EP0824327A1

EP0824327A1 - Snap fastener closure

Info

Publication number: EP0824327A1
Application number: EP96914981A
Authority: EP
Inventors: Winfried Hurtz; Michael Schwarz
Original assignee: William Prym GmbH and Co KG
Current assignee: William Prym GmbH and Co KG
Priority date: 1995-05-10
Filing date: 1996-04-24
Publication date: 1998-02-25
Anticipated expiration: 2016-04-24
Also published as: EP0824327B1; JPH11509109A; ATE208150T1; WO1996035344A1; AU5692196A; DE19517010C2; DE19517010A1; US5894641A

Abstract

In snap fastener closures, the convex part should be as easy as possible to couple to a socket part (20) but they should be difficult to uncouple. The socket part (20) consists of a slide (30) movable in the longitudinal direction in a housing (23) and forked inside the housing into two branches. Both branches consist of sections (31, 32) with different profiles in relation to the closure head (12) of the convex part. One section (31) locks and the other section (32) releases the closure head (12). In order to easily couple both parts, the locking section (31) is arranged at the free ends of both slide branches, so that they are elastically spread apart. When the closure head (12) of the convex part is inserted between both slide branches, it is elastically and automatically coupled therebetween. Said section (31) acts then as a coupling section. One slide branch has a bent extension (36) that acts as a spring on the slide (30) and keeps its coupling section (31) aligned with a hole through which the closure head (12) is inserted into the housing (23).

Description

Snap closure

The invention is directed to a snap fastener of the type specified in the preamble of claim 1. The peculiarity of this snap fastener is that the die part is formed in two parts, consisting of a housing and a sliding plate which is displaceable therein and which is forked and between their two legs have a small clear width, which determines a locking section. If the locking section is in alignment with an insertion hole of the housing, the coupling surfaces of the male part previously introduced into the housing can be locked because the plate legs grip a locking neck of the male part which is behind an undercut locking head. There is then a locking position of the sliding plate, which is determined by a fuse between the plate and the housing.

However, in addition to its locking section, the sliding plate also has a release section where the two plate legs are at a distance from one another which exceeds the closing head of the male part and which determines a wide release opening. With this release section, the slide plate is in alignment with the insertion hole of the Housing, then the male-shaped coupling surfaces can be freely inserted or removed from the male part in the housing. There is then a release position of the sliding plate.

In the known snap fastener of this type (DE-PS 21 0. 150), each of the two plate legs is guided in its own housing channel, which excludes elastic expansion of the plate legs. As a result, a snap-in coupling of the male part is not possible in the locking position of the sliding plate. In order to be able to insert the male part, the sliding plate must first be manually moved into its release position so that its release section is aligned with the insertion hole in the housing. Then the male dome surfaces can be inserted into the housing, but their insertion position in the female part between the male and female dome surfaces is not yet secured. There is no snap engagement between the two dome surfaces. In order to lock the engagement of the male part in the female part, the sliding plate must be inserted into the housing until the locking head of the male part inserted is engaged by its locking section. A laborious, targeted control movement of the sliding plate is thus required to lock the male part in the female part.

In this known snap fastener, the locking section is arranged in the middle plate area between the forked plate end piece which has a handle on the one hand and the wide release opening between the closing leg ends on the other hand. To secure the locking position, the free leg ends have hooks that point away from each other and engage behind outer wall areas of the two subchannels when the sliding plate is fully inserted. In order to transfer the sliding plate from its locking position into the release position, a complicated two-stage operation is necessary. In the first actuation stage, the two plate legs must first be pressed together manually so that the end hooks seated on them release the outer wall of the two subchannels. Only when this unlocking has been carried out can the sliding plate be pulled out manually in the second actuation stage in order to release the end opening between the two plate legs to the insertion hole of the housing.

With a snap fastener of a different type (DE-PS 328 038), a snap coupling of the male part in the female part is possible, but an at least three-part female part is required for this. In addition to the housing, the matrix part initially comprises separate spring clips which determine the matrix-shaped coupling surfaces and with which the matrix-shaped coupling surfaces of the coupling part can be freely coupled and uncoupled. A separate perforated plate with longitudinal slots is used for locking, which are penetrated by rivets anchored in the housing and thus limit their displacement path. The perforated plate has a keyhole-like opening, the extended part of which allows the male and female coupling surfaces to be freely inserted and removed to the spring clips. In order to secure the engaged position of the male part in the female part, the perforated plate has to be manually pushed in laboriously until the narrowed area of its keyhole travels behind the thickened closing head of the male part. This closure is costly to produce because of the numerous components and its operation for locking the snap-fastener parts which are snapped together is cumbersome.

In a further snap fastener (DE-PS 296 556) it is finally known to use a displaceable locking spring for locking the male part inserted into the female part. The locking spring is made of a meandering wire that protrudes from the housing of the die part with a loop serving as a handle. For locking purposes, the locking spring has a rigid bracket section, which is always held in the locking position with an insertion hole in the die housing by a curved wire end which is supported on the inner surface of the housing. The rigid bracket section excludes a simple snap coupling of the male part. In order to be able to insert the male-shaped coupling surfaces, the locking spring must first be pushed in with difficulty until the rigid bow portion of the wire is removed from the insertion hole of the female housing. Elastic, resilient dome-shaped dome surfaces are missing, which would allow a convenient and quick coupling of the male part in the female part. The invention has for its object to develop an inexpensive snap fastener of the type mentioned in the preamble of claim 1 with egg nem consisting of only two members die part that can be quickly coupled to the associated male part, its coupling engagement though by a sliding plate is reliably locked, but a targeted unlocking can be carried out conveniently. This is achieved according to the invention by the measures specified in the characterizing part of claim 1, which have the following special significance.

A difference compared to the prior art is first of all that in the sliding plate of the closure according to the invention, the locking and release sections produced by the plate legs have interchanged their position with the generic state of the art; the locking section is located at the ends of the legs. Another difference is that the one plate leg is elongated and generates a spring which, together with end stops between the plate and the housing, automatically determines a defined starting position of the sliding plate in the die housing. In this starting position, the locking section between the two plate legs is aligned with the housing insertion hole, which is why the locking position of the sliding plate is normally present in the housing. Because this locking section is produced by leg ends of the sliding plate which are elastically expandable with respect to one another, this region of the slide fulfills the function of die-shaped coupling surfaces in the die part. Although the locking position of the sliding plate is present, the male part with its male-shaped coupling surfaces can be coupled without prior actuation of the slide. The locking section is at the same time an elastic coupling section for the male part in the invention. When the thickened closing head passes from the male part, the two plate legs spread apart and snap back automatically behind the closing head, where they engage behind the closing neck of the male part.

Decoupling in opposite directions is, however, not readily possible because the closing head is sharply undercut towards its closing neck. For decoupling, the sliding plate only needs so far against the spring force of its extended leg acting in the ejection direction to be pressed into the housing until the wide release opening between the two plate legs is aligned with the housing insertion hole. The matrix-shaped coupling surfaces from the locking section are now removed, which is why the male part can be easily pulled out of the female part. Further actuation of the slide plate is no longer necessary because, under the action of its resilient elongated leg and end stops, the slide plate is automatically returned to its starting position, where the locking section is in alignment with the housing insertion hole. This starting position is achieved simply by releasing the sliding plate. The female part is ready to be coupled to the male part again in the usual push button-like manner. The structure and handling of the snap fastener according to the invention are consequently very simple. The die part consists of only two components, namely the housing and the sliding plate.

The measures of claim 6 are of considerable advantage. There is an indirect actuation of the sliding plate via the rotary handle. The rotating handle mounted on the housing only needs one turning operation to adjust the sliding plate, which the hand can grip at any point. If the rotary handle is designed like a "rotary knob", it can be gripped by three fingers of the human hand and easily turned. A longitudinal movement of the sliding plate in the interior of the housing is generated from the rotation of the rotary handle on the outside of the housing by means of the interacting inner and outer profiles. In this way, favorable force ratios can be exploited, which allow the sliding plate to be operated surprisingly smoothly. Particularly if the rotary handle is designed as a round button, the die part is pleasing, symmetrical. In any case, there is no disturbing radial projection on the sliding plate, on which objects could get caught.

Further measures and advantages of the invention result from the subclaims, the following description and the drawings. The invention is shown in an exemplary embodiment in the drawings. Show it: La shows a longitudinal section through the housing of the die part according to the invention,

1b shows the top view of the housing shown in FIG.

1c shows a cross section through the housing from FIG. 1b along the branched cutting line Ic-Ic there,

2a and 2b show the side view and the top view of a further component to be introduced in the housing of FIG. 1a, namely a slide

3a and 3b, analogous to FIGS. 1a and 1b, a longitudinal section or a plan view of a counter-holder assigned to the housing of the die part,

4 in a longitudinal section corresponding to FIGS. 1 a and 3 a, the mutual fastening of these two components to a carrier, after the slide shown in FIG. 2 a has previously been mounted in the housing of FIG. 1 a,

5 shows the side view of a complementary male part belonging to the female part of FIG. 4,

6a and 6b horizontal sections through the die part along the section line VI-VI of Fig. 4, but with the male part of Fig. 5 inserted into the housing of the die part, which was also recorded, in Fig. 6a in a coupling position in 6b in a release position, which allows the male part to be uncoupled,

Fig. 7a, schematically and in large enlargement a horizontal section through an alternative design of the die part, where, in analogy to Fig. 6a, the coupling position of the sliding plate is shown, and Fig. 7b the same horizontal section as Fig. 7a, but in analogy to Fig. 6b, where the slide plate is in its release position, which allows the male part to be uncoupled.

4 and 5, the snap fastener according to the invention consists of a female part 20, which is fastened to a first carrier 50, and a male part 10, which is seated on a second carrier 40. The two push button parts 10, 20 serve to either hold the two supports 40, 50 together or to detach them from one another. For this purpose, the two push-button parts 10, 20 have mutually complementary male or female coupling surfaces 11, 21.

The coupling surfaces 11 of the male part 10 are, as shown in FIG. 5, divided into a closing head 12 and a closing neck 13 which is offset in cross-section. The coupling surfaces 11 are seated via a shaft 15 in the present case on an end flange 16, which is used to fasten the male part 10 to its carrier 40. In the exemplary embodiment shown, the attachment takes place via a welded connection 17 on the underside of the flange to the top side 41 of the carrier 40. Of course, any other fastening measures can also be used for attaching the male part 10 to the carrier 40, e.g. B. rivets, which are set from the underside 42 of the carrier 40 and z. B. attack on flange 16. It is also possible to use notch nails which are located in the interior of the male part, e.g. B. in the region of an axial bore provided in the shaft 15 are anchored.

As can be seen from the individual part drawings in FIGS. 1 a to 2 b, the die part 20 consists of two components 23, 30, namely a housing 23 on the one hand and a slide 30 which is longitudinally movable therein. The housing 23 could indeed be composed of two housing halves which can be assembled together, but it is more advantageous, as the exemplary embodiment in FIGS. 1 a and 1 b shows, to form the housing 23 in one piece. The housing 23 is fastened to the face side 51 of the carrier, for which an additional component, namely the counter-holder 43 shown in FIGS. 3a and 3b, is used, which is designed in the manner of a nut. It is understood that for attachment any other known fastening method of the die part 20 on the carrier 50 could be used.

The housing 23 initially has an insertion hole 24 in the form of an axial bore, into which the male-shaped coupling surfaces 11 from the male part 10 are inserted for coupling in the sense of the insertion arrow 18 shown in FIG. This insertion hole 24 passes through a channel 25 embedded in the housing interior, which is used to guide the slide 30. The guide channel 25 opens out with a slot 26 on a side surface 27 of the housing which defines the circumference of the housing. After assembly, the slider 30 protrudes from this slot, as can be seen in FIG. 4, with an end piece 37, on which a widened handle 38 is located. The two components 23, 30 are assembled in the following manner.

As shown in FIGS. 2a, 2b, the slide 30 is plate-shaped, but a projection 39 and, for better grip, the handle 38 also rises out of the plate plane on one side. This projection 39 is a backdrop on an inner surface of the guide channel 25

29 assigned, which, after assembly of the sliding plate 30, serves to guide it. The assembly is done simply by the sliding plate

30 with its plate section, which is to be described in more detail and lies in front of the end piece 37, is inserted through the lateral slot 26 in the sense of the mounting arrow 19 which can be seen in FIG. 2a. Because in the present case the sliding plate 30 consists of a form-elastic material, such as plastic, the projection 39 and the link 29 act together as a snap connection. The projection 39 namely has a run-up slope 49, which can be seen in FIG. 2a, which snaps through the slot 26 through elastic deformation of the projection 39 itself and / or the housing wall and engages in the link 29. For an occasional desired disassembly of the sliding plate 30 from the housing 23, its projection 39 can have an inclined surface opposite the run-up slope 49, shown in FIG. 2a, which allows the sliding plate 30 to be pulled out of the channel 25 in the opposite direction to the assembly movement 19.

As can be seen from Fig. 2b, the sliding plate 30 is theirs End forked into two plate legs 34, 35. These plate legs 34, 35 are provided on their mutually facing edges with a certain profile, which divides them into two sections 31, 32. After its assembly, which can best be seen from FIG. 6a, the slide plate 30 is under the action of a spring 36, which strives to keep it in the starting position shown there, which will be briefly described below for reasons to be explained in more detail below "Coupling position" should be referred to. The spring 36 namely causes a spring force shown by the force arrow 46 of FIGS. 4 and 6a. The projection 39 abuts the sliding plate 30 on the outer end of its link guide 29, which acts as an end stop.

The matrix-shaped coupling surfaces 21 of the matrix part 20, which are assigned to the male part 10, are arranged in the section 31 of the sliding plate 30, which is therefore to be referred to below for short as the “coupling section”. This coupling section 31 has the actual matrix-shaped closing opening 22, which is produced by the profiled inner edges 21 of the two plate legs 34, 35. Between the two leg edges 21 there is a small clear width 65 according to FIG. 2b. The one plate leg 35 is extended and this extension also forms the spring 36 described above. The spring 36 is thus formed in one piece with the slide 30 and uses the elastic properties of the material used for its production, such as a plastic. The spring 36 consists of a V-shaped offset lying in the plane of the plate. In the case of installation, as shown in FIG. 6a, the free end of this V-spring 36 is supported on the inner surface 28 which is most easily formed by the channel floor itself.

In the coupling position of the slide 30, according to FIGS. 4 and 6a, the matrix-shaped coupling surfaces 21 produced by the slide 30, which close the aforementioned small clear width 65 between them, are in axial alignment with the insertion hole 24 of the housing 23 of the male part 10 in the sense of the already mentioned insertion arrow 18 shown in FIG. 4, the inclined surfaces 53 provided at the free end abut the closing head 12 shown in FIG. 5 against the female dome surfaces 21 and spread the two plate legs 34, 35 forming them apart resiliently. This can the entire closing head 12, which is widened in relation to the clear width of the closing opening 22, can pass through. The transition point between the closing head 12 and the adjacent closing neck 13 in the male part 10 is, as is apparent from FIG. 5, provided with a sharp undercut 14. When the coupling position of the male part 10 shown in FIG. 4 is reached, the closing opening 22 shown in FIG. 2b snaps around the closing neck 13 of the male part 10 shown in dash-dot line in FIG 30 overlaps. The two plate legs 34, 35 grip like pliers around the closing neck 13. The closing head 12 has an outer diameter 54 which can be seen in FIG. 5 and which is larger than the inside width of the closing opening 22 when the plate legs 34, 35 are not spread in the slide 30. When the sliding plate 30 is in the coupling position, the male part 10 cannot consequently be uncoupled in the opposite direction to the insertion arrow 18 mentioned in the sense of the arrow 48 also indicated in FIG. 4. For this purpose, the sliding plate 30 must first be moved into its position shown in FIG. 6b, which for the following reasons is to be referred to for short as the "uncoupling position".

6b, the sliding plate 30 is pressed into the housing 23 by means of a handle 38 in the direction of the movement arrow 56, specifically against the action of the spring force 46 already mentioned. As a result, the spring 36 is deformed accordingly. The abovementioned projection 39 seated on the sliding plate 30 comes to rest on the inner end of its link 29 on the housing side. In this decoupling position, the slide 30 with the adjacent section 32, which can be seen in FIG. 2b, is in axial alignment with the insertion hole 24 on the housing side. In this section 32 there is a release opening 33, the clear opening width 55 of which is larger, but at least equal to the aforementioned 5, which can be seen in FIG. 5, is formed from the closing head 12 of the male part 10. This section 32 is therefore to be referred to as the "release section". This expanded release opening 33 is formed by a correspondingly expanded profiling of the two plate legs 34, 35 described above. Between the closing opening 22 there and the release opening 33 on this side, there is a passage 62 through which the pushing-in plate 30 during the pushing-in movement 56 the closing neck 13 moves from the male part 10 to the position shown in FIG. 6b. In this position, as indicated by a dash-dot line in FIG. 6b, the male part 10 inserted according to FIG. 4 can be freely pulled out of the female part 20 in the direction of arrow 48 without any particular effort. Therefore, the position of FIG. 6b can be referred to as the "uncoupling position" of the sliding plate 30.

To secure the coupling position of the slide 30 shown in FIG. 6a, there could be an elastic constriction in the area of the passage 62 shown in FIG. 2b compared to the diameter of the closing neck 13, which during the pushing-in movement 56 of the slide 30 into the uncoupling position shown in FIG. 6b is overcome. Such an elastic deformation can be caused by such a narrowing of the passage 62 by an elastic spreading of the two plate legs 34, 35.

As already mentioned at the beginning, the die part 20 is fastened to the carrier 50 by a counter-holder 43 shown in FIGS. 3a and 3b. The counter-holder 43 is an annular body which in the axial direction is in a plate 44 with numerous pointed, axial projections 58 and a non-circular section to be actuated by a tool in the form of an external hexagon 45. The counter-holder 43 is axially penetrated in the manner of a nut by an internal thread 47.

The housing 23 of the die part 20 has an axial projection 59 which is provided with an external thread 57 and which, in the case of fastening, can be screwed to the nut thread 47 of the counter-holder 43. For this purpose, as can be seen in FIG. 4, a hole 60 is punched at the location of the carrier 50 to be provided with the die part 20, through which the threaded attachment 59 is inserted through the die part 20. In this case, the housing 23 comes to rest with its lower surface on the viewing side 51 of the carrier 50. The counter-holder 43 is screwed on from the back of the carrier 52, its tapered projections 58 penetrating into the material of the carrier 50. The lower surface of the housing 23, as shown in FIG. 1c, can also be provided with corresponding pointed teeth 61, which are analogous in the case of fastening Penetrate from the carrier face 51 into the carrier material. The pointed projections 58 and / or teeth 61 are intended to secure the counter-holder 43 in its screw-on position on the threaded shoulder 59 of the die housing 23.

An alternative embodiment 20 'of the die part is shown in FIGS. 7a and 7b. The associated male part is designed analogously to FIG. 5 and has a closing head 12, the outline of which is indicated by dash-dotted lines in FIGS. 7a and 7b. The die part 20 'has a largely analogous structure to the preceding embodiment 20 of the die part. The die part 20 'comprises a housing 23', which is highlighted by different dot hatching. The regions of the housing 23 'which are highlighted in rough hatching are higher than the narrowly dotted areas.

The housing 23 'has a circular housing circumference 78, which is illustrated by the dashed line in FIG. 1 and on which a rotary handle 66 which is embodied here in an annular manner is rotatably mounted. The housing 23 'has an insertion hole 24' for the male part, which is why it is larger in diameter than the mentioned closing head 12 of the male part. This insertion hole 24 'passes through the guide channel 25' also provided here, which passes through the housing 23 'diametrically and serves to receive a sliding plate 30' which is modified compared to the first exemplary embodiment.

This sliding plate 30 'is forked into two plate legs 34', 35 'following its actuating end 37'. These plate legs 34 ', 35' are profiled in an analogous manner and can be divided into the locking section 31 'and the release section 32'. The one plate leg 35 'is elongated and also forms a spring 36', which is located on an inner surface 70 of the rotary handle 66 at the point where the rotary handle 66 closes the guide channel 25 '. This sliding plate 30 'is also under the action of an extension force 46'. The two plate legs 34 ', 35' enclose between them, in sections 31 ', 32', a large clear width 55 'or a small clear width 65'.

The rotary handle 66 has an inner profile 67 to 69 facing the sliding plate 30 ', which in the present case has an arrowhead shape. det and two edges 67, 68 converging in a tip 69 are determined. This inner profile 67 to 69 thus has a concave shape. This inner profile 67 to 69 is assigned an outer profile 75 to 77 at the actuating end 37 'of the sliding plate 30. In the present case, this consists of a convex shape which is also complementary to the aforementioned concave shape of the turning handle 66, namely also two edges 75, 76 which converge in a common arrow tip 77. The two tips 69, 77 are expediently rounded.

The edges 67, 68 and 75, 76 are straight in the present case, but they could also have a different curvature. The outer profile 75 to 77 of the sliding plate 30 'could be arranged in a different height plane than in FIGS. 7a, 7b, where the rotary handle also has its corresponding inner profile 67 to 69. It is not necessary to design the two profiles 67 to 69 and 75 to 77 with the same shape; there may also be different profiles here. In the present case, the outer profile 75 to 77 is formed by the outer edges, which lie in the plane of the plate and limit the sliding plate 30 'in the direction of extension 46'.

The storage of the rotary handle 66 could take place on separate axial areas of the housing 23 '. The turning handle 66 could consist of a ring segment. In the present case, however, as already mentioned at the beginning, it consists of a complete ring which surrounds the housing 23 'on all sides in a peripheral region 21. In places, however, the rotary handle 66 has ring segments 71, 72, which generate the above-described inner profile 67 to 69 between them. With these ring segments 71, 72, the rotary handle 66 projects at least in regions into the guide channel 25 'of the housing 23'. This also closes the channel opening of the guide channel 25 ′ located there. Due to the pushing-out force 46 ', the sliding plate 30' with its outer profile 75 to 77 is always pressed against the profile areas of the rotary handle 66 located there. As a result, the sliding plate 30 'is in a longitudinal position determined by the rotational position of the rotary handle 66. This can be seen from FIGS. 7a and 7b.

7a shows the starting position of the rotary handle 66, which characterized in that the sliding plate 30 'rests with its outer profile 75 to 77 in a form-fitting manner in surface contact on the inner profile 67 to 69 of the turning handle 66. In cooperation with the spring force 46 ', there is therefore a defined longitudinal position of the sliding plate 30' in the guide channel 25 '; the coupling section 31 'is located in the axial direction with the housing insertion hole 24'.

If the rotary handle 66 is rotated in the direction of arrow 73 in FIG. 7b, the associated inner profile 67 to 69 is of course also rotated with respect to the outer profile 75 to 77 of the sliding plate 30 '. As FIG. 7b shows, the arrow head 77 moves from the slide actuating end 37 'onto the segment edge 67 of the rotary handle 66 and is displaced by the distance section marked 63 in FIG. 7b. The sliding plate 30 'is thus pushed inwards against its spring force 46' and the spring-effective leg extension 36 'is thereby compressed. Analogously to FIG. 6b, the release section 32 'is now aligned with the insertion hole 24' of the housing 23 '. The slide plate 30 'is in the release position.

The rotational position shown in FIG. 7b can be defined by inner end stops. These end stops can consist, for example, of areas of the sliding plate 30 'or can be formed from parts inside the housing 23'.

If the rotational position shown in FIG. 7b is present, where the inner profile edge 67 is still inclined to the direction of action of the extension force 46 ', a force component derived from this extension force 46' is created, which is a component in FIG. 7b by the arrow 74 illustrated restoring torque exerts on the rotary handle 66. If the human hand lets go of the rotary handle 66 in the rotary position of FIG. 7b, the rotary handle 66 automatically turns back 74. The rotary handle 66 is turned back until the initial position shown in FIG. 7a is present. In this starting position, the sliding plate 30 'is in its maximally extended position. There is a full-surface contact between the inner profiles 67 to 69 and outer profiles 75 to 77; the two arrow heads 69, 77 are aligned with one another. The torque acting on the turning handle 66 until then ment 74 has disappeared. There is consequently a secure initial position of the sliding plate 30 '.

It goes without saying that the extension force 46 'acting on the sliding plate 30' could also be generated by a separate spring which, as in the present case, is not formed in one piece with the sliding plate 30 '. The design of the rotary handle 66 could have any shape and z. B. on the view side on the housing 23 'of the matrix part 20'. In this case, a diametrical rib on the rotary handle could be provided for grasping with the human hand.

Claims

P a t e n t a n s r u c h e:

Snap fastener with a male part (10), the male dome surfaces (11) of which have a thickened closing head (12) and a closing neck (13),

and with a die part (20, 20 '), consisting of a one-piece housing (23, 23') having an insertion hole (24, 24 ') for the male-shaped coupling surfaces (11),

and of a sliding plate (30, 30 ') made of elastic material, such as plastic, which is guided transversely to the insertion hole (24, 24') in the housing (23, 23 ') and has an actuating end (37, 37' ) owns

following the actuating end (37, 37 ') the sliding plate (30) bifurcates into two plate legs (34, 34', 35, 35 ') which consist of two differently spaced sections (31, 31' 32, 32 ') exist, namely

on the one hand a locking section, where the plate legs (34, 34 ', 35, 35') close between them a small clear width (65, 65 ') narrowed relative to the closing head (12) and the inserted male part (10) lock,

and on the other hand from a release section (32, 32 '), where between the two plate legs (34, 34', 35, 35 ') there is a large clear width (55, 55') which exceeds the closing head (12) allows the male part (10) to be pulled out axially,

and the slide plate (30) is longitudinally displaceable (56) by means of its actuating end (37, 37 ') between two positions with respect to the housing insertion hole (24, 24'), namely

REPLACEMENT BUTT (RULE 26) a locking position aligned with its locking section and an unlocking position aligned with its release section (32, 32 '),

characterized,

that the two plate legs (33, 34, 33 ', 34') have their release section (32) at the common actuating end (37, 37 ') and the locking section (31) at their inner leg ends,

the leg ends can be elastically spread apart from the locking section and at the same time produce an elastic coupling section (31, 31 ') of the die part (20) for inserting the locking head (12) from the male part (10),

and one of the two leg ends (35, 35 ') is extended beyond the coupling-capable coupling section (31, 31') and forms an elastic spring (36, 36 ') which is supported in the interior of the housing, the spring force of which pushes the sliding plate (30, 30 ') in the push-out direction (46, 46'),

but the extension (46, 46 ') of the sliding plate (30, 30') is limited by end stops which secure the coupling position of the sliding plate (30, 30 ') in the housing (23, 23').

2. Snap fastener according to claim 1, characterized in that the sliding plate (30, 30 ')) with its two plate legs (34, 35; 34', 35 ') in a common channel (25, 25') of the housing (23, 23 ') is guided and the end of its molded spring (36, 36') is supported in the channel interior (28).

3. snap fastener according to claim 1 or 2, characterized gekennzeich¬ net that the spring-forming extension (36, 36 ') of the plate leg (35, 35') consists of a V-shaped offset which in the plane of the sliding plate (30 , 30 ') is arranged.

4. snap fastener according to claim 1, 2 or 3, characterized gekenn¬ characterized in that to secure the lockable coupling position and possibly the unlocked position of the sliding plate (30) between the plate end piece (37) and an inner surface of the housing channel ( 25) on the one hand a projection (39) and on the other hand a link (29) are arranged.

5. Snap fastener according to claim 4, characterized in that the projection (39) and / or the housing (23) have chamfers (49) for the plug-in assembly (19) of the sliding plate (30) in the housing channel (25).

6. snap fastener according to one or more of claims 1 to 5, characterized in that the actuation of the sliding plate te (30, 30 ') takes place indirectly via a rotary handle (66) on the housing (23') from the die part (20 ' ) is mounted and has an inner profile (67, 68, 69) facing the actuating end (37 ') of the sliding plate (30'),

and that at the actuating end (37 ') of the sliding plate (30) there is an outer profile (75, 76, 77) which extends from the spring-effective leg extension (36') against the inner profile (67, 68, 69) of the rotary member handle (66) is pressed,

and that the cooperating inner and outer profiles (67 to 69; 75 to 77) also form the end stops which limit the maximum extension of the sliding plate (30 ').

Snap fastener according to claim 6, characterized in that the cooperating inner and outer profiles (67 to 69; 75 to 77) simultaneously form further end stops which limit the maximum insertion of the sliding plate (30 ').

Snap fastener according to claim 6 or 7, characterized gekennzeich¬ net that the outer profile (75 to 77) of the sliding plate (30 ') delimiting outer edge is formed, which points in the extension direction (46') of the sliding plate (30 ').

9. snap fastener according to claim 6 to 8, characterized gekennzeich¬ net that the inner profile (67 to 69) of the rotary handle (66) is at least partially rectilinear.

10. snap fastener according to one or more of claims 6 to 9, characterized in that the inner profile (67 to 69) of the rotary handle (66) is arrowhead-shaped and be¬ from two in a tip (69) converging edges (67, 68) stands, which produce a concave shape, while the outer profile (75 to 77) on the sliding plate (30 ') has a complementary arrowhead-shaped convex shape.

11. Snap fastener according to one or more of claims 6 to 10, characterized in that the rotary handle (66) with its inner profile (67 to 69) at least partially closes a guide channel (25 ') from the housing (23').

12. Snap fastener according to one or more of claims 6 to 1 1, characterized in that the rotary handle (66) is at least partially ring-shaped, this ring shape encloses the housing (23 ') of the die part (20') in a circumferential zone and has ring segments (71, 72) in places, which produce the inner profile (67 to 69) interacting with the sliding plate (30 '), and the ring segments (71, 72) protrude into a slot in the housing (23'), which extends in the area of a the sliding plate (30 ') receiving channel (25') is arranged.

13. Snap fastener according to one or more of claims 6 to 12, characterized in that the maximum angle of rotation for actuating (73) the rotary handle (66), which determines the unlocking position of the sliding plate (30 '), is limited by internal stops and the Internal stops on the one hand from areas of the inner profile (67 to 69) of the rotary handle (66) and on the other hand from the inner edges of the housing (23 ') and / or the sliding plate guided therein (30 ') are formed.

14. Snap fastener according to claim 13, characterized in that the spring force (46 ') exerted by the sliding plate (30') in the rotational position of the rotary handle (66) exerts a restoring torque (74) on the rotary handle (66) and this in automatically resets its starting position.

SPARE BLADE (RULE 26)