RU222188U1 - Bracelet lock based on magnetic fixation - Google Patents

Abstract

The utility model relates to the watch and jewelry industry and can be used for clasps of bracelets or wristwatch straps. The technical result is to ensure reliable fixation of the connection and ease of operation. The technical result is achieved by locking the bracelet based on magnetic fixation, containing the left part 1 and the right part 2, each of which is equipped with a pin 3, and these parts are separable and are designed to overlap in the closed position of the bracelet so that the bracelet forms a ring with the outer side and the inner side, while the ends of the left part 1 and the right part 2 form an overlapping area - plane 4, each part contains a section having the property of a magnet 5, characterized in that the left part 1 contains a shaped recess 6, the right part 2 contains a shaped protrusion 7 , which are elements of a “puzzle” type locking connection, the mutual movement of which is limited by the mating surfaces of the left part 1 and the right part 2 in plane 4. 4 ill.

Description

The utility model relates to the watch and jewelry industry and can be used for clasps of bracelets or wristwatch straps.

Known for “Wristwatch bracelet clasp, wristwatch bracelet with clasp and wristwatch with bracelet with clasp” (patent RU 2465793, IPC A44C 5/18, A44C 5/22, G04B 33/00, published 11/10/2012, Bulletin No. 31 ), containing articulated at least two wings of the bracelet and a means for mutual fixation/disconnection of the bracelet of the bracelet wings during their mutual connection/disconnection. The means for mutual fixation/disconnection of the bracelet flaps during their mutual connection/disconnection is made in the form of a lock containing a hook on one of the bracelet flaps and a latch on the other of the bracelet flaps, made with the possibility of engaging the hook and latch when connecting the bracelet flaps, their mutual fixation in the connected position and disengagement of the latch and hook when disconnecting the bracelet wings. The means for disengaging the latch and the hook when disconnecting the bracelet flaps is made in the form of a cam mechanism with the ability to disengage the hook and the latch when turning the cam located in close proximity to the hook and the clasp. The means for releasing the latch and hook when disconnecting the bracelet wings can be made in the form of a rotating element in the form of a disk, square, diamond, lever or push button. The bracelet contains the clasp described above. The wristwatch contains the specified bracelet. This improves the reliability of fixing the bracelet elements in the closed state and makes it easier to fasten/unfasten.

The disadvantages of this technical solution are:

- the presence of a relatively large number of mechanical joints;

- mechanical wear of the hook and latch during operation, reducing the reliability of fixation.

The closest to the claimed technical solution is the “Magnetic clasp” (application for invention 2013129211, IPC A44C 5/00, date of publication of the application: 01/10/2015, Bulletin No. 1) from the composition of a bracelet or strap with a magnetic clasp, containing the first and second flexible ends (8, 9) as part of a strip, said ends being separable and configured to overlap in the closed position of the bracelet, so that the bracelet essentially forms a ring with an outer side and an inner side, wherein the ends (8, 9) forming an overlapping region, each end having a contact surface adjacent to the contact surface of the other end in the overlapping region, the first end (8) being on the outer side of the ring and the second end (9) being on the inner side, the bracelet comprising the first section (11a, 11b; 111; 211) a magnetic circuit embedded in the first end, and a second portion (12a, 12b, 12c, 12d, 12e, 12f; 112; 212) of a magnetic circuit embedded in the second end, said first and second portions magnetic circuit is made with the ability to mutually attract each other and interact so that the contact surfaces of the two ends (8, 9) in the closed position of the bracelet are connected, characterized in that the first and second sections of the magnetic circuit each include a yoke (14a, 14b, 16a, 16b, 16c, 16d, 16e, 16f; 114, 116; 214, 216) from a soft ferromagnetic material, said yoke has an elongated shape and is located transversely to the bracelet and parallel to the contact surface of the end into which a section of the magnetic circuit is embedded, wherein said first section (11a, 11b; 111; 211) of the magnetic circuit includes a row of bipolar magnets (18A; 118A; 218A) located between the ferromagnetic yoke and the contact surface of the first end (8), the magnets in said row have polarization directions parallel to each other and perpendicular to the contact surface of the first end, and a plurality of second sections (12a, 12b , 12c, 12d, 12e, 12f; 112; 212) of the magnetic circuit are built into the second end (9), these second sections are located parallel to each other and spaced apart so as to provide the ability to select the length of the bracelet.

The disadvantage of this technical solution is the unreliable fixation of the mating parts of the fastener relative to each other.

The technical task of the proposed utility model is to develop a magnetic lock for a bracelet (strap) with reliable fixation.

The technical result of the proposed utility model is to ensure reliable fixation of the connection and ease of operation.

This is achieved in that a bracelet closure is magnetically latched, comprising a left portion and a right portion, each of which is provided with a pin, said portions being separable and configured to overlap in the closed position of the bracelet, such that the bracelet forms a ring with an outer side and an inner side. side, while the ends of the left part and the right part form an overlapping area, each part contains a section having the property of a magnet, according to the utility model, the left part contains a shaped recess, the right part contains a shaped protrusion, which are elements of a “puzzle” type locking connection made with the possibility of mutual movement perpendicular to the plane of the overlapping area.

The essence of the utility model is illustrated by drawings, where:

- in fig. 1 shows the magnetic lock of the bracelet (strap) in the unfastened position (top view),

- in fig. Figure 2 shows the magnetic lock of the bracelet (strap) in the unfastened position (side view),

- in fig. Figure 3 shows the magnetic lock of the bracelet (strap) in the fastened position (top view),

- in fig. Figure 4 shows the magnetic lock of the bracelet (strap) in the fastened position (side view).

In fig. 1 - 4 the following notations are used:

1 - left side;

2 - right side;

3 - hairpin;

4 - mating plane;

5 - area having the property of a magnet;

6 - shaped recess;

7 - shaped protrusion.

The magnetic clasp of the bracelet contains (conventionally) the left part 1 and the right part 2, each of which is equipped with a pin 3 (a standard method for attaching to a bracelet, strap and latches of a wristwatch), and these parts are separable and are designed to overlap in the closed position of the bracelet , so that the bracelet forms a ring with an outer side and an inner side, while the ends of the left part 1 and the right part 2 form an overlapping area - plane 4, and contain a section having the property of a magnet 5 (for example, a neodymium magnet pressed into the hole), the left part 1 contains a shaped recess 6, the right part 2 contains a shaped protrusion 7, which are elements of a “puzzle” type locking connection, the mutual movement of the shaped recess 5 and the shaped protrusion 6 is limited by the mating surfaces of the left part 1 and the right part 2 in plane 4.

The bracelet's magnetic lock works as follows.

To fix the lock of the bracelet, the shaped protrusion 7 of the right part 2 is inserted into the shaped recess 6 of the left part 1, thereby ensuring their only possible mutual position in two planes, excluding the movement of the right part 2 and the left part 1, due to the property of the “puzzle” type locking connection. In the third plane, perpendicular to the mating surfaces of the left part 1 and the right part 2 in plane 4, the mutual movement of the left part 1 and the right part 2 is possible only in one direction - the direction of unfastening.

Thus, the presence in the right part 2 and the left part 1 of sections that have the property of a magnet 5 (for example, a neodymium magnet pressed into the hole) ensures their reliable mutual fixation in the working direction (the direction of unfastening - fastening), due to which ease of operation is ensured, consisting in applying effort to overcome the force of magnetic interaction when unfastening in only one direction.

The use of the utility model ensures reliable fixation of the connection and ease of operation.

Claims (1)

A bracelet closure based on magnetic latching, comprising a left portion and a right portion, each of which is provided with a pin, said portions being separable and configured to overlap in a closed position of the bracelet such that the bracelet forms a ring with an outer side and an inner side, with the ends the left part and the right part form an overlapping area, each part contains a section having the property of a magnet, characterized in that the left part contains a shaped recess, the right part contains a shaped protrusion, which are elements of a “puzzle” type locking connection, made with the possibility of mutual movement perpendicular to the plane of the overlapping area.