JP2022125263A - Structure for arranging sensor on seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure, for arranging a sensor on a seat, which enables a sensor such as a position sensor to be arranged on a seat so as to enhance comfortable feeling of a passenger when the same sits in the seat.

SOLUTION: A structure for arranging a sensor 1 on a seat 10 has: a cushion pad 12; and a plate-like member 18 or 25 arranged below the cushion pad 12. The plate-like member 18 or 25 has a concave section 20 or 26 on a surface thereof. The sensor 1 is arranged in the concave section 20 or 26.

SELECTED DRAWING: Figure 10

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to an arrangement structure of sensors on a seat.

A sensor such as a position sensor that detects whether or not an occupant is seated on the seat may be arranged on the seat (see Patent Document 1).
Such sensors detect when an occupant is in the seat, for example in seat belt reminder technology that warns if the occupant is seated but not wearing a seat belt. used to

JP 2014-100941 A

By the way, conventionally, when such a sensor is arranged in a seat, there is a case where it is arranged between a cushion pad and an outer skin of a seat cushion of the seat, as described in Patent Document 1, for example.
However, when the sensor is placed between the cushion pad and the skin, i.e., just below the skin, the buttocks and thighs of the occupant seated on the seat are not hit by anything through the skin of the seat. is felt, and the seating feeling may deteriorate.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure for arranging a sensor on a seat that can improve the seating feeling of a passenger when the sensor is arranged on the seat. do.

In order to solve the above problems, the invention according to claim 1 is a structure for arranging a sensor on a seat provided with a cushion pad and a plate-like member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
The mounting bracket is attached to the recess while being engaged with an engaging portion provided in the recess.

The invention according to claim 2 is an arrangement structure of a sensor on a seat including a cushion pad and a plate-like member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
The plate-shaped member is provided with an opening,
The mounting bracket has a bent portion that bends at the opening, and further has a bracket-side engaging portion that protrudes from an end of the bent portion and engages with the lower surface side of the plate-like member. characterized by

The invention according to claim 3 is an arrangement structure of a sensor on a seat including a cushion pad and a plate-shaped member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
The mounting bracket is mounted in the concave portion by engaging the bracket-side engaging portion with the lower surface side of the plate-like member and engaging with a claw portion projecting from the upper surface of the concave portion. It is characterized by

The invention according to claim 4 is an arrangement structure of a sensor on a seat including a cushion pad and a plate-like member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
The upper surface of the recess is provided with ribs for supporting both ends of the mounting bracket.

The invention according to claim 5 is an arrangement structure of a sensor on a seat including a cushion pad and a plate-like member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
The mounting bracket has a guide portion for a harness that electrically connects the sensor and an external device, and the guide portion is inclined downward.

The invention according to claim 6 is an arrangement structure of a sensor on a seat including a cushion pad and a plate-like member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
The mounting bracket is characterized by having a notch in the outer peripheral portion.

The invention according to claim 7 is the arrangement structure of the sensor on the seat according to claim 6,
The notch is formed at a position corresponding to a raised portion of the wire inserted into the plate member.

The invention according to claim 8 is a structure for arranging a sensor on a seat including a cushion pad and a plate-like member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
The plate member is provided with an opening continuous with the recess, and a harness for electrically connecting the sensor and an external device is inserted through the opening.

The invention according to claim 9 is the arrangement structure of the sensor on the seat according to claim 8,
The opening is an opening through which a duct for supplying air to an air passage formed in the cushion pad can pass.

The invention according to claim 10 is the arrangement structure of the sensor on the seat according to claim 9,
A plurality of the openings are provided in the plate member, and the harness is inserted through the openings through which the duct is not inserted.

The invention according to claim 11 is the arrangement structure of the sensor on the seat according to any one of claims 1 to 10,
The recess in which the sensor is arranged is provided at a position other than a position directly below a hollow portion formed in the cushion pad.

According to a twelfth aspect of the invention, in the arrangement structure of the sensor on the seat according to any one of the first to eleventh aspects, a claw-like shape is formed as the engaging portion on the upper surface of the recess. It is characterized in that a claw portion is protrudingly provided.

A thirteenth aspect of the invention is the arrangement structure of the sensor on the sheet according to any one of the first to the twelfth aspects, wherein the upper surface of the recess is provided with a second sensor adjacent to the claw portion. An engaging portion is provided.

According to the first aspect of the invention, in the arrangement structure of the sensor on the seat including the cushion pad and the plate-like member provided below the cushion pad, the concave portion is provided on the upper surface of the plate-like member. Since the sensor is arranged in the recess, unlike the conventional case where the sensor is arranged between the cushion pad and the outer skin, there is no space between the occupant's buttocks or thighs and the sensor. Since the cushion pad is interposed in the seat, it is difficult for the occupant to feel that the sensor is touching the buttocks and thighs of the occupant, and the occupant's seating feeling is improved compared to the conventional case. .
Further, if the sensor is simply arranged on the upper surface of the plate-like member, the cushion pad will swell by the amount of the sensor, giving the occupant a sense of discomfort and possibly deteriorating the seating feeling. Since the sensor is arranged in the concave portion provided on the upper surface of the plate-like member, it is possible to improve the seating feeling without giving the above sense of discomfort.

In addition, since the sensor is fixed to the mounting bracket and placed in the recess, it is sufficient to fix the sensor to the mounting bracket and then attach the mounting bracket to the recess. Therefore, the sensor is easily placed in the recess. . In addition, when the occupant sits on the seat and the occupant's load is applied to the sensor via the cushion pad, the mounting bracket absorbs part of the load. is less affected by the load of

Furthermore, since the mounting bracket is attached to the recess while being engaged with the engaging portion provided in the recess, the mounting bracket can be easily attached to the recess, and the engaging portion facilitates positioning of the mounting bracket. The position of the bracket is less likely to shift in the front-rear direction, left-right direction, or the like.

According to the second aspect of the invention, the plate-shaped member is provided with the opening, the mounting bracket has the bent portion that bends at the opening, and the plate protrudes from the end of the bent portion. Since the mounting bracket has a bracket-side engaging portion that engages with the lower surface side of the shaped member, the bent portion facilitates accurate positioning of the mounting bracket mainly in the left-right direction, and the mounting bracket is prevented from being displaced in the left-right direction. In addition, the rigidity of the mounting bracket itself can be improved. In addition, since the mounting bracket is provided with the bracket-side engaging portion, the mounting bracket can be mainly positioned accurately in the vertical direction, and the mounting bracket is less likely to be displaced in the vertical direction. Become.

According to the third aspect of the present invention, the mounting bracket is formed by engaging the bracket-side engaging portion with the lower surface side of the plate-like member and engaging with the claw portion projecting from the upper surface of the concave portion. Since the mounting bracket is mounted inside, the mounting bracket can be positioned more accurately, and the mounting bracket is less likely to be displaced in the front-back direction, the up-down direction, or the like.

According to the fourth aspect of the invention, since ribs are provided on the upper surface of the recess for supporting both ends of the mounting bracket, the main body of the mounting bracket is slightly lifted from the recess except for the ribs. This makes it easier for the mounting bracket to absorb a portion of the occupant load applied to the sensor. Moreover, since the rigidity of the recess itself can be improved by providing the rib, the recess is less likely to break.

According to the fifth aspect of the invention, the mounting bracket has a guide portion for the harness that electrically connects the sensor and the external device. Since it is supported from below by the guide part in a state where it is guided by the part and gently tilts downward, the harness supported by the guide part is less likely to vibrate relative to the sensor even if the seat vibrates. This makes it less likely that the harness will be damaged or disconnected.

According to the sixth aspect of the invention, since the mounting bracket has the notch in the outer peripheral portion, a load is applied to the sensor and the mounting bracket, and a force that causes deformation of the mounting bracket is generated. Since the notch absorbs the deformation of the mounting bracket even when it is applied, the deformation generated in the mounting bracket is easily restored when the force is no longer applied to the mounting bracket, and the deformation hardly remains in the mounting bracket.

According to the seventh aspect of the invention, the notch is formed at a position corresponding to the bulging portion of the wire inserted into the plate member, so that the mounting bracket and the bulging portion of the wire do not interfere with each other. Therefore, it is possible to prevent the mounting bracket, the plate-shaped member, and the like from being damaged.

According to the eighth aspect of the invention, the plate-like member has an opening that continues to the recess, and the harness that electrically connects the sensor and the external device is inserted through the opening. Therefore, handling of the harness becomes easier than when there is a distance between the recess and the opening. Moreover, if there is a distance between the recess and the opening, the harness will be sandwiched between the plate-like member and the cushion pad, and the harness will rub against the plate-like member or the cushion pad, resulting in damage to the harness. However, if the concave portion and the opening are continuous, such friction is less likely to occur, and the harness is less likely to be damaged or disconnected.

According to the ninth aspect of the invention, since the opening is an opening through which a duct for supplying air to the ventilation path formed in the cushion pad can pass, a new opening is provided in the plate-like member. An opening for the duct that has already been formed can be used without providing the part, and the harness can be passed through the opening.

According to the tenth aspect of the invention, a plurality of openings are provided in the plate-like member, and the harness is inserted through the openings through which the duct is not inserted. Since the harness and the duct do not rub against each other, the harness is less likely to be damaged or disconnected.

According to the eleventh aspect of the invention, the recess in which the sensor is arranged is provided at a position other than the position directly below the hollow portion formed in the cushion pad. The load applied to the pad is not absorbed by the hollow part formed in the cushion pad and is applied straight to the sensor, so the pressure applied to the sensor increases accurately, and the sensor detects that the occupant is seated on the seat. easier to detect.

According to the twelfth aspect of the present invention, the upper surface of the concave portion is provided with a claw-shaped claw portion as an engaging portion. In addition, by confirming that the claw protrudes upward from the engagement hole of the mounting bracket when mounting the mounting bracket to the recess, the mounting bracket and the claw can be properly engaged. and that the mounting bracket is properly positioned in the recess.

According to the thirteenth aspect of the invention, the second engaging portion is provided on the upper surface of the concave portion adjacent to the claw portion. 2, the peripheral edge portion of the engagement hole of the mounting bracket is sandwiched between them, so that the mounting bracket can be more accurately positioned in the front-rear direction, and the mounting bracket is less likely to be displaced in the front-rear direction. .

It is a perspective view showing a seat. FIG. 4 is a perspective view showing air passages and the like formed in the cushion pad of the seat cushion; 4 is a perspective view showing sensors and the like arranged in recesses of the seat cushion frame and the pan frame (plate-like member); FIG. FIG. 4 is a perspective view showing the sensor and mounting bracket; FIG. 4 is an enlarged view showing recesses and the like formed in a pan frame (plate-like member); It is a perspective view which shows the state which attached the mounting bracket to the recessed part. FIG. 9 is a perspective view showing the state of FIG. 8 as seen from the back side of the pan frame (plate-shaped member); FIG. 4 is a perspective view showing a state in which a mounting bracket to which a sensor or the like is attached is attached to a recess; FIG. 10 is a diagram showing a state in which a bracket-side engaging portion formed at a bent portion of the mounting bracket engages with the lower surface side of the pan frame (plate-like member); FIG. 4 is a cross-sectional view showing a state in which a sensor arranged in a concave portion of a pan frame (plate-shaped member) abuts on a lower surface of a cushion pad; FIG. 4 is a cross-sectional view showing a state in which a sensor is arranged at a position directly below a hollow portion formed in a cushion pad; FIG. 3 is a perspective view showing an example of a seat cushion frame with wires; It is a figure which shows the modification of the plate-shaped member etc. which were provided so that a wire might be inserted.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below have various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. do not have.

A seat 10 shown in FIG. 1 is provided in a vehicle such as an automobile, and a passenger such as a driver sits thereon. As shown in FIG. 1, the seat 10 includes a seat cushion 11 that supports the buttocks and thighs of an occupant; and a headrest 16 for supporting the head of the occupant. In addition, auxiliary support parts such as a neck rest, an arm rest, a foot rest, and an ottoman may be provided.

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

In this embodiment, the seat cushion 11 is provided with an air (warm or cold) ventilation path 30 between the cushion pad 12 and the skin 13, but the ventilation path 30 or the like is not necessarily provided. good too.
Specifically, as shown in FIG. 2, the cushion pad 12 is provided with an air passage concave portion 30A forming a part of the air passage 30. As shown in FIG. Further, a recess (not shown) forming the remaining part of the air passage 30 is provided at a position corresponding to the air passage recess 30A of the cover member 12A, and a predetermined portion of the cushion pad 12 of the cover member 12A is provided. The air passage 30 is formed by fitting into.

Further, a plurality of punched holes are formed in the cover member 12A, and these punched holes serve as the air outlets 30C of the air passage 30. As shown in FIG. The cushion pad 12 including the cover member 12A is covered with an air-permeable skin 13 at least at a portion corresponding to the air outlet 30C.
Then, air sent from a blower (not shown) is sent through the through hole 30B into the air passage 30, and the air circulating in the air passage 30 is blown out from the air outlet 30C of the air passage 30 toward the occupant. It has become so.

The seat cushion 11 of this embodiment is provided with a seat cushion frame 17 below the cushion pad 12 . As shown in FIG. 3, the seat cushion frame 17 includes a pair of left and right side frames 17A, and connecting members 17B that connect the front and rear ends of the side frames 17A (the connecting member 17B on the front end side is the pan frame). 18.), and a pan frame 18 constructed between each side frame 17A and each connecting member 17B.
In this embodiment, the case where the pan frame 18 functions as a plate-like member provided below the cushion pad 12 will be described. , which will be described later in a modified example.

A concave portion 20 is provided on the upper surface of the pan frame 18 (plate-like member), and the sensor 1 is arranged in the concave portion 20 . The sensor 1 can be, for example, a position sensor capable of detecting whether or not the passenger is seated on the seat 10 .
Although it is possible to attach the sensor 1 directly to the recess 20 , in this embodiment, the sensor 1 is fixed to the mounting bracket 2 and the mounting bracket 2 to which the sensor 1 is fixed is arranged in the recess 20 . ing.

When the sensor 1 is directly attached to the recessed portion 20 of the pan frame 18, work such as screwing the sensor 1 arranged in the recessed portion 20 is required, but the attachment is not always easy. However, by fixing the sensor 1 to the mounting bracket 2 and mounting it in the recess 20 as described above, the sensor 1 can be easily fixed to the mounting bracket 2, and the mounting bracket 2 can be easily fixed. Since attachment to the recess 20 is also easy, the sensor 1 can be easily arranged in the recess 20 .

A cushion pad 12 is arranged above the sensor 1 when the seat 10 is assembled. When an occupant sits on the seat 10, the load of the occupant is applied to the sensor 1 through the cushion pad 12. - 特許庁At that time, if the sensor 1 is directly attached to the recessed portion 20 of the pan frame 18, the sensor 1 will be subjected to the entire load, which may adversely affect the sensor 1. If the sensor 1 is attached to the recessed portion 20 via the mounting bracket 2, the mounting bracket 2 absorbs a portion of the load applied to the sensor 1 by the occupant. , the influence of the load of the occupant on the sensor 1 is reduced.

The configurations of the recess 20 and the mounting bracket 2 will be described in detail below. FIG. 4 is a perspective view showing the sensor 1 and the mounting bracket 2, and FIG. 5 is an enlarged view showing the concave portion 20 and the like formed in the pan frame 18 (plate-like member).
A locking hole 2b for locking the locking portion 1a of the sensor 1 is provided in the flat plate-shaped main body portion 2a of the mounting bracket 2, and the threaded portion 1b of the sensor 1 (not shown in FIG. 4. It will be described later.) 7) are provided. Then, the locking portion 1a of the sensor 1 is inserted into the locking hole 2b of the mounting bracket 2 and locked, and in this state, the threaded portion 1b inserted into the hole 2c of the mounting bracket 2 is inserted into the back side of the mounting bracket 2 ( That is, the sensor 1 can be easily attached to the mounting bracket 2 by screwing from the bottom side.

The sensor 1 is connected to a harness 1A for electrically connecting the sensor 1 and an external device (not shown, such as a power supply device and a signal processing device from the sensor 1). has a guide portion 2d of . Since the guide portion 2d is gently inclined downward with respect to the main body portion 2a of the mounting bracket 2, the harness 1A is guided by the guide portion 2d and gently inclined downward.
If the guide portion 2d is not formed on the mounting bracket 2, the harness 1A hangs down due to its own weight at the portion where the harness 1A is connected to the sensor 1. In this state, if the vehicle vibrates and the seat 10 vibrates, the harness 1A will hang down. Since 1A vibrates greatly relative to the sensor 1, the harness 1A is likely to be damaged or disconnected. On the other hand, by supporting the harness 1A in a gently downwardly inclined state by the guide portion 2d of the mounting bracket 2 as described above, the harness 1A supported by the guide portion 2d can be detected by the sensor 1 even if the seat 10 vibrates. Since it becomes relatively difficult to vibrate with respect to, the harness 1A is less likely to be damaged or disconnected.

A notch 2e is formed in the outer peripheral portion of the main body portion 2a of the mounting bracket 2. As shown in FIG.
By providing the notch 2e in the outer peripheral portion of the mounting bracket 2 in this manner, a load is applied to the sensor 1 and the mounting bracket 2 as described above, and the body portion 2a of the mounting bracket 2 is deformed. The notch 2e absorbs the deformation of the main body portion 2a of the mounting bracket 2 even when force is applied. Therefore, when the force is no longer applied to the mounting bracket 2, the deformation occurring in the main body portion 2a of the mounting bracket 2 is easily restored, and the deformation hardly remains in the mounting bracket 2. - 特許庁

On the other hand, the concave portion 20 of the pan frame 18 is provided with an engaging portion for engaging the mounting bracket 2 to mount the mounting bracket 2 to the concave portion 20 .
Specifically, as shown in FIG. 5, a claw portion 20a formed in a claw shape protrudes from the upper surface of the concave portion 20 as an engaging portion. Further, the main body portion 2a of the mounting bracket 2 is provided with an engaging hole 2f that engages with the claw portion 20a. As shown, the claw portion 20a of the concave portion 20 and the engagement hole 2f of the mounting bracket 2 are engaged with each other. In FIG. 6, illustration of the sensor 1 and the harness 1A is omitted so that the engagement between the claw portion 20a and the engagement hole 2f can be understood.

As described above, in the present embodiment, the mounting bracket 2 (engagement hole 2f) is connected to the engagement portion (claw portion 20a) provided in the recess 20, and the same applies to the second engagement portion 20b and the like, which will be described later. Since the mounting bracket 2 can be mounted in the recessed portion 20 by engaging with , the mounting bracket 2 can be easily mounted in the recessed portion 20 .
In addition, by attaching the mounting bracket 2 to the recessed portion 20 in a state in which the claw portions 20a of the recessed portion 20 and the engaging holes 2f of the mounting bracket 2 are engaged, positioning of the mounting bracket 2 in the front-rear direction is mainly performed by the claw portions 20a. can be performed accurately. Moreover, the claw portion 20a can also contribute to the positioning of the mounting bracket 2 in the left-right direction. Also, when attaching the mounting bracket 2 to the concave portion 20, by confirming that the claw portion 20a protrudes upward from the engaging hole 2f of the mounting bracket 2, the engaging hole 2f of the mounting bracket 2 and the claw can be confirmed. It becomes easy to confirm that the portion 20 a is properly engaged with the mounting bracket 2 and that the mounting bracket 2 is arranged in the appropriate position of the recess 20 .

3 to 5 show the case where the sensor 1 is arranged in the recess 20 with the harness 1A extending to the left side of the sensor 1, the harness 1A extends to the right side of the sensor 1. In some cases, the sensor 1 may be placed in the recess 20. In the present embodiment, as shown in FIG. 5, the claw portion 20a is provided only on the rear side of the recessed portion 20, but in this way the direction of the harness 1A, that is, the direction of the guide portion 2d can be either leftward or rightward. Therefore, the engagement hole 2f of the mounting bracket 2 is provided not only on the rear side but also on the front side in the state shown in FIG.

Further, as shown in FIG. 5, a second engaging portion 20b is provided on the upper surface of the concave portion 20 adjacent to the claw portion 20a. When the mounting bracket 2 is mounted in the recess 20, as shown in FIG. 6, the peripheral portion α of the engaging hole 2f of the mounting bracket 2 is sandwiched between the claw portion 20a and the second engaging portion 20b.
In this way, when the mounting bracket 2 with the sensor 1 mounted thereon is mounted in the recess 20 of the pan frame 18, the engagement hole 2f of the mounting bracket 2 is closed by the claw portion 20a of the recess 20 and the second engaging portion 20b. By sandwiching the peripheral portion α, the mounting bracket 2 can be positioned more accurately in the front-rear direction. Further, the mounting bracket 2 is less likely to be displaced in the front-rear direction.

Further, in this embodiment, as shown in FIG. 5, the left and right ends of the recess 20 are formed to be slightly higher than the upper surface of the recess 20, and these portions are attached to the mounting bracket 2 (see FIG. 6). ) of the body portion 2a (left and right portions in this embodiment) are ribs 20c that support them from below.
When the rib 20c is provided in this way, the body portion 2a of the mounting bracket 2 is slightly lifted from the recessed portion 20 in the portion other than the rib 20c. Moreover, the mounting bracket 2 tends to absorb part of the load. In addition, since the rigidity of the concave portion 20 itself can be improved by providing the rib 20c compared to the case where the rib 20c is not provided, when the occupant is seated on the seat 1, the load of the occupant is applied, and the pan frame 18 does not move. The concave portion 20 is less likely to be destroyed when deformed so as to become.

In addition, for example, it is also possible to form a rib on the lower surface side of the recess 20 so as to improve the rigidity of the recess 20 .
The recess 20 is formed with a relief portion 20d as an opening, and when the mounting bracket 2 is attached to the recess 20, the sensor 1 protrudes downward from the lower surface of the mounting bracket 2 as shown in FIG. Each relief portion 20d is formed so that the locking portion 1a, the screw portion 1b, and the like are positioned within the relief portion 20d. In the present embodiment, with this configuration, when the mounting bracket 2 is attached to the recess 20, the engaging portion 1a, the screw portion 1b, etc. of the sensor 1 projecting downward from the lower surface of the mounting bracket 2 do not move into the recess 20. to avoid interfering with

In this embodiment, the mounting bracket 2 side is also provided with a structure for engaging with the recessed portion 20 of the pan frame 18 . Specifically, as shown in FIG. 4, the mounting bracket 2 has bent portions 2g bent downward at the left and right ends of the body portion 2a. In the state shown in FIG. 4, the left bent portion 2g of the mounting bracket 2 is divided into two front and rear portions because the guide portion 2d is provided therebetween. It is formed in a single flat plate shape (see FIG. 7 and FIG. 9 described later).
When the mounting bracket 2 is attached to the recess 20, the bent portions 2g sandwich the rib 20c (see FIG. 5) of the recess 20 from the left and right. In this manner, the bent portion 2g mainly facilitates accurate positioning of the mounting bracket 2 in the left-right direction, and the mounting bracket 2 is less likely to be displaced in the left-right direction. Further, by providing the bending portion 2g in the mounting bracket 2 and bending the mounting bracket 2, the rigidity of the mounting bracket 2 itself can be improved.

Further, the bent portion 2g of the mounting bracket 2 is provided with a bracket-side engaging portion 2h that protrudes forward from the front end portion of the bent portion 2g and rearward from the rear end portion thereof.
Then, as shown in FIG. 9, when the mounting bracket 2 is attached to the recess 20 of the pan frame 18, the bracket-side engaging portion 2h of the mounting bracket 2 is positioned on the lower surface side of the pan frame 18 (see β in FIG. 9). indicates a rib provided on the lower surface of the pan frame 18). By constructing in this manner, mainly the mounting bracket 2 can be accurately positioned in the vertical direction by the bracket-side engaging portion 2h, and the mounting bracket 2 is less likely to be displaced in the vertical direction.

In this embodiment, by attaching the mounting bracket 2 to which the sensor 1 is attached to the recessed portion 20 of the pan frame 18 as described above, the sensor 1 is attached to the pan frame 18 via the mounting bracket 2 as shown in FIG. can be accurately and reliably attached to the recess 20 of the

By the way, as shown in FIGS. 3 and 5, when the pan frame 18 is provided with the opening 18A, by inserting the harness 1A through the opening 18A, the harness 1A is placed under the seat 10. can lead.
It is also possible to newly form an opening 18A in the pan frame 18 for inserting the harness 1A. 3 and 5, etc., the present invention is not limited to the case where two openings 18A are provided as shown in FIG. may be provided, or three or more may be provided.
Further, the openings 18A need not be provided on the left and right sides of the recess 20 as shown in FIG. Furthermore, the opening 18A may be a notch (that is, a shape notched inward from the end of the pan frame 18) or the like, and is not limited to a hole as shown in FIG. 3 and the like. Also, the opening 18A need not be the opening for the duct 19 described below.

In the seat 10 of this embodiment, as shown in FIG. (not shown) is sent into the ventilation passage 30 through the through hole 30B, and the air that has circulated in the ventilation passage 30 is blown out from the air outlet 30C of the ventilation passage 30 toward the occupant. there is An opening 18A is provided as a through hole through which a duct 19 (see FIG. 1) for supplying air from the blower to the through hole 30B can pass.
Therefore, by using the opening 18A as an opening through which the harness 1A of the sensor 1 is inserted, the opening 18A for the duct that has already been formed can be replaced without newly providing the opening 18A in the pan frame 18. The harness 1A can be inserted through the opening 18A.

Also, the blower is provided below the pan frame 18, but since it is normally provided on either the left or right side of the seat 10, the position where the duct 19 penetrates the pan frame 18 is also adjusted from the center to match the position of the blower. Left side or right side. Therefore, in the seat 10 of this embodiment, as shown in FIGS. and one on the right, a total of two.
In this embodiment, the portion between the two openings 18A is a recess, and the recess 20 of the pan frame 18 described above is formed in this portion.

In this embodiment, the opening 18A is provided continuously with the recess 20 of the pan frame 18 as described above. That is, the sensor 1 and the mounting bracket 2 are placed between the plurality of openings 18A (the portions between the plurality of openings 18A that bridge the front and rear portions of the pan frame 18). The recess 20 described above is provided for placement.
In general, when a plurality of openings 18A are provided close to each other, the portions between them have low rigidity and are easily deformed. Since the rigidity of the concave portion 20 itself is improved by, for example, providing the rib 20c on the concave portion 20, such deformation is less likely to occur.

Further, since the harness 1A of the sensor 1 attached to the recessed portion 20 of the pan frame 18 via the mounting bracket 2 is inserted through the opening portion 18A provided continuously to the recessed portion 20, the recessed portion 20 and the opening portion Handling of the harness 1A becomes easier than when there is a distance between the harness 18A. Further, if there is a distance between the recess 20 and the opening 18A, the harness 1A will be sandwiched between the pan frame 18 and the cushion pad 12 (see FIG. 2 and FIG. 10 described later). The pan frame 18 and the cushion pad 12 may rub against each other and the harness 1A may be damaged or disconnected. Such friction is less likely to occur, and the harness 1A is less likely to be damaged or disconnected.

Also, as shown in FIG. 3, the duct 19 is inserted through one of the plurality of openings 18A. Therefore, if the harness 1A is inserted through the opening 18A through which the duct 19 is not inserted, the harness 1A and the duct 19 do not interfere with each other, and the harness 1A and the duct 19 do not rub against each other. 1A is less likely to be damaged or disconnected.
The harness 1A may be configured to be inserted through the opening 18A through which the duct 19 is inserted.

In this embodiment, as shown in FIG. 10, the duct 19 is passed through the opening 18A of the pan frame 18 and inserted into the through hole 30B formed in the cushion pad 12 from below. is inserted into the through-hole 30B, the cushion pad 12 is not lifted, and the upper surface of the sensor 1 is kept in contact with the lower surface of the cushion pad 12.例文帳に追加
Further, when an occupant sits on the seat 10, a load is applied to the cushion pad 12 from above, the cushion pad 12 is compressed, and the pressure applied from the cushion pad 12 to the sensor 1 increases. Therefore, the sensor 1 can reliably detect when the occupant is seated on the seat 10 .

FIG. 10 shows the case where the upper surface of the pan frame 18 and the upper surface of the sensor 1 are flush with each other, and the cushion pad 12 having a flat bottom is placed thereon. is located above the upper surface of the pan frame 18, and a recess is provided at a position corresponding to the sensor 1 of the cushion pad 12. As shown in FIG.

Further, as shown in FIG. 11, if the recessed portion 20 of the pan frame 18 is provided at a position directly below the hollow portion such as the air passage 30 formed in the cushion pad 12, the occupant is prevented from sitting on the seat 10. , the portion of the cushion pad 12 on the upper side of the hollow portion bends downward and absorbs the load, making it difficult for the load to be transmitted to the lower portion of the hollow portion. It may become difficult for the sensor 1 to detect that the passenger is seated on the seat 10 .
Therefore, it is desirable that the recessed portion 20 in which the sensor 1 is arranged is provided at a position other than the position directly below the hollow portion such as the air passage 30 formed in the cushion pad 12 . With this configuration, when an occupant is seated on the seat 10, the load applied to the cushion pad 12 is applied straight to the sensor 1. - 特許庁Therefore, the pressure applied to the sensor 1 increases appropriately, and the sensor 1 can easily detect that the occupant is seated on the seat 10 .

As described above, according to the arrangement structure of the sensor 1 on the seat 10 according to the present embodiment, the sensor 1 is provided on the upper surface of the plate-like member (pan frame 18) provided on the lower side of the cushion pad 12. 10 (see FIG. 10).
In the conventional arrangement structure of the sensor on the seat, as described above, the sensor 1 is arranged between the cushion pad 12 and the skin 13 (that is, immediately below the skin), so that the buttocks and the large area of the occupant seated on the seat 10 are located. In some cases, the feeling of something hitting the thigh through the outer skin 13 of the seat 10 is felt, and the seating feeling is deteriorated.

However, in the arrangement structure of the sensor 1 on the seat 10 according to the present embodiment, the cushion pad 12 is interposed between the occupant's buttocks or thighs and the sensor 1 as described above. It becomes difficult for the passenger to perceive that the sensor 1 is in contact with the buttocks and thighs of the passenger, and the seating feeling of the passenger is improved as compared with the conventional case.

Further, if the sensor 1 is simply arranged on the upper surface of the plate-shaped member (pan frame 18), the cushion pad 12 swells by the amount of the sensor 1, giving the occupant a sense of discomfort and possibly deteriorating the seating feeling. In the arrangement structure of the sensor 1 on the seat 10 according to the present embodiment, as described above, the concave portion 20 is provided on the upper surface of the plate-like member (pan frame 18), and the sensor 1 is arranged therein. It is possible to improve the seating feeling without giving a sense of discomfort.

[Modification]
In the above embodiment, the case where the pan frame 18 provided below the cushion pad 12 is used as the plate member has been described. However, the structure of the seat cushion frame 17 below the cushion pad 12 (not shown in FIG. 12) is composed of a pan frame 18 and a wire 17C (also called an S spring or the like) as shown in FIG. 12, for example. Alternatively, there may be a case where the pan frame 18 is not provided and only the wire 17C is provided.
In such a case, it is possible to provide a plate member at the wire 17C portion.

At that time, for example, as shown in FIG. 13, a plate-like member 25 can be provided in the portion of the wire 17C so as to insert the wire 17C. Further, in the same manner as in the above-described embodiment, a concave portion 26 is provided on the upper surface of the plate-like member 25, and the sensor 1 can be arranged in the concave portion 26 while being fixed to the mounting bracket 2. is.
13 omits illustration of an engaging portion (see FIGS. 4 and 5) for attaching the mounting bracket 2 to the recess 26. An engaging portion or the like is appropriately formed on the side of the recess 26 or the side of the mounting bracket 2 . Although the harness 1A and the like of the sensor 1 are also omitted, it is possible to provide the mounting bracket 2 with the guide portion 2d (see FIG. 4, etc.) and the like in this case as well. In addition, the configurations of the recessed portion 20, the mounting bracket 2, etc. according to the above-described embodiment can be appropriately applied to the recessed portion 26, the mounting bracket 2, etc. in this modified example.

In the case of the modification shown in FIG. 13, since the wire 17C is inserted into the plate-like member 25, in the concave portion 26 of the plate-like member 25, the portion where the wire 17C is inserted is raised more than the other portions. (See dashed line in figure). Therefore, the notch 2e (see FIG. 4) of the mounting bracket 2 in the above embodiment can be formed at a position corresponding to the raised portion of the wire 17C inserted into the plate member 25 as shown in FIG. is.
With this configuration, in addition to the effects described in the above embodiment, the mounting bracket 2 has the notch 2e in the raised portion of the wire 17C, so that the mounting bracket 2 interferes with the raised portion of the wire 17C. Therefore, it is possible to prevent the mounting bracket 2, the plate member 25, and the like from being damaged.

It goes without saying that the present invention is not limited to the above embodiments and modifications, and can be modified as appropriate without departing from the scope of the present invention.

1 sensor 1A harness 2 mounting bracket 2d guide portion 2e notch 2g bending portion 2h bracket side engaging portion 10 seat 12 cushion pad 17C wire 18 pan frame (plate-like member)
18A Opening 19 Duct 20 Recess 20a Claw (engaging portion)
20b second engaging portion (engaging portion)
20c rib 25 plate member 26 recess 30 air passage (hollow part)
β Lower side of plate member

Claims (1)

A structure for arranging a sensor on a seat including a cushion pad and a plate member provided below the cushion pad,
A concave portion is provided on the upper surface of the plate-like member, and the sensor is arranged in the concave portion,
the sensor is positioned within the recess while secured to a mounting bracket;
A structure for arranging a sensor on a seat, wherein the mounting bracket is attached to the recess in a state of being engaged with an engaging portion provided in the recess.

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