JP6120322B2 - Swing seat, escapement, watch movement and watch - Google Patents

Description

  The present invention relates to a swing seat, an escapement, a timepiece movement including the escapement, and a timepiece.

In general, a mechanical timepiece is provided with an escapement for controlling the rotation of a barrel wheel, second wheel, third wheel and fourth wheel constituting the front train wheel. The escapement mainly includes a escape wheel, a swing seat provided in a balance that rotates around the balance stem, and an ankle that can rotate around the ankle.
The pendulum is provided with a rocking stone that comes into contact with the ankle, and rotates together with the balance with the energy stored in the hairspring. The pallet fork is equipped with a pallet stone and a pallet stone that can be disengaged with respect to the teeth of the escape wheel, and the energy of the hairspring is transmitted through the gangue to rotate around the ankle. .

  When the ankle rotates around the ankle, the entering pallet stone and the outgoing pallet stone are alternately engaged with and disengaged from the tooth portion of the escape wheel. The rotation of the escape wheel is temporarily stopped when the pallet stone of the ankle is engaged with the tooth portion of the escape wheel. The escape wheel rotates when the entering and exiting stones are disengaged from the teeth of the escape wheel. By repeating these operations continuously, the mechanical timepiece keeps time.

By the way, in general, the energy of the hairspring is applied from the mainspring housed in the barrel complete via the front wheel train and the escapement.
For example, Non-Patent Document 1 discloses an escape wheel, a swing seat provided on a balance, an ankle that can be rotated around an ankle, and an ankle that is provided on the swing seat and rotates with the swing seat. The escapement is provided with a boulder that contacts the wheel and rotates the ankle around the ankle and can contact the escape wheel. According to the escapement described in Non-Patent Document 1, it is considered that energy transmission efficiency in the escapement can be improved because the escape wheel and the rocking stone are in direct contact to transmit energy.

  However, the escapement described in Non-Patent Document 1 has the following problems. Since the tip of the escape wheel has a tip that slides on the tip of the pallet, lubricating oil is injected into the escape wheel. Therefore, when the escape wheel and the pallet come into contact with each other, the lubricating oil propagates between the gangue and the ankle gear through the escape wheel. For this reason, the viscosity resistance increases due to the adhesion of the oil component, the deterioration of the adhered oil component, and the like, and the stable operation of the escapement and the governor may be hindered, and the timing accuracy may deteriorate.

  In order to solve such a problem, for example, Patent Document 1 discloses a escape wheel with a pinnacle, an ankle having an entering pallet, an exit pallet, and a third pallet (pallet 26), An escapement is described comprising a swing seat having one pallet and a second pallet (pallet 25). According to the technique described in Patent Document 1, when the balance and the swing seat are rotated in the clockwise direction, the tooth portion of the escape wheel comes into contact with the second calculus, thereby causing energy to the hairspring. Is granted. In addition, when the balance and the swing seat are rotating in the counterclockwise direction, energy is imparted to the hairspring through the ankle by the escape wheel of the escape wheel coming in contact with the third pallet. Is done. Therefore, since the first pallet that comes into contact with the ankle does not come into contact with the escape wheel, it is possible to prevent the lubricating oil from propagating between the first calculus and the ankle hull, and to stably escape. It is considered that stable operation of the machine and governor can be secured.

European Patent Application No. 0018796

George Daniels, “The Art of Breguet”, Sotheby Park Bernette Pubns, July 1981, p317-p320.

  However, in the technique described in Patent Document 1, problems remain in the following points. Generally, a rock stone is press-fitted and fixed to a swing seat, but when two rock stones are press-fitted into the swing seat, a greater stress is generated than when one rock stone is pressed into the swing seat. Occurs. In general, the swing seat is press-fitted and fixed to the balance stem, but if two swing stones are pressed into the swing seat and the swing seat is pressed into the swing seat, more stress is applied to the swing seat. Occur. In particular, the stress is concentrated between the through hole into which the balance is inserted and the through hole into which the rock stone is inserted, so that the swing seat may be damaged.

  Accordingly, the present invention relates to a swing seat that can prevent damage by suppressing stress concentration during press-fitting of a pallet stone and a balance stem, an escapement equipped with the swing seat, a watch movement equipped with the escapement, and this It is an object to provide a watch provided with a watch movement.

  In order to solve the above-mentioned problems, the swing seat of the present invention is a swing seat fixed to the balance and provided with at least one swing stone, the insertion hole into which the balance stem is inserted, and the swing stone And a holding portion that holds the inserted gangue, and the holding portion includes a contact portion that contacts at least one of the side surfaces of the gangue, and the contact An elastic deformation portion that supports the contact portion in a displaceable manner and urges the contact portion toward the pendulum is provided.

According to the present invention, the holding portion that holds the rock stone inserted into the opening includes the elastic deformation portion that supports the contact portion in a displaceable manner and biases the contact portion toward the rock stone. Therefore, when the pendulum is inserted from the opening, the abutment part is displaced and the elastic deformation part is elastically deformed, and the pendulum can be urged and held. As a result, when the pendulum is inserted into the opening and the swing seat is press-fitted truly, stress concentration around the insertion hole can be suppressed, so that the swing seat can be prevented from being damaged.
In addition, by providing the elastically deforming portion, even after holding the rock stone with the holding portion, the abutment portion can be displaced and the rock stone can be easily attached and detached, so that the position of the rock stone can be easily adjusted.

  The pendulum includes an impact surface to which an impact is applied from the outside, the holding portion includes a regulation surface in contact with the impact surface, and the contact portion is provided at a position facing the regulation surface. It is characterized by having.

  According to the present invention, the impact surface of the oscillating stone can be held in a state of being urged against the regulation surface while the impact surface of the oscillating stone is in contact with the restriction surface of the holding portion. Thereby, for example, since the impact range when energy is transmitted by bringing the escape wheel and the impact surface of the rocking stone into contact with each other can be set with high accuracy, it is possible to prevent a decrease in energy transmission efficiency due to variations in the impact range.

  In addition, the pebbles are formed in a prismatic shape, and a chamfered portion is provided at a corner of the pebbles among the side surfaces of the pebbles.

  According to the present invention, since the chamfered portion is provided at the corner portion of the rock stone, when the rock stone is inserted into the opening of the holding portion, the rock stone can be prevented from being caught at the opening edge portion. Therefore, workability of assembling and position adjustment of the rock stone can be improved, and chipping (chipping) of the rock stone due to contact between the opening edge portion of the holding portion and the corner portion of the rock stone can be prevented.

  The edge of the opening of the holding part is chamfered.

  According to the present invention, when inserting a rock stone into the opening of the holding portion, it is possible to prevent the corner portion of the rock stone from being caught at the edge of the opening and to easily guide the rock stone into the opening of the holding portion. Can be attached to. Accordingly, it is possible to improve the workability of assembling and positioning the pendulum, and to prevent chipping of the pendulum.

  Moreover, the said contact part has the convex part which contact | connects the said rock stone.

  According to the present invention, the contact portion is in contact with the rock stone by the convex portion, so that the contact portion and the rock stone can be in line contact or point contact. Thereby, since the urging | biasing force by an elastic deformation part can be concentrated on the contact part of a contact part and a rock stone, a rock rock can be hold | maintained reliably.

  The swing seat has a disk-shaped large brim formed with the holding portion and the insertion hole, and the elastic deformation portion is formed at an outer edge portion of the large brim. It is said.

  According to the present invention, since the elastic deformation portion can be formed at a position separated from the insertion hole, it is possible to suppress the generation of stress around the insertion hole when the elastic deformation portion is deformed. As a result, stress concentration around the insertion hole at the time of press-fitting the rock stone and the spring can be reliably suppressed, so that the swing seat can be prevented from being damaged.

  Further, the swing seat is formed of a first swing seat body and a second swing seat body, and includes the first swing stone and the second swing stone as the swing stone, The first swing stone is held, the second swing seat body holds the second swing stone, and the holding portion is provided in at least one of the first swing seat body and the second swing seat body. It is characterized by that.

  According to the present invention, the first pendulum body holding the first pendulum and the second pendulum body holding the second pendulum are provided. Even when the pendulum is fixed, the stress generated by fixing the first pendulum and the stress generated by fixing the second pendulum are Can be distributed. As a result, the rigidity of the swing seat can be secured, so that when the first swing stone and the second swing stone are fixed to the swing seat and further pressed into the balance, stress concentration around the insertion hole of the swing seat can be suppressed. . Therefore, breakage of the swing seat can be reliably prevented.

  The swing seat is formed of a material mainly composed of silicon.

  According to the present invention, the weight of the swing seat can be reduced by forming the swing seat with a material mainly composed of silicon. Further, when silicon is the main component, the outer shape of the swing seat can be formed with high accuracy by photolithography. Therefore, it is suitable for reducing the weight and size of the swing seat.

  The escapement of the present invention includes the above-described swinging seat, a escape wheel, and an ankle that can rotate around an ankle, and the swinging seat serves as the swing stone of the swinging seat. The first boulder that contacts the ankle as it rotates and rotates the ankle around the ankle, and the second boulder that can contact the tooth portion of the escape wheel, The ankle includes an entering pallet stone and an exit pallet stone that can be engaged with and disengaged from the tooth portion of the escape wheel as the ankle rotates, and that rotates and stops the escape wheel. Yes.

According to the present invention, since the holding part holds at least one of the first calcite and the second calcite, the insertion hole at the time of fixing the first calcite and the second calcite and press fitting the balance stone Stress concentration around can be suppressed.
In addition, the swing seat includes a first swing stone that contacts the ankle and rotates around the ankle as the swing seat rotates, and a second swing stone that can contact the tooth portion of the escape wheel. Therefore, for example, even in an escapement that requires lubrication to the pallet stone and the tooth portion of the escape wheel, oil can be prevented from propagating to the contact portion between the first swing stone and the ankle. Accordingly, an increase in viscous resistance due to the adhesion of oil or deterioration of the adhered oil can be prevented, and stable operation of the speed governor including the escapement and balance can be secured, so that deterioration of timekeeping accuracy can be prevented.
Further, the position of the second calculus, the outer diameter of the escape wheel, the separation distance between the balance wheel and the rotation center of the escape wheel, and the like can be set as desired without depending on the position of the first pallet. Thereby, since the impact range when the tooth part of the escape wheel and the second rocking stone collide can be set as desired, the balance between the energy transmission efficiency of the escapement and the timing accuracy can be set as desired.

  The tooth portion of the escape wheel has a contact surface that comes into contact with the entering pallet stone and the exit pallet stone, and the entrance pallet stone and the exit pallet stone are respectively in contact with the escape wheel. A straight line connecting the true center axis of the ankle and the tooth tip of the tooth portion of the escape wheel as seen from the axial direction of the center of rotation of the escape wheel. A first straight line, a straight line orthogonal to the first straight line is a second straight line, and the contact surface of the escape wheel and the engagement surface of any one of the entering pallet stone and the calcination stone When engaged, the engagement surface is inclined at a predetermined angle in the rotation direction of the escape wheel with respect to the second straight line.

  According to the present invention, the engagement surface of the entering pallet stone or the exiting pallet stone is inclined with respect to the second straight line by a predetermined angle in the rotation direction of the escape wheel. When the pallet stone or the bulge stone is engaged, a torque acts on the entering pallet stone or the bulge stone so as to be drawn to the escape wheel side by the rotational torque of the escape wheel. As a result, the engagement state between the tooth portion of the escape wheel and the entering pallet stone or the exit pallet stone can be stabilized. It is possible to prevent a shift in the engagement position. Therefore, the ankle rotates due to a disturbance, and an abnormal operation that prevents free vibration of the balance can be prevented by interfering with the balance by, for example, contacting the small brim with the tip of the sword.

  In addition, a timepiece movement of the present invention is characterized by including the escapement described above. The timepiece of the present invention is characterized by including the above-described timepiece movement.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to prevent damage to a swing seat, it can be set as the high-performance timepiece movement and timepiece excellent in timekeeping accuracy.

According to the present invention, the holding portion that holds the rock stone inserted into the opening includes the elastic deformation portion that supports the contact portion in a displaceable manner and biases the contact portion toward the rock stone. Therefore, when the pendulum is inserted from the opening, the abutment part is displaced and the elastic deformation part is elastically deformed, and the pendulum can be urged and held. As a result, when the pendulum is inserted into the opening and the swing seat is press-fitted truly, stress concentration around the insertion hole can be suppressed, so that the swing seat can be prevented from being damaged.
In addition, by providing the elastically deforming portion, even after holding the rock stone with the holding portion, the abutment portion can be displaced and the rock stone can be easily attached and detached, so that the position of the rock stone can be easily adjusted.

It is the top view which looked at the movement of the timepiece from the front side. It is a perspective view of an escapement. It is a top view of a escape wheel. It is explanatory drawing which showed the state which the engaging surface of the entering pallet stone and the contact surface of the escape wheel are engaged. It is a perspective view of an ankle body. It is a perspective view of a swing seat. It is a top view of a swing seat. It is a top view of the swing seat which concerns on the modification of 1st embodiment. It is a perspective view of a swing seat and a balance with hair according to the second embodiment. It is a top view of the 2nd swing seat body which comprises the swing seat which concerns on 2nd embodiment.

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings.
Below, after first describing the mechanical timepiece according to the embodiment, the details of the escapement will be described.
In general, a machine body including a driving part of a timepiece is referred to as a “movement”. A state in which a dial and hands are attached to the movement, and put into a watch case to form a finished product, is referred to as “complete” of the watch. Of the two sides of the base plate constituting the watch substrate, the side of the watch case with the glass, that is, the side with the dial is referred to as the “back side” of the movement. Of the two sides of the main plate, the side of the watch case with the case back, that is, the side opposite to the dial is referred to as the “front side” of the movement.

FIG. 1 is a plan view of a movement 101 (corresponding to “timepiece movement” in the claims) of the timepiece 100 as viewed from the front side.
As shown in FIG. 1, the timepiece 100 includes a movement 101. The movement 101 has a ground plate 102 constituting a substrate. A winding stem guide hole 103 is formed in the main plate 102. A winding stem 104 is rotatably incorporated in the winding stem guide hole 103.
On the back side of the movement 101 (the back side in the drawing in FIG. 1), a switching device (not shown) including a setting lever, a yoke and a yoke presser is arranged. The position of the winding stem 104 in the axial direction is determined by this switching device.
On the front side of the movement 101 (the front side in the drawing in FIG. 1), a fourth wheel 106, a third wheel 107, a second wheel 108 and a barrel wheel 110 constituting the front wheel train 105 are arranged, and the front wheel train An escapement 1 and a speed governor 2 that control the rotation of 105 are arranged.

The barrel wheel 110 has a mainspring 111, and when the winding stem 104 is rotated, a not-illustrated pinion wheel is rotated, and further, via a chi-wheel, a round hole wheel, and a square hole wheel (all not shown). The mainspring 111 is wound up. The barrel wheel 110 is rotated by the rotational force when the mainspring 111 is rewound, and the center wheel & pinion 108 is further rotated.
The second wheel & pinion 108 has a second pinion that meshes with a barrel gear (not shown) of the barrel complete 110 and a second gear (both not shown). When the second wheel & pinion 108 rotates, the third wheel & pinion 107 is configured to rotate.

The third wheel & pinion 107 has a third pinion (not shown) that meshes with the second gear of the second wheel 108 and a third gear (both not shown). When the third wheel & pinion 107 rotates, the fourth wheel & pinion 106 is configured to rotate.
The fourth wheel & pinion 106 has a fourth pinion (not shown) that meshes with the third gear of the third wheel 107 and a fourth gear (both not shown). The escapement 1 and the governor 2 are driven by the rotation of the fourth wheel & pinion 106.

The escapement machine 1 includes a escape wheel 11 that meshes with the fourth wheel & pinion 106 and an ankle 12 that moves the escape wheel 11 to rotate regularly.
The governor 2 is a mechanism that regulates the escapement 1 and includes a balance 5.
When the escapement 1 and the governor 2 are driven, the fourth wheel & pinion 106 is controlled to rotate once per minute, and the second wheel & pinion 108 is controlled to rotate once per hour. The

(Escapement)
Next, the escapement 1 will be described.
FIG. 2 is a perspective view of the escapement 1, and FIG. 3 is a plan view of the escape wheel 11 when viewed from the front side of the movement 101 (see FIG. 1). In FIG. 2, the balance wheel 52 is indicated by a two-dot chain line.
As shown in FIG. 2, the escapement 1 includes an escape wheel 11, an ankle 12, and a swing seat 53.

The escape wheel 11 includes a shaft portion 13 and a escape wheel portion 14 that is externally fixed to the shaft portion 13.
The shaft portion 13 has a shaft portion main body 16. The shaft body 16 is integrally formed with a first tenon portion 17a at the front end (upper side in FIG. 2) of the movement 101 (see FIG. 1), and the rear side (lower side in FIG. 2) of the movement 101 (see FIG. 2). The second tenon portion 17b is integrally formed at the end of the side. The shaft diameter of the first tenon portion 17a and the shaft diameter of the second tenon portion 17b are substantially the same. The first tenon portion 17a is rotatably supported by a train wheel bridge (not shown), and the second tenon portion 17b is rotatably supported by the above-described ground plate 102 (see FIG. 1).
A hook 18 is integrally formed on the shaft body 16 from the substantially center in the axial direction to the first tenon portion 17a. The escape wheel 18 is engaged with the gear portion of the fourth wheel & pinion 106 (see FIG. 1) described above, and the rotational force of the fourth wheel & pinion 106 is transmitted to the shaft portion 13.

  As shown in FIG. 3, the escape gear portion 14 is a member formed of a material having a crystal orientation such as a metal material or single crystal silicon, and is formed by an optical process such as electroforming or photolithography. It is formed by a LIGA (Lithographie Galvanforming Abing) process, DRIE (Deep Reactive Ion Etching), MIM (Metal Injection Molding), etc. that adopt a typical technique.

The escape gear portion 14 has a substantially annular hub portion 20 that is press-fitted into the shaft portion 13. A plurality of (10 in this embodiment) spokes 21 formed in a substantially oval shape so as to be elongated along the radial direction are integrally formed on the outer peripheral portion of the hub portion 20 so as to be equally spaced in the circumferential direction. Molded. And the adjacent spoke 21 is in the state where the portion on the root side is connected to the substantially central portion in the radial direction.
The spoke 21 includes a plurality of first spokes 21a extending radially from the hub portion 20, and a second spoke 21b extending bifurcated from the tip of the first spoke 21a. And the front-end | tips of the 2nd spoke 21b are connected, It is in the state by which the multiple (10 pieces) opening part 22 was formed by the 1st spoke 21a and the 2nd spoke 21b. The escape gear portion 14 is reduced in weight by forming the opening 22.
Further, a tooth portion 23 that is tapered toward the rotation direction of the escape wheel 11 (clockwise direction in FIG. 3) is integrally formed with the connection portion 21c in which the tips of the second spokes 21b are connected to each other. .

  The tooth portion 23 of the escape wheel 11 is a contact surface where the surface of the escape wheel 11 on the rotational direction side contacts an entering pallet stone 45 and an outgoing pallet stone 38 (see FIG. 2) of the ankle 12 described later. 23a. The contact surface 23 a of the tooth portion 23 of the escape wheel 11 is inclined toward the rotation center Q side of the escape wheel 11.

FIG. 4 is an explanatory view showing a state in which the engagement surface 45a of the entering pallet stone 45 and the contact surface 23a of the tooth portion 23 of the escape wheel 11 are engaged.
Here, when viewed from the axial direction of the rotation center Q of the escape wheel 11, a first straight line L <b> 1 that connects a center axis P of an ankle true 33 described later and a tooth tip of the tooth portion 23 of the escape wheel 11 is used. A straight line orthogonal to the straight line L1 is a second straight line L2, and when the contact surface 23a of the escape wheel 11 is engaged with the engaging surface 45a of the entering pallet stone 45, the engaging surface 45a of the entering pallet stone 45 is engaged. Is inclined by a predetermined angle α in the rotation direction of the escape wheel with respect to the second straight line L2. The predetermined angle α is set to about 11 ° to 16 °, for example.
Thus, since the engagement surface 45a of the entering pallet stone 45 is inclined by the predetermined angle α in the rotation direction of the escape wheel 11 with respect to the second straight line L2, the tooth portion 23 of the escape wheel 11 is obtained. When the engaging pawl 45 is engaged, torque is applied to the engaging pawl 45 so as to be pulled toward the escape wheel 11 by the rotational torque of the escape wheel 11. Thereby, since the engagement state of the tooth part 23 of the escape wheel 11 and the entering pawl 45 can be stabilized, for example, the engagement between the entrance pawl stone 45 and the tooth part 23 of the escape wheel 11 due to disturbance. It is possible to prevent a deviation from occurring at the alignment position. Although a detailed description is omitted, the contact surface 23a of the escape wheel 11 and the protrusion of the escape wheel 11 are similar to the relationship between the contact surface 23a of the escape wheel 11 and the engagement surface 45a of the entering pawl 45 described above. When the engagement surface 38b of the stone 38 is engaged, the engagement surface 38b of the pallet stone 38 is inclined by a predetermined angle α in the rotation direction of the escape wheel with respect to the second straight line L2. It is configured. Therefore, since the engagement state of the tooth portion 23 of the escape wheel 11 and the protruding stone 38 can be stabilized, the engagement of the protrusion stone 38 and the tooth portion 23 of the escape wheel 11 due to disturbance, for example. It is possible to prevent the displacement from occurring.

As shown in FIG. 2, the ankle 12 includes an ankle body 32 formed in a substantially L shape in plan view by two ankle beams 31 a and 31 b, an ankle true 33 that pivotally supports the ankle body 32, and an inset stone 45 and a protruding stone 38.
The ankle true 33 has a shaft portion 34. The shaft portion 34 is integrally formed with a first tenon portion 35a at the front side (upper side in FIG. 2) of the movement 101 (see FIG. 1), and the back side (in FIG. 2) of the movement 101 (see FIG. 1). A second tenon portion 35b is integrally formed at the lower end portion. The shaft diameter of the first tenon portion 35a and the shaft diameter of the second tenon portion 35b are substantially the same. The first tenon portion 35a is rotatably supported by an unillustrated ankle receiver, and the second tenon portion 35b is rotatably supported by the above-mentioned ground plate 102 (see FIG. 1).
A flange portion 36 is provided at substantially the center in the axial direction of the shaft portion 34. An ankle body 32 is placed on the flange portion 36.

FIG. 5 is a perspective view of the ankle body 32.
As shown in FIG. 5, an insertion hole 32 a into which the shaft portion 34 (see FIG. 2) of the pallet fork 33 can be inserted is formed in the connection portion of the two pallet beams 31 a and 31 b in the pallet body 32. By inserting the shaft portion 34 into the insertion hole 32a, the ankle body 32 is placed on the flange portion 36 (see FIG. 2) of the shaft portion 34.
As shown in FIG. 2, a slit 37 is formed at the tip of one of the two ankle beams 31a and 31b so that the escape wheel 11 side is opened. A protruding stone 38 is fixed to the slit 37 with, for example, an adhesive.

The protruding stone 38 is formed in a rectangular plate shape by ruby, for example, and protrudes inward in the radial direction of the escape wheel 11 from the tip of the ankle beam 31 a and in the axial direction of the escape wheel 11. It protrudes toward the escape wheel 11 along. The protruding stone 38 can be engaged with and disengaged from the tooth portion 23 of the escape wheel 11 by the rotation of the ankle 12.
A sliding surface 38 a that intersects the circumferential direction of the escape wheel 11 and that allows the teeth 23 of the escape wheel 11 to slide when the escape wheel 11 rotates is formed at the tip of the protruding stone 38. Has been. The tooth portion 23 of the escape wheel 11 is configured to slide on the sliding surface 38a when the engagement of the escape wheel 38 is released and the escape wheel 11 rotates. As a result, the protruding stone 38 moves toward the radially outer side of the escape wheel 11, and the ankle 12 rotates around the ankle true 33 about the central axis P of the ankle true 33.
In addition, the base end side of the sliding face 38 a of the protruding stone 38 is an engaging surface 38 b that engages with the tooth portion 23 of the escape wheel 11.

  As shown in FIG. 5, of the two ankle beams 31a and 31b, stagnation 46 and 47 are provided side by side in the width direction of the ankle beam 31b on the tip side of the other ankle beam 31b. Inclined surfaces 46a and 47a that are gradually inclined toward the base end side of the stagnation 46 and 47 from the outside in the width direction of the ankle beam 31b are formed at the distal end portions of the stagnation 46 and 47, respectively.

Inside the stag beetles 46 and 47, an uncoating lever 39 to which the first swing stone 57 (see FIG. 2) can be engaged and disengaged is formed by turning the swing seat 53 (see FIG. 2).
For example, a convex portion (not shown) is integrally formed on the root portion 39a of the ankle hook 39, and a sword tip 41 constituting the ankle hook 39 is attached to the convex portion.
The sword tip 41 includes a sword tip main body 42 and a disc-shaped attachment portion 43 that is integrally formed at the base end of the sword tip main body 42. The attachment portion 43 is integrally formed with a substantially cylindrical fitting portion 43a that can be fitted to the convex portion of the root portion 39a. The sword tip 41 is, for example, press-fitted and fixed in a state where the fitting portion 43a is fitted to the convex portion. The sword tip 41 may be bonded and fixed to the root portion 39a of the uncle box 39 with, for example, an adhesive.

  As shown in FIG. 2, a stone mounting hole 44 is formed on the base end side of the ankle lever 39 in the ankle beam 31 b on which the ankle lever 39 is formed. In the stone mounting hole 44, an entering pawl 45 is bonded and fixed by, for example, an adhesive. The entering pallet stone 45 is formed in a quadrangular prism shape by, for example, ruby or the like, and protrudes toward the escape wheel 11 side along the central axis P of the ankle true shaft 33 from the tip of the ankle beam 31b. A side surface of the entering pallet stone 45 facing the side opposite to the ankle true 33 is an engagement surface 45 a that engages with the tooth portion 23 of the escape wheel 11. The entering stone 45 can be engaged with and disengaged from the tooth portion 23 of the escape wheel 11 by the rotation of the ankle 12.

  A pair of dote pins 61a and 61b are provided on the opposite side of the escape wheel 11 with the ankle 12 therebetween. The carrier pins 61a and 61b are erected from the main plate 102 (see FIG. 1) and are higher than the position of the ankle 12 respectively. As the ankle 12 rotates, the ankle beams 31a and 31b come into contact with the dote pins 61a and 61b. Thereby, the rotation amount of the ankle 12 is regulated.

(Pushing seat)
As shown in FIG. 2, the swing seat 53 is provided on a balance 5 to be described later that rotates around the balance 51, and is a component of the balance 5 and a component of the escapement 1. Yes. The swing seat 53 is a member formed in a cylindrical shape, and is fitted and fixed to the stem 51 so as to be arranged coaxially with the central axis O of the balance stem 51. Like the escape gear portion 14, the swing seat 53 is a member formed of a material having a crystal orientation, such as a metal material or single crystal silicon, and is an optical element such as electroforming or photolithography. It is formed by a LIGA process, DRIE, MIM or the like that adopts a typical technique. The manufacturing method of the swing seat 53 is not limited to the above. For example, the swing seat 53 may be formed by machining a metal material.

FIG. 6 is a perspective view of the swing seat 53, and FIG. 7 is a plan view of the swing seat 53.
As shown in FIG. 6, the swing seat 53 includes two oscillating stones, a first oscillating stone 57 and a second oscillating stone 58.
The first calculus 57 and the second calculus 58 are each formed, for example, in a ruby. The first swing stone 57 is formed in a semicircular shape having a flat surface 57a on the outer side in the radial direction when viewed from the axial direction and an arcuate surface 57b on the inner side in the radial direction.
The second pendulum 58 is provided along the radial direction, and a tip portion projects from the outer peripheral surface of the swing seat 53 toward the outer side in the radial direction. A flat impact surface 58 a along the radial direction is formed on the protruding portion of the second oscillating stone 58. The tooth portion 23 (see FIG. 2) of the escape wheel 11 can collide with the impact surface 58a. In addition, an inclined surface 58 b that is inclined inward in the radial direction is formed on the protruding portion of the second oscillating stone 58.

The swing seat 53 includes an insertion hole 53a penetrating in the axial direction along the central axis O, and a large brim 54 formed at a position corresponding to the escape wheel 11 (see FIG. 2) in the true axial direction. A small brim 55 formed on the back side (lower side in FIG. 2) of the movement 101 (see FIG. 1) rather than the large brim 54, and a connecting portion 56 for connecting the large brim 54 and the small brim 55 are provided. 54, a small brim 55 and a connecting portion 56 are integrally formed.
The insertion hole 53a has a smaller diameter than the diameter of the fixed portion of the swing seat 53 in the balance stem 51 so that it can be press-fitted and fixed to the fixed portion of the swing seat 53 in the balance stem 51 (see FIG. 2).

As shown in FIG. 7, the large brim 54 is a disk-shaped member, and includes a through hole 54 a penetrating in the axial direction and a holding portion 70.
The through hole 54 a has a flat surface on the outer side in the radial direction and an arc on the inner side in the radial direction when viewed from the axial direction, and is formed in a semicircular shape corresponding to the shape of the first calculus 57. . A first oscillating stone 57 is press-fitted and fixed in the through hole 54a, for example. Thereby, the first oscillating stone 57 is provided along the axial direction so as to protrude from the large brim 54 toward the back side (lower side in FIG. 2) of the movement 101 (see FIG. 1). As shown in FIG. 2, the first swing stone 57 is closer to the movement 101 (see FIG. 1) than the position where the entering pallet stone 45 and the protruding pallet stone 38 contact the tooth portion 23 of the escape wheel 11. It is possible to engage with and disengage from the ankle lever 39 of the ankle 12 at a position on the back side and shifted in the axial direction of the balance stem 51.

As shown in FIG. 7, the holding unit 70 that holds the second oscillating stone 58 includes an opening 71 into which the second oscillating stone 58 can be inserted, and includes a contact portion 75 and an elastic deformation portion 77. Yes.
The opening 71 extends along the radial direction as viewed in the axial direction, and is formed so as to have a bottom portion 72 on the inner side in the radial direction, so that the second oscillating stone 58 can be inserted from the outer side in the radial direction.
Of the inner side surface of the opening 71, the side surface on the first oscillating stone 57 side is a regulation surface 71a formed flat. The regulation surface 71 a is in surface contact with the first side surface 59 a opposite to the impact surface 58 a of the second rock stone 58 in this embodiment, and regulates the position of the second rock stone 58 in the circumferential direction of the swing seat 53. doing.
Further, the radially outer edge of the opening 71 on the regulating surface 71a side is a chamfered tapered surface 71b. Thus, when the second oscillating stone 58 is inserted into the opening 71 of the holding portion 70 from the outside in the radial direction, the corner of the second oscillating stone 58 can be prevented from being caught on the edge of the opening 71, and the second The gangue 58 can be easily guided by being guided into the opening 71 of the holding portion 70.

Relief recesses 72 a are respectively formed at a pair of corners corresponding to the corners of the second rock stone 58 in the bottom 72. The escape recess 72a is formed in a curved shape that is recessed toward the inside in the radial direction. Thereby, even when the bottom 72 of the opening 71 and the second oscillating stone 58 come into contact with each other, interference between the corner of the second oscillating stone 58 and the corner at the bottom of the opening 71 can be prevented.
In addition, the bottom portion 72 communicates with the opening 71, and on the opposite side of the opening 71, on the opposite side of the first calculus 57, the bottom portion 72 is radially separated from the opening 71 from the inner side to the outer side in the radial direction. On the other hand, a slit 73 extending obliquely is formed. A portion between the end portion of the slit 73 on the outer side in the radial direction and the outer peripheral surface of the large brim 54 is an elastically deformable portion 77 formed thin in the radial direction. That is, the elastic deformation portion 77 is formed on the outer edge portion of the large brim 54 on the outer side in the radial direction than the slit 73.

  The contact portion 75 is formed in a triangular shape when viewed from the axial direction, is provided at a position facing the regulating surface 71 a of the opening 71, and is supported by the elastic deformation portion 77. The contact portion 75 has a contact surface 75 a that contacts the impact surface 58 a of the second rock stone 58. The contact surface 75a is formed in a V shape having a top portion 75b (corresponding to a “convex portion” in the claims) on the second oscillating stone 58 side when viewed from the axial direction.

The distance between the top portion 75 b of the contact surface 75 a and the regulating surface 71 a is narrower than the width of the second rock stone 58. Thereby, when the second oscillating stone 58 is inserted and arranged in the opening 71, the elastic deformation portion 77 is elastically deformed and the contact portion 75 is displaced, and the contact portion 75 causes the second oscillating stone 58 to move to the regulation surface 71a. It is in a state of being biased toward. At this time, the top portion 75b of the contact portion 75 and the impact surface 58a of the second rock stone 58 are in line contact with each other. At this time, the top portion 75b of the holding portion 70 and the impact surface 58a of the second rock stone 58 are in line contact with each other, and the regulation surface 71a of the holding portion 70 and the first side surface 59a of the second rock stone 58 are in surface contact with each other. To do. Accordingly, the position of the second oscillating stone 58 in the circumferential direction is determined by the restriction surface 71 a of the holding unit 70.
For example, an adhesive is filled in the gap between the second oscillating stone 58 and the opening 71 and the slit 73 in the holding unit 70. Thereby, the second oscillating stone 58 is firmly bonded and fixed to the holding portion 70.

As shown in FIG. 6, the small brim 55 is a disk-like member and has a smaller diameter than the large brim 54. On the outer peripheral surface 55 a of the small brim 55, a curved fluff 55 b that is recessed inward in the radial direction is formed at a position corresponding to the first swing stone 57. Tsukigata 55b is an escape portion that prevents the sword tip 41 (see FIG. 5) of the ankle 12 from coming into contact with the small brim 55 when the ankle 12 (see FIG. 2) is engaged with the first swing stone 57. Is functioning as Further, in the outer peripheral surface 55a of the small brim 55, the sword tip 41 of the ankle 12 can be slidably contacted with a partial region on both sides in the circumferential direction with the tack 55b interposed therebetween. When the sword tip 41 of the ankle 12 is in sliding contact with the small brim 55, the ankle 12 can be prevented from rotating even when the first oscillating stone 57 is detached from the ankle hook 39 (see FIG. 5). Therefore, after the first calculus 57 is detached from the ankle gear 39, the first calculus 57 comes into contact with the outer surface of the ankle gear 39, and the movement of the first calculus 57 is prevented by the ankle 12, and the balance 5 (see FIG. 2). ) Can be prevented, that is, so-called swing-off.
In addition, as shown in FIG. 2, the escapement 1 of the present embodiment secures a meshing amount between the entering pawl stone 45 and the exit pawl stone 38 and the tooth portion 23 of the escape wheel 11 beyond a predetermined necessary amount. Thus, in the operation of the escapement 1, the operating state in which the engagement of the entering pallet stone 45 and the exiting pallet stone 38 and the tooth portion 23 of the escape wheel 11 must not be released, for example, the first pallet stone In a state in which 57 is not in the uncle gear 39, the engagement between the entering pawl 45 and the exit pawl 38 and the tooth portion 23 of the escape wheel 11 is released due to a strong disturbance or the like, and the escape wheel 11 comes out, for example. The stagnation 46 and 47 press the first swing stone 57 by falling on the sliding surface 38a of the pallet stone 38 and the impact being transmitted from the escape wheel 11 to the ankle 12 and the ankle 12 rotating, or The sword tip 41 (see FIG. 5) presses the brim 55 In can balance 5 is pushed in the radial direction of the balance 5 by ankle 12, the abnormal operation arises that stops the rotation of the balance 5, also to prevent a so-called semi-shaking phenomenon.

(Governor, balance)
The balance 5 of the governor 2 has a balance stem 51 that is a rotating shaft, a balance wheel 52 that is externally fitted and fixed to the balance stem 51, the above-described swinging seat 53, and a hairspring (not shown). ing. Both ends of the balance stem 51 are rotatably supported by a balance holder and a base plate 102 (not shown). The balance wheel 5 is given the energy from the escape wheel 11 as a rotational force when the escape wheel 11 rotates and collides with the second oscillating stone 58. Further, the balance wheel 5 has the tooth portion 23 of the escape wheel 11 that slides on the sliding surface 38 a and the ankle 12 rotates and collides with the first pendulum 57, whereby the escape wheel 11 Energy is applied as rotational force. Furthermore, the energy of the escape wheel 11 is accumulated as a spring force in the balance spring of the balance with hairspring 5. Accordingly, the balance 5 can be freely vibrated around the central axis O of the balance spring 51 with a predetermined period by the rotational force by the energy applied from the escape wheel 11 and the spring force of the balance spring.
Then, the entering pallet stone 45 engages with the tooth portion 23 of the escape wheel 11, the state where the exit pallet stone 38 is detached from the tooth portion 23 of the escape wheel 11, and the The state in which the pallet stone 45 engages with the tooth portion 23 of the hour wheel 11 and is separated from the tooth portion 23 of the escape wheel 11 is repeated alternately. Thereby, the escape wheel 11 rotates at a constant speed.

According to the present embodiment, the holding unit 70 that holds the second oscillating stone 58 inserted into the opening 71 supports the abutting portion 75 so as to be displaceable, and faces the second oscillating stone 58. Since the elastic deformation portion 77 for urging is provided, when the second rock stone 58 is inserted from the opening 71, the contact portion 75 is displaced and the elastic deformation portion 77 is elastically deformed. Can be held by being energized. Thereby, when the second swing stone 58 is inserted into the opening 71 and the swing seat 53 is press-fitted into the balance 51, the stress concentration around the insertion hole 53a can be suppressed, so that the swing seat 53 can be prevented from being damaged.
Further, by providing the elastic deformation portion 77, the second oscillating stone 58 can be easily attached and detached by displacing the contact portion 75 even after the second oscillating stone 58 is held by the holding portion 70. 58 can be easily adjusted.

  Further, since the edge portion of the opening 71 of the holding portion 70 is a chamfered tapered surface 71 b, when the second rock stone 58 is inserted into the opening 71 of the holding portion 70, the edge portion of the opening 71 is It is possible to prevent the corner portion of the oscillating stone 58 from being caught and to easily attach the second oscillating stone 58 by guiding it into the opening 71 of the holding portion 70. Therefore, the workability of the assembly and position adjustment of the second oscillating stone 58 can be improved, and chipping of the second oscillating stone 58 can be prevented.

  Moreover, since the contact part 75 contacts the 2nd rock stone 58 by the top part 75b of the contact surface 75a, the contact part 75 and the 2nd rock stone 58 can be line-contacted. Thereby, since the urging force by the elastic deformation part 77 can be concentrated on the contact part of the contact part 75 and the 2nd rock stone 58, the 2nd rock stone 58 can be hold | maintained reliably.

  Further, since the elastic deformation portion 77 is formed at the outer edge portion of the large brim 54, the elastic deformation portion 77 can be formed at a position separated from the insertion hole 53a, and the stress at the time of deformation of the elastic deformation portion 77 is caused by the insertion hole 53a. Can be suppressed from occurring in the vicinity. Thereby, the stress concentration around the insertion hole 53a when the second pendulum 58 and the balance stem 51 are press-fitted can be surely suppressed, so that the swing seat 53 can be prevented from being damaged.

  Moreover, the weight of the swing seat 53 can be reduced by forming the swing seat 53 from a material mainly composed of silicon. Further, when silicon is the main component, the outer shape of the swing seat 53 can be formed with high accuracy by photolithography. Therefore, the swing seat 53 is suitable for reducing the weight and size.

Further, the swing seat 53 can come into contact with the first swing stone 57 that makes contact with the ankle 12 and rotates around the ankle stem 33 as the swing seat 53 rotates, and the tooth portion 23 of the escape wheel 11. Since the second swing stone 58 is provided, even if the escapement 1 requires lubrication to the entering pallet stone 45 and the exit pallet stone 38 and the tooth portion 23 of the escape wheel 11, The oil can be prevented from propagating to the contact portion between 57 and the ankle 12. Accordingly, an increase in viscous resistance due to the adhesion of oil or deterioration of the adhered oil can be prevented, and stable operation of the speed governor 2 including the escapement 1 and the balance with balance 5 can be secured. .
Further, the position of the second oscillating wheel 58, the outer diameter of the escape wheel 11, the separation distance between the balance wheel 51 and the center of rotation of the escape wheel 11 and the like are desired without depending on the position of the first oscillating wheel 57. Can be set. Thereby, since the impact range when the tooth part 23 of the escape wheel 11 collides with the second pendulum 58 can be set as desired, the balance between the energy transmission efficiency of the escapement 1 and the timing accuracy is desired. Can be set.

  Further, the engagement surface 45a of the entering pallet stone 45 and the engagement surface 38b of the exit pallet stone 38 are inclined by a predetermined angle α in the rotational direction of the escape wheel 11 with respect to the second straight line L2. When the tooth portion 23 of the pusher wheel 11 and the entering pallet stone 45 or the outgoing pallet stone 38 are engaged with each other, the entering pallet stone 45 and the outgoing pallet stone 38 are respectively engaged with the escape wheel 11 by the rotational torque of the escape wheel 11. Torque acts so as to be drawn to the 11 side. As a result, the engagement state between the tooth portion 23 of the escape wheel 11 and the entering pallet stone 45 and the exiting pallet stone 38 can be stabilized. It is possible to prevent the shift of the engagement position with the tooth portion 23 of the wheel 11. Therefore, the ankle 12 rotates due to a disturbance, and an abnormal operation that prevents free vibration of the balance 5 can be prevented by interfering with the balance 5 by, for example, the small brim 55 and the sword tip 41 contacting each other.

  Further, the swing seat 53 can be prevented from being damaged, and the high-performance movement 101 and the timepiece 100 having excellent timing accuracy can be obtained.

(Modification of the first embodiment)
FIG. 8 is a plan view of a swing seat 53 according to a modification of the first embodiment.
Subsequently, a swing seat 53 according to a modification of the first embodiment will be described.
In the swing seat 53 according to the first embodiment, the regulation surface 71a of the holding portion 70 is in surface contact with the first side surface 59a opposite to the impact surface 58a of the second swing stone 58 (see FIG. 7).
On the other hand, the swing seat 53 according to the modified example of the first embodiment is the first embodiment in that the regulation surface 71a of the holding unit 70 is in surface contact with the impact surface 58a of the second swing stone 58. Is different. In addition, below, description is abbreviate | omitted about the component similar to 1st embodiment, and only a different part is demonstrated.

Of the inner side surface of the opening 71, the side surface opposite to the first oscillating stone 57 side is a regulation surface 71a formed flat. The restricting surface 71 a is in surface contact with the impact surface 58 a of the second swing stone 58 and restricts the position of the impact surface 58 a of the second swing stone 58 in the circumferential direction of the swing seat 53.
The bottom portion 72 of the holding portion 70 communicates with the opening 71 and, on the first oscillating stone 57 side with the opening 71 interposed therebetween, is gradually separated from the opening 71 from the inside in the radial direction toward the outside. A slit 73 extending obliquely is formed.

  The distance between the top portion 75 b of the contact surface 75 a and the regulating surface 71 a is narrower than the width of the second rock stone 58. Thereby, when the second oscillating stone 58 is inserted and arranged in the opening 71, the elastic deformation portion 77 is elastically deformed and the contact portion 75 is displaced, and the contact portion 75 causes the second oscillating stone 58 to move to the regulation surface 71a. It is in a state of being biased toward. At this time, the top portion 75b of the holding portion 70 and the first side surface 59a of the second rock stone 58 are in line contact with each other, and the regulation surface 71a of the holding portion 70 and the impact surface 58a of the second rock stone 58 are in surface contact with each other. To do. As a result, the position of the impact surface 58a of the second oscillating stone 58 in the circumferential direction is accurately determined by the restriction surface 71a of the holding portion 70.

  According to the modification of the first embodiment, the second pendulum 58 is urged against the regulating surface 71a while bringing the impact surface 58a of the second pendulum 58 and the regulating surface 71a of the holding unit 70 into surface contact. Since it can hold | maintain in a state, the impact surface 58a of the 2nd pendulum 58 can be positioned accurately. As a result, the impact range when energy is transmitted by bringing the escape wheel 11 and the impact surface 58a of the second swing stone 58 into contact with each other can be set with high accuracy, so that the energy transmission efficiency is reduced due to variations in the impact range. Can be prevented.

(Second embodiment)
FIG. 9 is a perspective view of the swing seat 253 and the balance with hairspring 5 according to the second embodiment, and FIG. 10 is a plan view of the second swing seat body 253b constituting the swing seat 253 according to the second embodiment.
Next, the swing seat 53 according to the second embodiment will be described.
The swing seat 53 according to the first embodiment includes a large brim 54, a small brim 55, and a connection portion 56, and the first oscillating stone 57 and the second oscillating stone 58 are fixed to the large brim 54 (see FIG. 6). .
On the other hand, as shown in FIG. 9, the swing seat 253 in the second embodiment includes a first swing seat body 253a and a second swing seat body 253b, and the first swing seat body 253a has a first swing stone. 57 is fixed, and the second swing stone 58 is fixed to the second swing seat body 253b, which is different from the first embodiment. In addition, below, description is abbreviate | omitted about the component similar to the modification of 1st embodiment and 1st embodiment, and only a different part is demonstrated.

The swing seat 253 is a first swing seat body 253a and a second swing seat 253a provided on the balance wheel 52 side of the first swing seat body 253a so as to overlap the first swing seat body 253a in the axial direction of the balance stem 51. And a swing seat body 253b.
The first swing seat 253a includes a first large collar 254a, a small collar 55 formed on the back side (lower side in FIG. 9) of the movement 101 (see FIG. 1) with respect to the first large collar 254a, and a first large collar 253a. A connecting portion 56 for connecting the collar 254a and the small collar 55 is provided.
The first large brim 254a is formed with a through hole 54a penetrating in the axial direction, and the first oscillating stone 57 is press-fitted and fixed, for example.

  The 2nd swing seat body 253b is a disk-shaped member, and the whole becomes the 2nd large collar 254b. The second large brim 254b is provided with a holding portion 70 that holds the second oscillating stone 58. The holding part 70 includes an opening 71 into which the second rock stone 58 can be inserted, and includes a contact part 75 and an elastic deformation part 77. As shown in FIG. 10, the structure of the holding | maintenance part 70 is the same as the modification of 1st embodiment. That is, when the second oscillating stone 58 is inserted into the opening 71, the second oscillating stone 58 is urged toward the regulation surface 71a by the contact portion 75, and the regulation surface 71a of the holding unit 70 and the second oscillating stone are urged. 58 impact surfaces 58a are in surface contact with each other. As a result, the position of the impact surface 58a of the second oscillating stone 58 in the circumferential direction is accurately determined by the restriction surface 71a of the holding portion 70.

  Here, a chamfered portion 60 is formed at a corner portion formed by the first side surface 59 a opposite to the impact surface 58 a and the second side surface 59 b facing the bottom portion 72 among the side surfaces of the second oscillating stone 58. Is formed. The chamfered portion 60 has a C chamfered shape with corners removed. Thereby, when inserting the 2nd rock stone 58 in the opening 71 of the holding | maintenance part 70, it can prevent that the 2nd rock rock 58 is caught in the opening edge part by the side of the contact part 75. FIG. Note that the shape of the chamfered portion 60 is not limited to the C chamfered shape, and may be, for example, an R chamfered shape.

  According to the second embodiment, the first swing seat body 253a that holds the first swing stone 57 and the second swing seat body 253b that holds the second swing stone 58 are provided. Even when the first calculus and the second calculus are fixed, the stress generated by the fixing of the first calculus 57 and the stress generated by the fixing of the second calculus 58 are respectively expressed by the first swing It can disperse | distribute to the seat body 253a and the 2nd swing seat body 253b. Thereby, since the rigidity of the swing seat 253 can be secured, when the first swing stone 57 and the second swing stone 58 are fixed to the swing seat 253 and further press-fitted into the balance 51, the circumference of the insertion hole 53a of the swing seat 253 is increased. It is possible to suppress stress concentration on the surface. Therefore, breakage of the swing seat 253 can be reliably prevented. In particular, when the first oscillating stone 57 and the second oscillating stone 58 are disposed close to each other due to a demand for downsizing or the like, stress is applied to the first oscillating seat 253a and the second oscillating seat 253b while suppressing stress concentration. Therefore, the rigidity of the swing seat 253 is extremely effective.

Further, since the chamfered portion 60 is provided at the corner formed by the first side surface 59 a and the second side surface 59 b of the second oscillating stone 58, when the second oscillating stone 58 is inserted into the opening 71 of the holding portion 70. In addition, the second swing stone 58 can be prevented from being caught at the opening edge. Therefore, the workability of the assembly and position adjustment of the second oscillating stone 58 can be improved, and the chipping (chipping) of the second oscillating stone 58 due to the contact between the opening edge of the holding portion 70 and the corner of the second oscillating stone 58 is achieved. ) Can be prevented.
The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

The shapes and materials of the escape wheel 11, the ankle 12, the swing seats 53 and 253, the holding unit 70, the entering pallet stone 45, the exit pallet stone 38, the first pallet stone 57, the second pallet stone 58, etc. It is not limited to.
Moreover, in each embodiment, although the 2nd calculus 58 was hold | maintained by the holding | maintenance part 70, the 1st calculus 57 may be hold | maintained by the holding | maintenance part, and the 1st calculus 57 and the 2nd calculus 58 may be held by the holding portion.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Escapement machine 11 ... escape wheel 12 ... Ankle 23 ... Tooth part 33 ... Ankle true 38 ... Outlet stone (mesh stone) 45 ... Entering stone (Tailstone) 51 ... Tenshin 53 ... Swing seat 54 ... Large brim 57 ... First swing stone 58 ... Second swing stone 58a ... Impact surface 60 ... Chamfer DESCRIPTION OF SYMBOLS 70 ... Holding part 71a ... Restriction surface 75 ... Contact part 75b ... Top part (convex part) 77 ... Elastic deformation part 100 ... Timepiece 101 ... Movement (movement for timepiece) 253a: first swing seat body 253b: second swing seat body L1: first straight line L2: second straight line P: true center axis of ankle Q: rotation of escape wheel center

Claims (12)

A swinging seat that is truly fixed and has at least one flint
An insertion hole into which the balance is inserted,
A holding portion that has an opening into which the pebbles can be inserted;
With
The holding part is
A contact portion in contact with at least one of the side surfaces of the rock stone,
An elastically deformable portion that supports the abutting portion in a displaceable manner and biases the abutting portion toward the rock stone;
A swing seat characterized by comprising The swing seat according to claim 1,
The swing stone includes an impact surface to which an impact is applied from the outside,
The holding portion includes a regulation surface that contacts the impact surface,
The abutment portion is provided at a position facing the restriction surface. The swing seat according to claim 1 or 2,
The granite is formed in a prismatic shape,
A swing seat having a chamfered portion provided at a corner of the swing stone. The swing seat according to any one of claims 1 to 3,
A swing seat, wherein an edge of the opening of the holding portion is chamfered. The swing seat according to any one of claims 1 to 4,
The abutment portion has a convex portion that contacts the pendulum. The swing seat according to any one of claims 1 to 5,
The swing seat has a disc-shaped large brim formed with the holding portion and the insertion hole.
The swing seat according to claim 1, wherein the elastic deformation portion is formed on an outer edge portion of the large brim. The swing seat according to any one of claims 1 to 5,
The swing seat is formed by a first swing seat body and a second swing seat body,
As the flint, the first flint and the second flint
The first swing seat body holds the first swing stone,
The second swing seat body holds the second swing stone,
A swing seat, wherein the holding portion is provided on at least one of the first swing seat body and the second swing seat body. The swing seat according to any one of claims 1 to 7,
The swing seat is made of a material mainly composed of silicon. The swing seat according to claim 1;
With escape wheel,
An ankle that can rotate around the ankle,
With
As the swing stone, the swing seat comes into contact with the ankle as the swing seat rotates, and the first swing stone that rotates the ankle around the ankle, and the tooth portion of the escape wheel A second flintstone that can come into contact with
The holding unit holds at least one of the first pallet stone and the second pallet stone,
The ankle is provided with an entering pallet stone and an exit pallet stone that can be engaged with and disengaged from a tooth portion of the escape wheel as the ankle rotates, and rotate and stop the escape wheel. Escapement machine. An escapement according to claim 9,
The tooth portion of the escape wheel has a contact surface that comes into contact with the entering pallet stone and the protruding pallet stone,
The entrance pallet and the exit pallet each have an engagement surface that engages with the contact surface of the escape wheel,
A straight line connecting the true center axis of the ankle and the tooth tip of the tooth portion of the escape wheel is a first straight line when viewed from the axial direction of the center of rotation of the escape wheel, and a straight line orthogonal to the first straight line The second straight line
When the contact surface of the escape wheel is engaged with the engagement surface of one of the entering pallet stone and the calcination stone, the engagement surface is the second straight line. On the other hand, the escapement is inclined at a predetermined angle in the rotation direction of the escape wheel.   A timepiece movement comprising the escapement according to claim 9.   A timepiece comprising the timepiece movement according to claim 11.

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