CN102644782A - Valve casing for control valve and manufacturing method of the same - Google Patents

Abstract

The present invention relates to a valve casing for a control valve and a method for manufacturing the valve casing for the control valve. To provide a valve casing for a control valve, which does not require machining of flow passages, seal grooves, joints, valve chambers, valve seats, etc., which have complex structures, as in conventional cast aluminum control valve bodies. Moreover, there is no need for surface processing, sealing, etc., and the airtightness is excellent, and it will not deteriorate due to changes over time. It also has excellent heat resistance and corrosion resistance. cost. The valve housing for the control valve includes a valve housing unit formed by joining piping members constituting a flow path and the valve housing to each other, and a molded main body formed by integrally molding the periphery of the valve housing unit with a molding material.

Description

Valve housing for control valve and manufacturing method of valve housing for control valve

technical field

The present invention relates to, for example, a valve case for a control valve used for a switching valve such as a two-way valve and a three-way valve used in a vehicle air conditioner such as an automobile air conditioner, a control valve such as an on-off valve, and a flow control valve, and a valve for a control valve Shell manufacturing method.

Background technique

Conventionally, control valves used in vehicle air-conditioning devices such as such automobile air conditioners are described in Patent Document 1 (Japanese Patent Laid-Open No. 11-118059 ), Patent Document 2 (Japanese Patent Laid-Open No. 11-351440 ), etc. , in order to reduce fuel consumption and achieve weight reduction, the valve body for the control valve, for example, has more valve bodies made of cast aluminum made of aluminum.

8 to 9 are schematic cross-sectional views showing such a conventional valve body 200 for a control valve and a method of manufacturing a control valve 300 using the valve body 200 for a control valve.

First, as shown in FIG. 8 , for example, a die-cast body 202 is manufactured by casting aluminum by a casting method.

Then, as shown in FIG. 8 , the first flow channel 204 and its seal groove portion 206 and joint portion 208 , the second flow channel 210 and its seal groove portion 212 and joint portion 214 are produced by cutting the die casting body 202 , And the valve chamber 216 and the valve seat 218 and the control part connecting part 220 and the like.

Then, as shown in FIG. 9 , the control valve 300 is assembled by attaching the control unit 304 including the valve body 302 of the control valve 300 to the valve main body 200 for the control valve manufactured in this way.

That is, the control unit 304 of the control valve 300 includes, for example, a molded coil 308 through which the drive unit 306 passes, as shown in FIG. 9 .

The molded coil 308 is molded from a bobbin 312 around which a winding is wound and a molding resin 324 surrounding the bobbin 312 . Furthermore, as shown in FIG. 9 , the molded coil 308 is assembled inside the magnetic frame 310 and is fixed to the drive unit 306 via the magnetic frame 310 .

That is, the driving unit 306 passes through the driving unit through hole 322 formed in the central portion of the bottom plate portion 320 of the magnetic frame 310 and the driving unit through hole 326 of the bobbin 312 .

Furthermore, the fastening bolt 332 formed on the upper portion of the attractor 330 of the driving unit 306 passes through the bolt through hole 318 formed in the center of the upper plate portion 314 of the magnetic frame 310 , and is screwed to the fastening nut 328 .

As a result, the molded coil 308 is passed through the drive unit 306 and fixed to form the control unit 304 of the control valve 300 .

Further, the drive unit 306 includes a plunger case 334 , and a plunger 336 to which the valve body 302 is fixed, and the plunger 336 is movable up and down in the plunger case 334 . Furthermore, an urging spring 338 for urging the plunger 336 downward, ie, urging the valve body 302 toward the valve seat 218 , is installed between the attractor 330 and the plunger 336 .

Furthermore, a cover member 340 is fixed to the outer periphery of the lower end of the plunger housing 334 .

In order to assemble the control unit 304 configured in this way on the valve main body 200 for a control valve, as shown in FIG. A spring 338 and a plunger 336 on which the valve body 302 is fixed.

In addition, a seal member 242 such as an O-ring is fitted into the control unit connection portion 220, the cover member 340 is inserted into the control unit connection portion 220, and the control unit 304 is assembled by caulking the upper end portion 220a of the control unit connection portion 220. The control valve 300 is assembled to the valve main body 200 for a control valve.

prior art literature

Patent Document 1: Japanese Patent Application Laid-Open No. 11-118059

Patent Document 2: Japanese Patent Application Laid-Open No. 11-351440

Patent Document 3: Japanese Patent Laid-Open No. 2001-235259

However, in such a conventional method of manufacturing the valve body 200 for a control valve made of cast aluminum, first, a casting process of casting aluminum by a casting method to manufacture the die-cast body 202 is required.

Furthermore, as shown in FIG. 8 , on the die-cast body 202 produced by this casting process, the first flow path 204 and its seal groove portion 206 , and the joint portion 208 including the joint abutting surface 222 need to be connected to the second flow path. The channel 210 and its sealing groove portion 212 , the joint portion 214 including the joint abutting surface 224 , the valve chamber 216 , the valve seat 218 , and the control portion connecting portion 220 are cut.

Therefore, since it is necessary to manufacture such a complex-structured flow path etc. by cutting, a very complicated and precise cutting process is required.

As a result, a casting process and a complicated cutting process are required, and there are problems in that the processing time is very long and the manufacturing cost is very high.

In addition, after the cutting process, in order to improve the corrosion resistance of the valve body 200 for a control valve, it is generally necessary to perform surface processing such as aluminum surface passivation treatment.

In addition, the valve body 200 for a control valve made of cast aluminum has so-called "air holes" because it is a casting, and the valve body 200 for a control valve requiring airtightness needs to be separately sealed.

Therefore, there are problems that such surface processing, sealing processing, and the like need to be performed, the processing time becomes longer, and the manufacturing cost is further increased.

In Patent Document 1 and the like, it is proposed to form the die-cast body 202 with resin, but the resin has disadvantages in terms of reliability, such as flow passages and the like deteriorating over time, causing cracks and the like.

In addition, in Patent Document 3 (Japanese Unexamined Patent Publication No. 2001-235259), an expansion valve 400 is disclosed in which, as shown in FIG. The half shell 406 covers, and the main body block 408 constituting the pressure vessel on the outside thereof is integrally formed by insert molding resin molding.

However, the purpose of this expansion valve 400 is to reduce the number of parts constituting the pressure vessel and provide an expansion valve that does not require sealing members. Therefore, the main body block 408 constituting the pressure vessel outside the valve unit 402 is formed only by resin molding, thereby eliminating the need for sealing members such as O-rings, which are the main cause of refrigerant leakage to the outside, and the pressure vessel is a resin molded product. The pressure vessel is composed of a single resin molded part, which can reduce the number of parts.

Therefore, in this case, it can be seen from FIG. 10 that the first half shell 404 and the second half shell 406 are strictly speaking the shells used to cover the valve unit 402 with the valve body function, rather than the shells used to cover the flow passage. , In addition, the materials of the first half shell 404 and the second half shell 406 are disclosed, and the material of the main body block 408 is only disclosed as resin.

In addition, after the valve unit 402 is covered by the first half case 404 and the second half case 406, the main body block 408 is integrally formed by insert-molding resin, so the valve unit 402 cannot be assembled and disassembled after all.

Therefore, in the case of this patent document 3, when it is applied to a control valve used in a vehicle air conditioner such as an automobile air conditioner, the part not covered by the first half case 404 and the second half case 406 is due to The material of the resin of the main body block 408 may be deteriorated due to changes over time, such as a flow path, and is defective in terms of reliability.

In addition, depending on the materials of the first half case 404 and the second half case 406 , there are also cases where flow passages and the like are deteriorated due to changes over time in this portion, which is disadvantageous in terms of reliability.

Contents of the invention

The present invention is a technical solution proposed in view of this situation, and its purpose is to provide a control valve body that does not require complicated structures such as flow passages, sealing grooves, joints, valves, etc. Chambers, valve seats, etc. are cut, and surface processing, sealing, etc. are not required. The airtightness is excellent, and it will not deteriorate due to changes over time. The reliability is also excellent, and the processing can be reduced with a simple process. A valve housing for a control valve and a manufacturing method for a valve housing for a control valve that save time and reduce manufacturing costs.

The present invention was made to achieve the above-mentioned problems and objects of the prior art. The control valve housing of the present invention is characterized in that it includes: a valve housing formed by joining a piping member constituting a flow path and a valve housing to each other. a unit; and a molded body portion formed by integrally molding the periphery of the above-mentioned valve housing unit with a molding material.

In addition, the manufacturing method of the control valve housing of the present invention is characterized in that the valve housing unit is formed by joining the piping member constituting the flow path and the valve housing to each other, and the periphery of the valve housing unit is integrally molded with a molding material. A valve casing for a control valve is formed.

With such a configuration, since the valve case unit formed by joining the piping members constituting the flow passage, the control part that accommodates the valve body of the control valve, and the valve case of the control valve, etc. Like the valve main body of the control valve made by the manufacturer, it is necessary to cut the flow passages, seal grooves, joints, valve chambers, valve seats, etc. with complex structures, and the flow passages with complex structures can be easily formed.

Furthermore, since such a valve casing unit is used, it is not necessary to perform surface treatment, sealing treatment, etc. conventionally, and the airtightness is excellent.

Therefore, compared with the conventional valve main body for a control valve made of cast aluminum, it is possible to greatly reduce the processing time and reduce the manufacturing cost with a simple process.

In addition, if such a valve case unit is made of metal, resin, etc., which are excellent in heat resistance and corrosion resistance, it will not deteriorate due to changes over time, and the reliability is also excellent, and the processing can be greatly reduced with a simple process. time and reduce manufacturing costs.

In addition, since such a valve housing unit is used, the valve housing for the control valve can function as a storage body, and the control unit of the control valve can be easily assembled and disassembled.

In addition, in the valve housing for a control valve according to the present invention, the valve housing unit is made of resin, and a molding material constituting the molded main body is resin.

In this case, by appropriately selecting the material of these resins according to the environment in which they are used, for example, in a use environment that requires heat resistance and corrosion resistance, use a fluororesin that is excellent in heat resistance and corrosion resistance, etc. By producing the resin constituting the valve case unit including the piping member and the valve case, it is possible to provide a valve case for a control valve that does not deteriorate over time and is also excellent in reliability.

Furthermore, since the valve casing unit is made of resin, and the molding material constituting the molded main body is resin, weight reduction can be achieved.

In addition, the control valve housing of the present invention is characterized in that all or at least one of the piping member and the valve housing constituting the valve housing unit is made of metal, and the molding material constituting the molded main body is resin.

In this case, by appropriately selecting the material of these metals according to the environment in which it is used, for example, in an environment where corrosion resistance is required, by making the valve including the piping parts and the valve case from stainless steel with excellent corrosion resistance The shell unit is made of metal, so that it can be used even under high fluid pressure, and it does not deteriorate due to aging and has excellent reliability.

Furthermore, since the molding material constituting the molded main body is resin, weight reduction can be achieved.

In addition, the control valve housing of the present invention is characterized in that all or at least one of the piping member and the valve housing constituting the valve housing unit is made of metal, and the molding material constituting the molded main body is metal.

In this case, since the valve case unit including the piping parts and the valve case is made of metal, it can be used even under high fluid pressure as above, and it can be used without deterioration due to aging and reliability. Also excellent control valve housing.

Furthermore, since the valve housing unit is made of metal, and the molding material constituting the molded main body is metal, it has rigidity and excellent mechanical strength.

In addition, the control valve housing of the present invention is characterized in that all or at least one of the piping member and the valve housing constituting the valve housing unit is produced by metal stamping.

In this way, since the parts constituting the valve housing unit are produced by metal stamping, it is not necessary to cut the flow passages, seal grooves, joints, valve chambers, valve seats, etc. with complicated structures, and can be formed easily and at low cost. Runners with complex structures, etc.

In addition, the valve housing for a control valve according to the present invention is characterized in that it includes a molded body part integrally molded around the valve housing unit with a molding material, and has an external joint fitting end surface at the front end of the joint part of the valve housing unit. , the molded main body portion is formed in a block shape having a plane parallel to the end face of the external joint fitting portion.

By adopting such a block-shaped control valve housing, the abutment surface when connecting the joint (flange joint, etc.) of the piping on the counterpart side (system side) becomes a flat surface, and it is possible to prevent the inclination of the joint on the counterpart side. Or gaps, which can ensure a stable surface where there is no risk of fluid, etc. leaking from the joints.

In addition, the valve housing for a control valve according to the present invention is characterized in that a control unit including a valve body of the control valve is mounted on the valve housing to form a valve body for a control valve.

In addition, the valve case for a control valve according to the present invention is characterized in that the control valve is housed in the valve case to form a housing body for the control valve.

In this way, the valve housing for the control valve can function as the valve main body for the control valve or the housing body of the control valve. .

The effects of the present invention are as follows.

According to the present invention, since the valve case unit formed by joining the piping members constituting the flow path and the control part containing the valve body of the control valve, the valve case of the control valve, etc. Like the valve main body of the control valve made by the manufacturer, it is necessary to cut the flow passages, seal grooves, joints, valve chambers, valve seats, etc. with complex structures, and the flow passages with complex structures can be easily formed.

Furthermore, since such a valve casing unit is used, it is not necessary to perform surface treatment, sealing treatment, etc. conventionally, and the airtightness is excellent.

Therefore, compared with the conventional valve main body for a control valve made of cast aluminum, it is possible to greatly reduce the processing time and reduce the manufacturing cost with a simple process.

In addition, if such a valve case unit is made of metal, resin, etc., which are excellent in heat resistance and corrosion resistance, it will not deteriorate due to changes over time, and the reliability is also excellent, and the processing can be greatly reduced with a simple process. time and reduce manufacturing costs.

In addition, since such a valve housing unit is used, the valve housing for the control valve can function as a receiving body, and the control unit of the control valve or the control valve can be easily assembled and disassembled.

Description of drawings

FIG. 1 is a schematic cross-sectional view showing a valve housing unit of a valve housing for a control valve according to the present invention and a manufacturing method thereof.

2 is a schematic cross-sectional view showing a valve housing for a control valve according to the present invention and a method of manufacturing the valve housing for a control valve in which the periphery of the valve housing unit in FIG.

FIG. 3 is a schematic cross-sectional view showing a control valve 42 in which a control unit 46 is mounted on the control valve main body of FIG. 2 .

4 is a schematic cross-sectional view showing an embodiment of a valve housing for a control valve and a control valve unit using the valve housing for a control valve according to the present invention, constituting a container for a control valve.

Fig. 5 is a schematic sectional view showing the control valve shown in Fig. 4 .

6 is a schematic cross-sectional view showing another embodiment of the valve casing for a control valve of the present invention constituting the valve body for a control valve and its manufacturing method.

7 is a schematic cross-sectional view showing a control valve in which a control unit is mounted on the valve body for the control valve of FIG. 6 .

8 is a schematic cross-sectional view showing a conventional valve body for a control valve and a method of manufacturing the same.

9 is a schematic cross-sectional view showing a control valve in which a control unit is mounted on the valve body for the control valve of FIG. 8 .

Fig. 10 is a schematic sectional view showing a conventional control valve.

In the picture:

10-Valve body for control valve (casing for control valve), 12-First flow path, 14-Seal groove, 16-Joint part, 16a-End surface of external joint assembly part, 18-First piping member, 20-No. Second runner, 22-seal groove, 24-joint, 24a-end face of external joint assembly, 26-second piping component, 28-valve chamber, 30-connecting part of control part, 30a-upper end, 32-valve Shell, 34, 36-Joint part, 38-Valve housing unit, 40-Molded main body part, 40a, 40b-Joint contact surface, 42-Control valve, 44-Valve body, 46-Control part, 48-Drive part , 50-molded coil, 52-coil bobbin, 54-magnetic frame, 56-upper plate, 58-bolt through hole, 60-bottom plate, 62, 66-drive part through hole, 64-molded resin, 68 -Connecting nut, 70-Attractor, 72-Connecting bolt, 74-Plunger housing, 76-Plunger, 78-Valve seat, 80-Actuator spring, 82-Cover part, 84, 88, 92-Sealing part , 86-Piping joint for the first flow path, 90-Piping joint for the second flow path, 94-Retractable body for control valve, 96-Control valve, 98-First flow path, 100, 108, 116, 124-Sealing groove Part, 102, 110, 118, 126-joint part, 102a, 110a, 118a, 126a-end surface of external joint assembly part, 104-first piping part, 106-second flow path, 112-second piping part, 114- The third flow channel, 120-the third piping component, 122-the fourth flow channel, 128-the fourth piping component, 130-control valve retractable chamber, 132-valve housing, 134-C-type retaining ring, 136-retaining ring Mounting parts, 138, 140, 142, 144-Joint part, 146-Control valve unit, 148-Sealing part, 200-Valve body for control valve, 202-Die casting body, 204-First flow path, 206, 212-Seal Groove, 208, 214-joint part, 210-second flow channel, 216-valve chamber, 218-valve seat, 220-connecting part of control part, 220a-upper end, 222, 224-joint contact surface, 242- Sealing parts, 300-control valve, 302-valve body, 304-control part, 306-drive part, 308-molded coil, 310-magnetic frame, 312-coil bobbin, 314-upper plate, 318-bolt through hole , 320-base plate, 322, 326-drive part through hole, 324-molding resin, 328-connecting nut, 330-attractor, 332-connecting bolt, 334-plunger housing, 336-plunger, 338- Energizing spring, 340-cover member, 400-expansion valve, 402-valve unit, 404-first half case, 406-second half case, 408-body block (body block).

Detailed ways

Embodiments (examples) of the present invention will be described in more detail below based on the drawings.

Example 1

1 to 3 are schematic cross-sectional views showing a valve body for a control valve using the valve casing for a control valve of the present invention as a body of the control valve and a method of manufacturing a control valve using the same.

Hereinafter, the valve main body 10 for control valves of this invention, and the manufacturing method of the control valve using this valve main body 10 for control valves are demonstrated based on FIGS. 1-3.

First, as shown in FIG. 1 , the first pipe member 18 composed of the first flow path 12 , the seal groove portion 14 and the joint portion 16 is fabricated. In addition, the second piping member 26 composed of the second flow path 20 , its seal groove portion 22 , and the joint portion 24 is produced. Furthermore, the valve case 32 which consists of the valve chamber 28, the control part connection part 30, etc. is produced. In addition, flange-shaped outer joint mounting part end surfaces 16a, 24a are formed at the front ends of the joint part 16 and the joint part 24, respectively.

Then, the first piping member 18 and the valve housing 32 are joined to each other by the joining portion 34 , and the second piping member 26 and the valve housing 32 are joined to each other by the joining portion 36 , thereby constituting the valve housing unit 38 .

Next, as shown in FIG. 2 , the molded main body 40 is formed by integrally molding the periphery of the valve housing unit 38 with a molding material, and the valve main body 10 for a control valve in which the valve housing unit 38 and the molded main body 40 are integrated is manufactured. .

Further, the molded main body portion 40 is formed in a block shape having a plane parallel to the external joint fitting portion end faces 16a, 24a.

In this case, the valve housing unit 38, that is, the first piping member 18, the second piping member 26, and the valve housing 32 are made of resin, and the molding material constituting the molded main body 40 may be resin.

In this case, by appropriately selecting the material of these resins according to the environment in which they are used, for example, in a use environment that requires heat resistance and corrosion resistance, use a resin with excellent heat resistance and corrosion resistance, such as PTFE resin Fluorine resin such as PFA resin, etc. are used to make the resin constituting the valve housing unit 38, which includes the first piping member 18, the second piping member 26, and the valve housing 32, thereby providing a Furthermore, the valve main body 10 for a control valve is also excellent in reliability.

Furthermore, since the valve housing unit 38 is made of resin, and the molding material constituting the molded main body portion 40 is also resin, weight reduction can be achieved.

In addition, in this case, the first piping member 18, the second piping member 26, and the valve case 32 may be made of the same resin or may be made of different resins.

All or at least one of the first piping member 18, the second piping member 26, and the valve housing 32 constituting the valve case unit 38 is made of metal, and the molding material constituting the molded main body 40 may be resin.

In this case, by appropriately selecting the material of these metals according to the environment in which they are used, for example, in a use environment that requires heat resistance and corrosion resistance, by making the valve with excellent corrosion resistance, such as stainless steel, etc. The metal of the shell unit 38, which includes the first piping part 18, the second piping part 26, and the valve housing 32, can be used even under high fluid pressure, and will not change over time. The valve body 10 for a control valve is excellent in deterioration and reliability.

Furthermore, since the molding material constituting the molded main body portion 40 is resin, weight reduction can be achieved.

In this case, the first piping member 18, the second piping member 26, and the valve housing 32 are preferably made of the same metal because galvanic corrosion does not occur, but they may be made of different metals.

In addition, all or at least one of the first piping member 18, the second piping member 26, and the valve housing 32 constituting the valve case unit 38 is made of metal, and the molding material constituting the molded main body portion 40 may be metal.

In this case, by appropriately selecting these metal materials according to the environment in which they are used, for example, in an environment where heat resistance and corrosion resistance are required, the valve casing is made of a material with excellent corrosion resistance, such as stainless steel, etc. The metal of the unit 38, the valve casing unit 38 is composed of the first piping part 18, the second piping part 26 and the valve casing 32, thus, it can be used even under high fluid pressure, and it will not change over time. The valve main body 10 for a control valve is deteriorated and has excellent reliability.

Furthermore, the valve case unit 38 is made of metal, and the molding material constituting the molded main body portion 40 is also metal, so it has rigidity and excellent mechanical strength.

In addition, in this case, the metal constituting the valve housing unit 38 including the first piping member 18, the second piping member 26, and the valve housing 32 and the metal constituting the molding material for molding the main body portion 40 may be appropriate depending on the use environment and the like. For example, stainless steel, copper-based metals, aluminum alloys, etc. may be selected, and there is no particular limitation. However, it is preferable to be made of the same metal because galvanic corrosion does not occur, but it may be made of a different metal.

In this case, the first piping member 18, the second piping member 26, and the valve housing 32 are preferably made of the same metal because galvanic corrosion does not occur, but they may be made of different metals.

In addition, it is preferable that all or at least one of the first piping member 18, the second piping member 26, and the valve housing 32 constituting the valve case unit 38 is produced by metal stamping.

In this way, the valve housing unit 38 is composed of the first piping member 18, the second piping member 26, and the valve housing 32 produced by metal stamping, so it is not necessary to perform complicated flow passages, seal grooves, and joints as in the past. , valve chamber, valve seat, etc. can be cut and processed, and complex flow channels can be formed easily and at low cost.

In addition, in this case, the method of joining the first piping member 18 and the valve case 32 with the joining portion 34 and the method of joining the second piping member 26 and the valve case 32 with the joining portion 36 are not particularly limited. For example, known joining methods such as welding, brazing, welding, bonding, and pressure welding are used.

Furthermore, as a method of forming the molded main body portion 40 by integrally molding the periphery of the valve housing unit 38 with a molding material to manufacture the valve body 10 for a control valve in which the valve housing unit 38 and the molded main body portion 40 are integrated, It is not particularly limited, and injection molding (molding), such as conventionally known integral molding, insert molding, and potting, is also included.

The above-mentioned resin is not particularly limited, and depending on the use environment, for example, polyphenylene sulfide resin (PPS) excellent in heat resistance, chemical resistance, and precision moldability, fluororesin, etc. can be used.

In addition, when the first piping member 18, the second piping member 26, and the valve case 32 are each made of metal, as described above, in addition to metal stamping, conventionally known metal molding such as extrusion and drawing can also be used. processing method to manufacture.

An example of a method of manufacturing the control valve 42 using the valve body 10 for a control valve configured in this way will be described based on FIG. 3 .

That is, as shown in FIG. 3 , the control valve 42 is assembled by attaching the solenoid valve type control unit 46 including the valve body 44 of the control valve 42 to the control valve main body 10 manufactured in this way.

That is, as shown in FIG. 3 , the control unit 46 of the control valve 42 includes a molded coil 50 through which the driving unit 48 passes.

Furthermore, the molded coil 50 is molded from a bobbin 52 around which a winding is wound and a molding resin 64 surrounding the bobbin 52 . Furthermore, as shown in FIG. 3 , the molded coil 50 is assembled inside a magnetic frame 54 and is fixed to the drive unit via the magnetic frame 54 .

That is, the drive unit 48 passes through the drive unit through hole 62 formed in the central portion of the bottom plate portion 60 of the magnetic frame 54 and the drive unit through hole 66 of the bobbin 52 . Furthermore, the fastening bolt 72 formed on the upper portion of the attractor 70 of the drive unit 48 is passed through the bolt through hole 58 formed in the central portion of the upper plate portion 56 of the magnetic frame 54 , and is screwed to the fastening nut 68 .

As a result, the molded coil 50 is passed through and fixed to the drive unit 48 to constitute the control unit 46 for the control valve 42 .

Further, the driving unit 48 includes a plunger case 74 , and a plunger 76 is provided inside the plunger case 74 . The plunger 76 is movable up and down and the valve body 44 is fixed thereto. Furthermore, an urging spring 80 is attached between the attractor 70 and the plunger 76 , and the urging spring 80 urges the plunger 76 to urge the valve body 44 downward, that is, toward the valve seat 78 .

Furthermore, a cover member 82 is fastened to the outer periphery of the lower end of the plunger housing 74 .

When assembling the control unit 46 configured in this way to the control valve body 10, first, as shown in FIG.

Then, the urging spring 80 and the plunger 76 to which the valve body 44 is fixed are inserted into the plunger case 74 fastened to the cover member 82 on one side and the attractor 70 to the other side.

Then, by installing a sealing member 84 such as an O-ring in the control unit connection portion 30, inserting the cover member 82 into the control unit connection portion 30, and performing caulking processing on the upper end portion 30a of the control unit connection portion 30, the control unit 46 is assembled. The control valve 42 is assembled on the control valve main body 10 .

In addition, although not shown in the figure, the control unit 46 can be detachably attached by forming a snap ring attachment groove or a control unit attachment thread or the like on the inner periphery of the control unit connecting portion 30 by press forming or roll forming. . Alternatively, only the grooves for attaching the snap ring or the threaded portions for attaching the control unit may be cut.

In addition, if necessary, the pipe joint 86 for the first flow path on the target side (system side) is attached to the seal groove portion 14 of the first pipe member 18 via a seal member 88 such as an O-ring, and is connected to the joint portion 16 (joint abutment). junction 40a) connection.

In addition, the pipe joint 90 for the second flow path on the target side (system side) is installed in the seal groove portion 22 of the second pipe member 26 via a seal member 92 such as an O-ring, and is connected to the joint portion 24 (joint contact surface). 40b) Connection.

According to the present invention constituted in this way, since the valve case unit 38 formed by joining the piping members 18, 26 constituting the flow path and the valve case 32 that accommodates the valve seat 78 etc. As with the valve body for aluminum control valves, it is possible to easily form complex structures such as flow channels, seal grooves, joints, valve chambers, valve seats, etc. by cutting.

Furthermore, since such a valve case unit 38 is used, surface processing, sealing, etc. are not required as conventionally required, and corrosion resistance and airtightness are excellent.

Therefore, compared with the conventional valve main body for a control valve made of cast aluminum, it is possible to greatly reduce the processing time and reduce the manufacturing cost with a simple process.

In addition, since such a valve case unit 38 is used, the valve main body 10 for a control valve can be provided with the function of a receiving body, and the control part 46 of the control valve 42 can be easily attached and detached.

In addition, in this embodiment, as described above, in terms of joint connection, if the joint abutment surfaces 40a, 40b on the side of the molded main body part 40 are made flat, the type connected by a seal such as an O-ring is preferable. , but if the threads are not formed by cutting the pipe members 18, 26 but by, for example, stamping or roll forming, then screw-in connection may also be used.

Furthermore, the molded main body portion 40 can also be subjected to so-called "thickness reduction" in order to reduce the weight. In addition, although not shown, through-holes for passing bolts may be provided in the molded body part 40 for connection and fixation of flanges of joints.

Example 2

Fig. 4 is a diagram showing a method of manufacturing a control valve container using the control valve case of the present invention as a control valve container for storing a control valve and a control valve unit using the control valve container Fig. 5 is a schematic cross-sectional view of an embodiment of the control valve assembled on the receiving body for a control valve of the present invention.

Hereinafter, the storage body 94 for control valves of this invention, and the manufacturing method of the control valve unit using this storage body 94 for control valves are demonstrated based on FIGS. 4-5.

First, as shown in FIG. 4 , the first pipe member 104 composed of the first flow path 98 , its seal groove portion 100 , and the joint portion 102 is produced. Furthermore, the second piping member 112 composed of the second flow path 106, its seal groove portion 108, and the joint portion 110 is fabricated. Furthermore, the third piping member 120 composed of the third flow path 114, its seal groove portion 116, and the joint portion 118 is produced. Furthermore, the fourth piping member 128 composed of the fourth flow channel 122 , its seal groove portion 124 and the joint portion 126 is manufactured.

In addition, flange-shaped outer joint mounting part end surfaces 102a, 110a, 118a, 126a are formed at the front ends of the joint parts 102, 110, 118, 126, respectively.

Furthermore, the valve housing 132 constituted by the control valve accommodation chamber 130 is produced. In addition, a retaining ring attachment member 136 for attaching the C-shaped retaining ring 134 to which the control valve 96 is fixed is produced.

Then, the first piping member 104 and the valve case 132 are joined to each other by the joining portion 138 , and the second piping member 112 and the valve case 132 are joined to each other by the joining portion 140 . Furthermore, the third piping member 120 and the valve housing 132 are joined to each other by the joining portion 142 . Further, the fourth piping member 128 and the valve housing 132 are joined to each other by the joining portion 144 . Also, a snap ring mounting member 136 is engaged at the upper end of the valve housing 132 . Thus, the valve housing unit 38 is constituted.

As shown in FIG. 4 , by integrally molding the periphery of the valve case unit 38 with a molding material to form a molded main body portion 40, a control valve receiving body 94 in which the valve case unit 38 and the molded main body portion 40 are integrated is manufactured. .

An example of the method of assembling the control valve unit using the housing body 94 for control valve configured in this way will be described based on FIGS. 4 to 5 .

That is, as shown in FIGS. 4 to 5 , the control valve unit 146 is assembled by mounting the control valve 96 in the control valve container 94 produced in this way.

That is, as shown in FIG. 4 , the control valve 96 is inserted into the control valve housing chamber 130 of the valve housing unit 38 through the snap ring mounting member 136 on the upper end of the valve housing unit 38 of the control valve housing 94 .

Furthermore, the control valve unit 146 is assembled by fixing the control valve 96 by attaching the C-shaped retaining ring 134 to the retaining ring mounting member 136 .

In this way, since the control valve 96 is fixed in the control valve housing body 94 by the retaining ring 134, the control valve can be assembled and disassembled. In addition, instead of the buckle mounting member 136, other attachable and detachable methods may be used, for example, a method using a screw fitting member or the like.

In addition, in FIG. 4, the code|symbol 148 shows sealing members, such as an O ring, respectively.

Example 3

6 to 7 are schematic cross-sectional views showing a valve body for a control valve using the valve casing for a control valve of the present invention as a control valve body and a method of manufacturing a control valve using the valve body for a control valve.

Hereinafter, the valve main body 10 for control valves of this invention, and the manufacturing method of the control valve using this valve main body 10 for control valves are demonstrated based on FIGS. 6-7.

The structure of the valve main body 10 for a control valve of this embodiment is basically the same as that of the valve main body 10 for a control valve of the first embodiment, and therefore the same reference numerals are assigned to the same components and detailed description thereof will be omitted.

That is, in the valve main body 10 for a control valve of this embodiment, unlike the first embodiment, the valve case 32 integrally formed with the plunger case 74 housing the plunger 76 is manufactured by, for example, press working.

And, similarly to FIG. 1 , the first piping member 18 composed of the first flow channel 12 , the seal groove portion 14 thereof, and the joint portion 16 is produced. Furthermore, the second piping member 26 composed of the second flow channel 20 , its seal groove portion 22 and the joint portion 24 is produced. Also, as described above, the valve housing 32 is fabricated integrally with the plunger housing 74 . In addition, flange-shaped outer joint mounting part end surfaces 16a, 24a are formed at the front ends of the joint part 16 and the joint part 24, respectively.

Then, the first piping member 18 and the valve housing 32 are joined to each other by the joining portion 34 , and the second piping member 26 and the valve housing 32 are joined to each other by the joining portion 36 , thereby constituting the valve housing unit 38 .

As shown in FIG. 6 , by integrally molding the periphery of the valve casing unit 38 with a molding material to form a molded body portion 40, the valve body 10 for a control valve in which the valve casing unit 38 and the molded body portion 40 are integrated is produced. .

Further, the molded main body portion 40 is formed in a block shape having a plane parallel to the external joint fitting portion end faces 16a, 24a.

And, as shown in FIG. 7 , the method of assembling the control valve using the valve main body 10 for the control valve configured in this way is roughly the method described in Embodiment 1, and the control valve 42 can be assembled.

That is, in the valve main body 10 for a control valve of this embodiment, since the valve housing 32 integrated with the plunger housing 74 is used, the attractor 70 can be directly welded to the valve housing 32 .

The preferred embodiment of the present invention has been described above, but the present invention is not limited thereto. For example, in the above-mentioned embodiment, the solenoid valve type control unit 46 is assembled on the valve main body 10 for the control valve, and the control valve 96 has been described when it is mounted on the retractable body 94 for the control valve, but it can also be applied to other control parts, as well as switching valves such as two-way valves and three-way valves, on-off valves, flow control valves, electric valves, etc. control valve.

Therefore, the shape of the control unit that accommodates the valve body including the piping member and the control valve, the shape of the valve case of the control valve, and the number and shape of the piping members are not limited in any way, and can be appropriately selected according to the application.

In addition, although the structure in which the piping member and the valve case are manufactured as separate parts and these parts are joined to form a valve case unit has been described, the piping member and the valve case may not be separate parts but may be The valve case unit is integrally manufactured by resin molding, metal press molding, or the like.

In addition, in the above-mentioned embodiment, as the control valve case, although one control part having the valve body of the control valve is assembled in the valve case as the control valve main body 10, and one control valve is housed in the The valve casing is used as a receiving body 94 for a control valve, but it may also be configured such that a plurality of control parts and control valves are assembled on the valve main body 10 for a control valve and the receiving body 94 for a control valve, etc., without departing from the present invention. Various changes are possible within the scope of the intended purpose.

The present invention is applicable to, for example, a valve body for a control valve used in a switching valve such as a two-way valve and a three-way valve used in a vehicle air conditioner such as an automobile air conditioner, a control valve such as an on-off valve, and a flow control valve, and as a retractable valve. A control valve casing for a control valve that can be used by storing and retracting the control valve body, and a method for manufacturing the control valve casing.

Claims (12)

1. a control valve is used valve casing, it is characterized in that possessing:

Through tube parts that constitutes runner and the valve casing unit that valve casing forms of being bonded with each other; And

Through with above-mentioned valve casing unit around with the integrally formed molded body portion that forms of moulding material.

2. control valve according to claim 1 is used valve casing, it is characterized in that,

Above-mentioned valve casing unit is made up of resin, and the moulding material that constitutes above-mentioned molded body portion is a resin.

3. control valve according to claim 1 is used valve casing, it is characterized in that,

Constitute the above-mentioned tube parts of above-mentioned valve casing unit and whole or at least one parts of above-mentioned valve casing and be made up of metal, the moulding material that constitutes above-mentioned molded body portion is a resin.

4. control valve according to claim 1 is used valve casing, it is characterized in that,

Constitute the above-mentioned tube parts of above-mentioned valve casing unit and whole or at least one parts of above-mentioned valve casing and be made up of metal, the moulding material that constitutes above-mentioned molded body portion is a metal.

5. use valve casing according to claim 3 or 4 described control valves, it is characterized in that,

Constituting the above-mentioned tube parts of above-mentioned valve casing unit and whole or at least one parts of above-mentioned valve casing makes through the metal stamping shaping.

6. use valve casing according to each described control valve in the claim 1～4, it is characterized in that,

On above-mentioned tube parts, be formed with connector portions.

7. control valve according to claim 5 is used valve casing, it is characterized in that,

On above-mentioned tube parts, be formed with connector portions.

8. control valve according to claim 6 is used valve casing, it is characterized in that,

Above-mentioned connector portions has external lug department of assembly end face at front end, and above-mentioned molded body portion forms the bulk with plane parallel with said external joint department of assembly end face.

9. control valve according to claim 7 is used valve casing, it is characterized in that,

Above-mentioned connector portions has external lug department of assembly end face at front end, and above-mentioned molded body portion forms the bulk with plane parallel with said external joint department of assembly end face.

10. control valve according to claim 1 is used valve casing, it is characterized in that,

Be that the control device that will possess the valve body of control valve is assemblied on the valve casing and constitutes control valve and use valve casing with the control valve of main body.

11. control valve according to claim 1 is used valve casing, it is characterized in that,

Be with the control valve folding and unfolding in valve casing and the control valve that constitutes control valve folding and unfolding body is used valve casing.

12. a control valve is characterized in that with the production method of valve casing,

Form the valve casing unit through tube parts and the valve casing that constitutes runner that be bonded with each other,

Through with above-mentioned valve casing unit around use valve casing with the integrally formed control valve that forms of moulding material.

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