Shielded push-pull plug having shielding spring

Abstract

The invention relates to a push-pull plug (1) having a shielding spring (11) which, viewed in the insertion direction, has tab-like projections (15, 16) at the front, wherein the snap-ring (10) has tab-like recesses which correspond to the tab-like projections (15, 16) of the shielding spring (11) and in which the projections (15, 16) of the shielding spring (11) are arranged so that the tab-like projections (15, 16) of the shielding spring (11) together with the tab-like projections (15, 16) of the snap-ring (10) form a completely circumferential projection which comes to bear in the undercut (24) in the panel-mounted socket. In the process, the shielding spring (11), which is made of a metal material, loops through the shielding of the push-pull plug (1) to the panel-mounted socket, wherein the shielding spring (11) is directly or indirectly electrically connected to a shielding of a cable on which the push-pull plug (1) is arranged.

Description

[0001] Shielded PushPull connector with shield spring

[0002] Description

[0003] The invention relates to a shielded push-pull connector which can be plugged into a built-in connector (depending on the design also referred to as a built-in coupling) and thereby locks into place, according to the features of the preambles of the two independent patent claims.

[0004] A known shielded push-pull connector comprises a contact carrier having at least one contact chamber into which a contact partner is inserted. A shielding sleeve made of an electrically conductive material is arranged around the contact carrier. A snap ring is arranged around the shielding sleeve. The snap ring has a fully circumferential projection pointing forward in the plug-in direction (toward the plug face). This projection can be brought into operative connection with an undercut of the panel plug (generally and hereinafter also referred to as the mating connector) when the push-pull connector is inserted into the panel plug.A grip sleeve (hereinafter also referred to as a nut) is arranged around the snap ring, with which the snap ring can be operated when the push-pull plug is to be pulled out of the built-in plug. Through an axial movement of the grip sleeve, its inner contour at the front end acts on a circumferential inclined ramp of the snap ring and presses it down, whereby the fully circumferential projection of the snap ring is pressed down and moved out of the undercut of the built-in plug. Another axial

[0005] Moving the grip sleeve means that the PushPull plug can be completely pulled out of the built-in plug.

[0006] The invention is based on the object of improving a known shielded push-pull connector with regard to its shielding properties.

[0007] This problem is solved according to a first concept in that a shield spring is provided which, viewed in the plug-in direction, has tab-like (tongue-shaped) projections towards the front, wherein the snap ring has tab-like recesses corresponding to the tab-like projections of the shield spring, in which the projections of the shield spring are arranged (engage), so that the tab-like projections of the shield spring together with the tab-like projections of the snap ring form a completely circumferential projection which comes into contact with the undercut of the panel plug, and the shield spring consisting of a metallic material loops the shielding of the PushPull plug through to the panel plug. At the same time, the shield spring is electrically connected directly or indirectly to the shielding of the cable on which the PushPull plug is arranged.

[0008] In a further development of the invention, the tab-like projections extend from a cylindrical base body of the shielding spring. Using the base body, the shielding spring can be designed such that it rests against both the snap ring and the shielding sleeve, or between portions of these two elements. This allows for mechanical arrangement and fixation, as well as, alternatively or additionally, electrical contact between the snap ring (if made of a metal material) and the shielding sleeve (if also made of a metal material), under spring action.

[0009] Alternatively, the shielding spring can be arranged between the shielding sleeve and the nut, at least in partial areas.

[0010] In a further development of the invention, the base body has a slot running parallel to the longitudinal axis of the shielding sleeve. This provides the base body with a spring action when positioned and secured in its installation location. This secures the base body and, under spring action, allows it to permanently establish electrical contact.

[0011] In a further development of the invention, at least one approximately U-shaped spring element (bent portion) extends from the base body. The at least one approximately U-shaped spring element (or more than one such element distributed around the circumference of the base body) increases the spring action. Furthermore, tolerances can be compensated. Furthermore, the shield spring can be adjusted in its installation space between the snap ring (or possibly also the nut) and the shield sleeve, particularly under spring action.

[0012] In a further development of the invention, at least one locking tab is formed on the base body. By means of this at least one locking tab, preferably several locking tabs distributed around the circumference of the base body, the shield spring can be secured in its installation space to the associated elements, such as the snap ring, the nut, and / or the shield sleeve. For this purpose, these elements can have corresponding geometries, such as recesses, circumferential grooves, or the like, into which the at least one locking tab engages when the shield spring has been properly positioned at its installation location.

[0013] According to a second concept, the problem is solved in that a spring ring is inserted in the front area of ​​the PushPull plug, in particular in its snap ring, which spring ring interacts with the undercut, in particular a groove, of the built-in plug after the PushPull plug has been inserted into the built-in plug, wherein the spring ring is designed to be wave-shaped all around.

[0014] Further developments of this second concept with the spring ring are described in connection with the corresponding figures.

[0015] Examples of implementations of the two concepts presented above are shown and described below.

[0016] Figures 1 to 7 show a plug 1 according to the first concept of the invention.

[0017] The plug 1 according to Figure 1 has a shielding sleeve 2, wherein a nut 3 that is movable relative to the shielding sleeve 2, in particular a displaceable nut, is arranged over a portion of the shielding sleeve 2. Behind one end of the nut 3, another housing-like element of the plug 1 is provided, in particular an overmolding 4. A shielded cable 5 emerges from this element, in particular the overmolding 4.

[0018] Figure 2 shows a sectional view of the plug 1. Contacts 6 are also visible, which are arranged in unspecified contact chambers of a contact carrier arranged within the shielding sleeve 2. An electrical conductor 7, more precisely its stripped front end, of the cable 5 is connected to the contact 6. The plug 1 has at least one contact 6, but usually

[0019] several contacts 6 and corresponding electrical conductors 7. Reference number 8 designates a shield of the cable 5, which is connected and electrically contacted in a connection area 9 with the shielding sleeve 2, which consists of an electrically conductive material. A snap ring 10 for implementing the push-pull connection with a mating connector is arranged within the nut 3 and, with its front end, overlaps a portion of the shielding sleeve 2. A shielding spring, which is arranged around the shielding sleeve 2 and is also made of an electrically conductive material, is provided with the reference number 11.

[0020] Figure 3 shows the plug 1, which is plugged together with a mating plug. A front end 12 of the nut 3 is approximately angled and rests on a ramp 13 of the snap ring 10. A front locking tab 14 of the snap ring 10 is operatively connected to a housing 20 of the mating plug. The housing 20 accommodates contacts 21 of the mating plug, which are plugged together with the contacts 6 of the plug 1. In addition, the housing 20 has, for example, a circumferential frame 22, in the area of ​​which a circumferential seal 23 is arranged. The housing 20 is inserted into an opening (not shown), for example in an electronic device, and is sealed there by means of the seal 23. As an alternative to the built-in plug, the mating plug can also be arranged at the end of a cable. The housing 20 has a locking projection 24, which forms an undercut for the front locking tabs 14 of the snap ring 10.The snap ring 10, made of plastic or metal, snaps into the mating connector (also known as a built-in coupling) and is responsible for the holding force of the plug connection. The shielding is routed from the shielding sleeve 2 via the shielding spring 11 directly to the housing 20 of the mating connector (see the illustration in the lower area of ​​the connector 1 in Figure 3). The shielding spring 11 centers the snap ring 10 and the nut 3 on the shielding sleeve 2 and has corresponding projections.

[0021] Centering elements (see Figure 7). Optionally, the centering elements of the shield spring 11 can also be designed as springs and contact the shield sleeve 2 with the snap hook.

[0022] As can be seen in Figure 3, the plug connection consisting of plug 1 and the mating plug can be released again by actuating nut 3. When nut 3 is pushed backward (to the right when viewing Figure 3), the ramp 13 is actuated by the front angled end 12 of nut 3, causing the front end 14 of snap ring 3 to move downward (deflected) so that this front end 14 is no longer located in the area of ​​the undercut 24 of the housing 20 of the mating plug. This allows plug 1 to be pulled out of the mating plug with only minimal force after moving nut 3.Conversely, this means that during mating, the front end 14 of the snap ring 10 is brought into the undercut geometry via the front end 24 of the housing 20, since the front end of the snap ring 10 is deflected slightly in the direction of the longitudinal axis of the connector 1 via the ramp 13 and, after the mating process has been completed, engages behind the undercut formed by the front end 24 of the housing 20 in such a way that the plug connection can no longer be unplugged without actuating the nut 3. This is also referred to as the push-pull process.

[0023] Figure 4 shows the area around the shielding spring 11 in detail. It can be seen that the front end of the shielding spring 11 forms a contact point 15 between the shielding spring 11 and the housing 20 of the mating connector (the built-in coupling). To ensure that this front area of ​​the shielding spring 11 permanently rests against the housing 20, the contact legs (tab-like projections 16) of the shielding spring 11 are designed to be resilient. In addition, in the end area of ​​the shielding spring

[0024] 11 there is an approximately U-shaped bend 17. The lower horizontal leg of this bend 17 when viewed in Figure 4 is

[0025] I not freely floating, but between it and the inner contour of the nut 3 a part of the snap ring 10 is arranged (as can be seen in Figure 3)

[0026] Figure 5 shows the interior of the connector 1, in which the shielding spring 11 is arranged on the rear portion of the shielding sleeve 2. The shielding spring 11 contacts the shielding sleeve 2 via its contact legs 16 and the spring elements. Projecting protrusions on the shielding spring 11 engage in recesses in the shielding sleeve 2 and serve to secure the shielding spring.

[0027] II against twisting. The shielding spring 11 is located with its base body in a groove (or a recessed portion with a smaller diameter) in the shielding sleeve 2, i.e., more precisely, the shielding spring 11 is arranged with its base body over this smaller-diameter portion of the shielding sleeve 2.

[0028] Figure 6 shows the connector 1 after the nut 3 has been installed. It can be seen that the front end of the shielding sleeve 2 remains exposed. Behind and in front of the front end of the nut 3, the front locking tabs of the snap ring 10 and the contact legs 16 of the shielding spring 11 can be seen. These two latter elements alternate around the circumference. The contact legs 16 of the shielding spring 11 are thus positioned between the locking arms (front end 14 of the snap ring 10) and, in turn, serve to secure the snap ring 10 against twisting.

[0029] Figure 7 shows the shielding spring 11 in detail. Here, the front ends of the tab-like projections forming the contact points 15 are visible, which are arranged on the contact legs 16. In addition, the U-shaped elements

[0030] (Bends 17) are visible. Each contact leg 16 protrudes from a base body 18 of the shield spring 11, just like the bends 17. In this exemplary embodiment, the base body 18 is approximately cylindrical in shape, but its circumferential extension is interrupted by a slot 19 to create a spring effect. Alternatively, the base body 18 can also be closed along its circumference. Furthermore, locking tabs (not further described) are arranged in the base body 18.

[0031] Figures 8 to 11 show a connector 1 according to the second concept of the invention. Identical elements for both concepts are provided with the same reference numerals. Furthermore, the plug-in principle based on the push-pull process is the same for both concepts, so that the same elements with the same function are used and applied for the connector 1 according to the second concept as for the connector 1 according to the first concept.

[0032] In Figures 8 and 9, the difference between the connector 1 and the second concept is clearly visible. A spring washer 30 is located in or on the shielding sleeve 2 in the front area of ​​the connector 1. This spring washer 30 is electrically connected to the shielding 9 of the cable 5 via the shielding sleeve 2, which is made of a metallic material.

[0033] When examining Figure 10, it can be seen that the spring ring 30 comes into contact with the inner contour of the housing 20 of the mating connector when the connector 1 has been inserted into the mating connector and locked by means of the snap ring 10. Here, too, the snap ring 10, or more precisely its front end, can be actuated by moving the nut 3, thereby dissolving the undercut geometry in the front end 24 of the mating connector and allowing the connector 1 to be pulled out of the mating connector.

[0034] Figure 11 shows the connector 1 according to the second concept with a view of its mating face, wherein it can be seen, among other things, that the contacts are arranged in a contact carrier, wherein the contact carrier is arranged within the shielding sleeve 2 (and also further along within the snap ring 10 and thus also within the nut 3). It can also be seen that the spring ring 30 is approximately wave-shaped. With each valley, the spring ring 30 rests against its associated contact surface on the shielding sleeve 2, in particular in the base of a groove in the shielding sleeve 2, and forms a contact point there. The high points of the spring ring 30 next to the respective valley form contact surfaces, more precisely contact points, of the spring ring 30 in the direction of the inner contour of the housing 20 of the mating connector.Thus, in the assembled state, the spring ring 30 effects an electrical contact from the shielding 9 of the cable 5 in the direction of the shielding of the mating connector, since the spring ring 30 comes into electrical contact with the housing 20 made of a metallic material of the mating connector.

[0035] List of reference symbols

[0036] 1. Plug

[0037] 2. Shielding sleeve

[0038] 3, Nut (grip sleeve)

[0039] 4. Overmolding

[0040] 5. Cable

[0041] 6. Contact

[0042] 7. Electrical conductor

[0043] 8. Shielding

[0044] 9. Connection area

[0045] 10. Snap ring

[0046] 11. Umbrella spring

[0047] 12. front end

[0048] 13. Ramp

[0049] 14. front end

[0050] 15. tab-like projection (contact point)

[0051] 16. tab-like projection (contact leg)

[0052] 17. Bending

[0053] 18. Basic body

[0054] 19. Slot

[0055] 20. Housing

[0056] 21. Contact

[0057] 22. surrounding frame

[0058] 23. Poetry

[0059] 24. Front end

[0060] 30. Spring ring

Claims

Patent claims 1. Shielded push-pull connector (1) comprising a contact carrier having at least one contact chamber into which a contact partner (6) is inserted, wherein a shield sleeve (2) made of an electrically conductive material is arranged around the contact carrier, wherein a snap ring (10) is arranged around the shield sleeve (2) having a fully circumferential projection (12) pointing forward in the insertion direction, which can be brought into operative contact with an undercut (24) of a panel-mount connector, wherein a grip sleeve (3) is further arranged around the snap ring (10) with which the snap ring (10) can be actuated when the push-pull connector (1) is to be pulled out of the panel-mount connector, wherein by an axial movement of the grip sleeve (3) its front end (12) acts on a circumferential inclined ramp (13) of the snap ring (10) and thereby presses it down,the fully circumferential projection (14) of the snap ring (10) is pressed down and thereby moved out of the undercut (24) of the insert connector, wherein a further axial displacement of the handle sleeve (3) causes the push-pull connector (1) to be completely pulled out of the insert connector, characterized in that a tab spring (11) is provided which, viewed in the insertion direction, has tab-like projections (15, 16) extending forward, wherein the snap ring (10) has tab-like recesses corresponding to the tab-like projections (15, 16) of the tab spring (11), in which the projections (15, 16) of the tab spring (11) are arranged, so that the tab-like projections (15, 16) the shielding spring (11) together with the tab-like projections (15, 16) of the snap ring (10) form a fully circumferential projection which comes into contact with the undercut (24) of the panel-mount connector and thereby the shielding spring (11) made of a metallic material passes through the shielding of the push-pull connector (1) to the panel-mount connector, wherein the shielding spring (11) is electrically connected directly or indirectly to a shielding of a cable on which the push-pull connector (1) is arranged.

2. Shielded push-pull connector (1) according to claim 1, characterized in that the tab-like projections (15, 16) originate from a cylindrical base body (18) of the shield spring (11).

3. Shielded push-pull connector (1 ) according to claim 2, characterized in that the base body (18) has a slot (19) extending parallel to the longitudinal axis of the shielding sleeve (11).

4. Shielded push-pull connector (1) according to claim 2 or 3, characterized in that at least one approximately U-shaped spring element (18) extends from the base body (18).

5. Shielded push-pull connector (1) according to claim 2, 3 or 4, characterized in that at least one locking tab is formed on the base body (18).

6. Shielded push-pull connector (1) comprising a contact carrier having at least one contact chamber into which a contact partner (6) is inserted, wherein a shield sleeve (2) made of an electrically a conductive material is arranged, wherein a snap ring (10) is arranged around the shield sleeve (2), the snap ring having a fully circumferential projection (12) pointing forward in the insertion direction, which can be brought into operative contact with an undercut (24) of a panel-mount connector, wherein a handle sleeve (3) is further arranged around the snap ring (10), with which the snap ring (10) can be actuated when the push-pull connector (1) is to be pulled out of the panel-mount connector, wherein by an axial movement of the handle sleeve (3) its front end (12) acts on a circumferential inclined ramp (13) of the snap ring (10) and thereby presses it down, thereby pressing down the fully circumferential projection (14) of the snap ring (10) and thereby moving it out of the undercut (24) of the panel-mount connector, wherein a further axial displacement of the handle sleeve (3) causesthat the push-pull connector (1) can be completely pulled out of the panel-mount connector, characterized in that a spring ring (30) is inserted in the front area of ​​the push-pull connector (1), which, after the push-pull connector (1) is inserted into the panel-mount connector, interacts with the undercut therein, wherein the spring ring (30) is formed circumferentially in a wave-like shape.

7. Shielded push-pull connector ( 1 ) according to claim 6, characterized in that the spring ring (30) is arranged in the snap ring (10).

8. Shielded push-pull connector (1) according to claim 6, characterized in that the spring ring (30) is arranged in the shielding sleeve (2).

9. Shielded push-pull connector (1) according to claim 6, 7 or 8, characterized in that the undercut of the panel-mount connector is a groove. 10, Shielded push-pulse connector (1) according to one of claims 6 to 9, characterized in that the spring ring (30) is closed all around.

11. Shielded push-pull connector (1) according to one of claims 6 to 9, characterized in that the spring ring (30) is interrupted around its circumference.

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