DE7338495U - Clasp for watch and jewelry bracelets - Google Patents

Description

GM-4 5

USER PATTERN REGISTRATION

RODI & WIENENBERGER AG. 753 Pforzheim
Bleichstr. 56-68

Clasp for watch and jewelry bracelets

The present utility model relates to a lock for watch and jewelry bracelets, which by pivoting a flap can be opened or closed.

Numerous closures of this type have already become known in which the closure flap with a so-called Latch is provided which latches in the closed state of the flap with the lock case, so that the flap is secured in the closed position. These closures have the defect that the closure flaps Due to the existing manufacturing tolerances have a very different closing force torque that the closing flaps either too difficult or too easy to open.

Therefore, such closures have to be made accessible by hand in the final inspection, which is very costly means. In this case, the closing force iuoiuent set too high, there is a risk that the fingernails will break off when the flap is opened, while If the closing force torque is too low, the lock opens automatically, and with it the watch or that Piece of jewelry can be lost. It is also perceived as a deficiency that the closure flap when opened by 180 ° can pivot. This allows the connecting link hung in the closure flap of a watch strap unhook the opened lock automatically, which can lead to the loss of the watch or the piece of jewelry. These shortcomings should be eliminated with the present utility model.

According to the innovation, the closure flap has a lever arm extending beyond its pivot point on which a in the lock case provided leaf spring element rests under tension, which the flap in closed like holding open position. For this purpose, a separate leaf spring can be provided in the lock case or the top wall of the lock case itself as a leaf spring element be formed, which rests under tension on a lever arm of the closure flap. This is the end of the Leaf spring preferably provided with a transverse groove into which the closure flap in the open state with its Lever arm can snap in, whereby it is fixed in a position in which one half of the belt is done by hand unhooked, but cannot automatically separate from the lock. In this way a closure is created which is no longer dependent on tight dimensional tolerances in terms of its closing force, but is simple and economical

can be produced without it having to be made commercially available in expensive manual labor. This is an even Closing force torque achieved that can be determined so precisely can prevent jamming of the closure flap and breakage of fingernails when opening the closure will. In addition, the closure flap is locked in the open state in a preferably pivoted out by approximately 90 ° Angle to the lock case, that even if the lock is opened unintentionally, the two ends of the tape cannot separate, so that the piece of jewelry or watch cannot be lost.

The drawings show two exemplary embodiments of the utility model shown in four figures, which show:

Fig. 1 shows a closure in the closed state in a view, partially in section

Fig. 2 the same closure with pivoted closure flap in a view, partially on average

3 shows a further exemplary embodiment of the closure with the closure flap closed in view

Fig. 4 the same closure in the open position in a view, partially in section.

The lock A is formed from only two parts, namely the lock case 1 and the articulated thereon Closure flap 2. The lock case 1 has here

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a floor 3 on which the side walls 4 are raised on both sides. The lock case 1 can be set back with its bottom 3 at one end at an angle of 180 ° and is formed into a loop 5 which continues in the form of a spring arm 6. Bearing holes 7 are provided in the rare walls 4, in which the closure flap is pivotably held with pin 8. In the closed state, the flap 2 lies with its cover 9 over the entire lock case 1 and, viewed in longitudinal section, is ^{bent at its articulated end to a 11} U ^{; t} , on the short lower arm 10 of which the pegs 8 are formed. The leg 10 of the closure flap 2 extends beyond the pivot point of the pin 8 with a lever arm 11 on which the spring arm 6 of the lock case 1 rests under strong pretension. This spring arm exerts C ^l _ ü, it is held closed 11 a torque on the flap 2, which firmly presses against the ScMoßkastens I in accordance with the reaction force of the spring arm 6 to the loop 5 whereby the shutter A to the lever arm. The connecting web 12 of the band halves, not shown, extends here once across the loop 5 of the lock case 1, where it can be hung by simply lifting the spring arm 6 when starting the shooting, while the other web 13 of the band half to be released is in the area of the U -Bend of the closure flap 2 is held captive.

If you now open the flap 2, its lever arm acts 11 / eccentrically on the spring arm 6, the opposite its spring force is raised. Has the locking flap 2 pivoted by about 90 relative to the lock case 1 When the opening position is reached, the lever arm 11 engages the closure flap 2 into a transverse groove 14 formed on the spring arm 6, whereby the closure flap 2 is locked and can no longer be swung open. In this

In the position of the closure flap 2, the connecting web 13 can indeed be lifted out of the U-shaped end of the closure flap 2 but it cannot release its connection with the lock automatically and thus unnoticed. These the fixed opening position of the closure flap 2 also allows a much simplified handling of the closure, since this closure flap 2 no longer needs to be held by hand in a vertical position in order to to hang up the connecting bridge 13 of one end of the tape. The fingers of the hand engaged in hanging the end of the tape can now only for holding and hanging in the connecting bridge 13 are used in the flap 2, reducing the risk that the clock z. B. at Apply to the wrist falls on the floor.

In the exemplary embodiment of FIGS. 3 and 4, the lock B is formed in a similar manner from the lock case 1 'and a locking flap 2' which, when viewed in a longitudinal section, is suitable. Here, too, the lock case 1 'essentially has a bottom 3 ¹ with side walls 4', in which the latter the bearing holes 7 'for the pins 8' of the closure flap 2 'are provided. The bottom 3 'is connected at its end to a connecting web 12' of the eyelet 15 formed a band half female, while the connection web is ^r as described above, suspended 13, in the flap 2 '.

In contrast to the embodiment of Figures 1 and are in the area of the eyelet 15 on the outer edges of the bottom 3 ' Shaped lugs 16 which, when bent inward, clamp a separate leaf spring 17 with a transverse groove 14 'on the bottom 3' halce. Here, too, the leaf spring 17 lies under a certain prestress on the lever arm 11 'of the closure flap and holds it, as described in the first embodiment, in the closed and open position.

733149524.1.74

Claims (5)

PROTECTIVE CLAIMS 1. Closure for watch and jewelry straps, consisting of a lock case connected to the egg strap half and a closure flap pivotably arranged on the lock case, characterized in that the closure flap (2, 2 ¹ ) has a lever arm (11. 11 " ) has on which a in the lock case (1, 1 ¹ ) provided leaf spring element (6, 17) rests under bias, which holds the flap (2, 2 ') in the closed and open position. 2. Pre-closure for watch and jewelry straps according to claim 1, characterized in that the closure flap (2, 2 ¹ ) has a U-shaped in the view in longitudinal section with a long leg as a cover (9 _f 9 ') and a short leg (10, 10 '), wc egg on the short leg (10, 10') on both sides pins (8, 8 ') are provided, which are in bearing holes (7, 7') of the side walls (4, 4 ¹ ) of the lock case (1, 1 ') are pivotably mounted, the short leg (10, 10') extending beyond the pin (8, 8) and forming a lever arm (11, 11 ') on which a leaf spring element (6, 17) ui.-er preload is applied. 3. Closure for watch and jewelry straps according to claim 1 and 2, characterized in that the bottom (3) of the lock case (1), forming a loop (5) at one end, is bent back by 180 °, the loop (5) extending into The form of a spring arm (6) continues, which rests under pretension on the lever arm (11) of the closure flap (2). 7331495 2U. H 4. Closure for watch and jewelry straps according to claim 1
and 2, characterized in that a leaf spring (17) is attached to the bottom (3 ') of the lock case (V) and rests ^{under pretension on the lever arm (11 *) of the closure flap (2 1).} 5. Closure for watch and jewelry straps according to claim 1 to 4, characterized in that the spring arm (6) or the leaf spring (17) at its free end t. Ine
Have transverse groove (14, 14 ') into which the lever arm (11, 11 ") of the closure flap (2, 2") engages and is held at a certain pivoting angle. Rodi 7331495 2M