Watch with double watch-surface and method for disassembling same

A watch comprising:

• a casing, the casing having an abutting ring portion which protrudes inwardly and a center of the abutting ring portion being a hollow portion;
• wherein the abutting ring portion is provided with a receiving groove, which is provided with a convex portion;
• wherein two grooves are formed on two sides of the convex portion and a casing through hole penetrates through the casing and the convex portion;
• wherein top and bottom surfaces of the casing are provided with a plurality of pressing protrusions arranged equidistant from each other, wherein a first and a second of the pressing protrusions are located above and below the receiving groove respectively;
• wherein a first accommodating space is provided between the pressing protrusions on the top surface of the casing and the abutting ring portion and a second accommodating space is provided between the pressing protrusions on the bottom surface of the casing and the abutting ring portion;
• a first watch-surface which is placed on a top surface of the abutting ring portion, and movement components on the first watch-surface are located in the hollow portion;
• a second watch-surface which is placed on a bottom surface of the abutting ring portion, and movement components on the second watch-surface are located in the hollow portion;
• an adjusting and snapping component which comprises an adjusting screw, an assembly connector, an H-shaped snapping member and an abutting screw;
• wherein the assembly connector is convexly provided with an engaging portion and a threaded through hole, and is assembled to the casing through hole from an outside of the casing using the engaging portion;
• wherein the adjusting screw is provided with an external thread portion and a hollow thread portion, and is screwed and assembled with the assembly connector from the outside of the casing;
• wherein the external thread portion of the adjusting screw is protruded from the assembly connector;
• wherein the H-shaped snapping member is provided with a threaded through hole and two raised portions on both sides, forming a top recess and a bottom recess in the middle of the two raised portions;
• wherein the H-shaped snapping member is screwed to the external threaded portion of the adjusting screw;
• wherein the abutting screw is screwed to the hollow threaded portion of the adjusting screw;
• wherein through the forward rotation of the adjusting screw, the H-shaped snapping member can be moved toward the convex portion of the abutting ring portion to cause the two raised portions to abut against the two grooves on the two sides of the convex portion of the abutting ring portion;
• wherein when the adjusting screw is reversely rotated, the two raised portions are moved away from the two grooves;
• wherein when the H-shaped snapping member abuts against the abutting screw while the adjusting screw is reversely rotated, movement stops;
• two snapping rings which each are downwardly provided with a flange, which is provided with a plurality of engaging protrusions arranged equidistant from each other;
• wherein the flange is provided with a notch on both sides of a first protrusion of the engaging protrusions;
• wherein an inner ring of each of the snapping rings is annularly provided with a pressing portion and a groove;
• transparent covers which are engaged with the respective grooves of the respective snapping rings;
• wherein the two snapping rings are respectively engaged with the top surface and the bottom surface of the casing;
• wherein each of the snapping rings are disposed on the abutting ring portion with the plural engaging protrusions engaging the plural pressing protrusions;
• wherein the pressing portion of a first of the two snapping rings is pressed against the first watch-surface and the pressing portion of a second of the two snapping rings is pressed against the second watch-surface so that the first engaging protrusion and the notches of the respective snapping rings are aligned with the convex portion and the two grooves of the abutting ring portion;
• wherein when the adjusting screw is forwardly rotated to make the H-shaped snapping member close to the convex portion, the two raised portions pass through the two notches of the respective snapping rings and abut against the two grooves;
• wherein the first engaging protrusions are respectively located in the first and second accommodating spaces between the convex portion and the first and second pressing protrusions, and are also respectively engaged in the top and bottom recesses of the H-shaped snapping member;
• and
• wherein other of the plural engaging protrusions are all located under other of the plural pressing protrusions, achieving the effect of engaging and fixing the two snapping rings to the casing.