CN1161186A

CN1161186A - Clasp with unfolding buckle

Info

Publication number: CN1161186A
Application number: CN 96123388
Authority: CN
Inventors: F·A·艾拉德; M·P·拉塔斯基
Original assignee: Grandjean SA
Current assignee: Grandjean SA
Priority date: 1995-11-21
Filing date: 1996-11-20
Publication date: 1997-10-08

Abstract

The bracelet clasp is of the unfolding buckle type comprising a base(1) and two strips(2, 4) capable of folding down onto the base. A cover(10) held by a push button(12) maintains the clasp in a closed position. The clasp comprises means for the instantaneous raising of the cover(10) when pressure is exerted on the push button(12) to open the clasp. This device avoids a notch locking device which leads to a laborious manoeuvre for opening the clasp. Incidentally, the strands(8, 9) of the bracelet are hinged onto the strips(2, 4) which allows the bracelet to be presented flat.

Description

Fastening with unfolding buckle

The present invention relates to a kind of Wristlet clasp that launches button-type, it comprises a substrate, at least one can fold into suprabasil first band, be fixed together by the end of first hinge the substrate and first band, and the other end of first band has the fixedly device of the first cable band of watchband, a covering, when folding into suprabasil position, pin first band, described covering fixes in the described substrate by a hinges fixing, so that make it can teeter with respect on the longitudinal direction of watchband, and one be fixed on suprabasil button, so as with described covering latch fitting in described substrate.

Known example such as patent documentation CH-A-666165 and the EP-A-0319461 that satisfies above-mentioned General Definition.

Disclose a kind of fastening in patent documentation CH-A-666165, it comprises that a substrate and one can fold into suprabasil band.By a joint pin substrate and band hinge joint are held them on the closing position together and by a notch.For fear of any fastening of opening unintentionally, utilize one second joint pin with covering or bridge spare crosswise fixed in substrate.This covering can fold on the cable band of band and watchband fixed thereon.When downward, covering is pinned by a notch when folding.

Disclose a kind of fastening of same type in patent documentation EP-A-0319461, it comprises a substrate and two folding bands.A covering is hinged in the substrate, and this covering is laterally folded to substrate on can the longitudinal direction with respect to watchband.Utilize a trapezoidal hinge that the end of each cable band is linked to each other with a band.In the downward folding position of band, and when covering folds in the substrate, then when stopping trapezoidal hinge fraction, this covering is pressed in this substrate, so that prevent any unintentionally to the unlatching of fastening.

Should be noted that, in both of these case all be covering is pressed to suprabasil.This just means, in order to discharge covering and to open fastening, must apply the active force of finger on covering.Because the designer wishes to guarantee the suitable chucking power to covering, in the use of selling product and several years later on, the designer will guarantee the locking device firm in appearance.This will force the user emitting injury danger own or lane damage nail to come covering is applied bigger strength.Yet in patent documentation EP-A-0319461, its 3rd embodiment provides a fastening that is fixed with button, but action button discharges covering.Yet, should see that the pressure that acts on the button can not promote covering, therefore must follow a finger lift action, this will make breakdown action complicated.

For fear of these shortcomings, fastening of the present invention is characterised in that it only needs very little power to discharge covering, and this is because it comprises the device that promotes described covering immediately, opens fastening when exerting pressure on button with box lunch.

The advantage of being brought by this special device of the present invention becomes more obvious according to the following description that is accompanied by the embodiment of band accompanying drawing, wherein:

Fig. 1 is the perspective view that is in the fastening of the present invention of enable possition;

Fig. 2 is that this fastening is in the closed position along the sectional side elevation of the II-II line fastening of Fig. 1;

Fig. 3 is that this fastening is in the closed position along the cross-sectional figure of the III one III line fastening of Fig. 1;

Fig. 4 is the fastening top view along arrow IV among Fig. 1, shown in fastening in the closed position;

Fig. 5 is the devices illustrated of covering shown in the figure before being used to promote.

As Fig. 1, shown in 2 and 4, this fastening comprises that two fold into suprabasil band, but can only comprise such band.

Even this fastening only comprises a single band, shown in the left side of figure, a cable band of watchband will directly be hinged in the substrate, and another cable band will be hinged on that end that only has band, as shown on the right.The present invention can include the suitable fastening of one or two band, will be illustrated according to the fastening that has by two bands now.

Fastening comprises a substrate 1, and this substrate is crooked so that adapt to the curve of wearer's wrist.Fastening also comprises first band 2 and second band 4 that can fold into above the substrate 1.Utilize first hinge 3 that the substrate 1 and first band 2 is fixed with each other at their end.Have at the other end of first band 2 and to be used for fixing the first cable band that constitutes watchband or the fixture of chain 8.Equally, by second hinge 5 that the substrate 1 and second band 4 is fixed with each other at the one end.Have at the other end of second band 4 and to be used for fixing the second cable band that constitutes watchband or the fixture of chain 9.As shown in Figure 3, this fastening also comprises a covering 10, and this covering is fixed in the substrate 1 by hinge 11, so that realize with respect to the teeter of watchband on vertically.This covering is locked in first band 2 and second band 4 in the substrate 1, and this will be described in detail below.This fastening also comprises a button 12 that is installed in the substrate 1, is used for covering 10 is locked in substrate 1, and this also will be described below.

Principal character of the present invention comprises feedway 13, is used for mentioning covering 10 immediately when button 12 is exerted pressure, so that open fastening.Device 13 all can be seen in institute's drawings attached.

This feedway can be realized with different modes.A kind of mode can be designed as a spring part of inserting substrate 1, and makes its neighbour by under covering 10.For example, can be a single reed in a groove of substrate.

Fig. 1 preferably selects a spheroid to Fig. 5 explanation.As what clearly express at the details drawing of Fig. 5, spheroid 14 is fixed in the blind pipe 15.The top of pipe 15 has a keeper, and this keeper is by resisting this spheroid of clamping by the power of helical spring 17 generations.This spring is arranged between the bottom 18 of spheroid 14 and pipe 15.When fastening was in the close position, 10 pairs of spheroids of covering 14 produced pressure, and spheroid 14 downward pressuring springs 17, as shown in Figures 2 and 3.In case when discharging covering 10 by pushing button 12, then spheroid 14 lifts (see figure 3) as the upspringing part of covering with covering 10.Its result is to be easy to make covering to swing in as shown in Figure 1 the position of opening fully.The generation of this swing does not need to overcome the chucking power of the notch fastening system that uses in the fastening of described prior art in front.In addition, be understandable that if spring force is enough strong, this spheroid can be opened covering fully and not need wearer's intervention.

As shown in Figure 3 and Figure 4, around the pipe 15 of spheroid 14, for lifting device, also satisfy and realized an additional function.Illustrated among several figure that pipe 15 crosses a shape hole, the ellipse garden of length 19 that is arranged in button 12.Like this, the pipe 15 that embeds in the substrate 1 can play the effect that limit button moves, and pipe 15 can prevent that button from leaving substrate 1, penetrates described substrate and limit it on the other hand on the one hand.

As shown in Figure 3 and Figure 4, the button 12 of fastening is a fixing flat board, so that slide into substrate under the effect of the restoring force of spring 20.Opposite with spring 20, this flat board 12 comprises a bead 30, and this bead is also exerted pressure with finger thereon from the substrate upper process.As Fig. 1, Fig. 3 and shown in Figure 4, dull and stereotyped 12 comprise two hypotenuses 21 (single hypotenuse is also enough).As the more clearly expression of Fig. 3 institute, when covering 10 was closed, dull and stereotyped 12 hypotenuse 21 fasteners were below the groove 22 of covering 10.When exerting pressure on dull and stereotyped 12 flange 30, hypotenuse 21 discharges from groove 22, and then covering 10 rises under the ejection force effect that produces immediately being acted on by spring 17 on the spheroid 14.

Cable band or

chain

8 and 9 are how to be fixed on

corresponding band

2 and 4 as can be seen by Fig. 1, Fig. 2 and Fig. 4.

Fixture

6 and 7 respectively comprises a L shaped element 23, and this sees clearlyer in Fig. 1.On the long end of L shaped element 23, has first a hinge pin 25 that is hinged with the cable band thereon.And on the short end of L shaped element 23, have second a hinge pin 24 that is hinged with

band

2 or 4 thereon.This two hinged watchband that makes seems very smooth in the show window in shop or in showing occasion, this is different with the situation of disclosed watchband in above-mentioned patent documentation EP-A-0319461, and this is to connect owing to disclosed L shaped element tool in the document has plenty of the cable band that can not rotate on pivot.This smooth outward appearance needs littler height space, makes that aesthetically watchband has more superiority simultaneously.

At last, as Fig. 1, Fig. 2 and shown in Figure 4, L shaped element 23 has a weak point portion 26, when fastening is in the close position, the upper surface of this weak point portion 26 be positioned at covering 10

horizontal edge

27 or 28 below.The locking of

band

2 and 4 is considered in this arrangement.Should be noted that at last comprise groove 31 and 32 (not shown) under the substrate 1, they cooperate (built-in) with the end of

band

2 and 4 respectively, it guarantees to be used to close the fixing of fastening second safety device, and first safety device is determined by covering 10.

Claims

1, a kind of Wristlet clasp with expansion button-type, it comprises a substrate (1), at least one can fold into suprabasil first band (2), be fixed together by the end of one first hinge (3) the substrate and first band, and the other end of first band has the fixedly device (6) of the first cable band (8) of watchband, can pin the covering (10) of first band (2) during a position on folding into substrate (1), described covering (10) is fixed in the described substrate (1) by hinge (11), so that it can teeter with respect on the longitudinal direction of watchband, a button (12) that is fixed in the substrate (1), be used for described covering (10) is locked in described substrate (1), it is characterized in that it comprises the device (13) that promotes described covering (10) immediately, when on button (12), exerting pressure, in order to open fastening.

2, fastening as claimed in claim 1, the device 13 that it is characterized in that being used for promoting immediately covering (10) comprises a spring part (13) that is fixed on substrate (1), this spring part abuts against under the described covering (10).

3, the fastening following as claim 2, it is characterized in that described spring part (13) comprises that one is embedded in spheroid (14) in the blind pipe (15) in the substrate (1) by the hole, the localization part (16) that has a clamping spheroid at the top of pipe is settled a backspring (17) between the bottom (18) of spheroid (14) and pipe (15).

4, fastening as claimed in claim 3 is characterized in that the button (12) of fastening comprises a long shape hole, ellipse garden (19), and pipe (15) passes this hole and limits moving of described button.

5, fastening as claimed in claim 1, it is characterized in that button is a fixing flat board (12), so that under the effect of the screen resilience of spring (20), in substrate (1), slide, this half plate comprises the limit (21) that is used to limit its device that moves (19) and at least one inclination, and hypotenuse is used to be hooked in covering (10) at least one notch (22) with respect to the horizontal edge of hinge (11).

6, fastening as claimed in claim 1, it is characterized in that fastening comprises second band (4) that can fold in the substrate (1), utilize second hinge (5) that an end of the substrate and second band is fixed with each other, and the other end of second band has the fixedly device (7) of watchband second cable (9), simultaneously, pin described first band (2) and second band (4) during the position of covering (10) on folding into substrate (1).

7, as claim 1 or 6 described fastenings, it is characterized in that being used for cable band (8,9) is fixed to corresponding band (2,4) fixture on (6,7) comprises a L shaped element (23), each end of L shaped element comprises device (24,25), be used on the one hand described element (23) being hinged on described band (2,4), on the other hand described element (23) is hinged on the described cable band (8,9).

8, fastening as claimed in claim 7 is characterized in that when fastening is in the close position, and the short portion (26) of L shaped element (23) is positioned at below the horizontal edge (27,28) of covering (10), guarantees closure like this and prevents opening of fastening.