WO2012168081A1

WO2012168081A1 - Plug connector

Info

Publication number: WO2012168081A1
Application number: PCT/EP2012/059666
Authority: WO
Inventors: Uwe Ehrhardt; Marion Schieber-Stitz; Michael Botschka; Blazenka DELISIMUNOVIC
Original assignee: Robert Bosch Gmbh
Priority date: 2011-06-08
Filing date: 2012-05-24
Publication date: 2012-12-13
Also published as: KR101910221B1; JP5707537B2; KR20140027398A; DE102011077178B4; CN103582775A; CN103582775B; DE102011077178A1; JP2014526016A

Abstract

A plug connector (1) is used for lines (11) carrying media, in particular hydraulic lines of fuel injection systems. The plug connector (1) comprises a plug body (6), having a catch element (15), and a securing clip (18) movable relative to the plug body (6) into a locking position, the securing clip (18) securing the catch element (15) when in the locking position. Securing wings (20, 21) are also provided for the securing clip (18). When in a securing position, the securing wings (20, 21) protect the securing clip (18) against the displacement of said securing clip (18) into the locking position.

Description

description

title

Connector state of the art

The invention relates to a connector for media-carrying lines. In particular, the invention relates to the field of hydraulic line connectors

Fuel injection systems.

From DE 10 2006 061 952 A1 a connector for media-carrying lines is known. The known connector is suitable for mounting in an opening of an injector body of a fuel injector. The connector has a plug body on which at least one latching element is formed and the at least one

Having connecting pieces. The locking element is secured in a locking position of a slidably received on the connector body securing bracket in the opening.

In the connector known from DE 10 2006 061 952 A1 can be pushed behind the locking element for securing after the assembly of the connector body to a counterpart of the securing bracket. This prevents springing back of the locking element and thus a release of the connector from the counterpart in operation. The mounting and securing thus takes place in two stages. In the first stage, the plug body is attached to the counterpart. In the second stage is by locking the

Retaining clip achieved securing the plug body. Here, there is a problem that the safety bar is operated during the execution of the first stage, so that an early triggering of the second stage takes place, although the first stage is not yet completed. Thus, there is the disadvantage that a reliable installation may not be guaranteed or the installation effort is correspondingly large.

Advantages of the invention The plug connector with the features of claim 1 has the advantage that an improved operation is realized. Specifically, a reliable assembly can be realized even with a relatively low cost.

The measures listed in the dependent claims are advantageous

Further developments of the connector specified in claim 1 possible.

The connector is used for media-carrying lines, in particular for

Hydraulic lines of fuel injection systems. The connector comprises a plug body having a latching element, and a relative to the plug body in a locking position adjustable securing bracket, wherein the securing bracket secures the locking element in the locking position. In addition, safety wings are provided for the safety bar. The securing wings secure in a securing position the securing bracket against an adjustment of the securing bracket in the

Lock position.

It is advantageous that the securing bow can be adjusted along a longitudinal axis of the plug body and that the securing wing can be expanded at least approximately perpendicular to the longitudinal axis in order to release the securing bow from the securing position. Furthermore, it is advantageous that a releasable locking connection is formed between the securing bracket and the securing wing. For example, this snap-in connection can be achieved by spreading the safety wing, so that an adjustment of the safety bar in the locking position is possible.

For the design of the latching connection, it is advantageous that the safety wing has a latching nose, which engages behind a locking lug provided on the safety latch. Moreover, it is advantageous that the securing wing has a latching element of the plug body facing end portion. Depending on the length of the end section can be an automatic spreading of the safety wing during assembly or a

Spreading the safety wing are made possible with a mounting device.

It is also advantageous that the securing bracket has an end-side actuating element. About the actuating element can first be a mounting force on the

Retaining clip are applied to the connector body to add the connector body in its counterpart. Subsequently, the released safety clip can be actuated via the actuating element. Thus, simplifies the assembly of the connector. Moreover, it is advantageous that the locking element is designed as a latching hook. The latching hook can in this case be designed to be resilient and engage when joining the plug body, for example in a suitable recess of the counterpart.

It is also advantageous that the securing wing is connected to the plug body or that the securing wing is configured on the plug body. This results in a compact design. Specifically, a two-part design can be realized.

It is also advantageous that a further securing wing is provided, which is arranged opposite to the securing wing with respect to a longitudinal axis of the plug body and that the securing wing and the further securing wing the

Retaining clip in the securing position against the adjustment in the

Secure locking position. This initially allows a uniform

Power transmission from the secured securing bracket to the plug body. In addition, an advantageous power transmission is possible for actuating the safety wing, for example by spreading on both sides, whereby, for example, a radial

Loading the plug body or the safety bracket is avoided. Thus, it is also advantageous that the securing wings are in each case radially outwardly aufbiegbar to release the securing bracket.

Brief description of the drawings

Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with corresponding reference numerals. It shows:

Fig. 1 shows a connector with a counterpart in a schematic

Sectional view according to a first embodiment during assembly;

Fig. 2 shows the connector shown in Fig. 1 with the counterpart during the

Assembly;

Fig. 3 shows the connector shown in Fig. 1 with the counterpart in the assembled

State and

Fig. 4 shows the connector shown in Fig. 2 with the counterpart according to a second embodiment of the invention during assembly. Embodiments of the invention

Fig. 1 shows a connector 1 with a counterpart 2 in a schematic

Sectional view according to a first embodiment of the invention during assembly. The connector 1 has a longitudinal axis 3, which coincides with the insertion of the connector 1 in the counterpart 2 with a longitudinal axis 3 of a bore 4 of the counterpart 2. The connector 1 is in this case inserted in a joining direction 5 along the longitudinal axis 3 in the bore 4. The insertion takes place in several stages, which are described with reference to FIGS. 1 to 3.

The connector 1 shown in FIG. 1 has a plug body 6. In that

Plug body 6 is an axial bore 7 configured via the medium in the mounted state, for example, from one end 8 of the bore 7 in the bore 4 of the

Counterpart 2 can be performed. However, the medium can also be guided out of the bore 4 of the counterpart 2 to the end 8 of the bore 7. At the end 8 in this case, for example, is provided perpendicular to the longitudinal axis 3, a connection channel for a connecting piece, not shown. To seal a sealing ring 9, which is used in the region of one end 10 of the plug body 6 in an annular groove.

Viewed from the end 10 are located behind the sealing ring 9 locking elements 15, 16, which are formed in this embodiment as a resilient latching hooks 15, 16. In the bore 7 a adapted to the latching hooks 15, 16 contour 17 is configured. In the assembled state, which is illustrated in FIG. 3, this is a

Locking connection between the latching hooks 15, 16 and the contour 17 of the bore 4 of the counterpart 2 allows. However, such a connection is only limited against the joining direction 5 resilient because the locking hooks 15, 16 at a correspondingly large

In principle, stress can spring back again. The connector 1 also has a securing bracket 18 with a

Actuator 19. In addition, securing wings 20, 21 are provided which are connected to the plug body 6 or are configured on the plug body 6. The securing wings 20, 21 have latching lugs 22, 23 which cooperate with locking lugs 24, 25 configured on the actuating element 19 to latching connections. Thus, the securing bracket 18 is fixed by positive engagement by means of the securing wings 20, 21 in the illustrated securing position relative to the plug body 6. Thus, the actuating element 19 can be acted upon in the joining direction 5 to insert the plug body 6 in the direction 5 in the bore 4 of the counterpart 2. Fig. 2 shows the connector 1 shown in Fig. 1 with the counterpart 2 during assembly. 2, the plug body 6 is inserted so far into the bore 4 of the counterpart 2, that the latching hooks 15, 16 are engaged on the contour 17 in the counterpart 2. In this position reach end portions 26, 27 in contact with an upper surface 28 of the counterpart 2, so that the securing wings 20, 21 are bent with respect to the longitudinal axis 3 radially outward. As a result, the locking connection between the

Latches 22, 23 of the securing wings 20, 21 and the locking lugs 24, 25 of the

Secured bracket 18, so that the securing bracket 18 is released. The release of the securing wings 20, 21 thus takes place by the action of a counter force on the securing wings 20, 21, which is introduced axially through the counterpart 2.

The joining of the plug body 6 in the bore 4 can be supported by a cylindrical portion 29 of the plug body 6. The contour 17, in which the latching hooks 15, 16 engage, can be configured in particular as a groove 17.

In the position shown in FIG. 2 of the securing bracket 18 relative to the

Plug body 6, the securing bracket 18 is first fixed by engaging a latch 35 in a recess 36 of the plug body 6 yet. Since the securing wings 20, 21 have already released the securing clip 18, the catch nose 35 can be disengaged by applying a certain force to the actuating element 19 in the joining direction 5

Well 36 are raised.

Fig. 3 shows the connector 1 shown in Fig. 1 with the counterpart 2 in the assembled state. Will starting from the situation shown in FIG. 2, the

Holding force of the locking lug 35 exceeded in the recess 36, then the released securing bracket 18 can be adjusted to the position shown in FIG. The

Circlip 18 is then in a locking position. In the

Locking position ensures the safety latch 18, the latching hooks 15, 16. This is a spring back of the latching hooks 15, 16 reliably prevented from the contour 17. Therefore, the plug body 6 is reliably fixed in the bore 4. The latch 35 of the

Securing bracket 18 then engages in a further recess 37 of the plug body 6. Thus, the securing bracket 18 can be pushed to some extent behind the latching hooks 15, 16. The securing bracket 18 can be secured by the engagement of the locking lug 35 in the recess 37.

Thus, the individual stages during the joining of the connector 1 in the bore 4 of the counterpart 2 can be reliably realized. Specifically, a false trip of the Circlip 18 avoided, so that the securing bracket 18 can be adjusted only in the locking position when the latching hooks 15, 16 engage in the contour 17 of the bore 4 of the counterpart 2. In this exemplary embodiment, the securing wings 20, 21 can be expanded at least approximately perpendicular to the longitudinal axis 3, in order to release the securing bow 18 from the securing position.

FIG. 4 shows the connector 1 shown in FIG. 2 with the counterpart 2

according to a second embodiment of the invention. Here, FIG. 4 shows a position corresponding to FIG. 2 during assembly. In this

Embodiment, the end portions 26, 27 of the securing wings 20, 21 configured shorter than in the first embodiment. Thus, the locking hooks 15, 16 already engage in the contour 17 of the bore 7, although the end portions 26, 27 are still spaced from the top 28. The triggering or release of the securing bracket 18 takes place in this embodiment by an additional

Mounting device 38, which bends the securing wings 20, 21 in the radial direction 39, 40 in order to release the latching connections between the latching lugs 22, 23 of the securing wings 20, 21 and the latching lugs 24, 25 of the plug body 6. Subsequently, the securing bracket 18 can be adjusted in the joining direction 5 in the locking position. The locking position corresponds to the position shown in Fig. 3. However, in this case a permanent bending of the securing wings 20, 21 or a contact with the upper side 28 can be avoided. In this way, if necessary, a force acting against the joining direction 5 on the securing bracket 18 can be avoided.

Depending on the configuration, the holes 4, 7 may be parts of a media-carrying line 1 1. The invention is not limited to the described embodiments.

Claims

claims

1 . Connector (1) for media-carrying lines (1 1), in particular for

Hydraulic lines for fuel injection systems, comprising a plug body (6) which has at least one latching element (15) and a securing bracket (18) which can be adjusted relative to the plug body (6) into a locking position, wherein the safety latch (18) in the locking position 15) ensures

characterized,

in that at least one securing wing (20, 21) is provided for the securing bow (18) and that the securing wing (20, 21) secures the securing bow (18) in a locking position against an adjustment of the securing bow (18) into the locking position.

2. Connector according to claim 1,

characterized,

in that the securing bow (18) is adjustable along a longitudinal axis (3) of the plug body (6) and that the securing wing (20, 21) can be spread open at least approximately perpendicular to the longitudinal axis (3) in order to remove the securing bow (18) from the

Release the hedging position.

3. Connector according to claim 1 or 2,

characterized,

that between the securing bracket (18) and the securing wing (20, 21) is formed a releasable latching connection.

4. Connector according to claim 3,

characterized,

in that the securing wing (20, 21) has a latching nose (22, 23) which engages behind a latching nose (24, 25) provided on the securing clip (18).

5. Connector according to one of claims 1 to 4,

characterized,

the securing wing (20, 21) has an end section (26, 27) facing the latching element (15, 16) of the plug body (6).

6. Connector according to one of claims 1 to 5,

characterized,

the securing clip (18) has an end-side actuating element (19).

7. Connector according to one of claims 1 to 6,

characterized,

the latching element (15, 16) is designed as a latching hook (15, 16).

8. Connector according to one of claims 1 to 7,

characterized,

in that the securing wing (20, 21) is connected to the plug body (6) or that the securing wing (20, 21) is designed on the plug body (6).

9. Connector according to one of claims 1 to 8,

characterized,

in that a further securing wing (21) is provided, which is arranged opposite to the securing wing (20) with respect to a longitudinal axis (3) of the plug body (6) and that the securing wing (20) and the further securing wing (21) engage the securing bow (18). Secure in the locking position against the adjustment to the locking position.

10. Connector according to claim 9,

characterized,

in that the securing wings (20, 21) can each be bent radially outwards in order to release the securing bow (18).