JP2005268169A - Load detection switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible sheet-like load detection switch having a reliable and stable switching function under load.
One contact circuit member is configured by disposing a conductive member having a contact region on one main surface of a flexible insulating member, and the other contact circuit member is formed by a flexible insulating member. 9, a conductive member having a contact region 11 is arranged on one main surface. A frame-like insulating spacer 6 interposed between the contact circuit members 1 and 8 has a long space 7 in the frame. When there is no load, the contact regions 4 and 11 are provided. The switch off is maintained with an interval. When the load is applied, the flexible insulating members 2 and 9 are deflected toward the long space 7, and the contact regions 4 and 11 having a shape corresponding to the space are brought into contact with each other with a long contact surface to be switched on.
[Selection] Figure 1

Description

  The present invention relates to a load detection switch, and more particularly, to a plate, film or sheet load detection switch configured by flexible circuit board technology.

  For example, in an automobile seat belt wearing system, a seat-like load in an off state when no load is applied to the seat skin back side of the seat for the purpose of ensuring that a seat belt is worn when a user is seated on the seat. A detection switch is built in, and a mark for displaying whether the seat belt is worn / not worn by electrical blinking is provided on a part of the electrical display panel located in front of the seat. When the seat is not seated, the mark is in an unlit state. When the seat is seated, the switch is turned on by a user's load, and the mark is lit to indicate a seat belt not worn state. When the seat belt is worn after sitting, the mark is turned off by another seat belt control system so that the user can confirm that the wearing is completed.

  As this type of load detection switch, a conventional technique for providing a plate-like, film-like or sheet-like one is known (for example, see Patent Document 1). This conventional load detection switch includes a first circuit wiring film in which a wiring layer is provided on a flexible insulating film, a second circuit wiring film in which a wiring layer is provided on a flexible insulating film that is paired with the first circuit wiring film, and these Flexible insulating spacers interposed between these films, and these films and the spacers are bonded to each other with an adhesive so as to be integrated into a film shape as a whole. The wiring layers of the wiring films are arranged facing each other so as to face the spacer side, and the wiring patterns in the facing state are the same or substantially the same. Further, the spacer is formed with through holes reaching between the two circuit wiring films at a plurality of locations along the wiring layer, and the upper wiring layers are electrically switched at respective portions facing the through holes. It has a part which functions as a contact area.

By the way, each of the above through holes has a circular shape having a diameter slightly larger than the wiring layer width. Therefore, in this prior art, a structure having jumping contact areas at a plurality of positions in each wiring layer is provided, and a portion between the contact areas in the same wiring layer functions as a wiring area for electrically connecting adjacent contact areas. Therefore, when viewed from the whole wiring layer, the area of the contact region occupying the wiring layer is relatively small.
Japanese Patent No. 29099961 (Japanese Patent Laid-Open No. 9-315199)

  By the way, in the conventional film-shaped load detection switch, since the hole diameter of the through hole of the spacer that defines the switching function region is small, the first and second wiring films sandwich the through hole when a load due to seating or the like is applied. There is a problem that the respective contact areas cannot sufficiently contact each other and it is difficult to perform a reliable switching function.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a load detection switch having a reliable and stable switching function.

  According to a first aspect of the present invention, there is provided a load detecting switch having a first conductive region having a first contact region and a first terminal region electrically connected to the region on one main surface of a flat first flexible insulating member. A first contact circuit member configured by disposing a conductive member, and a second contact region and a second terminal region electrically connected to this region on one main surface of the flat second flexible insulating member. Between a second contact circuit member configured by disposing a second conductive member and the first and second contact circuit members disposed facing each other so that the first and second conductive members face each other A frame-like insulating spacer interposed between the first and second contact regions arranged opposite to each other in a space surrounded by the frame of the spacer. It is formed in the shape corresponding to.

  According to a second aspect of the present invention, in the load detection switch according to the first aspect, the space of the spacer and the first and second contact regions are all formed in a single elongated shape, and these are mutually connected. It is characterized by substantially the same shape.

According to a third aspect of the present invention, in the load detection switch according to the first or second aspect, the spacer has a frame portion that divides the space into a plurality of portions.
According to a fourth aspect of the present invention, there is provided a load detection switch comprising: a first conductive member having a first contact region and a first terminal region electrically connected to this region on one main surface of a flat plate-like first flexible insulating member; A first contact circuit member configured by disposing a conductive member, and a second contact region and a second terminal region electrically connected to this region on one main surface of the flat second flexible insulating member. Between a second contact circuit member configured by disposing a second conductive member and the first and second contact circuit members disposed facing each other so that the first and second conductive members face each other A frame-shaped insulating spacer interposed in the space, and a space surrounded by the frame of the spacer is formed in a planar shape combined so that a plurality of long spaces intersect, the first and first Each of the two contact areas is a long combination shape corresponding to the planar shape of the long space. And it is characterized in that is.

  According to a fifth aspect of the present invention, there is provided a load detection switch comprising: a first contact circuit member in which a first conductive member having a first contact region is disposed on one main surface of a flat first flexible insulating member; A second conductive member having a second contact region and a second terminal region electrically connected to this region is disposed on one main surface of the flat plate-like second flexible insulating member, and the second flexible member is provided. A second contact in which a third conductive member having a third contact region disposed corresponding to the second terminal region and a third terminal region electrically connected to the second contact region is disposed on one main surface of the insulating member. A circuit member, and a frame-like insulating spacer interposed between the first and second contact circuit members so that the first conductive member faces the second and third conductive members The space surrounded by the frame of the spacer is for switching operation of the first, second and third contact regions And the second and third terminal regions installed on one main surface of the second flexible insulating member extend outside the frame of the spacer in parallel with each other. To do.

  According to a sixth aspect of the present invention, in the load detection switch according to the first, second, or fifth aspect, the space of the spacer has a dumbbell-shaped planar shape.

  According to a seventh aspect of the present invention, in the load detection switch according to the fifth aspect, the space of the spacer and the first contact region are formed in an elongated shape having substantially the same shape, and the second conductive member. The third conductive member extends in the longitudinal direction along the long space of the spacer.

  According to the present invention, since the spacer interposed between the first contact circuit member and the second contact circuit member is formed in a frame shape, the space in the frame can be configured in a wide area, Compared to the conventional point contact type, the contact area of each contact area between the first and second contact circuit members at the time of loading can be made large, so that the switching operation at the time of loading is performed reliably, and the peripheral device There is an effect that reliable on / off signal transmission is possible.

  Hereinafter, first to fifth embodiments of a load detection switch according to the present invention will be described with reference to FIGS. 1 to 9.

  1 is a plan view of a load detection switch showing a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is an exploded view of the configuration of the load detection switch. It is a top view of each member. First, each member will be described with reference to FIG. In FIG. 3A, reference numeral 1 denotes a first contact circuit member. The first conductive member 3 is formed on one main surface of the long flat plate-like first flexible insulating member 2 by, for example, a circuit printed wiring technique. It is formed by depositing and arranging. Since the main surface of the first flexible insulating member 2 is turned upside down, the first conductive member 3 is indicated by a broken line. The first conductive member 3 has a wiring pattern shape as shown in the figure as a whole, and has a first contact region 4 and a first terminal region 5 electrically connected thereto. The first contact region 4 has a rectangular shape which is a long shape arranged along the longitudinal direction of the first flexible insulating member 2 having a long flat plate shape. The first terminal region 5 has a strip shape (thin line shape), is continuous with one end portion of the first contact region 4, and extends in the direction of one end edge of the first flexible insulating member 2.

  Next, in FIG. 3B, reference numeral 6 denotes an insulating spacer made of a flexible resin. The spacer 6 has a long frame shape by providing a long space 7 penetrating in the thickness direction. Is formed. In FIG. 3C, reference numeral 8 denotes a second contact circuit member, and the second conductive member 10 is formed on one main surface of the long flat plate-like second flexible insulating member 9 by, for example, a circuit printed wiring technique. It is formed by depositing and arranging. Here, since one main surface of the second flexible insulating member 9 is in a state of facing the paper surface, the second conductive member 10 is indicated by a solid line. The second conductive member 10 has a wiring pattern shape as illustrated as a whole, and includes a second contact region 11 and a second terminal region 12 electrically connected to the second contact region 11. The second contact region 11 has a rectangular shape which is a long shape disposed along the longitudinal direction of the long flat plate-like second flexible insulating member 9. The second terminal region 12 has a strip shape (thin line shape), extends in the direction of one end edge of the second flexible insulating member 9 continuously to one end portion of the second contact region 11, and the first terminal region 5. Are arranged in parallel with each other as shown in the figure.

  And the load detection switch in this embodiment has the same (b) spacer 6 overlaid on the second contact circuit member 8 in FIG. 3 (c), and the first contact circuit member 1 in (a). Are stacked and bonded together to form a shape as shown in the plan view of FIG. 1 and the cross-sectional view of FIG. Here, the first contact region 4 and the second contact region 11 are spaced at a predetermined interval in a state where the surfaces of the first contact region 4 and the second contact region 11 face each other in the long space 7 of the spacer 6 as shown in FIG. Is held in. The terminal areas 5 and 12 are for electrical connection with external terminals of an external connector (not shown), and are used as internal terminals of the load detection switch, but connect the contact area and the external terminals. It can also be used as an electrically conductive path. In this embodiment, the long flat plate-like first flexible insulating member 2 and second flexible insulating member 9 are each formed in a rectangle having a long side of about 20 cm and a short side of about 2 cm. .

  Next, a switching function when the load detection switch is mounted on, for example, a car seat and used as a seating detection switch for seat belt wearing confirmation will be described. When not seated, the first contact region 4 and the second contact region 11 are electrically separated from each other at a predetermined interval in the long space 7 of the spacer 6. As a result, the first flexible insulating member 2 and the second flexible insulating member 9 having the long flat plate shape are bent, and the first contact region 4 and the second contact region 11 are brought into contact with each other by pressing. , Is turned on electrically. With this ON, it is possible to display the seat belt non-wearing state after sitting on the seat belt wearing / non-wearing indicator on the electrical display panel in front of the seat. When the seating is released, the first and second flexible insulating members 2 and 9 are restored, and the contact areas are separated and returned to switch-off.

  In such a switching operation, the contact areas 4 and 11 have the same or substantially the same rectangular shape as the long space 7, so that the above-described conventional contact structure is a so-called point contact type. On the other hand, surface contact with a very large area can be obtained, and the switch-on operation is reliably performed. Even if there is a shift in the mounting position of the load detection switch on the seat, or even if there is a shift in the seating position with respect to this switch, the line contact or the surface contact state in a wider range is maintained as compared with the conventional case. The switch-on operation can be reliably obtained.

  As the first conductive member 3 and the second conductive member 10, for example, a carbon paste printed on a silver paste is used, and the first flexible insulating member 2 and the second flexible insulating member 9 are used. For example, a resin such as polyethylene naphthalate (PEN) or polyethylene terephthalate (PET) is used.

  Next, a manufacturing method of the load detection switch will be described. One flexible insulating sheet is prepared, and a wiring pattern in which a plurality of the first contact circuit members 1 are juxtaposed is formed on the sheet by a printed wiring technique. Also, the other flexible insulating sheet is prepared, and a wiring pattern in which a plurality of the second contact circuit members 8 are juxtaposed is formed on the sheet by a printed wiring technique. Further, a flexible insulating sheet for spacers is prepared, and a long space 7 is formed on this sheet by the number of the first and second contact circuit members that are paired with each other. Next, the three flexible insulating sheets are overlapped and bonded to each other so that the first contact circuit members and the second contact circuit members face each other in an elongated space. Thereafter, the flexible insulating sheet is cut for each contact circuit member unit, and the individual load detection switches are taken out. In this embodiment, since the load detection switch has a rectangular shape (strip shape), an inexpensive detection switch can be supplied without waste of material by the manufacturing method.

  Next, convenience and the like when the load detection switch is attached to a car seat, for example, will be described. The load detection switch has a more reliable switching operation than conventional ones, and the shape of the load detection switch is a rectangular or strip-shaped compact shape of about 20 cm × 2 cm square as described above, so that the handling is simple. In addition, the degree of freedom in selecting the attachment position such as the position corresponding to the user's buttocks or thighs of the seat and the backrest position of the seat is increased. Also, when the seat is placed at the user's buttocks contact position, taking into account that there are wrinkles in the user's seating posture and there are those who sit deeply or who sit shallowly, It is good to arrange | position so that direction may become the diagonal direction of a substantially square seat. According to such a diagonal arrangement, one end side and the other end of the load detection switch receive a load corresponding to the deep position and the shallow position, respectively. A relatively wide range of sensing and switching functions can be performed.

  FIG. 4 is a plan view of a load detection switch showing a second embodiment of the present invention, FIG. 5 is a sectional view taken along line BB in FIG. 4, and FIG. 6 is an exploded view of the configuration of the load detection switch. It is a top view of each member. First, each member will be described with reference to FIG. In FIG. 6A, reference numeral 1A denotes a first contact circuit member, and the first conductive member 3A is formed on one main surface of the long flat plate-like first flexible insulating member 2 by, for example, a circuit printed wiring technique. It is formed by depositing and arranging. Here, the main surface of the first flexible insulating member 2 is shown upside down. Further, the first conductive member 3A does not have the first terminal region 5 in the first embodiment, and is treated as the same or equivalent to the first contact region 4 as illustrated. The first contact region 4 has a rectangular shape (strip shape) which is a long shape disposed along the longitudinal direction of the first flexible insulating member 2 having a long flat plate shape.

  The insulating long frame spacer 6 made of a flexible resin shown in FIG. 6B has a long space 7 penetrating in the thickness direction as in the first embodiment. Have In FIG. 6C, reference numeral 8A denotes a second contact circuit member, which is formed on a part of one main surface of the long flat plate-like second flexible insulating member 9 by, for example, circuit printed wiring technology. It is formed by adhering and arranging the sexual member 10A. Here, one main surface of the second flexible insulating member 9 is shown in a state where it faces the paper surface. Further, as shown in the drawing, the second conductive member 10A is formed of a comb-like wiring pattern having a second contact region 11A and a second terminal region 12A electrically connected to the second contact region 11A. Further, the third conductive member 13 is deposited on the other part of the main surface of the second flexible insulating member 9 by the circuit printed wiring technique simultaneously with the formation of the second conductive member 10A. As shown in the figure, the third conductive member 13 is formed of a comb-like wiring pattern having a third contact region 14 and a third terminal region 15 electrically connected thereto. The second conductive member 10A and the third conductive member 13 are opposed to each other so that the comb teeth 11A and 14 are engaged with each other while being spaced apart from each other. The comb teeth 11A and 14 are alternately arranged along the longitudinal direction of the second flexible insulating member 9, and are formed in a long shape as shown in the figure. The second terminal region 12A has a strip shape (thin line shape) and extends in the direction of one end edge of the second flexible insulating member 9 continuously to one end portion of the second contact region 11A. Are arranged in parallel with each other as shown in the figure. Reference numerals 16 and 17 in the drawing are contact terminals for electrical and mechanical connection with external terminals of the external connector, and are connected to the second terminal region 12 and the third terminal region 15 respectively. Both the spacer 6 and the first flexible insulating member 2 are shorter than the length of the second flexible insulating member 9 and are shaped to expose the contact terminals 16 and 17 when they are stacked. .

  In the load detection switch in this embodiment, the spacer 6 of FIG. 6B is overlaid on the second contact circuit member 8A of FIG. 6C, and the first contact circuit member 1A of FIG. 4 are bonded together and integrated to form a shape as shown in the plan view of FIG. 4 and the cross-sectional view of FIG. Here, the second contact region 11A and the third contact region 14 are spaced apart from the first contact region 4 at a predetermined interval in the long space 7 of the spacer 6, similarly to the configuration shown in FIG. 6 is held. The long flexible plate-like second flexible insulating member 9 is formed in a rectangle having a long side of about 20 cm and a short side of about 2 cm, as in the first embodiment.

  In this load detection switch, the switching operation is basically the same as that in the first embodiment, but the first contact region 4 includes a second contact region 11A and a third contact connected to an external circuit. The difference is that it functions as a short bar switch for the region 14. That is, at the time of seating, the long flat plate-like first flexible insulating member 2 and the second flexible insulating member 9 are bent by the pressing force at that time, and the first contact region 4 is the second contact region. 11A and the third contact region 14 are brought into contact with each other in a bridging manner, and the switch is turned on to display the seat belt non-wearing state after sitting.

  In such a load detection switch, the contact areas 4, 11A and 14 have the same or substantially the same rectangular pattern as the long space 7 as a whole, and therefore, as in the first embodiment. An extremely large surface contact can be obtained, and the switch-on operation can be reliably obtained. Further, the second conductive member 10A and the third conductive member 13 constituting the second contact region 11A and the third contact region 14 are formed on one main surface of the common second flexible insulating member 9. Further, the connector terminals 16 and 17 are on the same plane, and a simple terminal structure for the external connector can be obtained.

  Although the second conductive member 10A and the third conductive member 13 are formed in a comb shape, the shape of the comb teeth is not limited to a rectangular strip, and may be appropriately set to a sawtooth shape, a gentle wave tooth shape, or the like. By selecting, it is possible to adjust the contact area or contact sensitivity between the contact regions according to the pressure distribution.

  FIG. 7 is a plan view showing an improved shape of the spacer 6 for explaining a third embodiment of the load detection switch of the present invention.

  A long space 7A surrounded by the long frame-shaped spacer 6 in FIG. 7 has a so-called dumbbell shape having a narrow space region 71 at the center and wide space regions 72 and 73 at both ends of the center. Is formed. The boundaries of these spatial regions are indicated by broken lines in the figure. When used for seating detection as described above, the load distribution to the load detection switch at the time of seating is not necessarily constant, and the load applied to the center of the load detection switch tends to be larger than both ends. Therefore, in this embodiment, the width of the space regions 72 and 73 is increased so that the flexible insulating members 2 and 9 are easily bent at this portion, so that the contact regions are in contact with each other at both ends of the center portion. Easy to use. Conversely, when used in a place where the load distribution at both end portions is expected to be larger than the central portion, the width of the central portion of the long space 7A is made larger than both end portions to increase the load sensitivity. By dulling the load sensitivity at both ends, uniform and reliable contact between the contact areas of the entire switch at the time of sitting can be obtained. Accordingly, in consideration of the load distribution, the planar shape of the elongated space 7 may be a drum shape or an elliptical shape, and the load distribution state can be achieved by variously devising the shape of the spacer 6 as described above. A suitable load detection switch can be provided.

  Although the flexible insulating member and the conductive member of the load detection switch in this embodiment are not shown in the figure, it is easy to replace the spacer 6 shown in FIG. 7 as the spacer in the first and second embodiments. A load detection switch can be configured.

  FIG. 8 is a plan view showing an improved shape of the spacer 6 for explaining the fourth embodiment of the load detection switch of the present invention.

  In this example, the spacer 6 is formed in a substantially H-shaped plane frame as a whole, and the space 7B surrounded by the frame is also formed on a substantially H-shaped plane, but the broken line in FIG. As shown in FIG. 2, the spacer 6 and the space 7B both have a combination shape having a long shape as a basic unit. That is, the space 7B is orthogonal to the long space 74, the long space 75 continuous perpendicular to the long space 74, and both sides of the space 75, as indicated by the broken lines in the figure as an example of the division. And a continuous long space 76, 77. Although the load detection switch is not shown, the first and second flexible insulating members respectively bonded to both surfaces of the frame-like spacer 6 and the first formed on each main surface of these insulating members. The first and second conductive members are included. Each contact region of the first and second conductive members also has a combined shape having a long shape as a basic unit in the same manner as the spacer space 7B, and the planar shape of the long spaces 74, 75, 76, and 77 They are almost the same or similar.

  In such a load detection switch, each contact region of the spacer 6 and the first and second conductive members has a plurality of combination shapes with a long shape as a basic unit, and has a long element extending in a plurality of directions. Therefore, even if the load distribution at the time of sitting is uneven, a large contact area in the ON state can be secured, and a reliable switching operation can be obtained.

  Further, as described in the third embodiment, each of the long spaces 76 and 77 may have both end portions wider than the central portion. The end opposite to the side in contact with 75 may be wide.

  FIG. 9 is a plan view of a load detection switch showing a fifth embodiment of the present invention. In this example, a description will be given of a modification of the load detection switch of the second embodiment shown in FIG. The various members constituting the switch of this embodiment shown in FIG. 9 are indicated by the same reference numerals as in FIGS. 4 to 6 corresponding to the various members of the second embodiment. The first and second flexible insulating members 2 and 9, the spacer 6 and its space 7, the first contact region 4, the second and third contact regions 11A and 14 are all formed in an elongated shape, and the connector terminal 16 And a long portion X having a shape in which a tip portion opposite to 17 is extended in a right angle direction in the same plane, and a long portion Y having a shape in which a tip portion of the portion X is extended in a right angle direction in the same plane. It has the structure which has.

  The third to fifth embodiments provide a shape that can obtain a more reliable switching operation corresponding to various conditions of use place, load distribution, and the like.

  Next, as a further modification, the shape of the contact region in each of the first to fifth embodiments is a long shape, but is divided into a plurality of long shapes parallel to the long side. It is good also as a shape. In this case, the spacer is formed in a lattice frame shape such that the frame portion faces these division positions, and the space in the frame is divided into a plurality of elongated shapes. In this example, the contact area has a larger contact area than that of the conventional point contact, and it is possible to obtain a reliable switching operation, but rather, the number of divisions is adjusted to flex the flexible insulating member at the spacer space position. By adjusting the degree, it is possible to devise so that the switch-on can be performed with better timing at the time of loading. In addition, rather than stopping the spacer in a single large frame shape, it is possible to increase the strength of the spacer frame and facilitate handling during assembly by forming a plurality of lattice frame shapes as described above.

  In the first to fifth embodiments, when an air vent hole (not shown) communicating with the long space is provided in at least one of the first and second flexible insulating members and the spacer, a load is applied. These flexible insulating members are easily turned on because they are easily bent, and when the load is released, the flexible insulating members are easily restored so that they are quickly turned off. Can be increased.

  The terms flat, film, and sheet used in the present invention are all flexible to the load, and are used to express a relatively thin material that can be restored when the load is removed. In effect, it is treated as a synonym.

It is a partially cutaway top view which shows the load detection switch which concerns on the 1st Embodiment of this invention. FIG. 2 is an enlarged cross-sectional view showing a load detection switch as viewed in the direction of an arrow, taken along a line AA in FIG. It is a top view which decomposes | disassembles and shows the load detection switch which concerns on the 1st Embodiment of this invention. It is a top view which shows the load detection switch which concerns on the 2nd Embodiment of this invention. FIG. 3 is a cross-sectional view showing the load detection switch as viewed in the direction of the arrow, taken along the line BB in FIG. 2. It is a top view which decomposes | disassembles and shows the load detection switch which concerns on the 2nd Embodiment of this invention. It is a top view which shows the spacer of the load detection switch which concerns on the 3rd Embodiment of this invention. It is a top view which shows the spacer of the load detection switch which concerns on the 4th Embodiment of this invention. It is a partially notched top view which shows the load detection switch which concerns on the 5th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st contact circuit member 2 1st flexible insulating member 3 1st electroconductive member 4 1st contact area 5 1st terminal area 6 spacer 7 elongate space 8 2nd contact circuit member 9 2nd flexible insulation Member 10 Second conductive member 11 Second contact region 12 Second terminal region 13 Third conductive member 14 Third contact region 15 Third terminal region

Claims (7)

A first contact circuit configured by disposing a first conductive member having a first contact region and a first terminal region electrically connected to the first contact region on one main surface of the flat first flexible insulating member. And a second conductive member having a second contact region and a second terminal region electrically connected to this region on one main surface of the member and a flat second flexible insulating member. A two-contact circuit member, and a frame-like insulating spacer interposed between the first and second contact circuit members disposed so as to face each other so that the first and second conductive members face each other. And the first and second contact regions arranged opposite to each other in a space surrounded by the spacer frame are formed in a shape corresponding to the planar shape of the space. Load detection switch to be used. 2. The load detection switch according to claim 1, wherein both the space of the spacer and the first and second contact regions are formed in a single elongated shape, and these are substantially the same shape. A featured load detection switch. 3. The load detection switch according to claim 1, wherein the spacer has a frame portion that divides the space into a plurality of portions. A first contact circuit configured by disposing a first conductive member having a first contact region and a first terminal region electrically connected to the first contact region on one main surface of the flat first flexible insulating member. And a second conductive member having a second contact region and a second terminal region electrically connected to this region on one main surface of the member and a flat second flexible insulating member. A two-contact circuit member, and a frame-like insulating spacer interposed between the first and second contact circuit members disposed so as to face each other so that the first and second conductive members face each other. A space surrounded by a frame of the spacer is formed in a planar shape combined so that a plurality of elongated spaces intersect, and the first and second contact regions are both planar surfaces of the elongated space. A load detection switch characterized by a long combination shape corresponding to the shape. A first contact circuit member in which a first conductive member having a first contact region is installed on one main surface of a flat first flexible insulating member, and a flat second flexible insulating member. A second conductive member having a second contact region and a second terminal region electrically connected to this region is disposed on the main surface, and the second terminal region is disposed on one main surface of the second flexible insulating member. A second contact circuit member provided with a third conductive member having a third contact region disposed corresponding to the third contact region and a third terminal region electrically connected to the third contact region, and the second and third conductive members A frame-like insulating spacer interposed between the first and second contact circuit members so that the first conductive member faces the space, and the space surrounded by the spacer frame is A space for switching operation of the first, second, and third contact regions is formed, and a main part of the second flexible insulating member Load detecting switch the second and third terminal regions placed above, characterized in that the are extended in parallel to each other to outside the frame of the spacer. 6. The load detection switch according to claim 1, 2, or 5, wherein the space of the spacer has a dumbbell-shaped planar shape. 6. The load detection switch according to claim 5, wherein the space of the spacer and the first contact region are formed in an elongated shape having substantially the same shape, and the second conductive member and the third conductive member are the spacer. A load detection switch that extends in a longitudinal direction along a long space of the.

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