WO2019194125A1 - Structure for arranging sensor on seat and vehicle seat - Google Patents

Abstract

Provided are: a structure for arranging a sensor on a seat capable of accurately detecting that a passenger is seated and capable of improving passenger sitting comfort; and a vehicle seat. In the structure for arranging a sensor 1 on a seat 10 comprising a cushion pad 12 and an attachment member 18 provided on the underside of the cushion pad 12: the sensor 1 is arranged on the upper surface 18A of the attachment member 18 and is arranged so as to protrude further upwards than the upper surface 18A of the attachment member 18; and protruding sections 20 are provided on the upper surface 18A of the attachment member 18, adjacent to the sensor 1 and being at least as high as the upper end of the sensor 1.

Description

Sensor arrangement structure on the seat and vehicle seat

The present invention relates to a sensor arrangement structure on a seat and a vehicle seat.

A sensor such as a pressure sensor that detects whether or not an occupant is seated on a vehicle seat may be disposed on the seat (see Patent Document 1).
Such a sensor can be used to detect that a passenger is seated in a seat in a technology such as a seat belt reminder that issues a warning when a seat belt is not worn even though the passenger is seated in the seat. Can be used to detect.

Japanese Unexamined Patent Publication No. 2014-1000094

By the way, conventionally, when such a sensor is disposed on a seat, for example, as described in Patent Document 1, there is a case where the sensor is disposed between a cushion pad and an outer skin of a seat cushion of the seat.
However, when the sensor is placed between the cushion pad and the epidermis, that is, just below the epidermis, something hits the occupant's buttocks and thighs seated on the seat through the epidermis of the seat. May be felt and the seating feeling may deteriorate.

In addition, when the sensor is arranged just under the skin of the sheet, there is a problem that the arrangement of the sensor is easily restricted by the position of the hanging groove and the like.
On the other hand, when placing the sensor on the seat, it goes without saying that the sensor is required to accurately detect that the occupant is seated on the seat.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to accurately detect that an occupant is seated on a seat and to improve the seating feeling of the occupant, and to provide a sensor arrangement structure on the seat and a vehicle. The purpose is to provide a sheet for use.

In order to solve the above problems, the invention described in claim 1
In the arrangement structure of the sensor on the seat comprising a cushion pad and an attachment member provided on the lower side of the cushion pad,
The sensor is disposed on the upper surface of the mounting member, and is disposed so as to protrude upward from the upper surface of the mounting member.
A protrusion having a height equal to or higher than the upper end of the sensor is provided on the upper surface of the attachment member adjacent to the sensor.

The invention according to claim 2 is the arrangement structure of the sensor on the sheet according to claim 1,
The protrusion has an inclined surface that increases in height as it approaches the sensor.

The invention according to claim 3 is the arrangement structure of the sensor on the sheet according to claim 1,
The protrusion is provided so as to surround the sensor.

According to a fourth aspect of the present invention, in the arrangement structure of the sensor on the seat according to the first aspect,
The sensor is arranged in a recess provided in the attachment member.

The invention according to claim 5 is the arrangement structure of the sensor on the sheet according to claim 1,
A relief portion corresponding to the shape of the sensor and the protruding portion is formed on the lower surface of the cushion pad.

The invention according to claim 6 is the arrangement structure of the sensor on the sheet according to claim 1,
A contact adjusting portion for adjusting a contact state between the cushion pad and the sensor is provided at a position facing the sensor on a lower surface of the cushion pad.

The invention according to claim 7 is the arrangement structure of the sensor on the sheet according to claim 6,
The contact adjusting portion is a convex portion protruding in a direction from the position on the lower surface of the cushion pad toward the sensor.

The invention according to claim 8 is the arrangement structure of the sensor on the sheet according to claim 1,
The attachment member is provided with a linear member,
The protrusion is arranged at a position overlapping the linear member.

The invention according to claim 9 is the arrangement structure of the sensor on the sheet according to claim 1,
The mounting member is provided with a plurality of linear members extending in the front-rear direction, arranged side by side in the left-right direction,
The sensor is arranged between the linear members.

The invention according to claim 10 is a vehicle seat comprising the sensor arrangement structure on the seat according to any one of claims 1 to 9,
It has a seat frame in which the cushion pad and the attachment member are arranged, and a skin arranged on the cushion pad.

According to the first and tenth aspects of the present invention, it is possible to form a state in which the sensor and the cushion pad are reliably in contact with each other. When the cushion pad is bent downward, the lower surface of the cushion pad reliably presses the sensor. Therefore, when the occupant is seated on the seat, it is possible to accurately detect that the occupant is seated on the seat with the sensor.
Further, the sensor is disposed on the lower surface side of the cushion pad, and the sensor does not hit the occupant's buttocks or thighs seated on the seat through the skin of the seat. Therefore, it is possible to improve the seating feeling of the occupant.

According to the inventions of claims 2 to 5, it is possible to further improve the seating feeling of the occupant when the occupant is seated on the seat.

According to the inventions described in claims 6 and 7, it is possible to improve the detection sensitivity of the sensor.

According to the eighth aspect of the present invention, it becomes possible to improve the fixability (hardness to come off) of the linear member to the mounting member.

According to the ninth aspect of the present invention, it becomes easy to place the sensor on the mounting member and to form the protruding portion.

It is a perspective view showing a sheet. It is a perspective view showing the structure of the cushion pad of a seat cushion. It is a perspective view showing the sensor etc. which are arrange | positioned at a seat frame or a pan frame. It is a perspective view showing the example of composition of a sensor. It is a perspective view which expands and represents the protrusion part, recessed part, attachment part, etc. which were provided in the pan frame. It is a perspective view which expands and represents the state in which the sensor was attached to the attaching part. FIG. 7 is a partial cross-sectional view taken along line XX in FIG. 6. It is a figure showing another structural example, such as a protrusion part and an attaching part. It is a fragmentary sectional view showing the state where the sensor is arranged on the lower surface side of the cushion pad. It is a figure explaining the state which the lower surface of a pan frame and a floor interfere when not providing a protrusion part. It is a figure explaining the state which the lower surface of a pan frame and a floor do not interfere in the case of this embodiment which provides a protrusion part. It is a perspective view showing the example which comprised so that a protrusion part might surround a sensor over a perimeter. It is a perspective view showing the example comprised so that a some protrusion part may surround the circumference | surroundings of a sensor. It is a fragmentary sectional view showing the escape part etc. which were formed in the lower surface of a cushion pad. It is a fragmentary sectional view showing the escape part etc. which were formed in the lower surface of a cushion pad. It is a fragmentary sectional view showing the example of composition of a contact adjustment part. It is a fragmentary sectional view showing the example of composition of a contact adjustment part. It is a figure showing the example of arrangement | positioning which has arrange | positioned the sensor between the wires. It is a figure showing the example of arrangement | positioning etc. which have arrange | positioned the sensor above the wire. It is a perspective view showing the structure of the sensor which concerns on 2nd Embodiment. It is an enlarged view of the attachment part of the connector part to the sensor which concerns on 2nd Embodiment. It is a top view showing the recessed part, the attachment part, etc. which were provided in the pan frame. It is a top view showing the attaching part etc. to which the sensor was attached. FIG. 20 is a partial cross-sectional view taken along line YY of FIG. FIG. 20 is a partial cross-sectional view taken along the line ZZ in FIG. 19. It is a fragmentary sectional view showing the state where the sensor is arranged on the lower surface side of the cushion pad. It is a perspective view showing the structure of the modification of a sensor. It is an enlarged view showing the modification of the 2nd positioning part of an attaching part. FIG. 24 is a partial cross-sectional view taken along line ZZ of FIG. 19 when the sensor of FIG. 23 is attached to the attachment portion. It is a fragmentary sectional view showing the state where the sensor is arranged in the position just under the hollow part formed in the cushion pad. It is a fragmentary sectional view showing the state which provided the recessed part in the part of the lower surface of the cushion pad above a sensor.

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

[First Embodiment]
[Sheet structure]
A seat 10 shown in FIG. 1 is a vehicle seat provided in a vehicle such as an automobile, and is used by a vehicle occupant. In the following, the case where the seat 10 is mainly a passenger seat will be described. However, the seat 10 is not limited to this case, and the rear seat of the two-row seat, the second row or the third row of the three-row seat. It may be a seat other than the passenger seat such as an eye seat.

As shown in FIG. 1, a seat 10 is provided on a seat cushion 11 that supports the occupant's buttocks and thighs, a seat back 14 that has a lower end supported by the seat cushion 11 and serves as a backrest, and a seat back 14. And a headrest 16 that supports the head of the occupant. In addition, you may provide auxiliary support parts, such as a necklace, an armrest, a footrest, and an ottoman.

As shown in FIG. 2, the seat cushion 11 includes a seat frame 17 (see FIG. 3 described later) serving as a skeleton, a cushion pad 12 provided on the seat frame 17, and a seat frame 17 disposed on the cushion pad 12. And a skin 13 (not shown in FIG. 2; see FIG. 1) that covers the cushion pad 12 and constitutes the surface of the seat.

Although not shown, the seat back 14 (see FIG. 1) of the seat 10 is also provided with a cushion pad, and the seat back 14 is a seat cushion frame 17 serving as a skeleton (not shown in FIG. 3 described later). And a cushion pad provided on the occupant side of the seat frame 17, and a skin 15 (see FIG. 1) that covers the seat frame 17 and the cushion pad to form the surface of the seat.

In the present embodiment, the seat cushion 11 is provided with a ventilation path 50 for air (warm air or cold air) between the cushion pad 12 and the skin 13. However, in the present invention, the ventilation path 50 or the like is not necessarily provided. It does not have to be done.
In the present embodiment, as shown in FIG. 2, the cushion pad 12 is provided with a vent passage recess 50 </ b> A that forms a part of the vent passage 50. Further, a concave portion (not shown) that forms the remaining portion of the air passage 50 is provided at a position of the cover member 12A corresponding to the air passage concave portion 50A, and the cover member 12A is provided with a predetermined portion of the cushion pad 12. The ventilation path 50 is formed by being fitted in.

A plurality of punching holes are formed in the cover member 12 </ b> A, and these punching holes serve as the air blowing port 50 </ b> C of the ventilation path 50. The cushion pad 12 including the cover member 12A is covered with a skin 13 that is at least a portion corresponding to the air outlet 50C. The skin 13 is thus disposed on the cushion pad 12.
And the air sent from the blower (illustration omitted) is sent in the ventilation path 50 through the through-hole 50B, and the air which distribute | circulated the ventilation path 50 is blown out from the ventilation opening 50C of the ventilation path 50 toward the passenger | crew. It has become so.

As shown in FIG. 3, a seat frame (also referred to as a cushion frame) 17 is provided below the cushion pad 12 of the seat cushion 11.
The seat frame 17 includes a pair of left and right side frames 17A and a connecting member 17B that connects the front end portion and the rear end portion of each side frame 17A (the connecting member 17B on the front end side is disposed below the pan frame 18). And a pan frame 18 installed between the side frames 17A and the connecting members 17B.

In the present embodiment, in this way, the plate-like pan frame 18 is arranged as an attachment member on the seat frame 17, and the cushion pad 17 is arranged on the attachment member 18 or the like.
The sensor 1 is disposed on the upper surface 18A of the pan frame 18. The pan frame 18 may be made of iron or resin, and the material is not particularly limited.

In the present embodiment, as shown in FIG. 3, the pan frame 18 is arranged so that a wire 19 made of iron or the like as a linear member extends in the front-rear direction at a central portion in the left-right direction. .
The pan frame 18 is reinforced by a wire 19. In this embodiment, the wire 19 is embedded in the pan frame 18 and integrally formed.

In addition, the wire 19 may be provided in positions other than the center of the pan frame 18 in the left-right direction, and a plurality of wires 19 may be provided. In that case, each wire 19 is provided so that it may extend in the front-back direction similarly to the center wire 19, for example, and it is provided so that it may be arranged in parallel in the left-right direction.
Moreover, the wire 19 does not necessarily need to be linear (see FIG. 3 and the like), and may be a crank shape (for example, see FIGS. 15 and 16 described later), a curved shape, or the like.

[Example of sensor configuration]
Next, a configuration example of the sensor 1 will be described. FIG. 4 is a perspective view illustrating a configuration example of the sensor 1.
As shown in FIG. 4, the sensor 1 is configured as, for example, a pressure sensor, and is configured by a push switch in which a contactor, a coil spring, and the like (not shown) are built in the cover 2 and the case 3. The cover 2 of the sensor 1 is movable up and down with respect to the case 3. The sensor 1 detects the pressure when the cover 2 is pressed by the cushion pad 12 as will be described later, and the occupant detects the seat. 10 is detected.

Further, the sensor 1 has a connector portion 4 to which a harness or the like (not shown) for electrically connecting the sensor 1 and an external device (not shown; a power supply device, a signal processing device for the sensor 1 or the like) is connected. Is provided.
Moreover, in this embodiment, the sensor 1 is attached to the attachment part 22 and arrange | positioned in the sheet | seat 10 so that it may mention later. The sensor 1 protrudes outward from the side surface of the lower case 3 as an engagement structure that can be engaged with an engagement hole 23 (see FIG. 5 described later) provided in the mounting portion 22. Convex part (claw part) 5 is provided.

4 shows a case where the sensor 1 is a circular sensor, the sensor 1 may be rectangular, and the shape of the sensor 1 is not particularly limited.
Further, in the present embodiment, a case will be described in which one convex portion 5 is provided at each position symmetrical with respect to the center of the sensor (two in total), but even one convex portion 5 is provided. Alternatively, three or more may be provided. Moreover, it is also possible to comprise so that the convex part 5 can be moved in and out while being urged outward.

[Configuration of protrusions, etc.]
Next, the structure etc. of the protrusion part 20 provided in the pan frame 18, the recessed part 21, and the attaching part 22 are demonstrated. FIG. 5 is an enlarged perspective view showing the concave portion 21 and the attachment portion 22 provided in the pan frame 18, and FIG. 6 is an enlarged perspective view showing a state where the sensor 1 is attached to the attachment portion 22. It is.
As shown in FIGS. 5 and 6, the upper surface 18 </ b> A of the pan frame 18 is provided with a protrusion 20 that protrudes upward, and a recess 21 is provided between the front and rear protrusions 20, 20. Yes. And the recessed part 21 is provided in the left-right symmetric position so that it may straddle the left and right of the wire 19 arrange | positioned in the center of the pan frame 18. FIG.

The recess 21 is provided with two attachment portions 22 to which the sensor 1 can be attached. In the present embodiment, the attachment portions 22 are formed so that the left and right portions of the wire 19 of the recess 21 are further recessed in a substantially circular shape downward. And in this embodiment, the sensor 1 is arrange | positioned at the recessed part 21 by attaching to the attaching part 22 provided in the recessed part 21. FIG.
In the present embodiment, the sensor 1 is attached to any of the attachment portions 22. In the following, the case where the mounting portion 22 is provided at two locations in the recess 21 as described above will be described, but only one mounting portion 22 may be provided, or three or more locations. It may be provided. In the following, a case where only one sensor 1 is arranged will be described, but a plurality of sensors 1 may be arranged.

In front and rear portions of the attachment portion 22, engagement holes 23 are provided as engagement structures that can engage with the convex portions 5 of the sensor 1 described above. The engaging structure may be a bottomed recess or groove instead of the hole 23, and is not limited to the hole 23 as long as the structure can be engaged with the engaging structure of the sensor 1. Further, the engaging structure on the sensor 1 side is not limited to the convex portion 5 as long as it can be engaged with the engaging structure of the mounting portion 22.
In the present embodiment, the rib 24 is provided so as to extend in the left-right direction so as to straddle the wire 19.

In the present embodiment, when the sensor 1 is attached to one of the attachment portions 22 provided as described above (for example, the left attachment portion 22), as shown in FIG. The part 5 and the edge part of the hole 23 for engagement provided in the part before and behind the attaching part 22 engage.
That is, when the sensor 1 is pushed into the mounting portion 22 from above, the edge portion of the hole 23 of the mounting portion 22 is slightly pushed back and forth at the tapered portion of the convex portion 5 of the sensor 1, and then the sensor 1. The convex portion 5 is fitted into the hole 23 of the attachment portion 22 and is engaged with the edge portion of the hole 23.

When the sensor 1 is attached to the attachment portion 22, the rib 24 comes into contact with the side of the sensor 1 (in this case, the right side) as shown in FIG.
Thus, in the present embodiment, the sensor 1 attached to the attachment portion 22 has the sensor 1 with respect to the attachment portion 22 by engaging the convex portion 5 with the edge portion of the hole 23 of the attachment portion 22. Is prevented from moving in the vertical direction and the front-rear direction, and is attached by engagement of the convex portion 5 of the sensor 1 with the edge portion of the hole 23 of the attachment portion 22 and the contact of the rib 24 from the side. The sensor 1 is prevented from moving in the left-right direction with respect to the portion 22.
In the present embodiment, the sensor 1 can be attached to the attachment portion 22 in a state where the sensor 1 is accurately positioned in the attachment portion 22 in this way.

In this embodiment, as shown in FIG. 6 and FIG. 7, the sensor 1 is disposed on the upper surface 18 </ b> A of the pan frame 18, but at this time, the sensor 1 protrudes above the upper surface 18 </ b> A of the pan frame 18. Are arranged to be.
That is, although the upper surface 18A of the pan frame 18 is not necessarily flat and may be uneven, a reference plane that follows the upper surface 18A of the pan frame 18 around the mounting portion 22 of the sensor 1 (see the alternate long and short dash line in FIG. 7). Is considered, the sensor 1 is disposed so as to protrude above the plane.

The upper surface 18A of the pan frame 18 is provided with the above-described projecting portion 20 projecting upward, adjacent to the sensor 1, and the projecting portion 20 is higher than the upper end of the sensor 1 (the pan frame 18). (Height from the upper surface 18A).
That is, the protrusion 20 may be provided so that the upper end thereof and the upper surface of the cover 2 of the sensor 1 are flush with each other as shown in FIG. (See, for example, FIG. 8 described later).

Further, in the present embodiment, the protruding portion 20 is configured to have an inclined surface 20 </ b> A whose height increases as it approaches the sensor 1, and is provided so as to surround the sensor 1.
In FIG. 7 and the like, the case where the concave portion 21 and the mounting portion 22 are provided at a position lower than the upper surface 18A of the pan frame 18 is shown, but such a configuration is not necessarily required. For example, FIG. As shown, it is also possible to provide the mounting portion 22 at the same height as the upper surface 18A of the pan frame 18 (or a position higher than the upper surface 18A) without providing the recess 21 in the pan frame 18.

Further, in FIG. 7 and the like, the case where the projecting portion 20 is provided with the inclined surface 20A is shown, but for example, as shown in FIG. 8, the projecting portion 20 may be configured not to be provided with the inclined surface 20A.
Further, in FIG. 7 and the like, the case where the protruding portion 20 is formed integrally with the pan frame 18 as an attachment member (that is, as a part of the pan frame 18) is shown. For example, as shown in FIG. Can be configured to be mounted on the upper surface 18A of the pan frame 18.
Any case described above (see FIG. 8) is also included in the present invention.

On the other hand, in this embodiment, as shown in FIG. 3, an opening 18 </ b> B is provided in the pan frame 18. The opening 18B is formed, for example, as a through hole through which the duct 51 or the like through which the air fed into the ventilation path 50 (see FIG. 2) passes through the cushion pad 12 described above.
And in this embodiment, this opening part 18B is provided in the position adjacent to the attaching part 22, as shown in FIG.5 and FIG.6. If comprised in this way, when the sensor 1 is attached to the attaching part 22 as shown in FIG. 6, the connector part 4 of the sensor 1 will be in the state which protrudes in the opening part 18B. Therefore, a harness or the like (not shown) connected to the connector unit 4 can be easily routed to the lower side of the pan frame 18 through the opening 18B.

[Action]
In the present embodiment, as described above, the sensor 1 is disposed on the upper surface 18A of the pan frame 18 that is an attachment member provided on the lower side of the cushion pad 12 of the seat cushion 11, as shown in FIG. The pan frame 18 is disposed so as to protrude above the upper surface 18A.
A protrusion 20 having a height equal to or higher than the upper end of the sensor 1 is provided on the upper surface 18A of the pan frame 18 adjacent to the sensor 1.

Therefore, it is possible to form a state in which the upper end of the sensor 1 and the lower surface 12B of the cushion pad 12 are in contact with each other, and the lower surface 12B of the cushion pad 12 reliably presses the sensor 1 when the cushion pad 12 is bent downward. To do.
Therefore, when the occupant is seated on the seat 10, the sensor 1 is pressed by the lower surface 12 </ b> B of the cushion pad 12 that is bent downward, and therefore the sensor 1 accurately detects that the occupant is seated on the seat 10. Is possible.

Further, in the present embodiment, since the sensor 1 is arranged on the lower surface 12B side of the cushion pad 12, the sensor 1 hits the occupant's buttocks and thighs seated on the seat 10 via the skin 13 of the seat 10. There is no.
When the sensor is disposed between the cushion pad 12 of the seat cushion 11 and the outer skin 13 (that is, immediately below the outer skin 13) as in the conventional case described above, the occupant's buttocks and thighs seated on the seat 10 are disposed. Although it may be felt that something is hitting through the skin 13 of the seat 10 and the seating feeling may be deteriorated, in this embodiment, such a feeling does not occur. It is possible to improve the seating feeling.

Further, depending on the vehicle, the pan frame 18 of the seat 10 and the vehicle floor below the seat 10 may be close to each other.
In such a case, for example, as shown in FIG. 10, when the recess 21 is provided in the pan frame 18 without providing the protruding portion 20 and the sensor 1 is attached to the attachment portion 22 provided there, the sensor 1 seems to be thick. In such a case, the concave portion 21 and the mounting portion 22 may protrude downward, and the lower surface 18C of the pan frame 18 and the floor F may interfere (for example, contact).

However, if the protrusion 20 is provided on the upper surface 18A of the pan frame 18 as in the present embodiment shown in FIG. 11, the position of the mounting portion 22 can be made higher than in the case shown in FIG. That is, by forming the protruding portion 20, the sensor 1, the attachment portion 22, etc. can be lifted as a whole.
Therefore, even when the sensor 1 is thick, it is possible to reduce the downward protrusion of the mounting portion 22 (or, for example, if it is configured as shown in FIG. 8, it protrudes downward. It is possible to prevent the bottom surface 18C of the pan frame 18 and the floor F from interfering with each other.

[effect]
As described above, according to the arrangement structure of the sensor 1 on the seat 10 and the vehicle seat 10 according to the present embodiment, the sensor 1 can accurately detect that an occupant is seated on the seat 10. It becomes possible to improve the seating feeling of the occupant.
Further, since the projecting portion 20 is provided, the sensor 1 and the mounting portion 22 can be lifted as a whole, and even if the sensor 1 is thick, the lower surface 18C of the pan frame 18 and the floor F interfere with each other. It is possible to accurately prevent this.

[Configurations for improving seating feeling, etc.]
When the protrusion 20 is provided on the pan frame 18, if the protrusion 20 has an angle α as shown in FIG. 8, when the occupant is seated, the angle α of the protrusion 20 is set via the cushion pad 12. It may be felt by the occupant's buttocks and thighs, and the occupant may feel uncomfortable or feel something, and the seating feeling may deteriorate.
However, as shown in FIGS. 5 to 7 and the like, if the projecting portion 20 is provided with the inclined surface 20A (that is, if the angle α is not provided), the cushion pad 12 is attached to the seated occupant. Accordingly, the angle α of the protruding portion 20 is not perceived, and it is possible to accurately prevent the occupant from feeling uncomfortable and the seating feeling from being deteriorated.

Further, for example, when only one protrusion 20 is provided at a position adjacent to the sensor 1, the protrusion 20 pushes up the cushion pad 12 from below, and the protrusion 20 is inserted into the seated passenger via the cushion pad 12. There is a possibility that the passenger will feel that there is something (or something), and the occupant may feel uncomfortable or have a poor seating feeling.
However, as shown in FIG. 6 and the like, if the projecting portion 20 is provided so as to surround the sensor 1, the cushion pad 12 is not pushed up by only one place by the projecting portion 20, but is pushed up in a wide range. It becomes a state. Therefore, it is possible to prevent the seated occupant from feeling the protruding portion 20 (or to feel that there is something) and to accurately prevent the occupant from feeling uncomfortable or worsening the seating feeling. Become.

6 and the like show the case where the protrusion 20 is configured to surround the front and rear of the sensor 1, for example, as shown in FIG. 12A, the protrusion 20 extends over the entire circumference of the sensor 1. It can also be configured to surround. Further, for example, as shown in FIG. 12B, a plurality of protrusions 20 may be configured to surround the sensor 1.
Further, the shape of the protruding portion 20 is a shape having an inclined surface 20A as shown in FIGS. 5 to 7, 12A, and 12B, or a rectangular cross-sectional shape as shown in FIG. The shape is not limited to the above, and other various shapes may be used as long as they are adjacent to the sensor 1 and have a height equal to or higher than the upper end of the sensor 1.

Further, as shown in FIG. 8, the sensor 1 can be configured to be attached to the upper surface 18A of the pan frame 18 without providing the recess 21 in the pan frame 18, but in this case, for example, the sensor 1 has a thickness. If it exists, the height of the protrusion part 20 must also be made high.
When the sensor 1 and the projecting portion 20 protrude upward from the pan frame 18 in this way, when the occupant is seated, they are felt by the occupant's buttocks and thighs via the cushion pad 12. The passenger may feel uncomfortable or feel something, and the seating feeling may worsen.

However, if the pan frame 18 is provided with the recess 21 and the sensor 1 is disposed therein as in the present embodiment shown in FIGS. 6 and 7, etc., the sensor 1 and the projecting portion 20 are connected to the pan frame 18. The amount (height) protruding upward from the height can be reduced by the amount of the recess 21.
Therefore, even if the sensor 1 is thick, it is possible to suppress the amount of protrusion (height) of the sensor 1 and the protruding portion 20 from the pan frame 18 upward, and when the occupant is seated, In addition, the sensor 1 and the protruding portion 20 are not felt through the cushion pad 12, and it is possible to accurately prevent the occupant from feeling uncomfortable or worsening the seating feeling.

Further, when the protrusion 20 as shown in FIGS. 5 to 7 or 8 is provided on the upper surface 18A of the pan frame 18, for example, as shown in FIGS. 13A and 13B, the lower surface 12B of the cushion pad 12 It is also possible to configure so as to form an escape portion 12C corresponding to the shape of the sensor 1 or the protruding portion 20.
With this configuration, even when the amount of protrusion (height) of the sensor 1 or the protrusion 20 upward from the pan frame 18 can be increased as described above (see FIG. 13A), the protrusion 20 has an angle α. Even in some cases (see FIG. 13B), the sensor 1 and the protrusion 20 are fitted into the relief portion 12 </ b> C formed on the cushion pad 12.

Therefore, there is no difference between the pressure that pushes up the cushion pad 12 when the occupant is seated and the cushion pad 12 that is bent downward is supported by the pan frame 18, and the pressure that the protrusion 20 and its angle α push up the cushion pad 12. . That is, since the protrusion 20 and the corner α thereof are fitted into the escape portion 12C, these portions do not push the cushion pad 12 more strongly than the pan frame 18 or the like.
Therefore, if the relief portion 12C is formed as described above, the occupant will not feel the protruding portion 20 or its angle α via the cushion pad 12, and the occupant will feel uncomfortable or have a seating feeling. It becomes possible to accurately prevent the deterioration.

[Configuration for improving sensor sensitivity]
On the other hand, in order to improve the sensitivity when detecting that the occupant is seated on the seat 10 by the sensor 1, for example, a position facing the sensor 1 on the lower surface 12B of the cushion pad 12 (FIG. 9, FIG. 13A, FIG. 13B). 12D) can be provided with a contact adjusting portion 25 for adjusting the contact state between the cushion pad 12 and the sensor 1.
Specifically, for example, as illustrated in FIG. 14A, the contact adjustment unit 25 is provided as a convex portion protruding in a direction from the position 12D facing the sensor 1 to the sensor 1 on the lower surface 12B of the cushion pad 12. Is possible.

If comprised in this way, compared with the case where the contact adjustment part 25 (in this case convex part 25) is not provided, a contact state is adjusted so that the sensor 1 and the lower surface 12B of the cushion pad 12 may contact more strongly. Is possible. When the occupant is seated and the cushion pad 12 bends downward, the pressure applied to the sensor 1 from the cushion pad 12 is increased by the amount of the contact adjustment unit 25. In addition, the sensor 1 is more reliably pressed by the cushion pad 12. Therefore, it is possible to further improve the sensitivity when the sensor 1 detects that the occupant is seated on the seat 10.

Further, instead of forming the contact adjusting portion 25 as a convex portion as described above, for example, as shown in FIG. 14B, another member 25 (hereinafter referred to as a contact adjusting member 25) is provided at a position 12D facing the sensor 1 of the cushion pad 12. The contact adjusting member 25 is interposed between the cushion pad 12 and the sensor 1 to adjust the thickness, hardness, etc. of the contact adjusting member 25, etc. It is also possible to configure so that the contact state with 1 is adjusted.
In FIG. 14A and FIG. 14B, illustration of the protrusion part 20, the pan frame 18, etc. is omitted. Further, the projecting portion 20 may be configured as shown in FIGS. 5 to 7, 8 or the like, or may be formed in other shapes.

Further, for example, when the sensor 1 is of a type that detects that an occupant is seated on the seat 10 due to friction with the cushion pad 12, the position 12D of the cushion pad 12 facing the sensor 1, the convex portion, or for contact adjustment By configuring so as to increase the frictional resistance of the contact adjusting unit 25 such as a member, it is possible to adjust the contact state between the cushion pad 12 and the sensor 1.

[About the arrangement of protrusions and sensors]
Incidentally, in the present embodiment, for example, as shown in FIGS. 5 to 7, the protruding portion 20 is disposed at a position overlapping the wire 19 as a linear member provided in the pan frame 18. That is, the wire 19 is configured to be embedded in the protruding portion 20.
Since the protrusion 20 is provided so as to protrude upward from the pan frame 18, the thickness of the pan frame 18 is increased in the portion where the protrusion 20 is provided compared to the portion where the protrusion 20 is not formed. Yes. And since the wire 19 is embedded and arrange | positioned in the part (namely, part of the protrusion part 20) where the pan frame 18 is thick like this, the pan frame 18 (attachment member) of the wire 19 (linear member) ) Can be improved (hardness to come off).

On the other hand, for example, if the sensor 1 is arranged on the upper side of the wire 19, it is difficult to stably attach the sensor 1. Therefore, in this embodiment, as shown in FIG. The left and right positions of 19 are provided with attachment portions 22 so that the sensor 1 is attached.
As described above, when the sensor 1 is arranged on the upper surface 18A of the pan frame 18, it is desirable that the sensor 1 be arranged so as to avoid the wires 19, for example, the pan frame 18 is provided with a plurality of wires 19. If so, it is desirable to place the sensor 1 between them. If comprised in this way, it will become easy to arrange | position the sensor 1 to the pan frame 18, and it will become easy to form the protrusion part 20. FIG.

Specifically, for example, as shown in FIG. 15, when a plurality of wires 19 are juxtaposed in the left-right direction and embedded in the pan frame 18 so as to extend in the front-rear direction, for example, the sensor 1 May be arranged at a position where the distance between the wires 19 is wide (see the sensor 1A), or may be arranged at a position where the distance between the wires 19 is narrow (see the sensor 1B).
Further, unlike the sensors 1A and 1B, the sensor 1 does not necessarily have to be arranged at the center position of the pan frame 18. For example, the right position of the pan frame 18 (see sensor 1C) or the left position (see sensor 1D). ). It is also possible to arrange a plurality of sensors 1 (see sensors 1C and 1D, for example).

Note that the above configuration is not limited to the case where four wires 19 are arranged on the pan frame 18; for example, when three wires 19 are arranged on the pan frame 18 as shown in FIG. The same applies to the configuration of. The above configuration is the same not only when the wire 19 has a crank shape as shown in FIGS. 15 and 16, but also with a straight shape (see FIG. 3), a curved shape, and the like.
In addition, as shown in FIG. 16, when the sensor 1 can be stably attached even if it is disposed on the upper side of the wire 19, the sensor 1 is disposed on the wire 19 and the present invention is applied. It is also possible to do.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
Provided is a sensor arrangement structure on a seat and a vehicle seat that can accurately detect that an occupant is seated on the seat and can improve the seating feeling of the occupant even if configured as follows. It becomes possible.

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

The configuration of the sensor 1 according to the second embodiment will be described. FIG. 17A is a perspective view illustrating the configuration of the sensor 1 according to the second embodiment, and FIG. 17B is an enlarged view of a portion where the connector portion 4 is attached to the sensor 1 according to the second embodiment.
As shown in FIGS. 17A and 17B, the sensor 1 includes a push switch in which a contact, a coil spring, and the like (not shown) are incorporated in a cover 2 and a case 3.

The sensor 1 can press the cover 2 in a direction toward the case 3 (up and down direction in the figure). The direction in which the cover 2 of the sensor 1 is pressed against the case 3 (the vertical direction in the figure) is hereinafter referred to as the push direction of the sensor 1.
The sensor 1 detects the pressure when the cover 2 is pressed by the cushion pad 12 of the seat cushion 11 or the cushion pad of the seat back 14 as will be described later, and detects that the occupant is seated on the seat 10. It is like that.

Further, the sensor 1 has a connector portion 4 to which a harness or the like (not shown) for electrically connecting the sensor 1 and an external device (not shown; a power supply device, a signal processing device for the sensor 1 or the like) is connected. Is provided.
Moreover, in this embodiment, the sensor 1 is attached to the attachment part 22 and arrange | positioned in the sheet | seat 10 so that it may mention later. The sensor 1 includes a first regulated portion 5 that can be engaged with a first regulating portion 30, a second regulating portion 34, a first positioning portion 35, and a second positioning portion 36 of the mounting portion 22, which will be described later, 2 to-be-regulated portion 6, first to-be-positioned portion 7 (see FIG. 17B), and second to-be-positioned portion 8 are provided.
The first regulated part 5 of the sensor 1 corresponds to the convex part (claw part) 5 of the first embodiment. The first regulated portion 5 etc. of the sensor 1 will be described together with the explanation of the first regulated portion 30 etc. of the mounting portion 22.
17A and 17B show the case where the sensor 1 is a circular sensor, the sensor 1 may be rectangular or the like, and the shape of the sensor 1 is not particularly limited.

Next, the configuration of the mounting portion 22 of the sensor 1 will be described in detail.
Below, as shown in FIG. 3, the case where the attachment part 22 of the sensor 1 is provided in the pan frame 18 is demonstrated. That is, the mounting member provided with the mounting portion 22 is the pan frame 18, and the mounting portion 22 of the sensor 1 is opposite to the side of the cushion pad 12 of the seat cushion 11 that contacts the occupant seated on the seat (that is, the cushion). The case where it is provided on the lower side of the pad 12 will be described.

Therefore, in the following description, it is assumed that the attachment portion 22 of the sensor 1 is provided on the lower side of the cushion pad 12 of the seat cushion 11, but the attachment portion 22 of the sensor 1 is referred to as the seat back 14 (see FIG. 1). ) Of the cushion pad on the side opposite to the side in contact with the occupant seated on the seat (that is, the back side of the cushion pad of the seat back 14).
And also when comprised in that way, it can be demonstrated similarly to the following description, and the case is also contained in this invention. In this case, the push direction of the sensor 1 described above is substantially the front-rear direction.

In the present embodiment, as shown in FIG. 3, the recess 21 is provided on the upper surface of the pan frame 18.
The concave portion 21 is provided with two attachment portions 22 to which the sensor 1 can be attached. In the present embodiment, the sensor 1 can be attached to any of the attachment portions 22.

In the following, the case where the mounting portion 22 is provided at two locations in the recess 21 as described above will be described, but only one mounting portion 22 may be provided, or three or more locations. It may be provided.
Moreover, below, although the case where only one sensor 1 is arrange | positioned as mentioned above is demonstrated, two or more may be arrange | positioned.

FIG. 18 is a plan view showing the concave portion 21 and the attachment portion 22 provided in the pan frame 18, and FIG. 19 is a plan view showing the attachment portion 22 and the like to which the sensor 1 is attached.
The attachment portion 22 can be attached by sliding the sensor 1 in a direction (in this case, the left-right direction) perpendicular to the push direction of the sensor 1 (in this case, the up-down direction).
This will be specifically described below. Hereinafter, the direction in which the sensor 1 is slid (in this case, the left-right direction) may be referred to as the sliding direction of the sensor 1.

The recess 21 is provided so as to straddle the left and right of the wire 19 disposed in the center of the pan frame 18 and is formed to be lower than the upper surface of the pan frame 18. And the attachment part 22 of the sensor 1 is each formed so that the part on either side of the wire 19 of the recessed part 21 may be further depressed below.

As shown in FIG. 17A, the sensor 1 has a convex portion 5 as the first regulated portion 5. And the 1st control part 30 which engages with the 1st to-be-controlled part 5 (convex part 5) of the sensor 1 when the sensor 1 is attached to the attachment part 22 is provided in the part before and behind the attachment part 22. As shown in FIG. ing.
Then, the first restricted portion 5 (convex portion 5) of the sensor 1 and the first restricting portion 30 of the attachment portion 22 are engaged, whereby the direction from the attachment portion 22 of the sensor 1 toward the cushion pad 12 (that is, this) In this case, the upward movement is restricted.

Specifically, when the sensor 1 is attached to the attachment portion 22, from the left-right direction (that is, from the left direction when attached to the left attachment portion 22, and from the right direction when attached to the right attachment portion 22). It is attached to the attachment portion 22 so as to slide.
And the 1st control part 30 of the attachment part 22 is provided so that it may protrude in the direction which goes to the sensor 1 attached to the attachment part 22, and the 1st to-be-regulated part 5 (convex part) of the sensor 1 slid. 5) In order not to collide, the left and right ends of the first restricting portion 30 (that is, at least the left end of the left first restricting portion 30 and the right end of the right first restricting portion 30) are open in the left-right direction. .

When the sensor 1 is attached to the attachment portion 22, as shown in FIG. 20, the first restriction portion 30 of the attachment portion 22 is positioned above the convex portion 5 that is the first restricted portion 5 of the sensor 1. And engages with the first restricted portion 5 (the convex portion 5).
As described above, in the present embodiment, the first regulated portion 5 (convex portion 5) of the sensor 1 attached to the attachment portion 22 and the first restriction portion 30 of the attachment portion 22 are engaged with each other. The movement in the direction from the mounting portion 22 toward the cushion pad 12 (that is, upward in this case) is restricted, and the sensor 1 is prevented from coming off from the mounting portion 22 to the cushion pad 12 side. It has become so.

Further, as shown in FIG. 17A, the sensor 1 is formed with a second regulated portion 6 including a key claw-like claw portion 6. And the hole 31 is provided in the bottom face of the attachment part 22 in the part close | similar to the wire 19. FIG.
In this embodiment, two slits 32 are formed in parallel from the hole 31 in the left-right direction toward the center of the mounting portion 22, and the hole 31 and the two slits 32 form the mounting portion 22. A tongue-like portion 33 is formed on the bottom surface.

In other words, a tongue-like portion 33 extending in the direction (left-right direction) from the central portion of the bottom surface to the wire 19 is formed on the bottom surface of the attachment portion 22.
In the present embodiment, the tongue portion 33 of the attachment portion 22 is formed integrally with the pan frame 18. Therefore, the tongue 33 is made of the same material (iron, resin, etc.) as the pan frame 18 and has rigidity, but can swing up and down when force is applied.

The tip 34 of the tongue 33, that is, the edge 34 of the hole 31 is used as the second restricting portion 34 of the attachment portion 22, and when the sensor 1 is attached to the attachment portion 22, The tongue-like portion 33 of the mounting portion 22 is pushed down by the claw portion 6 which is the restricting portion 6 and swings downward.
When the sensor 1 is attached to the attachment portion 22, the tongue-like portion 33 of the attachment portion 22 jumps up, and the claw portion 6 of the sensor 1 and the tip portion 34 of the tongue-like portion 33 of the attachment portion 22 are engaged.

In this way, as shown in FIG. 21, the claw portion 6 that is the second restricted portion 6 of the sensor 1 and the second restricting portion 34 (the distal end portion 34 of the tongue-like portion 33, that is, the hole 31). The edge portion 34) engages.
In this embodiment, the second restricted portion 6 (claw portion 6) of the sensor 1 and the second restricting portion 34 of the attachment portion 22 are thus engaged, so that the sliding direction (left and right) of the sensor 1 is achieved. The movement of the sensor 1 in the direction) is restricted, and the sensor 1 is prevented from coming off from the mounting portion 22 in the sliding direction.

In the present embodiment, as described above, the attachment portion 22 engages with the first regulated portion 5 (convex portion 5) of the sensor 1 attached to the attachment portion 22, and from the attachment portion 22 of the sensor 1. The first restricting portion 30 that restricts movement in the cushion pad direction (in this case, the vertical direction) and the second restricted portion 6 (claw portion 6) of the sensor 1 attached to the attachment portion 22 are engaged. And a second restricting portion 34 that restricts the movement of the sensor 1 in the sliding direction (in this case, the left-right direction).
Then, as shown in FIG. 18 and the like, the second restricting portion 34 is located behind the first restricting portion 30 in the traveling direction of the sensor when the sensor 1 is slid and attached to the attaching portion 22 (that is, the attachment on the left side). The portion 22 is provided on the right side, and the right attachment portion 22 is provided on the left side.

As described above, the second restricting portion 34 of the attachment portion 22 only needs to be able to engage with the second restricted portion 6 (claw portion 6) of the sensor 1. Therefore, the 2nd control part 34 does not necessarily need to be the edge part of the hole 31, for example, may be a recessed part (bottomed groove | channel etc.) and the edge part of a notch part.
Further, as described above, instead of forming the tongue-shaped portion 33 that can swing in the vertical direction on the mounting portion 22, for example, the claw portion 6 of the second restricted portion 6 of the sensor 1 is biased downward. It is also possible to configure so that the operation can be performed in the state.

On the other hand, as shown in FIG. 17B, the first positioned portion 7 is formed on the lower surface side of the sensor 1. In the present embodiment, a part of the lower end portion of the connector portion 4 is formed so as to protrude in a direction toward the circular center of the case 3 at the portion where the sensor portion 1 of the connector portion 4 is attached to the case 3. The convex portion 7 is the first positioned portion 7.
As shown in FIG. 18, the bottom surface of the attachment portion 22 is notched to form a notch portion 35, and the notch portion 35 is a first positioning portion 35.

Then, when the sensor 1 is attached to the attachment portion 22, as shown in FIG. 21, the notched portion 35 that is the first positioning portion 35 of the attachment portion 22 has a convex portion that is the first positioned portion 7 of the sensor 1. By fitting 7, the first positioning portion 35 and the first positioned portion 7 are engaged.
In this way, the first positioning portion 7 of the sensor 1 attached to the attachment portion 22 and the first positioning portion 35 of the attachment portion 22 engage with each other, so that the attachment portion 22 slides the sensor 1. The direction orthogonal to the direction (left-right direction) and the direction toward the cushion pad 12 (up-down direction), that is, in this case, movement of the sensor 1 in the front-rear direction is restricted, so that the sensor 1 can be positioned in the front-rear direction. It has become.

As described above, the first positioning portion 35 of the attachment portion 22 only needs to be able to engage with the first positioned portion 7 (convex portion 7) of the sensor 1.
Therefore, the first positioning portion 35 is not necessarily the cutout portion 35, and may be, for example, a concave portion (a bottomed groove or the like) or a hole.

Further, as shown in FIG. 17A, the sensor 1 has a convex portion 8 that is the second positioned portion 8 on the upper side of the second regulated portion 6 (claw portion 6).
And as shown in FIG. 18, the edge part of the rib 24 provided in the attachment part 22 so that the wire 19 may be straddled is notched, and the notch part 36 is formed, This notch part 36 is the 1st. 2 It is set as the positioning part 36.

Then, when the sensor 1 is attached to the attachment portion 22, as shown in FIG. 21, the notched portion 36 that is the second positioning portion 36 of the attachment portion 22 has a convex portion that is the second positioned portion 8 of the sensor 1. When the 8 is fitted, the second positioning portion 36 and the second positioned portion 8 are engaged.
In this way, the second positioning portion 8 of the sensor 1 attached to the attachment portion 22 and the second positioning portion 36 of the attachment portion 22 are engaged with each other, so that the attachment portion 22 is the first portion described above. As in the case of the positioned portion 7 and the first positioning portion 35, the movement of the sensor 1 in the front-rear direction is restricted, and the sensor 1 can be positioned in the front-rear direction.

In the present embodiment, the second positioning portion 36 is provided behind the first positioning portion 35 in the traveling direction of the sensor 1 when the sensor 1 is slid and attached to the attachment portion 22.
In this case as well, the second positioning portion 36 of the attachment portion 22 only needs to be able to engage with the second positioned portion 8 (convex portion 8) of the sensor 1, and thus the second positioning portion 36 is sufficient. May not necessarily be the notch 36, but may be, for example, a recess (such as a bottomed groove) or a hole.

In this embodiment, since it is comprised as mentioned above, when the sensor 1 is slid and attached to the attachment part 22, as shown in FIG. 20, the 1st to-be-regulated part 5 (convex part 5) of the sensor 1 is shown. The first restricting portion 30 of the mounting portion 22 is located on the upper side of the mounting portion 22 and is engaged, and the upward movement of the sensor 1 is restricted.
Then, by further pushing the sensor 1 in the sliding direction, as shown in FIG. 21, the second restricted portion 6 (claw portion 6) of the sensor 1 and the second restricted portion 34 of the mounting portion 22 are engaged. Thus, the movement of the sensor 1 in the sliding direction (left-right direction) is restricted, and the first positioned portion 7, the second positioned portion 8 of the sensor 1, the first positioning portion 35 of the mounting portion 22, and the second positioning. The movement of the sensor 1 in the front-rear direction is restricted by the respective engagement with the part 36.

In the present embodiment, the sensor 1 is mounted in the state of being accurately positioned in the mounting portion 22 and arranged in the seat 10 in this manner.
The sensor 1 can be easily attached to the attachment portion 22 because the sensor 1 is accurately positioned and attached as described above simply by sliding the sensor 1 onto the attachment portion 22. Further, if the second restricted portion 6 (claw portion 6) of the sensor 1 is removed from the second restricting portion 34 of the attachment portion 22, the sensor 1 can be easily detached from the attachment portion 22.
Note that FIG. 19 shows the case where the sensor 1 is attached to the left attachment portion 22 of the two attachment portions 22 provided in the recess 21, but the sensor 1 is attached to the right attachment portion 22, It is also possible to attach the sensor 1 to the attachment portion 22.

On the other hand, in the present embodiment, as shown in FIG. 22, the sensor 1 is located on the lower surface 12B side of the cushion pad 12 of the seat cushion 11, and when the occupant sits on the seat 10, the lower surface 12B of the cushion pad 12 is provided. Is disposed at a position where it is pressed against a push switch as the sensor 1.
The sensor 1 detects the pressure when pressed by the cushion pad 12 of the seat cushion 11 and detects that the occupant is seated on the seat 10. Note that the symbol β described in FIG. 22 and the like will be described later.

Thus, in the present embodiment, since the sensor 1 (push switch) is disposed on the lower surface 12B side of the cushion pad 12, the occupant's buttocks and thighs seated on the seat 10 are interposed via the skin 13 of the seat 10. Sensor 1 will not hit.
When the sensor is disposed between the cushion pad 12 of the seat cushion 11 and the outer skin 13 (that is, immediately below the outer skin 13) as in the conventional case described above, the occupant's buttocks and thighs seated on the seat 10 are disposed. Although it may be felt that something is hitting through the skin 13 of the seat 10 and the seating feeling may be deteriorated, in this embodiment, such a feeling does not occur. It is possible to improve the seating feeling.

In the present embodiment, since the sensor 1 is disposed at the position on the lower surface 12B side of the cushion pad 12 of the seat cushion 11 as shown in FIG. 22, when the occupant sits on the seat 10, the lower surface 12B of the cushion pad 12 The sensor 1 comes to be pressed down accurately. Therefore, it is possible to accurately detect that the occupant is seated on the seat 10 with the sensor 1.

As described above, according to the arrangement structure of the sensor 1 on the seat 10 and the vehicle seat 10 according to the present embodiment, the sensor 1 can accurately detect that an occupant is seated on the seat 10. It becomes possible to improve the seating feeling of the occupant.

When the sensor 1 is a push switch as in the present invention, for example, if the sensor 1 is attached to the attachment portion 22 by pushing the cover 2 (see FIG. 17A) of the sensor 1 from above, the cover 2 May move with respect to the case 3, it may be difficult to determine whether the case 3 of the sensor 1 is attached to the attachment portion 22.
In that case, since the cover 2 of the sensor 1 is pushed back by the coil spring built in the case 3, the workability of the attachment work of the sensor 1 to the attachment portion 22 may be deteriorated.

However, according to the arrangement structure of the sensor 1 on the seat 10 and the vehicle seat 10 according to this embodiment, the sensor 1 is attached to the attachment portion 22 by sliding in the left-right direction as described above.
Therefore, it is possible to easily and accurately attach the sensor 1 to the attachment portion 22 without causing the above problems.

In the above embodiment, the second positioned portion 8 of the sensor 1 is provided as the convex portion 8 formed on the upper side of the second regulated portion 6 (claw portion 6) as shown in FIG. 17A. However, as shown in FIG. 23, for example, a convex portion 9 is formed at the tip of the second regulated portion 6 (claw portion 6) (that is, the end surface in the sliding direction), and the convex portion 9 is formed with the second positioned portion 9. It is also possible to configure so as to.
In this case, for example, as shown in FIG. 24A, a concave portion 37 is formed in the lower portion of the rib 24 of the attachment portion 22, and this concave portion 37 is used as the second positioning portion 37.

If comprised in this way, when attaching the sensor 1 to the attachment part 22, as shown to FIG. 24B, the nail | claw part 6 which is the 2nd controlled part 6 of the sensor 1, and the 2nd control part 34 of the attachment part 22 will be shown. While engaging, the convex part 9 which is the 2nd positioning part 9 of the sensor 1 fits into the recessed part 37 which is the 2nd positioning part 37 of the attachment part 22, and the 2nd positioning part 37 and the 2nd to-be-positioned part 9 engages.
Therefore, even if comprised in this way, the 2nd to-be-positioned part 9 of the sensor 1 attached to the attachment part 22 and the 2nd positioning part 37 of the attachment part 22 engage reliably, and the sensor 1's front-back direction The movement is restricted, so that the sensor 1 can be reliably positioned in the front-rear direction.

By the way, for example, as shown in FIG. 25, in the cushion pad 12 above the sensor 1, a hollow portion such as the air (hot air or cold air) ventilation path 50 (see FIG. 2) described above is provided. When an occupant sits on the seat 10, the cushion pad 12 on the upper side of the hollow portion bends downward to absorb the load, and the load is less likely to be transmitted to the lower portion of the hollow portion. Therefore, it is difficult for the load to be transmitted to the sensor 1 and it may be difficult to detect that the occupant is seated on the seat 10 with the sensor 1.
Therefore, it is desirable that the sensor 1 be provided at a position other than the position directly below the hollow portion such as the air passage 50 formed in the cushion pad 12.

Further, when the occupant is seated on the seat 10, the load is more reliably transmitted to the sensor 1 via the cushion pad 12 (that is, the cushion pad 12 is provided with the cover 2 of the sensor 1 (see FIG. 17A)). For example, the portion β (see FIG. 22) of the lower surface 12B of the cushion pad 12 above the sensor 1 is configured to be harder than the other portions of the cushion pad 12. Is possible.
Although not shown, it is also possible to provide a convex portion protruding toward the lower sensor 1 in the portion β.

On the other hand, when a baggage such as a bag is placed on the seat 10, it can be configured not to erroneously detect that a passenger is seated.
Luggage such as bags is usually lighter than passengers. Therefore, the cushion pad 12 is less bent when a baggage such as a bag is placed on the seat 10 than when the occupant is seated on the seat 10.

Therefore, for example, as shown in FIG. 26, it is also possible to provide a recess 12E in the portion β of the lower surface 12B of the cushion pad 12 above the sensor 1.
With this configuration, when a bag or other luggage is placed on the seat 10, the cushion pad 12 is less bent and the cushion pad 12 does not touch the sensor 1 or the cover 2 of the sensor 1 is pressed. The pressure is weak. Therefore, if comprised as mentioned above, the detection operation | movement by the sensor 1 will not be performed but it can prevent misdetecting that the passenger | crew sat down.

Further, when configured as described above, when the occupant sits on the seat 10, the cushion pad 12 is greatly bent, and the upper surface γ of the recess 12C touches the sensor 1 to push down the cover 2 of the sensor 1. Therefore, when the occupant is seated on the seat 10, it can be accurately detected by the sensor.
Even when configured as described above, the upper surface γ of the concave portion 12C is hardened, or a convex portion protruding downward (that is, toward the sensor 1) is provided on the upper surface γ of the concave portion 12C. It is also possible to configure so that it can be reliably detected when seated on the seat 10.

Incidentally, as shown in FIG. 2, the seat 10 of the present embodiment is provided with an air passage 50 in the cushion pad 12 of the seat cushion 11, and as shown in FIG. The air sent through the duct 51 from the blower (not shown) provided in the air is sent into the ventilation path 50 through the through hole 50B.
Therefore, in this embodiment, as shown in FIGS. 3 and 22, the pan frame 18 is provided with an opening 18 </ b> B that is a through hole for passing the duct 51 and the like.

Also, since the blower is usually provided on either the left or right side of the seat 10, the position where the duct 51 penetrates the pan frame 18 is also shifted to the left or to the right from the center according to the position of the blower. Therefore, in the seat 10 of the present embodiment, the opening 18B through which the duct 51 can pass is formed on the left side of the pan frame 18 as shown in FIGS. There are two places, one on the right side. An opening 18B may be further provided.

And in this embodiment, as shown in FIG. 19 etc., the opening part 18B is each provided in the left and right of the recessed part 21 following the recessed part 21 of the pan frame 18 in which the attaching part 22 was provided. That is, the opening 18 </ b> B is provided immediately next to the mounting portion 22.
Therefore, when the sensor 1 is attached to the attachment portion 22, as shown in FIG. 19, the connector portion 4 of the sensor 1 protrudes into the opening 18B, and a harness or the like (not shown) connected to the connector portion 4 is connected. Thus, it can be easily drawn to the lower side of the pan frame 18 through the opening 18B.

In addition, if there is a distance between the attachment portion 22 and the opening 18B, a harness attached to the connector portion 4 of the sensor 1 attached to the attachment portion 22 is connected to the pan frame 18 until the opening 18B. In this state, the harness and the pan frame 18 and the cushion pad 12 may rub against each other and the harness and the like may be damaged or disconnected.
However, as described above, if the opening 18B is provided continuously to the concave portion 21 of the pan frame 18 provided with the mounting portion 22, the above-described rubbing is unlikely to occur, Disconnection is less likely to occur.

As shown in FIGS. 3 and 22, the duct 51 is inserted into any one of the plurality of openings 18B. Therefore, for example, if the sensor 1 is attached to the attachment portion 22 on the opening 18B side where the duct 51 is not inserted, the duct 51 is inserted through the harness connected to the connector portion 4 of the sensor 1. The opening 18B that is not present can be passed.
Therefore, if comprised in this way, a harness etc. and the duct 51 do not interfere, and since a harness etc. and the duct 51 do not rub against each other, it becomes difficult to produce damage, a disconnection, etc. of a harness etc. It is also possible to configure the harness or the like so as to be inserted through the opening 18B through which the duct 51 is inserted.

Moreover, if comprised as mentioned above, it is not necessary to newly provide the opening part 18B for letting the harness etc. which are connected to the connector part 4 of the sensor 1 pass in the pan frame 18, and it is the opening for inserting the duct 51 There is also an advantage that a harness connected to the connector portion 4 of the sensor 1 can be passed by utilizing the opening 18B already formed in the pan frame 18 such as the portion 18B.

As described above, in this embodiment,
<1> In the arrangement structure of the sensor on the seat having the cushion pad,
The sensor is a push switch,
The sensor mounting portion is provided on the side of the cushion pad opposite to the side that contacts the occupant seated on the seat,
The attachment portion can be attached by sliding the sensor in a direction orthogonal to the push direction of the sensor.

<2> In the sensor arrangement structure on the seat according to <1>, the attachment portion engages with a first regulated portion of the sensor attached to the attachment portion, and the attachment portion of the sensor A first restricting portion for restricting movement in a direction from the head toward the cushion pad is provided.

<3> In the sensor arrangement structure on the seat according to <2>, the first restriction portion of the attachment portion protrudes in a direction toward the sensor attached to the attachment portion, and the sensor When attached to the attaching portion, the first restricting portion is located on the upper side of the convex portion which is the first restricted portion of the sensor and engages with the first restricted portion.

<4> In the sensor arrangement structure on the seat according to any one of <1> to <3>, the attachment portion is engaged with a second restricted portion of the sensor attached to the attachment portion. And a second restricting portion for restricting movement of the sensor in the sliding direction.

<5> In the sensor arrangement structure according to <4>, the second restricting portion of the attachment portion is an edge portion of a recess, a hole, or a notch portion provided in the attachment portion, When the sensor is attached to the attachment portion, the claw portion that is the second restricted portion of the sensor, the second restricted portion, and the second restricted portion are engaged with the second restricted portion. It is characterized by.

<6> In the sensor arrangement structure on the sheet according to any one of <1> to <5>,
The mounting portion is
A first restricting portion that engages with a first restricted portion of the sensor attached to the attaching portion and restricts movement of the sensor from the attaching portion toward the cushion pad;
A second restricting portion that engages with a second restricted portion of the sensor attached to the attaching portion and restricts movement of the sensor in the sliding direction;
With
The second restricting portion is provided on the far side in the traveling direction of the sensor when the sensor is slid and attached to the attaching portion, rather than the first restricting portion.

<7> In the sensor arrangement structure on the seat according to any one of <1> to <6>, the attachment portion is engaged with a first positioned portion of the sensor attached to the attachment portion. And a first positioning portion that performs positioning in a direction perpendicular to the sliding direction of the sensor and the direction toward the cushion pad.

<8> In the sensor arrangement structure on the seat according to <7>, the first positioning portion of the attachment portion is a concave portion, a hole, or a notch portion provided in the attachment portion, and the sensor is When attached to the attachment portion, the first positioning portion and the first positioned portion are engaged with each other by fitting the convex portion which is the first positioned portion of the sensor into the first positioning portion. Features.

<9> In the arrangement structure of the sensor on the sheet according to <7> or <8>,
The attachment portion engages with a second positioned portion of the sensor attached to the attachment portion, and performs positioning in a direction orthogonal to the sliding direction of the sensor and the direction toward the cushion pad. With
The second positioning portion is provided on the far side in the traveling direction of the sensor when the sensor is slid and attached to the attachment portion with respect to the first positioning portion.

<10> A vehicle seat provided with the sensor arrangement structure on the seat according to any one of <1> to <9>,
An attachment member provided with the attachment portion, a seat frame on which the cushion pad is arranged, and a skin arranged on the cushion pad.

According to the inventions described in <1> and <10>, it is possible to accurately detect that the occupant is seated on the seat by the sensor, and it is possible to improve the occupant's seating feeling. .
Also, if the sensor is a push switch, it will be difficult to tell whether the sensor is attached to the mounting part, or the sensor cover will be pushed back by a coil spring with a built-in sensor work. However, in the present invention, the sensor is mounted on the mounting portion by sliding it in a direction perpendicular to the push direction of the sensor. Therefore, the sensor can be easily and accurately caused without such a problem. Can be attached to the attachment portion.

According to the invention described in <2>, since the first restricted portion of the sensor attached to the attachment portion and the first restriction portion of the attachment portion are engaged, the sensor in the direction from the attachment portion toward the cushion pad Movement of the sensor is restricted, and the sensor can be accurately prevented from coming off from the mounting portion toward the cushion pad.

According to the invention described in <3>, the first restriction portion of the attachment portion that protrudes in the direction toward the sensor attached to the attachment portion is located above the convex portion that is the first restricted portion of the sensor. Since it engages with the first restricted portion, movement of the sensor in the direction from the attachment portion toward the cushion pad is reliably restricted, and it is possible to accurately prevent the sensor from coming out of the attachment portion toward the cushion pad. In addition, it can be realized with a simple configuration.

According to the invention described in <4>, since the second restricted portion of the sensor attached to the attachment portion and the second restriction portion of the attachment portion are engaged, movement of the sensor in the sliding direction is restricted, It is possible to accurately prevent the sensor from coming off from the mounting portion in the sliding direction.

According to the invention described in <5>, the second restriction portion of the attachment portion that is a portion of the edge of the recess or hole provided in the attachment portion or the notch portion, and the claw portion that is the second restricted portion of the sensor Since the sensor is engaged, the movement of the sensor in the sliding direction is surely restricted, and it is possible to accurately prevent the sensor from slipping out of the mounting portion in the sliding direction, and realize it with a simple configuration. It becomes possible.

According to the invention described in <6>, since the second restricting portion of the attachment portion is provided on the back side in the traveling direction of the sensor with respect to the first restricting portion, only by sliding the sensor with respect to the attachment portion, After the first restricting portion of the attaching portion and the first restricted portion of the sensor are engaged, the second restricting portion of the attaching portion and the second restricted portion of the sensor are engaged. For this reason, the attachment work of the sensor to the attachment portion is very easy to work.

According to the invention described in <7>, since the first positioned portion of the sensor attached to the attachment portion and the first positioning portion of the attachment portion engage with each other, the sliding direction of the sensor and the attachment portion to the cushion pad The movement of the sensor in the direction orthogonal to the direction in which it heads is restricted, and the sensor 1 can be accurately positioned in the direction.

According to the invention described in <8>, the first positioning portion of the mounting portion that is a recess, a hole, or a notch portion provided in the mounting portion and the convex portion that is the first positioned portion of the sensor are engaged. Therefore, the movement of the sensor in the direction perpendicular to the sliding direction of the sensor and the direction from the mounting portion toward the cushion pad is reliably restricted, and the positioning of the sensor 1 in the direction can be accurately performed. Can be realized with a simple configuration.

According to the invention described in <9>, since the second positioning portion of the mounting portion is provided on the back side in the traveling direction of the sensor with respect to the first positioning portion, only by sliding the sensor with respect to the mounting portion, The first positioning portion of the mounting portion and the first positioned portion of the sensor are engaged, and the second positioning portion of the mounting portion and the second positioned portion of the sensor are engaged. For this reason, the attachment work of the sensor to the attachment portion is very easy to work.

Needless to say, the present invention is not limited to the above-described embodiment and the like, and can be appropriately changed without departing from the gist of the present invention.

The present invention can be used for vehicle seats and the like.

1 Sensor 10 Seat (Seat, Vehicle Seat)
12 Cushion pad 12B Lower surface 12C Escape portion 12D Position facing the sensor 13 Skin 17 Seat frame 18 Pan frame (attachment member)
18A Upper surface 19 Wire (Linear member)
20 Protruding part 20A Inclined surface 21 Concave part 25 Contact adjusting part, convex part, contact adjusting member (contact adjusting part)

Claims (10)

1. In the arrangement structure of the sensor on the seat comprising a cushion pad and an attachment member provided on the lower side of the cushion pad,
   The sensor is disposed on the upper surface of the mounting member, and is disposed so as to protrude upward from the upper surface of the mounting member.
   An arrangement structure of the sensor on the sheet, wherein a protrusion having a height equal to or higher than the upper end of the sensor is provided on the upper surface of the attachment member adjacent to the sensor.
2. 2. The structure for arranging a sensor on a seat according to claim 1, wherein the protrusion has an inclined surface whose height increases as the sensor approaches the sensor.
3. 2. The arrangement structure of the sensor on the seat according to claim 1, wherein the protruding portion is provided so as to surround the sensor.
4. 2. The arrangement structure of the sensor on the seat according to claim 1, wherein the sensor is arranged in a recess provided in the attachment member.
5. 2. The sensor arrangement structure according to claim 1, wherein a relief portion corresponding to a shape of the sensor and the protruding portion is formed on a lower surface of the cushion pad.
6. The contact adjustment part for adjusting the contact state of the said cushion pad and the said sensor is provided in the position facing the said sensor among the lower surfaces of the said cushion pad, The Claim 1 characterized by the above-mentioned. Sensor arrangement structure on the seat.
7. The arrangement structure of the sensor on the seat according to claim 6, wherein the contact adjusting portion is a convex portion protruding in a direction from the position on the lower surface of the cushion pad toward the sensor.
8. The attachment member is provided with a linear member,
   The arrangement structure of the sensor on the sheet according to claim 1, wherein the protruding portion is arranged at a position overlapping the linear member.
9. The mounting member is provided with a plurality of linear members extending in the front-rear direction, arranged side by side in the left-right direction,
   2. The sensor arrangement structure according to claim 1, wherein the sensor is arranged between the linear members.
10. A vehicle seat provided with a sensor arrangement structure on a seat according to any one of claims 1 to 9,
    A vehicle seat, comprising: a seat frame in which the cushion pad and the attachment member are disposed; and a skin disposed on the cushion pad.

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