JP7321110B2 - electric valve device - Google Patents

Description

The technology disclosed in this specification relates to an electric valve device that is driven to open and close by an electric motor.

Conventionally, as this type of technology, for example, a technology (EGR control device) described in Patent Document 1 below is known. This device includes an electrically operated EGR valve that adjusts the flow rate of EGR gas recirculated from the engine to the intake passage. The EGR valve includes a conductive casing, a flow path formed in the casing, a valve body provided in the flow path, an electric motor provided in the casing for opening and closing the valve body, and an electric motor. A speed reduction mechanism provided on the casing for driving connection to the body and a cover covering the speed reduction mechanism. An opening sensor for detecting the opening of the valve body is provided inside the cover. Further, the connector formed on the cover is provided with a ground terminal to which a ground wire extending from at least the opening sensor is connected.

WO2005/052347

In the technique described in Patent Document 1, grounding is performed by connecting a grounding wire extending from the opening sensor to a grounding terminal of a connector formed on the cover. Here, if the electric motor is a motor with brushes, sparks are generated inside the motor due to contact between the brushes and the commutator, and radio noise may adversely affect radios, televisions, and the like. Here, it is well known that a conductive casing is grounded as a countermeasure against radio noise in an electric valve device.

However, in electric valve devices such as EGR valves, where corrosion due to oxides in EGR gas is a problem, an insulating member such as a Teflon coating is sometimes provided on the surface of the casing to prevent corrosion. Therefore, it is difficult to wire the ground wire in a space-saving manner.

This disclosed technology has been made in view of the above circumstances, and its object is to provide a space-saving ground without wiring a ground wire even in an electric valve device having an insulating member on the surface. An object of the present invention is to provide an electric valve device that can be implemented.

In order to achieve the above object, the technique described in claim 1 provides a conductive valve casing, a conductive mating member connected to the valve casing, and an insulating material provided between the valve casing and the mating member. the member and the valve casing including a first mating surface; the mating member including a second mating surface that is joined to the first mating surface of the valve casing via an insulating member; connection holding means for holding a state in which the valve casing and the mating member are connected by joining the first mating surface of the casing and the second mating surface of the mating member via an insulating member; WHEREIN: Between a valve casing and a mating member, when a 1st mating surface is joined to a 2nd mating surface via an insulating member, while avoiding an insulating member, a valve The purpose is to provide a conductive member for conducting the casing and the mating member.

According to the configuration of the above technique, in order to connect the conductive valve casing and the conductive mating member, the first mating surface of the valve casing is mated to the second mating surface of the mating member via the insulating member. be matched. At this time, the conductive member avoids the insulating member and conducts the valve casing and the mating member at the same time as the joining.

In order to achieve the above object, the technology described in claim 2 is the technology described in claim 1, wherein the conductive member is a positioning pin for positioning the connected valve casing and the mating member relative to each other. At least one of the first mating surface and the second mating surface is provided with a positioning pin, the other is provided with a pin hole, and the positioning pin penetrates the insulating member and is press-fitted into the pin hole. and

According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, since the conductive member is the positioning pin between the valve casing and the mating member, there is no need to provide a conductive member exclusively for conduction. . Further, by press-fitting the positioning pin into the pin hole, electrical continuity between the valve casing and the mating member is completed, and the positioning pin is sandwiched between the valve casing and the mating member.

In order to achieve the above object, the technology described in claim 3 is based on the technology described in claim 2, with the purport of forming a projection on the outer periphery of the positioning pin press-fitted into the pin hole.

According to the configuration of the above technique, in addition to the effect of the technique described in claim 2, when the positioning pin is press-fitted into the pin hole, the projection formed on the outer circumference of the positioning pin bites into the inner circumference of the pin hole, or It deforms and firmly connects to the inner circumference of the pin hole.

In order to achieve the above object, according to the technology described in claim 4, in the technology described in claim 2, the positioning pin is formed such that the outer diameter of the portion press-fitted into the pin hole is larger than the inner diameter of the pin hole, The gist is that the portion to be press-fitted is formed so as to be elastically contractible.

According to the configuration of the above technique, in addition to the effect of the technique described in claim 2, when the positioning pin is press-fitted into the pin hole, the portion that is press-fitted is elastically reduced in diameter to fit the inner circumference of the pin hole. Because of the pressure contact, the positioning pin is firmly connected to the inner circumference of the pin hole.

In order to achieve the above object, the technology described in claim 5 is the technology described in claim 1, wherein the conductive member includes a positioning pin for positioning the connected valve casing and the mating member relative to each other. , at least one of the first mating surface and the second mating surface is provided with a positioning pin, the other is provided with a pin hole, the positioning pin penetrates the insulating member, is incorporated into the pin hole, and is inserted into the pin hole. is that a conductive spring is provided so as to contact the bottom of the hole and the tip of the positioning pin.

According to the configuration of the above technique, in addition to the effects of the technique described in claim 1, since the conductive member is the positioning pin between the valve casing and the mating member, there is no need to provide a conductive member exclusively for conduction. Further, the positioning pin is incorporated into the pin hole, and the conductive spring contacts the bottom of the hole and the tip of the positioning pin, thereby completing conduction between the valve casing and the mating member, and the positioning pin and the conductive spring are connected to the valve casing. It is sandwiched between the mating member.

In order to achieve the above object, the technology described in claim 6 is the technology described in claim 1, wherein the conductive member is a positioning pin for positioning the connected valve casing and the mating member relative to each other. At least one of the first mating surface and the second mating surface is provided with a positioning pin, the other is provided with a pin hole, the positioning pin penetrates the insulating member, is incorporated into the pin hole, and has a tip end thereof The purpose is to abut on the hole bottom of the pin hole.

According to the configuration of the above technique, in addition to the effects of the technique described in claim 1, since the conductive member is the positioning pin between the valve casing and the mating member, there is no need to provide a conductive member exclusively for conduction. Further, when the positioning pin is incorporated into the pin hole and the tip of the pin contacts the hole bottom of the pin hole, electrical continuity between the valve casing and the mating member is completed, and the positioning pin is sandwiched between the valve casing and the mating member. be

In order to achieve the above object, the technology described in claim 7 is the technology described in claim 6, with the purport of forming a protrusion at the tip of the positioning pin.

According to the configuration of the above technique, in addition to the effect of the technique described in claim 6, when the positioning pin comes into contact with the hole bottom of the pin hole, the protrusion at the tip of the positioning pin bites into the hole bottom or deforms. Due to the contact, the positioning pin is firmly connected to the bottom of the hole.

In order to achieve the above object, the technique according to claim 8 is the technique according to claim 1, wherein the conductive member is a sphere, and the first mating surface or the second mating surface is provided with a recess. It is intended that the sphere is press-fitted into the recess and part of the sphere penetrates the insulating member and contacts the second mating surface or the first mating surface.

According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, when connecting the valve casing and the mating member, by joining the first mating surface and the second mating surface together, the concave portion is formed. A portion of the press-fitted sphere as the conductive member penetrates the insulating member and contacts the second mating surface or the first mating surface. As a result, the connection between the valve casing and the mating member is completed, and the ball is sandwiched between the valve casing and the mating member.

In order to achieve the above object, the technology described in claim 9 is the technology described in claim 1, wherein the conductive member is a spring member, and the first mating surface or the second mating surface has a concave portion. A spring member is incorporated into the recess and a portion of the spring member extends through the insulating member to contact either the second mating surface or the first mating surface.

According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, when connecting the valve casing and the mating member, by joining the first mating surface and the second mating surface together, the concave portion is formed. A portion of the spring member as an incorporated conductive member penetrates the insulating member and elastically contacts the second mating surface or the first mating surface. As a result, electrical continuity between the valve casing and the mating member is completed, and the spring member is sandwiched between the valve casing and the mating member.

In order to achieve the above object, the technique according to claim 10 is the technique according to claim 1, wherein the conductive member is a compression pin configured to be compressible by a built-in spring member, and the first A recess is provided in the mating surface or the second mating surface, a compression pin is incorporated in the recess, and the tip of the compression pin penetrates the insulating member and contacts the second mating surface or the first mating surface. with the purpose of

According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, when connecting the valve casing and the mating member, by joining the first mating surface and the second mating surface together, the concave portion is formed. A tip of a compression pin as an incorporated conductive member passes through the insulating member and elastically contacts the second mating surface or the first mating surface. This completes electrical connection between the valve casing and the mating member, and the compression pin is sandwiched between the valve casing and the mating member.

In order to achieve the above object, the technology described in claim 11 is the technology described in claim 1, wherein the second mating surface includes an exposed surface protruding from the bonding range with the first mating surface. , the conductive member is a contact provided on the valve casing so as to protrude outward from the first mating surface and contact the exposed surface.

According to the configuration of the above technique, in addition to the effect of the technique described in claim 1, when connecting the valve casing and the mating member, by joining the first mating surface and the second mating surface together, the first A contact, which is a conductive member projecting outward from the mating surface of the second mating surface, contacts the exposed surface of the second mating surface. This completes electrical connection between the valve casing and the mating member.

According to the technique of claim 1, even in an electric valve device having an insulating member on the surface, space-saving grounding can be performed without wiring a ground wire.

According to the technique of claim 2, in addition to the effect of the technique of claim 1, implementation of grounding can be simplified, and the positioning pin functioning as the ground wiring can be protected.

According to the technique of claim 3, in addition to the effect of the technique of claim 2, it is possible to improve the reliability of grounding by the positioning pin.

According to the technique of claim 4, in addition to the effect of the technique of claim 2, it is possible to improve the reliability of grounding by the positioning pin. Moreover, the load applied when the valve casing and the mating member are electrically connected by the positioning pin can be reduced.

According to the technique of claim 5, in addition to the effect of the technique of claim 1, it is possible to simplify the implementation of grounding and protect the positioning pin and the conductive spring that function as ground wiring. . Moreover, the load applied when the valve casing and the mating member are electrically connected by the positioning pin can be reduced.

According to the technique of claim 6, in addition to the effect of the technique of claim 1, implementation of grounding can be simplified, and the positioning pin functioning as the ground wiring can be protected. Moreover, the load applied when the valve casing and the mating member are electrically connected by the positioning pin can be reduced.

According to the technique of claim 7, in addition to the effect of the technique of claim 6, it is possible to improve the reliability of grounding by the positioning pin.

According to the technique of claim 8, in addition to the effect of the technique of claim 1, implementation of grounding can be simplified, and the sphere functioning as the ground wiring can be protected. In addition, the load when the valve casing and the mating member are electrically connected by the spherical body can be reduced.

According to the technique of claim 9, in addition to the effect of the technique of claim 1, implementation of grounding can be simplified, and the spring member functioning as the ground wiring can be protected. Moreover, the load applied when the valve casing and the mating member are electrically connected by the spring member can be reduced.

According to the technique of claim 10, in addition to the effect of the technique of claim 1, implementation of grounding can be simplified, and the compression pin functioning as the ground wiring can be protected. Moreover, the load applied when the valve casing and the mating member are electrically connected by the compression pin can be reduced.

According to the technique of claim 11, in addition to the effect of the technique of claim 1, implementation of grounding can be simplified. Moreover, the load applied when the valve casing and the mating member are electrically connected by the contactor can be reduced.

FIG. 2 is a cross-sectional view schematically showing a parallel-flow EGR cooler unit provided with a bypass valve according to the first embodiment; The perspective view which concerned with 1st Embodiment and looked the bypass valve from the front side. Sectional drawing which concerns on 1st Embodiment, and shows disassembled a part of connection structure of each member. Sectional drawing which concerns on 1st Embodiment, and shows disassembled each member etc. in the part enclosed with the chain-line square in FIG. Sectional drawing which concerns on 1st Embodiment and shows the state which mutually connected each member. Sectional drawing according to FIG. 4 which concerns on 2nd Embodiment, and shows explode|disassembled some connection structures, such as each member. The bottom view which concerns on 2nd Embodiment and shows a positioning pin. Sectional drawing according to FIG. 4 which concerns on 3rd Embodiment, and shows explode|disassembled some connection structures, such as each member. Sectional drawing which concerns on 3rd Embodiment and shows the state which mutually connected each member. Sectional drawing according to FIG. 4 which concerns on 4th Embodiment, and shows disassembled some connection structures, such as each member. Sectional drawing which concerns on 4th Embodiment and shows the state which mutually connected each member. Sectional drawing according to FIG. 4 which concerns on 5th Embodiment and shows disassembled some connection structures, such as each member. Sectional drawing which concerns on 5th Embodiment and shows the state which mutually connected each member. Sectional drawing according to FIG. 4 which concerns on 6th Embodiment and shows disassembled some connection structures, such as each member. Sectional drawing which concerns on 6th Embodiment and shows the state which mutually connected each member. Sectional drawing according to FIG. 4 which concerns on 7th Embodiment, and shows disassembled some connection structures, such as each member. The perspective view which concerns on 7th Embodiment and shows a spring member. Sectional drawing which concerns on 7th Embodiment and shows the state which mutually connected each member. Sectional drawing according to FIG. 3 which concerns on 8th Embodiment, and shows disassembled some connection structures, such as each member. Sectional drawing according to FIG. 4 which concerns on 9th Embodiment and shows explode|disassembled some connection structures, such as each member. Sectional drawing which concerns on 9th Embodiment and shows a compression pin. Sectional drawing according to FIG. 3 which concerns on 10th Embodiment, and shows disassembled some connection structures, such as each member. Sectional drawing according to FIG. 4 which concerns on another embodiment, and shows explode|disassembled some connection structures, such as each member.

Several embodiments in which the electric valve device is embodied in an EGR cooler bypass valve provided in an EGR cooler unit of an EGR device will be described below.

<First Embodiment>
First, the first embodiment will be described in detail with reference to the drawings.

[About the EGR cooler unit]
FIG. 1 shows a schematic cross-sectional view of a parallel flow type EGR cooler unit 2 provided with an EGR cooler bypass valve (hereinafter simply referred to as "bypass valve") 1 of this embodiment. The EGR cooler unit 2 is provided in the middle of an EGR passage (not shown), and includes a cooler casing 3, an inlet pipe 4 provided on the inlet side of the cooler casing 3, and a bypass provided on the outlet side of the cooler casing 3. It comprises a valve 1 and an outlet pipe 5 . As is well known, the EGR passage is connected to an intake passage (not shown) in order to recirculate part of exhaust gas discharged from an engine (not shown) to an exhaust passage (not shown) as EGR gas to the engine. The cooler casing 3 includes a cooler passage 6 , a bypass passage 7 bypassing the cooler passage 6 , and a branch portion 8 branching to the inlet 6 a of the cooler passage 6 and the inlet 7 a of the bypass passage 7 . The cooler passage 6 and the bypass passage 7 are arranged parallel to each other. The inlet pipe 4 is connected to the inlet side of the cooler casing 3 and communicates with the branch portion 8 . The inlet side of the bypass valve 1 is connected to the outlet side of the cooler casing 3 and communicates with the outlet 6 b of the cooler passage 6 and the outlet 7 b of the bypass passage 7 . The outlet pipe 5 is connected to the outlet side of the bypass valve 1 . The cooler passage 6 is provided with a heat exchanger 9 through which engine cooling water flows. An EGR cooler 10 is configured by the cooler passage 6 and the heat exchanger 9 . The inlet pipe 4 and the outlet pipe 5 are each connected to an EGR passage (pipe). The EGR gas that has flowed into the inlet pipe 4 is cooled by the heat exchanger 9 by passing through the cooler passage 6 . EGR gas passing through the bypass passage 7 is not cooled. In this embodiment, the cooler casing 3 and the outlet pipe 5 are each made of a conductive material (eg, aluminum). In this embodiment, the bypass valve 1 and the cooler casing 3 and outlet pipe 5 connected thereto constitute an electric valve device.

[About the bypass valve]
FIG. 2 shows a front perspective view of the bypass valve 1 of this embodiment. As shown in FIGS. 1 and 2, the bypass valve 1 is configured to simultaneously adjust the flow rate of EGR gas passing through the EGR cooler 10 and the flow rate of EGR gas passing through the bypass passage 7 . That is, the bypass valve 1 includes a valve casing 11, two valve bodies 12 and 13, a valve stem 14, a speed reduction mechanism 15 and a DC motor 16 as main components. The valve casing 11 includes two flow paths 17 and 18 and a recess (not shown) whose open end is closed by an end frame 20 . The valve casing 11 is made of a conductive material (eg, aluminum), and the end frame 20 is made of a synthetic resin material. The two valve bodies 12 , 13 , the valve shaft 14 and the DC motor 16 are mainly provided on the valve casing 11 side, and the reduction mechanism 15 is mainly provided between the recess of the valve casing 11 and the end frame 20 . The DC motor 16 is drivingly connected to the valve shaft 14 via the speed reduction mechanism 15 . The end frame 20 is fixed to the valve casing 11 via a plurality of clips 30. As shown in FIG.

In FIG. 2 , the valve casing 11 includes a cooler passage 17 communicating with the outlet 6 b of the cooler passage 6 and a bypass passage 18 communicating with the outlet 7 b of the bypass passage 7 . EGR gas that has passed through the EGR cooler 10 flows through the cooler flow path 17 . EGR gas that has passed through the bypass passage 7 flows through the bypass passage 18 . A plate-shaped cooler valve body 12 for opening and closing the cooler flow path 17 is arranged in the cooler flow path 17 . A plate-like bypass valve body 13 for opening and closing the bypass channel 18 is arranged in the bypass channel 18 . In this embodiment, the cooler valve body 12 and the bypass valve body 13 are butterfly valve bodies, and are integrally fixed to one valve shaft 14 . The valve shaft 14 is provided in the valve casing 11 so as to pass through the cooler flow path 17 and the bypass flow path 18, and is rotatably supported via bearings (not shown). The cooler valve body 12 and the bypass valve body 13 are fixed to the valve shaft 14 while being out of phase with each other by a predetermined angle (approximately 80°). Therefore, by rotating the valve shaft 14 in one direction, the cooler valve body 12 is rotated in the valve opening direction and the bypass valve body 13 is rotated in the valve closing direction. On the other hand, by rotating the valve shaft 14 in the reverse direction, the cooler valve body 12 is rotated in the valve closing direction and the bypass valve body 13 is rotated in the valve opening direction. FIG. 2 shows a state in which the cooler valve body 12 is fully open and the bypass valve body 13 is fully closed.

As shown in FIGS. 1 and 2, the valve casing 11 has an outlet-side mating surface 21 on its front side and an inlet-side mating surface 22 on its rear side. As shown in FIG. 1 , the outlet-side mating surface 21 is mated with the inlet-side mating surface 32 of the outlet pipe 5 , and the inlet-side mating surface 22 is mated with the outlet-side mating surface 31 of the cooler casing 3 . . As shown in FIG. 2 , a plurality of bolt holes 24 are formed in the outer peripheral portion of the valve casing 11 so as to pass through the outlet-side mating surface 21 and the inlet-side mating surface 22 . Bolts 25 (see FIG. 3) for fixing the valve casing 11 between the cooler casing 3 and the outlet pipe 5 are inserted through these bolt holes 24 . Further, as shown in FIG. 2 , a plurality of pin holes 27 are formed adjacent to the plurality of bolt holes 24 in the outlet side mating surface 21 . A plurality of pin holes (not shown) are formed adjacent to the plurality of bolt holes 24 on the inlet side mating surface 22 as well.

[Connection structure between valve casing, cooler casing, and outlet pipe]
Next, a connection structure between the valve casing 11 of the bypass valve 1, the cooler casing 3, and the outlet pipe 5 will be described. In this embodiment, since the bypass valve 1 is an electric valve that is driven to open and close by the DC motor 16, it may generate radio noise. Therefore, this embodiment proposes a connection structure capable of simultaneously grounding as a countermeasure against radio noise. FIG. 3 shows a partially exploded sectional view of the connecting structure of the members 3, 11 and 5. As shown in FIG. FIG. 4 shows a cross-sectional view of the members 11, 5, etc. in the portion surrounded by the dashed-line square S1 in FIG. FIG. 5 shows a cross-sectional view of the state in which the members 11, 5, etc. are connected to each other. In FIG. 3, the valve casing 11 is sandwiched between the cooler casing 3 on the upper side and the outlet pipe 5 on the lower side. The cooler casing 3 and the outlet pipe 5 correspond to an example of mating members in this disclosed technique. Gaskets 34 are arranged between the valve casing 11 and the cooler casing 3 and between the valve casing 11 and the outlet pipe 5, respectively. The gasket 34 can be made of metal such as stainless steel, for example. Also, the inlet-side mating surface 22 and the outlet-side mating surface 21 of the valve casing 11 are each coated with a Teflon coating 35 (indicated by thick lines in FIG. 3). The thickness of this Teflon coating 35 can be set, for example, in the range of "15 μm to 47 μm". The Teflon coating 35 corresponds to an example of the insulating member in this disclosed technique.

In this embodiment, the inlet-side mating surface 22 of the valve casing 11 is joined to the outlet-side mating surface 31 of the cooler casing 3 via the Teflon coating 35 and the gasket 34 . Also, the outlet side mating surface 21 of the valve casing 11 is joined to the inlet side mating surface 32 of the outlet pipe 5 via the Teflon coating 35 and the gasket 34 . The outlet-side mating surface 21 and the inlet-side mating surface 22 of the valve casing 11 correspond to an example of the first mating surface in this disclosed technique. On the other hand, the outlet side mating surface 31 of the cooler casing 3 and the inlet side mating surface 32 of the outlet pipe 5 correspond to an example of the second mating surface in this disclosed technology.

As shown in FIG. 3, the valve casing 11 is formed with the bolt holes 24 described above. Correspondingly, bolt holes 37 and 38 are also formed in the cooler casing 3 and the outlet pipe 5 so as to match the bolt holes 24 of the valve casing 11 . Through holes 34a (only the through holes 34a of the gasket 34 are shown) are formed in the gasket 34 and the Teflon coating 35 so as to match the bolt holes 24, 37 and 38. As shown in FIG. A tightening bolt 25 is inserted through these bolt holes 24, 37, 38 and through hole 34a. A male thread 25 a is formed at the tip of the bolt 25 , and a female thread 38 a is formed in the bolt hole 38 of the outlet pipe 5 . Therefore, by screwing the male thread 25a of the bolt 25 inserted through each of the bolt holes 24, 37, 38 into the female thread 38a, the valve casing 11, the cooler casing 3 and the outlet pipe 5 are connected via the Teflon coating 35 and the gasket 34. to tighten. As a result, the outlet-side mating surface 21 (first mating surface) of the valve casing 11 and the inlet-side mating surface 32 (second mating surface) of the outlet pipe 5 (mating member) are aligned with positioning pins 29 (electroconductive) to be described later. The connection between the valve casing 11 and the outlet pipe 5 is maintained by joining them together via the member). In this embodiment, the bolt holes 24, 37, 38 and the bolt 25 correspond to an example of connection holding means in this disclosed technique.

As shown in FIGS. 3 and 4, the outlet side mating surface 21 of the valve casing 11 is formed with the aforementioned pin holes 27 . Another pin hole 28 is formed in the inlet side mating surface 32 of the outlet pipe 5 so as to match the pin hole 27 . Positioning pins 29 made of a conductive material are provided in these pin holes 27 and 28 . Through holes 34b (only the through hole 34b of the gasket 34 is shown) are formed in the gasket 34 and the Teflon coating 35 so as to match the pin holes 27 and 28. As shown in FIG. Here, the pin hole 28 formed in the inlet side mating surface 32 of the outlet pipe 5 corresponds to an example of the pin hole in this disclosed technology. One end of the positioning pin 29 (upper end in FIGS. 3 and 4) is inserted into a pin hole 27 formed in the outlet side mating surface 21 of the valve casing 11, and the other end of the positioning pin 29 (upper end in FIGS. 3, lower end of FIG. 4) penetrates the gasket 34 and the Teflon coating 35 and is adapted to be incorporated into another pin hole 28 formed in the inlet side mating surface 32 of the outlet pipe 5; Thus, when the outlet side mating surface 21 of the valve casing 11 is joined to the inlet side mating surface 32 of the outlet pipe 5 via the Teflon coating 35 and the gasket 34, there is a gap between the valve casing 11 and the outlet pipe 5. A locating pin 29 is provided to connect the valve casing 11 and the outlet pipe 5 while penetrating (avoiding) the Teflon coating 35 and the gasket 34 . In this embodiment, the positioning pin 29 corresponds to an example of a conductive member in this disclosed technique.

As shown in FIGS. 3 and 4, the upper end of the positioning pin 29 is incorporated into the pin hole 27 of the valve casing 11 before the valve casing 11 and the outlet pipe 5 are connected to each other. A predetermined gap 40 is provided between the upper end of the positioning pin 29 and the bottom surface of the pin hole 27 in this state. In this state, the lower end (other end) of the positioning pin 29 protrudes from the pin hole 27, and the protruding length L1 is equal to the depth D1 of the pin hole 28 of the outlet pipe 5 and the depth of the gasket 34. It is set larger than the sum of thickness T1. That is, in this embodiment, the relationship is set to "L1>D1+T1".

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, in the bypass valve 1, the valve shaft 14 is rotatably supported by the valve casing 11, and the valve shaft 14 is connected to the DC motor 16 via the speed reduction mechanism 15. drivingly connected. By rotating the valve shaft 14 with a DC motor 16 or the like to open and close the valve bodies 12 and 13, the EGR gas flow rate in each flow path 17 and 18 is adjusted, and the temperature of the EGR gas flowing out from the EGR cooler unit 2 is adjusted. is regulated.

Here, the cooler casing 3 , the bypass valve 1 and the outlet pipe 5 are tightened with bolts 25 to configure the EGR cooler unit 2 . At this time, in order to connect the conductive valve casing 11 constituting the bypass valve 1 and the conductive outlet pipe 5 (mating member), the outlet side mating surface 21 of the valve casing 11 is coated with Teflon coating 35 (insulating member). and the inlet-side mating surface 32 of the outlet pipe 5 via the gasket 34 . At this time, the positioning pin 29, which is a conductive member, penetrates (avoids) the Teflon coating 35 and the gasket 34 at the same time as joining the valve casing 11 and the outlet pipe 5 so as to conduct each other. Therefore, even in the electric valve device having the Teflon coating 35, which is an insulating member, on the surface, grounding can be performed in a space-saving manner without wiring the ground wire. In the electric valve device having the bypass valve 1 driven by the DC motor 16 as described above, even if radio noise occurs inside the DC motor 16, the noise is transmitted from the valve casing 11 to the positioning pin 29, the outlet pipe 5 and the Since it is grounded through the piping of the EGR passage or the like, it is possible to reduce the adverse effects of radio noise.

According to the configuration of this embodiment, since the conductive member is the positioning pin 29 between the valve casing 11 and the outlet pipe 5, it is not necessary to provide a conductive member exclusively for electrical connection. The lower end of the positioning pin 29 is incorporated into the pin hole 28 and the lower end (tip) of the positioning pin 29 contacts and joins the bottom of the pin hole 28 , so that the upper end of the positioning pin 29 further extends into the pin hole 27 , and the outlet-side mating surface 21 and the inlet-side mating surface 32 are joined without any gap via the Teflon coating 35 (insulating member) and the gasket 34 . As a result, the connection between the valve casing 11 and the outlet pipe 5 is completed, and the positioning pin 29 is sandwiched between the valve casing 11 and the outlet pipe 5 . Therefore, the grounding described above can be simplified, and the positioning pin 29 functioning as the ground wiring can be protected.

<Second embodiment>
Next, a second embodiment will be described in detail with reference to the drawings. In addition, in each embodiment described below, the same code|symbol is attached|subjected about the component equivalent to 1st Embodiment, and description is abbreviate|omitted, and it demonstrates centering on a different point below.

FIG. 6 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connection structure of the members 11, 5, etc. is exploded. This embodiment differs from the first embodiment mainly in the configuration of the positioning pin 51 . FIG. 7 shows the positioning pin 51 in a bottom view. In FIG. 6, the positioning pin 51 is formed such that the outer diameter of the tip portion 51a (lower half in FIG. 6) is slightly smaller than the outer diameter of the base end portion 51b (upper half in FIG. 6). Accordingly, the inner diameter of the pin hole 27 formed in the valve casing 11 is formed to have a size that allows the base end portion 51b of the positioning pin 51 to be press-fitted. The inner diameter of another pin hole 28 formed in the outlet pipe 5 is formed to have substantially the same size as the outer diameter of the tip portion 51 a of the positioning pin 51 . As shown in FIGS. 6 and 7, four projections 51c are formed at equal angular intervals on the outer circumference of the tip portion 51a of the positioning pin 51 and come into contact with the inner circumference of another pin hole 28 by biting into or deforming. formed in These protrusions 51 c have a triangular shape with an acute angle in cross section and extend along the axial direction of the positioning pin 51 .

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, it is possible to obtain actions and effects equivalent to those of the first embodiment. In addition, in this embodiment, when the positioning pin 51 is press-fitted into the pin hole 28, the protrusion 51c formed on the outer circumference of the positioning pin 51 bites into the inner circumference of the pin hole 28 or deforms to contact the pin hole. , it is firmly connected to the inner periphery of the pin hole 28 . Therefore, the reliability of grounding by the positioning pin 51 can be improved. In addition, the press-fitting load is reduced, and the load during assembly (connection) can be reduced.

<Third Embodiment>
Next, a third embodiment will be described in detail with reference to the drawings.

FIG. 8 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connecting structure of the members 11, 5, etc. is exploded. FIG. 9 shows a cross-sectional view of the state in which the members 11, 5, etc. are connected to each other. This embodiment differs from the previous embodiments mainly in the configuration of the positioning pin 52 . In FIG. 8, the positioning pin 52 is formed to have the same outer diameter from its distal end portion 52a to its proximal end portion 52b. 8, the inner diameter of the pin hole 27 formed in the valve casing 11 is formed to have a size that allows the base end portion 52b of the positioning pin 52 to be press-fitted. The inner diameter of another pin hole 28 formed in the outlet pipe 5 is formed to have a size that allows the tip portion 52a of the positioning pin 52 to be press-fitted. That is, the outer diameter of the tip portion 52a to be press-fitted into the pin hole 28 is formed slightly larger than the inner diameter of the pin hole 28, and the tip portion 52a is formed so as to be elastically contractible. In this embodiment, the tip portion 52a of the positioning pin 52 is formed with a groove 52c in the center, and the tip portion 52a is divided into two with the groove 52c therebetween. Therefore, as shown in FIG. 9, when the tip portion 52a of the positioning pin 52 is press-fitted into the pin hole 28, the tip portion 52a elastically bends toward the center to reduce the diameter.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, it is possible to obtain actions and effects equivalent to those of the first embodiment. In addition, in this embodiment, when the positioning pin 52 is press-fitted into the pin hole 28, as shown in FIG. Because of the pressure contact, the positioning pin 52 is firmly connected to the inner circumference of the pin hole 28 . Therefore, the reliability of grounding by the positioning pin 52 can be improved. In addition, the load applied when connecting the valve casing 11 and the outlet pipe 5 (mating member) with the positioning pin 52 can be reduced.

<Fourth Embodiment>
Next, a fourth embodiment will be described in detail with reference to the drawings.

FIG. 10 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connecting structure of the members 11, 5, etc. is exploded. FIG. 11 shows a cross-sectional view of the state in which the members 11, 5, etc. are connected to each other. This embodiment differs from each of the above-described embodiments mainly in terms of the configuration of the positioning pin 53 . In FIG. 10, the positioning pin 53 is formed to have the same outer diameter from the distal end portion 53a to the proximal end portion 53b. 10, the inner diameter of the pin hole 27 formed in the valve casing 11 is formed to have a size that allows the base end portion 53b of the positioning pin 53 to be press-fitted. The inner diameter of another pin hole 28 formed in the outlet pipe 5 is formed to have a size that allows the tip portion 53a of the positioning pin 53 to be incorporated therein. That is, the inner diameter of the pin hole 28 is formed to be the same as or slightly larger than the outer diameter of the tip portion 53a. A conductive spring 54 is also incorporated in the pin hole 28 . In this embodiment, as shown in FIG. 11, the tip 53a of the positioning pin 53 penetrates the Teflon coating 35 and the gasket 34 and is incorporated into the pin hole 28, and the conductive spring 54 is inserted into the pin hole 28. It is provided so as to contact the bottom of the hole and the tip of the positioning pin 53 .

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, it is possible to obtain actions and effects equivalent to those of the first embodiment. In addition, in this embodiment, since the conductive member is the positioning pin 53 between the valve casing 11 and the outlet pipe 5, there is no need to provide a conductive member exclusively for conduction. Further, as shown in FIG. 11, the positioning pin 53 is incorporated in the pin hole 28, and the conductive spring 54 contacts the hole bottom of the pin hole 28 and the tip of the positioning pin 53, thereby opening the valve casing 11 and the outlet. The connection with the pipe 5 is completed, and the positioning pin 53 and the conductive spring 54 are sandwiched between the valve casing 11 and the outlet pipe 5 . Therefore, the grounding described above can be simplified, and the positioning pin 53 and the conductive spring 54 functioning as ground wiring can be protected. In addition, the load applied when connecting the valve casing 11 and the outlet pipe 5 (mating member) with the positioning pin 53 can be reduced.

<Fifth Embodiment>
Next, a fifth embodiment will be described in detail with reference to the drawings.

FIG. 12 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connecting structure of the members 11, 5, etc. is exploded. FIG. 13 shows a cross-sectional view of the state in which the members 11, 5, etc. are connected to each other. This embodiment differs from each of the above-described embodiments mainly in terms of the configuration relating to the positioning pin 55 . In FIG. 12, the positioning pin 55 is formed to have the same outer diameter from the distal end portion 55a to the proximal end portion 55b. 10, the inner diameter of the pin hole 27 formed in the valve casing 11 is formed to have a size that allows the base end portion 55b of the positioning pin 55 to be press-fitted. The inner diameter of another pin hole 28 formed in the outlet pipe 5 is formed to have a size that allows the tip portion 55a of the positioning pin 55 to be incorporated therein. That is, the inner diameter of the pin hole 28 is formed to be the same as or slightly larger than the outer diameter of the tip portion 55a. Further, the tip of the tip portion 55a can abut on the hole bottom of the pin hole 28. As shown in FIG. Further, at the tip of the tip portion 55a, a projection 55c is formed that bites into the hole bottom of the pin hole 28 or contacts with the pin hole 28 by being deformed. In this embodiment, as shown in FIG. 13, the tip portion 55a of the positioning pin 55 passes through the Teflon coating 35 and the gasket 34 and is inserted into the pin hole 28, and the tip of the positioning pin 55 is inserted into the pin hole 28. While contacting the bottom of the hole, the protrusion 55c bites into the bottom of the hole or is deformed to make contact.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, it is possible to obtain actions and effects equivalent to those of the first embodiment. In addition, in this embodiment, since the conductive member is the positioning pin 55 between the valve casing 11 and the outlet pipe 5, there is no need to provide a conductive member exclusively for conduction. Further, as shown in FIG. 13, the positioning pin 55 is incorporated into the pin hole 28 and the tip of the positioning pin 55 abuts the hole bottom of the pin hole 28, thereby completing the conduction between the valve casing 11 and the outlet pipe 5, thereby positioning. A pin 55 is sandwiched between the valve casing 11 and the outlet pipe 5 . Therefore, the grounding described above can be simplified, and the positioning pin 55 functioning as the ground wiring can be protected.

According to the configuration of this embodiment, when the positioning pin 55 contacts the hole bottom of the pin hole 28, the protrusion 55c at the tip of the positioning pin 55 bites into the hole bottom of the pin hole 28 or deforms to contact the hole bottom. , the positioning pin 55 is firmly connected to the bottom of the hole. Therefore, the reliability of grounding by the positioning pin 55 can be improved. In addition, the load applied when connecting the valve casing 11 and the outlet pipe 5 (mating member) with the positioning pin 55 can be reduced.

<Sixth Embodiment>
Next, a sixth embodiment will be described in detail with reference to the drawings.

FIG. 14 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connecting structure of the members 11, 5, etc. is exploded. FIG. 15 shows a cross-sectional view of the state in which the members 11, 5, etc. are connected to each other. This embodiment differs from each of the above-described embodiments in terms of the configuration of the conductive member. In this embodiment, as shown in FIG. 14, a concave portion 61 is provided in the outlet-side mating surface 21 of the valve casing 11, and a sphere 62 made of a conductive material is press-fitted into the concave portion 61. As shown in FIG. In this embodiment, as shown in FIG. 15, with the valve casing 11 connected to the outlet pipe 5, part of the sphere 62 penetrates the Teflon coating 35 and the gasket 34 to 32. In this embodiment, the sphere 62 corresponds to an example of a conductive member in this disclosed technique.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, it is possible to obtain actions and effects equivalent to those of the first embodiment. In addition, in this embodiment, when connecting the valve casing 11 and the outlet pipe 5, the outlet side mating surface 21 (first mating surface) and the inlet side mating surface 32 (second mating surface) are joined together. Then, as shown in FIG. 15 , a portion of a sphere 62 as a conductive member press-fitted into the recess 61 penetrates the Teflon coating 35 and the gasket 34 and contacts the entrance side mating surface 32 . As a result, the connection between the valve casing 11 and the outlet pipe 5 is completed, and the ball 62 is sandwiched between the valve casing 11 and the outlet pipe 5 . Therefore, it is possible to simplify the implementation of the grounding described above, and to protect the sphere 62 functioning as the ground wiring. In addition, the load applied when connecting the valve casing 11 and the outlet pipe 5 (mating member) with the ball 62 can be reduced.

<Seventh Embodiment>
Next, a seventh embodiment will be described in detail with reference to the drawings.

FIG. 16 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connecting structure of the members 11, 5, etc. is exploded. FIG. 17 shows the spring member 64 in a perspective view. FIG. 18 shows a cross-sectional view of the state in which the members 11, 5, etc. are connected to each other. This embodiment differs from the sixth embodiment in the configuration of the conductive member. In this embodiment, as shown in FIG. 16, a concave portion 63 is provided in the outlet side mating surface 21 of the valve casing 11, and a spring member 64 made of a conductive material is incorporated in the concave portion 63. As shown in FIG. In this embodiment, the recess 63 is formed narrower than the back by an overhang 63a. As shown in FIGS. 16 and 17, the spring member 64 is formed in a split tube shape having a C-shaped cross section. When the spring member 64 is incorporated in the recess 63, the spring member 64 is prevented from falling out of the recess 63 by the projection 63a of the entrance. In this embodiment, as shown in FIG. 18, with the valve casing 11 connected to the outlet pipe 5, a part of the spring member 64 penetrates the Teflon coating 35 and the gasket 34 to match the inlet side of the outlet pipe 5. It is adapted to resiliently contact surface 32 . In this embodiment, the spring member 64 corresponds to an example of a conductive member in this disclosed technique.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, the same actions and effects as those of the first embodiment can be obtained. In addition, in this embodiment, when the valve casing 11 and the outlet pipe 5 are connected, the outlet-side mating surface 21 and the inlet-side mating surface 32 are joined together, so that the spring as a conductive member incorporated in the recess 63 is formed. A portion of member 64 penetrates Teflon coating 35 and gasket 34 and elastically contacts inlet mating surface 32 . This completes electrical connection between the valve casing 11 and the outlet pipe 5 , and the spring member 64 is sandwiched between the valve casing 11 and the outlet pipe 5 . Therefore, it is possible to simplify the grounding described above and protect the spring member 64 functioning as the ground wiring. Moreover, the load applied when the valve casing 11 and the outlet pipe 5 (mating member) are electrically connected by the spring member 64 can be reduced.

<Eighth embodiment>
Next, an eighth embodiment will be described in detail with reference to the drawings.

FIG. 19 shows a cross-sectional view corresponding to FIG. 3, in which a part of the connecting structure of the members 3, 11, 5, etc. is exploded. This embodiment differs from the seventh embodiment in the configuration of the conductive member. In this embodiment, as shown in FIG. 19, a concave portion 65 is provided in the inlet side mating surface 22 of the valve casing 11, and a spring member 66 made of a conductive material is incorporated in the concave portion 65. As shown in FIG. In this embodiment, the spring member 66 is coiled. In this embodiment, when the cooler casing 3 and the outlet pipe 5 are connected to the valve casing 11, the base end (lower part) of the spring member 66 elastically contacts the bottom wall of the recess 65, and the spring member 66 pierces the Teflon coating 35 and the gasket 34 and elastically contacts the outlet-side mating surface 31 of the cooler casing 3 . In this embodiment, the spring member 64 corresponds to an example of a conductive member in this disclosed technique.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, the same actions and effects as those of the first embodiment can be obtained. In addition, in this embodiment, when the valve casing 11 and the cooler casing 3 are connected, the inlet-side mating surface 22 and the outlet-side mating surface 31 are joined together, so that the spring as a conductive member incorporated in the recess 65 is formed. A portion of member 66 penetrates Teflon coating 35 and gasket 34 and resiliently contacts outlet mating surface 31 . This completes electrical connection between the valve casing 11 and the cooler casing 3 , and the spring member 66 is sandwiched between the valve casing 11 and the cooler casing 3 . Therefore, it is possible to simplify the grounding described above and protect the spring member 66 functioning as the ground wiring. Moreover, the load applied when the valve casing 11 and the cooler casing 3 (mating member) are electrically connected by the spring member 66 can be reduced.

<Ninth Embodiment>
Next, a ninth embodiment will be described in detail with reference to the drawings.

FIG. 20 shows a cross-sectional view corresponding to FIG. 4, in which a part of the connection structure of the members 11, 5, etc. is exploded. This embodiment differs from the sixth to eighth embodiments in the configuration of the conductive member. In this embodiment, as shown in FIG. 20, a recess 67 is provided in the outlet side mating surface 21 of the valve casing 11, and a compression pin 68 made of a conductive material is incorporated in the recess 67. As shown in FIG. In this embodiment, the inner wall of the recess 67 is in contact with the outer wall of the compression pin 68 . FIG. 21 shows the compression pin 68 in cross-section. As shown in FIG. 21, the compression pin 68 is configured to be compressible by a built-in spring member 68c. That is, the compression pin 68 includes a cylinder member 68a made of a conductive material, a piston member 68b made of a conductive material and reciprocally movable inside the cylinder member 68a, and a cylinder member 68a and a piston. and a coiled spring member 68c formed of a conductive material provided between the member 68b. A tip portion 68ba of the piston member 68b protrudes outward from the cylinder member 68a. The distal end portion 68ba can contract with respect to the cylinder member 68a as the spring member 68c contracts. In this embodiment, when the valve casing 11 and the outlet pipe 5 are connected, the tip 68ba of the compression pin 68 penetrates the Teflon coating 35 and the gasket 34 and elastically contacts the inlet side mating surface 32 of the outlet pipe 5. is designed to come into contact with In this embodiment, the compression pin 68 corresponds to an example of a conductive member in this disclosed technique.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, the same actions and effects as those of the first embodiment can be obtained. In addition, in this embodiment, when the valve casing 11 and the outlet pipe 5 are connected, the outlet-side mating surface 21 and the inlet-side mating surface 32 are joined to each other, so that a compression valve as a conductive member incorporated in the recess 67 is formed. The tip of the pin 68 penetrates the Teflon coating 35 and the gasket 34 and elastically contacts the inlet side mating surface 32 . As a result, the connection between the valve casing 11 and the outlet pipe 5 is completed, and the compression pin 68 is sandwiched between the valve casing 11 and the outlet pipe 5 . Therefore, it is possible to simplify the implementation of the grounding described above and protect the compression pin 68 functioning as the ground wiring. In addition, the load applied when connecting the valve casing 11 and the outlet pipe 5 (mating member) with the compression pin 68 can be reduced.

<Tenth Embodiment>
Next, a tenth embodiment will be described in detail with reference to the drawings.

FIG. 22 shows a cross-sectional view corresponding to FIG. 3, in which a part of the connection structure of the members 11, 5, etc. is exploded. This embodiment differs from each of the above-described embodiments in terms of the configuration of the conductive member. In this embodiment, as shown in FIG. 22, the inlet-side mating surface 32 of the outlet pipe 5 has an exposed surface 32a (indicated by an arrow) protruding from the joining range with the outlet-side mating surface 21 of the valve casing 11 . )including. This exposed surface 32a is not covered with the Teflon coating 35 and the gasket 34. As shown in FIG. The valve casing 11 also includes a contactor 71 that protrudes outward in an arm shape from the outlet-side mating surface 21 and is provided to come into contact with the exposed surface 32a. A contact portion 71a is formed on the lower surface of the tip portion of the contactor 71 so as to protrude slightly toward the exposed surface 32a. In this embodiment, when the valve casing 11 and the outlet pipe 5 are connected, the lower surface of the contact portion 71a of the contactor 71 avoids the Teflon coating 35 and the gasket 34 and is elastically attached to the exposed surface 32a of the outlet pipe 5. is designed to come into contact with In this embodiment, the contactor 71 corresponds to an example of a conductive member in this disclosed technique.

[Action and effect of electric valve device]
According to the configuration of the electric valve device of this embodiment described above, the same actions and effects as those of the first embodiment can be obtained. In addition, in this embodiment, when the valve casing 11 and the outlet pipe 5 are connected, the outlet-side mating surface 21 and the inlet-side mating surface 32 are joined together, so that a conductive material protruding outward from the outlet-side mating surface 21 is formed. A contactor 71 as a member contacts the exposed surface 32 a of the entrance-side mating surface 32 . This completes electrical connection between the valve casing 11 and the outlet pipe 5 . Therefore, it is possible to simplify the grounding described above. In addition, the load applied when connecting the valve casing 11 and the outlet pipe 5 (mating member) with the contactor 71 can be reduced.

It should be noted that the disclosed technology is not limited to the above-described embodiments, and part of the configuration can be changed as appropriate without departing from the scope of the disclosed technology.

(1) In the first to fifth embodiments, the positioning pins 29, 51 to 53, 55 are provided separately from the valve casing 11. However, as shown in FIG. It can also be provided integrally. FIG. 23 shows a cross-sectional view corresponding to FIG. 4 in which a part of the connection structure of the members 11, 5 and the like is exploded.

(2) In the second embodiment, the inner diameter of the pin hole 27 of the valve casing 11 is formed to a size that allows the base end portion 51b of the positioning pin 51 to be press-fitted, and the inner diameter of the pin hole 28 of the outlet pipe 5 is set to , the outer diameter of the tip portion 51a of the positioning pin 51 is approximately the same size, and four protrusions 51c are formed on the outer periphery thereof so as to bite into the inner periphery of the pin hole 28 or contact the pin hole 28 by being deformed. In contrast, the inner diameter of the pin hole of the valve casing is formed to a size that allows the base end of the positioning pin to be press-fitted, and the inner diameter of the pin hole of the outlet pipe is set to a size that allows the tip of the positioning pin to be press-fitted. , and the four protrusions formed on the outer circumference can be omitted. In other words, both the proximal end and the distal end of the positioning pin can be configured to be press-fitted into the corresponding pin holes.

(3) In the first to fifth embodiments, the positioning pins 29, 51 to 53, 55 are provided on the valve casing 11 side, not on the outlet pipe 5 side. It can also be provided on the side of the outlet pipe or on the side of the cooler casing instead.

(4) In the sixth embodiment, the sphere 62 is provided on the valve casing 11 side instead of the outlet pipe 5 side, but the sphere may be provided on the outlet pipe side or the cooler casing side instead of the valve casing side. can also

(5) In the seventh embodiment, the spring member 64 is provided not on the outlet pipe 5 side but on the valve casing 11 side. can also be provided.

(6) In the eighth embodiment, the spring member 66 is provided not on the cooler casing 3 side but on the valve casing 11 side. can also be provided.

(7) In the ninth embodiment, the compression pin 68 is provided not on the outlet pipe 5 side but on the valve casing 11 side. can also be provided.

(8) In the tenth embodiment, the contactor 71 is provided on the valve casing 11 side instead of the outlet pipe 5 side. can also be provided.

(9) In each of the above-described embodiments, the electric valve device is embodied as an EGR cooler bypass valve provided in the EGR cooler unit of the EGR device, but is not limited to this, and is embodied as an EGR valve or as an EGR valve. Other than the device, it can be embodied in a throttle valve device or other valve device.

[Regarding additional claims]
Here, the details of the disclosed technology included in each of the above embodiments will be described as appended claims below.
(Appendix claim 1)
In the electric valve device according to claim 2,
The positioning pin is formed of a member separate from the valve casing and the mating member, and one end of the positioning pin is inserted into a first pin hole provided in the first mating surface or the second mating surface. The positioning pin is press-fitted into a provided second pin hole, and the other end of the positioning pin penetrates the insulating member and is press-fitted into the second pin hole or the first pin hole. Electric valve device.

According to the configuration of claim 1 described above, it is possible to obtain actions and effects equivalent to those of the configuration of claim 2 .

(Appendix claim 2)
In the electric valve device according to claim 5,
The positioning pin is formed of a member separate from the valve casing and the mating member, and one end of the positioning pin is inserted into a first pin hole provided in the first mating surface or the second mating surface. The positioning pin is press-fitted into a provided second pin hole, the other end of the positioning pin penetrates the insulating member, and is incorporated into the second pin hole or the first pin hole,
An electric valve device, wherein a conductive spring member is provided in the second pin hole or the first pin hole so as to contact the bottom of the hole and the other end of the positioning pin.

According to the configuration of claim 2 described above, it is possible to obtain actions and effects equivalent to those of the configuration of claim 5 .

(Appendix claim 3)
In the electric valve device according to claim 6,
The positioning pin is formed of a member separate from the valve casing and the mating member, and one end of the positioning pin is inserted into a first pin hole provided in the first mating surface or the second mating surface. The other end of the positioning pin penetrates the insulating member and is inserted into the second pin hole or the first pin hole, and the tip of the positioning pin is inserted into the pin hole. An electric valve device, characterized in that it abuts on the hole bottom of a hole.

According to the configuration of claim 3 described above, it is possible to obtain actions and effects equivalent to those of the configuration of claim 6.

(Appendix claim 4)
In the electric valve device according to claim 1,
The first mating surface includes an exposed surface protruding from the joining range with the second mating surface,
The electrically-operated valve device, wherein the conductive member is a contact that protrudes outward from the second mating surface and is provided on the mating member so as to come into contact with the exposed surface.

According to the configuration of claim 3 described above, it is possible to obtain actions and effects equivalent to those of the configuration of claim 11 .

This disclosed technique can be used for various devices provided in conjunction with an engine of a vehicle or the like.

1 bypass valve 3 cooler casing (mating member)
5 Exit pipe (mating member)
11 valve casing 21 outlet side mating surface (first mating surface)
22 inlet side mating surface (first mating surface)
24 bolt hole (connection holding means)
25 bolts (connection retaining means)
28 another pin hole 29 positioning pin (conductive member)
31 outlet side mating surface (second mating surface)
32 inlet side mating surface (second mating surface)
32a exposed surface 35 Teflon coating (insulating member)
37 bolt hole (connection holding means)
38 bolt hole (connection holding means)
51 positioning pin (conductive member)
51c projection 52 positioning pin (conductive member)
53 positioning pin (conductive member)
54 conductive spring 55 positioning pin (conductive member)
55c projection 59 positioning pin 61 recess 62 sphere (conductive member)
63 recess 64 spring member (conductive member)
65 recess 66 spring member (conductive member)
68 compression pin (conductive member)
68c spring member 71 contactor (conductive member)

Claims (11)

an electrically conductive valve casing;
a conductive mating member connected to the valve casing;
an insulating member provided between the valve casing and the mating member;
the valve casing including a first mating surface;
the mating member includes a second mating surface to be joined to the first mating surface of the valve casing via the insulating member;
The first mating surface of the valve casing and the second mating surface of the mating member are joined together via the insulating member, thereby maintaining the state in which the valve casing and the mating member are connected. In a motorized valve device comprising a connection holding means for
Between the valve casing and the mating member, the valve casing avoids the insulating member when the first mating surface is joined to the second mating surface via the insulating member. and the mating member are provided with a conductive member. In the electric valve device according to claim 1,
the conductive member is a positioning pin for positioning the connected valve casing and the mating member;
At least one of the first mating surface and the second mating surface is provided with the positioning pin, and the other is provided with a pin hole, and the positioning pin penetrates the insulating member and is press-fitted into the pin hole. An electric valve device characterized by: In the electric valve device according to claim 2,
An electric valve device, wherein a projection is formed on an outer circumference of the positioning pin press-fitted into the pin hole. In the electric valve device according to claim 2,
The locating pin is formed such that the outer diameter of the portion press-fitted into the pin hole is larger than the inner diameter of the pin hole, and the press-fit portion is elastically formed so that the diameter can be reduced. valve device. In the electric valve device according to claim 1,
the conductive member includes a positioning pin for positioning the connected valve casing and the mating member with each other;
At least one of the first mating surface and the second mating surface is provided with the positioning pin, and the other is provided with a pin hole, and the positioning pin penetrates the insulating member and is incorporated into the pin hole. and a conductive spring is provided in the pin hole so as to contact the hole bottom and the tip of the positioning pin. In the electric valve device according to claim 1,
the conductive member is a positioning pin for positioning the connected valve casing and the mating member;
At least one of the first mating surface and the second mating surface is provided with the positioning pin, and the other is provided with a pin hole, and the positioning pin penetrates the insulating member and is incorporated into the pin hole. and a tip end of which abuts on the hole bottom of the pin hole. In the electric valve device according to claim 6,
An electric valve device, wherein a protrusion is formed at the tip of the positioning pin. In the electric valve device according to claim 1,
The conductive member is a sphere,
A concave portion is provided in the first mating surface or the second mating surface, and the spherical body is press-fitted into the concave portion and a part of the spherical body penetrates the insulating member to form the second mating surface or the second mating surface. An electrically operated valve device that contacts the first mating surface. In the electric valve device according to claim 1,
The conductive member is a spring member,
A recess is provided in the first mating surface or the second mating surface, and the spring member is incorporated in the recess and a part of the spring member penetrates the insulating member to form the second mating surface. Alternatively, the electric valve device is in contact with the first mating surface. In the electric valve device according to claim 1,
The conductive member is a compression pin configured to be compressible by a built-in spring member,
A recess is provided in the first mating surface or the second mating surface, and the compression pin is incorporated in the recess and a tip portion of the compression pin penetrates the insulating member to form the second mating surface. Alternatively, the electric valve device is in contact with the first mating surface. In the electric valve device according to claim 1,
The second mating surface includes an exposed surface protruding from the joining range with the first mating surface,
The electrically-operated valve device, wherein the conductive member is a contact provided on the valve casing so as to protrude outward from the first mating surface and come into contact with the exposed surface.

Images