A timepiece including a device for opening a cover including a fixed pendant mounted inside a middle part and a movable pendant for sliding within the fixed pendant towards the center of the case, the movable pendant having a guide element for moving along an axial guide groove, then in a circumferential guide groove into which the axial guide groove opens out and which is delimited by a boundary, such that, when the movable pendant is pushed, this movable pendant can be firstly displaced axially, then pivoted by an angle defined by the place at which the guide element abuts against the boundary, the movable pendant having a helical groove which comes into contact with at least one pin arranged with a clearance between the movable pendant and the locking spring and which is axially displaced towards the locking spring when the movable pendant is pushed, then pivoted, such that the pin presses against the locking spring and releases the cover.

The invention provides a watch that facilitates replacement of a watch core and a bezel, comprising a watch case provided with a connecting bezel on a front side thereof, wherein a first connecting block is disposed at the top of the watch case, a second connecting block is disposed at the bottom of the watch case, and a back watch cover is rotatably connected to a back side of the watch case. This design mode enables users to disassemble the watch core by themselves without using any tools, which is convenient for replacement.

A timepiece including a device for opening a cover including a fixed pendant mounted inside a middle part and a movable pendant for sliding within the fixed pendant towards the center of the case, the movable pendant having a guide element for moving along an axial guide groove, then in a circumferential guide groove into which the axial guide groove opens out and which is delimited by a boundary, such that, when the movable pendant is pushed, this movable pendant can be firstly displaced axially, then pivoted by an angle defined by the place at which the guide element abuts against the boundary, the movable pendant having a helical groove which comes into contact with at least one pin arranged with a clearance between the movable pendant and the locking spring and which is axially displaced towards the locking spring when the movable pendant is pushed, then pivoted, such that the pin presses against the locking spring and releases the cover.

A protective watch case for convenient assembly is disclosed, comprising: a case body and a cover body. The case body has slots, the sides of the case body not featuring slots are respectively equipped with a pivot mechanism and a latch mechanism. One side of the cover body is rotatably connected to the case body through the pivot mechanism, and the other side's inner surface of the cover body is equipped with a latch block that has a slot. The latch mechanism includes an elastic. When an external force acts on the latch pin, pushing it towards the interior of the case body, the end of the latch pin disengages from the slot, allowing the cover body to rotate through the pivot mechanism, thereby achieving the flip-opening of the watch case. This invention offers simple assembly and convenient operation.

A flip-cover protective watch case, comprising: a case body and a cover body. The case body is equipped with a cavity. The case body has a pivot mechanism and a latch mechanism. One side of the cover body is rotatably connected to the case body through the pivot mechanism, and the inner surface of the other side of the cover body is equipped with a hook. The latch mechanism includes an elastic, with the pressing plate featuring a latch tongue. When an external force is applied to the pressing plate, pushing the pressing plate towards the interior of the case body, the latch tongue on the pressing plate disengages from the said hook, allowing the cover body to rotate through the pivot mechanism, thereby achieving the flip-opening of the watch case. This invention not only protects the watch core but also offers simple and convenient operation.