JP3620444B2 - clock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a timepiece including a ring-shaped rotating bezel that is rotatably provided in a case so that an elapsed time from a set time point can be easily grasped.
[0002]
[Background]
Conventionally, there is a timepiece in which a ring-shaped rotating bezel is rotatably provided around a time display unit such as a dial for displaying the current time.
If such a rotating bezel is provided, the elapsed time from the set time can be easily grasped, so it is adopted in diver watches used by divers who grasp the amount of air remaining in the cylinder based on the diving time. Yes.
There is also known a timepiece in which an index indicating the time from 1 o'clock to 12 o'clock is provided on the rotating bezel and the current time in various parts of the world can be grasped by rotating the rotating bezel according to the time difference.
[0003]
Japanese Utility Model Publication No. 5-92779 discloses an example of a rotating bezel. The timepiece disclosed in this publication includes a body that covers the periphery of the movement of the timepiece, and a glass fixing ring made of glass that covers the dial. Among these, the glass fixing ring is provided with a flange portion protruding from the side surface. On the other hand, the rotating bezel is provided with a protrusion that is locked to the flange portion of the glass fixing ring.
As a result, the rotating bezel can be rotated along the periphery of the cylinder while being prevented from being detached from the cylinder.
[0004]
In addition, a stepped portion is provided on the outer periphery of the barrel so that the back side protrudes in the radial direction from the front side. This stepped portion is provided with a middle step portion facing the edge on the back side of the rotating bezel.
A click groove having a large number of concave and convex locking teeth formed on the bottom surface is provided in the middle step portion along the periphery of the trunk.
The rotating bezel is provided with a latching tooth of the click groove and a leaf spring extending obliquely toward the side surface.
[0005]
Thereby, the reverse rotation prevention mechanism and the click operation mechanism of the rotating bezel are formed. That is, when trying to rotate the rotating bezel in the clockwise direction, the tip of the leaf spring comes into contact with the locking teeth of the click groove, so that the rotating bezel is not rotated in the same direction, while the rotating bezel is counterclockwise. When rotating to the left, the leaf spring is pushed by the locking teeth of the click groove and deforms to allow rotation of the rotating bezel, so that the rotating bezel can be rotated in the same direction.
In addition, the leaf spring that has been pushed and deformed by the locking teeth rotates again by a predetermined angle, and again enters between the locking teeth of the click groove. Therefore, the position is determined for each predetermined rotation angle, and a moderate click operation can be performed. It is like that.
[0006]
Further, an elastic packing is interposed between the glass fixing ring and the rotating bezel. By this packing, when the rotary bezel is rotated, the radial bezel and the unevenness of the operating torque are eliminated.
[0007]
When such a rotating bezel is provided on the timepiece, the click groove and the leaf spring overlap in the thickness direction of the timepiece, and thus the thickness dimension of the timepiece tends to increase. For this reason, Japanese Patent Application Laid-Open No. 6-94845 discloses an example of a rotating bezel in which the thickness dimension of the timepiece is not easily increased even if a rotating bezel is provided.
In other words, the watch body is provided with a hook portion protruding from the side surface thereof, as in the case of the watch described above. On the other hand, the rotating bezel is provided with a protrusion that is locked to the flange portion of the glass fixing ring. As a result, the rotating bezel can be rotated along the periphery of the cylinder while being prevented from being detached from the cylinder.
[0008]
In addition, a large number of serrated irregularities are formed on the inner periphery of the rotating bezel. On the other hand, a ring-shaped elastic member having an engaging protrusion protruding toward the concavo-convex portion of the rotating bezel is fixed to the case body of the timepiece with a screw.
As a result, when the rotation bezel is operated to rotate in the clockwise direction, the engagement protrusion of the elastic member is locked to the concavo-convex portion and the rotation bezel is not rotated in the same direction. On the other hand, when the rotating bezel is rotated counterclockwise, the engaging protrusion is pushed by the concavo-convex portion and deformed inward to allow the rotating bezel to rotate, so that the rotating bezel can be rotated in the same direction. It is like that.
[0009]
Here, since the elastic member fixed to the case and the concavo-convex portion of the rotating bezel are arranged side by side in the radial direction, the thickness dimension of the watch can be suppressed, and even if a rotating bezel is provided, the watch can be thinned. ing.
[0010]
[Problems to be solved by the invention]
In such a rotating bezel, the elastic member fixed to the barrel and the uneven portion of the rotating bezel are arranged side by side in the radial direction, and the elastic member has a width of a portion fixed to the barrel in order to form a screw hole. Further, since the engaging protrusion protrudes in the radial direction, there is a problem that the diameter of the watch tends to increase.
[0011]
An object of the present invention is to provide a timepiece that can be reduced in thickness and diameter even when a rotating bezel is provided.
[0012]
[Means for Solving the Problems]
The present invention is a timepiece including a ring-shaped rotating bezel that is arranged around a display unit that displays time and is rotatably provided on a case, and is substantially between the rotating bezel and the case. A C-shaped end ring made of an elastic body is disposed, and one of the rotating bezel and the case has a plurality of engaging projections arranged along the rotation direction of the rotating bezel, One end portion of the end ring is a locking portion that is locked to the other of the rotating bezel and the case, and the other end portion of the end ring has a tip that abuts against one side surface of the engaging convex portion. With claws The engaging convex portion is a serrated locking tooth integrally formed with the case, the end ring is locked at the one end portion with the rotating bezel, and the case has the rotating A rising portion having an outer peripheral surface facing the inner peripheral surface of the bezel is provided, and a plurality of the locking teeth are arranged on the outer peripheral surface of the rising portion, and the proximal end side is more proximal than the locking teeth of the outer peripheral surface. The portion is provided with a first groove for receiving the end ring, and the inner surface of the rotating bezel is provided with a second groove at a position corresponding to the first groove. An end ring is disposed across both the first groove and the second groove It is characterized by that.
In the present invention, an end ring is interposed between the rotating bezel and the case so that one end portion of the end ring is locked to the rotating bezel or the case. This eliminates the need for forming a screw hole in the end ring.
At this time, there is no need to form a screw hole in the end ring, and there is no generation of chips due to the processing, so that the chips will not scratch the exterior surface coating, etc. The aesthetics of the watch will be maintained until the work is completed.
Further, since the other end portion of the end ring is an engaging claw that abuts one side surface of the engaging convex portion, there is no need to provide a protrusion protruding in the radial direction.
As a result, a bent end of a thin rod-shaped member can be used as the end ring, and if the thickness direction and the radial cross-sectional dimension of the end ring are reduced, the projecting dimension of the engaging convex portion is also reduced. Even if the bezel is provided with a reverse rotation prevention mechanism and a click operation mechanism, the thickness dimension and diameter of the timepiece are not increased, and both a reduction in thickness and a reduction in diameter can be achieved.
And since a large force is not required to attach the rotating bezel to the case, the deformation stress generated in the case is reduced, the deformation of the movement housed inside the case is suppressed, and problems such as stopping the movement of the needle are prevented. Is done.
[0013]
By the way, the rotating bezel Depending on the size and shape, the portion where the engagement protrusion can be provided is limited. For example, when the thickness is small, it is difficult to provide the engagement protrusion on the inner peripheral surface. On the other hand, if the case is provided with an engaging convex portion as described above, the case has more portions than the rotating bezel where the engaging convex portion can be provided. It is possible to provide an engaging convex portion at the portion, and thereby, even if the engaging convex portion is a serrated locking tooth, the locking tooth can be easily processed.
In order to lock the end ring on the rotating bezel, for example, the end of the end ring is bent, and a hole into which the bent end is inserted is provided on the rotating bezel. As a result, the rotating bezel can be easily processed.
[0014]
And the end ring Is housed in the first groove and the second groove, the gap between the case and the rotating bezel can be minimized even if an end ring is interposed between the case and the rotating bezel. The appearance of the watch can be improved.
In addition, since the end ring arranged across both the first groove and the second groove forms a retaining structure that prevents the rotating bezel from being removed from the case, a retaining structure is separately provided. There is no need, and the case and the rotating bezel can be easily processed.
Furthermore, since the rotating bezel is prevented from coming off by an end ring which is an elastic body, if the rotating bezel is pressed against the case with the end ring fitted in the second groove, the end ring is deformed. Over the locking teeth and the like, it fits into the first groove, whereby the rotating bezel can be easily attached to the case, so that the timepiece can be assembled easily.
On the other hand, if the tip of the disassembling tool is inserted into the gap between the case and the rotating bezel, and the tool is squeezed in this state, the end ring is deformed, disengages from the first groove, gets over the locking teeth, etc. and is released. As a result, the rotating bezel can be easily removed from the case, so that the disassembling work can be easily performed.
[0015]
In such a timepiece, the inner peripheral surface of the rotating bezel is engaged with the first recess serving as the relief of the engaging claw deformed by the end ring and the locking portion of the end ring. It is preferable that a second recess is provided.
If such a first recess is provided, it is possible to set a large displacement when the engaging claw of the end ring is deformed, and the reverse rotation that operates reliably even if a thin end ring is adopted. A prevention mechanism and a click operation mechanism can be obtained.
In addition, since the second recess for locking the locking portion of the end ring is housed in the first groove and the second groove, the end ring is interposed between the case and the rotating bezel. Even if the watch is interposed, the distance between the case and the rotating bezel can be minimized, and the appearance of the watch can be improved.
In addition, since the locking portion of the end ring is locked to the second recess, if the second recess is made continuous with the second groove, the end ring can be fitted into the second groove. If the end ring is moved along the second groove in the fitted state, the locking portion can be easily locked to the second recess, and the timepiece can be assembled easily. .
[0016]
Here, in the above-described timepiece, it is desirable that the end ring is made of a shape memory alloy.
If such a shape memory alloy-made end ring is adopted, even if the end ring is plastically deformed into a shape accommodated only in the second recess, the original state is restored by heating or the like. The end ring that is shaped to be stored only in the recess is stored in the second recess. In this state, after the rotating bezel is attached to the case, the end ring is returned to its original state by heating or the like. The ring spans both the first groove and the second groove, and the retaining structure of the rotating bezel is automatically formed, so that the timepiece can be assembled more easily.
Moreover, when disassembling or assembling for maintenance work or repair, even if the end ring is plastically deformed, it can be easily returned to its original state and used again. Even if it is repeated many times, the consumption of the end ring is reduced.
[0017]
Furthermore, it is preferable that 60 of the locking teeth are formed along the rotation direction of the rotating bezel.
In this way, every time the rotating bezel is rotated 6 degrees, the engaging claws are fitted into the valleys between the engaging projections, and the rotational angle position of the rotating bezel is determined, so that the time can be set in increments of minutes. Thus, a function as a 60-minute timer is added to the clock.
[0018]
In the timepiece as described above, the end ring is preferably formed in a polygonal shape.
If it does in this way, the end ring arranged ranging over both the 1st slot and the 2nd slot can be manufactured only by bending processing of a rod-shaped member, and it will become easy to manufacture an end ring. .
[0019]
Furthermore, the end ring is preferably formed from a wire having a circular cross-sectional shape.
If the end ring is formed from the wire as described above, an extremely long coil wound as a base material can be adopted, and such a wire is cut into a predetermined length to obtain a predetermined length. By bending the wire, the end ring can be continuously manufactured, and the manufacture of the end ring can be easily automated.
[0020]
Further, the end ring is bent at the other end portion, and a portion on the tip side of the bent portion is used as the engaging claw, and the length of the engaging claw is set to the resonance frequency of the case. It is desirable that the dimensions are appropriate.
In this way, the click sound generated when one click on the rotating bezel is increased, the operation can be confirmed with the ear, and the time setting can be accurately set even in the dark by simply applying phosphorescent paint to the time index and the hands. You can do it.
[0021]
Furthermore, in the timepiece as described above, in order to facilitate the insertion of the disassembling tool into the gap between the case and the rotating bezel, a notch is formed in at least one peripheral portion of the case and the rotating bezel. It is preferable.
In this way, since the tip of the disassembling tool can be easily inserted into the gap between the case and the rotating bezel, disassembling work can be easily performed from this point.
[0022]
In the timepiece as described above, it is desirable that a film made of a self-lubricating material is formed on the case, the rotating bezel, and the end ring that are in contact with each other.
In this way, the coating made of a self-lubricating material enables the rotating operation of the rotating bezel to be performed smoothly, and the wear resistance of the sliding portion is improved, so that the durability of the rotating bezel is improved. .
[0023]
Furthermore, in the above-described timepiece, it is preferable that the glass covering the display unit is fixed to the case with an adhesive.
Here, when a glass is inserted between the glass and the case and the glass is press-fitted into the case and fixed, it is necessary to deepen the fitting of the glass into the case. The radial dimension increases with the thickness, and the thickness dimension of the watch increases with the securing of the fitting depth.
Therefore, if the glass is fixed to the case with an adhesive as described above, no packing is required, and it is not necessary to secure the fitting depth. From this point, the watch can be made thinner and smaller in diameter. become.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a timepiece 1 according to the present embodiment. 1 and 2, the timepiece 1 is a diver watch used by divers diving in the sea or the like. The timepiece 1 includes a circular dial 2, an hour hand 21, a minute hand 22, a second hand 23, a movement (not shown) for driving these hands 21 to 23, and a movement as a display unit for displaying time. A case 4 housed inside, a ring-shaped rotating bezel 5 disposed around the dial 2 and rotatably provided on the case 4, a mounting band 6, and a crown for time setting and the like 7 is provided.
[0025]
Here, the dial 2 is provided with a square index 24 and a round index 25 indicating each time from 1 o'clock to 12 o'clock. A phosphorescent paint is applied to the indexes 24 and 25 and the hands 21 and 22.
In addition, a notch 8 is partially formed in the peripheral portion of the rotating bezel 5 so that a disassembling tool can be easily inserted into the gap between the case 4 and the rotating bezel 5 during disassembly.
[0026]
As shown in FIG. 3, the case 4 includes an annular body 41 that surrounds the periphery of the dial 2, a back cover 42 that covers the back side of the dial 2, and a glass 43 that covers the front side of the dial 2. It has become a thing.
Here, a glass 43 is fitted into the annular body 41 of the case 4 from the front side and fixed with an adhesive 44.
On the other hand, a back cover 42 on the back side of the body 41 is provided with a protrusion 45 formed along the inner peripheral surface of the body 41. As shown in FIG. 4, a convex portion 47 that is engaged with a concave portion 46 formed on the inner peripheral surface of the body 41 is partially provided on the outer peripheral surface of the protruding portion 45. Thus, when the back cover 42 is press-fitted into the body 41, the convex portion 47 of the back cover 42 is locked to the concave portion 46 of the body 41 so that the back cover 42 is attached to the body 41.
Moreover, the notch part 9 is partially formed in the peripheral part of the back cover 42 so that the tool for decomposition | disassembly can be easily inserted in the clearance gap between the trunk | drum 41 and the back cover 42 at the time of decomposition | disassembly. Thereby, the back cover 42 can be removed by a disassembling tool. A packing 48 as a waterproof member is interposed between the case 41 and the back cover 42 in order to ensure the waterproofness of the case 4.
[0027]
Returning to FIG. 3, a rising portion 50 having an outer peripheral surface 49 facing the inner peripheral surface 5 </ b> A of the rotating bezel 5 is integrally formed on the body 41 of the case 4. The rising portion 50, the rotating bezel 5, An end ring 70 formed of a wire having a circular cross section is interposed therebetween.
On the outer peripheral surface 49 of the rising portion 50, as shown in FIG. 5, 60 locking teeth 51 as engaging convex portions are arranged at every rotation angle of 6 degrees along the rotation direction of the rotating bezel 5. Has been. Each locking tooth 51 has a sawtooth shape integrally formed with the rising portion 50.
Further, a first groove 52 for accommodating the end ring 70 is provided in a portion of the outer peripheral surface 49 of the rising portion 50 closer to the base end side than the locking tooth 51.
On the other hand, a second groove 53 is provided on the inner peripheral surface 5 </ b> A of the rotating bezel 5 at a position corresponding to the first groove 52.
[0028]
As shown in FIG. 6, the end ring 70 is formed in a substantially C shape having an end portion by bending a wire made of an elastic body such as stainless steel, It has a polygonal planar shape having a straight line portion 72.
One end portion of the end ring 70 is bent to the back side of the case 4 as shown in FIG. 3 so as to be locked to the rotating bezel 5, and the bent tip side is a locking portion 73. .
As shown in FIG. 4, a crank portion 74 that is bent in a crank shape is provided at the other end portion of the end ring 70. A portion of the end ring 70 on the front end side relative to the crank portion 74 is gently bent inward in the middle, and the bent portion is an engaging claw 75.
The engaging claw 75 has a length L corresponding to the resonance frequency of the cavity inside the case 4.
[0029]
As shown in FIG. 7, the rotating bezel 5 is provided with a first recess 54 and a second recess 55 that are recessed from the inner peripheral surface 5 </ b> A.
Of these, the first recess 54 is connected to the first groove 52 and accommodates the crank portion 74 and the engaging claw 75 of the end ring 70, as shown in FIGS. It has become.
As shown in FIG. 3 and FIG. 8, the second recess 55 is for locking the locking portion 73 of the end ring 70.
[0030]
Here, if the rotating bezel 5 is to be rotated in the clockwise direction, the direction of the arrow R in FIG. 8, since the locking portion 73 is locked to the rotating bezel 5, the end ring 70 also attempts to rotate. Since the tip of the engaging claw 75 abuts against the side surface of the locking tooth 51, the clockwise rotation is prevented.
On the other hand, when the rotating bezel 5 is rotated counterclockwise, in the direction of the arrow L in FIG. 8, the engaging claw 75 is brought into contact with the locking teeth 51 by the rotation of the end ring 70 accompanying the rotation of the rotating bezel 5. It has come to be. And since the 1st recessed part becomes the space which becomes escape of the engaging claw 75 which deform | transforms, a deformation | transformation of the engaging claw 75 is accept | permitted and the rotation bezel 5 can rotate counterclockwise.
Further, when the engaging claw 75 rotates 6 degrees, it again enters the valley of the locking teeth 51, so that the position of the rotating bezel 5 is determined every time it is rotated 6 degrees, so that a click operation with moderation can be performed. Yes.
[0031]
Here, as shown in FIGS. 3 and 8, the end ring 70 is disposed across both the first groove 52 and the second groove 53. The end ring 70 serves as a retaining portion that prevents the rotating bezel 5 provided rotatably in the case 4 from being detached from the rising portion 50 of the case 4.
Further, the portions of the case 4, the rotating bezel 5 and the end ring 70 that contact each other, specifically, the outer peripheral surface 49 of the rising portion 50 of the case 4, and the middle step surface 56 that extends outward from the base portion of the outer peripheral surface 49, The inner peripheral surface 5A of the rotating bezel 5, the back surface 57 of the rotating bezel 5 facing the middle step surface 56 of the case 4, the entire surface of the end ring 70, etc. are made of polytetrafluoroethylene, which is a self-lubricating material. The film which becomes is formed. Thereby, the rotating operation of the rotating bezel 5 can be performed smoothly.
[0032]
According to the first embodiment as described above, the following effects can be obtained.
That is, the end ring 70 is interposed between the rotating bezel 5 and the case 4 so that the locking portion 73 provided at one end of the end ring 70 is locked to the second recess 55 of the rotating bezel 5. Therefore, the attachment of the end ring 70 can eliminate the need for a connector such as a screw or a screw hole through which the screw is inserted.
At this time, it is not necessary to form a screw hole in the end ring 70, and generation of chips by the processing is eliminated, so that the chips do not scratch the exterior surface coating or the like. The aesthetic appearance of the timepiece 1 can be maintained until the assembly work is completed.
Further, since the other end portion of the end ring 70 is an engaging claw 75 that abuts on one side surface of the locking tooth 51 on the case 4 side, a protrusion protruding in the radial direction can be eliminated.
As a result, the end ring 70 can be formed by bending a thin rod-like member, the thickness direction and radial direction cross-sectional dimensions of the end ring 70 are reduced, and the protruding dimension of the locking teeth 51 is also reduced. Even if the rotation bezel 5 is provided with the reverse rotation prevention mechanism and the click operation mechanism, the thickness and the diameter of the timepiece 1 are not increased, and both a reduction in thickness and a reduction in diameter can be realized.
In addition, since a large force is not required to attach the rotating bezel 5 to the case 4, the deformation stress generated in the case 4 is reduced, the deformation of the movement housed in the case 4 is suppressed, and there is a problem such as needle movement stop. Can be prevented.
[0033]
Further, the outer peripheral surface 49 of the rising portion 50 is provided with the locking teeth 51 on the case 4 side where the locking teeth 51 can be provided more than the rotating bezel 5 and the locking teeth 51 can be easily processed. Since the locking teeth 51 are formed, the locking teeth 51 can be easily processed even with the serrated locking teeth 51.
[0034]
Further, a first groove 52 is provided on the outer peripheral surface 49 of the rising portion 50 provided in the case 4, and the second groove is formed on the inner peripheral surface 5 </ b> A of the rotating bezel 5 according to the position of the first groove 52. 53, and the end ring 70 is accommodated in both the first groove 52 and the second groove 53 and disposed across both the grooves 52, 53. Even when the end ring 70 is interposed, the interval between the case 4 and the rotating bezel 5 can be minimized, and the appearance of the timepiece 1 can be improved.
In addition, since the end ring 70 disposed across both the first groove 52 and the second groove 53 serves as a retaining portion that prevents the rotating bezel 5 from being detached from the case 4, There is no need to provide a separate structure, and the case 4 and the rotating bezel 5 can be easily processed.
Furthermore, since the rotating bezel 5 is prevented from coming off by the end ring 70 which is an elastic body, if the rotation bezel 5 is pressed against the case 4 with the end ring 70 fitted in the second groove 53, the end The end ring 70 is deformed, gets over the locking teeth 51 and fits into the first groove 52, and the rotating bezel 5 can be easily attached to the case 4 so that the timepiece 1 can be easily assembled.
[0035]
Further, if the tip of the disassembling tool is inserted into the gap between the case 4 and the rotating bezel 5 and the tool is squeezed in this state, the end ring 70 is deformed and disengages from the first groove 52, overcoming the locking tooth 51 Since the end ring 70 is opened, the rotating bezel 5 can be easily removed from the case 4 and the notch 8 is formed in the peripheral portion of the rotating bezel 5, so that it is disassembled into the gap between the case 4 and the rotating bezel 5. The tip of the tool can be easily inserted, and the disassembly work can be easily performed.
[0036]
Further, since the first recess 54 is provided on the inner peripheral surface 5A of the rotating bezel 5 so as to escape the engaging claw 75 of the end ring 70, when the engaging claw 75 of the end ring 70 is deformed, its displacement Can be set large, and even when the thin end ring 70 is adopted, a reverse rotation prevention mechanism and a click operation mechanism that operate reliably can be realized.
Furthermore, since the second recess 55 for locking the locking portion 73 of the end ring 70 is provided on the inner peripheral surface 5A of the rotating bezel 5, and the second recess 55 is made continuous with the second groove 53, Even if the end ring 70 is fitted in the second groove 53, if the end ring 70 is moved along the second groove 53 in the fitted state, the locking portion 73 of the second recess 55 is fixed. The timepiece 1 can be easily assembled from this point as well.
[0037]
Further, since 60 locking teeth 51 are formed along the rotation direction of the rotating bezel 5, each time the rotating bezel 5 is rotated 6 degrees, the engaging claw 75 fits into the valley between the locking teeth 51. Since the rotational angle position of the rotating bezel 5 is determined, the time can be set in increments of minutes, and a function as a 60-minute timer can be added to the timepiece 1.
[0038]
Further, since the end ring 70 is formed in a polygonal shape, the end ring 70 that can be arranged across both the first groove 52 and the second groove 53 can be manufactured only by bending the rod-shaped member. The end ring 70 can be easily manufactured.
[0039]
Furthermore, since the end ring 70 is formed from a wire having a circular cross-sectional shape, an extremely long coil wound as a base material can be adopted, and such a wire is cut into a predetermined length, By bending the wire rod having a predetermined length, the end ring 70 can be continuously manufactured, and the manufacture of the end ring 70 can be easily automated.
[0040]
In addition, since the length of the engaging claw 75 of the end ring 70 is set to the dimension L corresponding to the resonance frequency of the cavity inside the case 4, the click sound generated when the rotating bezel 5 is clicked once is increased. Combined with the fact that the operation can be confirmed by the ear, the click operation of the rotating bezel 5 can be performed in every minute, and the luminous paint is applied to the indexes 24 and 25 and the hands 21 and 22. The time can be set accurately even in the dark.
[0041]
Further, since the coating made of polytetrafluoroethylene is formed on the case 4, the rotating bezel 5 and the end ring 70 that are in contact with each other, the rotating operation of the rotating bezel 5 can be performed smoothly, and the periphery of the rotating bezel 5 The wear resistance of the sliding portion is improved, and the durability of the rotating bezel 5 can be improved.
[0042]
Further, since the glass 43 is fixed to the case 4 with the adhesive 44, no packing is interposed between the glass 43 and the case 4 in order to fix the glass 43, and the radial direction is equal to the thickness of the packing. In addition, the fitting depth dimension that should be sufficiently secured when mounting with packing is also reduced. From this point, the watch 1 can be made thinner and smaller in diameter.
[0043]
Although the present invention has been described with reference to a preferred embodiment, the present invention is not limited to this embodiment, and various improvements and design changes can be made without departing from the scope of the present invention. .
For example, the number of engagement protrusions installed is The number is not limited to 60 and may be 120.
[0044]
Furthermore, the end ring is not limited to a polygonal plane shape, and may have an elliptical plane shape. The specific shape of the end ring can be appropriately set in practice, but the case side A shape that can be disposed across both the first groove and the second groove on the rotating bezel side is preferable.
[0045]
Further, the end ring is not limited to stainless steel but may be made of steel with a plated surface or a shape memory alloy and may be made of an elastic body.
At this time, if the end ring made of shape memory alloy is adopted, even if the end ring is plastically deformed into a shape accommodated only in the second recess, the original state is restored by heating or the like. If the end ring is stored in the recess, the end ring is stored in the second recess, and the rotating bezel is attached to the case in this state, and then the end ring is returned to its original state by heating or the like. Since the end ring extends over both the first groove and the second groove, the retaining structure of the rotating bezel is automatically formed, so that the timepiece can be assembled more easily.
Moreover, when disassembling or assembling for maintenance work or repair, even if the end ring is plastically deformed, it can be easily returned to its original state and used again. Even if it repeats many times, consumption of the end ring can be reduced.
[0046]
【The invention's effect】
As described above, according to the present invention, even when a timepiece is provided with a rotating bezel, both the thickness and the diameter of the timepiece can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a side view showing the embodiment.
FIG. 3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view of a portion different from FIG. 3 showing the embodiment. FIG.
FIG. 5 is a cross-sectional view taken along line aa of FIG. 3 showing a rising portion of the embodiment.
FIG. 6 is a plan view showing the end ring of the embodiment.
7 is a cross-sectional view taken along the line aa of FIG. 3 showing the rotating bezel of the embodiment. FIG.
8 is a cross-sectional view taken along line aa in FIG.
[Explanation of symbols]
1 clock
2 Dial as display
4 cases
5 Rotating bezel
8 Notch
5A Inner peripheral surface
43 glass
44 Adhesive
49 Outer surface
50 Rising part
51 Locking teeth as engaging projections
52 1st groove
53 Second groove
54 First recess
55 Second recess
73 Locking part
75 engaging claw

Claims (10)

A timepiece having a ring-shaped rotating bezel that is arranged around a display unit that displays time and is rotatably provided in a case,
Between the rotating bezel and the case, an end ring which is formed in a substantially C shape and is made of an elastic body is disposed, and one of the rotating bezel and the case is arranged along the rotation direction of the rotating bezel. A plurality of engaging convex portions are arranged, one end portion of the end ring is a locking portion that is locked to the other of the rotating bezel and the case, and the other end portion of the end ring has a tip. The engaging projection is an engaging claw that contacts one side surface of the engaging projection, the engaging projection is a serrated locking tooth integrally formed with the case, and the end ring has the one end portion. The case is locked to the rotating bezel, and the case is provided with a rising portion having an outer peripheral surface facing the inner peripheral surface of the rotating bezel, and a plurality of the locking teeth are arranged on the outer peripheral surface of the rising portion. , Than the locking teeth on the outer peripheral surface A first groove for storing the end ring is provided on the side portion, and a second groove is provided on the inner peripheral surface of the rotating bezel at a position corresponding to the first groove, The timepiece according to claim 1, wherein the end ring is disposed across both the first groove and the second groove . 2. The timepiece according to claim 1 , wherein an inner peripheral surface of the rotating bezel is provided with a first concave portion serving as a relief of the engaging claw deformed by the end ring and the locking portion of the end ring. A timepiece having a second recess for locking. 3. The timepiece according to claim 1 , wherein the end ring is made of a shape memory alloy. 4. The timepiece according to claim 1 , wherein 60 pieces of the locking teeth are formed along a rotation direction of the rotary bezel. 5. 5. The timepiece according to claim 1 , wherein the end ring is formed in a polygonal shape. 6. The timepiece according to claim 1 , wherein the end ring is formed of a wire having a circular cross section. 7. The timepiece according to claim 1 , wherein the end ring is bent at the other end portion, and a portion closer to a tip side than the bent portion is the engaging claw, A timepiece in which the length of the engaging claw is a dimension according to the resonance frequency of the case. The timepiece according to any one of claims 1 to 7 , wherein a peripheral portion of at least one of the case and the rotating bezel is provided in order to facilitate insertion of a disassembling tool into the gap between the case and the rotating bezel. A timepiece having a notch formed in the watch. 9. The timepiece according to claim 1 , wherein a coating made of a self-lubricating material is formed on the case, the rotating bezel, and the end ring in contact with each other. clock. The timepiece according to any one of claims 1 to 9 , wherein a glass covering the display portion is fixed to the case with an adhesive.

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