JP5505622B2 - Shower equipment - Google Patents

Description

  The present invention relates to a shower device, and more particularly, to a double-structure shower device that guides hot water supplied from a shower hose through a water passage provided therein and discharges water from a water spray hole.

  Japanese Unexamined Patent Application Publication No. 2004-105649 (Patent Document 1) describes a shower head. The shower head is generally cylindrical and includes an internal structure that forms a water passage and an outer cover that covers the internal structure. This outer cover is disposed at the base end of the shower head and sandwiched between the lower ring coupled to the internal structure and the upper ring disposed at the distal end of the shower head and coupled to the internal structure. It is fixed.

  The structure in which the outer cover that constitutes the external appearance is sandwiched and fixed by other parts, such as this shower head, can be easily connected to the inner structure without using a special member. There is an advantage that a showerhead having a heavy structure can be formed. Furthermore, this structure has an advantage that the appearance of the shower head can be improved because the outer cover can be fixed without arranging parts such as screws for fixing the outer cover on the outer cover. is there.

JP 2004-105649 A

  However, the structure in which the outer cover is fixed by the parts fixed to the distal end portion and the proximal end portion of the internal structure of the shower head as described in Japanese Patent Application Laid-Open No. 2004-105649 is a component in which the shower head component is heated. There is a problem of causing problems when inflated. That is, since hot hot water flows through the internal structure of the shower head, the internal structure inevitably rises in temperature. On the other hand, the temperature of the outer cover does not increase so much because there is no part that is in direct contact with hot water or very little. For this reason, even if the inner structure and the outer cover are made of the same material, the elongation amounts due to thermal expansion of the inner structure and the outer cover are different.

  As described above, when the internal structure expands larger than the outer cover due to thermal expansion, the outer cover that is tightly sandwiched and assembled at room temperature and the parts that sandwich the outer cover (in the invention described in JP-A-2004-105649, the upper part) A gap is generated between the ring and the lower ring. The amount of elongation of the internal structure due to thermal expansion is about 1 mm in the case of a resin generally used for a shower head. If such a gap is generated in the shower head during use, there is a problem that not only the appearance of the shower head is deteriorated, but also the luxury feeling of the shower head is remarkably impaired.

  Accordingly, an object of the present invention is to provide a shower apparatus having a double structure that can be easily assembled and whose appearance is not impaired even when thermally expanded.

  In order to solve the above-described problems, the present invention is a double-structure shower device that guides hot water supplied from a shower hose through a water passage provided inside and discharges water from a water spray hole, and is connected to the shower hose. And a water passage forming portion that is connected to the joint and supplied with hot water supplied from the shower hose, and is connected to a tip portion of the water passage forming portion and introduced into the water passage forming portion. A water spray part in which a plurality of water spray holes for discharging hot water are formed, a shower head cover which is disposed so as to be sandwiched between the water spray part and the joint, and covers the water channel forming part, and the water channel forming part is thermally expanded. An elastic member that urges the shower head cover toward the water sprinkling part with respect to the joint so that there is no gap between the water sprinkling part and the shower head cover when extended. That.

  In this invention comprised in this way, a coupling is connected to a shower hose, a water flow path formation part is couple | bonded with a joint, and a water spray part is couple | bonded with the front-end | tip part of a water flow path formation part. A shower head cover is arrange | positioned so that it may be pinched | interposed between a water spray part and a coupling while covering a water flow path formation part. The elastic member urges the shower head cover toward the water sprinkling part with respect to the joint so that there is no gap between the water sprinkling part and the shower head cover when the water flow path forming part extends due to thermal expansion.

  According to the present invention configured as described above, even when the water passage forming portion extends due to thermal expansion, the shower head cover is urged toward the water spray portion by the elastic member. There is substantially no gap between the two and the appearance of the shower device is not impaired.

In the present invention, preferably, it further includes an elastic member cover that is formed integrally or separately from the joint and covers at least a part of the elastic member.
According to the present invention configured as described above, since at least a part of the elastic member is covered with the elastic member cover, even when the elastic member expands due to thermal expansion of the water passage forming portion, the elastic member Is not completely exposed to the outside, and the appearance of the shower device is not impaired. Further, since the elastic member cover is disposed at the base end portion of the shower device, even if a gap is formed between the elastic member cover and the shower head cover, the appearance of the shower device is not impaired.

In the present invention, preferably, the elastic member is a spring.
According to the present invention configured as described above, since the spring is used as the elastic member, it is possible to obtain a large expansion / contraction stroke with a small member and to allow a large extension of the water passage forming portion. Become. That is, according to the present invention configured as described above, a large amount of expansion and contraction can be easily realized as compared with the case where rubber packing or the like is used as the elastic member.

  In the present invention, preferably, an elastic member cover formed separately from the joint is further provided, and the elastic member is disposed between the elastic member cover and the shower head cover, and the joint includes the water passage forming portion and the screw. It is comprised so that it may couple | bond together, and an elastic member cover is pressed toward a watering part.

  According to the present invention configured as described above, since the joint is coupled to the water passage forming portion by screwing, the elastic member cover is separated from the joint. Therefore, it is possible to keep the elastic member cover from rotating even when the joint is screwed. As a result, the elastic member disposed between the elastic member cover and the shower head cover can be prevented from receiving a force other than the compressive force due to the screwing of the joint, thereby avoiding damage and wear of the elastic member. can do.

  In the present invention, preferably, the elastic member cover is formed with an elastic member recess for placing the elastic member therein, and a through-hole penetrating the elastic member cover is formed in the elastic member recess. ing.

  According to the present invention configured as described above, since the through hole penetrating the elastic member cover is formed in the elastic member recess, water leakage occurred inside the shower head cover during use of the shower device. Even in this case, since the hot water leaks through the through hole, the user can quickly recognize the water leak inside the shower head cover.

  According to the shower device of the present invention, it is possible to easily assemble while adopting a double structure, and the appearance is not impaired even when thermally expanded.

It is a perspective view which shows the state which hung the shower apparatus by embodiment of this invention on the shower hanger. It is sectional drawing of the shower apparatus by embodiment of this invention. It is a partial expanded sectional view of the shower apparatus by embodiment of this invention. It is a disassembled perspective view which shows the components incorporated in the shower head cover. It is the (a) perspective view and (b) top view of an orifice formation member. It is a top view of a pressing ring. It is a figure which expands and shows the connection part of a coupling and a shower head cover.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing a state in which a shower device according to an embodiment of the present invention is hung on a shower hanger. FIG. 2 is a cross-sectional view of a shower apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, a shower device 1 according to an embodiment of the present invention is used by being connected to a shower hose 2. The hot water supplied from the shower hose 2 is mixed with the outside air inside the shower head cover 4, and hot water containing air bubbles is discharged from the water spray holes of a plurality of water spray nozzles 6 a provided in the water spray section 6. Has been.

  Further, as shown in FIG. 2, the shower device 1 is arranged so that the axis of the shower hose 2 is inclined at an angle α with respect to the vertical axis when it is hung on the shower hanger 8 attached to the wall W. In the embodiment, the angle α is about 15 °.

Next, the internal structure of the shower apparatus according to the embodiment of the present invention will be described with reference to FIGS.
FIG. 4 is an exploded perspective view showing components built in the shower head cover 4. 5A is a perspective view of the orifice forming member, and FIG. 5B is a top view thereof. FIG. 6 is a top view of the pressing ring. FIG. 7 is an enlarged view showing a connection portion between the joint 16 and the shower head cover 4.

  As shown in FIG. 4, the shower head cover 4 includes a first water passage member 10, a second water passage member 12 connected to the first water passage member 10, a first water passage member 10, and a first water passage member 10. An orifice forming member 14 to be inserted into the coupling portion of the two water-permeable members 12 is incorporated. Furthermore, the shower device 1 includes a joint 16 that connects the base end portion of the first water passage member 10 and the shower hose 2, and a pressing ring that is an elastic member cover disposed between the first water passage member 10 and the joint 16. 18 In addition, in this embodiment, the 1st water flow member 10 and the 2nd water flow member 12 comprise a water flow path formation part.

  The shower head cover 4 is a cylindrical member formed so as to surround the first water passage member 10 and the second water passage member 12. The shower head cover 4 and the water sprinkling unit 6 generally constitute the appearance of the shower device 1.

  The 1st water flow member 10 has the 1st water flow pipe 10a and the some rib 10b which is a guide protrusion formed in the circumference | surroundings. The 1st water flow member 10 is comprised so that the base end part may be screwed together with joint 16, and hot water supplied via shower hose 2 and joint 16 flows through the inside of the 1st water pipe 10a. It is configured as follows. The first water flow member 10 is disposed inside the shower head cover 4, and a space 4 a (FIG. 2) is formed between the inside of the shower head cover 4 and the outside of the first water flow member 10. The plurality of ribs 10b formed around the first water pipe 10a secures the space 4a between the shower head cover 4 and the first water flow member 10, while the first water flow member 10 is located inside the shower head cover 4. It is designed to be positioned. Furthermore, a first orifice receiving recess 10 c that receives the orifice forming member 14 is provided at the tip of the first water passage member 10.

  The second water passage member 12 is a box-like member that is coupled to the distal end side of the first water passage member 10. A second orifice receiving recess 12 a (FIG. 3A) that receives the orifice forming member 14 is provided at the proximal end portion of the second water passage member 12. Therefore, the orifice forming member 14 is simultaneously received in the first orifice receiving recess 10 c of the first water passing member 10 and the second orifice receiving recess 12 a of the second water passing member 12. It is fixed by being sandwiched between the second water passing members 12. Further, in a state in which the first orifice receiving recess 10c and the second orifice receiving recess 12a receive the orifice forming member 14, the first water passing member 10 and the second water passing member 12 are connected by two screws 13 (FIG. 4). Combined.

  An air mixing chamber 12b (FIG. 2) is formed on the distal end side of the second orifice receiving recess 12a so as to communicate with the second orifice receiving recess 12a and the flow path expands in a tapered shape toward the distal end. Further, a water sprinkling chamber 12c (FIG. 2) is formed on the front end side of the air mixing chamber 12b so as to communicate with the air mixing chamber 12b and to which the sprinkler 6 is attached. The watering chamber 12c has an open front side, and a watering portion 6 is attached to the open portion. Watertightness between the second water passing member 12 and the water sprinkling unit 6 is ensured by packing (not shown).

  The water sprinkling part 6 is comprised from the porous nozzle 6b which comprises a part of external appearance of the shower apparatus 1 with the shower head cover 4, and the rubber-made nozzle formation member 6c provided with the some watering nozzle 6a. Each watering nozzle 6a formed on the nozzle forming member 6c is arranged so as to be aligned with a plurality of holes formed in the perforated plate 6b. When the nozzle forming member 6c and the perforated plate 6b are overlapped, The nozzle 6a is configured to protrude from each hole of the perforated plate 6b. Further, when the nozzle forming member 6c and the perforated plate 6b are attached to the second water flow member 12, the tips of the plurality of pins 12d (FIG. 2) provided in the sprinkling chamber 12c push the back surface of the nozzle forming member 6c and The forming member 6c is brought into close contact with the perforated plate 6b.

  In addition, a bent portion 6d (FIG. 2) is formed continuously from the porous plate 6b by bending about 90 ° with respect to the porous plate 6b. The bent portion 6d is configured to come into contact with the tip of the shower head cover 4 substantially without a gap, and constitutes a part of the appearance of the tip of the shower device 1. Similarly, the perforated plate 6b is configured so as to substantially contact with the cover notch 4b (FIG. 1) at the tip of the shower head cover 4 without any gap, and constitutes a part of the appearance of the tip of the shower device 1. Yes.

  As shown in FIG. 5, the orifice forming member 14 is a cylindrical member having an oval cross section, and four ribs 14a, 14b, 14c, and 14d are formed in order so as to surround the outer periphery thereof. O-rings (FIG. 3A) are disposed between the ribs 14a and 14b and between the ribs 14c and 14d, respectively. These O-rings ensure watertightness between the first orifice receiving recess 10 c and the orifice forming member 14 and between the two orifice receiving recess 12 a and the orifice forming member 14. Further, a slit-like second air introduction hole 20 that is a water passage air introduction hole is formed between the rib 14b and the rib 14c, and the outer peripheral side and the inner peripheral side of the orifice forming member 14 are communicated with each other. Further, a partition wall 22 is provided inside the orifice forming member 14, and a plurality of orifice holes 22a are formed in the partition wall. The second air introduction hole 20 is formed on the downstream side in the immediate vicinity of the partition wall 22, and hot water whose flow velocity is increased through the orifice hole 22 a introduces air from the second air introduction hole 20. . In the present embodiment, the partition wall 22 and the orifice hole 22a constitute an orifice part.

  Further, the space between the rib 14b and the rib 14c forms a water retention chamber 24 together with the first orifice receiving recess 10c and the second orifice receiving recess 12a. As will be described later, when the shower device 1 is not used, hot water is retained in the water retention chamber 24, and the second air introduction hole 20 and the orifice hole 22a provided in the partition wall 22 are submerged. Furthermore, the notch 26 (FIG. 4) is formed in the front-end | tip part of the 1st water flow member 10, When this 1st water flow member 10 and the 2nd water flow member 12 are couple | bonded, this notch 26, A water retention chamber communication hole is formed between the first water flow member 10 and the second water flow member 12. That is, the water retention chamber 24 communicates with the space 4a between the shower head cover 4 and the first water flow member 10 through the notch 26 (water retention chamber communication hole).

  Furthermore, since the orifice forming member 14 is disposed at the joint portion of the first water passage member 10 and the second water passage member 12, the orifice hole 22a is exposed to the outside by dividing the joint portion, and the orifice hole 22a. Maintenance can be performed.

  As shown in FIG. 6, the pressing ring 18 is a ring-shaped member disposed at the lower end portion of the shower head cover 4. A first air introduction hole 28 is formed in the holding ring 18, and a space 4 a between the shower head cover 4 and the first water passage member 10 is communicated with outside air through the first air introduction hole 28. That is, outside air passes through the gap between the pressure ring 18 and the shower hose 2, the first air introduction hole 28, and the gap between the pressure ring 18 and the shower head cover 4, as indicated by an arrow A in FIG. Are configured to communicate with the space 4a. Accordingly, the first air introduction hole 28 is positioned closer to the proximal end side of the shower device 1 than the second air introduction hole 20, that is, the side to which the shower hose 2 of the shower device 1 is connected. Further, the first air introduction hole 28 is disposed at the base end portion of the shower device 1, that is, the portion to which the shower hose 2 of the shower device 1 is connected. In the present embodiment, the shower head cover 4 and the pressing ring 18 constitute a shower head body.

  Further, the cross-sectional area of the first air introduction hole 28 is formed larger than the cross-sectional area of the second air introduction hole 20. In the present embodiment, the cross-sectional area of the first air introduction hole 28 is configured to be twice the cross-sectional area of the second air introduction hole 20.

  Further, the rotation position of the pressing ring 18 is positioned with respect to the shower head cover 4 by a notch 18 a formed in the pressing ring 18 and a protrusion (not shown) provided on the first water passage member 10. It has become. Thereby, the 1st air introduction hole 28 of the pressing ring 18 is positioned in the front side of the shower head cover 4, ie, the side in which the water sprinkling part 6 is arrange | positioned. Therefore, the first air introduction hole 28 is always positioned so as to open toward the front side of the shower head cover 4.

Next, with reference to FIG. 7, the mounting structure of the shower head cover 4 will be described.
As shown in FIG. 7, the male screw 16 a formed on the distal end side of the joint 16 is screwed with a female screw 10 d formed on the proximal end portion of the first water passage member 10, and the joint 16 and the first water passage are formed. Member 10 is joined. Further, the step portion 16 b of the joint 16 is engaged with the concave portion 18 b of the pressing ring 18. Further, four coil spring arrangement holes 18c (FIG. 6) that are elastic member recesses are provided on the circumference of the holding ring 18, and springs 30 that are elastic members are arranged in the respective coil spring arrangement holes 18c. ing. The distal ends of the springs 30 are in contact with the proximal end of the shower head cover 4 and urge the shower head cover 4 toward the distal end side of the shower device 1. On the other hand, the tip of the energized shower head cover 4 is in contact with the bent portion 6d (FIG. 2) of the perforated plate 6b substantially without a gap, and the cover notch 4b of the shower head cover 4 is formed of the perforated plate 6b. It is contact | abutted substantially without the clearance gap with the peripheral part.

  Further, as shown in FIG. 7, the holding ring 18 has an edge portion 18d, and covers each spring 30 so that the spring 30 disposed in each coil spring arrangement hole 18c cannot be seen from the outside. . Further, a through hole 18e that penetrates the holding ring 18 is formed in each coil spring arrangement hole 18c.

  The shower head cover 4 is pressed against the bent portion 6d by the urging force of the spring 30, and the position of the shower head cover 4 is fixed. Thereby, the shower head cover 4 and the water sprinkling part 6 unite and comprise the external appearance of the shower apparatus 1. FIG. That is, the shower head cover 4 is fixed by being sandwiched between the bent portion 6 d of the water sprinkling portion 6 and the pressing ring 18.

  When assembling the shower device 1, first, the water sprinkling unit 6, the second water passage member 12, the orifice forming member 14, and the first water passage member 10 are combined, and the combined assembly 32 (FIG. 4) Insert from the front end side of the shower head cover 4. As shown in FIG. 2, the shower head cover 4 is formed in a curved shape as a whole. However, since the rib 10 b provided in the first water passage member 10 guides the insertion, the assembly 32 is attached to the shower head cover 4. It can be inserted smoothly. Next, the spring 30 is arranged in each coil spring arrangement hole 18c of the holding ring 18, and this is brought into contact with the base end of the shower head cover 4 into which the assembly 32 is inserted. Further, the joint 16 is attached to the proximal end of the shower head cover 4 with which the pressing ring 18 is in contact. That is, the male screw 16 a of the joint 16 is screwed into the female screw 10 d at the base end of the first water passage member 10. By screwing the joint 16 into the first water flow member 10, the step portion 16 b of the joint 16 presses the concave portion 18 b of the press ring 18, and the press ring 18 is fixed. At this time, the joint 16 is rotated for screwing, but the presser ring 18 acts like a slip washer and stops without being rotated. For this reason, each spring 30 sandwiched between the shower head cover 4 and the pressing ring 18 is simply compressed in the axial direction, and almost no force acts to bend the spring 30 with respect to the axial line. When the joint 16 is screwed into the first water passing member 10 to a predetermined position, each spring 30 is compressed, and the shower head cover 4 is pressed against the water spraying portion 6 by the biasing force of these springs 30.

  Moreover, the temperature of the first water passage member 10 and the second water passage member 12 rises when hot water is introduced therein, and elongation due to thermal expansion occurs. On the other hand, since hot water is not in direct contact with the shower head cover 4, the elongation due to the thermal expansion of the shower head cover 4 is less than the total elongation of the first water passage member 10 and the second water passage member 12. For this reason, the distance between the bent part 6 d of the water spray part 6 and the pressing ring 18 becomes longer than the length of the shower head cover 4 due to thermal expansion. Even in this state, the spring 30 disposed at the proximal end of the shower head cover 4 urges the shower head cover 4 toward the distal end side of the shower device 1, and therefore, between the distal end of the shower head cover 4 and the bent portion 6 d. In addition, the state where the cover notch 4b and the peripheral edge of the perforated plate 6b are still in contact with each other is maintained.

  On the other hand, each spring 30 urging the shower head cover 4 toward the distal end side of the shower device 1 extends, so that the shower head cover 4 is moved toward the distal end side of the shower device 1 with respect to the holding ring 18 and the shower head cover 4 is moved. A gap C (FIG. 7) between the head cover 4 and the pressing ring 18 is increased. However, since the gap C is at the base end portion of the shower device 1, it is not so noticeable and the appearance of the shower device 1 is not impaired. In addition, since a part of the base end of the shower head cover 4 enters the inside of the edge portion 18d of the holding ring 18, the spring 30 and other built-in parts are exposed to the outside even when the gap C is large. It is not exposed and the appearance is not impaired.

Next, the operation of the shower device 1 according to the embodiment of the present invention will be described.
First, the hot water supplied from the shower hose 2 reaches the orifice forming member 14 through the joint 16 and the first water passing member 10. Hot water reaching the orifice forming member 14 flows into a plurality of orifice holes 22 a provided in the partition wall 22. The hot water whose flow passage cross-sectional area has been narrowed by the orifice hole 22a has an increased flow velocity, and the pressure of the hot water decreases on the downstream side of the partition wall 22. When the pressure of the hot water is lowered, the air in the space 4a between the shower head cover 4 and the first water passage member 10 is introduced into the water passage through the second air introduction hole 20 by the ejector effect. That is, outside air flows into the space 4 a between the shower head cover 4 and the first water passing member 10 through the first air introduction hole 28 from the gap between the shower head cover 4 and the pressing ring 18. The air in the space 4a flows into the water retention chamber 24 through the water retention chamber communication hole formed by the notch 26, and the air that has flowed into the water retention chamber 24 passes through the second air introduction hole 20 and enters the water passage. To be introduced.

Here, since the first air introduction hole 28 is disposed on the front side of the shower head cover 4, the user may accidentally block the first air introduction hole 28 by gripping the shower device 1. Is unlikely to occur. Moreover, since the 1st air introduction hole 28 is arrange | positioned in the lower end part of the shower apparatus 1, the probability that the 1st air introduction hole 28 will be obstruct | occluded by a user's finger | toe becomes still lower.
The air introduced into the water flow path through the second air introduction hole 20 on the downstream side of the partition wall 22 is sufficiently mixed with hot water in the air mixing chamber 12b whose flow path cross-sectional area is widened toward the downstream side. . The hot water mixed with air flows into the water sprinkling chamber 12c and is discharged as hot water containing bubbles from the watering holes of a plurality of watering nozzles 6a provided in the watering portion 6.

  Further, when air is introduced into the water passage through the second air introduction hole 20, air may be generated due to the small cross-sectional area of the second air introduction hole 20. Is generated inside the shower head cover 4, so that the sound leaking to the outside is very small. Furthermore, when the outside air flows into the space 4a between the shower head cover 4 and the first water passing member 10 through the first air introduction hole 28, the first air introduction hole 28 has a large cross-sectional area. Therefore, the flow rate of air is slow and the generation of air noise can be suppressed. Thereby, the air sound which leaks outside the shower apparatus 1 can be reduced, mixing an appropriate amount of air with the hot water flowing through the water passage.

  Next, when the hot water supplied from the shower hose 2 was stopped and the shower device 1 was hung on the shower hanger 8 attached to the wall surface W as shown in FIG. The hot water is discharged to the outside of the shower device 1 through the first air introduction hole 28. That is, the hot water in the second water passage member 12 flows back into the water retention chamber 24 through the second air introduction hole 20, and the hot water in the water retention chamber 24 passes through the notch 26 (water retention chamber communication hole). It flows into the space 4 a between the shower head cover 4 and the first water passing member 10. The hot water that has flowed into the space 4 a is discharged to the outside of the shower device 1 through the first air introduction hole 28 provided at the base end of the shower device 1. Moreover, in the state hung on the shower hanger 8 shown in FIG. 2, since the one water flow member 10 is located in the lowest part of the shower apparatus 1, the hot water in the space 4a is discharged outside the shower apparatus 1 without remaining. Is done. A part of the hot water flowing into the space 4 a is discharged to the outside of the shower device 1 through each through hole 18 e provided in the coil spring arrangement hole 18 c of the holding ring 18.

  Furthermore, even when water leaks inside the shower head cover 4 during water discharge, the leaked hot water is discharged to the outside of the shower device 1 through the respective through holes 18e. The water leak in 4 can be recognized.

  On the other hand, since the notch 26 is located above the second air introduction hole 20 in the state shown in FIG. 2, a part of the hot water in the water retention chamber 24 remains without being discharged. For this reason, in the non-use state of the shower apparatus 1 from which the hot water from the shower hose 2 was stopped, the surface of the hot water in the shower apparatus 1 is generally at the position indicated by the straight line L in FIG. For this reason, the orifice hole 22 a provided in the partition wall 22 is maintained in a submerged state even when the shower apparatus 1 is not in use. When the orifice hole 22a is maintained in a submerged state, the orifice hole 22a can be prevented from being dried, and calcium or the like contained in the hot water can be prevented from accumulating in the orifice hole 22a and clogging the orifice hole 22a.

  According to the shower device of the embodiment of the present invention, even when the first water passage member 10 and the second water passage member 12 extend due to thermal expansion, the shower head cover 4 is attached to the sprinkling portion 6 by the four springs 30. Since it is urged | biased toward, the clearance gap between the bending part 6d of the water sprinkling part 6 and the shower head cover 4 or between the perforated panel 6b and the shower head cover 4 does not produce substantially, and the shower apparatus 1 The appearance is not impaired. Thereby, while the outside of the 1st water flow member 10 and the 2nd water flow member 12 is covered, and the assembly of the shower head cover 4 which forms a double structure is made easy, the 1st water flow member 10 and the 2nd water flow inside. Even when the member 12 is thermally expanded, the appearance of the shower device can be prevented from being damaged.

  Further, according to the shower device of the present embodiment, since the spring 30 is almost covered with the pressing ring 18, the spring 30 is extended with the thermal expansion of the first water passage member 10 and the second water passage member 12. Even in this case, the spring 30 is hardly exposed to the outside, and the appearance of the shower device 1 is not impaired. Further, since the holding ring 18 is disposed at the base end portion of the shower device 1, even if a gap C is formed between the holding ring 18 and the shower head cover 4 or the gap C is widened, The appearance is not impaired.

  Furthermore, according to the shower apparatus of this embodiment, since the spring 30 is used as an elastic member, a large expansion / contraction stroke can be obtained with a small member, and the first water flow member 10 and the second water flow member 12 can be obtained. It is possible to tolerate a large elongation of. That is, according to the present embodiment, a large expansion / contraction amount can be easily realized as compared with the case where rubber packing or the like is used as the elastic member.

  Moreover, according to the shower apparatus of this embodiment, since the coupling 16 is coupled to the first water flow member 10 by screwing, the joint 16 is rotated with respect to the first water flow member 10, but the holding ring 18 is Since it is formed separately from the joint 16, it is possible to keep the pressing ring 18 from rotating even when the joint 16 is screwed. Thereby, it is possible to prevent each spring 30 disposed between the holding ring 18 and the shower head cover 4 from receiving a force other than the compressive force due to the screwing of the joint 16. Wear can be avoided.

  Furthermore, according to the shower device of the present embodiment, since the through hole 18e penetrating the holding ring 18 is formed in the coil spring arrangement hole 18c, the shower head cover 4 is used while the shower device 1 is in use. Even when water leaks, the hot water leaks through the through hole 18e, so the user can quickly recognize the water leak inside the shower head cover 4 and can take measures such as maintenance.

  As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the above-described embodiment, the joint 16 and the pressing ring 18 are configured separately, but a joint in which these members are integrated can also be used. In this case, the joint formed integrally presses an elastic member such as a spring directly, and the shower head cover 4 is configured to come into contact with the water sprinkling portion 6 by the urging force of the elastic member. In the above-described embodiment, the coil spring is used as the elastic member. However, instead of the coil spring, a packing made of rubber or the like, an O-ring, or the like can be used.

DESCRIPTION OF SYMBOLS 1 Shower apparatus 2 Shower hose 4 Shower head cover 4a Space 4b Cover notch part 6 Sprinkling part 6a Sprinkling nozzle 6b Perforated plate 6c Nozzle formation member 6d Bending part 8 Shower hanger 10 1st water flow member 10a 1st water flow pipe 10b Rib 10c 1st 1 orifice receiving recess 10 d female screw 12 second water passage member 12 a second orifice receiving recess 12 b air mixing chamber 12 c water spray chamber 12 d pin 14 orifice forming members 14 a, 14 b, 14 c, 14 d rib 16 joint 16 a male screw 16 b step 18 holding Ring (elastic member covering)
18a Notch 18b Recess 18c Coil spring arrangement hole (elastic member recess)
18d Edge 18e Through-hole 20 Second air introduction hole 22 Partition 22a Orifice hole 24 Water retention chamber 26 Notch 28 First air introduction hole 30 Spring (elastic member)

Claims (5)

A double-structure shower device that guides hot water supplied from a shower hose through a water passage provided inside and discharges water from a water spray hole,
A joint connected to the shower hose;
A water passage forming part that is coupled to this joint and into which hot water supplied from the shower hose is introduced,
A water sprinkling part formed with a plurality of water sprinkling holes connected to the tip of the water flow path forming part and discharging hot water introduced into the water flow path forming part,
A shower head cover that is disposed so as to be sandwiched between the water sprinkling part and the joint, and covers the water passage forming part,
Elasticity that biases the shower head cover toward the water sprinkling part with respect to the joint so that there is no gap between the water sprinkling part and the shower head cover when the water flow path forming part extends due to thermal expansion. Members,
A shower apparatus characterized by comprising:   The shower device according to claim 1, further comprising an elastic member cover configured to be integral with or separate from the joint and covering at least a part of the elastic member.   The shower device according to claim 1, wherein the elastic member is a spring.   Furthermore, it has an elastic member cover formed separately from the joint, and the elastic member is disposed between the elastic member cover and the shower head cover, and the joint is screwed with the water passage forming portion. The shower device according to claim 3, wherein the shower device is configured to be coupled and presses the elastic member cover toward the water sprinkling portion.   The elastic member cover is formed with an elastic member recess for placing the elastic member therein, and a through-hole penetrating the elastic member cover is formed in the elastic member recess. 4. The shower device according to 4.

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