JP2000074245A - Electric operated valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen an upper part of a stator and facilitate a turn lock and a coming-off lock of the stator relating to a can by a single lock implement, by holding the lock implement by a lock hold piece and holding the stator locked to a valve body part by the lock implement. SOLUTION: An electric operated valve 1 is provided with a valve body part 2 and a bottomed cylindrical can 3 secured to the valve body part 2, a ring-shaped stator 5 having an insertion hole 4 in the center part is externally fitted to the can 3, and a lock implement 30 for a turn lock and a coming-off lock is arranged in a lower end face of the stator 5. Further, the stator 5 is held to the can 3 by the lock implement 30, a hold part of the stator 5 is not provided in its upper surface, and thus movement in a vertical and rotational direction of the stator 5 can be stopped, and an upper part of the stator 5 can be lessened. In this way, the electric operated valve can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor-operated valve incorporated in an air conditioner, a refrigerator, and the like.
The present invention relates to a motor-operated valve capable of easily and reliably positioning and assembling a stator with respect to a can.

[0002]

2. Description of the Related Art FIG.
7 is shown. Motorized valve 1 'in the illustrated example
A ring-shaped stator 5 'having an insertion hole 4' at the center is fitted on a cylindrical can 3 'having a bottom fixed to the valve body 2'. It is designed to stop and prevent rotation.

The valve body 2 'is provided with fluid inlet / outlet passages 2a' and 2b ', and the interior between the fluid inlet / outlet passages 2a' and 2b 'is a needle valve as a valve body. A valve seat (not shown) to which the (not shown) comes and comes is provided. A rotor with a permanent magnet (not shown) is built in the can 3 ', and a stator coil (not shown) and a yoke (not shown) are provided above and below the stator 5'. The stored stator coil is energized and energized through a cable (not shown) in which lead wires are bundled and a connector 7 ′ provided on the outer periphery of the stator 5 ′, thereby rotating the rotor and rotating the needle. By opening and closing the valve, the fluid inlet / outlet passages 2a ', 2
The flow rate of the fluid flowing between b ′ is adjusted.

A mounting table 51 having a predetermined height is protruded from the upper surface of the stator 5 '. A sheet metal for preventing the stator 5' from rotating and coming off from the can 3 'is provided on the upper surface of the mounting table 51. A pressing and locking member 50 is fixed by a screw 52 via a washer 53. The pressing and locking device 50
A substantially U-shaped spring portion 55 including a mounting plate portion provided with a hole 54 through which the screw 52 is passed, two vertical side portions and a bent portion connecting them, a rear end bent portion, The spring portion 55 has a relatively thin spherical crown-shaped locking projection 56a protruding from a substantially central portion of the outer side surface of the vertical side portion.

[0005] On the outer peripheral surface of the upper part of the can 3 ', there are provided four engaging recesses 56b at a predetermined angular interval (90 degrees). The engaging concave portion 56b is a relatively shallow spherical crown-shaped recess fitted on the same plane as the locking convex portion 56a provided on the spring portion 55 of the pressing and locking device 50.

[0006] The motor-operated valve 1 'having such a configuration is usually fixed in a device such as an air conditioner. In addition, since the mounting posture of the stator 5 'with respect to the can 3' needs to be changed according to the direction in which the cable is routed, the stator 5 'is appropriately rotated while being pushed downward from above with respect to the can 3'. The locking projection 56a of the locking tool 50 is fitted into one of the four engagement recesses 56b provided on the can 3 '. That is, the position of the connector 7 'with respect to the fluid inlet / outlet passages 2a' and 2b 'is selected, and the stator 5' is moved so that the locking projection 56a is fitted into the selected engagement recess 56b. is there. At this time, the stator 5 '
6 ', the lower surface of which is provided at the lower part of can 3'
And is prevented from being pushed further.

[0007]

By the way, in the electric valve 1 'as described above, since the pressing and locking member 50 is mounted on the upper surface of the stator 5', the can 3 is located above the stator 5 '. In addition to the upper end of the ', a space is required for the pressing and locking device 50, and the shape of the pressing and locking device 50 may be an obstacle when incorporated in equipment such as an air conditioner. Further, since the pressing and locking device 50 requires components such as screws 52 and washers 53, the number of components is large,
It requires a tightening tool such as a screwdriver.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to provide a motor-operated valve in which the position of a connector with respect to a fluid inlet / outlet passage can be selected. It is an object of the present invention to provide a motor-operated valve that can easily prevent the rotation of the motor and the stopper from falling off with a single locking tool.

[0009]

In order to achieve the above object,
An electric valve according to the present invention is an electric valve including a valve body, a can fixed to the valve body, a stator fitted to the can, and a locking member for the stator. Is characterized in that a locking holding piece is formed on the lower surface thereof, the locking tool is held by the locking holding piece, and the stator is locked and held by the locking tool by the locking tool. .

[0010] In a preferred specific embodiment of the electric valve according to the present invention, the locking holding piece comprises a plurality of substantially L-shaped members protruding outward in the radial direction. A thin plate-shaped substrate, a pair of locking pieces extending in parallel with a gap from the substrate, and a bifurcated holding piece extending in a direction opposite to the locking pieces; While holding the pair of locking pieces between the holding pieces,
The bifurcated holding piece is engaged with the fluid inlet / outlet passage of the valve body, and the pair of locking pieces have projecting claws facing inward each other. Has a square hole at the approximate center of its upper part, and has a pair of legs at its lower part, and the pair of legs communicates with the space between the legs and the square hole, or The locking holding piece is composed of a plurality of substantially L-shaped members protruding outward in the radial direction, and the locking tool includes a thin plate-shaped substrate and a pair of engaging members extending in parallel with a gap from the substrate. A stop piece, and a tongue-shaped holding piece extending to the opposite side to the locking piece, and holding the pair of locking pieces between the lower surface of the stator and the locking holding piece; A holding piece having a shape of a circle is pressed and locked on the peripheral surface of the valve body.

Further, as another specific mode of the motor-operated valve according to the present invention, the locking holding piece includes a pair of shaft supporting pieces,
A locking tool holding shaft supported by the shaft supporting piece, wherein the locking tool includes a substrate, a pair of bent legs extending from the substrate, and a leg portion between the pair of legs. An arm bent to the opposite side, holding the pair of legs on the holding shaft, locking the arm to a flange-shaped portion that is a joint between the valve body and the can, Further, the substrate is pressed and locked on the peripheral surface of the valve body, a plurality of engaging recesses are formed on the peripheral surface of the valve body, and one locking projection is provided on the substrate of the locking tool. And that the locking projections are selectively fitted to the plurality of engagement recesses, or that the projections and depressions are formed on the peripheral surface of the valve body and the substrate of the locking tool is curved. ,
An uneven shape is formed in the curved portion, and the uneven shape of the substrate is selectively fitted to the uneven shape of the valve body.

As described above, in the electric valve according to the present invention, the locking member for the stator is disposed on the lower surface of the stator and is held by the locking holding piece formed on the lower surface, so that the upper surface of the stator is formed. This eliminates the need for a space in the case of providing the above, and makes it possible to reduce the space above the stator. In addition, since the locking tool is configured to be locked and fixed to the stator on the lower surface of the stator, and the upper portion of the stator can be only the can upper portion, it is easy to provide a can cover on the stator, The can and the insertion hole are not exposed to the outside, so that deterioration of the can and the like can be prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of a motor-operated valve according to the present invention will be described below with reference to the drawings. In describing some of the embodiments, components having the same function are denoted by the same reference numerals. 1 to 5
1 shows a first embodiment of a motor-operated valve according to the present invention. FIG. 1 is a perspective view of the motor-operated valve 1, FIG. 2 is a side view of the motor-operated valve 1, and FIG. FIG. 4 is an exploded perspective view of the electric valve 1, and FIG. 5 is a partially exploded perspective view of the electric valve 1.

The motor-operated valve 1 comprises a valve body 2 and the valve body 2
A ring-shaped stator 5 having an insertion hole 4 at the center is fitted to the can 3, and a lower end surface of the stator 5 is A locking member 30 for preventing rotation and retaining is arranged.

The valve body 2 shown in FIG. 3 has fluid inlet / outlet passages 2a and 2b connected by furnace brazing in order to eliminate a hot water washing step after brazing. A valve seat 61 to which a needle valve 60 serving as a valve body comes in contact with or separates from the fluid inlet / outlet passages 2a and 2b is disposed.
A rotor 62 is built in the can 3 fixed to the upper portion of the valve body 2 via the flange 6, and a stator coil 63 and a yoke 64 are stored above and below the inside of the stator 5. The stator coil 63 is energized and energized through the cable 8 on which the lead wires are bundled and the connector 7 provided on the outer periphery of the stator 5 to rotate the rotor 62, thereby opening and closing the needle valve 60. Thus, the flow rate of the fluid flowing between the fluid inlet / outlet passages 2a and 2b is adjusted.

A guide bush 66 located above the valve chamber 65 is fixed inside the valve body 2. A female screw portion 67 is formed on the inner periphery of the guide bush 66, and a male screw portion 69 formed on the outer periphery of the valve shaft holder 68 is screwed to the female screw portion 67. A valve shaft 70 forming a valve body 60 at the lower end is slidably fitted into the valve shaft holder 68, and the valve shaft 70 is contracted to the valve shaft holder 68. It is always urged downward by the compression coil spring 71. Here, an annular gap 72 is provided between the valve shaft 70 and the valve shaft holder 68 so that a fluid can pass therethrough.
Is provided, and the fluid in the valve chamber 65 passes through the annular gap 72 and passes through the hole 73 of the valve shaft holder 68 into the can 3 to equalize the pressure between the valve chamber 65 and the inside of the can 3. Thus, the shape of the valve main body 2 is simplified and the assembling accuracy is improved (see FIG. 3).

Furthermore, the fitting of the rotor 62 and the valve shaft 70 in the present embodiment shown in FIG. 3 is performed by mounting the valve shaft holder 68 and the sleeve 75 on the valve shaft 70 having both functions of the elevating shaft and the valve shaft.
This is performed by inserting an integral molded product of the above. That is, the fitting between the rotor 62 and the valve shaft 70 is performed by inserting the spring 71, the integrally formed product of the valve shaft holder 68 and the sleeve 75, the magnet 76, and the nut 77 in this order from the upper end of the valve shaft 70. It is suitable for automation of electric valve assembly. The sleeve 75
The magnet 76 is fitted with a keyway (not shown). The upward movement of the valve shaft 70 and the rotor 62 is prevented by contact between the spring 78 and the inside of the can 3.

As shown in FIG. 4, the stator 5 has an insertion hole 4 fitted in the can 3 at the center thereof, and radiates from the periphery of the insertion hole 4 toward the outer peripheral surface of the stator 5. Four locking holding pieces 21, 21,... Protruding outward are provided at predetermined angular intervals (90 degrees). Each of the locking holding pieces 21 is formed integrally with the stator 5, and projects from a peripheral portion of the insertion hole 4 in a direction parallel to a central axis (Z axis) of the stator 5 on a lower end surface 20 of the stator 5. A vertical side portion 21a and a horizontal side portion 21b protruding from the lower end of the vertical side portion 21a toward the outer peripheral surface of the stator 5, and is a substantially L-shaped member having a gap with the stator 5. A relatively shallow spherical crown-shaped retaining recess 21c is provided at a substantially central portion of the lower surface of the side portion 21b. In the present embodiment, one of the locking holding pieces 21 is provided at a position in the same direction as the direction in which the connector 7 projects from the stator 5.

As shown in FIG. 4, the locking member 30 is a single component formed by integrally forming a thin disk-shaped spring material by press working or the like, and has a substrate 30a, and has a central portion of the substrate 30a. The portion is provided with a hole 30b to be fitted into the can 3, and a pair of locking pieces 31, 31 are provided on the outer peripheral portion of the substrate 30a at intervals so as to extend in the same direction and parallel. Each locking piece 31 is connected to the center axis (Z
(Vertical axis) protruding in a direction parallel to the axis, and a horizontal side 31b extending from an upper end of the vertical side 31a in parallel with the substrate 30a.

A fork-shaped holding piece 32 and a tongue-shaped holding piece 33 projecting in a direction parallel to the center axis (Z-axis) of the hole 30b are provided at positions facing the periphery of the hole 30b. 31,3
1 and at a predetermined angular interval (90 degrees)
Are protruded downward from the opposite side of the vertical side 31a. The forked holding piece 32 is provided with the locking piece 31.
And a pair of legs 32a, 32
a, and has a square hole 32b in a substantially central portion of the upper portion. Also, the substrate 30a is relatively fitted with the engaging recess 21c near the base of the bifurcated holding piece 32 on the surface opposite to the side where the bifurcated holding piece 32 protrudes. A shallow spherical crown-shaped locking projection (not shown) is provided.

The engagement between the stator 5 and the locking member 30 is shown in FIG. 5. The holding position of the locking member 30 with respect to the stator 5 is determined by the position of the connector 7 with respect to the fluid inlet / outlet passage 2a. The stopper 30 is provided on the lower end surface 20 of the stator 5 by connecting the pair of locking pieces 31, 31 from the tongue-shaped holding piece 33 side to the locking holding pieces 21, 2 of the lower end face 20.
Insert into 1, ... For example, as shown in FIG.
When selecting a direction that forms 180 degrees with the fluid inlet / outlet passage 2a, the locking pieces 31, 31 of the locking tool 30 are moved from the opposite side to the direction in which the connector 7 is positioned. 21 and 21. That is, each of the locking pieces 31
Is inserted into the gap formed by the lower end surface 20 of the stator 5 and the upper surface of the horizontal side portion 21b of the locking piece 21 in a loosely pressed state, and the inner surface of the vertical side portion 31a of the locking piece 31 is It is inserted until it comes into contact with the side surface of the lateral side portion 21b of the locking holding piece 21. The other two locking holding pieces 21, 21 not locking the locking pieces 31, among the four locking holding pieces 21... Of the stator 5, are located on the lower surface of the side 21 b. Are in contact with the upper surface of the substrate 30a of the locking member 30 (see FIG. 2).

The engagement between the stator 5 and the can 3 is maintained after the stator 5 and the locking member 30 are fitted (see FIG. 5).
This is performed by externally fitting the stator 5 having the insertion hole 4 to the can 3 from the lower end surface 20 thereof. At this time, the forked holding piece 32 of the locking tool 30 is connected to the pair of legs 32a, 32.
a, the outer periphery of the fluid inlet / outlet passage 2a extending from the side surface of the valve body 2 is engaged, and the lower surface of the substrate 30a of the locking member 30 is provided at the lower part of the can 3. The flanged portion 6 is in contact with the upper surface of the flanged portion 6 so as not to be pushed further, and a part of the flanged portion 6 is engaged with the square hole 32 b of the forked holding piece 32 of the locking tool 30. Then, the other part comes into contact with the tongue-shaped holding piece 33 to be pressed and locked.

As described above, the motor-operated valve 1 in which the stator 5 and the can 3 are assembled by the locking member 30 has the fluid inlet / outlet passage 2
The arrangement position of the can 3 and the stator 5 can be changed according to the attachment position in the equipment a. For example, it is desired to arrange the position of the connector 7 at a position 90 degrees with the fluid inlet / outlet passage 2a. In this case, the locking member 30 is provided with the locking pieces 31 and 31 from the direction forming 90 degrees with the connector 7.
Is inserted into the gap formed by the lower end face 20 and the locking holding pieces 21, 21. After the locking tool 30 is fixed to the stator 5, the stator 5 having the insertion hole 4 is moved to the lower end face 2.
By fitting outside from 0 to the can 3, the bifurcated holding piece 32 of the locking tool 30 is engaged with the outer peripheral portion of the fluid inlet / outlet passage 2a, and the stator 5 and the can 3 are held and fixed. ,
The arrangement position of the can 3 and the stator 5 can be changed. Therefore, the motor-operated valve 1 of the present embodiment includes the stator 5
The stator 5 can be selected at four different positions with respect to the can 3 by changing the insertion position of the locking tool 30 with respect to the can 3.

On the upper part of the stator 5, a can cover 9 concentric with the insertion hole 4 (Z axis) is formed integrally with the stator 5, and the can 3 and the insertion hole 4 are externally formed. Not to be exposed. 6 and 7 show another example of the locking member in the motor-operated valve according to the first embodiment. FIG. 6 is an exploded perspective view of the motor-operated valve 1D, and FIG. It is a perspective view of the locking tool 30D used, and has the same structure as that of the example of the first embodiment, except for the locking tool 30D.

The locking member 30D includes a pair of locking pieces 31,
31 have projecting claws 31c, 31c facing each other inward at their distal ends, and when the stator 5 is engaged with the locking member 30D, the inner surface of the vertical side portion 31a of the locking piece 31 is When it comes into contact with the side surface of the horizontal side portion 21b of the locking and holding piece 21, the inner surface of the protruding claw 31c engages with the vertical side portion 21a of the locking and holding piece 21 and serves as a stopper for the locking and holding piece 21. Have. Also, the bifurcated holding piece 32 is
The upper part has a square hole 32b at a substantially central part, and the lower part has a pair of legs 32c, 32c.
As shown in FIG. 7, the space 32d forms a space 32d in which the distances l, m, and n between the legs gradually narrow toward the upper part of the leg, and the space 32d communicates with the square hole 32b at a distance n. ing. When the stator 5 and the can 3 are engaged and held, since the space between the legs 32c and 32c has a space 32d extending toward the lower part thereof, the forked holding piece 32 is easily engaged with the fluid inlet / outlet passage 2a. , And the legs 32c, 3
2c is expanded to elastically engage with the upper semicircular side of the outer peripheral portion of the fluid inlet / outlet passage 2a.
And the fluid inlet / outlet passage 2a can be more easily held in engagement.

8 to 10 show a second embodiment of the electric valve according to the present invention. FIG. 8 is a perspective view of the electric valve 1A, FIG. 9 is an exploded perspective view of the electric valve 1A, FIG. 10 is a partially exploded perspective view of the electric valve 1A. Electric valve 1A
Comprises a valve main body 2A and a bottomed cylindrical can 3 fixed to the valve main body 2A, and a ring-shaped stator 5 having an insertion hole 4 in the center portion is fitted on the can 3. A locking device 30A for preventing rotation and retaining is arranged on the lower end surface of the stator 5, and is basically the same as that of the first embodiment.

As shown in FIG. 9, the lock 30A is
It is a single component formed by integrally forming a thin disk-shaped spring material by pressing or the like, and has a substrate 30a.
A hole 30b to be inserted into the can 3 is provided at the center of the substrate 30. A pair of locking pieces 31, 31 extending in the same direction and parallel at intervals are provided at the outer periphery of the substrate 30a. . Each locking piece 31 is connected to the center axis (Z
(Axis) and a horizontal side 31b extending in parallel with the substrate 30a from the upper end of the vertical side 31a and having an inverted L-shape. Each has a protruding claw 31c facing the inside.

From the periphery of the hole 30b of the substrate 30a,
A tongue-shaped holding piece 34 protruding downward in a direction parallel to the central axis (Z-axis) of the hole 30b extends, and the locking pieces 31 are spaced apart from each other by a predetermined angle (90 degrees). The projection 31 is provided on the side facing the base side. At substantially the center of the lower end of the tongue-shaped holding piece 34, a spherical crown-shaped locking projection 35A is provided.

A plurality of spherical recesses 10, 1 are provided at a predetermined angular interval on the outer peripheral surface of the lower portion of the valve body 2A.
.. Are provided, and the engaging concave portion 10 is fitted with the locking convex portion 35A of the tongue-shaped holding piece 34. As shown in FIG. 10, the fitting between the stator 5 and the locking tool 30A is performed by connecting the locking tool 30A to the pair of locking pieces 31 from the tongue-shaped holding piece 34 side on the lower end surface 20 of the stator 5. 31 are inserted into the locking holding pieces 21, 21,... Of the lower end face 20, which is the same as in the first embodiment.

The engagement between the stator 5 and the can 3 is maintained by moving the stator 5 having the insertion hole 4 downward from above the can 3 after the stator 5 and the latch 30A are fitted (see FIG. 10). While being pushed in, it is fitted to the can 3 from the lower end surface 20 side. At this time, the spherical crown-shaped locking projection 35A of the tongue-shaped holding piece 34 is fitted with any one of the plurality of spherical crown-shaped engaging recesses 10 provided on the side surface of the valve body 2A. It is pressed and locked (see FIG. 8). The relative position of the connector 7 with respect to the fluid inlet / outlet passage 2a can be changed by selecting a fitting position between the spherical crown engaging projection 35A and the spherical crown engaging recess 10.

FIGS. 11 and 12 show a third embodiment of the motor-operated valve according to the present invention.
B is a side view, and FIG. 12 is a partially exploded side view of the electric valve 1B. The motor-operated valve 1B includes a valve body 2B and the valve body 2
B, and a cylindrical can 3 with a bottom fixed to B. A ring-shaped stator 5 having an insertion hole 4 in the center is fitted to the can 3, and a lower end surface of the stator 5 It is the same as the first embodiment in that a stopper 30B for stopping and retaining is arranged.

The stator 5 has an insertion hole 4 at the center thereof, which is fitted to the can 3. The lower end surface 20B of the outer periphery of the connector 7 is provided in a direction parallel to the central axis (Z axis). A projecting retaining piece 24 is provided. The retaining piece 2
4 is formed integrally with the stator 5,
0B, a pair of shaft support pieces 24a, 24a extending in a direction parallel to the central axis (Z axis) of the stator 5;
4a and 24a are provided with locking tool holding shafts 37 supported at both ends.

The locking member 30B is a single component formed by integrally forming a thin plate-like spring material by pressing or the like. As shown in FIG. 15, a board 38 and two legs extending from the board 38 are provided. The base plate 38 includes a pair of arms 38a, 38a, and one arm 39 disposed between the legs 38a, 38a. ing. Each of the legs 38a is bent in a direction opposite to the direction in which the spherical crown-shaped locking projection 35B protrudes in the vicinity of the middle thereof, and the inside of the bent portion is held by the holding shaft 37. The arm 39 is bent in the direction in which the crown-shaped locking projection 35B protrudes in the vicinity of the substrate 38, and is curved in a direction away from the crown-shaped locking projection 35B.

A plurality of engaging recesses 10, 10... Are provided at predetermined angular intervals on the outer peripheral surface of the lower portion of the valve body 2B. A spherical crown-shaped recess fitted into the locking projection 35B is formed. As shown in FIG. 12, in a state before the stator 5 is externally fitted to the can 3, the distal end 40 of the leg 38 a of the locking tool 30 </ b> B
b and is positioned substantially vertically.

The stator 5 having the insertion hole 4 is fitted to the can 3 from its lower end surface 20B, and the arm 39 of the locking member 30B is the flange-like portion which is a fixing portion between the can 3 and the valve body 2B. When it comes into contact with the portion 6, the distal end 40 of the leg portion 38a is released from the engagement with the notch portion 24b of the locking holding piece 24, and the locking tool 30B is rotated about the holding shaft 37 (in this figure, a clock is shown). Direction).

The locking projection 35B of the locking member 30B that has moved in the direction in contact with the valve main body 2B is a part of the plurality of spherical crown-shaped engaging recesses 10 provided on the side surface of the valve main body 2B. Fit with either. The position of the connector 7 with respect to the fluid inlet / outlet passage 2a can be changed by changing the fitting position between the spherical crown engaging projection 35B and the spherical crown engaging recess 10.

As described above, the arm 39 of the locking member 30B is
By being elastically contact-locked to the flange 6 of the can 3,
The spherical crown engaging projection 35B and the spherical crown engaging recess 10 are elastically fitted to each other, and the stator 5 can be firmly held on the can 3. 13 and 14 show a fourth embodiment of the motor-operated valve according to the present invention. FIG. 13 is a side view of the motor-operated valve 1C, and FIG. 14 is a partially exploded side view of the motor-operated valve 1C.
Basically, it is the same as the third embodiment.

The present embodiment is different from the third embodiment in the structure of the base portion of the locking member and the outer peripheral surface of the valve main body in contact with the base portion, and the other structures are the same. . One end of the board 41 of the locking tool 30C has a curved surface,
An irregular shape 42 is formed on the curved surface (see FIG. 16). The lower outer peripheral surface of the valve body 2C has an uneven surface
C is formed, and the uneven shape 10C is
It is fitted with the uneven shape 42 of the substrate 41 of 0C.

When the stator 5 is appropriately rotated with respect to the can 3, the concave-convex shape 42 of the locking member 30 C is fitted with any part of the concave-convex shape 10 C of the valve body 2 C,
The position of the connector 7 with respect to the fluid inlet / outlet passage 2a can be changed. As described above, each of the embodiments of the present invention has the following functions by the above configuration.

The motor-operated valve is designed to reduce the processing cost by simplifying the shape and the like, and has a single retaining member that can be separated from the stator while having a retaining holding piece on the lower surface of the stator. The locking tool is locked on the lower surface of the stator by the locking holding piece, and further the stator is held on the can by the locking tool, and there is no holding portion of the stator on the upper surface of the stator. Of the stator in the vertical and rotational directions can be stopped, and the upper part of the stator can be made smaller.

Further, since the locking member is fixed to the stator by the lower surface of the stator, and the upper portion of the stator is only the upper portion of the can, it is easy to provide a can cover on the stator. In addition, the can and the insertion hole are not exposed to the outside, so that the deterioration of the can and the like can be prevented.

Further, in the motor-operated valve comprising the stator and the can fixed and fixed by the locking member, the stator is locked and fixed in the central axis direction and the circumferential direction of the valve body, and the locking member is inserted into the stator. The position of the valve body and the connector can be changed by changing the position, or by changing the fitting position of the engagement concave portion or the like in the valve body with respect to the locking projection or the like of the locking tool. The rotation of the stator with respect to the valve body and the stopper can be prevented by one component. In particular, the locking tool in the electric valve according to the present invention can be easily integrally formed by pressing a spring material or the like.

[0043]

As can be understood from the above description, in the electric valve according to the present invention, the locking member is fitted and locked in the space on the lower surface of the stator. The valve can be downsized.
In addition, it becomes easy to provide a can cover on the top of the can, and the locking tool and the can are not exposed to the outside, so that the life of the motor-operated valve can be extended. Further, the motor-operated valve of the present invention can change the stator to a desired position with respect to the fluid inlet / outlet passage, so that the motor-operated valve can be easily incorporated into equipment such as an air conditioner.

[Brief description of the drawings]

FIG. 1 is a perspective view of a motor-operated valve according to a first embodiment of the present invention.

FIG. 2 is a side view of the motor-operated valve in FIG.

FIG. 3 is a longitudinal sectional view of the motor-operated valve in FIG. 1;

FIG. 4 is an exploded perspective view of the motor-operated valve in FIG.

FIG. 5 is a partially exploded perspective view of the motor-operated valve in FIG.

FIG. 6 is an exploded perspective view of an embodiment in which a locking device of the electric valve in FIG. 1 is changed.

FIG. 7 is a perspective view of the locking device of FIG. 6;

FIG. 8 is a perspective view of a motor-operated valve according to a second embodiment of the present invention.

9 is an exploded perspective view of the motor-operated valve in FIG.

FIG. 10 is a partially exploded perspective view of the motor-operated valve in FIG.

FIG. 11 is a side view of a motor-operated valve according to a third embodiment of the present invention.

FIG. 12 is a partially exploded side view of the electric valve shown in FIG. 11;

FIG. 13 is a side view of a motor-operated valve according to a fourth embodiment of the present invention.

FIG. 14 is a partially exploded side view of the motor-operated valve in FIG.

FIG. 15 is a perspective view of a lock in the electric valve according to the third embodiment of the present invention.

FIG. 16 is a perspective view of a locking member in a motor-operated valve according to a fourth embodiment of the present invention.

FIG. 17 is an exploded perspective view of a conventional electric valve.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electric valve 1A electric valve 1B electric valve 1C electric valve 1D electric valve 2 valve main body 2A valve main body 2B valve main body 2C valve main body 3 can 5 stator 6 flange-shaped part 21 locking holding piece 24 locking holding piece 30 Locking tool 30A Locking tool 30B Locking tool 30C Locking tool 30D Locking tool

Claims (7)

[Claims] 1. A motor-operated valve comprising: a valve body, a can fixed to the valve body, a stator fitted to the can, and a locking member for the stator. A motor-operated valve, wherein a locking holding piece is formed on a lower surface, the locking tool is held by the locking holding piece, and the stator is locked and held by the locking tool using the locking tool. 2. The locking holding piece comprises a plurality of substantially L-shaped members protruding outward in a radial direction.
A thin plate-shaped substrate, a pair of locking pieces extending in parallel with a gap from the substrate, and a bifurcated holding piece extending in a direction opposite to the locking pieces; 2. The electric motor according to claim 1, wherein the pair of locking pieces are held between the holding piece and the holding piece, and the bifurcated holding piece is engaged with a fluid inlet / outlet passage of the valve body. 3. valve. 3. The pair of locking pieces have projecting claws facing each other inward, and the bifurcated holding piece has a square hole in a substantially central part of an upper part thereof, and a square hole in a lower part thereof. The motor-operated valve according to claim 2, further comprising a pair of legs, wherein a space between the legs of the pair of legs and the square hole communicate with each other. 4. The locking holding piece is composed of a plurality of substantially L-shaped members protruding outward in the radial direction.
A thin plate-shaped substrate, a pair of locking pieces extending in parallel with a gap from the substrate, and a tongue-shaped holding piece extending on the opposite side to the locking piece; The motor-operated valve according to claim 1, wherein the pair of locking pieces are held between the holding pieces, and the tongue-shaped holding pieces are pressed and locked on a peripheral surface of the valve body. 5. The locking holding piece comprises: a pair of shaft support pieces;
A locking tool holding shaft supported by the shaft supporting piece, wherein the locking tool includes a substrate, a pair of bent legs extending from the substrate, and a leg portion between the pair of legs. An arm bent to the opposite side, holding the pair of legs on the holding shaft, locking the arm to a flange-shaped portion that is a joint between the valve body and the can, The motor-operated valve according to claim 1, wherein the substrate is pressed and locked on a peripheral surface of the valve body. 6. A plurality of engagement recesses are formed on a peripheral surface of the valve body, and one engagement protrusion is formed on a substrate of the engagement member. The motor-operated valve according to claim 5, wherein the motor-operated valve is selectively fitted into the mating recess. 7. An uneven shape is formed on a peripheral surface of the valve body, and a substrate of the locking member is curved, and an uneven shape is formed on the curved portion. 6. The motor-operated valve according to claim 5, wherein the uneven shape is selectively fitted.