Timepiece

Abstract

The invention provides a timepiece having a rotary bezel which is low in cost and can be thinned. The timepiece includes: hands that display time; a movement that drives the hands; a housing that accommodates the movement; a rotating bezel provided so as to be rotatable with respect to the watch body; and a rotating bezel pressing ring fixed to the watch body, the rotating bezel pressing ring having a protruding portion extending radially outward, the rotating bezel being held between the protruding portion and the watch body, the protruding portion being provided with a circular ring restricting portion, the circular ring restricting portion having a plurality of restricting receiving portions continuous in the circumferential direction, and the restricting receiving portions being provided in the circumferential direction. The rotating bezel is provided with a restricting member that engages with the restricting receiving portion, and when the rotating bezel is rotated, the restricting member sequentially engages with the restricting receiving portion, thereby causing the rotating operation of the rotating bezel to generate a touch feeling to restrict the position of the rotating bezel.

Description

Technical Field

[0001] The invention relates to a timepiece with a rotating bezel. Background Art

[0002] In the past, watches with rotating bezels such as diving watches are known. The rotating bezel is a bezel around which a glass cover is mounted in a rotatable manner, and a scale corresponding to the hands of the watch is displayed on the front of the bezel. For such a rotating bezel, the relationship between the scale and the hands is set by appropriately rotating it, so that the function of easily reading the elapsed time from a certain moment can be obtained.

[0003] Among such watches with rotating bezels, there is a known watch in which a striking groove is formed on the back side of the rotating bezel and a leaf spring component is mounted on the case side of the watch (see Patent Document 1). In this watch, by engaging the leaf spring component with the striking groove, a striking feeling can be obtained when the rotating bezel is rotated, and the rotating bezel can be prevented from reversing.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2015-108512

[0005] However, in the timepiece of Patent Document 1, in order to obtain an appropriate click feeling and reverse rotation prevention effect, it is necessary to ensure the bending amount of the leaf spring member and to define the height from the groove portion of the housing side where the leaf spring member is mounted to the click groove of the rotating bezel. Therefore, there is a problem that the thickness of the timepiece cannot be reduced and it is difficult to reduce the thickness.

[0006] In addition, the striking grooves must be formed continuously in the circumferential direction on the back surface of the rotating bezel, which increases the number of processing steps and the cost. Summary of the invention

[0007] The watch disclosed in the present invention is characterized in that it comprises: a pointer which displays the time; a movement which drives the pointer; a watch body which accommodates the movement; a rotating bezel which is arranged to be rotatable relative to the watch body; and a rotating bezel pressing ring which is fixed to the watch body, the rotating bezel pressing ring having a protrusion which protrudes radially outward and holds the rotating bezel between the protrusion and the watch body, a circular ring limiting portion being provided on the protrusion, a plurality of limiting receiving portions of the circular ring limiting portion being continuous in the circumferential direction, a limiting component which engages with the limiting receiving portion being provided on the rotating bezel, and when the rotating bezel is rotated, the limiting component engages with the limiting receiving portion in sequence, thereby causing a touch feeling to be generated in the rotation operation of the rotating bezel to limit the position of the rotating bezel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a front view showing the timepiece according to the first embodiment.

[0009] Figure 2 It is a cross-sectional view showing the timepiece according to the first embodiment.

[0010] Figure 3 It is a plan view showing the main part of the timepiece according to the first embodiment.

[0011] Figure 4 It is an exploded perspective view showing the main parts of the timepiece according to the first embodiment.

[0012] Figure 5 It is an enlarged view showing the main part of the timepiece according to the first embodiment.

[0013] Fig. 6A It is a diagram showing the operation of the rotating bezel according to the first embodiment when it rotates.

[0014] Figure 6B It is a diagram showing the operation of the rotating bezel according to the first embodiment when it rotates.

[0015] Figure 6C It is a diagram showing the operation of the rotating bezel according to the first embodiment when it rotates.

[0016] Figure 7 It is a plan view showing the main part of the timepiece according to the second embodiment.

[0017] Figure 8 It is a plan view showing the main part of the timepiece according to the third embodiment.

[0018] Description of symbols

[0019] 1: watch; 1B: watch; 1C: watch; 6: rotating bezel pressure ring; 7: rotating bezel; 7B: rotating bezel; 7C: rotating bezel; 10: movement; 21: hour hand; 22: minute hand; 23: second hand; 31: watch body; 32: back cover; 34: gasket; 35: gasket; 60: ring body; 62: internal thread; 63: protrusion; 64: ring limiter; 64A : Restriction receiving portion; 65: Restriction surface; 66: Guide surface; 67: Tooth portion; 68: Groove portion; 70: Bezel body; 71: Base portion; 77: Sealing gasket; 78: Sealing gasket; 80: Display panel; 90: Ratchet spring; 92: Engaging portion; 93: Force-applying portion; 95: Screw; 96: Pin; 100: Torsion spring; 661: Inner circumferential surface; 662: Inclined surface; 663: Outer circumferential surface. DETAILED DESCRIPTION

[0020] [First embodiment]

[0021] Hereinafter, a timepiece with a rotating bezel 1 according to a first embodiment will be described with reference to the drawings.

[0022] Figure 1 It is a schematic front view showing the timepiece 1 according to the first embodiment. Figure 2 is a cross-sectional view of the clock 1, Figure 3 is a plan view showing the main parts of the timepiece 1. Figure 4 It is an exploded perspective view showing the exterior components of the timepiece 1 .

[0023] like Figure 1 and Figure 2 As shown, the watch 1 is a diving watch used by divers diving into the sea, etc. As a display unit for displaying time, the watch 1 includes a circular dial 2, an hour hand 21, a minute hand 22, a second hand 23, a date wheel 24, a power reserve hand 25, a movement 10, a case 3 accommodating the movement 10, a strap 4 for installation, a crown 5 for time adjustment, etc., a rotating bezel pressing ring 6 mounted on the case 3, and an annular rotating bezel 7 rotatably provided on the case 3.

[0024] like Figure 2 As shown in FIG. 1 , the housing 3 includes a watch body 31, a back cover 32, and a glass cover 33. The watch body 31 is formed in a substantially cylindrical shape, and a cylindrical holding portion 310 is formed at the upper end portion (front side of the watch) of the watch body 31. The glass cover 33 is mounted on the inner circumference of the holding portion 310 via an annular sealing gasket 34. Figure 4 As shown, the outer peripheral surface of the holding portion 310 is formed with an external thread portion 311 into which the rotating bezel pressing ring 6 described later is screwed. In addition, the watch body 31 is formed on the outer peripheral side of the holding portion 310 and has an upper surface 314 facing the back surface of the rotating bezel 7 described later.

[0025] like Figure 2 As shown, an internal thread portion 312 is formed at the lower end portion (on the back side of the watch) of the inner circumference of the watch body 31, and an external thread portion 321 formed on the back cover 32 is screwed into the internal thread portion 312. Therefore, the back cover 32 is mounted on the watch body 31 in a detachable manner. In addition, an annular gasket 35 is arranged between the watch body 31 and the back cover 32.

[0026] The dial 2, the hour hand 21, the minute hand 22, the second hand 23, the date wheel 24, the power reserve hand 25, and the movement 10 are stored inside the housing 3. The movement 10 of the present embodiment has a spring that displays the duration using the power reserve hand 25. That is, the movement 10 is a movement of an electronically controlled mechanical watch having a wheel train, a spring, a governor and a generator, etc., or a movement of a mechanical watch having a wheel train, a spring, an escapement, etc. In addition, the movement 10 may also be a movement for an electronic watch having a wheel train, a stepping motor, a battery, etc.

[0027] [Rotating bezel push ring]

[0028] Also like Figure 4As shown, the rotating bezel pressing ring 6 includes: a ring body 60 formed in an annular shape; a wrench groove 61 formed on the upper surface of the ring body 60; an internal thread portion 62 formed on the inner circumferential surface of the ring body 60; and a protrusion 63 formed to protrude from the outer circumferential surface of the ring body 60 toward the outer circumferential side.

[0029] The spanner grooves 61 are formed at six locations on the upper surface of the ring body 60 at intervals of 60°. Thus, by using a screw back opener used when disassembling a screw-type back cover, and rotating it in a state where two or three claws are engaged with the spanner grooves 61, the rotating bezel pressing ring 6 can be installed on or removed from the watch body 31. In addition, the spanner grooves 61 are not limited to being formed in 6 locations, for example, they can be formed in more than 2 locations. In addition, as a structure for rotating the rotating bezel pressing ring 6, it is not limited to providing the spanner grooves 61. For example, a clamp matching the limiting receiving portion 64A described later can also be made, and the clamp is engaged with the limiting receiving portion 64A to rotate the rotating bezel pressing ring 6.

[0030] The internal thread portion 62 is formed on the inner peripheral surface of the ring body 60 so as to be threadedly engaged with the external thread portion 311 of the holding portion 310 .

[0031] like Figure 2 As shown, the height dimension of the protrusion 63, that is, the dimension in the thickness direction of the watch 1, is smaller than the height dimension of the ring body 60, and the protrusion 63 is formed in the middle part of the ring body 60 in the thickness direction of the watch 1. The lower surface of the protrusion 63 is formed above the lower surface of the ring body 60, that is, at the front side of the watch. As a result, when the rotating bezel pressing ring 6 is screwed and installed on the retaining portion 310, a groove of a predetermined height dimension is defined between the upper surface 314 of the watch body 31 and the protrusion 63. The rotating bezel 7 is arranged in the groove between the upper surface 314 of the watch body 31 and the protrusion 63, and is held so as to be rotatable without falling off from the watch body 31 and the rotating bezel pressing ring 6.

[0032] The upper surface of the protrusion 63 is formed below the upper surface of the ring body 60, that is, at the back side of the watch. Thus, the upper surface of the protrusion 63 is arranged below the bottom surface of the spanner groove 61, so that the protrusion 63 is not affected when the upper surface of the ring body 60 is cut to process the spanner groove 61.

[0033] like Figure 3 and Figure 4 As shown in FIG. 1 , an annular limiting portion 64 is formed on the outer circumferential surface of the protruding portion 63 along the circumferential direction. The annular limiting portion 64 is formed by connecting a plurality of limiting receiving portions 64A in the circumferential direction. In the present embodiment, 60 limiting receiving portions 64A are formed in the circumferential direction of the rotating bezel pressing ring 6. Therefore, the limiting receiving portions 64A are formed in the circumferential direction of the rotating bezel pressing ring 6 at a pitch of 6° at a central angle.

[0034] like Figure 5 As shown in the enlarged view of FIG. 6 , the limiting receiving portion 64A has a limiting surface 65 and a guide surface 66. The limiting surface 65 is a surface formed along the diameter direction of the ring body 60 and is arranged at a pitch of 6° at a central angle. Figure 5 In the case where the timepiece 1 is viewed from the front side, A1 is the counterclockwise direction, which is the direction opposite to the clockwise direction of the minute hand 22 and other hands, and A2 is the clockwise direction. In addition, the counterclockwise direction A1 is the first direction, and the clockwise direction A2 is the second direction.

[0035] The guide surface 66 includes an inner peripheral surface 661 that is continuous with the inner peripheral side edge of the limiting surface 65, an inclined surface 662 that is continuous in an inclined direction from the end of the inner peripheral surface 661 in the counterclockwise direction A1 toward the outer periphery in the counterclockwise direction, and an outer peripheral surface 663 that is continuous in the counterclockwise direction A1 from the outer peripheral end of the inclined surface 662. The end edge of the outer peripheral surface 663 in the counterclockwise direction A1 is continuous with the outer peripheral side edge of the next limiting surface 65.

[0036] Thus, the restriction receiving portion 64A includes a tooth portion 67 defined by the restriction surface 65 , the outer peripheral surface 663 , and the inclined surface 662 and protruding toward the outer peripheral side, and a groove portion 68 defined by the restriction surface 65 , the inner peripheral surface 661 , and the inclined surface 662 and recessed toward the inner peripheral side.

[0037] [Rotating bezel]

[0038] like Figures 1 to 4 As shown, the rotating bezel 7 is disposed around the holding portion 310 of the watch body 31 and the glass cover 33 , and is provided to be rotatable relative to the watch body 31 .

[0039] The rotating bezel 7 includes a bezel body 70 formed in an annular shape (ring shape), a display plate 80 formed in an annular shape, and a click spring 90 as a restriction member.

[0040] [Bezel body]

[0041] The bezel body 70 is a substantially annular member formed of a metal material, such as Figure 2 , Figure 4 As shown, it includes a base portion 71 facing the upper surface 314 of the body 31 and an outer peripheral portion 72 formed to stand from the outer peripheral side of the base portion 71. The outer peripheral surface of the outer peripheral portion 72 is formed with an operation portion 73 having concavities and convexities arranged in the circumferential direction.

[0042] The base portion 71 is arranged along the upper surface 314 of the watch body 31, and its inner peripheral end portion is arranged between the protrusion 63 of the rotating bezel pressing ring 6 and the upper surface 314. At this time, the thickness dimension of the base portion 71 is smaller than the height dimension from the lower surface of the ring body 60 to the lower surface of the protrusion 63 of the rotating bezel pressing ring 6. Therefore, after the bezel body 70 is arranged on the outer peripheral side of the holding portion 310, when the rotating bezel pressing ring 6 is screwed into the holding portion 310, the bezel body 70 is restricted from moving upward, that is, toward the front side of the watch, by the protrusion 63, and is provided to be rotatable relative to the watch body 31 and the rotating bezel pressing ring 6.

[0043] like Figure 4 As shown in FIG. 1 , a threaded hole 75 and a mounting hole 76 are formed in the base portion 71. The threaded hole 75 is threaded with a screw 95 for mounting the pawl spring 90 so as to be rotatable, and the mounting hole 76 is used to mount a pin 96 that abuts against the pawl spring 90. The threaded hole 75 is formed to penetrate the base portion 71 in the thickness direction of the watch and is formed at a position in the circumferential direction of the base portion 71. In this embodiment, as shown in FIG. Figure 3 As shown, it is formed on the side of the approximately 12 o'clock position.

[0044] The mounting hole 76 is formed to penetrate the base portion 71 in the thickness direction of the timepiece, and is formed at a position separated by a predetermined dimension from the screw hole 75, in this embodiment, at about the 10 o'clock position side.

[0045] The formation positions of the screw holes 75 and the mounting holes 76 are not limited to those in the present embodiment, and can be set at free positions on the circumference of the base portion 71 .

[0046] like Figure 2 As shown, the upper portion of the outer peripheral portion 72 slightly protrudes toward the inner peripheral side, and a display panel 80 is press-fitted and fixed to the inner peripheral surface of the protruding portion via an annular seal 77 .

[0047] A seal 78 is also disposed between the bezel body 70 and the watch body 31. By providing the seal 78, the sliding property of the rotating bezel 7 can be improved, and the rotating bezel 7 can be smoothly rotated. Moreover, since the base portion 71 of the bezel body 70 is pushed upward by the seal 78 and abuts against the lower surface of the protrusion 63, the bezel body 70 does not shake and rotates stably when the user operates. In addition, when the user does not operate, the bezel body 70 is held in the circumferential direction by the engagement of the pawl spring 90 with the rotating bezel pressing ring 6, and is also held in the thickness direction of the watch by abutting the base portion 71 against the protrusion 63 using the seal 78.

[0048] In addition, a sheet material may be provided in place of the gasket 78 to improve the sliding property. In addition, when the sliding property of the rotating bezel 7 can be improved and the shaking can be prevented by improving the processing accuracy of each component and performing surface treatment such as ion plating, it is also possible to configure the bezel body 70 and the watch body 31 without providing a gasket 78 or other components.

[0049] [Display Board]

[0050] like Figure 2 As shown, the display panel 80 includes: an annular display portion 81 ; and a press-fit portion 82 that protrudes from the lower surface of the display portion 81 and is press-fitted into the inner peripheral side of the outer peripheral portion 72 via a seal 77 .

[0051] like Figure 1 and Figure 4 As shown, a start mark 811 and minute scale 812 indicated by the minute hand 22 are marked on the surface of the display unit 81. The watch 1 of this embodiment is a diving watch, and by aligning the start mark 811 of the display unit 81 with the indicated position of the minute hand 22 at the start of diving, the elapsed time from the start of diving can be confirmed using the minute scale 812 indicated by the minute hand 22.

[0052] The lower surface of the press-fit portion 82 is disposed apart from the upper portion of the base portion 71 , and a detent spring 90 is disposed in a space between the base portion 71 and the press-fit portion 82 .

[0053] [Pawl spring]

[0054] like Figure 4 as well as Figure 5 As shown, the pawl spring 90 is composed of a slender plate and has: a base 91; a locking portion 92, which is formed at one end of the base 91 and can be locked with the limiting receiving portion 64A of the rotating bezel pressing ring 6; and a force-applying portion 93, which extends from the base 91 to a side roughly opposite to the locking portion 92, and the front end abuts against the pin 96.

[0055] The base 91 is formed with a hole 911 through which the screw 95 is inserted. The screw 95 is a stepped screw having a threaded portion that is screwed into the threaded hole 75 of the base 71 and a shaft portion that is arranged in the hole 911. Therefore, the base 91, that is, the pawl spring 90 is rotatably mounted on the base 71 by means of the screw 95. Therefore, the first axis that rotatably mounts the pawl spring 90 as a limiting member to the base 71 is composed of the screw 95. In addition, the first axis is not limited to the screw 95, and it can also be a fixing pin, a rivet, etc., as long as it is a component that can rotatably mount the pawl spring 90 to the base 71.

[0056] In addition, the width dimension of the base 91 is larger than that of the force-applying portion 93, and has strength that does not deform even when the engaging portion 92 formed at the end of the base 91 is engaged with the limiting receiving portion 64A. A first abutting surface 921 abutting against the inner peripheral surface 661 of the limiting receiving portion 64A, a second abutting surface 922 abutting against the limiting surface 65 of the limiting receiving portion 64A, and a third abutting surface 923 provided continuously from the first abutting surface 921 are formed on the end side of the base 91.

[0057] The engaging portion 92 formed at the end of the base 91 is composed of an angle divided by a first abutting surface 921 and a second abutting surface 922. The intersection angle of the first abutting surface 921 and the second abutting surface 922 is an acute angle less than 90°, for example, 82°. In addition, the intersection angle of the first abutting surface 921 and the third abutting surface 923 is an obtuse angle, for example, 168°.

[0058] The force applying portion 93 is provided on the side opposite to the engaging portion 92 via the screw 95 as the first axis, and is configured so that the width dimension decreases as it moves away from the base 91, and the front end thereof abuts against the side surface of the pin 96. In addition, when the engaging portion 92 of the pawl spring 90 abuts against the corner where the inner peripheral surface 661 and the restricting surface 65 intersect, and the pin 96 is not provided, as shown in FIG. Figure 5 As shown by the double-dotted line, the front end of the force-applying portion 93 overlaps with the mounting hole 76 into which the pin 96 is pressed when viewed from above. Therefore, the second shaft fixed to the base portion 71 and abutted by the force-applying portion 93 is constituted by the pin 96. In addition, the second shaft is not limited to the pin 96, and may be a stepped screw or the like, or may be a protrusion integrally formed on the base portion 71.

[0059] like Figure 5 As shown by the solid line, the pin 96 is installed in the installation hole 76, and the force-applying portion 93 is elastically deformed and slightly bent in a state where the front end of the force-applying portion 93 is in contact with the outer peripheral side of the pin 96. With the elastic force generated by the deformation of the force-applying portion 93, the engaging portion 92 is forced toward the inner peripheral surface 661 side and pressed against the limiting surface 65 and the corner of the inner peripheral surface 661, thereby limiting the rotating bezel 7 from rotating in the clockwise direction A2, i.e., the second direction, relative to the rotating bezel pressing ring 6.

[0060] In addition, the material of each component can be appropriately selected, but in this embodiment, the body 31 of the case 3, the back cover 32, the bezel main body 70 of the rotating bezel 7, and the rotating bezel pressing ring 6 are made of titanium, and the pawl spring 90 as a limiting component is made of stainless steel, but all components can also be made of stainless steel. In addition, if the rotating bezel pressing ring 6 is made of titanium and the pawl spring 90 is made of stainless steel, the durability can be improved compared to the case where both are made of titanium. In addition, the rotating bezel pressing ring 6 can also be electroplated by ion plating or the like. Electroplating can improve the sliding property, reduce the friction when the pawl spring 90 moves while contacting the guide surface 66, and smoothly rotate the rotating bezel 7.

[0061] Next, refer to Figure 6A to Figure 6C The operation of the click spring 90 when the rotating bezel 7 is rotated in the counterclockwise direction A1 as the first direction will be described.

[0062] like Fig. 6A As shown, when the engaging portion 92 is arranged in the groove portion 68, the front end of the force applying portion 93 abuts against the pin 96, so that the engaging portion 92 is forced toward the inner peripheral side of the rotating bezel pressing ring 6, that is, the inner peripheral surface 661 side. In addition, since the intersection angle of the first abutting surface 921 and the second abutting surface 922 of the engaging portion 92 is an acute angle, the front end of the engaging portion 92 is pressed in a manner of biting into the corner where the inner peripheral surface 661 of the groove portion 68 and the limiting surface 65 intersect, and the rotating bezel 7 can be reliably restricted from rotating in the clockwise direction A2. Furthermore, since a third abutment surface 923 is provided which is continuous with the first abutment surface 921, and is configured so that the third abutment surface 923 does not abut against the inclined surface 662 when the engaging portion 92 is engaged with the groove portion 68, the first abutment surface 921 of the engaging portion 92 can be prevented from separating from the inner circumferential surface 661, thereby reliably maintaining the rotation limiting state of the engaging portion 92 on the rotating bezel 7.

[0063] Next, when the user of the timepiece 1 grasps the operating portion 73 and rotates the rotating bezel 7 in the counterclockwise direction A1, the pawl spring 90 also moves in the counterclockwise direction A1 relative to the rotating bezel pressing ring 6, so that the third abutting surface 923 abuts against the outer peripheral edge of the inclined surface 662. Figure 6B As shown, the engaging portion 92 of the pawl spring 90 moves toward the direction of separation from the rotating bezel pressing ring 6, that is, toward the outer peripheral side, and the base 91 formed with the engaging portion 92 also rotates toward the outer peripheral side with the screw 95 as the rotation axis. At this time, the bending amount of the force applying portion 93 abutting against the pin 96 increases, and the force of the engaging portion 92 abutting against the rotating bezel pressing ring 6 is also increased by the force to restore the bending, that is, the elastic force.

[0064] As the rotating bezel 7 rotates in the counterclockwise direction A1, the first contact surface 921 contacts the inclined surface 662 of the limiting receiving portion 64A from the third contact surface 923, and then contacts the outer peripheral surface 663 of the limiting receiving portion 64A. As a result, the engaging portion 92 of the pawl spring 90 is disengaged from the groove portion 68.

[0065] When the rotating bezel 7 is further rotated in the counterclockwise direction A1, as shown in FIG. Figure 6C As shown, the engaging portion 92 of the pawl spring 90 engages with the next groove portion 68. At this time, the engaging portion 92 is separated from the outer peripheral surface 663 and abuts against the inner peripheral surface 661 under the state of being applied with the force generated by the bending of the force applying portion 93, so that a clicking sound is generated. In addition, since the engaging portion 92 abuts against the limiting surface 65, the rotation of the rotating bezel 7 in the clockwise direction A2 is restricted.

[0066] Therefore, when the rotating bezel 7 is rotated in the counterclockwise direction A1, each time the click spring 90 passes over the tooth portion 67 from the groove portion 68 and engages with the next groove portion 68, a clicking sound is generated, and the rotation of the rotating bezel 7 in the clockwise direction A2 is restricted. In addition, the click spring 90 moves in the counterclockwise direction A1 together with the rotating bezel 7, so the location where the clicking sound is generated also moves sequentially in the counterclockwise direction A1 around the dial 2.

[0067] According to the above-described configuration, in the rotating bezel 7 , when the user grasps the operation portion 73 and rotates it, the rotating bezel 7 including the display plate 80 can be integrally rotated in the counterclockwise direction.

[0068] When the rotating bezel 7 is rotated relative to the housing 3, the biasing portion 93 of the click spring 90 is elastically deformed, and the engaging portion 92 is disengaged from the groove 68 of the engaged limiting receiving portion 64A, and is engaged with the groove 68 of the next limiting receiving portion 64A. Thus, a click feeling is obtained during operation as the rotating bezel 7 rotates, and the click spring 90 is sequentially engaged with 60 limiting receiving portions 64A, so that the rotating bezel 7 can be held at that position every time the rotating bezel 7 is rotated 6°.

[0069] According to the timepiece 1 of the first embodiment, the following effects are achieved.

[0070] Since the base portion 71 of the bezel main body 70 is held between the protrusion 63 of the rotating bezel pressing ring 6 and the upper surface 314 of the watch body 31 , the holding structure of the rotating bezel 7 can be simplified, and the cost can be reduced.

[0071] Since the click spring 90 engaged with the restriction receiving portion 64A of the annular restriction portion 64 is provided on the outer peripheral side of the annular restriction portion 64 , the annular restriction portion 64 and the click spring 90 can be arranged in the radial direction of the timepiece 1 , and the thickness dimension of the timepiece 1 can be reduced to achieve thinness.

[0072] The protrusion 63 of the rotating bezel pressing ring 6 has both the function of holding the rotating bezel 7 and the function of limiting the rotation of the rotating bezel 7 by the limiting receiving portion 64A, so it is possible to simplify the structure of the rotating bezel pressing ring 6. In addition, since the limiting receiving portion 64A is formed on the protrusion 63, it can be easily formed by stamping or the like, and the processing cost can also be reduced.

[0073] The rotating bezel pressing ring 6 and the click spring 90 do not need to be disposed inside the watch body 31 , and thus will not affect the storage space of the movement 10 , and various movements 10 can be used.

[0074] The pawl spring 90 is engaged with the limiting receiving portion 64A, so that the rotating bezel 7 can rotate only in the counterclockwise direction A1 and can maintain its rotational position every 6 degrees. Therefore, the timepiece 1 of the present disclosure can be applied to a diving watch that is expected to rotate the rotating bezel 7 only in the counterclockwise direction A1 in order to accurately grasp the elapsed diving time.

[0075] Since the restriction member is formed of the click spring 90 which is a slender rod-shaped member, the click spring 90 can be commonly used even in watches having different planar dimensions.

[0076] The biasing portion 93 of the click spring 90 is formed in an elongated plate shape and deforms by contacting the pin 96 , thereby making it possible to set the biasing force for engaging the engagement portion 92 with the restriction receiving portion 64A constant.

[0077] Furthermore, since the click spring 90 is engaged with the limiting receiving portion 64A in the radial direction of the timepiece 1, it is possible to reduce the variation in the striking force or the striking sound when the rotating bezel 7 is rotated. That is, when the rotating bezel 7 is operated, since the user grasps the rotating bezel 7 from above to operate it, a force that presses the rotating bezel 7 downward acts. This pressing force varies in the circumferential direction of the rotating bezel 7 due to the way the user holds the rotating bezel 7 and the deviation when the force is applied. Therefore, in the case of a structure that restricts the rotation in the vertical direction of the timepiece 1 as in Patent Document 1, the pressing force varies in the circumferential direction, and thus the magnitude of the striking force and the striking sound also varies.

[0078] In contrast, as in the present embodiment, when the limiting receiving portion 64A and the pawl spring 90 of the rotating bezel pressing ring 6 are arranged in the radial direction of the watch 1 for restriction, it is basically not affected by the deviation of the force pressing from above, so the deviation of the size of the striking force and the striking sound can be suppressed, and stabilization can be achieved.

[0079] The protruding portion 63 of the rotating bezel pressing ring 6 is provided with a tooth portion 67 divided by an inclined surface 662, an outer peripheral surface 663, and a limiting surface 65. Compared with a structure in which the inclined surface 662 and the limiting surface 65 are directly connected, such as a sawtooth structure used in a ratchet mechanism, the tooth portion 67 can increase the area of ​​the tooth portion 67, so that the rotating bezel 7 can be more reliably restricted from moving toward the front side of the watch, and the rotating bezel 7 can be reliably held by the protruding portion 63 and the watch body 31.

[0080] The display plate 80 is detachably mounted on the bezel body 70, and the rotating bezel pressing ring 6 and the click spring 90 can be hidden, thereby improving the appearance of the timepiece 1. In addition, by removing the display plate 80 from the bezel body 70, the rotating bezel pressing ring 6 can be exposed and detached, so maintenance work can also be easily performed.

[0081] Furthermore, since the rotating bezel pressing ring 6 is screwed to the watch body 31 in a screw-type manner, it can be easily assembled and disassembled in this regard. In particular, since the spanner groove 61 is formed in the rotating bezel pressing ring 6, the rotating bezel pressing ring 6 can be easily assembled and disassembled from the watch body 31 by using a jig used when assembling and disassembling the screw-type back cover 32.

[0082] [Second embodiment]

[0083] Next, refer to Figure 7 A timepiece 1B of the second embodiment is described. The timepiece 1B differs from the timepiece 1 of the first embodiment in that a rotating bezel 7B having two click springs 90 as a restricting member is used. Therefore, the same reference numerals are given to the same components as the timepiece 1 of the first embodiment, and description thereof is omitted.

[0084] The two detent springs 90 are arranged so that the phases of engagement with the limiting receiving portion 64A are staggered by 3°. In the present embodiment, 60 limiting receiving portions 64A of the rotating bezel pressing ring 6 are provided, and two detent springs 90 as limiting components are provided. When the number of limiting receiving portions 64A is set to n and the number of detent springs 90 that are engaged with the limiting receiving portion 64A in different phases is set to m, in the timepiece 1B, any detent spring 90 engages with the limiting receiving portion 64A whenever the rotating bezel is rotated 360° / (n×m)=360° / (60×2)=3°. Therefore, the number of strikes when the rotating bezel 7 is rotated one circle (rotated 360°) is m×n=120 strikes.

[0085] According to the timepiece 1B, the same effect as the timepiece 1 of the first embodiment can be achieved. In addition, a plurality of detent springs 90 are provided, and the phases of engagement with the limiting receiving portion 64A are staggered, so that the number of strikes can be increased without increasing the number of limiting receiving portions 64A. Therefore, the rotating bezel 7 can be positioned more finely, and convenience can be improved. For example, in the timepiece 1 of the first embodiment, since there is one detent spring 90 and the number of limiting receiving portions 64A is 60, the rotating bezel 7 is positioned every 6°, and the number of strikes is 60. In contrast, in the timepiece 1B of the present embodiment, since two detent springs 90 are arranged with staggered phases, the number of strikes of the rotating bezel 7 can be increased to 120, and the rotating bezel 7 can be positioned every 3°.

[0086] Furthermore, since there is no need to increase the number of the restriction receiving portions 64A, the rotating bezel pressing ring 6 can be processed more easily than, for example, the case where 120 restriction receiving portions 64A are processed.

[0087] [Third Embodiment]

[0088] Next, refer to Figure 8 A timepiece 1C according to the third embodiment is described. The timepiece 1C differs from the timepiece 1 according to the first embodiment in that a rotating bezel 7C having a torsion spring 100 as a restricting member is used. Therefore, the same components as those of the timepiece 1 according to the first embodiment are denoted by the same reference numerals and their description is omitted.

[0089] The torsion spring 100 includes a coil portion 101, a first arm portion 102, and a second arm portion 103. The torsion spring 100 is rotatably mounted on the rotating bezel 7C by inserting a pin 110 fixed to the base portion 71 of the rotating bezel 7C into the coil portion 101.

[0090] The first arm portion 102 of the torsion spring 100 engages with the limiting receiving portion 64A of the rotating bezel pressing ring 6, and the second arm portion 103 abuts against the inner peripheral surface of the outer peripheral portion 72. Thus, the first arm portion 102 of the torsion spring 100 engages with the limiting receiving portion 64A by a predetermined acting force. Therefore, in the torsion spring 100, the engaging portion is composed of the first arm portion 102, and the force applying portion is composed of the second arm portion 103 and the coil portion 101.

[0091] According to the timepiece 1C, the same effects as those of the timepiece 1 according to the first embodiment can be achieved. In addition, since the torsion spring 100 is used as the restriction member, the cost can be further reduced.

[0092] [Modifications]

[0093] The number of the restriction receiving portions 64A formed in the rotating bezel pressing ring 6 and the number of the detent springs 90 as the restriction members are not limited to the examples in the respective embodiments.

[0094] For example, when the number of the limiting receiving portions 64A is n and the number of the phase-shifted pawl springs 90 engaged with the limiting receiving portions 64A is m, if n=60 and m=3, the rotating bezel 7 can be restricted every 2° of rotation, and the number of clicks can be set to 180. On the other hand, if n=30 and m=4, the rotating bezel 7 can be restricted every 3° of rotation, and the number of clicks can be set to 120 even if the number of the limiting receiving portions 64A is reduced. Furthermore, the number of the limiting receiving portions 64A and the number of the phase-shifted pawl springs 90 engaged can be appropriately set, such as n=90, m=2, n=40, and m=3.

[0095] Furthermore, when a plurality of click springs 90 are provided, the click springs 90 are preferably arranged at substantially equal intervals, but may be arranged at different intervals.

[0096] Furthermore, when a plurality of click springs 90 are provided, the phases of engagement with the limiting receiving portion 64A may be made consistent. For example, three click springs 90 may be arranged at intervals of 120° and engaged with the limiting receiving portion 64A at the same time. In this case, when the rotating bezel 7 rotates, the circumferential deviation of the striking force can be reduced, and a constant striking sound can be generated.

[0097] In addition, a plurality of groups of detent springs 90 may be provided, the phases of which are staggered when engaging with the limiting receiving portion 64A. For example, when the detent springs 90 are provided at four locations at intervals of approximately 90°, two detent springs 90 arranged at intervals of 180° may be configured so that they engage with the limiting receiving portion 64A at the same phase, and the combination of the two groups of detent springs 90 engages with the limiting receiving portion 64A at different phases. In this case, m=2, and if n=60, the number of hits is also 120.

[0098] In the above-mentioned embodiment, the limiting receiving portion 64A and the pawl spring 90 of the rotating bezel pressing ring 6 are configured to allow the rotating bezel 7 to rotate only in the counterclockwise direction A1, but the limiting receiving portion 64A can also be set as a V-groove or a U-groove, and the engaging portion 92 of the pawl spring 90 can be configured to be able to engage with the limiting receiving portion 64A, so that the rotating bezel 7 can be configured to be able to rotate in both the counterclockwise direction A1 and the clockwise direction A2.

[0099] The restriction receiving portion may be configured such that the teeth are substantially triangular in plan view, like the saw teeth of a ratchet mechanism.

[0100] The structure for fixing the rotating bezel pressing ring 6 to the watch body 31 is not limited to the structure for fixing by screwing in as in the above-mentioned embodiment, and any structure may be used as long as the rotating bezel pressing ring 6 can be detachably fixed to the watch body 31 .

[0101] The watch of the present invention is not limited to diving watches, and can be applied to watches with rotating bezels. For example, in a watch with a so-called world time function, the names of representative cities in the world's time zones are sometimes displayed around a dial such as a bezel, and the rotating bezel of the present invention can also be applied to this display. In addition, in a chronograph watch, a rotating bezel with a circular slide rule for aviation measurement can also be applied. In addition, in an outdoor watch, a rotating bezel with a simple compass can also be applied.

[0102] The rotating bezel may rotate only in the counterclockwise direction A1 as in the above-mentioned embodiments, may rotate only in the clockwise direction A2, or may rotate in both directions, and the design may be determined according to the purpose of the rotating bezel.

[0103] The present invention is not limited to wristwatches, but can be applied to various timepieces having a rotating bezel.

[0104] [Summary of the present disclosure]

[0105] The watch disclosed in the present invention is characterized in that it comprises: a pointer which displays the time; a movement which drives the pointer; a watch body which accommodates the movement; a rotating bezel which is arranged to be rotatable relative to the watch body; and a rotating bezel pressing ring which is fixed to the watch body, the rotating bezel pressing ring having a protrusion which protrudes radially outward and holds the rotating bezel between the protrusion and the watch body, a circular ring limiting portion being provided on the protrusion, a plurality of limiting receiving portions of the circular ring limiting portion being continuous in the circumferential direction, a limiting component which engages with the limiting receiving portion being provided on the rotating bezel, and when the rotating bezel is rotated, the limiting component engages with the limiting receiving portion in sequence, thereby causing a touch feeling to be generated in the rotation operation of the rotating bezel to limit the position of the rotating bezel.

[0106] According to the timepiece disclosed herein, since the rotating bezel pressing ring is mounted on the watch body and the rotating bezel is held between the protrusion protruding radially outward of the rotating bezel pressing ring and the watch body, the holding structure of the rotating bezel can be simplified, thereby improving maintainability and reducing costs.

[0107] A circular ring limiting portion composed of a plurality of limiting receiving portions continuous in the circumferential direction is provided on the protruding portion of the rotating bezel pressing ring, and a limiting component engaged with the limiting receiving portion is provided on the rotating bezel, so that the circular ring limiting portion and the limiting component can be arranged along the radial direction of the watch. Therefore, the thickness of the watch can be reduced, and the watch can be made thinner. In addition, since the rotating bezel pressing ring and the limiting component do not need to be arranged inside the watch body, they will not affect the storage space of the movement, so that various movements can be used.

[0108] Furthermore, since the limiting receiving portion is formed on the protruding portion of the rotating bezel pressing ring, the protruding portion can have both the function of holding the rotating bezel 7 and the function of limiting the rotation of the rotating bezel 7, and can be easily formed even by stamping, etc., and the processing cost can also be reduced.

[0109] In addition, holding the rotating bezel between the protrusion of the rotating bezel pressing ring and the watch body includes not only a structure in which the rotating bezel is directly clamped by the protrusion and the watch body, but also a structure in which other materials such as a sheet are interposed therebetween.

[0110] In the timepiece disclosed in the present invention, preferably, when the limiting component is not engaged with the limiting receiving portion, the rotating bezel can rotate in a first direction, which is one of the clockwise direction and the counterclockwise direction, and in a second direction, which is the other direction, when the limiting component is not engaged with the limiting receiving portion, the limiting component comprises: an engaging portion, which engages with the limiting receiving portion; and a force applying portion, which applies a force to the engaging portion toward the limiting receiving portion, the limiting receiving portion comprising: a limiting surface, which abuts against the engaging portion to limit the rotation of the rotating bezel in the second direction; and a guide surface, which is continuously provided from the inner peripheral side end edge of the limiting surface to the outer peripheral side end edge of the next limiting surface in the first direction, as the rotating bezel rotates in the first direction, the engaging portion is guided by the guide surface and moves toward the radial outer peripheral side, and when the engaging portion disengages from the guide surface, the force applying portion moves toward the radial inner peripheral side and abuts against the limiting surface, thereby limiting the rotation of the rotating bezel in the second direction.

[0111] According to the timepiece disclosed in the present invention, the engagement portion of the limiting component abuts against the limiting surface of the limiting receiving portion, thereby limiting the rotation of the rotating bezel in the second direction. Therefore, the rotating bezel can be limited to rotate only in the first direction. Therefore, the timepiece disclosed in the present invention can be applied to a diving watch that is expected to rotate the rotating bezel only in one direction, that is, the counterclockwise direction, in order to accurately grasp the elapsed diving time.

[0112] In the timepiece disclosed herein, preferably, the guide surface comprises: an inner circumferential surface which is continuous with the inner circumferential side end edge of the limiting surface; an inclined surface which is continuous along an inclined direction from the end of the inner circumferential surface in the first direction toward the outer periphery in the first direction; and an outer circumferential surface which is continuous along the first direction from the outer circumferential end of the inclined surface.

[0113] According to the timepiece disclosed herein, since a tooth portion protruding outward and divided by an inclined surface, an outer peripheral surface, and a limiting surface is provided on the protruding portion of the rotating bezel pressing ring, and the tooth portion can increase the area compared to the sawtooth, it is possible to reliably limit the movement of the rotating bezel toward the front side of the timepiece, thereby enabling the rotating bezel to be reliably held by the protruding portion and the watch body.

[0114] In the timepiece disclosed herein, preferably, the rotating bezel pressure ring has an internal thread portion formed on the inner circumference, the watch body has an external thread portion formed on the outer circumference, and the rotating bezel pressure ring is fixed to the watch body by screwing the internal thread portion and the external thread portion.

[0115] According to the timepiece disclosed herein, since the rotating bezel pressing ring is installed by screwing it into the watch body, the rotating bezel pressing ring can be easily detached from the watch body. Therefore, even if the rotating bezel or the limiting component is damaged, these components can be easily replaced or repaired, and maintenance operations such as cleaning of each component can also be easily performed.

[0116] In the timepiece disclosed herein, preferably, the rotating bezel has a bezel body and the limiting component, the bezel body has a base portion arranged between the watch body and the protrusion, and the limiting component is a slender rod-shaped component installed on the base portion, and a locking portion is provided at one end to engage with the limiting receiving portion.

[0117] According to the timepiece of the present disclosure, the restriction member is formed of a long and thin rod-shaped member attached to the base portion of the bezel body. Therefore, the restriction member can be commonly used even in timepieces having different planar dimensions.

[0118] In the timepiece disclosed herein, preferably, the limiting member is rotatably mounted on the base portion via a first shaft, and a biasing portion is provided on the opposite side of the engaging portion across the first shaft, the biasing portion abutting against a second shaft fixed to the base portion.

[0119] According to the timepiece disclosed in the present invention, the limiting component is rotatably mounted on the base portion by means of a first axis formed by a screw or a pin, and a force-applying portion is provided on the side opposite to the engaging portion across the first axis, and the force-applying portion abuts against a second axis formed by a pin fixed to the base portion. Therefore, by abutting the force-applying portion against the second axis, the force-applying portion can be deformed to generate an elastic force, which is converted into a rotational torque around the first axis, so that the force that causes the limiting portion to abut against the limiting receiving portion can be controlled. Therefore, the rotation of the rotating bezel can be appropriately limited, and an appropriate touch feeling can be obtained when the rotating bezel is rotated.

[0120] In the timepiece disclosed herein, preferably, a gasket is disposed between the watch body and the rotating bezel.

[0121] According to the timepiece of the present disclosure, since the seal is disposed between the watch body and the rotating bezel, the sliding property of the rotating bezel during rotation is improved, and the rotation operability of the rotating bezel can be improved.

[0122] In the timepiece disclosed herein, it is preferred that a plurality of limiting components are provided, and when the number of the limiting receiving parts is n and the number of the limiting components that are engaged with the limiting receiving parts in a phase different from that of the limiting receiving parts is m, each time the rotating bezel is rotated 360° / (n×m), any one of the limiting components engages with the limiting receiving parts.

[0123] According to the timepiece disclosed herein, for example, when n=60 and m=2, the limiting member can be configured to engage with the limiting receiving portion each time the rotating bezel is rotated 360° / (60×2)=3°. Therefore, the number of strikes when the rotating bezel is rotated one circle (360°) can be set to 120, thereby increasing the number of strikes to a multiple of the limiting receiving portion.

[0124] In the timepiece disclosed herein, preferably, the rotating bezel includes: a bezel body; and a display panel detachably mounted to the bezel body, wherein the display panel is disposed on the front side of the timepiece with respect to the rotating bezel pressing ring and the restricting member.

[0125] According to the timepiece disclosed in the present invention, since the indicator plate is arranged on the front side of the rotating bezel pressing ring and the limiting component, the rotating bezel pressing ring and the limiting component can be prevented from being exposed on the front side of the timepiece, thereby improving the appearance design of the timepiece. In addition, by removing the indicator plate from the bezel body, the rotating bezel pressing ring can be exposed and loaded and unloaded, so maintenance work can also be easily performed.

Claims

1. A timepiece, characterized in that: have: A pointer, which indicates the time; a movement, which drives the pointer; A watch body, which houses the movement; A rotating bezel, which is configured to be rotatable relative to the watch body; as well as A rotating bezel pressing ring, which is fixed to the watch body, The rotating bezel pressing ring has a protrusion that protrudes radially outward and holds the rotating bezel between the protrusion and the watch body. The protruding portion is provided with a circular ring limiting portion, and a plurality of limiting receiving portions of the circular ring limiting portion are continuous in the circumferential direction. The rotating bezel is provided with a limiting component engaged with the limiting receiving portion. When the rotating bezel is rotated, the limiting component engages with the plurality of limiting receiving portions in sequence, so that the rotating operation of the rotating bezel generates a click feeling, thereby limiting the position of the rotating bezel.

2. The timepiece according to claim 1, characterized in that When the limiting member is not engaged with the limiting receiving portion, the rotating bezel can rotate in a first direction, which is one of a clockwise direction and a counterclockwise direction, and in a second direction, which is the other of the clockwise direction and the counterclockwise direction. The limiting component comprises: an engaging portion engaged with the limiting receiving portion; and a force applying portion which applies force to the engaging portion toward the limiting receiving portion. The limiting receiving portion comprises: a limiting surface that abuts against the engaging portion to limit the rotation of the rotating bezel in the second direction; and a guiding surface that is continuously provided from the inner peripheral side edge of the limiting surface to the outer peripheral side edge of the next limiting surface in the first direction, As the rotating bezel rotates in the first direction, the engaging portion is guided by the guide surface and moves radially outward. When the engaging portion disengages from the guide surface, the engaging portion moves radially inwardly with the aid of the force applying portion and abuts against the limiting surface, thereby limiting the rotation of the rotating bezel in the second direction.

3. The timepiece according to claim 2, characterized in that The guide surface comprises: an inner peripheral surface which is continuous with the inner peripheral side end edge of the limiting surface; an inclined surface which is continuous along an inclined direction from the end of the inner peripheral surface in the first direction toward the outer periphery in the first direction; and an outer peripheral surface which is continuous along the first direction from the outer peripheral end of the inclined surface.

4. The timepiece according to claim 1, characterized in that The rotating bezel pressure ring has an internal threaded portion formed on the inner circumference. The body is provided with an external threaded portion on the outer peripheral surface. The rotating bezel pressing ring is fixed to the watch body by screwing the internal thread portion and the external thread portion.

5. The timepiece according to claim 1, characterized in that The rotating bezel has a bezel body and the limiting member, The bezel body has a base portion disposed between the bezel body and the protruding portion. The restriction member is a member in the shape of an elongated rod mounted on the base portion, and has an engaging portion at one end thereof that engages with the restriction receiving portion.

6. The timepiece according to claim 5, characterized in that The limiting member is rotatably mounted on the base portion via a first shaft. A biasing portion is provided on the opposite side of the engaging portion across the first shaft, and the biasing portion abuts against a second shaft fixed to the base portion.

7. The timepiece according to claim 1, characterized in that A sealing gasket is arranged between the watch body and the rotating bezel.

8. The timepiece according to claim 1, characterized in that The limiting components are provided in plurality. When the number of the limiting receiving portions is n and the number of the limiting members that are engaged with the limiting receiving portions in a phase different from that of the limiting receiving portions is m, Whenever the rotating bezel is rotated 360° / (n×m), any one of the restriction members engages with the restriction receiving portion.

9. The timepiece according to claim 1, characterized in that The rotating bezel includes: a bezel body; and a display panel which is detachably mounted on the bezel body. The display panel is arranged on the watch front side of the rotating bezel pressing ring and the limiting member.

Images