JP6148348B2 - Seat slide device - Google Patents

Description

  The present invention relates to a seat slide device, and more particularly, a seat slide device in which seat tracks supporting a seat-side upper rail movably with respect to a vehicle body floor-side lower rail are disposed on both sides between the vehicle body floor and a seat. The present invention relates to a seat slide device having an optimized handle support structure for unlocking in response to an external force.

In general, a vehicle seat is configured by disposing a cushion material on a frame serving as a skeleton and covering the cushion material with a skin material.
The frame that is a skeleton is generally composed of a seat cushion frame that is a skeleton of a seating portion, and a seat back frame that is a skeleton of a backrest, and a rear end portion of the seat cushion frame and a lower end portion of the seat back frame. Attached or constructed directly or indirectly (eg indirectly via a reclining mechanism).
In general, a headrest for holding the head of the occupant is attached above the seat back frame.

In addition, a seat slide device that slides in the vehicle longitudinal direction is provided below the seat cushion frame, and the seat cushion frame is directly or indirectly connected to the seat slide device, thereby It becomes possible to slide.
Such a seat slide device is generally used as a pair of seat tracks that are spaced apart in the width direction, and to a fixed rail that is directly or indirectly attached to the vehicle body floor. And configured to slide in the vehicle longitudinal direction.
The seat track supports an end portion of a handle for unlocking.
The lock mechanism prohibits the upper rail from sliding relative to the lower rail. However, when an external force is received from the handle, the lock mechanism is unlocked and the upper rail is allowed to slide relative to the lower rail.
The lock mechanism is supported by an upper rail that constitutes the seat track. In order to support the lock mechanism in this way, a dedicated bracket is used (for example, see Patent Document 1).
In the example described in Patent Document 1, a lock bracket (which is a member serving as a dedicated bracket) is used to support the lock mechanism in a swingable manner.
The lock bracket is slidably supported on the upper rail.

JP 2001-047996 A

As described above, in the related art as described in Patent Document 1, a dedicated member (bracket) is created, and the dedicated member is attached to the upper rail, so that the lock mechanism can be supported on the upper rail. .
However, this technique has a problem that a dedicated member is required, which increases the cost, and the slide device itself becomes heavy due to the weight of the member.
Furthermore, work for attaching a dedicated member is also required, which takes time for construction.
Therefore, it has been desired to develop a seat slide device that realizes weight reduction and is advantageous in cost and workability.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a seat slide device that can be manufactured at low cost and can improve manufacturing efficiency while realizing weight reduction. is there.

The subject is a seat slide device that slides a vehicle seat in the vehicle longitudinal direction, and the seat slide device is arranged to be fixed to the vehicle floor and slidable in the vehicle longitudinal direction with respect to the lower rail. The seat slide device is provided with a lock mechanism for prohibiting the upper rail from sliding relative to the lower rail. A lock lever member that swings so as to pass through or leave a hole formed in the lower rail and the upper rail, and a handle that inputs a force for swinging the lock lever member. A sliding means abutting portion that is arranged inside the lower rail and slides, and projects into the upper portion of the lower rail. A lock lever shaft support for projecting the lock lever member, and the upper rail includes an outer upper rail, and a member mounting portion. An inner upper rail, and the member attaching portion is constituted by an outer member attaching portion constituting the outer upper rail and an inner member attaching portion constituting the inner upper rail, and the lock lever shaft. supporting portion includes a first locking lever shaft support portion which is cut and raised from said outer member mounting portion, one side edge or et collision of the front side and rear side of the hole portion formed in the inner member mounting portion a second lock lever shaft support portion which is cut and raised from the inner attachment portion so as to leave, which is configured to have the first locking lever shaft support portion, said hole Front and through the other side projects out of the rear side of the and the second locking lever shaft support portion and the first lock lever shaft support portion is solved by parallel in the front-rear direction.

Since it is configured in this way, parts such as a bracket for supporting the lock lever member become unnecessary.
That is, according to the prior art, it is necessary to attach a separate part such as a bracket for supporting the lock lever member to the member mounting portion of the upper rail, but in the present invention, the lock lever that is the holding portion of the lock lever member Since the shaft support portion is formed so as to protrude from the member mounting portion, there is no need to use separate parts as in the prior art.
For this reason, the number of parts is reduced, which is advantageous in terms of cost, and the workability is improved because it is not necessary to attach another part.
Further, since it is not necessary to attach another part, the weight of the part can be eliminated, and the weight of the seat slide device can be reduced.
More specifically, the lock lever shaft support portion may be cut and raised from the member mounting portion.

In this case, the upper rail includes an outer upper rail and an inner upper rail, and the member mounting portion includes an outer member mounting portion that configures the outer upper rail and an inner member mounting that configures the inner upper rail. The lock lever shaft support portion includes a first lock lever shaft support portion protruding from the outer member attachment portion, and a front side and a rear side of a hole formed in the inner member attachment portion. And a second lock lever shaft support portion protruding from one edge of the side, the first lock lever shaft support portion on the front side and the rear side of the hole portion. It is preferable that the second lock lever shaft support portion and the first lock lever shaft support portion are configured so as to be juxtaposed in the front-rear direction .
Further, it is preferable that the lock lever shaft support portion is formed integrally with the member mounting portion.

Since it is comprised in this way, a member attaching part can be made into a double structure, and an intensity | strength can be raised.
In addition, the member mounting portion protrudes from the outer member mounting portion (integrated) and the first lock lever shaft support portion formed so as to protrude from the inner member mounting portion (to be integrated). And a second lock lever shaft support portion formed on
That is, the weight of the lock lever member can be shared and supported by both the outer member attaching portion and the inner member attaching portion.
Therefore, the support strength can be improved.
The first locking lever shaft support portion formed integrally with the outer member mounting portion, the protruding hole formed in the inner member mounting portion from (the second holding portion, the hole portion projecting from the edge) Therefore, it is not necessary to separately form a protruding hole, so that the workability is improved and the cost is reduced.
Specifically, the first lock lever shaft support portion and the second lock lever shaft support portion may be formed by cutting and raising from the outer member mounting portion and the inner member mounting portion, respectively. When formed in this way, a hole formed when the second holding member is cut and raised from the inner member mounting portion can be used as the hole.

Further, at this time, before Symbol lock lever member, said being shaft mounting portion is formed to be connected to the upper rail, the shaft attachment portion, with the shaft supporting protruding bearing portions are formed, the lock lever shaft A shaft protrusion is formed on the support portion, the shaft protrusion is a protrusion protruding in a spherical dome shape, and the shaft support protrusion support portion is an inner wall surface along the outer surface of the shaft protrusion. Is a hole formed in a tapered shape, and the shaft protrusion is rotatably held in the shaft support protrusion support.

Since it is comprised in this way, a number of parts can be reduced, without making a shaft into another component.
That is, the shaft protrusion formed on the lock lever shaft support portion functions as a rotation (swing) shaft of the lock lever member.
Moreover, since the inner wall surface of the shaft support protrusion support portion is formed in a tapered shape along the outer surface of the shaft protrusion formed in a spherical dome shape, the shaft protrusion can rotate smoothly.
Note that “along the outer surface” means at least a shape that becomes a contact surface of the spherical dome-shaped outer surface, and, for example, a hole portion that is formed in a substantially truncated cone shape is assumed.

According to the present invention, the lock lever shaft support portion for supporting the lock lever member constituting the lock mechanism is formed so as to protrude from the member attachment portion (integrated with the member attachment portion). Separate parts such as the necessary brackets are no longer required.
For this reason, the number of parts is reduced, which contributes to cost reduction and workability improvement.
Further, it is not necessary to attach a separate member for supporting the lock lever member constituting the lock mechanism, and the lock lever shaft support portion as the holding portion protrudes from the member attachment portion (integrated with the member attachment portion). Since it is formed , weight reduction of the seat slide device can be realized.

It is an external appearance side explanatory view of the vehicular seat concerning one embodiment of the present invention. It is a perspective view which shows the holding structure of the lock mechanism which concerns on one Embodiment of this invention. FIG. 3 is a view in the X direction of FIG. 2. It is an exploded view of the upper rail which concerns on one Embodiment of this invention. It is manufacture explanatory drawing of the 1st holding member which concerns on one Embodiment of this invention, and a 2nd holding member. It is explanatory drawing which shows the support state of the 1st axial protrusion which concerns on one Embodiment of this invention.

Hereinafter, a seat slide device 10 according to an embodiment (this embodiment) of the present invention will be described with reference to FIGS. 1 to 6 .
Here, in the seat slide device 10 of the present embodiment, a part (lower rail 11 side described later) is fixed (directly or indirectly) to the vehicle body floor, and another part (upper rail 12 described later) is fixed. The seat cushion frame is configured to slide in the vehicle front-rear direction with respect to the fixed portion to the vehicle body floor. By attaching the seat cushion frame (directly or indirectly) to the slidable portion, the seat cushion frame is It becomes possible to slide against.
Further, the seat slide device 10 according to the present embodiment is equipped with a lock mechanism K , and a handle 51 serving as an operating portion for releasing the lock mechanism K is supported by the upper rail 12 .

1 shows an embodiment of the present invention, FIG. 1 is an explanatory side view of the exterior of a vehicle seat, FIG. 2 is a handle holding structure, FIG. 3 is a view in the X direction of FIG. 2, and FIG. FIG. 5 is an exploded view of the first holding member and the second holding member.
In the figure, symbol FR indicates the front of the vehicle, and symbol RR indicates the rear of the vehicle.
In the following description, the width direction of the vehicle seat S is the left-right direction in a state of facing the front of the vehicle, and corresponds to the horizontal direction.
Furthermore, the vertical direction is the vertical direction when the vehicle seat S is arranged in the normal use state of the vehicle, that is, the vertical direction as a general concept, and corresponds to the vertical direction.

<Vehicle seat structure>
In the following, in describing the structure of the seat slide device 10 , first, the structure of the seat unit U including the vehicle seat S will be outlined.
The seat unit U is fixed to a vehicle body floor of a vehicle main body (a portion of the vehicle excluding the seat unit U ), and includes a vehicle seat S and a seat slide device 10 as shown in FIG.
Although the vehicle seat S shown in FIG. 1 is a known vehicle seat, there is no direct relationship with the present invention, so the configuration will be briefly described below.

The vehicle seat S according to the present embodiment includes a seat frame, a cushion body, and a skin material as its skeleton.
The seat frame is formed of a resin or metal material, and includes a seat cushion frame formed as a U-shaped frame having an opening on the rear side and a seat back frame on the back side.

The frame constituting the seat cushion frame is connected to the lower side of the seat back frame, for example, via a reclining mechanism at the rear end (U-shaped opening end).
Further, at the rear, both ends are bridged and connected by a connecting member such as a connecting pipe.
A cushion body is fixed to the seat frame configured as described above, and a skin material is covered on the surface of the cushion body to form a vehicle seat S as shown in FIG. .
A headrest is attached to the seat back frame.
In addition, the said description about the vehicle seat S is an illustration, and is not restricted to such a structure, A well-known vehicle seat is applicable.

<About the seat slide device>
The seat slide device 10 is formed as a pair of seat tracks 10A and 10A provided as a pair separated from each other in the left-right direction of the vehicle.
As described above, the one (left side) sheet track 10A and the other (right side) sheet track 10A are arranged in parallel with each other and spaced apart from each other in the left-right direction, but both have the same configuration. Hereinafter, only one configuration will be described.

As shown in FIGS. 2 to 4, the seat track 10 </ b> A includes a lower rail 11 fixed to the vehicle body floor, and an upper rail that engages with the lower rail 11 and can slide in the vehicle longitudinal direction within the lower rail 11. 12, a slide mechanism 13 that slides the upper rail 12 in the vehicle front-rear direction with respect to the lower rail 11, and a lock mechanism K.
The lower rail 11 may be directly fixed by being presented on the vehicle body floor, or may be indirectly fixed via a support bracket (not shown).

In addition, as described above, each of the lower rail 11 and the upper rail 12 is provided with a pair, and each extends along the front-rear direction. The pair of upper rails 12 and lower rails 11 are arranged in parallel with each other at an interval in the left-right direction, and the upper rails 12 are connected by a handle 51.
On the other hand, the pair of lower rails 11 are arranged in parallel with each other at an interval in the left-right direction, and the lower rails 11 are connected by, for example, a member frame (not shown).

  The lower rail 11 includes a substantially rectangular lower rail main body bottom portion 111 having a long side in the vehicle front-rear direction, lower rail main body side surface portions 112 and 112 standing upward from both long sides of the lower rail main body bottom portion 111, and the lower rail. Lower rail body flanges 113, 113 extending substantially parallel to the lower rail body bottom surface 111 from the upper end sides of the body side surfaces 112, 112 toward the center (toward the opposed lower rail body side surface 112), and the lower rail body flange Lower rail main body hanging portions 114 and 114 that hang downward from the end sides of the portions 113 and 113 (the side opposite to the side continuous with the lower rail main body side surface portions 112 and 112). It is a substantially U-shaped long member.

Note that a plurality of lock claw portion through holes 46 through which lock claws 154a to be described later penetrate are formed above the lower rail main body hanging portion 114 disposed on the inner side.
Further, a gap is formed between both ends of the lower rail body flanges 113 and 113 (ends on the side where the lower rail body hanging part 114 hangs down), that is, between the lower rail body hanging parts 114 and 114.

That is, the upper portion of Roare Le 11 is in a state in which (the side of the end side of the lower rail body hanging part 114 is hung) while being opened at both ends sides of the lower rail body collar portion 113, 113, this opening vehicle It is formed in a groove shape extending in the front-rear direction.
The space (groove) is referred to as “sliding groove T” for convenience of explanation.

Next, the upper rail 12 will be described.
The upper rail 12 includes an outer rail member 121 and an inner rail member 122.
The outer rail member 121 is disposed perpendicular to the lower rail body bottom surface portion 111.
The outer rail member 121 has an upper portion protruding upward from the sliding groove T of the lower rail 11 and an outer member mounting portion 121a disposed in the lower rail 11 and slightly outward from the lower end side of the outer member mounting portion 121a. As a member having an outer first inclined portion 121b that extends while rising and an outer second inclined portion 121c that rises inward from the outer edge of the outer first inclined portion 121b, and has a substantially J-shaped cross section. Composed.

In addition, from the upper side of the outer member taken with portion 121b, bent to form a top panel wall portion 121d is formed inward direction. The top wall portion 121d extends inward so as to be perpendicular to the outer member attachment portion 121a.
Note that a spring top fixing hole 35 is formed in the top wall 121d.

Similarly, the inner rail member 122 is disposed vertically against the lower rail body bottom portion 11 1.
The inner rail member 122 has an upper portion protruding upward from the sliding groove T of the lower rail 11 and an inner member mounting portion 122a disposed in the lower rail 11 and slightly inward from the lower end side of the inner member mounting portion 122a. A member having an inner first inclined portion 122b that extends while rising and an inner second inclined portion 122c that rises while rising from the inner edge of the inner first inclined portion 122b, and has a substantially inverted J-shaped cross section. Configured as

Of the free end (upper end) of the inner second inclined portion 122c, a lock claw that is cut out in a rectangular shape so as to open upward at a position facing a lock lever through-hole 43 described later. A plurality of part insertion parts 45 are formed in parallel.
In this example, the lock claw insertion portion 45 is cut out in a rectangular shape, but it is sufficient if the lock claw 154a can be inserted, and may be formed in a hole shape, for example.

The outer member mounting portion 121a and the inner member mounting portion 122a are configured such that the outer second inclined portion 121c of the outer rail member 121 is disposed outward with respect to the outer member mounting portion 121a, and the inner second member of the inner rail member 122. The inclined portion 122c is laminated (combined) in a state of being disposed inward with respect to the inner member attaching portion 122a.
Thus, the outer rail member 121 and the inner rail member 122 are combined to form the upper rail 12.
The detailed configuration and laminated structure (combination structure) of the outer rail member 121 and the inner rail member 122 are the main components of the present invention, and will be described in detail later.

Next, the slide mechanism 13 will be described.
Since the slide mechanism 13 only needs to use a known slide mechanism, it will be briefly described.
As shown in FIG. 3, the slide mechanism 13 according to the present embodiment includes a retainer 13 a, a first rotor 13 b, and a second rotor 13 c.
The slide mechanism 13 is disposed inside the Roare Le 1 1, this time, are disposed as a pair on the outside and inside.

The first rotor 13b and the second rotor 13c are steel spheres, and the diameter of the first rotor 13b is configured to be smaller than the diameter of the second rotor 13c.
The retainer 13a is a flat plate bent in a substantially L-shaped cross section, and a first rotor holding portion 13d is formed at the upper end portion thereof, and a second rotor holding portion 13e is formed at the lower end portion thereof. Yes.

13 d of 1st rotor holding | maintenance parts are formed as a recessed part (or hole, slit) for hold | maintaining the 1st rotor 13b rotatably, for example. In the present embodiment, two recesses (or holes, slits) are formed for one retainer 13a, and the two first rotors 13b are held in parallel.
Furthermore, the 2nd rotor holding | maintenance part 13e is formed as a recessed part (or hole, slit) for hold | maintaining the 2nd rotor 13c, for example. In the present embodiment, one recess (or hole, slit) is formed for one retainer 13a, and one second rotor 13c is held.

The outer first inclined portion 121b is disposed so that the outer surface of the outer first inclined portion 121b contacts the second rotor 13c, and the outer surface of the outer second inclined portion 121c contacts the first rotor 13b.
From this, the outer first inclined portion 121b and the outer second inclined portion 121c correspond to “sliding means abutting portions”, and the second rotor 13c and the first rotor 13b are sliding means. .

Further, the outer side surface of the inner first inclined portion 122b is in contact with the second rotor 13c, and the outer surface of the inner second inclined portion 122c is in contact with the first rotor 13b.
From this, the inner first inclined portion 122b and the inner second inclined portion 122c correspond to “sliding means contact portions”, and the second rotor 13c and the first rotor 13b are sliding means. .
Since it is configured in this manner, the first rotor 13 b and the second rotor 13 c are rotated by an external force, and the upper rail 12 slides with respect to the lower rail 11.

≪Detailed configuration and laminated structure of outer rail member and inner rail member≫
<Outer member mounting part>
The outer member attaching portion 121a is formed with a first holding portion 31, a first spring locking portion 32, a lock lever positioning piece 33, a first lock lever shaft support portion 34, and a spring upper fixing hole 35.
The first holding portion 31 is a hook-shaped member extending in the inner direction.
A first holding recess 31a that is cut out in a dome shape is formed at the tip (that is, the inner end), and the handle 51 can be gripped by the first holding recess 31a. .
A first upper portion spring locking slit 31b cut to open upward is formed above the base end portion of the first holding portion 31 and below this, A first lower part spring locking slit 31c cut to open is formed.

Further, a first tip end spring locking notch 31d cut out in the outer direction (the direction toward the outer member attaching portion 121a) is formed below the tip portion (inner end portion).
The first upper spring locking slit 31b and the first lower spring locking slit 31c are cut so as to have substantially the same width as the diameter of the wire spring W1 so that the wire spring W1 can be engaged. It is rare.

And this 1st holding | maintenance part 31 is cut and raised from the outer side member attaching part 121a.
That is, as shown in FIG. 5, the 1st holding | maintenance part 31 is formed by notching the flesh part which existed in the adjacent 1st hole part H1, and bending it inside and raising.
At this time, the 1st holding | maintenance part 31 is cut and raised toward the back from the back side edge of the 1st hole H1.
Thereby, the handle | steering-wheel 51 can be supported by the upper rail 12 without using the bracket etc. of another member like the past.

Furthermore, the 1st spring latching | locking part 32 is a hook-shaped member extended in the inner side direction.
A first rear upper spring locking slit 32a is cut and formed above the front end (inner side end) of the first spring locking portion 32 so as to open upward.
The first rear lower spring locking slit 32b is below the front end (inner side end) of the first spring locking portion 32 and below the first rear upper spring locking slit 32a. A cut is formed so as to open in the direction.

A lock lever positioning piece 33 and a first lock lever shaft support portion 34 are formed on the rear side of the first spring locking portion 32 so as to protrude inward.
This is a member for attaching the lock mechanism K shown in FIG.
The lock lever positioning piece 33 is a flat plate piece that protrudes inwardly, and at the tip (inner side end), the end of the handle 51 (a slide device held portion 51 a to be described later) faces inward. Press to perform positioning.

The lock lever positioning piece 33 is formed by cutting and raising the meat portion existing in the adjacent third hole H3 and bending it inward.
The third hole H3 is formed in a rectangular shape, and the lock lever positioning piece 33 is bent from the upper side of the third hole H3 and raised inward.

Further, the first lock lever shaft support portion 34 is a member for pivotally supporting a lock lever member 50 (which constitutes the lock mechanism K), which will be described later, so as to be swingable.
A first shaft protrusion 34 a is formed at the tip (inner end) of the first lock lever shaft support portion 34.
The first shaft protrusion 34a is a substantially spherical dome-shaped protrusion protruding forward (see FIG. 6 and the like).
The first lock lever shaft support portion 34 is also formed by cutting and raising the meat portion existing in the third hole H3 and bending it inward, and the rear side of the third hole H3. It is bent and raised inside.
The sprung portion fixing hole 35 is drilled above the first lock lever shaft support portion 34 of the top wall portion 121d.

<Inner member mounting part>
A second holding portion 41, a spring locking portion through hole 42, a lock lever through hole 43, and a second lock lever shaft support portion 44 are formed in the inner member attaching portion 122a.
The second holding portion 41 is a hook-shaped member extending in the inner direction.
A second holding recess 41a that is cut downward in a dome shape is formed at the tip (that is, the inner end), and the handle 51 can be gripped by the second holding recess 41a. .
A contact piece 41b that extends downward and curves in a J-shape when viewed from the side is formed above the second holding recess 41a.

A second lower portion spring locking slit 41c is formed below the base end portion of the second holding portion 41 so as to be opened toward the outside.
The second lower part spring locking slit 41c is cut so as to have substantially the same width as the diameter of the wire spring W1 so that the wire spring W1 can be engaged.
Furthermore, the 2nd front-end | tip part spring latching notch part 41d notched toward the outer side direction is formed in the front-end | tip part (inner side edge part).

And this 2nd holding | maintenance part 41 is cut and raised from the inner side member attaching part 122a.
That is, as shown in FIG. 5, the second holding portion 41 is formed by cutting and raising the meat portion existing in the adjacent second hole portion H2 and bending it inward.
At this time, the 2nd holding | maintenance part 41 is cut and raised toward the front from the front side edge of the 2nd hole H2.
Thereby, the handle | steering-wheel 51 can be supported by the upper rail 12 without using the bracket etc. of another member like the past.

The first hole H1 and the second hole H2 are formed at positions that are aligned when the outer member mounting portion 121a and the inner member mounting portion 122a are stacked.
That is, when both are laminated, the second holding part 41 and the first holding part 31 are disposed in the front-rear direction of the communication hole between the first hole part H1 and the second hole part H2. .

  The spring engaging portion through-hole 42 is a rectangular hole formed behind the second hole H2, and the first spring is formed when the outer member attaching portion 121a and the inner member attaching portion 122a are stacked. The first spring locking portion 32 is formed at a position where it can be aligned with the locking portion 32, that is, the first spring locking portion 32 can protrude inward.

A lock lever through hole 43 and a second lock lever shaft support portion 44 are formed on the rear side of the spring locking portion through hole 42.
The second lock lever shaft support portion 44 projects from the front portion of the lock lever through-hole 43 toward the inside.
The lock lever through hole 43 is a hole for disposing the lock lever member 50 shown in FIG.

The second lock lever shaft support portion 44 is a member for pivotally supporting a lock lever member 50 (which constitutes the lock mechanism K), which will be described later, so as to be slidable.
A second shaft protrusion 44 a is formed at the tip (inner end) of the second lock lever shaft support portion 44.
The second shaft protrusion 44a is a substantially spherical dome-shaped protrusion protruding rearward (see FIG. 6 and the like).
FIG. 6 is “an explanatory diagram showing a support state of the first shaft protrusion 34 a” and explains “the first shaft protrusion 34 a”. The configuration of the first shaft protrusion 34 a and the second shaft protrusion 44 a is as follows. Since it is the same structure, this FIG. 6 is applicable also to description of the 2nd axial protrusion 44a as it is.
Further, the second lock lever shaft support portion 44 is also formed by cutting and raising the meat portion existing in the lock lever through-hole 43 and bending it inward, and the front side of the lock lever through-hole 43 It is bent and raised inside.

  In addition, in the free end (upper side end) of the inner second inclined portion 122c constituting the inner rail member 122, a position facing the lock lever through hole 43 is rectangular so as to open upward. A plurality of lock claw insertion portions 45 that are notched are formed in parallel. This number is the same as the number of lock claws 154a described later (four in this example).

  When the outer member attaching portion 121a and the inner member attaching portion 122a are stacked, the first lock lever shaft support portion 34 protrudes inward from the rear end portion of the lock lever through hole 43, and these The lock lever member 50 is pivotally supported with respect to the upper rail 12 by the first lock lever shaft support portion 34 and the second lock lever shaft support portion 44.

<Lock mechanism>
Here, the lock mechanism K will be described.
The lock mechanism K includes a lock lever member 50 and a handle 51.
The lock lever member 50 normally includes a hole formed in the inner second inclined portion 122c constituting the inner rail member 122 and a hole formed in the lower rail main body hanging portion 114 constituting the lower rail 11. By penetrating (see FIG. 3), the upper rail 12 is restricted from sliding.

The lock lever member 50 includes a handle end mounting portion 151, a first shaft mounting portion 152, a second shaft mounting portion 153, and a claw portion 154.
The handle end portion mounting portion 151 is a rectangular flat plate portion, and its inner end portion is slightly raised upward.
Then, in the front-rear direction of the outer end portion of the handle end portion mounting portion 151, a first shaft mounting portion 152 (rear side) and a second shaft mounting portion 153 (front side) are respectively erected upward. .
The first shaft mounting portion 152 and the second shaft mounting portion 153 face each other with the handle end portion mounting portion 151 interposed therebetween in the front-rear direction.

A first shaft projection support portion 152 a is formed at the upper end portion of the first shaft attachment portion 152.
As shown in FIG. 6, the first shaft protrusion support portion 152a is a hole having an inner wall formed in a tapered shape.
That is, an inner wall surface is formed on the first shaft protrusion support portion 152a so as to extend along the outer surface of the first shaft protrusion 34a formed so as to protrude in a spherical dome shape, and the outer surface of the first shaft protrusion 34a is completely fitted. Instead, the first shaft protrusion 34a is configured to be rotatable within the first shaft protrusion support portion 152a.
The term “along the outer surface” means at least a shape that becomes a contact surface of the spherical dome-shaped outer surface, and for example, a hole portion that is formed in a substantially truncated cone shape is assumed.

Further, an inner side of the upper end portion of the first shaft attaching portion 152 is formed with a spring lower fixing hook 152b that is notched so as to open downward and is formed in a hook shape. The lower end of the coil spring W2 is engaged with the unsprung fixing hook 152b.
The claw portion 154 is a U-shaped hook that extends from the outer end portion of the handle end portion mounting portion 151 while curving further outward and downward.

  That is, the claw portion 154 extends while descending further outward from the outer end portion of the handle end portion mounting portion 151 and then curves and extends while descending slightly toward the front portion. It is a hook.

Further, a second shaft projection support portion 153 a is formed at the upper end portion of the second shaft attachment portion 153.
As shown in FIG. 6, the second shaft protrusion support portion 153a is a hole having an inner wall formed in a tapered shape.
Note that FIG. 6 illustrates the “first shaft protrusion support portion 152a” as “an explanatory view showing the support state of the first shaft protrusion 34a”, but the first shaft protrusion support portion 152a and the second shaft protrusion Since the structure of the support part 153a is the same, this FIG. 6 can be applied to the description of the second shaft projection support part 153a as it is.
That is, the second shaft protrusion support portion 153a has an inner wall surface that extends along the outer surface of the second shaft protrusion 44a that is formed in a spherical dome shape so that the outer surface of the second shaft protrusion 44a is completely fitted. Instead, the second shaft protrusion 44a is configured to be rotatable within the second shaft protrusion support portion 153a.

A plurality of lock claws 154 a are formed on the free end side disposed below the handle end portion mounting portion 151.
The lock claws 154a are formed in a rectangular shape, and a plurality of lock claws 154a (four in this example) are formed in parallel at equal intervals on the free end side of the handle end portion mounting portion 151. Yes.

The free end of the handle 51 is placed on the handle end placing portion 151 that constitutes the lock lever member 50.
The handle 51 is configured to include slide device held portions 51a and 51a disposed substantially in parallel and an operation portion 51b that connects the same direction side ends of the slide device held portions 51a and 51a. .
That is, the handle 51 is a rod-like member that is bent into a substantially U shape by the slide device held portions 51a and 51a and the operation portion 51b.
The free end portions of the slide device held portions 51 a and 51 a are supported by the handle end placement portion 151 constituting the upper rails 12 and 12 and the lock lever member 50.

≪Combination≫
The outer rail member 121 and the inner rail member 122 configured as described above, and the lock mechanism K are assembled as follows.
First, outer rail member 121 and the inner rail member 122 is assembled by laminating the outer member preparative mounting portion 121a and the inner member mounting portion 122a in the vehicle width direction.
At this time, as described above, the second holding portion 41 and the first holding portion 31 are disposed in the front-rear direction of the communication hole between the first hole portion H1 and the second hole portion H2, and the spring locking portion through hole 42 is provided. From, the 1st spring latching | locking part 32 protrudes toward the inner side.
Further, at this time, the first lock lever shaft support portion 34 and the second lock lever shaft support portion 44 protrude inward in the front-rear direction of the lock lever through hole 43.

In this state, as shown in FIG. 4, wire springs W1 is first tip spring locking Setsu Ri-away portion 31d, the first holding recesses 31a downward passage, the first upper portion spring locking slit 31b, the first upper rear Spring locking slit 32a, first rear lower spring locking slit 32b, first lower spring locking slit 31c, second lower spring locking slit 41c, second holding recess 41a lower passage, second tip spring It is spanned in the order of the locking notches 41d.

In addition, a first lock lever shaft support portion 34 and a second lock lever shaft support portion 44 project inward from the front-rear direction end portion of the lock lever through hole 43, and these first lock lever shaft support portions The lock lever member 50 is pivotally supported by the second lock lever shaft support portion 44 and the second lock lever shaft 44.
First, the lock lever member 50 inserts the first shaft protrusion 34a into the first shaft protrusion support portion 152a with the free end portion of the handle end portion mounting portion 151 facing inward, and the second shaft protrusion 44a is inserted into the second shaft protrusion 44a. By being inserted into the biaxial protrusion support portion 153a, it is attached to the upper rail 12 so as to be swingable.

Then, the upper end portion of the coil spring W2 is engaged with the spring upper fixing hole 35, and the lower end portion thereof is engaged with the lower spring fixing hook 152b of the lock lever member 50.
At this time (especially, see FIG. 3 etc.), the lock claw 154a formed at the lower end of the claw portion 154 passes through the lock claw portion through hole 46 formed in the lower rail body hanging portion 114 disposed inside. And the free end part protrudes from the lock nail | claw part insertion part 45 formed in the inner side 2nd inclination part 122c which comprises the inner rail member 122. As shown in FIG.
Thus, in this state, since the upper rail 12 is fixed to the lower rail 11 by the lock claw 154a, the upper rail 12 cannot slide with respect to the lower rail 11.

After the lock lever member 50 is attached in this way, the end of the slide device held portion 51a of the handle 51 is disposed.
The end of the slide device held portion 51a is inserted between the first holding recess 31a and the wire spring W1 extending below it, and between the second holding recess 41a and the wire spring W1 extending below it, and freely The end side is mounted on the handle end mounting portion 151 of the lock lever member 50.
At this time, the front end (inner end) of the lock lever positioning piece 33 is in contact with the side surface of the slide device held portion 51a, so that the front end of the handle end placement portion 151 (the front end slightly rises). And the lock lever positioning piece 33 regulates the position of the slide device held portion 51a.

In this state, that is, in the normal state (the state shown in FIG. 3), no force is applied to the wire spring W1 and the coil spring W2.
In this state, when the up pulling the operating portion 51b of the handle 51 by an external force (operation by the passenger or the like, etc.), a slide device held portion 51 a is a free end of the handle 51, sinks downward.
Thereby, the handle | steering-wheel edge part mounting part 151 is pressed below and sinks, and the nail | claw part 154 raises in connection with this.

As the claw portion 154 rises, the lock claw 154a formed at the lower end is locked to the lock claw portion insertion portion 45 formed in the inner second inclined portion 122c and the lower rail main body hanging portion 114. The upper rail 12 is allowed to slide through the claw portion through hole 46. That is, the lock is released.
When the external force applied to the handle 51 is released, the lock lever member 50 returns to the normal state (the locked state in FIG. 3) by the restoring force of the wire spring W1 and the coil spring W2.

As described above, in this embodiment, when the handle 51 for operating the lock mechanism K of the seat slide device 10 is held, the lock lever positioning piece 33, the first lock lever shaft support portion 34, the second lock lever shaft support. The part 44 was cut and raised from the meat part of the outer member attaching part 121a and the inner member attaching part 122a.
Therefore, it is not necessary to prepare a separate bracket or the like to support the handle 51, which is advantageous in terms of cost and workability, and can reduce the weight of the bracket conventionally used. It becomes possible.

U Seat unit S Vehicle seat 10 Seat slide device 10A Seat track 11 Lower rail 111 Lower rail body bottom surface 112 Lower rail body side surface 113 Lower rail body collar 114 Lower rail body hanging part 46 Lock claw part through hole T Sliding groove 12 Upper rail 121 Outside Rail member 121a Outer member mounting portion (member mounting portion)
31 First holding part (holding part)
31a First holding recess
31b 1st upper part spring locking slit
31c 1st lower part spring locking slit
31d First tip end spring locking notch
32 First spring locking part
32a First rear upper spring locking slit
32b First rear lower spring locking slit
33 Lock lever positioning piece
34 First lock lever shaft support
34a First shaft protrusion
H1 1st hole
H3 3rd hole part 121b Outer side 1st inclination part (sliding means contact part)
121c Outside second inclined portion (sliding means contact portion)
121d Top wall
35 Spring top fixing hole 122 Inner rail member 122a Inner member attachment portion (member attachment portion)
41 Second holding part (holding part)
41a Second holding recess
41b Contact piece
41c Second lower part spring locking slit
41d Second end portion spring locking notch
42 Spring locking part through hole
43 Lock lever through hole
44 Second lock lever shaft support
44a Second shaft protrusion
H2 2nd hole 122b Inner 1st inclination part (sliding means contact part)
122c Inner second inclined portion (sliding means contact portion)
45 Lock claw portion insertion portion 13 Slide mechanism 13a Retainer 13b First rotor 13c Second rotor 13d First rotor holding portion 13e Second rotor holding portion K Lock mechanism 50 Lock lever member 151 Handle end portion mounting portion 152 First shaft mounting part
152a First shaft projection support
152b Unsprung fixing hook 153 Second shaft mounting portion
153a Second shaft projection support portion 154 Claw portion
154a Lock claw 51 Handle 51a Slide device holding part 51b Operation part W1 Wire spring W2 Coil spring

Claims (2)

A seat slide device for sliding a vehicle seat in the vehicle longitudinal direction,
The seat slide device includes a lower rail that is fixed to a vehicle floor, and an upper rail that is slidable in the vehicle longitudinal direction with respect to the lower rail.
The seat slide device is equipped with a lock mechanism for prohibiting the upper rail from sliding relative to the lower rail,
The lock mechanism includes a lock lever member that swings so as to pass through or leave a hole formed in the lower rail and the upper rail, and a handle that inputs a force for swinging the lock lever member. And
The upper rail is configured to include a sliding means abutting portion that is disposed inside the lower rail and slides, and a member mounting portion that protrudes above the lower rail,
A lock lever shaft support portion for attaching the lock lever member is formed on the member attachment portion so as to protrude.
The upper rail is composed of an outer upper rail and an inner upper rail,
The member mounting portion includes an outer member mounting portion that configures the outer upper rail, and an inner member mounting portion that configures the inner upper rail, and the lock lever shaft support portion is formed from the outer member mounting portion. a first lock lever shaft support portion that is cut and raised from the inner member mounting portion so as to output one side edge or et collision of the front side and rear side of the hole formed in the inner member mounting portion A second lock lever shaft support portion cut and raised ,
The first lock lever shaft support portion protrudes through the other side of the front side and the rear side of the hole,
2. The seat slide device according to claim 1, wherein the second lock lever shaft support portion and the first lock lever shaft support portion are arranged in parallel in the front-rear direction. The lock lever member is formed with a shaft attachment portion connected to the upper rail,
The shaft mounting portion is formed with a shaft support protrusion support portion, and the lock lever shaft support portion is formed with a shaft protrusion,
The shaft protrusion is a protrusion protruding in a spherical dome shape, and the shaft support protrusion support is a hole having an inner wall formed in a tapered shape along the outer surface of the shaft protrusion,
The seat slide device according to claim 1, wherein the shaft protrusion is rotatably held in the shaft support protrusion support portion.

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