ES1069889U - Accessory for quick coupling of pipes (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Accessory for quick coupling of tubes, which is applicable both in those systems whose unión is made by pressure on the basis of a bushing and a holder holder of this, and in the system whose unión is effected by sliding on the basis of a bushing and a toothed ring, including in both cases a tubular element called a nipple mounted concentrically to the bushing in both systems and which will be fixed to the bushing of the sliding connection system or to the bushing of the pressure connection system, leaving the pipe to be joined or coupled between the bushing and said nipple, retained in the pressure system by the pressing performed by a jaw on the outer bushing and in the other case by a toothed ring located annularly inside the bushing, is characterized in that the tubular body constituting the teat presents in proximity to its posterior end, highlighted annularly, eyelashes in circumfeel disposition renal, between which are determined spaces for passage of counterparts provided for that purpose in the cap holder of the system of unión by pressure or in the cap of the system of unión by sliding, so that by rotating one element with respect to the other the counterweights are located behind the tabs of the teat, establishing the fixation of said elements, cap and teat in one case and cap and teat in the other. (Machine-translation by Google Translate, not legally binding)

Description

Accessory for quick coupling of tubes.

Object of the invention

The present invention relates to an accessory for quick coupling of tubes, whose obvious purpose is to serve as a means to couple, with or without the collaboration of a jaw tool, tubes intended for the circulation of fluids, mainly applicable in the plumbing sector, heating, gas, air conditioning, etc.

The object of the invention is to achieve greater efficiency, together with greater simplicity, in the operation of coupling between the fitting and a tube, besides being versatile for allowing its application in both the systems coupling known as "push-fit", as in  known as "press-fit", that is, slip fit and snap fit, respectively.

Background of the invention

Two different systems of coupling between pipes and accessories for plumbing, heating and others, one of whose systems is known as "push-fit", where the coupling and fixing is done by simple sliding of the tube inside of the accessory. The other system is known as "press-fit" in which anchoring and fixing are carried out by external pressure with a tool or jaw.

In either case there is an element inside known as teat, which is tubular, and on it adjusts the tube, and another external element acting as a fixed bushing to the nipple, determining between both elements an axial passage and concentric in which it is precisely the tube section that is intends to couple.

Well, in the system "push-fit" the cap is complemented by a serrated inner ring by means of which the own one is realized fixation or immobilization of the tube attached to the accessory, without need of any tools while in the system "press-fit", besides being the cap different, this is complemented with a sleeve holder for fixing of the bushing, being necessary to exert an external pressure on said bushing, by means of an appropriate tool or jaw, for establish the fixation or anchoring of the tube against the nipple.

Each of said two coupling systems you must use a certain nipple, since the same nipple for both systems, which undoubtedly implies a economic cost of manufacturing, a greater stockage of parts, a greater discomfort and discomfort for the operators who must associate the nipple to its respective concrete system, etc.

Description of the invention

The accessory that is recommended has been conceived to solve the problem described above, and to get other advantages and benefits that will be exhibited throughout of this description.

More specifically, the accessory of the invention,  comprising a nipple and a cap as basic elements, with the holder in one case and the ring in another, presents the particularity that the teat itself and constituted by a tubular body with annular toothed surface, is provided with proximity to its rear end of disposable tabs annul, angularly equidistant from each other, which constitute the fastening means for the corresponding bushing in the case of "push-fit" system and for the holder in the case of the "press-fit" system.

That fixation or interlocking is established by means of counter-tabs provided for this purpose in the bushing or where appropriate in the holder, counter tabs that initially are interns between the tabs of the nipple, so that when those reach the end of it, fix an element with respect to another and thus achieve retention or fixation between the two, that is between the nipple and the sleeve holder or, where appropriate, the sleeve, that the tabs will be interlocked between the tabs of the nipple and flange of the rear end of this.

In addition, the teat presents precisely in correspondence with the internal part of said flange later, a section lowered in ramp, finished in a recess, of so that a projection provided for that purpose in the bushing of the "push-fit" system or system bushing "press-fit", is placed on the beginning of the recess and by turning it the projection will slide along the ramp of the recess until reaching the recessed, and thus remain locked the bushing or bushing.

That is, that recess constitutes a universality characteristic since it allows replacing in any time the system cap "push-fit" through the system sleeve holder "press-fit", and thus adapt to one or the other solution.

Finally say that the nipple includes three O-rings, instead of the two that conventionally incorporates, allowing the use of the accessory with multiple types of jaws, so that the third joint ensures provided that before any pressure there will be two joints working.

In addition to the advantages and benefits referred to of the accessory compared to conventional ones, you also get a greater tensile strength, and must differentiate between the two commented systems:

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At case of the "press-fit" system will only have to resist traction during assembly, since once the Traction is supported by the pressure between tube and fitting. For withstand that effort, some of them are provided in the carrier sawtooth edges that will perfectly withstand the traction.

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At case of the "push-fit" system the accessory will have that to withstand a great force of traction, being the tube subject by one or more toothed rings housed inside the cap, instead of using only one as it happens conventionally.

Description of the drawings

To complement the description that then it will be done and in order to help a better understanding of the features of the invention, according to a preferred example of practical realization thereof, is accompanied as an integral part of that description, a set of drawings in where illustrative and not limiting, it has been represented the next:

Figure 1.- Shows a representation according to a perspective of the tubular body constituting the nipple as fundamental element of the accessory of the invention.

Figure 2.- Shows a perspective view of an attachment for the joint system "push-fit" with the nipple of the figure previous.

Figure 3.- Shows a perspective view with longitudinal section of the attachment for the joint system "press-fit" with the nipple of figure 1.

Figure 4.- Shows a perspective view and in explosion of the bushing and bushing of the union system "press-fit", showing the counter-tabs of the sleeve holder.

Figures 5 and 6.- They show paths seen in side elevation of the initial and final projection anchor shape of a union system sleeve holder "press-fit" on the recess recess in ramp corresponding to the nipple of figure 1.

Figure 7.- Shows a sectional view longitudinal connection of a tube with the fitting of the invention corresponding to the system "press-fit"

Figure 8.- Shows a sectional view longitudinal connection of a tube with the accessory of the invention corresponding to the "push-fit" system.

Preferred Embodiment of the Invention

As can be seen in the referred figures, and specifically in figure 1, the nipple (1) of the accessory of the invention is constituted by a tubular body opened by both ends, with its toothed lateral surface (2) annularly, presenting at its rear end a flange (3) of remarkable width and prior to it some tabs (4) between which respective spaces are determined (5).

In addition, on the inside of the flange (3) and affecting a section thereof, a ramp rebate is planned (6) ending in a recess (7) with the function below It will be exposed.

Said nipple (1), to constitute the accessory proper, it will be complemented with a cap (8) in the case that applies to joint systems type "press-fit", and with a bushing (8 ') in the case that is applied to the joint system "push-fit", complementing in the first case with a bushing (9) for fixing the bushing (8), and in the second case with a toothed ring (10) located annularly in the inside of the bushing itself (8 ') for fixing the tube itself coupled.

The fixing of the sleeve holder (9), and where appropriate of the bushing (8 '), is carried out by means of counter-tabs (11) provided in one or the other (see these counter-tabs in the cap holder shown in figure 4), so that initially these countertops (11) face and pass through the spaces (5) established in the tabs (4) of the nipple (1), then turn slightly and place the tabs (11) behind the tabs (4), thus retaining the bushing (9) or in its case the bushing (8 ') over the nipple (1).

In addition, on the flange (6) of such a nipple (1) places a projection (12) belonging to the bushing (9) or the bushing (8 '), sliding in turn along the ramp that establishes said recess (6), until the projection (12) reaches the recess (7) to stay the bushing (9) or, if applicable, the bushing (8 ') of one or the other system, thereby enabling the exchange from one element to another and thus adapt the accessory to any of the solutions or systems referred to.

The union or coupling of a tube (13), in the application of the accessory to the system "press-fit", as seen in figure 7, is carried out by inserting the tube (13) between the bushing (8) and the nipple (1), fixing the bushing (8) using the bushing holder (9), in accordance with the interlocking already referred, so that once assembled by pressing the bushing (8) using a appropriate tool or jaw, establishing the sealing of the union between the tube (13) and nipple (1) by the pressure transmitted from the bushing (8) by pressing the tube (13).

Said bushing (8) will preferably be stainless steel and the bushing (9) will be materialized in a plastic ring, so that it also fixes the bushing (8) instead, it serves as a guide when placing the jaw of squeeze or press.

The union or coupling of the tube (13) in the application of the attachment to the joint system "push-fit", as seen in figure 8, is effect by sliding introduction of the tube (13) between the bushing (8 ') and the nipple (1), with the fixation between these two components in the manner already described, so that in this case they are not needed pressing jaws, since the fixing of the tube (13) is carried out by one or two toothed rings (10) located inside of the bushing (8 '), specifically in the intersection zone intermediate between the two parts that are established in such a bushing (8 '), which allow disassembly after installation.

The bushing (8 ') can be made of plastic or metallic, being affected by holes (not shown) for visual check of the location of the tube (13) at the time of coupling or installation. In addition, said bushing (8 ') may Be determined by one or more parties.

On the other hand, the ring or toothed rings (10) they will be preferably stainless steel and their function is to hold the tube (13) and prevent the accessory from coming out, with the particularity that the teeth of the rings (10) will be located preferably to the tresbolillo to exert a grip on the whole perimeter of the tube (13).

Finally, say that about the nipple (1) have provided with three o-rings (14) that ensure always the work of at least two of them, before any type of pressure.

Claims (4)

l. Accessory for quick coupling of tubes, which is applicable both in those systems whose connection is made by pressure based on a bushing and a sleeve holder, as in the system whose connection is made by sliding based on a bushing and a toothed ring, including in both cases a tubular element called a nipple concentrically mounted to the bushing in both systems and which will be fixed to the bushing of the sliding joint system or to the bushing of the pressure joining system, the tube being joined or coupled between the bushing and said nipple, retained in the pressure system by the pressing made by means of a jaw on the outer bushing and in the other case by a ring ring located annularly inside the bushing, is characterized in that the tubular body constituting the teat has in proximity to its rear end, annularly highlighted, eyelashes in circumference arrangement) , between which spaces for the passage of countertops provided for this purpose are determined in the bushing of the pressure joint system or in the bushing of the sliding joint system, so that by turning one element with respect to the other the counter-tabs are located by behind the tabs of the nipple, establishing the fixation between said elements, sleeve holder and nipple in one case and sleeve and nipple in the other. 2. Accessory for quick coupling of tubes, according to claim 1, characterized in that the internal part of the annular and posterior projection of the nipple has a ramp recess affecting a circumference section) of the projection itself, said recess ending in a recess for interlocking a projection provided for this purpose in the sleeve holder of the pressure joint system or in the end of the sleeve corresponding to the sliding joint system. 3. Accessory for quick coupling of tubes, according to previous claims, characterized in that three sealing O-rings are annularly provided on the lateral surface of the nipple which, in the pressing operation of the outer sleeve in the pressure joint system, ensures the work of at least two of them. 4. Accessory for quick coupling of pipes, according to claims 1 and 2, characterized in that the bushing of the sliding joint system is determined by one or more parts at the intersection of which at least one toothed ring is mounted which ensures the retention of the tube, even in case of being subjected to high pressures.