JP3730173B2 - Rotating bezel device and portable watch equipped with the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary bezel device suitable for use in a portable timepiece with a rotating bezel such as a divers watch, and a portable timepiece having the same.
[0002]
[Prior art]
Mounted on the barrel so that it can rotate around the central axis of the barrel, and the bezel with irregularities at regular angular intervals along the circumferential direction. A portable timepiece with a rotating bezel such as a diver's watch having a spring that is elastically engageable with a body is known. In this type of portable timepiece, the bezel has a scale in the circumferential direction. For example, the bezel is set so that the origin or start point of the bezel scale is aligned with the position of the hand (for example, the minute hand) at the start of diving. Rotate and start diving. In this case, the dive time can be directly visually recognized by reading the position of the minute hand of the watch on the scale of the bezel.
[0003]
[Problems to be solved by the invention]
However, in this type of conventional portable timepiece with a rotating bezel, when an unexpected external force is applied to the bezel, the protruding portion of the spring is pushed out from the depression by the side wall of the concave / convex depression of the bezel. There is a possibility that the bezel is rotated because the engagement with the protrusion of the spring is released. As a result, there is a possibility that the diving time cannot be accurately known during diving.
[0004]
The present invention has been made in view of the above-described points, and an object of the present invention is to provide a rotary bezel device that is practically free from the possibility of unexpected rotation after being positioned, and a portable device including the rotary bezel device. To provide a watch.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the rotary bezel device of the present invention is mounted on the body and the body so as to be rotatable about the central axis of the body, and is uneven at regular angular intervals along the circumferential direction. And at least one arcuate base portion supported by the body portion, and adjacent ends of the arcs of the at least one base portion to form a ring in cooperation with the base portion. An annular spring structure having at least one arcuate spring portion to be connected and an engaging projection that protrudes toward the bezel in the middle of the arc of the spring portion and elastically engages with the irregularities of the bezel; And a stopper that is movably mounted on the body between a rotation permission position that allows rotation of the lens and a rotation prohibition position that prohibits rotation of the bezel.
[0006]
In the rotary bezel device of the present invention, “at least one arcuate base portion supported by the body portion and the at least one base portion to form a ring in cooperation with the base portion. And at least one arc-shaped spring portion that connects adjacent ends of the arc, and an engaging protrusion that protrudes toward the bezel in the middle of the arc of the spring portion and elastically engages with the irregularities of the bezel. Since the "annular spring structure" is provided, when the bezel is rotated, the engagement between the protrusion of the spring structure and the concave and convex recesses of the bezel is released against the spring force of the annular spring structure. A sense of resistance is imparted when When the projecting portion passes over the uneven convex portion and fits into the next concave portion by the spring force of the spring portion, the sense of resistance is practically lost, and a click feeling is obtained as a whole. Moreover, in the rotary bezel device of the present invention, in particular, the “stopper movably mounted on the body between the rotation allowable position that allows the bezel to rotate and the rotation prohibited position that prohibits the bezel from rotating” is provided. Thus, if the stopper is set at the rotation prohibition position after the bezel is rotated and positioned at the predetermined position, unexpected rotation of the bezel can be prohibited. Here, when rotating the bezel, the stopper is set to the rotation allowable position.
[0007]
In the rotary bezel device of the present invention, since the spring structure is annular and the arcuate spring part is connected to the adjacent end part of the base part, the arcuate spring part is formed by the base part at both ends thereof. Since it is supported, the support of the arc-shaped spring portion becomes more stable as compared with the case where the spring is cantilevered.
[0008]
Although at least one base and arcuate spring portion are required, for the stability of the ring, there are typically at least two places, typically two or three places on the ring, and the circumference of each element. The central portions in the direction are alternately arranged so as to be positioned at equiangular intervals of 180 degrees or 120 degrees. As a result, an average force can be applied to the ring in a balanced manner.
[0009]
In the rotary bezel device of the present invention, typically, “the stopper is close to and away from the bezel between the rotation allowable position and the rotation prohibition position and is engaged in the circumferential direction. And an annular stopper displacing means that is engaged with the engaged portion of the stopper at the engaging portion and screwed into the trunk portion with a helical groove. Accordingly, the annular stopper displacing means engaged with the trunk portion by the spiral groove is rotated, that is, rotationally displaced with respect to the trunk portion. Thus, the stopper engaged by the engaged portion with the engaging portion of the stopper displacing means can be displaced in the extending direction of the rotation center axis. Therefore, the stopper can be moved close to and away from the bezel, and the stopper can be moved between the rotation allowable position and the rotation prohibited position. That is, in the rotary bezel device of the present invention, typically, the stopper can be moved between the rotation allowable position and the rotation prohibited position by rotating the annular stopper displacement means. The “screwing by the spiral groove” is not limited to the screwing by the so-called threaded portion, and any engagement may be used as long as the engagement can be converted into translation.
[0010]
Here, even if the stopper is directly engaged with the unevenness of the bezel to restrict the rotation of the bezel, the stopper is indirectly engaged with the unevenness of the bezel via the annular spring structure. The rotation of the gel may be restricted.
[0011]
In the former case, when the stopper is in the rotation prohibition position, the stopper includes a rotation prohibition protrusion that engages with the unevenness of the bezel. In that case, typically, the spring structure includes a notch, and the rotation prohibiting protrusion of the stopper extends through the notch of the spring structure to the unevenness of the bezel. Here, the cutout portion of the spring structure is typically a through hole, but may be a groove.
[0012]
In the latter case, when the stopper is in the rotation prohibition position, the engagement release prohibiting protrusion that prohibits the engagement between the engaging protrusion in the middle of the spring portion of the spring structure and the unevenness of the bezel is released. When the stopper is provided and the stopper is in the rotation-permitted position, the disengagement prohibiting protrusion of the stopper moves backward to a position that allows disengagement between the engaging protrusion and the unevenness of the bezel. In that case, the engaging protrusions of the spring structure can be used together to restrict the rotation of the bezel. Also, in this case, typically, the spring structure has a recess on the back side of the spring portion, and when the stopper is in the rotation prohibition position, the stopper disengagement prohibiting protrusion engages with the recess of the spring structure. To do. This makes it possible to widen the stopper disengagement prohibiting protrusion of the stopper, and the rotation of the spring structure is restricted by the wide disengagement prohibiting protrusion through the back side recess of the spring structure, Inhibiting the rotation of the bezel can be easily performed.
[0013]
Such a rotating bezel device is typically incorporated in a portable watch such as a watch such as a divers watch. In that case, the body of the bezel device typically forms the body of the portable watch itself. However, in some cases, the rotating bezel device may be incorporated in another device.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, some preferred embodiments of the present invention will be described based on preferred examples shown in the accompanying drawings.
[0015]
【Example】
1 to 6 show a portable timepiece 2 having a rotary bezel device 1 according to a preferred embodiment of the present invention.
[0016]
The portable timepiece 2 includes a ring-shaped body 20. As can be seen from FIG. 5A and FIG. 2, the barrel 20 has a substantially cylindrical barrel body 21 and a wall thickness protruding outward in the radial direction from the lower end of the barrel body 21, that is, the back end 22. And a flange-shaped portion 23. A glass plate 10 is fitted on the front side of the barrel 20 via a seal packing 11, and a back cover 12 is screwed on the back side. 13 is also a seal packing. In the watertight chamber 14 formed by the barrel 20, the glass plate 10 and the back cover 12, a movement 16 supported by an inner frame 15 is in the center, a dial 17 and hands 18 are on the front side, a battery 19 and the like. Arranged and housed on the back side.
[0017]
The flange-like portion 23 of the body 20 has an annular recess 25 on its front surface 24, and a female thread portion 27 is formed on the outer wall 26 of the annular recess 25.
[0018]
A ring-shaped or annular click spring 40 is loosely fitted into the lower-diameter enlarged cylindrical portion 28 of the cylindrical main body portion 21 of the trunk 20. As shown in FIGS. 3A and 3B, the click spring 40 has three arcuate base portions 41a, 41b, 41c (indicated by reference numeral 41 when not distinguished from each other or generically). , Three arc-shaped spring portions 42a, 42b, 42c connecting adjacent ends of the base portions 41a, 41b, 41c (indicated by reference numeral 42 when not distinguished from each other or generically), and the spring portions 42a, 42b , 42c have click feeling imparting projections 43a, 43b, 43c (indicated by reference numeral 43 when not distinguished from each other or generically) as engagement projections projecting in the A1 direction on the front side. Here, the three base parts 41a, 41b, 41c, the three spring parts 42a, 42b, 42c, and the three engaging protrusions 43a, 43b, 43c have the same shape, and the click springs. 40 is symmetrical with respect to a rotation of 120 degrees around the central axis. As can be seen from FIG. 3A, the arc-shaped spring portion 42 has an outer cylindrical circumferential surface 44 that is common to the arc-shaped base portion 41, and the concave portion 46 is formed along the circumferential surface 45 on the radially inner side. It is cut out in an arc shape so as to form. As a result, the radial thickness of the arcuate spring portion 42 is thinner than the radial thickness of the arcuate base portion 41. Further, as can be seen from FIG. 3B, the arc-shaped spring part 42 has an axial front end face 47 that is common with the arc-shaped base part 41, and a concave portion 49 along the end face 48 on the rear side in the axial direction. It is cut out in an arc shape so as to form. As a result, the thickness (length) of the arcuate spring portion 42 in the axial direction is thinner than the thickness of the arcuate base portion 41 in the axial direction. Accordingly, the arc-shaped spring portion 42 has a radial or axial notch or recess 46, 49 as compared with the arc-shaped base portion 41, so that the rigidity is low, and the low-rigidity portion 42 is selectively used. Elastic deformation is possible. The inner peripheral surface 40i and the back side (back side) end surface 40r of the click spring 40 coincide with the inner peripheral surface 41i and the back side end surface 41r of the arcuate base 41. Therefore, the click spring 40 is in a state in which the inner peripheral surface 40i can be brought into contact with the portion 24u radially inward of the front surface 24 of the flange-like portion 23 of the cylinder 20 on the back surface side end surface 40r. The cylinder 20 is fitted so as to be substantially in contact with the enlarged diameter cylindrical portion 28.
[0019]
The spring portion 42 may be formed at two locations in the circumferential direction of the ring-shaped click spring 40, and may be two or four locations, or may be only one location depending on the case. When a plurality of spring portions 42 and base portions 41 are formed, typically, each of the plurality is the same as each other, but depending on the case, at least a part or all of the shapes may be different from each other. There may be.
[0020]
As can be seen from FIG. 5A and FIG. 2, the annular recess 25 of the flange-like portion 23 of the trunk 20 is annular so as to be movable in the front-rear directions A1 and A2 in parallel with the extending direction of the central axis C. A stopper 50 is provided. As shown in FIGS. 4A and 4B, the annular stopper 50 protrudes forward A1 from three locations in the circumferential direction of the annular stopper body 51 and the front end surface 52 of the annular stopper body 51. Protrusions 53a, 53b, 53c (indicated by reference numeral 53 when not distinguished from each other or generically), and an annular groove 55 as an engaged portion formed near the rear end of the outer peripheral surface 54 of the stopper main body 51 , And projecting portions 57a, 57b, 57c (indicated by reference numeral 57 when not distinguished from each other or generically) projecting radially inward from three locations in the circumferential direction of the inner peripheral surface 56 of the stopper main body 51. The protrusion 57 engages with the spline groove 32 extending in the front-rear directions A1 and A2 formed at a position corresponding to the protrusion 57 in the circumferential direction on the inner peripheral surface 31 of the annular recess 25 of the trunk 20. That is, as shown in the illustrated example, when three protrusions 57 are provided at intervals of 120 degrees (57a, 57b, 57c), the spline grooves 32 are also provided at three positions at intervals of 120 degrees. The stopper 50 engaged with the protrusion 32 by the protrusion 32 is supported so as to be movable in the front-rear directions A1 and A2 in a state where rotation in the circumferential directions B1 and B2 is prohibited. It is preferable that there are two or more protrusions 57 at intervals in the circumferential direction, and the protrusions 57 may be independent of the circumferential arrangement of the protrusions 53. However, in order to keep the balance of force and deformation seen from the circumferential direction and to minimize the restrictions on the orientation when being mounted, as shown in FIG. In addition, it is preferably positioned in a predetermined relative arrangement with respect to the adjacent protrusion 53 and symmetric with respect to the rotation around the central axis C. The protrusion 57 may be in any shape suitable for prohibiting the circumferential rotation of the stopper 50. For example, instead of the planar shape being a dome shape or an arc shape as shown in FIG. It may be a square with a corner or a triangle. Further, when the stopper 50 can have sufficient mechanical strength, spline recesses extending in the front-rear directions A1 and A2 are formed on the inner peripheral surface 56 of the stopper 50, and the peripheral surface of the annular groove 25 of the trunk 20 Spline ridges extending in the front-rear directions A1 and A2 may be formed on 31.
[0021]
The protrusion 53 of the annular stopper 50, that is, the protrusions 53 a, 53 b, and 53 c has a shape that fits exactly at the position where it fits with the back-side recess 49 of the click spring 40. That is, in the case where the concave portions 49 are provided at three positions at intervals of 120 degrees in the circumferential direction, the protrusions 53 are also provided at three positions at intervals of 120 degrees in the circumferential direction. Further, the circumferential length of the protrusion 53 is substantially the same as or slightly smaller than the circumferential length of the recess 49. On the other hand, the protrusion length of the protrusion 53 toward the front A1 is typically larger than the depth of the recess 49 in the A1 direction. Accordingly, the annular stopper 50 has a position E2 where the tip 58 of the projection 53 is actually in contact with the bottom surface 48 of the recess 49 of the click spring 40 and prohibits bending deformation in the G1 direction toward the back surface A2 of the spring portion 42 (FIG. 6). ) And a position E1 (FIG. 5) in which the tip 58 of the projection 53 is sufficiently separated from the bottom surface 48 of the recess 49 of the click spring 40 to allow the spring portion 42 to bend and deform toward the back surface A2. It is possible to move to A1 and A2. The protruding length of the protrusion 53 toward the front A1 may be approximately the same as the depth of the recess 49 in the A1 direction.
[0022]
A screw ring 60 as a stopper displacing means is disposed on the outer peripheral side region of the annular recess 25 of the barrel 20. The screw ring 60 includes a small-diameter cylindrical portion 61, a large-diameter cylindrical portion 62 connected to the front end portion of the small-diameter cylindrical portion 61, and an inner peripheral surface of a rear side or rear-side end portion of the small-diameter cylindrical portion 61. And an annular protrusion 63 protruding inward in the radial direction. The annular protrusion 63 engages with the annular groove 55 of the stopper 50, and when the screw ring 60 is moved in the front-rear direction A <b> 1 or A <b> 2, the stopper 50 is engaged via the engagement between the protrusion 63 and the groove 55. Engagement release allowing position E1 (FIGS. 5A and 5B) and the top surface 58 of the protrusion 53 of the stopper 50 prohibit the retraction of the bottom surface 48 of the recess 49 of the click spring 40 in the G1 direction. It is moved in the front-rear direction A1, A2 between the restriction position E2 ((a) and (b) in FIG. 6). The rear corner of the wall 55a on the back surface of the annular groove 55 of the stopper 50 and the front corner of the protrusion 63 are chamfered so that the protrusion 63 can be fitted into the groove 55. Yes. A male screw portion 64 is formed on the outer peripheral surface of the small-diameter cylindrical portion 61 of the screw ring 60, and the male screw portion 64 is screwed to the female screw portion 27 of the flange-like portion 23 of the trunk 20. Therefore, when the screw ring 60 is rotated in the B1 and B2 directions with respect to the barrel 20, the screw ring 60 is moved in the A1 and A2 directions, for example, with respect to the barrel 20, and further, due to the engagement at the portions 55 and 63. The stopper 50 is moved in the A1 and A2 directions. The large-diameter cylindrical portion 62 of the screw ring 60 can be brought into contact with the outer portion 24p of the front surface 24 of the flange-shaped portion 23 of the trunk 20 at the rear surface side end surface, and is further used for slip prevention formed by knurling. A large number of vertical grooves 66 are provided on the outer peripheral surface 65. Therefore, in order to rotate the screw ring 60 in the B1 and B2 directions, the screw ring 60 may be rotated by applying a fingertip to the outer peripheral surface 65 of the large-diameter cylindrical portion 62 of the screw ring 60.
[0023]
A bezel 70 is fitted to the cylindrical portion 21 of the barrel 20 so as to be rotatable in the B1 and B2 directions with respect to the barrel 20. The bezel 70 is secured to the inner peripheral protrusion 71 by engaging with the protrusion 21a of the cylindrical portion 21 of the barrel 20. Reference numeral 72 denotes a ring for preventing the bezel 60 from rattling. The bezel 70 includes an annular recess 74 as an unevenness on the bottom wall 73, and a bottom surface 75 of the recess 74 has horizontal surfaces 75a and 75b at the top 74a and valley 74b and is inclined to connect the top horizontal surface 75a and the valley horizontal surface 75b. Surfaces 75c and 75d are provided. In the illustrated example, the top horizontal plane 75a is actually flush with the horizontal plane 73a of the bottom wall 73. In this case, a large number of substantially identical recesses 76 form an annular recess 74 as a whole. As a result, they are arranged in a circle at regular intervals. However, the top horizontal surface 75a may not be flush with the horizontal surface 73a of the bottom wall 73, and in that case, it is preferably located behind the horizontal surface 73a.
[0024]
The depression 76 defined by the inclined surfaces 75c and 75d and the valley horizontal surface 74b between them is formed as an engagement protrusion of the click spring 40 as shown in FIG. 5B or FIG. 6B, for example. It has a substantially complementary shape such that most of the portion 43 on the tip side is fitted. Inclined surfaces 43c and 75d, in which the recess 76 of the bezel 70 expands toward the opening side, and a complementary inclined portion 43c that expands in the B1 and B2 directions as the engaging projection 43 of the click spring 40 moves away from the central portion 43a. 43d, the disengagement allowable position where the top surface 58 of the protrusion 53 of the stopper 50 is separated from the bottom surface 48 of the recess 49 of the click spring 40 as shown in FIGS. When the bezel 70 is rotated in the B1 or B2 direction, the inclined surface 75c or 75d of the depression 76 faces the inclined portion 43c or 43d of the engagement protrusion 43 of the click spring 40 toward the outside of the depression 76 when the bezel 70 is rotated in the B1 or B2 direction. Extrude in approximately the G1 direction. At this time, the arc-shaped spring portion 42 of the spring 40 is arranged so that the bottom surface 48 of the concave portion 49 is in contact with or close to the top surface 58 of the protrusion 53 of the stopper 50 as indicated by an imaginary line in FIG. , Bend and deform. On the other hand, as the bezel 40 rotates in the B1 or B2 direction, the top 43a of the engaging protrusion 43 that is elastically biased in the G2 direction among the both-end spring portions 42 of the spring 40 has a serrated tooth shape of the bezel 70. When the top part 75a of the first part 75a is climbed over, the engagement protrusion 43 fits in the next depression 76 of the bezel 70 in the G2 direction due to the elasticity of the spring part 42. Therefore, the bezel 70 can be rotated in the B1 and B2 directions with a click feeling.
[0025]
On the other hand, when the screw ring 60 is rotated in the B1 direction, as shown in FIGS. 6A and 6B, the stopper 50 engaged with the protrusion 63 of the screw ring 60 by the annular groove 55 is connected to the protrusion 53. When the top surface 58 is positioned at the disengagement prohibition position E2 close to the bottom surface 48 of the recess 49 of the click spring 40, rotation of the bezel 70 in the B1 and B2 directions is prohibited. That is, the bezel 70 is rotated in the B1 or B2 direction and the inclined portion 43c or 43d of the engaging projection 43 of the click spring 40 is pushed out of the recess 76 in the G1 direction by the inclined surface 75c or 75d of the recess 76. However, since the arc-shaped spring portion 42 of the spring 40 is prohibited from being displaced in the G1 direction by the protrusion 53 of the stopper 50 fitted up to the bottom surface 48 in the recess 49 as can be seen from FIG. Is not elastically deformed, the bezel 70 cannot be rotated in either the B1 direction or the B2 direction.
[0026]
A scale 78 is attached to the surface 77 of the bezel 70. Therefore, for example, before starting diving, the screw ring 60 is rotated in the B2 direction to move the stopper 50 to the disengagement allowable position E1 in the A2 direction, and the origin position 78a of the scale 78 of the bezel 70 is set to, for example, It is rotated so as to match the time at the start of diving (in the example shown, the position of the minute hand). When the positioning at the origin position 78a of the scale 78 of the bezel 70 is completed, the screw ring 60 is rotated in the B1 direction to move the stopper 50 to the disengagement prohibiting position E2 in the A1 direction. As a result, unexpected rotation of the bezel 70 is prohibited. Therefore, the time after the start of diving is known. The scale 78 may be provided counterclockwise so that the remaining allowable dive time can be directly recognized from the position of the clock hand instead of the dive time. In FIG. 1, reference numeral 79 denotes a decorative edge made of unevenness that also serves as a slip stopper for applying a fingertip when the bezel 70 is rotated, and is formed by knurling or the like.
[0027]
When the portable timepiece 2 having the rotary bezel device 1 of the first preferred embodiment according to the present invention configured as described above is a divers watch, the bezel of the rotary bezel device 1 is started before diving or the like is started. 70 is adjusted to the current time or the scheduled dive start time.
[0028]
For this purpose, first, the screw ring 60 is rotated in the B1 direction and moved in the A2 direction, whereby the stopper 50 in which the annular groove 55 as the engaged portion is engaged with the protruding portion 63 as the engaging portion is illustrated. 5 is set to the disengagement allowable position 5 or the unlock position E1.
[0029]
Next, the decorative edge (knurled part) 79 of the bezel 70 is pinched with a fingertip, and the start point 78a of the scale 78 of the bezel 70 coincides with the position of the minute hand at the current time or the planned dive start time. The bezel 70 is rotated with respect to the trunk 20 in the B1 direction or the B2 direction. As the rotation direction, for example, a direction that is easy to rotate or a direction with a smaller angle from the position of the starting point 78a to the position to be specified may be selected. If it is turned too far beyond the predetermined position, it may be rotated slightly in the reverse direction to match the predetermined position. When the stopper 50 is at the position E1, there is a gap between the bottom surface 48 of the concave portion 49 of the spring portion 42 of the click spring 40 and the top surface 58 of the protruding portion 53 of the stopper 50. 42 can bend in the G1 direction, the bezel 70 has the inclined surface 75d or 75c of the recess 76 to push the corresponding inclined portion 43c or 43d of the tip engaging portion 47 of the click spring 40 substantially in the G1 direction. Can be rotated in the B1 or B2 direction while bending in the G1 direction. During this rotation, every time the bezel 70 is rotated by a predetermined pitch (angle), the tip engaging portion 43 of the click spring 40 enters and exits the recess 76 of the unevenness 74 of the bottom surface 73 of the bezel 70. When the bezel 70 is rotated in the B1 or B2 direction, a desired click feeling is obtained. In this way, the rotation or positioning of the bezel 70 to the desired position is completed at the position where the tip engaging portion 43 of the click spring 40 is engaged with the recess 76 so that it is just fitted into the recess 76 of the bezel 70.
[0030]
Next, a finger is applied to the knurled groove 65 of the screw ring 60 and the screw ring 60 is rotated in the B1 direction. The ring 60 is moved in the A1 direction, and the stopper 50 is moved in the A1 direction with respect to the barrel 20 until the engaging projection 53 of the stopper 50 comes close to or substantially abuts the bottom surface 48 of the recess 49 of the click spring 40. The stopper 50 is moved from the disengagement allowable position (unlock position) E1 to the disengagement prohibition position (lock position) E2. As a result, the stopper 50 is positioned with the engaging protrusion 53 at the bottom just fitted into the recess 49 on the back surface of the spring portion 42 of the click spring 40.
[0031]
When the stopper 50 reaches the position E2, as can be seen from FIGS. 6A and 6B, the top surface 58 of the engaging projection 53 of the stopper 50 is a recess 49 on the back side of the spring portion 42 of the click spring 40. Substantially abuts the bottom surface 48. As a result, the deformation of the spring portion 42 of the click spring 40 in the G1 direction is prohibited by the stopper 50. Therefore, when the stopper 50 is set at the position E2, the spring portion of the click spring 40 supported by the back surface 48 by the stopper 50 regardless of whether the bezel 70 is rotated in the B1 direction or the B2 direction. Since there is no room for the escape of 42, the click spring 40 engaged with the recess 76 of the bezel 70 by the engagement protrusion 43 restricts or prohibits the rotation of the bezel 70. That is, there is virtually no risk of unexpected rotation of the bezel 70.
[0032]
As shown in FIGS. 5 and 6, the protrusion 53 of the stopper 50 fits into the recess 49 on the back surface of the engagement protrusion 43 of the click spring 40 so that the engagement protrusion 43 of the spring 40 and the depression of the bezel 70. 7 and 8, the protrusion 53A of the stopper 50 passes directly over the click spring 40 and directly into the recess 76 of the bezel 70, instead of controlling the engagement with and release of the engagement. It may be possible to project and engage. In the example shown in FIG. 7B and FIG. 8B, the protrusion 53A of the stopper 50 extends directly through the hole 40a formed in the click spring 40 to the recess 76 of the bezel 70. . The hole 40a may be a groove or the like. 7 and 8, the ring 66A is fitted in place of the longitudinal groove 66 of the screw ring 60 of FIGS. The ring 66A is made of, for example, a plastic or rubber material that serves as a slip stopper, and may have various colors as desired.
[Brief description of the drawings]
FIG. 1 is a partially broken plan view of a portable timepiece having a rotary bezel device according to a preferred embodiment of the present invention.
2 is an explanatory perspective view showing an example of the arrangement of main members (a trunk, a click spring, a stopper, and a screw ring) other than the bezel in the rotary bezel device of the portable timepiece of FIG. 1;
FIGS. 3A and 3B show a click spring of the rotary bezel device of FIGS. 1 and 2, in which FIG. 3A is a plan explanatory view, and FIG. 3B is a front (side) explanatory view.
FIGS. 4A and 4B show a stopper of the rotary bezel device of FIGS. 1 and 2, wherein FIG. 4A is a plan explanatory view, FIG. 4B is a front (side) explanatory view, and FIG. IVC-IVC line sectional explanatory drawing.
5 shows the positional relationship among the bezel, the click spring, and the stopper in a state in which the bezel rotation is allowed in the portable timepiece of FIG. 1, (a) is a VA of the portable timepiece of FIG. -VA sectional view explanatory drawing, (b) VB-VB sectional explanatory drawing of (a).
6 shows the positional relationship between the bezel, the click spring, and the stopper in a state in which the rotation of the bezel is prohibited in the portable timepiece of FIG. 1, wherein (a) is the same as (a) of FIG. Cross-sectional explanatory drawing seen in the same cross section, (b) is VIB-VIB sectional view explanatory drawing of (a).
7A and 7B are explanatory diagrams similar to FIG. 5, in which FIG. 7A is a cross-sectional explanatory view similar to FIG. 5A, and FIG. 7B is a cross-sectional explanatory view taken along the line VIIB-VIIB in FIG. Figure.
8A and 8B are explanatory views similar to FIG. 6, in which FIG. 8A is a cross-sectional explanatory view similar to FIG. 6A, and FIG. 8B is a cross-sectional description along line VIIIB-VIIIB in FIG. Figure.
[Explanation of symbols]
1 Rotating bezel device
2 Mobile watch
20 torso
24 annular recess
26 Notch
40 click spring
41 Base
42 Spring
43 Engaging protrusion
50 stopper
53 Projection
55 Annular groove
60 thread ring
63 Engaging protrusion
70 bezel
74 Annular recess
75c, 75d inclined surface
76 Dimple

Claims (7)

The torso,
A bezel that is mounted on the barrel so as to be rotatable about the central axis of the barrel and has irregularities at regular angular intervals along the circumferential direction;
At least one circular base supported by the body, and at least one circle connecting adjacent ends of the circular arc of the at least one base so as to form a ring in cooperation with the base; An annular spring structure provided with an arcuate spring portion and an engaging projection that protrudes toward the bezel in the middle of the arc of the spring portion and elastically engages with the irregularities of the bezel;
A stopper that is movably mounted between the rotation allowable position that allows rotation of the bezel and the rotation prohibition position that prohibits rotation of the bezel ;
The stopper includes an engaged portion that can be moved toward and away from the bezel between the rotation allowable position and the rotation prohibited position, and extends in a circumferential direction. A rotary bezel device further comprising an annular stopper displacing means that engages with an engaging portion and is screwed into the body portion with a spiral groove . The torso,
A bezel that is mounted on the barrel so as to be rotatable about the central axis of the barrel and has irregularities at regular angular intervals along the circumferential direction;
At least one circular base supported by the body, and at least one circle connecting adjacent ends of the circular arc of the at least one base so as to form a ring in cooperation with the base; An annular spring structure provided with an arcuate spring portion and an engaging projection that protrudes toward the bezel in the middle of the arc of the spring portion and elastically engages with the irregularities of the bezel;
A stopper mounted on the body portion movably between a rotation allowable position allowing rotation of the bezel and a rotation prohibiting position prohibiting rotation of the bezel;
Have
A rotary bezel device , wherein the stopper includes the rotation prohibiting protrusion that engages with the unevenness of the bezel when the stopper is in the rotation prohibiting position . Disengagement prohibiting protrusion that prohibits disengagement of the engaging protrusion and the unevenness of the bezel in the middle of the spring portion of the spring structure when the stopper is in the rotation prohibiting position. The stopper is provided with a portion, and when the stopper is in the rotation allowable position, the disengagement prohibiting protrusion of the stopper allows disengagement between the engaging protrusion and the unevenness of the bezel. The rotary bezel device according to claim 1 , wherein the rotary bezel device moves backward.   The said spring structure is provided with a recessed part in the back side of a spring part, and when the said stopper exists in the said rotation prohibition position, the said disengagement prohibition protrusion part of the said stopper engages with the recessed part of the said spring structure. Rotating bezel device as described in 1. The rotary bezel device according to claim 1 , wherein the stopper includes the rotation prohibiting protrusion that engages with the unevenness of the bezel when the stopper is in the rotation prohibiting position. 6. The rotary bezel device according to claim 2, wherein the spring structure includes a notch portion, and the rotation prohibiting protrusion of the stopper extends through the notch portion of the spring structure to the unevenness of the bezel.   A portable timepiece comprising the rotary bezel device according to any one of claims 1 to 6, wherein a body portion is a case body of the timepiece.

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