JP2019210634A - Faucet - Google Patents

Abstract

To provide a faucet that has an outer member rotatable with respect to an inner member and regulates a rotation of the outer member without using a separate regulation member.SOLUTION: The faucet comprises: an inner member with a cylindrical form that has an opening on a side; a stem part with the cylindrical form that is provided around a part of the inner member and is coaxial with the inner member; and a branch part with the cylindrical form that branches from the side of the stem part to the outside and is located at a location corresponding to the opening of the inner member, wherein the stem part and the branch part have the outer member, a discharge part connected to the branch part of the outer member and a pipe that is inserted from the inside of the inner member through the opening over an internal space of the branch part of the outer member and is connected to the discharge part, communicated with each other, the outer member is rotatable with respect to the inner member with the stem part as a core, and the outer member has a rib that is provided integrally with the outer member so as to protrude to an inner surface side over a branch point from the stem part to the branch part, and is in contact with an end part of the opening of the inner member by the rotation of the outer member relative to the inner member, thereby restricting the rotation of the outer member.SELECTED DRAWING: Figure 7A

Description

  The present invention relates to a faucet having an outer member rotatable with respect to an inner member.

  2. Description of the Related Art Conventionally, a faucet having a cover body that is an outer member that is rotatable relative to a faucet body that is an inner member is known that restricts the rotation of the cover body (see, for example, Patent Document 1). In this faucet, a regulating member that is separate from the faucet body and the cover body is detachably provided to regulate the rotation of the cover body.

JP 2006-233470 A

  However, in the above prior art, there is a problem from the viewpoints of assembling property and cost because a regulating member separate from the inner member and the outer member is used.

  Therefore, an object of the present invention is to provide a water faucet that has an outer member that is rotatable with respect to the inner member and restricts the rotation of the outer member without using a separate regulating member.

The faucet according to the present invention includes a cylindrical inner member having an opening on a side surface,
Provided around a part of the inner member, a cylindrical trunk portion coaxial with the inner member, and branched from the side surface of the trunk portion to the outside and disposed at a position corresponding to the opening of the inner member An outer member having a cylindrical branch portion, and the trunk portion and the branch portion communicate with each other;
A discharge part connected to the branch part of the outer member;
A tube that is inserted from the inner side of the inner member through the opening through the inner space of the branch of the outer member and connected to the discharge unit;
With
The outer member is rotatable relative to the inner member with the trunk as a core,
The outer member is provided integrally with the outer member so as to protrude toward the inner surface over a branching portion from the trunk portion to the branch portion, and the opening portion of the inner member is rotated by rotation of the outer member with respect to the inner member. And a rib for restricting the rotation of the outer member.

  According to the water faucet of the present invention, rotation of the outer member can be regulated by the rib provided integrally with the outer member without using a separate regulating member.

It is the schematic which shows the structure of the faucet concerning Embodiment 1. FIG. It is a schematic perspective view which shows the state which has joined the outer member to the inner member of the water tap of FIG. 1 so that rotation is possible. It is a schematic perspective view which shows the state which turned the branch part of the external material to the paper surface front side. It is a schematic perspective view which shows the state which turned the branch part of the external material to the paper surface left side. It is a schematic sectional drawing about the yz surface which shows the cross-sectional structure of the inner member of FIG. 2C, and an outer member. It is a schematic perspective view which shows the opening part of an inner member. It is a schematic perspective view which shows the other side and the opening part of an inner member. It is a schematic perspective view which shows the external appearance of an external material. It is a schematic sectional drawing about the yz surface which shows the cross-sectional structure of an external material. It is a schematic sectional drawing about the zx plane which shows the cross-sectional structure of an external material. It is a schematic sectional drawing about the surface perpendicular | vertical to z-axis in the branch location from the trunk part of an external material to a branch part. It is a schematic sectional drawing about the yz surface which shows the relationship between the metal mold | die at the time of manufacturing an outer member using two metal mold | dies, and the rib inside an outer member. FIG. 6B is a schematic cross-sectional view of the yz plane showing one step of the manufacturing method after extracting the mold 34b from the state of FIG. 6A and moving the mold 34a in the direction of the arrow. It is a schematic sectional drawing about the surface perpendicular | vertical to the z-axis of the inner member and outer member seen from the AA direction of FIG. 2D. It is a schematic sectional drawing about the surface perpendicular | vertical to the z-axis about the outer member of FIG. 7A. It is a schematic sectional drawing about the surface perpendicular | vertical to z-axis about the inner member of FIG. 7A. It is a fragmentary figure which shows the receiving surface of the edge part of an inner member. It is the schematic which shows the surface contact of the receiving surface of the edge part of an inner member, and the contact surface of the rib of an outer member. It is the schematic which shows the surface contact of the receiving surface of the edge part of an inner member, and the contact surface of the rib of an outer member in case the inclination of the receiving surface of the edge part of an inner member differs from FIG. 9A. It is the schematic which shows the case where the angle of the front-end | tip part which forms the contact surface of the rib of an external material is an acute angle of less than 60 degree | times. It is the schematic which shows the case where the angle of the front-end | tip part which forms the contact surface of the rib of an external material is a substantially right angle. It is the schematic which shows the case where the angle of the front-end | tip part which forms the contact surface of the rib of an external material is an obtuse angle exceeding 120 degree | times.

The faucet according to the first aspect includes a cylindrical inner member having an opening on a side surface,
Provided around a part of the inner member, a cylindrical trunk portion coaxial with the inner member, and branched from the side surface of the trunk portion to the outside and disposed at a position corresponding to the opening of the inner member An outer member having a cylindrical branch portion, and the trunk portion and the branch portion communicate with each other;
A discharge part connected to the branch part of the outer member;
A tube that is inserted from the inner side of the inner member through the opening through the inner space of the branch of the outer member and connected to the discharge unit;
With
The outer member is rotatable relative to the inner member with the trunk as a core,
The outer member is provided integrally with the outer member so as to protrude toward the inner surface over a branching portion from the trunk portion to the branch portion, and the opening portion of the inner member is rotated by rotation of the outer member with respect to the inner member. And a rib for restricting the rotation of the outer member.

  In the faucet according to a second aspect, in the first aspect, the rib is provided on both sides in the branch direction from the trunk portion to the branch portion of the outer member, and the pipe is It may be provided so as to pass between the two ribs.

The faucet according to a third aspect is the above first or second aspect, wherein the rib is
A front end portion projecting toward the inner surface side of the branch portion on the outer surface side of the trunk portion from the virtual inner surface virtually extending the inner surface of the trunk portion over the branching portion to the branch portion;
A rear end portion protruding from the virtual inner surface toward the inner surface,
You may have.

  In the faucet according to a fourth aspect, in the third aspect, the rib may have the front end portion longer than the rear end portion in the branching direction from the trunk portion to the branch portion.

  The water faucet according to a fifth aspect is the above third or fourth aspect, wherein the rib has a straight line connecting the rear end portion to the front end portion intersecting the branching direction from the trunk portion to the branch portion. As described above, it may be provided inclined with respect to the branch direction.

  The faucet according to a sixth aspect is any one of the third to fifth aspects, wherein the rear end portion of the rib is inclined with respect to a plane perpendicular to the branching direction from the trunk portion to the branch portion. You may contact | abut with the edge part of the said opening part of the said inner member in the surface.

  The faucet according to a seventh aspect is the receiving surface according to any one of the first to sixth aspects, wherein the end portion of the opening of the inner member abuts on the rib of the outer member in surface contact. You may have.

  According to the above configuration, since the end of the opening of the inner member and the rib of the outer member are in contact with each other by surface contact, the rotation of the outer member with respect to the inner member can be stably regulated. Further, the rotation angle of the outer member can be finely adjusted by changing the angle of the receiving surface at the end of the opening of the inner member.

  Hereinafter, a faucet according to an embodiment will be described with reference to the accompanying drawings. In the drawings, substantially the same members are denoted by the same reference numerals.

(Embodiment 1)
FIG. 1 is a schematic diagram showing a configuration of a faucet 40 according to the first embodiment. FIG. 2A is a schematic perspective view showing a state in which the outer member 20 is rotatably joined to the inner member 10 of the faucet 40 of FIG. FIG. 2B is a schematic perspective view showing a state in which the branch portion 23 of the outer member 20 is directed toward the front side of the drawing. FIG. 2C is a schematic perspective view showing a state in which the branch portion 23 of the outer member 20 is directed to the left side of the drawing. 2D is a schematic cross-sectional view of the yz plane showing the cross-sectional configuration of the inner member 10 and the outer member 20 in FIG. 2C. In the drawing, for convenience, the rotation axis of the outer member 20 relative to the inner member 10 is the z-axis direction. Further, the branch direction from the trunk portion 21 to the branch portion 23 of the outer member 20 is taken as the y-axis direction, and the x-axis direction is shown as a right-handed orthogonal coordinate system.

The faucet 40 according to Embodiment 1 is a single lever type faucet, as shown in FIG. The faucet 40 includes a lever 1, a cylindrical inner member 10, an outer member 20 that covers a part of the inner member 10, a pipe 32 through which mixed water of water and hot water passes, and a pipe 32 And a connected discharge unit 30. The lever 1 adjusts the mixing ratio of water and hot water and the amount of mixed water of water and hot water. The inner member 10 has an opening 12 on a side surface, and has end portions 14 a and 14 b on both sides of the opening 12. The outer member 20 is provided so as to surround a part of the inner member 10, has a cylindrical trunk portion 21 coaxial with the inner member 10, branches from the side surface of the trunk portion 21, and corresponds to the opening 12 of the inner member 10. And a cylindrical branch portion 23 arranged at a place to be. The trunk portion 21 and the branch portion 23 communicate with each other. The discharge unit 30 is connected to the branch portion 23 of the outer member 20. Further, the pipe 32 is inserted from the inner side of the inner member 10 through the opening 12 over the inner space of the branch part 23 of the outer member 20 and is connected to the discharge part 30. The external member 20 is rotatable with respect to the inner member 10 with the trunk portion 21 as a core. The external member 20 has a rib 25 that is provided integrally with the outer member 20 so as to protrude from the trunk portion 21 to the branch portion 24 to the inner surface side. The rib 25 abuts against the end portions 14 a and 14 b of the opening 12 of the inner member 10 by the rotation of the outer member 20 with respect to the inner member 10, thereby restricting the rotation of the outer member 20.
According to the faucet 40, the rotation of the outer member 20 can be regulated by the rib 25 provided integrally with the outer member 20 without using a separate regulating member.

  Below, each structural member which comprises this water tap 40 is demonstrated.

<Lever>
As shown in FIG. 1, the faucet 40 is provided with the lever 1 on the top of the outer member 20. The lever 1 adjusts the mixing ratio of water and hot water and the amount of mixed water of water and hot water.

<Inner member>
FIG. 3A is a schematic perspective view showing the opening 12 of the inner member 10. FIG. 3B is a schematic perspective view showing the side of the inner member 10 opposite to the opening 12.
As shown in FIG. 3A, the inner member 10 has a cylindrical shape having an opening 12 on a side surface. The opening 12 corresponds to a branch portion 23 of the outer member 20 described later. For example, as shown in FIG. 3A, the opening 12 opens approximately half of the entire circumference of the inner member 10. Ends 14 a and 14 b are provided on both sides of the opening 12. The end portions 14a and 14b protrude to the outer surface side when viewed from the back side of the opening 12 in FIG. 3B, and are provided with a large thickness. As shown in FIG. 7A, the end portions 14 a and 14 b come into contact with ribs 25 a and 25 b provided on the inner side of the outer member 20 by the rotation of the outer member 20 to restrict the rotation of the outer member 20.
In addition, the inner member 10 allows the pipe 32 to be inserted inside, and rotatably supports the trunk portion 21 of the outer member 20 surrounding the periphery. The inner member 10 may be made of resin, for example. The inner member 10 is fixed to, for example, a base on which the faucet 40 is installed, and supports the whole.

<Outer member>
FIG. 4 is a schematic perspective view showing the external appearance of the outer member 20. FIG. 5A is a schematic cross-sectional view of the yz plane showing the cross-sectional configuration of the outer member 20. FIG. 5B is a schematic cross-sectional view about the zx plane showing the cross-sectional configuration of the outer member 20. FIG. 5C is a schematic cross-sectional view of a surface perpendicular to the z-axis at a branch point from the trunk portion 21 to the branch portion 23 of the outer member 20.
The external member 20 has a trunk portion 21 and a branch portion 23. The trunk portion 21 is provided so as to surround a part of the inner member 10 and has a cylindrical shape coaxial with the inner member 10. The trunk portion 21 may be fitted to the upper portion of the inner member 10 so as to be rotatable about the inner member 10. The branch portion 23 branches off from the side surface of the trunk portion 21 and has a cylindrical shape that is disposed at a location corresponding to the opening 12 of the inner member 10. The branch direction from the trunk portion 21 to the branch portion 23 has an angle of, for example, 45 degrees or more and 90 degrees or less with respect to the z-axis direction. Further, the trunk portion 21 and the branch portion 23 communicate with each other. As shown in FIG. 2A, the outer member 20 can rotate with respect to the inner member 10 with the trunk portion 21 as a core. Further, as shown in FIGS. 5A to 5C, the outer member 20 has ribs 25 that are provided integrally with the outer member 20 so as to protrude from the trunk portion 21 to the branch portion 24 toward the inner surface side. . The rib 25 abuts against the end portion 14 a of the opening 12 of the inner member 10 by the rotation of the outer member 20 with respect to the inner member 10, and restricts the rotation of the outer member 20.
The outer member 20 is made of resin, for example. For example, PMMA may be used as the resin.

  The rib 25 is integrally formed with the outer member 20. The rib 25 may be formed of resin, for example. As shown in FIGS. 5B and 5C, two ribs 25 may be provided on both sides in the branching direction from the trunk portion 21 to the branch portion 23 of the outer member 20. The two ribs 25a and 25b can individually control the rotation restriction of the outer member 20 for each rotation direction. Moreover, the pipe | tube 32 may be provided so that it may pass between the two ribs 25a and 25b. Further, as shown in FIGS. 5A and 7B, the rib 25 has a front end portion 26 a that protrudes from the virtual inner surface 22 toward the outer surface side of the trunk portion 21, and a rear end portion 26 b that protrudes from the virtual inner surface 22 toward the inner surface side. May be. The virtual inner surface 22 is obtained by virtually extending the inner surface of the trunk portion 21 over a branch point 24 to the branch portion 23. The front end portion 26 a protrudes from the virtual inner surface 22 to the outer surface side of the trunk portion 21 and protrudes to the inner surface side of the branch portion 23. Further, the rib 25 may have a front end portion 26a longer than a rear end portion 26b in the branching direction (y-axis direction) from the trunk portion 21 to the branch portion 23. Thereby, since the rear end part 26b of the rib 25 is shorter than the front end part 26a, the force received by the rear end part 26b can be kept relatively small. Therefore, the rib 25 is difficult to peel off from the inner surface of the outer member 20. Further, the rib 25 is provided so as to be inclined with respect to the branch direction (y-axis direction) so that the straight line connecting the rear end portion 26b and the front end portion 26a intersects the branch direction (y-axis direction) from the trunk portion 21 to the branch portion 23. It may be done. In this case, for example, the location where the straight line connecting the rear end portion 26b and the front end portion 26a intersects the branch direction (y direction) may be substantially the same for the two ribs 25a and 25b.

<Regulation of rotation of outer member by rib>
7A is a schematic cross-sectional view of a plane perpendicular to the z-axis of the inner member 10 and the outer member 20 as viewed from the AA direction in FIG. 2D. FIG. 7B is a schematic cross-sectional view of a surface perpendicular to the z-axis for the outer member 20 of FIG. 7A. FIG. 7C is a schematic cross-sectional view of a plane perpendicular to the z-axis for the inner member 10 of FIG. 7A. FIG. 8 is a partial view showing the receiving surface 16 a of the end portion 14 a of the inner member 10. FIG. 9A is a schematic diagram showing surface contact between the receiving surface 16a of the end portion 14a of the inner member 10 and the contact surface 27a of the rib 25a of the outer member 20. FIG. 9B shows a surface between the receiving surface 16a of the end portion 14a of the inner member 10 and the contact surface 27a of the rib 25a of the outer member 20 when the inclination of the receiving surface 16a of the end portion 14a of the inner member 10 is different from that of FIG. 9A. It is the schematic which shows a contact.

Conventionally, as described above, the rotation of the outer member is regulated using a separate regulating member, but there are problems in assembling and costing including the separate member. The present inventor has found that the rotation of the outer member 20 can be restricted by providing ribs 25 projecting inside the outer member 20 and abutting against the end portions 14a and 14b of the opening 12 of the inner member 10. It came to.
Specifically, as illustrated in FIG. 7A, when the rib 25a of the outer member 20 rotates to the right, the rib 25a contacts the receiving surface 16a of the end portion 14a of the inner member 10, and the right rotation of the outer member 20 is restricted. Further, when the rib 25b of the outer member 20 rotates counterclockwise, the rib 25b contacts the receiving surface 16b of the end 14b of the inner member 10, and the counterclockwise rotation of the outer member 20 is restricted. Each of the right and left rotations of the outer member can be restricted by the two ribs 25a and 25b.

  As shown in FIGS. 7C, 8 and 9A, the receiving surface 16a of the end portion 14a of the inner member 10 has an inclination with respect to the surface along the radial direction of the end portion 14a. The inclination of the receiving surface 16a is provided so as to come into surface contact with the contact surface 27a of the rib 25a. By bringing the receiving surface 16a of the end portion 14a of the inner member 10 into contact with the contact surface 27a of the rib 25a, the rotation of the outer member 20 can be stably regulated. Moreover, since it is rotation control by surface contact, durability of each member of the edge part 14a and the rib 25a can be improved. For example, when the end portion 14a of the inner member 10 and the rib 25a of the outer member 20 are point-contacted at the respective leading ends, the load applied at the respective leading ends becomes large, and therefore each member of the end portion 14a and the rib 25a. In some cases, sufficient durability cannot be secured.

  Further, as shown in FIG. 9B, by changing the inclination of the receiving surface 16a as compared with FIG. 9A, the contact position between the end portion 14a of the inner member 10 and the rib 25a slightly changes. Therefore, the range of the rotational angle to be regulated can be finely adjusted by the inclination of the receiving surface 16a of the end portion 14a of the inner member 10.

<About the shape of the tip of the rib>
FIG. 10A is a schematic diagram illustrating a case where the angle of the tip portion forming the contact surface 27a of the rib 25a of the outer member 20 is an acute angle α1 of less than 60 degrees. FIG. 10B is a schematic diagram showing a case where the angle of the tip portion forming the contact surface 27a of the rib 25a of the outer member 20 is substantially a right angle α2. FIG. 10C is a schematic diagram illustrating a case where the angle of the tip portion forming the contact surface 27a of the rib 25a of the outer member 20 is an obtuse angle α3 exceeding 120 degrees.
As shown in FIGS. 10A to 10C, when the angle of the tip part forming the contact surface 27a of the rib 25a is an acute angle α1 of less than 60 degrees, the tip part is easily damaged. On the other hand, when the tip end of the rib 25a has an obtuse angle α3 exceeding 120 degrees, the contact by the surface contact with the end 14a of the inner member 10 is not sufficient, and the outer member 20 rotates as it is and rotation cannot be restricted. There is a case. Therefore, the angle of the tip portion forming the contact surface 27a of the rib 25a is preferably in the range of 60 degrees to 120 degrees, for example.

<Method for manufacturing outer member having rib>
FIG. 6A is a schematic cross-sectional view of the yz plane showing the relationship between the molds 34a and 34b and the ribs 25 inside the outer member 20 when the outer member 20 is manufactured using the two molds 34a and 34b. . 6B is a yz plane showing one step of the manufacturing method in which the mold 34a is extracted from the state of FIG. 6A, and then the mold 34a is moved in the arrow direction (−y direction and −z direction) to extract the mold 34a. It is a schematic sectional drawing about.
As shown in FIG. 6A, the rib 25 protrudes inside the outer member 20. Therefore, for example, when the inner mold is integrally installed to form the outer member 20 by injection molding or the like, the mold cannot be pulled out by the formed rib 25. Therefore, in FIG. 6A, the inner molds 34a and 34b are two. That is, the mold 34b that can be pulled out in the −z direction as it is and the mold 34a for forming the rib 25 are combined. First, the rib 25 which protrudes inside the outer member 20 is formed by using two metal mold | die 34a, 34b. Thereafter, after the mold 34b is pulled out in the −z direction as it is, as shown in FIG. 6B, the mold 34a can be once moved in the −y direction and then pulled out in the −z direction.
At the time of injection molding of the outer member 20, not only the above-described molds 34 a and 34 b but also a mold that covers the periphery, a mold inside the trunk portion 21, a mold inside the branch portion 23, etc. are used. Description of these molds is omitted for the sake of simplicity.

<Discharge unit>
The discharge part 30 is connected to the branch part 23 of the outer member 20, as shown in FIG. The discharge unit 30 is connected to a pipe 32 and discharges mixed water of water and hot water from the discharge port 2. In addition, the discharge part 30 may be provided so that it can be pulled out from a connection part with the branch part 23 in the state connected with the pipe | tube 32. FIG.

<Tube>
The pipe 32 is inserted from the inner side of the inner member 10 through the opening 12 over the inner space of the branch part 23 of the outer member 20, and is connected to the discharge part 30. As shown in FIG. 1, the pipe 32 may have a lead-out portion at the lower portion of the inner member 10 so that the pipe 32 can be pulled out from a connecting portion with the branch portion of the outer member 20 together with the connected discharge portion 30.
In addition, the pipe | tube 32 can pass the mixed water of water and hot water, and should just have flexibility, and may be either resin or metal.

  It should be noted that the present disclosure includes appropriately combining any of the various embodiments and / or examples described above, and each of the embodiments and / or examples. The effect which an Example has can be show | played.

  According to the water faucet of the present invention, rotation of the outer member can be regulated by the rib provided integrally with the outer member without using a separate regulating member. Therefore, it is possible to provide a faucet excellent in assemblability and cost.

DESCRIPTION OF SYMBOLS 1 Lever 2 Discharge port 10 Inner member 12 Opening part 14, 14a, 14b End part 16a, 16b Reception surface 20 External material 21 Trunk part 22 Virtual inner surface 23 Branch part 24 Branch location 25, 25a, 25b Rib 26a Front end part 26b Rear end part 27a Contact surface 30 Discharge part 32 Pipe 34a, 34b Mold 40 Water faucet

Claims (7)

A cylindrical inner member having an opening on a side surface;
Provided around a part of the inner member, a cylindrical trunk portion coaxial with the inner member, and branched from the side surface of the trunk portion to the outside and disposed at a position corresponding to the opening of the inner member An outer member having a cylindrical branch portion, and the trunk portion and the branch portion communicate with each other;
A discharge part connected to the branch part of the outer member;
A tube that is inserted from the inner side of the inner member through the opening through the inner space of the branch of the outer member and connected to the discharge unit;
With
The outer member is rotatable relative to the inner member with the trunk as a core,
The outer member is provided integrally with the outer member so as to protrude toward the inner surface over a branching portion from the trunk portion to the branch portion, and the opening portion of the inner member is rotated by rotation of the outer member with respect to the inner member. A faucet having a rib that abuts against the end of the outer member and restricts the rotation of the outer member.   2. The rib is provided on both sides of the outer member in the branching direction from the trunk portion to the branch portion, and the pipe is provided so as to pass between the two ribs. The faucet described in 1. The rib is
A front end portion projecting toward the inner surface side of the branch portion on the outer surface side of the trunk portion from the virtual inner surface virtually extending the inner surface of the trunk portion over the branching portion to the branch portion;
A rear end portion protruding from the virtual inner surface toward the inner surface,
The faucet according to claim 1 or 2, comprising:   The faucet according to claim 3, wherein the rib has the front end portion longer than the rear end portion in a branching direction from the trunk portion to the branch portion.   The rib is provided to be inclined with respect to the branch direction so that a straight line connecting the rear end portion to the front end portion intersects with a branch direction from the trunk portion to the branch portion. The faucet described in 1.   The rear end portion of the rib is in contact with an end portion of the opening of the inner member at a surface inclined with respect to a plane perpendicular to a branch direction from the trunk portion to the branch portion. The faucet according to any one of the above.   The faucet according to any one of claims 1 to 6, wherein the end of the opening of the inner member has a receiving surface that comes into surface contact with the rib of the outer member.

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