A device for fixing a bracelet to a watch case includes at least one horn and a bracelet strand. The horn and the bracelet are held together by a bar. The horn includes a rigid blade arranged to fit together with at least one recess made in the bracelet strand. The at least one recess has an opening for receiving the blade during the placement of the bracelet strand so as to form a rigid link once the bar is put in place.

A device for attaching a bracelet or strap to a watch case includes at least one horn integral with the watch case, and an insert integral with the end of a bracelet strand. The horn and the insert are complementary to cooperate by interlocking with each other to form a removable assembly able to make the bracelet interchangeable. The insert includes at least one stud subjected to the action of a spring, at least one stud being arranged to cooperate with at least one housing in the horn, the horn including a control member projecting radially with respect to the horn, in order to move the stud from a deployed position in which the stud holds the strand on the horn, to a retracted position in which the strand is released from the horn.

Watch case (1) having a middle (2) provided with a blind hole (20); a first mobile horn (3) for fastening a strand of a bracelet, and provided with a through-hole (33); a first elastic element (31) exerting a force on the horn (3) that tends to push it back into a position with a widened lug distance (d); a push-button (5) traversing said through-hole (33) and engaged in the blind hole (20) in the middle, arranged so as to be able to slide between a locked position, in which the push-button (5) blocks the displacement of the horn (3), and a released position in which the displacement of the horn (3) into pushed-back position is possible, a second elastic element (52) exerting a force on the push-button (5) to push it hack into the locked position.

Disclosed are a connecting apparatus for a watch strap that enables a user to simply replace a watch strap without a separation tool, and a watch strap with the connecting apparatus. The connecting apparatus connects a body of a watch and a watch strap, and includes at least: a tube having a first hole; a first pin inserted in and being able to protrude from a first end of the tube; a second pin inserted in and being able to protrude from a second end of the tube; a spring disposed between the first and second pins, providing elasticity to the first and second pins, in first and second directions, respectively; a protrusive member connected to the first pin and protruding through the first hole; and a slider connected to the protrusive member, moving the first pin in the second direction, and having a portion overlapping the first hole.

A sleeve for use in an assembly for coupling a wristworn device to a first end of a strap. The sleeve has a first end dimensioned to be received in the recess in the inner face of the first lug of a wristworn device, an inner cavity dimensioned to receive therein the first end of a conventional spring bar, and a retractor coupled to the sleeve for urging the first end of the spring bar towards the second end of the spring bar. The second end of the spring bar is coupled to the second lug, the spring bar is coupled to the strap, the first end of the spring bar is positioned in the inner cavity of the sleeve and the first end of the sleeve is coupled to the first lug. A removable retractor for use with a spring bar, which allows for the use of a plurality of spring bars and therefore, lends itself to widespread use and retrofitting of an assembly that couples a strap to a wristworn device, is also provided.

A bar for securing a watch wristlet including a hollow inner tube arranged in the hollow body, and is configured to co-operate with the first pivot and the second pivot. The second pivot and the spring are inserted in the hollow inner tube. The hollow body and the hollow inner tube being configured such that a displacement of the lug along the longitudinal groove towards the second pivot gives rise to a displacement of the second pivot, in the hollow inner tube, towards the lug, the user can easily retract the two pivots by manual action on the lug, with the simple movement of a finger, and without a tool. In fact, since the lug is integral with the first pivot, this action by the user tends to bring the first and second pivots towards one another inside the hollow body.

A one-piece bar is for attaching a bracelet to a watch. The bar extends in a longitudinal direction and includes two pivots and a body connecting the two pivots, each pivot being intended to be introduced into a corresponding housing of a respective horn of a watch case. The body includes a plurality of elements connected to one another, each element having a hollowed portion, in order to give the bar longitudinal elasticity and allow elastic deformation thereof in the longitudinal direction.

A device for attaching a bracelet to a watch case, the device including, on the one hand, a bar secured to the watch case by a horn, and on the other hand, an insert integral with the end of a bracelet, wherein the bar and the insert are complementary in order to cooperate by interlocking to form removable assembly to make the bracelet interchangeable. The bar is formed by a cylindrical hollow body provided with two retractable pivots, and having at least one housing arranged to cooperate by interlocking with an insert, the bar including a device for holding the insert, and being arranged so as to pivot from a first position, in which the insert is capable of being positioned on the bar, into a second position in which the insert is locked onto the bar by locking device cooperating with the holding device.

The present application relates to a wearable device, a strap, and an engaging mechanism. The wearable device includes a watch body and a strap. The strap includes a strap body, a peg, a eject pin, and a linkage component. The strap body is provided with a receiving space, and the strap body is provided with a peg-sliding hole and a first through hole. One end of the peg passes through a peg-sliding hole and the other end is located in a receiving space of a watch body; the eject pin is located in the receiving space and can pass through the first through hole; the peg is configured to drive the eject pin to pop out from the first through hole via the linkage component and engage with the installation groove; the peg is further configured to drive the eject pin to move towards the receiving space.

A device capable of being used for a long time is achieved. A power supply, a connection method of a power supply, or a connecting member, for easy attachment and detachment and non-detachment when in use, is provided. A power supply, a connection method of a power supply , or a connecting member for easy replacement is provided. A highly designed power supply is provided. Power from a battery is supplied to an electronic device through a connecting member including a pipe, a spring, and a pair of pivots. The pair of pivots are electrically insulated from each other, and electrically connected to any one of a pair of electrodes of the battery. The electronic device into which the pair of pivots are inserted includes a pair of bearings capable of receiving power.