WO2008128501A1

WO2008128501A1 - Hydraulic plug-in connection

Info

Publication number: WO2008128501A1
Application number: PCT/DE2008/000548
Authority: WO
Inventors: Yannick Christiaens; David Roger Lucien Siffelet
Original assignee: Luk Lamellen Und Kupplungsbau Beteiligungs Kg
Priority date: 2007-04-19
Filing date: 2008-03-31
Publication date: 2008-10-30
Also published as: DE102008016449A1; DE112008000810A5; DE112008000810B4

Abstract

The invention relates to a plug-in connection for lines (2), particularly pressure lines for clutch disengagement and brake systems in vehicles, the plug-in connection being configured such that the position association of the plug-in part (3) in the sleeve part (1) is achieved without additional components, while creating an anti-turn mechanism at the same time, in that in a region defined by a contour (15) the thickness of the lateral surface of each plug-in part half (3a, 3b) of a two-piece plug-in part (3) has a diminished material strength, and the thickness of the sleeve part (1) has an increased strength on the inner lateral surface in the respectively corresponding region defined by a contour (16).

Description

Hydraulic connector

The invention relates to a hydraulic connector according to the preamble of claim 1. Plug connections of this type are used for connecting lines, in particular pressure lines for Kupplungsausrück- and brake systems in vehicles.

To produce a mechanical connection, for example, with other lines or components, pressure lines end connectors on which the ends can be designed as a plug or as a sleeve part. Accordingly, the end of the line to be connected or the connection of the component to be connected is designed as a sleeve or plug-in part. To ensure the tightness of the later filled with pressure medium lines, in particular on a connection point produced by means of a plug connection, this is provided with a sealing element. For this purpose, preferably annular sealing elements are used, which are either pushed over the male part before assembly with the sleeve part, or are inserted into the sleeve part.

In DE 10 2006 040 994 a two-part, designed as a plug-in connector plastic is described, which consists of two interconnected cylindrical shells. These cylinder shells are each provided with locking elements, wherein the locking elements are executed inversely on each cylinder shell on both sides of the cylinder axis. These locking elements are used only for fixing the position of both cylindrical shells and have no connection function. However, the connection function can be realized by means of one or more locking elements, whose or whose end is formed like a hook. With this hook, the locking element snaps into a correspondingly executed depression of the cylinder shell to be connected. Furthermore, on the circumference of at least one cylindrical shell a spring-elastic snap element is provided with a protruding from the lateral surface end that can change its position relative to the lateral surface of the cylinder shell due to its elasticity, so that it is compressible and after elimination of the radial force back to its original Situation goes back. The plug-in part thus formed is inserted into a sleeve part, which has corresponding recesses for the snap-action elements of the plug-in part on the circumference. In this way, although a positional assignment of the male part in the sleeve part is achieved during the insertion process, - which, however, in the radial direction, due to the design, is subject to play. For certain applications, however, an exact position assignment in both the axial and in the radial direction without additional operation is required.

Therefore, the object of the invention is to make the parts of a connector so that without additional components a positional assignment of the male part is realized in the sleeve part with simultaneous rotation.

This object is achieved with a hydraulic connector with the features of claim 1.

Accordingly, the connection point is designed such that the connection designed as a sleeve part, which can be connected to an end of a pressure line completed with a two-part plug-in part, by the thickness of the lateral surface of each plug-in half in a region defined by a contour material weakening and the thickness of Sleeve part on the inner circumferential surface in the corresponding thereto, delimited by a contour region has an increase.

Through this structural design of the lateral surfaces of both cylinder halves of the male part and the inversely designed inner surface of the sleeve, a shoulder is generated along the contours, whereby initially a positively driven position assignment of both components is achieved during assembly, which facilitates the insertion process. At the same time, this paragraph forms a stop for the male part in the sleeve part not only in the axial, but also in the radial direction. With this stop in the radial direction an anti-rotation is achieved.

In an advantageous embodiment of the invention, the material weakening of a male half is achieved by a reduction of the original lateral surface, which falls beyond the contour to a predetermined amount and is constant in the area defined by the contour. However, the lowering along the contour from the original lateral surface can just as easily take place so that it continuously drops in the region defined by the contour to a certain thickness, so that an inclined plane is created. Advantageously, the contour runs on the lateral surface of the male half, starting from the center line, at an angle symmetrical to this, until the width of the lateral surface is reached. The inner surface of the sleeve part is executed inversely in the connection region to these contours, wherein they correspond numerically with the contours of the male part. In the sleeve part, the corresponding contour creates a boundary between an increase in half of the inner circumferential surface defined, which corresponds to a material thickening for correspondingly corresponding lowering of the male part.

In this context, a "reduction" is defined as a single-stage reduction of the original diameter of a plug-in half to a smaller diameter and consequently an "increase" as a single-stage reduction of the original inner diameter to a correspondingly smaller inner diameter of the sleeve.

To reduce the cost of plastic is provided at least for both male part halves, so that they can be produced in a cost-effective injection molding. However, the sleeve part, which corresponds for example to the connection of a component within the hydraulic route, can also be manufactured inexpensively from plastic, if it allows the pressure forces occurring.

Further advantages and advantageous developments of the invention are the subject of the following figures and their parts description.

Show it:

FIG. 1 shows a spatial representation of the components to be connected,

FIG. 2 shows a plan view of the components to be connected,

FIG. 3 is a sectional view of the components according to FIG. 2.

FIG. 1 shows the components to be connected in a three-dimensional representation. In this example, the connection of a slave cylinder is designed as a sleeve part 1, which is to be connected to the end of a pressure line 2. For this purpose, the pressure line 2 is provided in its end region with a plug-in part 3. For sealing the pressure line 2 in the connection of the slave cylinder or in the sleeve part 1 is designed as an O-ring sealing element 7. For cost reasons, it is advantageous to produce at least the male part 3 of a plastic material. The sleeve part 1 can, depending on the required strength, also consist of another inexpensive, pourable material. - A -

As can be seen from Figure 1, the pressure line 2 is provided in its end with two circumferential beads 13a and 13b, which serve to fix the position of the O-ring 7 and the male part 3. Due to the bead 13b, which is provided for defining the axial position of the male part 3 on the pressure line 2, this is designed in two parts for assembly reasons, the halves 3a, 3b are designed inversely to each other. Thus, the male part 3 can be assembled from the male part halves 3a and 3b. For positional positioning of the male part halves 3a and 3b to each other they are provided with corresponding positioning elements. Except one in each plug-in half 3a and 3b complementary to the bead 13b incorporated groove 14 passes from each male half 3a and 3b in the radial direction at least one pin 11 as a positioning out of its size and shape with the respective recess 4 of the opposite plug-in half 3a or 3b corresponds, so that both male halves 3a and 3b can be connected to each other. To secure this position, the male part halves 3a and 3b are also each provided with at least one latching hook 5, which also projects into a recess 6 of the opposite male half 3a or 3b and locked with its hook in this. Furthermore, the circumference of each male half 3a, 3b is provided with a snap hook 8 which is resilient radially outwards. With the help of these snap hooks 8, the outer diameter of the male part 3 is variable, so that it is reduced by the action of a force in the radial direction. When the force is removed, the snap hooks 8 again assume their starting position, as a result of which the plug-in part 3 again reaches its original outer diameter. The cross-sectional shape of the snap hooks 8 in turn corresponds with provided at the appropriate place in the sleeve part 1 recesses 12, so that over this a connection can be produced, which ensures a positional positioning in the sleeve part 1 in the radial and axial directions.

Figure 2 shows the components to be connected, sleeve part 1 and provided with the plug-in part 3 end of a pressure line 2, in a plan view, with only one plug-in part 3a or 3b is visible. From this figure, the positioning elements on the circumference of a male half 3a, 3b clearly visible, both from one of the opposite male half 3a, 3b latching in the recess 6 latching hooks 5 as well as inserted into the corresponding recesses 4 of the male half 3a, 3b Pins 11 exist. Furthermore, provided on the circumference of the male half 3a, 3b snap hook 8 can be seen. The provided with the male part 3 pressure line 2 is further completed in the end with an O-ring 7, which is mounted behind the bead 13 a on the outer diameter of the pressure line 2. It can also be seen from this FIG. 2 that the plug-in part halves 3a and 3b are provided at the end with depressions 9 which weaken the thickness of the material in the front region of the plug-in part 3 and, starting from the center line of a plug-in half part 3a, 3b at an angle symmetrical to this extend to the width of the lateral surface of the male half 3a, 3b.

The illustrated in this figure, to be connected to the male part 3 sleeve part 1, has a lateral surface, which is provided at the corresponding location in the mating region each with opposite recesses 12 for receiving the snap hook 8 of the male part 3.

Figure 3 shows components of the connector according to the invention of Figure 2 in a sectional view. Here, the completed with the O-ring 7 and a male half 3a, 3b pressure line 2 can be seen. Likewise, the positioning elements, latching hook 5 and recess 6 and the pins 11 are shown with the associated recesses 4 in the male half 3a, 3b. From this figure is also clearly the positional fixation of the O-ring 7 and the male half 3a, 3b on the pressure line 2 can be seen. For this purpose, the beads attached to the pressure line 2 13a and 13b, the bead 13a, as also seen in Figure 2, for fixing the position of the O-ring 7 and the bead 13b, as already mentioned, for fixing the position of the plug halves 3a, 3b is used. For this purpose, a groove 14 is inserted in the male part halves 3a and 3b at the corresponding location.

In this figure, the sleeve part 1 is also shown in section. In addition to the recess 12 in the lateral surface, a material thickening 10 is visible in the interior. This material thickening 10 increases the thickness of the material of the sleeve part in a certain area, which is bounded by a contour 15. This area is inversely designed in extension and shape to the lowered portions of the plug-in halves 3a, 3b. In this way, a positive guidance is generated when connecting plug-in part 3 and sleeve part 1, which simultaneously acts as a rotation of both parts by the structural design of both parts. This forced operation ensures that the time required for mounting both parts is considerably reduced. In addition, the male part halves 3a and 3b made of injection-moldable plastic, so that their production is inexpensive possible. LIST OF REFERENCES

Sleeve part / Slave cylinder connection Pressure line Plug part a Plug half b Plug part half Cutout Snap hook Cutout for snap hooks Sealing element / O-ring Snap hook Lowering to plug half 0 Material thickening inside the sleeve part 1 Positioning element / pin 2 Cutout for snap hook 3a Bead 3b Bead 4 Groove 5 Contour on plug half 6 Contour in sleeve part

Claims

claims

1. Hydraulic connector with a sleeve part (1) which is connected to a with a male part (3) and a sealing element (7) completed pressure line (2), wherein the male part (3) of two complementarily shaped non-positively and positively connected Plug part halves (3a, 3b) is formed, the lateral surface is provided with at least one elastic snap hook (8) and the lateral surface of the sleeve part (1) for receiving the snap hook (8) has a corresponding number of recesses (12), characterized that the thickness of the lateral surface of each plug-in part half (3a, 3b) in a region delimited by a contour (15) material weakening and the thickness of the sleeve part (1) on the inner circumferential surface in the respectively corresponding, delimited by a contour (16) area has an increase.

2. Hydraulic connector according to claim 1, characterized in that the material weakening of the male half (3a, 3b) is achieved by a reduction (9) of the original lateral surface, which falls beyond the contour (15) to an amount and in which of the Contour (15) delimited area is constant.

3. Hydraulic connector according to claim 1, characterized in that the material weakening of the male half (3a, 3b) is achieved by a reduction (9) of the original material surface, beyond the contour (15) continuously in a demarcated from the contour area to falls to a certain amount.

4. Hydraulic connector according to claim 2, characterized in that the contour (15) on the lateral surface of a plug-in part half (3a, 3b), starting from the center line, at an angle symmetrical to this extends to the width of the lateral surface.

5. Hydraulic connector according to claim 1, characterized in that in the interior of the plug-in area of the sleeve part (1) contours (16) are provided, which numerically correspond to the contours (15) of the male part halves (3a, 3b).

6. Hydraulic connector according to claims 1 to 5, characterized in that the respective contour (16) defines a boundary between an elevation (10) within the inner circumferential surface of the sleeve (1) by the material thickening the amount of correspondingly corresponding reduction (9 ) of the male part (3).

7. Hydraulic connector according to claim 1 and 6, characterized in that the size and shape of the contour (16) in the sleeve part (1) to the contour (15) on the lateral surface of the male part half (3a, 3b) is executed inversely.

8. Hydraulic connector according to claim 1, characterized in that at least the male part (3) is made of plastic.