JP4745124B2 - Wiring laying structure for vehicle seats - Google Patents

Description

  The present invention relates to a wiring laying structure for a vehicle seat. Specifically, the present invention relates to a wiring laying structure of a vehicle seat for laying wiring of an electric appliance disposed on the seat for the vehicle.

2. Description of the Related Art Conventionally, some seats for a vehicle have built-in electric appliances such as a sensor for detecting the seating of an occupant and a seat heater (heater means) for heating a seated occupant. These electric appliances are formed in a planar shape, and are disposed at a position between the cushion pad and the skin cover or embedded in the cushion pad. And the wiring of these electric appliances is laid in the state pulled in, for example to the rear-end part of a seat cushion, for the connection with the wiring which comes from the vehicle body side. That is, for example, when the electric appliance is locally arranged at the front position of the seat cushion, it is conceivable that the wiring is inserted under the cushion pad and laid in the direct downward direction. Take it. Therefore, the wiring passes between the cushion pad and the skin cover and is laid near the surface layer of the seat cushion, so that a laying state in which a foreign object sensation of the wiring is easily felt at the time of sitting.
Thus, for example, Patent Document 1 below discloses a technique that makes it difficult to feel the foreign matter of the wiring. In this disclosure, a hanging groove is formed on the surface layer side of the cushion pad of the seat cushion so that the skin cover can be pulled and latched. And the wiring of the seating sensor (electric appliance) is laid in the form of being pulled into the inside of this hanging groove. Here, the suspension groove is formed in a straight line extending in the front-rear direction or the left-right direction of the cushion pad. And the wire for suspension which can hold the tensioned skin cover is stretched inside the suspension groove. Therefore, the skin cover can be stretched with a good appearance as a state in which the skin cover is in close contact with the cushion pad by hooking the skin cover on the wire with a hook such as a C-ring while being pulled into the hanging groove. . The wire for suspension is placed in the suspension groove so that it is in a tensioned state in which it is difficult to feel a foreign object. Therefore, the wiring laid inside the suspending groove can be laid in a state where it is difficult to feel a foreign object feeling together with the suspending wire.

JP-A-9-182647

  However, in the above disclosed technology, when the skin cover is hooked on the wire of the hanging groove, there is a risk that an excessive load is applied to or damaged on the wiring drawn into the hanging groove.

  The present invention has been devised as a solution to the above-described problems, and the problem to be solved by the present invention is that the wiring of the heater means is not impossible so as not to impair the seating feeling of the seat. An object of the present invention is to make it possible to lay the interior of the seat relatively easily in a state where it is difficult to be loaded or damaged.

In order to solve the above problems, the vehicle seat wiring laying structure of the present invention takes the following means.
A first invention is a wiring laying structure of a vehicle seat for laying wiring of an electric appliance arranged in a seat for a vehicle, wherein the electric appliance warms a portion seated on the seat The heater means is disposed at a position between the cushion pad constituting the seat back or the seat cushion and the skin cover covering the cushion pad, and receives the seating load of the cushion pad. The side surface is formed with a recessed groove for pulling and holding the skin cover, and the cushion pad has wiring that can be connected to wiring coming from the heater means side The component is embedded along the hanging groove.
According to the first aspect of the present invention, the wiring component capable of wiring connection with the heater means is embedded along the hanging groove of the cushion pad, so that it is difficult to feel a foreign object feeling when seated. Become. And since a wiring component is embed | buried in the inside of a cushion pad, when pulling a skin cover in a hanging groove and latching, an excessive load is not applied to a wiring component, or it is not damaged.

Next, the second invention is the covering member for covering the wiring connected to the wiring coming from the heater means side, wherein the wiring component is embedded in the cushion pad by integral molding with the cushion pad in the first invention described above. The covering member is made of a material that does not melt when integrally formed with the cushion pad.
According to the second aspect of the invention, the covering member is formed of a material having excellent heat resistance, and therefore does not melt when integrally molded with the cushion pad.

Next, a third aspect of the present invention is the above-described first or second aspect of the present invention, wherein the wiring component is a hanging part that can hold the skin cover that is pulled into the hanging groove of the cushion pad. The wire is integrally formed.
According to the third aspect of the invention, since the wiring component and the suspension wire are integrally formed, they can be handled as one component. And the support force for the wire to hold the skin cover is secured by the holding force of the wiring component embedded in the cushion pad.

Next, according to the fourth invention, the planar heater means is integrally attached to the lining side of the skin cover, and the wiring terminal of the wiring component embedded in the cushion pad is inserted into the hanging groove. It is in an exposed state, and the wiring terminal on the heater means side is connected to the wiring terminal of the wiring component provided exposed in the hanging groove.
According to the fourth invention, the heater means is assembled to the seat by connecting the terminal of the wiring to the terminal of the wiring of the wiring component exposed in the hanging groove, and covering the skin cover on the cushion pad. It will be in the state. This heater means is removed from the cushion pad together with the skin cover by removing it from the cushion pad.

The present invention can obtain the following effects by taking the above-described means.
First, according to the first aspect of the present invention, the wiring component capable of wiring connection with the heater means is embedded along the suspension groove of the cushion pad, so that the wiring of the heater means does not impair the seating feeling on the seat. Thus, it can be laid relatively easily inside the seat in a state where it is difficult to apply an excessive load or damage.
Furthermore, according to the second invention, since the covering member of the wiring component does not melt at the time of integral molding with the cushion pad, the wiring component is suitably embedded in the cushion pad while protecting the wiring arranged therein. Can do.
Further, according to the third invention, since the wire for hanging the skin cover is formed integrally with the wiring component, the number of components handled at the time of integral molding with the cushion pad can be reduced. And compared with the structure by which a wire and wiring components are separately embed | buried in a cushion pad, this arrangement structure can be rationalized.
Furthermore, according to the fourth aspect of the invention, since the heater means can be removed from the cushion pad together with the skin cover, the maintenance of the heater means can be facilitated. In addition, the heater means can be easily installed in conjunction with the covering operation of the skin cover.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

  First, the wiring laying structure of the vehicle seat according to the first embodiment will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of a seat 1 for a seat. FIG. 2 is a sectional view showing the internal structure of the seat cushion 3 side. FIG. 3 is a perspective view in which the components on the seat cushion 3 side are disassembled into the cushion pad 20 side and the skin cover 10 side. FIG. 4 is a configuration diagram showing the internal structure of the wiring component 30.

The wiring laying structure of the present embodiment, as shown well in FIG. 1, is the wiring Hw of the seat heater H (corresponding to the heater means of the present invention) installed on the seat 1 from the vehicle body side. It is the structure laid to the connection position with (illustration omitted). In FIG. 1, the wiring of the seat heater H provided on the seat back 2 side is omitted. Here, the seat heaters H are respectively disposed at the shoulder position and the waist position of the seat back 2 and the front position of the seat cushion 3. The seat heater H is formed in a thin, rectangular shape having flexibility, and has a heater function for heating a seated area of a passenger. And the wiring Hw which comes out from each seat heater H is laid in the position retreated away from the surface layer side of the seat back 2 or the seat cushion 3 so that an occupant does not feel a foreign body feeling when sitting on the seat 1. Yes.
Here, the seat back 2 and the seat cushion 3 are configured to have the same cushion structure. That is, the seat back 2 and the seat cushion 3 are configured such that cushion pads are installed on the frame members constituting the skeletons, and a skin cover is attached to the surface side. Further, the seat back 2 and the seat cushion 3 have the same configuration with respect to the installation structure of the seat heater H and the wiring laying structure. Therefore, in the following description, the installation structure of the seat heater H with respect to the seat cushion 3 and the wiring laying structure are described, and the description of the seat back 2 is omitted. In addition, about the location where wiring laying structures differ by the seat back 2 and the seat cushion 3, it supplements and demonstrates separately each time. However, basically, the wiring laying structure between the seat back 2 and the seat cushion 3 differs only in the laying direction. This is because the seat back 2 is disposed in an upright posture with respect to the seat cushion 3.

First, a schematic configuration of the seat cushion 3 will be described. Here, FIG. 2 shows a cross-sectional view of the internal structure of the seat cushion 3. FIG. 3 is a perspective view in which the components of the seat cushion 3 are disassembled into a member on the cushion pad 20 side and a member on the skin cover 10 side. In addition, in FIG. 3, in order to represent the structure of the cushion pad 20 and the skin cover 10 in an easy-to-understand manner, each part of the front side is cut out.
That is, as shown in FIG. 2, the seat cushion 3 is installed in a state where the cushion pad 20 is stretched over a cushion frame 3 f (frame member) constituting the skeleton thereof. The skin cover 10 is covered on the surface layer side of the cushion pad 20. The outer periphery of the skin cover 10 is hooked on wires 3w that are integrally provided on both sides of the cushion frame 3f. Thereby, the skin cover 10 is being fixed to the cushion frame 3f as the state covered with the surface layer side of the cushion pad 20.
Further, in addition to the above-described latched state of the peripheral edge portion, the skin cover 10 is further provided with recessed suspending grooves 21 and 22 (for the suspending grooves 22) formed on the seating surface 20 a of the cushion pad 20. (See FIG. 1). As shown in FIG. 1, a plurality of the suspending grooves 21 and 22 are formed so as to extend linearly in the front-rear direction and the left-right direction of the seat cushion 3. Therefore, as shown in FIG. 2, the skin cover 10 is pulled into the suspension grooves 21 (suspension grooves 22) and hooked so that the skin cover 10 is more closely attached to the cushion pad 20. It is installed.

Next, the configuration of the skin cover 10 will be specifically described.
That is, as shown in FIG. 3, the skin cover 10 is formed by stitching together a seating cover part 11 that covers the seating surface 20 a of the cushion pad 20 and an eyelid cover part 12 that covers the side face of the cushion pad 20. . And the stitching | suture site | part 13 used as this connection is orient | assigned to the back side of the skin cover 10, and is drawn in to the suspension groove | channel 21 of the cushion pad 20 mentioned above. Since the seating cover part 11 and the heel cover part 12 are superposed and stitched, the stitched part 13 is harder than the other cover surfaces. Therefore, when the occupant seats on the seat 1, it is difficult to feel a sense of foreign matter at the sewed part 13 when the sewed part 13 is pulled into the hanging groove 21 and latched.
In addition, the suture site 13 is provided with a wire 14w serving as a hanging tool when hooked in the hanging groove 21. The wire 14w is provided so as to be inserted through a hanging bag 14 that is stitched in a hanging manner along the stitched portion 13. Here, the hanging bag 14 has holes at various positions in the longitudinal direction, and the wire 14w is exposed from the hole (not shown).

Next, the configuration of the cushion pad 20 will be specifically described.
That is, as shown in FIG. 3, the cushion pad 20 has a plurality of recessed hanging grooves 21 (see FIG. 1 for the hanging grooves 22) on the seating surface 20a. Specifically, the hanging grooves 21 extending in the front-rear direction are formed at two positions separated from each other on the seating surface 20a, and extend straight from the rear end portion of the cushion pad 20 to the front. It has become. Further, the hanging groove 22 (see FIG. 1) extending in the left-right direction is formed between the above-described hanging grooves 21 extending in the front-rear direction, and straightens in the left-right direction so as to connect both the hanging grooves 21. It has an extended shape.
In addition, in the cushion pad which comprises the seat back 2, the hanging groove | channel is formed in the shape extended in the up-down direction on a backrest surface (sitting surface), and the shape extended in the left-right direction. The hanging grooves extending in the vertical direction are formed at two positions spaced apart from each other on the backrest surface, and have a shape that extends straight upward from the lower end of the cushion pad. And the hanging groove extended in the left-right direction is formed between the hanging grooves extended in the up-down direction, and has a shape that extends straight in the left-right direction so as to connect both the hanging grooves.

Next, as shown in FIG. 2, a wire 35 serving as a hanging tool for hanging the skin cover 10 is stretched inside the hanging groove 21 extending in the front-rear direction. The wire 35 is fixed and supported integrally with the cushion pad 20 so that the skin cover 10 is pulled into the hanging groove 21 and latched.
Specifically, the skin cover 10 is hooked on the wire 35 as follows. In other words, the skin cover 10 is provided on the side of the cushion pad 20 by the hook ring C in which the wire 14w exposed from the parts of the hanging bag 14 is a hook in the state where the stitched portion 13 is pulled into the hanging groove 21. It is hooked on the wire 35. By arranging the wire 35 inside the hanging groove 21, it is difficult to feel the foreign matter of the wire 35 when the occupant sits on the seat 1. The wire 35 is formed integrally with the wiring component 30 embedded in the cushion pad 20 described below.
Note that a wire (not shown) serving as a suspending tool for suspending the skin cover 10 is also stretched inside the suspending groove 22 (see FIG. 1) extending in the left-right direction. This wire is also fixed and supported integrally with the cushion pad 20 so that the skin cover 10 can be pulled into the hanging groove 22 and latched. However, unlike the above-described method of fixing the wire 35, this wire is fixed in such a manner that portions thereof are directly embedded in the cushion pad. In addition, since the fixing method of this wire is a well-known technique, detailed description is abbreviate | omitted. Further, the method of latching the wire and the skin cover 10 is substantially the same as that of the wire 35 described above.

Next, the configuration of the wiring component 30 will be described. Here, in FIG. 1, only the wiring components 30 installed on the seat cushion 3 are shown for easy understanding of the configuration, and the wiring components installed on the seat back 2 side are omitted.
That is, as shown in FIG. 3, the wiring component 30 is embedded along a position immediately below the hanging groove 21 extending in the front-rear direction of the cushion pad 20. As shown in FIG. 1, the wiring component 30 is formed in an elongated column shape, and is located near the center position of the cushion pad 20 along the hanging groove 21, that is, from the position where the wiring connection with the seat heater H is performed. It extends to the end. Note that, in the cushion pad on the seat back 2 side, the wiring components are embedded along the position directly below the suspension groove extending in the vertical direction of the cushion pad (inside the cushion pad). And this wiring component is extended from the position connected with the seat heater H to a lower end part.
Here, referring to FIG. 3 and FIG. 4, the wiring component 30 has the wiring 32 therein, and the terminal of the wiring Hw coming out of the seat heater H to the terminal 33 of the wiring 32 provided at the front end portion. Hc can be connected. The terminal 33 at the front end portion is provided in a state exposed to the hanging groove 21 of the cushion pad 20. Therefore, the terminal Hc of the wiring Hw coming out of the seat heater H can be easily connected to the terminal 33 of the wiring component 30 exposed in the hanging groove 21.

In addition, the terminal 34 of the wiring 32 provided at the rear end portion of the wiring component 30 can be connected to the terminal of the wiring coming from the vehicle body side. As a result, the wiring component 30 relays the wiring coming from the seat heater H to the rear end portion of the wiring component 30 so as to be connectable to the wiring coming from the vehicle body side in a laid state embedded in the cushion pad 20. The wiring component arranged on the seat back 2 side is configured such that the wiring terminal provided at the lower end portion thereof can be connected to the wiring terminal coming from the vehicle body side. As a result, the wiring component relays the wiring coming from the seat heater H to the lower end portion of the wiring component so that it can be connected to the wiring coming from the vehicle body side in a laid state embedded in the cushion pad.
By the way, returning to FIG. 2, the wiring component 30 is embedded in the cushion pad 20 by integral molding. Specifically, in the wiring component 30, the covering member 31 that covers the wiring 32 is formed of a polypropylene resin having excellent heat resistance. Therefore, by inserting the wiring component 30 at the time of foam molding of the cushion pad 20 (polyurethane resin) and integrally molding them, the wiring 32 disposed therein can be protected without melting the wiring component 30. However, it can be suitably embedded in the cushion pad 20.
In addition, the above-described suspension wire 35 is integrally formed on the wiring component 30. Accordingly, the support force for holding the skin cover 10 is secured by the holding force of the wiring component 30 embedded in the cushion pad 20. And since the wire 35 is arrange | positioned inside the suspension groove | channel 21, when the passenger | crew seats on the seat | sheet 1, it is difficult to feel the foreign material feeling of the wire 35. FIG. In addition, since the wiring component 30 is embedded along the position directly below the hanging groove 21, it is in an installed state where it is difficult to feel a foreign object like the wire 35.

Next, the configuration of the seat heater H will be described.
That is, the seat heater H (planar heating element) is integrally attached to the lining side of the skin cover 10 by stitching as shown in FIG. This sheet heater H is a known one in which heating lines are arranged in a pattern on a planar nonwoven fabric.
The seat heater H is placed between the skin cover 10 and the cushion pad 20 by placing the skin cover 10 on the cushion pad 20. Further, the seat heater H is removed from the cushion pad 20 together with the seat cover H by removing the skin cover 10 from the cushion pad 20.
Here, as described above, the seat heater H has a heater function that warms the seated area of the occupant. Therefore, the seat heater H is particularly effective when applied to the case where the skin cover 10 is formed of a material that easily feels a cold feeling in winter, such as a genuine leather or PVC leather.

Subsequently, a method of using the present embodiment will be described.
That is, as shown in FIG. 3, the wiring component 30 is embedded in the cushion pad 20, but the terminal 33 on the front side of the wiring 32 is exposed to the hanging groove 21. Therefore, in order to install the seat heater H adhered to the lining of the skin cover 10, first, the terminal Hc of the wiring Hw coming out from the seat heater H is connected to the terminal 33 of the wiring component 30. Then, the skin cover 10 is put on the cushion pad 20 and a necessary portion is hooked and stretched. Thereby, as shown in FIG. 2, the seat heater H is installed at a position between the skin cover 10 and the cushion pad 20. The wiring 32 is laid at a position where it is difficult to feel a foreign object when the occupant is seated on the seat 1 by the wiring component 30 embedded immediately below the hanging groove 21.
As described above, the seat heater H is removed from the cushion pad 20 together with the skin cover 10 by removing the skin cover 10 from the cushion pad 20.

  Thus, according to the wiring laying structure of the vehicle seat of the present embodiment, the wiring component 30 that can be connected to the seat heater H is buried at a position directly below the hanging groove 21 of the cushion pad 20. In a state where the wiring Hw of the seat heater H does not impair the seating feeling on the seat 1 and it is difficult to apply an excessive load or damage when covering the skin cover 10, It can be laid relatively easily inside. Furthermore, since the covering member 31 of the wiring component 30 is not melted at the time of integral molding with the cushion pad 20, the wiring component 30 can be suitably embedded in the cushion pad 20 while protecting the wiring 32 disposed therein. it can. Furthermore, since the wire 35 for suspending the skin cover 10 is formed integrally with the wiring component 30, the number of components handled at the time of integral molding with the cushion pad 20 can be reduced. And compared with the structure by which the wire 35 and the wiring component 30 are separately embed | buried under the cushion pad 20, this arrangement structure can be rationalized. Furthermore, since the seat heater H can be removed from the cushion pad 20 together with the skin cover 10 relatively easily, maintenance of the seat heater H can be facilitated. Further, the seat heater H can be easily installed together with the covering operation of the skin cover 10.

Although the embodiment of the present invention has been described with one example, the present invention can be implemented in various forms in addition to the above example.
For example, the covering member of the wiring component is not limited to one made of polypropylene resin, and other resin materials such as phenol resin that does not melt during foaming of the cushion pad can be applied. Moreover, it is not limited to a resin material, The industrial material provided with various heat resistance and fixed intensity | strength, such as a rubber material and a metal material, can be applied.
Moreover, the wiring component may be embed | buried along the hanging groove | channel extended in the left-right direction of a cushion pad. That is, the wiring component may be installed in an appropriate direction according to the direction in which the wiring coming out from the seat heater is to be laid.
Further, the wiring component burying position may be a position that does not impair the seating feeling on the seat, and may be a position immediately below the hanging groove or a position on the side. However, it is preferable to embed in the position immediately below as in the above embodiment because the influence on the seating feeling is minimal.
In addition, the seat heater may not be integrated with the skin cover, and may be a type that is separately installed on the cushion pad.
Further, the wiring component may not be embedded in the cushion pad by integral molding, and may be of a type that is separately inserted into the cushion pad later. However, in this case, a reinforcing structure for securing the installation strength of the wiring components may be required.

It is a schematic block diagram of the seat for seats. It is sectional drawing showing the internal structure by the side of a seat cushion. It is the perspective view which decomposed | disassembled and represented the component on the seat cushion side to the cushion pad side and the skin cover side. It is a block diagram showing the internal structure of wiring components.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 2 Seat back 3 Seat cushion 3f Cushion frame 3w Wire 10 Skin cover 11 Seating cover part 12 框 Cover part 13 Sewing part 14 Hanging bag 14w Wire 20 Cushion pad 20a Seating surface 21 Hanging groove 22 Hanging groove 30 Wiring part 31 Cover member 32 Wiring 33 Terminal 34 Terminal 35 Wire H Seat heater (heater means)
Hw wiring Hc terminal C hanging ring

Claims (4)

A wiring laying structure for a vehicle seat for laying wiring for an electric appliance disposed on the seat for the vehicle,
The electric appliance is a planar heater means that can warm the part seated on the seat,
The heater means is disposed at a position between a cushion pad that constitutes a seat back or a seat cushion and a skin cover that covers the cushion pad,
On the surface portion of the cushion pad on which the seating load is received, a recessed groove for pulling and holding the skin cover is formed,
The vehicle seat wiring laying structure is characterized in that wiring parts that can be connected to wiring coming from the heater means side are embedded in the cushion pad along the hanging grooves. The wiring structure for a vehicle seat according to claim 1,
The wiring component is embedded in the cushion pad by integral molding, and includes a covering member that covers the wiring connected to the wiring coming from the heater means side,
The wiring structure for a vehicle seat, wherein the covering member is formed of a material that does not melt when integrally formed with the cushion pad. A wiring laying structure for a vehicle seat according to claim 1 or 2,
The wiring of the vehicle seat characterized in that the wiring component is integrally formed with a wire for suspension that can hold the skin cover pulled in the suspension groove of the cushion pad. Laying structure. A wiring laying structure for a vehicle seat according to any one of claims 1 to 3,
The planar heater means is integrally attached to the lining side of the skin cover,
The wiring terminal of the wiring component embedded in the cushion pad is in a state exposed in the hanging groove,
A wiring laying structure for a vehicle seat, wherein a terminal of the wiring on the heater means side is connected to a wiring terminal of a wiring component provided exposed in the hanging groove.

Images