JP3513403B2 - Mechanism clock - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical timepiece, and more particularly to a mechanical timepiece that moves a dial or the like at a predetermined time so that a decorative object such as a doll stored behind appears.

[0002]

2. Description of the Related Art A dial of a timepiece is composed of a plurality of divided pieces. For example, when the hour comes, the divided pieces are moved so as to separate, and a doll or other ornamental body housed behind them appears. Then, a mechanical clock that activates this ornament according to music has been developed and commercialized.

As such a mechanical timepiece, there are those disclosed in, for example, Japanese Patent Publication No. 8-10256 and Japanese Unexamined Patent Publication No. 8-68870. This special fair 8-1
In the mechanical clock disclosed in Japanese Patent No. 0256, the dial is formed by a plurality of substantially fan-shaped pieces that are divided into a plurality of pieces, and at a predetermined time, these pieces are rotated to spread in a petal shape, The decorative object such as a doll stored behind the dial is made visible. As a drive mechanism for rotating each of the divided pieces of the dial plate, a ring-shaped rack having teeth formed on the outer periphery thereof, and a plurality of gears arranged radially outside the rack so as to mesh with the rack. Etc. are provided, the respective pieces are fixed to the rotary shafts of the plurality of gears, and the rack is driven by a drive motor, so that the pieces can be freely opened and closed.

In the mechanical clock disclosed in Japanese Patent Laid-Open No. 8-68870, a dial is formed so that it can be divided into upper and lower parts, and at a predetermined time, the character plate is separated into upper and lower parts. The ornamental body such as a doll housed behind the dial can be seen.

[0005]

SUMMARY OF THE INVENTION In the mechanical timepiece disclosed in Japanese Patent Publication No. 8-10256, teeth are formed on the outer circumference as a drive mechanism for rotating each of the divided pieces of the dial. Since it employs a ring-shaped rack and multiple gears that are arranged on the outside in the radial direction of the rack so as to mesh with this rack, the entire timepiece becomes large in the radial direction, making it difficult to consolidate parts. There was a problem.

Further, the respective pieces of the dial which are rotated and opened are only supported by the rotary shaft, which may cause rattling in the front-rear direction, that is, flapping. It was Furthermore, the range of movement of each element forming the dial is the range of rotation around a fixed rotation axis, so it is not so noticeable, and in terms of the unexpectedness of dynamic changes, it is slightly powerful. There was a problem of lacking.

Also, in the mechanical timepiece disclosed in the above-mentioned Japanese Patent Laid-Open No. 8-68870, since the dial plate divided into the upper and lower parts is simply separated and moved up and down, the internal ornamental body should appear. Although it was possible, the change in appearance did not give a strong impression, and there was a problem that the change was not surprising.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to open and close the front of a decorative body while simplifying the structure and reducing the number of parts. It is an object of the present invention to provide a mechanical clock that is highly surprising in dynamic changes of dials and the like and can be given more excellent appreciation, and that can position the dials and the like when opening and closing the dials with high accuracy.

[0009]

As a result of intensive studies to achieve the above object, the present inventor has found an invention having the following structure. That is, the clockwork timepiece of the present invention is a clockwork timepiece having an opening / closing lid body which is arranged to be openable / closable and is formed by a plurality of divided pieces divided by a line passing through a predetermined axis, wherein the opening / closing lid body is formed. Opening / closing drive means for performing opening / closing operation while rotating the divided piece about its own axis and revolving around the predetermined axis, and restraint for preventing the divided piece forming the opening / closing lid body from swinging in the axial direction of the predetermined axis. And means.

In the mechanical timepiece having the above-mentioned structure, the opening / closing drive means has a sun gear fixed to the housing coaxially with the predetermined shaft, and a planetary gear meshing with the sun gear. One end is fixed to the center of rotation of the planetary gear and the other end is rotatable about the predetermined axis and a connecting member that is rotatably connected to the split piece at a position offset from the center of rotation. And a drive source that rotates the support member around the predetermined axis, and the restraining means includes:
A second connecting member, one end of which is rotatably connected to the supporting member and the other end of which is rotatably connected to the split piece at a position offset from the connecting position of the one end. Can be adopted.

In the mechanical timepiece having the above structure, the connecting member is a crank member having a step in the axial direction of the predetermined shaft, and the second connecting member is a second crank member having a step in the axial direction of the predetermined shaft. A configuration may be employed, which comprises: In the mechanical timepiece having the above structure, the dial plate is adopted as the opening / closing lid, and the axis of rotation of the pointer is adopted as the predetermined axis.
It can be configured.

In the timepiece timepiece of the present invention, at a predetermined time such as the hour, the opening / closing lid is driven by the opening / closing drive means, and the divided pieces forming the opening / closing lid rotate about a predetermined axis while rotating. It revolves around and opens and closes. At this time, the restraint means restrains the divided pieces in the open state as well as in the closed state so as not to swing in the axial direction of the predetermined axis.

In the mechanical timepiece having the above structure, the opening / closing drive means is composed of the sun gear, the planetary gear, the connecting member, the supporting member, the drive source and the like, and the restraining means is composed of the second connecting member as described above. When the support member is rotated by the drive source, the planetary gear meshing with the sun gear revolves around the sun gear while rotating, and the connecting member also rotates together with the planetary gear and connects with the connecting member. The separated pieces rotate around and revolve around the center of rotation of the support member to perform the opening / closing operation. At this time, the second connecting member restrains the split piece in the open state from swinging in the axial direction of the predetermined axis.

In the mechanical timepiece having the above-mentioned structure, when the dial plate is adopted as the opening / closing lid and the rotary shaft of the pointer is adopted as the predetermined shaft, the dial plate performs the opening / closing operation as described above. For example, when a decorative body is stored behind it, this decorative body appears.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a clockwork timepiece according to the present invention will be described below with reference to the accompanying drawings which are partially shown as perspective views for convenience of explanation. 1A and 1B show an embodiment of a mechanical timepiece according to the invention. FIG. 1A is a front view of the mechanical timepiece, and FIG. The front view which shows a state, (c) is a longitudinal cross-sectional view in the EE part in (a). Mechanical clock 1 according to this embodiment
Is a casing 2 that defines an outer contour, a glass 3 that closes the front of the casing 2, a predetermined axis, that is, a long hand 4a and a short hand 4b.
A dial plate 6 including a left dial plate 6a and a right dial plate 6b as a split piece that forms an opening / closing lid body that is divided in two at a line L that passes through the rotary shaft 5 of the like, and behind the dial plate 6. The housed decorative body 7, a rotary plate 20 as a rotary body or a supporting member located further behind the decorative body 7, and a rotary ornament 9 located below the dial 6 and rotating around a vertical axis.
And an opening / closing drive means (not shown) for performing the opening / closing operation while revolving the left dial 6a and the right dial 6b around the rotation axis and the rotary shaft 5, and a movement (not shown) for driving the long hand 4a, the short hand 4b and the like. Etc. are provided as the basic configuration.

2 to 4 are provided on the rear side of the housing 2.
As shown in FIG. 1, the fixed plate 1 fixed to the housing 2
0 is arranged. In front of the fixed plate 10, a rotary plate 2 having a circular contour as a supporting member is formed at a predetermined interval.
0 is arranged, and the rotary plate 20 is laminated with the first rotary plate 21 located on the fixed plate 10 side and the first rotary plate 21 with a predetermined gap therebetween and is integrated with the first rotary plate 21. It has a two-stage structure with the second rotary plate 22 that is coupled so as to rotate.

The first rotary plate 21 and the second rotary plate 22.
Is fixed to the fixed plate 10 so as to project forward from the fixed plate 10 and fixed to the cylindrical pipe 23 that guides the rotary shaft 5 of the pointers 4 (4a, 4b). , 22a are externally fitted and are rotatable around the cylindrical pipe 23. A driven gear 24 is fixed to the back surface of the first rotary plate 21 coaxially with the rotation axis of the first rotary plate 21, and the driven gear 24 is arranged on the back surface of the fixed plate 10. Motor 2 as a driving source
5. A rotational driving force is applied through a gear train 26 including a drive gear 25a, a two-stage gear 26a, and small gears 26b to 26e fixed to the spindle of the motor 25. That is, the rotation of the motor 25 causes the first rotary plate 21 and the second rotary plate 22 to move to the rotary shaft 5 of the pointer 4.
It is designed to rotate about the same axis. Further, the roller 11 provided on the fixed plate 10 allows the first rotating plate 21
The outer peripheral edge portion of is supported so that the rotation operation thereof can be smoothly performed. The cylindrical pipe 23
At the rear end of the rotating shaft 5 inserted through the inside of the
A movement M fixed on the back of the
The movement M controls the operation of the pointer 4.

A sun gear 30 is fitted between the first rotary plate 21 and the second rotary plate 22 and fixed to the cylindrical pipe 23 so as not to rotate. Four planetary gears 31 are arranged at substantially equal intervals in the circumferential direction so as to mesh with 30, and a shaft portion 31 a formed at the center of these planetary gears 31 has a first rotating plate 21 and a second rotating plate 21.
It is fitted into bearing holes 21b, 22b formed in the rotary plate 22 and is rotatably supported. Further, between each of the four planetary gears 31, similarly, four ornamental gears 32 are arranged so as to mesh with the sun gear 30, and are formed in the central portions of these ornamental gears 32. Shaft 32a
Is fitted into bearing holes 21c, 22c formed in the first rotary plate 21 and the second rotary plate 22, and is rotatably supported.

An end portion of the shaft portion 31a of the planetary gear 31 projects from the front surface of the second rotary plate 22, and this end portion is connected with a step in the axial direction (front-back direction) of the rotary shaft 5. One end 33 of the crank member 33 as a member
a is fixed. On the other hand, the other end portion 33b of the crank member 33 is formed as an annular portion having a connecting hole 33b ', and the connecting hole 33b' of the annular portion is formed on the left dial 6a.
And a cylindrical connecting shaft 6c formed so as to project from the rear surface of the right dial 6b, and is rotatably connected.

In the closed state where the left dial plate 6a and the right dial plate 6b are joined, the four crank members 33 are
As shown in FIG. 2, a pair of upper and lower other end portions 33b are arranged close to each other and aligned in a straight line.

A sun gear 30 which is fixed to the housing 2 so as not to be rotatable coaxially with the rotary shaft 5, a planetary gear 31 meshing with the sun gear 30, and a shaft portion 31a which is the center of rotation of the planetary gear 31. One end 33a is fixed to the other end 33b
Is composed of a crank member 33, a first rotary plate 21 and a second rotary plate 22, which are rotatably connected to the left dial plate 6a and the right dial plate 6b, which are split pieces, at positions offset from the shaft portion 31a. Plate 20, motor 25, drive gear 25
Opening and closing by which the left dial 6a and the right dial 6b forming the dial 6 serving as the opening / closing lid are rotated and revolved around the rotation axis 5 by the a, the gear train 26, the driven gear 24, etc. Driving means is configured.

As shown in FIGS. 2 and 4, a crank similar to the above crank member 33 is provided between the first rotary plate 21 and the second rotary plate 22 and the left dial plate 6a and the right dial plate 6b. Shaped, left dial 6a and right dial 6
Two second crank members 34 as restraint means, that is, a second connecting member, for restraining b from swinging in the axial direction (front-back direction) of the rotating shaft 5, that is, a second connecting member are arranged. This 2
The second crank members 34 are arranged symmetrically with respect to the line L, and have the left dial plate 6a and the right dial plate 6b.
The other end portions 34b are arranged so as to be close to each other in the closed state in which the two are joined, and the one end portion 34a is rotatably connected to the first rotary plate 21 and the second rotary plate 22 and the other end The portion 34b is rotatably connected to the left dial 6a and the right dial 6b, respectively.

By providing such a second crank member 34, in particular, the swing or rattling of the left dial plate 6a and the right dial plate 6b in the opened state is suppressed or prevented.

Further, as shown in FIG. 5, the second rotary plate 2
Between the 2 and the left dial plate 6a and the right dial plate 6b, there are arranged four ornamental bodies 7 each having a substantially circular shape and various decorations. The shaft 32 a of the gear 32, that is, the end of the shaft 32 a protruding from the front surface of the second rotary plate 22 is fixed. Therefore, when the rotating plate 20 (21, 22) is rotated by the rotation of the motor 25, the ornament 7 rotates about its axis and revolves around the rotating shaft 5 by the rotation and revolution of the ornament gear 32. It will be.

When arranging the decorative body 7, the crank member 33 is used as a connecting member for connecting the planetary gear 31 and the dial 6, or the second crank is used as a second connecting member for preventing the dial 6 from swinging. Since the member 34 is adopted, a sufficient space can be secured between the dial plate 6 and the second rotary plate 22, and the decorative body 7 can be easily arranged at a predetermined position in this space. .

In the outer peripheral area of the back surface of the fixing plate 10, as shown in FIG.
As shown in FIG. 4, a swing arm 42 is disposed on the support shaft 41 implanted in the fixed plate 10 so as to be swingable, and one end portion 42 a thereof is formed on the fixed plate 10. An engagement pin 42 a ′ that passes through an opening (not shown) and reaches the front of the first rotary plate 21 is provided. In addition, the other end portion 42 b has the switch 4 fixed to the fixed plate 10.
3 can be engaged.

On the other hand, the outer peripheral edge portion of the first rotary plate 21 is formed with a tapered concave portion 44 as a locking portion that expands in a tapered shape toward the outer side in the radial direction, and the left dial plate 6a and the right dial plate 6a are formed. With the dial plate 6b joined and closed, the engagement pin 42a 'enters the tapered recess 44, that is, the swing arm 42 rotates in the R direction, and the other end 4
2b is separated from the switch 43 or the pressing force by the other end 42b is reduced, the switch 43 is turned off, and the rotation of the motor 25 is stopped. When the swing arm 42 rotates in the direction opposite to the R direction, the other end 4 again.
2b engages with or presses the switch 43, and the switch 43 is turned on.

Further, a guide swing lever 46 is arranged on the support shaft 45, which is planted so as to project from the rear surface of the first rotary plate 21, so as to be swingable. A guide groove 46a opening outward is formed on the swing end side of the moving lever 46, and the swing end portion 46b is formed.
Both outer peripheral surfaces are formed to be curved, and an elongated hole 46c extending in the swinging direction is formed in a substantially central portion. In addition, a stopper pin 47 which is planted in the first rotary plate 21 and projects from the rear surface thereof is loosely inserted in the elongated hole 46c, and the guide swing lever 46 swings within a predetermined range. Is regulated by. Further, the swing end 4
6b projects slightly outward in the radial direction from the outer peripheral surface of the first rotary plate 21.

That is, the first rotary plate 21 is shown in FIG.
When the engaging pin 42a 'of the swing arm 42 approaches the tapered concave portion 44 by rotating in the R1 direction, the engaging pin 42a' first moves to the right swing end of the guide swing lever 46, as shown in FIG. Abutment (engagement) with the portion 46b, and the guide swing lever 46
Is swung in the direction opposite to the R1 direction. And the long hole 46c
When the right side surface of the contact pin 42 abuts against the stopper pin 47 and further swinging is prohibited, the engaging pin 42a ′ moves to the right swing end portion 4a.
Riding on the outer peripheral surface of 6b, the first rotary plate 21 is R1
7B, the engaging pin 42a 'is disengaged from the right swing end 46b and is guided in the guide groove 4 as shown in FIG. 7B.
It is guided by 6a and enters the substantially central portion of the tapered recess 44.

On the other hand, as shown in FIG. 7C, the first rotary plate 21 rotates in the opposite R2 direction to rotate the swing arm 42.
When the engagement pin 42a ′ of the above approaches the tapered recess 44, the engagement pin 42a ′ first abuts (engages) with the left swing end portion 46b of the guide swing lever 46, as described above. The guide swing lever 46 is swung in the direction opposite to the R2 direction. Then, when the left side surface of the long hole 46c abuts the stopper pin 47 and further rocking is prohibited, the engagement pin 42a 'rides on the outer peripheral surface of the left rocking end portion 46b, and further, the first pin.
When the rotary plate 21 rotates in the R2 direction, as shown in FIG. 7D, the engagement pin 42a 'is disengaged from the left swing end portion 46b and guided by the guide groove 46a, and the tapered concave portion 44 is substantially removed. Enter the central part.

As described above, since the guide swing lever 46 is provided, the engaging pin 42a 'is provided with the tapered concave portion 44 regardless of which direction the first rotary plate 21 rotates. The switch 43 can be reliably turned off at a predetermined timing by entering the substantially central portion.

The swing arm 42, an engagement pin 42a 'provided at one end 42a of the swing arm 42, a tapered recess 44 as a locking portion, a switch 43 for on / off controlling the operation of the motor 25, etc. As a result, the first rotary plate 21 as a rotary body or the opening / closing lid, that is, the dial plate 6 (6a, 6a
b) has reached the predetermined rotation angle position, or
A detection unit 40 is configured to detect that the closed position in the closed state is moved to the open position and the operation position is returned to the open position.

Incidentally, a combination of a swing arm, an engaging pin, a tapered recess, a switch and the like similar to the above is separately provided,
For example, a detection means for detecting that the dial 6 (6a, 6b) has reached the position where it rotates and revolves 180 °, that is, the most opened state is formed. In this state, the motor 25 is stopped and this opened state is set. It is also possible to adopt a holding structure. According to this configuration, when exhibited for consumers, it is possible to clearly show one mode of the mechanism of the mechanism clock, that is, the state in which the decorative body 7 appears.

As shown in FIG. 8, the left dial plate 6a forming the dial plate 6 has a first stopper piece 51 protruding rearward in the upper region of the rear surface thereof and in the region near the dividing surface.
On the other hand, the right positioning dial 6b forming the dial 6 is provided with a first positioning lever with respect to the supporting shaft 52 projecting rearward in the upper region of the rear surface and in the region near the dividing surface. 53 is swingably provided. The first positioning lever 53 has an engaging piece 53 on its swing end side.
a is formed, and a long hole 53b extending in the swinging direction is formed in the substantially central portion, and a stopper pin 54 protruding from the back surface of the right dial 6b is loosely inserted in the long hole 53b, and 1 The swinging motion of the positioning lever 53 is restricted within a predetermined range.

As shown in FIG. 8, the right dial plate 6b forming the dial plate 6 is provided with a second stopper piece 55 projecting rearward in the lower region of the back surface and in the region near the dividing surface. On the other hand, the left dial plate 6a forming the dial plate 6 is fixed to the second positioning lever 57 with respect to the support shaft 56 protruding rearward in the lower region of the rear surface and in the region near the dividing surface. Is swingably provided.
The second positioning lever 57 has an engaging piece 57a formed on the swing end side thereof, and an elongated hole 57b extending in the swing direction formed at the substantially central portion thereof. A stopper pin 58 projecting from the above is loosely inserted into the elongated hole 57b to regulate the swinging motion of the second positioning lever 57 within a predetermined range.

In the above structure, the left and right dial plates 6a and 6 are driven to open and close by the above-mentioned opening and closing drive means.
When b is driven to rotate clockwise in FIG. 8, the first stopper piece is moved to the closed rest position from the closed rest position to the closed rest position as shown in FIG. 51
The lower side surface 51b is the engagement piece 53 of the first positioning lever 53.
a is engaged with the upper side surface 53a ', and the second stopper piece 55
The upper side surface 55a is the engagement piece 57 of the second positioning lever 57.
It engages the lower side surface 57a '' of a. And the long hole 53b
The upper side surface and the lower side surface of the long hole 57b are in contact with the stopper pins 54 and 58, that is, the left dial plate 6
The left dial 6a and the right dial 6b are located at positions where the divided surfaces of the a and the right dial 6b are aligned in the vertical direction.
Will be positioned relative to each other.

Further, in the above structure, when the left and right dial plates 6a and 6b are driven to be opened and closed by the above-mentioned opening and closing drive means, and are rotated counterclockwise in FIG. 8, they are opened from the rest position in the closed state. The upper side face 51 of the first stopper piece 51 when approaching the rest position in the closed state again through the operating position in the state
a is the lower surface 5 of the engaging piece 53a of the first positioning lever 53
3a ″ and the lower side surface 5 of the second stopper piece 55.
5b engages with the upper side surface 57a 'of the engagement piece 57a of the second positioning lever 57. The lower side surface of the long hole 53b and the upper side surface of the long hole 57b are respectively stopper pins 54 and 58.
The left dial plate 6a and the right dial plate 6b are positioned with respect to each other at a position where they are in contact with each other, that is, at a position where the split surfaces of the left dial plate 6a and the right dial plate 6b coincide with each other in the vertical direction.

By the first stopper piece 51 and the first positioning lever 53, the second stopper piece 55, the second positioning lever 57, etc., the left dial plate 6a and the right dial plate 6b, which are the lids, are returned to the rest position. The first positioning means 50 is provided for positioning the dividing surface between the left dial plate 6a and the right dial plate 6b when they are closed.

Further, on the rear surface of the left dial plate 6a and the right dial plate 6b, two biasing levers 6 which are long in the vertical direction and reciprocate in the horizontal direction in the closed state are formed in the divided surface area.
1, 62 are arranged. This urging lever 61, 62
Is a long hole 61 extending in the horizontal direction at the substantially central portion thereof.
a, 62a are formed, and the long holes 61a, 62a are formed.
On the other hand, the guide pins 63 and 64 protruding rearward from the left dial plate 6a and the right dial plate 6b are loosely fitted,
The elongated holes 61a and 62a can be reciprocated in the extending direction.

Engaging pieces 61b, 62b are formed on both ends of the biasing levers 61, 62, and engaging protrusions 61c, 6 are formed on a part of the engaging pieces 61b, 62b.
2c is formed. On the other hand, engagement protrusions 67 and 68 are integrally formed on the outer peripheral surface of the other end portion 33b of the crank member.

Further, urging springs 65 and 66 are provided between the guide pins 63 and 64 and the urging levers 61 and 62, and in the closed state, the engaging protrusion 61c and the engaging protrusion 67 are provided. Are engaged with each other and the engaging projections 62c and the engaging projections 68
In the state other than the closed state, the biasing levers 61 and 62 are biased so that the engaging piece 61b and the engaging piece 62b engage with the outer peripheral surface of the other end 33b. ing.

That is, there is a slight gap between the connecting shaft 6c of the left dial 6a and the right dial 6b and the connecting hole 33b 'formed in the other end 33b of the crank member 33 in the connected state. Therefore, especially in the closed state, the biasing levers 61 and 62 bias the left dial plate 6a and the right dial plate 6b so as to approach each other so as to absorb this gap, and the gap between the division surfaces is as small as possible. Make sure that both split surfaces are in close contact so that they do not occur. Note that the above-mentioned gap is necessary to absorb variations in dimensions in manufacturing technology.

In the above configuration, when the left dial plate 6a and the right dial plate 6b rotate clockwise in FIG. 8 and return to the rest position in the closed state again, the engagement protrusion 67 and the engagement protrusion 61c are formed. The left dial plate 6a is pressed downward by the engagement of the left side dial plate 6a, and the right side dial plate 6b is pressed upward by the engagement between the engagement protrusion 68 and the engagement protrusion 62c.
Positioning of the divided surfaces of the a and the right dial 6b is performed with higher accuracy.

Similarly, the left dial 6a and the right dial 6
When b rotates counterclockwise in FIG. 8 and returns to the rest position in the closed state again, the engagement between the engagement protrusion 67 and the engagement protrusion 61c pushes the left dial 6a upward, and The right protrusion 6b is pressed downward by the engagement between the engagement protrusion 68 and the engagement protrusion 62c, so that the division surfaces of the left dial 6a and the right dial 6b are positioned with higher accuracy. Become.

The biasing levers 61 and 62, the biasing spring 6
5, 66, engaging protrusions 61c, 62c and engaging protrusion 67,
When the left dial plate 6a and the right dial plate 6b, which are the opening / closing lids, are returned to the rest position and brought into the closed state by 68 or the like,
A second positioning means 60 for positioning the division surface between the left dial 6a and the right dial 6b is formed.

As shown in FIG. 9, a stopper pin 71 is formed on the rear surface of the first rotary plate 21 so as to project rearward, and a support shaft 72 is planted on the front surface of the fixed plate 10.
On the other hand, a swing lever 73 is swingably provided.
The swing lever 73 has an engaging piece 73 on the swing end side.
a is formed, and a long hole 73b is formed in the substantially central portion, and a stopper pin 74 planted in the fixed plate 10 is loosely fitted in the long hole 73b to swing the swing lever 73. Dynamic motion is restricted within a predetermined range.

That is, when the first rotary plate 21 is rotated clockwise as shown in FIG. 9 to return to the rest position where the dial 6 is closed again, in this rest position,
The stopper pin 74 abuts on the right side surface of the long hole 73b, and the stopper pin 71 abuts on the right side surface of the engaging piece 73a of the swing lever 73 in a state where further swinging is prohibited, and the first rotation Further rotation of the plate 21 is prevented. As a result, the first rotary plate 21 or the dial 6 can be reliably stopped at the rest position.

When the first rotary plate 21 is rotated in the direction opposite to that of FIG. 9 and returns to the rest position where the dial 6 is closed again, the left side surface of the slot 73b is in this rest position. The stopper pin 74 abuts on the left side surface of the engaging piece 73a of the rocking lever 73 in a state in which further rocking is prohibited, and the stopper pin 71 abuts against the left side surface of the first rotating plate 21. Rotation is prevented. As a result, the first rotary plate 21 or the dial 6 can be reliably stopped at the rest position.

Next, the operation of the clockwork timepiece according to this embodiment will be described. As shown in FIG. 10, the dial 6
When (6a, 6b) is in the closed state, that is, in the rest position, at a predetermined time, for example, the hour, a control unit (not shown)
Generates a drive signal, the motor 25 rotates in one direction, and the driven gear 24 and the rotary plate 2 are transmitted via the gear train 26.
0 (21, 22) starts rotating clockwise, for example, in FIG.

By the clockwise rotation of the rotary plate 20, the planetary gear 31 revolves around the sun gear 30 while revolving,
Further, the crank member 33 also revolves while rotating clockwise in the same manner. Due to the clockwise rotation of the crank member 33, the right dial 6b revolves around the rotary shaft 5 while rotating in the clockwise downward direction, while the left dial 6a rotates around the rotary shaft 5 while rotating in the clockwise upward direction. Revolve around.

Then, after revolving 90 °, FIG.
As shown in FIG. 7, the right dial 6b is laterally positioned on the lower side, while the left dial 6a is laterally positioned on the upper side, the dial 6 is in a half-opened state, and the decorative body 7 stored behind is placed. Begins to appear. At this time, the decorative body 7 is
By the clockwise rotation of the ornamental gear 32, it revolves around the rotating shaft 5 while rotating clockwise.

When the rotary plate 20 further rotates and reaches the position where the dial plate 6 revolves 180 °, the right dial plate 6b is turned upside down and positioned to the left side, while the left character plate is rotated, as shown in FIG. The plate 6a is turned upside down and positioned on the right side, the dial 6 is in a fully opened state, and the ornamental body 7 stored behind appears completely. At this time, the decorative body 7
Revolves around the rotating shaft 5 while rotating in the clockwise direction as described above.

When the rotary plate 20 further rotates and the dial 6 revolves up to about 360 °, when the left dial 6a and the right dial 6b come close to each other and join, the first stopper piece 51 and the first stopper piece 51 and The first positioning means 50 including the first positioning lever 53, the second stopper piece 55, the second positioning lever 57, etc. positions the split surface between the left dial plate 6a and the right dial plate 6b.

At the same time, the second positioning means 60 including the urging levers 61 and 62, the urging springs 65 and 66, the engaging protrusions 61c and 62c, the engaging protrusions 67 and 68, and the left dial 6a. When the right dial plate 6b and the right dial plate 6b are brought close to each other and joined, the left dial plate 6a is urged to push down from the upper side, and the right dial plate 6b is urged to push up from the lower side. Thereby, the first positioning means 5
Positioning of the divided surfaces of the two by 0 will be performed with higher accuracy.

When the dial 6 revolves 360 °,
The detection means 40, that is, the engagement pin 42 of the swing arm 42
a ′ enters the tapered recess 44 of the first rotary plate 21 while being guided by the guide swing lever 46, and the switch 43
Is turned off to stop the operation of the motor 25.

At this time, the left dial plate 6a and the right dial plate 6b are reliably positioned by the first positioning means 50 and the second positioning means 60, and the stopper pin of the first rotary plate 21 is also positioned. 71 comes into contact with the engaging piece 73a of the swing lever 73 of the fixed plate 10 and further rotation is prohibited, and the dial 6 is positioned and held with high precision in the rest position in the closed state.

The opening / closing operation of the dial 6 at the hour or the like may be ended in the above stroke, or the clockwise rotation of the dial 6 may be followed by the counterclockwise rotation in the opposite direction. It can also be terminated when the rest position is reached again. The counterclockwise operation in this case is basically the same as the above-described clockwise operation, and thus the description thereof is omitted here.

In the embodiment described above, the dial 6
Was divided into two, but is not limited to this, for example,
Further, it is divided into four in the horizontal direction, and each divided piece is divided into one crank member 33 and one second crank member 34.
It is also possible to adopt a configuration of connecting to.

[0059]

As described above, according to the clockwork timepiece of the present invention, at a predetermined time such as the hour, an opening / closing lid body such as a dial or the like rotates and revolves around a predetermined axis to open and close. , For example, when the ornament is stored behind,
Make this ornament appear. Therefore, the change of the mechanism as a mechanical clock becomes more unexpected and excellent appreciation can be obtained.
Further, at the time of this opening / closing operation, the divided pieces forming the opening / closing lid such as the dial are held by the restraining means so as not to swing in the axial direction of the predetermined axis, and the rattling thereof can be prevented.

In the mechanical timepiece having the above-mentioned structure, the opening / closing drive means for opening / closing the opening / closing lid such as a dial is constituted by a sun gear, a planet gear, a connecting member, a supporting member, a drive source, and the restraining means. When the second connecting member is used, the components can be gathered around a predetermined axis,
As a result, the timepiece body can be downsized in the radial direction.

In the mechanical timepiece having the above structure, when the connecting member and the second connecting member are the crank member and the second crank member, a sufficient space can be secured between the opening / closing lid and the supporting member. The decoration can be easily arranged.

[Brief description of drawings]

FIG. 1 shows a mechanical clock of the present invention,
(A) is a front external view, (b) is a front external view in the state where the dial was opened, (c) is a vertical cross-sectional view taken along the line EE in (a).

FIG. 2 is a schematic configuration diagram showing opening / closing drive means of the mechanical timepiece of the invention.

FIG. 3 is a right side view of the opening / closing drive means shown in FIG.

FIG. 4 is a bottom view of the opening / closing driving means shown in FIG.

FIG. 5 is a front view showing a decorative body forming a part of the mechanical clock of the present invention.

FIG. 6 is a front view showing a detection means forming a part of the clockwork timepiece of the present invention.

7A and 7B are diagrams for explaining the operation of the detection means shown in FIG. 6, and FIGS. 7A to 7D are state diagrams at respective operation stages.

FIG. 8 is a front view showing a positioning means forming a part of the clockwork timepiece of the present invention.

FIG. 9 is a front view showing another positioning means.

FIG. 10 is a front view showing a case where the dial is in a closed position in a rest position.

FIG. 11 is a front view showing a case where the dial is in an operating position in which the dial revolves 90 °.

FIG. 12 is a front view showing a case where the dial is in an operating position in which the dial revolves 180 °.

[Explanation of symbols]

1 Karakuri clock 2 housing 4 guidelines 5 rotation axes 6 dial (opening / closing lid) 6a Left dial (divided piece) 6b Right dial (divided piece) 7 decoration 10 Fixed plate 11 Laura 20 Rotating plate (supporting member) 21 First rotating plate 22 Second rotating plate 23 Cylindrical pipe 24 Driven gear 25 Motor (drive source) 25a drive gear 26 gear train 30 sun gear 31 planetary gears 32 Gears for ornaments 33 Crank member (connecting member) 34 second crank member (second connecting member) 40 Detection means 42 Swing arm 42a 'engagement pin 43 switch 44 Tapered recess (locking part) 46 Guide swing lever 47 Stopper pin 50 First Positioning Means 51 First Stopper Piece 52 First positioning lever 55 Second stopper piece 57 Second positioning lever 60 Second positioning lever 61 bias lever 61c Engagement protrusion 62 bias lever 62c engaging protrusion 65 bias spring 66 bias spring 67 Engagement protrusion 68 Engagement protrusion 71 Stopper pin 73 Swing lever 74 Stopper pin

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G04B 45/00 G04B 25/06 G04C 23/00 G04C 3/00

Claims (4)

(57) [Claims] 1. A mechanical timepiece having an opening / closing lid body which is openably / closably arranged and is formed by a plurality of dividing pieces divided by a line passing through a predetermined axis, wherein the dividing piece forming the opening / closing lid body is An opening / closing drive means for performing an opening / closing operation while revolving around the axis of rotation and the predetermined axis, and a restraint means for restraining the split piece forming the opening / closing lid body so as to prevent swinging in the axial direction of the predetermined axis, A mechanical clock characterized by having. 2. The opening / closing drive means includes a sun gear fixed to the housing coaxially with the predetermined shaft, the planetary gear meshing with the sun gear, and a rotation center of the planetary gear. A connecting member, one end of which is fixed to the other end and the other end of which is rotatably connected to the split piece at a position offset from the center of rotation; The restraint means includes a support member that rotatably supports the gear and a drive source that rotates the support member around the predetermined axis, and the restraining means has one end rotatably connected to the support member and the other. The mechanical timepiece according to claim 1, wherein the end portion includes a second connecting member rotatably connected to the split piece at a position offset from the connecting position of the one end portion. 3. The connecting member is a crank member having a step in the axial direction of the predetermined shaft, and the second connecting member is a second crank member having a step in the axial direction of the predetermined shaft. The mechanical clock according to claim 2. 4. The mechanical timepiece according to claim 1, wherein the opening / closing lid is a dial plate, and the predetermined axis is coaxial with a rotation axis of a pointer.