JPH02554Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides for the purpose of fastening the end of a hose or pressure working medium pipe in order to instantly create a clamping joint between the hose or pressure working medium pipe and a connecting pipe of a casing, for example. A clamping body with a slit for holding and a clamping ring which can be implanted on the clamping body and fixes or tightens the end of the inserted conduit or hose cooperate. This invention relates to a unit assembly type parts set for the above purpose.

Various connections for pressure working medium are known which are used in particular to connect flexible pressure working medium pipes to the consumption side, for example the housing of an operating cylinder or a valve housing, or to connect pressure working medium pipes to each other. . Depending on the specific application, these connections can be used, for example, for connections between hoses and threaded connecting pipes of the casing;
90° elbow for connection of two pressure working medium pipes,
It is manufactured as a T-shaped tube, etc.

When actually assembling the pressure working medium piping system,
At the assembly site, it may happen that one type of connector is still available in reserve, but the other type of connector is no longer available. This can be said to be because the assemblers did not prepare enough connections of this type in the workshop, but the piping of the pressure working medium pipes
This also happens when it first becomes clear at the assembly site that it would be advantageous to use a different connection.

In order to order the necessary connectors to the assembly site,
Usually requires significant additional costs. On the other hand, if each assembler were to have a large number of spare connections of all kinds, inventory management would be extremely complex and expensive.

The invention, on the other hand, makes it possible to construct clamping joints for virtually all practical conditions, and to manufacture the parts extremely simply and inexpensively, as well as in the simplest and most timely manner possible. The object of the present invention is to provide a unit assembly type parts set that can be assembled without the need for assembly.

For the above purpose, the novel configuration according to the present invention is as follows. That is, it consists of a plurality of substructure members, namely axial connections, elbow connections and T-connections, which provide a plurality of different pressure medium flow paths and have identically shaped connecting tube sections; The basic structural element and the clamping sleeve are injection molded from plastic as separate parts;
The connecting pipe portion of the basic structure member has a locking means capable of locking the tightening sleeve and an O-ring, and the O-ring is inserted into the step hole of the basic structure member by press fitting, and Even in the unassembled state, it is held in the step hole in an unremovable manner, and the basic structure member and the sleeve are engaged with each other by the solid wall of the fitting hole at the deep inner step of the sleeve. When the O-ring is penetrated by the connecting end of a conduit or hose connected to it, and the O-ring closes the jacket of the connecting end of the conduit or hose by its radially inwardly facing surface. Furthermore, each of the substructure members is provided with locking means of the same type at its ends.

It therefore contains the more or less standardized parts necessary for all types of connections and has only a small number of specialized parts. A unit for forming multiple connectors is therefore provided by the present invention. As for the latter parts, a large number of different types can be provided to the assembler, in which case the assembler can quickly assemble the required type of connection at the site of use. It is easy to assemble, can be manufactured at low cost, and can meet all on-site demands.

According to the invention, it is possible to assemble a large number of different types of connection units with a small number of parts. That is, there is no need to separately prepare special connection units for each application. In the present invention, there are only a few basic structural members that define the direction of flow of the pressure working medium, and these include axial connections extending in the axial direction;
It has the shape of an elbow-type connection body and a T-type connection body. Each of these substructure members is optional and may be provided with several tightening sleeves if necessary. One type of clamping sleeve is sufficient, which can be combined with each of the substructure parts, so that it is possible to bring several substructure parts and create an assembled unit in each case. It is. Thus, various types of connection units can be assembled by means of standard clamping sleeves and the desired number of substructure parts.

The present invention will now be described in detail based on embodiments with reference to the accompanying drawings.

Reference numeral 10 in FIG. 1 designates the entire clamping body consisting of a clamping sleeve 12 made of injection molded plastic and a clamping ring 14, also made of injection molded plastic, movable on the outside of the clamping sleeve 12.

The clamping sleeve 12 has a connecting part 16 with a fitting hole 18 . A locking groove 20 is provided in the peripheral wall of the fitting hole 18 . The innermost part of the fitting hole 18 forms an inward stepped part 22 . A tightening part 24 follows the connecting part 16 . The latter is equipped with an elastic clamping arm 28 having a saw-toothed clamping rib 26 projecting from its inner surface. Between the clamping arms 28 is an axial sleeve 30.
is provided and is separated from the connecting part 16 by a clamping part 2
The end side of 4 is open. An outwardly directed step 32 formed at this end and separated circumferentially by a slot 30 forms a stop for the axial lifting of the clamping ring 14.

The tightening ring 14 is provided with a circumferential annular groove 34 . This annular groove 34 is for facilitating fitting and movement.

To secure the pressure working medium hose in the clamping body 10, move the clamping ring 14 downward to the end of the slit 30, spread the clamping arms 28, and then insert the hose into the clamping part 24. Push it in so that the free end surface of the hose roughly coincides with the end surface of the connecting portion 16.
At this time, the seal on the outer surface of the pressure working medium hose is
This is accomplished by an O-ring gasket as described below. Next, raise the tightening ring 14,
Return to the position shown in Figure 1 again. At this time, the clamping ring 14 presses the clamping arm 28 radially inward again, so that the clamping rib 26 tightly contacts the outside of the pressure working medium hose and prevents it from slipping into the clamping body 10. Fixed to.

The fitting hole 18 is used for connecting the fastening body 10 and various connecting body bodies, as shown in FIGS. 2 to 4.

In FIG. 2, indicated generally at 36 is an axial connection made of injection molded plastic and to which a pressure working medium hose can be connected to a threaded connection.

The connecting body 36 has an annular locking protrusion 40 on its outer surface, a connecting part 38 that can fit into the fitting hole 18 of the tightening body 10, a hexagonal part 42 for applying a spanner, and a threaded connection. It has a threaded portion 44 that connects to the mouth. The connecting portion 38 has a step hole 46 at the upper end, into which the O-ring 48 is inserted with light pressure, so the O-ring 48 will come off and be lost even if the main body 36 is not yet assembled. Never.

When the connecting portion 16 of the tightening body 10 is fitted into the connecting portion 38 of the connecting body 36 while applying force, the locking protrusion 40 locks in the locking groove 20 and the O-ring 48
comes into contact with the inward step portion 22. At the same time that a mechanical connection is created in this way, the pressure working medium channel defined by the clamping body 10 and the connecting body 36 is sealed off on the outside.

Then, as already mentioned above, when the pressure working medium hose is pushed into the clamping body 10, the outer surface of the pressure working medium hose immediately contacts the inside of the O-ring 48 and is sealed.

FIG. 3 shows a connection 50, also injection molded plastic, having a 90 DEG elbow shape. The connecting body 50 has two connecting parts 52. Both are formed similarly to the connecting portion 38 of the connecting body 36 detailed above. Between the two connecting parts 52 there is a bend 54 . On the outside of the two connecting parts 52,
The two clamping bodies 10 of FIG. 1 can then be fitted together and the pressure working medium hole can then be fixed in a watertight manner as described above. In that case, the pressure working medium hoses are connected at right angles to each other.

FIG. 4 shows a T-connection 56. FIG. This connecting body 56, also injection molded from plastic, has three connecting parts 58 formed similarly to the connecting parts 38 of the connecting body 36 described above, and a supporting T-shaped part 60. Furthermore, two support sleeves 62 are provided protruding from the T-shaped portion 60 . The support sleeve 62 is provided with bolt holes 64 for fixing.

FIG. 5a shows the clamping body 10 and the connecting bodies 36, 5.
Using a unit containing 0.56, the connection body 56 is
A T-shaped connecting member 66 made by fitting three fastening bodies 10 is shown.

Further, FIG. 5b shows a threaded connection body 67 assembled using the connection body 30 and the fastening body 10.

As is already evident in these few examples, it is possible to use a unit containing the clamping body 10, the connecting bodies 36, 50, 56 and other connecting bodies of similar construction for different applications. A wide variety of connections can be made very easily in the field using a small variety of standard parts. Furthermore, a sufficient number of standard parts can be prepared without requiring excessive costs.

FIG. 6 shows a variant 10' of the clamping body. Its connecting part 16 is designed similarly to the clamping body 10 shown in FIG. However, the connection part 16
The threaded portion 68 of the tightening sleeve 12' is connected to the tightening arm 2 having the tightening rib 26.
8 is provided protrudingly. However, the outer surface of the clamping arm 28 has a gentle taper, as shown at 70, toward the free end of the clamping sleeve 12'.

The modified clamping ring 14' has an internal thread 72 that is threadedly engaged with the threaded portion 68 and a tapered tensioning portion 74 that interacts with the outer surface 70 of the clamping arm 28.

The clamping body 10' shown in FIG. 6 functions in exactly the same way as the clamping body 10 of FIG.
8, while the tightening body 1
0, the axial movement can be effected directly by sliding the clamping ring.

[Brief explanation of the drawing]

FIG. 1 is a front view, partially in section, of a standard type of unit for making various connections for pressure working medium pipes. FIG. 2 is a front view, partially in section, of an axial connection used with the clamping body of FIG. 1 and forming an intermediate piece between a pressure working medium hose and a threaded connection tube; Figure 3 shows 2 in Figure 1.
FIG. 3 is a partially sectional front view of a 90° elbow-shaped clamping body used for connecting two pressure working medium hoses together with two clamping bodies; Figure 4 shows T
It is a front view showing a part of the T-shaped connecting body in cross section for configuring the shaped connecting member. FIG. 5a is a front view of a T-shaped connecting member made from the T-shaped connecting body of FIG. 4 and three fastening bodies of FIG. 1. FIG. 5b is a partially sectional front view of a threaded connection body consisting of the connection body of FIG. 2 and the tightening body of FIG. 1. 6th
The figure is an axial longitudinal sectional front view of a modification of the standard type clamping body. 10, 10'... Tightening body, 12, 12'... Tightening sleeve, 14... Tightening ring, 16... Connection part, 18... Fitting hole, 20... Locking groove (second locking groove) (stopping means), 22... inward stepped portion, 24... tightening portion,
26... Tightening rib, 28... Tightening arm, 30... Slit, 32... Outward step, 34... Annular groove, 36
... Axial connection body, 38 ... Connection portion, 40 ...
Locking protrusion (first locking means), 42...hexagonal part,
44...Threaded part, 46...Step hole, 48...O ring, 50...Elbow type connection body, 52...Connection part, 54...Curved part, 56...T type connection body, 5
8... Connection part, 60... T-shaped part, 62... Support sleeve, 64... Bolt hole, 66... T-shaped connection member, 67... Threaded connection body, 68... Threaded part, 72... Female thread part, 74... Tensioning part.

Claims (1)

[Scope of utility model registration request] A set of unit-assembled parts for forming a fastening joint between a hose or a pressure medium pipe and a connecting pipe part, which can be attached or detached instantly, and comprising a tightening sleeve with a collector chuck-like slit and a connecting pipe part. A hose end or a medium pipe end is inserted between the tightening sleeves, and is adjustable on the tightening sleeves and tightened and fixed by a tightening ring. , the connecting pipe section comprises an O-ring used for sealing the hose end or the medium pipe end, and the set of unitary parts each provides a different pressure medium flow path and is identically molded. A plurality of basic structural members, ie, axial connections 3, having
6. Elbow type connection body 50 and T type connection body 56
The basic structure members 36, 5
0, 56 and the tightening sleeve 12 are made as separate parts by injection molding from plastic, and the connecting pipe portions of the basic structural members 36, 50, 56 lock the tightening sleeve 12. The O-ring 48 has a locking means that can be attached to the basic structure member 3 by press fitting.
6, 50, 56 and is irremovably held in the step hole even when the basic structure member 36, 50, 56 is not yet assembled. At the inner deep part 22 of the sleeve 12, the basic structure member 3
6, 50, 56 and the sleeve 12 are fitted into the fitting hole 18
When engaged by the solid walls of the O-ring 48, the O-ring 48 is pierced by the connecting end of a conduit or hose connected to the O-ring 48; By means of its radially inward facing surface, it tightly closes the jacket of the connecting end of said conduit or hose, and each of said substructure members 36, 50, 56 has a similar type of material at its end. A unitary set of parts for instantly creating a clamping joint between a hose or a pressure working medium pipe, characterized in that it is provided with locking means, and a connecting pipe section, for example of a casing.