DE102021132812A1 - Injection molded housing for a ball joint - Google Patents

Abstract

The invention relates to an injection-moulded housing (4) for a ball joint, with a receptacle (5) for a ball pivot (1), which has a bearing surface (6) for the bearing ball (2) of the ball pivot (1), and a flat receiving slot (10 ) for a fuse element (18), wherein the receiving slot (10) extends from a side surface (12, 14) of the housing (4) which is adjacent to a surface from which the receptacle (5) extends, and the receiving slot (10) opening out into the receptacle (5) on opposite sides.

Description

The invention relates to an injection molded housing for a ball joint with a receptacle for a ball pivot, which has a bearing surface for the bearing ball of the ball pivot.

Together with the ball pivot, the housing forms a ball joint that can be used for a wide variety of applications. An application example is the connection of a spindle drive to two body parts of a motor vehicle. With the spindle drive, for example, a trunk lid can be opened and closed electromechanically. The spindle drive is connected to the body at one end, for example to the D-pillar, and at the other end to the tailgate. The ball joint then allows the degrees of freedom that are required to allow the spindle drive to move relative to the body and the tailgate when opening and closing the tailgate. The ball joint can also be used in a scissor drive or a hinge drive.

To lock the bearing ball of the ball stud in the socket, either a locking element mounted in the housing is used, which holds the bearing ball in the socket, or the bearing surface is designed in such a way that it encompasses the bearing ball over an angular range of more than 180°, so that the bearing ball is held locked in the receptacle. In the latter case, the housing is designed to be elastic in sections, so that the bearing ball can be pressed into the receptacle and the bearing surface then nestles against the bearing ball again.

Regardless of the manner in which the bearing ball is locked in the housing, complex injection molds are required in the prior art in order to either form the recesses for receiving the locking element or to form the receptacle and the bearing surface with slots so that they become elastic when the bearing ball is pressed in expand and then snap back. The slides required for this extend from the "underside" into the injection-moulded housing, i.e. from the side opposite to the side on which the pivot of the ball pivot is located when the ball joint is installed. Apart from the complex construction of the injection mold, this arrangement of the slides has the disadvantage that it leads to recesses in the bearing surface, so that there is a higher surface pressure between the bearing surface and the bearing ball during operation.

The object of the invention is to create an injection-molded housing with a ball bearing that can be produced with little effort and provides the largest possible bearing surface for accommodating the bearing ball of the ball pivot.

To solve this problem, an injection-molded housing for a ball joint is provided according to the invention, with a receptacle for a ball pivot, which has a bearing surface for the bearing ball of the ball pivot, and a flat receiving slot for a securing element, with the receiving slot extending from a side wall of the housing is adjacent to a surface from which the socket extends and the receiving slot opens into the socket on opposite sides. The receiving slot extending laterally into the housing can be produced in the injection molding tool with slides arranged laterally. It is therefore not necessary to provide slides that are located on the underside of the injection molded housing. This allows the bearing surface to be made uninterrupted without recesses. Furthermore, there is a high holding force for the securing element, since this can be supported on both sides of the receptacle in the receptacle slot.

Due to the receiving slot extending from a side surface of the housing, the housing is preferably closed on the side opposite to the surface from which the receiving extends. This results in the additional advantage that no dirt can get into the interior of the housing and in particular onto the bearing surface.

The receiving slot is preferably provided with a detent formation by means of which the locking ring can be locked in position. The locking design makes it possible to pre-assemble the securing element so that it remains in the receiving slot even if the ball pivot is not yet assembled. In the assembled state, the locking design can help ensure that the securing element does not come loose unintentionally.

The locking design can have at least one locking edge, by means of which the locking ring can be locked in a form-fitting manner. Such a latching edge represents a configuration that is geometrically simple to produce and by means of which the desired holding force for the securing element can be provided.

The locking edge can be part of an outer edge of the insertion slot. The insertion slot is then designed with shoulders or the like, on which the securing element can engage.

Alternatively it can be provided that the latching edge is part of a material bridge between two sections of the insertion slot is arranged. With this design, the latching edge can be integrated into some material sections without additional effort, which leads to a particularly stable design of the housing.

The locking configuration can also be formed by at least one retaining groove that is accessible on an outside of the housing. This design makes it possible to release the securing element from the receiving slot particularly easily.

The housing can be designed in one piece with a connection section, which is used for connection to another component, for example a vehicle body, a holding element or a lever. The connection section can be used, for example, for crimping, rolling up, injection molding, etc.

In order to achieve the above-mentioned object, according to the invention there is also provided an assembly with a housing of the type mentioned above and a securing element which is arranged in the receiving slot. With regard to the resulting advantages, reference is made to the explanations above.

The securing element can be a clip-like slide which encompasses the bearing ball of the ball pivot on both sides. This results in a particularly high pull-out force.

The slide can be provided with an external securing shoulder which interacts with a latching configuration of the housing. The securing shoulder ensures that the securing element reliably remains in the desired position in the receiving slot.

According to one embodiment of the invention, a spreading design is provided, which can interact with at least one free end of the slide when it is pushed deeper into the housing in a push-in direction beyond an operating position. When the securing element is pressed deeper into the housing beyond an operating position, the spreading design converts the securing element into an open position in which the bearing ball of the ball pivot can be pulled out of the receptacle.

The securing element can also be designed as a spring clip, which is provided with two bent latching arms. The locking arms can, for example, engage in the retaining groove on the outside of the housing and can accordingly also be released from the outside of the housing.

Provision can also be made for the securing element to be a slotted spring washer. This can be pressed into the receiving groove parallel to the central axis of the receptacle, where it snaps in elastically.

• - 1 ein Kugelgelenk gemäß einer ersten Ausführungsform der Erfindung in einer Seitenansicht;
• - 2 eine Draufsicht auf das Kugelgelenk von 1;
• - 3 einen Schnitt entlang der Ebene III-III von 2;
• - 4 eine Stirnansicht des Kugelgelenks von 1;
• - 5 einen Schnitt entlang der Ebene V-V von 4;
• - 6 eine perspektivische Ansicht des Kugelgelenks von 1;
• - 7 den Schnitt von 5 in einer perspektivischen Ansicht;
• - 8 in einer perspektivischen Ansicht das entlang der Ebene III-III geschnittene Gehäuse des Kugelgelenks der ersten Ausführungsform;
• - 9 in einer perspektivischen Ansicht ein Sicherungselement, das beim Kugelgelenk gemäß der ersten Ausführungsform verwendet wird;
• - 10 in einer perspektivischen Ansicht eine Baugruppe bestehend aus einem Gehäuse für ein Kugelgelenk und einem Sicherungselement gemäß einer zweiten Ausführungsform der Erfindung;
• - 11 in einer perspektivischen Ansicht einen Längsschnitt durch die Baugruppe von 10;
• - 12 in einer perspektivischen Ansicht eine Baugruppe bestehend aus einem Gehäuse für ein Kugelgelenk und einem Sicherungselement gemäß einer dritten Ausführungsform der Erfindung;
• - 13 in einer perspektivischen Ansicht einen Längsschnitt durch die Baugruppe von 12;
• - 14 das Gehäuse von 12 in einem Querschnitt;
• - 15 eine perspektivische Ansicht der Baugruppe gemäß der dritten Ausführungsform;
• - 16 in einer perspektivischen Ansicht ein Sicherungselement für die dritte Ausführungsform;
• - 17 eine Baugruppe bestehend aus Gehäuse und Sicherungselement gemäß einer vierten Ausführungsform der Erfindung;
• - 18 einen Längsschnitt durch die Baugruppe von 17;
• - 19 in einer perspektivischen Ansicht das Sicherungselement für die Baugruppe gemäß der vierten Ausführungsform;
• - 20 in einer perspektivischen Ansicht eine Baugruppe bestehend aus Gehäuse und Sicherungselement gemäß einer fünften Ausführungsform der Erfindung;
• - 21 einen Längsschnitt durch die Baugruppe von 20;
• - 22 eine Draufsicht auf die Baugruppe von 20;
• - 23 eine perspektivische Ansicht einer Baugruppe bestehend aus Gehäuse und Sicherungselement gemäß einer sechsten Ausführungsform der Erfindung;
• - 24 einen Längsschnitt durch die Baugruppe von 23;
• - 25 in einer perspektivischen Ansicht das Sicherungselement für die Baugruppe gemäß der sechsten Ausführungsform;
• - 26 eine Stirnseitenansicht einer Baugruppe bestehend aus Gehäuse und Sicherungselement gemäß einer siebten Ausführungsform der Erfindung;
• - 27 eine Draufsicht auf die Baugruppe von 26;
• - 28 einen Schnitt entlang der Ebene XXVII I-XXVIII von 27;
• - 29 einen Schnitt entlang der Ebene XXIX-XXIX von 26;
• - 30 in einem Schnitt den Schritt der Montage des Sicherungselements beim Gehäuse gemäß der siebten Ausführungsform;
• - 31 in einer Schnittansicht ein erstes Verwendungsbeispiel einer erfindungsgemäßen Baugruppe;
• - 32 in einer Draufsicht ein zweites Verwendungsbeispiel;
• - 33 in einer Schnittansicht ein viertes Verwendungsbeispiel;
• - 34 in einer Schnittansicht ein fünftes Verwendungsbeispiel.

The invention is described below with reference to various embodiments which are illustrated in the accompanying drawings. In these show:

• - 1 a ball joint according to a first embodiment of the invention in a side view;
• - 2 a plan view of the ball joint of 1 ;
• - 3 a section along the plane III-III of 2 ;
• - 4 an end view of the ball joint of 1 ;
• - 5 a section along the plane VV of 4 ;
• - 6 a perspective view of the ball joint of 1 ;
• - 7 the cut of 5 in a perspective view;
• - 8th in a perspective view cut along the plane III-III housing of the ball joint of the first embodiment;
• - 9 in a perspective view, a securing element used in the ball joint according to the first embodiment;
• - 10 in a perspective view an assembly consisting of a housing for a ball joint and a securing element according to a second embodiment of the invention;
• - 11 in a perspective view a longitudinal section through the assembly of 10 ;
• - 12 in a perspective view an assembly consisting of a housing for a ball joint and a securing element according to a third embodiment of the invention;
• - 13 in a perspective view a longitudinal section through the assembly of 12 ;
• - 14 the housing of 12 in a cross section;
• - 15 a perspective view of the assembly according to the third embodiment;
• - 16 in a perspective view, a fuse element for the third embodiment;
• - 17 an assembly consisting of housing and fuse element according to a fourth embodiment of the invention;
• - 18 a longitudinal section through the assembly of 17 ;
• - 19 in a perspective view, the securing element for the assembly according to the fourth embodiment;
• - 20 in a perspective view an assembly consisting of housing and fuse element according to a fifth embodiment of the invention;
• - 21 a longitudinal section through the assembly of 20 ;
• - 22 a plan view of the assembly of 20 ;
• - 23 a perspective view of an assembly consisting of housing and fuse element according to a sixth embodiment of the invention;
• - 24 a longitudinal section through the assembly of 23 ;
• - 25 in a perspective view, the securing element for the assembly according to the sixth embodiment;
• - 26 an end view of an assembly consisting of housing and fuse element according to a seventh embodiment of the invention;
• - 27 a plan view of the assembly of 26 ;
• - 28 a section along the plane XXVII I-XXVIII of 27 ;
• - 29 a section along the plane XXIX-XXIX of 26 ;
• - 30 12 is a sectional view showing the step of assembling the fuse element to the case according to the seventh embodiment;
• - 31 in a sectional view a first example of use of an assembly according to the invention;
• - 32 in a plan view a second example of use;
• - 33 in a sectional view, a fourth example of use;
• - 34 a fifth example of use in a sectional view.

In the 1 until 9 A ball joint and assembly according to a first embodiment of the invention is shown. The ball joint has a ball pivot 1 with a bearing ball 2 and a pivot section 3 and a housing 4 in which the bearing ball 2 of the ball pivot 1 is accommodated.

The housing 4 has a receptacle 5 whose bottom surface is formed by a bearing surface 6 for the bearing ball 2 .

The housing 4 can be divided into a bearing section 7 and a connection section 8.

The housing 4 consists of plastic and is produced using an injection molding process. Particularly suitable materials are technical plastics, which are characterized by high resilience and high abrasion resistance.

The ball stud 1 can be made of metal, in particular stainless steel. If necessary, the bearing ball 2 can be hardened. It is also possible to manufacture the ball stud 1 from a plastic material with a sufficiently high strength.

A securing element 18 is accommodated in the housing 4 and fixes the bearing ball 2 of the ball pivot 1 within the receptacle 5 . When the ball pivot 1 is in the assembled state, the pivot section 3 can be adjusted within an angular range provided by the design relative to the housing 4 without the bearing ball 2 being able to become detached from the bearing surface 6 (at least as long as there are no impermissibly high loads that cause the bearing ball 2 to fall out of the try to unbutton housing 4).

The assembly, which is formed from the housing 4 and the securing element 18, can be used to connect a component connected to the connection section 8 to another component to which the ball pivot 1 is fixed. One example is a spindle actuator that can be used to electromechanically open or close a vehicle's tailgate. The housing 4 is attached to the spindle drive, and the ball pivot 1 is attached to the tailgate or the vehicle body.

To receive the securing element 18 in the housing 4 , a receiving slot 10 is provided which is flat and extends from a side face of the housing 4 . This side face is adjacent to the side from which the receptacle 5 extends. In the embodiment shown, the receptacle extends slot 10 starting from the end face 12 of the housing 4, that is to say the surface which faces away from the connection section 8.

Especially in the 6 and 7 it can be seen that the receiving slot 10 is designed so wide that it is also open to the side surfaces 14 of the bearing section of the housing 4 .

On the side of the receptacle 5 facing away from the connection section 8 , a material bridge 16 is provided inside the receptacle slot 10 , which is located in the center of the receptacle slot 10 . The material bridge connects the sections of the housing 4 located “above” and “below” the receiving slot 10 and ensures stability.

In the receiving slot 10 there is a securing element 18 which, in the assembled state, serves to act on the bearing ball 2 above the equator and to support any pull-out forces in the housing 4 . For this purpose, the receiving slot 10 has a support surface 20 on each side of the receiving device 5 (see in particular 6 ).

The securing element 18 is designed here as a clamp-like slide with a generally U-shaped configuration. It has two legs 22 which are resiliently connected to one another by a middle section 24 .

In its installed state in the housing 4, the securing element 18 is latched in the receiving slot 10. This ensures that the securing element 18 does not become detached from the housing 4 even if the ball pivot 1 is not yet installed in the receptacle 5 .

In order to lock the securing element 18 in the receiving slot 10 , the housing 4 has a latching configuration which interacts with a locking configuration on the securing element 18 .

In the first embodiment, the locking configuration on the housing 4 is formed by the two corners 26 of the material bridge 16 which lie on the side of the receptacle 5 . The locking configuration is formed by nose-like projections 28 on the two legs 22 of the securing element 18; these interact with the corners 26.

When the securing element 18 is mounted in the receiving slot 10 , the securing element 18 is elastically expanded in order to be able to slide over the material bridge 16 far enough for the locking projections 28 to engage behind the latching lugs 26 of the material bridge 16 .

On the inside of the free ends of the two legs 22 , the securing element 18 has a guide chamfer 30 which is set at an angle relative to the central axis of the securing element 18 . When the securing element 18 is installed in the housing 4 , the guide chamfers 30 serve to spread the two legs 22 apart so that the securing element can slide over the material bridge 16 . In the assembled state, the guide chamfers 30 cooperate with a spreading design 32 on the housing 4, which is formed here by two inclined surfaces.

When assembled (see 7 ) there is a gap s between the middle section 24 of the fuse element 18 and the outer side of the material bridge 16 . Therefore, when the fuse element is pressed onto the middle section 24 from the outside, it can be pushed deeper into the receiving slot 10 . As a result, the guide chamfers 30 slide along the spreading formation 32, so that the distance between the two legs 22 of the securing element 18 increases.

In order to mount the securing element 18 in the receiving slot 10 of the housing 4 , the securing element 18 is pushed into the receiving slot 10 . The two legs 22 are bent up elastically until the locking projections 28 snap in elastically behind the snap-in corners 26 of the material bridge 16 . The securing element 18 is then pre-assembled so that it cannot be lost.

In order to mount the housing 4 on the ball pivot 1, it is pressed onto the bearing ball 2, as a result of which the securing element 18 is elastically bent open until the bearing ball 2 passes through the passage opening between the two legs 22. The securing element 18 then returns to its initial state.

The force required to spread the securing element 18 can be reduced by pressing on the middle section 24 of the securing element 18 and thereby spreading it open due to the interaction of the guide chamfers 30 with the spreading formation 32 .

If an attempt is made to pull the mounted bearing ball 2 out of the receptacle 5, the bearing ball 2 rests on the “underside” of the securing element 18, which in turn is supported on the support wall 20 (i.e. the “upper” wall of the receiving slot 10). As a result, the bearing ball 2 is reliably held in the receptacle 6 in all normal operating states.

In order to detach the ball pivot 1 from the housing 4, either such a high tensile force is applied that the bearing ball 2 deforms the securing element 18 to such an extent that it can pass through the opening between the two legs 22. Alternatively, the securing element 18 is spread by a user pressing on the middle section 24 so that the securing element 18 is pushed deeper into the receiving slot 10 .

If necessary, the fuse element can be separated from the housing 4 by placing the tip of a screwdriver or a similar tool in the gap s between the central section 24 of the fuse element 18 and the material bridge 16 of the housing 4 and then removing the fuse element 18 from the receiving slot 10 is levered out. This can be achieved by a chamfer 34 on the housing 4 (see in particular 6 ) can be facilitated.

In the 10 and 11 an assembly according to a second embodiment is shown. The same reference numerals are used for the components and features known from the first embodiment, and reference is made to the above explanations in this respect.

In the second embodiment, the receiving slot 10 for the securing element 18 does not extend in the longitudinal direction, but rather transversely. The receiving slot 10 is therefore only open on the two side surfaces 14 . The housing is closed on the end face 12 .

Another difference between the first and the second embodiment lies in the manner in which the securing element 18 is locked in the housing 4 .

In the second embodiment, the locking configuration is formed by two shoulders 27 which are arranged on the insertion-side end of a widening 36 of the receiving slot 10 . Behind these shoulders 27 there is in each case an external securing shoulder 38 which is arranged on the outside of the legs 22 .

The securing element 18 is accommodated in the receiving slot 10 with so much lateral play that the legs 22 can be spread wide enough to mount or dismount the ball pivot 1 .

In the 12 until 16 an assembly according to a third embodiment is shown. The same reference numerals are used for the components known from the previous embodiments, and reference is made to the above explanations in this respect.

A difference between the third embodiment and the previous embodiments is that in the third embodiment the securing element 18 consists of spring steel and has a circular cross-section, while in the first and the second embodiment the securing element 18 was designed as a flat slider.

The fuse element 18 used in the third embodiment has a nearly closed ring portion 40 (see FIG 16 ) on which are followed by two connecting legs 42, which in turn are followed by two bent locking arms 44.

The securing element 18 is locked in the receiving slot 10 in that the locking arms 44 are each received in one of two retaining grooves 46 which are accessible on the outside of the housing 4, more precisely in the area of the end face 12.

For assembly, the securing element 18 is pushed into the receiving slot 10 until the latching arms 44 are received in the retaining grooves 46 .

In the 17 until 19 an assembly according to a fourth embodiment is shown. The same reference numerals are used for the components and features known from the previous embodiments, and reference is made to the above explanations in this respect.

Similar to the third embodiment, the fourth embodiment uses a receiving slot 10 which extends into the housing only from the end face 12 of the housing; the receiving slot is closed towards the side faces 14 .

A slotted spring washer is used here as a securing element (see 19 ).

The securing element 18 is locked within the housing 4 in that its outer circumference comes to rest in the area of a widening 36, as is known from the second embodiment.

The receiving slot 10 has a width that is slightly less than the diameter of the securing element 18. This is pushed into the receiving slot in a slightly compressed state until it then opens elastically can widen as soon as it is in the area of widening 36.

In the 20 until 22 a fifth embodiment is shown. The same reference numerals are used for the components and features known from the previous embodiments, and reference is made to the above explanations in this respect.

The fifth embodiment largely corresponds to the fourth embodiment. The difference between the fourth and fifth embodiment is that in the fifth embodiment the receiving slot extends from one side surface 14 to the other side surface. The receiving slot is closed towards the end face 12 .

In the 23 until 25 a sixth embodiment is shown. The same reference numerals are used for the components and features known from the previous embodiments, and reference is made to the above explanations in this respect.

The sixth embodiment corresponds to the fourth embodiment in terms of the configuration of the receiving slot 10 . The difference between the fourth and sixth embodiment is that in the sixth embodiment the securing element 18 is provided with two spreader arms 45 which connect to the free ends of the slotted ring section 40 .

A tool can be attached to the spreading arms 45 in order to elastically spread the securing element open.

In the 26 until 30 an assembly according to a seventh embodiment is shown. The same reference numerals are used for the components and features known from the previous embodiments, and reference is made to the above explanations in this respect.

The seventh embodiment largely corresponds to the fourth embodiment, ie it has a receiving slot 10 which extends from the end face 12 of the housing 4 . A split ring is also used as the securing element 18 .

The difference between the fourth and the seventh embodiment is that in the seventh embodiment, the securing element 18 is not pushed into the receiving slot 10 from the front side during assembly, but is pushed from the top of the housing into the receiving slot 5 until the Securing element snaps into the receiving slot 10.

An insertion bevel 50 is provided on the housing for mounting the securing element 18 (see in particular 28 and 29 ) which ensures that the securing element 18 is elastically compressed when it is pushed into the receptacle 5 along the central axis of the latter. For this purpose, a stamp 52 (see 30 ) can be used, which is adjusted in the direction of the arrow P and presses the securing element 18 along the two insertion bevels 50 into the receptacle 5 until it enters the receiving slot 10 and springs back there into its original shape. In this form it is locked in the receiving slot 10 .

What all embodiments have in common is that the housing 4 is designed to be completely closed in the area of the receptacle 5 on the side opposite to the opening of the receptacle 5 . “Completely closed” means that there are no passage openings for slides into the interior of the housing 4, with which contours of the receiving slot 10 and/or the receptacle 5 are produced.

In 31 an embodiment is shown in which the housing 4 is intended to be mounted on a spindle drive. The connection section 8 is designed here as a cylindrical attachment that is fitted in a cylindrical housing 60 of the spindle drive.

In 32 an embodiment is shown in which the housing 4 is attached to a lever 70 . The connection section 8 is sprayed onto a free end of the lever 70 here.

In 33 an exemplary embodiment is shown in which the housing 4 is sprayed onto a screw bushing 80 into which another component 82 is then screwed.

In 34 an exemplary embodiment is shown in which the housing 4 is provided with a crimp attachment onto which a tube 92 can be pushed and crimped with it.

Reference List

1

ball stud

2

bearing ball

3

spigot section

4

Housing

5

Recording

6

storage area

7

storage section

8th

connection section

10

receiving slot

12

face

14

side face

16

material bridge

18

fuse element

20

support surface

22

leg

24

middle section

26

rest design

27

shoulder

28

protrusions

30

guide bevels

32

spreading design

34

chamfering

38

backup shoulder

40

ring section

42

connecting leg

44

locking arms

45

spreading arms

46

retaining grooves

50

lead-in bevel

52

Rubber stamp

60

Housing

70

lever

80

screw socket

82

component

92

Pipe

Claims (14)

Injection-moulded housing (4) for a ball joint, with a receptacle (5) for a ball pivot (1), which has a bearing surface (6) for the bearing ball (2) of the ball pivot (1), and a flat receiving slot (10) for a securing element (18), wherein the receiving slot (10) extends from a side surface (12, 14) of the housing (4) which is adjacent to a surface from which the receptacle (5) extends and wherein the receiving slot (10 ) opens into the receptacle (5) on opposite sides. housing after claim 1 , characterized in that it is closed on the side opposite to the face from which the seat (5) extends. housing after claim 1 or claim 2 , characterized in that the receiving slot (10) is provided with a locking configuration (26; 36) by means of which the securing element (18) can be locked in position. housing after claim 3 , characterized in that the locking configuration has at least one locking edge (26) by means of which the securing element (18) can be locked in a form-fitting manner. housing after claim 4 , characterized in that the locking edge (27) is part of an outer edge of the receiving slot. housing after claim 4 , characterized in that the locking edge (26) is part of a material bridge (16) which is arranged between two sections of the receiving slot (10). housing after claim 3 , characterized in that the locking configuration is formed by at least one holding groove (46) which is accessible on an outside of the housing (4). Housing according to one of the preceding claims, characterized in that it is designed in one piece with a connection section (8) which is used for connection to another component, for example a vehicle body, a holding element or a lever. Assembly with a housing (4) according to one of the preceding claims, and a securing element (18) which is arranged in the receiving slot (10). assembly claim 9 , characterized in that the securing element (18) is a clip-like slide. assembly claim 10 , characterized in that the slide (18) is provided with an external securing shoulder (38) which cooperates with a locking configuration (27) of the housing (4). assembly claim 10 or claim 11 , characterized in that a spreading formation (32) is provided, which can interact with at least one free end of the slider when it is pushed deeper into the housing in an insertion direction beyond an operating position. assembly claim 9 , characterized in that the securing element (18) is a spring clip which is provided with two bent locking arms (44). assembly claim 9 , characterized in that the securing element (18) is a slotted spring ring.

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