JP2579360Y2 - Power seat slide device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power seat slide device provided in an automobile or the like, and more particularly to a power seat slide device suitable for use in a second seat of a wagon vehicle having a long seat slide amount.

[0002]

2. Description of the Related Art Conventionally, for example, as a power seat slide device provided in an automobile, a seat is slidably guided in a front-rear direction on a vehicle body floor, and the seat is driven by an electric motor held on the seat side. 2. Description of the Related Art There is known a configuration in which itself is slid in the front-back direction.
The electric motor operates by receiving power supply from a power supply unit at a fixed position of the vehicle body.

[0003]

However, in the above-mentioned conventional power seat slide device, the electric motor on the seat side and the power supply unit at the vehicle body fixed position are simply connected by a flexible connection wiring. Therefore, the connection wiring is loosened as the sheet slides. Although there is no problem if the seat slide tolerance is set relatively small, if the seat slide tolerance is set large, such as in the second seat of a wagon car, the connection wiring The amount of slack also increases, and the slack part jumps out from under the seat to the feet of the occupant,
There is a problem that the appearance on the vehicle body floor is spoiled and the risk of disconnection increases.

An object of the present invention is to set a position between an electric motor for driving a seat held on a seat side and an electric power supply unit provided at a fixed position of a vehicle body, regardless of the size of a permissible sliding range of the seat. It is an object of the present invention to provide a power seat slide device that can be connected without loosening connection wires to prevent the appearance on a vehicle body floor from being impaired and to avoid the risk of disconnection.

[0005]

A power seat slide device according to the present invention includes a lower rail fixed to a vehicle body floor;
An upper rail slidably fitted to the lower rail and having a seat mounted thereon, and an electric motor held by the upper rail, wherein the driving force of the electric motor moves the upper rail along the lower rail. A drive mechanism, a flexible connection wiring for connecting between an electric power supply unit provided at a fixed position of the vehicle body and the electric motor, and the connection held by the upper rail and moving in accordance with the movement of the upper rail. And a winding mechanism for winding the wiring.

[0006]

[0007]

The power seat slide device of the present invention has a winding mechanism for winding connection wiring in accordance with the sliding of the seat as a connecting means between the electric motor on the sliding seat side and the power supply unit at the vehicle body fixed position. By using them, they are connected without loosening of the connection wiring. And, irrespective of the size of the allowable slide range of the seat, it is possible to prevent the appearance on the vehicle body floor from being impaired and to avoid the risk of disconnection.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show an embodiment of the present invention. The power seat slide device of the present embodiment is an example of application as a power seat slide device for a second seat 1 in a wagon vehicle as shown in FIG. 1, and the allowable sliding range L of the second seat 1 in the front-rear direction is determined by a driver. It is set to a long distance from the rear approach position of the seat 2 to the installation position of the third seat 3 and further to the rear of the vehicle body. The third seat 3 is installed and used as shown by a two-dot chain line in FIG. 1, and is used when the second seat 1 is slid to the rear of the vehicle body or, if necessary, as shown by a solid line in FIG. It is knocked down and locked.

In the left and right grooves 4A and 4B (see FIG. 2) formed on the upper surface of the vehicle body floor 4, a slide allowable range L is provided.
Are fixedly provided. The lower rail 11 is made of a light alloy such as aluminum, and is formed in a substantially U-shaped cross section having left and right vertical side walls on both side edges of a bottom wall portion. The first hook-shaped portions 11A, 11A (see FIGS. 3 and 4) extending in the longitudinal direction of 11 are formed shifted vertically. Each of the two left and right first hook-shaped portions 11A has a hook shape in cross section in which the tips thereof face downward. Reference numeral 12 denotes an upper rail slidably held by the lower rail 11, and is formed by extrusion of a light alloy material such as aluminum similarly to the lower rail 11. This upper rail 12
Is formed in a substantially inverted U-shape in cross section from the upper side of the lower rail 11, and a second side extending in the longitudinal direction of the upper rail 12 is provided on each of the inner surfaces of the vertical side walls on both sides of the upper wall portion.
Are formed so as to be shifted vertically. These two left and right second hook-shaped portions 12A
Are hook-shaped with their tips pointing upward, and engage with the corresponding first hook-shaped portions 11A to form upper rails 12 with respect to the lower rails 11.
Are slidably coupled back and forth along their longitudinal direction.

A slider (not shown) is interposed between the first and second hook-shaped portions 11A and 12A, and a lower rail 11, a bottom wall 11B (see FIG. 4) and an upper rail 12 are provided.
A roller (not shown) is rotatably interposed between the upper wall portion 12B and the upper wall portion 12B.

Reference numeral 20 denotes a drive mechanism for sliding the upper rail 12 back and forth, and is provided on each of the left and right upper rails 12. The drive unit 20 includes a gear case 21 attached to a fixed position of the upper rail 12. The gear case 21 includes a worm 22 and a worm wheel 2 meshing with the worm 22.
3 and a pinion 24 connected to the worm wheel 23. The pinion 24 meshes with a rack 25 fixed inside the lower rail 11,
The rack 25 extends in the longitudinal direction of the lower rail 11. The worm 22 is connected to the flexible shaft 2.
6 is connected to the output shaft of an electric motor 27 (see FIG. 2).

The motor 27 includes the left and right upper rails 1.
The left and right output shafts of a motor 27 are mounted on a base 13 bridged between the left and right upper rails 12, 12.
0, 20 via flexible shafts 26, 26 (see FIG. 2). Thereby, the left and right upper rails 12, 12 are driven synchronously. That is,
By the forward or reverse rotation of the motor 27, the left and right drive mechanisms 2
The right and left upper rails 1 and 2 rotate synchronously while being engaged with the racks 25 and 25.
2 and 12 will slide in the front-back direction.

The second seat 1 is mounted on the base 13 so as to be rotatable about an up-down axis O ₁ (see FIG. 2), and the second seat 1 is fixed at a fixed position in front of the vehicle body. Alternatively, a slide operation switch (not shown) for sliding the vehicle rearward is provided. Further, on the base 13, connection wirings C ₁ ,
C ₂ and the connection wiring C _3, left for a C ₄ wound, right winding mechanism 30, 30 is attached via a bracket 14 (see FIG. 5). Left and right winding mechanisms 30, 3
0 have the same configuration, so that the right-side wirings C ₁ and C
_The following description will be made on the basis of the winding device of No. ₂ .

The housing 31 of the winding mechanism 30 is formed by coupling a substantially cylindrical case 32 and a disk-shaped cover 33 (see FIG. 6) covering the opening thereof. reel 34 is rotatably supported about a horizontal axis O _2. The reel 34 is provided with flange portions 34B and 34C at both ends of a cylindrical body portion 34A. One flange portion 34B is formed in a substantially cross-shaped plane, and the other flange portion 34C is formed in a disk shape. I have. A spiral spring 35 is housed inside the body 34A, and the outer peripheral end 35A of the spiral spring 35 is
A, and its center end 35B is
2 is locked by a protrusion 32A provided on the inner surface of the second member.

Further, in the facing portion between the outer surface of the flange portion 34C of the reel 34 and the inner surface of the cover 33, the first and second brushes 36A and 36B are attached to the former facing portion, and the latter facing side. The first and second slip rings 37 slidingly contacting each of the brushes 36A and 36B
A, 37B are attached. First brush 36A
Is a substantially C-shaped in side view in FIG. 6, the axis O ₂
An intermediate portion extending in the vertical direction at the right position in the figure, and two free ends extending diagonally upward and downward in the same direction from both upper and lower ends of the intermediate portion in the figure. Are formed. The two free ends of the first brush 36A are in sliding contact with the small diameter first slip ring 37A. On the other hand, the second brush 36B has a substantially inverted C-shape when viewed from the side in FIG. 6, and has an intermediate portion extending vertically in a left position of the axis O ₂ in FIG. Two free ends are formed to extend diagonally upward and diagonally downward from upper and lower ends of the portion in the drawing. And this second
The two free ends of the brush 36B are in sliding contact with the large-diameter second slip ring 37B.

Then, one end of each of the wirings C ₁ and C ₂ is connected to the brushes 36A and 36B, a portion near one end thereof is wound around the reel 34, and the other end is connected to the case. 32 are drawn out from the opening 32B. On the other hand, the slip rings 37A and 37B
It is connected to the power supply terminal of the motor 27 via the wirings C ₁₁ and C ₁₂ . Accordingly, by wiring C _1, C ₂ is pulled in the arrow A ₁ direction in FIG. 6, these lines C _1,
C ₂ is fed accompanied by rotation of the arrow B ₁ direction of the reel 34, the spiral spring 35 is elastically deformed in the diameter direction. By pull-out force of the arrow A ₁ direction is solved, the reel 34 by the restoring force of the spiral spring 35 rotates back to the arrow B ₂ direction, wind the wire C _1, C ₂ again. Also, regardless of the amount of the wires C ₁ and C ₂ drawn out, the brushes 36 A and 36 B and the slip rings 37 A and 37 B electrically connect the wires C ₁ and C ₁₁ and the wires C ₂ and C _12. The state is maintained.

On the other hand, in the winding mechanism 30 for winding the wirings C ₃ and C ₄ on the left side in FIG. 5, the wirings C ₁₃ and C ₁₄ corresponding to the wirings C ₁₁ and C ₁₂ are connected to the second sheet 1 described above. is connected to the slide operation switch and the wiring C ₃ and C
₁₃ or one set of wirings C ₄ and C ₁₄ is a signal line of a drive signal for sliding the second seat 1 to the front of the vehicle body, and the other set is a drive signal line for sliding the second seat 1 to the rear of the vehicle body. It becomes a signal line. The common terminal of the slide operation switch is grounded to the vehicle body.

The wirings C ₁ , C ₂ , C ₃ and C ₄ are connected to the base 1
After passing through the pipe 15 fixed to the vehicle body 3, it enters a groove 4 </ b> C formed on the upper surface of the vehicle body floor 4, and the other end thereof is connected to the controller (power (Supply unit) 40. The groove 4C extends along the sliding direction of the second seat 1, and has a pipe 15 as shown in FIG.
Is located at the lower end. In addition, the wirings C ₁ , C ₂ , C
₃ and C ₄ , ie, a portion near the other end of the connector 38, that is, a portion in the vicinity of the connector 38 is locked at a fixed position on the vehicle body floor 4.

The controller 40 has an on-board battery 41
There are connected, in order to forward or reverse the motor 26 in response to a drive signal from the line C _3, C _4, lines C _1, C
The connection state of the battery 41 with respect to ₂ is switched.

A floor carpet 5 is laid on the upper surface of the vehicle body floor 4 as shown in FIG.
The portions located on A, 4B, and 4C are provided with cuts 5A extending in the longitudinal direction thereof. Therefore, the portion of the floor carpet 5 on the grooves 4A, 4B, 4C is formed by the upper rails 12, 12 and the pipe 15 in accordance with the sliding of the second seat 1, as shown in FIG.
It will be turned up like the solid line inside.
The portions of the grooves 4A, 4B, 4C where the upper rails 12, 12 and the pipe 15 are not located are the floor carpet 5
Thus, it is covered as shown by the dotted line in FIG. 4 to prevent the invasion of foreign matter and to maintain the aesthetic appearance.

Thus, in the power seat slide device configured as described above, by operating the slide operation switch, the motor 26 rotates forward or backward, and the second seat 1 slides in the front-rear direction. Then, according to the slide of the second sheet 1, the winding mechanisms 30, 30
Draws and winds the wires C ₁ , C ₂ , C ₃ , and C ₄ . Therefore, these wirings C ₁ , C ₂ , C ₃ , C
No. ₄ is always contained in the groove 4C without any slack.

FIG. 7 is a diagram for explaining a main part of a reference example of the present invention.

In this embodiment, a long conductive plate (conductor) 51 made of copper or the like extending in the longitudinal direction of the lower rail 11 is fixed to the upper surface 11C of the vertical side wall of the lower rail 11 via an insulator 52. Also, the upper wall 12 of the upper rail 12
A conductive sliding pin (brush) 53 slidingly in contact with the upper surface of the conductive plate 51 is guided by B via an insulator 54 so as to be vertically movable. The upper end of the slide pin 53 is held by a leaf spring 56 via an insulator 55, and furthermore, the leaf spring 56
The sliding pin 5 is supported on the upper rail 12
3 is biased downward.

Therefore, as the upper rail 12 slides, the sliding pin 53 slides while being pressed against the conductive plate 51, regardless of the sliding of the upper rail 12. The electrical connection with the conductive plate 51 is maintained. So, for example,
A total of two such combinations of the sliding pin 53 and the conductive plate 51 are provided on both sides of one of the rails 11 and 12,
A total of two sliding pins 53 in those sets are connected to a power supply terminal of the motor 27 (see FIG. 2) by wiring C (see FIG. 7), and a total of two conductive plates 51 in those sets
Is connected to the controller 40 (see FIG. 2), a drive circuit for the motor 27 can be formed. Similarly, two sets of the combination of the sliding pin 53 and the conductive plate 51 are provided on both sides of the rails 11 and 12 of the other set, and the two sliding pins 53 in those sets are used as the slide operation switch. By connecting and connecting a total of two conductive plates 51 in the set to the controller 40 (see FIG. 2), a control circuit of the motor 27 (see FIG. 2) can be formed.

In the above two embodiments, the controller 40 (see FIG. 2) is provided at a fixed position of the vehicle body, and the winding mechanism 30 (FIG. 5) is provided between the controller 40, the motor 27 and the slide operation switch. Or a combination of a sliding pin 53 and a conductive plate 51 (see FIG. 7). When the controller 40 is provided on the second seat 1 side, the controller 40 is connected to the vehicle. Winding mechanism 3 between battery (power supply unit) 41
0 or a combination of the sliding pin 53 and the conductive plate 51 may be used.

[0027]

As described above, the power seat slide device of the present invention is used as a connection means between the electric motor on the sliding seat side and the power supply unit at the vehicle body fixed position.
Because the configuration uses a winding mechanism that winds the connection wiring according to the slide of the sheet, it is connected without loosening of the connection wiring between them, regardless of the size of the allowable slide range of the sheet. Therefore, it is possible to prevent the appearance on the vehicle body floor from being impaired, and it is also possible to avoid the risk of disconnection.

[Brief description of the drawings]

FIG. 1 is a perspective view of the inside of an automobile provided with an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a second seat portion shown in FIG.

FIG. 3 is an enlarged perspective view of an upper rail and a lower rail shown in FIG. 2;

FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 2;

FIG. 5 is an enlarged perspective view of a winding mechanism shown in FIG. 2;

FIG. 6 is a side view of a partially cut-away portion of the winding mechanism shown in FIG.

FIG. 7 is a sectional view of a main part for describing a reference example of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 second seat (sheet) 11 lower rail 12 upper rail 20 drive mechanism 27 electric motor 30 winding mechanism 40 controller (power supply unit) 51 conductive plate (conductor) 52 insulator 53 sliding pin (brush) 54, 55 insulator 56 the leaf spring _{C 1, C 2, C 3} , C 4 connecting wires

Claims (2)

(57) [Scope of request for utility model registration] 1. An electric motor comprising: a lower rail fixed to a vehicle body floor; an upper rail slidably fitted to the lower rail and a seat mounted thereon; and an electric motor held by the upper rail. A drive mechanism for moving the upper rail along the lower rail by the driving force of the above; a flexible connection wiring connecting between a power supply unit provided at a fixed position of the vehicle body and the electric motor; A power seat slide device comprising: a winding mechanism held on a rail and winding the connection wiring in accordance with movement of the upper rail. 2. The winding mechanism includes: a housing fixed to the upper rail; a reel rotatably supported by the housing and capable of winding the connection wiring; and the reel winding the connection wiring. Urging means for urging the reel in a rotating direction, disposed at an opposing portion of the housing and the reel, slidably in contact with the rotation of the reel, and between the electric motor and the connection wiring. 2. A brush and a slip ring electrically connected to each other.
A power seat slide device according to item 1.