JP3049072B2 - Rotating electrical parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electronic device such as a video tape recorder (hereinafter, referred to as a VTR) which detects a rotation state of a rotator by a rotation detection device and detects the rotation state. The present invention relates to a rotary electric component for controlling the operation of the electronic device.

[Prior art] Conventionally, for example, a rotary electric component used for operation control of a VTR has a cam surface corresponding to the rotation angle of a rotary dial plate as disclosed in Japanese Patent Application Laid-Open No. 61-161624. Formed on a rotary dial plate, press the cam roller against the cam surface,
In some cases, a torque change according to the shape of the cam surface is obtained to give a clicking feeling to the rotation operation.

Further, as disclosed in Japanese Utility Model Laid-Open No. 60-94739, a projection urged by a click spring is engaged with a concave portion formed on a rotary plate as a device for giving a click feeling to a rotary operation member. , Some give a click feeling.

Furthermore, as shown in Japanese Utility Model Laid-Open No. 60-148626 and FIG. 8, a ring magnet 1 is formed by magnetizing a donut-shaped magnetic body at a constant pitch to the NS pole as shown in FIG. Then, a magnetic comb tooth ring 2 having comb teeth having the same pitch as the NS poles is coaxially attached thereto so as to be rotatable about a rotation shaft 3, and the ring magnet 1 is fixed. In some cases, a click feeling is given to the rotation of the comb tooth ring 2 by rotating the comb ring. Some rotary electric components having this structure are used as operation dials for controlling operation of a VTR or the like.

[Problems to be Solved by the Invention] Among the rotary electric parts of the prior art described above, those that mechanically give a click feeling by a spring require a large number of parts, require assembling man-hours, and have difficulty adjusting the click feeling. There is a disadvantage that durability is poor.

In addition, the one shown in FIG. 8 is difficult to obtain a strong magnet because the NS poles are formed in a ring shape, and the magnet for obtaining a good click feeling needs to be enlarged. Contrary to recent demands for smaller and lighter electronic devices.
In addition, in this case, since the ring magnet 1 is fixed to the chassis, the rotating parts must be disposed directly above the rotating magnets. There is a disadvantage that it is easy.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and has as its object to provide a rotary electric component which is small in size, has a good click feeling with a simple structure, and has a precise rotation operation. And

Means for Solving the Problems The present invention relates to a magnetic metal plate having at least one independent magnet having a pair of NS poles around a rotation axis and an opening such as a through hole formed at a predetermined pitch. Are provided facing each other, one of the magnet or the magnetic plate is fixed to the rotating shaft, and the other is rotatably provided.

Further, according to the present invention, a plurality of rotating bodies are rotatably mounted on one rotating shaft in a superposed state, and respective bearing portions of the plurality of rotating bodies are independently formed, and the plurality of rotating bodies are mutually A spacer fixed to the rotating shaft is interposed in a bearing part of the facing part, and at least one independent magnet having a pair of NS poles is attached to one of the rotating body or the spacer, and at least one other magnet is provided. This is a rotary electric component having a portion formed of a magnetic metal plate having openings such as through holes formed at a predetermined pitch.

Further, the rotator automatically returns to the center position regardless of whether the rotator is rotated left or right by the coil spring, and stops at the center position by clicking with a concave portion and a click spring.

[Operation] The rotary electric component of the present invention can provide a small and powerful click feeling by an independent magnet having a pair of NS poles and a magnetic plate having a magnetic portion having a predetermined pitch. is there.

Further, the rotary electric component according to the present invention is configured such that a plurality of rotating bodies mounted in a riding state can rotate completely independently without rotating together.

Furthermore, the rotary electric component according to the present invention has a plurality of rotating bodies mounted in a superimposed state that rotates completely independently without rotating together with each other, and has a good click feeling with a small and simple configuration. It rotates.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The rotary electric component of this embodiment is a so-called jog shuttle used for an operation unit for controlling the operation of a VTR.The inner rotary body is called a jog, and the outer rotary body is called a shuttle. Shake to play VTR,
It controls fast forward and rewind. In this embodiment, a chassis 10 made of synthetic resin such as PPS is used.
And a substrate 11 such as a paper epoxy resin laminate on which a conductor pattern is formed concentrically is placed on the bottom surface. In the center of the chassis 10, a rotation shaft 12 is integrally provided with the chassis 10 so as to protrude therefrom. Further, a positioning projection 13 and a spacer receiver 14 are provided integrally with the chassis 10 so as to protrude at a predetermined position. Further, the substrate 11 has a through hole 15 into which the rotation shaft 12, the positioning protrusion 13, and the spacer receiver 14 are fitted, respectively.
The substrate 11 is formed at the corresponding position,
It is positioned and fixed on the ten positioning protrusions 13.
A plurality of terminals 16 are caulked at one end of the substrate 11 and extend in a direction perpendicular to the substrate 11.

Above the substrate 11, an inner rotating body 18 made of a synthetic resin having a slider 17 and fitted to the rotating shaft 12, and having a slider 19, sliding on the outer surface of the spacer receiver 14 and rotating. An outer rotating body 20 made of synthetic resin is attached. Each of the sliders 17, 19 slides on the conductor pattern on the surface of the substrate 11, and the conductor pattern is partially provided with an insulating film. The state is different, and this is output from the terminal 16.

The slider 17 is attached to the lower surface of the flange portion 21 of the inner rotating body 18, and a metal plate 23 to which a magnet 22 is adhered is fixed to the upper surface thereof, as shown in FIGS. ing. This fixing is performed by inserting a projection 25 formed on the flange portion 21 into a through hole 24 formed on the metal plate 23, and then melting and crushing the protrusion. The magnet 22 is a rare earth magnet having a pair of NS poles, and is a strong magnet having a magnet density of 2300 gauss.
As shown in FIG. 6, three magnets 22 are arranged on a metal plate 23 in line symmetry, and two magnets at symmetrical positions are bonded at intervals of 72 degrees.

Above the magnet 22, a spacer 26 made of a magnetic metal plate is placed on the tip of the spacer receiver 14. Spacer 26
As shown in FIG. 5, a notch 27 is formed in the peripheral portion, and engages with a convex portion 28 provided at the tip of the spacer receiver 14 to prevent the spacer 26 from rotating. Further, through holes 29 are formed in the spacer 26 at a pitch of 36 degrees, and the opening angle of the through holes 29 is 18 degrees. Also, the spacer
The lower surface of the 26 is in contact with the thrust receiving portion 30 of the inner rotating body 18. The tip of the thrust receiving portion 30 is located above the surface of the magnet 22 so as to prevent the magnet 22 from sticking to the spacer 26 and coming into contact therewith, and is provided symmetrically around the rotating shaft 12.

The upper surface of the spacer 26 is in contact with the thrust receiving portion 31 of the outer rotating body 20, and the outer rotating body 20 is in sliding contact with the outer surface of the spacer receiver 14, and the flange portion of the outer rotating body 20.
The slider 19 is attached to the lower surface of the 32, and a coil spring 33 is provided on the upper surface for returning to the center position when rotating. One end of the coil spring 33 is fixed to the chassis 10, and the other end is fixed to the outer rotating body 20. A concave portion 34 is formed on the side surface of the flange portion 32 of the outer rotating body 20,
The click spring 35 is designed to engage at the center position of 20.

A cover 37 made of a metal plate is attached above the flange portion 32, and the cover 37 is fixed to the chassis 10 by claws 38. In addition, a thrust receiving portion 36 that is in contact with the back surface of the cover 37 is also formed on the upper surface of the flange portion 32, so that the outer rotating body 20 does not come off in the axial direction.

The rotary electric component of this embodiment has a configuration in which the respective sliders 17 and 19 are in sliding contact with the conductor pattern formed on the substrate 11 and the ON and OFF states of the respective terminals 16 differ depending on the rotation angle. The operation of the VTR is controlled by rotating the outer rotating bodies 18 and 20.

The inner rotating body 18 has a bearing in the thrust direction on the chassis bottom surface around the central axis 12 and the back surface of the spacer 26, and the rotating shaft 12 is a bearing in the radial direction. Also, the outer rotating body 20 covers the surface of the spacer 26 and the cover.
The back surface of 37 is a bearing in the thrust direction, and the outer surface of the spacer bearing 14 is a bearing in the radial direction.

When the inner rotating body 18 is rotated, the magnet 22 tends to be positioned under the magnetic body by avoiding the through hole 29 of the spacer 26 by the magnetic force, and a click feeling is given to the rotation. Accordingly, in this embodiment, since there are ten through holes 29, ten click positions can be obtained in one rotation,
Ten operation modes can be controlled.

Also, the outer rotating body 20 automatically returns to the center position regardless of whether it is rotated left or right by the coil spring 33,
And click spring 35 stops at the center position.

The rotary electric component of this embodiment is composed of a single magnet and a through hole 29.
A click feeling is given to the rotation by using the magnetic plate on which is formed, so that the number of magnets can be small, a strong magnet can be used, and the device can be downsized. . In addition, since the spacer 26 is formed of a magnetic plate and is also used, the size can be further reduced.

Further, two sets of sliders 17 and 19 can be slid on the surface of one substrate 11, and when rotating, the inner and outer rotating bodies 18 and 20 are superposed. Each rotating body rotates independently, and there is no accompanying rotation. In addition, it can be made smaller, lower costs and
There is no backlash of the rotating body or the slider, and stable operation can be performed for a long period of time.

In the rotary electric component of the present invention, the magnet is fixed,
The magnetic plate may be attached to the rotating body, and the number of through holes in the magnetic plate may be an odd number and can be arbitrarily determined. Also, instead of a through hole, a comb-like shape,
A structure in which a strong part and a weak part of magnetism are repeated at a predetermined pitch may be employed.The predetermined pitch is not constant and may be irregular as required, and a hole must be formed. Absent.

[Effect of the Invention] In the rotary electric component of the present invention, a clicking feeling is given to the rotating body by a single magnet and a magnetic metal plate having openings formed at a predetermined pitch. The magnet can be arbitrarily selected, and the number of click feelings can be arbitrarily set even or odd. There is no vibration at the time of rotation of the rotating body, and the feel and durability are good.

In addition, since the facing portions of the plurality of superimposed rotating bodies are independently supported by the spacers, the rotating bodies can be completely independently operated without rotating together.

[Brief description of the drawings]

1 is a longitudinal sectional view of a rotary electric component according to one embodiment of the present invention, FIG. 2 is a partially cutaway front view of the rotary electric component of this embodiment, and FIG. 3 is a rotary electric component of this embodiment. FIG. 4 is a bottom view of the rotary electric component of this embodiment, FIG. 5 is a front view showing a spacer of this embodiment, and FIG. 6 is a view of a metal plate on which a magnet of this embodiment is mounted. FIG. 7 is a right side view of FIG. 6, and FIG. 8 is a perspective view showing a conventional technique. 10 ... chassis, 11 ... board, 12 ... rotating shaft, 17, 19 ...
... Slider, 18 ... Inner rotating body, 20 ... Outer rotating body, 22 ...
... magnet, 26 ... spacer, 29 ... through-hole,

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-194423 (JP, A) JP-A-57-180822 (JP, A) JP-A-1-156506 (JP, U) JP-A-60 148626 (JP, U) Jikken 39-11568 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01H 19/20

Claims (3)

(57) [Claims] 1. A rotary electric component having a click member which is provided so as to be rotatable about a rotation axis and provides a click resistance by giving a rotation resistance at a predetermined position when the rotary body is rotated. Around the rotation axis, at least one independent magnet having a pair of NS poles and a magnetic metal plate having openings formed at a predetermined pitch are provided facing each other, and one of the magnet or the magnetic plate is provided. Is fixed to the rotation axis,
A rotary electric component characterized in that the other is rotatably provided. A plurality of rotating bodies are rotatably mounted on one rotating shaft so as to be superposed, and have a click member which gives a rotating resistance at a predetermined position when the rotating bodies rotate to give a click feeling. In this rotary electric component, the bearings of the plurality of rotating bodies are independently formed, and a spacer fixed to the rotating shaft is provided on a bearing portion of the portion where the plurality of rotating bodies face each other. A magnetic body having at least one independent magnet having a pair of NS poles attached to one of the rotating body and the spacer, and at least a part of the other being formed with openings at a predetermined pitch. A rotary electric component formed of a metal plate. 3. The rotary electric component according to claim 1, wherein the rotating body automatically returns to a predetermined position when the rotating body is rotated left or right by a coil spring, and stops at a click.