JPS647228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a vibration power device used in, for example, a piston pump or a diaphragm pump such as a hand sprayer.

(Prior Art) The applicant of the present invention has proposed a vibration power device with low vibration and low noise in the specification and drawings of Japanese Patent Application No. Sho 53-162030 (Japanese Patent Publication No. Sho 61-60271).

As shown in Fig. 1, this consists of a symmetrical fixed core 1 located at the center, and support parts 2 on both sides of the fixed core 1, which are rotatably supported in the middle, and are opposed to each other. A substantially L-shaped movable body 4 is arranged symmetrically so that the inner end side 3 thereof is substantially orthogonal to the central axis direction of the fixed iron core 1, and the outer end side portions of the movable body 4 on both sides are arranged symmetrically. A movable core 5 formed and slightly inclined outward with respect to the central axis direction of the fixed core 1, an electromagnetic coil 6 that attracts the movable core 5 to the fixed core 1, and opposing inner sides of the movable body 4 on both sides. This is a vibration power device equipped with an output extraction section 8 provided at an end 7.

This vibration power device has a movable body 4 formed in a substantially L-shape, and a movable core 5 at the outer end of the movable body 4 that is slightly inclined outward with respect to the central axis direction of the fixed core 1. Therefore, when the movable body 4 rotates, the component force fa of the inertia force F1 of the movable core ₅ in the direction of the fixed core center axis, and the inertia force of the inner end side part 3 and the output extraction part 8 in the direction of the fixed core center axis. By making F ₂ and F 2 act equally in opposite directions and canceling out these forces fa and F ₂ , there is an effect that the vibration in the direction of the central axis of the fixed core can be suppressed to a small level.

(Problems to be Solved by the Invention) Since the proposed vibration power device extracts the output from the opposing inner ends 7 of the movable body 4, In order to obtain a sufficient stroke, it is necessary to make the length of the inner end side portion 3 of this movable body 4 sufficiently long.
However, when the length is increased like this, there is a drawback that the strength is weakened. In addition, if the plate member of this inner end side 3 is made thicker to supplement its strength, the mass of this inner end side 3 will increase, so the fixed iron core center of this inner end side 3 etc. There is a risk that the balance between the axial force F ₂ and the component force fa of the movable core 5 in the direction of the fixed core center axis will be lost. There were many design difficulties, such as the angle θ had to be large and the overall shape became large.

The present invention aims to improve these points, and provides a low-vibration, low-noise vibration power device that can obtain a sufficient stroke of the output take-off part and solve problems with strength and dimensions. The purpose is to

[Structure of the invention]

(Means for Solving the Problems) The present invention includes a symmetrical fixed core 15, a middle portion rotatably held on both sides of the fixed core 15, and inner end side portions facing each other. A substantially L-shaped movable body 18 is arranged substantially symmetrically so as to be substantially orthogonal to the central axis direction of the fixed core, and the outer end side portions of the movable body 18 on both sides are formed so that the central axis of the fixed core The movable cores 21 and 22 are slightly inclined outward with respect to the direction, and the movable cores 21 and 22 are
an electromagnetic coil 26 that attracts the fixed iron core 15 to the fixed iron core 15; and a coupling portion 28 provided at the opposing inner ends of the movable bodies 18 on both sides to symmetrically interlock the movable bodies 18 on both sides.
and an output extraction section 31 provided at the tip of one of the movable cores 21, 22.

(Operation) In the present invention, the electromagnetic coils 26 on both sides are simultaneously excited and demagnetized, and the movable cores 21 and 22 on both sides are simultaneously attracted and separated from the fixed core 15 repeatedly and continuously.
In addition, in this case, the movable cores 21 and 22 on both sides are connected to the joint part 2.
8, the adsorption forces on both sides of the fixed iron core 15 are added and taken out from one movable iron core 22.

In addition, since the movable cores 21 and 22 are slightly inclined with respect to the central axis direction of the fixed core 15, the component force fa of the inertia force _F1 of the movable cores 21 and 22 in the fixed core central axis direction and the left and right movable Inertial force F ₂ in the direction of the central axis of the fixed core on the mutually opposing inner end sides of the body 18
By canceling out these forces fa and _F2 , it is possible to suppress the vibration in the direction of the central axis of the fixed core to an extremely small level. In addition, the movable bodies 18 are provided almost symmetrically on both the left and right sides, and by simultaneously attracting and separating the movable bodies 18 on the left and right sides, the movable core 2
The left-right component force fb of the inertial force F1 of ₁ and 22 acts almost equally in opposite directions on both the left and right sides and cancels each other out, so that vibrations in this direction can also be suppressed.

(Example) The present invention will be described in detail with reference to an example shown in FIG.

A base 13 is integrally provided at the upper end of the grip 12 of the hand sprayer 11, and a fixed iron core 15 is fixed above the base 13 via a mounting plate 14. This fixed iron core 15 is formed into a shape in which a pair of E-shaped iron cores are placed back to back and fixed symmetrically. Further, both sides of the fixed iron core 15 are formed in an inclined shape so as to expand downward.

Furthermore, L-shaped movable bodies 18 are arranged substantially symmetrically on both sides of the fixed iron core 15. The mutually opposing inner end sides of the left and right movable bodies 18 are connected to the fixed iron core 1 by front and rear L-shaped plate members 19.
5 so as to be substantially orthogonal to the central axis direction of
Furthermore, the outer end side of this movable body 18 is fixed to the front and rear plate members 19, and is an I-shaped movable core 2 that is inclined slightly outward with respect to the central axis direction of the fixed core 15.
1 and 22. Furthermore, approximately U-shaped mounting brackets 16 are fixed to the upper surfaces of both the left and right sides of this fixed core 15, and the right and left The inner corners of the upper ends of the movable iron cores 21 and 22 on both sides are fitted together, and the lower end bent portion 23 of the leaf spring 25 is engaged with the outer surface of the movable iron cores 21 and 22 on both sides, and the above-mentioned both sides are attached. By engaging the upper end bent portion 24 of the leaf spring 25 with the upper inner end of the metal fitting 16, a movable iron core is attached to the corner formed by the outer end protrusion 17 of the mounting metal fitting 16 and the fixed iron core 15. 21,
The upper inner corner of the movable body 22 is pressed against the movable body 18 to rotatably hold the movable body 18.

Furthermore, electromagnetic coils 26 for attracting the movable cores 21 and 22 are wound around the grooves on both sides of the fixed core 15.

Further, the inner ends of the opposing front and rear plate members 19 of the movable body 18 on both sides are bent outward, that is, forward and backward in FIG.
The upper portions of a pair of leaf springs 28, whose lower ends are fixed, are each fixed as a connecting portion for symmetrically interlocking the movable bodies 18 on both sides.

Further, the tip portion 29 of the right movable iron core 22 is formed to be slightly longer than the left movable iron core 21, and the right end of the output extraction portion 31 is brought into contact with the left side surface of this tip portion 29.

A spring receiving portion 32 is located on the left side of the output extraction portion 31.
The spring receiving portion 32 also forms the base portion 1.
3 receives the biasing force of the compression coil spring 34 in the mounting hole 33, the output take-out part 31 is biased to the right, and the right movable core 22 and the left movable core 22 connected thereto via the leaf spring 28 are The movable iron core 21 is energized outward.
Further, the opening degree of the movable iron cores 21 and 22 is adjusted by a screw 37 screwed into the female thread 36 of the right end portion 35 of the mounting plate 14, and by adjusting the opening degree, the movable iron core 2
1 and 22, that is, the discharge pressure of the pump connected to the output extraction section 31 is adjusted.

Also, a plunger 3 is provided at the left end of the output take-out portion 31.
8 is integrally formed, a suction hole 41 is opened in a plunger chamber 39 through which the plunger 38 moves forward and backward, and a compression coil spring 42 is installed in the tip opening of the plunger chamber 39.
A energized check ball valve 43 is provided in this opening, and a nozzle 4 is inserted into the mounting hole of the compression coil spring 42.
Connect 4. Further, a spray liquid storage tank 45 is fixed to the lower surface of the base 13, and the lower end of the suction pipe 46 connected to the lower part of the suction hole 41 is connected to the tank 4.
The opening is made to face the bottom of 5.

Note that 47 is a push button switch for the electromagnetic coil 26.

Next, the operation of this embodiment will be explained.

The electromagnetic coils 26 on both sides are simultaneously excited and demagnetized,
The movable cores 21 and 22 on both sides are fixed at the same time.
Repeatedly and continuously suction and release. In addition, in that case,
The fixed cores 21 and 22 on both sides are reliably symmetrically interlocked by a leaf spring 28 as a coupling part, and the fixed core 1
The adsorption forces on both sides of 5 are added and the right movable iron core 2
2. During excitation adsorption, the plunger 38 pushed by the movable iron core 22 closes the suction hole 41 and applies pressure to the liquid in the plunger chamber 39, and this liquid opens the check ball valve 43 and flows into the nozzle 44. sprayed from. Further, when the plunger 38 retreats due to the restoring force of the pressure coil spring 34 during demagnetization, the inside of the plunger chamber 39 is made negative pressure, and then the suction hole 41 is opened and liquid is supplied from the tank 45.

Furthermore, since the movable cores 21 and 22 are slightly inclined with respect to the central axis direction of the fixed core 15, the component force fa of the inertial force _F1 of the movable cores 21 and 22 in the fixed core central axis direction and the plate member 19 The inertial force F ₂ can be applied equally in the opposite direction, and these forces
By canceling fa and F ₂ , vibration in the direction of the central axis of the fixed core can be suppressed to an extremely low level. In addition, since the movable bodies 18 are provided almost symmetrically on both the left and right sides so that the left and right movable bodies 18 are simultaneously attracted and separated, the movable iron core 2
The left-right component force fb of the inertial force F1 of ₁ and 22 acts almost equally in opposite directions on both the left and right sides and cancels each other out, making it possible to suppress vibrations in this direction as well.

In the above embodiment, the pumping action is performed by the plunger 38, but the pumping action may be performed using a diaphragm disc instead of the plunger 38.

Furthermore, the above-mentioned plunger type or diaphragm type pumps can be used not only for liquids but also as air pumps.

〔Effect of the invention〕

According to the present invention, a coupling part for symmetrically interlocking the movable bodies on both sides is provided at the opposing inner ends of the movable bodies on both sides, and an output extraction part is provided at the tip of either one of the movable iron cores on both sides. The adsorption force of the movable iron core can be added to strongly act on the output extraction part, and the opposing inner end sides of the movable bodies on both sides are not made into output extraction parts, so the length can be reduced. As a result, the design of this inner end side part is advantageous in terms of strength, and the inclination angle of the movable core with respect to the central axis direction of the fixed core can be made large without necessarily increasing the overall size. Therefore, it is possible to obtain a sufficient stroke at the output extraction portion while solving problems regarding strength and dimensions. In addition, approximately L-shaped movable bodies are arranged almost symmetrically on both sides of the symmetrical fixed iron core, and the intermediate portions thereof are rotatably held, and the movable bodies forming the outer end sides of the movable bodies on both sides are arranged almost symmetrically. Since the iron core is slightly inclined outward with respect to the direction of the fixed core center axis, the device can be made smaller, and the components of the inertial force of the left and right movable bodies in the direction of the fixed core center axis and the direction orthogonal thereto are effectively reduced. Therefore, when such a vibrating power device is used for hand spraying, for example, it is possible to prevent harmful effects caused by vibration, fatigue, and in the worst case, white wax. In addition, when used in an air pump for a fish tank, it can prevent harmful effects caused by vibration and noise.

[Brief explanation of drawings]

FIG. 1 is a plan view of a conventional vibration power device, and FIG. 2 is a sectional view showing an embodiment of the vibration power device of the present invention. 15... Fixed iron core, 18... Movable body, 21, 22...
Movable iron core, 26... Electromagnetic coil, 28... Leaf spring as a coupling part, 31... Output extraction part.

Claims (1)

[Claims] 1 A symmetrical fixed core, with the middle part rotatably held on both sides of this fixed core, and the inner end side parts facing each other being almost symmetrical so that they are almost orthogonal to the central axis direction of the fixed core. a movable body arranged in a substantially L-shape, a movable core forming the outer end side of the movable body on both sides and slightly inclined outward with respect to the central axis direction of the fixed core; An electromagnetic coil that attracts the iron core to the fixed iron core, a coupling part that is provided at the opposing inner ends of the movable bodies on both sides and causes the movable bodies on both sides to symmetrically interlock, and a coupling part that is provided at the tip of one of the movable iron cores. A vibration power device characterized by comprising an output extraction section.