clock

Abstract

To provide a clock that can improve the sound quality of sounds generated internally. [Solution] The clock comprises a first component that generates sound, and a second component made of a metal mainly composed of magnesium that absorbs vibrations caused by the sound generated by the first component. If the first component is a pawl lever and a drive wheel, the second component is a rotor support that supports the rotor weight, or a pawl lever retainer that holds down the pawl lever.

Description

Technical Field

[0001] This disclosure relates to a clock.

Background Art

[0002] In Patent Document 1, as a reverse rotation prevention mechanism for suppressing the rewinding of a spring, there is disclosed a spring device including a support member constituted by a leaf spring that supports an engagement member engaged with the tooth profile of a square hole wheel, and a contact member with which the support member comes into contact in conjunction with the rotation of the square hole wheel. In this spring device, when the spring is manually wound up, a winding sound is generated by the support member coming into contact with the contact member in conjunction with the rotation of the square hole wheel. Therefore, by appropriately selecting the material, size, etc. of the support member and the contact member, the winding sound is adjusted to obtain a good winding sound with a high-class feeling.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when sound is generated by components such as the support member and the contact member, there is a problem that the sound propagates and the components in the vicinity resonate, causing the generated sound to be distorted and affecting the sound heard by users, etc.

Means for Solving the Problems

[0005] The clock of this disclosure includes a first component that generates sound, and a second component formed of a metal having magnesium as a main component, which absorbs vibrations caused by the sound generated by the first component.

Brief Description of the Drawings

[0006] [Figure 1]This is a front view showing the clock of the first embodiment. [Figure 2] This is a perspective view showing the movement of the first embodiment. [Figure 3] This is a perspective view showing the movement with the rotor removed. [Figure 4] This is a plan view showing the rotary weight bearing, claw lever retainer, claw lever, and transmission wheel. [Figure 5] This is a plan view showing the rotary weight bearing, claw lever, and transmission wheel. [Figure 6] This is a plan view showing the movement of the first embodiment. [Figure 7] This is a rear view showing the movement of the second embodiment. [Modes for carrying out the invention]

[0007] Hereinafter, the clock 1 of the first embodiment of this disclosure will be described with reference to the drawings. Figure 1 is a front view of watch 1. Watch 1 is a wristwatch worn on the user's wrist and has a cylindrical outer case 2, with a dial 3 positioned on the inner circumference of the outer case 2. Of the two openings in the outer case 2, the opening on the front side is covered with a cover glass, and the opening on the back side is covered with a case back.

[0008] The watch 1 comprises a movement 10, shown in Figure 2, housed within an outer case 2, and hands 4, shown in Figure 1, for displaying time information. Hands 4 consist of an hour hand 4A, a minute hand 4B, and a second hand 4C. The dial 3 is provided with a calendar window 3A, through which the date wheel 41 can be seen. The dial 3 also features hour markers 3B for indicating the time and a fan-shaped sub-dial 3C for indicating the power reserve using a power reserve hand 5. A crown 7 is provided on the side of the outer case 2.

[0009] Next, the movement 10 housed within the outer case 2 will be described with reference to Figures 2-6. Figure 2 is a perspective view of the movement 10 as seen from the back cover side, and Figure 3 is a perspective view of Figure 2 with the rotor omitted. As shown in Figure 2, the movement 10 comprises a base plate 11, a first bridge 12, a second bridge 13, a gear train bridge (not shown), a rotor 21, a rotor bridge 22, a pawl lever 31, a transmission wheel 32, a ratchet wheel 33, and a barrel wheel 34. The first bridge 12, second bridge 13, gear train bridge, and rotor bridge 22 are support components that support various parts, and the rotor bridge 22 is a support component that supports the rotor 21. As shown in Figure 3, a bearing 23 is attached to the rotor support 22. The bearing 23 consists of an outer ring, an inner ring, balls, etc., with the outer ring fixed to the rotor support 22 and the rotor 21 fixed to the inner ring. As shown in Figures 4 and 5, the inner ring of the bearing 23 has an eccentric pin 24 positioned eccentrically with respect to the rotation axis of the inner ring, and a claw lever 31 is rotatably attached to this eccentric pin 24. Therefore, when the inner ring of the bearing 23 rotates due to the rotation of the rotor 21, the eccentric pin 24 revolves around the rotation axis of the inner ring, and the claw lever 31 attached to the eccentric pin 24 moves back and forth in the direction toward and away from the transmission wheel 32.

[0010] As shown in Figure 5, the claw lever 31 includes a pull claw 311 and a push claw 312 that clamp the transmission wheel 32 in a plan view taken from the thickness direction of the clock 1, that is, from a direction perpendicular to the surface of the dial 3. The transmission wheel 32 engages with the pull pawl 311 and the push pawl 312, and the transmission wheel 32 rotates in one direction in conjunction with the forward and backward movement of the pawl lever 31. The rotation of the transmission wheel 32 is transmitted to the ratchet wheel 33, and the rotation of the ratchet wheel 33 winds the mainspring in the barrel wheel 34. As shown in Figure 4, a pawl lever retainer 35 is positioned on the base plate 11 side of the pawl lever 31. The pawl lever retainer 35 is fixed to the rotor weight support 22 with a screw 351. Therefore, the pawl lever 31 is positioned between the rotor weight support 22 and the pawl lever retainer 35. The rotor weight support 22 is fixed to the base plate 11 with screws along with the first support 12 and the gear train support. The second support 13 is also fixed to the base plate 11 with screws. As shown in Figures 2 and 3, the transmission wheel 32 is positioned between the rotor weight bearing 22 and the first support 12. The shaft of the transmission wheel 32 is supported by a bearing 321 held in the rotor weight bearing 22 and a bearing (not shown) held in the first support 12. Therefore, the transmission wheel 32 is a component that rotates around its shaft, and the rotor weight bearing 22 and the first support 12 are components that hold the bearing 321 that supports the shaft of the transmission wheel 32.

[0011] The barrel wheel 34 is positioned between the base plate 11 and the first bearing 12. The barrel arbor (not shown), which is the shaft of the barrel wheel 34, is supported by bearings (not shown) held by the base plate 11 and the first bearing 12, respectively. The ratchet wheel 33 is positioned between the first bearing 12 and the transmission wheel 32 and is attached to the barrel arbor by a screw 331. A pawl 37, which engages with the ratchet wheel 33 and restricts the rotation of the ratchet wheel 33 to one direction only, is attached to the first bearing 12 by a screw 371. Thus, the ratchet wheel 33 is a component that rotates around the barrel arbor, which is its shaft, while the base plate 11 and the first bearing 12 are components that hold the bearings that support the shaft of the ratchet wheel 33. The second support 13 is positioned between the base plate 11 and the first support 12 and the gear train support, and pivotally supports the second wheel (not shown). The other gear trains from the third wheel onward are also pivotally supported between the base plate 11 and the gear train support, or between the second support 13 and the gear train support. The pointer 4 is connected to and driven by these gear trains. Furthermore, the movement 10 of this embodiment includes a generator that has a rotor rotated by the gear train and also serves as a speed regulator for the gear train, a power supply circuit that includes a secondary battery or the like that is charged by the current generated and rectified by the generator, and a control IC or the like that is driven by the power supplied from the power supply circuit to regulate the speed of the generator. In other words, the clock 1 of this embodiment is an electronically controlled mechanical clock that drives the gear train using a mainspring as a power source, regulates the speed of the gear train with a generator that also serves as a speed regulator, and drives a control IC.

[0012] As shown in Figure 6, the base plate 11 is provided with a date wheel 41, which is a calendar wheel, and a date wheel retainer 42, which is positioned on the inner circumference of the date wheel 41 and fixed to the base plate 11.

[0013] Next, the first and second components of the clock 1 of this embodiment will be described. The first component is a component that generates sound, and in this embodiment, it is composed of multiple components that generate sound by contact. A first example of the first component is a pawl lever 31 and a transmission wheel 32, and a second example is a clasp 37 and a square hole wheel 33. The second component is a component that absorbs vibrations caused by sound generated by the first component, and is made of a metal whose main component is magnesium, that is, pure magnesium or a magnesium alloy. Examples of magnesium alloys include AZ31, AZ80, and AZ92-T6 (as designated by the American Society for Testing and Materials (ASTM)). AZ31, AZ80, and AZ92-T6 contain 91% or more magnesium, or 89% or more, respectively. The second component that absorbs vibrations caused by sound generated by the first component means a magnesium alloy component that can absorb and reduce vibrations caused by sound transmitted from the first component through the air or other components to the second component, causing the second component to vibrate, due to the properties of the magnesium alloy.

[0014] If the first component is a claw lever 31 and a transmission wheel 32, the second component, which is made of magnesium alloy, is one or more components selected from a rotor weight holder 22, a claw lever retainer 35, a base plate 11, a first receiver 12, a second receiver 13, a sun wheel 41, etc. Here, the rotor weight bearing 22 is in the vicinity of the pawl lever 31 and the drive wheel 32, and they overlap in a plan view. The rotor weight bearing 22 also holds the bearing 321 that pivotally supports the shaft of the drive wheel 32. Therefore, the rotor weight bearing 22 may vibrate because the sound, or vibration, generated by the contact between the pawl lever 31 and the drive wheel 32 is transmitted through the air and the bearing 321. If the rotor weight bearing 22 is made of a magnesium alloy with high vibration absorption properties, the vibration of the rotor weight bearing 22 can be suppressed. By damping the vibration of the rotor weight bearing 22, the impact on the sound generated by the contact between the pawl lever 31 and the drive wheel 32 can be reduced. The claw lever retainer 35 is in the vicinity of the claw lever 31 and the transfer wheel 32, overlaps in plan view, and may come into contact with the claw lever 31. Therefore, there is a possibility that the sound generated by the contact between the claw lever 31 and the transfer wheel 32 may propagate and vibrate. For this reason, when the claw lever retainer 35 is formed of a magnesium alloy with high vibration absorption, the vibration of the claw lever retainer 35 can be suppressed. By attenuating the vibration of the claw lever retainer 35, the influence on the sound generated by the contact between the claw lever 31 and the transfer wheel 32 can be reduced. The floor 11 overlaps the claw lever 31 and the transfer wheel 32 in plan view and is a component with a large surface area within the movement 10. Furthermore, since it holds the bearing that supports the shaft of the transfer wheel 32, there is a possibility that the sound generated by the contact between the claw lever 31 and the transfer wheel 32 may propagate and vibrate. For this reason, when the floor 11 is formed of a magnesium alloy with high vibration absorption, the vibration of the floor 11 can be suppressed. By attenuating the vibration of the floor 11, the influence on the sound generated by the contact between the claw lever 31 and the transfer wheel 32 can be reduced. The first bearing 12 and the second bearing 13 are in the vicinity of the claw lever 31 and the transfer wheel 32, or partially overlap in plan view. Furthermore, since the first bearing 12 holds the bearing that supports the shaft of the transfer wheel 32, there is a possibility that the sound generated by the contact between the claw lever 31 and the transfer wheel 32 may propagate and vibrate. For this reason, when the first bearing 12 and the second bearing 13 are formed of a magnesium alloy with high vibration absorption, the vibration of the first bearing 12 and the second bearing 13 can be suppressed. By attenuating the vibration of the first bearing 12 and the second bearing 13, the influence on the sound generated by the contact between the claw lever 31 and the transfer wheel 32 can be reduced. The dial wheel 41 is a component with a large surface area within the movement 10 and is a component that is rotationally driven by a dial rotating wheel or the like and is not fixed with a screw or the like, so it is a component that is likely to resonate when vibration is transmitted. For this reason, there is a possibility that the sound, that is, the vibration, generated by the contact between the claw lever 31 and the transfer wheel 32 may propagate and the dial wheel 41 may also vibrate. When the dial wheel 41 is formed of a magnesium alloy with high vibration absorption, the vibration of the dial wheel 41 can be suppressed. By attenuating the vibration of the dial wheel 41, the influence on the sound generated by the contact between the claw lever 31 and the transfer wheel 32 can be reduced. Even for components other than the above components, if there are components that vibrate due to the propagation of the sound generated by the contact between the claw lever 31 and the transmission wheel 32, the influence on the sound can be reduced by forming them from a magnesium alloy.

[0015] When the first component is the snap 37 and the square hole wheel 33, the second component is one or more components selected from the first bearing 12, the rotating weight bearing 22, the floor board 11, etc. The first bearing 12 is a component to which the snap 37 is fixed with a screw, overlaps in the vicinity and in plan view, and further holds a bearing that pivotally supports the incense box body to which the square hole wheel 33 is attached. Therefore, the sound, that is, the vibration generated by the contact between the snap 37 and the square hole wheel 33, may vibrate because it propagates through the screw and air. For this reason, when the first bearing 12 is formed from a magnesium alloy with high vibration absorption properties, the vibration of the first bearing 12 can be suppressed. By damping the vibration of the first bearing 12, the influence on the sound generated by the contact between the snap 37 and the square hole wheel 33 can be reduced. The rotating weight bearing 22 is arranged in the vicinity of the snap 37 and the square hole wheel 33, and a part thereof overlaps in plan view. Therefore, the sound generated by the contact between the snap 37 and the square hole wheel 33 may propagate and vibrate. For this reason, when the rotating weight bearing 22 is formed from a magnesium alloy with high vibration absorption properties, the vibration of the rotating weight bearing 22 can be suppressed. By damping the vibration of the rotating weight bearing 22, the influence on the sound generated by the contact between the snap 37 and the square hole wheel 33 can be reduced. The floor board 11 overlaps with the snap 37 and the square hole wheel 33 in plan view and is a component with a large surface area within the movement 10. Therefore, the sound generated by the contact between the snap 37 and the square hole wheel 33 may propagate and vibrate. For this reason, when the floor board 11 is formed from a magnesium alloy with high vibration absorption properties, the vibration of the floor board 11 can be suppressed. By damping the vibration of the floor board 11, the influence on the sound generated by the contact between the snap 37 and the square hole wheel 33 can be reduced. Even for components other than the above components, if there are components that vibrate due to the propagation of the sound generated by the contact between the snap 37 and the square hole wheel 33, the influence on the sound can be reduced by forming them from a magnesium alloy.

[0016] [Effects of the First Embodiment] Since at least some of the parts of the first components, such as the claw lever 31 and transmission wheel 32, and the rotor weight holder 22, claw lever retainer 35, base plate 11, first receiver 12, second receiver 13, and sun wheel 41, which may vibrate due to sound propagation from the first components such as the claw lever 31 and transmission wheel 32, as well as the kohaze 37 and square hole wheel 33, are made of a second component made of a magnesium alloy, which is a metal mainly composed of magnesium, vibration of the second component can be suppressed. As a result, the impact on the sound generated by the first component can be reduced, and the sound quality of the audible sound heard by the user can be improved.

[0017] [Second Embodiment] Next, the clock 1B of the second embodiment will be described with reference to Figure 7. Clock 1B is a mechanical clock in which the gear train is driven by a mainspring (not shown) as the movement 10B, and the speed is regulated by an escapement and regulating section having an escape wheel 51, an anchor 52, and a balance wheel 53. An example of the first components in clock 1B is the escape wheel 51 and the anchor 52, or the anchor 52 and the balance wheel 53. That is, sound is generated when the escape wheel 51 and the anchor 52 come into contact, and sound is also generated when the balance stone of the anchor 52 and the balance wheel 53 come into contact, so these components are the first components that generate sound.

[0018] The second component, formed from a magnesium alloy, relative to the first component which consists of the escape wheel 51, anchor 52, and balance wheel 53, is one or more components selected from the anchor support 61, balance support 62, base plate 11B, and a sun wheel (not shown). The anchor support 61 is a plate-shaped component that works in conjunction with the base plate 11B to position and support the anchor 52. Because it is located near the anchor 52 and overlaps with it in a plan view, and also holds the bearing that supports the axis of the anchor 52, sound and vibrations generated by the contact between the anchor 52 and the escape wheel 51 and balance wheel 53 can be transmitted to the anchor support 61, potentially causing it to vibrate as well. For this reason, forming the anchor support 61 from a magnesium alloy with high vibration absorption properties can suppress the vibration of the anchor support 61. The balance support 62 is a plate-shaped component that works in conjunction with the base plate 11B to position and support the balance wheel 53. Because it is located near the balance wheel 53 and overlaps with it in a plan view, and also holds the bearing that supports the balance staff, which is the axis of the balance wheel 53, there is a possibility that sound generated by the contact between the balance wheel 53 and the anchor 52 will be transmitted to the balance support 62, causing it to vibrate. For this reason, by forming the balance support 62 from a magnesium alloy with high vibration absorption properties, the vibration of the balance support 62 can be suppressed. Furthermore, the anchor 52 and balance wheel 53 do not rotate in only one direction, but in both clockwise and counterclockwise directions. Therefore, parts that rotate around an axis are not limited to parts that rotate in only one direction, but also include parts that rotate in both directions.

[0019] The base plate 11B overlaps with the escape wheel 51, anchor 52, and balance wheel 53 in a plan view, and is a component with a large surface area within the movement 10B. Furthermore, it is a component that holds the bearings that support the shafts of the escape wheel 51, anchor 52, and balance wheel 53. Therefore, sound generated by the contact between the escape wheel 51, anchor 52, and balance wheel 53 can be transmitted, and the base plate 11B may also vibrate. For this reason, by forming the base plate 11B from a magnesium alloy with high vibration absorption properties, the vibration of the base plate 11B can be suppressed. The date wheel, although not shown in the diagram, is a component with a large surface area within the movement 10B, similar to the first embodiment. It is a component that is rotated by the date wheel or the like and is not fixed by screws or the like, so it is a component that is prone to resonance when vibrations are transmitted. For this reason, sound generated by the contact between the escape wheel 51, anchor 52, and balance wheel 53 can be transmitted, and the date wheel may also vibrate. Therefore, by forming the date wheel from a magnesium alloy with high vibration absorption properties, the vibration of the date wheel can be suppressed.

[0020] Even for parts other than those mentioned above, if there are any parts that vibrate due to the sound transmitted when the escape wheel 51, anchor 52, and balance wheel 53 come into contact, the sound quality can be improved by forming them out of magnesium alloy. Furthermore, the clock 1B of the second embodiment includes a ratchet wheel 33B, a mainspring barrel 34B, and a hinge 37B. Therefore, in clock 1B as well, the ratchet wheel 33B and the hinge 37B become first components, while the first bridge 12B and the base plate 11B become second components that absorb vibrations caused by the sound generated by the contact of the ratchet wheel 33B and the hinge 37B. This configuration is the same as in the first embodiment, so a detailed explanation is omitted. Furthermore, in the case of clock 1B, if a rotor (not shown), pawl lever, and transmission wheel are provided for winding the mainspring, then, as in the first embodiment, the pawl lever and transmission wheel become first components, and the rotor holder (not shown), pawl lever retainer, base plate 11B, first receiver 12B, second receiver (not shown), and date wheel become second components.

[0021] [Effects of the second embodiment] According to the second embodiment, similar to the first embodiment, at least some of the components such as the escape wheel 51, anchor 52, balance wheel 53, and the anchor receiver 61, balance wheel receiver 62, base plate 11B, sun wheel, and first receiver 12B, which may vibrate due to sound propagation generated in the first components such as the escape wheel 51, anchor 52, balance wheel 53, and the hook 37B and square hole wheel 33B, are made of magnesium alloy as second components, thereby suppressing vibration of the second components. As a result, the impact on sound generated in the first components can be reduced, and the sound quality of the audible sound heard by the user can be improved.

[0022] [Differentiation] The term "clock" is not limited to electronically controlled mechanical clocks or mechanical clocks. For example, in an analog quartz clock that drives the gear train and hands by stepping the hands with a stepping motor, the gears repeatedly rotate and stop, causing the gears to collide and generate sound. Therefore, the gear train, which has multiple gears, can be considered the first component, and components that vibrate due to the sound generated by the first component, such as the base plate, gear train bridge, and date wheel, can be considered the second component. Furthermore, in a clock equipped with a striking mechanism that generates sound, such as a sonnerie or repeater, the striking mechanism can be considered the first component, and various receiving components, retaining components, the base plate, and the date wheel can be considered the second component. Furthermore, the first component that generates sound is not limited to components that generate sound through contact with other components, but may also be a component that has a sound-generating function, such as an electronic buzzer. It is not necessary to designate all parts that vibrate due to the sound generated by the first part as second parts; in particular, parts that have a significant impact on the sound generated by the first part should be designated as second parts. For example, if the gear train bearing and the rotor bearing are separate components, both the gear train bearing and the rotor bearing may be made of magnesium alloy, or only one of them may be made of magnesium alloy.

[0023] [summary] The clock of this disclosure comprises a first component that generates sound, and a second component formed of a metal mainly composed of magnesium, which absorbs vibrations caused by the sound generated by the first component. When sound generated from the first component propagates and causes the second component to vibrate, the sound generated in the first component is altered, affecting the audible sound heard by users, etc. However, in this disclosure, since the second component is formed of a metal mainly composed of magnesium, which has high vibration absorption properties, vibration of the second component can be suppressed, the impact on the sound generated in the first component can be reduced, and the sound quality of the audible sound can be improved.

[0024] In the clock according to this disclosure, the second component may be a component that overlaps at least a portion of the first component in a plan view as seen from the thickness direction of the clock. A component that overlaps with at least a portion of the first component in a plan view may resonate with sound generated in the first component as it propagates through the air. Therefore, if the component that overlaps with the first component in a plan view is designated as the second component, the vibration of the second component can be suppressed, thereby reducing its impact on the sound generated in the first component.

[0025] In the clock of this disclosure, the second component may be a flat plate-shaped component. In clock components, flat parts are prone to vibration when sound is transmitted. Therefore, if the second component is also a flat part, the vibration of the second component can be suppressed, reducing its impact on the sound generated by the first component.

[0026] In the clock of this disclosure, the first component may have a component that rotates around an axis, and the second component may be a component that holds a bearing that supports the axis. When a first component has a component that rotates around an axis, the component rotating in one or both directions may vibrate and generate sound when it comes into contact with other components. In this case, the vibration of the rotating component is transmitted to the component that holds the bearing via the axis of the rotating component and the bearing that supports this axis. Therefore, by making the component that holds the bearing a second component, the vibration of the second component can be suppressed, and the impact on the sound generated in the first component can be reduced.

[0027] In the clock of the present disclosure, the first component comprises a pawl lever and a drive wheel, and the second component may be a support component that supports a rotor. When the first component is a pawl lever and a drive wheel, the support component that supports the rotor weight often overlaps with the pawl lever and drive wheel in a plan view, and because it is a flat plate-shaped component, there is a possibility that sound generated by the contact between the pawl lever and drive wheel will propagate and cause vibration. For this reason, by making the support component that supports the rotor weight a second component, vibration of the support component that supports the rotor weight can be suppressed, and the impact on sound generated in the first component can be reduced.

[0028] In the clock of the present disclosure, the first component comprises a pawl lever and a transmission wheel, and the second component may be a pawl lever retainer that presses down on the pawl lever. When the first component is a claw lever and a drive wheel, the claw lever retainer often overlaps with the claw lever and drive wheel in a plan view, and may even come into direct contact with them. Furthermore, because it is a flat component, the sound generated by the contact between the claw lever and drive wheel can propagate and cause vibration. Therefore, by making the claw lever retainer a second component, the vibration of the claw lever retainer can be suppressed, reducing its impact on the sound generated in the first component.

[0029] In the clock of this disclosure, the second component may be a calendar wheel. Calendar wheels, such as the date wheel, occupy a large area within the movement and are not fixed with screws or other fasteners, so there is a possibility that sound generated in the first component will propagate and cause vibration. Therefore, by making the calendar wheel a second component, vibrations of the calendar wheel can be suppressed, reducing the impact on sound generated in the first component.

[0030] In the clock of the present disclosure, the first component is a balance wheel and an escapement, and the second component may be at least one of the balance wheel bridge and the escapement bridge. The balance wheel support and anchor support hold the bearings that support the axis of the balance wheel and anchor, and overlap with a portion of the balance wheel and anchor in a plan view. Therefore, sound generated by contact between the balance wheel and anchor can propagate and cause vibration. For this reason, by making at least one of the balance wheel support and anchor support a second component, vibration of the balance wheel support and anchor support can be suppressed, reducing the impact on sound generated by the first component. [Explanation of symbols]

[0031] 1...Clock, 1B...Clock, 10...Movement, 10B...Movement, 11...Base plate, 11B...Base plate, 12...First bridge, 12B...First bridge, 13...Second bridge, 21...Rotor, 22...Rotor bridge, 23...Bearing, 31...Pawl lever, 32...Transmission wheel, 33...Square hole wheel, 33B...Square hole wheel, 35...Pawl lever retainer, 37...Pawl, 37B...Pawl, 41...Date wheel, 51...Escape wheel, 52...Anchor, 53...Balance wheel, 61...Anchor bridge, 62...Balance bridge, 321...Bearing.

Claims

1. The first component that generates sound, A clock comprising a second component made of a metal primarily composed of magnesium, which absorbs vibrations caused by sound generated by the first component.

2. In the clock according to claim 1, The second component is a clock that overlaps with at least a portion of the first component in a plan view from the clock's thickness direction.

3. In the clock according to claim 1, The second component is a clock, which is a flat plate-shaped component.

4. In the clock according to claim 1, The first component has a part that rotates around an axis, The second component is a clock component that holds a bearing that supports the shaft.

5. In the clock according to claim 1, The first component has a claw lever and a transmission wheel, The second component is a clock, which is a support component that supports the rotor.

6. In the clock according to claim 1, The first component has a claw lever and a transmission wheel, The second component is a clock that holds down the claw lever.

7. In the clock according to claim 1, The second component is a clock, which is a calendar wheel.

8. In the clock according to claim 1, The first component is the balance wheel and anchor, The second component is a watch, which is at least one of the balance wheel bridge and the anchor bridge.

Images