Plug connector

Abstract

The invention relates to a plug connector (1) comprising: a housing (2) having an interior space (3) which is delimited by a lateral wall (4); an electrical contact element (5) arranged in the interior space (3); as well as a first securing element (8) and a second securing element (9), wherein the housing (2) has at least one first and at least one second housing-side receiving structure (10, 11), while the contact element (5) has a first and a second contact-element-side receiving structure (12, 13), wherein, when the contact element (5) is inserted, the first securing element (8) engages with the first housing-side receiving structure (10) and with the first contact-element-side receiving structure (12) such that the contact element (5) is secured to the housing (2) by the first securing element (8), and the second securing element (9) engages with the second housing-side receiving structure (11) and with the second contact-element-side receiving structure (13) such that the contact element (5) is secured to the housing (2) by the second securing element (8).

Description

[0001] TITLE

[0002] CONNECTORS

[0003] TECHNICAL FIELD

[0004] The present invention relates to a connector according to claim 1 and a method for assembling said connector according to claim 17.

[0005] STATE OF THE ART

[0006] Connectors have become known from the state of the art.

[0007] PRESENTATION OF THE INVENTION

[0008] The present invention is based on the object of providing a connector with a contact element that has improved properties. In particular, the securing, positioning, or mounting of the contact element in the housing is to be improved.

[0009] These and other objects are achieved by the connector according to claim 1. Accordingly, a connector comprises a housing with an interior space defined by a side wall, an electrical contact element arranged in the interior space with a contact portion and a connection portion, as well as a first securing element and a second securing element. The housing has at least one first housing-side receiving structure and at least one second housing-side receiving structure. Furthermore, the contact element has a first contact-element-side receiving structure and a second contact-element-side receiving structure. When the contact element is inserted, the first securing element engages with the first housing-side receiving structure and with the first contact-element-side receiving structure in such a way that the contact element is fixed to the housing by means of the first securing element.When the contact element is inserted, the second securing element engages with the second housing-side receiving structure and with the second contact element-side receiving structure in such a way that the contact element is fixed to the housing with the second securing element.

[0010] The arrangement of two securing elements, both of which secure the contact element to the housing, has the advantage of increasing safety in the event of an unintentional disconnection.

[0011] The contact section serves to mediate an electrical contact between the electrical contact element and another contact element in another connector which can be connected to the claimed connector.

[0012] The contact section can be designed as a socket opening or as a plug pin.

[0013] The connection section is used to connect a cable to the contact element.

[0014] The term “fixed” means that the contact element is firmly connected to the housing by the securing element or is firmly secured to the housing.

[0015] The terms "first securing element" and "second securing element" simply refer to two different securing elements. The terms "first" and "second" serve to define and assign characteristics to the respective securing element and do not indicate the assembly sequence.

[0016] The interior has a shape into which the contact element can be inserted in the correct position. The shape of the interior is designed in sections to complement or match the contact element.

[0017] Preferably, the first securing element partially protrudes from the interior and is thus accessible from outside the housing. Preferably, the second securing element is located entirely within the interior.

[0018] Preferably, the side wall has at least one recess through which the first securing element protrudes from the interior. An actuating portion of the securing element preferably lies outside the housing when the securing element is inserted. Preferably, the actuating portion can be gripped by a tool, so that a force can be applied with the tool to remove the first securing element. Alternatively, the first securing element can be gripped and removed without the aid of a tool.

[0019] The second securing element is preferably accessible through a recess in the side wall. A tool, for example, can be inserted into the interior through the recess to break the connection between said securing element and the housing or contact element.

[0020] This arrangement has the advantage that the first securing element can be removed, while the other securing element continues to secure the contact element to the housing. The fact that the second securing element is located inside the housing has the advantage that the connection between the contact element and the housing cannot be accidentally broken; instead, a specialist must use the appropriate tool.

[0021] Preferably, at least one of the two securing elements provides a positive connection between the housing and the contact element.

[0022] The corresponding securing element therefore engages positively in the respective housing-side receiving structure and in the respective contact element-side receiving structure.

[0023] Preferably, the first securing element is spaced apart from the contact section. Preferably, the second securing element at least partially surrounds the contact section.

[0024] Preferably, the shape of the contact portion defines a plug-in direction, wherein the first securing element can be inserted into the first housing-side receiving structure and into the first contact element-side receiving structure in the plug-in direction; and wherein the second securing element can be inserted into the housing in a direction transverse to the plug-in direction.

[0025] Preferably, the first securing element is formed separately from the contact element, such that the engagement between the first securing element and the contact element and the housing can only be achieved after the contact element has been inserted into the interior. This means that the first securing element can only be brought into engagement with the first housing-side receiving structure and the first contact element-side receiving structure once the contact element has been inserted.

[0026] In a first preferred variant, the second securing element is connected to the contact element in such a way that the second securing element and the contact element can be inserted together into the interior space, wherein the engagement between the second securing element and the contact element can be provided before the contact element is inserted into the interior space, and wherein the engagement between the second securing element and the housing can be provided upon insertion of the contact element. This means that the second securing element is already engaged with the second contact-element-side receiving structure before insertion into the interior space and is brought into engagement with the second housing-side receiving structure upon insertion into the interior space.

[0027] In a second preferred variant, the second securing element is connected to the housing in such a way that the engagement between the second securing element and the housing can be established before the contact element is inserted into the interior space, and that the engagement between the second securing element and the contact element can be established during the insertion of the contact element. This means that the second securing element is already engaged with the second housing-side receiving structure before being inserted into the interior space and is brought into engagement with the second contact-element-side receiving structure during insertion into the interior space.

[0028] Preferably, the first securing element has at least one securing portion, wherein said securing portion engages both in the first housing-side receiving structure and in the first contact-side receiving structure.

[0029] Preferably, the securing section of the first securing element is designed as a rigid securing section.

[0030] The term “rigid securing section” means that deformation of the rigid securing section is not intended when the securing element is inserted as intended.

[0031] Preferably, the at least one securing portion has a substantially or predominantly cylindrical shape, wherein the cylindrical shape preferably has a circular or oval cross-section. The first housing-side receiving structure, in which the securing portion engages, has a cross-section designed to match the cross-section of the cylindrical shape.

[0032] Preferably, the first securing element has two securing sections spaced apart from one another.

[0033] Preferably, the first securing element has at least one locking structure, with which the first securing element can be locked to the housing and / or the contact element. To disassemble the first securing element, a force must be applied to release the locking connection.

[0034] Preferably, the second securing element has at least two securing sections, wherein at least one of the at least two securing sections engages in the second housing-side receiving structure and wherein at least one other of the at least two securing sections engages in the second contact element-side receiving structure.

[0035] Preferably, the at least two securing sections of the second securing element are resilient, in particular designed as resilient locking tabs. Said receiving structures are formed as recesses on the housing or on the contact element, with the locking tabs engaging in the locking recesses.

[0036] Preferably, the at least two securing sections are designed as resilient locking tabs, and the resilient locking tabs are oriented with respect to the direction in which the contact element can be inserted into the housing in such a way that the locking tabs are resiliently pivoted from their initial position during the insertion process. Preferably, the locking tabs spring back to their initial position upon reaching the respective receiving structure and engage with the respective receiving structure.

[0037] Preferably, the second securing element has a U-shaped form with a base leg and two side legs projecting from the base leg, wherein the securing sections are arranged on the side legs.

[0038] Preferably, the contact element has bearing surfaces on which the base leg and / or the side legs lie flat against the contact element.

[0039] Preferably, the base leg and the bearing surface are rounded at the point where the base leg comes to rest.

[0040] Preferably, the side legs are designed as straight tabs and the bearing surface on which the tabs rest are designed as flat bearing surfaces.

[0041] Preferably, the first securing element extends transversely through the interior space such that if the first securing element is inserted into the first housing-side receiving structure before the contact element is inserted, insertion of the contact element can be prevented.

[0042] A method for assembling a plug connector as described above, wherein in a first step the second securing element is connected to the housing or to the contact element, wherein in a second step the contact element is inserted into the housing, wherein after the contact element has been inserted the contact element is fixed to the housing by engagement of the second securing element in the second housing-side receiving structure and in the second contact element-side receiving structure; and wherein in a third step the first securing element is inserted into the first housing-side receiving structure and in the first contact element-side receiving structure, wherein after the first securing element has been inserted the contact element is additionally fixed to the housing with the first securing element.

[0043] Particularly preferably, the second securing element is already located on the contact element during assembly, with the second securing element engaging the second contact-element-side receiving structure. Once the contact element has reached the correct position in the housing, the second securing element engages the second housing-side receiving structure, thereby securing the contact element to the housing via the second securing element.

[0044] Further embodiments are specified in the dependent claims.

[0045] BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Preferred embodiments of the invention are described below with reference to the drawings, which are for illustrative purposes only and are not to be construed as limiting. In the drawings:

[0047] Fig. 1 is a perspective view of a connector according to an embodiment of the present invention before assembly;

[0048] Fig. 2 is a perspective view of a connector according to Figure 1 during assembly;

[0049] Fig. 3 is a perspective view of a connector according to Figure 1 after assembly;

[0050] Fig. 4 is a partially sectioned view of the connector of the preceding figures; and

[0051] Fig. 5 is a sectional view along section line IV-IV of Figure 4.

[0052] DESCRIPTION OF PREFERRED EMBODIMENTS

[0053] The figures show a connector 1 according to an embodiment of the present invention. As shown in Figure 1, the connector 1 comprises a housing 2, an electrical contact element 3, a first securing element 8, and a second securing element 9. The two securing elements 8, 9 are designed to hold or secure the contact element 5 in the interior space 3.

[0054] The housing 2 has an interior space 3 which is delimited on the outside by a side wall 4. The contact element 5 is inserted into the interior space 3 and the housing 2 surrounds the contact element 5 on the outside in the inserted state. The housing 2 essentially has two access openings 23, 24. The contact element 5 can be inserted into the interior space 3 via one access opening, designated by the reference number 23. A contact element of another connector (not shown in the figures) can be guided to the contact element 5 via the other access opening, designated by the reference number 24. The electrical contact element 5 has a contact section 6 and a connection section 7. The contact section 6 is designed here as a socket. A contact part 25 is arranged in the socket and establishes electrical contact between the socket shown here and a plug pin that projects into the socket.However, the contact section 6 can also be designed as a plug pin. An electrically conductive cable 26 is arranged on the connection section 7.

[0055] Starting from the position shown in Figure 1, the contact element 5 is pushed into the interior space 3. Figure 2 shows the contact element 5 in the pushed-in state. In the pushed-in state, the first securing element 8 is not yet in engagement with the housing 2 or the contact element 3, while the second securing element 9 is already in contact with the housing 2 and the contact element 5. When the contact element 5 is in the pushed-in state, the first securing element 8 can be pushed in, starting from the position shown in Figure 2. Figure 3 shows the first securing element 8 in the secured position, such that the first securing element 8 secures the contact element 5 to the housing 2. During assembly, engagement is provided first via the second securing element 9 and then via the first securing element 8.

[0056] Figure 3 shows that the first securing element 8 partially protrudes from the interior space 3 and that parts of the first securing element 8 are accessible from outside the housing 2. This part can be grasped by a user so that the first securing element 8 can be separated from the housing 2 or from the contact element 5.

[0057] The second securing element 9 lies entirely within the interior space 3 of the housing 2. The housing 2 can optionally have at least one recess 27 through which the second securing element 9 is accessible, so that the connection established by the second securing element 9 between the housing 2 and the contact element 5 can be removed. In the embodiment shown, two recesses 27 are arranged laterally to the contact section 6. Reference is made in this regard to Figure 4, where the recesses 27 are shown.

[0058] Preferably, both the first securing element 8 and the second

[0059] Securing element 9 is designed such that a positive connection is provided between the housing 2 and the contact element 5.

[0060] Figure 4 shows a partially sectioned view of the connector 1. The first securing element 8 is spaced apart from the contact section 6 and engages the contact element 5 between the contact section 6 and the connection section 7. In other words, this means that the first contact-element-side receiving structure 12 is located between the contact section 6 and the connection section 7. The connection section 7 in Figure 4 is concealed by the side wall 4.

[0061] The second securing element 9 rests against bearing surfaces 20 located on the outside of the contact element 5 and at least partially surrounds the contact section 6. In other words, this means that the second contact-element-side receiving structure 13 is located on an outside of the contact element 5.

[0062] The shape of the contact section 6 defines a plug-in direction S. In Figure 4, the plug-in direction S runs perpendicular to the plane of the drawing sheet. In the embodiment shown, the first securing element 8 is arranged such that it can be inserted into the first housing-side receiving structure 10 and into the first contact-element-side receiving structure 12 in a direction parallel to the plug-in direction.

[0063] As can be seen from the figures, the first securing element 8 is formed separately from the contact element 5, such that the engagement between the first securing element 8 and the contact element 5 as well as the housing 2 can only be provided after the contact element 5 has been inserted into the interior space 3. This means that the securing element 8 can only be brought into engagement after the contact element 5 has been inserted into the respective first housing-side receiving structure 10 and the first contact element-side receiving structure 12. The first securing element 8 extends here transversely through the interior space 3, such that if the first securing element 8 is inserted before the contact element 5 is inserted into the first housing-side receiving structure 10, insertion of the contact element 5 can be prevented.

[0064] As can be seen from the figures, in particular from Figure 1, the second securing element 9 is connected to the contact element 5, so that the second securing element 9 and the contact element 5 can be inserted together into the interior space 3. The engagement between the second securing element 9 and the contact element 5 can be provided before the contact element 5 is inserted into the interior space 3, and the engagement between the second securing element 9 and the housing 2 can be provided when the contact element 5 is inserted into the interior space 3. This means that the engagement between the securing element 9 and the second contact element-side receiving structure 13 is provided before the contact element 5 is inserted into the interior space, and that the engagement between the second securing element 9 and the second housing-side receiving structure 11 is provided when the contact element 5 is inserted.

[0065] The preferred embodiment of the first securing element 8 shown in the figures will now be described in more detail with reference to Figures 1 to 5.

[0066] The first securing element 8 preferably has at least one securing section 14. In the embodiment shown, two securing sections 14 are provided. The at least one securing section 14 engages both in the first housing-side receiving structure 10 and in the first contact-element-side receiving structure 12. The engagement is evident from the sectional view in Figure 5. The at least one securing section 14 extends through the first contact-element-side receiving structure 12 and engages in the housing-side receiving structure 10. Here, sections of the housing-side receiving structure 10 are located on both sides of the contact element 5.

[0067] The at least one securing section 14 of the first securing element 8 is preferably designed as a rigid securing section 14.

[0068] The at least one securing section 14 is followed by an actuating section 28, which represents the part of the first securing element 8 that is accessible from outside the housing 2 when the securing element 8 is inserted.

[0069] As mentioned, the first securing element 8 here has two spaced-apart securing sections 14. The two spaced-apart securing sections 14 extend away from the said actuating section 28 and run parallel to each other.

[0070] Preferably, the at least one securing section 14 has a substantially cylindrical shape, wherein the cylindrical shape preferably has a circular or oval cross-section, and the first housing-side receiving structure 10, in which the securing section 14 engages, has a cross-section designed to match the cross-section of the cylindrical shape. Likewise, the first contact-element-side receiving structure 12 can have a corresponding shape. In the embodiment shown, the contact-element-side receiving structure 12 is designed such that both securing sections 14 extend through the single contact-element-side receiving structure 12.

[0071] Furthermore, the first securing element 8 has at least one optional locking structure 15. This locking structure 15 is arranged here on at least one securing section 14. Figure 5 shows the interaction of the at least one locking structure 15 with the housing 2. The at least one locking structure 15 abuts against a stop edge 29 of the housing 2. In more general terms, the first securing element 8 can be locked to the housing 2 with its locking structure 15. In other embodiments, the first securing element 8 can also be locked to the contact element 5.

[0072] The preferred embodiment of the second securing element 9 shown in the figures will now be described in more detail with reference to Figures 1 to 5.

[0073] The second securing element 9 has at least two securing sections 16. The securing sections 16 are shown in Figures 1 and 4. At least a first of the at least two securing sections 16 engages in the second housing-side receiving structure 11, and at least one further of the at least two securing sections 16 engages in the second contact-element-side receiving structure 13. In the embodiment shown, a first and a further securing section 16 are arranged on each side of the contact section 6.

[0074] Preferably, the at least two securing sections 16 are designed to be resilient, in particular as resilient locking tabs 17. The second housing-side receiving structure 11 and the second contact element-side receiving structure 13 are designed as locking recesses 22 into which the locking tabs 17 engage.

[0075] The spring-elastic locking tabs 17 are oriented with respect to the direction in which the contact element 5 can be inserted into the housing 2 in such a way that the locking tabs 17 are resiliently pivoted from their initial position during the insertion process, and that the locking tabs 17 spring back to their initial position upon reaching the respective receiving structure 11, 13 and engage in the respective receiving structure 11, 13. This engagement secures the contact element 5 to the housing 2.

[0076] The second securing element 9 preferably has a U-shaped form with a base leg 18 and two side legs 19 protruding from the base leg 18. The securing sections 16 are arranged on the side legs 19. The contact element 5 has bearing surfaces 20, against which the base leg 18 and / or the side legs 19 rest flat against the contact element 5. The base leg 18 and the bearing surface 20 are rounded with a curve 21 at the point where the base leg 18 comes to rest. The side legs 19 are designed as straight tabs, and the bearing surface 20, on which the tabs come to rest, is designed as flat bearing surfaces 20.

[0077] The first fuse element 8 and the housing 2 are preferably made of an electrically non-conductive material, such as a plastic. The second fuse element 9 is preferably made of spring steel. The contact element 5 is made of an electrically conductive material.

[0078] A method for assembling a connector according to the above description is characterized in that, in a first step, the second securing element 9 is connected to the housing 2 or to the contact element 5; in a second step, the contact element 5 is inserted into the housing 2; after the contact element 5 has been inserted, the contact element 5 is secured to the housing 2 by the second securing element 9 engaging the second housing-side receiving structure 11 and the second contact element-side receiving structure 13; and in a third step, the first securing element 8 is inserted into the first housing-side receiving structure 10 and the first contact element-side receiving structure 12; after the first securing element 8 has been inserted, the contact element 5 is additionally secured to the housing 2 with the first securing element 8. LIST OF REFERENCE SYMBOLS

[0079] Connector 25 contact part

[0080] Housing 26 Cable

[0081] Interior 27 Recess

[0082] Side wall 28 operating section

[0083] Contact element 29 stop edge

[0084] Contact section

[0085] Connection section first securing element second securing element first housing-side receiving structure second housing-side

[0086] Receiving structure first contact element-side receiving structure second contact element-side receiving structure securing section first securing element latching structure

[0087] Securing section second securing element locking tabs

[0088] Base leg Side leg Bearing surfaces Curvature Recess Access opening

[0089] Access opening

Claims

PATENT CLAIMS 1. A plug connector (1) comprising a housing (2) with an interior space (3) delimited by a side wall (4), an electrical contact element (5) arranged in the interior space (3) with a contact section (6) and a connection section (7), as well as a first securing element (8) and a second securing element (9), wherein the housing (2) has at least one first housing-side receiving structure (10) and at least one second housing-side receiving structure (11), wherein the contact element (5) has a first contact-element-side receiving structure (12) and a second contact-element-side receiving structure (13), wherein when the contact element (5) is inserted, the first securing element (8) is in engagement with the first housing-side receiving structure (10) and with the first contact-element-side receiving structure (12), such that the contact element (5) is fixed to the housing (2) by means of the first securing element (8);and wherein, when the contact element (5) is inserted, the second securing element (9) is in engagement with the second housing-side receiving structure (11) and with the second contact element-side receiving structure (13), such that the contact element (5) is fixed to the housing (2) by means of the second securing element (9); 2. Connector (1) according to claim 1, characterized in that the first securing element (8) partially protrudes from the interior (3) and is thus accessible from outside the housing (2) and / or that the second securing element (9) lies completely in the interior (3) of the housing (2).

3. Connector (1) according to one of the preceding claims, characterized in that at least one of the two securing elements (8, 9) provides a positive connection between the housing (2) and the contact element (5).

4. Connector (1) according to one of the preceding claims, characterized in that the first securing element (8) is spaced from the contact section (6) and / or that the second securing element (9) at least partially surrounds the contact section (6).

5. Connector (1) according to one of the preceding claims, characterized in that the shape of the contact section (6) defines a plug-in direction (S), wherein the first securing element (8) can be inserted into the first housing-side receiving structure (10) and into the first contact-element-side receiving structure (12) in a direction parallel to the plug-in direction; and wherein the second securing element (9) can be inserted into the housing (2) in a direction transverse to the plug-in direction (S).

6. Connector (1) according to one of the preceding claims, characterized in that the first securing element (8) is formed separately from the contact element (5), such that the engagement between the first securing element (8) and the contact element (5) as well as the housing (2) can only be provided after the contact element (5) has been inserted into the interior space (3); and / or that the second securing element (9) is connected to the contact element (5) such that the second securing element (9) and the contact element (5) can be inserted together into the interior space (3), wherein the engagement between the second securing element (9) and the contact element (5) can be provided before the contact element is inserted into the interior space (3), and that the engagement between the second securing element (9) and the housing (2) can be provided upon insertion of the contact element (5);and / or that the second securing element (9) is connected to the housing (2) in such a way that the engagement between the second securing element (9) and the housing (2) can be provided before the contact element is inserted into the interior space (3) and that the engagement between the second securing element (9) and the contact element (5) can be provided when the contact element (5) is inserted.; 7. Connector (1) according to one of the preceding claims, characterized in that the first securing element (8) has at least one securing section (14), wherein said securing section (14) engages both in the first housing-side receiving structure (10) and in the first contact element-side receiving structure (12).

8. Connector (1) according to claim 7, characterized in that the The securing section (14) of the first securing element (8) is designed as a rigid securing section (14); and / or that the first securing element (8) has two securing sections (14) spaced apart from one another.

9. Connector (1) according to claim 7 or 8, characterized in that the at least one securing portion (14) has a cylindrical shape, wherein the cylindrical shape preferably has a circular or an oval cross-section, and in that the first housing-side receiving structure (10) in which the securing portion (14) engages has a cross-section designed to match the cross-section of the cylindrical shape.

10. Plug connector (1) according to one of the preceding claims, characterized in that the first securing element (8) has at least one latching structure (15), with which at least one latching structure (15) the first securing element (8) can be latched to the housing (2) and / or to the contact element (5).

11. Plug connector (1) according to one of the preceding claims, characterized in that the second securing element (9) has at least two securing sections (16), wherein at least one of the at least two securing sections (16) engages in the second housing-side receiving structure (11) and wherein at least one other of the at least two securing sections (16) engages in the second contact element-side receiving structure (13).

12. Connector (1) according to claim 11, characterized in that the at least two securing sections (16) are designed to be spring-elastic, in particular as spring-elastic locking tabs (17).

13. Plug connector (1) according to claim 11, characterized in that the at least two securing sections (16) are designed as spring-elastic locking tabs (17), and that the spring-elastic locking tabs (17) are oriented with respect to the direction in which the contact element (5) can be inserted into the housing (2) in such a way that the locking tabs (17) are resiliently pivoted from the starting position during the insertion process, and that the locking tabs (17) spring back into the starting position when the respective receiving structure (11, 13) is reached and engage in the respective receiving structure (11, 13).

14. Connector (1) according to one of claims 11 to 12, characterized in that the second securing element (9) has a U-shaped form with a base leg (18) and two side legs (19) projecting from the base leg (18), wherein the securing sections (16) are arranged on the side legs (19).

15. Plug connector (1) according to claim 14, characterized in that the contact element (5) has bearing surfaces (20) on which the base leg (18) and / or the side legs (19) lie flat against the contact element (5); and / or that the base leg (18) and the bearing surface (20) are rounded with a curve (21) at the point where the base leg (18) comes to rest; and / or that the side legs are designed as straight tabs and that the bearing surface (20) on which the tabs come to rest are designed as flat bearing surfaces (20).

16. Connector (1) according to one of the preceding claims, characterized in that the first securing element (8) extends transversely through the interior (3) in such a way that if the first securing element (8) is inserted into the first housing-side receiving structure (10) before the contact element (5) is inserted, insertion of the contact element (5) can be prevented.

17. Method for assembling a connector according to one of the preceding claims, characterized in that in a first step, the second securing element (9) is connected to the housing (2) or to the contact element (5), that in a second step, the contact element (5) is inserted into the housing (2), wherein after insertion of the contact element (5), the contact element (5) is fixed to the housing (2) by engagement of the second securing element (9) in the second housing-side receiving structure (11) and in the second contact-side receiving structure (13); and that in a third step, the first securing element (8) is inserted into the first housing-side receiving structure (10) and into the first contact-element-side receiving structure (12), wherein after insertion of the first securing element (8), the contact element (5) is additionally connected to the first securing element (8) to the housing (2).

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