31 and the left side plate portion 32 to the left and right. A substantially flat stopper plate 35 formed by curving the left side plate 32 inwardly in the left and right sides, the right side plate 31 and the left side plate. A plurality of locking claws 36 protruding from the right side plate portion 31 and the left side plate portion 32 to the left and right sides, and a front end portion of the right side plate portion 31, which is more than the left side plate portion 32. A holding portion 40 having a substantially U-shaped longitudinal section provided in a portion extending forward; It is mainly composed of.

The rotation shaft 34 is formed of a substantially circular convex portion, and is inserted into the through hole 28 of the upper rail 20 and pivotally supported, whereby the lock member 30 can be rotated with respect to the upper rail 20.
More specifically, as shown in FIGS. 4A and 4B, after the lock member 30 is inserted into the storage chamber 24 of the upper rail 20, the stopper portion 26 of the upper rail 20 is bent downward so that the right side By inserting and engaging in the gap between the plate portion 31 and the stopper plate portion 35, a force is applied in a direction in which the right side plate portion 31 and the stopper plate portion 35 spread outward in the left and right directions. The rotating shaft 34 is inserted into the through hole 28 and is pivotally supported.

As shown in FIG. 3, the lock claw 36 is a member that detachably engages with the lock groove 16 of the lower rail 10 through the lock hole 27 of the upper rail 20.
When the lock claw 36 is in the engagement position where it engages with the lock groove 16, the upper rail 20 is locked with respect to the lower rail 10, and when the lock claw 36 is in the release position where the lock claw 36 is detached from the lock groove 16, the upper rail 20 is 10 is configured to be unlocked.
The lock claw 36 includes four left lock claws 36a formed in a substantially rectangular plate shape, and one right lock claw 36b formed in a substantially rectangular plate shape and having left and right outer ends connected to each other. ing.
The lock claw 36 corresponds to the engaged portion described in the claims.

  When the lock member 30 rotates about the rotation shaft 34, the lock claw 36 can move between an engagement position where the lock claw 36 is engaged with the lock groove 16 and a disengagement position where the lock claw 36 is detached from the lock groove 16. it can. That is, when the lock claw 36 rotates upward about the rotation shaft 34, it engages with the lock groove 16 while penetrating the lock hole 27 and rotates downward about the rotation shaft 34. Further, the lock hole 27 is configured to be detached from the lock groove 16 while penetrating the lock hole 27.

The spring member 37 is a known torsion coil spring, and biases the lock member 30 so that the lock claw 36 is located at an engagement position where the lock claw 36 is engaged with the lock groove 16.
As shown in FIG. 3, the spring member 37 is composed of a spring main body portion 37a, a front spring arm portion 37b extending from the spring main body portion 37a to the front side and the rear side, and a rear spring arm portion 37c. The lock member 30 is disposed between the rotation shaft 34 and the holding portion 40.
The spring main body portion 37a is fitted between the inner plate portion 22 of the upper rail 20 and the right plate portion 31 of the lock member 30 to restrict the movement of the lock member 30 in the left-right direction and to deform the lock member 30. Plays a function to prevent.
The front spring arm portion 37 b protrudes from the front end portion of the upper rail 20 and is hooked on the holding portion 40. The rear spring arm portion 37 c is provided on the upper surface of the right side plate portion 31 and is hooked by a substantially L-shaped hook portion 38 that protrudes toward the left side plate portion 32.

  The holding portion 40 is a portion that holds the extended end portion of the operation handle. As shown in FIG. 5, the holding portion 40 includes a side plate portion 41 that continuously extends from the right side plate portion 31 to the front side, and a side plate portion 41. An upper plate portion 42 bent from the upper end portion to the left and right inner sides, a bottom plate portion 43 bent from the lower end portion of the side plate portion 41 to the left and right inner sides, and a guide portion 44 bent downward from the left end portion of the upper plate portion 42, , Mainly consists of.

The holding portion 40 is formed with a holding region 45 that is a space surrounded by the side plate portion 41, the upper plate portion 42, and the bottom plate portion 43.
On the upper surface of the side plate portion 41, a portion connected to the upper plate portion 42 is provided on the front side, and a substantially U-shaped engagement recessed downward in a rear portion adjacent to the portion connected to the upper plate portion 33. A groove 46 and a restricting portion 47 that protrudes toward the upper plate portion 42 are provided in a rear portion adjacent to the locking groove 46.
In addition, although the locking groove 46 is formed in a substantially U shape, the shape can be appropriately changed without being limited thereto, such as a substantially U shape or a substantially V shape.
As shown in FIG. 5, the upper plate portion 42 includes an upper plate portion distal end 42 a bent upward at the front end portion, and the bottom plate portion 43 includes a bottom plate portion distal end 43 a bent downward at the front end portion. The top plate portion tip 42a and the bottom plate portion tip 43a are inclined so as to spread in the vertical direction.
The rear end portion of the upper plate portion 42 protrudes toward the restricting portion 47 in the front-rear direction so as to cover a part of the opening of the locking groove 46.

The restricting portion 47 protrudes upward toward the upper plate portion 42 so as to narrow the opening of the locking groove 46. The upper end portion of the restricting portion 47 protrudes upward from the lower end portion of the upper plate portion 42.
The opening width of the locking groove 46 is formed to be approximately the same as the wire diameter of the spring member 37 or slightly smaller than the wire diameter of the spring member 37.
As described above, the rear end portion of the upper plate portion 42 protrudes toward the restricting portion 47, and the restricting portion 47 protrudes toward the upper plate portion 42, whereby the front-rear width of the opening of the locking groove 46 is narrowed. Thus, the spring member 37 locked in the locking groove 46 can be prevented from falling off.

  The restricting portion 47 of the present embodiment protrudes upward toward the upper plate portion 42 so as to narrow the opening of the locking groove 46, but the shape can be changed as appropriate without being limited thereto. It is. The restricting portion 47 may include a protruding portion that protrudes toward the upper plate portion 42 in the front-rear direction so as to narrow the opening of the locking groove 46 or to cover a part of the opening.

As shown in FIG. 3, the operation handle 50 is a rod member that is positioned at a disengagement position where the lock claw 36 is disengaged from the lock groove 16 against the urging force of the spring member 37 by the operation of the occupant. It is formed in a U shape.
The operation handle 50 includes a handle body 51 that is operated by an occupant and left and right handle arms 52 that are bent backward and extended from both left and right ends of the handle body 51.

As shown in FIG. 5, the rear end portion of the handle arm portion 52 is inserted and held in the holding region 45 of the holding portion 40, and a latch groove 53 that is recessed downward is formed on the outer surface of the rear end portion. And the inclined surface 54 formed in the back side rather than the latching groove | channel 53 is provided.
The latching groove 53 is substantially U-shaped and extends in the left-right direction, and is disposed to face the locking groove 46 in the left-right direction.
A part of the spring member 37 is latched by the latching groove 53, and a part adjacent to a part of the spring member 37 is latched by the latching groove 46.

  The inclined surface 54 is inclined downward toward the rear side. Therefore, when a part of the spring member 37 is latched in the latch groove 53 of the operation handle 50, a part of the spring member 37 is guided by the inclined surface 54, and the assembly work of the handle arm part 52 and the holding part 40 is performed. Becomes easier.

When the handle arm portion 52 is inserted and held in the holding region 45 of the holding portion 40, the handle arm portion 52 is guided by the guide portion 44 and the side plate portion 41 in the left-right direction, and the upper plate portion in the up-down direction. Since it is guided by the tip 42a and the bottom plate portion tip 43a, the assembling work is facilitated.
Further, since the guide portion 44 is connected to the top plate portion tip 42a and is disposed on the front side of the case where it is connected to the bottom plate portion tip 43a, the handle arm portion 52 is placed in the holding region 45. It becomes easier to guide.

As shown in FIG. 5, when the handle arm portion 52 is inserted in the holding region 45 and is urged by the spring member 37 in a direction in contact with the bottom plate portion 43, the lock member 30 is locked. The claw 36 is in a position rotated upward about the rotation shaft 34, is engaged with the lock groove 16 of the lower rail 10, and holds the upper rail 20 in a locked state.
When the occupant moves the handle body 51 upward, the handle arm 52 moves in a direction in contact with the upper plate 42 against the urging force of the spring member 37. The position is switched to a position rotated downward about 34, and is separated from the lock groove 16, and the upper rail 20 is held in the unlocked state.

The operation handle 50 is inserted into the holding portion 40 and is held in a state where it can rotate integrally with the lock member 30. The lock member 30 is interlocked with the rotation of the operation handle 50, and the rotation shaft 34. Is connected to the upper rail 20 so as to be rotatable with respect to the upper rail 20 and the lower rail 10.
The slide rail mechanism 4 is normally in a state in which the lock claw 36 is biased by the spring member 37 to the engagement position where the lock claw 36 is engaged with the lock groove 16 of the lower rail 10, and moves the upper rail 20 relative to the lower rail 10. Hold impossible. When the operation handle is moved upward by the occupant's operation, the lock claw 36 moves to the disengagement position where the lock claw 36 is detached from the lock groove 16, and the upper rail 20 can be easily switched to a state in which the upper rail 20 can be moved relative to the lower rail 10. it can.

In the slide rail mechanism 4 of the present embodiment, a restricting portion 47 is provided so as to narrow the opening of the locking groove 46 in which the spring member 37 is locked.
Therefore, it is possible to prevent the spring member 37 from dropping from the locking groove 46 and the latching groove 53 when the operation handle 50 is operated randomly.
For example, when the handle main body 51 is moved downward, the handle arm 52 rotates with the front portion of the upper plate 42 as a fulcrum and is in contact with the upper plate 42 so as to be substantially parallel. Stroke state. Even when the handle main body 51 is further moved upward from the lock full stroke state and the handle arm 52 is rotated downward with the front portion of the upper plate 42 as a fulcrum, the spring The function of preventing the member 37 from falling off can be achieved.

  In each of the above-described embodiments, the front seat of the automobile has been described as a specific example. However, the present invention is not limited to this and can be applied to a middle seat and a rear seat of the automobile.

S Vehicle Seat 1 Seat Cushion 1a, 2a, 3a Cushion Pad 1b, 2b, 3b Outer Skin 2 Seat Back 3 Headrest 4 Slide Rail Mechanism 10 Lower Rail 11 Bottom Plate 12 Outer Plate 13 Upper Plate 14 Inner Plate 15 Storage Chamber 16 Lock groove 20 Upper rail 21 Upper plate portion 22 Inner plate portion 23 Guide plate portion 24 Accommodation chamber 25 Accommodation groove 26 Stopper portion 27 Lock hole 28 Through hole 29 Guide 30 Lock member 31 Right plate portion 32 Left plate portion 33 Upper plate portion 34 times Moving shaft 35 Stopper plate portion 36 Lock claw 36a Left lock claw 36b Right lock claw 37 Spring member 37a Spring body portion 37b Front spring arm portion 37c Rear spring arm portion 38 Hook portion 40 Holding portion 41 Side plate portion 42 Upper plate portion 42a Upper Plate portion tip 43 Bottom plate portion 43a Bottom plate portion tip 44 Guide portion 45 Holding region 46 Locking groove 4 Restriction portion 50 Operation handle 51 Handle body portion 52 Handle arm portion 53 Latching groove 54 Inclined surface 110 Lower rail 116 Lock hole 120 Upper rail 125 Open hole 130 Lock lever 136 Lock claw 137 Coil spring 140 Interlocking support portion 146 Locking groove 150 Handle 151 Hook Stop groove

Claims (7)

A lower rail fixed to the body floor,
An upper rail supported to be movable relative to the lower rail;
An engaged portion that is engageable with an engaging portion provided on the lower rail, and an engaged position where the engaged portion engages with the engaging portion; and the engaged portion is engaged with the engaging portion. A locking member attached to the upper rail in a movable state between the separation position and the separation position separated from the part;
A spring member for biasing the lock member so that the lock member is located at the engagement position;
An operation handle for positioning the lock member at the disengaged position against an urging force of the spring member by an occupant operation,
A latching groove for latching a part of the spring member is formed on the outer surface of the operation handle,
The locking member is
Of the operation handle, a holding portion for holding a portion where the latching groove is formed;
A locking groove that is formed in the holding portion and locks a portion of the spring member that is adjacent to the portion that is latched in the latching groove;
A regulation part that protrudes from the holding part and regulates the dropout of the spring member from the locking groove by narrowing the opening of the locking groove ;
The holding portion includes an upper plate portion and a bottom plate portion that face each other, and a side plate portion that connects the bottom plate portion and the upper plate portion,
Of the operation handle, the portion where the retaining groove is formed is held in a holding region surrounded by the upper plate portion, the bottom plate portion, and the side plate portion,
On the upper surface of the side plate portion, in a portion different from the portion connected to the upper plate portion, the locking groove recessed downward, and the regulating portion on the opposite side of the upper plate portion via the locking groove Is provided,
The regulating unit protrudes upward so as to narrow the opening of the locking groove and a slide rail mechanism characterized that you have to project above the lower end of at least a portion of the upper plate portion. The slide rail mechanism according to claim 1, wherein the restricting portion protrudes toward the upper plate portion so as to narrow an opening of the locking groove . The holding portion includes a guide portion that is formed to project from an end portion on the side where the operation handle is inserted, and guides a portion of the operation handle in which the retaining groove is formed into the holding region. The slide rail mechanism according to claim 1 or 2 . Of the outer surface of the operation handle, on the upper surface of the end portion close to the upper rail, the latching groove and an inclined surface on the side closer to the upper rail than the latching groove are formed,
The inclined surface, the seat stopper in a direction toward the side of one end closer to the upper rail from the groove, claims 1 to 3 slide rail mechanism according any one, characterized in that slants downward. The operation handle is held by the holding portion in a state of being rotatable integrally with the lock member,
The lock member includes a rotation shaft provided between the holding portion and the engaged portion,
Pivot shaft, in conjunction with the rotation of the operating handle, according to claim 1 to 4, characterized in that said locking member is pivotally supported by the upper rail in a rotatable state with respect to the upper rail Any one of the slide rail mechanisms. The lock member is inserted into the upper rail such that a portion of the lock member including the holding portion protrudes from an end of the upper rail on the operation handle side. Item 6. The slide rail mechanism according to any one of Items 1 to 5 . Vehicle seat, characterized in that it comprises a slide rail mechanism according to any one of claims 1 to 6.

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