JP2011173535A - Load detecting device for vehicle seat and mounting structure thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load detecting device preventing wire disconnection in the load detecting device and allowing detection parts to be attached stably with high precision at detection positions of a vehicle seat, and a mounting structure of the load detecting device. <P>SOLUTION: The load detecting device includes a flexible film-like body 23 and an engagement member 38. The film-like body includes a plurality of the detection parts A-D to detect the information of a load on a pad member 10 by contacting with a sitting-side surface of the pad member; an external output part 33 to output load signals detected by the detection parts; and a conductive part 28 to establish conduction between the plurality of detection parts or between the detection parts and the external output part. The engagement member can be engaged to and disengaged from at least one of a mooring member 16 and a locking member 20. The mooring member is disposed at a forming location of the conductive part of the film-like body which is also a location crossing a recessed groove 14 of the pad member. The mooring member is disposed at a recessed groove corresponding location in the pad member. The locking member is disposed in a skin member 12 so as to be connectable to the mooring member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a load detection device that is installed on a vehicle seat and detects a seated state of an occupant, and a mounting structure of the load detection device.

Conventionally, in order to improve the performance of various safety devices such as seat belts and airbags installed in automobiles, there are cases where these safety devices are controlled by detecting a state in which an occupant is seated on a vehicle seat. A thin and flexible film-like membrane switch is conceivable as a load detection device suitable for detecting the seating state of such an occupant. On the other hand, the seat portion and the backrest portion of the vehicle seat are configured by covering a pad member generally made of urethane or the like with a skin member such as cloth, vinyl leather, leather, etc., and a recess provided on the surface of the pad member. The skin member is drawn into the groove, and the skin member drawn into the concave groove is fixed to a mooring member (wire) arranged in the vicinity of the concave groove inside the pad member by a fixture (fixing ring). It is comprised so that an outer skin member may follow the shape of the surface of this. In the vehicle seat configured as described above, the concave groove is often located at the seating position of the pad member of the seat portion of the vehicle seat, so that the detection is provided between the detection portions of the load detection device (membrane switch). The conduction part that transmits the signal of the part is in a state of crossing the concave groove. And when attached to a vehicle seat, the load detection device is disposed between the surface of the pad member and the skin member, and the conductive portion of the load detection device is connected to the concave groove spanned by the skin member. It may be in a state of bending at a steep angle at the position of the groove. If it is used for a long time in such a state, there is a possibility that the conduction part of the load detection device is disconnected. Therefore, according to the seating sensor arrangement structure disclosed in Patent Document 1 that has been considered to prevent such disconnection, when the load detection device is arranged on the surface of the pad member, the pressure-sensitive portion (detection portion) of the load detection device. Is arranged on the rear side of the groove portion, and the connection portion (conduction portion) of the load detection device is arranged on the inclined portion. It is assumed that a state in which the conductive portion is bent at a steep angle can be avoided by arranging the conductive portion on the inclined portion in this way.

JP 2002-65396 A

However, a locking member (wire) is inserted into the skin member formed in a cylindrical bag shape to hold the skin member, but this locking member and the load detection device are not in a state of holding each other. When the seating of the vehicle on the vehicle seat is repeated, the load detection device (conduction portion) and the locking member may be rubbed and the load detection device may be damaged and disconnected. Further, the load detecting device is not held by a mooring member which is a thin wire-like flexible material and is a wire rod embedded in the pad member and extending along the groove. Therefore, it is difficult to position and set the pressure sensitive part (detection part) for detecting the seating state at a position to be detected on the vehicle seat with high accuracy and stability.

The present invention has been made in view of the conventional problems, and it is possible to prevent disconnection of the load detection device and to load the detection unit at a position to be detected on the vehicle seat with high accuracy and stability. A detection device and its mounting structure are provided.

In order to solve the above-described problem, the structural feature of the invention according to claim 1 is to cover a seating-side surface of a vehicle seat pad member having a recessed groove formed in a part thereof, and the seating-side surface. As described above, it is adapted to be laid so as to cross the recessed groove between the skin member mounted on the pad member and detects the load information on the pad member by contacting the seating side surface of the pad member A plurality of detection units, an external output unit that outputs a load signal detected by the detection unit, and a conduction unit that conducts between the plurality of detection units or between the detection unit and the external output unit. A flexible film-like main body, and a mooring member provided at a portion of the film-like main body where the conductive portion is formed and crossing the groove, and provided at the portion corresponding to the groove in the pad member And the mooring part And detachably engaging member to at least one of the engaging member provided on the freely the skin member connected to it comprise a.

According to a second aspect of the present invention, there is provided a structural feature of the first aspect, wherein the engagement member includes an attachment portion that can be attached to and detached from the film-like main body, and the anchoring member or the engagement member protruding from the attachment portion. And an engaging portion that engages with the stop member in a state in which the film-like main body is separated.

The structural feature of the invention according to claim 3 is that, in claim 2, the attachment portion has a holding structure for retaining the holding portion.

The structural feature of the invention according to claim 4 is the structure according to claim 2 or claim 3, wherein the attachment portion,
And the attachment site | part of the said attachment part in the said film-like main body has an engagement structure which mutually engages and regulates position shift.

The structural features of the invention according to claim 5 are: a pad member having a recessed groove formed in a part of the seating side surface; and a skin member attached to the pad member so as to cover the seating side surface; ,
5. The vehicle seat according to claim 1, further comprising a mooring member provided at the portion corresponding to the groove in the pad member and a locking member provided on the skin member so as to be connectable to the mooring member. The vehicle seat load detecting device mounting structure according to claim 1, wherein the engaging member is housed in the concave groove, and the detecting portion is disposed on a seating side surface of the pad member. The engagement member is engaged with at least one of the anchoring member and the locking member in a state where the film-like main body is bent and deformed.

According to the first aspect of the present invention, the plurality of detection portions of the film-shaped main body are provided in contact with the seating side surface of the pad member, and are portions where the conductive portions of the film-shaped main body are formed and cross the groove. The provided engaging member engages with either the anchor member provided at the portion corresponding to the concave groove of the pad member or the locking member provided on the skin member so as to be connectable to the anchor member. Therefore, when the engaging member is engaged with the anchoring member provided in the corresponding portion of the pad groove of the pad member, the conductive portion of the film-like main body is loosely moved in the groove and separated from the groove. It is possible to prevent the detection unit from deviating from the set detection position on the vehicle seat (the seating side surface of the pad member). Further, when the engaging member is freely connectable to the mooring member and is engaged with the engaging member provided on the skin member, the relative movement between the engaging member and the conducting portion is restricted and the engaging member is brought into contact with the engaging member. Can prevent the conducting part of the film-like body from being damaged, and the engaging member is indirectly engaged with the anchoring member by connecting the locking member to the anchoring member, and the conducting part is detached from the groove. Can be prevented. Further, when the engaging member is engaged with the anchoring member and the engaging member, the engaging member provided on the skin member and the anchoring member provided on the pad member can be engaged, A role of fixing the skin member to the pad member can be provided. As a result, a dedicated fixture for locking the skin member used conventionally to the anchoring member of the pad member can be omitted, and the number of parts can be reduced to reduce the cost.

According to the second aspect of the invention, the engaging member is detachably attached to the film-like main body, and the film-like main body is separated from the anchoring member provided on the pad member or the locking member provided on the skin member. It engages with the anchoring member or the locking member in the state of being caused to move. Therefore, the conducting portion of the film-like main body is held at a predetermined interval with respect to the mooring member or the locking member, and even if the skin member, the film-like main body and the pad member are pressed by the occupant's seating operation or the like, the mooring member In addition, the engaging member and the conductive portion of the film-like main body are not rubbed with each other, and the conductive portion can be prevented from being disconnected by rubbing.

According to the invention which concerns on Claim 3, the attachment part of an engaging member has a holding structure which hold | maintains and retains the conduction | electrical_connection part of a film-like main body. Therefore, in addition to the engagement member being detachable from the conducting portion, the holding structure can prevent the conducting portion attached to the mounting portion from being easily detached.

According to the invention which concerns on Claim 4, it has the engaging structure which controls position shift in the attachment part of an engaging member, and the attachment site | part in a film-like main body. Thereby, after a film-like main body is attached to a vehicle seat, it can prevent that each detection part of a film-like main body shifts from a set detection position on a vehicle seat.

According to the fifth aspect of the present invention, the plurality of detection portions of the film-like main body are provided in contact with the seating side surface of the pad member, which is a formation portion of the conduction portion of the film-like main body, and the concave groove of the pad member is formed. In a state where the engaging member provided in the crossing part is in a state of being accommodated in the concave groove, and the film-like main body is bent and deformed so that the detection portion is disposed on the seating side surface of the pad member, The engaging member is engaged with at least one of the anchoring member and the locking member. for that reason,
When the engaging member is engaged with the mooring member of the pad member, each detecting portion is set on the vehicle seat by the conductive portion of the film-like main body floating in the concave groove or being detached from the concave groove. It is possible to prevent deviation from the detection position. Further, when the engaging member is engaged with the engaging member of the skin member, the relative movement between the engaging member and the conducting portion is restricted, and the conducting portion of the film-like main body is prevented from being damaged by contact with the engaging member. Further, by connecting the locking member to the mooring member, the conducting portion can be indirectly engaged with the mooring member, and the conducting portion can be prevented from being detached from the concave groove. Further, when the engaging member is engaged with the anchoring member and the engaging member, the engaging member provided on the skin member and the anchoring member provided on the pad member can be engaged, A role of fixing the skin member to the pad member can be provided.
As a result, a dedicated fixture for locking the skin member used conventionally to the anchoring member of the pad member can be omitted, and the number of parts can be reduced to reduce the cost.

1 is a perspective view showing an overall configuration of a vehicle seat to which a load detection device mounting structure according to the present invention is applied. It is a top view which shows the cushion part of a vehicle seat. It is the elements on larger scale of the cushion part shown by excising a part of skin member. (A) is a top view of the membrane switch, (b) is a bottom view of the membrane switch. It is a VV sectional view in Drawing 2 showing the attachment state of the load detecting device concerning a 1st embodiment. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 2. It is a perspective view of an engagement clip. It is a side view of an engagement clip. It is a front view of an engagement clip. It is a side view of another example of an engagement clip. It is a figure which shows the state which the attachment part of another example of an engagement clip opened. It is an enlarged view of a partial cross section showing another example of the retaining portion. It is a VV sectional view in Drawing 2 showing the attachment state of the load detecting device concerning a 2nd embodiment. It is a side view of a holding clip. It is a front view of a holding clip. It is a VV sectional view in Drawing 2 showing the attachment state of the load detecting device concerning a 3rd embodiment. It is a side view of a holding engagement clip. It is a front view of a holding engagement clip. It is a figure which shows the state which the attachment part of another example of a holding engagement clip opened. (A) is a top view of another example of the membrane switch, (b) is a bottom view of another example of the membrane switch.

Hereinafter, a first embodiment in which a seat detection device for a vehicle seat according to the present invention is applied to a vehicle seat will be described with reference to the drawings. As shown in FIG. 1, the vehicle seat 2 has a cushion portion 4.
The seat back portion 6 and the load detection device 8 are provided. As shown in FIG. 3, the cushion portion 4 includes a pad member 10 made of urethane or the like, and a skin member 12 made of cloth (vinyl leather, leather, etc.) covered on the surface (sitting surface) of the pad member 10. I have. On the upper surface of the pad member 10 of the cushion portion 4, as shown in FIG. 3, a concave groove 14 is formed extending in the left-right direction (up-down direction in FIG. 3). In the pad member 10 and below the concave groove 14, FIG.
And as shown in FIG. 3, the mooring member 16 over the substantially full width of the ditch | groove 14 is embed | buried with a metal wire. As shown in FIG. 6, a locking member holding portion 19 is formed on the skin member 12 by sewing a separate cloth in a cylindrical bag shape in the middle portion along the concave groove 14, and in the locking member holding portion 19, A wire locking member 20 is fitted. As will be described later, the outer ring member 12 is engaged with the pad member 10 by engaging the fixing ring 18 engaged with the anchoring member 16 of the pad member 10 with the locking member 20.

A membrane switch 22 as a load detection device includes a film-like main body 23 and a connector 32.
It consists of. The membrane switch 22 is disposed between the pad member 10 and the skin member 12. As shown in the plan view of FIG. 4A, the film-like main body 23 includes four contact points A to D serving as detection units arranged in a rectangular shape, and a first conduction unit that connects the contact point A and the contact point B. 24,
A second conductive portion 26 that connects the contact C and the contact D, a third conductive portion 28 that connects the first conductive portion 24 and the second conductive portion 26, and a connector provided at the third conductive portion 28 and the base end portion And a fourth conductive portion 30 that connects the second conductive portion 32 and the fourth conductive portion 30. An external output portion 33 is provided at the base end portion of the film-like main body 23. The external output unit 33 outputs load information detected by the detection unit (contacts A to D), and an output electrode is formed on the external output unit 33. A connector 32 is connected to the external output unit 33. The connector 32 is an unillustrated ECU (Electr) for judging the seated state of the occupant.
onic Control Unit). The film-like main body 23 is configured by polymerizing an upper film and a lower film, both of which are not shown, via an insulating spacer. The upper film and the lower film are made of, for example, polyethylene naphthalate (
PEN), etc., is a thin-walled film made of a resin material, such as contacts A to D and conductive portions 24, 26,
It has 28 and 30 external shapes. For example, the insulating spacer may be polyethylene terephthalate (
PET), etc., and has an outer shape that substantially conforms to the shape of the upper film and the lower film,
A circular opening is provided at a position corresponding to the contact. In each of the contacts A to D, a circular upper electrode (not shown) arranged on the upper film and a circular lower electrode (not shown) arranged on the lower film are concentrically across the opening. It is provided so as to face each other. When a load in the thickness direction is applied to the contact portion, the upper electrode and the lower electrode are brought into contact with each other and turned on, and a current flowing through this contact can be detected. The electrodes of the contacts A to D are connected to the conductive parts 24, 26,
The external output unit 33 is connected to the electrodes 28 and 30.

On the back surface of the film-like main body 23, as shown in the back view of FIG. 4B, a double-sided tape (shown by diagonal lines) 34 is attached or an adhesive (adhesive) is applied. The double-sided tape 34 is not affixed to the back surfaces of the contacts A to D, and mainly the conductive portions 24, 26, and 28.
, 30 are attached to the back surface. As a result, the conductive portions 24, 26, 28, and 30 are securely affixed in the concave groove by the adhesion of the double-sided tape, and the sensitivity as the detection portion for the contacts A, B, C, and D is ensured. Sitting discomfort caused by the displacement of the pad member 10 and the pad member 10 is suppressed.

As shown in FIG. 3, the membrane switch 22 has contacts A to B positioned at predetermined detection positions on the upper surface of the pad member 10 of the cushion portion 4, and conductive portions 24, 26, 28, and 30 are attached to the membrane switch 22. Fixed. As shown in FIG. 5, the bending deformation portion of the third conductive portion (conduction portion forming portion) 28 of the film-like main body 23 is bent and deformed as shown in FIG. 5. 36 is formed and inserted into the recessed groove 14. In the vicinity of the lowest point of the bending deformation portion 36, an engagement clip 38 as an engagement member is provided. The engaging clip 38 is made of, for example, a hard resin having elasticity, and as shown in FIGS. 7 and 8, as shown in FIGS. 7 and 8, the engaging clip 38 is integrally formed in a U-shaped cross section and sandwiches the bending deformation portion 36 of the third conducting portion 28. 40 and an engaging portion 42 that protrudes upward from the upper surface of the mounting portion 40 and engages with the locking member 20 of the skin member 12. The attachment portion 40 is formed in a shape in which a strip material is bent 180 degrees at the center in the longitudinal direction, and is provided with a substantially U-shaped cross section with upper and lower end portions facing each other in parallel. As shown in FIG. 9, both ends are curved so as to bend upward in the entire short direction, and are along the bending of the bending deformation portion 36 to be sandwiched. A retaining portion 44 that protrudes toward the lower edge portion is formed at the upper edge portion of the opening end of the attachment portion 40 so that the opening end becomes narrow. By this retaining portion 44, the mounting portion 40
It is prevented that the bending deformation part 36 fitted to the is easily removed. Further, the retaining portion 44 constitutes a holding structure for retaining and holding the conducting portion 28.

An unillustrated double-sided tape is affixed to the lower surface of the mounting portion 40, and the mounting portion 40 is attached by this double-sided tape.
Is attached to the bottom surface of the concave groove 14. The engaging portion 42 includes a support portion 46 that protrudes from the upper surface of the attachment portion 40, a grip portion 48 that is supported by the support portion 46 and inserts and holds the locking member 20 of the skin member 12 through the opening at the upper end, And an insertion guide portion 50 formed in the opening so as to gradually increase the spacing between the edges facing upward. The grip portion 48 has elasticity, and when the locking member 20 is inserted, when the opening is deformed in the opening direction, the gripping portion 48 holds the locking member 20 by urging it in a direction to return to the original shape. As shown in FIG. 5, the engagement clip 38 separates the surface on the locking member side of the bending deformation portion 36 provided in the third conducting portion 28 of the film-like main body 23 from the locking member 20. It comes to hold in.

On the other hand, as shown in FIG. 2, exposed portions 52 where the anchoring members 16 are exposed are provided on both left and right sides of the cushion portion 4 away from the center in the left-right direction of the pad member 10. The exposed portion 52 is formed by deleting a part of the pad member 10 that faces the extending anchoring member 16 at the upper side. Then, as shown in FIG. 6, a fixed ring 18 provided with a cut (not shown) at one place is engaged with a portion where the anchoring member 16 is exposed. The locking member 20 of the skin member 12 is engaged with the fixed ring 18, and the skin member 12 is fixed to the pad member 10.

In the above embodiment, the mounting portion 40 is made of a hard resin and integrally formed in a U shape. However, the mounting portion 40 is not limited to this, and for example, as shown in FIGS. The structure which connects 54a, 54b with the spring member 56 urged | biased in the direction clamped may be sufficient.
A part (attachment portion) of the bending deformation portion 36 of the film-like main body 23 is deformed by the fitting protrusion 58 provided in the upper attachment member 54a and the fitting hole 60 provided in the lower attachment member 54b. Therefore, the contact points A to D are determined so as not to move at a predetermined detection position on the cushion portion 4 by preventing the displacement of the sandwiched position. An engagement structure that restricts misalignment is configured by the fitting protrusion 58 and the fitting hole 60 and a part of the bending deformation portion 36 that is deformed by sandwiching the fitting protrusion 58 and the fitting hole 60. Is done. As shown in FIG. 12, the retaining portion is provided with an engagement protrusion 64 with a barb at the upper end, and an engaged hole 66 that can be engaged with the engagement protrusion 64 is provided at the lower end. The protrusion 64 and the engaged hole 66 may be engaged. Thus, the mounting members 54a, 5
By closing the opening 4b, it is possible to more reliably prevent the bending deformation portion 36 of the film-like main body 23 from being pulled out and prevent the attachment members 54a and 54b from opening apart from each other. it can.

Next, attachment of the vehicle seat load detection device in the first embodiment will be described below. First, the contacts A to D of the membrane switch 22 are arranged at a predetermined detection position on the surface of the pad member 10 of the cushion portion 4 of the vehicle seat 2 and temporarily positioned. When the third conductive portion 28 crosses the groove 14, the bending deformation portion 3 is formed by bending and deforming the portion inserted into the groove 14.
6, the engaging clip 38 is held by the bending deformation portion 36 at the attachment portion 40 so that the engaging portion 42 faces upward. Next, the engaging clip 38 sandwiching the bending deformation portion 36 of the film-like main body 23 is inserted into the recessed groove 14, and the back surface of the mounting portion 40 of the engaging clip 38 is inserted into the recessed groove 14.
Paste to the bottom of the. Subsequently, the back surface of the bending deformation portion 36 is attached to the side wall portion of the concave groove 14.
Next, the whole conductive part of the film-like main body 23 is affixed to the surface of the pad member 10, thereby positioning and fixing the contacts A to D at predetermined detection positions.

Next, for the skin member 12, the portion where the locking member 20 is fitted is inserted into the concave groove 14,
The anchoring member 16 of the pad member 10 and the locking member 20 of the skin member 12 are connected by the fixing ring 18 at the left and right exposed portions 52 that are separated from the center in the left-right direction of the cushion portion 4. And about the part of the skin member 12 (locking member holding | maintenance part 19) which the membrane switch 22 opposes,
The locking member 20 is fitted and held in the engaging portion 42 of the engaging clip 38.

According to the vehicle seat load detection device configured as described above, the plurality of detection portions (contacts A to D) of the film-like main body 23 are provided in contact with the seating side surface of the pad member 10, and the film-like main body is provided. The bending deformation portion 36 is formed in a portion that is the formation portion of the conductive portion 23 (third conduction portion 28) and crosses the concave groove 14, and is disposed in the concave groove 14. The engagement clip 38 is provided so as to be connectable to the anchoring member 16 provided at the corresponding portion of the recessed groove of the pad member 10 and engages with the locking member 20 provided on the skin member 12. Therefore, the engagement of the engagement clip 38 and the locking member 20 restricts the relative movement between the locking member 20 and the third conductive portion 28, and the third conduction of the film-like main body 23 by the contact with the locking member 20. The portion 28 can be prevented from being damaged, and the locking member 20 is connected to the anchoring member 16 by the fixing ring 18, whereby the third conducting portion 28 is indirectly engaged with the anchoring member 16, It is possible to prevent the conductive portion 28 from leaving the concave groove 14.

The engaging member 20 is detachably attached to the film-like main body 23, and the locking member 2 is separated from the locking member 20 provided on the skin member 12.
Engage with zero. Therefore, the third conducting portion 28 of the film-like main body 23 is held at a predetermined interval with respect to the locking member 20, and the skin member 12, the film-like main body 2 is caused by the seating operation of the occupant.
3 and the pad member 10 are pressed, the locking member 20 and the third conductive portion 28 of the film-like main body 23 do not rub against each other, and the third conductive portion 28 can be prevented from being disconnected due to the rub. it can.

Further, the attachment portion 40 of the engagement member 20 has a holding structure that prevents and holds the third conduction portion 28 of the film-like main body 23. Therefore, in addition to the engagement member 20 being detachable from the conduction portion 28, the third conduction portion 28 attached to the attachment portion 40 by this holding structure.
Can be easily removed.

Further, as shown in FIGS. 10 and 11, the film-like main body 23 is formed by the fitting protrusion 58 provided in the upper attachment member 54 a and the fitting hole 60 provided in the lower attachment member 54 b.
The engagement structure is configured by deforming and sandwiching a part of the bending deformation portion 36 of the above. Thereby, after the film-like main body 23 is attached to the vehicle seat 2, it is possible to prevent the respective contacts A to D from deviating from the set detection positions on the vehicle seat 2.

As for the operation of the vehicle seat load detection device 8, when an occupant is seated on the seat 2, any one or more of the contacts A to D are turned on, and a current flows through a circuit formed by the membrane switch 22.
Based on the seating detection signal based on the current, the ECU determines that a person is seated on the seat cushion 1 (there is a load load exceeding a specified level). Thereby, for example, the operation of the airbag apparatus is made possible, or a warning that the seat belt is not worn is issued.

Next, a second embodiment in which the seat detection device for a vehicle seat according to the present invention is applied to a vehicle seat will be described with reference to the drawings. In the present embodiment, as shown in FIG. 13, an exposed portion 68 that is partially exposed from the pad member 10 is provided by removing a part of the pad member 10 that faces the extending anchoring member 16. The holding clip 70 as an engaging member that engages the exposed anchoring member 16 is provided, and the bending deformation portion 36 of the film-like main body 23 is engaged with the anchoring member 16 by the holding clip 70. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

As shown in FIGS. 14 and 15, the holding clip 70 is made of, for example, a hard resin and is formed in a U-shaped cross section so as to sandwich the bending deformation portion 36 of the film-like main body 23, and the mounting portion 7.
2 is provided with an engaging portion 74 that protrudes downward on the lower surface of 2 and engages with the anchoring member 16 of the pad member 10. The shape of the attachment portion 72 is the same as that of the attachment portion 40 of the first embodiment, and the retaining portion 44 is similarly provided. The engaging portion 74 of the holding clip 70 protrudes from the lower surface of the mounting portion 72 according to the length for separating the anchoring member 16 and the film-like main body 23, and is supported by the supporting portion 76 to support the pad member 10. A gripping portion 78 for inserting and gripping the anchoring member 16 from the opening at the lower end, and an insertion guide portion 80 provided at the opening and formed so that the spacing between the edges facing downward is gradually increased. . The bent deformation portion 36 of the film-like main body 23 is fitted into the attachment portion 72, and the anchor member 16 exposed by the exposed portion 68 from which the pad member 16 is partially removed is engaged with the engaging portion 74 of the holding clip 70. As shown in FIG. 13, the surface of the bending deformation portion 36 provided on the third conducting portion 28 of the film-like main body 23 on the side opposite to the locking member 20 is separated from the anchoring member 16. Hold in the state.

Next, attachment of the vehicle seat load detection device in the second embodiment will be described below. First, the contacts A to D of the membrane switch 22 are arranged at a predetermined detection position on the surface of the pad member 10 of the cushion portion 4 of the vehicle seat 2 and temporarily positioned. When the third conductive portion 28 crosses the groove 14, the bending deformation portion 3 is formed by bending and deforming the portion inserted into the groove 14.
6 is formed, and the holding clip 70 is sandwiched between the bending deformation portions 36 so that the engaging portions 74 are on the lower side. Next, the holding clip 70 holding the bending deformation portion 36 of the film-like main body 23 is inserted into the concave groove 14 (the anchoring member 16 is exposed by the exposed portion 68), and the holding clip 7 is inserted.
The zero engaging portion 74 is engaged with the anchoring member 16 and held. Subsequently, the back surface of the bending deformation portion 36 is attached to the side wall portion of the concave groove 14. Next, each contact point A to D is positioned and fixed at a predetermined detection position by sticking a portion of the conductive portion that does not cross the concave groove 14 of the film-like main body 23 to the seating surface side surface of the pad member 10.

Next, for the skin member 12, the portion where the locking member 20 is fitted is inserted into the concave groove 14,
The anchoring member 16 of the pad member 10 and the locking member 20 of the skin member 12 are connected by the fixed ring 18 at the left and right exposed portions 52 that are separated from the center in the left-right direction of the cushion portion 4.

According to the vehicle seat load detection device configured as described above, the plurality of detection portions (contacts A to D) of the film-like main body 23 are provided in contact with the seating side surface of the pad member 10, and the film-like main body is provided. 23 is a portion where the conductive portion is formed (third conductive portion 28), and the concave groove 1 of the pad member 10.
4 so that the holding clip 70 provided in a portion crossing the center of the pad member 10 is accommodated in the concave groove 14 and the detection portions (contact points A to D) are arranged on the seating side surface of the pad member 10. With the main body 23 being bent and deformed, the holding clip 70 is engaged with the anchoring member 16. Therefore, each detection part (contacts A to D) is set on the vehicle seat 2 when the third conduction part 28 of the film-like main body 23 floats in the groove 14 or is detached from the groove 14. It is possible to prevent deviation from the detection position.

Further, the holding clip 70 having an engaging portion 74 that engages with the anchoring member 16 of the pad member 10.
Is attached to the third conduction portion 28 of the membrane switch 22 by sandwiching the bending deformation portion 36 by the attachment portion 72. As described above, the engaging portion 74 is easily attached to an arbitrary position of the bending deformation portion 36 by the attaching portion 72. Therefore, at the time of attachment, the contact points A to A of the membrane switch 22 are first detected at the detection positions on the vehicle seat 2. Even when the mounting operation is performed after positioning with D being matched, by adjusting the position held by the mounting portion 72 so as to match the position of the corresponding anchoring member 16 in the concave groove 14, it is easy and accurate. The membrane switch 22 can be disposed on the vehicle seat 2.

Next, a third embodiment in which the vehicle seat seating detection apparatus according to the present invention is applied to a vehicle seat will be described with reference to the drawings. In the present embodiment, as shown in FIG. 16, the bending deformation portion 36 of the film-like main body 23 is detachably engaged with the anchoring member 16 from the skin member side, and the bending deformation portion 36 is engaged with the anchoring member side. The first engaging portion 82 that separates the surface of the skin member 16 from the anchoring member 16 and the engaging member 20 of the skin member 12 are detachably engaged from the opposite side of the skin member 12, and the bending deformation portion 36 is engaged.
The first embodiment and the second embodiment in that it is held by an engagement holding clip (engagement member) 88 having a second engagement portion 84 that separates the surface of the engagement member side from the engagement member 20. It differs from the form. As shown in FIGS. 17 and 18, the attachment portion 86 of the engagement holding clip is the same as the attachment portions 40 and 72 in the first and second embodiments, and the second engagement portion 84 is the first embodiment. Since the first engaging portion 82 is the same as the engaging portion 74 in the second embodiment, the description thereof is omitted. According to the engagement holding clip 88, the film-like main body 2
3 can be held separately from the anchoring member 16 and the locking member 20, and the locking member 20 can be engaged with the anchoring member 16, and the skin member 12 can be engaged with the pad member 10. It can be used instead of the fixed ring 18 to be fixed to.

In the above embodiment, the mounting portion 86 is made of the same hard resin as in the first embodiment and is integrally formed in a U shape. However, the present invention is not limited to this, and for example, as shown in FIG. Similarly to the other example of the first embodiment, the upper and lower mounting members 54a and 54b may be connected by a spring member 56 that biases in the clamping direction.

Next, attachment of the vehicle seat load detection device according to the third embodiment will be described below. First, the contacts A to D of the membrane switch 22 are arranged at a predetermined detection position on the surface of the pad member 10 of the cushion portion 4 of the vehicle seat 2 and temporarily positioned. When the third conductive portion 28 crosses the concave groove 14, the bent portion 36 is bent to form the bending deformation portion 36, and the holding engagement clip 88 is engaged with the bending deformation portion 36 in the first engagement. The attachment portion 86 is clamped so that the portion 82 is on the bottom and the second engagement portion 84 is on the top. Next, the film body 23
The holding engagement clip 88 sandwiching the bending deformation portion 36 is inserted into the concave groove 14 (the anchoring member 16 is exposed by the exposed portion 68), and the first engagement portion 82 of the holding engagement clip 88 is inserted. The mooring member 16 is engaged and held. Subsequently, the back surface of the bending deformation portion 36 is attached to the side wall portion of the concave groove 14. Next, each contact point A to D is positioned and fixed at a predetermined detection position by pasting the portion of the conductive portion that does not cross the concave groove 14 of the film-like main body 23 to the surface of the pad member 10. Next, with respect to the skin member 12, the portion where the locking member 20 is fitted is inserted into the groove 14, and the locking member 20 is held and engaged with the portion of the skin member 12 facing the film-like main body 23. The second engagement portion 84 of 88 is fitted and held. Thus, the locking member 20 of the skin member 12 is engaged with the anchoring member 16 of the pad member 10 without using the fixing ring 18 dedicated for fixing.

According to the vehicle seat load detection device configured as described above, the plurality of detection portions (contacts A to D) of the film-like main body 23 are provided in contact with the seating side surface of the pad member 10, and the film-like main body is provided. 23 is a portion where the conductive portion is formed (third conductive portion 28), and the concave groove 1 of the pad member 10.
4 so that the holding engagement clip 88 provided in a portion crossing the center 4 is accommodated in the concave groove 14, and the detection portions (contact points A to D) are arranged on the seating side surface of the pad member 10. The holding engagement clip 88 is engaged with the anchoring member 16 and the locking member 20 with the film-like main body 23 being bent and deformed. Therefore, the locking member 20 provided on the skin member 12 and the anchoring member 16 provided on the pad member 10 can be engaged, and the role of fixing the skin member 12 to the pad member 10 at the concave groove corresponding portion. You can have it. As a result, a dedicated fixture for locking the skin member 12 conventionally used to the anchoring member 16 of the pad member 10 can be omitted, and the number of parts can be reduced to reduce the cost.

Further, the holding engagement clip 88 having the first engagement portion 82 and the second engagement portion 84 is configured such that the bending deformation portion 36 is sandwiched by the attachment portion 86 to the third conduction portion 28 of the film-like main body 23. Mounted. The first engagement portion 82 and the second engagement portion 84 are provided integrally with the attachment portion 86. As described above, the first engaging portion 82 is easily attached to an arbitrary position of the bending deformation portion 36 by the attaching portion 86, so that the position held by the attaching portion 86 is the corresponding anchoring member 16 in the concave groove 14.
By adjusting so as to match the position of the membrane switch 22, the membrane switch 22 can be accurately arranged, and the second engaging portion 84 integrated with the second engagement portion 84 can be bent from the locking member 20 of the skin member 12 with a small number of parts. The third conductive portion 28 can be protected by separating the deformable portion 36.

In addition, although the four contacts A to D serving as the membrane switch are arranged in a rectangular shape, the present invention is not limited to this. For example, as shown in FIGS. The contacts A to D as the portions may be arranged in a straight line and connected in a rod shape by the conducting portion 90. By adopting a simple configuration such as a rod, an inexpensive seating detection device can be obtained, and the production cost can be reduced.

Moreover, although the membrane switch 22 has comprised the four contact points A-D as a detection part, the number of detection parts is not limited to four, What is necessary is just two or more.

Further, in the embodiment, the bending deformation portion 36 is set between the adjacent detection portions (between the contact points A and B and the contact points C and D), but is not limited to this, for example, the connector 32 (external output). Part 3
It may be set anywhere as long as it corresponds to the concave groove in the conducting part, such as between 3) and the detecting part (contacts C and D).

Further, in the above-described embodiment, the engagement clip 38, the holding clip 70, and the holding engagement clip 88 as the engagement members are not necessarily configured separately from the membrane switch 22 (film-like main body). It may be configured integrally with the membrane switch 22 by molding or the like. In this case, the attachment portion 40 in the engagement clip 38,
The attachment portion 72 in the holding clip 70 and the attachment portion 86 in the holding engagement clip 88 may be omitted.

Thus, the specific configuration described in the above-described embodiment is merely an example of the present invention, and the present invention is not limited to such a specific configuration. Various embodiments can be adopted without departing from the scope.

DESCRIPTION OF SYMBOLS 2 ... Vehicle seat, 8 ... Load detection apparatus, 10 ... Pad member, 12 ... Skin member, 14 ... Groove, 16 ... Mooring member, 20 ... Locking member, 22 ... Membrane switch, 23 ... Film-like main body, 28 ... Conducting part / formation part (third conducting part), 36 ... bending deformation (bending deformation part), 38 ... engaging member (engaging clip), 40 ... mounting part, 42 ... engaging part, 44 ... retaining , 70... Engaging member (holding clip), 72... Mounting portion, 74... Engaging portion, 82 .. engaging portion (first engaging portion), 84.
... engaging part (second engaging part), 86 ... attaching part, 88 ... engaging member (holding engaging clip), 90 ...
Conducting part.

Claims (5)

Between the seating side surface of the vehicle seat pad member having a concave groove formed in a part and the skin member attached to the pad member so as to cover the seating side surface so as to cross the concave groove A plurality of detection units adapted to be laid, abutting on the seating side surface of the pad member to detect load information on the pad member, an external output unit outputting a load signal detected by the detection unit, and A flexible film-like main body provided with a conducting portion that conducts between the plurality of detecting units or between the detecting unit and the external output unit;
An anchoring member provided at a portion of the film-like main body where the conductive portion is formed and crossing the concave groove, and provided at the concave groove corresponding portion of the pad member, and the skin being connectable to the anchoring member An engaging member detachably engageable with at least one of the locking members provided on the member;
A vehicle seat load detection device comprising: In Claim 1, The said engagement member protruded from the attaching part which can be attached or detached with respect to the said film-like main body, and separated the said film-like main body with respect to the said anchoring member or the said locking member. A vehicle seat load detection device comprising an engagement portion that engages in a state. The vehicle seat load detection device according to claim 2, wherein the attachment portion has a holding structure that prevents the conduction portion from being detached. 4. The vehicle according to claim 2, wherein the attachment portion and the attachment portion of the attachment portion in the film-like main body have an engagement structure that engages with each other to regulate displacement. Load detection device for seats. A pad member having a recessed groove formed in a part of the seating side surface; a skin member attached to the pad member so as to cover the seating side surface; and a portion corresponding to the groove in the pad member. The vehicle seat load detection device according to any one of claims 1 to 4, wherein the vehicle seat includes a mooring member and a locking member provided on the skin member so as to be connectable to the mooring member. The mounting structure of
The engagement member in a state in which the film-shaped main body is bent and deformed so that the engagement member is housed in the concave groove and the detection portion is disposed on the seating side surface of the pad member. The vehicle seat load detecting device mounting structure is characterized in that at least one of the mooring member and the locking member is engaged.

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