JP2584273Y2 - Vehicle seat slide device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a vehicle seat slide device.

[0002]

2. Description of the Related Art Conventionally, a vehicle seat slide device is composed of a lower rail fixed to a vehicle body side, and an upper rail slidably mounted on the lower rail.
It is known that a seat cushion frame for a seat cushion is attached to the upper rail via a pair of support brackets fixed at predetermined intervals in the front-rear direction of the vehicle body.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional vehicle seat slide device, when a box or the like for storing goods is installed below the seat cushion, the position of the seat cushion becomes high, and the belt anchor for the seat belt is mounted. It cannot be mounted on the seat slide device and must be mounted on the seat cushion frame for the seat cushion. However, in the case where a belt anchor is attached to a seat cushion frame via an anchor bracket, when an excessive load is applied to the seat belt at the time of a vehicle collision or the like, the upper rail is provided via the belt anchor and a pair of support brackets. Excessive tensile load acts on. For this reason, the upper rail, particularly the upper rail on the anchor bracket side, is deformed by the tensile load, and the slidability of the upper rail with respect to the lower rail is reduced. In some cases, the upper rail may be separated from the lower rail. Therefore, it is necessary to secure the tensile strength of the upper rail by increasing the plate thickness of the upper rail itself so as to sufficiently cope with the tensile load, which increases the weight and goes against the weight reduction of the vehicle and increases the cost. There was a problem.

[0004] The present invention has been made to solve the above-mentioned problems of the prior art.
It is an object of the present invention to provide a vehicle seat slide device capable of dispersing a tensile load acting on an upper rail toward a vehicle body.

[0005]

In order to achieve the above object, in the seat slide device according to the first aspect of the present invention, an upper rail slidably mounted on a lower rail fixed to the vehicle body is provided in front and rear of the vehicle body. Ri Na fixed to the seat cushion frame via a pair of support brackets arranged at predetermined intervals in the direction, the seat cushion
Attach a seat belt belt anchor to the frame
A vehicle seat slide device to which an anchor bracket is fixed for fixing an upper portion to the seat cushion frame and a lower portion capable of engaging the lower rail with an intermediate portion between the pair of support brackets. And the reinforcing means is provided as
Approximately matches the tensile load direction acting on the belt anchor
It is characterized by being inclined as follows .

In the seat slide device according to the second aspect,
Reinforcing means, the reinforcing plate for fixing the upper to the seat cushion frame, is composed of a lower attached to the lower portion of the reinforcing plate from the lockable-formed hook plate to the lower rail, the said reinforcing plate off
Tension plate acting on the belt anchor
It is characterized by being inclined so as to substantially coincide with the direction .

[0007] In the seat slide device of the third aspect,
The reinforcing means has an upper portion fixed to the seat cushion frame, a lower portion formed to be engageable with the lower rail , and a tensile load direction acting on the belt anchor.
It is characterized by comprising a reinforcing plate which is inclined so as to substantially coincide with the above .

Furthermore in seat slide device according to claim 4, and engaging with the locking portion of the reinforcing means and the belt anchor
A locking plate provided with an engaging portion inclined so as to substantially coincide with a tensile load direction acting on the lower rail is attached to the lower rail, and a locking portion of the reinforcing means is attached to the engaging portion of the locking plate. It is characterized by being locked.

[0009]

When an excessive load is applied to the seat cushion frame, part of the load is distributed to the vehicle body by the reinforcing means. As a result, the tensile load acting on the upper rail can be significantly reduced. Also, sheet cook
Can reduce the deformation of the frame.
Therefore, the position of the belt anchor can be kept constant,
Always improve the restraint of the occupant by the seat belt
Can be.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIGS. 1 to 4 relate to a first embodiment of the present invention. FIG. 1 is an explanatory front view of a vehicle seat slide apparatus, FIG. 2 is an explanatory view taken along the line II-II of FIG. 1, and FIG. III-III of 1
4 is an explanatory perspective view of the retainer shown in FIG. 3.

In FIG. 1, reference numeral E denotes a vehicle seat slide device which moves an upper rail 20 slidably mounted on a lower rail 10 fixed to the vehicle body side in the front-rear direction of the vehicle body (arrows F and R in FIG. 1). Direction)) and a pair of support brackets 40A, 40B arranged at a predetermined interval
And is fixed to the seat cushion frame 50.

[0013] In this invention, in particular, the reinforcing means 60 having an upper part fixed to the seat cushion frame 50 and a lower part capable of being locked to the lower rail 10 is positioned at an intermediate part between the pair of support brackets 40A, 40B. It is characterized by being provided.

The reinforcing means 60 comprises a reinforcing plate 61 for fixing the upper portion to the seat cushion frame 50, and a hook plate 62 attached to the lower portion of the reinforcing plate 61 and formed at the lower portion so as to be able to be locked to the lower rail 10. It is characterized by doing.

Further, the structure of the first embodiment of the present invention will be described in detail.

The lower rail 10 has a pair of left and right sides (only one is shown), and is fixed to the floor 11 of the vehicle body via legs 12A and 12B at predetermined intervals in the front-rear direction. Side walls 14, 15 of different lengths in which both side edges of the base portion 13 are bent at substantially right angles to the floor side, and end edges of the side wall portions 14, 15 are bent in the same direction in an inverted U-shape. Lower flanges 16, 17
It is composed of

The upper rail 20 has the same cross-sectional shape as the lower rail 10, and includes a base 23,
Side walls 24, 25 of different lengths in which both side edges of the base 23 are bent at substantially right angles to the floor side, and both side walls 24, 2
5 are formed in the same direction as upper flanges 26 and 27 in the same direction.

The lower flanges 16 and 17 and the upper flanges 26 and 27 are mutually engaged via a slider 30 made of a synthetic resin material to form a pair of left and right sliding portions 3.
1, 32 are formed. Further, the back surfaces 31a, 32a of the pair of left and right sliding portions 31, 32 and the lower rail 10
And a pair of rotating rollers 33 and 34 are interposed between the base rails 13 and 23 of the upper rail 20, respectively.
The pair of rotating rollers 33 and 34 are connected and supported via a retainer 35, and are arranged, for example, in pairs at predetermined intervals in the front-rear direction.

Projecting shafts 36 projecting from both left and right side surfaces are implanted at the axial centers of the rotating rollers 33 and 34, and the projecting shafts 36 are opposed to the side walls 14, 15, and 24, 2 respectively.
5, the movement of the rotating rollers 33, 34 in the left-right direction is restricted. The retainer 35 includes a flat plate portion 35a and protrusions 35b formed by bending upper and lower side edges of the flat plate portion 35a in opposite directions.
The rotation rollers 33 and 34 are accommodated between the projections 35b and 35c, and the respective projecting shafts 36 are fitted into through holes 35d and 35e formed in the flat plate 35a. Further, the movement of the retainer 35 in the front-rear direction is restricted by stoppers (not shown) provided on the lower rail 10 and the upper rail 20.

The pair of support brackets 40A, 40B are U
The upper rail 20 includes bolts, which are formed on the front and rear portions of the base 23 of the upper rail 20. The side walls 40a, 40b are opposed to each other, and the connecting portions 40c connect the side walls 40a, 40b. Each is fixed by a nut or the like. The side walls 40a and 40b are welded to a seat cushion frame 50 on which a seat cushion (not shown) is mounted, and a seat belt anchor (not shown) is provided at a rear portion of the seat cushion frame 50. An anchor bracket 52 having a belt anchor attaching portion 51 for attaching the anchor is fixed.

The reinforcing means 60 includes a pair of support brackets 4.
0A, 40B, especially the rear support bracket 4
0B, the reinforcing plate 61,
The hook plate 62 is formed.

The reinforcing plate 61 has an arc-shaped base 61a.
And a bent portion 61b bent at an obtuse angle from the base 61a toward the floor 11 side. The base 61a is wound around the seat cushion frame 50 and welded. Further, the inclination angle of the bent portion 61b is set so as to substantially coincide with the direction of the tensile load acting on the belt anchor by the seat belt. The hook plate 62 has a base 62
a, an end of the base 62a is bent toward the floor 11 side at an obtuse angle at the same inclination angle as the bent portion 61b of the reinforcing plate 61, and a tip of the bent portion 62b is A hook portion 62c as a locking portion of the reinforcing means 60 formed in a U-shape;
The bent portion 62b is fixed to the bent portion 61b of the reinforcing plate 61 by a bolt 63 and a nut 64. The hook plate 62 has a rib 62d for reinforcement.

The locking plate 65 having an engaging portion 65b for locking with the hook portion 62c of the hook plate 62 has the same base portion 65a as the bent portion 62b of the hook plate 62 from the base portion 65a to the floor 11 side. An engagement portion 65b bent at an inclination angle is provided.
0, and the engaging portion 65b is connected to the hook plate 6 no matter where the upper rail 20 moves.
The entire length is formed long so as to be engaged with the second hook portion 62c. Also, the base 65a of the locking plate 65
At the rear portion, a mounting portion 65c extending toward the floor 11 is formed, and the mounting portion 65c is fixed to the floor 11.

Next, the operation of the first embodiment of the present invention will be described.

When an excessive load is applied to the belt anchor attachment portion 51 at the time of a vehicle collision or the like, a part of this load is transmitted to the upper rail 20 via the pair of support brackets 40A and 40B, but most of the load is transmitted. Reinforcement plate 6
1, distributed to the floor 11 side via the hook plate 62 and the locking plate 65. Thereby, the tensile load acting on the upper rail 20 can be greatly reduced, the deformation of the upper rail 20 can be almost eliminated, the separation of the upper rail 20 from the lower rail 10 can be prevented, and the slidability is always good. Can be kept. Further, the upper rail 20 can be made thinner to reduce the weight.

The bent portion 61b of the auxiliary plate 61,
Bent portion 62b of hook plate 62 and locking plate 6
Since the angle of inclination of the engagement portion 65b of 5 is set in the direction in which the belt anchor is indexed by the seat belt, the deformation of the seat cushion frame 50 can be reduced. Thus, the position of the belt anchor can be kept constant, and the restraint of the occupant by the seat belt can always be improved.

FIG. 5 is a sectional explanatory view corresponding to FIG. 3 according to a second embodiment of the present invention. In the second embodiment, the reinforcing plate 61 and the hook plate 62 shown in the first embodiment are integrally formed. ing. That is, the reinforcing plate 61A serving as the reinforcing means 60 is configured such that the arc-shaped base 61c as the upper portion is
It is wound around the seat cushion frame 50 and welded.
Are engaged with the engaging portion 65b.

According to the second embodiment, the manufacturing cost of the reinforcing means 60 can be reduced as compared with the first embodiment, and the number of mounting steps can be reduced.

Other constructions and operations are the same as those shown in the first embodiment, and a description thereof will be omitted.

In the above embodiment, the locking plate 65 and the legs 12A and 12B are provided separately.
As shown in FIG. 7, the leg 12 may be formed integrally with the locking plate 65A.

[0031]

As described above, according to the present invention, when an excessive load is applied to the seat cushion frame due to a vehicle collision or the like, a part of the load can be distributed to the vehicle body by the reinforcing means. As a result, the tensile load acting on the upper rail can be reduced, deformation of the upper rail can be eliminated, separation of the upper rail from the lower rail can be prevented, and slidability can always be kept good. In addition, the thickness of the upper rail can be reduced to reduce the weight. In addition, reinforcing means
It almost matches the direction of the tensile load acting on the tilt anchor.
The seat cushion frame
Can be smaller, which allows the belt anchor
Position can be kept constant,
The restraint of members can always be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory front view of a vehicle seat slide device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view taken along the line II-II in FIG.

FIG. 3 is an enlarged cross-sectional explanatory view taken in the direction of arrows III-III in FIG. 1;

FIG. 4 is an explanatory perspective view of a retainer shown in FIG. 3;

FIG. 5 is an explanatory sectional view corresponding to FIG. 3 according to a second embodiment of the present invention;

FIG. 6 is an explanatory front view showing a modification of the locking plate.

FIG. 7 is an explanatory view taken in the direction of arrows VII-VII in FIG. 6;

FIG. 8 is an explanatory diagram viewed from the arrow VIII-VIII in FIG. 7;

[Explanation of symbols]

 E Vehicle seat slide device 10 Lower rail 12 Leg 12A Leg 12B Leg 20 Upper rail 40A Support bracket 40B Support bracket 50 Seat cushion frame 51 Belt anchor attachment part 52 Anchor bracket 60 Reinforcement means 61 Reinforcement plate 61A Reinforcement plate 62 Hook plate 62c Reinforcement means Locking part (hook part) 65 locking plate 65A locking plate

Claims (4)

(57) [Scope of request for utility model registration] An upper rail slidably mounted on a lower rail fixed to a vehicle body side is fixed to a seat cushion frame via a pair of support brackets arranged at a predetermined interval in the front-rear direction of the vehicle body. Ri name was, the
The seat cushion frame has a seat belt
Anchor bracket for mounting the anchor
And a seat slide device for a vehicle, as well as secure the top to the seat cushion frame, is provided with allowed position reinforcing means configured to be engaged with the lower to the lower rail in the middle portion of the pair of support brackets becomes ,Before
The reinforcing means is a tension load acting on the belt anchor.
A seat slide device for a vehicle, wherein the seat slide device is inclined so as to substantially coincide with a direction . Wherein the reinforcing means comprises an upper and a reinforcing plate fixed to the seat cushion frame, a hook plate which the lower formed to be engaged with the lower rail attached to the lower portion of the reinforcing plate, the reinforcing flop
Rate and the hook plate are attached to the belt anchor.
The vehicle seat slide device according to claim 1, wherein the vehicle is inclined so as to substantially coincide with a tensile load direction to be used. 3. The reinforcing means has an upper part fixed to the seat cushion frame, a lower part engageable with the lower rail , and acts on the belt anchor.
2. The vehicle seat slide device according to claim 1, wherein the reinforcement plate is constituted by a reinforcing plate inclined so as to substantially coincide with a tensile load direction . Wherein the locking portion of the reinforcing means and the locking and and the bell
So that it almost matches the direction of the tensile load acting on the anchor.
4. A locking plate having an engaging portion inclined to the lower rail is attached to the lower rail, and a locking portion of the reinforcing means is locked to the engaging portion of the locking plate. The seat slide device for a vehicle according to the above.