JP2009236157A - Can and flow rate control valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a can and a flow rate control valve for preventing breakage and the like of an attaching part of a flow rate control valve to a pipe and a valve body, and for facilitating an assembly work of a coil device to the can. <P>SOLUTION: For the can 1 provided with a valve element driving mechanism in it, the coil device 16 is externally fit via a fixing member 17. The can and the flow rate control valve 11 is provided with an inclined groove 3 formed in a bottomed cylinder shape, extended from a close end part side of an outer circumference part 2a of the can toward an open end part side and formed to be shallower toward the open end part side, for guiding a protruding part 17a of the fixing member from the close end part side to the open end part side when the coil device is externally fit to the can and a recessed part 4 for engaging with the protruding part while the protruding part is being guided by the inclined groove or after the protruding part is guided by the inclined groove. The recessed part is provided on the outer circumference part 2a rotated and moved in a vertical surface to an axial line of the can from the inclined groove at a closest part to an open end part side or a closest part to the open end part side on the inclined groove. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flow rate control valve used for controlling the flow rate of a refrigerant in an air conditioner, and a can constituting the flow rate control valve.

  Conventionally, flow rate control valves that open and close a valve using magnetic force or power are widely used for flow rate control of refrigerant in air-conditioning equipment and flow rate control of combustion gas, air, hot water, liquid fuel, etc. in baths and showers. Yes. Examples of this type of flow control valve include an electromagnetic valve described in Patent Document 1.

  FIG. 4 shows an example of a conventional flow rate control valve. The flow rate control valve 50 includes a coil device 51, a can 53 fitted in the coil device 51, and a valve body 54 fixed to the lower end portion of the can 53. Etc.

  The coil device 51 includes a stopper 52 made of an elastic material, and the convex portion 52 a of the stopper 52 engages with the concave portion 53 a of the can 53. The coil device 51 incorporates a coil, a bobbin and a yoke when used for an electromagnetic valve, and incorporates a stator, a coil and a bobbin when used for an electric valve, and is molded with resin in any case. The

  The can 53 has four concave portions 53 a arranged at equal intervals on the outer peripheral portion, and the concave portions 53 a engage with the convex portions 52 a of the stopper 52. The can 53 has a built-in plunger, and opens and closes the valve opening via a valve body, which will be described later, when the plunger is moved by the electromagnetic force of the coil device 51.

  The valve body 54 is fixed to the lower end portion of the can 53, and is connected to an inlet side pipe 55 and an outlet side pipe 56, and includes a valve chamber, a valve port, a valve body, and the like inside. The inlet side pipe 55 and the outlet side pipe 56 are brazed (brazed portion 58) to a pipe 57 of an air conditioner unit, for example.

  Next, a method for assembling the coil device 51 to the can 53 will be described. The valve body 54 is fixed to the lower end of the can 53, the inlet side pipe 55 and the outlet side pipe 56 connected to the valve body 54 are brazed to the pipe 57, and then the coil device 51 is assembled from above the can 53. Here, as shown in FIG. 5 (a), the convex portion 52a of the stopper 52 is strongly pressed against the can 53, so that the coil device 51 is moved while elastically deforming the stopper 52 as shown in FIG. 5 (b). As shown in FIG. 5C, the convex portion 52a is engaged with the concave portion 53a of the can 53, and the assembly of the coil device 51 to the can 53 is completed.

JP 2006-189109 A

  However, in the conventional flow control valve 50, when the coil device 51 is assembled to the can 53, the convex portion 52 a of the stopper 52 is strongly pressed against the can 53. Also, a load in the direction of the arrow as shown in FIG. 4 is applied. As a result, the brazed portion 58 and the piping 57 are damaged, the stopper 52 is plastically deformed to lose elasticity, and the thin valve body 54 is damaged.

  Further, as described above, when the operator attaches the coil device 51 to the can 53, the coil device 51 is brought to a predetermined position with respect to the can 53 while the convex portion 52 a of the stopper 52 is strongly pressed against the can 53. It was not easy to push in, and the work sometimes took a long time.

  Therefore, the present invention has been made in view of the problems in the above-described conventional technology, and can reliably prevent breakage of each part and loss of elasticity, and can easily perform assembly work, And it aims at providing the flow control valve provided with this can.

  In order to achieve the above object, the present invention provides a can in which a coil device as a component of a flow control valve is externally fitted through an elastic fixing member and has a built-in valve body drive mechanism. Is formed in a bottomed cylindrical shape, extends from the closed end side to the open end side of the outer periphery of the can, and is formed shallower toward the open end side. An inclined groove that guides the convex portion of the fixing member from the closed end side toward the open end side when the coil device is externally fitted to the coil device, and the convex portion being guided by the inclined groove Or, after the convex portion is guided by the inclined groove, the concave portion engages with the convex portion.

  According to the present invention, when the coil device is externally fitted to the can, the convex portion of the fixing member is guided by the inclined groove formed on the can, or after the guidance, the convex portion is engaged with the concave portion of the can. Therefore, it is not necessary to press the convex part of the fixing member (corresponding to the stopper) strongly against the can as in the prior art, and the load applied to the flow control valve can be reduced, causing damage to each part. While being able to prevent reliably, an assembly | attachment operation | work can be performed easily.

  In the can, the concave portion can be provided closest to the open end portion on the inclined groove. Thereby, the convex part of the fixing member can be engaged with the concave part of the can while guiding the convex part of the fixing member by the inclined groove formed in the can.

  In the can, the concave portion can be provided on an outer peripheral portion that is rotationally moved in a plane perpendicular to the axial direction of the can from the position closest to the open end on the inclined groove. Thus, after the convex portion of the fixing member is guided by the inclined groove formed in the can, the coil device can be rotated with respect to the can and the convex portion of the fixing member can be engaged with the concave portion of the can. When the coil device is rotated with respect to the can, a strong force is not required, so that the coil member can be easily assembled to the can.

  Further, the present invention provides a valve body having a valve body and a valve port communicating with the valve chamber, a valve body for opening and closing the valve port, a can fixed to the valve body and incorporating a valve body drive mechanism, A coil device that is externally fitted to the can through an elastic fixing member, and the valve body is driven by the electromagnetic force of the coil device to open and close the valve port through the valve body. Or the flow control valve for adjusting the opening of the valve port, wherein the can is formed in a bottomed cylindrical shape, and is directed from the closed end side to the open end side of the outer periphery of the can. When the coil device is externally fitted to the can, the convex portion of the fixing member is moved from the closed end side to the open end side when extending toward the open end side. An inclined groove that is directed toward the head, and a state in which the convex portion is guided by the inclined groove, and After the convex portion is guided by the inclined groove, and wherein it comprises a recess for engagement with the convex portion.

  And according to this invention, it is not necessary to press the convex part of a fixing member strongly to a can like the said invention, The damage of each part is prevented reliably and an assembly | attachment operation | work can be performed easily.

  In the flow rate control valve, the concave portion can be provided at a position closest to the open end portion on the inclined groove, and the concave portion can be arranged from the position closest to the open end portion on the inclined groove. It can also be provided on the outer periphery rotated in a plane perpendicular to the direction.

  As described above, according to the present invention, the attachment portion of the flow control valve to the pipe and the valve main body are prevented from being damaged, the fixing member is prevented from being deformed, and the coil device can be easily assembled to the can. The can and flow control valve can be provided.

  Next, an embodiment in which the present invention is applied to a solenoid valve will be described with reference to the drawings.

  FIG. 1 shows an embodiment of a can according to the present invention. The can 1 is composed of a main body 2 formed in a bottomed cylindrical shape and an upper end 2b side of an outer peripheral portion 2a of the main body 2 facing downward. An inclined groove 3 that extends and guides a convex portion 17a of a stopper (fixing member) 17 described later downward, and a concave portion 4 that engages with the convex portion 17a after the convex portion 17a is guided by the inclined groove 3; Is provided. Inside the main body 2, valve body drive mechanisms such as a plunger and a suction element are arranged.

  As shown in FIG. 1C, the inclined grooves 3 are arranged at two locations on the front side and the back side of the main body 2, and the lower bottom portion 3 b is shallower than the upper bottom portion 3 a on the upper end portion 2 b side of the main body 2. Formed. Two recesses 4 are arranged at opposite positions on the left and right side surfaces of the main body 2, and a lower end 4 a of the recess 4 and a lower end 3 c of the inclined groove 3 are surfaces S perpendicular to the axis of the can 1. It exists above or in the vicinity of the surface S.

  FIG. 2 shows a flow control valve provided with the can 1. The flow control valve 11 is roughly divided into a can 1, a valve main body 12 fixed to the lower end of the can 1, and a valve main body 12. An inlet side pipe 13 and an outlet side pipe 14, a pipe (not shown) such as an air conditioner unit connected to each of the pipes 13 and 14, and a coil device 16 fixed to the can 1 via a stopper 17. Prepare. The stopper 17 is made of spring steel and includes a convex portion 17 a that engages with the concave portion 4 formed in the main body 2 of the can 1.

  Next, a method for assembling the coil device 16 to the can 1 will be described with reference to FIGS.

  As shown in FIG. 2 (a), the valve body 12 is fixed to the lower end of the can 1, and the free ends of the inlet side pipe 13 and the outlet side pipe 14 connected to the valve body 12 are unit pipes (not shown). After brazing, the coil device 16 is assembled from above the can 1.

  Here, as shown in FIG. 3A, the coil device 16 is moved downward while the convex portion 17 a of the stopper 17 is inserted into the inclined groove 3 of the can 1. By this inclined groove 3, the convex portion 17a can be easily guided downward, and it is not necessary to strongly press the convex portion 17a against the can 1. Therefore, the load on the entire can 1 and the flow control valve 11 can be reduced. it can.

  Then, as shown in FIG. 3 (b), after the convex portion 17a is moved to the lowermost part of the inclined groove 3, the coil device 16 is rotated by 90 ° relative to the can 1 to obtain FIG. 3 (c). As shown, the protrusion 17a of the stopper 17 and the recess 4 of the can 1 are engaged to complete the assembly. Since this relative rotation can be performed with a low torque, the operator can easily perform the assembly work with one hand, and the load on the entire can 1 and the flow control valve 11 can be minimized. Can do.

  In the present embodiment, the inclined grooves 3 of the can 1 are arranged at two locations on the front side and the rear side of the main body 2, and the concave portions 4 are arranged at two opposing positions on the left and right side surfaces of the main body 2. Without being limited to such a configuration, the number of the inclined grooves 3, the number of the recessed portions 4, and the positional relationship between the inclined grooves 3 and the recessed portions 4 can be variously changed.

  In the present embodiment, the recess 4 of the can 1 is disposed at a position separated from the inclined groove 3, but the recess 4 may be provided at the lowermost part of the inclined groove 3. Thereby, when assembling the coil apparatus 16 to the can 1, the process of rotating both relatively can be omitted, and assembling can be performed more easily.

It is a figure which shows one Embodiment of the can concerning this invention, Comprising: (a) is a front view, (b) is a side view, (c) is a top view. It is a figure which shows one Embodiment of the flow control valve concerning this invention, Comprising: (a) shows the state before attaching a coil apparatus to a can, (b) shows the state after an assembly | attachment. It is the A section enlarged view of the flow control valve shown in FIG.2 (b). It is a whole schematic diagram showing an example of the conventional flow control valve. It is the B section enlarged view of the flow control valve shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Can 2 Main body 2a Outer peripheral part 2b Upper end part 3 Inclined groove 3a Upper bottom part 3b Lower bottom part 3c Lower end part 4 Recessed part 4a Lower end part 11 Flow control valve 12 Valve main body 13 Inlet side piping 14 Outlet side piping 16 Coil device 17 Stopper 17a Convex part

Claims (6)

A coil device as a component part of the flow control valve is fitted through an elastic fixing member, and has a built-in valve body drive mechanism,
The can is formed in a bottomed cylindrical shape,
The outer periphery of the can is extended from the closed end side toward the open end side and formed shallower toward the open end side, and when the coil device is externally fitted to the can, An inclined groove for guiding the convex portion of the fixing member from the closed end side toward the open end side;
A can comprising: a concave portion engaged with the convex portion in a state where the convex portion is guided by the inclined groove or after the convex portion is guided by the inclined groove.   The can according to claim 1, wherein the concave portion is provided closest to the open end portion on the inclined groove.   2. The concave portion is provided on an outer peripheral portion that is rotationally moved in a plane perpendicular to the axial direction of the can from the position closest to the open end portion on the inclined groove. Can of description. A valve body having a valve chamber and a valve port communicating with the valve chamber, a valve body for opening and closing the valve port, a can fixed to the valve body and incorporating a valve body drive mechanism, and the can having elasticity A coil device that is externally fitted through a fixing member, and driving the valve body drive mechanism by electromagnetic force of the coil device, thereby opening or closing the valve port through the valve body or the valve port A flow control valve for adjusting the opening of
The can is formed in a bottomed cylindrical shape,
The outer periphery of the can is extended from the closed end side toward the open end side and formed shallower toward the open end side, and when the coil device is externally fitted to the can, An inclined groove for guiding the convex portion of the fixing member from the closed end side toward the open end side;
A flow rate control valve comprising: a concave portion engaged with the convex portion in a state where the convex portion is guided by the inclined groove or after the convex portion is guided by the inclined groove.   The flow rate control valve according to claim 4, wherein the concave portion is provided at a position closest to the open end side on the inclined groove.   The said recessed part is provided on the outer peripheral part rotated and moved within the surface perpendicular | vertical with respect to the axial direction of the said can from the position nearest the open end part side on the said inclination groove | channel. The flow control valve described.

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