MECHANICAL LOCKING ELEMENT

Description

[0001] The present invention relates to a closure element, in particular a tank ring closure, according to the preamble of claim 1. This is intended for fastening a piece of luggage or a motorcycle accessory to a motorcycle, in particular its tank or rear.

[0002] A closure element comprises a motorcycle-side adapter, in particular a tank ring adapter, which can be firmly connected to the motorcycle, in particular its tank or rear (area), and carries two receiving lugs arranged at a distance from one another and preferably parallel to one another. The closure element further comprises a locking device which can be firmly connected to the rear of the luggage item or the motorcycle accessory. The locking device comprises a housing which can be statically secured to a piece of luggage or motorcycle accessory and a slider mounted in the housing. The housing comprises openings into which the receiving lugs can be inserted.

[0003] The slider on the housing is preferably movable from a holding position to an unlocking position in order to hold the receiving cam in the opening when the slider is in the holding position.

[0004] EP2289783A1 discloses an adapter for attaching objects to the tank of a motorcycle. The adapter consists of a lower part that can be connected to the tank of the motorcycle and an upper part that can be coupled to the object to be attached. Prior art document DE 10 2021037 912 B4 discloses a tank ring closure in which elongated retaining elements of a tank ring adapter can be inserted into openings in a connecting element in order to secure the tank ring adapter to the connecting element. Although the connecting element has a movably mounted element for releasing the connection, the parts of the connecting element are static during the connection process. The retaining element is connected to the connecting element exclusively via a very strong magnetic attraction between the two parts, which forces the retaining element of the tank ring adapter into the intended position in the openings of the connecting element.

[0005] The retaining elements are held in the openings of the connecting element by a combination of lateral snap connections in the connecting element and magnetic attraction.

[0006] By displacing the movably mounted element on which the magnets of the connecting element are provided, the same-polar magnetic parts of the holding elements and the connecting element are brought towards each other, which promotes repulsion of the parts and separates them from each other.

[0007] Due to the attraction of the strong magnets, a very large amount of force is required to move them relative to each other. This ensures, among other things, that when releasing the connection, considerable force is required to displace the locking element and release the tank ring adapter from the locking device.

[0008] The locking element therefore reacts to the repelling magnets between the locking element and the connecting area on the tank ring closure. There is no fixed position for the movably mounted element, from which it can only be moved by releasing a locking connection. The movable element is thus freely movable on the connecting element.

[0009] During testing of this tank ring closure, it was found that the force required to release the retaining elements from the connecting element by displacing the movably mounted element can lead to an uncontrolled release process, which is associated with an increased risk of injury.

[0010] The present invention has for its object to provide an alternative closure mechanism for a closure element which overcomes the disadvantages of the prior art.

[0011] The present invention solves the problem by the characterizing features of the tank ring closure according to claim 1.

[0012] These are, that at least one locking element is arranged on the housing, which interacts with a spring body of the slide and is designed to hold the slide in the unlocking position and that the receiving cams have a stop which is adapted to interact with the spring body when the receiving cams are inserted into the opening and to release the latter from the locking element.

[0013] Preferred embodiments are specified in the dependent claims.

[0014] According to the present invention, a multi-part closure element is therefore provided which enables force-free insertion of the receiving cams into the openings of the housing of the locking device.

[0015] Since the slider is moved into the unlocking position against a spring force and is held in this position, the release of the spring body from the locking connection releases a restoring force which moves the slider back into the holding position.

[0016] According to the present invention, the unlocking position refers to the position of the slider in which the receiving cams can be released from the openings of the housing.

[0017] Through a physical interaction of the receiving cam with the spring body, the slider is released from its unlocking position and the receiving cam is held by the slider in its holding position.

[0018] By simply manually moving the slider to the unlocking position, the slider can be secured in this position. The locking device, or the luggage or motorcycle accessory connected to the locking device, can then be removed from the motorcycle-side adapter using both hands. The prior art solution requires simultaneously securing the luggage with a second hand when attempting to unlock it, since the connection between the tank ring adapter and the locking device, due to the repelling magnets, immediately causes the locking device to pop out of the tank ring adapter when the connection is released.

[0019] Furthermore, there is no provision for locking the locking element in an unlocked position, which requires the user to continuously maintain the locking element in an unlocked position while the luggage is removed from the tank ring adapter. This has the disadvantage that only one hand is available when removing the luggage or motorcycle accessory from the motorcycle tank.

[0020] This security problem is solved by the present invention.

[0021] According to the present invention, for the sake of simplicity, reference is made in most cases to a tank ring closure and / or a tank ring adapter as one of the possible embodiments of the present invention. However, the disclosure of the present invention also includes the fact that whenever the terms "tank ring closure" or "tank ring adapter" are mentioned, a "closure element" or a "motorcycle-side adapter" is meant, respectively, since the luggage / accessory can also be attached to another area of ​​the motorcycle using the present invention, in particular wherever the closure element according to the invention can be attached to the motorcycle.

[0022] In the description and claims, the terms "tank ring closure" and "closure element" or "tank ring adapter" and "motorcycle-side adapter" are interchangeable and are to be understood in the general, broad sense of closure element or motorcycle-side adapter. Limiting the invention to a closure element for the tank of a motorcycle is not intended, nor does it do justice to the possible applications of the invention. The overall disclosure of the present invention is based on these above principles. This also applies to statements regarding a specific embodiment according to the figures and the associated description.

[0023] Preferably, the receiving cam is an elongated body that can be inserted into the opening of the locking device parallel to its longitudinal direction. This allows for a particularly good distribution of the lever forces between the locking device and the tank ring adapter.

[0024] According to the present invention, the opening can be understood as an actual recess in the housing of the locking element. However, the opening can also be understood as an internal area of ​​the housing, which extends inward from the opening recess in the housing and can describe the area in which the respective receiving cam can be secured in the housing.

[0025] According to a preferred embodiment of the present invention, the slider is mounted on the housing so that it can move along guide grooves. One guide groove—but preferably at least two guide grooves—can be provided. Guide grooves enable reliable movement of the slider in / on the housing, thereby ensuring reliable movement between the unlocking position and the holding position.

[0026] An expedient development of the present invention can consist in that a spring element on the slide is assigned to each receiving cam. Each spring element, in turn, can be assigned a locking element, wherein the slide can be held in the unlocked position by their locking connection. By providing a plurality of spring elements, preferably at opposite ends of the slide, in particular transversely to a direction of travel, a particularly reliable fastening and release of the slide from the locking in the unlocked position can be ensured. This can in particular prevent one-sided loading or jamming of the slide in the guide groove(s). This can preferably be achieved by ensuring that the force distribution of the spring-loaded slide in the unlocked position is provided evenly across the width of the slide.Particularly preferably, each receiving element on the slide is assigned a spring element with an associated locking element.

[0027] According to a preferred development of the present invention, the slider comprises receiving elements which are positioned toward the openings and / or the receiving cams in the holding position of the slider. The receiving elements can be designed to retain the receiving cams which protrude through the openings into the interior of the housing. The receiving elements can be at least partially removed from the opening when the slider is in the unlocked position. The opening can be exposed by the receiving element at least to such an extent that unhindered insertion of the receiving cams through the openings / into the opening in / into the housing is possible.

[0028] According to a particularly preferred development of the present invention, it is provided that the receiving element has at least one wing which engages behind the receiving cams when the slider is in the holding position.

[0029] The receiving elements can be designed to hold the receiving lugs inserted into the opening of the housing inside the housing. For this purpose, the receiving elements can, for example, be sleeve-shaped and / or laterally fit over the receiving lugs located in the housing and / or engage around / behind them and / or be positioned in a closed position.

[0030] According to the present invention, the receiving element can have at least one wing configured to engage behind the receiving cam when the latter projects through the openings in the housing. The preferred sleeve shape of the receiving elements can therefore be limited to the wings or at least include them and / or only partially enclose the receiving cams.

[0031] It is expediently provided that the receiving cams, preferably on a side facing away from the opening in the operational connection state of the tank ring adapter and the locking device, i.e. on a side facing the tank ring adapter, have at least one projection which is engaged behind by the receiving elements.

[0032] A particularly reliable fixing of the receiving cams in the interior of the housing of the locking device can be provided in that the receiving cams have a projection or an undercut which can be brought into engagement with the receiving elements.

[0033] Particularly preferably, the wings of the receiving elements can laterally enclose / engage behind / engage the receiving cams. The receiving cams can preferably be elongated or rod-shaped. The receiving cams can be inserted into the openings in the housing of the locking device parallel to their longitudinal axis. The projection or undercut can extend parallel to the longitudinal axis of the receiving cams.

[0034] In principle, the receiving cams can have any geometry and can also be arranged in an alignment other than parallel to one another. However, for the leverage forces occurring on the tank ring adapter between the luggage and the motorcycle tank, it can be advantageous to provide elongated receiving cams which extend parallel to the tank ring adapter and / or the housing of the locking device and / or to the motorcycle tank and / or to the luggage or motorcycle accessory and / or to the direction of displacement of the slider between the unlocking position and the holding position and / or to the receiving element or its housing. Particularly preferably, the wings of the receiving elements extend parallel to the longitudinal direction of the receiving cams or their undercuts / protrusions.

[0035] Particularly preferably, the slider is mounted on the housing so that it can move along guide grooves. This ensures reliable displacement of the slider between the unlocking position and the holding position.

[0036] A particularly advantageous development of the present invention is that the spring element is mounted on the slide above the housing opening. The spring element can be arranged opposite the opening in the housing in such a way that, upon insertion of the receiving cams, they directly or indirectly contact the spring element, thereby releasing a locking connection that holds the slide in the unlocked position.

[0037] The receiving cam can have a stop which can be contacted with the spring element or a locking stop arranged on the spring element when the receiving cam is inserted through the opening in the housing into the interior of the housing.

[0038] Inserting the receiving cam(s) through the opening(s) of the housing into its interior can thus release the slide from its unlocked position and trigger a displacement of the slide into its holding position while releasing a spring force. In the holding position, the receiving element(s) of the slide can be positioned toward the area inside the housing in which the receiving cams are located, thereby retaining them, preferably enclosing them, within the housing.

[0039] According to an expedient development of the present invention, it is provided that the slider has a connecting means for an extension, in particular a loop, via which the slider can be displaced into the unlocking position by pulling.

[0040] The connecting means can be located in the extension of the grooves of the housing, along which the slider can be moved between the unlocking position and the holding position.

[0041] Preferably, the connecting means is arranged at the end of the slider facing the unlocking position. If the slider is in the holding position, the slider can be moved into the unlocking position by applying a corresponding pulling force to the connecting means, in which the slider engages.

[0042] By inserting the receiving cams into the openings of the housing and moving the receiving cams towards the spring elements / the locking stop on the slide, the slide can be released from its locked unlocking position and moved to the holding position for connecting the tank ring adapter and locking device.

[0043] The invention is explained in more detail below with reference to the accompanying drawings. Figure 1a-cperspective view of the tank ring adapter and the locking device, Figure 2a-efrontal and perspective views of the slide of the locking device, Figure 3a-cfrontal and perspective views of the housing of the locking device, Figure 4a-bperspective views of the locking device in the unlocking position of the slide, Figure 5a-dfrontal and perspective views of the locking device with slide in the holding position and Figure 6a-ctank ring closure with tank ring adapter and locking device in the normal operating connection state and slide in the holding position.

[0044] The Figure 1a shows a perspective view of the multi-part tank ring closure, comprising the tank ring adapter 10 and the locking device 20.

[0045] The tank ring adapter 10 is designed to be fixedly secured to the tank cap area of ​​a motorcycle tank. It has at least one receiving lug 11, which serves as a connecting link to the locking device 20.

[0046] For the sake of simplicity, the invention is described below for two receiving lugs. However, all statements also apply to one or more receiving lugs and the corresponding devices of the tank ring closure.

[0047] The receiving cams 11 can be inserted into the openings 31 of the locking device 20 and can be held in place by the locking device.

[0048] The connection of tank ring adapter 10 and locking device 20 can be achieved by fixing the receiving cams 11 in receiving housings 54 of receiving elements 50, as described in more detail in Figure 2 are shown.

[0049] The receiving housing 54 does not necessarily have to have a design that encloses the receiving cams. The only essential feature of the receiving housing is that it is designed to hold the receiving cams in the opening 31 of the locking device 20 when the slider 40 is in the holding position ( Fig. 5 ) is located.

[0050] The locking device 20 can have a housing 30 and a slide 40, which can be mounted in a movable manner in the guide grooves 32, in particular via guide elements 43.

[0051] Figure 1b shows the object according to Figure 1a , but in a view rotated by approximately 180°, in which the receiving cams 11 and the mechanism of the locking device 20 are visible. The slider 40 can be displaceably mounted in the housing 30 along the grooves 32. Figure 1b The slider is shown in its unlocked position relative to the housing.

[0052] The receiving elements 50 on the slide 40 are thus at least partially retracted from the openings 31 into which the receiving cams 11 of the tank ring adapter 10 can be inserted. This ensures unhindered insertion of the receiving cams 11 into the openings 31. Preferably, the receiving elements 50 are slidably mounted within the housing 30.

[0053] At least one locking element 33 can be provided on the housing 30, which can retain the slide 40 in the unlocked position against the spring force of the spring 41. As long as the slide 40 is held in the unlocked position, the opening 31 for the receiving cams 11 can be accessible.

[0054] The tank ring closure can basically be constructed in such a way that the slide 40 can be released from its locked unlocking position by inserting the receiving cams 11 into the openings 31 and the slide can be moved towards the holding position, whereby the spring 41 can relax.

[0055] The spring 41 can be arranged connectingly between the housing and the slider along the direction of travel of the slider 40 in the housing 30.

[0056] The slider 40, in particular its receiving element 50, can have a locking stop 53, which interacts with the locking element 33 in the unlocked position of the slider 40 and retains the slider in the unlocked position. The locking stop 53 can be mounted so as to be movable / displaceable relative to the locking element 33. In particular, by displacing the locking stop 53, the locking connection between the locking stop 53 and the locking element 33 can be released. Preferably, a spring body 42 is provided on the slider 40, in particular on the receiving element 50, on which the locking stop 53 is preferably arranged at the end.

[0057] With the opposite end, the spring body 42 can be fixed to the slider 40, in particular to the receiving element 50.

[0058] The receiving cam 11 can have a stop 13 which, in the normal operating state of the tank ring adapter and locking device, points in the direction of the housing 30 or spring body 42, in particular in the direction of the locking stop 53.

[0059] By inserting the receiving cam 11, the stop 13 can be positioned toward the spring body 42 and / or the locking stop 53. By inserting the receiving cam 11 into the opening 31, the stop 13 can release the locking stop 53 / the spring body 42 from its connection with the locking element 33.

[0060] By inserting the receiving cams 11 into the openings 31, the engagement of the locking element 33 and the locking stop 53 / spring body 42 can be released and the slide 40 can be displaced towards the holding position, in particular by releasing the spring 41.

[0061] The Figure 1c shows the object according to the Figures 1a-bin a further perspective view, from which the receiving areas 52 / receiving elements 50 on the slider 40 are particularly clearly visible. The receiving areas 50 are at least partially provided inside the receiving housing 54.

[0062] For a particularly reliable mounting of the receiving cams 11 on the locking device 20, these can have wings 12 which can extend parallel to a longitudinal direction of the receiving cams 11.

[0063] The slider 40 or the receiving housing 54 can have wings 51 in the connection area / contact area with the receiving cams 11, which can engage behind the projections 12 of the receiving cams 11 and can thus provide a particularly reliable holding of the tank ring adapter in the locking device 20.

[0064] The Figures 2a-e show the slider 40 in several perspective and frontal views.

[0065] The arrangement of the receiving elements 50 on the slide 40 with the fixation of the spring body 42 at one end of the receiving element 50 and / or the arrangement of the locking stop 53 at the opposite end is clearly visible. The spring body has a spring effect with a restoring force, which reliably engages the connection between the locking element 33 and the locking stop 53 / spring body 42 and, on the other hand, reliably releases the locking connection when the spring body 42 or the locking stop 53 is lifted, for example, by inserting the receiving cams 11 into the opening 31 and the associated advancing of the stop 30 toward the spring element or locking stop 53.

[0066] Preferably, the receiving elements are formed with a receiving housing 54, which is preferably open at least on the side facing the holding position of the slide 40 in the unlocked position of the slide 40. Furthermore, the housing can preferably be opened downwards—that is, in the direction of the tank ring adapter—with wings 51 preferably at least partially lining the opening in the longitudinal direction parallel to the displacement direction of the slide in the housing.

[0067] Thus, the receiving cam, which is inserted into the opening 31 of the housing 30, can be inserted into the receiving element through the first described lateral opening in the receiving element 50 and, in the operationally connected state of the tank ring adapter 10 and the locking device 20, when the slider is arranged in the holding position, can protrude downward through the second described opening. The wings 51 can engage behind the receiving cam 11 in the holding position, thereby providing a particularly reliable mounting of the receiving cam 11 in the locking device 20 or in the receiving element 50.

[0068] The receiving element 50 or the wings 51 can have a chamfered guide area 55, by means of which the joining of the respective receiving element 50 with the respective associated receiving cam 11 can be made particularly uniform.

[0069] The chamfered guide area 55 can be located on the wings 51 in the area of ​​the front opening which the receiving element 50 can have in the direction of the holding position of the slide 40.

[0070] Even if the receiving cam 11 has a suboptimal fit in the opening 31 / in the housing 30, it is aligned by the chamfered guide area 55 into the correct position in the opening 31 and in the receiving housing 54 of the receiving element 50, in particular when the slider is moved from the unlocking position to the holding position.

[0071] In the holding position, the receiving housing 54 of the receiving element 50 is arranged in / on / near / behind the opening 31 together with the receiving cam 11 and holds it in the locking device.

[0072] The Figures 3a-c show the housing of the locking device without the slides 40 movably mounted therein.

[0073] The receiving cam 11 can be inserted into the interior of the housing 30 via the openings 31 and can be fed into the receiving housing 54 by the slide 40 or its receiving elements 50.

[0074] In the normal operating state of the tank ring adapter 10 and the locking device 20, the receiving cams 11 of the opening 31, as shown in the Figures 6a-b presented, facing each other and introduced into them.

[0075] The Figures 4a-b show the locking device according to the invention in the unlocking position of the slider 40, in which the slider 40 or the receiving element 50 are retracted from the area of ​​the opening 31 to such an extent that engagement of the receiving cam 11 in the opening 31 is possible and the receiving cam 11 can be engaged behind by the receiving element 50.

[0076] For this purpose, it may be advantageous for the receiving element 50 to have a recess in the region of the wings 51, i.e. in the part of the receiving element 50 facing the receiving cam 11, i.e. the wings 51 can basically be shorter than the receiving element 50 or the receiving housing 54 as a whole.

[0077] This makes it possible for the receiving element 50 to partially protrude into the opening 31 in the unlocking position, but the accessibility of the opening 31 for the receiving cam 11 is fully ensured.

[0078] Consequently, the release of the opening 31 or the receiving cam 11 in the opening can be achieved by a relatively small displacement of the slide, which can be beneficial to an overall reduced size of the housing 30.

[0079] Accordingly, in the unlocking position of the slide 40, the opening can be released by the lower region of the receiving housing 54, in particular by the wings 51, at least to the extent that the receiving cams 11 can be inserted completely into the opening 31 along their length.

[0080] By inserting the receiving cams 11 into the opening 31, the stop 13 can release the connection between the locking stop 53 / spring body 42 and the locking element 33, for example, by lifting the locking stop 53 / spring body 42 upwards out of its connection with the locking element 33. This allows the released slide 40 to be automatically moved from its unlocked position to the holding position.

[0081] The insertion of the receiving cams 11 into the openings 31 can thus contribute to an automatic locking and connection of the tank ring adapter and the locking device.

[0082] If the slider is in the holding position without the receiving cam being connected to the locking device 11, the locking device 20 or the openings in the housing are preferably blocked for receiving the receiving cams 11. Preferably, only when the slider is at least partially displaced toward the unlocking device is the locking device 20 / the openings 31 released for receiving the receiving cams 11.

[0083] The Figures 5a-d show the locking device according to the invention with the slider 40 in its holding position, in which the spring 41 is relaxed (more relaxed) than in the unlocking position, and the receiving element 50 or the receiving housing 54 is positioned toward the opening 31 of the housing 30. As a result, the opening 31 and the receiving area 52 of the receiving element 50 for the receiving cam 11 lie one above the other / inside the other.

[0084] According to the present invention, the opening 31 can be understood not only as a mere recess in the housing 30, but can also be receiving areas inside the housing, which is closed off to the outside by an opening in the housing. Accordingly, in the holding position of the slide, the opening 31 and the receiving area for receiving cams 52 / the receiving housing 54 can describe the same area of ​​the locking device, as shown in Figure 5b indicated by the reference numerals 31 / 52.

[0085] The arrows in Figure 5a indicate the displacement of the slider 40 along the guide grooves 32 from the unlocking position towards the holding position shown.

[0086] As from Figure 5bAs can be seen, the receiving housing 54 and in particular the wings 51 are positioned in the area above the opening or the opening, whereby they engage behind the receiving cams 11, preferably holding their projection 12.

[0087] The Figures 5c-d show the locking stop 53 / spring element 42 released from the locking element 33 as well as the slide 40 in the holding position, wherein the wings 51 can be positioned parallel to the opening 31 in the housing 30 of the opening 31, i.e. are located within the opening or above the opening 31.

[0088] Accordingly, the receiving element 50 or the wings 51 can prevent the receiving cams 11 from falling out of the opening 31.

[0089] The Figures 6a and 6bshow the tank ring closure with the tank ring adapter 10 and the locking device 20 in the operational connection state both in a view from above and from below, in which the receiving cams 11 are inserted into the openings 31 and are held by the receiving element 50 or its wings 51 in the relative position of 10 and 20.

[0090] Fig. 6c shows the tank ring closure with the tank ring adapter 10 and the locking device 20 in the normal operating state in a plan view and shows the receiving housing 54 in a state in which it is positioned towards the receiving cam. List of reference symbols

[0091] 10 Tank ring adapter / motorcycle-side adapter 11 Receptacle cam 12 Projection 13 Stop 20 Locking device / locking element 30 Housing 31 Opening 32 Guide groove 33 Latching element 40 Slider 41 Return spring 42 Spring body 43 Guide element 50 Receptacle element 51 Wing 52 Receptacle area for receptacle cam 53 Latching stop 54 Receptacle housing 55 Chamfered guide area 60 Connecting element

Claims

1. Locking element, particularly tank ring lock, for attaching luggage or motorcycle accessories to a motorcycle, particularly to its tank or rear, comprising a motorcycle-side adapter (10), particularly a tank ring adapter, which can be firmly connected to the motorcycle, particularly its tank, and carries two receiving cams (11) arranged at a distance from each other, preferably parallel, and a locking element (20), which can be firmly connected to the back of the luggage or the motorcycle accessory, wherein the locking element (20) comprises a housing (30) that can be statically fixed to the luggage or motorcycle accessory and a slider (40) movably mounted on the housing (30), wherein the housing includes openings (31) into which the receiving cams (11) can be inserted and the slider (40) can be moved on the housing (30) from a holding position to an unlocking position against a restoring spring force, wherein the locking element is designed to hold the receiving cams in the openings when the slider is in the holding position wherein at least one locking element (33) is arranged on the housing (40), which interacts with a spring body (42) of the slider (40) and is designed to hold the slider (40) in the unlocking position and wherein the receiving cams (11) have a stop (13) which is arranged to interact with the spring body (42) when inserting the receiving cams (11) into the openings (31) and to release it from the locking element (33), characterized in that the slider (40) has receiving elements (50) which can be retracted for unhindered insertion into the openings (31).

2. Locking element according to claim 1, characterized in that the spring mounting (41) of the slider (40) is designed to move the slider (40) from the unlocking position to the holding position.

3. Locking element according to one of claims 1 or 2, characterized in that a spring element (42) on the slider (40) is assigned to each receiving cam (11).

4. Locking element according to one of claims 1 to 3, characterized in that the slider (40) has receiving elements (50) which are positioned in front of the openings (31) in the holding position of the slider (40).

5. Locking element according to claim 4, characterized in that the receiving elements (50) have at least one wing (51) which grips behind the receiving cams (11) in a holding manner when the slider (40) is in the holding position.

6. Locking element according to claim 4 or 5, characterized in that the receiving cams (11) have at least one protrusion (12) on a side facing away from the opening (31) in the operational connection state of the motorcycle-side adapter and locking element, which is gripped behind by the receiving elements (50).

7. Locking element according to one of claims 1 to 6, characterized in that the slider (40) is movably mounted on the housing (30) along guide grooves (32).

8. Locking element according to one of claims 3 to 7, characterized in that the spring element (42) is mounted on the slider (40) above the housing opening (31).

9. Locking element according to one of claims 1 to 7, characterized in that the slider (40) has a connecting means (60) for an extension, particularly a loop, by which the slider (40) can be moved into the unlocking position by pulling.