EP2596271A1

EP2596271A1 - Locking device for a connecting arrangement

Info

Publication number: EP2596271A1
Application number: EP11729577.4A
Authority: EP
Inventors: Franz Kreil; Andre Frenzel
Original assignee: Bayerische Motoren Werke AG
Current assignee: Bayerische Motoren Werke AG
Priority date: 2010-07-22
Filing date: 2011-07-01
Publication date: 2013-05-29
Also published as: WO2012016614A1; US8821185B2; US20130137295A1; DE102010031662A1

Abstract

A locking device (106) for a connecting arrangement between a connecting piece and a plug-type connector, which connecting piece has, radially on the outside, at least one first undercut region extending in the circumferential direction, which plug-type connector has, radially on the inside, at least one second undercut region which is suitable for corresponding with the at least one first undercut region in an engagement position and can be elastically deformed in the radial direction in such a way that the at least one first undercut region and the at least one second undercut region can be engaged or disengaged, the locking device being suitable for preventing a radial elastic deformation of the plug-type connector at least to such an extent that, in the connecting position, the at least one first undercut region and the at least one second undercut region are fixed in the corresponding engagement position.

Description

Securing device for a connection arrangement

The invention relates to a sichening device for a

Connecting arrangement between a socket and a connector, which neck radially outwardly at least one. In circumferential direction extending first undercut area, which connector radially inside has at least one second undercut region which is adapted to correspond with the at least one first undercut area in an engaged position and in Radial direction is elastically deformable such that the least a first undercut area and the at least one second undercut area can get into or out of engagement.

Such a connection arrangement with a nozzle and a

Connector is known for example from DE 37 27 858 A1. DE 37 27 858 A1, according to the nozzle radially outwardly has a circumferential ring with a ramp surface and a stop surface. The connector is oval or elliptical in cross-section, wherein the inner diameter of the connector is greater than the outer diameter of the nozzle, so that the connector surrounds the nozzle radially spaced. The connector has on the inside two diametrically opposed cams, each with a ramp surface and a stop surface.

When the connector is connected in the axial direction of the nozzle, run the connector-side contact surfaces and the socket side

Run-on surface on each other and the cams of the connector engage with the ring of the nozzle by the connector-side abutment surfaces and the abutment-side stop surface engage behind each other, so that the

Connector is firmly connected to the nozzle. The connector is elastically deformable in the radial direction. To release the connection arrangement, the connector is compressed from the outside in the areas between the cams, wherein the cams displace radially outward and engage the connector-side abutment surfaces and the abutment-side stop surface outside, so that the

Connector can be solved by the nozzle.

Such a connection arrangement with a nozzle and a

Connector is also the subject of EP 1 873 439 A2.

For safety reasons and / or due to legal regulations, it may be necessary to secure such a connection arrangement against unintentional loosening. The invention is therefore based on the object to provide a safety device for an initially mentioned connection arrangement.

The solution of the problem is done with a security device for a

Connecting arrangement with the features of claim 1, by the

Securing device is adapted to prevent a radial elastic deformation of the connector at least to the extent that in the connecting position of at least a first undercut area and the at least one second undercut area are fixed in a corresponding engagement position. Secured with the safety device according to the invention

Connection arrangement can only be solved if the

Fuse removed or the corresponding areas of the nozzle and / or the connector to be destroyed. This is one

unintentional release of the connection arrangement effectively prevented. Particularly preferred embodiments and developments of the invention are the subject of the dependent claims. Preferably, for a connection arrangement in which

Connection position between nozzle and connector is in

Circumferentially extending gap is formed, the

Securing device suitable for a positive engagement in the intermediate space. In order for a deformation of the connector is blocked so that unintentional release of the connection assembly is effectively prevented.

According to a preferred embodiment, the

Securing device to a first security area, which is associated with the nozzle in this context, the securing device is suitably designed clip-shaped adapted to the nozzle and thus forms even the first security area.

In addition, according to a preferred embodiment, the

Securing device on a second security area, the

In this case, it has proven to be expedient for the second securing area to be adapted to the shape of the intermediate space.

According to a preferred embodiment, the

Safety device also has a third securing area, which is assigned to the connector. The third securing area is preferably configured as a hook-hook-shaped.

Below is a particularly preferred embodiment of the invention with reference to figures explained in more detail, showing schematically and by way of example

Figure 1 secured against unintentional release

Connecting arrangement between a nozzle and a connector in the connection position, 2a shows a securing device in a spatial representation from the outside,

FIG. 2b shows a securing device in a spatial representation from the inside,

FIG. 3 a shows a connection piece with safety device during assembly;

FIG. 3b shows a connection piece with safety device and plug connector

Assembly,

Figure 4a shows a longitudinal section through a secured against unintentional connection arrangement between a nozzle and a connector in the connecting position and

Figure 4b shows a cross section through a against unintentional release

secured connection arrangement between a nozzle and a connector in the connecting position.

Figure 1 shows a secured against unintentional release

Connecting arrangement 100 between a nozzle 102 and a

Connector 104 in the connection position. The connection arrangement 100 is used in particular for connecting media-carrying lines in

Automotive engineering, preferably for applications in the field of ventilation.

In the illustrated embodiment, the connector 104 is connected to a vent hose 108. The tube 108 connects a

Vent opening of a crankcase of a motor vehicle internal combustion engine, not shown here, with an inlet opening in the intake tract 103 of the internal combustion engine. Through the hose 108, during operation of the internal combustion engine, blow-by gases can be supplied from the crankcase to the intake tract and thus to the combustion chamber of the internal combustion engine.

Crankcase side is the hose 108 is usually a Separator for separating gas and liquid, such as oil or oil mist, and / or upstream of a valve.

Other, not shown here embodiments, the

However, connection arrangement with nozzle and connector can also be used for another line connection, in particular for connecting fuel lines, tank ventilation lines, secondary air lines,

Oil cooler lines or brake pressure lines.

The inlet opening in the intake tract 103 of the internal combustion engine is designed as an angled neck 102. The hose 108 with connector 104 is pushed in the axial direction with its opening on the nozzle 102 and locked with the nozzle 102. A safety device 106 prevents a release of the connection. A detail view of the securing device 206 is shown in FIGS. 2a and 2b, FIG. 2a shows the securing device 206 in a spatial representation from the outside, a spatial representation from the inside is shown in FIG. 2b. The securing device 206 is overall clip-shaped, the diameter of the _. Stutzens (Figure 1: 102) adapted, designed. The securing device 206 encloses a circular arc extending over an angular range of slightly more than 180 °, in particular over an angular range of about 200 ° to about 220 °, extending circumference. Thus, the securing device 206 itself forms a first securing region 212, which is assigned to the connecting piece. A groove-shaped recess 214 corresponds to a corresponding contour of the nozzle, so that a positive locking a position assurance between nozzle and securing device 206 is achieved. An opening 224, which is configured in the present case approximately rectangular, allows a direct connection between the nozzle and connector in the connecting position. A tab-like area 213 ensures a secure hold and a

Support of the safety device 206 on the nozzle. A second securing area 226 is engageable with an in

Connection position formed between nozzle and connector

Interspace (Figure 4: 444) suitable. The second securing region 226 is adapted in shape to this gap and extends into

Circumferential direction on both sides of the opening 224. Starting from the opening 224, the second securing area 226 is in the radial direction

Towards an increasing thickness. The axial end face of the second

Guard area 226 is chamfered to facilitate insertion into the gap. A contour 217 and an opposite contour 221 ensure form-fitting additionally a position assurance between the securing device 206 and the connector.

Two latching hooks 216, 220 form a third securing area, which is assigned to the plug connector (FIG. 1: 104). The latching hooks 216, 220 are arranged diametrically opposite each other on the side of the securing device 206 and each comprise a hook 218, 222 with contact surface and abutment surface. The latching hooks 216, 220 are adapted to lock in the connecting position with a corresponding contour of the connector. FIG. 3 shows the assembly of the connection arrangement 300. FIG. 3 a shows how the securing device 306 is initially mounted on the connection piece 302 of the intake tract 303. The securing device 306 is clipped in the radial direction onto the socket 302, wherein a predetermined position of the securing device 306 is ensured on the nozzle 302 in both the radial and in the axial direction by means of suitable contours. In the present case, a contour corresponding to the recess (FIG. 2: 214) of the securing device 306 and two wing-like contours 311 are provided for the positioning on the nozzle side. The wing-like contours 311 serve in particular also for supporting the securing device 306 in the axial direction when the plug connector 304 is mounted. Figure 3b shows how subsequently the tube 308 with connector 304 is mounted. The nozzle 302 has circumferentially with an annular contour 310

Bake surface and stop surface on. The connector 304 has a flat annular portion 305 with two diametrically inside

opposite cam, each with a ramp surface and a

Stop surface on. Arranged offset to the cams in the circumferential direction by approximately 90 °, the flat-ring-shaped region 305 of the connector 304 has on the outside two diametrically opposite contours 307, which facilitate a compression of the flat-ring-shaped region 305.

The connector 304 is pushed in the axial direction, wherein in the region of the recess (Figure 2: 214) and diametrically opposite the connector 304 and the nozzle 302 positively connect by the cams of the connector 304 with the ring contour 3 0 of the nozzle 302 latch. In this case, the second securing area 226 engages in the in

Connection position between the nozzle 302 and connector 304 formed gap. The frontal bevel of the securing device 306 facilitates sliding of the connector 304. The locking hooks (Figure 2: 216, 220) engage with the flat-ring-shaped portion 305 of the connector 304 in the contouring 307 and then cover them from the outside.

FIG. 4 shows a longitudinal section through a connection arrangement 400 secured against unintentional release between a socket 402 and a plug connector 404 in the connection position, a cross section being illustrated in FIG. 4b.

The nozzle 402 has circumferentially on an annular contour 410 with ramp surface and stop surface. The plug connector 404 comprises a flat-ring-shaped region 438 with two diametrically opposite connection regions 428, 432 for connection to the socket 402. The connection regions 428, 432 comprise on the inside cams 430, 434 each with a ramp surface and a stop surface. The cams 430, 434 of the connector 404 are with the annular contour 410 of the nozzle 402 latched by the stop surfaces of the ring contour 4 0 and the cam 430, 434 engage behind each other. To the cams 430, 434 arranged circumferentially offset by approximately 90 °, the flat-ring-shaped portion 438 of the connector 404 on the outside two diametrically opposed contouring 440.442, the one

Compressing the flat annular portion 438 facilitate. Radially inside the connector 404 has a nozzle-shaped portion 436, with which it is inserted into the socket 402, wherein between

Plug connector 404 and neck 402 at least one seal is arranged. The nozzle-shaped portion 436 and the flat annular portion 438 of the connector 404 together define a U-shaped receiving space with bottom 446. In this receiving space, the nozzle 402 is such

recorded that its axial edge region rests against the bottom 446.

To prevent inadvertent release of the connection assembly 400, a securing device 406 is provided, which is connected on one side to the neck 402 and on the other hand with the connector 404 and a compression of the flat annular portion 438 of the connector 404 and thus a release of the cams 430, 434 of prevents the ring contour 410 of the neck 402

The securing device 406 comprises a second securing region 426, which is formed in the connection between the nozzle 402 and the connector 404

Intervening space 444 engages and this at least partially positively filled in the radial direction by radially outwardly abuts the nozzle 402 and radially inwardly on the flat-ring-shaped portion 438 of the connector 404. It is not necessary that the gap 444 is filled over the entire circumference of the securing portion 426 of the securing device 406. It is essential that a squeezing of the

flat ring-shaped portion 438 of the connector 404 in the region of the contouring 440, 442 is prevented. Latching hooks 416, 420 form a third securing area of the securing device 406. The latching hooks 416, 420 are latched to the flat annular portion 438 of the connector 404 in the contouring 440, 442 and cover them from the outside. Incidentally, in addition to the description of the

referenced previous figures.

The safety glass JTfg 406 is preferably made of plastic, in particular of a recyclable material with low

Permeationswerten, such as polyamide, optionally filled. In the present case, the securing device 406 consists of polyamide 6 with 30% glass fiber or polyamide 12 with 20% glass fiber.

Claims

claims

Securing device (106, 206, 306, 406) for a connection assembly (100, 200, 300, 400) between a connection piece (102, 302, 402) and a plug connector (104, 304, 404), which connection piece (102, 302, 402) radially outwardly has at least one circumferentially extending first undercut region (310, 410), which plug connector (104, 304, 404) has radially inside at least one second undercut region (430, 434) which is suitable with the at least one first

Undercut region (310, 410) in an engaged position to correspond and in the radial direction is elastically deformable such that at least a first undercut region (310, 410) and the at least one second undercut region (430, 434) in or out of engagement, wherein the securing device (106, 206, 306, 406) is suitable for preventing a radial elastic deformation of the connector (104, 304, 404) at least to the extent that at least a first undercut area (310, 410) and the at least one second one are in the connecting position Undercut area (430, 434) are fixed in corresponding engagement position.

A securing device (106, 206, 306, 406) according to claim 1, wherein a circumferentially extending intermediate space (444) is formed in the connecting position between the connecting piece (102, 302, 402) and the plug connector (104, 304, 404), characterized in that the securing device (106, 206, 306, 406) engages in a positive engagement with the

Interspace (444) is suitable.

Securing device (106, 206, 306, 406) according to one of the preceding claims, characterized in that the securing device (106, 206, 306, 406) 206, 306, 406) has a first securing area (212) associated with the nozzle (102, 302, 402).

4. securing device (106, 206, 306, 406) according to any one of the preceding claims, characterized in that the securing means (06, 206, 306, 406) clip-shaped adapted to the neck (102, 302, 402)

is configured and forms the first security area (212).

5. security device (106, 206, 306, 406) according to any one of the preceding claims, characterized in that the securing means (106, 206, 306, 406) has a second securing portion (226, 426) associated with the intermediate space (444) is.

6. security device (106, 206, 306, 406) according to any one of the preceding claims, characterized in that the second securing portion (226, 426) of the shape of the intermediate space (444) is adapted.

7. securing device (106, 206, 306, 406) according to any one of the preceding claims, characterized in that the securing means (106, 206, 306, 406) has a third securing region (216, 218, 220, 222, 416, 420) which is associated with the connector (104, 304, 404).

8. securing device (106, 206, 306, 406) according to any one of the preceding claims, characterized in that the third securing region (216, 218, 220, 222, 416, 420) is designed like a hook-hook.