JPH10138802A - Power slide device for automobile seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power slide device for an automobile seat which prevents a harness from dragging, even if a seat is slid in the front/rear direction, is superior in external appearance, and eliminate any possibility of catch the leg of an occupant and a luggage. SOLUTION: A power slide device is so constituted that a harness 21 having elasticity is arranged in a floor 3 in the side of a lower rail (fixed rail) 4 in the same direction of a fixed rail 4 and the harness 21 is expanded/contracted by the end part 27 of a bracket 25 which is interlocked with an upper rail (movable rail) 2. The harness 21 is not exposed to the outside so as to provide with superiority in its external appearance and this constitution eliminates any possibility of catching the leg of an occupant and a luggage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a power slide device for a vehicle seat.

[0002]

2. Description of the Related Art There is known a power slide device for sliding an automobile seat back and forth by an electric motor (for example, see Japanese Utility Model Laid-Open No. 1-99734). Generally, as a power slide device of this type, a pair of left and right fixed rails fixed to a floor and a pair of left and right movable rails fixed to a seat are combined and connected to a power supply via a harness of a predetermined length. The electric motor is mounted on a movable rail, and the movable rail is slid back and forth with respect to the fixed rail together with the seat by the driving force of the electric motor.

In particular, recently, with the development of the slide mechanism, the seat has been lengthened, and the maximum sliding distance of the seat has tended to be increased.

[0004]

However, in such a conventional technique, the length of the harness becomes longer as the seat becomes longer, and the harness becomes longer as the seat slides back and forth. Because it is dragged on the floor, it is not preferable in terms of appearance.

[0005] Further, depending on the position of the seat, the harness may be deflected, and the foot or luggage of the occupant may be caught on the harness in the deflected state.

The present invention has been made by paying attention to such a conventional technique, and it is not necessary to drag a harness even if a seat is slid forward and backward, which is excellent in appearance and is excellent in occupant's foot and An object of the present invention is to provide a power slide device for a vehicle seat that does not have a risk of luggage being caught.

[0007]

According to the first aspect of the present invention,
A pair of left and right fixed rails fixed to the floor and a pair of left and right movable rails fixed to the seat are combined, and an electric motor connected to a power supply via a predetermined length of harness is installed on the movable rails. In a power sliding device for a vehicle seat for sliding a movable rail together with a seat back and forth with respect to a fixed rail by a driving force of an electric motor, a harness having elasticity is provided in a floor beside the fixed rail in the same direction as the fixed rail. , And the harness is expanded and contracted by the tip of a bracket that moves with the movable rail.

According to the first aspect of the present invention, since the harness routed in the floor is expanded and contracted by the tip of the bracket that moves together with the movable rail, the harness is not exposed to the outside and has a good appearance. In addition, the foot and luggage of the occupant do not get caught.

According to a second aspect of the present invention, there is provided the power slide apparatus for an automobile seat according to the first aspect, wherein a harness rail having an opening extending in a longitudinal direction is buried in a floor beside the fixed rail. A harness is routed in the harness rail, and a tip of a bracket for expanding and contracting the harness is provided in the harness rail via a connecting piece having a width capable of passing through the opening.

According to the second aspect of the present invention, in addition to the effect of the first aspect, since the harness is routed in the harness rail, the harness does not catch on the periphery of the floor, and is in a stable expansion and contraction state. Is obtained.

Further, since it is only necessary to form an opening in the harness rail, the rigidity of the harness rail is high, and if the opening is formed narrow, dirt and dust hardly enter the harness rail.

According to a third aspect of the present invention, there is provided the power sliding device for an automobile seat according to the second aspect, wherein the opening is formed in an upper surface of a harness rail.

According to the third aspect of the invention, in addition to the effect of the second aspect, since the opening is formed in the upper surface of the harness rail, the state of the harness in the harness rail can be easily checked from the opening.

According to a fourth aspect of the present invention, there is provided the power slide device for an automobile seat according to the second aspect, wherein the opening is formed in a side surface of a harness rail.

According to the fourth aspect of the present invention, in addition to the effect of the second aspect, since the opening is formed in the side surface of the harness rail, dust and dust are less likely to enter the harness rail from the opening.

According to a fifth aspect of the present invention, a pair of left and right fixed rails fixed to a floor and a pair of left and right movable rails fixed to a seat are combined and connected to a power supply via a predetermined length of harness. An electric motor mounted on a movable rail, and the movable rail slides back and forth with respect to the fixed rail together with the seat by a driving force of the electric motor. And the harness is expanded and contracted by the tip of a bracket that moves with the movable rail.

According to the fifth aspect of the present invention, since the harness is routed in the fixed rail, a separate harness rail is not required, and the number of parts can be reduced. Work is also easier.

According to a sixth aspect of the present invention, there is provided a power slide device for a vehicle seat according to any one of the first to fifth aspects, wherein the harness has a stretchable curl shape having a predetermined diameter, A hole smaller in diameter than the curled shape is formed at the tip of the bracket, and a harness is inserted through the hole.

According to the invention of claim 6, claims 1 to 1 are provided.
5. In addition to the effects described in any one of 5 above, when the harness is compressed and contracted, the curl-shaped portion of the harness is pushed by the surface of the front end portion, and when the harness is extended, the harness is extended and contracted because it is pulled by the hole at the front end portion. However, no load is applied to the connection point to the electric motor, and the protection of the harness is excellent.

According to a seventh aspect of the present invention, there is provided the power sliding device for a vehicle seat according to any one of the first to sixth aspects, wherein the fixed rail is embedded in a floor. .

According to the invention of claim 7, claims 1 to
In addition to the effect described in any one of the above items 6, the fixed rail is buried in the floor, so that the floor can be flattened, and the appearance and getting on and off can be improved.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. In addition, in the figure, Y is the front-rear direction, for example, in FIG. X is the left-right direction.

FIG. 1 to FIG. 4 show a first embodiment of the present invention. Reference numeral 1 denotes a seat of an automobile, and an upper rail 2 as a pair of left and right “movable rails” is fixed to a lower surface of the seat 1.

On the other hand, a lower rail 4 as a pair of left and right “fixed rails” is fixed to the floor 3.
The upper rail 2 is slidably combined with the upper rail 2.

First, a mechanism for sliding the seat 1 back and forth will be described.

The lower rail 4 has a cross-sectional shape having a narrow opening 5 on the upper surface, and is entirely buried in the floor 3, and the upper surface of the lower rail 4 and the surface of the floor 3 are flush with each other. .

A resin cover 6 is provided on the upper surface of the lower rail 4 so as to be flush with the floor 3 (not shown in FIG. 1).
Is formed.

With such a structure, the surface of the floor 3 is flattened, and not only is the appearance good, but also there is no possibility that the foot is caught on the lower rail 4 when getting on and off.

Further, since the opening 5 of the lower rail 4 is narrow, it prevents the heel of the high heel from entering,
Garbage is less likely to enter the lower rail 4.

Further, a plurality of grooves 8 are formed on the bottom surface of the lower rail 4 at predetermined intervals along the longitudinal direction. The groove 8 is formed in an inclined state, and the grooves 8 formed in the left and right lower rails 4 are inclined in directions symmetric to each other (the right lower rail 4 is not shown in FIG. 2). .

The lower part of the upper rail 2 is inserted into the cross section of the lower rail 4 via the opening 5. A cutout 9 is partially formed in the upper rail 2 from above, and a worm gear 10 having a predetermined length is rotatably held in the cutout 9. The worm gear 10 is also held in the notch 9 so as to be located in the cross section of the lower rail 4. The worm gear 10 has a shape having first worm teeth 11 and second worm teeth 12.

The first worm tooth 11 meshes with the groove 8 of the upper rail 2. A worm wheel 13 provided in a deceleration gear box G (see FIG. 3) meshes with the second worm teeth 12. The worm wheel 13
It is inserted into the lower rail 4 from the opening 5 and meshes with the second worm tooth 12. Since the worm wheel 13 is inserted into the lower rail 5 from the opening 5, the opening 5
Can maintain a narrow width.

The gear box G is provided in a concave portion 14 formed on the lower surface of the seat 1. In addition to the worm wheel 13, a spur gear 15 that rotates coaxially with the worm wheel 13 and another spur gear 16 are provided. , A drive worm wheel 17 is also provided. Another spur gear 16 and the drive worm wheel 17 are connected to the right side structure by a connection shaft 18.

An electric motor 1 is mounted on the upper rail 2.
The driving worm gear 20 provided on the rotating shaft of the electric motor 19 meshes with the driving worm wheel 17.

Accordingly, the driving force of the electric motor 19 is transmitted to the worm gear 10 via various gears in the gear box G, and rotates the worm gear 10.

When the worm gear 10 rotates, the upper rail 2 slides back and forth with respect to the lower rail 4 together with the seat 1 because the worm gear 10 is engaged with the groove 8 of the lower rail 4. Since the groove 8 is formed symmetrically, rattling of the upper rail 2 in the left-right direction is suppressed.

Since the worm gear 10 and the groove 8 are both provided in the lower rail 4, the worm gear 1
Dirt and dust are hard to adhere to 0 etc. There is no possibility that the cover or the carpet of the seat 1 gets caught in the movable part.

Next, the wiring structure of the harness 21 for connecting the electric motor 19 and a power source (not shown) will be described.

A harness rail 22 is buried in the floor 3 on the side (inside) of the lower rail 4. The harness rail 22 is provided in parallel with the lower rail 4,
The lower rail 4 is connected to the lower rail 4 by the resin cover 6. The harness rail 22 also has a cross-sectional shape having an opening 23 on the upper surface like the lower rail 4, and a similar opening 24 is formed in a corresponding portion of the resin cover 6.

The harness 21 is routed from the front in the harness rail 22. The harness 21 has a predetermined diameter D
It has a curled shape (see FIG. 4) and is stretchable along the longitudinal direction.

On the other hand, a base end of a bracket 25 bent approximately in a crank shape is fixed to the upper part of the upper rail 2. This bracket 25 has a vertical flange 26 on the rear side.
The tip portion 27 has a rectangular shape corresponding to the cross-sectional shape of the harness rail 22 and is provided in the harness rail 22 via a narrow connecting piece 28 passing through the opening 23. Further, a guide hole 29 which is flanged up is formed at the base of the connecting piece 28.

A hole 30 having a diameter smaller than the diameter D of the curl of the harness 21 is formed at the tip end portion 27 of the bracket 25. The harness 21 is inserted through the hole 30, and the guide hole 29 is further inserted. Then, it is connected to the electric motor 19 along the bracket 25.

When the upper rail 2 (seat 1) is slid back and forth by the electric motor 19, the bracket 25 also slides back and forth with the upper rail 2. When the upper rail 2 is slid rearward to extend the harness 21, the harness 21 is inserted into the hole 30 of the distal end 27.
Then, the harness 21 can be protected because the pulling load is not applied to the connection portion to the electric motor 19 because the pulling is performed by the guide hole 29 at the upper portion.

When the upper rail 2 is slid forward to compress the harness 21, the surface of the tip 27 presses the curled portion of the harness 21, so that the harness 21 can be reliably compressed. Further, in this case, the elastic restoring force of the harness 21 to the rear side can be reliably received by the surface of the distal end portion 27, and no load is applied to the harness 21 after the distal end portion 27.

According to this embodiment, since the harness 21 is routed in the harness rail 22 buried in the floor 3, the harness 21 is not exposed to the outside, is excellent in appearance, and is excellent in the foot of the occupant. And luggage are not trapped.

The harness 21 is connected to the harness rail 22
Because it is routed inside, a stable expansion and contraction state can be obtained.
Furthermore, since it is only necessary to form the opening 23 in the harness rail 22, the rigidity of the harness rail 22 is high and the width of the opening 23 is reduced, so that the entry of dust and dirt into the harness rail 22 is suppressed. be able to.

Further, in this embodiment, since the opening 23 is formed on the upper surface of the harness rail 22, this opening 2
3, the state of the harness 21 in the harness rail 22 can be easily checked from above, which is advantageous in terms of maintenance.

In addition, since the lower rail 4 is also buried in the floor 3, the floor 3 can be completely flattened, and the appearance and the getting on and off property are further improved.

FIG. 5 is a diagram showing a second embodiment of the present invention. Note that the same reference numerals are given to portions common to the previous embodiment, and redundant description will be omitted.

In the second embodiment, the harness rail 3
An opening 32 was formed in the side surface of the first harness rail 31 from the opening 32.

Resin cover 35 covering harness rail 31
An opening 36 is formed at a position different from that of the harness rail 31, and a bracket 33 enters the floor 3 from the opening 36.

According to the second embodiment, the opening 32 is formed in the side surface of the harness rail 31, so that the first
Dust and dust are less likely to enter the harness rail 31 through the opening 32 than when formed on the upper surface as in the embodiment.

FIG. 6 is a diagram showing a third embodiment of the present invention. Note that the same reference numerals are given to portions common to the previous embodiment, and redundant description will be omitted.

In the third embodiment, the harness rail is eliminated, and the harness 21 is routed inside the lower rail 37.

Therefore, the lower rail 37 has a shape whose cross section is enlarged inward, and the harness 21 is routed in the enlarged space. Then, a bracket 38 is attached to the lower part of the upper rail 2, and its tip 3
At 9, the harness 21 can be expanded and contracted. The harness 21 is guided to the outside of the lower rail 37 from the lower rail 37 and the openings 41 and 42 of the resin cover 40 via the cutout 9 of the upper rail 2.

According to the third embodiment, the harness 21
Are arranged in the lower rail 37, so that a separate harness rail is not required, the number of parts can be reduced, and the assembling work is simplified because there is no harness rail.

[0057]

According to the first aspect of the present invention, since the harness routed in the floor is expanded and contracted by the tip of the bracket cooperating with the movable rail, the harness is not exposed to the outside and looks beautiful. In addition to being excellent in point, the feet and luggage of the occupant are not trapped.

According to the second aspect of the present invention, since the harness is routed in the harness rail, the harness does not catch on the peripheral portion in the floor, and a stable expansion and contraction state can be obtained. In addition, since it is only necessary to form an opening in the harness rail, the rigidity of the harness rail is high, and if the opening is formed narrow, dust and dust are less likely to enter the harness rail.

According to the third aspect of the present invention, since the opening is formed in the upper surface of the harness rail, the state of the harness in the harness rail can be easily checked from the opening.

According to the fourth aspect of the present invention, since the opening is formed in the side surface of the harness rail, dust and dust are less likely to enter the harness rail from the opening.

According to the fifth aspect of the present invention, since the harness is routed in the fixed rail, a separate harness rail is not required, and the number of parts can be reduced. Work is also easier.

According to the sixth aspect of the present invention, when the harness is compressed and contracted, the curl-shaped portion of the harness is pushed by the surface of the tip, and when the harness is extended, the harness is stretched and contracted. Also, no load is applied to the connection point to the electric motor, which is excellent in protection of the harness.

According to the seventh aspect of the present invention, since the fixed rail is buried in the floor, the floor can be flattened, and the appearance and the getting on and off property are improved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a power slide device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a power slide device.

FIG. 3 is a sectional view taken along the line SA-SA shown in FIG.

FIG. 4 is a perspective view showing a harness rail and a bracket.

FIG. 5 is a sectional view showing a second embodiment of the present invention and corresponding to FIG. 3;

FIG. 6 is a sectional view corresponding to FIG. 3, showing a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 seat 2 upper rail (movable rail) 3 floor 4, 37 lower rail (fixed rail) 19 electric motor 21 harness 22, 31, harness rail 23, 32 opening of harness rail 25, 33, 38 bracket 27, 34, 39 tip 28 connection Piece 30 hole D diameter Y front and back direction X left and right direction

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[Procedure amendment]

[Submission date] October 24, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

The lower part of the upper rail 2 is inserted into the cross section of the lower rail 4 via the opening 5. A cutout 9 is partially formed in the upper rail 2 from above, and a gear unit 10 having a predetermined length is rotatably held in the cutout 9. The gear unit 10 is also positioned in the cross section of the lower rail 4 by being held in the notch 9. This gear unit 10 has the first worm tooth 11
It has a shape having the second screw gear 12.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

The first worm tooth 11 meshes with the groove 8 of the upper rail 2. The second screw gear 12 has a first screw provided in a reduction gear box G (see FIG. 3).
The gear 13 is engaged. The first screw gear 13 has an opening 5
From the second screw gear 1
2 is engaged. The structure in which the first screw gear 13 is inserted into the lower rail 5 from the opening 5 allows the opening 5 to maintain a small width.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

The gearbox G is provided in a recess 14 formed on the lower surface of the seat 1, in addition to the first screw gear 13, spur gear 15, another rotating the first screw gear 13 coaxially And a drive worm wheel 17 are also provided. Another spur gear 16 and drive worm wheel 17
Is connected to the right side structure by a connecting shaft 18.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

Accordingly, the driving force of the electric motor 19 is transmitted to the gear unit 10 via various gears in the gear box G, and rotates the gear unit 10.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

[0036] When the gear unit 10 rotates, the Giayu
Since the knit 10 is engaged with the groove 8 of the lower rail 4, the upper rail 2 slides back and forth with respect to the lower rail 4 together with the seat 1. Since the groove 8 is formed symmetrically, rattling of the upper rail 2 in the left-right direction is suppressed.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Change

[Correction contents]

Since both the gear unit 10 and the groove 8 are provided in the lower rail 4, the gear unit 1
Dirt and dust are hard to adhere to 0 etc. There is no possibility that the cover or the carpet of the seat 1 gets caught in the movable part.

Claims (7)

[Claims] An electric motor connected to a power supply via a harness having a predetermined length is combined with a pair of left and right fixed rails fixed to a floor and a pair of left and right movable rails fixed to a seat. A power slide device for a vehicle seat, wherein the movable rail is slid back and forth with respect to the fixed rail together with the seat by the driving force of the electric motor. A power slide apparatus for a vehicle seat, wherein the harness is arranged in the same direction as a fixed rail, and the harness is extended and contracted by a tip end portion of a bracket that moves together with the movable rail. 2. The power slide device for a vehicle seat according to claim 1, wherein a harness rail having an opening extending in a longitudinal direction is buried in a floor on a side of the fixed rail. A power slide device for an automobile seat, wherein a harness is arranged in a harness rail, and a distal end of a bracket for expanding and contracting the harness is provided in a harness rail via a connecting piece having a width capable of passing through the opening. . 3. The power slide device for a vehicle seat according to claim 2, wherein the opening is formed in an upper surface of a harness rail. 4. The power slide device for a vehicle seat according to claim 2, wherein the opening is formed in a side surface of a harness rail. 5. An electric motor connected to a power supply via a harness having a predetermined length, comprising a pair of left and right fixed rails fixed to a floor and a pair of left and right movable rails fixed to a seat. In a power slide device for an automobile seat that slides the movable rail together with the seat back and forth with respect to the fixed rail by the driving force of the electric motor, wiring a stretchable harness in the fixed rail,
A power slide device for a vehicle seat, wherein the harness is expanded and contracted by a tip end portion of a bracket that cooperates with a movable rail. 6. The power slide device for an automobile seat according to claim 1, wherein the harness has a stretchable curl shape having a predetermined diameter, and is provided at a tip end of a bracket. A power slide device for a vehicle seat, wherein a hole having a diameter smaller than the diameter of the curl shape is formed, and a harness is inserted through the hole. 7. The power slide device for an automobile seat according to claim 1, wherein the fixed rail is embedded in a floor. apparatus.