JP2008014345A - Motor operated valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor operated valve in which a rotation stopping member mounted to a stator is engaged with a pipe for introducing or discharging a refrigerant and stops rotation of a stator with respect to a can, and is easily mounted to the stator. <P>SOLUTION: On a bottom wall plate 95, a projection part 97 is formed at a position vertically overlapping with a metal exposed portion of a stator main body 43. A gap 93 is formed between the projection part 97 and the metal exposed portion of the stator main body 43. A top wall 101 of the clip-like elastic rotation stopping member 100 is inserted into the gap 93. The rotation stopping member 100 is fixed to a yoke 51 of the stator main body 43 and the projection part 97 by elastic contact by spring pressure due to restoration force of the rotation stopping member 100 itself, and therefore, it does not come out of the gap 93. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electric valve that is incorporated in an air conditioner, a refrigerator, or the like and adjusts the flow rate of a fluid such as a refrigerant.

  FIG. 7 is a longitudinal sectional view showing an example of a conventional motor-operated valve disclosed in Patent Document 1, and FIG. 8 is a perspective view of a rotation preventing member used in the motor-operated valve of FIG. The motor-operated valve 10 includes a valve body 20 having a valve chamber 21 and a valve seat 22 formed therein, a valve body 23 that opens and closes the valve seat 22 by opening and closing the valve seat 22, and a valve body 20. And a fixed can 40. The can 40 incorporates a rotor 30, and a stator 42 that rotationally drives the rotor 30 is fitted on the can 40. The valve main body 20 is provided with a pipe 20a extending downward from the bottom surface of the valve main body 20 and a pipe 20b extending horizontally from the side surface of the valve main body 20, and these pipes 20a and 20b provide a valve. A refrigerant is introduced into the chamber 21, and the refrigerant in the valve chamber 21 is led out.

  The can 40 is made of a non-magnetic metal and has a top cylindrical shape. The can 40 is fixed to the flange plate 41 fixed to the upper portion of the valve body 20 by welding or the like, and the inside is kept airtight. The stator 42 includes a stator main body 43 and a resin exterior portion 44 that covers the outside of the stator main body 43. The stator main body 43 includes a yoke 51 made of a magnetic material and upper and lower stator coils 53 and 53 wound around the yoke 51 via a bobbin 52. The exterior portion 44 has a fitting hole 44 a that is fitted on the can 40.

  A valve body 23 composed of a needle valve is formed at the lower end of the valve shaft 24. The rotation of the rotor 30 is converted into an operation of contacting and separating from the valve seat 22 of the valve body 23 by the drive mechanism. This driving mechanism is screwed into a cylindrical guide bush 26 fixed to the valve body 20 so as to extend in the direction of the rotor 30 and having a fixing screw portion 25 formed therein, and the fixing screw portion 25 of the guide bush 26. This is a screw feed mechanism including a valve shaft holder 32 having a moving screw part 31. The fixing screw portion 25 is configured as a male screw formed on the outer periphery of the guide bush 26. Further, the moving screw portion 31 is configured as a female screw formed on the inner periphery of the valve shaft holder 32.

  The valve shaft holder 32 is in the shape of a top cylinder that is located outside the guide bush 26 and opens downward, and the upper reduced diameter portion of the valve shaft 24 is fitted to the center of the top wall of the push nut 33. It is connected by. The valve shaft 24 is fitted into the center of the valve shaft holder 32 so as to be movable up and down, and is always urged downward by a compression coil spring 34 that is mounted in the valve shaft holder 32. On the side wall of the guide bush 26, a pressure equalizing hole 26b for equalizing the pressure between the valve chamber 21 and the inside of the can 40 is formed.

  A return spring 35 formed of a cylindrical compression coil spring is attached to the outer periphery of a push nut 33 that is press-fitted and fixed to the upper end of the valve shaft 24. When the fixing screw portion 25 of the guide bush 26 and the moving screw portion 31 of the valve shaft holder 32 are disengaged, the return spring 35 comes into contact with the inner surface of the can 40 and the screw portions 25 and 31 are screwed together. Energize to return.

  The valve shaft holder 32 and the rotor 30 are coupled via a support ring 36. The upper protrusion of the valve shaft holder 32 is fitted into the inner peripheral hole portion of the support ring 36, and the outer periphery of the upper protrusion is caulked to couple the rotor 30, the support ring 36, and the valve shaft holder 32.

  A ring-shaped lower stopper body 27 is fixed to the guide bush 26, and a plate-shaped lower stopper piece 27a is projected from the upper portion thereof. Further, a ring-shaped upper stopper body 37 is fixed to the valve shaft holder 32, and a plate-shaped upper stopper piece 37a projects from the lower part thereof so as to be engageable with the lower stopper piece 27a. The lower stopper body 27 is fixed to a spiral groove portion 26 a formed on the outer periphery of the guide bush 26, and the upper stopper body 37 is fixed to a spiral groove 32 b portion formed on the outer periphery of the valve shaft holder 32.

  The stator 42 has a plurality of lead terminals 54 connected to the stator coils 53, 53, and a connector 56 to which a plurality of lead wires 55 are connected is connected to the lead terminals 54. A cover 57 covering the connector 56 is welded to the stator 42, and the inside of the cover 57 is filled with a filler 58 such as an epoxy resin.

  The can 40 is fitted into the fitting hole 44 a of the exterior portion 44 of the stator 42, and rotation with respect to the valve main body 20 and the can 40 is prevented by a rotation preventing member 59 welded to the lower surface of the exterior portion 44. As shown in FIG. 8, the rotation preventing member 59 has a horizontal top wall 60 in which a mounting hole 60 a is formed, and two arm portions 61, 61 extending downward from both side edges of the top wall 60. Yes. The top wall 60 is formed with a positioning portion 62 that protrudes upward from one end thereof. The anti-rotation member 59 is made of a metal plate having elasticity such as stainless steel.

  The two arm portions 61, 61 have a parallel portion extending downward from the top wall 60 and a curved portion continuous below the parallel portion, and the curved portion extends from the side surface of the valve body 20 in the horizontal direction. It is formed with a radius of curvature equivalent to the outer diameter of. The rotation preventing member 59 is fixed by inserting a protrusion protruding from the lower surface of the stator 42 into the mounting hole 60a and crushing the protrusion with an ultrasonic welder. Reference numeral 45 ′ in FIG. 7 indicates a crushed protrusion. The positioning portion 62 engages with a corner portion of the stator 42 to prevent the rotation preventing member 59 from rotating with respect to the protrusion 45 ′.

  According to the motor-operated valve configured as described above, the stator 42 is fitted with its fitting hole 44a into the can 40 and pushed in the direction of the valve body 20, so that the two arm portions 61, 61 of the detent member 59 are moved. Since the horizontal pipe 20b is sandwiched and held in the radial direction, the stator 42 can be fixed to the valve body 20 and the can 40 very easily and reliably.

  Patent Document 2 shows another example of a detent member. FIG. 9 is a perspective view of the detent member. The anti-rotation member 70 is formed of a metal plate having elasticity such as stainless steel, and has a clip-like gripping portion 73 having two arm portions 72 a and 72 b extending downward, and the gripping portion 73 and the connecting portion 74. And a flat plate-like base portion 75 connected via the. The base portion 75 is parallel to the top wall of the grip portion 73 and extends longer to the left and right than the top wall. The base 75 is formed in an arc-shaped portion 75e with a central portion of the edge 75b opposite to the edge 75a close to the connecting portion 74 being recessed.

  The two arm portions 72a and 72b extend downward from the top wall of the gripping portion 73, and inwardly inclined portions 72c and 72d; curved portions 72f and 72f continuous below the curved portions 72f and 72f; And inclined portions 72g and 72h that are bent at the same time. The curved portions 72f and 72f are formed with a radius of curvature equivalent to the outer diameter of the horizontal pipe 20b (see FIG. 7). Further, attachment holes 76 are provided in the connecting portion 74, and attachment holes 75 d are provided in the left and right extending portions 75 c of the base portion 75.

  According to the anti-rotation member 70 configured in this manner, the anti-rotation member 70 is inserted into the fitting hole 44a of the stator 42 shown in FIG. Since the curved portions 72f and 72f of the arms 72a and 72b sandwich and hold the horizontal pipe 20b in the radial direction, the stator 42 can be easily and reliably fixed to the valve body 20. As shown in FIG. 10, the anti-rotation member 70 has its mounting holes 75d, 75d and 76 formed in three of the plurality of protrusions 45 formed at predetermined intervals around the fitting hole 44a on the lower surface of the stator 42, respectively. The projecting portion of the projection 45 fitted to 75d is fixed by crushing it with, for example, an ultrasonic welder. FIG. 10 is a longitudinal sectional view showing the can 40, its internal configuration, and the valve body.

  FIG. 11 is a view for explaining a state in which the rotation preventing member 70 is fixed to the lower portion of the stator 42, and is a view of FIG. 10 viewed from the direction of the arrow. In FIG. 11, the mounting holes 75d, 75d and 76 of the detent member 70 are fitted to three of the plurality of projections 45 formed at a predetermined interval around the fitting hole 44a of the stator 42. The circular arc portion 75e of the rotation preventing member 70 is attached along the circumferential edge of the fitting hole 44a. In addition, 45 'of FIG. 10, 11 has shown the state which crushed the front-end | tip of the processus | protrusion 45 inserted in the attachment hole 75d with the ultrasonic welder.

  In FIG. 11, the position of the lead wire 55 is 180 ° away from the pipe (not shown) held by the anti-rotation member 70, but the lead wire 55 is to be moved to another position. There is also. In this motor-operated valve, the mounting position of the anti-rotation member 70 with respect to the stator 42 can be shifted at an interval of 45 ° by changing the projection 45 for fitting the attachment holes 75d, 75d, 76 of the anti-rotation member 70. Therefore, the position of the lead wire 55 relative to the pipe can be changed.

  In the conventional motor-operated valve described above, there is a problem in that it takes time to manufacture since the operation of crushing the protrusion formed on the stator with a welder or the like is required when attaching the anti-rotation member to the stator.

  Further, since the anti-rotation member once attached to the stator cannot be removed, there is a problem that it is not possible to cope with the necessity of changing the attachment position of the anti-rotation member with respect to the stator due to the specification change.

Furthermore, there is a problem that a coil constituting the stator is charged during the operation of the motor and a discharge is generated between the rotor and noise as a control signal for controlling the opening degree of the valve body and the like, resulting in a malfunction. It was.
JP 2000-346226 A JP 2003-185302 A

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a motor-operated valve in which a detent member that engages a pipe for introducing or deriving a refrigerant and prevents rotation of the stator with respect to the stator is provided in the stator. An object of the present invention is to provide a motor-operated valve that can be easily attached to a stator of a rotation preventing member.
Also. Another object of the present invention is to provide an electric valve capable of changing the mounting position of a rotation preventing member with respect to a stator.
Another object of the present invention is to provide a motor-operated valve capable of preventing the stator coil from being charged during the operation of the motor and causing discharge from the rotor.

  In order to solve the above-mentioned problems, an electric valve according to the present invention includes a valve body having a valve chamber and a valve seat formed therein, and a valve body that opens and closes an opening of the valve seat by contacting and separating from the valve seat. A can fixed to the valve body, a rotor built in the can, a stator that is rotatably fitted to the can and rotationally drives the rotor, and the rotation of the rotor is controlled by the valve of the valve body. A drive mechanism for converting into a contact / separation operation with respect to the seat, and a refrigerant provided in the valve body so as to extend outward, or for introducing the refrigerant in the valve chamber to the outside A pipe, an elastically deformable detent member that prevents rotation of the stator relative to the can by engaging with the pipe, and a detent member provided on the stator. Comprises a protrusion portion, it is characterized in that the detent member by elastically deforming the detent member is detachable to the projecting portion.

According to the motor-operated valve of the present invention, when attaching the anti-rotation member to the stator, complicated work such as welding and screwing is not required, and it can be easily attached with one touch, so that workability is improved.
Further, the resin exterior portion covering the outside of the stator is composed of an exterior portion having a fitting hole into which the can is fitted, and a bottom wall portion attached to the exterior portion, and a protrusion on the bottom wall portion. Since the structure of the mold for molding the exterior portion can be simplified, the manufacturing cost is reduced.
Further, the anti-rotation member is made of a material having good conductivity, and the stator coil and the pipe are electrically connected via the anti-rotation member in a state where the anti-rotation member is mounted on the protrusion. As a result, it is possible to prevent electric discharge from occurring between the coil of the stator and the rotor. Therefore, it is possible to prevent the control signal from being disturbed to cause a malfunction, and the reliability is improved.
Also, by providing a plurality of protrusions on the stator, it is necessary to change the mounting position of the anti-rotation member with respect to the stator after changing the specifications after mounting the anti-rotation member on the protrusion. Therefore, it is possible to share parts and reduce costs such as mold costs.

  Hereinafter, embodiments of a motor-operated valve according to the present invention will be described with reference to the accompanying drawings. 1A and 1B are views showing a main part of a stator of an electric valve according to the present invention, wherein FIG. 1A is a longitudinal section, and FIG. 1B is a bottom view thereof. In the following drawings illustrating the embodiments of the present invention, elements and parts equivalent to those of a conventional motor-operated valve are denoted by the same reference numerals as those already used, and the description thereof is omitted. The motor-operated valve according to the present invention basically opens and closes a valve body having a valve chamber and a valve seat formed therein, and an opening of the valve seat by contacting and separating from the valve seat, similar to a conventional motor-operated valve. A valve body, a can fixed to the valve body, a rotor built into the can, a stator that is externally driven by the can and rotationally drives the rotor, a drive mechanism that converts the rotation of the rotor into a contact / separation operation of the valve body to the valve seat, The pipe is provided so as to protrude outward, and is provided with a pipe for introducing the refrigerant into the valve chamber or leading the refrigerant in the valve chamber to the outside, and is built into the can by the electromagnetic action of the stator. The rotating rotor rotates, and the valve body is brought into contact with and separated from the valve seat formed in the valve chamber.

  The motor operated valve shown in FIG. 1 shows a stator 42 in a state where a bottom wall portion to which a rotation preventing member is attached is removed. As shown in FIG. 1, the outer side of the metal yoke 51 constituting the stator body 43 is covered with a resin exterior portion 44. The inside of the yoke 51 is a fitting hole 44a into which the can is fitted. The exterior portion 44 is formed with an inward flange portion 46 that protrudes inward from a portion slightly above the lower end portion, and covers a part of the bottom surface of the yoke 51, but at a plurality of locations of the flange portion 46. The yoke 51 is exposed through the notch 47 formed. The periphery of the flange portion 46 is an annular protrusion 48 that is raised with a step. The notch 47 is formed at a position corresponding to a position where a later-described detent member is selectively attached. In the illustrated example, the notch 47 is formed at an angular interval of 90 degrees around the central axis of the stator 42. ing.

  2 shows a bottom wall portion 95 attached to the exterior portion 44, where (a) is a side sectional view, (b) is a plan view, and (c) is an enlarged view of portion A in (b). A perspective view and (d) are BB sectional views in (b). The bottom wall portion 95 shown in FIG. 2 is attached with a rotation preventing member to be described later, and is fitted inside the annular protrusion 48 (see FIG. 1) at the bottom of the exterior portion 44 that covers the stator main body 43. It is a substantially annular plate having a size to be joined and having a hole 95a in the center. The bottom wall portion 95 has an inward flange portion 96 having a shape corresponding to the flange portion 46 (see FIG. 1) of the exterior portion 44. The flange portion 96 is provided with tongue-like projections 97 projecting radially inward at positions corresponding to the notches 47 (see FIG. 1) of the exterior portion 44, on both sides thereof. Are formed with slits 98, 98. That is, the notch 47 of the exterior portion 44 and the protrusion 97 of the bottom wall portion 95 are formed so as to overlap in the vertical direction. The slits 98 on both sides of the protrusion 97 are formed with a width equal to or greater than the plate thickness of a rotation preventing member to be described later. An annular central hole 95 a in the bottom wall portion 95 is used for assembling the valve body 20.

  A recess 99 is formed on the upper surface of each protrusion 97 so as to extend radially outward of the bottom wall 95 from a position slightly closer to the outer periphery of the bottom wall 95 than the tip. The depression 99 is formed in a ship bottom shape that is deepest on the center line along the radial direction of the bottom wall portion 95 and has a gentle slope in which both sides of the center line are inclined downward toward the center line.

  The bottom wall portion 95 is separate from the exterior portion 44, but is formed of the same resin material as the exterior portion 44. By making the bottom wall portion 95 separate from the exterior portion 44, a mold having a complicated slide structure as in the case of integrally molding the bottom wall portion 95 and the exterior portion 44 is not required, and the mold structure is simple. Thus, molding becomes easy. Moreover, since the bottom wall part 95 consists of the same material as the exterior part 44, it can be easily welded with respect to the exterior part 44 by ultrasonic welding. A plurality of fitting recesses 95b are provided on the top surface of the bottom wall portion 95, and a fitting projection 44b (see FIG. 1) is provided on the bottom surface of the exterior portion 44 at a position corresponding to the fitting recess 95b. ) And the bottom wall portion 95 is positioned with respect to the exterior portion 44 by fitting the fitting convex portion 44b and the fitting concave portion 95b.

  FIG. 3 shows a state in which the bottom wall portion 95 is assembled to the exterior portion 44, where (a) is a longitudinal sectional view and (b) is a bottom view thereof. In a state where the bottom wall portion 95 is assembled to the exterior portion 44, a slight gap 93 (see FIG. 6B) is formed between the upper surface of the protrusion 97 and the lower surface of the yoke 51 of the stator body 43. It becomes a state.

  FIG. 4 shows a detent member to be attached to the motor-operated valve shown in FIG. 4A is a front view of the rotation prevention member, FIG. 4B is a top view, FIG. 4C is a side view, and FIG. 4D is an illustration showing a deformed state when the rotation prevention member is attached to the bottom wall. FIG. The anti-rotation member 100 has a clip-like shape formed by bending a metal plate having elasticity and good conductivity, and a top wall 101 that engages with the depression 99 shown in FIG. 101 has two arms 102 and 102 that extend downward from both ends of 101 and engage with a pipe 20b (see FIG. 7). Each arm portion 100b is formed with a holding portion 103 bulging outward in an arc shape corresponding to the outer shape of the pipe 20b. The distal end portion 104 of the holding portion 103 of each arm portion 102 is bent outward so that the pipe 20b can be smoothly received.

  The top wall 101 of the anti-rotation member 100 has a ship bottom shape with the center portion projecting downward corresponding to the depression 99 of the protrusion 97 of the bottom wall portion 95, and on the left side of FIG. As shown in the figure, when both arm portions 102 and 102 are picked and deformed so as to approach each other, the central portion of the top wall 101 is gradually deformed so as to become flat. In this state, it becomes easy to insert the flat top wall 101 into the gap 93 shown in FIG.

  5 is a view showing a state in which the anti-rotation member 100 shown in FIG. 4 is mounted on one protrusion 97 of the assembly of the exterior portion 44 and the bottom wall portion 95 shown in FIG. The longitudinal cross-sectional view of the state which cut | disconnected the center part of the made rotation prevention member 100 to the radial direction of the bottom wall part 95, (b) is the bottom view, (c) is the state which made the attached rotation prevention member 100 the front FIG. In the rotation preventing member 100, any one of the plurality of protrusions 97 formed on the bottom wall portion 95 is selected according to the positional relationship between the lead wire 55 and the pipe 20b (see FIG. 7). , Attached to the bottom wall 95. Since the projecting portion 97 is formed so as to be directed radially inward of the bottom wall portion 95, the rotation preventing member 100 is attached to the projecting portion 97 so as to be pushed outward from the radially inner side of the bottom wall portion 95. . At this time, both arms 102 and 102 of the rotation preventing member 100 are picked with fingers and elastically deformed inward and inserted into slits 98 and 98 formed on both sides of the protrusion 97. Since the innermost positions of the slits 98 and 98 are limited, the rotation preventing member 100 is not pushed radially outward beyond a predetermined position.

  As shown in FIG. 4D, the top wall 101 deformed flat is inserted into the gap 93 (see FIG. 6B) formed between the lower portion of the stator body 43 and the protrusion 97. Thereafter, when the deformation caused by picking both the arms 102 and 102 is released, the top wall 101 is restored to its original shape so as to follow the depression 99 formed in the protrusion 97 of the bottom wall 95. try to. As a result, the top wall 101 of the anti-rotation member 100 inserted into the gap 93 is elastically attached to the lower portion of the stator main body 43 and the protrusion 97 of the bottom wall portion 95. The anti-rotation member 100 is fixed by the elastic force at this time, so that it does not come out of the depression 99 of the protrusion 97. As described above, since the mounting operation of the anti-rotation member 100 is simple and easy, assembly is easier than welding and screwing, and fixing after the anti-rotation member 100 is inserted is ensured.

  Further, in the present embodiment, the top wall 101 of the rotation preventing member 100 is in contact with the yoke 51 of the stator main body 43 in a state where the rotation preventing member 100 is mounted on the protrusion 97, and the coil 53 of the stator main body 43 is arranged. Is electrically connected to the pipe 20b through the anti-rotation member 100. Therefore, even if the coil 53 is charged by the action of the capacitor, the charged charge is grounded to the pipe 20b through the anti-rotation member 100, so that the motor-operated valve is prevented from malfunctioning due to the charged charge of the stator body 43. be able to.

  Note that the protrusion 97 can also be formed in such a manner as to protrude outward in the radial direction of the bottom wall portion 95. In this case, the mounting of the rotation preventing member 100 to the protrusion 97 is performed from the radially outer side to the inner side, so that the mounting operation is extremely easy.

In the present invention, the attached anti-rotation member 100 can be easily removed. First, the two arm portions 102 and 102 of the detent member 100 are elastically deformed so as to approach each other. As a result, the top wall 101 becomes flat, and the top wall 101 is moved radially inward of the bottom wall portion 95 via the gap 93 (see FIG. 6) to be detached from the protrusion 97. Thus, even if the position of the anti-rotation member 100 with respect to the pipe 2b, that is, the attachment position of the anti-rotation member 100 to the stator 42 is changed due to the specification change, the attached anti-rotation member 100 can be removed. It is possible. Therefore, the mold can be shared, and the manufacturing cost is reduced.
As mentioned above, although the Example of the motor operated valve by this invention was described, the resin-made bottom wall part 95 does not necessarily need to be a different body from the exterior part 44, and these may be integrally molded. In addition, various modifications can be made to the above embodiment without departing from the gist of the present invention.

The figure which shows the principal part of the stator of the motor operated valve which is one Embodiment of this invention. The figure which shows the bottom wall member which is a part of stator of embodiment. The figure which shows the state which assembled | attached the bottom wall member shown in FIG. 2 to the principal part of the stator shown in FIG. The figure which shows the rotation prevention member of embodiment. The figure which shows the state which mounted | wore the assembly shown in FIG. 3 with the rotation prevention member shown in FIG. The expanded sectional view which shows the mounting state of a rotation prevention member. The longitudinal cross-sectional view which shows an example of the conventional motor operated valve. The perspective view which shows the rotation prevention member assembled | attached to the motor operated valve shown in FIG. The perspective view which shows another example of the non-rotating member assembled | attached to the conventional motor operated valve. The longitudinal cross-sectional view of the motor operated valve which assembled | attached the rotation prevention member shown in FIG. The bottom view of the motor operated valve shown in FIG.

Explanation of symbols

20, valve body 20a, 20b, pipe 21, valve chamber 22, valve seat 23, valve body 24, valve shaft 25, fixing screw 26, guide bush 26a, spiral groove 26b, · Pressure equalizing hole 27 · · Lower stopper body (fixed stopper) 27a · · Lower stopper piece 30 · · Rotor 31 · · Moving screw portion 32 · · Valve shaft holder 32b · · Spiral groove 33 · · Push nut 34 · · Compression Coil spring 35 ..Return spring 36 ..Support ring 37 ..Upper stopper body (moving stopper) 37 a ..Upper stopper piece 40 ..Can 41 ..Large plate 42 ..Stator 43 ..Stator body 44. Part 44a, fitting hole 51, yoke 52, bobbin 53, stator coil 54, lead terminal 55, lead wire 56, connector 57, cover 58, filler 93, gap 95 · Sokokabeban 96 ... flange portion 97 protruding portion 98, 98 slit 99 dent 100 rotation preventing member 101 base top wall 102 arms 103 holding portion 104 tip

Claims (4)

  A valve body having a valve chamber and a valve seat formed therein, a valve body that opens and closes the opening of the valve seat by contacting and separating from the valve seat, a can fixed to the valve body, and a can A built-in rotor, a stator that is rotatably fitted to the can and that rotationally drives the rotor, a drive mechanism that converts rotation of the rotor into contact and separation of the valve body with respect to the valve seat, and the valve body A pipe that is provided so as to extend outward and introduces the refrigerant into the valve chamber or leads the refrigerant in the valve chamber to the outside, and is attached to the stator and engaged with the pipe. An anti-deformable rotation-preventing member that prevents rotation of the stator relative to the can, and a protrusion provided on the stator for attaching the anti-rotation member, and elastically deforming the anti-rotation member Electrically operated valve which is a detachable said detent member to the protrusion by Rukoto.   The stator includes a stator body, an exterior portion that covers the outside of the stator body and has a fitting hole that fits the can, and a bottom wall portion that is attached to the exterior portion. The motor-operated valve according to claim 1, wherein a protrusion is formed.   The anti-rotation member is formed of a material having good conductivity, and the stator coil and the pipe are electrically connected to the anti-rotation member via the anti-rotation member in a state where the anti-rotation member is mounted on the protrusion. The motor-operated valve according to claim 1, wherein the motor-operated valve is configured to be connected.   The motor-operated valve according to any one of claims 1 to 3, wherein a plurality of the protrusions are provided on the stator.

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