CN117970764A - Rotating device and timepiece - Google Patents

Abstract

The invention provides a rotary device capable of rotating a rotary member in a stable state and realizing miniaturization, and a timepiece including the rotary device. The wristwatch case (1) is provided with a rotary bezel (11) as a rotary member rotatably provided on the outer periphery of the wristwatch case as a device body, and first to third support members (14 to 16) slidably supporting the lower surface of the rotary bezel (11) as a rotary surface orthogonal to the center of the rotary bezel (11) at three points. Therefore, the lower surface of the rotary bezel (11) is slidably supported at three points by the first to third support members (14 to 16), and thus the rotary bezel (11) can be held in a stable state and the rotary bezel (11) can be rotated in a stable state. Further, the first to third support members (14 to 16) support the lower surface of the rotary bezel (11), so that the outer diameter of the entire rotary device (10) can be reduced, and the entire wristwatch can be miniaturized.

Description

Rotating device and timepiece

The application is a divisional application; the application number of the parent case is 202010203758.0, and the application name is a rotating device and a clock.

Technical Field

The present invention relates to a rotary device used in a timepiece such as a wristwatch and a timepiece including the rotary device.

Background

For example, in a wristwatch rotation device, as described in patent document 1, the following structure is known: when the rotary bezel is rotatably disposed on the outer periphery of the wristwatch case, a rotation regulating member is disposed therebetween, the rod-shaped member being bent into a substantially annular shape, and the rotary bezel is rotated in one direction by giving a click feeling to the rotation regulating member.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2002-181960

In this type of rotary device, a saw-tooth-shaped locking tooth is provided on the outer peripheral surface of the wristwatch case, a fixing portion for fixing one end portion of the rotation restriction member is provided on the inner peripheral surface of the rotary bezel, and a notch recess for elastically deforming the other end portion of the rotation restriction member in the radial direction is provided on the inner peripheral surface of the rotary bezel so that the other end portion of the rotation restriction member is locked to the locking tooth of the wristwatch case.

In this way, the rotation device is configured such that the rotation restriction member is attached to the inner peripheral surface of the rotation bezel by fixing one end portion of the rotation restriction member to the fixing portion of the inner peripheral surface of the rotation bezel and disposing the other end portion of the rotation restriction member in the cutout recess of the inner peripheral surface of the rotation bezel, and when the rotation restriction member is attached to the outer peripheral surface of the wristwatch case together with the rotation restriction member in this state, the other end portion of the rotation restriction member is elastically engaged with the engagement teeth of the outer peripheral surface of the wristwatch case.

Disclosure of Invention

Means for solving the problems

The present invention is a rotating device, comprising: a rotation member rotatably provided on the outer periphery of the device main body, the rotation member having engagement recesses arranged in a circumferential direction on a rotation surface orthogonal to the central axis; a limiting member engaged with any one of the engagement recesses to limit the rotation position of the rotation member so as to be able to go out and a support member provided so as to be able to slide with respect to the rotation surface for supporting the rotation member, wherein the opposite surface of the support member, which is in contact with the rotation surface, passes through the engagement recess in accordance with the rotation of the rotation member, and the limiting member is provided at a position different from the support member.

Drawings

Fig. 1 is an enlarged front view showing an embodiment of applying the present invention to a wristwatch.

Fig. 2 is an enlarged sectional view showing a main part of the wristwatch shown in fig. 1 as viewed in the A-A direction.

Fig. 3 is an enlarged sectional view showing a main portion of the wristwatch shown in fig. 1 as seen in the B-B direction.

Fig. 4 is an enlarged perspective view exploded to show a rotation device of the wristwatch shown in fig. 1.

Fig. 5 is an enlarged front view illustrating the watch case shown in fig. 4.

Fig. 6 (a) to (d) show the rotary bezel shown in fig. 4, (a) is an enlarged side view thereof, (b) is an enlarged rear view thereof, (C) is an enlarged view showing a main portion of the rotary bezel shown in (b), and (d) is an enlarged cross-sectional view of a main portion of the rotary bezel shown in (C) seen in the C-C direction.

Fig. 7 (a) and (b) are enlarged cross-sectional views showing the main parts of the first and second rotation regulating members of the rotation device shown in fig. 4, in which (a) is an enlarged cross-sectional view showing the state in which the first and second rotation regulating members are disposed in the first and second receiving hole portions of the wristwatch case, and (b) is an enlarged perspective view showing the respective regulating pieces of the first and second rotation regulating members.

Fig. 8 (a) and (b) are enlarged cross-sectional views showing the main parts of the first to third support members of the rotary device shown in fig. 4, in which (a) is an enlarged cross-sectional view showing the state in which the first to third support members are disposed in the first to third holding hole portions of the wristwatch case, and (b) is an enlarged perspective view showing the support pieces of the first to third support members.

Fig. 9 is an enlarged cross-sectional view showing a main portion of the rotary device shown in fig. 2 in a state in which the first rotation restriction member is engaged with the engagement recess of the rotary bezel and the second rotation restriction member is disengaged from the engagement recess of the rotary bezel, in a D-D view.

Fig. 10 is an enlarged cross-sectional view showing a main portion of the rotary device shown in fig. 9 in a state in which the rotary bezel rotates, the first rotation restriction member is disengaged from the engagement recess of the rotary bezel, and the second rotation restriction member is engaged with the engagement recess of the rotary bezel.

Fig. 11 is an enlarged cross-sectional view showing a main portion of a state in which the first to third support members support the rotary bezel in an E-E downward view of the rotary device shown in fig. 3.

Detailed Description

An embodiment of the present invention applied to a wristwatch will be described below with reference to fig. 1 to 11.

As shown in fig. 1, the wristwatch includes a metal wristwatch case 1 as a device body. The wristwatch case 1 is provided with a band attachment portion 2 at each of 12 and 6 side portions. The push-button switches 3 are provided on the 2-point side, the 4-point side, and the 8-point side of the wristwatch case 1, respectively.

As shown in fig. 1 to 4, a watch glass 4 is provided in an upper opening of the watch case 1 via a glass seal 4 a. A rear cover 5 is attached to the lower portion of the wristwatch case 1 via a waterproof ring 5 a. A timepiece module 6 is provided in the wristwatch case 1 via a middle frame 7.

In this case, a dial (not shown) is provided on the upper portion of the timepiece module 6, and a separation member 8 is disposed on the outer periphery of the dial as shown in fig. 2 and 3. Although not shown, the timepiece module 6 includes a timepiece movement in which a pointer is moved above a dial, a display panel for displaying information such as time and the like in an electro-optical manner, and various devices required for timepiece functions such as a circuit portion for electrically driving the above-described components.

However, as shown in fig. 1 to 4, a rotation device 10 is provided on the outer periphery of the upper portion of the wristwatch case 1 as the device main body. In this case, the notch 9 is provided on the entire periphery of the upper portion of the wristwatch case 1. The rotary device 10 includes a rotary bezel 11 as a rotary member disposed in the cutout 9 of the wristwatch case 1, first and second rotation regulating members 12 and 13 for regulating the rotation position of the rotary bezel 11, and first to third support members 14 to 16 for supporting the rotary bezel 11.

As shown in fig. 1 to 4, the rotary bezel 11 is formed in a ring shape from a metal such as titanium or stainless steel or a hard synthetic resin. The rotary bezel 11 is rotatably attached to the outer peripheral cutout 9 via an annular seal 17, and the outer peripheral cutout 9 is located at the upper portion of the wristwatch case 1.

That is, as shown in fig. 2 and 3, an attachment recess 11a for attaching the seal 17 is provided in the inner peripheral surface of the rotary bezel 11. An engagement portion 11b that engages with an engagement protrusion 9a provided on the inner peripheral surface of the cutout portion 9 of the wristwatch case 1 is provided on the inner peripheral surface of the rotary bezel 11 located below the fitting recess portion 11a.

Therefore, as shown in fig. 2 and 3, the rotary bezel 11 is configured such that the seal 17 is fitted into the fitting recess 11a, and is fitted into the notch 9 located on the outer periphery of the upper portion of the wristwatch case 1 from above, and the engagement portion 11b is engaged with the engagement protrusion 9a of the notch 9 of the wristwatch case 1. Thus, the rotary bezel 11 is rotatably attached to the cutout 9 in the upper outer periphery of the wristwatch case 1 without coming out above the wristwatch case 1.

As shown in fig. 2 to 4 and 6, a plurality of (for example, 60) engaging recesses 18 are provided on the lower surface of the rotary bezel 11, that is, the lower surface of the rotary surface orthogonal to the central axis of the rotary bezel 11 at equal intervals along the circumference. The plurality of engaging recesses 18 each have a substantially trapezoidal cross section.

That is, as shown in fig. 6b to 6d, the engagement concave portion 18 is configured such that a first inclined portion 18a is provided on an inner surface located on the opposite side of one direction (arrow X direction) of the rotation direction of the rotary bezel 11, and a second inclined portion 18b is provided on an inner surface located on the one direction of the rotation direction of the rotary bezel 11, and a bottom portion 18c is provided between the first inclined portion 18a and the second inclined portion 18 b.

In this case, as shown in fig. 6 (d), the first inclined portion 18a is provided to be inclined at an angle of about 40 ° from the lower surface of the rotary bezel 11 toward one direction (arrow X direction) of the rotational direction thereof. Thus, the first inclined portion 18a is configured such that when the rotary bezel 11 rotates in one direction, the below-described restricting pieces 20 of the first and second rotation restricting members 12, 13 slide in contact with each other, thereby depressing the restricting pieces 20 of the first and second rotation restricting members 12, 13.

As shown in fig. 6d, the second inclined portion 18b is inclined at an angle of about 70 ° from the lower surface of the rotary bezel 11 toward the direction opposite to the one direction (arrow X direction) of the rotation direction thereof. Thus, the second inclined portion 18b is configured such that when the first and second rotation restriction members 12, 13 are alternately inserted into the engagement recess 18, the respective restriction pieces 20 of the first and second rotation restriction members 12, 13 abut against each other in a manner capable of being brought into contact with or separated from each other, thereby restricting the rotation of the rotary bezel 11 in the direction opposite to the one direction.

As shown in fig. 2 and 7, the first and second rotation restricting members 12 and 13 each include: a regulating piece 20 for regulating the rotation of the rotary bezel 11; and a regulating spring 21 as a coil spring for biasing the regulating piece 20 in a direction of being pressed against the lower surface of the rotation surface as the rotation bezel 11. The restricting sheet 20 includes: a protrusion 22 that can be inserted into any one of a plurality of engaging recesses 18 provided on the lower surface of the rotary bezel 11; a pedestal portion 23 provided with the protruding portion 22 on the upper surface; and a guide shaft 24 provided on the lower surface of the pedestal 23 and guiding the restricting spring 21, the members being integrally formed of a hard synthetic resin having slidability.

In this case, as shown in fig. 2, 5 and 7, the first and second rotation restricting members 12 and 13 are respectively disposed in the first and second receiving hole portions 25 and 26 provided at predetermined portions of the bottom surface of the cutout portion 9 of the wristwatch case 1. The first receiving hole 25 of the first and second receiving holes 25 and 26 is provided at a position avoiding the push button switch 3, for example, at a position located at the 7-point side, on the bottom surface of the cutout 9 of the wristwatch case 1. Similarly, the second accommodation hole 26 is provided at a position located at, for example, 11 points.

That is, as shown in fig. 2, 5 and 7, the first and second housing hole portions 25 and 26 each include: a large-diameter hole portion 27 provided at a portion located on the upper side in the up-down direction thereof and provided with each of the pedestal portions 23 of the first and second rotation restricting members 12, 13 so as to be movable in the up-down direction; and a small diameter hole 28 provided at a lower portion side and provided with the guide shafts 24 of the first and second rotation regulating members 12, 13 and the regulating spring 21.

As shown in fig. 2, 5, and 7, the large-diameter hole 27 has a slightly larger outer shape than the outer shape of the pedestal 23, and is formed in a non-circular shape such as a substantially elliptical shape similar to the pedestal 23. Thus, the first and second rotation restricting members 12 and 13 are configured not to rotate in the first and second receiving hole portions 25 and 26 centering on the guide shafts 24.

As shown in fig. 2, 5 and 7, the small diameter hole 28 is formed in a circular shape slightly larger than the outer diameter of the regulating spring 21 and smaller than the outer diameter of the pedestal 23. Therefore, when the regulating spring 21 is accommodated in the small-diameter hole 28 together with the guide shaft 24, the upper end portion of the regulating spring 21 is elastically in contact with the lower surface of the pedestal portion 23, and the lower end portion is elastically in contact with the bottom of the small-diameter hole 28.

As a result, as shown in fig. 7, the regulating spring 21 is configured to bias the pedestal 23 in a direction of pushing out the pedestal upward of the first and second housing hole portions 25, 26. In this case, the elastic force of the restriction spring 21 is set to the following degree: when the protruding portion 22 is pushed out toward the upper sides of the first and second receiving hole portions 25, 26 by the elastic force thereof, the lower portion side of the base portion 23 is maintained in the large diameter hole portions 27 of the first and second receiving hole portions 25, 26 even if the upper portion side of the base portion 23 protrudes to the upper sides of the first and second receiving hole portions 25, 26.

On the other hand, as shown in fig. 2 and 7, the protrusion 22 of each of the restricting pieces 20 of the first and second rotation restricting members 12, 13 is formed in a mountain-like shape that can be inserted into the engaging recess 18 of the rotary bezel 11. That is, the protrusion 22 includes a sliding portion 22a that is pressed down in accordance with the sliding of the first inclined portion 18a in the engagement recess 18 of the rotary bezel 11, and an abutting portion 22b that abuts against the second inclined portion 18b of the engagement recess 18 so as to be able to contact or separate.

In this case, as shown in fig. 2 and 7, the height of the mountain-like shape of the protruding portion 22, that is, the length protruding from the pedestal portion 23 toward the rotary bezel 11 is formed to be substantially the same as or slightly longer than the depth of the engaging recess 18 of the rotary bezel 11. Thus, the protruding portion 22 is configured such that, when inserted into the engagement recess 18, the mountain-shaped upper end portion 22c abuts against the bottom portion 18c of the engagement recess 18.

In this case, as shown in fig. 2 and 7, the sliding portion 22a is formed substantially parallel to the first inclined portion 18a of the engagement recess 18 of the rotary bezel 11. The contact portion 22b is formed substantially parallel to the second inclined portion 18b of the engagement recess 18. The upper end 22c of the protrusion 22, that is, the upper end 22c of the mountain shape is arcuate.

As a result, as shown in fig. 2 and 7, when the engagement recess 18 of the rotary bezel 11 is inserted and the mountain-shaped upper end 22c is brought into contact with the bottom 18c of the engagement recess 18, the sliding portion 22a faces the first inclined portion 18a of the engagement recess 18 with a gap therebetween, and the contact portion 22b comes into contact with the second inclined portion 18b of the engagement recess 18.

In this case, as shown in fig. 7, the outer shape of each of the seating portions 23 of the first and second rotation restriction members 12, 13 is substantially non-circular such as elliptical, and is configured so as not to rotate in the first and second accommodation hole portions 25, 26 about the guide shafts 24 when inserted into the large-diameter hole portions 27 of the first and second accommodation hole portions 25, 26.

As shown in fig. 2 and 7, the pedestal portion 23 is disposed below the rotary bezel 11 so that a slight gap exists between the upper surface of the pedestal portion 23 and the lower surface of the rotary bezel 11 when the protrusion portion 22 is inserted into the engagement recess 18 of the rotary bezel 11, and the upper surface of the pedestal portion 23 is disposed on substantially the same plane as the bottom surface of the cutout portion 9 of the wristwatch case 1 at the upper end portions of the first and second receiving hole portions 25 and 26.

In addition, in a state in which the protruding portion 22 is inserted into the engagement recess 18 of the rotary bezel 11 as shown in fig. 2 and 7, when the rotary bezel 11 is rotated in one direction (the arrow X direction) as shown in fig. 6 (d), the first inclined portion 18a of the engagement recess 18 slides in contact with the sliding portion 22a, whereby the sliding portion 22a is gradually depressed against the elastic force of the restricting spring 21.

As shown in fig. 2 and 7, when the slide portion 22a is gradually depressed against the elastic force of the restricting spring 21, the abutment portion 22b gradually separates from the second inclined portion 18b of the engagement recess 18, and the upper end portion 22c of the mountain shape is thereby separated downward from the inside of the engagement recess 18 beyond the first inclined portion 18a of the engagement recess 18.

In this case, as shown in fig. 2 and 7, the regulating spring 21 is configured to be compressed by the pedestal 23 when the upper end 22c of the protrusion 22 passes over the second inclined portion 18b of the engagement recess 18, thereby increasing the rotational force of the rotary bezel 11, and to be expanded by the compressed regulating spring 21 when the protrusion 22 is inserted into the adjacent engagement recess 18, thereby rapidly decreasing the rotational force of the rotary bezel 11, thereby imparting a click feeling to the rotary bezel 11.

In addition, as shown in fig. 2 and 7, when the rotary bezel 11 is rotated in a direction opposite to one direction (the arrow X direction) as shown in fig. 6 (d) in a state of being inserted into the engagement concave portion 18 of the rotary bezel 11, the contact portion 22b is maintained in contact with the second inclined portion 18b of the engagement concave portion 18, and the rotary bezel 11 is prevented from rotating in the opposite direction.

However, the first and second rotation restricting members 12 and 13 are configured to be capable of engaging with any one of the plurality of engaging recesses 18 provided in the rotary bezel 11 in a state of being out of phase, as shown in fig. 9 and 10, to restrict the rotational position of the rotary bezel 11. That is, when the regulating piece 20 of the first rotation regulating member 12 engages with any one of the plurality of engaging recesses 18, the regulating piece 20 of the second rotation regulating member 13 is disengaged from the engaging recess 18 without engaging with any one of the plurality of engaging recesses 18.

As shown in fig. 9 and 10, the regulating piece 20 of the first rotation regulating member 12 and the regulating piece 20 of the second rotation regulating member 13 are configured such that, when the regulating piece is disengaged from the engagement concave portion 18 of the rotary bezel 11, the upper end portion 22c of the protruding portion 22 of the regulating piece 20 abuts on the flat surface portion between the plurality of engagement concave portions 18 located on the lower surface of the rotary bezel 11. Thus, the rotary bezel 11 is configured to be rotated stably to improve operability.

In this case, as shown in fig. 9 and 10, 60 engaging recesses 18 are provided at equal intervals in the circumferential direction on the lower surface of the rotation surface of the rotary bezel 11, and when the opening angle, which is the interval between the adjacent engaging recesses 18, is 6 °, the first and second rotation regulating members 12, 13 are arranged with a phase difference of an angle of 3 ° which is an opening angle obtained by bisecting the opening angle.

As a result, as shown in fig. 6 (b), even if the rotation bezel 11 is equally divided into the plurality of engagement recesses 18 in the circumferential direction 60, the respective restriction pieces 20 of the first and second rotation restriction members 12, 13 alternately engage with the engagement recesses 18 every 3 ° of rotation of the rotation bezel 11, thereby restricting the rotation position of the rotation bezel 11.

Therefore, as shown in fig. 6 (b), the rotary bezel 11 is configured such that even if 60 engagement recesses 18 are divided in the circumferential direction 60, the position of each of the restriction pieces 20 of the first and second rotation restriction members 12, 13 is restricted 120 times every one rotation of the rotary bezel 11. Thus, the first and second rotation restricting members 12 and 13 are configured to finely restrict the rotation angle of the rotary bezel 11 without increasing the number of the arrangement of the engaging concave portions 18.

In this case, the number of the engaging recesses 18 is limited by the material of the rotary bezel 11. For example, in the case where the rotary bezel 11 is made of stainless steel having high rigidity, even if 120 engaging recesses 18 are arranged, abrasion of the engaging recesses 18 is small, and thus 120-time position restrictions can be performed by one rotation restriction member every time the rotary bezel 11 is rotated one turn. In contrast, when the rotary bezel 11 is formed of titanium or a hard synthetic resin having lower rigidity than stainless steel, the arrangement of 60 engaging recesses 18 is limited because the arrangement of 120 engaging recesses 18 causes a large wear.

Therefore, in this embodiment, even if the rotary bezel 11 is formed of a material such as titanium having a lower rigidity than stainless steel, and 60 engaging recesses 18 are arranged, by providing the first and second rotation regulating members 12, 13, the rotation position of the rotary bezel 11 can be regulated 120 times per one rotation by using the phase difference between the respective regulating pieces 20 of the first and second rotation regulating members 12, 13, as in the case where the rotary bezel 11 is formed of stainless steel and the rotation position is regulated by one rotation regulating member.

On the other hand, the first to third support members 14 to 16 are configured to slidably support the lower surface of the rotary bezel 11, which is a rotation surface orthogonal to the central axis of the rotary bezel 11, at three points as shown in fig. 3, 4, 8, and 11. That is, the first to third support members 14 to 16 each include a support piece 30 that elastically contacts and supports the lower surface of the rotation surface of the rotary bezel 11, and a support spring 31 that is a coil spring that biases the support piece 30 in a direction of pressing the support piece against the lower surface of the rotation surface of the rotary bezel 11.

As shown in fig. 3 and 8, each of the support pieces 30 of the first to third support members 14 to 16 includes a support head portion 32 that elastically contacts and slides against the lower surface of the rotary bezel 11, and a guide shaft 33 that is provided on the lower surface of the support head portion 32 and guides the support spring 31, and the support pieces are integrally formed of a hard synthetic resin having slidability.

As shown in fig. 3 to 5 and 8, the first to third support members 14 to 16 are disposed in first to third holding hole portions 34 to 36 provided at predetermined portions of the bottom surface of the cutout portion 9 of the wristwatch case 1. The first holding hole 34 of the first to third holding hole 34 to 36 is provided at a portion of the bottom surface of the notch 9 of the wristwatch case 1, for example, at a portion located on the 1-point side, which is located away from the push button switch 3.

Similarly, as shown in fig. 5, the second holding hole 35 is provided at a portion avoiding the push button switch 3, for example, at a portion on the 5-point side, on the bottom surface of the cutout 9 of the wristwatch case 1. The third holding hole 36 is provided at a portion avoiding the push button switch 3, for example, at a portion located on the 9-point side, on the bottom surface of the cutout 9 of the wristwatch case 1.

That is, as shown in fig. 3, 5 and 8, the first to third holding hole portions 34 to 36 each include: a large-diameter hole 37 provided at a portion located at an upper side in the up-down direction thereof, and in which the support heads 32 of the first to third support members 14 to 16 are disposed so as to be movable in the up-down direction; and a small diameter hole 38 provided at a lower portion side and provided with the guide shafts 33 of the first to third support members 14 to 16 and the support springs 31.

As shown in fig. 3, 5 and 8, the large diameter hole 37 is formed in a circular shape having an outer diameter slightly larger than the outer diameter of the support head 32. The small-diameter hole 38 is formed in a circular shape slightly larger than the outer diameter of the support spring 31 and smaller than the outer diameter of the support head 32. Therefore, when the support spring 31 is accommodated in the small-diameter hole 38 together with the guide shaft 33, the upper end portion of the support spring 31 is elastically contacted with the lower surface of the support head 32, and the lower end portion is elastically contacted with the bottom of the small-diameter hole 38.

As a result, as shown in fig. 8 and 11, the support spring 31 is configured to bias the support head 32 in a direction of pushing out the support head toward the upper sides of the first to third holding hole portions 34 to 36, respectively. In this case, the elastic force of the support spring 31 is set to the following degree: when the support head 32 is pushed out toward the upper side of the first to third holding hole portions 34 to 36 by the elastic force thereof, even if the upper side of the support head 32 protrudes to the upper side of the first to third holding hole portions 34 to 36, the lower side of the support head 32 is maintained in a state of being disposed in the large diameter hole portions 37 of the first to third holding hole portions 34 to 36.

As shown in fig. 3, 8 and 11, the support head 32 of each of the support pieces 30 of the first to third support members 14 to 16 is formed in a columnar shape having an outer diameter larger than the opening surface of the engagement recess 18 of the rotary bezel 11, that is, larger than either the radial length or the circumferential length of the engagement recess 18. That is, the support head 32 is formed such that an upper end surface, which is an opposing surface opposing the lower surface of the rotary bezel 11, is larger than any one of the radial length and the circumferential length of the opening surface of the engagement recess 18.

In this case, as shown in fig. 3, 8 and 11, the upper end surface of the support head 32, which is the facing surface facing the lower surface of the rotary bezel 11, is formed as an arc surface 32a having a large radius of curvature. Thus, the support head 32 is configured so as not to fall into the engagement recess 18, and the arcuate surface 32a of the upper end portion elastically contacts and slides in a point contact state with the lower surface that is the rotation surface of the rotary bezel 11.

That is, each of the support heads 32 of the first to third support members 14 to 16 is configured such that, as shown in fig. 3, 8 and 11, when the arcuate surface 32a corresponds to the engagement recess 18, the arcuate surface 32a contacts the edge of the opening of the engagement recess 18 at two points, and when the arcuate surface 32a does not correspond to the engagement recess 18 but is separated from the engagement recess 18, the arcuate surface 32a contacts the lower surface of the rotary bezel 11 at one point.

However, as shown in fig. 5, the first to third support members 14 to 16 are disposed in the wristwatch case 1 at the opening angles described above, respectively, which are larger than 90 °. That is, the first support member 14 and the second support member 15 are arranged at an angle slightly larger than 90 ° in terms of opening angle, for example, in the range of 95 ° to 100 °. The second support member 15 and the third support member 16 are arranged with their opening angles of about 130 °. Also, the first support member 14 and the third support member 16 are arranged with their opening angles being about 130 °.

As a result, the first to third support members 14 to 16 are configured to support the rotary bezel 11 in a stable state by supporting the rotary bezel 11 at three points located at each corner of the substantially isosceles triangle connecting the 1-point side, the 5-point side, and the 9-point side, and to prevent the vertical shake of the rotary bezel 11 even if the first and second rotation restricting members 12 and 13 alternately engage with the engagement concave portions 18 with rotation of the rotary bezel 11, thereby stabilizing the rotation of the rotary bezel 11, as shown in fig. 5.

Next, the operation of the rotation device 10 of the wristwatch will be described.

In assembling the rotation device 10, first, the first and second rotation restricting members 12 and 13 are disposed in the first and second receiving hole portions 25 and 26 provided at the bottom of the cutout portion 9 located on the upper outer periphery of the wristwatch case 1. At this time, the first rotation restriction member 12 is disposed in the first receiving hole portion 25 provided at the 7-point side of the wristwatch case 1, and the second rotation restriction member 13 is disposed in the second receiving hole portion 26 provided at the 11-point side of the wristwatch case 1.

That is, when the first and second rotation regulating members 12 and 13 are disposed in the first and second receiving hole portions 25 and 26 provided in the wristwatch case 1, first, the guide shafts 24 provided on the lower surfaces of the mount portions 23 of the respective regulating pieces 20 of the first and second rotation regulating members 12 and 13 are inserted into the regulating springs 21, respectively, and the regulating springs 21 are disposed on the outer peripheries of the guide shafts 24, respectively.

In this state, the regulating spring 21 and the guide shaft 24 are inserted into the first and second receiving holes 25 and 26 of the wristwatch case 1 from above, and are disposed in the small-diameter holes 28 of the first and second receiving holes 25 and 26, respectively. In this state, as shown in fig. 7 (a), the lower end portion of the restricting spring 21 is elastically contacted with the respective bottoms of the first and second receiving hole portions 25 and 26, and the upper end portion of the restricting spring 21 is elastically contacted with the lower surface of the base portion 23, whereby the restricting spring 21 is naturally extended.

In this state, the upper side of the base portion 23 protrudes upward from the first and second receiving hole portions 25 and 26 together with the protrusion portion 22, and the lower side of the base portion 23 is disposed in the large-diameter hole portions 27 of the first and second receiving hole portions 25 and 26, respectively. Therefore, even if the respective protruding portions 22 of the first and second rotation restriction members 12, 13 protrude above the first and second receiving hole portions 25, 26, respectively, the lower portion side of the pedestal portion 23 is disposed in the first and second receiving hole portions 25, 26, and thus is disposed in the first and second receiving hole portions 25, 26 in a stable state.

In this case, the outer shape of the pedestal portion 23 is substantially a non-circular shape such as an ellipse, and the inner shapes of the first and second accommodation hole portions 25, 26 are the same as the pedestal portion 23, whereby the pedestal portion 23 is not disposed in the large diameter hole portions 27 of the first and second accommodation hole portions 25, 26 so as to rotate about the guide shafts 24. Therefore, the first and second rotation regulating members 12 and 13 are arranged such that the regulating pieces 20 do not rotate in the first and second receiving hole portions 25 and 26.

At this time, the first to third support members 14 to 16 are disposed in the first to third holding hole portions 34 to 36 provided at the bottom of the cutout portion 9 located at the upper outer periphery of the wristwatch case 1, respectively. At this time, the first support member 14 is disposed in the first holding hole portion 34 provided on the 1-point side of the wristwatch case 1, the second support member 15 is disposed in the second holding hole portion 35 provided on the 5-point side of the wristwatch case 1, and the third support member 16 is disposed in the third holding hole portion 36 provided on the 9-point side of the wristwatch case 1.

That is, when the first to third support members 14 to 16 are disposed in the first to third holding hole portions 34 to 36 provided in the wristwatch case 1, first, the guide shafts 33 provided on the lower surfaces of the support heads 32 of the support plates 30 of the first to third support members 14 to 16 are inserted into the support springs 31, respectively, and the support springs 31 are disposed on the outer peripheries of the guide shafts 33, respectively.

In this state, the support spring 31 and the guide shaft 33 are inserted into the first to third holding hole portions 34 to 36 of the wristwatch case 1 from above, and are disposed in the small-diameter hole portions 38 of the first to third holding hole portions 34 to 36, respectively. In this state, as shown in fig. 8 (a), the support spring 31 is naturally extended in a state where the lower end portion of the support spring 31 is elastically contacted with the bottom portions of the first to third holding hole portions 34 to 36 and the upper end portion of the support spring 31 is elastically contacted with the lower surface of the support head portion 32.

In this state, the upper side of the support head 32 protrudes upward from the first to third holding hole portions 34 to 36, and the lower side of the support head 32 is disposed in each of the large-diameter hole portions 37 of the first to third holding hole portions 34 to 36. Therefore, even if the support head portions 32 of the first to third support members 14 to 16 protrude above the first to third holding hole portions 34 to 36, respectively, the lower portion side of the support head portion 32 is disposed in the first to third holding hole portions 34 to 36, and thus is disposed in the first to third holding hole portions 34 to 36 in a stable state.

In this state, the rotary bezel 11 is attached to the upper outer periphery of the wristwatch case 1. At this time, the seal 17 is previously fitted into the fitting recess 11a provided in the inner peripheral surface of the rotary bezel 11. The rotary bezel 11 is fitted into the notch 9 of the wristwatch case 1 from above, and the engaging portion 11b of the rotary bezel 11 is engaged with the engaging protrusion 9a of the notch 9 of the wristwatch case 1.

Thus, the rotary bezel 11 is not pulled out upward of the wristwatch case 1, and is rotatably attached to the outer periphery of the wristwatch case 1 by the cutout 9. At this time, each of the regulating pieces 20 of the first and second rotation regulating members 12, 13 is pressed down by the lower surface that is the rotation surface of the rotary bezel 11, and each of the supporting pieces 30 of the first to third supporting members 14 to 16 is pressed down by the lower surface that is the rotation surface of the rotary bezel 11.

In this case, when the regulating pieces 20 of the first and second rotation regulating members 12 and 13 are pressed down by the lower surface of the rotary bezel 11, the regulating springs 21 of the first and second rotation regulating members 12 and 13 are slightly compressed, and the upper portions of the respective seating portions 23 are pressed into the large diameter hole portions 27 of the first and second housing hole portions 25 and 26, respectively.

At this time, of the regulating pieces 20 of the first and second rotation regulating members 12 and 13, the projection 22 of one regulating piece 20 is inserted into the engagement recess 18 provided on the lower surface of the rotary bezel 11, and the projection 22 of the other regulating piece 20 is pressed against the lower surface of the rotary bezel 11 without being inserted into the engagement recess 18.

In this way, when the protrusion 22 of the regulating piece 20 is inserted into the engagement recess 18 provided on the lower surface of the rotary bezel 11, the sliding portion 22a of the protrusion 22 faces the first inclined portion 18a of the engagement recess 18 in a parallel state with a gap therebetween, the abutting portion 22b of the protrusion 22 faces the second inclined portion 18b of the engagement recess 18 in a parallel state, and the upper end portion 22c of the protrusion 22 abuts the bottom portion 18c of the engagement recess 18.

At this time, the height of the protrusion 22 of the regulating piece 20, that is, the length of the protrusion 22 protruding from the pedestal portion 23 toward the rotary bezel 11 is formed to be substantially the same as or slightly longer than the depth of the engaging recess 18 of the rotary bezel 11. Therefore, when the protruding portion 22 is inserted into the engagement recess 18 and the upper end portion 22c thereof abuts against the bottom portion 18c of the engagement recess 18, the pedestal portion 23 is pressed into the first and second receiving hole portions 25, 26 of the wristwatch case 1.

In this state, the respective mount portions 23 of the first and second rotation restricting members 12, 13 are disposed on the lower side of the rotary bezel 11 with a slight gap between the upper surfaces thereof and the lower surface of the rotary bezel 11, and the upper surfaces of the mount portions 23 are disposed on substantially the same plane as the bottom surface of the wristwatch case 1 located at the upper end portions of the first and second receiving hole portions 25, 26. Thus, the base portions 23 of the first and second rotation restriction members 12 and 13 are arranged so as not to contact the lower surface of the rotary bezel 11.

At this time, the support springs 31 of the first to third support members 14 to 16 are slightly compressed, and the arc surface of the upper end of each support head 32 is pressed against the lower surface of the rotary bezel 11. That is, at this time, the support head 32 of any one of the support pieces 30 of the first to third support members 14 to 16 corresponds to the engagement recess 18 provided on the lower surface of the rotary bezel 11, and the support head 32 of the other support piece 30 is pressed against the lower surface of the rotary bezel 11 without corresponding to the engagement recess 18.

In this way, when the support head 32 of the support piece 30 corresponds to the engagement recess 18 provided on the lower surface of the rotary bezel 11, the upper end portion of the support head 32 is an arc surface 32a having a large radius of curvature, and therefore the arc surface is in contact with the edge portion of the opening of the engagement recess 18 at two points, whereby the support head 32 is pushed into the first to third holding hole portions 34 to 36 of the wristwatch case 1.

When the support head 32 of the support piece 30 is separated from the engagement recess 18 without being in correspondence with the engagement recess 18 of the rotary bezel 11, the arcuate surface 32a of the upper end portion of the support head 32 is in contact with the lower surface of the rotary bezel 11 at a point, whereby the support head 32 is pressed into the first to third holding hole portions 34 to 36 of the wristwatch case 1.

In this state, each of the support pieces 30 of the first to third support members 14 to 16 supports the lower surface of the rotary bezel 11 at three points. That is, as shown in fig. 5, the first to third support members 14 to 16 support the rotary bezel 11 at three points located at the corners of the substantially isosceles triangle connecting the 1-point side, the 5-point side, and the 9-point side. Therefore, the rotary bezel 11 is supported by the first to third support members 14 to 16 in a stable state, and the vertical shake of the rotary bezel 11 is prevented.

Next, the operation of the rotating device 10 will be described.

In this case, for example, the protrusion 22 of the regulating piece 20 of the first rotation regulating member 12 is inserted into the engagement recess 18 provided on the lower surface of the rotary bezel 11, and the protrusion 22 of the regulating piece 20 of the second rotation regulating member 13 is abutted against the lower surface of the rotary bezel 11 without corresponding to the engagement recess 18, among the regulating pieces 20 of the first and second rotation regulating members 12, 13, and the rotary bezel 11 is rotatably supported by the first to third support members 14 to 15.

In this state, when the rotary bezel 11 is rotated in one direction (arrow X direction), the engagement recess 18 of the rotary bezel 11 moves in the rotation direction (arrow X direction) in accordance with the rotation of the rotary bezel 11. At this time, as shown in fig. 9, the first inclined portion 18a of the engagement concave portion 18 slides in a state of being in contact with the sliding portion 22a of the protrusion 22 in the regulating piece 20 of the first rotation regulating member 12 inserted into the engagement concave portion 18, and the sliding portion 22a is gradually pressed down against the elastic force of the regulating spring 21 according to the sliding of the first inclined portion 18 a.

Therefore, as shown in fig. 9, the abutment portion 22b of the protrusion 22 in the regulating piece 20 of the first rotation regulating member 12 gradually separates from the second inclined portion 18b of the engagement recess 18, and the upper end portion 22c of the protrusion 22 is pushed out to the lower portion side of the engagement recess 18 beyond the first inclined portion 18 a. At this time, the regulating spring 21 is compressed by the pedestal portion 23, and thus the rotational force of the rotary bezel 11 becomes heavy.

In this state, when the rotary bezel 11 is rotated further in one direction (arrow X direction), the rotary bezel 11 rotates in a state where the upper end 22c of the protrusion 22 in the regulating piece 20 of the first rotation regulating member 12 is in elastic contact with the lower surface of the rotary bezel 11 and the upper end 22c of the protrusion 22 in the regulating piece 20 of the second rotation regulating member 13 is in elastic contact with the lower surface of the rotary bezel 11.

When the rotary bezel 11 rotates by 3 °, as shown in fig. 10, the protrusion 22 of the regulating piece 20 of the second rotation regulating member 13 of each of the regulating pieces 20 of the first and second rotation regulating members 12 and 13, which does not correspond to the engaging recess 18, is brought into contact with the lower surface of the rotary bezel 11, and corresponds to the engaging recess 18. In this way, the protrusion 22 of the regulating piece 20 of the second rotation regulating member 13 is inserted into the engagement recess 18.

At this time, as shown in fig. 10, the upper end 22c of the protrusion 22 of the restricting piece 20 is pushed up sharply along the second inclined portion 18b of the engaging concave portion 18 by the elastic force of the restricting spring 21 after compression of the second rotation restricting member 13. Thus, the sliding portion 22a of the protruding portion 22 of the second rotation restriction member 13 faces the first inclined portion 18a of the engagement recess 18, the abutting portion 22b of the protruding portion 22 faces the second inclined portion 18b of the engagement recess 18, and the upper end portion 22c of the protruding portion 22 abuts the bottom portion 18c of the engagement recess 18.

In this way, when the protrusion 22 of the regulating piece 20 of the second rotation regulating member 13 is inserted into the engagement recess 18, the regulating spring 21 after compression of the second rotation regulating member 13 expands due to its elastic restoring force, and thus the rotation force of the rotary bezel 11 is suddenly reduced. Therefore, a clicking feel is given to the rotary bezel 11, and the rotational position of the rotary bezel 11 is restricted.

Thus, each of the restricting pieces 20 of the first and second rotation restricting members 12, 13 alternately engages with the engaging recess 18 of the rotary bezel 11 every 3 ° of rotation of the rotary bezel 11, thereby restricting the position of the rotary bezel 11 every 3 ° of rotation. That is, even if the number of the engaging recesses 18 of the rotary bezel 11 is 60, the first and second rotation regulating members 12 and 13 can regulate the positions of the rotary bezel 11 120 times while the rotary bezel 11 rotates one turn.

In this way, in the rotary bezel 11, when the rotary bezel 11 is rotated in the direction opposite to the one direction (the arrow X direction) in a state where the protrusion 22 of the regulating piece 20 of either one of the first and second rotation regulating members 12, 13 is inserted into the engagement recess 18, the second inclined portion 18b of the engagement recess 18 is brought into contact with the contact portion 22b of the protrusion 22, thereby preventing the rotary bezel 11 from rotating reversely. Therefore, the rotary bezel 11 rotates only in one direction (arrow X direction).

In this way, when the rotary bezel 11 rotates, the rotary bezel 11 is supported at three points by the first to third support members 14 to 16, and the rotary bezel 11 is supported in a stable state by the first to third support members 14 to 16. Therefore, the first and second rotation restriction members 12 and 13 are prevented from being moved in the vertical direction of the rotary bezel 11 when they are engaged with and disengaged from the engagement concave portion 18 of the rotary bezel 11.

As described above, according to the rotary device 10 of the wristwatch, the rotary bezel 11 as the rotary member and the first to third support members 14 to 16 are provided, the rotary bezel 11 being rotatably provided on the outer periphery of the wristwatch case 1 as the device body, and the first to third support members 14 to 16 slidably support the lower surface of the rotary bezel 11 as the rotation surface orthogonal to the central axis of the rotary bezel 11 at three points, whereby the rotary bezel 11 can be rotated in a stable state, and the wristwatch case 1 can be miniaturized.

That is, in the rotary device 10 of the wristwatch, since the lower surface of the rotary bezel 11 is slidably supported at three points by the first to third support members 14 to 16, the rotary bezel 11 can be held in a stable state, and the rotary bezel 11 can be rotated in a stable state, and since the first to third support members 14 to 16 support the lower surface of the rotary bezel 11, the outer diameter of the entire rotary device 10 does not become large, and thus the entire wristwatch can be miniaturized.

In the rotary device 10 of the wristwatch, the first and second rotation regulating members 12 and 13 are provided to be capable of engaging with and disengaging from any one of the plurality of engagement recesses 18 to regulate the rotation position of the rotary bezel 11, and the plurality of engagement recesses 18 are provided at equal intervals in the circumferential direction on the lower surface as the rotation surface of the rotary bezel 11, whereby the rotation position of the rotary bezel 11 held in a stable state by the first to third support members 14 to 16 can be regulated more reliably and favorably by the first and second rotation regulating members 12 and 13.

That is, the first and second rotation restriction members 12 and 13 are each provided with a restriction piece 20 that can be engaged with any one of the plurality of engagement recesses 18 provided on the lower surface of the rotation bezel 11 to restrict the rotation of the rotation bezel 11, and a restriction spring 21 that is a coil spring that urges the restriction piece 20 in a direction of being pressed against the lower surface of the rotation bezel 11, whereby the respective restriction pieces 20 of the first and second rotation restriction members 12 and 13 can be reliably and satisfactorily engaged with any one of the plurality of engagement recesses 18 by the elastic force of the restriction spring 21 in accordance with the rotation of the rotation bezel 11.

In this case, the first and second rotation regulating members 12 and 13 are arranged with a phase difference of an angle obtained by bisecting the opening angle, which is a distance between the adjacent engaging concave portions 18, and when the regulating piece 20 of the first rotation regulating member 12 is engaged with any one of the engaging concave portions 18, the regulating piece 20 of the second rotation regulating member 13 can be disengaged from the engaging concave portion 18 without being associated with the engaging concave portion 18.

Therefore, in the rotary device 10, when 60 engaging recesses 18 are provided at equal intervals on the lower surface of the rotary bezel 11, for example, the first and second rotation restricting members 12, 13 alternately engage with the engaging recesses 18 to restrict the rotational position of the rotary bezel 11, so that the rotary bezel 11 can be position-restricted 120 times per one rotation of the rotary bezel 11. Thus, even if the number of the arrangement of the engagement recesses 18 is small, the rotation position of the rotary bezel 11 can be finely restricted by 2 times the number of the arrangement of the engagement recesses 18 by the first and second rotation restricting members 12, 13.

In the rotary device 10 of the wristwatch, the first to third support members 14 to 16 elastically contact the lower surface of the rotary bezel 11 to support the rotary bezel 11, and the upper end surfaces of the support heads 32, which are the opposing surfaces of the first to third support members 14 to 16 opposing the lower surface of the rotary bezel 11, are formed larger than the opening surface of the engagement recess 18, whereby the upper end surfaces of the support heads 32 do not fall into the engagement recess 18, and the lower surface of the rotary bezel 11 is slidably supported, whereby the rotary bezel 11 can be smoothly rotated.

That is, the support piece 30 elastically pressed against the lower surface of the rotary bezel 11 by the support spring 31 is provided with the support head 32 and the guide shaft 33, and the upper end surface of the support head 32 is elastically pressed against the lower surface of the rotary bezel 11 by the elastic force of the support spring 31, so that the upper end surface of the support head 32 in each of the support pieces 30 of the first to third support members 14 to 16 can be smoothly slid in accordance with the rotation of the rotary bezel 11.

In this case, the upper end surfaces of the support heads 32 of the support pieces 30 of the first to third support members 14 to 16 are formed as arc surfaces 32a having a large radius of curvature, whereby the lower surface of the rotary bezel 11 can be supported in a point-contact state, whereby the rotary bezel 11 can be rotated smoothly and satisfactorily without impeding the rotation operation of the rotary bezel 11.

That is, when the circular arc surfaces 32a of the support heads 32 of the support pieces 30 of the first to third support members 14 to 16 correspond to the engaging concave portions 18, the lower surface of the rotary bezel 11 can be supported in a state of two-point contact, and when the rotary bezel is disengaged from the engaging concave portions 18 without corresponding to the engaging concave portions 18, the lower surface of the rotary bezel 11 can be supported in one-point contact, and therefore the rotary movement of the rotary bezel 11 is not hindered, and the rotary bezel 11 can be rotated smoothly and satisfactorily.

In this case, the opening angles of the first to third support members 14 to 16 are each larger than 90 degrees, and thus the rotary bezel 11 can be reliably and satisfactorily held in a stable state. That is, the first to third support members 14 to 16 are arranged at angles slightly larger than 90 ° in terms of the opening angle of the first support member 14 and the second support member 15, the opening angle of the second support member 15 and the third support member 16, and the opening angle of the first support member 14 and the third support member 16 are each arranged at an angle of about 130 °, and therefore the first to third support members 14 to 16 can be arranged at positions corresponding to the respective corners of the substantially isosceles triangle.

Accordingly, the first to third support members 14 to 16 can support the rotary bezel 11 at three points located at each corner of the substantially isosceles triangle, and therefore the rotary bezel 11 can be further supported in a stable state, and even if the first and second rotation restricting members 12, 13 alternately engage with the engaging concave portions 18 with rotation of the rotary bezel 11, vertical shake of the rotary bezel 11 can be reliably and favorably prevented, and thus rotation of the rotary bezel 11 can be stabilized.

In the above-described embodiment, the case where the first and second rotation restricting members 12 and 13 are provided has been described as the rotation restricting member, but the present invention is not limited to this, and for example, one rotation restricting member may be provided, and three or more rotation restricting members may be provided. In the case where three or more, that is, n rotation restriction members are provided, the n rotation restriction members may be arranged at a phase difference of an angle obtained by dividing the opening angle n, which is the interval between the adjacent engagement concave portions 18, equally.

In this case, since the rotation position of the rotary bezel 11 can be regulated by n times the number of the arrangement of the engaging concave portions 18 in the period in which the rotary bezel 11 rotates once by n rotation regulating members, the rotation angle of the rotary bezel 11 can be further finely regulated by a small number of the arrangement of the engaging concave portions 18.

The present invention is not limited to the above-described modification, and for example, when four or more rotation restricting members are provided, at least three rotation restricting members that are not corresponding to the engaging recess 18 but are disengaged from the engaging recess 18 may be disposed at an opening angle of 90 degrees when any one of the rotation restricting members is engaged with the engaging recess 18.

In the case of such a configuration, the rotation position of the rotary bezel 11 can be regulated by any one of the four or more rotation regulating members, and the rotary bezel 11 can be stably supported by any other three rotation regulating members, which function as the first to third support members 14 to 16 described above.

In the above-described embodiment, the case where the first to third support members 14 to 16 are provided as the plurality of support members has been described, but the present invention is not limited to this, and for example, four or more support members may be provided.

In the above-described embodiment, the case where the upper end portion of the support head portion 32 in each of the support pieces 30 of the first to third support members 14 to 16 is formed as the circular arc surface 32a having a large radius of curvature has been described, but the present invention is not limited to this, and the upper end portion of the support head portion 32 may be formed as a flat surface. In this case, in order to prevent the edge of the opening of the engagement recess 18 from being caught, a chamfer may be provided on the outer periphery of the flat surface of the support head 32.

In the above-described embodiment, as the plurality of support members, the first to third support members 14 to 16 are configured such that when the arcuate surface 32a corresponds to the engagement concave portion 18 of the rotary bezel 11, the arcuate surface 32a contacts the edge portion of the opening portion of the engagement concave portion 18 at two points, and when the arcuate surface 32a does not correspond to the engagement concave portion 18 but is separated from the engagement concave portion 18, the arcuate surface 32a contacts the lower surface of the rotary bezel 11 at one point, but may be configured such that when the first and second rotation restriction members 12 and 13 are engaged with and separated from the engagement concave portion 18 of the rotary bezel 11, the arcuate surfaces 32a of the first to third support members 14 to 16 are not corresponding to the engagement concave portion 18, depending on the state when they are engaged with and separated from the engagement concave portion 18, respectively.

As shown in fig. 9, when the first rotation restriction member 12 is engaged with the engagement recess 18 of the rotary bezel 11, the first support member 14 located at the opposing position as shown in fig. 5 is configured such that the circular arc surface 32a corresponds to the engagement recess 18 of the rotary bezel 11 and the circular arc surface 32a contacts the edge of the opening of the engagement recess 18 at two points, as shown in fig. 9, when the second rotation restriction member 13 is disengaged from the engagement recess 18 of the rotary bezel 11, the second support member 15 located at the opposing position as shown in fig. 5 is configured such that the circular arc surface 32a does not correspond to the engagement recess 18 of the rotary bezel 11 but is disengaged from the engagement recess 18 and the circular arc surface 32a contacts the lower surface of the rotary bezel 11 at one point, and the third support member 16 is in the same state as the first support member 14 or the second support member 15.

The same is true for the case shown in fig. 10. That is, when the rotation restriction member is engaged with the engagement recess 18 of the rotary bezel 11, the support member also corresponds to the engagement recess 18, and when the rotation restriction member is disengaged from the engagement recess 18 of the rotary bezel 11, the support member does not correspond to the engagement recess 18 but is disengaged from the engagement recess 18, whereby the vertical shake of the rotary bezel 11 can be further reliably and satisfactorily prevented, and the rotation of the rotary bezel 11 can be stabilized.

In the above-described embodiment, the rotation restriction members are configured to be capable of rotating the rotary bezel 11 only in one direction and restricting rotation in the opposite direction when the first and second rotation restriction members 12 and 13 are engaged with the engagement concave portion 18 of the rotary bezel 11, but the rotation restriction members are not limited thereto, and for example, the engagement concave portion 18 of the rotary bezel 11 may be provided with inclined portions of the same angle, the protruding portions 22 of the first and second rotation restriction members 12 and 13 may be configured to have shapes corresponding to the inclined portions of the engagement concave portion 18, not restricting rotation in the opposite direction, and the shape of the engagement concave portion 18 of the rotary bezel 11 may be rounded, the corresponding rounded shape, or the like, and not restricting rotation in the opposite direction.

In the above-described embodiment and its modifications, the case where the present invention is applied to a wristwatch has been described, but the present invention is not necessarily limited to a wristwatch, and can be applied to various watches such as a traveling watch, an alarm clock, a table clock, and a wall clock.

While the present invention has been described with reference to the above embodiments, the present invention is not limited thereto, and the invention described in the claims and the equivalents thereof are included.

Claims (7)

1. A rotating device is characterized by comprising:

A rotation member rotatably provided on the outer periphery of the device main body, the rotation member having engagement recesses arranged in a circumferential direction on a rotation surface orthogonal to the central axis;

A regulating member which is engaged with any one of the engaging concave portions to regulate the rotation position of the rotation member in a manner capable of being opened and closed, and

A support member provided so as to be slidable with respect to the rotation surface for supporting the rotation member,

The opposite surface of the support member contacting the rotation surface is provided at a position where the engagement recess passes along with the rotation of the rotation member,

The restricting member is provided at a position different from the supporting member.

2. The rotating device according to claim 1, wherein,

The support member supports the rotation member at least at three points,

The regulating member is provided at a position facing any one of the plurality of support members with the central axis therebetween.

3. The rotating device according to claim 1, wherein,

The support member includes: a support piece elastically contacting with the rotation surface and supporting the rotation member; and a support spring for biasing the support piece in a direction of pressing the support piece against the rotating surface.

4. The rotating device according to claim 1, wherein,

The facing surface of the support member, which contacts the rotation surface, is formed to have a larger size than an opening size of the engagement recess.

5. The rotating device according to claim 1 or 2, wherein,

The opposing surface is formed in an arc shape.

6. The rotating device according to claim 1, wherein,

The restricting member includes: a regulating piece for regulating the rotation of the rotating member; and a regulating spring for biasing the regulating piece in a direction of being pressed against the rotation surface of the rotation member.

7. A timepiece, comprising:

a rotation member rotatably provided around the display unit at the display time, the rotation member having engagement recesses arranged in a circumferential direction on a rotation surface orthogonal to the central axis;

A regulating member that is engaged with any one of the engaging recesses so as to be capable of moving out and into engagement with the engaging recess to regulate a rotational position of the rotating member; and

A support member slidably provided with respect to the rotation surface for supporting the rotation member,

An opposing surface of the support member contacting the rotation surface passes through the engagement recess in accordance with rotation of the rotation member,

The restricting member is provided at a position different from the supporting member.