JP6798155B2 - clock - Google Patents

Description

The present invention relates to a watch.

Conventionally, in a wristwatch, a timepiece having a buffer structure is known in order to prevent the timepiece from being damaged by an impact (see, for example, Patent Document 1).
In the wristwatch of Patent Document 1, a lower cushioning member made of an elastic material is arranged between the watch module and the flat back cover.

Japanese Unexamined Patent Publication No. 2013-190419

However, in the wristwatch of Patent Document 1, since it is necessary to secure a space for arranging the lower cushioning member between the watch module and the back cover, the thickness of the entire watch as compared with the case where the lower cushioning member is not arranged. There is a problem that the size becomes large.

An object of the present invention is to provide a timepiece that can be made thinner while suppressing the occurrence of defects due to impact.

The watch of the present invention has a tubular case body, a metal back cover that closes one opening of the case body, a movement arranged inside the case body, and between the back cover and the movement. A recess is provided on the movement side of the back cover, and the spacer is arranged in the recess, and the thickness dimension of the spacer is larger than the depth dimension of the recess. It is characterized by that.

The case body and the back cover may be integrally formed or may be formed separately.
For example, when the watch falls and collides with the ground, the impact may cause the movement to move inside the case body toward the back cover.
Since the movement is equipped with parts that are fixed to the exterior parts, such as the winding stem, when the movement moves inside the case body toward the back cover, if the amount of movement increases, the force will be applied to the parts. This may cause problems. For example, in the case of winding stem, it may be pulled out from the movement.
According to the present invention, when the movement moves toward the back cover, the movement presses the spacer, and the pressed spacer hits the back cover, so that the movement of the movement is suppressed. As a result, the amount of movement of the movement to the back cover side can be reduced as compared with the case where the spacer is not arranged, and it is possible to suppress the occurrence of a defect.
In addition, it is possible to prevent the movement from hitting the back cover.
Further, since the spacer is arranged in the recess formed in the back cover, the thickness when the back cover and the spacer are combined is compared with the case where the spacer is arranged between the flat back cover and the movement. The dimensions can be reduced. As a result, the timepiece can be made thinner.

In the clock of the present invention, the recess is provided outside the position where the distance from the center of the plane of the back cover to the outer circumference of the back cover is half when the back cover is viewed from the thickness direction. It is preferable to have.

Since the back cover is attached to the case body on the outer circumference, for example, when pressure is applied from the outside in water, the outer circumference side is less likely to bend than the plane center side and has higher durability.
Therefore, by providing a recess on the outer peripheral side of the highly durable back cover, specifically, on the outer side of the position where the distance from the center of the plane of the back cover to the outer circumference of the back cover is half in a plan view. The durability of the back cover against external pressure can be improved as compared with the case where the recess is provided on the plane center side of the back cover having low durability.

In the watch of the present invention, the recess has an annular shape along the outer circumference of the back cover in the plan view, and the spacer has a ring shape corresponding to the recess in the plan view. preferable.

When assembling the watch, the movement is placed inside the case body, the spacer is attached to the movement, and then the back cover is attached to the case body. The back cover has a screw structure on the outer peripheral surface, and has a screw-in type back cover (screw back) that is screwed into the case body.
According to the present invention, when a screw-in type back cover is used, a movement is arranged inside the case body, a spacer is attached to the movement, and then the back cover is screwed into the case body, the spacer is arranged in the recess. The back cover can be rotated in this state. Therefore, it is possible to prevent the back cover and the spacer from interfering with each other.
As described above, according to the present invention, since the screw-in type back cover can also be used, the degree of freedom in design can be improved.

In the watch of the present invention, the movement preferably includes a regulating portion that regulates the rotation of the spacer in the circumferential direction.

According to the present invention, when a screw-in type back cover is used and the back cover is screwed into the case body, it is possible to prevent the spacer from rotating in the circumferential direction from a preset position and being displaced.
Further, since the regulation unit is provided in the movement, the watch can be easily assembled as compared with the case where the regulation unit is incorporated in the case body as a separate part.

The watch of the present invention comprises a winding stem attached to the movement, and a plurality of the spacers are provided, and at least one of the plurality of spacers overlaps a straight line along the axis of the winding stem in the plan view. It is preferably arranged in a position.

In a watch equipped with a winding stem, the movement tilts toward the back cover side with the position where the crown is attached in the winding stem as a fulcrum due to an impact, and the end where the winding stem is attached in the movement is the end of the winding stem. The movement tends to tilt toward the back cover, with the opposite end in the axial direction as the fulcrum.
According to the present invention, when the movement is tilted as described above, the tip of the tilted portion directly presses the spacer, so that the amount of movement of the movement to the back cover side can be reduced more reliably.

In the watch of the present invention, the spacer preferably includes a spacer main body portion and a pressing portion that presses the spacer main body portion against the movement.

According to the present invention, the movement is pressed by the spacer main body portion on the side opposite to the back cover and hits the dial or the like.
Therefore, for example, when the clock is moved, it is possible to prevent the movement from moving inside the case body, and it is possible to prevent a sound (rattling sound).

In the watch of the present invention, it is preferable that the movement includes a metal spring that abuts on the bottom surface of the recess and presses the bottom surface.

According to this configuration, since the movement is pressed against the dial or the like, it is possible to prevent the movement from moving inside the case body when the watch is moved, for example, and it is possible to prevent the movement from making a sound.
Further, when the back cover is made of a material softer than stainless steel such as titanium, if the pressing force of the metal spring is large, the back cover may be scraped by the tip of the metal spring.
According to the present invention, since the metal spring is in contact with the bottom surface of the recess of the back cover, the amount of deformation can be reduced as compared with the case of contacting the surface other than the recess of the back cover, and the force for pushing the back cover can be reduced. Can be made smaller. Therefore, even if the metal spring has a pressing force that may scrape the back cover when it comes into contact with a surface other than the concave portion of the back cover, the pressing force is applied without changing the design of the metal spring. It can be used in a smaller size and can prevent the back cover from being scraped.

The front view which shows the electronic clock of embodiment which concerns on this invention. FIG. 5 is a cross-sectional view showing an electronic clock according to an embodiment. The perspective view which shows the back cover in embodiment. The perspective view which shows the movement which attached the spacer in an embodiment. The exploded perspective view of FIG. A partially enlarged view of FIG.

Hereinafter, the electronic clock 1 (clock) according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of the electronic clock 1. FIG. 2 is a cross-sectional view of the electronic clock 1.
As shown in FIGS. 1 and 2, the electronic watch 1 includes an outer case 2, a back cover 5, and a cover glass 6. The outer case 2 is formed by fitting a bezel 4 made of ceramic to a cylindrical case body 3 made of metal. A disk-shaped dial 12 is arranged on the inner peripheral side of the bezel 4 via an annular dial ring 11 made of plastic.
On the side surface of the outer case 2, an A button 7 is provided at a position in the 2 o'clock direction, a B button 8 is provided at a position in the 4 o'clock direction, and a crown 9 is provided at a position in the 3 o'clock direction from the center of the plane of the dial 12. Is provided.

As shown in FIG. 2, in the electronic watch 1, of the two openings of the metal case body 3, the opening on the front side is closed by the cover glass 6 via the bezel 4, and the opening on the back side is closed. Is closed with a back cover 5 made of metal.
Metallic materials such as BS (brass), SUS (stainless steel), and titanium are used for the case body 3 and the back cover 5. A material other than metal such as resin may be used for the case body 3.

[Composition of back cover]
FIG. 3 is a perspective view of the back cover 5 as viewed from the cover glass 6 side.
As shown in FIGS. 2 and 3, the back cover 5 is formed in a disk shape, and on the cover glass 6 side of the back cover 5, the back cover 5 is viewed in a plan view from the thickness direction. A recess 5A formed in an annular shape along the outer circumference is provided.
Here, the recess 5A is formed outside the position P1 which is half the distance from the center O of the plane to the outer circumference of the back cover 5 in a plan view.
Further, the back cover 5 is provided with a side wall portion 51 extending to the cover glass 6 side along the outer circumference of the back cover 5 on the outside of the recess 5A. A screw structure 5B is formed on the outer peripheral surface of the side wall portion 51. A groove corresponding to the screw structure 5B is formed on the inner peripheral surface of the case body 3, and the back cover 5 is screwed into and attached to the case body 3 by the screw structure 5B.
The back cover 5 is not limited to the one screwed into the case body 3 (screw back), and may be attached to the case body 3 by a fixing part such as a screw. Further, the case body 3 and the back cover 5 may be integrally formed.

[Internal structure of watch]
Next, the internal structure incorporated in the outer case 2 of the electronic timepiece 1 will be described.
As shown in FIG. 2, in the space surrounded by the outer case 2, the back cover 5, and the cover glass 6, the dial ring 11, the dial 12, the solar cell 13, the movement 14, and the antenna body 17 are arranged. , The dial receiving ring 16 and the spacer 30 are housed.

The dial ring 11 is provided with a flat plate portion whose outer peripheral end is in contact with the inner peripheral surface of the bezel 4 and whose one surface is parallel to the cover glass 6 and an inclined portion inclined toward the dial 12 side. The dial ring 11 has an annular shape in a plan view and a mortar shape in a cross-sectional view. A flat plate portion of the dial ring 11, an inclined portion, and an inner peripheral surface of the bezel 4 form a continuous storage space along the inner circumference of the bezel 4, and an annular antenna body is formed in this storage space. 17 is stored. Here, the electronic clock 1 has a function of receiving a satellite signal from a GPS satellite orbiting the earth and correcting the time based on the received satellite signal. The antenna body 17 is for receiving satellite signals.

The dial 12 is made of a light-transmitting material such as plastic, has pointers 21 to 24 between the dial 12 and the cover glass 6, and is arranged inside the dial ring 11.
A solar cell 13 that generates photovoltaic power is provided on the back cover 5 side of the dial 12.

A movement 14 attached to the inner circumference of the dial receiving ring 16 is arranged between the solar cell 13 and the back cover 5.
As the movement 14, those conventionally used for watches can be used. In the present embodiment, the movement 14 includes a secondary battery for charging the generated power of the solar cell 13, a step motor driven by the power of the secondary battery, and a train wheel driven by the step motor. It will be used.
The movement 14 drives the second hand 21, the minute hand 22, the hour hand 23, the mode hand 24, and the date wheel 25 shown in FIG. 1 via a step motor and a train wheel. The second hand 21, the minute hand 22, and the hour hand 23 are attached to a pointer shaft provided at the center of the plane of the dial 12, and the mode hand 24 is provided at a position deviated from the center of the plane in the 8 o'clock direction. It is attached to the pointer shaft.
Further, a winding stem 15 is attached to the movement 14, and a crown 9 is attached to the end of the winding stem 15.

[Circuit holder configuration]
FIG. 4 is a perspective view of the movement 14 to which the spacer 30 is attached as viewed from the back cover 5 side, and FIG. 5 is an exploded perspective view of the configuration of FIG.
As shown in FIGS. 2, 4, and 5, the movement 14 is provided with a disk-shaped circuit retainer 40 for covering circuit components on the back cover 5 side. The circuit retainer 40 is made of metal.
As shown in FIGS. 4 and 5, the circuit retainer 40 is formed with a regulating portion 41 extending from the outer circumference in the 9 o'clock direction and a regulating portion 42 extending from the outer circumference in the 3 o'clock direction. The regulating units 41 and 42 regulate the rotation of the spacer 30 in the circumferential direction, which will be described in detail later.
Further, on the outer peripheral side of the circuit retainer 40, conduction springs 43 to 46 as metal springs that are inclined and extended toward the back cover 5 side are formed. The conductive springs 43 to 46 electrically connect the ground terminal of the circuit board (not shown) included in the movement 14 to the back cover 5 and the case body 3.

[Spacer configuration]
As shown in FIGS. 2, 4, and 5, a spacer 30 formed in an annular shape corresponding to the recess 5A of the back cover 5 is attached to the back cover 5 side of the circuit retainer 40 in a plan view. ing. Examples of the material of the spacer 30 include resins such as ABS resin (copolymer of acrylonitrile, butadiene, and styrene).
As shown in FIGS. 4 and 5, the spacer 30 is composed of a spacer main body 37 formed in an annular shape, protruding portions 31, 32, 33, and elastic portions 34, 35, 36.

The protruding portions 31 to 33 are formed so as to project from the outer periphery of the spacer main body 37 in the direction toward the movement 14.
In a plan view, the protrusions 31 and 32 are located on both sides of the regulation portion 41 of the circuit retainer 40 in the circumferential direction of the spacer 30, and the protrusions 33 are located on one side of the regulation portion 42 in the circumferential direction. doing.
When a force for rotating the spacer 30 in the circumferential direction is applied, the protrusions 31 to 33 hit the regulating portions 41 and 42, so that the rotation of the spacer 30 in the circumferential direction is restricted.
Further, when the spacer 30 moves toward the case body 3 in the plane direction (direction along the surface of the dial 12), the protrusions 31 to 33 hit the outer peripheral surface of the circuit retainer 40, so that the spacer 30 is flat. Directional movement is also restricted.

The elastic portions 34 to 36 have elasticity because they are formed on the outer periphery of the spacer main body portion 37 and are formed in a beam shape. The elastic portions 34 to 36 are formed with protrusions 341, 351 and 361 protruding toward the back cover 5.
Since the tips of the protrusions 341, 351 and 361 are in contact with the bottom surface of the recess 5A of the back cover 5 and pushed by the bottom surface, the elastic portions 34 to 36 are bent and deformed. As a result, a force is generated on the spacer main body 37 toward the movement 14 side. Therefore, the movement 14 is pressed toward the cover glass 6 by the spacer main body 37. That is, the elastic portions 34 to 36 are pressing portions that press the spacer main body portion 37 against the movement 14.

Further, the spacer main body 37 is formed with insertion portions 371, 372, 373, 374 through which the conduction springs 43 to 46 of the circuit retainer 40 are inserted. The conductive springs 43 to 46 pass through the insertion portions 371 to 374 and come into contact with the bottom surface of the recess 5A of the back cover 5 to press the bottom surface. As a result, the movement 14 is pressed toward the dial 12.

As shown in FIG. 6, the spacer 30 is arranged in the recess 5A formed in the back cover 5 and is in contact with the circuit retainer 40.
Here, the thickness dimension D1 of the spacer 30, that is, the thickness dimension of the spacer main body 37 is larger than the depth dimension D2 of the recess 5A of the back cover 5.
The thickness dimension D1 of the spacer 30 is, for example, about 0.3 mm, and the depth dimension D2 of the recess 5A is, for example, about 0.2 mm.
According to this configuration, when the movement 14 moves toward the back cover 5, the movement 14 presses the spacer main body 37 before the movement 14 comes into contact with the back cover 5, and the pressed spacer main body 37 presses the back. It hits the bottom surface of the recess 5A of the lid 5. As a result, the movement of the movement 14 to the back cover 5 side is suppressed.
In the present embodiment, the thickness dimension of the back cover 5 is set to the minimum dimension (for example, about 1.5 mm) that can achieve water resistance to 10 atm, and the distance between the back cover 5 and the circuit retainer 40 is set to the back cover 5. The minimum size (for example, about 0.25 mm) is set in consideration of the amount of bending when 10 atm is applied to the lid.

[Action and effect of the embodiment]
For example, when the electronic watch 1 falls in a flat position (the back cover 5 side or the cover glass 6 side faces downward) and collides with the ground, the movement 14 moves the back cover 5 inside the case body 3 due to the impact. May move towards.
Since the movement 14 is attached with parts fixed to the exterior parts, such as the winding stem 15, when the movement 14 moves in the case body 3 toward the back cover 5, the movement amount becomes large. Force is applied to the part, which may cause a defect.
Here, in order to explain the operation and effect of the present embodiment, first, when the electronic timepiece 1 does not have the spacer 30, an impact is applied to the electronic timepiece and the movement 14 moves in the case body 3. Will be described.
When the electronic timepiece, for example, the cover glass 6 side falls downward and collides with the ground, the movement 14 first generates a force to move to the cover glass 6 side.
Since the movement of the movement 14 to the cover glass 6 side is suppressed by the bezel 4 via the dial 12 and the dial ring 11, the movement 14 does not move to the cover glass 6 side but bends to the cover glass 6 side.
After that, the movement 14 may tilt toward the back cover 5 side with the position 15A (see FIG. 2) where the crown 9 is attached on the winding stem 15 as a fulcrum due to the bending reaction. In this case, the end 14B (see FIG. 2) opposite to the end 14A (see FIG. 2) to which the winding stem 15 is attached in the movement 14 in the axial direction of the winding stem 15 moves toward the back cover 5. ..
Then, when the end portion 14B collides with the back cover 5, the movement 14 may incline toward the back cover 5 side with the end portion 14B as a fulcrum. In this case, the end portion 14A moves toward the back cover 5. At this time, a force is applied to the winding stem 15, and the winding stem 15 may be pulled out from the movement 14, or the winding stem 15 may come off from the crown 9.

On the other hand, according to the electronic watch 1 of the present embodiment, when the movement 14 moves toward the back cover 5, the movement 14 presses the spacer 30 and the pressed spacer 30 hits the back cover 5. , The movement of the movement 14 is suppressed. As a result, the amount of movement of the movement 14 to the back cover 5 side can be reduced as compared with the case where the spacer 30 is not arranged, and the winding stem 15 can be pulled out from the movement 14 or the winding stem 15 can be removed from the crown 9. Can be suppressed.
Further, it is possible to prevent the movement 14 from hitting the back cover 5.

Further, since the spacer 30 is arranged in the recess 5A formed in the back cover 5, the back cover 5 and the spacer 30 are arranged as compared with the case where the spacer 30 is arranged between the flat back cover 5 and the movement 14. It is possible to reduce the thickness dimension when viewed together. As a result, the electronic clock 1 can be made thinner.

Since the back cover 5 is attached to the case main body 3 on the outer circumference, the outer peripheral side is less likely to bend than the flat center side when pressure is applied from the outside, for example, in water, and the durability is high.
Therefore, by forming the recess 5A on the outer peripheral side of the back cover 5 having high durability, specifically, on the outside of the position P1, the recess 5A is formed on the plane center side of the back cover 5 having low durability. The durability of the back cover 5 against external pressure can be improved as compared with the case where the back cover 5 is used.

When the movement 14 is arranged inside the case body 3, the spacer 30 is attached to the movement 14, and then the back cover 5 is screwed into the case body 3, the back cover is placed in the recess 5A with the spacer 30 arranged. Since 5 can be rotated, it is possible to prevent the back cover 5 and the spacer 30 from interfering with each other. As described above, according to the electronic timepiece 1, since the screw-in type back cover 5 can also be used, the degree of freedom in design can be improved.
Further, since the rotation of the spacer 30 in the circumferential direction is restricted, when the back cover 5 is screwed into the case body 3, it is possible to prevent the spacer 30 from rotating and shifting in the circumferential direction from a preset position. Further, since the regulation units 41 and 42 for restricting the rotation are provided in the movement 14, the electronic watch 1 can be easily assembled as compared with the case where the regulation unit is incorporated in the case body 3 as a separate part. ..

The movement 14 is pressed toward the cover glass 6 by the spacer main body 37 and hits the dial 12 and the like. Therefore, for example, when the electronic clock 1 is moved, it is possible to prevent the movement 14 from moving inside the case body 3, and it is possible to prevent a sound (rattling sound) from being produced.

When the back cover 5 is made of a material softer than stainless steel such as titanium, if the pressing force of the conductive springs 43 to 46 is large, the back cover 5 may be scraped by the tips of the conductive springs 43 to 46. is there.
According to the electronic watch 1, since the conduction springs 43 to 46 are in contact with the bottom surface of the recess 5A of the back cover 5, the amount of deformation is smaller than in the case of contacting the surface other than the recess 5A of the back cover 5. The force for pushing the back cover 5 can be reduced. Therefore, even if the conductive spring has a pressing force that may scrape the back cover 5 when it comes into contact with a surface other than the recess 5A of the back cover 5, the design of the conductive spring is not changed. It can be used with a small pressing force, and it is possible to prevent the back cover 5 from being scraped.
According to the electronic watch 1, for example, the pressing force of the conduction springs 43 to 46 is compared with the case where the movement amount of the movement 14 is suppressed only by the pressing force of the conduction springs 43 to 46 without providing the spacer 30. Can be made smaller, and the back cover 5 can be prevented from being scraped.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.

In the above embodiment, the spacer 30 formed in an annular shape along the outer circumference of the back cover 5 is arranged outside the position P1 in a plan view, but the present invention is not limited to this.
For example, spacers formed in a square ring or an elliptical ring may be arranged.
Further, three or more independent spacers may be arranged along the outer circumference of the back cover 5.
In this case, it is preferable that at least one of the plurality of spacers is arranged at a position overlapping the straight line L1 (see FIG. 4) along the axis of the winding stem 15.
In the electronic timepiece 1 provided with the winding stem 15, as described above, the end portion 14A and the end portion 14B of the movement 14 in the straight line L1 direction may move toward the back cover 5 due to an impact. In this case, according to the above configuration, since the end portion 14A and the end portion 14B directly press the spacer 30, the amount of movement of the movement 14 to the back cover 5 side can be reduced more reliably.
For example, when there are three spacers and one of them is arranged at a position overlapping the straight line L1, the remaining two spacers pass through the plane center O of the back cover 5 and are orthogonal to the straight line L1 in a plan view. It is preferable that the spacer is arranged on the side opposite to the side on which the one spacer is arranged, and is arranged with the straight line L1 in between.
Further, when there are four spacers and two of the spacers are arranged at positions overlapping the straight line L1, the remaining two spacers may be arranged with the straight line L1 in between.
Further, the spacer 30 may be arranged in an arbitrary shape at an arbitrary position overlapping with the movement 14 in a plan view.
In such a case, the recess 5A of the back cover 5 is formed according to the arrangement and shape of the spacer 30.

In the above embodiment, the movement 14 is pushed toward the cover glass 6 by the spacer 30, but the present invention is not limited to this. For example, when the movement 14 can be pressed toward the cover glass 6 by other parts, the movement 14 does not have to be pressed by the spacer 30. In this case, the spacer 30 does not have to include elastic portions 34 to 36.

In the above embodiment, the protrusions 31 to 33 of the spacer 30 hit the regulating portions 41 and 42 extending outward from the circuit retainer 40 to restrict the rotation of the spacer 30 in the circumferential direction. Not limited to this.
For example, the rotation of the spacer 30 may be restricted by a through hole formed in the spacer 30 and a regulating portion extending from the circuit retainer 40 to the back cover 5 side through the through hole.
Further, the restricting portion that regulates the rotation of the spacer 30 may be formed not on the circuit retainer 40 but on other parts constituting the movement 14 such as the main plate.

In the above embodiment, an elastic material such as silicone gel may be used for the spacer 30.
In this case, by using a spacer whose thickness dimension in the free state is larger than the clearance dimension between the movement 14 and the bottom surface of the recess 5A of the back cover 5, the spacer is sandwiched between the movement 14 and the back cover 5 and held. The movement of the spacer in the direction along the surface of the dial 12 can be restricted, and the movement 14 can be pushed toward the cover glass 6. Therefore, the movement 14 and the spacer need not have a structure for restricting the movement of the spacer in the direction along the surface of the dial 12 and a structure for pushing the movement 14 toward the cover glass 6.
In this case, if the back cover 5 is screwed and attached to the case body 3, the spacer may be damaged. Therefore, the back cover 5 may be attached to the case body 3 by fixing parts such as screws. preferable.

In the above embodiment, the conductive springs 43 to 46 as the metal springs extend in the direction toward the back cover 5 and are in contact with the bottom surface of the recess 5A of the back cover 5, but the present invention is not limited to this.
For example, the back cover 5 may come into contact with a surface other than the recess 5A, or may extend in the direction toward the case body 3 and come into contact with the inner peripheral surface of the case body 3.
Further, the metal spring may be formed on a battery retainer or the like included in the movement 14. Further, the ground terminal of the movement 14 may not be electrically connected to the back cover 5 and the case body 3.

In the above embodiment, the electronic clock 1 is an analog clock having pointers 21 to 24 and driving each pointer 21 to 24 by a movement 14, but the present invention is not limited thereto. For example, it may be a digital clock having a digital display device such as a liquid crystal panel and driving the digital display device by the movement 14. The present invention can also be applied to mechanical watches.

1 ... Electronic clock (clock), 2 ... Exterior case, 3 ... Case body, 4 ... Bezel, 5 ... Back cover, 5A ... Recess, 5B ... Screw structure, 6 ... Cover glass, 7 ... A button, 8 ... B button , 9 ... Crown, 11 ... Dial ring, 12 ... Dial, 13 ... Solar cell, 14 ... Movement, 14A, 14B ... End, 15 ... Winding, 15A ... Position, 16 ... Dial receiving ring, 17 ... Antenna Body, 21 ... second hand, 22 ... minute hand, 23 ... hour hand, 24 ... mode hand, 25 ... day clock, 30 ... spacer, 31-33 ... protrusion, 34-36 ... elastic part, 37 ... spacer body part, 40 ... Circuit retainer, 41, 42 ... Regulatory part, 43-46 ... Conductive spring (metal spring), 51 ... Side wall part, 341, 351, 361 ... Projection part, 371, 372, 373, 374 ... Insertion part, O ... Plane center , P1 ... Position.

Claims (6)

Cylindrical case body and
A metal back cover that closes one opening of the case body,
The movement placed inside the case body and
With a spacer disposed between the back cover and the movement,
On the movement side of the back cover, a recess is provided outside the position where the distance from the center of the plane of the back cover to the outer circumference of the back cover is half when the back cover is viewed from the thickness direction. Provided,
The spacer is arranged in the recess and
A timepiece characterized in that the thickness dimension of the spacer is larger than the depth dimension of the recess. In the watch according to claim 1 ,
The recess has an annular shape along the outer circumference of the back cover in the plan view.
A timepiece characterized in that the spacer has an annular shape corresponding to the concave portion in the plan view. In the watch according to claim 2 .
The movement is a timepiece including a regulating portion that regulates the rotation of the spacer in the circumferential direction. In the watch according to claim 1 ,
Equipped with a winding stem attached to the movement
A plurality of the spacers are provided,
A timepiece characterized in that at least one of the plurality of spacers is arranged at a position overlapping a straight line along the axis of the winding stem in the plan view. In the timepiece according to any one of claims 1 to 4 .
The timepiece is characterized by comprising a spacer main body portion and a pressing portion for pressing the spacer main body portion against the movement. In the timepiece according to any one of claims 1 to 5 .
The watch is characterized in that the movement includes a metal spring that abuts on the bottom surface of the recess and presses the bottom surface.

Images