WO2020158671A1 - Vehicle seat - Google Patents

Abstract

A vehicle seat comprising a cushion frame (1) and a seating sensor (10) disposed below a cushion pad, wherein the cushion frame (1) has a pressure receiving member (5) that receives a load of an occupant; the seating sensor (10) is connected at least to a harness (13) routed between the seating sensor (10) and a point P spaced apart laterally from the seating sensor (10); and a first sub-cable (15) which is a portion of the harness (13) extending from a point P, which is spaced apart laterally, to the seating sensor (10) is fixed to the pressure receiving member (5) at a first fixing point (F1) disposed adjacent to the seating sensor (10) at one side in the front-rear direction. As a result, the harness (13) for the seating sensor (10) can be efficiently routed.

Description

Vehicle seat

The present invention relates to a vehicle seat.

BACKGROUND ART Conventionally, as disclosed in Patent Document 1, a vehicle seat is known in which a seating sensor that detects whether or not an occupant is seated on a seat is arranged below a cushion pad of a seat cushion. ..
The seating sensor described in Patent Document 1 is mounted on a bracket bridged via an elastic portion between the S spring frames that receive the load of an occupant seated on the seat, and there is a large local load. Even if it does, the seat sensor can be prevented from being damaged.

JP, 2016-88467, A

By the way, it is not easy to secure a large space under the cushion pad. Therefore, problems such as difficulty in absorbing dimensional tolerances tend to occur when installing the harness of the seating sensor arranged under the cushion pad, and the harness of the seating sensor arranged under the cushion pad can be efficiently used. It is required to be routed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle seat capable of efficiently arranging a harness of a seating sensor.

In order to solve the above problems, the invention according to claim 1 is a cushion frame that forms a skeleton of a seat cushion that supports a person's thighs and buttocks, and a cushion pad provided on the cushion frame. A seat for a vehicle provided with a seating sensor arranged below the cushion pad,
The cushion frame has a pressure receiving member that receives a load of an occupant,
The seating sensor is connected to at least a harness arranged between the seating sensor and a point separated laterally of the seating sensor,
A portion of the harness between the sidewardly spaced point and the seating sensor is fixed to the pressure receiving member at a first fixing point that is arranged adjacent to the seating sensor on one side in the front-rear direction. It is characterized by

According to a second aspect of the present invention, in the vehicle seat according to the first aspect, the seating sensor is arranged above the pressure receiving member in a widthwise central region of the seat cushion.
The harness is arranged below the pressure receiving member.

According to a third aspect of the present invention, in the vehicle seat according to the first or second aspect, the seating sensor is arranged to be displaced to the left or right of the center portion in the width direction of the seat cushion.
The harness is fixed to the seating sensor side with respect to the pressure receiving member.

According to a fourth aspect of the present invention, in the vehicle seat according to any one of the first to third aspects, the harness is extended so as to be separated from the seating sensor in a width direction of the seat cushion, It is fixed to the first fixing point in a state of being bent in a direction approaching the seating sensor.

According to a fifth aspect of the invention, in the vehicle seat according to the fourth aspect, the harness extends in the width direction of the seat cushion after the harness is extended so as to be separated from the seat sensor to the outer side in the width direction of the seat cushion. It is characterized in that it is fixed to the first fixing point while being bent inward.

According to a sixth aspect of the present invention, in the vehicle seat according to any one of the first to fifth aspects, the harness is fixed to the first fixing point in a state of being bent so as to be vertically overlapped. It is characterized by

According to a seventh aspect of the present invention, in the vehicle seat according to the sixth aspect, the harness is fixed to the first fixing point in a state of being vertically overlapped by a clip member,
The clip member is arranged so that the harness can be extended in the width direction of the seat cushion.

The invention according to claim 8 is the vehicle seat according to any one of claims 1 to 7, wherein a second fixing point is provided outside the first fixing point in the width direction of the seat cushion,
There is a point spaced apart laterally outside the seat cushion in the width direction of the second fixed point,
At the second fixing point, the harness is fixed so as to extend toward a point spaced apart laterally.

The invention according to claim 9 is the vehicle seat according to claim 8, wherein the harness is fixed to the second fixing point by a clip member,
The clip member is arranged so as to be extendable in a direction toward a point where the harness is separated laterally.

The invention according to claim 10 is the vehicle seat according to claim 8 or 9, wherein the harness is fixed to the first fixing point and the second fixing point by a clip member,
The extension direction of the harness by the clip member at the first fixing point and the extension direction of the harness by the clip member at the second fixing point are directions intersecting with each other.

According to the invention as set forth in claim 1, a portion of the harness connected to the seating sensor, which is located between the sidewardly spaced point and the seating sensor, is arranged adjacent to the seating sensor on one side in the front-rear direction. Since the first fixing point is fixed to the pressure receiving member, the harness can be routed so as to be offset to the first fixing point on one side in the front-rear direction. As a result, for example, as compared with the case where the harness is linearly extended from the sidewardly spaced point to the seating sensor, there is a margin in the length of the harness. It is possible to absorb the dimensional tolerance in the interval up to and to efficiently arrange the harness of the seating sensor.

According to the invention described in claim 2, the seating sensor is arranged above the pressure receiving member in the central region in the width direction of the seat cushion, and the harness is arranged below the pressure receiving member. Since it is located below the seating sensor, the sensing by the seating sensor is less likely to be hindered as compared with the case where the harness is arranged above the pressure receiving member, for example.

According to the invention as set forth in claim 3, the seating sensor is arranged so as to be displaced to one of the left and right sides with respect to the center portion in the width direction of the seat cushion, and the harness is brought closer to the seating sensor side with respect to the pressure receiving member. Since the first fixing point can be arranged in the vicinity of the seating sensor, the first fixing point can be contributed to the efficient wiring of the harness.

According to the invention of claim 4, the harness is fixed to the first fixing point in a state of being bent in a direction approaching the seating sensor after extending so as to be separated from the seating sensor in the width direction of the seat cushion. Therefore, it is easy to give a margin to the length of the harness in the width direction of the seat cushion.

According to the invention of claim 5, the harness is fixed to the first fixing point in a state of being bent inward in the width direction of the seat cushion, after being extended so as to be separated from the seating sensor to the outside in the width direction of the seat cushion. Therefore, the length of the harness can be easily provided in the width direction of the seat cushion.

According to the invention of claim 6, since the harness is fixed to the first fixing point in a state of being bent so as to be vertically overlapped, for example, when the connection of the harness to the seating sensor is switched to the left and right, It is possible to suppress the occurrence of twist. As a result, the harness can be connected to the seating sensor from either the left side or the right side, which contributes to efficient wiring of the harness.

According to the invention described in claim 7, the harness is fixed to the first fixing point in a state of being vertically overlapped by the clip member, and the clip member is oriented so as to extend the harness in the width direction of the seat cushion. Since the harness is arranged, the harness can be properly arranged by the clip member, and it is easy to give a margin to the length of the harness in the width direction of the seat cushion.

According to the invention as set forth in claim 8, there is a second fixing point on the outer side in the width direction of the seat cushion than the first fixing point, and a point spaced apart laterally on the outer side in the width direction of the seat cushion from the second fixing point. Since the harness is fixed so as to extend toward the sidewardly spaced points at the second fixing point, the length of the harness is fixed between the first fixing point and the second fixing point. Easy to afford. That is, it is possible to bend the harness between the first fixing point and the second fixing point, and it is easy to absorb the dimensional tolerance in the distance from the laterally separated point to the seating sensor.

According to the invention described in claim 9, the harness is fixed to the second fixing point by a clip member, and the clip member is arranged in an orientation that can be extended in a direction toward a point where the harness is separated laterally. Therefore, the clip member can appropriately arrange the harness, which contributes to efficient wiring of the harness.

According to the invention described in claim 10, the harness is fixed to the first fixing point and the second fixing point by the clip member, and the extension direction of the harness by the clip member at the first fixing point and the second fixing point. Since the extending direction of the harness by the clip member is a direction intersecting with each other, it is easy to provide a margin in the length of the harness between the first fixing point and the second fixing point.

It is a perspective view showing a seat frame which constitutes a frame of a vehicle seat. It is a perspective view showing the seating sensor vicinity provided in the cushion frame. It is a bottom view which shows the back surface side of a seat frame. FIG. 6 is an enlarged view showing the vicinity of the main part on the back surface side of the cushion frame. FIG. 7 is an enlarged perspective view showing the vicinity of the main part on the back surface side of the cushion frame. It is an expansion perspective view which shows the clip member attached to the pan frame. It is a front view which shows the whole structure of a clip member. It is a top view which shows a seat frame. It is a perspective view which shows the back surface side of a cushion frame. FIG. 7 is a perspective view showing the vicinity of the main part on the back surface side of the cushion frame with the cushion side frame and the like omitted. FIG. 4 is a cross-sectional view showing the vicinity of the main part on the back surface side of the cushion frame with the cushion side frame and the like omitted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, various technically preferable limitations for carrying out the present invention are added to the embodiments described below, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Absent.

[First Embodiment]
The vehicle seat in the present embodiment includes at least a seat cushion that supports a person's thighs and buttocks, and a seat back that has a lower end supported by the seat cushion and serves as a backrest. If necessary, a headrest that supports a person's head, an armrest that supports a person's arm, and an auxiliary support section such as an ottoman that supports a person's leg are provided.
Such a vehicle seat is supposed to be provided in an automobile that is a passenger car, but is not limited to this, and may be provided in another automobile such as a bus or a truck, or a railway, a ship, or an aircraft. It may be provided in vehicles other than automobiles such as.

In FIG. 1, reference numeral 1 indicates a cushion frame forming a skeleton of a seat cushion, and reference numeral 8 indicates a back frame forming a skeleton of a seat back.
The seat cushion includes a cushion frame 1, a cushion pad (not shown) provided on the cushion frame 1, and a skin (not shown) that covers the cushion frame 1 and the cushion pad to form a surface of the seat cushion. Mainly composed.
Similarly, the seat back includes a back frame 8, a cushion pad (not shown) provided in front of the back frame 8, and a skin (not shown) that covers the back frame 8 and the cushion pad to form the surface of the seat back. Mainly composed of
The back frame 8 is provided with a side airbag 8a that inflates when the vehicle receives an impact equal to or more than a collision from the side of the vehicle at a certain speed or more. The side airbag 8a is arranged outside the vehicle. Further, the side airbag 8a is linked with a seating sensor 10 described later, and is set so as not to operate when a person is not sitting on the vehicle seat.

The cushion frame 1 includes a pair of left and right cushion side frames 2 and 3, a back pipe frame 4 connecting the rear end portions of the cushion side frames 2 and 3, and a space between the cushion side frames 2 and 3 and the back pipe frame 4. It is mainly configured by a pan frame 50 (same as the first pan frame 50 in the second embodiment described later) as a pressure receiving member that is bridged over and connected to each other.
Below the cushion frame 1, a pair of left and right slide rails 6 and 7 for sliding the cushion frame 1 to arbitrary front and rear positions with respect to the floor of the vehicle based on an operation of an occupant are provided. The left slide rail 6 is attached to the left cushion side frame 2, and the right slide rail 7 is attached to the right cushion side frame 3.

A cushion pad that constitutes a seat cushion together with the cushion frame 1 is provided on the pan frame 50.
The pan frame 50 is a pressure receiving member made of a metal plate material that receives a load of an occupant, is formed in a substantially box shape, and can accommodate a cushion pad.

As shown in FIGS. 1 and 2, a concave portion 50a that is one step lower than the upper surface of the pan frame 50 is provided in the central region in the width direction of the upper surface of the pan frame 50, and the sensor 10 is provided in the concave portion 50a. It is arranged. Openings 50b that connect the front side and the back side of the pan frame 50 are formed on both left and right sides of the concave portion 50a.
The sensor 10 is, for example, a seating sensor (also referred to as a position sensor) capable of detecting whether or not an occupant is seated on the seat. That is, the seating sensor 10 is arranged above the pan frame 50, which is a pressure receiving member, in the center region of the seat cushion in the width direction.
Further, the recessed portion 50a is arranged in the widthwise central region of the upper surface of the pan frame 50 so as to be offset to the left or right (right side in this embodiment) from the central portion. As a result, a wider space can be secured on the left side of the concave portion 50a in the pan frame 50 than on the right side. Furthermore, when the seating sensor 10 is provided in the recessed portions 50a that are arranged so as to be offset to the left and right, the vicinity of the occupant's ischium is likely to hit the seating sensor 10 and the sensing accuracy is likely to be improved.

Although the seating sensor 10 may be directly attached to the recessed portion 50a, the seating sensor 10 in this embodiment is fixed to the mounting bracket 11, and the mounting bracket 11 to which the seating sensor 10 is fixed is arranged in the recessed portion 50a. It is like this.
When a so-called S spring frame is adopted as the pressure receiving member instead of the pan frame 50, although not shown, a bracket member that forms the concave portion 50a is bridged between the S spring frames, and The seating sensor 10 is fixed to the seat.

When the occupant sits on the vehicle seat, the occupant's load is applied to the seating sensor 10 via the cushion pad. At that time, if the seating sensor 10 is attached to the recessed portion 50a via the mounting bracket 11, the mounting bracket 11 absorbs a part of the load of the occupant when the seating sensor 10 is applied. The influence of the load of the occupant on the seating sensor 10 is reduced as compared with the case where the occupant is directly attached to the concave portion 50a.

As shown in FIGS. 1 to 3, the seating sensor 10 is formed flat in a harness 13 (also referred to as a wire harness or a cable harness) that electrically connects the seating sensor 10 and the external device 12. The flat cable 15a is connected.
The flat cable 15a is a cable integrally connected to a first sub-cable 15 described later, and is passed through one of the openings 50b among the openings 50b formed on both sides of the concave portion 50a, The wiring is provided on the back side (lower side) of the pan frame 50. In the present embodiment, the flat cable 15a is passed through the opening 50b on the left side.
The external device 12 is a control device (ECU: Electric Control) for controlling, for example, a power supply device, a signal processing device from the seating sensor 10, and electric components (motors, sensors, blowers, etc.) mounted on the vehicle seat. Unit) and the like, and in this embodiment, the ECU is adopted as the external device 12 (the same as the control device 12 in the second embodiment described later).
The external device 12, which is an ECU, is provided on the back surface (lower surface) of the cushion frame 1 together with the harness 13, and is also connected to other harnesses or cables other than the harness 13. More specifically, the external device 12 is arranged on one side (right side) in the left-right direction on the back surface of the pan frame 50 in the cushion frame 1.

The harness 13 includes a main cable 14, and a first sub cable 15 and a second sub cable 16 branching from the main cable 14.
In addition, in the present embodiment, a description will be given of the harness 13 in which a plurality of electric wires (cables) used for power supply and signal communication are bundled into a collective component, but replaced with a single cable (first sub-cable 15). May be.
The harness 13 is arranged on the back side (lower side) of the pan frame 50 except for the flat cable 15a.

As shown in FIG. 3, the main cable 14 is connected to the external device 12, and has a branch portion 14 a on the side opposite to the side connected to the external device 12.
The branch portion 14a is arranged at a point separated laterally of the seating sensor 10. The point refers to a peripheral region of a portion of the back surface of the pan frame 50, which is separated laterally (to the left in the present embodiment) of the concave portion 50a. More specifically, it refers to the peripheral region of the left and right ends of the back surface of the pan frame 50, which are spaced apart from the recess 50a in the left and right direction. That is, the recessed portion 50a and the point separated laterally of the seating sensor 10 have a positional relationship such that at least a part of each is arranged on the same vertical surface in the left-right direction of the pan frame 50.
Then, the main cable 14 is fixed by a clip member 20 (described later) at a point (hereinafter, point P) separated laterally from the seating sensor 10, and the branch portion 14a is also arranged at the point P.

The first sub-cable 15 is a cable that extends by branching from the second sub-cable 16 at the branching portion 14a, and a flat cable 15a connected to the seating sensor 10 is integrated at the end portion on the side closer to the seating sensor 10. And a connector 15b for connecting the one round cable and the other round cable in the middle of the first sub-cable 15.
That is, such a first sub-cable 15 is routed from the point P to the concave portion 50a, and the flat cable 15a connected to the second sub-cable 16 at the branching portion 14a is integrally connected. It is connected to the seating sensor 10.
The flat cable 15a is integrally connected to the first sub cable 15 in this embodiment. (That is, the flat cable 15a is a separate member from the first sub cable 15 and is provided for the first sub cable 15 for connection with the seating sensor 10.) However, the present invention is not limited to this, and the flat cable 15a may be integrated with the first sub cable 15.

The second sub-cable 16 is a cable that branches and extends from the first sub-cable 15 at the branch portion 14a, is arranged along the width direction of the seat cushion, and is connected to another cable via a connector.

Further, clip members 20 and 30 are appropriately used to fix the main cable 14 and the first sub cable 15 of the harness 13 to the pan frame 50.
Therefore, the pan frame 50 is formed with a plurality of mounting holes to which the clip members 20 and 30 are mounted and locked.

As shown in FIGS. 6 and 7, the clip member 20 includes a locking portion 21 that is locked to the pan frame 50, a holding portion 22 that holds the main cable 14 or the first sub cable 15, and a locking portion 21. And a supporting portion 23 arranged at a position sandwiching the pan frame 50. In this embodiment, the locking portion 21, the holding portion 22, and the support portion 23 are integrally formed.

The locking portion 21 has a base portion 21a and locking pieces 21b protruding from the base portion 21a on both sides of the base portion 21a. The locking piece 21b is elastically deformable, and is locked to the front surface side (upper surface side) of the pan frame 50 when the base portion 21a is inserted into the mounting hole formed in the pan frame 50.

The holding portion 22 includes a holding portion main body 22a and a band 22b provided on the holding portion main body 22a. The holding portion main body 22a is connected to the base end of the band 22b and has a retaining hole 22c for retaining the inserted band 22b.
The main cable 14 or the first sub-cable 15 is held in a ring formed by inserting the band 22b into the retaining hole 22c.

Note that the support portion 23 has a disc spring shape whose outer peripheral portion abuts the pan frame 50. Therefore, the base portion 21a of the locking portion 21 elastically deforms when it is inserted into the mounting hole formed in the pan frame 50, and elastically returns after the base portion 21a is inserted into the mounting hole. As a result, the locked state of the clip member 20 with respect to the pan frame 50 can be improved.

As shown in FIGS. 3 to 6, the clip member 30 is a clip member for the connector 15b in the first sub-cable 15, and has a locking portion 31 locked to the pan frame 50 and a lower end portion of the connector 15b. The engaging portion 32 that is engaged, and the support portion 23 that is arranged at a position that sandwiches the pan frame 50 together with the locking portion 31 are provided. In this embodiment, the locking portion 31, the engaging portion 32, and the support portion 33 are integrally formed.

The locking portion 31 is configured to have a base portion and a locking piece, like the locking portion 21 of the clip member 20.
The engaging portion 32 is inserted into a groove portion with a protruding piece formed at the lower end portion of the connector 15b and engaged with the connector 15b.
The support portion 33 is configured like a disc spring like the support portion 23 of the clip member 20.

In addition, as shown in FIG. 3, the first sub-cable 15 and the second sub-cable 16 that configure the harness 13 and other cables are provided on the other side (left) in the left-right direction on the back surface of the pan frame 50 in the cushion frame 1. It is arranged. The cables (various cables including the main cable 14) connected to one side (right side) in the left-right direction are routed so as to be directed to the other side (left).
That is, on the back surface of the pan frame 50 in the cushion frame 1, the external device 12 is arranged on one side in the left-right direction, and the harness 13 (14 to 16) and other cables (including the branch portion 14a) on the other side. Are arranged together. The seating sensor 10 is in a state of being provided between the external device 12 and the harnesses 13 and the like that are collectively arranged. This makes it possible to avoid interference between the external device 12 and the harness 13 or the like.

Although not shown, the harness 13 and the like arranged on the other side in the left-right direction on the back surface of the pan frame 50 includes a heater harness connected to a heater device for warming the seat cushion. The heater device cooperates with the seating sensor 10 and is set so as not to operate when a person is not sitting on the vehicle seat.
The flat cable 15a is connected to the seating sensor 10 on the side where the heater harness and the side airbag 8a are provided. As a result, the seating sensor 10 and the heater device or the side airbag 8a can be easily linked by a cable or the like.

The following describes in more detail the wiring of the first sub-cable 15. The first sub-cable 15 is arranged on the back surface side (lower side) of the pan frame 50.

A first fixing point F1 is arranged adjacent to one side of the seating sensor 10 in the front-rear direction (front side in the present embodiment). The first fixed point F1 refers to a peripheral region of a portion of the back surface of the pan frame 50, which is arranged at a distance from the concave portion 50a to the front side. In the present embodiment, the first fixed point F1 is on the diagonally right front side of the concave portion 50a.
As the first sub cable 15, a round cable extending from the flat cable 15a is fixed to the back surface of the pan frame 50 at the first fixing point F1. The fixing to the pan frame 50 is performed by the clip member 20.

When fixing the 1st sub cable 15 at the 1st fixed point F1, it is fixed near the seating sensor 10 side. More specifically, the first sub-cable 15 extends from the seat sensor 10 to the left side in the width direction of the seat cushion, and then bends in a direction approaching the seat sensor 10 (refer to a portion in the bent state). , Hereinafter, referred to as a first curved portion 15c), and is fixed to the first fixed point F1.
The first sub-cable 15 extends at a position of the first bending portion 15c so as to be separated from the seating sensor 10 in the width direction of the seat cushion, and then is routed in a state of being bent in a direction approaching the seating sensor 10 and extending. It is fixed to the first fixed point F1 at the end. More specifically, the first sub-cable 15 extends from the seating sensor 10 to the outer side (left side) in the width direction of the seat cushion, and then bends to the inner side (right side) in the width direction of the seat cushion. It is fixed at the fixed point F1.
That is, as shown in FIGS. 4 and 5, the first curved portion 15c gradually curves to the front side from the flat cable 15a toward the point P, and finally extends to the side opposite to the point P. ..

Further, when the first sub-cable 15 is fixed to the first fixing point F1, it is bent so as to be vertically overlapped (the bent portion is hereinafter referred to as a second bent portion 15d). It is fixed to the first fixed point F1. That is, the second curved portion 15d of the first sub-cable 15 is fixed to the first fixing point F1 by the clip member 20 while being vertically overlapped.
Since the second curved portion 15d is vertically overlapped, the extension direction of the first sub-cable 15 is changed by 180 degrees from rightward to leftward. That is, the first sub cable 15 is bent at the second curved portion 15d.
The clip member 20 is arranged so that the first sub-cable 15 can be extended in the width direction of the seat cushion. That is, the clip member 20 is arranged so that the ring formed by inserting the band 22b into the retaining hole 22c opens in the left-right direction. The first sub-cable 15 is held by the clip member 20 by being inserted into such a ring in a state of being vertically overlapped and bent.

A second fixing point F2 is located outside the first fixing point F1 in the width direction of the seat cushion. In the present embodiment, the second fixed point F2 is arranged on the right side of the first fixed point F1 with a short interval. The second fixed point F2 is located on the inner side in the width direction of the seat cushion with respect to the point P. In other words, there is a point P where the branch portion 14a is provided, outside the second fixed point F2 in the width direction of the seat cushion. More specifically, the point P is located diagonally left behind the second fixed point F2.
The first sub-cable 15 extends from the first fixed point F1 toward the second fixed point F2. When the first sub-cable 15 is fixed to the second fixing point F2, the first sub-cable 15 is bent to one side in the front-rear direction (front side in the present embodiment) (hereinafter, the part in the bent state is referred to as It is fixed to the second fixed point F2 at the third curved portion 15e.
Then, the first sub-cable 15 is fixed so as to extend toward the point P at the second fixed point F2.

In the present embodiment, the second fixing point F2 is a place where the connector 15b of the first sub cable 15 is fixed. Therefore, the clip member 30 for the connector 15b is provided at the second fixing point F2.
That is, in the first sub-cable 15, the portion of the connector 15b is fixed to the second fixing point F2 by the clip member 30 for the connector 15b.

Further, the clip member 30 is arranged in such a direction that the first sub-cable 15 can be extended in the direction toward the point P. That is, the engaging portion 32 of the clip member 30 is inserted into the groove portion with the projecting piece formed at the lower end portion of the connector 15b as described above, and the insertion direction (or the opposite direction) and The direction in which the one sub-cable 15 extends to the point P is aligned. As a result, the first sub-cable 15 extends diagonally left rearward from the second fixed point F2 toward the point P.

The extension direction of the first sub cable 15 by the clip member 20 at the first fixing point F1 and the extension direction of the first sub cable 15 by the clip member 30 at the second fixing point F2 are directions intersecting with each other.
That is, the second fixed point F2 is on the right side of the first fixed point F1, and the first sub cable 15 between the first fixed point F1 and the second fixed point F2 extends in the left-right direction. There is a point P diagonally left rear of the second fixed point F2, and the first sub-cable 15 between the second fixed point F2 and the point P extends diagonally.

Then, the distance between the seating sensor 10 and the first fixed point F1, the distance between the first fixed point F1 and the second fixed point F2, the distance between the second fixed point F2 and the point P, the sum of the respective dimensions is It is set shorter than the length dimension of the first sub-cable 15 including the flat cable 15a and the connector 15b. In other words, since the first sub-cable 15 is routed while forming the first curved portion 15c, the second curved portion 15d, and the third curved portion 15e, the above-mentioned respective distances are added together. Is also long.

The first sub-cable 15 is routed on the back surface side (lower side) of the pan frame 50 as described above.
In addition, the overall arrangement including the harness 13, the external device 12, and other harnesses as described above is appropriately line-symmetrically arranged according to conditions such as whether the vehicle seat is disposed on the left or right of the vehicle. May be.

According to the present embodiment, the first sub-cable 15 which is a portion between the seat P and the seat P in the harness 13 connected to the seat sensor 10 is separated from the seat sensor 10. Since it is fixed to the pan frame 50 at the first fixing points F1 arranged adjacent to each other on the one side in the front-rear direction, the harness 13 can be routed so as to be offset to the first fixing point F1 on the one side in the front-rear direction. As a result, for example, compared to a case where the harness 13 is linearly extended from the sidewardly spaced point P to the seating sensor 10, there is a margin in the length of the harness 13, so that the harness 13 is separated laterally. The dimensional tolerance in the distance from the point P to the seating sensor 10 can be absorbed, and the harness 13 of the seating sensor 10 can be efficiently routed.

Further, the seating sensor 10 is arranged on the upper side of the pan frame 50 in the widthwise central region of the seat cushion, and the first sub-cable 15 in the harness 13 is arranged on the lower side of the pan frame 50. The one sub-cable 15 is positioned below the seating sensor 10, and the sensing by the seating sensor 10 is less likely to be hindered as compared with the case where the first sub-cable 15 is arranged above the pan frame 50, for example. ..

Further, the seating sensor 10 is arranged so as to be displaced to the left or right of the widthwise center portion of the seat cushion, and the first sub-cable 15 in the harness 13 is located on the seating sensor 10 side with respect to the pan frame 50. Since they are brought close to each other and fixed, the first fixing point F1 can be arranged in the vicinity of the seating sensor 10, which contributes to efficient wiring of the first sub cable 15 in the harness 13.

In addition, the first sub-cable 15 in the harness 13 extends in the width direction of the seat cushion from the seat sensor 10 and then extends in the width direction of the seat cushion, and then bends in a direction approaching the seat sensor 10 (first bent portion 15c). Since it is fixed to the fixed point F1, it is easy to give a margin to the length of the first sub cable 15 in the width direction of the seat cushion.

In addition, the first sub-cable 15 in the harness 13 extends from the seating sensor 10 to the outer side in the width direction of the seat cushion, and then is fixed to the first fixing point F1 while being bent in the width direction inward of the seat cushion. Therefore, the length of the first sub-cable 15 can be easily provided in the width direction of the seat cushion.

Further, since the first sub-cable 15 in the harness 13 is fixed to the first fixing point F1 in a state of being bent so as to be vertically overlapped (second curved portion 15d), for example, the first sub-cable 15 for the seating sensor 10 is provided. It is possible to prevent the first sub-cable 15 from being twisted when the connection is switched between left and right. As a result, the first sub-cable 15 can be connected to the seating sensor 10 from either the left side or the right side, which contributes to efficient routing of the first sub-cable 15.

In addition, the first sub-cable 15 in the harness 13 is fixed to the first fixing point F1 by the clip member 20 in a state of being vertically overlapped, and the clip member 20 moves the first sub-cable 15 in the width direction of the seat cushion. Since the first sub-cable 15 is appropriately arranged by the clip member 20, the first sub-cable 15 can be easily provided with a margin in the width direction of the seat cushion.

Further, there is a second fixing point F2 on the outer side of the seat cushion in the width direction than the first fixing point F1, and a point P that is separated laterally on the outer side of the seat cushion in the width direction of the second fixing point F2. Since the first sub-cable 15 is fixed at the second fixing point F2 so as to extend toward the sidewardly spaced point P, between the first fixing point F1 and the second fixing point F2. It is easy to give a margin to the length of the first sub cable 15. That is, it becomes possible to bend the first sub-cable 15 between the first fixed point F1 and the second fixed point F2 (the third curved portion 15e), and from the sidewardly spaced point P to the seating sensor 10. It is easy to absorb the dimensional tolerance in the interval.

Further, the first sub cable 15 in the harness 13 is fixed to the second fixing point F2 by the clip member 30, and the clip member 30 extends in the direction toward the point P that laterally separates the first sub cable 15. Since the first sub-cable 15 is properly arranged by the clip member 30 because it is arranged in the possible orientation, it can contribute to the efficient wiring of the first sub-cable 15.

The first sub-cable 15 in the harness 13 is fixed to the first fixing point F1 and the second fixing point F2 by the clip members 20 and 30, and the first sub-cable 15 by the clip member 20 at the first fixing point F1. And the extension direction of the first sub-cable 15 by the clip member 30 at the second fixing point F2 intersect with each other. Therefore, between the first fixing point F1 and the second fixing point F2, It is easy to give a margin to the length of one sub cable 15.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, the same parts as those in the first embodiment will be designated by the same reference numerals, and the description will be given with an emphasis on the components different from those in the first embodiment. explain.

A space is often formed between the seat cushion and the floor panel of the vehicle seat, and the hand or finger of an occupant may be inserted into the space, or a tool may be inserted during maintenance, for example. On the other hand, on the lower surface of the seat cushion, there is a portion where the performance of the seat cushion should be maintained (for example, a pressure receiving member that receives the load of an occupant). Therefore, it is required to prevent the occurrence of a situation in which such a portion is abruptly removed from the cushion frame by a hand/finger or a tool placed in the gap.
Therefore, conventionally, as described in Japanese Patent Laid-Open No. 2016-037272, a resin molded product cover is attached to the lower surface of the seat cushion, or a seat cushion entirely covered with a skin material is fixed to a vehicle floor panel. By doing so, a technique of covering the entire lower surface of the seat cushion in the vehicle seat is known.

By the way, an ECU (Electronic Control Unit) device for controlling electric components mounted on the vehicle seat is attached to the lower surface of the seat cushion of the vehicle seat, or the vehicle seat is moved forward and backward with respect to the floor panel. In some cases, a slide mechanism that slides in the direction may be provided. Therefore, if the entire lower surface of the seat cushion is covered with a cover as in the conventional case, the maintenance work of the ECU device and the operation of the slide mechanism may be hindered.
However, on the other hand, there is also a demand for protecting the portion of the lower surface of the seat cushion where the performance of the seat cushion should be maintained.
Therefore, it is required to protect the portion to be protected without covering the entire lower surface of the seat cushion.

In order to solve such a problem, an eleventh invention shown in the present embodiment is a vehicle seat including a cushion frame forming a skeleton of a seat cushion,
The cushion frame is
A first pan frame that is located on the rear side of the cushion frame and receives the load of an occupant,
A second pan frame that is located on the front side of the first pan frame and receives a load of an occupant,
Positioned between the first pan frame and the second pan frame, and has a front frame to which the front end of the first pan frame is attached,
On the lower surface of the second pan frame, a control device for controlling the operation of the electrical components mounted on the vehicle seat is provided,
A mounting portion of the first pan frame with respect to the front frame is a protection target, and the mounting portion and the control device are arranged adjacent to each other in the front-rear direction.

The twelfth invention shown in the present embodiment is characterized in that, in the vehicle seat of the eleventh invention, the lower surface of the control device is located below the mounting portion.

A thirteenth invention shown in the present embodiment is the vehicle seat of the eleventh or twelfth invention, wherein a side end portion of the front frame is formed to be curved,
The curved side end faces a side surface of the control device.

A fourteenth invention shown in the present embodiment is characterized in that, in the vehicle seat of the thirteenth invention, the control device is arranged closer to the center of the seat than the curved side end portion.

A fifteenth invention shown in the present embodiment is that in the vehicle seat according to any one of the eleventh to fourteenth inventions, a front side surface of the mounting portion and a rear side surface of the control device face each other. Characterize.

A sixteenth invention shown in the present embodiment is the vehicle seat according to any one of the eleventh to fifteenth inventions, wherein the lower surface of the second pan frame is recessed upward from the second pan frame. A shaped recess is formed,
The control device is arranged and fixed on the lower surface of the second pan frame across the recess.

A seventeenth invention shown in the present embodiment is the vehicle seat according to any one of the eleventh to sixteenth inventions,
The seat cushion is
The cushion frame,
A cushion pad provided on the upper surfaces of the first pan frame and the second pan frame in the cushion frame,
A skin covering the cushion pad from the peripheral portions of the first pan frame and the second pan frame.

According to the eleventh invention, for example, even if a passenger's hand or fingers are put in from the front into the gap formed between the seat cushion and the floor panel, or a tool is put in at the time of maintenance, the object to be protected is protected. Therefore, the control device comes into contact with the control device before the attachment part. In other words, the control device acts as a barrier against the hands/fingers and objects that have entered through the gap, making it difficult to access the attachment site that is the protection target. Makes it easier to protect. As a result, it is possible to suppress the occurrence of a situation in which the first pan frame comes off the front frame.

According to the twelfth aspect, since the lower surface of the control device is located below the attachment site, the control device easily becomes a barrier against a hand/finger or an object that has entered through the gap, and is a protection target. Access to the site becomes more difficult.

According to the thirteenth aspect, since the curved side end portion of the front frame faces the side surface of the control device, the curved side end portion makes it more difficult to access the attachment site to be protected. Become.

According to the fourteenth aspect, the control device is disposed closer to the seat center side than the curved side end portion. Therefore, for example, the control device is laterally provided in a gap formed between the seat cushion and the floor panel. The curved side edges make it more difficult to access the mounting site to be protected, even if the user's hands or fingers are put in or tools are put in during maintenance.

According to the fifteenth aspect, since the front side surface of the mounting portion and the rear side surface of the control device face each other, it becomes difficult for the control device to access the front side surface of the mounting portion to be protected.

According to the sixteenth aspect, the rigidity of the second pan frame can be improved by the recess, and the control device can be provided in the part where the rigidity is improved as described above. Therefore, the control device is fixed to the second pan frame. The state can be made stable and strong.

According to the seventeenth invention, since the outer skin covers the cushion pads from the peripheral portions of the first pan frame and the second pan frame, it is easy to perform maintenance work on the control device without covering the entire lower surface of the seat cushion.

Next, the present embodiment will be described in more detail. A vehicle seat includes a seat cushion that supports a person's thighs and buttocks, and a seat back that has a lower end supported by the seat cushion and serves as a backrest. , At least. If necessary, a headrest that supports a person's head, an armrest that supports a person's arm, and an auxiliary support section such as an ottoman that supports a person's leg are provided.
Such a vehicle seat is supposed to be provided in an automobile that is a passenger car, but is not limited to this, and may be provided in another automobile such as a bus or a truck, or a railway, a ship, or an aircraft. It may be provided in vehicles other than automobiles such as.

1, FIG. 3, and FIG. 8, reference numeral 1 indicates a cushion frame forming a skeleton of a seat cushion, and reference numeral 8 indicates a back frame forming a skeleton of a seat back.
The seat cushion includes a cushion frame 1, a cushion pad (not shown) provided on the cushion frame 1, and a skin (not shown) that covers the cushion frame 1 and the cushion pad to form a surface of the seat cushion. Mainly composed.
Similarly, the seat back includes a back frame 8, a cushion pad (not shown) provided in front of the back frame 8, and a skin (not shown) that covers the back frame 8 and the cushion pad to form the surface of the seat back. Mainly composed of
The back frame 8 is provided with a side airbag 8a that inflates when the vehicle receives an impact equal to or more than a collision from the side of the vehicle at a certain speed or more. The side airbag 8a is arranged outside the vehicle. Further, the side airbag 8a is linked with a seating sensor 10 described later, and is set so as not to operate when a person is not sitting on the vehicle seat.

The cushion frame 1 includes a pair of left and right cushion side frames 2 and 3, a back pipe frame 4 connecting the rear ends of the cushion side frames 2 and 3, and a front pipe connecting the front ends of the cushion side frames 2 and 3. It is mainly configured by a frame 5 (that is, a front frame) and a first pan frame 50 and a second pan frame 60 as pressure receiving members that receive a load of an occupant.
The pair of left and right cushion side frames 2 and 3 are connected to the back frame 8 at their rear end portions, so that the rear end portions are curved upward.
The back pipe frame 4 is a pipe material, and connects the rear ends of the pair of left and right cushion side frames 2 and 3 which are curved as described above, and thus is located above the front pipe frame 5.
The front pipe frame 5 is a pipe material, and as shown in FIG. 3, FIG. 9, and FIG. 10, the right end portion 5a is formed to be curved in a crank shape (there are two bent portions).

Below the cushion frame 1, a pair of left and right slide rails 6 and 7 for sliding the cushion frame 1 to arbitrary front and rear positions with respect to the floor of the vehicle based on an operation of an occupant are provided. The left slide rail 6 is attached to the left cushion side frame 2, and the right slide rail 7 is attached to the right cushion side frame 3. It is assumed that the slide rails 6 and 7 are provided with a lock mechanism that locks and unlocks the operations of the slide rails 6 and 7.
Since the slide rails 6 and 7 are provided below the cushion frame 1 in this way, the seat cushion is arranged above the floor panel with a gap therebetween. That is, there is formed a space into which a person's hand/fingers, tools, etc. enter below the seat cushion.
Since the slide rails 6 and 7 are provided on the left and right of the seat cushion, when a hand, a finger, or a tool is inserted into the gap, the slide rails 6 and 7 are mainly inserted from the front or the rear.
Further, in front of the gap, an operation lever L that extends from the lock mechanism and operates the lock mechanism is located.

The above-mentioned cushion pad that constitutes a seat cushion together with the cushion frame 1 is provided on the first pan frame 50 and the second pan frame 60.
In addition, the above-mentioned skin covers the cushion pads from the peripheral edge portions of the first pan frame 50 and the second pan frame 60. In other words, the lower surface of the seat cushion is in a state in which the peripheral portion is covered with the skin and the center side of the peripheral portion is open without being covered, and the side surface and the upper surface of the seat cushion are covered with the skin.
In other words, since the vicinity of the center of the lower surface of the seat cushion is open without the skin being provided, the maintenance work of the cushion frame 1 and devices provided in the cushion frame 1 can be performed from this opening. It is like this.

Hereinafter, detailed configurations of the first pan frame 50 and the second pan frame 60 will be described.
The first pan frame 50 and the second pan frame 60 are pressure receiving members made of a metal plate material that receives a load of an occupant, and the first pan frame 50 and the second pan frame 60 are used in combination. It is formed in a substantially box shape and can accommodate a cushion pad.
Further, the first pan frame 50 and the second pan frame 60 have mounting holes (through holes) into which clip members 20 and 30 for fastening various cables and devices to the first pan frame 50 and the second pan frame 60 are inserted. A plurality of holes are formed.

First, the first pan frame 50 is located on the rear side of the cushion frame 1, and is located below the buttocks of the occupant when seated in a normal driving position.
The first pan frame 50 has a rear end portion 51a attached to the back pipe frame 4 and a front end portion 51b attached to the front pipe frame 5, and is bridged between the back pipe frame 4 and the front pipe frame 5. It is in a state.

The first bread frame 50 has a bottom surface portion 51 that receives a cushion pad.
The bottom surface portion 51 gradually rises as the rear end portion 51a moves rearward, the front end portion 51b gradually rises as it moves forward, and both side end portions 51c located on both sides of the rear end portion 51a face sideward. It is formed so that it gradually rises as it goes. That is, the bottom surface portion 51 of the first pan frame 50 is formed in a shape that easily receives the cushion pad.

The first pan frame 50 has a first rear hook 52a, a second rear hook 52b, and a third rear hook 52c as mounting portions mounted on the back pipe frame 4, and is mounted on the front pipe frame 5. Has a first front hook 53a, a second front hook 53b, and a third front hook 53c.
Each of the hooks 52a to 52c and 53a to 53c is a hook-shaped portion having an inner diameter substantially equal to the diameter of each of the pipe frames 4 and 5.

The first rear hook 52a, the second rear hook 52b, and the third rear hook 52c are integrally formed with the rear end portion 51a of the bottom surface portion 51 and are arranged at equal intervals.
The first rear hook 52a and the third rear hook 52c provided on the left and right are formed in the same shape, and the second rear hook 52b provided at the center is the first and third rear hooks on the left and right. It is formed wider toward the left and right than 52a and 52c.
The first rear hook 52a, the second rear hook 52b, and the third rear hook 52c are attached to the back pipe frame 4 by being hooked on the back pipe frame 4 from above.

The first front hook 53a, the second front hook 53b, and the third front hook 53c are integrally formed with the front end portion 51b of the bottom surface portion 51 and are arranged at equal intervals.
The first front hook 53a and the third front hook 53c provided on the left and right are formed in the same shape, and the second front hook 53b provided in the center is more than the left and right first and third front hooks 53a, 53c. Is also formed wide toward the left and right.
The first front hook 53a, the second front hook 53b, and the third front hook 53c are attached to the front pipe frame 5 by being hooked on the front pipe frame 5 from above.

As described above, in the first bread frame 50, the hooks 52a to 52c and 53a to 53c are hooked on the pipe frames 4 and 5 from above, and most of the cushion pad is received. It is covered.
Therefore, if the hooks 52a to 52c and 53a to 53c come off from the pipe frames 4 and 5 at the time of maintenance work, for example, the hooks 52a to 52c are removed after the skin is peeled off or the cushion pad is removed. , 53a to 53c must be hooked on the pipe frames 4 and 5 again, which is troublesome.
For this reason, the attachment portions of the first pan frame 50 to the pipe frames 4 and 5 (the locations of the hooks 52a to 52c and 53a to 53c) are protected.
Especially, since the lower surface of the seat cushion is in an open state without being covered by the skin on the center side, the locations of the front hooks 53a to 53c attached to the front pipe frame 5 exposed from the opening are important. It is protected.

As shown in FIGS. 1 and 8, a concave portion 50a that is one step lower than the upper surface of the first pan frame 50 is provided in the widthwise central region of the upper surface of the first pan frame 50, and the concave portion 50a is provided. The sensor 10 is arranged in the. It should be noted that openings 50b that communicate the front side and the back side of the first pan frame 50 are formed on both left and right sides of the concave portion 50a.
The sensor 10 is, for example, a seating sensor (also referred to as a position sensor) capable of detecting whether or not an occupant is seated on the seat. That is, the seating sensor 10 is arranged above the first pan frame 50, which is a pressure receiving member, in the central region of the seat cushion in the width direction.

Although the seating sensor 10 may be directly attached to the recessed portion 50a, the seating sensor 10 in this embodiment is fixed to the mounting bracket 11, and the mounting bracket 11 to which the seating sensor 10 is fixed is arranged in the recessed portion 50a. It is like this.
When the occupant sits on the vehicle seat, the occupant's load is applied to the seating sensor 10 via the cushion pad. At that time, if the seating sensor 10 is attached to the recessed portion 50a via the mounting bracket 11, the mounting bracket 11 absorbs a part of the load of the occupant when the seating sensor 10 is applied. The influence of the load of the occupant on the seating sensor 10 is reduced as compared with the case where the occupant is directly attached to the concave portion 50a.

In the case where a so-called S spring frame is adopted as the pressure receiving member instead of the first pan frame 50, although not shown, a bracket member that forms the concave portion 50a is bridged between the S spring frames, and the bracket is formed. It is assumed that the seating sensor 10 is fixed on the member.
Further, when the S spring frame is adopted as the pressure receiving member, this S spring frame is also provided with the above-mentioned hooks 52a to 52c and 53a to 53c at the rear end portion and the front end portion similarly to the first pan frame 50. It is assumed that

As shown in FIGS. 1, 3, 8, and 9, the seating sensor 10 includes a harness 13 (both a wire harness and a cable harness) that electrically connects the seating sensor 10 and a control device 12 (described later). The flat cable 15a formed flat is connected.
The flat cable 15a is a cable integrally connected to a first sub-cable 15 described later, and is passed through one of the openings 50b among the openings 50b formed on both sides of the concave portion 50a, The wiring is provided on the back side (lower side) of the first bread frame 50. In the present embodiment, the flat cable 15a is passed through the opening 50b on the left side.

Subsequently, the second pan frame 60 is located on the front side of the first pan frame 50, and is located below the thighs of the occupant when seated in a normal driving position.
The second pan frame 60 is in a state where the left and right side end portions are attached and bridged to the pair of left and right cushion side frames 2 and 3.
Most of the second pan frame 60 is located in front of the front pipe frame 5.

The second pan frame 60 is integrally formed as a whole, and includes a bottom surface portion 61 that receives a cushion pad, a front end portion 62 that is located in front of the bottom surface portion 61 and forms a front edge of the cushion frame 1, and a bottom surface portion 61. And a pair of left and right cushion side frames 2 and 3 which are located on both the left and right sides of the cushion frame 1 and left and right side end portions 63 and 64 which form left and right side edges of the cushion frame 1.

The bottom surface portion 61 is recessed downward with respect to the front end portion 62 and the left and right side end portions 63, 64, and behind the front end portion 62 and the front hooks hooked on the front pipe frame 5. 53a to 53c are located.
Further, as shown in FIG. 11, a recess 61a having a shape recessed upward is formed on the lower surface of the bottom surface portion 61 of the second bread frame 60. As shown in FIG. 1, the concave portion 61a is recognized as a convex portion when viewed from above.
Further, the concave portion 61a (convex portion) is formed from the left end portion to the right end portion of the bottom surface portion 61. As shown in FIG. 9, a harness 13 to be described later is wired in the recess 61a.

The front end portion 62 and the left and right side end portions 63 and 64 are integrally formed so as to be gently curved, and the rear end portions of the left and right side end portions 63 and 64 are, as shown in FIG. It is located behind 5.
The left and right side end portions 63, 64 are placed so as to cover the front end portions of the pair of left and right cushion side frames 2, 3 from above and are integrally joined.

Then, on the lower surface of the second pan frame 60, the control device 12 that controls the operation of the electrical components mounted on the vehicle seat is provided.
The control device 12 is a so-called ECU (Electric Control Unit) device, and includes, for example, a power supply device, a signal processing device from a seating sensor 10 described later, and electrical components (motors, sensors, etc.) mounted on a vehicle seat. Control the blower).
The control device 12 is provided on the back surface (lower surface) of the cushion frame 1 together with a harness 13 described below, and is also connected to a harness or a cable other than the harness 13.

The control device 12 is formed in a rectangular parallelepiped shape, and includes a main body portion 12a whose upper surface is in contact with the lower surface of the second pan frame 60, and a lid portion 12b which is attached to the main body portion 12a and shields the inside. The main body portion 12a of the control device 12 as described above is arranged and fixed to the lower surface of the second pan frame 60 across the concave portion 61a.
Further, the rear side surface 12c of the control device 12 is arranged so as to be parallel to a straight portion of the front pipe frame 5 excluding the curved right end portion 5a.

To describe the arrangement of the control device 12 in more detail, the control device 12 is arranged on one side (right side) in the left-right direction on the back surface of the second pan frame 60 in the cushion frame 1.
Further, the control device 12 and the third front hook 53c of the first pan frame 50 are arranged adjacent to each other in the front-rear direction. The front side surface of the third front hook 53c and the rear side surface 12c of the control device 12 face each other. That is, the control device 12 is placed in front of the third front hook 53c of the first pan frame 50. The left and right width dimensions of the rear side surface 12c of the controller 12 are set to be longer than the left and right width dimensions of the third front hook 53c.
Further, as shown in FIG. 11, the lower surface of the control device 12 (that is, the surface facing the lower side of the lid portion 12b) is located below the third front hook 53c. The vertical dimension of the rear side surface 12c of the control device 12 is preferably set longer than the vertical dimension of the third front hook 53c.

The curved right end portion 5a of the front pipe frame 5 faces the right side surface of the control device 12. That is, as shown in FIG. 3, FIG. 9, and FIG. 10, the control device 12 is arranged closer to the seat center than the curved right end portion 5 a, and moreover, is located on the rear side of the control device 12 in the front pipe. The right end 5a of the frame 5 is bent once from the rear side to the front side, and is further bent rightward at the tip.

The harness 13 (main cable 14) is connected to the control device 12 as described above.
The harness 13 includes a main cable 14, and a first sub cable 15 and a second sub cable 16 branching from the main cable 14.
Such a harness 13 is arranged on the back side (lower side) of the first pan frame 50 and the second pan frame 60 except for the flat cable 15a.

As shown in FIG. 3, the main cable 14 is connected to the control device 12, and has a branch portion 14 a on the side opposite to the side connected to the control device 12.
The branch portion 14a is arranged at a point separated laterally of the seating sensor 10. The point refers to a peripheral region of a portion of the back surface of the first bread frame 50, which is spaced apart laterally (to the left in the present embodiment) of the concave portion 50a.
Then, the main cable 14 is fixed by the clip member 20 at a point (hereinafter, point P) separated laterally from the seating sensor 10, and the branch portion 14a is also arranged at the point P.

The first sub-cable 15 is a cable that extends by branching from the second sub-cable 16 at the branching portion 14a, and a flat cable 15a connected to the seating sensor 10 is integrated at the end portion on the side closer to the seating sensor 10. And a connector 15b for connecting the one round cable and the other round cable in the middle of the first sub-cable 15.

The second sub-cable 16 is a cable that branches and extends from the first sub-cable 15 at the branch portion 14a, is arranged along the width direction of the seat cushion, and is connected to another cable via a connector.

Further, the clip members 20 and 30 are appropriately used to fix the main cable 14 and the first sub cable 15 of the harness 13 to the first pan frame 50 and the second pan frame 60. Therefore, the first pan frame 50 and the second pan frame 60 are provided with a plurality of mounting holes in which the clip members 20 and 30 are mounted and locked.

The first sub-cable 15 and the second sub-cable 16 that form the harness 13 and other cables are routed in the left-right direction of the second pan frame 60 as shown in FIG. It is arranged on the other side (left) in the left-right direction on the back surface of 50. The cables (various cables including the main cable 14) connected to one side (right side) in the left-right direction are routed so as to be directed to the other side (left).
That is, on the back surface of the second pan frame 60 in the cushion frame 1, the control device 12 is arranged on one side in the left-right direction, and the harness 13 (14 to 16) and other cables (branch portion 14a, etc.) on the other side. (Including) are arranged together. The seating sensor 10 is in a state of being provided between the control device 12 and the harnesses 13 and the like that are collectively arranged. This makes it possible to avoid interference between the control device 12 and the harness 13 or the like.

The seat cushion in the vehicle seat configured as described above is arranged above the floor panel with a gap therebetween, as described above. Further, since slide rails 6 and 7 that support the seat cushion are provided at the left and right ends of the seat cushion, tools used when performing human hands and fingers, maintenance work, etc., are seat cushions. It will be inserted toward the gap from the front or the rear.
Further, the back pipe frame 4 to which the rear end portion 51a of the first pan frame 50 is attached has a state in which the rear end portions of the pair of left and right cushion side frames 2 and 3 are curved upward as described above. And accordingly, it is located above the front pipe frame 5.
Therefore, rather than the mounting portion of the first pan frame 50 to the back pipe frame 4 (rear end portion 51a: each rear hook 52a to 52c), the mounting portion of the first pan frame 50 to the front pipe frame 5 (front end portion 51b: each). The front hooks 53a to 53c) are more likely to be touched by human hands/fingers or tools.

Based on such a state, at least one front hook (the third front hook 53c in the present embodiment is selected from the first front hook 53a, the second front hook 53b, and the third front hook 53c hooked on the front pipe frame 5. ) Is arranged in front of the control unit 12. As a result, even if the occupant's hands or fingers are inserted from the front into the gap formed between the seat cushion and the floor panel, or a tool is inserted during maintenance, the attachment site (third part) to be protected It comes into contact with the control device 12 before the front hook 53c).
In the present embodiment, the control device 12 is arranged in front of the third front hook 53c on the right side in consideration of the arrangement of various cables connected to the seating sensor 10, but the first front hook on the left side is arranged. It may be arranged in front of 53a or the second front hook 53b in the middle.

According to the present embodiment, the mounting portion (third front side hook 53c) of the first pan frame 50 to the front pipe frame 5 is a protection target, and the mounting portion 53c and the control device 12 are arranged adjacent to each other in the front-rear direction. Since the control device 12 serves as a barrier against the hands/fingers and objects that have entered through the gap, and makes it difficult to access the attachment site (third front hook 53c) that is the object of protection, the lower surface of the seat cushion Even if the entire surface is not covered with the epidermis, it becomes easy to protect the part to be protected (the third front side hook 53c). As a result, it is possible to suppress the occurrence of a situation in which the first pan frame 50 comes off the front pipe frame 5.

In addition, since the lower surface of the control device 12 is located below the third front hook 53c, which is the attachment site, the control device 12 easily becomes a barrier against the hand/fingers or objects that have entered through the gap, and is protected. It becomes more difficult to access the third front hook 53c, which is the attachment site of.
That is, the hands/fingers and tools that have entered through the gap cannot contact the third front hook 53c on the rear side unless they pass through the control device 12 projecting downward.

Further, since the curved right end 5a of the front pipe frame 5 faces the side surface of the control device 12, the curved right end 5a allows access to the third front hook 53c, which is the attachment site of the protection target. Will be more difficult.

Further, since the control device 12 is disposed closer to the seat center side than the curved right end portion, for example, the hands and fingers of the occupant are laterally placed in the gap formed between the seat cushion and the floor panel. Even if it is inserted or a tool is inserted during maintenance, the curved right end portion makes it more difficult to access the third front hook 53c that is the attachment portion to be protected.

Further, since the front side surface of the third front side hook 53c which is the mounting portion and the rear side surface 12c of the control device 12 face each other, the control device 12 causes the front side surface of the third front side hook 53c which is the mounting portion to be protected. Access to it becomes difficult.

Further, since the control device 12 is arranged and fixed to the lower surface of the second pan frame 60 across the recess 61a, the rigidity of the second pan frame 60 can be improved by the recess 61a. Since the control device 12 can be provided in the portion where the height is improved, the fixed state of the control device 12 with respect to the second pan frame 60 can be made stable and strong.

The seat cushion includes a cushion frame 1, a cushion pad provided on the upper surfaces of the first pan frame 50 and the second pan frame 60 in the cushion frame 1, and peripheral portions of the first pan frame 50 and the second pan frame 60. And the outer skin covering the cushion pad, the outer skin covers the cushion pad from the peripheral portions of the first pan frame 50 and the second pan frame 60, and does not cover the entire lower surface of the seat cushion. Maintenance work of the control device 12 is easy to perform.

Since the vehicle seat according to the present invention enables the harness of the seating sensor to be efficiently routed, it has high industrial applicability.

1 Cushion Frame 2 Cushion Side Frame 3 Cushion Side Frame 4 Connecting Pipe Frame 5 Front Pipe Frame 5a Right End 50 First Pan Frame 50a Concave 50b Opening 51 Bottom 51a Rear End 51b Front End 51c Side End 52a First Rear hook 52b Second rear hook 52c Third rear hook 53a First front hook 53b Second front hook 53c Third front hook 60 Second pan frame 61 Bottom portion 61a Recess 62 Front end 63 Left end 64 Right end Part 6 Slide rail 7 Slide rail 8 Back frame 10 Seating sensor 11 Mounting bracket 12 External device (control device)
12a Main body part 12b Lid part 12c Rear side surface 13 Harness 14 Main cable 14a Branch part 15 First sub cable 15a Flat cable 15b Connector 15c First bending part 15d Second bending part 15e Third bending part 16 Second sub cable 20 First Clip member 21 Locking part 21a Base part 21b Locking piece 22 Holding part 22a Holding part main body 22b Band 22c Retaining hole 23 Supporting part 30 Second clip member 31 Locking part 32 Engaging part 33 Supporting part P Point F1 First fixing Point F2 Second fixed point L Control lever

Claims (10)

1. A cushion frame that forms a skeleton of a seat cushion that supports a person's thighs and buttocks, a cushion pad provided on the cushion frame, and a seating sensor disposed below the cushion pad are provided. A vehicle seat,
   The cushion frame has a pressure receiving member that receives a load of an occupant,
   The seating sensor is connected to at least a harness arranged between the seating sensor and a point separated laterally of the seating sensor,
   A portion of the harness between the sidewardly spaced point and the seating sensor is fixed to the pressure receiving member at a first fixing point that is arranged adjacent to the seating sensor on one side in the front-rear direction. The vehicle seat is characterized by
2. The seating sensor is arranged above the pressure receiving member in the widthwise central region of the seat cushion,
   The vehicle seat according to claim 1, wherein the harness is disposed below the pressure receiving member.
3. The seating sensor is disposed on the left or right side with respect to the widthwise center portion of the seat cushion,
   3. The vehicle seat according to claim 1, wherein the harness is fixed to the seating sensor side with respect to the pressure receiving member.
4. The harness is fixed to the first fixing point in a state of being bent in a direction approaching the seat sensor after extending so as to be separated from the seat sensor in a width direction of the seat cushion. The vehicle seat according to any one of items 1 to 3.
5. The harness is fixed to the first fixing point in a state of being bent inward in the width direction of the seat cushion, after being extended so as to be separated from the seating sensor to the outside in the width direction of the seat cushion. The vehicle seat according to claim 4.
6. The vehicle seat according to any one of claims 1 to 5, wherein the harness is fixed to the first fixing point in a state of being bent so as to be vertically overlapped.
7. The harness is fixed to the first fixing point in a state of being vertically overlapped by a clip member,
   7. The vehicle seat according to claim 6, wherein the clip member is arranged so that the harness can be extended in the width direction of the seat cushion.
8. There is a second fixing point on the width direction outer side of the seat cushion with respect to the first fixing point,
   There is a point spaced apart laterally outside the seat cushion in the width direction of the second fixed point,
   The vehicle seat according to any one of claims 1 to 7, wherein the harness is fixed at the second fixing point so as to extend toward a point that is separated laterally. ..
9. The harness is fixed to the second fixing point by a clip member,
   9. The vehicle seat according to claim 8, wherein the clip member is arranged so as to extend in a direction toward a point where the harness is separated laterally.
10. The harness is fixed to the first fixing point and the second fixing point by a clip member,
    10. The extension direction of the harness by the clip member at the first fixing point and the extension direction of the harness by the clip member at the second fixing point are directions intersecting with each other. The vehicle seat described in.

Images