JPH04134095U - Swing width control structure of electromagnetically driven pendulum - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a swing width control structure that reduces the large swing width of an electromagnetic drive pendulum without changing the electromagnetic drive device. [Structure] This is a swing width control structure for an electromagnetically driven pendulum in which a swinging rod with a pendulum connected to the lower end is swingably supported on the upper surface of a mechanism receiving plate, and in order to suppress the swinging range of the swinging rod within a certain angle, A stopper is attached to the swinging rod so that one of its ends comes into contact with the mechanical support plate while receiving a buffering force at the desired swing limit of the swinging rod.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a swing width control structure for an electromagnetically driven pendulum.

0002

[Conventional technology]

An electromagnetically driven pendulum has a structure in which a pendulum is connected to the lower end of a swinging rod. and above The upper part of the swinging rod is attached to the top surface of the movement case (hereinafter referred to as the "mechanism receiving plate"). The swinging rod is supported by a magnet fixed to the back of the swinging rod and the front of the mechanism receiving plate. Oscillating motion is achieved through electromagnetic relationships with coils placed on the surface.

0003

[Problem that the idea aims to solve]

By the way, the electromagnetic drive pendulum described above has a drive device consisting of a magnetic swinging rod and a coil. It is configured to keep the swing width of the pendulum (the amount of movement of the bottom end of the pendulum) constant. However, depending on the length of the pendulum, the swing width of the pendulum changes. For this purpose, the amplitude It is not possible to store a large pendulum in a narrow watch case, and even if it were possible, There is not enough space between the left and right exterior walls and the pendulum, so if the clock tilts even slightly to the left or right, There is a problem where the pendulum hits the exterior and interior walls.

0004 Therefore, in the past, the resistance of the drive coil was generally changed to achieve a predetermined swing width (to avoid the above problems). We have secured a swing width to prevent this from occurring. However, changing the resistance of the above coil The means to adjust the swing width is by electromagnetic coupling between the magnet on the swing rod side and the coil on the mechanism receiving plate side. The force becomes smaller and the pendulum stops when the clock tilts slightly.

[0005] In view of the above-mentioned circumstances, the present invention has been developed to reduce the swing width without changing the resistance of the coil. The purpose of this invention was to provide a swing width control structure for an electromagnetically driven pendulum.

[0006]

[Means to solve the problem]

In other words, the present invention allows a swing rod with a pendulum connected to the lower end to be swingable on the top surface of the mechanism receiving plate. A swing width control structure of a supported electromagnetically driven pendulum, which controls the swing range of the swinging rod within a certain angle. In order to hold the swing rod at the desired swing limit, one of its ends is loosely attached to the mechanism receiving plate. A stopper that comes into contact with the rod while receiving an impact is attached to the swinging rod.

[0007]

[Effect]

In the present invention, the swinging range of the swing rod is limited by the stopper. Therefore, for example, if the pendulum is long (the swing width becomes large), the above swing range should be All you need to do is install a stopper that makes it smaller. Adjust the swing width of the various pendulums (the amount of movement of the lowest end of the pendulum) to the desired value (as seen on the clock exterior). suitable). In other words, without changing the resistance of the coil, It becomes possible to use various pendulums.

[0008]

【Example】

The following description will be made based on the attached drawings showing the embodiments. In the drawings, 1 is a mechanism receiving plate. , 2 is a swinging rod that is swingably arranged on the front side of the mechanism receiving plate 1, and the swinging rod 2 is A pendulum 3 is connected to the lower end of. More specifically, it is supported on the upper surface of the mechanism receiving plate 1. A bearing protrusion 4 is formed, and on the other hand, a mounting seat 6 having a recess 5 is fixed to the upper part of the swinging rod 2. has been done. In other words, the recess 5 of the swing rod 2 is engaged with and placed on the support protrusion 4 of the mechanism receiving plate 1. As a result, the swinging rod 2 is supported so as to be able to swing relative to the mechanism support plate 1. The coil 7 is placed on the front of the lower part of the mechanism receiving plate 1, while the magnetic pole is placed on the back of the swinging rod 2. A stone 8 is arranged, and the swinging rod 2, in other words, the pendulum 3, is configured to be electromagnetically driven.

[0009] In the embodiment shown in the accompanying drawings, a swinging width control structure 9 is arranged on the upper part of the swinging rod 2. vinegar That is, the back surface of the mounting seat 6 is raised upward to form the stopper mounting plate 10. At the same time, a shaft 11 is fixed to the back of the stopper mounting plate 10, and a circular shape is attached to this shaft 11. The center part of the arc-shaped stopper 12 is loosely fitted, and one end is fixed to the back side of the stopper 12. By fixing the other end of the spring 13, a biasing force is accumulated when the stopper 12 is displaced. There is a structure. Further, both ends 12a and 12b of the stopper are connected to the mechanism receiving plate 1. It has a positional relationship facing the top surface. Furthermore, both ends 12a and 12b of the stopper At the swing limit of the pendulum 3, either of the ends 12a, 12b is connected to the mechanism receiving plate. It is located at a position where it comes into contact with the top surface of 1.

0010 According to the above configuration, even if the electromagnetic coupling force between the coil 7 and the magnet 8 is strong, Regardless of the length of the pendulum 3, the swing angle (in other words, the swing width) of the pendulum 3 is determined by the stopper. It is regulated.

[0011] That is, as shown in FIG. 4, one end 12a or 12b of the stopper 12 is the mechanism receiving plate. When the swinging rod 2 comes into contact with the top surface of the rod 1, the swinging of the swinging rod 2 is stopped via the spring 13. As a result, the swing width of the pendulum 3 is kept small. Also, as shown in Figure 5, for example Even if the mechanism receiving plate 1 is tilted to the left (the watch body is tilted to the left), the swing range is limited to the stopper 1. The tilt condition of the watch body is determined by both ends 12a and 12b of 2. is not affected at all. Then, the buffering force of the spring 13 acts on the stopper 12. Because of this, the movement of the pendulum 3 is relatively slow, and both ends of the stopper 12 When the part hits the top surface of the mechanism receiving plate 1, the contact sound sounds like a ticking sound. .

0012 In the above embodiment, the mounting position of the stopper 12 is set at the top of the swing rod 2. However, if it is the fulcrum of the swinging rod 2 (the position of the depression 5), there is no problem; for example, if the swinging rod 2 is It can also be provided in the center of the In addition, the structure that provides a buffering force to the stopper 12 is For example, as shown in FIG. 6, the stopper 12 may be made of a spring material. It is also possible to consider other means such as configuring.

[0013]

[Effect of the idea]

As explained above, according to the present invention, by providing the swinging rod with a stopper, The swing width can be controlled without weakening the electromagnetic coupling force between the magnet and the coil. Therefore, various pendulums can be connected and used, making product development easier. The force is applied to the pendulum, which makes the movement of the pendulum more relaxed, and the stopper There are many advantages, such as the contact sound being a ticking sound.

[Brief explanation of drawings]

[Figure 1] Front view of one embodiment

[Figure 2] Same side view

[Figure 3] Enlarged side view of the main parts

[Figure 4] Front view showing the same operating state

[Figure 5] Front view with the mechanism receiving plate tilted

[Fig. 6] Main part front view showing another embodiment

[Explanation of symbols]

1 Mechanism receiving plate 2 Swinging rod 3 Pendulum 12 Stopper 12a, 12b both ends

Claims (1)

[Scope of utility model registration request] [Claim 1] A swing width control structure for an electromagnetically driven pendulum in which a swinging rod with a pendulum connected to the lower end is swingably supported on the upper surface of a mechanism support plate, the swinging range of the swinging rod being held within a certain angle. A swing width control structure for an electromagnetically driven pendulum, characterized in that a stopper is attached to the swinging rod, one of the ends of which comes into contact with a mechanism receiving plate while receiving a buffering force at a desired swinging limit of the swinging rod.