ES2396880B1 - CLAMP FOR PREMONTAGE. - Google Patents

Abstract

The bracket has a curved outer band (1) connected with a traction mechanism (2) for clamping. A flexible ring section (3) is coupled on an inner side of the outer band. A spring (31) includes an elongated curvature for fastening a flexible hose on a part of a rigid pipe. Wings (4) are provided on sides of the bracket and bent against interior of the bracket. The wings are designed to be deformed on an inner side of the flexible hose. The wings cause relative blocking of the bracket on an end of the flexible hose in a position of preassembly.

Description

CLAMP FOR PREMONTAGE.

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Object of the invention

The present invention relates to a preassembly clamp,

of the type comprising an external clamping strap and a ring portion

interior, carrier of flexible means, to improve compression on the

tubes to fix. This clamp has the particularity of understanding some means

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intended to achieve its positioning and retention in a position of

preassembly on the end of a flexible tube.

Field of application of the invention.

The present invention is applicable in the sector of joining means and

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connection of pipes and pipes, both in industries and in construction.

Background of the invention.

At present it is common for clamps to be used for

fixing the end of a flexible tube over the end of a rigid tube, by

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example in the connection of pipes and fluid tubes.

These clamps generally comprise a curved outer strap

on itself, and associated a traction mechanism for its tightening, being said

mechanism of various natures, such as a screw associated with a rib

oblique on the outer face of said strap, for example.

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In certain cases it is interesting that the clamp also includes

an inner ring portion engaged on the inner face of the outer strap, being

equipped with this inner ring portion with an intermediate spring defining some

longitudinal arcs that exert constant pressure against the use position

The outer strap. These clamps with the flexible ring portion inside

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they are also called constant tension clamps because of the ability to

keep the tightening tension constant and uniform regardless of the

dilation or contraction of the joined tubes due to the effect of temperature.

A case of these clamps is the clamp described by the model

Spanish utility U9802447 by "Clamp arrangement for clamping

firmly a flexible tube on a part of a rigid tube "Rasmussen signature

GmbH, the elastic ring or elastic ring portion presents the spring located at

less in a preponderant proportion within the clamp, not protruding

axially beyond the outer strap, saving space. In addition to the clamp,

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after preliminary assembly and while holding the flexible tube over the tube

rigid, it can slide better, so that the clamping force of the clamp to the

fix the flexible tube on the part of the rigid tube is distributed more evenly

around the perimeter of the flexible tube and also holds it with greater force.

In certain industries such as the automotive industry, the

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use of pre-assembled kits and assemblies of several pieces, in which said

assemblies of parts to be assembled actually constitute a unitary group

prepared and ready to be mounted without the need for additional accessories, with

that the preparation time in its assembly is reduced. So, these kits or sets already

they come with the screws in position or with the clamps placed on the

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duct ends and flexible pipes to connect.

The technical problem of preassembled clamps is that once

placed loosely at the end of a flexible tube, they are enabled

of displacement, being able to move along the tubes, which requires

that the assembler should reposition them in the proper position before proceeding to their

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squeeze, which is a waste of time.

Therefore the technical problem that arises is the development of a

constant tension clamp with suitable properties to facilitate its

preassembly in an area near the end of the corresponding tube and prevent it from

move along the corresponding tube, eliminating wasted time

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unnecessary by the operator in charge of coupling the tubes to be joined and tighten the

corresponding clamp.

Description of the invention

The preassembly clamp, object of this invention, presents

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some technical peculiarities aimed at improving the placement of said

clamp more permanently at the end of a duct,

staying ready for final assembly during the entire handling process.

The clamp is of the type that includes an outer strap

   curved on itself, and associated with a traction mechanism for tightening, and

a flexible ring portion coupled on the inner face of the outer strap, and

equipped with an intermediate spring with longitudinal arches, for the fastening of a

flexible tube on a part of rigid tube.

According to the invention, the clamp comprises in one of its

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lateral fins angled towards the inside of the clamp, intended to be

deformed on the inner side of the flexible tube and to establish the immobilization

relative of the clamp on one of the ends of the hose in one position

Preassembly

Thus, once the clamp is placed over the mouth of the flexible tube, these are bent

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fins towards the inside of the clamp, for example by using a

cone or similar, causing its abatement against the inside of the tube

setting the clamping of the end of the tube against the outer strap of the

clamp.

In this way, the clamp is fixed immovably on the end of the

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flexible tube, in an ideal position for tightening, avoiding the operations of

relocation of the clamp or its supply independently, improving the

process time during manufacturing or installation.

In addition the preassembled clamp does not move during transport

of the tube, or set of pieces in which it is integrated, remaining in a position

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suitable for final tightening.

In one embodiment of the invention, the fins comprise a

first portion extended laterally outward from the strip or ring portion

flexible, a second portion radially angled into the clamp

and a third portion angled in an oblique direction, also towards the inside of the

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clamp; this third portion being the one destined to act on the inner face

of the flexible tube once said fins are deformed conveniently. Said pincer

is produced by bending between the first and second portion of the fin

preferably, although deformation by other points is not ruled out. What's more, the

third portion may have in one embodiment a narrow and topped shape

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in a rounded tongue that facilitates clamping on the material of the flexible tube.

In an embodiment of the invention, the clamp comprises

correspondence with the fins mentioned appendices oriented in

radial direction towards the inside of the clamp and that form some stops

   ! imitators of the penetration of the flexible tube into the clamp during the

preassembly operation of said clamp in the flexible tube.

This stops are formed, in an exemplary embodiment, by

"V" shaped cuts made in the first portion of the fins, being

its function define the position of the end of the flexible tube with respect to the clamp

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ideally to ensure that the fins, when deformed, act on a

certain length of the tube end

It should be mentioned that the lateral fins can be shaped

both in the outer strap and in the flexible ring portion, since in both

positions can be deformed into the clamp to

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immobilize it with respect to the end of the tube.

Description of the figures.

To complement the description that is being made and in order

of facilitating the understanding of the features of the invention, it is accompanied by the

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present descriptive memory a set of drawings in which, for illustrative purposes

and not limiting, the following has been represented:

Figure 1 shows an elevation view of the clamp.

Figure 2 shows a section of the clamp along the plane A-A '

marked in figure 1.

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Figure 3 shows a section of the clamp along the plane B-B '

marked in figure 1.

Figure 4 shows a plan view of the ring portion

flexible

Figure 5 shows a longitudinal section of a flexible tube

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on which the clamp is preassembled.

Preferred Embodiment of the Invention

As can be seen in the referenced figures, the clamp

it comprises an outer strap (1) curved on itself, and associated with a

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traction mechanism (2) for tightening; finding himself mounted on his face

inside a flexible ring portion (3) spring carrier (31), formed by

some arches on its outer convex face.

The flexible ring portion (3) has fins on the sides

   (32) its fastening with respect to the outer strap (1) and for the retention of the spring (31) in the

Mounting position.

The spring (31) is housed between the outer strap (1) and the portion of

flexible ring (3), in an area approximately centered with respect to said portion

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Flexible ring (3) for its support on the inner side of the outer strap (1).

The clamp comprises on one of its sides fins (4)

elongated laterally and radially angled into the clamp

for immobilizing said clamp over the mouth of a flexible tube (T) in the

preassembly In the example shown, said lateral fins (4) are

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defined in the flexible ring portion (3), specifically in an area close to

the ends thereof and on the same side.

In the embodiment shown in Figures 2 and 3 each of these

fins (4) have a first portion (41) extended laterally outwards

of the flexible ring portion (4), a second portion (42) radially bent

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into the clamp and a third portion (43) angled in the direction

oblique, also inward of the clamp.

Figure 5 shows the pre-assembled clamp on the end

of a flexible tube and the third portion (43) of one of the fins acting against the

inner face of a flexible tube, establishing its pre-assembled fixing.

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In the embodiment shown the clamp comprises in

correspondence with the first portion (41) of the fins (4) appendages (44)

defined by two "V" cuts and oriented radially towards the

inside the clamp, said appendages forming stops of

introduction of the flexible tube (T) inside the clamp.

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Once the nature of the invention has been sufficiently described, thus

as an example of preferred embodiment, it is recorded for the appropriate purposes

that the materials, shape, size and arrangement of the elements described may

be modified, as long as this does not imply an alteration of the

   essential features of the invention as claimed below.

Claims (4)

1.-Preassembly clamp, of the type comprising an outer strap (1) curved on itself, and associated with a pulling mechanism (2) for tightening, and a flexible ring portion (3) coupled on the inner face of the outer strap (1), and provided with an intermediate spring (31) with longitudinal arcs, for securing a flexible tube (T) on a rigid tube part, characterized in that said clamp comprises in one of its lateral fins (4) angled towards the inside of the clamp, intended to be deformed on the inner face of the flexible tube (T) and to establish the relative immobilization of 1 Or the clamp on one end of the hose in a pre-assembly position. 2. Clamp according to claim 1, characterized in that the fins (4) comprise a first portion (41) extended laterally with respect to the 15 clamp, a second portion (42) radially oriented towards the inside of the clamp and a third portion (43) angled obliquely towards the inside of the clamp. 3.-Clamp, according to any of the preceding claims, 20 characterized in correspondence with the fins (4) appendages (44) oriented radially towards the inside of the clamp and forming stops imitating the penetration of the flexible tube (T) into the sine of the clamp during the preassembly operation of said clamp on the flexible tube. 4. Clamp, according to any of the preceding claims, characterized in that the fins (4) are defined in the flexible ring portion (3). 5. Clamp according to any of claims 1 to 3, characterized in that the fins (4) are defined in the outer strap (1).