JPH071766Y2 - Rotary solenoid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a rotary solenoid.

Conventionally, a device that requires a relatively large rotational driving force for control, for example, a rotor, a stator, and an exciting coil as an electromagnetic operation source for a valve, and the rotor is rotated by energizing the exciting coil. A so-called rotary solenoid is used. However, these rotary solenoids are provided with a stopper function means for the rotor in order to regulate or limit the rotational position or angle of the rotor and prevent the rotor from swinging. Specifically, (1) the rotor itself or its interlocking member is stopped by a protruding stopper provided on the stator or the case. (2) Various means such as engaging a protrusion provided on the rotor with a rotation restriction hole provided on the stator or the case side are implemented. However, in any case, the structure is complicated in order to regulate the accurate rotation position or angle, and the position adjustment is troublesome in manufacturing.

The present invention eliminates the drawbacks of the conventional rotary solenoid described above, accurately regulates the rotational position or angle of the rotor, has a simple structure, is robust, is easy to assemble, and is an inexpensive rotary solenoid that does not increase the number of parts. For the purpose of providing.

FIG. 1 is a cross-sectional structure portion of a rotary solenoid showing an embodiment of the present invention. 1 is a rotor, 2 is a stator, 3 is an exciting coil, 4 is a rotating shaft, 5 is a frame, 6 is a side plate, 7 is a bobbin, 7a and 7b are protrusions provided on 7, and 7a is a rotor stopper. , 7b are bobbin stoppers.

FIG. 3 is a structural view of the bobbin 7 of FIG. 1, (a) is a plan structural view thereof, and (b) is a front structural view thereof, and the same reference numerals as in FIG. 1 represent the same parts, respectively. Also, the second
The drawing is a principle structural view of the rotary solenoid of FIG. 1 as viewed from the axial direction, and like reference numerals in FIG. 1 denote like parts. Describing the operation with reference to FIG. 1 and FIG. 2, the energizing of the exciting coil 3 causes an attractive force to act between the rotor 1 and the stator 2, and the rotor 1 rotates about the rotating shaft 4 in the arrow direction. Move. The convex portion 1a of the rotated rotor 1 collides with the rotor stopper 7a, and the rotor 1 stops rotating. Further, the bobbin stopper 7b is fitted into the recess 2b provided along the inner surface of the stator 2 to prevent the bobbin 7 itself from rotating when the rotor 1 collides with the rotor stopper 7a. The number of the convex portions 1a of the rotor 1 can be arbitrarily selected by setting the angle of the rotary stroke. Further, it is preferable to provide the rotor stoppers 7a, which are the protrusions provided on the bobbin 7, by the number corresponding to the protrusions 1a of the rotor 1, but the objective can be achieved by providing at least one. When the energization of the exciting coil is released, a return spring or the like is used to return in the direction opposite to the arrow, although not shown. FIG. 3 clearly shows the structure of the bobbin 7, but the positions, numbers and shapes of 7a and 7b can be changed as necessary. Besides, the present invention is not limited to the embodiments shown in the drawings, and various modifications, additions, conversions, and the like of various parts can be made within the scope of the present invention.

As described above, the present invention can easily add the rotor stopper function by only partially changing the shape of the bobbin 7. In addition, since accurate control of the rotor rotation position or angle can be achieved with a simple structure, the valve can be turned on and off.
It can be used in a wide range of application fields such as control, proportional control, and various drive devices, and has a great industrial effect.

[Brief description of drawings]

FIG. 1 is a sectional structural view showing an embodiment of the present invention, FIG. 2 is a principle structural drawing of FIG. 1, and FIG. 3 is a bobbin structural drawing.
1 is a rotor, 2 is a stator, 3 is an exciting coil, 4 is a rotary shaft, 5 is a frame, 6 is a side plate, 7 is a bobbin, 7a is a rotor stopper, 7b is a bobbin stopper, and 1a is a convex portion of 1. , 2b is 2
It is a concave part.

Claims (2)

[Scope of utility model registration request] 1. A rotary solenoid having at least a rotor, a stator and an exciting coil, wherein the rotor is rotated by energizing the exciting coil. One or more bobbins of the exciting coil. The rotary solenoid is characterized in that a protrusion is provided and the protrusion serves as a rotor stopper. 2. A rotary solenoid according to claim 1, wherein a bobbin stopper is provided around the bobbin to prevent the bobbin from rotating.