Drain valve drive device

Abstract

A drain valve driving device can easily avoid the connection part of a terminal and a wire from being broken due to the wire being pulled by external force. The drain valve driving device for driving the valve core of a drain valve comprises a housing, a driving source arranged in the housing, a terminal electrically connected with the driving source, and a wire connected with the terminal. The housing has an abutting part and a limiting part. The wire extends through the limiting part from the terminal via the abutting part. The part of the wire from the terminal to the limiting part abuts against the abutting part and forms a U-shaped section.

Description

TECHNICAL FIELD

[0001] The present application relates to a drain valve driving device for driving a poppet action of a drain valve. BACKGROUND

[0002] In the past, there has been a drain valve driving device for driving a poppet action of a drain valve, which includes a housing 110X, a driving source 120X and a terminal 130X electrically connected to the driving source 120X, which are provided in the housing 110X, and a lead wire 140X connected to the terminal 130X, as shown in Figure 7 and Figure 8 Specifically, as shown in Figure 7 and Figure 8 , the terminal 130X protrudes from the driving source 120X toward a side direction perpendicular to a paper surface in an up-and-down direction Figure 8 , the housing 110X has a first housing 111X including a first housing main body 1111X and a terminal seat 1112X formed integrally, and a second housing 112X including a second housing main body 1121X and a terminal cover 1122X formed separately, the first housing main body 1111X and the second housing main body 1121X enclose a space for accommodating the driving source 120X, the terminal seat 1112X and the terminal cover 1122X are fixed together by a screw 180X and enclose a space for accommodating the terminal 130X, one end of the lead wire 140X is connected to the terminal 130X by soldering, and the other end of the lead wire 140X is drawn out to the outside of the housing 110X through a through-hole in a bottom wall of the terminal cover 1122X.

[0003] However, in the above-described drain valve driving device, as shown in Figure 7 and Figure 8 , the lead wire 140X extends in a substantially straight line from the terminal 130X to the through-hole in the bottom wall of the terminal cover 1122X and is drawn out to the outside of the housing 110X through the through-hole, and therefore, if the connection strength of the lead wire 140X and the terminal 130X is weak, the connection portion of the lead wire 140X and the terminal 130X is easily broken when the lead wire 140X is pulled by an external force. SUMMARY

[0004] The present application has been achieved in order to solve the above-described problem, and aims to provide a drain valve driving device in which the connection portion of a terminal and a lead wire is easily prevented from being broken by an external force applied to the lead wire.

[0005] In order to achieve the above object, the present application provides a drain valve driving device for driving a valve core of a drain valve, comprising: a housing; a driving source and a terminal electrically connected to the driving source, which are arranged in the housing; and a wire connected to the terminal, wherein the housing has an abutting portion and a limiting portion, the wire extends through the limiting portion from the terminal via the abutting portion, and a portion of the wire from the terminal to the limiting portion abuts against the abutting portion and forms a U-shaped section.

[0006] Here, the "U-shaped section" is not limited to a strict U shape in which two straight line sections are connected via an arc section, but can be a general U shape.

[0007] According to the drain valve driving device of the present application, the housing has the abutting portion and the limiting portion, the wire extends through the limiting portion from the terminal via the abutting portion, and the portion of the wire from the terminal to the limiting portion abuts against the abutting portion and forms the U-shaped section. Therefore, even if the connection strength between the terminal and the wire is weak, when an external force is applied to the portion of the wire away from the terminal, the shape of the U-shaped section is easily maintained by the limiting portion and the abutting portion, and the friction between the abutting portion and the wire is used to reduce or eliminate the force transmitted to the connection portion of the wire and the terminal, thereby avoiding the breakage of the connection portion of the terminal and the wire.

[0008] In addition, in the drain valve driving device of the present application, preferably, the terminal includes a first terminal and a second terminal, the wire includes a first wire and a second wire, the limiting portion includes a first limiting portion and a second limiting portion, the first wire extends through the first limiting portion from the first terminal via the abutting portion, the portion of the first wire from the first terminal to the first limiting portion forms a first U-shaped section, the abutting portion abuts against the first U-shaped section, the first limiting portion clamps the first wire, the second wire extends through the second limiting portion from the second terminal via the abutting portion, the portion of the second wire from the second terminal to the second limiting portion forms a second U-shaped section, the abutting portion abuts against the second U-shaped section, and the second limiting portion clamps the second wire.

[0009] According to the drain valve driving device of the present application, the first lead wire extends from the first terminal through the first limiting portion via the abutting portion, the portion of the first lead wire from the first terminal to the first limiting portion forms the first U-shaped section, the abutting portion abuts against the first U-shaped section, the first limiting portion clamps the first lead wire, the second lead wire extends from the second terminal through the second limiting portion via the abutting portion, the portion of the second lead wire from the second terminal to the second limiting portion forms the second U-shaped section, the abutting portion abuts against the second U-shaped section, the second limiting portion clamps the second lead wire, therefore, even if the connection strength of the first terminal and the first lead wire, the connection strength of the second terminal and the second lead wire are weak, when an external force is applied to the portions of the first lead wire and the second lead wire away from the first terminal and the second terminal, the shape of the first U-shaped section and the second U-shaped section can be reliably maintained by the limiting portions and the abutting portion, the force transmitted to the connection portions of the first lead wire and the first terminal, the connection portions of the second lead wire and the second terminal is reduced or eliminated by the friction between the abutting portion and the lead wires, the friction between the limiting portions and the lead wires, thereby avoiding the connection portions of the first terminal and the first lead wire, the second terminal and the second lead wire from being broken.

[0010] In addition, in the drain valve driving device of the present application, preferably, the first terminal and the second limiting portion are located on one side of the abutting portion, and the second terminal and the first limiting portion are located on the other side of the abutting portion.

[0011] According to the drain valve driving device of the present application, the first terminal and the second limiting portion are located on one side of the abutting portion, and the second terminal and the first limiting portion are located on the other side of the abutting portion, therefore, the space on both sides of the abutting portion can be shared to cross-configure the first lead wire and the second lead wire, while achieving miniaturization, it is easy to ensure that the first U-shaped section and the second U-shaped section have a larger length, thereby avoiding the first U-shaped section and the second U-shaped section from being prematurely broken due to sharp bending.

[0012] In addition, in the drain valve driving device of the present application, preferably, the housing has a partition plate, the first terminal and the second limiting portion are located on one side of the thickness direction of the partition plate, the second terminal and the first limiting portion are located on the other side of the thickness direction of the partition plate, and the abutting portion is formed by the edge of the through hole provided on the partition plate.

[0013] According to the drain valve driving device of the present application, the housing has a partition plate, the first terminal and the second limiting portion are located on one side of the thickness direction of the partition plate, the second terminal and the first limiting portion are located on the other side of the thickness direction of the partition plate, and the abutting portion is formed by the edge of the through hole provided on the partition plate, therefore, it is easy to reliably separate the first terminal and the second terminal by the partition plate, and to avoid short circuit between them.

[0014] Further, in the drain valve driving device of the present application, preferably, the housing has a top plate and a partition plate, the partition plate is arranged in the housing, and is opposite to the top plate perpendicularly and with a spacing, the first terminal and the second limiting part are located on one side in the thickness direction of the partition plate, the second terminal and the first limiting part are located on the other side in the thickness direction of the partition plate, and the abutting part is formed by the edge of the partition plate facing the top plate.

[0015] According to the drain valve driving device of the present application, the housing has a top plate and a partition plate, the partition plate is arranged in the housing, and is opposite to the top plate perpendicularly and with a spacing, the first terminal and the second limiting part are located on one side in the thickness direction of the partition plate, the second terminal and the first limiting part are located on the other side in the thickness direction of the partition plate, and the abutting part is formed by the edge of the partition plate facing the top plate, thus, the first terminal and the second terminal can be reliably separated by the partition plate, and short circuit between the two can be avoided; and, different from the case where the abutting part is formed by the edge of the through hole arranged in the partition plate, when the drain valve driving device is assembled, the first lead wire and the second lead wire do not need to pass through the through hole of the partition plate, which helps to improve the assembly efficiency.

[0016] Further, in the drain valve driving device of the present application, preferably, the first limiting part is a groove or a hole extending parallel to the partition plate, and / or the second limiting part is a groove or a hole extending parallel to the partition plate.

[0017] According to the drain valve driving device of the present application, the first limiting part is a groove or a hole extending parallel to the partition plate, and / or the second limiting part is a groove or a hole extending parallel to the partition plate, thus, the shapes of the first limiting part and the second limiting part are simple and easy to form, which helps to reduce the manufacturing cost; and, when an external force is applied to the part of the lead wire away from the terminal, the shape of the U-shaped section can be maintained by the limiting part, so that the external force is offset by the abutting part, and the external force is prevented from being transmitted to the connecting part of the lead wire and the terminal to cause the connecting part of the terminal and the lead wire to break; in particular, when the first limiting part and the second limiting part are grooves opened in the radial direction of the first lead wire and the second lead wire in the entire range in the extension direction of the first lead wire and the second lead wire, when the drain valve driving device is assembled, the first lead wire and the second lead wire can be conveniently clamped into the first limiting part and the second limiting part in the radial direction of the first lead wire and the second lead wire, which helps to improve the assembly efficiency.

[0018] Further, in the drain valve driving device of the present application, preferably, the housing comprises a first housing and a second housing which are detachable along a first direction, the first housing has the top plate with the thickness direction consistent with the first direction, and the second housing has the first limiting part, the second limiting part and the partition plate.

[0019] According to the drain valve driving device of the present application, the housing comprises a first shell and a second shell which are assembled along a first direction, the first shell has a top plate with a thickness direction consistent with the first direction, and is provided with a first terminal and a second terminal, the second shell has a first limiting portion, a second limiting portion and a partition plate, thus, after the first wire and the second wire are connected with the first terminal and the second terminal respectively, the second shell is only needed to be assembled to the first shell along the first direction, so that the partition plate can be conveniently abutted with the middle portions of the first U-shaped section and the second U-shaped section of the first wire and the second wire, and the assembly is easy.

[0020] In addition, in the drain valve driving device of the present application, preferably, the first shell comprises a first shell body and a terminal seat which are formed integrally, the second shell comprises a second shell body and a terminal cover which are formed separately, the first shell body and the second shell body enclose a space for accommodating the driving source, the terminal seat and the terminal cover enclose a space for accommodating the first terminal and the second terminal, the terminal seat has the top plate, the terminal cover has the first limiting portion, the second limiting portion and the partition plate, and the terminal cover is engaged with the second shell body and the terminal seat respectively.

[0021] According to the drain valve driving device of the present application, the terminal cover is engaged with the second shell body and the terminal seat respectively, thus, compared with the case that the terminal cover and the second shell body and the terminal seat are fixed to each other by screwing structure or the like, the number of components can be reduced, the assembly efficiency can be improved, and the manufacturing cost can be reduced.

[0022] In addition, in the drain valve driving device of the present application, preferably, the driving source is a motor comprising a stator and a rotor, the stator has a stator core and a coil wound on the stator core, the rotor rotates relative to the stator, and the coil wire constituting the coil is connected with the first terminal and the second terminal respectively.

[0023] In addition, in the drain valve driving device of the present application, preferably, the wire is connected with the terminal by fusion welding.

[0024] According to the drain valve driving device of the present application, the wire is connected with the terminal by fusion welding, thus, compared with the case that the wire is connected with the terminal by soldering, the connection strength between the terminal and the wire can be enhanced, so that the connection part between the terminal and the wire can be more easily avoided from being broken due to the wire being pulled by external force.

[0025] (EFFECTS OF THE INVENTION)

[0026] According to the present application, the housing has an abutting portion and a limiting portion, the lead wire extends from the terminal through the limiting portion via the abutting portion, the portion of the lead wire from the terminal to the through the limiting portion abuts against the abutting portion and forms a U-shaped section, thus, even if the connection strength of the terminal and the lead wire is weak, when an external force of pulling is applied to the portion of the lead wire away from the terminal, the limiting portion and the limiting portion maintain the shape of the U-shaped section, the friction between the abutting portion and the lead wire and the friction between the limiting portion and the lead wire are used to reduce or eliminate the force transmitted to the connecting portion of the terminal and the lead wire, so as to avoid the breakage of the connecting portion of the terminal and the lead wire. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view schematically showing an appearance of a drain valve driving device according to an embodiment of the present application, and shows a state viewed from a bottom side.

[0028] Figure 2 is a partial cross-sectional view schematically showing a structure around a motor main body of a drain valve driving device according to an embodiment of the present application.

[0029] Figure 3 is a partial cross-sectional view schematically showing a structure around a terminal of a drain valve driving device according to an embodiment of the present application.

[0030] Figure 4 is a partial cross-sectional view schematically showing a drain valve driving device according to an embodiment of the present application.

[0031] Figure 5 is a partial bottom view schematically showing a part of a first housing side of a drain valve driving device according to an embodiment of the present application.

[0032] Figure 6 is a perspective view schematically showing a terminal cover included in a second housing of a drain valve driving device according to an embodiment of the present application.

[0033] Figure 7 is a partial perspective view schematically showing a drain valve driving device according to a related art, and shows a state viewed from a bottom side.

[0034] Figure 8 is a partial perspective view schematically showing Figure 7 a drain valve driving device according to the related art, in a state where the second housing is removed.

[0035] (SYMBOL EXPLANATION)

[0036] 100 drain valve driving device

[0037] 110 housing

[0038] 111 first housing

[0039] 1111 first housing main body

[0040] 1112 terminal seat

[0041] 11121 top plate

[0042] 11129 protrusion

[0043] 11122 side plate

[0044] 112 second housing

[0045] 1121 second housing main body

[0046] 11218 locking groove

[0047] 1122 terminal cover

[0048] 11221 bottom plate

[0049] 11222 side plate

[0050] 11223 partition plate

[0051] 11225 first limiting portion

[0052] 11226 second limiting portion

[0053] 11228 locking piece

[0054] 11229 opening portion

[0055] 120 drive source

[0056] 121 stator

[0057] 1211 stator core

[0058] 1212 coil

[0059] 122 rotor

[0060] 130 terminal

[0061] 131 first terminal

[0062] 132 second terminal

[0063] 140 wire

[0064] 141 first wire

[0065] 142 second wire

[0066] 150 gear mechanism

[0067] 160 belt wheel

[0068] 170 wire material

[0069] 200 valve core DETAILED DESCRIPTION

[0070] Hereinafter, the drain valve driving device according to an embodiment of the present application will be described with reference to Figures 1 to 6 to the accompanying drawings. Figure 1 is a perspective view schematically showing the appearance of the drain valve driving device according to the embodiment of the present application, and shows a state viewed from the bottom side, Figure 2 is a partial cross-sectional view schematically showing the structure of the vicinity of the motor main body of the drain valve driving device according to the embodiment of the present application, Figure 3 is a partial cross-sectional view schematically showing the structure of the vicinity of the terminal of the drain valve driving device according to the embodiment of the present application, Figure 4 is a partial cross-sectional view schematically showing the drain valve driving device according to the embodiment of the present application, Figure 5 is a partial bottom view schematically showing a portion of the first case side of the drain valve driving device according to the embodiment of the present application, Figure 6 is a perspective view schematically showing a terminal cover included in the second case of the drain valve driving device according to the embodiment of the present application.

[0071] Here, for convenience of explanation, three directions orthogonal to each other are set as an X direction, a Y direction, and a Z direction, and one side in the X direction is set as XI, the other side in the X direction is set as X2, one side in the Y direction is set as Yl, the other side in the Y direction is set as Y2, one side in the Z direction is set as Zl, and the other side in the Z direction is set as Z2, in which the Zl direction corresponds to the upper side in actual use, and the Z2 direction corresponds to the lower side in actual use.

[0072] (Overall structure of the drain valve driving device)

[0073] As shown in Figures 1 to 3 , the drain valve driving device 100 for driving the spool 200 of a drain valve includes a housing 110, a drive source 120 and a terminal 130 electrically connected to the drive source 120 provided in the housing 110, and a lead wire 140 connected to the terminal 130.

[0074] Here, as shown in Figure 4 and Figure 5 , the terminal 130 includes a first terminal 131 and a second terminal 132, and the lead wire 140 includes a first lead wire 141 and a second lead wire 142, the first lead wire 141 is connected to the first terminal 131, for example, by soldering or fusion welding, and the second lead wire 142 is connected to the second terminal 132, for example, by soldering or fusion welding.

[0075] Further, as shown in Figure 1 and Figure 2 , a gear mechanism 150 is provided in the housing 110, a belt wheel 160 is provided outside the housing 110, and the spool 200 is connected to the belt wheel 160 via a wire 170, the spool 200 is subjected to the force of an unillustrated biasing member (toward theFigure 1 (Lower left) and wants to move towards the closed position. When the drive source 120 is working, the power of the drive source 120 can be transmitted to the pulley 160 through the gear mechanism 150 to make the pulley 160 rotate, so that the wire 170 is wound around the outer circumference of the pulley 160, thereby overcoming the force of the above-mentioned force-applying component and switching the valve core 200 to the open position.

[0076] In addition, such as Figure 2 As shown, the drive source 120 is a motor including a stator 121 and a rotor 122. The stator 121 has a stator core 1211 and a coil 1212 wound around the stator core 1211. The rotor 122 rotates relative to the stator 121. The coil wires constituting the coil 1212 are connected to the first terminal 131 and the second terminal 132 respectively.

[0077] (Structure of the shell)

[0078] like Figure 1 As shown, the housing 110 includes a first housing 111 and a second housing 112 that can be installed and removed along the Z direction (corresponding to the first direction in this application).

[0079] Here, as Figures 1 to 3 As shown, the first shell 111 covers the second shell 112 from the Z1 direction (i.e., the first shell 111 is above the second shell 112), thereby forming a space for housing the drive source 120 and a space for housing the terminal 130.

[0080] In addition, such as Figure 1 , Figure 3 and Figure 6 As shown, the first shell 111 includes an integrally formed first shell body 1111 and a terminal base 1112, and the second shell 112 includes a separately formed second shell body 1121 and a terminal cover 1122. The first shell body 1111 and the second shell body 1121 form a space for housing the drive source 120, and the terminal base 1112 and the terminal cover 1122 form a space for housing the first terminal 131 and the second terminal 132. The terminal cover 1122 engages with the second shell body 1121 and the terminal base 1112 respectively (in the illustrated example, the second shell body 1121 has a locking groove 11218). The terminal cover 1122 has a locking tab 11228, and a locking groove 11218 for the locking tab 11228 to be inserted in the Z direction to position the second housing body 1121 and the terminal cover 1122 in the X direction; and the terminal seat 1112 has a protrusion 11129, and the terminal cover 1122 has an opening 11229 for the protrusion 11129 to be inserted in the Y direction so that the terminal cover 1122 and the terminal seat 1112 cannot be separated in the Z direction; and the first housing body 1111 and the second housing body 1121 are connected to each other by screws.

[0081] Further, as shown in Figure 1 , Figure 3 and Figure 5 , the terminal seat 1112 has a top plate 11121 whose thickness direction coincides with the Z direction and a side plate 11122 that extends from the periphery of the top plate 11121 on three sides other than the side close to the first case main body 1111 (the X1 direction side in the illustrated example) toward the Z2 direction. As shown in Figure 1 , Figure 3 and Figure 6 , the terminal cover 1122 has a bottom plate 11221 whose thickness direction coincides with the Z direction and a side plate 11222 that extends from the periphery of the bottom plate 11221 toward the Z1 direction; and as shown in Figure 4 and Figure 6 , the terminal cover 1122 has a partition plate 11223 that extends from the Y direction central portion of the bottom plate 11221 toward the Z1 direction to the vicinity of the top plate 11121 of the terminal seat 1112 in such a manner that the thickness direction coincides with the Y direction (in the illustrated example, the partition plate 11223 is hollow, is separated by a gap in the Y direction from the first terminal 131 and the second terminal 132, and extends from the Y direction central portion of the bottom plate 11221 to a position that is on the Z1 direction side from the connection portions of the first terminal 131 and the first lead wire 141, the connection portions of the second terminal 132 and the second lead wire 142, and that is on the Z1 direction side from the portions of the first lead wire 131 that pass through the first limiting portion 11225 described below and the portions of the second lead wire 132 that pass through the second limiting portion 11226 described below), the partition plate 11223 is separated by a gap in the Z direction from the top plate 11121; and as shown in Figure 1 and Figure 6 , the side plate 11222 (in the illustrated example, the outer surface of the side plate 11222 that is farther from the second case main body 1121) has a first limiting portion 11225 and a second limiting portion 11226 that are located on both sides of the partition plate 11223 in the Y direction, the first limiting portion 11225 limits movement of the first lead wire 141 in the radial direction of the first lead wire 141, and the second limiting portion 11226 limits movement of the second lead wire 142 in the radial direction of the second lead wire 142 (in the illustrated example, the first limiting portion 11225 and the second limiting portion 11226 are grooves that extend from the end portion of the side plate 11222 on the Z1 direction side in parallel with the partition plate 11223, that is, in the Z direction, to the bottom plate 11221, and that pass through the bottom plate 11221, the grooves being open toward the X2 direction side).

[0082] (Dispositions of lead wires on case)

[0083] As shown in Figure 1 ,Figure 4 and Figure 5 As shown, the first terminal 131 and the second limiting part 11226 are located on one side (Y1 direction side) of the thickness direction of the partition 11223, and the second terminal 132 and the first limiting part 11225 are located on the other side of the thickness direction of the partition 11223.

[0084] In addition, such as Figure 4 As shown, the first wire 141 extends from the first terminal 131 through the edge of the partition 11223 in the Z1 direction (corresponding to the abutment portion in this application) and passes through the first limiting portion 11225. The portion of the first wire 141 from the first terminal 131 to the portion passing through the first limiting portion 11225 forms a first U-shaped segment. The edge of the partition 11223 in the Z1 direction abuts against the first U-shaped segment (in the illustrated example, the edge of the partition 11223 in the Z1 direction abuts against the straight midpoint of the first U-shaped segment from the inside of the first U-shaped segment). The first limiting portion 11225 locks the first terminal 131 through the first limiting portion 11225. A first wire 141 and a second wire 142 extending from the second terminal 132 through the edge of the partition 11223 in the Z1 direction and passing through the second limiting portion 11226. The portion of the second wire 142 from the second terminal 132 to the portion passing through the second limiting portion 11226 forms a second U-shaped segment. The edge of the partition 11223 in the Z1 direction abuts against the second U-shaped segment (in the illustrated example, the edge of the partition 11223 in the Z1 direction abuts against the straight middle portion of the second U-shaped segment from the inside of the second U-shaped segment). The second limiting portion 11226 locks the second wire 142.

[0085] (Main effects of this implementation method)

[0086] According to the drain valve drive device 100 of this embodiment, the housing 110 has an abutment portion (the edge of the partition 11223 in the Z1 direction) and a limiting portion (a first limiting portion 11225 and a second limiting portion 11226). The wire 140 extends from the terminal 130 through the abutment portion and passes through the limiting portion. The portion of the wire 140 from the terminal 130 to the portion passing through the limiting portion abuts against the abutment portion and forms a U-shaped segment. Therefore, even if the connection strength between the terminal 130 and the wire 140 is weak, when an external force is applied to the portion of the wire 140 away from the terminal 130, the shape of the U-shaped segment can be easily maintained by the limiting portion and the abutment portion. The friction between the abutment portion and the wire 140 and the friction between the limiting portion and the wire 140 are used to reduce or eliminate the force transmitted to the connection portion between the wire 140 and the terminal 130, thereby preventing the connection portion between the terminal 130 and the wire 140 from breaking.

[0087] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments.

[0088] For example, in the above embodiment, the gap between the edge of the partition plate 11223 facing the top plate 11121 and the top plate 11121 can be greater than or equal to the diameter of the wire 140, or can be slightly smaller than the diameter of the wire 140.

[0089] Further, in the above embodiment, the abutting portion is formed by the edge of the partition plate 11223 facing the top plate 11121, but is not limited thereto, and for example, the abutting portion can be formed by an edge of a through-hole (not shown) provided in the partition plate 11223, in which case, the partition plate 11223 can be formed in the terminal cover 1122, or can be formed in the terminal seat 1112.

[0090] Further, in the above embodiment, the first wire 141 and the second wire 142 cross each other when viewed in the X direction, but are not limited thereto, and for example, the partition plate 11223 can be provided so that the thickness direction coincides with the X direction, and the first terminal 131 and the second terminal 132 can be located on the X1 direction side of the partition plate 11223, the first limiting portion 11225 and the second limiting portion 11226 can be located on the X2 direction side of the partition plate 11223, and the first terminal 131 and the first limiting portion 11225 can be located on the Y1 direction side, and the second terminal 132 and the second limiting portion 11226 can be located on the Y2 direction side.

[0091] Further, in the above embodiment, the first limiting portion 11225 and the second limiting portion 11226 are each a groove extending in parallel with the partition plate 11223, that is, in the Z direction, from the end portion on the Z1 direction side of the side plate 11222 to the bottom plate 11221 and penetrating the bottom plate 11221, and the groove is open toward the X2 direction side, but are not limited thereto, and the first limiting portion 11225 and the second limiting portion 11226 can be formed by a hole extending in parallel with the partition plate 11223, and the first limiting portion 11225 and the second limiting portion 11226 can be formed in the entire range from the end portion on the Z1 direction side of the side plate 11222 to the bottom plate 11221, or can be formed only in a part of the range.

[0092] It should be understood that the present application is capable of freely combining each part of the embodiments, or appropriately deforming, omitting each part of the embodiments, within the scope thereof.

Claims

1. A drain valve drive apparatus for driving the action of a poppet of a drain valve, comprising: A housing; A drive source disposed in the housing and a terminal electrically connected to the drive source; And a wire connected to the terminal, characterized in that The housing has an abutting portion and a limiting portion, The wire extends from the terminal through the limiting portion via the abutting portion, The portion of the wire from the terminal to the limiting portion abuts against the abutting portion and forms a U-shaped section, The terminal includes a first terminal and a second terminal, The wire includes a first wire and a second wire, The limiting portion includes a first limiting portion and a second limiting portion, The first wire extends from the first terminal through the first limiting portion via the abutting portion, The portion of the first wire from the first terminal to the first limiting portion forms a first U-shaped section, The abutting portion abuts against the first U-shaped section, and the first limiting portion clamps the first wire, The second wire extends from the second terminal through the second limiting portion via the abutting portion, The portion of the second wire from the second terminal to the second limiting portion forms a second U-shaped section, The abutting portion abuts against the second U-shaped section, and the second limiting portion clamps the second wire, The first terminal and the second limiting portion are located on one side of the abutting portion, The second terminal and the first limiting portion are located on the other side of the abutting portion.

2. The drain valve drive device according to claim 1, wherein A partition is provided in the housing, The first terminal and the second limiting portion are located on one side in the thickness direction of the partition, The second terminal and the first limiting portion are located on the other side in the thickness direction of the partition, The abutting portion is formed by an edge of a through-hole provided in the partition.

3. The drain valve drive device according to claim 1, wherein The housing has a top plate and a partition provided in the housing, vertically opposite and spaced apart from the top plate, The first terminal and the second limiting portion are located on one side in the thickness direction of the partition, The second terminal and the first limiting portion are located on the other side in the thickness direction of the partition, The abutting portion is formed by an edge of the partition facing the top plate.

4. The drain valve drive device according to claim 3, wherein The first limiting portion is a groove or a hole extending parallel to the partition, And / or The second limiting portion is a groove or a hole extending parallel to the partition.

5. The drain valve drive device according to claim 4, wherein The housing includes a first case and a second case that are assembled and disassembled in a first direction, The first case has the top plate whose thickness direction coincides with the first direction, The second case has the first limiting portion, the second limiting portion, and the partition.

6. The drain valve drive device according to claim 5, wherein The first case includes a first case main body and a terminal seat formed integrally, The second case includes a second case main body and a terminal cover formed separately, The first case main body and the second case main body enclose a space for accommodating the drive source, The terminal seat and the terminal cover enclose a space for accommodating the first terminal and the second terminal, The terminal seat has the top plate, The terminal cover has the first limiting part, the second limiting part and the partition plate, The terminal cover is engaged with the second shell main body and the terminal seat respectively.

7. The drain valve driving device according to claim 1, wherein the driving source is a motor including a stator and a rotor, the stator has a stator core and a coil wound around the stator core, the rotor rotates relative to the stator, and a coil wire constituting the coil is connected to the first terminal and the second terminal respectively.

8. The drain valve driving device according to any one of claims 1 to 7, wherein the wire is connected to the terminal by fusion welding. ​ ​ ​ ​ ​

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