KR0169105B1 - Clamp coupler - Google Patents

Abstract

Included connections are made to serve as a tube joint sleeve in a two-part metal clamp coupler for polymer tubes and hoses, which are plug portions with circumferential webs to be inserted into the tube ends. There is this. The clamp coupler also includes a sliding sleeve that is axially movable in the tube axis, which can be pushed over the end of the inserted tube, forming a clamping joint. A feature of the present invention is that the rib 16 facing the flange neck 110 protrudes above the other ribs 12, 13, 14, 15 by height H, and the ribs 12, 13, 14, 15 side. A stop face for the end face 21 of the hose 2 which is pushed up with the outer face 161 facing to the side and the inner inner face 162 and the outer face 113 of the rib 16, the flange The inner surface 111 of the neck 110, the free end 41 in contact with the flange neck 110 in the movable sleeve 4, the receiving chamber 3 for the tube wall material that is compressed when the movable sleeve 4 is pressed down. ) To form.

Description

Clamp coupler

1 is a partial cross-sectional view showing a state in which a hose is inserted in the first embodiment of the present invention.

1A is a view showing a state in which the moving sleeve is partially pushed down in the embodiment.

FIG. 1B is a view showing a state in which the movable sleeve is fully pushed down in the embodiment. FIG.

2 is a partial sectional view showing a state where a hose is inserted in a second embodiment of the present invention.

2A is a view showing a state in which the moving sleeve is partially pressed down in the embodiment.

2B is a view showing a state in which the movable sleeve is fully pressed down in the embodiment.

* Explanation of symbols for main parts of the drawings

2: pipe or hose 3: storage room

4: moving sleeve 11: insertion area

12,13,14,15,16 Rib 110 Flange

111: inner section 113: outer peripheral surface

H: height

[Industrial use]

The present invention is a two-piece metal clamp coupler for a tube or hose (hereinafter referred to simply as a hose) made of a polymer material, provided with a connecting piece formed as a tube sleeve and a movable sleeve axially movable with respect to the tube sleeve. The connecting piece has an insertion region insertable into the end of the hose, and a rib in the circumferential direction is provided in the insertion region, and the movable sleeve is an insertion region into which the end of the hose is fitted while generating a clamping engagement. It's about being in a portable format.

[Prior art]

According to the specification of the Republic of Germany Patent No. 3608843, a clamping method of this kind is disclosed for a hose made of a polymeric material. According to this coupling method, an insertion region having ribs on the outer circumferential surface of the cylindrical connecting piece formed as the tube sleeve is inserted into the end of the hose, and then a cylindrical moving sleeve movable axially with respect to the tube sleeve is provided with a clamp coupling. It is pressed down into an insertion area inserted into the end of the hose to form. According to this known technique, the outer periphery of the hose end is expanded before the hose is inserted into the insertion region. Thus, in addition to the compressive forces created by the moving sleeve, restoring forces of the expanded polymeric material additionally occur for the maintenance of the hose ends on the insertion zone.

According to the Federal Republic of Germany Patent Specification 128216, a clamping method for a hose made of a polymeric material is disclosed. According to this coupling method, the insertion region is inserted into the end of the hose which is not extended.

Insertion is particularly simple by sharpening the end of the tube sleeve in the insertion direction and by providing an annular or bevel portion in the circumferential rib.

The circumferential ribs disclosed in this known art all have the same height. The groove between the circumferential ribs is shallow and wide when the insertion region is inserted into the hose made of polymer so that the hose can bend toward the groove bottom before the next circumferential rib due to the elasticity of the material. .

After insertion of the insertion region, the moving sleeve is press-fitted on the hose end in the direction opposite to the insertion direction of the insertion region.

Since the inner circumference of the movable sleeve is formed smaller than the outer circumference of the inserted hose end, the excess of material not received by the groove of the tube sleeve when the movable sleeve is pressed is extruded, ie pushed toward the free end of the hose. I'm going. The excess of material continues until the moving sleeve reaches its end position, at which end it becomes an annular buildup in front of the free end of the moving sleeve. If unsuitable due to an error between the hose end of the polymeric material and the metal part, the hose end wall material is significantly pushed out by the pressing of the movable sleeve over a predetermined vector of the metal insertion region by the above-described phenomenon, In many respects, the opposite vector does not produce any such extrusion, or only a small amount. In the case where the joining of the individual constituent members has to be done with a large error, this disadvantageous phenomenon of the known art is sometimes seen because this kind of clamp joining is used.

This phenomenon is not only a cosmetic defect, but the accumulation of such material in the compression zone forms an attack surface of external influence that the clamp coupling impairs the sealability.

[Problem of invention]

It is an object of the present invention to provide a clamp coupler of the type mentioned at the outset which avoids the above disadvantageous effects of the known art and which not only has a good appearance but also generates a complete bond with respect to the technical structure.

[Means for solving the problem]

The gist of the present invention for solving the above problems is that the rib in the circumferential direction closest to the flange of the connecting piece is formed as high as the height H with respect to the rib in the other main direction, and the outer end face facing the other rib is fitted. It is formed as a stopper for the end face of the inserted hose, and the inner end face of the rib, the outer circumferential face of the insertion region, the inner end face of the flange, and the free end of the movable sleeve abutting the inner end face are pushed in when the movable sleeve is pressed down. It is forming a chamber for outgoing hose material.

[Operation and Effects of the Present Invention]

The effect of the present invention is that the receiving chamber formed in the flange is completely closed to the outside. In this case, when the error is large, the annular material accumulation that is pushed out unevenly is hidden, so that the appearance is good and the material accumulation is somewhat accepted depending on the size of the error. In short, this chamber holds the hose end wall material pushed out in an uneven amount depending on the magnitude of the error by the pressing of the moving sleeve.

Another advantage of the present invention is that the termination position of the attachment is defined by pushing the moving sleeve until it abuts against the flange. In addition, according to the present invention, since the excess of the material enters into the storage chamber, the deformation action in the excess of the material is reduced. Therefore, the force for pressing down the moving sleeve can be added to a size that can be calculated in advance, which is very important for the structure and design of the pressing tool. Moreover, according to this invention, the tolerance of the thickness of the hose connected is expanded.

The storage chamber has a high rib having an inner end face, which is influenced by the inner end face of the flange and in cooperation with the outer circumferential surface of the insertion area located therebetween, thereby limiting the storage chamber on the insertion area side. The storage chamber is in this case enlarged by a groove in the insertion zone. The receiving volume is defined in this area by the height of the high rib height and the gap between the inner end face of the flange.

In another embodiment, high ribs reach the inner end face of the flange parallel to the axis of the insertion region. This configuration is effective when the manufacturing error of the hose to be joined can be narrowed. This is because in this case, since there is no groove in the insertion region, it is formed only by the outer circumferential surface of the rib having a high volume of the storage chamber, the inner circumferential surface of the movable sleeve, and the inner end face of the flange.

EXAMPLE

FIG. 1 shows the insertion region 11 of the connecting piece and the pipe or hose 2 inserted therein. (Hereinafter referred to only as hose 2). Before insertion of the hose 2, the hose 2 extends on the outer circumferential surface of the insertion region, so that the insertion process is performed without requiring significant force.

The insertion region of the hose 2 is guided by the ribs 12, 13, 14, 15 during the insertion process and abuts the high rib 16 in the region below it. The grooves 121, 131, 141, 151 formed between the ribs 12, 13, 14, 15 are covered by the insertion region of the hose 2 in this embodiment. The high rib 16 forms a stopper for the end face 21 of the hose 2 to be inserted by it if it is as high as the height H relative to the height of the other ribs 12, 13, 14, 15.

The inner end face 162 of the high rib 16 and the inner end face 111 of the flange 110 form the lower part of the storage chamber 3 in this embodiment.

In FIG. 1 a the moving sleeve 4 is partially pressed while compressing this region on the insertion region of the hose 2. In this depressing process, the grooves 121, 131 between the ribs 12, 13, 14 are filled by the material of the wall of the hose 2. As can be seen from this figure, in the region of the free end 41 of the moving sleeve 4 by the pressing process, the accumulation 21 of the material of the wall of the hose 2 causes the inner end surface 111 of the flange 110 to be removed. Pushed towards.

FIG. 1B shows a state in which the mobile sleeve 4 is fully pressed into the insertion region. In this case, the free end 41 of the movable sleeve 4 is pressed against the inner end surface 111 of the flange 110. At that time, the free end 41 of the movable sleeve 4, the inner end face 111 of the flange 110, the outer circumferential face 113 of the insertion region 11, and the inner end face 162 of the high rib 16 are provided. In between is formed a storage chamber 3 for the accumulation of the material of the wall of the hose 2.

As a result, the metal clamp coupling of the present invention is generated.

As can be seen in the figure, a portion 22 of the material of the hose wall press-fitted into the receiving chamber 3 is located between the inner end face 111 of the flange 110 and the inner end face 162 of the high rib 16. Invading the realm. The other part 23 penetrates into the partial region limited by the free end 41 of the moving sleeve 4 and the inner end face of the flange 110.

This results in the best closure for the metal clamp coupler 1 at the final stage of the pressing down of the moving sleeve 4 onto the wall of the hose 2 inserted on the insertion region 11. This best closure is excellent in appearance and also in a fixed mount which prevents the flow of liquid or gas in the hose 2 in the interstitial zone.

In the embodiment shown in FIG. 2, the height H of the high rib 16 has reached the inner end surface 111 of the flange 110 parallel to the axis of the insertion region. As a result, the storage chamber 3 is as small as the volume formed by the outer end face of the flange, the outer circumferential face of the insertion region 11 and the inner end face of the rib 16 as compared with the embodiment of FIG. Also in this embodiment, the outer end face 161 of the high rib 16 acts as a stopper for the end face 21 of the insertion region of the hose 2.

FIG. 2a shows an intermediate position corresponding to FIG. 1a of the moving sleeve.

2b shows a state in which the movable sleeve 4 is fully pressed down. Also in this case, the free end 41 of the movable sleeve 4 is pressed against the inner end surface 111 of the flange 110. The storage chamber 3 is formed by the free end 41 of the movable sleeve 4, the inner end surface 110 of the flange 110, and the outer circumferential surface 114 of the high rib 16. In this storage chamber, the material of the hose wall pushed out by pushing down the moving sleeve intrudes.

This embodiment is effective when the manufacturing error of the hose 2 is small.

Claims (2)

A two-piece metal clamp coupler for tubes and hoses made of polymer, comprising a connecting piece formed as a tube sleeve and a movable sleeve axially movable relative to the tube sleeve, the connecting piece being insertable into the tube end. An insertion zone, the insertion zone being provided with a circumferential rib, the movable sleeve being connected to the clamp engagement member of the type that is movable to the insertion zone into which the end of the tube or hose is inserted while generating a clamp engagement; In this case, the rib 16 in the circumferential direction closest to the flange 110 of the connecting piece projects upwards by the height H with respect to the ribs 12, 13, 14, and 15 in the other circumferential direction, and the other rib 12 The outer end face 161 facing the ends 13, 14 and 15 is formed as a stopper for the end face 21 of the pipe or hose 2 to which the tube 16 is fitted. The end face 162, the outer circumferential surface 113 of the insertion region, the inner end surface 111 of the flange 110, and the free end 41 of the movable sleeve 4 abutting the inner end surface 111 are movable sleeves ( Clamp coupler, characterized in that it forms a receiving chamber 3 for the tubing material or the hose material which is extruded when 4) is pressed down. A two-piece metal clamp coupler for a tube or hose made of a polymer material, provided with a connecting piece formed as a tube sleeve and a movable sleeve axially movable relative to the tube sleeve, the connecting piece being inserted into the tube end. And a circumferential rib in the insertion region, the movable sleeve being movable to the insertion region into which the end of the tube or hose is inserted while generating a clamp engagement. In the circumferential rib 16 closest to the flange 110 of the connecting piece, the ribs 12, 13, 14, and 15 are projected upward by the height H with respect to the other circumferential ribs 12, 13, 14 and 15. The outer end face 161 facing 12, 13, 14 and 15 is formed as a stopper for the end face 21 of the pipe or hose 2 to which it is fitted. The height H of 16 extends to the inner end surface 111 of the flange 110 parallel to the axis of the insertion region 11, at the outer surface 114 of the rib 16 and the moving sleeve 4. Clamp coupler, characterized in that the free end (14) in contact with the flange (110) forms a receiving chamber (3) for tubing or hose material which is extruded when the moving sleeve (4) is pressed down.

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