JPS585265Y2 - Fixed structure between case and movement - Google Patents

Description

[Detailed description of the invention] The invention relates to a fixing structure between a watch case and a movement.

Conventional fixing structures require special fixing members, such as side set screws, and are labor-intensive.

This invention has a simple structure in which the base of the movement is made of resin and a U-shaped spring hook is provided around the periphery so that the movement can be individually identified by simply pushing it into the case.

This will be explained below using the drawings.

FIG. 1 is a sectional view of an embodiment using the present invention, and describes a digital type case.

1 is the watch case, 2 is the case back, 3 is the base of the movement, and 4 is the glass.

5 is a circuit board, 6 is a lower glass, 7 is an upper glass, 8 is a connector, and 5, 6, 7° 8, etc. are assembled on the base 3.

The base 3 is made of resin and integrally has a U-shaped spring 9 around its periphery.

A hook 10 is integrally provided at the tip of the U-shaped spring 9.

There is a notch 11 in the case 1, and when the movement is pushed toward the case, the U-shaped spring 9 bends inward, but the hook 1
When the 0 fits into the notch 11, it snaps back into place and the movement is fixed to the case 1.

The slope 12 is for bending the U-shaped spring 9 inward during pushing.

When disassembling the movement, a wedge-shaped object is inserted at the position indicated by the arrow 13. When the movement is twisted, the U-shaped spring 9 bends inward, and the hook 10 comes off from the notch 11, allowing the movement to be taken out.

The vertical surface 14 regulates the side surface of the U-shaped spring 9, and serves the purpose of preventing the movement from coming off due to a mere impulse.

The upper surface 15 of the base 3 presses down the glass 4. The spring is U
The shape is obtained from the convenience of obtaining a relatively large range of elasticity change in a small space.

Also, the reason why the U-shape is concave in the direction in which the movement is pushed in is because when disassembling it, insert a wedge at the arrow 13 position as described above to easily bend the U-shaped spring 9 inward. This is because.

Furthermore, the U-shaped spring 9 can be formed integrally with the base 3 because a resin material is used.

A structure in which the surface 15 does not press the glass 4 but comes into contact with the surface 16 of the case 1 to protect the glass is also possible.

Furthermore, the fixing method using the U-shaped spring 9 according to the present invention may be used in some parts, and other parts may depend on fixing methods using other means.

In a needle-type timepiece, a member called a main plate corresponds to the base 3 described above.

The effects of embodiments of the present invention are shown below.

1. The structure is simple because there is no special member for fixing the movement and case.

2. Since the U-shaped spring 9 and the hook 10 are integrally molded from resin with the base 3, manufacturing is easy.

3. Easy to assemble and disassemble.

With the above ideas, a rational case and movement fixing structure can be realized.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment using the present invention. 1...Case, 3...Base, 9...
...U-shaped spring, 10...Hook, 11.
...notch.

Claims (1)

[Scope of utility model registration request] In the fixed structure between the watch case and the movement, the base of the movement is molded from resin, and has an integral U-shaped spring around the periphery, and a hook is integrally attached to the tip of the U-shaped spring. On the other hand, the case has a notch, and when the movement is pushed into the case, the hook fits into the notch and is elastically fixed, and the U-shaped spring has a concave U shape in the pushing direction. A fixed structure between the case and movement, characterized by its shape.