JPH0440775Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is based on a vibration device that utilizes electromagnetic force, which the present applicant had already proposed in Utility Application No. 58-78810. The purpose of the present invention is to improve the connecting structure of the vibrating device to the elastic means, in particular, to prevent the vibrating body from swinging out during vibration, and to always ensure a well-balanced and stable vibration function. be.

The details of the embodiment will be described below with reference to the drawings.

A case component 1 made of iron and a cover member 2 made of aluminum or resin are provided around the openings of both, and a flat circular case 3 is constructed by butt-joining the flanges. A disk-shaped permanent magnet 4 and a flat donut-shaped excitation coil formed by winding a coil 6 around an iron-based winding frame 5 are incorporated, and one of the permanent magnet 4 and the excitation coil, that is, this example Now, the permanent magnet 4 is fixed to the case 3, and the other, that is, the excitation coil, is connected to the spring plate 7 to form a vibration acting body A.
is opposed to the fixed permanent magnet 4 with a required vibration permissible space 8 interposed therebetween, and a lead wire 9 is connected to the vibration effecting body A, that is, the excitation coil.

The above structure has already been filed by the applicant in 1983.
This is a basic vibration device proposed as No. 78810, and this device can be attached to any structure such as a bed, a chair, a car seat, or a karaoke stage (not shown), and the lead wire 9 is connected to the vibration effecting body A. The excitation coil, that is, the vibration effecting body A and the permanent magnet 4, is made by flowing a variable current such as a positive wave, or power in the bass band of audio, through the
A magnetic attraction and repulsion action is generated between the bed and the case, which causes the vibration effecting body A to vibrate due to the elasticity of the spring plate 7, and the vibration is transmitted to the entire case 3, and the necessary parts of the bed or chair that come into contact with the case. It vibrates and stimulates the body.

By the way, the connection structure of the vibration acting body A to the spring plate 7 proposed by the applicant is to fix the periphery of the spring plate 7 to the case and attach the vibration acting body A to the floating part in the center of the spring. However, as a result of experiments, a problem arose in that the resonance of the vibration effecting body A was not stable.

Therefore, in order to eliminate this inconvenience, the present invention has been improved as follows.

That is, a boss shaft portion 10 is provided in the center of the case 3, and the center of the spring plate 7 is fixed to the boss shaft portion 10 so as to extend largely outward from the shaft portion 10.
The outer part of the vibration effecting body A is attached to the surface of the above-mentioned overhanging spring plate portion so that the effecting body A is concentric with the above-mentioned spring plate 7.

Reference numeral 11 indicates an elasticity imparting window hole provided in the spring plate, and reference numeral 12 indicates a mounting portion for the spring plate.

As described above, according to the present invention, the vibration of the vibration effecting body A is of course performed by the bending and restoring elasticity of the spring plate 7. In particular, according to the present invention, the vibration of the vibration effecting body A is performed by the bending and restoring elasticity of the spring plate 7. The center is supported by the boss shaft part 10,
In other words, it is supported at one point.Since the outer part of the vibration effecting body A is attached concentrically to the spring plate part that extends outward from the boss shaft, the vibration effecting body A is prevented from oscillating on one side when it vibrates. It has the important feature of being able to always measure well-balanced and stable vibrations. In particular, this type of vibration device uses an excitation coil or a heavy member such as a permanent magnet as the vibration acting body A, and has an excellent practical effect as a connection structure for the vibration acting body to the spring means. It is something that you have.

In this embodiment, a felt 13 is stretched over the surface of the magnet 4, that is, the surface facing the vibration acting body A, so that the vibration acting body A is not attracted to the permanent magnet 4 when the current is off. . Also, the vibration effecting body A
Several ventilation holes 14 are arranged in a circular direction on the surface of the case 3 facing the coil to release heat generated in the coil, and the ventilation holes 14 are equipped with a thick flexible elastic member 15 such as a sponge having a filter function. The elastic member 15 is tensioned and closed, and the elastic member 15 faces the vibration applying body A so as to be able to freely collide with the vibration applying body A, so as to reduce the impact when the vibration applying body A collides with the elastic member 15. Further, the winding frame 5 of the coil 6 is provided with a magnetic flux guide wall 5' so as to guide the magnetic flux from the coil 6 well to the center of the permanent magnet 4.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view, and FIG. 2 is a partially cutaway plan view of the same. 3... Case, 4... Permanent magnet, 5, 6... Excitation coil, 7... Spring means, A... Vibration effecting body,
8... Vibration permissible space.

Claims (1)

[Scope of utility model registration request] A permanent magnet and an excitation coil that acts magnetically on the magnet are installed in the case, one of which is fixed to the case, and the other is connected to the case via a spring means so as to be able to vibrate freely, and this vibration A vibrating device in which an effecting body is opposed to the fixed permanent magnet or excitation coil through a required vibration permissible space, wherein the connecting structure of the vibration acting body to the spring means includes:
The center of a circular spring plate that largely protrudes outward from the shaft is fixed to a boss shaft provided in the case, and the outer part of the vibration effecting body is attached to the protruding spring plate. A vibrating device characterized by being installed concentrically with a spring plate.