JPH09242141A - Manufacture of faucet body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a resin-made faucet body of good sealing free of a parting line. SOLUTION: In a case where a faucet body 52 having on the circumference an upper packing groove M1 and a lower packing groove M2 fitting packings P1, P2 respectively is manufactured, an upper member 1 having an upper flange part 1a on the upper end circumference and a lower flange part 3 projecting a lower flange part 3a to the lower end circumference are formed in a vertically split type respectively. On the other hand, a cylindrical intermediate member 2 protruding a lower flange part 2a to the upper end circumference and an upper flange part 2b to the lower end circumference is formed in a horizontally split type. The upper member 3 is fitted to the intermediate member 2 from upward to form the packing groove M1 between the upper flange part 1a and the lower flange part 2a. The lower member 3 is fitted to the intermediate member 2 from downward to form the lower packing M2 between the upper flange part 2b and the lower flange part 3a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a faucet body.

[0002]

2. Description of the Related Art In a single lever type faucet 51 as shown in FIG. 8, a cartridge 53 containing a functional member is mounted on a faucet main body 52, and a functional member in the cartridge 53 is provided above. A lever handle 54 for operating the water spout main body 52 is attached to the outer periphery of the faucet body 52, and a water discharge rotating cylinder 55 that is the base of the water discharge pipe 56 is rotatably fitted to the outside. Since the faucet body 52 is made of metal, the productivity is poor and the cost is high. Therefore, studies have been made to make the faucet body 52 made of resin. As one of the manufacturing methods, a method of molding using a horizontal split mold 60 as shown in the cross section in FIG. 6 is conceivable. Generally, as shown in FIG. 7, the faucet body 52 has an upper packing groove M1 formed between an upper brim portion 52a and a lower brim portion 52b, and an upper brim portion 52 at the lower portion.
A lower packing groove M2 is formed between c and the lower collar portion 52d, and packing is fitted on the outer periphery of each of the upper packing groove M1 and the lower packing groove M2. It is configured so as to ensure the sealing property and prevent water leakage, and such a faucet main body 52 is divided into a horizontal mold 60 by a left mold 61 and a right mold 62 shown in FIG.
When resin molding is performed inside, the contact surfaces of the left mold 61 and the right mold 62 are
As shown in FIG. 7, a vertical parting line PL is formed on the faucet body 52, and the parting line PL is formed in a burr shape protruding outward.
When the packing is fitted into the outer periphery of the parting line PL protruding into the upper packing groove M1 and the lower packing groove M2 as described above, the packing is lifted at the parting line PL, and good sealing property is obtained. There is a problem that it may not be possible to secure the water, which may cause water leakage.

[0003]

The present invention has been devised in view of the above problems of the prior art, and provides a method of manufacturing a resin faucet body without forming a parting line in the packing groove. The first point is to
A method of manufacturing a faucet body having an upper packing groove and a lower packing groove on the outer circumference, into which packings are respectively fitted, wherein the upper collar portion forming the upper edge of the upper packing groove is projected to the outer circumference of the upper end to hang down cylindrically. The upper member and the lower member that forms the lower edge of the lower packing groove are protruded to the outer periphery of the lower end and stand up in a cylindrical shape separately from each other by vertically splitting, and the upper end outer periphery is formed. A cylindrical middle member with the lower collar part that constitutes the lower edge of the upper packing groove protruding and the upper collar part that constitutes the upper edge of the lower packing groove protruding on the outer periphery of the lower end is a horizontal split type that can be split horizontally. A separate member is formed, and the upper member is fitted into the formed middle member from above to form the upper packing groove between the upper collar portion of the upper member and the lower collar portion of the middle member, and the lower portion of the middle member. Fit the lower member more In is to form the lower packing groove between the lower flange portion of the upper flange portion and the lower member of the central member. A second gist is that the lower end portion of the upper member is inserted and fitted into the middle member from above, and the upper portion of the lower member is inserted and fitted into the middle member from below,
A bolt is inserted from below the lower member, and the upper end of the bolt is screwed into the upper member to connect the upper member and the lower member.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged cross-sectional configuration diagram of a faucet body 52 and a water discharge pivoting cylinder portion 55 that is rotatably fitted to the outer periphery of the faucet body 52. The faucet body 52 in this example includes an upper member 1 and The middle member 2 and the lower member 3 are separately formed, and the three members are assembled to complete the faucet body 52 having the same external shape as FIG.

That is, the upper member 1 is formed by using a vertical split mold which is split in the vertical direction as shown by the arrow in FIG. A large upper flange 1a is formed, an upper packing groove M1 is formed in the lower part thereof, and a small-diameter insertion hanging part 1b is integrally formed in the lower part thereof, which can be formed by a vertical split mold. The parting line is not formed on the outer periphery of the upper packing groove M1, and the parting line can be formed by the vertical split mold without forming the parting line in the upper packing groove M1.

Further, the lower member 3 is formed in a vertical split type in a shape as shown in the schematic view of FIG. 5, and the vertical split type is split in the AA direction of the figure, that is, in the vertical direction. At the lower end of the lower member 3, there is formed a large-diameter lower collar portion 3a protruding outward, a lower packing groove M2 is formed at the upper portion thereof, and a small-diameter insertion portion is provided above it. The standing upper part 3b is integrally formed, and the loose insertion hole 3c is formed from the bottom side. This loose insertion hole 3c can be formed by inserting a core or the like into a lower mold of a vertically split mold and splitting the mold in the vertical direction indicated by A for good molding. In particular, the lower packing groove M2 does not have a parting line and can be favorably molded by the vertical split mold.

Next, the middle member 2 is a sectional view of FIG.
Further, it is formed in a shape as shown in a perspective view in FIG. 4, and this middle member 2 is a laterally split type similar to the conventional one that is laterally split as indicated by an arrow BB in the figure. It can be molded, and a lower collar portion 2a is formed at the upper end of the middle member 2 so as to project to the outside.
b are integrally formed, and openings 2c which serve as water channels are formed at predetermined intervals in the central portion. Therefore, FIG. 3 and FIG.
Since the middle member 2 shown in FIG. 1 is formed by the horizontal split mold similar to the conventional one, the parting line similar to the conventional one is naturally formed in the vertical direction, but as shown in FIG. The member 2 is a part in which there is no packing groove into which the packing is fitted, and even if a parting line occurs, there is no problem with the sealing property.

As shown in FIG. 1, by inserting and inserting the hanging portion 1b of the upper member 1 into the molded middle member 2 from above, the upper member 1 is fitted and integrated with the middle member 2, as shown in FIG. Upper collar 1a of upper member 1 and lower collar 2 of middle member 2
An upper packing groove M1 similar to the conventional one is formed between a and the packing P1 can be fitted into the upper packing groove M1. Further, when the insertion upright portion 3b of the lower member 3 is inserted into and fitted into the middle member 2 from below, as shown in FIG. 1, the upper collar portion 2b of the middle member 2 is inserted.
The lower packing groove M2 similar to the conventional one is favorably formed between the lower brim portion 3a of the lower member 3 and the lower packing member 3, and the packing P2 can be fitted into the lower packing groove M2.
Therefore, the upper member 1 is inserted into the middle member 2 from above, and the lower member 3 is inserted into the middle member 2 from below.
When the three are integrated by inserting the plugs into each other, a faucet body having the same external shape as the conventional faucet body 52 shown in FIG. 7 is formed.

If the bolt 4 is inserted into the free insertion hole 3c of the lower member 3 from below and the screw hole 1c having an internal thread is formed on the bottom surface of the upper member 1 in advance, When the upper end of the bolt 4 is screwed into the screw hole 1c to tighten the bolt 4, and the nut 5 is tightened from the bottom surface side of the lower member 3 to the bolt 4, the lower member 3 is fixed by the bolt 4 and the nut 5. And the upper member 1 are firmly connected, and the upper member 1, the middle member 2, and the lower member 3
Is firmly fixed together.

As described above, the upper member 1 and the lower member 3 are formed by the vertical split mold without forming the parting line, and the good upper packing groove M1 and the lower packing groove M2 having no parting line are formed in the faucet. The packings P1 and P2, which can be formed in the main body 52 and are fitted into the packing grooves M1 and M2, respectively, do not come into close contact with the outer peripheries of the packing grooves M1 and M2 with certainty, and no water leak occurs. The sealability between the main body 52 and the water discharge rotation tubular portion 55 can be ensured.

[0011]

The present invention is a method of manufacturing a faucet body having an upper packing groove and a lower packing groove, respectively, into which outer packing is fitted, the upper brim portion constituting the upper edge of the upper packing groove being the upper end. An upper member that protrudes to the outer periphery and hangs in a cylindrical shape, and a lower member that protrudes to the lower end outer periphery of the lower collar portion that constitutes the lower edge of the lower packing groove and rises in a cylindrical shape,
Separately formed by a vertical split type that splits in the vertical direction, project the lower collar part that constitutes the lower edge of the upper packing groove on the outer periphery of the upper end, and the upper collar part that constitutes the upper edge of the lower packing groove on the outer periphery of the lower end. The protruding cylindrical middle member is separately formed by a laterally dividing type that can be split in the lateral direction, and the upper member is fitted into the formed middle member from above to form an upper flange portion of the upper member and a lower portion of the middle member. Since the upper packing groove is formed between the brim portions, and the lower member is fitted into the middle member from below to form the lower packing groove between the upper brim portion of the middle member and the lower brim portion of the lower member. , The upper member and the lower member are vertically split type and can be formed into a good appearance with no parting line, and by inserting the upper member and the lower member into the middle member respectively, As well It is possible to obtain a faucet body that has an external shape, and there is no parting line in the packing groove of the obtained faucet body, which ensures reliable sealing when the packing is fitted, and prevents water leakage. It is possible to manufacture a good faucet body that does not occur.

Further, the lower end portion of the upper member is inserted and fitted into the middle member from above, and the upper portion of the lower member is inserted and fitted into the inside member from below, and the bolt is inserted from below the lower member. Since the upper member of the bolt is screwed into the upper member to connect the upper member and the lower member, the upper member and the lower member are fitted in the middle member from above and below respectively, and the bolt is tightened. The lower member and the upper member can be firmly connected, and the tightening force of this bolt firmly and integrally fixes the upper member, the middle member, and the lower member, and the effect of facilitating the manufacture of the faucet body is improved. Have.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional configuration diagram of a state in which an upper member, an intermediate member, and a lower member are integrated to form a faucet body.

FIG. 2 is a schematic configuration diagram of an upper member in FIG.

FIG. 3 is a schematic cross-sectional configuration diagram of an intermediate member in FIG.

FIG. 4 is a perspective configuration diagram of an intermediate member.

5 is a schematic configuration diagram of a lower member in FIG.

FIG. 6 is a schematic transverse sectional view of a conventional horizontal split type.

FIG. 7 is a side view of a conventional faucet body.

FIG. 8 is an overall configuration diagram of a conventional single-lever water faucet.

[Explanation of symbols]

 52 Faucet Main Body 55 Water Discharge Rotating Cylinder Part 1 Upper Member 1a Upper Collar Part 1b Inserting Hanging Lower Part 1c Screw Hole 2 Middle Member 2a Lower Lower Collar Part 2b Upper Collar Part 2c Opening 3 Lower Member 3a Lower Collar Part 3b Inserting Upper Part 3c Free insertion hole 4 Bolt 5 Nut M1 Upper packing groove M2 Lower packing groove P1, P2 Packing

Claims (2)

[Claims] 1. A method of manufacturing a faucet body having an upper packing groove M1 into which a packing is fitted and a lower packing groove M2 on the outer periphery, wherein an upper collar portion 1a constituting an upper edge of the upper packing groove M1 is at an upper end. The upper member 1 which projects to the outer periphery and hangs in a cylindrical shape, and the lower member 3 which projects the lower brim portion 3a forming the lower edge of the lower packing groove M2 to the lower end outer periphery and rises in a cylindrical shape in the vertical direction, respectively. A separate vertical split type is formed, and a lower collar portion 2a forming the lower edge of the upper packing groove M1 is projected on the outer periphery of the upper end, and an upper collar portion 2b forming the upper edge of the lower packing groove M2 is formed on the outer periphery of the lower end. The projecting cylindrical middle member 2 is separately formed by a horizontal split type that is split in the lateral direction, and the upper member 1 is fitted into the formed middle member 2 from above to form an upper flange portion 1a of the upper member 1. And middle member 2
The upper packing groove M1 is formed between the lower flange portions 2a of the lower member 3a, and the lower member 3 is fitted into the intermediate member 2 from below, so that the upper flange portion 2b of the intermediate member 2 and the lower flange portion 3a of the lower member 3 are The method of manufacturing a faucet body, wherein the lower packing groove M2 is formed by. 2. The lower member is formed by inserting a lower end portion of the upper member 1 into the middle member 2 from above and fitting the upper portion of the lower member 3 into the middle member 2 from below. 3. A faucet body according to claim 1, wherein a bolt 4 is inserted from below 3 and an upper end portion of the bolt 4 is screwed into the upper member 1 to connect the upper member 1 and the lower member 3. Production method.