JPH0814627B2 - Register ring structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure of a timepiece register ring.

[Conventional technology]

Prior art relating to the present invention includes Swiss Patent 5033.
There is No. 05 bulletin. As shown in FIGS. 8 and 9, this patent discloses a body 21 having a rotating bezel 22 and a block member 24 for preventing rotation of only one of the rotating bezel 22 between the two parts 21, 22. In a watch case consisting of
Guidance of the rotating bezel 22 around the body 21 is achieved by an elastic line 23 arranged between the rotating bezel 22 and two rotating cylindrical surfaces belonging to each of the body 21, which elastic line 23 surrounds the body 21. It is arranged so as to alternately contact each of the surfaces at points divided into.

Further, the block member 24 is extended and arranged between the body 21 and the rotating bezel 22 and has a body 21 of 180 ° or more.
Surrounding it.

One end of the extended block member 24 is fixed to the fixing portion 26 of the case body 21, and the locking portion 28 at the other end is disregarded in the notch 27 in the inner circumference of the lower surface of the rotating bezel 22.

[Problems to be Solved by the Invention]

In the prior art, as shown in FIGS. 8 and 9, a body 21 having a rotating bezel 22 mounted thereon and the two parts 21, 22 are provided.
9 is a watch case composed of a block member 24 in which the rotating bezel 22 is prevented from rotating only one side, and a structure in which a locking portion 28 of the block member 24 prevents reverse rotation in FIG. Since 27 is an arc less than a semicircle, when the locking portion 28 of the block member 24 engages there, the contact area is small and it is not possible to sufficiently prevent reverse rotation. Also, the locking portion 28
Since the notch 27 at the contact portion has a shallow depth, the locking portion 28 is easily disengaged, and this shape is considerably unreasonable from a structural point of view. If the circular arc is made larger than a semicircle, the locking portion 28 is deeply caught during rotation due to the circular arc and the rotatability becomes worse. The number of peaks is less than 60 and the practicality as a rotating bezel function is lost.

Further, the locking portion 28 and the fixing portion 26 of the block member 24 have the body 21
Since they are arranged at both ends of 180 ° or more around the periphery of the block, the blocking force is applied to the locking portion 28 of the block member 24 and the notch 27 of the rotating bezel 22 to prevent the rotation of the block to the inner wall of the rotating bezel 22. It acts to guide the member 24, and the block member 24
Due to the above behavior, the gap generated by the block member 24 extending along the inner wall of the rotating bezel 22 is
Backlash will occur. Therefore, it is ideal to set the gap as small as possible, but in FIG. 9, the locking portion of the block member 24 is rotated when the rotating bezel 22 is rotated.
A minimum gap is required for the movement of 28, and since the gap is set around the entire circumference between the block member 24 and the body 21, a lot of rattling occurs, and the operability and stability of the rotating bezel 22 are reduced. There is a fatal problem that the click position accuracy is deteriorated and backlash occurs when the rotary bezel 22 is used as a register ring.

An object of the present invention is to solve the above problems and to provide a structure of a thin and small register ring for a timepiece, which has improved operability of a rotating ring and stability such as click position accuracy.

[Means for solving the problem]

According to the configuration of the present invention, the register ring is rotatably attached to the outer periphery of the upper surface of the barrel, the ratchet groove for positioning is provided on the inner wall of the register ring, and the ratchet groove is engaged between the register ring and the barrel. In the structure of the register ring in which a spring is disposed, the click spring having a curved planar shape includes at least one click portion, a bent portion obtained by bending one end toward the center, or a chamfered portion obtained by chamfering the outside of the one end. And a fixed end for fixing to the body between the both ends, the fixed end is fixed to the body, and the click portion is engaged with the ratchet groove.

Further, in order to eliminate play in the vertical direction of the register ring rather than in the rotational direction, a plurality of convex portions and / or concave portions may be formed on the upper surface and / or the lower surface between both ends of the click spring.

〔Example〕

 Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view of a main part of a register ring portion, FIG. 2 is a lateral sectional view of a register ring portion, and FIGS. 3 to 7 are perspective views of a click spring.

A peripheral projection 3 is formed on the outer wall 1a around the time display opening formed on the body 1 of the watch case, and the peripheral projection 3 is engaged with the projection 2a formed inside the register ring 2. A gap is secured between the outer wall 1a having the circumferential projection 3 and the inner wall 2b of the register ring 2. A plurality of ratchet grooves 5 are formed on an inner wall 2b of the register ring 2 facing the outer wall 1a, and a click spring 4 having a curved planar shape is arranged in the gap along the inner circumference of the ratchet groove 5. Further, a click portion 4a for preventing reverse rotation is elastically provided in the ratchet groove 5 on the other end portion of the click spring 4 so that the register ring 2 can be rotated with an appropriate moderation.
Further, the register ring 2 is engaged with the circumferential projection 3 of the case 1 at the same time, and at the same time, the fixed end 4b formed between both ends of the click spring 4 is engaged with and fixed to the hole 1b of the case 1. In order to prevent one end of the click spring 4 from engaging with the ratchet groove 5 of the register ring 2, 4e is provided.
Is a bent portion obtained by bending one end of the above toward the center.

Next, FIGS. 3 to 7 are various click springs used in the register ring structure of the present invention.

FIG. 3 shows that the other end of the click spring 4 is provided with a click portion 4a for preventing reverse rotation and a second click portion 4f is provided at one end thereof. A click feeling is obtained. Incidentally, 4b
Is the fixed end.

FIG. 4 shows two convex portions 4c on the upper surface of the click spring 4,
The recesses 4d are formed on the opposite surfaces of the lower surface to eliminate the vertical play of the register ring 2. By using the click spring 4, the body 1 and the register ring 2
Even if the processing precision of is worse than usual, the back and forth play of the register ring 2 does not occur. In addition, 4a is a click portion provided at the other end of the click spring 4 for preventing reverse rotation, and 4e is a click spring 4.
Is a bent portion provided at one end of the.

In FIG. 5, a click portion 4a for preventing reverse rotation is provided at the other end of the click spring 4, and a chamfered portion 4g is provided outside the one end. The chamfered portion 4g is for preventing one end of the click spring 4 from engaging with the ratchet groove 5 of the register ring 2.

FIG. 6 shows a click spring 4 provided with a click portion 4a for both rotations at the other end and a bent portion 4c at one end.

FIG. 7 shows two clicks provided between the other end of the click spring 4 and the fixed end 4b. The other end has a click part 4a for preventing reverse rotation and a second click near the other end. The portions 4f are formed respectively. By using the click spring 4, backlash of the register ring is almost eliminated.

〔The invention's effect〕

As is clear from the above description, according to the present invention, the click portion and the fixed portion of the click spring are not arranged at both ends of 180 ° or more of the circumference of the body but are arranged between the both ends. Therefore, the play due to the play of the click spring is reduced,
Positioning accuracy when clicking the register ring is improved and backlash is reduced.

Further, since the fixed end of the click spring corresponds to the fulcrum of the lever, even if the click spring is a thin or thin plate spring, it is possible to always supply the necessary spring force to the click part at the tip, thus stabilizing the rotatability of the register ring. At the same time, the register ring can be made thinner and smaller, which has a great effect on the design appearance. In addition, since one end of the click spring is bent toward the center or a chamfered part is formed by chamfering the outside of one end of the click spring, one end of the click spring contacts the ratchet groove of the register ring. , It is possible to obtain smooth and stable rotation without causing engagement or the like.

Further, if the ratchet groove of the register ring is made of sawtooth, the reverse rotation can be surely prevented, and the operability and stability of the horizontal ratchet structure can be improved.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention. FIG. 1 is a sectional view of a main part of a register ring portion, FIG. 2 is a lateral sectional view of a register ring portion, and FIGS. 3 to 7 are click springs. FIG. 8, FIG. 8 and FIG. 9 are conventional sectional views, FIG. 8 is a sectional view of a main part of a rotating bezel portion, and FIG. 9 is a partially enlarged sectional view of the rotating bezel portion. 1 ... Trunk, 1a ... Outer wall, 1b ... Hole, 2 ... Register ring, 2a ... Projection, 2b ... Inner wall, 3 ... Circular projection, 4 ...
… Click spring, 4a …… Click part, 4b …… Fixed end, 4c
...... Convex part, 4d ...... Concave part, 4e ...... Bent part, 4f ...... Second click part, 4g ...... Chamfer part, 5 ...... Ratchet groove.

Claims (2)

[Claims] 1. A click spring in which a register ring is rotatably attached to an outer periphery of an upper surface of a body, a ratchet groove for positioning is provided on an inner wall of the register ring, and the ratchet groove is engaged between the register ring and the body. In the structure of the register ring, the click spring having a curved planar shape includes at least one click portion, a bent portion obtained by bending one end toward the center, or a chamfered portion obtained by chamfering the outside of the one end. A fixed end for fixing to the barrel is formed between both ends, the fixed end is fixed to the barrel, and the click portion is engaged with the ratchet groove. Register ring structure. 2. An upper surface between the ends of the click spring or /
The structure of the register ring according to claim 1, wherein a plurality of convex portions and / or concave portions are formed on the lower surface and the lower surface.