JPH035754Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a connection structure between a shower hose and a metal fitting, and more particularly to a detachable connection structure between a shower head or faucet and a shower hose.

(Prior art) Shower hoses that are connected to water faucets such as hot and cold water mixer faucets via connection fittings are often replaced after about one year of use, not only because they are susceptible to damage but also because of their design. I'm getting used to it. By the way, to connect this shower hose to the faucet side and shower head, fit the hose into a bamboo-shaped nipple while forcing the side end of the hose to expand, and then tighten the hose to the nipple by tightening the tightening ring. fixed,
Such nipples are connected to the shower head and faucet by fitting them into a rotary nut on the shower head side and into a fixing nut on the faucet side with packings or the like interposed therebetween.

The nipple and nut connected to the hose side end are paired to ensure a tight seal, so when replacing the hose, you must replace everything including the nipple and nut. In addition to being very uneconomical, it required troublesome work to assemble the hose and nipple each time it was replaced, resulting in a lack of workability.

(Problems to be Solved by the Invention) In view of the conventional circumstances as described above, the object of the present invention is to provide a connecting fitting that allows the hose to be easily replaced.

(Means for Solving the Problems) The technical means of the present invention for solving the above problems is to form an annular locking groove on the inner surface of the nut that connects to the shower head or faucet, A radially retractable snap collar with a protruding latching protrusion is fitted and engaged in the latching groove, and on the other hand, a snap collar consisting of an inner and an outer ring is attached to the side end of the hose. The present invention is characterized in that an end processing ring having a protruding engaging protrusion projecting outward in the direction is fitted and fixed, and the engaging protrusion is capable of freely abutting and engaging with the side end of a snap collar inside the nut.

(Function) By the above means, a snap collar and a nut are fitted into the hose in advance, and the hose end is fitted with a snap collar and a nut.
The terminal processing ring having the engaging protrusion protruding outward is fixed by an expansion deforming means, etc., and then the snap collar is slid in the axial direction to fit inside the nut and engage the retaining protrusion. The locking protrusion prevents the snap collar from moving in a direction opposite to the direction of insertion into the nut. Then, when the end treatment ring portion at the hose side end is fitted into the nut, the engaging protrusion of the ring abuts and engages with the side end of the snap collar, completing the assembly of the hose and nut.

To replace the hose, perform the reverse operation to the above-mentioned operation, causing the end treatment ring portion to protrude outward from the nut, and then contracting the snap collar in the radial direction, so that the snap collar is detached from the nut.

(Example) An example of the present invention will be described below based on the drawings. The hose 1 is a synthetic resin hose commonly used today and has a built-in reinforcing braid. A terminal treatment ring 2 is fitted and fixed to the side end of the hose 1, and a hooking protrusion 3 protruding from the side end of the terminal treatment ring 2 is removably attached to the nuts 5, 5'. It abuts and engages with the snap collar 4 to prevent it from coming off in the axial direction.

The end treatment ring 2 at the side end of the hose 1 is composed of an inner ring 2a that fits inside the hose 1, and an outer ring 2b that fits on the outside of the hose 1. is formed with an engaging protrusion 3 projecting outward, and a sealing rubber 6 having a U-shaped cross section is formed between the inner and outer rings 2a and 2b.
Fit the side of hose 1 which is covered with inner ring 2.
A terminal treatment ring 2 is fixed to the side end of the hose 1 by expanding and deforming the hose 1 outward.

The snap collar 4 is formed into a cylindrical shape from a synthetic resin material, and a part of its peripheral wall is cut off along the axis so that it can freely contract and expand in the radial direction. The cutout 7 is cut out, and the outer circumferential surface of each piece divided by the cutout 7 is provided with a sawtooth-shaped latch protrusion 8 that protrudes from the nut 5.
It is designed to fit inside and lock. The circumferential cut 7 in the snap collar 4 allows for smoother elastic deformation of the snap collar 4 toward the center when it is pushed into the nuts 5, 5'.

The nuts 5, 5' have different external shapes depending on the connection with the shower head 9 or faucet (not shown), but inside the nuts 5 and 5' there is a hooking protrusion 8 of the snap collar 4.
A latching groove 10 into which the holder is fitted and latched is formed in an annular shape, and a threaded thread 11 is formed on the inner surface of the other side. In the figure, reference numeral 12 denotes a rubber M ring that maintains sealing performance inside the nut 5 on the side of the shower head 9, and this M ring 12 is attached to the engaging flange 3 of the end treatment ring 2. Reference numeral 13 denotes a rubber or asbestos packing that maintains the sealing performance inside the nut 5' which connects the faucet to the faucet.

To explain how to assemble the above structure, first, the snap collar 4 and the nut 5 or 5' are fitted to the sides of the hose 1, and the hose side end that passes through the snap collar 4 and the nut 5 or 5' is cut into a cross section. The hose 1 is covered with a U-shaped seal rubber 6, and the inner ring 2a and the outer ring 2b are respectively fitted to clamp the hose side end, and then the inner ring 2a is deformed to expand radially outward. Terminal processing ring 2 on the side edge
to fix. After that, the snap collar 4 is slid and inserted into the nut 5 or 5' fitted to the hose 1, and the latch protrusion 8 is fitted into the latch groove 10 to latch it, and then the hose 1 is inserted. Pull the end treatment ring 2 in the opposite direction to the insertion direction of the snap collar 4.
is inserted into the snap collar 4, and the engaging protrusion 3 of the terminal treatment ring 2 is brought into contact with the end surface of the snap collar 4 to prevent the hose 1 from coming off.The assembly of the nut 5 or 5' and the hose 1 is completed. Screw the shower head 9 onto the nut 5, and
Complete the installation by screwing it onto the faucet. To remove the hose 1 from the nut 5 or 5', push out the hose 1 so that its end treatment ring 2 protrudes from the thread 11 side of the nut 5 or 5', and then remove the hose 1 from the inner surface of the snap collar 4.
A gap is provided between the snap collar and the outer surface to allow the snap collar to contract in the radial direction, and then the snap collar 4 is contracted so that the locking protrusion 8
is removed from the retaining groove 10, and in this state, the snap collar 4 is removed from the nut 5 by pulling it out toward you, and the engaging protrusion 3 of the end treatment ring 2 of the hose 1 is pulled against the inner surface of the nut 5 or 5'. It no longer gets stuck and can be pulled out from the nut 5 or 5'.

(Effects of the invention) The connection structure between the shower hose and the metal fittings of the present invention is such that an end treatment ring having a hooking ridge is fixed to the side end of the hose, and the hooking edge of the ring can be freely engaged and detached from the nut. Since the hose is attached to and latches onto a snap collar, the hose can be easily attached and detached from the nut by moving the hose in the axial direction relative to the nut, contracting the snap collar in the radial direction, and separating it from the nut. .

That is, the engaging protrusion of the end treatment ring fixed to the side end of the hose comes into contact with the side end of the snap collar fitted and engaged inside the nut, and the hose moves in the direction of coming off from the nut. Therefore, tightening the nut only requires tightening the sealing member interposed between the shower head or the side end of the faucet, so tightening the nut has both a sealing effect and a function of preventing the hose from coming off. Compared to conventional products, the dimensional accuracy is less rough and productivity is higher.

Therefore, it is easy to replace the shower hose due to damage or design issues, and there is no need for fittings such as nipples, which is economical in terms of cost, and the hanger can be attached to the wall. It can easily accommodate rotary nuts of various shapes depending on the relationship.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is an exploded sectional view of the connecting fitting on the shower head side, and FIG. 3 is an exploded sectional view of the connecting fitting on the faucet side. FIG. 4 is a perspective view of the snap collar, and FIGS. 5 to 7 are partially cutaway front views showing the connection procedure. In the diagram, 1: hose, 2: terminal treatment ring, 3:
Engagement protrusion of terminal processing ring, 4: Snap collar, 5, 5': Nut, 8: Engagement protrusion.

Claims (1)

[Scope of utility model registration request] An annular locking groove is formed on the inner surface of the nut that connects to the shower head or faucet, and a radially retractable snap collar with a protruding locking protrusion is fitted into the locking groove. On the other hand, on the side end of the hose, an end treatment ring consisting of an inner and an outer ring, which has a hooking rim that projects radially outward from the side ends of the inner and outer rings, is fitted and fixed, and the hooking rim A connection structure between the shower hose and the metal fittings that can be freely abutted and engaged with the side edge of the snap collar inside the nut.