JP2505313Y2 - Rotating bezel device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary bezel device for a portable timepiece, and more particularly to a rotary bezel device of stable quality for use in a submersible watch or the like.

[0002]

2. Description of the Related Art A conventional one-way rotating bezel device is a leaf spring 1 provided between a rotating bezel 12 and a body 11 as shown in FIG.
It was configured that only the elasticity of 3 in the vertical direction gives a rotational torque and a click feeling.

[0003]

However, in the above-mentioned configuration of the prior art, there is a problem that a device with a high precision cannot be obtained because radial wobble in the rotating bezel and unevenness of the rotating torque are likely to occur. Therefore, the present invention is intended to solve such a problem, and the purpose thereof is to eliminate radial rattling of the rotating bezel and eliminate unevenness of the rotating torque, thereby providing a stable and high-precision feeling. A rotating bezel device is provided.

[0004]

SUMMARY OF THE INVENTION A rotary bezel device according to the present invention comprises a barrel having a screw portion formed on an outer peripheral wall thereof, a glass fixing ring screwed and fixed to the screw portion to hold glass, and the barrel. Between the glass bezel and the rotating bezel, a rotating bezel that is rotatably mounted, a rotating bezel packing that is arranged between the glass fixing ring and the rotating bezel with a radial interference. becomes a spring member having an elastic portion at an end portion disposed in the rotating bezel is formed click groove having a stopper surface formed in a direction perpendicular to the rotation direction of the rotating bezel, the the elastic portion being disposed in the click groove, the rotating bezel is configured cormorants'm not reversed front end of the elastic portion is in contact with the stopper surface
The click groove starts from the inner peripheral edge of the bottom of the rotating bezel.
And the spring member is formed without reaching the outer circumference,
And the protruding part formed on the inner circumference, and
And a foot portion positioned in a hole formed on the outer circumference of the trunk
Are integrally formed from the same member, and the protrusion is
It is characterized in that it is sandwiched between the sleeve fixing ring and the body .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 designates a watch case, which is made of stainless steel or titanium.
A high-strength inorganic glass 6 is attached to a through a glass packing 7. A glass fixing ring 5 made of stainless steel or titanium is screwed into the threaded portion 1c of the body 1 and is firmly fixed to the body 1 by the upper wrench groove 5a.

Reference numeral 2 denotes a rotating bezel having a display plate 8 fixed by caulking to the upper portion thereof and made of stainless steel or titanium.

Reference numeral 2a is a 60- or 120-divided click groove provided on the bottom surface of the rotating bezel, which has a rectangular or right-angled triangular cross-section and is perpendicular to the direction of rotation (direction of arrow A). It has a stopper surface 2c.

Reference numeral 3 is a leaf spring, and an elastic portion 3a is formed at an end thereof. When the rotating bezel 2 is rotated in the direction of arrow A, the elastic portion 3a is easily disengaged from the click groove 2a and is moved in the opposite direction. When rotating, the tip of the stopper surface 2
The rotary bezel 2 is engaged with the click groove 2a so as not to be reversely rotated by being caught by c.

A foot portion 3b is formed on a part of the leaf spring 3 by bending, and the foot portion 3b is engaged with a hole 1b of a groove portion formed on the body 1 to perform positioning in the rotational direction.

FIG. 3 shows a sketch of the leaf spring 3. The inner protrusion 3c of the leaf spring 3 is sandwiched and fixed between the body 1 and the glass fixing ring 5.

Numeral 4 is a rotating bezel packing which is an NB containing about 10% of a self-lubricating agent of DOS (Dioctyl Sebagate).
It is made of R (nitrile butadiene rubber) and is mounted in the inner peripheral groove 2b of the rotating bezel 2 and has a diametrical interference with the glass fixing ring 5 fixed to the case 1. There is. It is preferable that the squeezing margin in the radial direction is 5 to 25% in terms of the crushing ratio, in order to improve the operability in rotation and prevent inadvertent movement such as rattling.

[0012]

As described above, according to the present invention, since the rotating bezel packing having the interference is provided between the rotating bezel and the body, the rotating bezel smoothly rotates, so that the operability is improved. As a result, the rotation selection position of the rotating bezel becomes accurate, and a high-precision feeling is obtained. Further, a force for rotating the spring member having the elastic portion at the end portion in the opposite direction to the click groove provided on the side surface portion of the rotating bezel and having the stopper surface formed in the direction perpendicular to the rotating direction is applied. In this case, since the tip of the elastic part is engaged so as to catch on the stopper surface, no action force is generated at the tip of the elastic part to disengage from the click groove. And reliability.

Furthermore, the looseness of the rotating bezel is eliminated by the tightening margin of the rotating bezel packing, and the elastic portion does not come off from the click groove even when an impact force is applied as in the case of rattling. By doing so, the reverse rotation of the rotating bezel is prevented more reliably.

Further, since the glass fixing ring is configured to be screwed and fixed to the screw portion formed on the outer peripheral wall of the case, the fixing position of the glass fixing ring for holding the glass is changed by the screw fixing to the case. Since it can be reliably maintained without doing so, there is an effect that it is possible to provide a rotating bezel device that can withstand an increase in the internal pressure of the timepiece during diving, for example.

Further, according to the present invention, the click groove is
Starting from the inner edge of the bottom of the rotating bezel and not reaching the outer edge
Due to the structure formed, the wall left on the outer periphery allows
The spring 1 member is invisible from the outside, and the degree of freedom in design is high.
In addition, even if it does not depend on the cover component of another member,
It is said that high reliability can be obtained because dirt and foreign matter do not enter.
It is effective. In addition to the above effects, the spring part
The material has elastic parts, protrusions formed on the inner circumference, and stands upright.
Legs that are bent and positioned in holes formed on the outer circumference of the trunk
And are integrally formed from the same member, and the protrusion is fixed to the glass.
Due to the structure sandwiched between the ring and the body,
And the radial positioning is done by the feet,
The inner peripheral protrusion is clamped between the body member and the rotating bezel.
There is no play in all directions of the spring member as it is actually done.
As each part of the spring member is integrated from the same member
Since it is formed, the manufacturing cost of parts can be reduced.
It Therefore, according to the present invention, in terms of size, the conventional example
Because it can be implemented in the same size as and has a small number of parts
We were able to obtain an inexpensive and highly effective rotating bezel device.
Things.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional view of a rotary bezel device of the present invention.

FIG. 2 is a partial sectional view of a leaf spring engaging portion of the present invention.

FIG. 3 is a schematic view showing an embodiment of the leaf spring of the present invention.

FIG. 4 is a vertical sectional view showing an example of a conventional structure.

[Explanation of symbols]

 1, 11 ... Body 1c ... Screw part 2, 12 ... Rotating bezel 2a ... Click groove 2c ... Stopper surface 3, 13 ... Leaf spring 3a ...・ ・ ・ Elastic part 4 ・ ・ ・ ・ ・ Rotating bezel packing 5 ・ ・ ・ ・ ・ ・ Glass fixing ring 6 ・ ・ ・ ・ ・ ・ Glass 7 ・ ・ ・ ・ ・ ・ Glass packing

Claims (1)

(57) [Scope of utility model registration request] 1. A barrel having a threaded portion formed on an outer peripheral wall thereof, a glass fixing ring screwed and fixed to the threaded portion to hold glass, and a rotary bezel rotatably mounted on the barrel. A rotating bezel packing disposed between the glass fixing ring and the rotating bezel with a tight margin in the radial direction, and a spring having an elastic portion at the end disposed between the barrel and the rotating bezel. it and a member, the rotating bezel has click groove having a stopper surface formed in a direction perpendicular to the rotation direction of the rotating bezel forming
Is, the elastic portion is disposed in the click groove, wherein the tip of the elastic portion abuts on the rotating bezel to said stopper surface is configured cormorants'm not reversed, the click groove from rotating bezel bottom inner peripheral edge The beginning and
The spring member is formed so as not to reach the outer circumference, and the elastic member and the protrusion formed on the inner circumference.
And the hole that is bent downward and is formed on the outer circumference of the body
The foot to be positioned is integrally formed from the same member,
The protrusion is sandwiched between the glass fixing ring and the body.
Rotating bezel apparatus characterized by comprising Te.