JP2006053104A - Timepiece with rotary bezel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a timepiece with a rotary bezel capable of operating a winding crown with light operation force, and capable of preventing the winding crown from being rotated even when the rotary bezel is rotated arbitarily. <P>SOLUTION: In this timepiece with the rotary bezel 16 provided with the rotary bezel 16 in a timepiece case 13, and provided with a rotation transmission mechanism comprising gears 50, 60 for rotating the winding crown 30 while interlocked with rotation of the rotary bezel 16, the rotary bezel 16 is provided to be movable along a thickness direction of the timepiece case 13, a spring 48 is provided to bias the rotary bezel 16 toward a direction separated from the winding crown 30, and the rotation is transmitted by the rotation transmission mechanism when the rotary bezel 16 is pushed down against biasing force of the spring 48. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a timepiece having a rotating bezel for turning a crown.

Conventionally, a timepiece having a rotating bezel for turning a crown is known (for example, Patent Documents 1 and 2). This type of timepiece is configured such that a crown for rotating the rotating bezel rotates by providing external teeth on the crown and by providing internal teeth that mesh with the external teeth on the rotating bezel. As a result, the time and date can be corrected by turning the rotating bezel.
Japanese Utility Model Publication No. 3-130589 US Pat. No. 6,010,241

  However, with the conventional configuration, there is a problem that the operation of the crown becomes heavy because the rotating bezel always rotates when the crown is rotated. For this reason, it was a structure in which the crown could not be operated in practice. Also, if the rotating bezel turns unexpectedly due to an unexpected external force, the external force is always transmitted to the driving car in the watch movement via the crown, which impairs the durability of the driving car crown packing. There was a risk of it.

  The present invention has been made in view of the above-described circumstances, and provides a timepiece with a rotating bezel in which the crown can be operated with a light operating force and the crown does not rotate even if the rotating bezel rotates freely. The purpose is to do.

In order to solve the above-described problems, the present invention provides a timepiece having a rotation bezel in a timepiece case and a rotation transmission mechanism that rotates a crown in conjunction with the rotation of the rotation bezel, and the rotation bezel is attached to the timepiece case. And a biasing means for biasing the rotating bezel in a direction away from the crown, and when the rotating bezel is pushed down against the biasing force of the biasing means, It is characterized by enabling rotation transmission by a rotation transmission mechanism.
According to the present invention, the rotary bezel is provided so as to be movable in the thickness direction of the watch case, and the biasing means for biasing the rotary bezel in the direction away from the crown is provided, which resists the biasing force of the biasing means. When the rotating bezel is pushed down, rotation transmission by the rotation transmitting mechanism is possible, so the rotating bezel is held away from the rotating bezel by the urging means, and the crown can be operated with a light operating force. In addition, it is possible to prevent the crown from rotating even if the rotating bezel rotates freely.

  In the above invention, it is preferable that the rotation transmission mechanism is constituted by gears respectively provided on the rotating bezel and the crown or on a winding stem in which the rotating bezel and the crown are connected. The biasing means includes a pin that is provided on the rotating bezel and is movable in the thickness direction of the watch case, and a biasing member that presses the pin against the watch case. In the region where the pin is pressed, a plurality of recesses into which the pin fits each time the rotating bezel rotates a predetermined angle may be provided. In this way, by providing the watch case with a plurality of recesses into which the pin fits each time the rotating bezel rotates by a predetermined angle, the latch mechanism of the rotating bezel can be easily configured.

  The urging means is a member that is provided on the watch case and pushes up the rotating bezel. The rotating bezel is moved to a region where the urging member is pressed against the rotating bezel every time the rotating bezel rotates by a predetermined angle. You may comprise so that the several recessed part which the said urging | biasing member fits may be provided. In this case as well, the latch mechanism of the rotating bezel can be configured simply.

  Further, a stepped portion may be provided on the inner peripheral side of the upper surface of the rotating bezel, and a ring-shaped fixed bezel fixed to the watch case may be disposed on the stepped portion. In addition, a step portion is provided on the inner peripheral side of the upper surface of the rotating bezel, and a second rotating bezel that is rotatably held by the watch case and the second rotating bezel are provided on the step portion at predetermined rotation angles. A latch mechanism for latching may be arranged. In this way, by arranging a fixed bezel or the like on the step portion of the rotating bezel, it is possible to suppress an increase in the size of the timepiece.

  The present invention is provided with a rotating bezel movably in the thickness direction of the watch case, and provided with an urging means for urging the rotating bezel away from the crown, and rotates against the urging force of the urging means. When the bezel is pushed down, the rotation transmission mechanism can transmit the rotation from the rotating bezel to the crown, so the crown can be operated with a light operating force, and the crown can be rotated freely. Can be prevented from turning.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(1) First Embodiment FIG. 1 is a view showing an appearance of a wristwatch 10 showing an example of a timepiece with a rotating bezel of the present invention, and FIG. 2 is a cross-sectional view of the wristwatch 10. The wristwatch 10 includes a watch body 11 and a watch band 12 connected to the watch body 11. The watch body 11 includes a watch case 13, which is also referred to as a case, and is made of a copper-based alloy such as stainless steel, brass, or white, or a metal material or a resin material such as a noble metal such as titanium, gold, or silver. The watch movement 15 is accommodated.
A watch dial 14 and a windshield glass 18 (FIG. 2) covering the watch dial 14 are attached to the watch case 13, and a ring-shaped rotating bezel 16 is attached around the windshield 18. ing. Further, a back cover 17 (FIG. 2) is attached to the back side of the watch case 13, and a packing is provided between the watch case 13 and the back cover 17 in order to improve sealing and waterproofing as required. A sealing material such as is arranged.

The timepiece movement 15 uses a mechanical type that rolls up a built-in spring and rotates and drives the hour wheel 20, second wheel 21, and fourth wheel 22 by a force stored in the spring, or uses a quartz oscillator for time adjustment. Even with a calendar display mechanism that displays a calendar (year, month, day, day of the week, etc.) to which a known movement such as a quartz type that rotates and drives each of the cars 20, 21, 22 by a stepping motor or the like is applied. Good.
The hour wheel 20, the second wheel 21 and the fourth wheel 22 pass through the central hole 19 of the timepiece dial 14 and extend above the timepiece dial 14. An hour hand 23 is attached to the hour wheel 20, a minute hand 24 is attached to the second wheel 21, and a second hand 25 is attached to the fourth wheel 22. Note that FIG. 2 shows a case where these time display hands 23, 24, and 25 are at the 3 o'clock position.

The timepiece movement 15 has a winding stem 27, and a shaft portion 32 of a crown 30 is connected to the winding stem 27 through the hole 31 of the timepiece case 13. A packing 33 is attached to the shaft portion 32, and the packing 33 prevents dust, moisture, and the like from entering from the gap between the crown 30 and the hole 31.
By rotating the crown 30, when the crown 30 is at the 0-step pull position (α position in FIG. 2), for example, the mainspring in the watch movement 15 can be wound up by the crown 30. When the crown 30 is at the one-step pull position (β position in FIG. 2), the time adjustment operation can be performed by the crown 30. When the timepiece movement 15 includes a calendar display mechanism, the crown 30 is configured to be movable to a two-stage pull position, and the calendar can be corrected by the crown 30 at the two-stage pull position.

The rotating bezel 16 is configured integrally with a ring-shaped bezel portion 16A located around the windshield 18 and a pin holding portion 16B disposed at a distance below the bezel portion 16A in the drawing. Yes. The pin holding portion 16B is formed with an annular convex portion 40 projecting inward of the watch case 13, and the annular convex portion 40 abuts on the watch case 13 so that the rotating bezel 16 can be rotated and the watch case 13 is rotatable. A guide surface 41 is provided for guiding in a movable manner in the thickness direction (Y direction in the figure).
Further, an annular convex portion (regulating portion) 42 that protrudes to the outer peripheral side is formed above the guide surface 41 in the figure, and the convex portion 42 prevents the rotating bezel 16 from being detached from the watch case 13. ing. In this way, the rotating bezel 16 is held with respect to the watch case 13 so as to be rotatable and movable in the thickness direction (Y direction). In addition, a packing 43 is disposed between the pin holding portion 16B and the watch case 13 so that dust, moisture and the like do not enter the watch case 13.

Through holes 45 are formed in the pin holding portion 16B at equal angular intervals when viewed from the front side of the watch, and the pins 46 are inserted into the through holes 45.
The pin 46 is provided with a retaining pin 47 so as not to fall out from the through hole 45, and a spring (biasing member) 48 is disposed between the head of the pin 46 and the pin holding portion 16B. That is, the rotating bezel 16 is provided with a pin 46 that is movable in the thickness direction of the watch case 13, and the pin 46 is pressed against the watch case 13 by the spring 48. For this reason, the rotating bezel 16 is pushed up by the pin 46.

  The watch case 13 has a plurality of recesses 49 formed at predetermined intervals on the movement locus of the pin 46 when the rotating bezel 16 is rotated. For this reason, every time the rotating bezel 16 rotates by a predetermined angle, the pin 46 fits into the recess 49, and the rotating bezel 16 is locked at that position. As a result, a latch mechanism that locks the rotating bezel 16 in units of a predetermined angle is simply configured.

In the wristwatch 10, a gear 50 is provided on the shaft portion 32 of the crown 30, and a rack (gear) 60 is provided on a surface 51 facing the gear 50 of the rotating bezel 16. The gears 50 and 60 (rotation transmission mechanism) are formed in a gear shape that is in a mutually separated position when the rotating bezel 16 is located on the front side of the watch and meshes with each other when the rotating bezel 16 is moved to the back side of the watch. Has been.
In this embodiment, since the rotating bezel 16 is urged away from the crown 30, when the pressing force is not applied to the rotating bezel 16, the gears 50 and 60 are in a separated position. On the other hand, when the pressing force F is applied to the rotating bezel 16 and pushed down, the gears 50 and 60 are engaged as shown in FIG. When the gears 50 and 60 are engaged with each other, the rotation of the rotating bezel 16 is transmitted to the crown 30 via a rotation transmission mechanism including the gears 50 and 60, and the crown 30 rotates integrally with the rotating bezel 16.

By the way, when this type of rotating bezel is rotated, the operator operates while pressing the rotating bezel from the front side of the wristwatch toward the watch case, so that a pressing force is applied to the rotating bezel to some extent. In this embodiment, when the pressing force (F) of this level acts on the rotating bezel 16, the spring 48 contracts, and the gear 50 of the rotating bezel 16 and the gear 50 of the crown 30 engage (FIG. 3). Accordingly, if the rotating bezel 16 is operated in substantially the same manner as the conventional rotating bezel, the crown 30 and the winding stem 32 can be rotated according to the rotation of the rotating bezel 16.
Thus, by turning the winding stem 32 with the rotating bezel 16, the crown can be operated with a smaller operating force than when the crown 30 is picked and turned, and even an elderly person can easily push the crown. The operation can be performed.

  Further, during normal times (except when the rotating bezel is operated), the gear 48 of the rotating bezel 16 and the gear 50 of the crown 30 are held away from each other by the spring 48 (FIG. 2). Even if it rotates freely, the crown 30 and the winding stem 32 do not rotate freely. For this reason, the driving gear 15 and the packing 33 in the watch movement 15 are not subjected to a load due to an unexpected external force, and the watch movement 15 or the watch movement 15 or The durability of the packing 33 can be improved.

Further, when the crown 30 is picked and rotated, the gear 60 and the gear 50 are separated from each other by the spring 48, so that the crown is operated as compared with a conventional timepiece in which the crown and the rotating bezel are always rotated integrally. Since there is no need to turn the rotating bezel at this time, the crown can be operated with a light operating force.
Further, in the present embodiment, a pin 46 that is movable in the thickness direction of the watch case 13 is provided on the rotating bezel 16, and the pin 46 is pressed against the watch case 13 by a spring 48, and the pin 46 of the watch case 13 is Since the concave portions 49 into which the pins 46 fit are provided at predetermined intervals in the area where they are pressed, the pins 46 and the springs 48 function as urging means for pushing up the rotating bezel 16 and also serve as a latch mechanism for the rotating bezel 16. Thus, the number of parts can be reduced and the wristwatch 10 can be downsized.

(2) Second Embodiment A wristwatch 102 according to the second embodiment is different from the wristwatch 10 according to the first embodiment except for the point that a fixed bezel 70 is provided. For this reason, hereinafter, common parts are denoted by the same reference numerals, and different points will be described.
FIG. 4 is a front view of the wristwatch 102 according to the second embodiment, and FIG. 5 is a cross-sectional view of the wristwatch 102. As shown in FIG. 4, the watch case 13 of the wristwatch 102 is provided with a ring-shaped fixed bezel 70 around the windshield 18. The fixed bezel 70 is engraved with characters and scales of 1 to 12 at equal intervals, and the time indicated by the hour hand 23 is designed to be easily discriminated by these characters.

As shown in FIG. 5, the rotating bezel 161 of the wristwatch 102 is provided with a recessed portion (step portion) 71 on the inner peripheral side of the upper surface.
The fixed bezel 70 has a female screw 72 formed on the inner periphery thereof, and the female screw 72 and the male screw 73 of the timepiece case 13 are screwed together, whereby the fixed bezel 70 is fixed to the concave portion 71 with a slight gap. .

  By the way, it is preferable that this type of wristwatch 102 minimizes the increase in size and increase in thickness of the outer periphery thereof. In the present embodiment, the concave portion 71 is provided on the inner peripheral side of the upper surface of the rotating bezel 161, and the fixed bezel 70 is provided so as to fit into the concave portion 71. In addition to the effects of the first embodiment, The outer peripheral shape and thickness equivalent to those of the wristwatch 10 according to the embodiment can be obtained.

Further, since the fixed bezel 70 can be disposed in the immediate vicinity of the windshield 18, the relative position between the scale of the timepiece dial plate 14 and the time display hands 23, 24, 25 and the characters of the fixed bezel 70 can be close, and the time is easy to see. A calm design is possible. A plurality of recesses 75 are provided at predetermined intervals on the movement locus of the pin 46 on the back surface of the fixed bezel 70, and the tip of the pin 46 is fitted into the recess 75.
That is, every time the rotating bezel 161 is rotated by a predetermined angle, the pin 46 fits into the recess 73 and the rotating bezel 161 is temporarily locked. As a result, a latch mechanism that locks the rotating bezel 161 in a predetermined angle unit is simply configured.
Instead of the recess 75, the watch case 13 may be provided with a recess 49 as in the first embodiment.

(3) Third Embodiment A wristwatch 103 according to a third embodiment is different from the wristwatch 102 according to the second embodiment except for the point that a second rotating bezel 80 is provided. For this reason, hereinafter, common parts are denoted by the same reference numerals, and different points will be described.
FIG. 6 is a front view of a wrist watch 103 according to the third embodiment, and FIG. 7 is a cross-sectional view of the wrist watch 103. As shown in FIG. 6, the watch case 13 of the wristwatch 103 is provided with a ring-shaped rotating bezel 80 around the windshield 18. As shown in FIG. 7, the rotating bezel 161 of the wristwatch 102 is provided with a recess (a stepped portion) 71 on the inner peripheral side of the upper surface, and the stepped portion 71 holds a second rotating bezel 80. A holding member 81 is provided.

The bezel holding member 81 is fixed to the watch case 13 with a screw and has a recess 71A on the outer peripheral side of the upper surface. The annular protrusion 40A included in the second rotating bezel 80 abuts against the wall surface of the recess 71A. The guide surface 41A that rotatably guides the second rotating bezel 80 and the convex portion (regulating portion) 42A that engages with the annular convex portion 40A and prevents the second rotating bezel 80 from coming off are formed. Yes. Further, a packing 43A is disposed between the bezel holding member 81 and the second rotating bezel 80 so that dust, moisture and the like do not enter the inside of the watch case 13.
Further, click springs 85 are fixed to the bezel holding member 81 at predetermined angular intervals at positions facing the back surface of the second rotating bezel 80. The click spring 85 urges the second rotating bezel 80 upward, and temporarily engages the second rotating bezel 80 when fitted in the recesses 70A provided at equiangular intervals on the back surface of the second rotating bezel 80. Thus, a latch mechanism for temporarily locking the second rotating bezel 80 in a predetermined angle unit is configured.

  Thus, in this embodiment, the recessed part 71 is provided in the upper surface inner peripheral side of the rotation bezel 161, The 2nd rotation bezel 80 and this 2nd rotation bezel are made into this recessed part 71 for every predetermined rotation angle. By arranging the latch mechanism for latching, in addition to the effect of the first embodiment, the enlargement of the outer peripheral shape of the wristwatch 103 can be suppressed even if two rotating bezels are arranged. In addition, since the second rotating bezel 80 can be disposed in the immediate vicinity of the windshield 18, the second rotating bezel 80 is provided with predetermined numbers, letters, etc., and the second rotating bezel 80 is used as a calculation rule. When doing, it can be made easy to use as a calculation rule.

  Each of the above-described embodiments is merely one aspect of the present invention, and can be arbitrarily modified within the scope of the present invention. For example, in each of the above-described embodiments, the case where the rotating bezel 16 is pushed up by the pin 46 provided on the rotating bezel 16 is illustrated. However, as shown in FIG. Further, a pin 46A that is movable in the thickness direction of the watch case 13 is provided, and a spring 48A (biasing member) that presses the pin 46A against the rotating bezel 16 may be provided to push up the rotating bezel 16. . In this case, the latch mechanism of the rotating bezel 16 can be simply configured by providing a plurality of recesses 49A into which the pin 46A fits each time the rotating bezel 16 rotates by a predetermined angle in the region where the pin 46A of the rotating bezel 16 contacts. Can do.

  Further, as shown in FIG. 8B, a leaf spring (biasing member) 91 is applied instead of the pins 46, 46A and the spring 48, and as shown in FIG. 8C, an elastic member having elasticity other than the spring ( (Biasing member) 92 may be applied. In each of the above embodiments, the case where the rotation transmission mechanism that rotates the crown in conjunction with the rotation of the rotating bezel is illustrated by providing a gear on the rotating bezel crown, but the rotating bezel and the winding stem are illustrated. You may comprise and provide a gearwheel.

It is a figure which shows the external appearance of the wristwatch which concerns on 1st Embodiment. It is sectional drawing of a wristwatch. It is sectional drawing of a wristwatch. It is a figure which shows the external appearance of the wristwatch which concerns on 2nd Embodiment. It is sectional drawing of a wristwatch. It is a figure which shows the external appearance of the wristwatch which concerns on 3rd Embodiment. It is sectional drawing of a wristwatch. It is a figure where it uses for description of a modification.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10, 102, 103 ... Wristwatch (clock with rotating bezel), 13 ... Clock case, 14 ... Clock dial, 16, 80, 161 ... Rotating bezel, 18 ... Windshield, 30 ... Crown, 32 ... Winding stem, 46 , 46A ... pin, 48, 48A ... spring (biasing member), 50, 60 ... gear (rotation transmission mechanism), 70 ... fixed bezel, 91 ... leaf spring (biasing member), 92 ... elastic member (biasing member) ).

Claims (7)

In a watch with a rotating bezel, which has a rotating bezel on the watch case and a rotation transmission mechanism that rotates the crown in conjunction with the rotation of the rotating bezel.
The rotating bezel is provided movably in the thickness direction of the watch case, and includes an urging means for urging the rotating bezel away from the crown,
A timepiece with a rotating bezel, wherein when the rotating bezel is pushed down against the urging force of the urging means, the rotation can be transmitted by the rotation transmitting mechanism.   The said rotation transmission mechanism is the gearwheel each provided in the said rotation bezel and the said crown, or the winding stem with which the said rotation bezel and the said crown were connected. Clock with rotating bezel. The biasing means includes a pin that is provided on the rotating bezel and is movable in the thickness direction of the watch case, and a biasing member that presses the pin against the watch case.
3. The rotating bezel according to claim 1 or 2, wherein the watch case is provided with a plurality of recesses into which the pin fits each time the rotating bezel rotates by a predetermined angle in an area where the pin is pressed. Watch with clock. The biasing means includes a pin that is provided in the watch case and is movable in the thickness direction of the watch case, and a biasing member that presses the pin against the rotating bezel.
The rotating bezel according to claim 1 or 2, wherein the rotating bezel is provided with a plurality of recesses into which the pin fits each time the rotating bezel rotates by a predetermined angle in an area where the pin is pressed. Watch with clock. The urging means is a member that is provided on the watch case and pushes up the rotating bezel,
3. The rotating bezel is provided with a plurality of recesses into which the urging member fits each time the rotating bezel rotates by a predetermined angle in a region where the urging member presses. Clock with rotating bezel as described.   The step part is provided in the upper surface inner peripheral side of the said rotation bezel, The ring-shaped fixed bezel fixed to the said watch case is arrange | positioned in this step part, The Claim 1 thru | or 5 characterized by the above-mentioned. Clock with rotating bezel.   A step portion is provided on the inner peripheral side of the upper surface of the rotating bezel, and a second rotating bezel that is rotatably held by the watch case and the second rotating bezel are latched at predetermined rotating angles at the step portion. 6. A timepiece with a rotating bezel according to claim 1, further comprising a latch mechanism.

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