JPH0592779U - Rotating bezel device - Google Patents

Abstract

(57) [Summary] [Object] To provide a stable and high-precision rotating bezel device that eliminates radial play of the rotating bezel and eliminates unevenness of the rotating torque. [Structure] A body and a glass fixing ring are screwed and fixed, a packing is provided between the glass fixing ring and a rotating bezel, and an elastic portion is formed between the rotating bezel in which a click groove is formed and the body. A rotating bezel device with a leaf spring attached so that the rotation direction can be regulated. [Effect] It is possible to provide a highly accurate rotary bezel device which has a click feeling and is excellent in operability and has less rattling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary bezel device for a portable watch, and more particularly to a rotary bezel device of stable quality for use in a submersible watch or the like.

[0002]

[Prior Art]

 As shown in FIG. 4, the conventional one-way rotating bezel device is configured to generate a rotating torque and a click feeling only by the elasticity of the leaf spring 13 provided between the rotating bezel 12 and the body 11 in the vertical direction.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned configuration of the conventional technique has a problem that a device with a high sense of precision cannot be obtained because radial play of 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 to eliminate unevenness of the rotating torque, thereby providing a stable and high-precision feeling. A rotating bezel device is provided.

[0004]

[Means for Solving the Problems]

 The rotating bezel device of the present invention comprises 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 rotating bezel rotatably mounted on the barrel. And a rotating bezel packing disposed between the glass fixing ring and the rotating bezel with a radial interference, and an elastic member at an end disposed between the body and the rotating bezel. A spring member having a portion, a click groove having a stopper surface formed in a direction perpendicular to the rotation direction of the rotating bezel is disposed on the side surface of the rotating bezel, and the elastic portion is provided with the click groove. By being arranged in the hook groove, the tip of the elastic portion abuts the stopper surface so that the rotating bezel does not reverse.

[0005]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a body of a portable timer, which is made of stainless steel or titanium, and has a high-strength inorganic glass through a glass packing 7 in an inner diameter step portion 1a. 6 is installed. Reference numeral 5 is a glass fixing ring made of stainless steel or titanium, which is screwed into the neck portion 1c of the body 1 and is firmly fixed to the body 1 by an upper spanner groove 5a.

Reference numeral 2 denotes a rotating bezel having a display plate 8 fixed to it by caulking and is made of stainless steel or titanium.

Reference numeral 2a is a click groove of 60 divisions or 120 divisions provided on the bottom surface of the rotating bezel, and has a rectangular or right-angled triangular cross section, which is perpendicular to the rotation direction (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 moved in the opposite direction. When rotating, the tip of the rotating bezel 2 is engaged with the click groove 2a so that the rotating bezel 2 does not rotate in the reverse direction.

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.

A rotary bezel packing 4 is made of NBR (nitrile butadiene rubber) containing about 10% of DOS (dioctyl sebagate) self-lubricating agent, and is mounted in the inner peripheral groove 2 b of the rotary bezel 2. , And has a tightening margin in the radial direction between the glass fixing ring 5 fixed to the body 1. The crushing ratio in the radial direction is preferably 5 to 25% in order to improve the rotational operability and prevent inadvertent movement such as rattling.

[0012]

[Effect of the device]

 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 and the rotating bezel of the rotating bezel is improved. The rotation selection position is accurate and a high degree of precision can be obtained. In addition, a force was applied to rotate the spring member, which has an elastic portion at its end, in the direction opposite to the rotation direction, into the click groove provided on the side surface of the rotating bezel and having the stopper surface formed in the direction perpendicular to the rotation direction. In this case, since the tip of the elastic part is engaged so as to be scratched by the stopper surface, no action force is generated at the tip of the elastic part to disengage from the click groove. It ensures high safety and reliability.

[0013] 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 that holds the glass is changed by the screw fixing to the case. Since it can be reliably maintained without doing so, it is possible to provide a rotating bezel device that can withstand an increase in the internal pressure of the watch during diving, for example.

Further, in terms of size, the rotary bezel device can be implemented in the same size as the conventional example, and since the number of parts is small, a rotary bezel device which is inexpensive and has a large effect can be obtained.

[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)

[Scope of utility model registration request] 1. A body 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, a rotary bezel rotatably mounted on the body, A rotating bezel packing arranged with a tight margin in the radial direction between the glass fixing ring and the rotating bezel,
A stopper member is provided between the body and the rotating bezel, and a spring member having an elastic portion at an end thereof, and a stopper surface formed on a side surface of the rotating bezel in a direction perpendicular to a rotating direction of the rotating bezel. By disposing the click groove having the shape and the elastic portion being arranged in the click groove, the tip of the elastic portion abuts the stopper surface so that the rotating bezel does not reverse. A rotating bezel device characterized in that