JP4773793B2 - Circulation connector for bathtub - Google Patents

Description

  This invention connects a bathtub and a forced circulation water heater installed outside the bathtub, discharges hot water in the water heater to the bathtub, and sucks the hot water in the bathtub for forced circulation More particularly, the present invention relates to a partition member attached to the front surface of the connector body and a filter member mounting structure covering the periphery from the front surface of the partition member.

  As shown in FIG. 6, it is attached to the side wall of the bathtub 1, connected to the bathtub 1 and the forced circulation water heater 2 installed outside thereof, and hot water is discharged and sucked to forcibly circulate between the bathtub 1 and the water heater 2. For example, as shown in FIG. 7, a circulation connector 3 for a bathtub is provided with a sleeve 4 inserted into a through-hole provided in a side wall of the bathtub 1, and a circulation port body 5 provided at the inner end of the bathtub 4. And an outer case 8 that is attached to a portion of the sleeve 4 that protrudes outside the bathtub and has a connecting pipe 6 for the forward piping and a connecting pipe 7 for the return piping, and the flange of the sleeve 4 and the external case 8 It is attached by inserting the side wall of the bathtub 1.

  The circulation port main body 5 has a hot water suction passage 9 and a hot water discharge passage 10, a hot water suction port 11 communicating with the hot water suction passage 9 on the front surface, and hot water communicating with the hot water discharge passage 10 on the outer peripheral surface. The partition member 13 is provided with a discharge port 12, and the removable filter member 14 is attached so as to cover the periphery from the front surface of the partition member 13.

  The partition member 13 has a substantially disc shape, and the suction port 11 of the partition member 13 is provided with a check valve 15 at an inner position, and the discharge port 12 opens at a lower position on the outer periphery of the partition member 13. In addition, the filter member 14 is formed by providing a peripheral wall 14b that is fitted on the outer periphery of the partition member 13 on the outer periphery of the front wall 14a that covers the front surface of the partition member 13, and the front wall 14a is water permeable by a metal mesh or the like. It is a certain filter wall.

  Conventionally, as shown in FIG. 8, the mounting structure for mounting the filter member 14 to the partition member 13 as described above is opened to the outer peripheral surface of the partition member 13 on the front side and bent in the circumferential direction from the middle. A plurality of engaging grooves 16 are provided, and a plurality of engaging projections 17 are provided on the inner surface of the peripheral wall 14b of the filter member 14 in an arrangement corresponding to the engaging grooves 16, and the filter member 14 is fitted into the partition member 13 for engagement. When the mating protrusion 17 is fitted into the axial portion of the locking groove 16 and then the filter member 14 is rotated in the circumferential direction, the engaging protrusion 17 is engaged with the inner end of the circumferential portion of the locking groove 16. The filter member 14 and the partition member 13 are fixed in the axial direction.

  When removing the filter member 14, contrary to the above, after rotating the filter member 14 in the circumferential direction with respect to the partition member 13, the filter member 14 may be pulled out in the axial direction.

  In the mounting structure of the filter member 14 by fitting and rotation as described above, the engagement protrusion 17 is elastic at a position in the middle of the circumferential portion of the locking groove 16 so that a click feeling can be obtained when the fixing is completed. A protrusion 18 that contacts the front surface of the partition member 13 is provided at the center position on the inner surface side of the front wall 14a of the filter member 14, and the filter member 14 and the partition member 13 are fitted together. By using the elasticity of the synthetic resin, a click feeling is generated when the engagement protrusion 17 passes through the protrusion 18.

The protrusion 19 formed at the center position of the filter member 14 causes the filter member 14 and the partition member 13 to generate an axial resistance by using the elasticity of the synthetic resin when the partition member 13 and the filter member 14 are fitted together. Thus, the click feeling is generated when the filter member 14 is fitted to the partition member 13 so that the completion of the fitting can be confirmed (see, for example, Patent Document 1).
JP 2004-61022 A

  Incidentally, in the conventional protrusion 19 formed at the center position of the filter member 14 as described above, when the partition member 13 and the filter member 14 are fitted, the protrusion 19 at the center position of the filter member 14 is abutted against the partition member 13. Since the filter member 14 is further pushed in while being in contact with each other, an axial resistance is generated by utilizing the elasticity of the synthetic resin of the filter member 14 and the partition member 13 during the operation. Therefore, the protrusion amount of the protrusion 19 cannot be increased, and the click feeling obtained is not satisfactory.

  In addition, since the filter member 14 is frequently detached and attached for cleaning, there is a situation in which the filter member 14 is deformed with the passage of time, particularly when force is applied to the filter member 14, and the filter member 14 cannot be normally fitted. appear.

  Further, in the case where the filter member 14 is composed of an outer frame 20 and an inner frame 21 and a wire mesh 22 sandwiched between them as shown in FIG. 7, the deformation of the filter member 14 causes a gap between the outer frame 20 and the inner frame 21. It is also anticipated that there will be a gap between the two and the appearance will deteriorate.

  Accordingly, an object of the present invention is to provide a spring property to the protrusion of the filter member to be brought into contact with the partition member when the partition member and the filter member are fitted, and the spring force of the protrusion causes the partition member and the filter member to be in contact with each other. When fitting, the click feeling when the engaging protrusion passes through the protrusion increases, and when the partition member and the filter member are fitted, the protrusion moves exclusively elastically. It is providing the circulation connector for bathtubs which can reduce the secular change by adding.

  In order to solve the above-described problems, the present invention provides a sleeve inserted into a through-hole provided in a side wall of a bathtub, a circulation port body provided at the inner end of the bathtub of the sleeve, and the sleeve protruding outside the bathtub. The circulation port body has a hot water suction passage and a hot water discharge passage, a hot water suction port communicating with the hot water suction passage on the front surface, and an outer peripheral surface. In the circulatory connector for a bathtub, the partition member is provided with a partition member provided with a hot water discharge port communicating with the hot water discharge passage and a removable filter member attached so as to cover the periphery from the front surface of the partition member. A structure in which an elastic contact portion that elastically presses against the opposite surface when the filter member and the partition member are attached is provided on one of the opposite surfaces of the filter member and the filter member. One in which was adopted.

  The elastic contact portion is provided at a central portion of the front wall of the filter member, and the elastic contact portion is formed by an elastic plate provided on the front wall and a protrusion protruding inward from the elastic plate. The elastic plate and the protrusion of the elastic contact portion are formed integrally with the filter member with a synthetic resin forming the filter member, and the elastic plate is curved toward the inside so that a void is formed on the back side. Can be formed.

  According to the present invention, when the partition member and the filter member are fitted together, the projection of the filter member to be brought into contact with the partition member is provided with a spring property, so that the fitting of the partition member and the filter member is performed by the spring force of the projection. At this time, the click feeling when the engagement protrusion passes through the protrusion provided in the circumferential portion of the locking groove is increased, and confirmation of the completion of the fitting can be surely obtained.

  In addition, when the partition member and the filter member are fitted together, only the protrusions are elastically deformed, and in particular, the secular change due to the force applied to the filter member can be reduced, and the filter member is fitted into the partition member normally. be able to.

  Furthermore, since the secular change due to the force applied to the filter member can be reduced, when the filter member is composed of an outer frame, a batting frame, and a wire mesh sandwiched between the outer frame, the deformation of the filter member causes a gap between the inner and outer frame bodies. Generation | occurrence | production of the situation that an appearance deteriorates because a clearance gap generate | occur | produces can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same parts as those in the conventional example shown in FIGS.

  As shown in FIG. 6, the circulation connector 3 for a bathtub includes a sleeve 4 inserted into a through hole provided in the side wall of the bathtub 1, a circulation port body 5 provided at the inner end of the bathtub 1 of the sleeve 4, The sleeve 4 includes an outer case 8 attached to a portion of the sleeve 4 that protrudes outside the bathtub 1, and is attached by sandwiching the side wall of the bathtub 1 between the flange of the sleeve 4 and the outer case 8.

  The circulation port main body 5 has a hot water suction passage 9 and a hot water discharge passage 10, a hot water suction port 11 communicating with the hot water suction passage 9 on the front surface, and hot water communicating with the hot water discharge passage 10 on the outer peripheral surface. The partition member 13 is provided with a discharge port 12, and the removable filter member 14 is attached so as to cover the periphery from the front surface of the partition member 13.

  The partition member 13 is formed in a substantially disk shape using a synthetic resin. The suction port 11 is provided with a check valve 15 at an inner position, and the discharge port 12 is located at the lower position on the outer periphery of the partition member 13. The filter member 14 is formed by providing a peripheral wall 14b fitted around the outer periphery of the partition member 13 on the outer periphery of the front wall 14a covering the front surface of the partition member 13, and the front wall 14a is formed of a metal mesh or the like. It is a filtration wall with water permeability.

  A hot water discharge port 12a that coincides with the hot water discharge port 12 of the partition member 13 is provided on the peripheral wall 14b of the filter member 14, and the filter member 14 of the first embodiment shown in FIG. 20 and an inner frame 21 using a synthetic resin and a wire mesh 22 sandwiched between them.

  As shown in FIG. 4A, the mounting structure for mounting the filter member 14 to the partition member 13 as described above is opened to the outer peripheral surface of the partition member 13 on the front side and bent in the circumferential direction from the middle. A plurality of L-shaped locking grooves 16 are provided, and a plurality of engaging protrusions 17 are provided on the inner peripheral surface of the inner frame 21 on the peripheral wall 14b of the filter member 14 in an arrangement corresponding to the locking grooves 16, as shown in FIG. As shown in b), when the filter member 14 is fitted into the partition member 13 and the engagement protrusion 17 is fitted to the axial portion 16a of the locking groove 16, the filter member 14 is rotated in the circumferential direction. 4 (e), the engagement protrusion 17 is engaged with the inner end of the circumferential portion 16b of the engagement groove 16, and the filter member 14 and the partition member 13 are fixed in the axial direction.

  In the mounting structure of the filter member 14 by fitting and rotation as described above, the engagement protrusion 17 is elastic at a position in the middle of the circumferential portion of the locking groove 16 so that a click feeling can be obtained when the fixing is completed. A projection 18 that passes through the filter member 14, and an elastic contact portion 23 that elastically presses against the front surface of the partition member 13 at the center position on the inner surface side of the front wall 14a of the filter member 14, and the filter member 14 and the partition member At the time of the fitting operation 13, a click feeling is generated when the engagement protrusion 17 passes through the protrusion 18 by using the elasticity of the synthetic resin.

  As shown in FIGS. 1 to 5, the elastic contact portion 23 is provided at the center of the front wall of the inner frame 21 of the filter member 14, and the elastic contact portion 23 is applied to the front wall of the inner frame 21. The elastic plate 25 and the projection 26 projecting inward from the elastic plate 25 are formed between the two slits 24 and formed integrally with the filter member 14 with a synthetic resin forming the inner frame 21 of the filter member 14. The elastic plate 25 is curved so as to protrude inward, so that a void 27 is formed on the back surface side, and the protrusion 26 is given elasticity in the axial direction by the elastic plate 25.

  Here, in the circulation connector 3 for bathtubs, the passage configuration of the partition member 13 may be either polar or nonpolar, and the filter member 14 is sandwiched between the outer frame 20 and the inner frame 21 and between them. In addition to the three-layer structure of the wire mesh 22, as shown in the second embodiment shown in FIG. 2, a combination of the outer frame 20 and the inner frame 21 provided with a large number of holes on the front surface, or illustration is omitted. It is possible to use a single plate having a large number of holes in its front wall, or an inner frame integrally formed with a net.

  Further, the elastic contact portion 23 can be provided on the front surface of the partition member 13 contrary to the illustrated example, and the elastic contact portion 23 is integrally formed with the filter member 14 or the partition member 13. In addition to this, another molded product may be attached, and the elastic plate 25 may employ a metal spring plate separately from the resin as illustrated.

  The circulation connector 3 for a bathtub according to the present invention is configured as described above. To attach the filter member 14 to the partition member 13, the filter member 14 is fitted into the partition member 13 and the engagement protrusion 17 is engaged. The protrusions 26 of the elastic contact portions 23 provided on the filter member 14 are brought into contact with the front surface of the partition member 13 (FIG. 4B). Is rotated in the circumferential direction, the engaging projection 17 is locked to the inner end of the circumferential portion 16b of the locking groove 16, and the filter member 14 and the partition member 13 are fixed in the axial direction.

  When the filter member 14 is mounted in the fitting and rotating manner as described above, when the filter member 14 is rotated in the circumferential direction, the engagement protrusion 17 is provided at the end of the circumferential inlet portion of the locking groove 16. By being drawn from the inclined surface 16 c into the circumferential portion 16 b of the locking groove 16, an axial movement is added to the filter member 14, whereby the elastic plate 25 of the elastic contact portion 23 is pushed. The filter member 14 is given elasticity in a direction away from the partition member 13 (FIG. 4C).

  Since the engaging groove 17 is provided with a protrusion 18 through which the engaging protrusion 17 passes elastically at a position in the middle of the circumferential portion, the engaging protrusion 17 moves in the circumferential direction of the engaging groove 16. Then, the engagement protrusion 17 elastically passes through the protrusion 18 to generate an axial resistance using the elasticity of the elastic plate (FIG. 4D). Passing and elastically falling to the circumferential inner end of the locking groove 16 due to the elasticity of the elastic plate 25, a large click feeling is generated, and the completion of fitting can be confirmed (FIG. 4 (e)). .

  When removing the filter member 14, contrary to the above, after rotating the filter member 14 in the circumferential direction with respect to the partition member 13, the filter member 14 may be pulled out in the axial direction.

The disassembled perspective view which shows 1st Embodiment of the partition member and filter member in the circulation connector for bathtubs of this invention The disassembled perspective view which shows 2nd Embodiment of the filter member in the circulation connector for bathtubs of this invention Enlarged longitudinal sectional side view of the main part showing the circulation connector for bathtub of this invention The top view which shows the state before attachment of the filter member with respect to a partition member Cross-sectional plan view with filter member fitted axially into partition member Transverse plan view showing the initial state of rotating the filter member in the circumferential direction Cross-sectional plan view showing a state in the middle of rotating the filter member in the circumferential direction Cross-sectional plan view showing the completed state of the filter member rotated in the circumferential direction Longitudinal rear view of filter member inserted axially into partition member A longitudinal rear view showing a state in the middle of rotating the filter member in the circumferential direction Longitudinal rear view showing the completed state of the filter member rotated in the circumferential direction Longitudinal sectional view showing the state of use of the circulation connector for bathtubs Longitudinal side view showing conventional circulation connector for bathtub The top view which shows the state before the attachment with respect to the partition member of the filter member in the conventional circulation connector for bathtubs

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathtub 2 Forced circulation water heater 3 Circulation connection tool 4 Bath 5 Circulation port body 6 Outward pipe connection pipe 7 Return pipe connection pipe 8 External case 9 Hot water suction passage 10 Hot water discharge passage 11 Hot water suction port 12 Hot water discharge port 13 Partition member 14 Filter member 15 Check valve 16 Locking groove 17 Engagement protrusion 18 Protrusion 19 Protrusion 19 Outer frame 21 Inner frame 22 Wire mesh 23 Elastic contact portion 24 Slit 25 Elastic plate 26 Protrusion 27 Space

Claims (3)

A sleeve inserted into a through hole provided in the side wall of the bathtub, a circulation port body provided at the inner end of the bathtub of the sleeve, and an external case attached to a portion of the sleeve protruding outside the bathtub. The circulation port body has a hot water suction passage and a hot water discharge passage, a hot water suction port communicating with the hot water suction passage on the front surface, and a hot water discharge port communicating with the hot water discharge passage on the outer peripheral surface. In the circulation connecting tool for a bathtub, which is constituted by a partition member and a detachable filter member which is attached so as to cover the periphery from the front surface of the partition member.
An elastic contact portion is provided on either one of the front surface of the partition member and the opposing surface of the filter member, which elastically presses against the opposite surface when the filter member and the partition member are attached. Circulating connector for bathtub.   The elastic contact portion is provided at a central portion of the front wall of the filter member, and the elastic contact portion is formed by an elastic plate provided on the front wall and a protrusion protruding inward from the elastic plate. The circulation connector for bathtubs according to claim 1.   The elastic plate and the protrusion of the elastic contact portion are formed integrally with the filter member with a synthetic resin forming the filter member, and the elastic plate is curved inward to form a void on the back side. The circulation connector for bathtubs according to claim 1 or 2.

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