JP2015072894A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable positioning an attachment part of a resistor upward of a holding member for holding an output terminal, and to enable easy attachment of the resistor even after the output terminal is buried in the holding member.SOLUTION: Extension parts 28a, 28b are formed by extending at least two out of a common stationary contact 25, a first switching stationary contact 26 and a second switching stationary contact 27 in a case 3 upper side of the holding member 2. Resistors R1, R2 are attached to attachment parts 29a1, 29b1, 29b2 each formed on a part of the extension parts 28a, 28b.

Description

  The present invention relates to a switch device, and more particularly, to a switch device capable of detecting problems such as disconnection and short circuit in a connection member such as an electric wire connected to an external device.

  2. Description of the Related Art Conventionally, in a switch device having first and second terminals in which a movable contact is moved by the operation of an operating body and the energization state is switched, a substrate is provided on which a resistor that conducts with the first and second terminals is mounted. A switch device is known in which a detection circuit is configured by inserting and connecting first and second terminals to through holes formed in the substrate. In this switch device, the first and second terminals are embedded and held in a lower case having an accommodating portion that opens upward. One end side of the first and second terminals is located in the housing portion of the lower case, and a contact portion is formed in sliding contact with the movable contact. The other end side protrudes from the lower surface portion of the lower case and the substrate. Yes. An electric wire is connected to the other end of each of the first and second terminals and used by being connected to an external device. (For example, see Patent Document 1)

  In this switch device, by detecting the resistance value of the detection circuit, it is possible to detect whether the connection between the external device and the electric wire is in a normal state or in a broken or short-circuit failure state.

JP 2011-146257 A

  However, in the above-described conventional switch device, one end side of the first and second terminals is located in the housing portion of the lower case, and is therefore surrounded by the side wall that forms the housing portion. Therefore, after embedding these terminals in the lower case, if you try to attach a resistor to one end, the side walls will be in the way and you will not be able to attach them easily. There was a problem that the attachment portion of the resistor could not be formed above the side case. Therefore, the board on which the resistor is mounted is attached to the other end of the terminal protruding from the lower part of the lower case, and the resistor and the board are arranged outside the case that covers the contact part of the switch device. Therefore, the switch device was getting bigger.

  The present invention has been made in view of such problems, and the resistor mounting portion can be positioned above the holding member that holds the output terminal, and the output terminal is embedded in the holding member. However, it aims at providing the switch apparatus which can attach a resistor easily.

  The switch device of the present invention includes a housing having a penetrating portion, a moving member provided with an operating portion exposed from the penetrating portion, an urging member that returns the moving member to an initial state before operation, and the moving member A movable contact that is operated by the movement of the movable contact, a common fixed contact that is always in contact with the movable contact, and the movable contact that is in contact with the movable contact in an initial state in which the operation unit is not operated and that is operated with the operation unit. And a second switching fixed contact that is in non-contact with the movable contact in an initial state where the operation unit is not operated and contacts the movable contact in accordance with an operation to the operation unit. And a switch including at least two output terminals extending from the housing to the outside, and a resistor for obtaining a resistance value between the at least two output terminals The housing has a box-like case having the through portion and having the lower part opened, and a holding member that embeds the output terminal and closes the lower part of the case, and the common fixed contact , At least two of the first switching fixed contact and the second switching fixed contact are extended in the case above the holding member to form an extension, and a part of the extension The resistor is attached to the formed attachment portion.

  According to the above switch device, the housing has a box-shaped case having a penetrating portion and opened downward, and a holding member that embeds the output terminal and closes the lower portion of the case. At least two of the first switching fixed contact and the second switching fixed contact are extended in the case above the holding member to form an extending portion, and the mounting portion formed on a part of the extending portion Since the resistor is mounted on the holding member, the mounting portion of the resistor can be positioned above the holding member, so that the resistor can be easily mounted on the mounting portion even after the output terminal is embedded in the holding member. It becomes possible. In addition, since a substrate for attaching the resistor is not required, it is possible to suppress an increase in size of the entire switch device.

  In the switch device, the common fixed contact, the first switching fixed contact, the second switching fixed contact, and the movable contact are provided on one side of the housing, and the extending portion is on the other side in the housing. Preferably, the resistor is disposed at least on the other side of the common fixed contact, the first switching fixed contact, the second switching fixed contact, and the movable contact. In this way, each fixed contact, movable contact, and moving member are provided close to one side in the housing, and at least a resistor is disposed on the other side of each fixed contact and movable contact. The inside of the housing can be used efficiently, and the increase in size of the switch device can be suppressed.

  In the switch device, it is preferable that the holding member is made of resin, a support wall portion is provided upright, and the extension portion is supported by the support wall portion. Thus, since the extension part to which the resistor is attached can be supported by the support wall part, the position of the extension part is stabilized, and the resistor can be reliably attached.

  In the switch device, the resistor is a chip resistor having electrode portions at both ends, and the electrode portion is attached to the attachment portion by solder, and at least a part of the attachment portion, the electrode portion, Are spaced apart from each other, and the solder is preferably provided between at least a part of the mounting portion and the electrode portion. By providing solder between at least a part of the mounting portions that are spaced apart from each other and the electrode portion of the chip resistor, the amount of solder that connects the electrode portion and the mounting portion can be increased. Therefore, the strength of soldering can be improved and soldering can be reliably performed. In addition, since the volume of the solder provided between the electrode portion and the attachment portion can be increased, even if the holding member attached with the chip resistor expands due to heat and stress occurs in the solder, Since the accompanying stress can be dispersed, the electrical connection between the attachment portion and the electrode portion can be made difficult to be impaired.

  In the switch device, the support wall is provided with a protrusion that protrudes toward the chip resistor from the attachment, and the chip resistor is disposed to face the protrusion, and at least the attachment It is preferable that a part and the said electrode part are spaced apart. In this case, the protrusion can be easily formed integrally with the support wall by molding. By disposing the chip resistor so as to face the protruding portion formed in this way, at least a part of the attachment portion and the electrode portion can be easily separated from each other.

  In the switch device, it is preferable that a recess is provided in at least a part of the mounting portion, and an inner bottom surface of the recess is separated from the electrode portion. Thus, by providing a recess in at least a part of the attachment part, it is possible to reliably separate at least a part of the attachment part and the electrode part.

  In the switch device, a pair of the attachment portions are provided apart from each other with a resin constituting the support wall portion so as to correspond to the electrode portions provided at both ends of the chip resistor, It is preferable that the thickness of the resin positioned between the pair of attachment portions is thinner than the thickness of the resin in other portions of the support wall portion. Thus, by making the thickness of the resin between the pair of mounting portions thinner than the thickness of the resin in the other portions of the support wall portion, the resin heats (for example, heat when reflow soldering the switch device). Even if it expands due to, the amount of expansion in the direction in which the pair of mounting parts are separated can be reduced, so that the electrical connection between the mounting part and the electrode part connected by the solder is not easily broken, and the reliability is improved. Is possible.

  In the switch device, the chip resistor is attached to one surface side of the support wall portion, and a surface on the other surface side of the support wall portion is a vertical direction that is a standing direction of the support wall portion and the vertical direction. It is preferable to have a thin portion extending in a groove shape in a direction crossing the direction. By providing the thin wall portion with the thin wall portion in this way, the amount of warpage of the support wall portion can be reduced even when high temperature is applied. For this reason, it becomes possible to reduce the stress to the solder accompanying a curvature. Further, if the extending portion is exposed from the thin portion, the metal plate material can be pressed during insert molding.

  In the switch device, the support wall portion is formed at least in a part of the extension portion located between the common fixed contact, the first switching fixed contact, the second switching fixed contact, and the mounting portion. It is preferable to have a thick portion that embeds the periphery. As described above, since the common fixed contact, the first switching fixed contact and the second switching fixed contact, and the thick portion that embeds the periphery thereof in at least a part of the extending portion located between the mounting portions, When the resistor is soldered, it is possible to prevent the flux from adhering to the contact through the extending portion.

  In the switch device, it is preferable that a recess is provided in the support wall, and the attachment portion is formed by exposing a part of the extension in the recess. In this way, since the resistor is mounted in the recess, the periphery of the resistor can be surrounded by the support wall, and the solder spread at the time of mounting is limited to the recess, and even if the mounting portion is close, It becomes possible to prevent a short circuit. Moreover, since the position of the periphery of the resistor can be regulated, the resistor can be prevented from rotating.

  In the switch device, the support wall portion is provided between a switch contact portion including the movable contact, the common fixed contact, the first switching fixed contact, and the second switching fixed contact, and a mounting portion of the resistor. It is preferable to provide a partition wall portion projecting in a direction intersecting with the extending direction. As described above, since the switch contact portion and the resistor mounting portion are separated by the partition wall portion, even if a solder ball is generated during mounting, foreign matter adhesion to the switch contact portion can be prevented. It becomes possible.

  In the switch device, the common fixed contact, the first switching fixed contact, the second switching fixed contact, the extension portion, and the mounting portion are arranged on substantially the same plane, and the support wall portion is the case. It is preferable that it is spaced apart from the side wall. As described above, since the support wall part and the side wall of the case are separated from each other, when the case and the holding member are assembled, it is difficult to cause a problem that the resistor hits the case. It is possible to prevent cracks and the like from entering the part.

  According to the switch device, at least two of the common fixed contact, the first switching fixed contact, and the second switching fixed contact are extended in the case above the holding member to form the extending portion, Since the resistor is attached to the attachment part formed at a part of the output part, the attachment part of the resistor can be positioned above the holding member that holds the output terminal, so that the output terminal is embedded in the holding member. It is possible to easily attach the resistor to the attachment portion even after the operation. Moreover, since a substrate for mounting the resistor is not required, it is possible to suppress an increase in the size of the entire switch device.

It is a disassembled perspective view of the switch apparatus which concerns on one embodiment of this invention. It is the perspective view which assembled the switch device concerning the above-mentioned embodiment. It is a front view of the switch apparatus concerning the said embodiment. It is a top view of the switch device concerning the above-mentioned embodiment. It is sectional drawing in the II line | wire of FIG. It is sectional drawing in the II-II line | wire of FIG. It is a front view of the state which removed the case, the moving member, and the cover member from the switch apparatus shown in FIG. It is a figure for demonstrating the relationship between the output terminal, the extension part, and resistor which comprise the detection circuit which the switch apparatus which concerns on the said embodiment has. It is a block diagram of the detection circuit shown in FIG. It is a figure for demonstrating the relationship between the output terminal, the extension part, and resistor which comprise the other detection circuit applied to the switch apparatus which concerns on the said embodiment. It is a block diagram of the detection circuit shown in FIG. It is a figure for demonstrating the relationship between the output terminal, the extension part, and resistor which comprise the other detection circuit applied to the switch apparatus which concerns on the said embodiment. It is a block diagram of the detection circuit shown in FIG. It is a figure for demonstrating the relationship between the output terminal, the extension part, and resistor which comprise the other detection circuit applied to the switch apparatus which concerns on the said embodiment. It is a block diagram of the detection circuit shown in FIG. It is a disassembled perspective view of the switch apparatus which concerns on other embodiment of this invention. It is the perspective view which assembled the switch device concerning the above-mentioned embodiment. It is a perspective view which shows the external appearance of the resistor 9 which concerns on the said embodiment. It is a perspective view which shows the external appearance of the holding member 2 which concerns on the said embodiment. It is a front view which shows the state which looked at the holding member 2 which concerns on the said embodiment from the X1 direction side shown in FIG. In FIG. 20, the attachment portion 29 is hatched. It is sectional drawing which shows the cross section cut | disconnected by sectional line III-III of FIG. It is a figure which shows the state which looked at the holding member 2 which concerns on the said embodiment from the X2 direction side shown in FIG. 19, and FIG. 22 (a) is a perspective view which shows the state seen from the X2 direction side shown in FIG. FIG. 22B is a rear view showing a state viewed from the X2 direction side shown in FIG. It is a figure which shows the state by which the resistor 9 is arrange | positioned at the holding member 2 which concerns on the said embodiment, FIG.23 (a) is a front view which shows the state by which the resistor 9 is arrange | positioned at the holding member 2. 23 (b) is a cross-sectional view showing a cross section taken along the cross-sectional line IV-IV shown in FIG. 23 (a). It is a figure for demonstrating the relationship between the output terminal, the extension part, and resistor which comprise the detection circuit applied to the switch apparatus which concerns on the said embodiment. It is a block diagram of the detection circuit shown in FIG. It is a schematic cross section which shows the structure of the modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the switch device according to the present embodiment is connected to an external device such as an electronic control unit (ECU), and is used as a detection switch that detects opening and closing of a vehicle bonnet or the like. The present invention is not limited to this, and can be applied to any switch device in other usage environments. Hereinafter, a case where the present invention is applied to a detection switch that detects opening and closing of a vehicle hood or the like will be described.

  FIG. 1 is an exploded perspective view of a switch device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view in which the switch device 1 according to the present embodiment is assembled. FIG. 3 is a front view of the switch device according to the present embodiment. FIG. 4 is a plan view of the switch device according to the present embodiment. FIG. 5 is a cross-sectional view taken along the line II of FIG. 6 is a cross-sectional view taken along line II-II in FIG. FIG. 7 is a front view of the switch device shown in FIG. 3 with the case 3, the moving member 6, and the cover member 5 removed. In FIG. 1 and FIGS. 5 to 7, illustration of the solder for attaching the resistor 9 to the attachment portion 29 is omitted.

  As shown in FIG. 1, the switch device 1 according to the present embodiment includes a housing 4 formed by a holding member 2 and a case 3, and a movement in which an operation unit 63 protrudes from a through portion 311 of the housing 4 (case 3). The member 6, the urging member 8 that returns the moving member 6 to the initial state before the operation, and the movable contact 7 that is operated by moving the operation portion 63 according to contact or non-contact with the detection target. A common fixed contact 25 that is always in contact with the movable contact 7, a first switching fixed contact 26 and a second switching fixed contact 27 in which the contact state with the movable contact 7 is switched by the movement of the movable contact 7, and the housing 4 (holding). A first output terminal 22 and a second output terminal 23 projecting downward from the member 2) and outputting signals to the outside, and a resistor 9 for obtaining a resistance value between these output terminals.

  The holding member 2 is formed of an insulating resin, and a first output terminal 22 made of a metal plate and a first output terminal 22 made of a metal plate are provided on a step portion 211 formed one step upward from the flat base portion 21 shown in FIG. Two output terminals 23 and a third output terminal 24 are embedded by insert molding. One end of each of the output terminals 22, 23, 24 protrudes below the base portion 21 as shown in FIG. 5. Further, the common fixed contact 25, the first switching fixed contact 26 and the second switching fixed contact 27 are supported by the holding member 2 by being partially embedded in the holding member 2. .

  The support wall portion 212 is integrally provided upward from the step portion 211 of the holding member 2 and is disposed on the inner side of the periphery of the step portion 211, and is accommodated in the case 3 described later. It is formed to be. The support wall portion 212 holds the first switching fixed contact 26, the second switching fixed contact 27, and an extending portion 28 (see FIG. 6) described later, and the first switching fixed contact 26 and the second switching fixed contact 27. An insulating portion 214 filled with an insulating resin is formed between the two. Further, the support wall 212 is formed with recesses 215 (215a, 215b) that can accommodate the resistors 9 (chip resistors R1, R2). 5 and 7, the resistor 9 is hatched for convenience of explanation.

  Further, as shown in FIG. 6, the support wall portion 212 is disposed between the first switching fixed contact 26 and the second switching fixed contact 27 and the recess 215, and extends in the extending direction of the support wall portion 212. A partition wall 216 that protrudes in the intersecting direction is formed. The partition wall 216 is formed so as to protrude higher than the resistor 9 and the second contact portion 75 of the movable contact 7. That is, the gap between the partition wall 216 and the inner wall of the case 3 is formed to be small. 5 and 6, a common fixed contact 25, a first switching fixed contact 26, and a second switching fixed contact 27 are arranged on the right side of the figure with the partition wall 216 as a boundary, and the resistor 9 is shown on the left side of the figure. Is arranged. In this case, since the storage space between the fixed contacts (25, 26, 27) and the resistor 9 is separated by the partition wall portion 216, when the resistor 9 is fixed by soldering, it is temporarily soldered. Even when a foreign substance such as a ball is generated, it is possible to prevent a problem of adhering to each fixed contact (25, 26, 27) or the movable contact 7 beyond the partition 216. The partition wall 216 is formed by protruding the support wall 212, but is not limited thereto, and may be formed by protruding the inner wall of the side wall 32 of the case 3.

  As will be described later, the extending portion 28 is configured to hold at least two of the common fixed contact 25, the first switching fixed contact 26, and the second switching fixed contact 27 in accordance with variations of the detection circuit of the switch device 1. 2 is extended to the support wall 212 side (in a direction away from the common fixed contact 25) accommodated inside the case 3 and embedded and supported. More specifically, the extension 28 (28a, 28b) extends across the right and left sides of the partition wall 216 as shown in FIGS. 5 and 6, and extends to the right side of the drawing. Any of the arranged common fixed contact 25, the first switching fixed contact 26, and the second switching fixed contact 27 is electrically connected to the resistor 9 arranged on the left side in the figure.

  Further, as shown in FIG. 7, a part of the extended portion 28 is exposed from the support wall portion 212 to form a mounting portion 29 (29 a 1, 29 b 1, 29 b 2), and the resistor 9 is connected to the mounting portion 29. It is fixed by soldering. In other words, the attachment portion 29 of the resistor 9 is disposed above the holding member 2 (base portion 21) by the extending portion 28, and the attachment portion 29 is provided in a state before being covered by the case 3. Since the periphery of the support wall portion 212 is in an open state, the resistor 9 can be easily attached to the attachment portion 29 even after the output terminals 22 and 23 are embedded in the holding member 2. . And the resistor 9 is arrange | positioned in the housing 4 because the support wall part 212 to which this resistor 9 was attached is accommodated and assembled in the accommodating part of case 3 mentioned later. The output terminals 22, 23, 24, the common fixed contact 25, the first switching fixed contact 26, the second switching fixed contact 27, and the extending portion 28 are formed by stamping a common band-shaped metal plate by press molding. It is possible to form in a state of being connected by a connecting portion, and to cut and form an unnecessary connecting portion after insert molding.

  The attaching portion 29 is preferably formed by exposing a part of the extending portion 28 in the concave portion 215 (215a, 215b) formed in the support wall portion 212. In this case, the resistor 9 can be mounted in the recess 215, and the periphery thereof can be surrounded by the insulating resin of the support wall portion 212. Therefore, the solder spread can be limited in the recess 215 when the resistor 9 is mounted by soldering. For example, even if the adjacent mounting portions 29 are close to each other, it is possible to prevent a short circuit. . Moreover, since the position of the periphery of the resistor 9 can be regulated by the inner wall of the recess 215, it is possible to prevent the displacement of the resistor 9 from occurring in the rotational direction during mounting. The resistor 9 can be an inexpensive general-purpose chip resistor, but other resistors can also be used.

  Further, as shown in FIG. 5, the extension portion 28 is supported on the support wall portion 212 by forming a thick portion 213 on the support wall portion 212, so that the common fixed contact 25, the first switching fixed contact 26, and the first It is preferable to embed an extended portion 28 (28 a, 28 b) located between the 2 switching fixed contact 27 and the attachment portion 29 in the thick portion 213. In this case, at least a part of the extended portion 28 located between each fixed contact and the attachment portion 29 may be embedded in the thick portion 213 so that the flux due to the soldering of the resistor 9 extends. Even if it travels through the portion 28, it is possible to prevent the flux from adhering to each fixed contact by being blocked by the thick portion 213.

  The common fixed contact 25, the first switching fixed contact 26, the second switching fixed contact 27, the extension portion 28, and the attachment portion 29 are arranged in substantially the same plane as shown in FIG. 6 and are held by the holding member 2. In this case, it is preferable that the support wall portion 212 is provided away from the outer peripheral shape of the step portion 211 toward the center and is separated from the side wall portion 32 of the case 3 described later to form a space portion. In such a case, when assembling the case 3 and the holding member 2, it is difficult for the resistor 9 to come into contact with the inner wall of the case 3. It is possible to prevent cracks and the like from entering.

  The case 3 is formed of an insulating resin, and is formed in a box shape with a flat plate portion 31 as a top surface, a side wall portion 32 extending downward from the periphery thereof, and an opening portion 33 being opened downward. Yes. The side wall portion 32 is formed so that the outer peripheral shape of the step portion 211 of the holding member 2 is fitted, and the support wall portion 212 side of the holding member 2 is accommodated in the opening portion 33 so that the base portion of the holding member 2 is accommodated. The housing 4 having the storage portion is formed by closing with 21. The case 3 and the holding member 2 can be joined together by, for example, laser welding or an adhesive. The inner wall of the side wall portion 32 is provided with a guide receiving portion that engages with a moving member 6 described later and guides it up and down, and the operation portion 63 of the moving member 6 is inserted into the flat plate-like portion 31. A through portion 311 is formed. Around the through portion 311, a retaining portion 312 for retaining and fixing a cover member 5 described later is provided.

  The moving member 6 is formed of an insulating resin, and includes a side wall portion 62 that extends downward from the flat plate-like portion 61 and an operation portion 63 that extends upward. A guide portion having a shape corresponding to the guide receiving portion provided on the inner wall of the case 3 is formed on the side wall portion 62, and the operation portion 63 is slidable along the guide receiving portion of the case 3. . The back surface of the flat plate-like portion 61 is formed with a receiving portion for a movable contact 7 and a coil spring 8 which will be described later. Further, as shown in FIG. 6, the operation portion 63 is formed in a cylindrical shape having a hollow portion 64, and the output terminal 22 is inserted into the hollow portion 64 when the operation portion 63 slides in contact with the detection target. A part of the common fixed contact 25 side is formed so as to be accommodated.

  The movable contact 7 is made of a metal plate having a spring property, and as shown in FIG. 1, a pair of U-shaped first connecting portions 72 and 72 on one side of the base 71 and the first connecting portions. And a pair of first contact portions 73 and 73 provided so as to protrude from the portion. Also, on the other side across the base 71, a pair of U-shaped second connecting portions 74, 74, and a pair of second contact portions 75, 75 provided protruding from the second connecting portions, have. The first contact portions 73 and 73 are opposed to each other with a predetermined gap, and a clip-like sliding contact with respect to the common fixed contact 25 is formed. Similarly, the second contact portions 75 and 75 are opposed to each other with a predetermined gap, and a clip-like sliding contact with respect to the first switching fixed contact 26 and the second switching fixed contact 27 is formed.

  One end of the coil spring 8 is supported by a support portion 217 formed on the holding member 2, and the other end abuts on the base portion 71 of the movable contact 7 and the lower surface of the flat plate-like portion 61 of the moving member 6. The contact 7 is biased toward the flat plate portion 31 of the case 3. The coil spring 8 is compressed when the operation unit 63 comes into contact with the detection target and the moving member 6 and the movable contact 7 move, and when the operation unit 63 becomes non-contact with the detection target, It is a return member that returns the moving member 6 and the movable contact 7 to the initial state.

  The cover member 5 is formed of an elastic member such as rubber, and has a dome portion 52 that is continuous with the flange portion 51, and a through-hole 53 through which the operation portion 63 of the moving member 6 is inserted substantially at the center of the dome portion 52. doing. The cover member 5 is arranged in the case 3 so as to cover the through-hole 311, and is fixed by caulking the flange portion 51 by deforming the resin wall portion around the retaining portion 312 of the case 3 inward, for example. Is done. In this way, the cover member 5 can prevent dust and the like from entering the switch device 1.

  Mounting of the resistor 9 of the switch device 1 according to the present embodiment is performed by fixing the resistor 9 to the mounting portion 29 of the holding member 2 by soldering or the like. And in the switch apparatus 1, since the attaching part 29 of the resistor 9 is arrange | positioned above the holding member 2 which does not have a side wall part by the extension part 28, the output terminals 22, 23, and 24 were embed | buried. Since the periphery of the holding member 2 can be formed in an open state, the resistor 9 can be easily attached to the attachment portion 29. And the assembly of the switch apparatus 1 which concerns on this Embodiment attached the resistor 9 after attaching the resistor 9 to the attaching part 29 formed in the holding member 2 which embed | buried the output terminals 22,23,24. Assembling is performed by integrating the case 3 and the holding member 2 so as to accommodate the support wall portion 212, the coil spring 8, the movable contact 7, and the moving member 6. As described above, in the switch device 1 according to the present embodiment, the resistor 9 can be disposed in the housing 4, and it is not necessary to provide a dedicated board for mounting the resistor outside the housing 4. And the increase in the outer shape of the switch device 1 can be prevented. As shown in FIGS. 2 and 5, the switch device 1 assembled in this way is protruded by inserting the operation portion 63 of the moving member 6 into the through portion 311 of the case 3 and the through hole 53 of the cover member 5. It is in a state. Also, electric wires (not shown) are connected to output terminals 22, 23, and 24 corresponding to variations of the detection circuit of the switch device 1 to be described later, and are connected to an external device such as an ECU (not shown).

  As shown in FIGS. 5 and 6, in the housing 4 of the switch device 1, the guide portion of the moving member 6 is slidably positioned by a guide receiving portion provided inside the side wall portion 32 of the case 3. ing. Thereby, when the operation part 63 of the moving member 6 is pressed by contact with the detection target, the moving member 6 can slide in the vertical direction on the paper surface of FIG. Further, the moving member 6 and the movable contact 7 are always urged upward by a coil spring 8.

  In an initial state where the moving member 6 of the switch device 1 is not pressed, the movable contact 7 is in contact with the first switching fixed contact 26, and the moving member 6 is pressed and moved downward in FIG. The movable contact 7 moves away from the first switching fixed contact 26 and contacts the second switching fixed contact 27. Then, the contact state between the movable contact 7 and the first switching fixed contact 26 and the contact state between the movable contact 7 and the second switching fixed contact 27 are switched, and at least 2 corresponding to variations of the detection circuit of the switch device 1 described later. The resistance value between the two output terminals 22, 23, 24 is obtained. Thus, in switch device 1 concerning this embodiment, the signal output at the time of operation with respect to moving member 6 and at the time of non-operation can be obtained by resistance value, and the electric wire connected to switch device 1 by this resistance value It is possible to detect whether is a normal state or a broken or short circuit failure state.

  The moving member 6, the movable contact 7, and the fixed contacts 25, 26, 27 are provided close to one side in the housing 4, and more than the moving member 6, the movable contact 7, and the fixed contacts 25, 26, 27. It is preferable to arrange the resistor 9 at the other side position. For example, as shown in FIGS. 5 to 7, the moving member 6 and the movable contact 7 are provided on one side (right side) of the housing 4 with the partition wall 216 interposed therebetween, and the extending portion 28 is provided on the other side in the housing 4. The resistor 9 can be disposed at a position on the other side of the moving member 6, the movable contact 7 and the fixed contacts 25, 26, 27. When arranged in this way, the inside of the housing 4 can be used efficiently, and the switch device 1 can be prevented from being enlarged.

  FIG. 8 is a diagram for explaining the relationship between the output terminals 22 and 23, the extending portions 28a and 28b, and the chip resistors R1 and R2 constituting the detection circuit applied to the switch device 1 according to the present embodiment. It is. In FIG. 8, for convenience of explanation, the chip resistors R1 and R2 are hatched. Further, in order to facilitate understanding, the holding member 2 is not shown. FIG. 9 is a diagram illustrating a configuration example of the detection circuit illustrated in FIG.

  As shown in FIG. 8, the common fixed contact 25 is formed of a metal plate material and is formed at one end of the first output terminal 22 protruding upward from the step portion 211 of the holding member 2. The first switching fixed contact 26 is formed of a metal plate, and a part of the first switching fixed contact 26 extends in the direction away from the first switching fixed contact 26 in the case 3 positioned above the stepped portion 211 of the holding member 2. A protruding portion 28a is formed. A mounting portion 29a1 of the chip resistor R1 is formed in a part of the extending portion 28a. The second switching fixed contact 27 is formed of a metal plate, and a part of the second switching fixed contact 27 is extended in the case 3 located above the stepped portion 211 of the holding member 2 and in a direction away from the second switching fixed contact 27. Further, an extending portion 28b branched in two directions is formed. An attachment portion 29b1 of the chip resistor R1 is formed at one branch portion of the extending portion 28b, and an attachment portion 29b2 of the chip resistor R2 is formed at the other branch portion. Further, the second output terminal 23 protrudes upward from the step portion 211 of the holding member 2 to form a connection portion 231, and a mounting portion 29 d 1 for the chip resistor R 2 is formed in a part thereof. Here, the third output terminal 24 is cut at a portion protruding from below the holding member 2 and is not used as an output terminal to an external device. And chip resistor R1 is attached between attachment part 29a1 and attachment part 29b1, and chip resistor R2 is attached between attachment part 29b2 and attachment part 29d1. That is, in the switch device 1 according to the present embodiment, the attachment portion 29 of the resistor 9 is located above the holding member 2 and before the cover 3 is covered with the case 3, The periphery of the attachment portion 29 is in an open state. The first switching fixed contact 26 and the second switching fixed contact 27 are supported by the support wall portion 212 of the holding member 2 that is not shown in FIG.

  In the switch device 1 according to the present embodiment, the first contact portion 73 of the movable contact 7 is always in contact with the common fixed contact 25. On the other hand, the second contact portion 75 of the movable contact 7 is in contact with the first switching fixed contact 26 in the initial state where the moving member 6 is not in contact with the detection target. Then, when the moving member 6 is in sliding contact with the detection target, the movable contact 7 is slid along with this, and the second contact portion 75 is separated from the first switching fixed contact 26 and becomes non-contact. After that, it comes into contact with the second switching fixed contact 27. Thus, when the moving member 6 is in the initial state, the common fixed contact 25 and the first switching fixed contact 26 are in contact with the movable contact 7, and when the moving member 6 is pushed down, the common fixed contact 25 and the first fixed fixed contact 25 are in contact with the movable contact 7. The 2 switching fixed contact 27 comes into contact with the movable contact 7 to switch the switch.

  In the switch device 1 according to the present embodiment, as shown in FIG. 9, a contact a1 (first switching fixed contact 26) is connected to a common terminal COM corresponding to the output terminal 22 via a movable contact S1 (movable contact 7). It is connected. One end of the chip resistor R1 is connected to the contact a1 (first switching fixed contact 26), and the other end of the chip resistor R1 is connected to one end of the chip resistor R2 and the contact a2 (second switching fixed contact 27). It is connected. The other end of the chip resistor R2 is connected to a terminal NO corresponding to the output terminal 23. The contact state with the contacts a1 and a2 is switched by the movement of the movable contact S1 (movable contact 7).

  In this detection circuit, in the initial state, the movable contact 7 (S1) is in a position where it comes into contact with the first switching fixed contact 26 (contact a1). In this case, a value obtained by adding the resistance value of the chip resistor R1 and the resistance value of the chip resistor R2 is detected as the resistance value between the output terminal 22 and the output terminal 23. On the other hand, when the movable contact 7 (S1) is pushed down and moved to a position where it comes into contact with the second switching fixed contact 27 (contact a2), the resistance value of the chip resistor R2 is set as the resistance value between the output terminal 22 and the output terminal 23. Will be detected.

  In this detection circuit, when an electric wire connected to an external device such as an ECU is in a disconnected state, no current flows regardless of the connection state of the movable contact S1. The resistance value seen from the side is detected as infinite. Furthermore, when the two wires connected to the external device are in a short circuit state, the current flows short-circuited regardless of the connection state of the movable contact S1, so the detection circuit side is connected from the external device. The observed resistance value is detected as zero.

  As described above, in the switch device 1 according to the present embodiment, the first switching fixed contact 26 and the second switching fixed contact 27 are extended in the case 3 above the holding member 2 and extended. The parts 28a and 28b are formed, and the chip resistors R1 and R2 are attached to the attachment parts 29a1, 29b1 and 29b2 formed in part of the extending parts 28a and 28b. That is, the mounting portions 29a1, 29b1, 29b2 of the chip resistors R1, R2 can be positioned above the holding member 2 holding the output terminals 22, 23, so that the output terminals 22, 23 are embedded in the holding member 2. It is possible to easily attach the chip resistors R1 and R2 even after the operation. In addition, it is not necessary to provide mounting components for the chip resistors R1 and R2 outside the housing 4 of the switch device 1, and the switch device can be downsized as much as the installation space can be reduced.

  FIG. 10 illustrates the relationship between the output terminals 22 and 24, the extension portions 28a and 28b, and the chip resistors R1 and R2 constituting another detection circuit applied to the switch device 1 according to the present embodiment. FIG. In FIG. 10, for convenience of explanation, the chip resistors R1 and R2 are hatched. Further, in order to facilitate understanding, the holding member 2 is not shown. FIG. 11 is a diagram illustrating a configuration example of the detection circuit illustrated in FIG.

  As shown in FIG. 10, the common fixed contact 25 is formed of a metal plate material, and is formed at one end of the first output terminal 22 protruding upward from the step portion 211 of the holding member 2. The first switching fixed contact 26 is formed of a metal plate, and a part of the first switching fixed contact 26 extends in the direction away from the first switching fixed contact 26 in the case 3 positioned above the stepped portion 211 of the holding member 2. A protruding portion 28a is formed. Then, a mounting portion 29a1 of the chip resistor R1 is formed in a part of the extending portion 28a, and a mounting portion 29a2 of the chip resistor R2 is formed at the extended end. The second switching fixed contact 27 is formed of a metal plate, and a part of the second switching fixed contact 27 is extended in the case 3 located above the stepped portion 211 of the holding member 2 and in a direction away from the second switching fixed contact 27. An extended portion 28b is formed. A mounting portion 29b1 of the chip resistor R1 is formed in the extending portion 28b. Further, the third output terminal 24 is formed with a connection portion 241 protruding upward from the step portion 211 of the holding member 2, and a mounting portion 29c1 of the chip resistor R2 is formed in a part thereof. Here, the 2nd output terminal 23 is cut | disconnected in the part protruded from the downward direction of the holding member 2, and is not used as an output terminal to an external device. And chip resistor R1 is attached between attachment part 29a1 and attachment part 29b1, and chip resistor R2 is attached between attachment part 29a2 and attachment part 29c1. That is, also in the switch device 1 according to the present embodiment, the attachment portion 29 of the resistor 9 is located above the holding member 2, and in a state before being covered by the case 3, The periphery of the attachment portion 29 is in an open state.

  In the switch device 1 according to the present embodiment, the first contact portion 73 of the movable contact 7 is always in contact with the common fixed contact 25. On the other hand, the second contact portion 75 of the movable contact 7 is in contact with the first switching fixed contact 26 in the initial state where the moving member 6 is not in contact with the detection target. Then, when the moving member 6 is in sliding contact with the detection target, the movable contact 7 is slid along with this, and the second contact portion 75 is separated from the first switching fixed contact 26 and becomes non-contact. After that, it comes into contact with the second switching fixed contact 27. As described above, when the moving member 6 is in the initial state, the common fixed contact 25 and the first switching fixed contact 26 are in contact with the movable contact 7, and when the moving member 6 is pushed down, the common fixed contact 25 and the first fixed fixed contact 25 are in contact with the movable contact 7. The 2 switching fixed contact 27 comes into contact with the movable contact 7 to switch the switch.

  In the switch device 1 according to the present embodiment, as shown in FIG. 11, the contact a1 (first switching fixed contact 26) is connected to the common terminal COM corresponding to the output terminal 22 via the movable contact S2 (movable contact 7). It is connected. One end of the chip resistor R1 is connected to the contact a1 (first switching fixed contact 26), and the other end of the chip resistor R1 is connected to the contact a2 (second switching fixed contact 27). One end of the chip resistor R2 is connected to the contact a1 (first switching fixed contact 26), and the other end of the chip resistor R2 is connected to a terminal NC corresponding to the output terminal 24. Then, the contact state with the contacts a1 and a2 is switched by the movement of the movable contact S2 (movable contact 7).

  In the detection circuit described above, the movable contact 7 (S2) is in contact with the first switching fixed contact 26 (contact a1) in the initial state, and the resistance value between the output terminal 22 and the output terminal 24 is the resistance of the chip resistor R2. A resistance value is detected. On the other hand, when the movable contact 7 (S2) is pushed down and moved to a position where the movable contact 7 (S2) contacts the second switching fixed contact 27 (contact a2), the chip resistor R1 and the chip resistor are set as resistance values between the output terminal 22 and the output terminal 24. The resistance value obtained by adding the resistance value of the device R2 is detected.

  Even in this detection circuit, when the electric wire connected to the external device such as the ECU is in a disconnected state, the current stops flowing regardless of the connection state of the movable contact S2. The resistance value viewed from the circuit side is detected as infinite. Furthermore, when the two wires connected to the external device are short-circuited, the current flows short-circuited regardless of the connection state of the movable contact S2, so that the detection circuit side is connected from the external device. The observed resistance value is detected as zero.

  As described above, in the switch device 1 according to the present embodiment, the first switching fixed contact 26 and the second switching fixed contact 27 are extended in the case 3 above the holding member 2 and extended. The parts 28a and 28b are formed, and the chip resistors R1 and R2 are attached to the attachment parts 29a1, 29a2, and 29b1 formed in part of the extending parts 28a and 28b. That is, since the mounting portions 29a1, 29a2, and 29b1 of the chip resistors R1 and R2 can be positioned above the holding member 2 that holds the output terminals 22 and 24, the output terminals 22 and 24 are embedded in the holding member 2. It is possible to easily attach the chip resistors R1 and R2 even after the operation. In addition, it is not necessary to provide mounting components for the chip resistors R1 and R2 outside the housing 4 of the switch device 1, and the switch device can be downsized as much as the installation space can be reduced.

  FIG. 12 shows the relationship between the output terminals 22, 23, and 24, the extending portions 28a and 28b, and the chip resistors R1, R2, and R3 constituting another detection circuit applied to the switch device 1 according to the present embodiment. It is a figure for demonstrating. In FIG. 12, for convenience of explanation, the chip resistors R1, R2, and R3 are hatched. Further, in order to facilitate understanding, the holding member 2 is not shown. FIG. 13 is a diagram illustrating a configuration example of the detection circuit illustrated in FIG.

  As shown in FIG. 12, the common fixed contact 25 is formed of a metal plate material, and is formed at one end of the first output terminal 22 protruding upward from the step portion 211 of the holding member 2. The first switching fixed contact 26 is formed of a metal plate, and a part of the first switching fixed contact 26 extends in the direction away from the first switching fixed contact 26 in the case 3 positioned above the stepped portion 211 of the holding member 2. A protruding portion 28a is formed. Then, a mounting portion 29a1 of the chip resistor R1 is formed in a part of the extending portion 28a, and a mounting portion 29a2 of the chip resistor R2 is formed at the extended end. The second switching fixed contact 27 is formed of a metal plate, and a part of the second switching fixed contact 27 is extended in the case 3 located above the stepped portion 211 of the holding member 2 and in a direction away from the second switching fixed contact 27. Further, an extending portion 28b branched in two directions is formed. A mounting portion 29b1 of the chip resistor R1 is formed at one branch portion of the extending portion 28b, and a mounting portion 29b2 of the chip resistor R3 is formed at the other branch portion. Further, the second output terminal 23 is formed with a connection portion 231 that protrudes upward from the step portion 211 of the holding member 2, and a mounting portion 29d1 of the chip resistor R3 is formed in a part thereof. Further, the third output terminal 24 is formed with a connection portion 241 protruding upward from the step portion 211 of the holding member 2, and a mounting portion 29c1 of the chip resistor R2 is formed in a part thereof. A chip resistor R1 is attached between the attachment portion 29a1 and the attachment portion 29b1, a chip resistor R2 is attached between the attachment portion 29a2 and the attachment portion 29c1, and a chip resistor R3 is provided between the attachment portion 29b2 and the attachment portion 29d1. It is attached. That is, also in the switch device 1 according to the present embodiment, the attachment portion 29 of the resistor 9 is located above the holding member 2, and in a state before being covered by the case 3, The periphery of the attachment portion 29 is in an open state.

  In the switch device 1 according to the present embodiment, the first contact portion 73 of the movable contact 7 is always in contact with the common fixed contact 25. On the other hand, the second contact portion 75 of the movable contact 7 is in contact with the first switching fixed contact 26 in the initial state where the moving member 6 is not in contact with the detection target. Then, when the moving member 6 is in sliding contact with the detection target, the movable contact 7 is slid along with this, and the second contact portion 75 is separated from the first switching fixed contact 26 and becomes non-contact. After that, it comes into contact with the second switching fixed contact 27. As described above, when the moving member 6 is in the initial state, the common fixed contact 25 and the first switching fixed contact 26 are in contact with the movable contact 7, and when the moving member 6 is pushed down, the common fixed contact 25 and the first fixed fixed contact 25 are in contact with the movable contact 7. The 2 switching fixed contact 27 comes into contact with the movable contact 7 to switch the switch.

  In the switch device 1 according to the present embodiment, as shown in FIG. 13, the contact a1 (first switching fixed contact 26) is connected to the common terminal COM corresponding to the output terminal 22 via the movable contact S3 (movable contact 7). It is connected. One end of the chip resistor R1 is connected to the contact a1 (first switching fixed contact 26), and the other end of the chip resistor R1 is connected to the contact a2 (second switching fixed contact 27). One end of the chip resistor R2 is connected to the contact a1 (first switching fixed contact 26), and the other end of the chip resistor R2 is connected to a terminal NC corresponding to the output terminal 24. Also, one end of the chip resistor R3 is connected to the contact a2 (second switching fixed contact 27), and the other end of the chip resistor R3 is connected to a terminal NO corresponding to the output terminal 23. The contact state with the contacts a1 and a2 is switched by the movement of the movable contact S3 (movable contact 7).

  In the detection circuit described above, in the initial state, the movable contact 7 (S3) is in contact with the first switching fixed contact 26 (contact a1), and the chip resistor R2 is used as a resistance value between the output terminal 22 and the output terminal 24. The resistance value of is detected. Further, a resistance value obtained by adding the resistance values of the chip resistor R1 and the chip resistor R3 is detected as the resistance value between the output terminal 22 and the output terminal 23. On the other hand, when the movable contact 7 (S3) is pushed down and moved to a position where the movable contact 7 (S3) contacts the second switching fixed contact 27 (contact a2), the chip resistor R1 and the chip resistor are set as resistance values between the output terminal 22 and the output terminal 24. The resistance value obtained by adding the resistance value of the device R2 is detected. Further, the resistance value of the chip resistor R3 is detected as the resistance value between the output terminal 22 and the output terminal 23.

  Even in this detection circuit, when the electric wire connected to the external device such as the ECU is in a disconnected state, no current flows regardless of the connection state of the movable contact S3. The resistance value viewed from the circuit side is detected as infinite. Furthermore, when the three wires connected to the external device are short-circuited, the current flows short-circuited regardless of the connection state of the movable contact S3. The observed resistance value is detected as zero.

  As described above, in the switch device 1 according to the present embodiment, the first switching fixed contact 26 and the second switching fixed contact 27 are extended in the case 3 above the holding member 2 and extended. The chip resistors R1, R2, and R3 are attached to the attachment portions 29a1, 29a2, 29b1, and 29b2 formed in part of the extending portions 28a and 28b. That is, the mounting portions 29a1, 29a2, 29b1, 29b2 of the chip resistors R1, R2, R3 can be positioned above the holding member 2 that holds the output terminals 22, 23, 24, so that the output terminals 22, 23, Even after 24 is embedded in the holding member 2, the chip resistors R1, R2, and R3 can be easily attached. Moreover, it is not necessary to provide mounting components for the chip resistors R1, R2, and R3 outside the housing 4 of the switch device 1, and the switch device can be miniaturized as much as the installation space can be reduced.

  FIG. 14 illustrates the relationship between the output terminals 22 and 23, the extension portions 28a, 28b, and 28c, and the chip resistors R1 and R2 that constitute another detection circuit applied to the switch device 1 according to the present embodiment. It is a figure for doing. In FIG. 14, for convenience of explanation, the chip resistors R1 and R2 are hatched. Further, in order to facilitate understanding, the holding member 2 is not shown. FIG. 15 is a diagram illustrating a configuration example of the detection circuit illustrated in FIG.

  As shown in FIG. 14, the common fixed contact 25 is formed of a metal plate material, and is formed at one end portion of the first output terminal 22 protruding upward from the step portion 211 of the holding member 2. Further, an extension portion 28 c is formed in the case 3 positioned above the stepped portion 211 of the holding member 2 of the first output terminal 22 and extending away from the common fixed contact 25. A mounting portion 29c1 of the chip resistor R1 is formed in a part of the extending portion 28c. The first switching fixed contact 26 is formed of a metal plate, and a part of the first switching fixed contact 26 extends in a direction away from the first switching fixed contact 26 in the case 3 positioned above the stepped portion 211 of the holding member 2. Thus, an extending portion 28a is formed. However, the first switching fixed contact 26 is not connected to any output terminal. The second switching fixed contact 27 is formed of a metal plate, and a part of the second switching fixed contact 27 is extended in the case 3 located above the stepped portion 211 of the holding member 2 and in a direction away from the second switching fixed contact 27. An extended portion 28b is formed. A mounting portion 29b1 for the chip resistor R2 is formed in the extending portion 28b. Further, the second output terminal 23 is formed with a connecting portion 231 that protrudes upward from the step portion 211 of the holding member 2 and branches in two directions, and an attachment portion 29d1 of the chip resistor R1 is formed at one branch portion. An attachment portion 29d2 for the chip resistor R2 is formed at the other branch portion. Here, the third output terminal 24 is cut at a portion protruding from below the holding member 2 and is not used as an output terminal to an external device. A chip resistor R1 is attached between the attachment portion 29c1 and the attachment portion 29d1, and a chip resistor R2 is attached between the attachment portion 29b1 and the attachment portion 29d2. That is, also in the switch device 1 according to the present embodiment, the attachment portion 29 of the resistor 9 is located above the holding member 2, and in a state before being covered by the case 3, The periphery of the attachment portion 29 is in an open state.

  In the switch device 1 according to the present embodiment, the first contact portion 73 of the movable contact 7 is always in contact with the common fixed contact 25. On the other hand, the second contact portion 75 of the movable contact 7 is in contact with the first switching fixed contact 26 in the initial state where the moving member 6 is not in contact with the detection target. Then, when the moving member 6 slides in contact with the detection target, the movable contact 7 slides accordingly, and the second contact portion 75 moves away from the first switching fixed contact 26, and then the second switching is performed. Contact the fixed contact 27. As described above, when the moving member 6 is in the initial state, the movable contact 7 is in contact with the common fixed contact 25 and the first switching fixed contact 26, and when the moving member 6 is pushed down, the common fixed contact 25. The second switching fixed contact 27 comes into contact with the movable contact 7 and the switch is switched.

  In the switch device 1 according to the present embodiment, as shown in FIG. 15, the contact a1 (first switching fixed contact 26) is connected to the common terminal COM corresponding to the output terminal 22 via the movable contact S4 (movable contact 7). It is connected. One end of the chip resistor R1 is connected to the common terminal COM corresponding to the output terminal 22, and the other end of the chip resistor R1 is connected to a terminal NO corresponding to the output terminal 23. Further, one end of the chip resistor R2 is connected to the contact a2 (second switching fixed contact 27), and the other end of the chip resistor R2 is connected to a terminal NO corresponding to the output terminal 23. The contact state with the contacts a1 and a2 is switched by the movement of the movable contact S4 (movable contact 7).

  In the detection circuit described above, in the initial state, the movable contact 7 (S4) is in contact with the first switching fixed contact 26 (contact a1), and the chip resistor R1 is used as a resistance value between the output terminal 22 and the output terminal 23. The resistance value of is detected. On the other hand, when the movable contact 7 (S4) is pushed down and moved to a position where it comes into contact with the second switching fixed contact 27 (contact a2), the resistance value of the chip resistor R1 is set as a resistance value between the output terminal 22 and the output terminal 23. The value obtained by integrating the value and the resistance value of the chip resistor R2 is divided by the sum of the resistance value of the chip resistor R1 and the resistance value of the chip resistor R2 (ie, (R1 × R2) / ( R1 + R2)) will be detected.

  Also in this detection circuit, when the electric wire connected to the external device such as the ECU is in a disconnected state, the current stops flowing regardless of the connection state of the movable contact S4. The resistance value viewed from the circuit side is detected as infinite. Further, when the two wires connected to the external device are short-circuited, the current flows short-circuited regardless of the connection state of the movable contact S4. The observed resistance value is detected as zero.

  As described above, in the switch device 1 according to the present embodiment, the common fixed contact 25 and the second switching fixed contact 27 are extended in the case 3 above the holding member 2 to extend the extension portion 28b. 28c, and chip resistors R1 and R2 are attached to attachment portions 29b1 and 29c1 formed in part of the extended portions 28b and 28c. That is, since the mounting portions 29b1 and 29c1 of the chip resistors R1 and R2 can be positioned above the holding member 2 that holds the output terminals 22 and 23, the output terminals 22 and 23 are embedded in the holding member 2 However, the chip resistors R1 and R2 can be easily attached. In addition, it is not necessary to provide mounting components for the chip resistors R1 and R2 outside the housing 4 of the switch device 1, and the switch device can be downsized as much as the installation space can be reduced.

  Next, another embodiment will be described. In the following description, unlike the above-described various embodiments (one embodiment and variations thereof), an example in which at least a part of the mounting portion is spaced from the resistor and is opposed to each other will be described with reference to FIGS. I will explain. Since the basic component configuration and structure are the same as those of the various embodiments described above, the component names, part names, and symbols will be described using the names and symbols used in the various embodiments described above. Further, detailed description of components already described is omitted. FIG. 16 is an exploded perspective view of a switch device according to another embodiment of the present invention. FIG. 17 is a perspective view of the assembled switch device according to the present embodiment. FIG. 18 is a perspective view showing an appearance of the resistor 9 according to the present embodiment. FIG. 19 is a perspective view showing an appearance of the holding member 2 according to the present embodiment. FIG. 20 is a front view showing a state in which the holding member 2 according to the present embodiment is viewed from the X1 direction side shown in FIG. In FIG. 20, the attachment portion 29 is hatched. 21 is a cross-sectional view showing a cross section taken along the cross-sectional line III-III shown in FIG. 22 is a view showing the holding member 2 according to the present embodiment as viewed from the X2 direction side shown in FIG. 19, and FIG. 22 (a) is a perspective view showing the state as viewed from the X2 direction side shown in FIG. FIG. 22B is a rear view showing a state viewed from the X2 direction side shown in FIG. FIG. 23 is a diagram illustrating a state in which the resistor 9 is disposed on the holding member 2 according to the present embodiment, and FIG. 23A is a front view illustrating a state in which the resistor 9 is disposed on the holding member 2. FIG. 23B is a cross-sectional view showing a cross section taken along the cross-sectional line IV-IV shown in FIG. FIG. 24 is a diagram for explaining the relationship between the output terminal, the extending portion, and the resistor that constitute the detection circuit applied to the switch device according to the present embodiment. FIG. 25 is a block diagram of the detection circuit shown in FIG.

  As shown in FIG. 16, the switch device 1 according to the present embodiment includes a housing 4 formed by the holding member 2 and the case 3, and a movement in which the operation unit 63 protrudes from the through portion 311 of the housing 4 (case 3). The member 6, the urging member 8 that returns the moving member 6 to the initial state before the operation, and the movable contact 7 that is operated by moving the operation portion 63 according to contact or non-contact with the detection target. A common fixed contact 25 which is always in contact with the movable contact 7, a first switching fixed contact 26 and a second switching fixed contact 27 whose contact state is switched with the movable contact 7 by the movement of the movable contact 7, and the housing 4 (holding). The first output terminal 22, the second output terminal 23, and the third output terminal 24 that project downward from the member 2) (Z2 direction) and output signals to the outside, and the resistance values between these output terminals are obtained. for And a anti-vessel 9. As shown in FIG. 17, the switch device 1 according to the present embodiment in which the operation unit 63 protrudes upward (Z1 direction) from the housing 4 can perform an input operation by pressing the operation unit 63. it can.

  In the switch device 1 according to the present embodiment, as shown in FIG. 18, the resistor 9 is a chip resistor having electrode portions 91 at both ends.

  In the switch device 1 according to the present embodiment, as shown in FIG. 19, the holding member 2 includes a first output terminal 22, a second output terminal 23, and a third output terminal 24 made of a metal plate. Are integrally formed by insert molding. On one surface side (surface on the X1 direction side) of the support wall portion 212, a resistor 9 in which a pair of electrode portions 91 (see FIG. 18) are arranged in the horizontal direction (Y1-Y2 direction) is arranged in the vertical direction ( The two recesses 215d that can be arranged in the (Z1-Z2 direction) and the resistor 9 are formed so that a pair of electrode portions 91 are arranged in the up-down direction while being formed across the recess 215d (on the Y1 direction side) with resin therebetween. A single recess 215e is formed. As shown in FIG. 20, extending portions 28 (extending portions 28 a, 28 b, 28 c) are embedded in the support wall portion 212. Thus, the first output terminal 22, the second output terminal 23, the third output terminal 24, and a part of the extension portion 28 embedded in the support wall portion 212 are exposed inside the recess 215d and the recess 215e. And the attachment part 29 is formed. The pair of attachment portions 29 are provided so as to be spaced from each other with a resin constituting the support wall portion 212 so as to correspond to the electrode portions 91 (see FIG. 18) provided at both ends of the chip resistor. The thickness of the resin positioned between the pair of attachment portions 29 is formed to be thinner than the thickness of the resin in other portions of the support wall portion 212 (see FIG. 23B). Thus, by making the thickness of the resin between the pair of attachment portions 29 thinner than the thickness of the resin in other portions of the support wall portion 212, the resin is heated (for example, when the switch device is reflow soldered). Even if it expands due to heat), the amount of expansion in the direction in which the pair of attachment portions 29 are separated can be reduced, so that the electrical connection between the attachment portion 29 connected by the solder and the electrode portion 91 is not easily cut off. Reliability can be increased. A mounting portion 29e1 is formed on one side (Y1 direction side) in the width direction in the recess 215d in the vertical direction (Z1-Z2 direction). Further, on the other side (Y2 direction side) in the recess 215d in the width direction, a mounting portion 29e2 is formed on the upper side, and a mounting portion 29e3 is formed on the lower side. Note that the attachment portion 29e1, the attachment portion 29e2, and the attachment portion 29e2 are disposed apart from each other. In the recess 215e, an attachment portion 29e4 is formed on the upper side (Z1 direction side), and an attachment portion 29e5 is formed on the lower side so as to be separated from the attachment portion 29e4.

  Further, as shown in FIGS. 19 and 21, the support wall portion 212 is provided with a protruding portion 218 that protrudes outward (X1 direction side) from the mounting portion 29 between the corresponding pair of mounting portions 29. Yes. In FIG. 21, only a part of the protrusions 218 is shown, but the other protrusions 218 are formed in the same manner. In the recessed part 215d, it is provided between the attachment part 29e1 and the attachment part 29e2, and between the attachment part 29e1 and the attachment part 29e3, on the upper side, the central part, and the lower side of the resin part. In the recessed part 215e, it is provided in the both ends in the width direction (Y1-Y2 direction) of the resin part between the attaching part 29e4 and the attaching part 29e5. Note that the interval between the protrusions 218 is narrower than the width dimension of the resistor 9. Thus, the protrusion 218 can be easily formed integrally with the support wall 212 by molding. Further, as shown in FIG. 22, the surface on the other surface side (X2 direction side shown in FIG. 19) of the support wall portion 212 has a vertical direction (Z1-Z2 direction) which is the standing direction of the support wall portion 212. It has a thin portion 219 extending in a groove shape in a direction intersecting the direction (Y1-Y2 direction). In this way, by providing the thin portion 219 to the support wall portion 212 with the thin wall portion 219, the amount of warp of the support wall portion 212 can be reduced even when a high temperature is applied. For this reason, it becomes possible to reduce the stress to the solder accompanying a curvature. The place where the thin portion 219 is provided may be changed to an appropriate place depending on the shape, size, thickness, etc. of the support wall portion 212. In the switch device 1 according to the present embodiment, FIG. As shown by hatching, the thin portion 219 is formed so as to correspond to the portion where the first output terminal 22, the second output terminal 23, the third output terminal 24, the extension portion 28, etc. are embedded. Has been. For this reason, the first output terminal 22, the second output terminal 23, the third output terminal 24, and a part (back side) of the extending portion 28 and the like are exposed to the thin portion 219. By exposing these from the thin-walled portion 219, it is possible to form the metal plate while pressing the metal plate during insert molding. By molding while pressing the metal plate, it is possible to prevent the position of the metal plate from being shifted by the flowing resin, and to stably form the attachment portion 29 (see FIG. 20) at a predetermined position.

  As shown in FIG. 23, the holding member 2 formed in this way has two resistors 9 in the concave portion 215d provided on one surface side (X1 direction side shown in FIG. 19) of the support wall portion 212 in the vertical direction. Are arranged side by side (chip resistor R1 on the upper side and chip resistor R2 on the lower side), and one resistor 9 (chip resistor R3) is arranged in the recess 215e. The resistor 9 (chip resistor) is disposed so that the attachment portion 29 provided in a pair in the recess 215d and the recess 215e is bridged, and the electrode portion 91 and the attachment portion 29 face each other. Note that the resistor 9 (chip resistor) is disposed so as to be in contact with the protrusion 218 provided in the recess 215d and the recess 215e, respectively. Since the protruding portion 218 is formed so as to protrude from the surface on which the mounting portion 29 is provided to the resistor 9 (chip resistor) side than the mounting portion 29, the protruding portion 218 is disposed so as to face the protruding portion 218. In the resistor 9 (chip resistor) thus formed, at least a part of the mounting portion 29 and the electrode portion 91 are spaced apart from each other. Thus, by disposing the resistor 9 (chip resistor) so as to face the protruding portion 218, at least a part of the attachment portion 29 and the electrode portion 91 can be easily separated. Solder SO is provided between the electrode portion 91 and the attachment portion 29 of the resistor 9 that are spaced apart, and the electrode portion 91 is attached to the attachment portion 29 by soldering. By providing solder between at least a part of the mounting portions 29 that are opposed to each other and the electrode portions 91 of the chip resistor, the amount of solder that connects the electrode portions 91 and the mounting portions 29 can be reduced. Can be increased. Therefore, the soldering strength can be improved and the soldering can be surely performed. Moreover, since the volume of the solder provided between the electrode part 91 and the attachment part 29 can be increased, even if the holding member 2 expands due to heat and stress occurs in the solder, the stress accompanying the stress is increased. Since they can be dispersed, the electrical connection between the attachment portion 29 and the electrode portion 91 can be made difficult to be impaired.

  Next, the first output terminal 22, the second output terminal 23, the third output terminal 24, the extending portion 28a, the extending portion 28b, and the extending portion that are integrally formed on the holding member 2 by insert molding. 28c will be described. As shown in FIG. 24, the first output terminal 22 has a common fixed contact 25 at an end portion extending upward (Z1 direction) and in a direction (Y1 direction) where the second output terminal 23 is present. It has the extended part 28c extended. A part (29e3) of the attachment portion 29 to which the chip resistor R2 is attached is formed at the distal end portion of the extension portion 28c. Above the extension part 28c, the extension part 28b is provided in parallel with being spaced apart from the extension part 28c. A part (29e2) of the attachment portion 29 to which the chip resistor R1 is attached is formed at one end portion (end portion on the Y1 direction side) of the extension portion 28b. Further, a second switching fixed contact 27 is formed at the other end portion (end portion on the Y2 direction side) of the extending portion 28b. The second output terminal 23 is disposed below the extending portion 28c, and is attached to the mounting portion 29e1 extending upward while being curved in a direction of the third output terminal 24 so as to avoid the extending portion 28c. Is formed. The attachment portion 29e1 faces the attachment portion 29e3 and extends to a position facing the attachment portion 29e2. The attachment portion 29 to which the chip resistor R1 is attached and a part of the attachment portion 29 to which the chip resistor R2 is attached are provided. Form. Above the extension part 28b and the attachment part 29e1, the extension part 28a is provided in parallel and spaced apart. A part (29e4) of the attachment portion 29 to which the chip resistor R3 is attached is formed at one end portion (end portion on the Y1 direction side) of the extension portion 28a. In addition, a first switching fixed contact 26 is formed at the other end (end on the Y2 direction side) of the extending portion 28a. The first switching fixed contact 26 is disposed at a position facing the second switching fixed contact 27, and the first switching fixed contact 26 and the second switching fixed contact 27 are not electrically connected. The third output terminal 24 extends upward to a position facing the attachment portion 29e4, and a part (29e5) of the attachment portion 29 to which the chip resistor R3 is attached is formed at the extended tip portion. ing. With respect to the first output terminal 22, the second output terminal 23, the third output terminal 24, the extension part 28a, the extension part 28b, and the extension part 28c arranged in this way, the chip resistor R1 is The attachment portion 29e1 and the attachment portion 29e2 are attached so as to be bridged. The chip resistor R2 is attached so as to bridge the attachment portion 29e1 and the attachment portion 29e3, and the chip resistor R3 is attached so as to bridge the attachment portion 29e4 and the attachment portion 29e5.

  In the switch device 1 according to the present embodiment, the first contact portion 73 of the movable contact 7 is always in contact with the common fixed contact 25. On the other hand, the second contact portion 75 of the movable contact 7 is in contact with the first switching fixed contact 26 in the initial state where the moving member 6 is not in contact with the detection target. Further, when the moving member 6 (see FIG. 16) contacts the detection target and slides downward (Z2 direction), the movable contact 7 slides and the second contact portion 75 switches to the first switching. After leaving the fixed contact 26, it comes into contact with the second switching fixed contact 27. As described above, when the moving member 6 is in the initial state, the movable contact 7 is in contact with the common fixed contact 25 and the first switching fixed contact 26, and when the moving member 6 is pushed down, the common fixed contact 25. The second switching fixed contact 27 comes into contact with the movable contact 7 and the switch is switched.

  In the switch device 1 according to the present embodiment, as shown in FIG. 25, a contact a1 (first switching fixed contact 26) is connected to a common terminal COM corresponding to the output terminal 22 via a movable contact S5 (movable contact 7). It is connected. The contact a1 is connected to one end of the chip resistor R3, and the other end of the chip resistor R3 is connected to a terminal NC corresponding to the output terminal 24. Further, one end of the chip resistor R2 is connected to the common terminal COM corresponding to the output terminal 22, and the other end of the chip resistor R2 is connected to a terminal NO corresponding to the output terminal 23. In addition, one end of the chip resistor R1 is connected to the terminal NO corresponding to the output terminal 23, and the other end of the chip resistor R1 is connected to the contact a2 (second switching fixed contact 27). In the switch device 1 configured in this way, the contact state with the contacts a1 and a2 is switched by the movement of the movable contact S5 (movable contact 7).

  In the detection circuit described above, in the initial state, the movable contact 7 (S5) is in contact with the first switching fixed contact 26 (contact a1), and the chip resistor R3 is used as a resistance value between the output terminal 22 and the output terminal 24. The resistance value of is detected. On the other hand, when the movable contact 7 (S5) is pushed down and moved to a position where it comes into contact with the second switching fixed contact 27 (contact a2), the resistance value of the chip resistor R1 is set as the resistance value between the output terminal 22 and the output terminal 23. The value obtained by integrating the value and the resistance value of the chip resistor R2 is divided by the sum of the resistance value of the chip resistor R1 and the resistance value of the chip resistor R2 (ie, (R1 × R2) / ( R1 + R2)) will be detected.

  Even in this detection circuit, when the electric wire connected to the external device such as the ECU is in a disconnected state, no current flows regardless of the connection state of the movable contact S5. The resistance value viewed from the circuit side is detected as infinite. Further, when the three wires connected to the external device are short-circuited, the current flows short-circuited regardless of the connection state of the movable contact S5. The observed resistance value is detected as zero.

  As described above, in the switch device 1 according to the present embodiment, the first switching fixed contact 26, the second switching fixed contact 27, and the common fixed contact 25 are connected to the holding member 2 (plate-like base 21). The upper portions of the case 3 are extended to form extension portions 28a, 28b, and 28c, and chip resistors R1, R2, and R3 are attached to the attachment portions 29 formed in part of the extension portions 28a, 28b, and 28c. It is attached. That is, the mounting portions 29e1, 29e2, 29e3, 29e4, and 29e5 of the chip resistors R1, R2, and R3 are positioned above the base portion 21 (see FIG. 20) of the holding member 2 that holds the output terminals 22, 23, and 24. Therefore, even after the output terminals 22, 23, 24 are embedded in the holding member 2, the chip resistors R1, R2, R3 can be easily attached. Moreover, it is not necessary to provide mounting components for the chip resistors R1, R2, and R3 outside the housing 4 of the switch device 1, and the switch device can be miniaturized as much as the installation space can be reduced.

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications. For example, the switch device 1 according to the present embodiment is configured by a push switch in which the clip-shaped movable contact 7 is in contact with the first switching fixed contact 26 and the second switching fixed contact 27 on both sides, but is not limited thereto. It is also possible to configure a slide switch in which a slider-like movable contact slides on one side between the first switching fixed contact and the second switching fixed contact.

  In addition, as another embodiment, only one example of the embodiment in which the protruding portion 218 is provided is shown. However, in each of the above embodiments, the protruding portion is different from the embodiment in which the protruding portion 218 is not provided. 218 may be applied.

  In another embodiment, the resistor 9 is arranged so as to be in contact with the protruding portion 218 so that the electrode portion 91 and the attachment portion 29 are separated from each other, and the electrode portion 91 and the attachment portion 29 are disposed between each other. The example which arrange | positions solder and connects the electrode part 91 and the attaching part 29 via solder was shown. In order to obtain the same effect, as shown in FIG. 26, a structure may be adopted in which a recess CV is provided in at least a part of the attachment portion 29 and the inner bottom surface of the recess CV is separated from the electrode portion 91. Thus, by providing the recess CV in at least a part of the attachment part 29, it is possible to reliably separate at least a part of the attachment part 29 and the electrode part 91, and at least a part of the attachment part 29 and the chip resistor By providing the solder SO between the electrode portion 91 and the electrode portion 91, the amount of solder SO connecting the electrode portion 91 and the attachment portion 29 can be increased. Therefore, the soldering strength can be improved and the soldering can be surely performed. FIG. 26 is a schematic cross-sectional view showing the structure of the above modification.

  Moreover, in the said embodiment, about the magnitude | size, shape, etc. which are illustrated by the attached drawing, it is not limited to this, It is possible to change suitably in the range which exhibits the effect of this invention. In addition, various modifications can be made without departing from the scope of the object of the present invention.

DESCRIPTION OF SYMBOLS 1 Switch apparatus 2 Holding member 21 Base part 211 Step part 212 Support wall part 213 Thick part 214 Insulation part 215 (215a, 215b, 215c, 215d, 215e) Recess 216 Partition part 217 Support part 218 Protrusion part 219 Thin part 22 1st Output terminal 221 connecting portion 23 second output terminal 231 connecting portion 24 third output terminal 241 connecting portion 25 common fixed contact 26 first switching fixed contact 27 second switching fixed contact 28 (28a, 28b, 28c) extending Part 29 (29a1, 29a2, 29b1, 29b2, 29c1, 29d1, 29d2, 29e1, 29e2, 29e3, 29e4, 29e5) mounting part 3 case 31 flat plate part 311 penetrating part 312 retaining part 32 side wall part 33 opening part 4 housing 5 cover member 51 collar part 52 dome part 53 Through hole 6 Moving member 61 Flat part 62 Side wall part 63 Operation part 64 Hollow part 7 (S1, S2, S3, S4, S5) Movable contact 71 Base 72 First connection part 73 First contact part 74 Second contact part Connecting part 75 Second contact part 8 Coil spring (biasing member)
9 (R1, R2, R3) Chip resistors (resistors)
91 Electrode CV Recess

Claims (12)

A housing having a penetrating portion;
A moving member provided with an operating portion exposed from the penetrating portion;
An urging member for returning the moving member to the initial state before the operation;
A movable contact operated by movement of the moving member;
A common fixed contact that is always in contact with this movable contact;
A first switching fixed contact that comes into contact with the movable contact in an initial state where the operation unit is not operated and is not in contact with the movable contact in accordance with an operation to the operation unit;
A second switching fixed contact that is in non-contact with the movable contact in an initial state where the operation unit is not operated and contacts the movable contact in accordance with an operation to the operation unit;
At least two output terminals extending outward from the housing;
A switch device comprising a resistor for obtaining a resistance value between the at least two output terminals,
The housing has a box-like case having the penetrating portion and opened downward;
A holding member that embeds the output terminal and closes the lower part of the case;
At least two of the common fixed contact, the first switching fixed contact, and the second switching fixed contact are extended in the case above the holding member to form an extension, and the extension A switch device, wherein the resistor is attached to a mounting portion formed in a part of the switch.   The common fixed contact, the first switching fixed contact, the second switching fixed contact, and the movable contact are provided on one side of the housing, and the extending portion extends to the other side in the housing. The resistor is disposed at least on the other side of the common fixed contact, the first switching fixed contact, the second switching fixed contact, and the movable contact. The switch device according to 1.   3. The switch device according to claim 1, wherein the holding member is made of resin, and a support wall portion is erected, and the extension portion is supported by the support wall portion. .   The resistor is a chip resistor having electrode portions at both ends, and the electrode portion is attached to the attachment portion by soldering, and at least a part of the attachment portion and the electrode portion are opposed to each other. 4. The switch device according to claim 3, wherein the switch device is disposed, and the solder is provided between at least a part of the attachment portion and the electrode portion. The support wall is provided with a protruding portion that protrudes toward the chip resistor from the mounting portion,
The switch device according to claim 4, wherein the chip resistor is disposed so as to face the protruding portion, and at least a part of the attachment portion and the electrode portion are separated from each other.   The switch device according to claim 4, wherein a concave portion is provided in at least a part of the attachment portion, and an inner bottom surface of the concave portion is separated from the electrode portion. In order to correspond to the electrode portions provided at both ends of the chip resistor, a pair of the attachment portions are provided apart from each other with a resin constituting the support wall portion interposed therebetween,
The thickness of the resin positioned between the pair of attachment portions is formed to be thinner than the thickness of the resin in other portions of the support wall portion. The switch device according to 1.   The chip resistor is attached to one surface side of the support wall portion, and the surface on the other surface side of the support wall portion intersects the vertical direction as the standing direction of the support wall portion and the vertical direction. The switch device according to claim 4, further comprising a thin portion extending in a groove shape.   The support wall has a thickness that embeds the periphery of at least a part of the extension portion located between the common fixed contact, the first switching fixed contact, the second switching fixed contact, and the mounting portion. The switch device according to claim 3, further comprising a meat part.   The switch device according to any one of claims 3 to 9, wherein a concave portion is provided in the support wall portion, and the attachment portion is formed by exposing a part of the extension portion in the concave portion. .   Crossing the extending direction of the support wall between the movable contact, the common fixed contact, the first switching fixed contact, the switch contact portion including the second switching fixed contact, and the resistor mounting portion. The switch device according to any one of claims 3 to 10, further comprising a partition wall portion projecting in a direction to be moved. The common fixed contact, the first switching fixed contact, the second switching fixed contact, the extension portion, and the mounting portion are arranged on substantially the same plane, and the support wall portion is separated from the side wall of the case. The switch device according to claim 3, wherein the switch device is a switch device.