Patent Application
20080131231
The present invention relates to a fastener for a faucet according to the preamble of claim 1.
Various number of faucets, particularly water faucets, are known from prior art. Faucets utilizing both hot and cold water of an endless number of different designs, and also different variants of faucets used in connection with water purification devices providing cold water of high purity.
A general problem with faucet devices according to the prior art is the installation process. In a traditional installation of a water faucet device the problem lies in attaching the faucet to a sink unit or the like. The problem relates to the fact that, after having drilled a hole in the sink unit, the faucet must be fastened by means of a screw nut which is mounted from underneath. The threaded connection pipe of the faucet is introduced into the hole in the sink unit and then a screw nut is supposed to be screwed on from underneath at the same time as it is necessary to hold the faucet in place on the upper side in order to prevent the faucet from turning and end up in an undesired position. The fact that part of the attachment has to be done from underneath the sink unit, where usually the sink is protruding making it very narrow and consequently offering very little space to the installer, makes the working position very uncomfortable. The installer has to lie on the back in there with the arms stretched upwardly trying to pull the screw nut in a narrow cavity, which is ergonomically bad, and the risk for injuries is apparent. It is further impossible to alone hold the faucet on the sink unit at the same time as pulling the screw nut from underneath. Consequently this has to be done either by pulling and releasing a number of times before the faucet is fastened with the correct force and points in the correct direction, or by being two persons performing the task. The task is thus quite complicated, usually requiring a professional plumber, or at least a quite handy person.
An object of the present invention is to provide a fastener which simplifies installation of a faucet device.
These and other objects, apparent from the following description, are achieved by a fastener which is of the type stated by way of introduction and which in addition exhibits the features recited in the characterising clause of the appended claim 1. Preferred embodiments of the inventive fastener are defined in appended subclaims 2-9.
By having a fastener comprising a guide sleeve arranged to be introduced in said hole from the faucet side of the support surface, and comprising stop means arranged to co-act with the support surface, and an internally threaded member arranged to be introduced into and guided by said sleeve and to receive the externally threaded pipe, said internally threaded member comprising snap means arranged to snap out on said opposite side of the support surface when fastening the faucet, the installation of a faucet device is simplified in that the installation can be done from the faucet side alone. The installer does not have to crawl under the faucet support surface, minimizing the risk for injuries. It is further easier to direct the position of the faucet housing as there is no need to do this from both the faucet side and the opposite side of the support surface. Further the installation can be done in much less time and with much less effort. The likelihood of a layman being able to perform the installation is highly increased.
A better understanding of the present invention will be had upon the reference to the following detailed description when read in conjunction with the accompanying drawings, wherein like reference characters refer to like parts throughout the several views, and in which:
The invention is intended to be used for faucets having an axially extending externally threaded water connection pipe, which today exist on all faucets.
The orientation of the main axis of the fastener is assumed to be vertical, i.e. it is assumed that the faucet/spout is intended to be vertically mounted, but other orientations are not excluded.
The guide sleeve 20 has an elongated cylindrical shape having a substantially circular hole 22 in the axial direction thereof, having a blocking surface 23 at the end 24 opposite to the opening end 25 for preventing insertion past that end 24. The opening end 25 has a stop member 26, preferably a flange 26 surrounding the hole 22 for supporting the fastener when introduced in a hole in e.g. a sink unit. The guide sleeve 20 comprises longitudinal slots 28, of the same number as the snap members 16, i.e. preferably four. Each slot 28 is arranged to receive a corresponding snap member 16. The snap ring 10 is arranged and dimensioned to fit in the hole 22 of the guide sleeve 20 and is further intended to be inserted through the opening end 25 of the guide sleeve 20, with the internally threaded main body 12 entering first. The resilient snap members 16 are arranged to fit in the slots 28 when the snap ring 10 is introduced in the opening 25. The slots 28 are arranged such that when the snap members 16 are slid passed the flange 26 they snap out through the slots 28. The slots 28 are further arranged such that the snap ring 10 may slide freely between the flange 26 and the blocking surface 23.
The rubber packing (not shown) is intended to cover the flange 26, for protection against wear and to increase friction.
As mentioned above the fastener 1 according to the present invention is intended to be used for faucets having an axially extending externally threaded water connection pipe. The thread present internally in the main body 12 of the snap ring 10 corresponds to the thread present at the water connection pipe 40 of the faucet 50, which is intended to be screwed into the same. The working procedure for fastening a faucet device 50 on a support surface 30 by means of the present invention is explained below and shown in
Firstly a suitable hole 32 is drilled in the support surface 30, which could be a sink unit or the like. The hole is dimensioned such as to receive the elongated cylindrical portion 27 of the guide sleeve 20 but not allowing the flange 26 of the guide sleeve 20 there through, i.e. having a diameter slightly larger than the diameter of the cylindrical portion 27, but smaller than the diameter of the flange 26.
The snap ring 10 is introduced in the guide sleeve 20 such that the snap members 16 snap through the corresponding slots 28 as explained above. The flange 26 is covered with the rubber packing. The fastener 1 is then introduced into the hole 32 in the support surface 30 from the faucet side 52 until it is stopped by the flange 26 which functions as a support against the support surface 30. As the fastener 1 is introduced in the hole 32 the snap ring 10 remains in the level of the opening 25, i.e. slides along the slots 28, and the snap members 16 are flexed inwardly as the flange 26 reaches the support surface 30. The snap ring 10 is thus biased in the opening of the hole.
The externally threaded water connection pipe 40 of the faucet 50 is then introduced through the opening 25 and into the snap ring 10. The resistance from the biasing force of the snap members 16 against the wall of the hole 22, and the slots 28 in which the snap members 16 are located may be enough to allow connection between the pipe 40 and the snap ring 10 such that the externals threads of the pipe 40 are treaded in the internal threads of the snap ring 10. Would the snap ring 10 be pushed through the opening 25 and slide downwardly in the slots 28 prior to this connection it will come to a halt at the blocking surface 23 of the guide sleeve 20, and the thread connection will be made at that position instead. Whether the snap members snap out prior to co-action between the internally threaded element 10 and the externally threaded pipe 40 may depend on the thickness of the support surface 30, i.e. it is more likely that the snap members snap out when introduced through a hole in a thin support surface 30. It however does not influence the fastening procedure.
The snap ring 10 is anyway pushed through the hole to the opposite side of the faucet side such that the snap member 16 snap out through the slots 28. The water connection pipe 40 is threaded into the snap ring 10 by turning the faucet 50 about its own vertical axis. When a threaded connection is made the faucet 50 is pulled upwardly such that the elastomer friction surfaces 18 of the snap members 16 are brought in contact with the surface on the side 54 opposite to the faucet side 52 of the support surface and thereby creates friction. In this position the faucet 50 is continued to be pulled about its axis such that the surface 55 of the faucet housing 56 facing the faucet side 52 of the support surface 30 is brought in contact with the support surface 30, at which moment the further pulling is performed until the surface 55 of the faucet housing 56 fits tightly against the support surface 30. The position, i.e. direction, of the faucet 50 is easily done by directing the guide sleeve 20 prior to pulling the faucet 50.
In this way the faucet can be mounted on a support surface, e.g. a sink unit, without having had to work under the support surface.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
This application is a nationalization under 35 U.S.C. 371 of PCT/SE2006/050009, filed Feb. 14, 2006 and published as WO 2006/091171 A1 on Aug. 31, 2006, which claimed priority under 35 U.S.C. 119 to Sweden Patent Application Serial No. 0500437-9, filed Feb. 25, 2005: and under 35 U.S.C. 119(e) to U.S. Provisional Patent Application Ser. No. 60/593,930, filed Feb. 25, 2005, which applications and publication are incorporated herein by reference and made a part hereof.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/SE06/50009 | 2/14/2006 | WO | 00 | 12/19/2007 |
