JP2008164509A - Pendulum device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pendulum device constituted rationally. <P>SOLUTION: This pendulum device is provided with a pendulum 100 supported swingably in a casing 10, and a pendulum driving means 300 for swinging the pendulum. The pendulum is provided with a magnet 111 in a upper portion of a fulcrum thereof, another magnet 11 corresponding to the magnet 111 is provided in an outside of the pendulum, and a portion lower than the fulcrum of the pendulum is prevented from abutting to the casing, by repulsing the magnet 111 from the magnet 11, when the casing is inclined. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pendulum device used for decoration of a watch or the like.

Known wall clocks and table clocks are equipped with a pendulum device for decoration. The pendulum device is configured such that a pendulum provided with a magnet is supported by a support and a pendulum driving means that acts on the magnet is arranged outside the pendulum. This type of pendulum device is also disclosed in Patent Document 1. The pendulum device disclosed in Patent Document 1 uses a pendulum formed by assembling a plurality of members. By reversing the vertical position of the assembled member, the degree of freedom in setting the cycle can be increased. It has become possible.
JP 2005-140543 A

  In recent years, the design of watches has been increasingly diversified, and the above-mentioned pendulum device is also expected to have excellent decorativeness, improved versatility, ease of assembly, and stability during driving. It is rare. This invention is made | formed in view of this situation, The objective is to provide the pendulum apparatus comprised more rationally.

  The invention described in claim 1 of the present application is a pendulum device including a pendulum supported in a swingable manner inside a housing and a pendulum driving means for swinging the pendulum. Provide a magnet above the upper part, outside the pendulum, provide another magnet corresponding to the magnet, and when the housing is tilted, the magnet and the other magnet repel, The pendulum device is configured to prevent a portion below the fulcrum of the pendulum from coming into contact with the housing. That is, in this type of pendulum device, when the housing is tilted and the portion below the fulcrum of the pendulum comes into contact with the housing, the driving of the pendulum may be stopped. Such inconvenience can be avoided.

  The invention described in claim 2 of the present application is the pendulum apparatus according to claim 1, wherein the pendulum is provided with a weight at a position above the fulcrum.

  The invention described in claim 3 of the present application is that in claim 1 or 2, the pendulum driving means swings the pendulum by acting on the magnet provided at a position above the fulcrum of the pendulum. This is a pendulum device having a configuration.

  According to the present invention, a more rationally configured pendulum device can be obtained.

  Embodiments of the present invention will be described below in detail with reference to the drawings. The pendulum device 1 of this example shown in FIGS. 1 to 8 is incorporated in a watch housing 10 to decorate the watch. The pendulum device 1 includes a pendulum 100, a plate-like support 200 that supports the pendulum 100 so as to be swingable, and a pendulum drive unit 300 that swings the pendulum. The housing 10 is configured to be mounted with a support 200. The pendulum 100 is swingably supported inside the housing. In addition, the support 200 is provided with a movement 400 for driving the hands of the watch. In addition, 11 and 12 in a figure are the magnets provided in the housing | casing 10, and the boss | hub which supports it. These will be described in detail later.

  The pendulum 100 is supported by a knife edge-shaped shaft portion 210 provided on the support 200 and swings around the shaft portion 210 as a fulcrum. The pendulum driving means 300 swings the pendulum 100 by a magnetic action, and is provided at an important point of the support 200. Specifically, an induced voltage is generated in the detection coil when the magnet 111 provided in the pendulum 100 passes in the vicinity thereof, and when an induced voltage is generated in the detection coil, a current flows in the drive coil, and the drive coil becomes the magnet 111. The pendulum 100 is energized by repelling.

  This pendulum 100 is formed by assembling a first pendulum member 110 supported by a support 200 and a second pendulum member 120 connected to the lower portion of the first pendulum member 110. The first pendulum member 110 and the second pendulum member 120 are made of a synthetic resin-molded member. The first pendulum member 110 is provided with the magnet 111 described above, a hole 112 through which the shaft portion 210 is inserted, and a weight 113 having a predetermined weight. In addition, a curved portion 110 a for avoiding interference with the needle alignment 410 of the movement 400 is provided at a main point of the first pendulum member 110. A swing ball 121 is provided on the second pendulum member 120. The timepiece housing 10 exposes the second pendulum member 120 to the outside through a window, a transparent plate, or the like.

  Further, the pendulum 100 of this example is provided with a magnet 111 and a weight 113 in a portion above the shaft portion 210 serving as a fulcrum. The swing period of the pendulum 100 is delayed according to the weight of the part above the fulcrum. In other words, it has a structure that creates a relaxed and elegant movement.

  Next, a connection structure between the first pendulum member 110 and the second pendulum member 120 will be described. In the case of this example, a hook portion 122 is provided on one of the first pendulum member 110 and the second pendulum member 120, and a locking portion 114 for locking the hook portion 122 is provided on the other of them. In the illustrated pendulum 100, a hook portion 122 is provided on the upper portion of the second pendulum member 120, and a locking portion 114 is provided on the lower portion of the first pendulum member 110. The locking portion 114 is provided with a taper that reduces the diameter corresponding to the width of the hook portion 122 from top to bottom. The hook portion 122 is guided by the taper and locked at a predetermined position. It has a configuration. It is also possible to provide the hook part 122 at the lower part of the first pendulum member 110 and the locking part 114 at the upper part of the second pendulum member 120. The second pendulum member 120 is suspended from the first pendulum member 110 by locking the hook portion 122 to the locking portion 114.

  Further, in this example, the first pendulum member 110 is provided with a pair of projecting pieces 115 that sandwich the second pendulum member 120. The pair of protruding pieces 115 sandwich the upper vicinity of the second pendulum member 120 in the swinging direction of the pendulum 100. The second pendulum member 120 locks the hook portion 122 to the locking portion 114 and press-fits between the pair of projecting pieces 115. The pair of projecting pieces 115 are parts integrally formed in the mold forming of the first pendulum member 110, and are elastically deformed to be pressed against the second pendulum member.

  In this manner, the pair of projecting pieces 115 are elastically deformed and pressed against the second pendulum member 120, so that the position of the second pendulum member 120 relative to the first pendulum member 110 does not move in the swinging direction of the pendulum 100. . Therefore, the swing of the pendulum 100 is reliably stabilized.

  Next, the relationship between the pendulum 100 and the support body 200 in this example will be described. In the case of this example, the pendulum 100 is provided with a weight in a portion above the shaft portion 210 that is the fulcrum, and the swing range of the portion above the fulcrum of the pendulum 100 is shown in FIG. As shown, the structure is included in the outline of the support 200 as viewed from the front of the support 200. A broken line in FIG. 6 indicates an outline of the support 200. A two-dot chain line in FIG. 6 indicates the position of the pendulum 100 when the swing width is maximum. According to such a configuration, there is an advantage that versatility and assemblability as a unit of the pendulum device 1 are improved. The concept will be described below.

  When the pendulum device 1 is incorporated in the housing 10, it is necessary to secure a swinging space for the pendulum 100 in the housing 10. In this respect, according to the configuration in which the swing range of the part above the fulcrum of the pendulum 100 is included in the outline of the support 200 when viewed from the front of the support 200, the design of the timepiece and the pendulum device with respect to the housing 10 are included. 1 is advantageous in that the support 200 serves as a standard for securing a rocking space in such a part.

  If the magnet 111 and the weight 113 are provided above the fulcrum of the pendulum 100, the swinging period of the pendulum 100 becomes slow, but the pendulum 100 is enlarged. In the design and assembly stages, the work must be performed while taking into consideration the rocking space of the part, which causes the work to be complicated. On the other hand, according to this example, the installation position of the support body 200 is determined, and a required swinging space is secured in accordance with the installation position. Therefore, the operation is relatively easy. Specifically, the casing 10 contains components such as a circuit board, a battery box, and a standard time radio wave receiving antenna. A swing space above the fulcrum of the pendulum 100 can be secured by setting a predetermined interval between these components and the support 200. That is, since it is not necessary to perform the work while checking the swing range of the pendulum 100, the work efficiency can be reliably improved. That is, the pendulum device 1 of this example has excellent versatility as a unit used for various watches.

  Next, the weight 113 and the weight mounting portion 116 for mounting the weight 113 will be described. The pendulum 100 of this example is provided with a weight mounting portion 116 at a position above the shaft portion 210 that is a fulcrum. The weight mounting portion 116 is provided at a main point of the first pendulum member 110.

  Further, in this pendulum device 1, the swing period of the pendulum 100 can be changed by changing the weight of the weight 113 attached to the weight attaching portion 116. It should be noted that the weight 113 is provided symmetrically with respect to a predetermined position of the weight mounting portion 116, and the position of the center of gravity of the entire pendulum 100 is shifted even if the weight of the weight 113 mounted on the weight mounting portion 116 is different. It is configured so that there is nothing. Specifically, the weight 113 has a cylindrical shape with the bottom surface directed in the front-rear direction, and the weight mounting portion 116 has a cylindrical inner peripheral surface on which the weight is fitted. The weight of the weight 113 attached to the weight attaching portion 116 is adjusted by changing the dimension of the weight 113 in the front-rear direction. The swinging period of the pendulum 100 can be set in a range of approximately 2.0 to 1.2 seconds by changing the weight of the weight 113 attached to the weight attaching portion 116.

  In the case of this example, the center of gravity of the entire pendulum 100 including the magnet 111 and the weight 113 is set to be positioned at the center in the front-rear direction of the shaft portion 210. This is to stabilize the swing of the pendulum 100. If the center of gravity of the entire pendulum 100 moves due to the weight of the weight 113 to be mounted, the swing of the pendulum 100 may be unstable. According to this example, such inconvenience can be avoided. .

  Next, the magnet 111 of the pendulum 100 and the magnet 11 provided in the housing 10 in this example will be described. In the case of this example, the casing 10 is provided with another magnet 11 corresponding to the magnet 111 provided at a position above the fulcrum of the pendulum 100. When the housing 10 is slightly tilted, the magnet 111 on the pendulum 100 side and the magnet 11 on the housing 10 side are repelled, so that a portion below the fulcrum of the pendulum 100 contacts the housing 10. It is the structure which prevents.

  The magnet 11 is fixed to a cylindrical boss-shaped magnet support portion 12 provided at a predetermined site inside the housing 10 by press fitting or screwing. The housing 10 is formed by molding a resin, and the magnet support portion 12 is integrally formed in the molding. The magnet 11 and the magnet support portion 12 on the housing 10 side are respectively provided on both sides in the swing direction of the pendulum 100. More specifically, the pendulum 100 is provided symmetrically around the fulcrum.

  For example, when a portion below the fulcrum of the pendulum 100 moves to the right, the magnet 111 on the pendulum 100 side moves toward the left magnet 11 on the housing 10 side. When a portion below the fulcrum of the pendulum 100 moves to the left, the magnet 111 on the pendulum 100 side moves toward the right magnet 11 on the housing 10 side. When the housing 10 is tilted, the magnet 111 on the pendulum 100 side approaches the magnet 11 on the one side on the housing 10 side than during normal swinging, so that they are repelled. When the housing 10 is tilted to the left, the magnet 111 on the pendulum 100 side and the right magnet 11 on the housing 10 side repel, and when the housing 10 is tilted to the right, the magnet 111 and housing on the pendulum 100 side are repelled. The left magnet on the body 10 side repels.

  That is, when the pendulum 100 swings inside the housing 10, the installation location of the housing 10 is slightly inclined, the housing 10 is lifted, or the housing 10 is shaken by some impact. When there is no magnet 11 on the housing 10 side, there may be a case where the swing ball 121 or the like comes into contact with the inside of the housing 10 (see FIG. 8) and the swing of the pendulum 100 stops. In this regard, according to the configuration of the present example, the magnet 111 on the pendulum 100 side and the magnet 11 on the housing 10 side repel each other, so that an appropriate braking effect and biasing effect on the pendulum 100 can be obtained. Can be avoided very reasonably (see FIG. 7). 7 and 8 show a state in which the housing 10 is slightly inclined in the left (arrow A) direction.

  In particular, the pendulum 100 of this example is provided with a weight 113 above the fulcrum. In other words, the weight balance between the upper and lower portions around the fulcrum is ensured to some extent, and the possibility of rocking stop due to contact is significant. Therefore, it can be said that the configuration of this example in which the magnet 11 is provided on the housing 10 side is very effective in such a pendulum 100.

  Further, the pendulum driving means 300 of the present example swings the pendulum 100 by acting on the magnet 111 provided at a position above the fulcrum of the pendulum 100, and the magnet 11 on the housing 10 side. Corresponds to the magnet 111. That is, the magnet of the pendulum driving means 300 and the magnet corresponding to the magnet 11 on the housing 10 side can be provided separately, but by sharing these magnets as in this example. In this case, a reduction in the number of parts can be achieved.

  As described above, the pendulum device of this example is reasonably configured as a unit housed in a housing, and can be suitably used as a device for decorating a watch. In addition, it is needless to say that the configuration of each part in this example can be appropriately changed in design within the technical scope described in the claims, and is not limited to the illustrated example. For example, the other magnet corresponding to the magnet provided at the position above the fulcrum of the pendulum is provided in the housing in this example, or may be configured to be provided on the support.

The pendulum device of the present invention can be suitably used as a decoration for a table clock or a wall clock.

It is a see-through | perspective front view which concerns on the Example of this invention and shows a pendulum apparatus. It is a see-through | perspective side view which concerns on the Example of this invention and shows a pendulum and a support body. It is a see-through | perspective front view which concerns on the Example of this invention and shows a pendulum. It is a see-through | perspective side view which concerns on the Example of this invention and shows a pendulum. (A) is a see-through | perspective front view which shows the principal part of a pendulum, (b) is a see-through | perspective side view which shows the principal part of a pendulum. It is explanatory drawing which concerns on the Example of this invention and shows rocking | fluctuation of a pendulum. It is explanatory drawing which concerns on the Example of this invention and shows rocking | fluctuation of a pendulum in the state in which the housing | casing inclined. It is explanatory drawing which shows the rocking | fluctuation of a pendulum in the state which concerns on the Example of this invention and the housing | casing inclined (when a magnet is not provided in a housing | casing).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pendulum apparatus 10 Housing | casing 11 Magnet 12 Magnet support part 100 Pendulum 110 1st pendulum member 110a Bending part 111 Magnet 112 Hole part 113 Weight 114 Locking part 115 Projection piece 116 Weight mounting part 120 2nd pendulum member 121 Pendulum ball 122 Hook Part 200 Support body 210 Shaft part 300 Pendulum drive means 400 Movement 410 Needle alignment

Claims (3)

In a pendulum device comprising a pendulum supported in a swingable manner inside a housing, and a pendulum driving means for swinging the pendulum,
The pendulum is provided with a magnet above its fulcrum,
Provided outside the pendulum is another magnet corresponding to the magnet,
When the casing is tilted, the magnet and the other magnet are repelled to prevent a portion below the fulcrum of the pendulum from coming into contact with the casing. Pendulum device.   The pendulum device according to claim 1, wherein the pendulum is provided with a weight at a position above the fulcrum.   The pendulum device according to claim 1 or 2, wherein the pendulum driving means swings the pendulum by acting on the magnet provided at a position above a fulcrum of the pendulum.

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