PL247557B1 - Sliding passage of a flexible water pipe through the wall of a sanitary vessel, especially a shower hose through the rim of a bathtub - Google Patents

Abstract

The culvert comprises a mounting pipe (4) secured in the opening in the vessel wall (3) by a bilateral clamping with a threaded connection of the upper support collar (6) and a fastening nut (8). The mounting pipe (4) has at its upper end a conically open upward seating socket (11) for the lower end of the shower head and, below it, coaxial with the seating socket (11): a circumferential seal for the outer surface of the shower hose (2) and a centring pipe (18). The essence of the solution is that the circumferential seal is built directly into the bottom of the seating socket (11) and consists of: a passage opening (13) of the shower hose (2), a conical-flange ring gasket (14), a washer (15) and a ring compression nut (16), connected by an internal thread to the mounting pipe (4). The passage opening (13) has a truncated cone profile, the upper, smaller diameter (D2) of which, between the rounded edges, is 1% to 3% smaller than the outer diameter (D3) of the shower hose (2).

Description

Description of the invention

The subject of the invention is a sliding passage of a flexible water pipe with a smooth outer surface through the wall of a sanitary vessel, especially a shower hose, through the rim of a bathtub or through the wall of a large countertop washbasin.

A long-known solution—exemplified by patent DE8715230U and used in large hairdressing sinks—involves sliding a flexible water hose to a shower head through an opening in the horizontal wall of the sink for washing the client's hair. The grommet, mounted in the wall opening, has a mounting tube, which is secured in the wall opening by a double-sided clamp between its ring flange and the bottom nut. A conical seat is provided at the upper end of the mounting tube for resting the lower end of the shower head. While this grommet design allows for convenient control of the water flow direction, it does not prevent water from dripping down the outer surface of the hose through the grommet, which can lead to wetting the floor under the countertop or sanitary ware cabinet.

This problem in the culvert described in patent EP1830008B1 was solved by a design that includes a support tube coaxially connected to the mounting tube. Inside the culvert, the following elements are built downwards: a transverse wall guiding the shower hose; and a cup-shaped seal that scrapes water from the outer surface of the shower hose inserted when the shower head is inserted into the socket in the mounting tube and slides down through the culvert. The seal is attached at its lower edge to the tubular hose guide, integrated with a ring-shaped container for the scraped water. From the container, water is drained through a flexible hose to a drain under the sanitary container. Separating the water flowing down the outer surface of the hose and directing it to a separate container with a drain to the sewer system requires the design of an additional channel with a container, which can harbor fungi and molds, making cleaning difficult.

This invention solves the problem of simplifying the design and ensuring the tightness of the flexible shower hose passage through the wall of a sanitary vessel, while eliminating inaccessible dirt accumulation points. The solution partially utilizes known technical means and comprises: a mounting pipe secured in the vessel wall opening by a bilateral clamping threaded connection of the upper support flange with a fastening nut, wherein the mounting pipe has at its upper end a conically open upward seating socket for the lower end of the shower head, and a circumferential seal for the outer surface of the shower hose, coaxial with the seating socket, and a centering pipe mounted below. The invention is distinguished by the circumferential seal being built directly into the bottom of the seating socket and consisting of:

- a shower hose passage opening with a truncated cone profile, with the smaller base pointing upwards and whose upper diameter between the radiused edges is 1 to 3% smaller than the external diameter of the shower hose,

- a conical-flange ring gasket inserted from below into the passage opening and whose flange is supported by a washer, and

- a ring-shaped pressure nut that is connected to the mounting pipe by an internal thread.

This solution, known in the language of practitioners as the Dry Box system, enables the water collected from the smooth, flexible shower hose to flow into a tight settling socket and to flow back into the sanitary container, squeezing out the water when the shower head tip is inserted into the socket in the rest position.

A preferred design is one in which the lower end of the mounting pipe is connected to a guide nut having a pipe protruding downwards, centring the coaxiality of the shower hose with the mounting socket.

It is also advantageous if an outflow groove is made on the conical side of the seat from the bottom to its upper surface, which facilitates squeezing water out of the seat in the last phase of the shower head seating.

The accessibility of cleaning of sediments accumulating in the settling seat and the possibility of adjusting the seal are significantly facilitated in the version with a retaining collar connected to the mounting pipe by a threaded connection with an outer diameter smaller than the diameter of the hole in the vessel wall, and the settling seat on the front surface has at least two teeth cut for a claw wrench and is connected by a thread to the inner surface of the mounting pipe.

The solution of the culvert according to the invention is approximated by the description of the exemplary embodiment shown in the drawing, the individual figures of which represent:

Fig. 1 - situational view of the culvert 1 in connection with functionally cooperating elements: the rim of the bathtub and the hose of the water supply system connection, Fig. 2 - axial cross-section of the culvert,

Fig. 3 - perspective exploded view of the set of culvert elements.

The sliding passage 1 of the flexible plastic shower hose 2 with a smooth outer surface is separated from the arrangement in Fig. 1 by a rectangular outline of the axial line. The shower hose 2, threaded through the duct 1 through the horizontal wall 3 of the bathtub rim, is supplied at its lower end below the wall 3 by the connecting hose 19 with water from the bathroom faucet, and at the other end is connected through the conical tip 10 to the shower head 9. The duct 1 is mounted in the mounting hole 5 of the wall 3 of the bathtub rim by the mounting pipe 4 fixed with a clamp by elastic ring washers 7 between the support flange 6 and the fastening nut 8 that embrace the wall 3. The support flange 6 is connected to the mounting pipe 4 by a threaded connection with an outer diameter D1 smaller than the diameter (D) of the mounting hole 5 - which enables easy disassembly of the duct by sliding it out in both directions and performing the operations of adjusting the tightness, replacing the seal 14 or cleaning it from sediment. The mounting pipe 4 has at its upper end a conically open upward seating socket 11, the dimensions of which correspond to the end 10 of the shower head connection 9.

The mounting socket 11 has at least two teeth 24 cut out on its front surface for the claw wrench 22 and is connected by a thread to the inner surface of the mounting pipe 4. Coaxially in the bottom of the mounting socket 11 there is a sliding circumferential seal 12 of the outer surface of the shower hose 2 built in. The seal 12 is formed by:

- a passage opening 13 of the shower hose 2 having a truncated cone profile, with its smaller base directed upwards and whose upper diameter D2 between the edges rounded by a radius r is smaller by 1 to 3% than the outer diameter D3 of the shower hose 2, and

- a conical-flange ring gasket 14 inserted from below into the passage opening 13 and whose flange is supported by a washer 15 and a ring pressure nut 16 connected by an internal thread to the assembly pipe 4. In the exemplary embodiment, a plastic shower hose 2 was used, with a durable, shiny and damage-resistant chrome coating, outer diameter D3 = 15 mm, while the diameter D2 of the rounded edges scraping water in the passage opening 13 was 14.7 mm. The lower end of the assembly pipe 4 is connected to a guide nut 17 having a downwardly protruding centering pipe 18, which ensures the coaxiality of the shower hose 2 with the mounting socket 1 - the straight guidance of the shower hose 2 facilitates its sliding through the seal 12 of the passage 1. The action of retracting the shower hose 2 after bathing, which consists in mounting the shower head 9 in the mounting socket 11, is supported by the action of a spring 20 tensioned between the guide nut 17 and the resistance clamp 21 fixed on the connecting hose 19. In the final phase of mounting the shower head 9, the outflow of water from the mounting socket 11 is facilitated by a vertically directed outflow groove 23 made on the conical side of the mounting socket 11.

List of markings in the drawing

1. culvert

2. shower hose

3. vessel wall

4. mounting pipe

5. mounting hole

6. retaining collar

7. washer

8. mounting nut

9. shower head

10. conical earpiece

11. mounting socket

12. circumferential seal

13. passage hole

14. conical flange ring gasket

15. washer

16. compression nut

17. guide nut

18. centering tube

19. connection hose

20. spring

21. spring retaining clamp

22. claw wrench

23. outlet groove

24th tooth on the front of the mounting seat

D. diameter of the hole in the wall of the sanitary vessel

D1. diameter of the threaded connection of the support flange with the assembly pipe D2. upper diameter of the hole in the bottom of the mounting socket, with a rounded edge D3. outer diameter of the shower hose r. radius of the rounding of the upper edge of the passage hole

Claims (4)

Patent claims 1. A sliding passage of a flexible shower hose through the wall of a sanitary vessel, in particular through the rim of a bathtub, comprising a mounting pipe (4) fastened in the opening of the vessel wall (3) by means of a double-sided clamping with a threaded connection of the upper support collar (6) with a fastening nut (8), wherein the mounting pipe (4) has at its upper end a conically open upwards mounting socket (11) for the lower end (10) of the shower head (9) and below it a circumferential seal (12) coaxial with the mounting socket (11) of the outer surface of the shower hose (2) and a centring pipe (18), characterized in that the circumferential seal (12) is built directly into the bottom of the mounting socket (11) and is constituted by: - a passage opening (13) of the shower hose (2) having a truncated cone profile, with its smaller base directed upwards and whose upper diameter (D2) between the edges rounded by a radius (r) is smaller by 1 to 3% than the outer diameter (D3) of the shower hose (2), - a conical-flange ring seal (14) inserted from below into the passage opening (13) and whose flange is supported by a washer (15), and - a ring-shaped pressure nut (16), which is connected to the mounting pipe (4) by means of an internal thread. 2. A culvert according to claim 1, characterized in that the lower end of the assembly pipe (4) is connected to a guide nut (17) having a downwardly protruding pipe (18) centring the coaxiality of the shower hose (2) with the mounting socket (11). 3. A culvert according to claim 1, characterized in that an outflow groove (23) is made on the conical side surface of the mounting socket (11) from the bottom to its upper surface. 4. A culvert according to claim 1, characterized in that the support collar (6) is connected to the assembly pipe (4) by a threaded connection with an external diameter (D1) smaller than the diameter of the opening (D) in the wall of the vessel (3), and the mounting socket (11) has at least two teeth (24) cut out on its front surface for a claw wrench (22) and is connected by a thread to the inner surface of the assembly pipe (4).