Regulator, movement, and clock

Abstract

To provide a regulator pin capable of further improving clocking accuracy as compared with the prior art, and to provide a movement and a timepiece having the regulator pin.SOLUTION: A regulator pin 60 has a whisker bar 63. The whisker bar 63 includes: a pair of whisker bar bodies 85; and a whisker bar base part 84. The whisker bar base part 84 is formed so as to be integrated with the pair of whisker bar bodies 85 and is held by the regulator pin body 61. The whisker rod body 85 is arranged so as to sandwich an outer end part 23b of a hairspring 23 and is formed so as to include zirconia. An outer peripheral surface and an inner peripheral surface of the whisper bar 63 are formed by extrusion molding, and in the whisper bar 63, the whisker rod body 85 and the whisker bar base part 84 are integrally formed.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a hacking spring, a movement, and a clock.

Background Art

[0002] Conventionally, a configuration of a mechanical clock using a hairspring fixed at the center of a balance is known. In a mechanical clock, for example, the pace is adjusted by adjusting the effective length of the hairspring using a hacking spring, and further, various techniques for adjusting the isochronism (regulating) of the pace by adjusting the distance between the hairspring and the hairspring bar have been proposed.

[0003] For example, Patent Document 1 discloses a configuration of a hacking spring having a pair of hairspring bars that sandwich the outer end portion of the hairspring, and a hacking spring seat that can adjust the distance between the hairspring bars by rotation. The hairspring bars are formed of a wear-resistant material having a low coefficient of friction such as ruby or spinel. According to the technique described in Patent Document 1, by forming the hairspring bars of a wear-resistant material, wear of the hairspring bars can be suppressed. Thereby, it is said that changes in isochronism due to changes in the distance between the hairspring and the hairspring bars, changes in the pace due to the generation of wear powder, etc. can be suppressed, and the timekeeping accuracy can be improved.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the technology described in Patent Document 1, there was a risk that wear of the hairspring in contact with the hairspring bar could not be sufficiently suppressed. In other words, depending on the material of the hairspring bar, there was a risk that the hairspring would wear down. When the hairspring wears down, the distance between the hairspring and the hairspring bar changes. Also, wear particles may be generated between the hairspring bar and the hairspring bar, and these wear particles may adhere to the hairspring bar. As a result, similar to when the hairspring bar wears down, the isochronism of the balance wheel may be impaired, or the rate may change, potentially reducing the timing accuracy.

[0006] Therefore, the present invention aims to provide a regulator that can further improve timekeeping accuracy compared to the prior art, a movement equipped with this regulator, and a clock. [Means for solving the problem]

[0007] To solve the above problems, one embodiment of the present invention provides a regulator that is positioned to sandwich the outer end of the hairspring and comprises a hairspring rod whose body, at least the part that contacts the hairspring, is formed to contain zirconia. The hairspring bar comprises a pair of hairspring bar bodies and a hairspring bar base formed integrally with the pair of hairspring bar bodies and held by the regulator needle, wherein the inner circumferential surface of the hairspring bar body that abuts the hairspring and the inner circumferential surface of the hole formed in the hairspring bar base are formed to be the same shape and continuous in the longitudinal direction of the hairspring bar body. .

[0008] This configuration allows for a reduction in wear on both the hairspring and the hairspring by using a hairspring made of a composite material including zirconia, compared to conventional techniques where the hairspring is formed from ruby ​​or other metallic materials. In other words, it suppresses wear not only on the hairspring but also on the hairspring compared to conventional techniques. This further suppresses changes in the gap between the hairspring and the hairspring due to wear on the hairspring or hairspring, thereby suppressing changes in isochronism due to wear. Furthermore, it suppresses the adhesion of wear particles to the hairspring caused by wear on the hairspring. Therefore, it suppresses changes in rate due to the generation of wear particles, and stabilizes the rate compared to conventional techniques. Therefore, it is possible to provide a regulator that can further improve timing accuracy compared to conventional technology. Furthermore, since the pair of whisker rod bodies and whisker rod bases are integrally formed, the spacing between the pairs of whisker rods and the parallelism between the pairs of whisker rods can be maintained with high precision.

[0009] Furthermore, in the regulator, at least the whisker rod body contains 50% or more zirconia.

[0010] This configuration allows for the suppression of, for example, a decrease in bending strength due to a reduction in toughness, compared to cases where the zirconia content is less than 50%. Furthermore, it improves the machinability of the hairspring bar compared to cases where the zirconia content is less than 50%. Therefore, wear of the hairspring bar and hairspring can be effectively suppressed while maintaining strength and machinability.

[0013] Furthermore, in the regulator, the outer and inner surfaces of the whisker rod are formed by extrusion molding, and the whisker rod body and the whisker rod base are integrally formed.

[0014] This configuration allows the whisker bar body and whisker bar base to be formed simultaneously and integrally by extrusion molding. Therefore, manufacturing efficiency can be improved. Furthermore, compared to materials such as ruby ​​and spinel, zirconia has lower hardness and is less likely to damage the mold, making it easier to process by extrusion molding. Thus, manufacturability can be improved while making the most of the material's properties. Furthermore, since the inner circumferential surface of the hairspring rod, i.e., the part that contacts the hairspring, is formed by extrusion molding, it is easier to form a curved surface on the inner circumferential surface compared to forming the inner circumferential surface by, for example, machining. In addition, the surface of the inner circumferential surface can be formed smoothly. As a result, the inner circumferential surface of the hairspring rod that contacts the hairspring can be formed to an optimal shape without complicating the manufacturing process. Therefore, wear on the hairspring can be further reduced. In addition, more precise adjustment of the hairspring can be performed.

[0017] A movement according to one embodiment of the present invention comprises the above-described regulator and a balance wheel to which the hairspring is attached.

[0018] With this configuration, the movement is equipped with the aforementioned regulator, thus suppressing wear on the hairspring and balance bar. This suppresses changes in isochronism and rate due to wear. Therefore, it is possible to provide a high-performance movement equipped with an hour hand that can improve the timekeeping accuracy as compared with the prior art.

[0019] A clock according to one embodiment of the present invention includes the above-described movement.

[0020] According to this configuration, the clock has a movement equipped with the above-described hour hand. Therefore, it is possible to suppress the wear of the beard bar and the beard spring, and suppress the change in isochronism and the change in step due to wear. Therefore, it is possible to provide a high-precision clock equipped with an hour hand that can improve the timekeeping accuracy as compared with the prior art.

Effects of the Invention

[0021] According to the present invention, it is possible to provide an hour hand that can improve the timekeeping accuracy as compared with the prior art, a movement equipped with this hour hand, and a clock.

Brief Description of the Drawings

[0022] [Figure 1] An external view of a clock according to the first embodiment. [Figure 2] A plan view of the movement according to the first embodiment as viewed from the front side. [Figure 3] A plan view of the temperature receiving unit according to the first embodiment as viewed from the front side. [Figure 4] A perspective view of the temperature receiving unit according to the first embodiment. [Figure 5] A cross-sectional view taken along the line V-V of FIG. 3. [Figure 6] A perspective view of the beard bar according to the first embodiment as viewed from the front side. [Figure 7] A perspective view of the beard bar according to the first embodiment as viewed from the back side. [Figure 8] A plan view of the beard bar according to the first embodiment. [Figure 9] A perspective view of the temperature receiving unit according to the second embodiment. [Figure 10] A cross-sectional view of the temperature receiving unit according to the second embodiment. [Modes for carrying out the invention]

[0023] Embodiments of the present invention will be described below with reference to the drawings. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplication of these components may be omitted.

[0024] (First Embodiment) (clock) Figure 1 is an external view of the clock according to the first embodiment. The clock 1 is constructed by incorporating a movement 2, a dial 13 with markings indicating time information, and various hands (hour hand 14, minute hand 15, and second hand 16) into a clock case 12 having a case cover (not shown) and glass 11.

[0025] (Movement) Figure 2 is a plan view of the movement 2 according to the first embodiment, seen from the front. In Figure 2, some components may be omitted for clarity. In the following description, the side of the watch case 12 (see Figure 1) with the glass 11 (dial 13 side) will be referred to as the "back side" of the movement 2 with respect to the base plate 17 that constitutes the circuit board of the movement 2, and the side with the case lid (opposite side from the dial 13) will be referred to as the "front side" of the movement 2.

[0026] Movement 2 comprises a main plate 17, a front gear train (not shown) including a barrel wheel, second wheel, third wheel, and fourth wheel, and an escapement regulating mechanism 3 for controlling the rotation of the front gear train. The illustrated movement 2 is an example of a movement for an automatic winding watch equipped with a rotor (not shown). However, it is not limited to this case, and may also be a movement for a hand-wound watch using a winding stem 18. The second hand 16 shown in Figure 1 rotates based on the rotation of the fourth wheel and at a rotational speed regulated by the escapement governor 3, i.e., it rotates once per minute. The minute hand 15 rotates based on the rotation of the second wheel, or the rotation of the minute wheel which rotates in conjunction with the rotation of the second wheel, and at a rotational speed regulated by the escapement governor 3, i.e., it rotates once per hour. The hour hand 14 rotates based on the rotation of the barrel wheel which rotates in conjunction with the rotation of the second wheel via the date wheel, and at a rotational speed regulated by the escapement governor 3, i.e., it rotates once every 12 or 24 hours.

[0027] As shown in Figure 2, the escapement governor 3 comprises an escape wheel 19 and an anchor 20 that mesh with the fourth wheel, and a balance bearing unit 4. The anchor 20 escapes the escape wheel 19. The balance bearing unit 4 is equipped with a balance wheel 5 that operates regularly at a constant period.

[0028] (Tempura receiving unit) Figure 3 is a plan view of the lamp support unit 4 according to the first embodiment, viewed from the front. Figure 4 is a perspective view of the lamp support unit 4 according to the first embodiment. Figure 5 is a cross-sectional view along the VV line in Figure 3. As shown in Figures 3 to 5, the balance spring unit 4 includes a balance spring 5, a balance spring holder 6, a hairspring adjustment mechanism 7, and a regulator mechanism 8.

[0029] (attachment) The balance wheel 5 comprises a balance staff 21, a balance ring 22, and a hairspring 23. The balance staff 21 is rotatable about a central axis C. The balance staff 21 is rotatably supported by a balance support 6, which will be described in more detail later, via a bearing 31. In the following explanation, the direction along the central axis C of the pivot 21 is sometimes referred to as the axial direction, the direction perpendicular to the central axis C is sometimes referred to as the radial direction, and the direction around the central axis C is sometimes referred to as the circumferential direction. As shown in Figure 5, the balance wheel 22 comprises a hub portion 24 fixed to the balance staff 21 by press-fitting or the like, an annular rim portion 25 surrounding the hub portion 24 from the radially outer side, and a connecting portion 26 connecting the hub portion 24 and the rim portion 25.

[0030] The hairspring 23 is positioned between the balance staff 21 and the balance wheel 22. The hairspring 23 is a flat hairspring that is spiral-shaped when viewed from the axial direction, wound along the Archimedes curve. The inner end 23a of the hairspring 23 is connected to the balance staff 21. The outer end 23b of the hairspring 23 is connected to the hairspring holder 41 (see Figure 3) of the hairspring adjustment mechanism 7, which will be described in more detail later. The outermost part of the hairspring 23, including the outer end 23b, is an arc-shaped portion 23c (see Figure 3) that bulges radially outward.

[0031] The balance staff 21 rotates in forward and reverse directions around the central axis C with a constant oscillation period due to power transmitted from the hairspring 23. One end 21a (front end) of the balance staff 21 is supported by the balance support 6 via a bearing 31, and the other end 21b (back end) is supported by a bearing (not shown) formed in the base plate 17 (see Figure 2). A cylindrical swing seat 28, which is linked to the anchor 20 described above, is externally mounted on the other end 21b of the balance staff 21.

[0032] (Tempura) As shown in Figure 5, the balance support 6 is positioned on the front side of the balance 5 in the axial direction. The balance support 6 has a mounting base 30 and a bearing 31. As shown in Figures 3 and 4, the mounting base 30 extends radially from the central axis C to one side when viewed from the axial direction. The mounting base 30 is formed in a flat plate shape with the axial direction as the thickness direction. The shape of the end of the mounting base 30 in the extending direction is formed in an arc shape to match the shape of the watch case 12 (see also Figure 2). Multiple mounting holes 32 are formed in the mounting base 30 that penetrate in the axial direction. The balance wheel support unit 4 is fixed to the base plate 17 (see Figure 2) via fixing screws (not shown) inserted through each of the mounting holes 32. As shown in Figure 5, the mounting base 30 has a central hole 33 formed coaxially with the central axis C. The portion of the mounting base 30 that forms the outer circumference of the central hole 33 is a bearing cylinder portion 34. The bearing cylinder portion 34 is formed one step lower on the back side relative to the mounting base 30.

[0033] The bearing 31 is a so-called vibration-resistant bearing and comprises a bearing frame 35, a bore stone 36, and a support stone 37. The bearing frame 35 is press-fitted into the bearing cylinder 34 from the axial front side. As a result, the bearing frame 35 is positioned coaxially with the central axis C and fixed to the balance support 6. The bearing 36 is mounted within the bearing frame 35. The bearing 36 rotatably supports one end 21a of the balance staff 21. The support stone 37 is placed on top of the hole stone 36 and supports one end 21a of the balance staff 21 from the front side. A support stone retaining spring 38 (see Figure 3) is placed on top of the support stone 37 to bias the support stone 37 toward the balance staff 21. Note that the configuration of the bearing 31 is just one example, and is not limited to the above configuration, as long as it can rotatably support the balance staff 21.

[0034] (hairspring adjustment mechanism) As shown in Figures 3 and 4, the hairspring adjustment mechanism 7 comprises the hairspring 23, the hairspring holder 40, the hairspring holder 41, and the screw member 42.

[0035] The whisker support 40 is connected to the balance wheel 6. The whisker support 40 is fitted onto the bearing cylinder portion 34 of the balance wheel 6. The radial inner end of the whisker support 40 is formed in a C shape when viewed from the axial direction in a plan view. The radial inner end of the whisker support 40 slides against the bearing cylinder portion 34 when a predetermined rotational torque is applied. As a result, the whisker support 40 is rotatable around the central axis C relative to the bearing cylinder portion 34.

[0036] A whisker holder insertion hole 43 and a fastening hole 44 are formed at the radially outer end of the whisker holder 40. The whisker holder insertion hole 43 penetrates the whisker holder 40 along a first axis O1 parallel to the central axis C. The fastening hole 44 is provided on the side surface of the radially outer end of the whisker holder 40. The fastening hole 44 is a hole whose depth is in the direction intersecting the first axis O1 (radial direction) and communicates with the whisker holder insertion hole 43. An internal thread is formed on the inner circumference of the fastening hole 44.

[0037] The hairspring holder 41 is inserted into the hairspring holder insertion hole 43 of the hairspring holder support 40. The hairspring holder 41 is mounted coaxially with the first axis O1. The hairspring holder 41 is rotatably supported about the first axis O1. The outer end 23b of the hairspring 23 is fixed to the back end of the hairspring holder 41.

[0038] The screw member 42 is fitted into the fastening hole 44. The screw member 42 is, for example, a bolt having a male threaded portion on its outer surface. A groove (not shown) into which a tool such as a screwdriver can be inserted is formed on the radially outer end face of the screw member 42. By tightening the screw member 42 so that it moves radially inward, the whisker holder 41 is fixed in a predetermined position to the whisker holder support 40. On the other hand, by loosening the screw member 42 so that it moves radially outward, the whisker holder 41 becomes rotatable relative to the whisker holder support 40, and the rotation angle of the whisker holder 41 can be adjusted.

[0039] (Rapid needle mechanism) The regulator mechanism 8 includes a fine-adjustment regulator lever 50 and a regulator 60. As shown in Figures 3 and 4, the fine-adjustment regulator lever 50 is mounted on the bearing frame 35 (see Figure 5) so as to be rotatable around the central axis C. The fine-adjustment regulator lever 50 has a fitting portion 51 that fits into the bearing frame 35, and an engaging fork 52 that extends radially outward from the fitting portion 51 and is formed in a bifurcated shape that branches circumferentially. An adjustment pin 53 is disposed inside the engaging fork 52. The adjustment pin 53 is rotatably fitted into the balance spring 6. The adjustment pin 53 has a head portion 56 located on the front side and a shaft portion 57 that extends from the head portion 56 to the back side. The shaft portion 57 is rotatably fitted into the balance spring 6. The head portion 56 is eccentrically positioned with respect to the shaft portion 57. The head portion 56 is in slidable contact with the inner surface of the engaging fork 52. Therefore, by rotating the adjustment pin 53 relative to the balance spring holder 6, the entire fine adjustment regulator lever 50 can be rotated around the central axis C of the balance spring 5.

[0040] As shown in Figures 3 to 5, the regulator 60 comprises a regulator body 61, a whisker rod support 62, a whisker rod 63, and a whisker rod holder 64. The regulator body 61 is rotatable around the central axis C. The regulator body 61 has a base portion 81 that surrounds the fitting portion 51 of the fine-adjustment regulator lever 50 from the radially outer side, and a regulator arm 82 that extends radially outward from the base portion 81.

[0041] The whisker bar support 62 is attached to the regulator arm 82 of the regulator body 61, overlapping the back surface of the regulator arm 82. The whisker bar support 62 functions as a connecting member for attaching the whisker bar 63 and whisker bar holder 64, which will be described later, to the regulator body 61.

[0042] Figure 6 is a perspective view of the whisker bar 63 according to the first embodiment, viewed from the front. Figure 7 is a perspective view of the whisker bar 63 according to the first embodiment, viewed from the back. Figure 8 is a plan view of the whisker bar 63 according to the first embodiment, viewed from the back.

[0043] As shown in Figure 5, the whisker bar 63 is attached to the back end of the whisker bar support 62. As shown in Figures 6 to 8, the whisker bar 63 has a whisker bar base 84 and a pair of whisker bar bodies 85. The whisker bar base 84 is the part held by the whisker bar support 62 (see Figure 5). The whisker bar base 84 is formed in a cylindrical shape with a second axis O2 parallel to the central axis C as its center. The whisker bar base 84 has an irregularly shaped hole 65 that penetrates in the direction of the second axis O2. Specifically, in a plan view, the hole 65 is formed in a gourd shape having a pair of protrusions 65a projecting toward each other from both ends of the diameter of a virtual circle centered on the second axis O2, and a pair of arc-shaped parts 65b connecting the pair of protrusions 65a and following the virtual circle.

[0044] The hairspring body 85 is integrally formed with the hairspring base 84. The hairspring body 85 extends from the hairspring base 84 toward the axial rear side. In a plan view, a pair of hairspring bodies 85 are provided, each corresponding to a position that overlaps with a pair of protrusions 65a. A gap is provided between the pair of hairspring bodies 85. As shown in Figures 4 and 5, the hairspring 23 is positioned in the gap between the pair of hairspring bodies 85. Since the pair of hairspring bodies 85 have a symmetrical shape, the following description will focus on one hairspring body 85, omitting the description of the other.

[0045] As shown in Figures 7 and 8, the whisker bar body 85 is formed in a columnar shape having an outer peripheral surface 66 facing radially outward, an inner peripheral surface 67 facing radially inward, and a pair of side surfaces 68 connecting the outer peripheral surface 66 and the inner peripheral surface 67. The outer peripheral surface 66 has a first outer peripheral surface 88 that is continuous with the outer peripheral surface of the whisker bar base 84, and a second outer peripheral surface 89 that is inclined with respect to the first outer peripheral surface 88. The second outer peripheral surface 89 is inclined such that its outer diameter decreases as it moves toward the tip (the direction away from the whisker bar base 84). The inner peripheral surface 67 of the whisker bar body 85 is continuous with the convex portion 65a of the whisker bar base 84. The inner peripheral surface 67 is formed to have the same shape as the convex portion 65a in a plan view. The inner peripheral surface 67 is a curved surface that protrudes radially inward. The pair of side surfaces 68 connect the circumferential ends of the outer surface 66 and the circumferential ends of the inner surface 67, respectively.

[0046] The whisker rod 63 described above is formed by extrusion molding, which creates the outer and inner surfaces of the whisker rod 63, and integrally forms the whisker rod body 85 and the whisker rod base 84. In particular, the convex portion 65a of the whisker rod base 84 and the inner surface 67 of the whisker rod body 85 are continuous in the axial direction and are formed to have the same shape in plan view, thus enabling processing by extrusion molding. Specifically, first, the outer and inner surfaces of the whisker rod 63 are formed into a long rod shape by extrusion molding. Furthermore, it is cut to the required length and an inclined second outer surface 89 is processed. Finally, a pair of side surfaces 68 are formed by removal processing. In this way, the whisker rod 63 described above is formed. In addition, by processing by extrusion molding, it is possible to form the inner surfaces 67, which are the faces of the pair of whisker rod bodies 85, as smooth curved surfaces.

[0047] The hairspring bar 63 is formed such that at least the hairspring bar body 85 that contacts the hairspring contains zirconia. In this embodiment, the hairspring bar base 84 and the hairspring bar body 85 are formed integrally, so the entire hairspring bar 63 is formed to contain zirconia. The hairspring bar 63 is formed of, for example, a ceramic material. The hairspring bar 63 is formed to contain, for example, 50% or more zirconia.

[0048] As shown in Figure 5, the hairspring holder 64 is attached to the hairspring support 62. A portion of the hairspring holder 64 is positioned below the arc-shaped portion 23c of the hairspring 23. As a result, the hairspring holder 64 is positioned to face the hairspring 23 in the axial direction, with the hairspring 23 in between it and the hairspring bar 63.

[0049] (Effect, Action) Next, the functions and effects of the regulator 60, movement 2, and clock 1 described above will be explained. According to the regulator 60 of this embodiment, the regulator 60 includes a hairspring 63 in which at least the hairspring body 85 that contacts the hairspring 23 is formed to contain zirconia. By using a hairspring 63 made of a composite material containing zirconia, the amount of wear on the hairspring 63 and the hairspring 23 can be reduced compared to the conventional technology in which the hairspring is formed from ruby ​​or other metal materials. In other words, compared to the conventional technology, wear on not only the hairspring 63 but also the hairspring 23 can be suppressed. This further suppresses changes in the gap between the hairspring 23 and the hairspring 63 due to wear on the hairspring 63 or the hairspring 23, and suppresses changes in isochronism due to wear. Furthermore, it is possible to suppress the adhesion of wear particles to the hairspring 63 due to wear on the hairspring 23. Therefore, changes in rate due to the generation of wear particles can be suppressed, and the rate can be stabilized compared to the conventional technology. Therefore, it is possible to provide a regulator 60 that can further improve timing accuracy compared to conventional technology.

[0050] The hairspring bar body 85 contains 50% or more zirconia. This suppresses, for example, the decrease in bending strength due to a decrease in toughness, compared to cases where the zirconia content is less than 50%. In addition, the machinability of the hairspring bar body is improved compared to cases where the zirconia content is less than 50%. Therefore, wear of the hairspring bar and hairspring can be effectively suppressed while maintaining strength and machinability.

[0051] Each whisker bar 63 comprises a pair of whisker bar bodies 85 and a whisker bar base 84 formed integrally with the pair of whisker bar bodies 85 and held by the regulator needle 61. Since the pair of whisker bar bodies 85 and the whisker bar base 84 are integrally formed, the spacing between the pair of whisker bars 63 and the parallelism between the pair of whisker bars 63 can be maintained with high precision.

[0052] The whisker bar 63 is formed by extrusion molding. This allows the whisker bar body 85 and the whisker bar base 84 to be formed simultaneously and integrally by extrusion molding. Therefore, manufacturing efficiency can be improved. In addition, compared to materials such as ruby ​​and spinel, zirconia has lower hardness and is less likely to damage the mold, making it easier to process by extrusion molding. Therefore, manufacturability can be improved while making use of the material's properties. Furthermore, since the inner circumferential surface of the hairspring bar 63 (the inner circumferential surface 67 of the hairspring bar body 85), i.e., the part that contacts the hairspring 23, is formed by extrusion molding, it is easier to form a curved surface on the inner circumferential surface 67 compared to forming the inner circumferential surface 67 by, for example, cutting. Also, the surface of the inner circumferential surface 67 can be formed smoothly. As a result, the inner circumferential surface 67 of the hairspring bar 63 that contacts the hairspring 23 can be formed into an optimal shape without complicating the manufacturing process. Therefore, wear on the hairspring 23 can be further reduced. In addition, more precise adjustment can be performed.

[0053] Movement 2 comprises the aforementioned regulator 60 and a balance wheel 5 to which the hairspring 23 is attached. Since movement 2 is equipped with the aforementioned regulator 60, wear of the hairspring bar 63 and hairspring 23 can be suppressed. This suppresses changes in isochronism and rate due to wear. Therefore, a high-performance movement 2 equipped with a regulator 60 that can further improve timing accuracy compared to conventional technology can be provided.

[0054] The clock 1 has a movement 2 equipped with the regulator 60 described above. Therefore, wear of the hairspring bar 63 and hairspring 23 can be suppressed, and changes in isochronism and rate due to wear can be suppressed. Therefore, it is possible to provide a high-precision clock 1 equipped with a regulator 60 that can further improve the timing accuracy compared to conventional technology.

[0055] (Second Embodiment) Next, a second embodiment of the present invention will be described. Figure 9 is a perspective view of the temperature support unit 204 according to the second embodiment. Figure 10 is a cross-sectional view of the temperature support unit 204 according to the second embodiment. Figure 10 corresponds, for example, to a cross-sectional view along the VV line in Figure 3. The second embodiment differs from the first embodiment described above in that the whisker bar base 284 and the whisker bar body 285 are provided separately.

[0056] As shown in Figures 9 and 10, in the second embodiment, the whisker bar 263 has a whisker bar base 284 and a pair of whisker bar bodies 285. The whisker bar base 284 is attached to the regulator arm 84 of the regulator body 61. In other words, the whisker bar base 284 in the second embodiment also functions as the whisker bar support 62 (see Figure 5) in the first embodiment. A pair of whisker stick bodies 285 are each attached to a whisker stick base 284. Each whisker stick body 285 is formed in a cylindrical shape. The whisker stick bodies 285 are formed to contain zirconia. The pair of whisker stick bodies 285 are attached to the whisker stick base 284 with a gap between them.

[0057] According to the second embodiment, since the pair of hairspring bodies 285 and hairspring bases 284 are constructed separately, for example, the hairspring bodies 285 and hairspring bases 284 can be made from different materials. This reduces wear on the hairspring 263 and hairspring 23 while improving the versatility of the hairspring 263.

[0058] It should be noted that the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, an example was given in which the hole 65 of the hairspring base 84 is formed in a gourd shape, but it is not limited to this. The shape of the hole in the hairspring base 84 and the shape of the hairspring body 85 are such that the hairspring base 84 and the hairspring body 85 can be integrally formed by extrusion molding and the portion that the hairspring 23 contacts (inner circumferential surface 67) has at least a curved surface. The shape of the hairspring 63 is not limited to the shape shown in the drawings.

[0059] The material of the whisker stick body 85,285 may be a ceramic material containing zirconia, or a metal material containing zirconia.

[0060] Furthermore, without departing from the spirit of the present invention, the components in the embodiments described above may be replaced with well-known components, and the embodiments described above may be combined as appropriate. [Explanation of Symbols]

[0061] 1 Clock 2 Movements 5 tempura 23. Whiskers 23b (Outer end of hairspring) 60 Adjustment needle 61 Regulator Needle 63,263 whiskers 84,284 whisker barb base 85,285 Beard Stick Main Unit

Claims

1. The hairspring is positioned to sandwich the outer end of the hairspring, and the hairspring rod body, which is at least in contact with the hairspring, is formed to contain zirconia. The aforementioned whisker stick is, A pair of whisker stick bodies, It has a whisker base that is formed to be integrated with a pair of whisker bodies and held by a regulator needle body, A regulator is formed such that the inner circumferential surface of the hairspring body that contacts the hairspring and the inner circumferential surface of the hole formed in the base of the hairspring body are the same shape and continuous in the longitudinal direction of the hairspring body.

2. The regulator according to claim 1, wherein at least the whisker stick body contains 50% or more zirconia.

3. The regulator according to claim 1, wherein the outer and inner surfaces of the whisker rod are formed by extrusion molding, and the whisker rod body and the whisker rod base are integrally formed.

4. A regulator according to any one of claims 1 to 3, The balance wheel to which the aforementioned hairspring is attached, A movement equipped with [this feature].

5. A clock comprising the movement described in claim 4.

Images