JP2017156309A - Spiral spring, barrel drum vehicle, movement, clock, and method for manufacturing spiral spring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spiral spring capable of making lubricant oil be easily reside in a barrel drum vehicle, a movement, a clock, and a method for manufacturing the spiral spring.SOLUTION: A spiral spring 50A includes a spiral spring body 51A composed of a slender plate body having elasticity. The spiral spring body is a spiral shape and accommodated in a barrel drum vehicle. On an outside surface of the spiral spring body 51A, a recess 54A capable of holding lubricant oil is formed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a mainspring, a barrel complete, a movement, a timepiece, and a method for manufacturing the mainspring.

  For example, a timepiece using a power spring has a mainspring housed in a barrel complete. The mainspring is wound up in the barrel, and the barrel is rotated by unwinding the wound mainspring. When the mainspring is unwound, the mainspring and the barrel wheel or the mainsprings may rub. When the mainsprings or the mainspring and the barrel are rubbed, friction is generated, and the power applied to the barrel may be smaller than a predetermined magnitude. Further, the mainspring may be worn by rubbing with the mainsprings or with the barrel complete.

  In order to prevent friction and wear caused by rubbing between the mainsprings or between the mainsprings and the main barrel and the barrels, conventionally, lubricating oil has been injected into the barrels to suppress rubbing between the mainsprings or between the mainsprings and the barrels ( For example, see Patent Document 1). Alternatively, an organic film such as a Teflon (registered trademark) film is formed on the surface of the mainspring so as to enhance the self-lubricity.

International Publication No. 2003/054637

  However, when lubricating oil is injected into the barrel complete, it is required to retain the lubricating oil inside the barrel complete. For this reason, it is necessary to cover the barrel, and the thickness of the barrel is sometimes increased. Even if an organic film is formed, it is difficult to improve the adhesion of the organic film to the mainspring. Further, the formation of the organic film on the mainspring is performed after brazing into the shape of the mainspring. For this reason, the effort concerning the film-forming of an organic film was much much.

  Therefore, the problem to be solved by the present invention is to provide a mainspring, a barrel wheel, a movement, a timepiece, and a method for manufacturing the mainspring, which can make lubricating oil easily stay in the barrel wheel.

  A mainspring according to the present invention includes a mainspring body that is elastic and has a spiral shape and is configured by a plate-like body that is housed in a barrel car. The outer surface of the mainspring main body can hold a lubricating material. A recess is formed.

  In the mainspring according to the present invention, a recess capable of holding the lubricating material is formed on the outer surface of the mainspring main body. Since the concave portion is formed on the outer surface of the mainspring main body, for example, lubricating oil can be retained on the outer surface of the mainspring main body as the lubricating material. Further, in a state where the mainspring main body is housed in the barrel complete, the lubricating oil can be easily retained in the barrel complete.

  In the mainspring, the concave portion may be formed on a side end surface of the mainspring main body along a longitudinal direction of the mainspring main body.

  By forming a recess along the longitudinal direction of the mainspring main body on the side end face of the mainspring main body, it is possible to make it easier to retain lubricating oil between the mainspring main body and the barrel when the mainspring is stored. it can.

  In the mainspring, the concave portion may be formed on a main surface of the mainspring main body.

  The main surface of the main body of the mainspring is formed with recesses, so that when the mainspring is wound in the barrel, the lubricating oil stays between the mainsprings to reduce the frictional force between the mainspring surfaces. Can do.

  In the mainspring, the concave portions may be arranged at equal intervals.

  By arranging the recesses at equal intervals, it is possible to impart lubricity evenly to the surface of the mainspring.

  The mainspring may further include a lubricating metal housed in the mainspring main body, and the lubricating metal may be formed of a material having a lower coefficient of friction than the mainspring main body.

  By providing the lubricating metal, the amount of the lubricant can be reduced or the lubricant can be eliminated.

  The barrel complete according to the present invention is characterized in that the mainspring is stored therein. Moreover, the movement which concerns on invention is equipped with said barrel complete car, It is characterized by the above-mentioned. In addition, a timepiece according to the present invention includes the above-described movement.

  According to the barrel wheel, the movement, and the timepiece according to the present invention, the lubricating oil can be easily retained in the barrel wheel.

  A method for manufacturing a mainspring according to the present invention is a method for manufacturing the mainspring as described above, wherein a plurality of mainspring main bodies are laminated, and a plurality of the mainspring main bodies are diffusion-bonded to form the mainspring main body. It is characterized by.

  In the mainspring manufacturing method, the mainspring main body is formed by diffusion-bonding a plurality of the mainspring main body base materials. For this reason, it is possible to perform processing with high accuracy even for the minimal portion of the mainspring main body. Therefore, the concave portion can be easily formed on the outer surface of the mainspring.

  According to the mainspring, the barrel wheel, the movement, the timepiece, and the method for manufacturing the mainspring according to the present invention, it is possible to make the lubricating oil easily stay in the barrel wheel.

It is a top view of the movement front side in the embodiment of the present invention. It is a top view inside a barrel complete. (A-1) is a partial front view of the mainspring according to the first embodiment, (A-2) is a side sectional view of the mainspring according to the first embodiment, and (B-1) is a second sectional view of the mainspring. The partial front view of the mainspring which concerns on embodiment, (B-2) is a sectional side view of the mainspring which concerns on 2nd Embodiment. (A-1) is a partial front view of the mainspring according to the third embodiment, (A-2) is a side sectional view of the mainspring according to the third embodiment, and (B-1) is the fourth The partial front view of the mainspring which concerns on embodiment, (B-2) is a sectional side view of the mainspring which concerns on 4th Embodiment. (A-1) is a partial front view of the mainspring according to the fifth embodiment, (A-2) is a side sectional view of the mainspring according to the fifth embodiment, and (B-1) is the sixth The partial front view of the mainspring which concerns on embodiment, (B-2) is a sectional side view of the mainspring which concerns on 6th Embodiment. (A-1) is a partial front view of the mainspring according to the seventh embodiment, (A-2) is a side sectional view of the mainspring according to the seventh embodiment, and (B-1) is the eighth The partial front view of the mainspring which concerns on embodiment, (B-2) is a sectional side view of the mainspring which concerns on 8th Embodiment. (A-1) is a partial front view of the mainspring according to the ninth embodiment, (A-2) is a side sectional view of the mainspring according to the ninth embodiment, and (B-1) is the tenth aspect. The partial front view of the mainspring which concerns on embodiment, (B-2) is a sectional side view of the mainspring which concerns on 10th Embodiment. (A-1) is a partial front view of the mainspring according to the eleventh embodiment, (A-2) is a side sectional view of the mainspring according to the eleventh embodiment, and (B-1) is a twelfth view. A partial front view of the mainspring according to the embodiment, (B-2) is a side sectional view of the mainspring according to the twelfth embodiment. (A-1) is a partial front view of the mainspring according to the thirteenth embodiment, and (A-2) is a side sectional view of the mainspring according to the thirteenth embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
First, the first embodiment will be described. In describing the first embodiment, first, the mechanical timepiece 1 will be described. FIG. 1 is a plan view of the movement front side in the embodiment of the present invention. In the following description, in order to facilitate understanding of the invention, the illustration is simplified by omitting some of the components as appropriate, simplifying the shape, changing the scale, and the like.

  As shown in FIG. 1, the mechanical timepiece 1 according to the present embodiment includes a movement 10 and a casing (not shown) that houses the movement 10. The movement 10 has a ground plane 11 constituting a substrate. A dial (not shown) is arranged on the back side of the main plate 11. A train wheel incorporated on the front side of the movement 10 is referred to as a front train wheel, and a train wheel incorporated on the back side of the movement 10 is referred to as a back train wheel. A winding stem guide hole 11a is formed in the base plate 11, and a winding stem 12 is rotatably incorporated therein. The winding stem 12 is positioned in the axial direction by a switching device having a setting lever 13, a yoke 14, a yoke spring 15 and a back presser 16. In addition, a chichi wheel 17 is rotatably provided on the guide shaft portion of the winding stem 12.

  Under such a configuration, the winding stem 12 is rotated in a state where the winding stem 12 is in the first winding stem position (0th stage) closest to the inside of the movement 10 along the rotation axis direction. Then, the hour wheel 17 rotates through the rotation of the spell wheel (not shown). And when this chi-wheel 17 rotates, the round hole wheel 20 which meshes with this rotates. And when this round hole wheel 20 rotates, the square wheel 21 which meshes with this rotates. Further, when the square hole wheel 21 rotates, the mainspring (power source) (not shown) housed in the barrel complete 22 is wound up.

  The front train wheel of the movement 10 includes a second wheel 25, a third wheel 26, and a fourth wheel 27 in addition to the barrel wheel 22 described above, and performs a function of transmitting the rotational force of the barrel wheel 22. . Further, an escapement mechanism 30 and a speed adjusting mechanism 31 for controlling the rotation of the front wheel train are arranged on the front side of the movement 10.

  The center wheel 25 is a gear that meshes with the barrel complete 22. The third wheel 26 is a gear that meshes with the second wheel 25. The fourth wheel 27 is a gear that meshes with the third wheel 26. The escapement mechanism 30 is a mechanism that controls the rotation of the front wheel train described above, and a escape wheel 35 that meshes with the fourth wheel 27 and an ankle 36 that causes the escape wheel 35 to escape and rotate regularly. And. The speed control mechanism 31 is a mechanism for controlling the above-described escapement mechanism 30 and includes a balance 40.

  FIG. 2 is a plan view of the inside of the barrel complete. As shown in FIG. 2, the mainspring 50 is accommodated in the barrel complete 22 in the movement 10. The barrel complete 22 includes a barrel full 22A and a barrel case 22B. The mainspring 50 is a so-called power mainspring and is formed of an elongated plate-like body having elasticity. The mainspring 50 is housed in the barrel box case 22B and is wound around the barrel box 22A in a spiral shape.

  The barrel case 22B includes a disk-shaped bottom surface portion and a circumferential portion erected along the side edge of the bottom surface portion. The mainspring 50 is in contact with the bottom surface portion of the barrel case 22B and is enclosed in the circumferential portion and stored in the barrel case 22B. The surface on the opposite side of the bottom portion of the barrel case 22B beyond the circumferential portion is an open surface. The opening surface is left open without being provided with a lid or the like. A square wheel 21 shown in FIG. 1 is attached so as to cover the central portion of the opening surface.

  When a crown (not shown) attached to the winding stem 12 is wound, the mainspring 50 is wound around the barrel complete 22A. A force for unwinding the mainspring 50 acts on the outside of the mainspring 50 wound around the barrel complete 22A, and the barrel case 22B is rotated by the unwinding force of the mainspring 50.

  Next, the details of the mainspring of the present embodiment will be described with reference to FIG. In the following description, the mainspring 50 will be described as a mainspring 50A. 3A-1 is a partial front view of the mainspring according to the first embodiment, and FIG. 3A-2 is a side sectional view of the mainspring according to the first embodiment. As shown in FIGS. 3A-1 and 3A-2, the mainspring 50A includes a mainspring main body 51A.

  The mainspring main body 51A is made of a metal such as a cobalt (Co) based alloy, iron (Fe), or steel, and has elasticity. The mainspring main body 51A includes a main surface 52A and a side end surface 53A. The main surface 52A has a long shape extending in the left-right direction in FIG. In FIG. 3 (A-1), description of the left and right sides of the mainspring main body 51A is omitted. Both end sides in the longitudinal direction of the mainspring main body 51A (upper and lower sides in FIG. 3A-1) serve as side end surfaces 53A.

  On both side end surfaces 53A of the mainspring main body 51A, recesses 54A capable of holding lubricating oil as a lubricating material are formed. As shown in FIG. 3 (A-2), the recess 54A bites inwardly of the mainspring main body 51A at a substantially central position in the front-rear direction of the side end surface 53A, and extends along the extending direction of the mainspring main body 51A. As each is formed.

  When the mainspring 50A is housed in the barrel complete 22 shown in FIG. 2, one of the side end faces 53A of the mainspring main body 51A is arranged on the bottom side of the barrel complete, and the other side end face 53A is the opening side of the barrel complete 22 Placed in. Further, when the mainspring 50A is wound around the barrel complete 22A of the barrel complete 22, the main surface 52A of the mainspring main body 51A comes into contact with the back surface of the mainspring main body 51A.

  Next, the operation and effect of the mechanical timepiece 1 including the mainspring 50A according to the present embodiment will be described. In the mechanical timepiece 1 according to this embodiment, since the concave portion 54A is formed on the side end surface 53A of the mainspring 50A, the concave portion formed on the side end surface 53A when lubricating oil is injected inside the barrel wheel 22. 54A becomes an oil sump. For this reason, the lubricating oil can be retained on the side end face 53A corresponding to the outer surface of the mainspring main body 51A. In addition, in a state where the mainspring main body 51 </ b> A is housed in the barrel complete 22, the lubricating oil can be easily retained in the barrel complete 22.

  Further, since the lubricating oil can be easily retained in the barrel complete 22, the lubricity between the barrel complete 22 and the mainspring 50 </ b> A can be maintained high even if the amount of lubricating oil injected into the barrel complete 22 is reduced. . Therefore, since the amount of lubricating oil injected into the barrel complete 22 can be reduced, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing a lid member on the barrel complete 22.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, the thickness of the barrel complete 22 can be reduced. For this reason, it can contribute to thickness reduction of the movement 10. FIG. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50A, the situation where an organic film peels can be prevented. Further, it is possible to save time and labor required for forming the organic coating.

  Next, a method for manufacturing the mainspring 50A will be described. The mainsprings 50B to 50M shown in the following embodiments are also manufactured by the same manufacturing method. As shown in FIG. 3A-2, the mainspring main body 51A in the mainspring 50A is formed by laminating a plurality of foil-shaped mainspring main bodies. In laminating the plurality of main body main bodies, diffusion bonding is performed in the present embodiment. The main body 51A can be manufactured by diffusion bonding using, for example, a 3D printer having a diffusion bonding function.

  When manufacturing the mainspring main body 51A, a plurality of mainspring main bodies are prepared. The main body main body is divided into three layers of an upper layer, an intermediate layer, and a lower layer in the thickness direction of the main spring main body 51A. A narrow base material is used for the intermediate layer, and the upper layer and the lower layer are more than the intermediate layer. A wide substrate is used. About these mainspring main body base materials, the mainspring main body base material arrange | positioned with an upper layer and a lower layer is arrange | positioned so that it may protrude by the substantially same length to the side of the mainspring main body base material arrange | positioned at an intermediate | middle layer, respectively.

  When a plurality of mainspring main bodies are arranged in this way, the plurality of mainspring main bodies are diffusion bonded. Diffusion bonding of a plurality of mainspring body base materials is performed by the following procedure. First, a plurality of mainspring base materials are pressed against the fixing member with a constant pressure. On the other hand, the electric energy from the ultrasonic oscillator is converted into vibration energy by the ultrasonic vibrator and is expanded to a predetermined amplitude by the horn.

  The vibration expanded by the horn is applied at the horn tip portion to the plurality of main body main bodies pressed against the fixing material. In multiple mainspring main bodies to which vibration is applied, frictional heat is generated between metals, and oxides and organic coatings on the surface of the mainspring main body are destroyed and scattered by vibration energy. The member becomes a clean metal surface. By continuously applying this vibration to a plurality of main body main bodies, the main body main bodies are joined together, and finally, as shown in FIG. Generated.

  Diffusion bonding is a bonding in which solid-phase bonding is performed at a temperature considerably lower than the melting point, and since it is difficult for a structural change due to heat generation to occur in the mutual metal to be bonded, the mutual metal can be firmly bonded. . Therefore, the mainspring main body 51A can be manufactured in a state in which a plurality of mainspring main bodies are firmly bonded by diffusion bonding the mainspring main body to form the mainspring main body. Solid phase bonding refers to bonding by atomic bonding of mutual metals by inducing atomic diffusion.

  Diffusion bonding is performed by laminating a plurality of mainspring base materials. For this reason, the shape of mainspring main body 51A can be easily shape | molded by adjusting the shape of a mainspring main body base material. In the present embodiment, as the main body main body of the main body used for the intermediate layer, the main body main body of the narrower width than the main body of the main spring used for the upper layer and the lower layer is used. Can be formed.

  Further, in the diffusion bonding, dissimilar materials can be bonded. In the present embodiment, the main body 51A is formed using only one type of material, specifically, a cobalt (Co) -based alloy, iron (Fe), steel, or the like, but the mainspring is formed using a plurality of materials. The main body 51A can also be formed. Moreover, as a material which comprises the mainspring main body 51A, materials other than a metal, for example, resin etc., can also be used.

<Second Embodiment>
Next, a second embodiment will be described. The present embodiment is different in the configuration of the mainspring 50 from the first embodiment. Hereinafter, the present embodiment will be described focusing on the differences from the first embodiment. In each of the following embodiments, the configuration of the mainspring 50 is different from that of the first embodiment, and each embodiment will be described focusing on the differences from the first embodiment. .

  FIG. 3B-1 is a partial front view of the mainspring according to the second embodiment, and FIG. 3B-2 is a side sectional view of the mainspring according to the second embodiment. As shown in FIGS. 3B-1 and 3B-2, the mainspring 50B includes a mainspring main body 51B.

  The mainspring main body 51B is formed with a main surface 52B and side end surfaces 53B, and has a long shape. Further, both end sides in the longitudinal direction of the main surface 52B in the mainspring main body 51B (upper and lower sides in FIG. 3B-1) serve as side end surfaces 53B.

  On both side end surfaces 53B of the mainspring main body 51B, concave portions 54B and 54B capable of holding lubricating oil as a lubricating material are formed, respectively. As shown in FIG. 3 (B-2), the recess 54B bites inwardly of the mainspring main body 51B on the front side and the rear side in the front-rear direction of the side end face 53B, and extends along the extending direction of the mainspring main body 51B. Each is formed as a strip. In other words, on the side end surface 53B of the mainspring main body 51B, convex portions sandwiched between the concave portions 54B and 54B arranged in the front and rear directions are formed as ridges.

  When the mainspring 50B is stored in the barrel wheel 22, one of the side end surfaces 53B of the mainspring main body 51B is disposed on the bottom surface side of the barrel wheel 22 and the other side end surface 53B is disposed on the opening surface side of the barrel wheel 22. . When the mainspring 50B is wound around the barrel complete 22A of the barrel complete 22, the main surface 52B of the mainspring main body 51B comes into contact with the back surface of the mainspring main body 51B.

  In the mechanical timepiece 1 including the mainspring 50B according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, the barrel complete The lubricity with the mainspring 50B can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50B, it can suppress that an organic film peels or the film formation of an organic film takes time.

  In the first embodiment, the recesses 54A are formed on both side end faces 53A. However, the recesses 54A may be formed only on one side end face 53A. Similarly, in the second embodiment, the recesses 54B are formed on both side end surfaces 53B, but the recesses 54B may be formed only on one side end surface 53B. Further, in the second embodiment, the concave portion 54A as in the first embodiment may be formed on one side of the side end surface 53B, and the concave portion 54B as in the second embodiment may be formed on the other side. In the second embodiment, the recesses 54B are formed on the front and rear sides of the side end surface 53B, but may be formed on either the front or rear side. Further, the number of recesses 54B may be three or more instead of two.

<Third Embodiment>
Next, FIG. 4A-1 explaining the third embodiment is a partial front view of the mainspring according to the third embodiment, and FIG. 4A-2 is a side of the mainspring according to the third embodiment. It is sectional drawing. As shown in FIGS. 4A-1 and 4A-2, the mainspring 50C includes a mainspring body 51C.

  The mainspring main body 51C includes a mainspring main body inner portion 52C1 and a mainspring main body outer portion 52C2 and 52C2. The mainspring main body inner portion 52C1 is formed of, for example, a cobalt (Co) based alloy, iron (Fe), steel, or the like, similar to the mainspring main body 51A according to the first embodiment. The mainspring main body outer portion 52C2 is a lubricating metal that is a functional material having a lower friction coefficient and higher lubricating performance than the cobalt (Co) based alloy, iron (Fe), steel, etc. used in the mainspring main body inner portion 52C1. For example, it is made of gold (Au) or lead (Pb).

  The mainspring main body 51C is formed with a main surface 53C and side end surfaces 54C, and has a long shape. Further, both end sides in the longitudinal direction of the main surface 53C (upper and lower sides in FIG. 4A-1) of the mainspring main body 51C are side end surfaces 54C.

  On both side end faces 54C of the mainspring main body 51C, recesses 55C and 55C capable of holding lubricating oil are formed, respectively. As shown in FIG. 4 (A-2), the recess 55C bites inwardly of the mainspring main body 51C at a substantially center position in the front-rear direction of the side end face 54C, and extends along the extending direction of the mainspring main body 51C. As each is formed.

  The concave portion 55C is formed so as to be surrounded by the mainspring main body inner portion 52C1 and the mainspring main body outer portion 52C2. The bottom surface of the recessed portion 55C is formed by the upper surface of the mainspring main body inner portion 52C1, and the side surface of the concave portion 55C is formed by the side surface of the mainspring main body outer portion 52C2.

  When the mainspring 50C is housed in the barrel complete 22, one of the side end faces 54C of the mainspring main body 51C is disposed on the bottom surface side of the barrel complete 22 and the other side end face 54C is disposed on the opening side of the barrel complete 22. . Further, when the mainspring 50C is wound around the barrel complete 22A of the barrel complete 22, the main surface 53C of the mainspring main body 51C comes into contact with the back surface of the mainspring main body 51C.

  In the mechanical timepiece 1 including the mainspring 50C according to the present embodiment having the above-described configuration, as with the first embodiment, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, the barrel complete 22 The lubricity with the mainspring 50C can be kept high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Further, on the outer side of the mainspring main body 51C, a mainspring main body outer portion 52C2 having higher lubricity than the mainspring main body inner portion 52C1 is formed. For this reason, when the mainspring 50C is wound around the barrel complete 22A, the frictional force when the main surface 53C and the back surface of the mainspring main body 51C come into contact with each other can be reduced. Accordingly, it is possible to smoothly unwind the mainspring main body 51C. Furthermore, since the wear in the mainspring main body 51C can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50C, it can suppress that an organic film peels or it takes time to form an organic film.

<Fourth Embodiment>
Next, a fourth embodiment will be described. FIG. 4B-1 is a partial front view of the mainspring according to the fourth embodiment, and FIG. 4B-2 is a side sectional view of the mainspring according to the fourth embodiment. As shown in FIGS. 4B-1 and 4B-2, the mainspring 50D includes a mainspring main body 51D.

  The mainspring main body 51D includes a mainspring main body inner portion 52D1 and mainspring main body outer portions 52D2 and 52D2. The mainspring main body inner portion 52D1 is made of, for example, a cobalt (Co) based alloy, iron (Fe), steel or the like, and the mainspring main body outer portion 52D2 is made of a lubricating material such as gold (Au) or lead (Pb). Has been.

  The mainspring main body 51D is formed with a main surface 53D and a side end face 54D, and has a long shape. Further, both end sides in the longitudinal direction of the main surface 53D of the mainspring main body 51D (upper and lower sides in FIG. 4B-1) are side end surfaces 54D.

  On both side end surfaces 54D of the mainspring main body 51D, recesses 55D and 55D capable of holding lubricating oil are formed, respectively. As shown in FIG. 4 (B-2), the recess 55D is a recess along the extending direction of the mainspring main body 51D so as to bite inwardly of the mainspring main body 51D on the front side and the rear side of the side end face 54D. Each is formed as a strip. In other words, on the side end face 54D of the mainspring main body 51D, convex portions sandwiched between the concave portions 55D and 55D arranged on the front and rear sides are formed as ridges.

  The recess 55D is formed by a mainspring main body inner portion 52D1 and a mainspring main body outer portion 52D2. The bottom surface of the recess 55D is formed by the upper surface of the mainspring main body outer portion 52D2, and the side surface of the recess 55D is formed by the side surface of the main spring main body inner portion 52D1.

  When the mainspring 50D is stored in the barrel wheel 22, one of the side end surfaces 54D of the mainspring main body 51D is disposed on the bottom surface side of the barrel wheel 22, and the other of the side end surfaces 54D is disposed on the opening surface side of the barrel wheel 22. . Further, when the mainspring 50D is wound around the barrel complete 22A of the barrel complete 22, the main surface 53D of the mainspring main body 51D comes into contact with the back surface of the mainspring main body 51D.

  In the mechanical timepiece 1 including the mainspring 50D according to the present embodiment having the above-described configuration, as with the first embodiment, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, The lubricity with the mainspring 50D can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Further, on the outside of the mainspring main body 51D, a mainspring main body outer portion 52D2 having higher lubricity than the mainspring main body inner portion 52D1 is formed. For this reason, when mainspring 50D is wound around barrel case 22A, the frictional force when main surface 53D and the back of mainspring main part 51D contact can be made small. Therefore, the mainspring body 51D can be smoothly unwound. Furthermore, since wear in the mainspring main body 51D can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50D, it can suppress that an organic film peels or it takes time to form an organic film.

<Fifth Embodiment>
Next, a fifth embodiment will be described. FIG. 5A-1 is a partial front view of the mainspring according to the fifth embodiment, and FIG. 5A-2 is a side sectional view of the mainspring according to the fifth embodiment. As shown in FIGS. 5A-1 and 5A-2, the mainspring 50E includes a mainspring main body 51E.

  The mainspring main body 51E includes a mainspring main body inner portion 52E1 and mainspring main body outer portions 52E2 and 52E2. The mainspring main body inner portion 52E1 is made of, for example, a cobalt (Co) based alloy, iron (Fe), steel, or the like, and the mainspring main body outer portion 52E2 is made of a lubricating material such as gold (Au) or lead (Pb). Has been.

  The mainspring main body 51E is formed with a main surface 53E and side end surfaces 54E, and has a long shape. Further, both end sides in the longitudinal direction of the main surface 53E in the mainspring main body 51E (upper and lower sides in FIG. 5A-1) are side end surfaces 54E. In addition, a plurality of texture holes 55E are formed in the mainspring main body outer portions 52E2 and 52E2 of the mainspring main body 51E. The texture hole 55E is a recess that can hold the lubricating oil and is formed through the mainspring main body outer portion 52E2. The plurality of texture holes 55E are arranged in a staggered manner, and the distances between the adjacent texture holes 55E are equally spaced. Further, the texture hole 55E formed in the mainspring main body outer portion 52E2 on the main surface 53E side and the texture hole 55E formed in the mainspring main body outer portion 52E2 on the back surface face each other across the mainspring main body inner portion 52E1. Is arranged.

  On both side end faces 54E of the mainspring main body 51E, recesses 56E and 56E that can hold lubricating oil as a lubricating material are formed, respectively. As shown in FIG. 5 (A-2), the recess 56E bites inwardly of the mainspring main body 51E at a substantially central position in the front-rear direction of the side end face 54E, and extends along the extending direction of the mainspring main body 51E. As each is formed.

  The recess 56E is formed so as to be surrounded by the mainspring main body inner portion 52E1 and the mainspring main body outer portion 52E2. The bottom surface of the concave portion 56E is formed by the upper surface of the mainspring main body inner portion 52E1, and the side surface of the concave portion 56E is formed by the side surface of the mainspring main body outer portion 52E2.

  When the mainspring 50E is housed in the barrel complete 22, one of the side end surfaces 54E of the mainspring main body 51E is disposed on the bottom surface side of the barrel complete 22 and the other side end surface 54E is disposed on the opening side of the barrel complete 22. . Further, when the mainspring 50E is wound around the barrel complete 22A of the barrel complete 22, the main surface 53E of the mainspring main body 51E comes into contact with the back surface of the mainspring main body 51E.

  In the mechanical timepiece 1 including the mainspring 50E according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, the barrel complete with the barrel 50, as in the first embodiment. The lubricity with the mainspring 50E can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Further, since the mainspring main body outer portion 52E2 having higher lubricity than the mainspring main body inner portion 52E1 is formed outside the mainspring main body 51E, when the mainspring 50E is wound around the barrel complete 22A, The frictional force when the main surface 53E contacts the back surface can be reduced. Therefore, the mainspring main body 51E can be smoothly unwound. Furthermore, since the wear in the mainspring main body 51E can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  The mainspring main body outer portion 52E2 is formed with a large number of texture holes 55E capable of holding lubricating oil. For this reason, lubricating oil can be made easy to stay on the surface and the back surface of mainspring 50E. In addition, since the large number of texture holes 55E are arranged at equal intervals, lubricity can be evenly imparted to the surface of the mainspring 50E. Therefore, the mainspring main body 51E can be unwinded more smoothly. In addition, since the wear in the mainspring main body 51E can be further reduced, the contamination of the movement 10 due to the wear powder can be further reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50E, it can suppress that an organic film peels or the film formation of an organic film takes time.

<Sixth Embodiment>
Next, a sixth embodiment will be described. FIG. 5B-1 is a partial front view of the mainspring according to the sixth embodiment, and FIG. 5B-2 is a side sectional view of the mainspring according to the sixth embodiment. As shown in FIGS. 5B-1 and 5B-2, the mainspring 50F includes a mainspring main body 51F.

  The mainspring main body 51F includes a mainspring main body inner portion 52F1 and mainspring main body outer portions 52F2 and 52F2. The mainspring main body inner portion 52F1 is made of, for example, a cobalt (Co) based alloy, iron (Fe), steel or the like, and the mainspring main body outer portion 52F2 is made of a lubricating material such as gold (Au) or lead (Pb). Has been.

  The mainspring main body 51F is formed with a main surface 53F and side end surfaces 54F, and has a long shape. Further, both end sides in the longitudinal direction of the main surface 53F in the mainspring main body 51F (upper and lower sides in FIG. 5B-1) are side end surfaces 54F.

  On both side end surfaces 54F of the mainspring main body 51F, concave portions 56F and 56F that can hold lubricating oil as a lubricating material are formed, respectively. As shown in FIG. 5 (B-2), the recess 56F bites inwardly of the mainspring main body 51F on the front side and the rear side in the front-rear direction of the side end face 54F, and extends along the extending direction of the mainspring main body 51F. Each is formed as a strip. In other words, on the side end face 54F of the mainspring main body 51F, convex portions sandwiched between the concave portions 56F and 56F arranged in the front and rear directions are formed as ridges.

  The recess 56F is formed by a mainspring main body inner portion 52F1 and a mainspring main body outer portion 52F2. The bottom surface of the concave portion 56F is formed by the upper surface of the mainspring main body outer portion 52F2, and the side surface of the concave portion 56F is formed by the side surface of the mainspring main body inner portion 52F1.

  When the mainspring 50F is stored in the barrel wheel 22, one of the side end surfaces 54F of the mainspring main body 51F is disposed on the bottom surface side of the barrel wheel 22, and the other of the side end surfaces 54F is disposed on the opening surface side of the barrel wheel 22. . Further, when the mainspring 50F is wound around the barrel complete 22A of the barrel complete 22, the main surface 53F of the mainspring main body 51F comes into contact with the back surface of the mainspring main body 51F.

  In the mechanical timepiece 1 including the mainspring 50F according to the present embodiment having the above-described configuration, as with the first embodiment, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, the barrel complete 22 The lubricity with the mainspring 50F can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Further, since the mainspring main body outer portion 52F2 having higher lubricity than the mainspring main body inner portion 52F1 is formed outside the mainspring main body 51F, when the mainspring 50F is wound around the barrel complete 22A, The frictional force when the main surface 53F and the back surface come into contact with each other can be reduced. Therefore, the mainspring body 51F can be smoothly unwound. Furthermore, since wear in the mainspring main body 51F can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  The mainspring main body outer portion 52F2 is formed with a large number of texture holes 55F capable of holding lubricating oil. For this reason, lubricating oil can be made easy to stay on the surface and the back surface of mainspring 50F. In addition, since the large number of texture holes 55F are arranged at equal intervals, lubricity can be evenly imparted to the surface of the mainspring 50F. Therefore, the mainspring main body 51F can be unwound more smoothly. In addition, since the wear in the mainspring main body 51F can be further reduced, contamination of the movement 10 due to wear powder can be further reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50F, it can suppress that an organic film peels or the film formation of an organic film takes time.

  In the third to sixth embodiments, the mainspring main body outer portions 52C2 to 52F2 before and after the mainspring main bodies 51C to 51F are the lubricating metal, but only one of them is the lubricating metal and the other is the main spring main body inner portion 52C1. You may form with the same material as -52F1.

<Seventh Embodiment>
Next, a seventh embodiment will be described. FIG. 6A-1 is a partial front view of the mainspring according to the seventh embodiment, and FIG. 6A-2 is a side sectional view of the mainspring according to the seventh embodiment. As shown in FIGS. 6A-1 and 6A-2, the mainspring 50G includes a mainspring main body 51G.

  The mainspring main body 51G is formed of, for example, a cobalt (Co) -based alloy, iron (Fe), steel, or the like, and includes a main surface 52G and side end surfaces 53G. A plurality of texture holes 54G are formed on the main surface 52G and the back surface of the mainspring main body 51G, respectively. The plurality of texture holes 54G are arranged in a staggered manner, and the distances between adjacent texture holes 54G are equal.

  On both side end faces 53G of the mainspring main body 51G, recesses 55G that can hold the lubricating oil are formed. As shown in FIG. 6 (A-2), the concave portion 55G bites inwardly of the mainspring main body 51G at a substantially central position in the front-rear direction of the side end surface 53G, and extends along the extending direction of the mainspring main body 51G. As each is formed.

  When the mainspring 50G is housed in the barrel wheel 22, one of the side end surfaces 53G of the mainspring main body 51G is arranged on the bottom surface side of the barrel wheel 22, and the other side edge surface 53G is arranged on the opening surface side of the barrel wheel 22. . Moreover, when the mainspring 50G is wound around the barrel complete 22A of the barrel complete 22, the main surface 52G of the mainspring main body 51G comes into contact with the back surface of the mainspring main body 51G.

  Lubricating metal 56G is filled in the texture holes 54G formed in the main surface 52G and the back surface of the mainspring main body 51G. The lubricating metal 56G is made of a functional material such as gold (Au) or lead (Pb).

  In the mechanical timepiece 1 including the mainspring 50G according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced as in the first embodiment, The lubricity with the mainspring 50G can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Further, texture holes 54G are formed on the main surface 52G and the back surface of the mainspring main body 51G, and the textured holes 54G are filled with a lubricating metal 56G having higher lubricity than the mainspring main body 51G. For this reason, when the mainspring 50G is wound around the barrel complete 22A, the frictional force when the main surface 52G and the back surface of the mainspring main body 51G come into contact with each other can be reduced. Therefore, the mainspring main body 51G can be smoothly unwound. Furthermore, since wear in the mainspring main body 51G can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50G, it can suppress that an organic film peels or the film formation of an organic film takes time. In addition, since the large number of texture holes 54G are arranged at equal intervals, lubricity can be evenly imparted to the surface of the mainspring 50G. Therefore, the mainspring main body 51G can be unwound more smoothly. In addition, since the wear on the mainspring main body 51G can be further reduced, contamination of the movement 10 due to wear powder can be further reduced.

<Eighth Embodiment>
Next, an eighth embodiment will be described. FIG. 6B-1 is a partial front view of the mainspring according to the eighth embodiment, and FIG. 6B-2 is a side sectional view of the mainspring according to the eighth embodiment. As shown in FIGS. 6B-1 and 6B-2, the mainspring 50H includes a mainspring main body 51H.

  The mainspring main body 51H is formed of, for example, a cobalt (Co) -based alloy, iron (Fe), steel, or the like, and includes a main surface 52H and side end surfaces 53H. A plurality of texture holes 54H are formed in the main surface 52H and the back surface of the mainspring main body 51H. The plurality of texture holes 54H are arranged in a staggered manner, and the distances between adjacent texture holes 54H are equal.

  On both side end surfaces 53H of the mainspring main body 51H, concave portions 55H that can hold the lubricating oil are formed. As shown in FIG. 6 (B-2), the recess 55H bites inwardly of the mainspring main body 51H on the front side and the rear side in the front-rear direction of the side end surface 53H, and extends along the extending direction of the mainspring main body 51H. Each is formed as a strip. In other words, on the side end surface 53H of the mainspring main body 51H, convex portions sandwiched between the concave portions 55H and 55H arranged in the front and rear directions are formed as ridges.

  When the mainspring 50H is stored in the barrel wheel 22, one of the side end surfaces 53H of the mainspring main body 51H is disposed on the bottom surface side of the barrel wheel 22, and the other of the side end surfaces 53H is disposed on the opening surface side of the barrel wheel 22. . Further, when the mainspring 50H is wound around the barrel complete 22A of the barrel complete 22, the main surface 52H of the mainspring main body 51H comes into contact with the back surface of the mainspring main body 51H.

  Lubricating metal 56H is filled in the texture holes 54H formed on the main surface 52H and the back surface of the mainspring main body 51H. The lubricating metal 56H is made of a functional material such as gold (Au) or lead (Pb).

  In the mechanical timepiece 1 provided with the mainspring 50H according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, as in the first embodiment, The lubricity with the mainspring 50H can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Moreover, the texture hole 54H is formed in the main surface 52H and the back surface of the mainspring main body 51H, and the textured hole 54H is filled with the lubricating metal 56H with higher lubricity than the mainspring main body 51H. For this reason, when the mainspring 50H is wound around the barrel complete 22A, the frictional force when the main surface 52H and the back surface of the mainspring main body 51H come into contact with each other can be reduced. Therefore, the mainspring main body 51H can be smoothly unwound. Furthermore, since wear in the mainspring main body 51H can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, since high lubricity can be exhibited, without forming an organic film in mainspring 50H, it can suppress that an organic film peels or it takes time to form an organic film. In addition, since the large number of texture holes 54H are arranged at equal intervals, lubricity can be evenly imparted to the surface of the mainspring 50H. Therefore, the mainspring main body 51H can be unwinded more smoothly. In addition, since the wear in the mainspring main body 51H can be further reduced, the contamination of the movement 10 due to wear powder can be further reduced.

<Ninth Embodiment>
Next, a ninth embodiment will be described. FIG. 7A-1 is a partial front view of the mainspring according to the ninth embodiment, and FIG. 7A-2 is a side sectional view of the mainspring according to the ninth embodiment. As shown in FIGS. 7A-1 and 7A-2, the mainspring 50I includes a mainspring main body 51I.

  The mainspring main body 51I is formed with a main surface 52I and side end surfaces 53I, and a plurality of texture holes 54I are formed on the main surface 52I and the back surface of the mainspring main body 51I. Moreover, the recessed part 55I is formed in both the side end surfaces 53I in the mainspring main body 51I, respectively. The texture hole 54I is filled with a lubricating metal 56I. The configuration so far is the same as the mainspring 50G shown in FIGS. 6A-1 and A-2 shown in the seventh embodiment.

  Further, in the mainspring 50G in the seventh embodiment, the recess 55G is a recess capable of holding lubricating oil, but the recess 55I in this embodiment is filled with a lubricating metal 57I. The lubricating metal 57I is made of a functional material such as gold (Au) or lead (Pb), like the lubricating metal 56I.

  In the mechanical timepiece 1 provided with the mainspring 50I according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, as in the first embodiment, The lubricity with the mainspring 50I can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Furthermore, since the lubricating metals 56I and 57I perform the same function as the lubricating oil, the lubricating oil can be dispensed with. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Further, since the lubrication metal 56I is filled in the texture hole 54I formed on the main surface 52I and the back surface of the main body 51I, when the mainspring 50I is wound around the barrel complete 22A, the main body 51I is unwound. It can be done smoothly. Furthermore, since the wear in the mainspring main body 51I can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, it can suppress that an organic film peels or it takes time and effort to form an organic film. Moreover, since the large number of texture holes 54I are arranged at equal intervals, lubricity can be imparted evenly to the surface of the mainspring 50I. Therefore, the mainspring main body 51I can be unwinded more smoothly. Furthermore, since the wear in the mainspring main body 51I can be reduced evenly, contamination of the movement 10 due to wear powder can be further reduced.

<Tenth Embodiment>
Next, a tenth embodiment will be described. FIG. 7B-1 is a partial front view of the mainspring according to the tenth embodiment, and FIG. 7B-2 is a side sectional view of the mainspring according to the tenth embodiment. As shown in FIGS. 7B-1 and 7B-2, the mainspring 50J includes a mainspring main body 51J.

  The mainspring body 51J is formed with a main surface 52J and side end faces 53J, and a plurality of texture holes 54J are formed on the main surface 52J and the back surface of the mainspring body 51J. Moreover, the recessed part 55J is formed in both the side end surfaces 53J in the mainspring main body 51J, respectively. The texture hole 54J is filled with a lubricating metal 56J. The configuration up to this point is common to the mainspring 50H shown in FIGS. 6B-1 and B-2 shown in the eighth embodiment.

  Further, in the mainspring 50H in the eighth embodiment, the recess 55H is a recess capable of holding lubricating oil, but the recess 55J in this embodiment is filled with a lubricating metal 57J. The lubricating metal 57J is made of a functional material such as gold (Au) or lead (Pb), like the lubricating metal 56J.

  In the mechanical timepiece 1 including the mainspring 50J according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, the barrel complete The lubricity with the mainspring 50J can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Furthermore, since the lubricating metals 56J and 57J perform the same function as the lubricating oil, the lubricating oil can be dispensed with. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  Moreover, since the lubrication metal 56J is filled in the texture hole 54J formed in the main surface 52J and the back surface of the mainspring main body 51J, when the mainspring 50J is wound around the barrel complete 22A, the mainspring main body 51J is unwound. It can be done smoothly. Furthermore, since the wear in the mainspring main body 51J can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, it can suppress that an organic film peels or it takes time and effort to form an organic film. Moreover, since the large number of texture holes 54J are arranged at equal intervals, lubricity can be imparted evenly to the surface of the mainspring 50J. Therefore, the mainspring main body 51J can be unwinded more smoothly. Furthermore, since the wear in the mainspring main body 51J can be reduced evenly, contamination of the movement 10 due to wear powder can be further reduced.

<Eleventh embodiment>
Next, an eleventh embodiment will be described. FIG. 8A-1 is a partial front view of the mainspring according to the eleventh embodiment, and FIG. 8A-2 is a side sectional view of the mainspring according to the eleventh embodiment. As shown in FIGS. 8A-1 and 8A-2, the mainspring 50K includes a mainspring main body 51K.

  The mainspring body 51K is formed with a main surface 52K and side end faces 53K, and a plurality of texture holes 54K are formed on the main surface 52K and the back surface of the mainspring body 51K. Moreover, the recessed part 55K is formed in both the side end surfaces 53K in the mainspring main body 51K, respectively. The configuration so far is the same as the mainspring 50G shown in FIGS. 6A-1 and A-2 shown in the seventh embodiment.

  In the mainspring 50G in the seventh embodiment, the texture hole 54G is filled with the lubrication metal 56G. However, the texture hole 54K in the present embodiment is not filled with the lubrication metal, and lubricating oil is used. It can be held.

  In the mechanical timepiece 1 including the mainspring 50K according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced as in the first embodiment, The lubricity with the mainspring 50K can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  In addition, texture holes 54K are formed in the main surface 52K and the back surface of the mainspring main body 51K. Since the texture hole 54K is capable of holding lubricating oil, when the mainspring 50K is wound around the barrel complete 22A, the frictional force when the main surface 52K and the back surface of the mainspring main body 51K come into contact is reduced. Can do. Therefore, the mainspring main body 51K can be smoothly unwound. Furthermore, since the wear in the mainspring main body 51K can be reduced, contamination of the movement 10 due to wear powder can be reduced. Further, since the texture hole 54K is not filled with the lubricating metal, the configuration can be simplified correspondingly.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, it can suppress that an organic film peels or it takes time and effort to form an organic film. In addition, since the large number of texture holes 54K are arranged at equal intervals, the surface of the mainspring 50K can be evenly lubricated. Therefore, the mainspring main body 51K can be unwinded more smoothly. Furthermore, since the wear in the mainspring main body 51K can be reduced evenly, contamination of the movement 10 due to wear powder can be further reduced.

<Twelfth Embodiment>
Next, a twelfth embodiment will be described. FIG. 8B-1 is a partial front view of the mainspring according to the twelfth embodiment, and FIG. 8B-2 is a side sectional view of the mainspring according to the twelfth embodiment. As shown in FIGS. 8B-1 and 8B-2, the mainspring 50L includes a mainspring main body 51L.

  The mainspring main body 51L is formed with a main surface 52L and a side end surface 53L, and a plurality of texture holes 54L are formed on the main surface 52L and the back surface of the mainspring main body 51L. Moreover, the recessed part 55L is formed in both the side end surfaces 53L in the mainspring main body 51L, respectively. The configuration up to this point is common to the mainspring 50H shown in FIGS. 6B-1 and B-2 shown in the eighth embodiment.

  Further, in the mainspring 50H in the eighth embodiment, the texture hole 54H is filled with the lubricating metal 56H, but the texture hole 54L in the present embodiment is not filled with the lubricating metal, and the lubricating oil is used. It can be held.

  In the mechanical timepiece 1 including the mainspring 50L according to the present embodiment having the above-described configuration, as with the first embodiment, even if the amount of lubricating oil injected into the barrel complete 22 is reduced, the barrel complete 22 The lubricity with the mainspring 50L can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22.

  In addition, texture holes 54L are formed in the main surface 52L and the back surface of the mainspring main body 51L. Since the texture hole 54L is capable of holding lubricating oil, when the mainspring 50L is wound around the barrel complete 22A, the frictional force when the main surface 52L and the back surface of the mainspring main body 51L come into contact is reduced. Can do. Therefore, the mainspring main body 51L can be smoothly unwound. Furthermore, since the wear in the mainspring main body 51L can be reduced, contamination of the movement 10 due to wear powder can be reduced. Moreover, since the lubrication metal is not filled in the texture hole 54L, the configuration can be simplified correspondingly.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, it can suppress that an organic film peels or it takes time and effort to form an organic film. Moreover, since the large number of texture holes 54L are arranged at equal intervals, lubricity can be imparted evenly to the surface of the mainspring 50L. Therefore, the mainspring main body 51L can be unwound more smoothly. Furthermore, since the wear of the mainspring main body 51L can be reduced evenly, contamination of the movement 10 due to wear powder can be further reduced.

<13th Embodiment>
FIG. 9A-1 is a partial front view of the mainspring according to the thirteenth embodiment, and FIG. 9A-2 is a side sectional view of the mainspring according to the thirteenth embodiment. As shown in FIGS. 9A-1 and 9A-2, the mainspring 50M includes a mainspring main body 51M.

  The mainspring main body 51M is formed with a main surface 52M and side end surfaces 53M, and a plurality of texture holes 54M are formed on the main surface 52M and the back surface of the mainspring main body 51M. The configuration so far is the same as the mainspring 50K shown in FIGS. 8A-1 and 8A-2 shown in the eleventh embodiment. Further, in the mainspring 50K in the eleventh embodiment, the concave portion 55K is formed on the side end surface 53K, but in the present embodiment, no concave portion is formed on the side end surface 53M.

  In the mechanical timepiece 1 including the mainspring 50M according to the present embodiment having the above-described configuration, even if the amount of lubricating oil injected into the barrel complete 22 is reduced as in the first embodiment, The lubricity with the mainspring 50M can be maintained high, and the amount of lubricating oil injected into the barrel complete 22 can be reduced. Therefore, the leakage amount of the lubricating oil from the barrel complete 22 can be reduced without providing the lid member on the barrel complete 22. Further, since no recess is formed in the side end face 53M, the manufacturing can be facilitated accordingly.

  In addition, texture holes 54M are formed in the main surface 52M and the back surface of the mainspring main body 51M. Since the texture hole 54M can hold lubricating oil, when the mainspring 50M is wound around the barrel complete 22A, the frictional force when the main surface 52M and the back surface of the mainspring main body 51M come into contact with each other is reduced. Can do. Therefore, the mainspring main body 51M can be smoothly unwound. Furthermore, since the wear in the mainspring main body 51M can be reduced, contamination of the movement 10 due to wear powder can be reduced.

  Furthermore, since it is not necessary to provide the lid member on the barrel complete 22, it is possible to contribute to the thinning of the movement 10. Moreover, it can suppress that an organic film peels or it takes time and effort to form an organic film. In addition, since the large number of texture holes 54M are arranged at equal intervals, the surface of the mainspring 50M can be evenly lubricated. Therefore, the mainspring main body 51M can be unwinded more smoothly. Furthermore, since the wear of the mainspring main body 51M can be reduced evenly, contamination of the movement 10 due to wear powder can be further reduced.

  In the fifth to thirteenth embodiments, the texture holes are formed on both the main surface and the back surface of the mainspring main body, but the texture holes may be formed only on one of the surfaces. The plurality of texture holes are formed at regular intervals, but may be formed at non-uniform intervals. Further, in the seventh to tenth embodiments, the lubrication metal is provided in all the texture holes, but there may be a texture hole in which the lubrication metal is not provided. In this case, the texture hole can hold the lubricating oil.

  In each of the third, fifth, seventh, ninth, and eleventh embodiments, as in the first embodiment, the concave portions are formed on both side end surfaces, but the concave portions are formed only on one side end surface. May be. In each of the fourth, sixth, eighth, tenth and twelfth embodiments, as in the second embodiment, the concave portions are formed on both side end surfaces, but the concave portions are formed only on one side end surface. It may be formed. In each of the fourth, sixth, eighth, tenth, and twelfth embodiments, a concave portion as in the third, fifth, seventh, ninth, and eleventh embodiments is formed on one side of the side end surface, and the second side. You may form a recessed part like each embodiment of 4,6,8,10,12. In each of the fourth, sixth, eighth, tenth, and twelfth embodiments, the concave portions are formed on the front and rear sides of the side end faces, but may be formed on either the front or rear side. Also, the number of recesses may be three or more instead of two.

1 ... Mechanical clock (clock)
DESCRIPTION OF SYMBOLS 10 ... Movement 22 ... Incense cart 50, 50A-50M ... Mainspring 51A-51M ... Mainspring main body 52C1-52F1 ... Mainspring main body inner side 52C2-52F2 ... Mainspring main body outer side 52A, 52B, 52G-52M, 53C-53F ... Main surface 53A, 53B, 53G to 53M, 54C to 54F ... side end faces 54A, 54B, 55C, 55D, 55G to 55L, 56E, 56F ... concave portions 54G to 54M, 55E, 55F ... texture holes (concave portions)
56G-56J, 57I, 57J ... Lubricating metal

Claims (9)

  It has a spring main body made of a plate-like body that is elastic and spirally housed in a barrel car, and a concave portion capable of holding a lubricating material is formed on the outer surface of the main spring main body. Mainspring characterized by   The mainspring according to claim 1, wherein the concave portion is formed on a side end surface of the mainspring main body along a longitudinal direction of the mainspring main body.   The mainspring according to claim 1 or 2, wherein the concave portion is formed on a main surface of the mainspring main body.   The mainspring according to claim 3, wherein the recesses are arranged at equal intervals. Further comprising a lubricating metal housed in the mainspring body,
The mainspring according to any one of claims 1 to 4, wherein the lubricating metal is formed of a material having a lower coefficient of friction than the mainspring main body.   A barrel complete with the mainspring according to any one of claims 1 to 5.   A movement comprising the barrel complete according to claim 6.   A timepiece comprising the movement according to claim 7. A method for manufacturing the mainspring according to any one of claims 1 to 5,
Laminate multiple mainspring base materials,
A method of manufacturing a mainspring, wherein the mainspring main body is formed by diffusion bonding the plurality of mainspring main body base materials.

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