JPH0724630U - Power seat slide device - Google Patents

Abstract

(57) [Summary] [Purpose] Regardless of the size of the seat slide allowance range, the electric motor for driving the seat held on the seat side and the power supply unit provided at a fixed position of the vehicle body are provided. (EN) Provided is a power seat slide device which can be connected without slack in connection wiring to avoid impairing the appearance on the vehicle body floor and avoid the risk of disconnection. [Structure] Lower rail 11 installed on vehicle body floor 4,
The upper rails 12 and 12 are slidably fitted to 11 and the second seat 1 is provided on the base 13 spanned between the upper rails 12 and 12. The upper rails 12 and 12 are mounted on the base 13 in the front-rear direction. An electric motor 27 that outputs a driving force for sliding on the base 13 is provided, and by the connection wiring wound inside the winding mechanism 30 on the base 13,
The drive terminal of the electric motor 27 was connected to the controller 40 at a fixed position on the vehicle body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power seat slide device provided in an automobile or the like, and particularly to a power seat slide device suitable for a second seat of a wagon vehicle having a long seat slide amount.

[0002]

[Prior art]

 Conventionally, for example, as a power seat slide device provided in an automobile, a seat is slidably guided on a vehicle body floor in the front-back direction, and the seat itself is moved in the front-back direction by a driving force of an electric motor held on the seat side. It is known to have a sliding structure. The electric motor operates by being supplied with electric power from a power supply unit at a fixed position of the vehicle body.

[0003]

[Problems to be solved by the device]

 However, in the above-described conventional power seat slide device, since the electric motor on the seat side and the power supply unit at the vehicle body fixed position are simply connected by the flexible connection wiring, the connection wiring is seated. Will be loosened with the slide. There is no problem if the seat slide allowance is set relatively small, but if the seat slide allowance is set large, such as in the second seat of a wagon vehicle, The amount of slack in the connection wiring also increases, and the slack portion pops out from below the seat to the feet of the occupant, which impairs the appearance on the vehicle floor and increases the risk of disconnection.

An object of the present invention is to provide a seat drive electric motor that is held on the seat side and an electric power supply unit provided at a fixed position of the vehicle body, regardless of the size of the seat slide allowable range. An object of the present invention is to provide a power seat slide device that can be connected without slack in the connection wiring to prevent the appearance on the vehicle body floor from being impaired and the risk of disconnection.

[0005]

[Means for Solving the Problems]

 A first form of a power seat slide device of the present invention is a lower rail fixedly mounted on a vehicle body floor, an upper rail slidably fitted to the lower rail and having a seat mounted thereon, and held by the upper rail. A drive mechanism having an electric motor for moving the upper rail along the lower rail by a driving force of the electric motor, and a power supply unit provided at a fixed position of the vehicle body and the electric motor are connected to each other. And a winding mechanism that is held by the upper rail and that winds the connection wiring in accordance with the movement of the upper rail.

A second form of the power seat slide device of the present invention is a lower rail fixed to a vehicle body floor, an upper rail slidably fitted to the lower rail and having a seat attached thereto, and the upper rail. A driving mechanism that has an electric motor held by the electric motor and moves the upper rail along the lower rail by a driving force of the electric motor; and a longitudinal direction of the lower rail that is disposed on the lower rail via an electric insulator. A conductor that extends in the direction and is connected to a power supply unit provided at a fixed position of the vehicle body, and a conductor that is disposed on the upper rail via an electrical insulator and is accompanied by sliding of the upper rail. And a brush that is in sliding contact with the electric conductor and that is connected to the electric motor.

[0007]

[Action]

 The power seat slide device of the present invention is a winding mechanism that winds a connection wiring according to the sliding of the seat or a seat as a connecting means between the sliding seat side motor and the power supply section at the vehicle body fixed position. By using a combination of a conductor and a brush that make sliding contact according to the slide, they are connected without slack in the connection wiring. In addition, the appearance of the vehicle body floor is prevented from being impaired and the risk of disconnection is avoided regardless of the size of the seat slide allowance range.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

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

Left and right lower rails 11, 11 extending over the slide allowable range L are fixedly provided in the left and right groove portions 4A, 4B (see FIG. 2) formed on the upper surface of the vehicle body floor 4. The lower rail 11 is made of a light alloy such as aluminum and has a substantially U-shaped cross section with left and right vertical side walls on both side edges of the bottom wall portion. First hook-shaped portions 11A and 11A (see FIGS. 3 and 4) extending in the longitudinal direction of 11 are formed so as to be vertically displaced. Each of the two first hook-shaped portions 11A on the left and right has a hook-shaped cross section with their tips facing downward. Reference numeral 12 denotes an upper rail slidably held by the lower rail 11, which is extruded from a light alloy material such as aluminum as in the lower rail 11. The upper rail 12 is formed in a substantially inverted U-shape that cuts the lower rail 11 from above, and extends in the longitudinal direction of the upper rail 12 on each of the inner surfaces of the vertical side walls on both sides of the upper wall portion. The second hook-shaped portions 12A, 12A are formed so as to be vertically displaced from each other. These two left and right second hook-shaped portions 12A are hook-shaped with their tips facing upward, and are engaged with the corresponding first hook-shaped portions 11A, respectively, to the lower rail 11. On the other hand, the upper rails 12 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 the lower rail 11, the bottom wall portion 11B (see FIG. 4), the upper wall portion 12B and the upper rail portion 12B are connected to each other. A roller (not shown) is rotatably interposed between them.

Reference numeral 20 denotes a drive mechanism for sliding the upper rail 12 back and forth, which is provided on each of the left and right upper rails 12, 12. The drive unit 20 includes a gear case 21 attached to a fixed position of the upper rail 12, and the gear case 21 is connected to a worm 22, a worm wheel 23 meshing with the worm 22, and a worm wheel 23 thereof. It has a built-in pinion 24. The pinion 24 meshes with a rack 25 fixed inside the lower rail 11, and the rack 25 extends in the longitudinal direction of the lower rail 11. The worm 22 is connected to the output shaft of an electric motor 27 (see FIG. 2) via a flexible shaft 26.

The motor 27 is arranged on a base 13 that is bridged between the left and right upper rails 12, 12, and the left and right output shafts of the motor 27 are arranged on the left and right upper rails 12, 12. The drive mechanisms 20 and 20 provided in each are connected via flexible shafts 26 and 26 (see FIG. 2). As a result, the left and right upper rails 12, 12 are synchronously driven. That is, by the normal or reverse rotation of the motor 27, the pinions 24, 24 of the left and right drive mechanisms 20, 20 rotate synchronously while meshing with the racks 25, 25, and the left and right upper rails 12, 12 move forward and backward. It will slide toward you.

The second seat 1 is rotatably mounted on the base 13 about an axis O _{1 in the} vertical direction (see FIG. 2) as a center, and the second seat 1 is mounted at a fixed position on the vehicle body. A slide operation switch (not shown) for sliding forward or rearward of the vehicle body is provided. Further, the left and right winding mechanisms 30, 30 for winding the connection wirings C ₁ , C ₂ and the connection wirings C ₃ , C ₄ are mounted on the base 13 via the bracket 14 (see FIG. 5). Has been. Since the left and right winding mechanisms 30 and 30 have the same structure, a description will be given on behalf of the one for winding the right wirings C ₁ and C ₂ in FIG.

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) that covers the opening of the case 32. A reel 34 is rotatably supported around 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 having a substantially cross shape in a plane, and the other flange portion 34C having a disk shape. ing. The spiral spring 35 is housed inside the body portion 34A, the outer peripheral side end portion 35A of the spiral spring 35 is locked to the body portion 34A, and the center side end portion 35B thereof is provided on the inner surface of the case 32. It is locked to the protruding portion 32A.

Further, at the facing portion of 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 facing portion on the former side, and the brushes on the latter side are attached. First and second slip rings 37A and 37B, which are in sliding contact with the brushes 36A and 36B, are attached to the facing portions. The first brush 36A is substantially C-shaped in a side view of FIG. 6, and has an intermediate portion extending upward and downward at the right side position of the axis O ₂ in the figure, and an intermediate portion of the intermediate portion. Two free end portions are formed extending from the upper and lower ends in the same figure to the upper right and the lower right in the same figure. Then, the two free ends of the first brush 36A are brought into sliding contact with the first slip ring 37A having a small diameter. On the other hand, the second brush 36B has a substantially inverted C shape in a side view of FIG. 6, and has an intermediate portion extending vertically at the left side position of the axis O ₂ in the figure, and Two free ends extending diagonally upward to the left and diagonally downward to the left from the upper and lower ends of the middle part of the figure are formed. Then, the two free ends of the second brush 36B are in sliding contact with the large-diameter second slip ring 37B.

Then, the wiring C₁ , C₂ One end of each of these is connected to the brushes 36A and 36B, the parts near the one end thereof are wound around the reel 34, and the other ends thereof are pulled out from the opening 32B of the case 32 to the outside. ing. On the other hand, the slip rings 37A and 37B are connected to the wiring C.₁₁, C₁₂It is connected to the power supply terminal of the motor 27 via. Therefore, the wiring C₁ , C₂ Is arrow A in FIG.₁ By pulling out in the direction, those wirings C₁ , C₂ Is the arrow B on the reel 34₁ The spiral spring 35 is elastically deformed in the diameter-reducing direction as the spiral spring 35 is extended while being rotated in the direction. And arrow A₁ The pulling force in the direction is released, and the restoring force of the spiral spring 35 causes the reel 34 to move in the direction of arrow B.₂ Rotate back in the direction, and then wire C₁ , C₂ To wind up. Also, such wiring C₁ , C₂ Irrespective of the amount of pulling out the wiring, the brushes 36A and 36B and the slip rings 37A and 37B allow the wiring C₁ And C₁₁And wiring C ₂ And C₁₂The electrical connection state of 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 on the side of the second seat 1 described above. Connected to the slide operation switch of the above, and one set of the wirings C ₃ and C ₁₃ or the wirings C ₄ and C ₁₄ serves as a signal line of a drive signal for sliding the second seat 1 to the front of the vehicle body, and the other set. The set becomes a signal line of a drive signal for sliding the second seat 1 to the rear of the vehicle body. The common terminal of the slide operation switch is grounded to the vehicle body.

The wirings C ₁ , C ₂ , C ₃ , C ₄ pass through the pipe 15 fixed to the base 13 and then into the groove portion 4C formed on the upper surface of the vehicle body floor 4, and their The other end is connected to the controller (power supply unit) 40 at the fixed position of the italic body via the connector 38. The groove portion 4C extends along the sliding direction of the second seat 1, and the lower end portion of the pipe 15 is located inside thereof as shown in FIG. Further, the portions of the wirings C ₁ , C ₂ , C ₃ , C ₄ close to the other end, that is, the portions in the vicinity of the connector 38 are locked at fixed positions on the vehicle body floor 4.

An on-vehicle battery 41 is connected to the controller 40, and the battery 41 is connected to the wirings C ₁ and C ₂ in order to rotate the motor 26 in the normal or reverse direction according to the drive signal from the wirings C ₃ and C ₄ . Switch the connection status.

A floor carpet 5 is laid on the upper surface of the vehicle body floor 4 as shown in FIG. 4, and the portions located on the grooves 4A, 4B, 4C extend in the longitudinal direction thereof. The cut 5A is formed. Therefore, the portion of the floor carpet 5 on the grooves 4A, 4B, 4C is turned up by the upper rails 12, 12 and the pipe 15 as shown by the solid line in FIG. 4 according to the slide of the second seat 1. become. The groove portions 4A, 4B, 4C where the upper rails 12, 12 and the pipe 15 are not positioned are covered by the floor carpet 5 as shown by the dotted lines in FIG. 4 to prevent foreign matter from entering and to keep the appearance. You will be drunk.

In the power seat slide device configured as described above, the motor 26 is normally or reversely rotated by operating the slide operation switch, so that the second seat 1 slides in the front-rear direction. Then, according to the slide of the second seat 1, the winding mechanisms 30, 30 pull out or wind up the wirings C ₁ , C ₂ , C ₃ , C ₄ . Therefore, the wirings C ₁ , C ₂ , C ₃ , and C ₄ are always stored in the groove portion 4C without any slack.

FIG. 7 is a view for explaining the essential parts of the second embodiment 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 fixedly mounted on the upper surface 11 C of the vertical side wall of the lower rail 11 via an insulator 52. Further, on the upper wall portion 12B of the upper rail 12, a conductive sliding pin (brush) 53 which is in sliding contact with the upper surface of the conductive plate 51 is vertically movably guided via an insulator 54. The upper end of the sliding pin 53 is held by a leaf spring 56 via an insulator 55, and the leaf spring 56 is supported by the upper portion of the upper rail 12 to urge the sliding pin 53 downward. .

Therefore, as the upper rail 12 slides, the sliding pin 53 slides on the conductive plate 51 while being in pressure contact with the sliding plate 53, regardless of whether the upper rail 12 slides. The electrical connection with the conductive plate 51 is maintained. Therefore, for example, a total of two sets of such a combination of the sliding pin 53 and the conductive plate 51 are provided on both side portions of the rails 11 and 12 of one set, and a total of two sliding pins 53 in these sets are provided. By connecting the power source terminals of the motor 27 (see FIG. 2) by the wiring C (see FIG. 7) and connecting the two conductive plates 51 in total to the controller 40 (see FIG. 2), 27 drive circuits can be formed. Similarly, a total of two combinations 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 a total of two sliding pins 53 in those sets are used as the slide operation switch. And by connecting a total of two conductive plates 51 in those sets to the controller 40 (see FIG. 2), a control circuit for the motor 27 (see FIG. 2) can be formed.

In the two embodiments described above, the controller 40 (see FIG. 2) is provided in the body position, and the winding mechanism 30 (FIG. 5) is provided between the controller 40 and the motor 27 and the slide operation switch. Connection) or a combination of the sliding pin 53 and the conductive plate 51 (see FIG. 7). However, when the controller 40 is provided on the second sheet 1 side, The on-vehicle battery (power supply unit) 41 may be connected by using the winding mechanism 30 or a combination of the sliding pin 53 and the conductive plate 51.

[0027]

[Effect of device]

 As described above, the power seat slide device of the present invention has the tangential wire winding depending on the seat slid as a connecting means between the sliding seat side motor and the vehicle body fixed position power supply section. Since the structure uses a combination of a take-up winding mechanism or a conductor and a brush that make sliding contact according to the slide of the seat, connect them without slack in the connection wiring, and slide the seat. Regardless of the size of the allowable range, it is possible to prevent the appearance of the vehicle body floor from being impaired, and to avoid the risk of disconnection.

[Brief description of drawings]

FIG. 1 is a perspective view of the interior of an automobile equipped with a first embodiment of the present invention.

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

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

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

5 is an enlarged perspective view of the winding mechanism portion shown in FIG. 2. FIG.

FIG. 6 is a side view of a part of the winding mechanism shown in FIG.

FIG. 7 is a sectional view of an essential part for explaining a second embodiment of the present invention.

[Explanation of symbols]

1 Second Seat (Seat) 11 Lower Rail 12 Upper Rail 20 Drive Mechanism 27 Electric Motor 30 Winding Mechanism 40 Controller (Power Supply Section) 51 Conductive Plate (Conductor) 52 Insulator 53 Sliding Pin (Brush) 54, 55 Insulator 56 leaf springs C ₁ , C ₂ , C ₃ , C ₄ connection wiring

Claims (3)

[Scope of utility model registration request] 1. An electric motor having a lower rail fixedly mounted on 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. A drive mechanism for moving the upper rail along the lower rail by the driving force of the vehicle; a flexible connection wiring for connecting 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 that is held by a rail and that winds the connection wiring according to the 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. An urging means for urging the reel in a rotating direction, and a biasing means disposed at an opposing portion of the housing and the reel, slidingly contacting each other as the reel rotates, and between the electric motor and the connection wiring. A brush and a slip ring that are electrically connected to each other are provided.
The power seat slide device described in 1. 3. An electric motor having a lower rail fixedly mounted on a vehicle body floor, an upper rail slidably fitted to the lower rail and having a seat attached thereto, 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 lower rail; and a driving mechanism that is disposed on the lower rail via an electric insulator and extends in the longitudinal direction of the lower rail and is provided at a fixed position on the vehicle body. And a conductor connected to the power supply unit, which is disposed on the upper rail via an electrical insulator and is in sliding contact with the conductor as the upper rail slides and is connected to the electric motor. A power seat slide device, comprising: