JPS62273704A - Oscillating rotary actuator with side holder - Google Patents

Abstract

PURPOSE:To obtain an actuator which can be easily positioned and assembled scarcely with an adhesive in a rigid assembling without crack of a permanent magnet by providing a side holder for surrounding a yoke, a side yoke and the magnet to determine the positional relationship of them. CONSTITUTION:An actuator has a substantially U-shaped yoke 1 for forming a magnetic circuit, a bobbin 2 and a side yoke 3 of substantially L-shaped section, etc. A flat platelike permanent magnet 6 is interposed between the yoke 3 and the yoke 1 to apply a magnetic flux of predetermined direction and quantity to a magnetic circuit having the yokes 1, 3 and a lever 4. Here, a side holder 7 is used to simply and accurately mount the magnet 6 and the yoke 3 in the yoke 1. The holder 7 has a wide back plate 24 and holding plates 25, 26 formed at both sides of the plate 24 for holding parts of the yoke 1, magnet 6 and yoke 3. A vertical side 28 is disposed inside under the plates 25, 26, the lower end of the side 28 is contacted with the bottom 51 of the bobbin 2 to position the holder 7 with respect to the bobbin 2.

Description

Detailed Description of the Invention a. Detailed Description of the Invention Examples Technical Field The present invention relates to a swing type actuator with a side holder.

The swinging actuator, as we call it, consists of a magnetic yoke, a coil for magnetizing the yoke, a permanent magnet, and a swinging lever.By switching the direction of magnetization of the yoke, the lever can be moved. It swings at high speed.

The most commonly used electromagnetic device that combines a yoke, coil, etc. is a solenoid.

A solenoid has a coil placed in a box-shaped space made of a magnetic yoke, and a plunger inserted into the hollow shaft of the coil so that it can move forward and backward. By energizing the coil, the plunger is attracted, and by de-energizing the coil, the plunger is returned by spring force.

There are also self-retaining solenoids that use permanent magnets. There are also bistable solenoids that use permanent magnets.

In any case, the plunger of the solenoid moves back and forth in the axial direction. The axis of the coil and the motion of the plunger are parallel.

In contrast, the swing-type actuator that is the subject of improvement in the present invention swings the lever in a direction perpendicular to the axis of the coil.

B) Prior art Japanese Utility Model Application Publication No. 57-66506 provides an oscillating actuator that does not use a permanent magnet. This has a yoke formed in the shape of a D, and a swing lever is provided in a partially cut-out portion of the D so that the swing lever can swing. The yoke is symmetrically provided with two excitation coils. The swing lever swings by changing the direction of the current flowing through the excitation coil.

This uses two electromagnets, both of which must be energized at all times. this is,
It costs electricity and is uneconomical.

Therefore, monostable actuators that combine a permanent magnet and an excitation coil have been created.

The German company Hulting was the first to manufacture and sell such an actuator. Po1arisierte
r Kleinmagnet. It means a small polar solenoid.

This has a U-shaped yoke, two sub-yokes, a permanent magnet, a coil, a swing lever, etc. The swing lever is inserted into the hollow part of the coil and can swing around the pin at the bottom. The yoke and two sub-yokes form a magnetic circuit. Between one sub yoke and the yoke,
A permanent magnet magnetized in a direction perpendicular to the yoke surface is sandwiched between them.

The permanent magnets form a magnetic flux loop consisting of the secondary yoke, the lever, the yoke half, and the chain of permanent magnets, so that the lever is attracted to the secondary yoke near the permanent magnet. This is a stable state.

When the coil is energized, the magnetic flux of the permanent magnet is canceled out, and a magnetic flux loop is created in the chain consisting of the secondary yoke, half of the yoke, the lever, and the coil on the opposite side, the lever is drawn to the opposite side.

The permanent magnet, yoke, and sub-yoke are bonded with adhesive.

The yoke determines the overall skeleton.

The yoke and sub-yoke are also glued together. The yoke and sub-yoke on the opposite side of the permanent magnet overlap, so the thickness is doubled here. The yoke is made of small, thin sheets of mild steel, but it is more convenient to use adhesive than screws to hold them together.

However, since the adhesive does not harden immediately, it must be temporarily fixed, and there are disadvantages in that positioning errors are likely to occur. It will take some time for it to harden again.

The swing lever collides with the tip of the sub-yoke. Although the force of a single impact is weak, repeated collisions at high speed can cause the yoke to gradually open.

Further, the fulcrum pin of the swing lever is attached by drilling a side hole in another bottom plate different from the bottom plate of the yoke and inserting the fulcrum pin through the side hole. Apply adhesive to the side hole to prevent the fulcrum pin from falling out.

FIG. 11 shows a front view of Hulting's small polar solenoid.

A U-shaped yoke 1 and a permanent magnet 6 are bonded together at 81. The permanent magnet 6 and the sub-yoke 2a are bonded together at 52. The pin 11 is removed and replaced with adhesive in S3. The sub yoke 2b and the yoke 1 are bonded together at 54.

The lever 4 repeatedly collides with the end surfaces of the sub-yokes 2a and 2b.

An application for an electromagnetic device identical to that of Hulting has also been filed in Japan. Utsukai Showa 6l-27315 (S, 61
．． 2.18).

There is a half-inner part at the bottom of the bobbin that holds the pin, and the bottom plate has a groove into which the pin fits, and the half-inner part fits into this groove.

There is a portion of the yoke under the bottom plate, and the yoke contacts the bottom of the pin.

) Problems with the prior art The secondary yoke, permanent magnet, and yoke are fixed with adhesive.

Since the surfaces are bonded together using adhesive, they can be bonded in any overlapping state. This means that positioning in the height direction, such as the height of the magnet and the height of the sub-yoke, is difficult. The insertion height must be precisely determined using a special jig.

Adhesion errors may occur not only in the height direction but also in the horizontal direction.

Furthermore, when used as an actuator, it is not necessarily a sturdy structure because it is fixed only with adhesive.

The magnet is exposed to the outside and there is a risk of it being damaged by impact.

If a magnet breaks and enters the space in which the lever moves, it will prevent the lever from moving. This may cause malfunction.

A first object of the present invention is to provide an actuator that can facilitate positioning between a side yoke, a magnet, and a yoke.

A second object of the present invention is to provide an actuator that is easy to assemble without using much adhesive.

It is a third object of the present invention to provide an actuator with a robust assembly.

A fourth object of the present invention is to provide an actuator in which chipping of the magnet does not occur.

E) Configuration In the present invention, a new side holder is provided that surrounds the yoke, side yoke, and permanent magnet and determines their positional relationship.

Position the magnet, side yoke, and yoke using the side holder. Glue is used to secure it, but only a small amount is needed to cover the opening on the top.

Most of the magnets and side yokes are not glued and are fixed by side holders.

The side holder surrounds the magnet and prevents external shocks from being applied to the magnet. Therefore, there is no chance of the magnet becoming chipped.

This will be explained below with reference to the drawings.

FIG. 1 is an overall perspective view of the actuator of the present invention.

FIG. 2 is a plan view of the same. FIG. 3 shows a central longitudinal section. FIG. 4 is an exploded perspective view.

The actuator of the present invention includes a substantially U-shaped yoke 1 for forming a magnetic circuit, a bobbin 2 housed in the yoke 1, and a side yoke 3 having an abbreviated cross section forming a part of the magnetic circuit. , etc.

A swingable lever 4 is inserted into the bobbin 2. A coil 5 is wound around the bobbin 2.

Lever 4 also becomes part of the magnetic circuit.

A flat permanent magnet 6 is interposed between the side yoke 3 and the yoke 1, and provides a fixed amount of magnetic flux in a direction to a magnetic circuit consisting of the yoke 1, the side yoke 3, and the lever 4. The permanent magnet 6 is magnetized in a direction perpendicular to the plane.

Since the dimensions are limited (in this example, 6.6 mm x 1
2.6■×1.5■) A strong magnet is desirable.

It can also be used with ferrite. However, rare earth magnets have a higher B
It is easy to obtain one with a large Hm a X. For example, 2-
It is desirable to use 17 series samarium cobalt (Sm2C:o17) or 1-5 series samarium cobalt (5mCo5).

The side holder 7 is a component for easily and accurately attaching the permanent magnet 6 and the side yoke 3 to the yoke 1. This was not the case with conventional actuators.

The swing lever 4 is pulled in opposite directions by one side yoke 3 and the upper top plate portion 15 on the opposite side of the yoke 1.

A reinforcing plate 8 is provided to connect the side yoke 3 and the yoke 1 on the upper surface. This can prevent deformation of the yoke. It is a new member.

Set screws 9.9 fix the reinforcing plate 8 to the upper top part 32 of the side yoke 3 and the upper top plate part 15 of the yoke 1, respectively.

A fulcrum pin 11, which is to be the center of rotation of the lever 4, is inserted through the lower part of the bobbin 2 from the side.

From bobbin 2, two leads of 70.70 are coming out.

This is for energizing the coil 5.

The structure of the yoke 1 will be explained in order.

It consists of a bottom plate part 12, a side plate part 13, a side plate part 14, and an upper top plate part 15 following the side plate part 14. Compared to a conventional yoke that simply had a U-shaped cross section, the upper top plate portion 15 is increased. A conventional yoke consists of two sub-yokes glued together. The present invention eliminates the need for one sub-yoke by forming the upper top plate part 15 successively on the side plate part 14.

The other sub-yoke is fixed to one side of the permanent magnet and cannot be integrated with the yoke. This sub-yoke is called side yoke 3.

Yoke 1 is made of mild steel plate. In this example, the thickness is 1.2m
It is.

A bottom vertical groove 16 is bored in the bottom plate portion 12 of the yoke 1. This groove is located closer to the side plate part 14 than the side plate part 13, and is a groove through which a portion of the lever 4 below the pin 11 passes.

Side recesses 17.17 are cut out on both sides of the bottom longitudinal groove 16. This is for inserting the leg pieces 56, 56 at the bottom of the bobbin 2 and positioning the bobbin 2 with respect to the yoke 1.

The bottom plate portion 12 is provided with mounting screw holes 18 and 19 at the front and rear. This is a screw hole for fixing the actuator to another member.

Further, below one side plate portion 13, a lead 70.7 is provided.
A lead passage hole 20 for passing 0 is bored.

Now, in the yoke 1, the upper plate part 15 following the side plate part 14
A fixing screw hole 21 is bored in the. This is a screw hole in which the above-mentioned reinforcing plate 8 is superimposed on the upper plate part 15 and fixed with a set screw 9.

The side plate portion 13 is a portion that is inserted into the side holder 7. A step portion 22 is formed by a small cutout below the side plate portion 13. When the side holder 7 is inserted, the bottom of the guide holder 7 hits the stepped portion 22 and stops. This determines the height of the side holder 7.

There is also a stepped portion 23 above the side plate portion 14. This makes the width of the upper plate part 15 narrower than the other parts of the yoke, and the contact surface 3
This is for applying both ends of the bobbin 7 to the bobbin 2.

The side holder 7 includes a wide back plate portion 24 and holding plate portions 25 and 26 formed on both sides thereof to hold a portion of the yoke 1, the permanent magnet 6, and the side yoke 3.

A vertical protrusion 27 is formed in the middle of the inner surface of the holding plate portion 25,26. This is the part where the permanent magnet 6 is inserted.

At the same time, the side plate portion 13 of the yoke 1 is sandwiched together with the back plate portion 24.

Below the holding plate portions 25, 26, there is a vertical edge 28 on the inside. The lower end of the vertical side 28 touches the bottom surface portion 51 of the bobbin 2, and positions the side holder 7 with respect to the bobbin 2.

The side holder 7 may be made of non-magnetic material.

In this example, PBT (polybutylene terephthalate) is used. This is because it has good moldability and is easy to obtain high dimensional accuracy.

A bottom plate 30 is provided above the vertical side 28 of the side holder 1.

A rectangular yoke through hole 29 is bored in the bottom plate 30 near the back plate part 24. Here, the side plate part 13 of the yoke 1
Pass through. The stepped portion 22 of the side plate portion 13 corresponds to the bottom plate 30 of the side holder 7.

The permanent magnet 6 is inserted between the vertical protrusions 27° 27 of the side holder 7. It is magnetized in the direction perpendicular to the surface.

Side yoke 3 is a ferromagnetic material with an inverted cross section, and yoke 1
It is made of the same material. It is made of mild steel plate.

In this example, the thickness is 1.2 m.

The side yoke 3 also had a conventional actuator. The side yoke 3 includes a side plate part 31 extending vertically downward, and an upper stack part 32 connected in a right angle direction at the upper end of the side plate part 31.

A fixing screw hole 33 is bored in the upper stacking part 32.

This is done by attaching the reinforcing plate 8 to the upper part 3 with the set screw 9.
This is a screw hole for fixing to 2.

The side plate portion 31 is inserted between the holding plate portions 25 and 26 of the side holder 7. Since the vertical protrusions 27 contact the back surface of the side plate portion 31, the side yoke 3 becomes parallel to the side holder 7.

A step 34.34 is cut out above the side plate 31.

This is because the width of the stacked portion 32 is made a little narrower so that it can be positioned using the bobbin 2.

The upper part 32 of the side yoke 3 and the upper plate part 1 of the yoke 1
5 are connected by a reinforcing plate 8 and a set screw 9. The lever 4 will exclusively contact the contact surface 36 of the side yoke 3 and the contact surface 37 of the yoke 1.

The reinforcing plate 8 is a non-magnetic thin plate.

For example, aluminum, plastic, non-magnetic stainless steel, etc. A wide skylight 40 opens in the center. Round through holes 41 and 41 are drilled in the front and rear of it. This is a hole through which set screws 9,9 are passed.

The reinforcing plate 8 has the function of preventing the yoke and side yoke from opening due to repeated impact force of the lever. The through hole 41, set screw 9.9, fixed screw hole 21.33, etc. also have the effect of positioning the yoke and the side yoke.

The bobbin 2 has the roles of winding a coil, passing the lever 4 through the hollow portion, and holding the fulcrum pin 11 at the bottom. In addition, correctly determining the positions of the yoke 1, side yoke 3, and side holder 7,
It also plays the role of

In this way, the structure of the bobbin 2 is complex because it has many roles.

FIG. 5 is a perspective view of the bobbin seen from above.

FIG. 6 is a perspective view seen from below.

Further, FIG. 7 shows a central vertical cross-sectional view. Further, a cross-sectional view taken at right angles to this is shown in FIG.

The bobbin 2 has a vertically long square column part 50 in the middle. Although it is called a square prism, it has a rectangular cross section (7.2 w in this example)
x x 2.8 wta).

The bottom surface portion 51 is placed below the square column portion 50, and the top surface portion 5 is placed above the square column portion 50.
It has 2.

The square column portion 50 is a portion around which the enameled wire is wound. A coil is formed around this.

The inside of the square column part 50 is a swing space 53 in which the lever 4 can swing. In this example, the cross-sectional area of the swing space 53 is 5 mm x 1.9 van. The wall thickness is 0.6 mm on the thicker side and 0.45 van on the thinner side.

The swing space 53 has a lower opening 54 and an upper opening 55. In other words, the swing space 53 is a space that penetrates vertically.

Leg pieces 56° 56 are formed on both sides of the lower opening 54 of the bottom surface portion 51. As already mentioned, the leg pieces 56,56 fit into the side recesses 17 of the bottom plate part 12 of the yoke 1. This positions the bobbin bottom with respect to the yoke.

Furthermore, a pin groove 57 is formed on the back surface of the bottom surface portion 51 so as to cross the lower opening 54 . - Both sides of the pin groove 5T are provided with retaining pieces 58 to prevent the pin from coming off.

Further, on the back surface of the bottom part 51, a circular part 60 and one open recessed part 61 are shallowly formed. This is located directly above the mounting screw holes 18 and 19 of the yoke 1, and the tip of the screw is located in the recess 60.
, 61.

Horizontal lead through holes 62, 62 are provided on both sides of the upper surface portion 52.
is formed. This is a long piece that passes through the leads connected to both ends of the coil.

Immediately above the lead passage hole 62.62, a parallel top convex portion 63.63 is formed that swells upward. Top protrusion 6
There are very small yoke stop corners 64 on both ends of the inner surface of the 3.63. This is on both sides of the abutment surface 37 of the shield part 15 of the yoke 1, and on the abutment surface 3 of the upper stacked part 32 of the side yoke 3.
This is a small corner that fits both sides of 6.

As a result, the distance between the yoke 1, the side yoke 30), and the upper end is correctly defined.

The positioning edge 66 of the upper surface portion 52 of the bobbin 2 comes into contact with the inner surface of the side yoke 3, thereby positioning the side yoke with respect to the bobbin.

Next, the structure of the swing lever 4 will be explained.

FIG. 9 is a front view of the lever, and FIG. 70 is a sectional view taken along line XX in FIG. 9.

The lever 4 consists of a lever body 70, a circle i7L lever cap 76, and the like.

The lever main body 70 forms a magnetic circuit together with the yoke 1 and the side yoke 3, and is made of a ferromagnetic material such as a mild steel plate.

The lever main body 70 is connected upwardly to the arm γ3. There is γ3. This does not make contact with the yoke 1 and side yoke 3, but it allows access to the back surfaces of these, reducing the gap,
Lowers magnetic resistance.

A lever cap 76 made of plastic is outsert into the head 74 and the fixing hole 75 at the upper end of the lever body 70. This is the part that becomes the output of the actuator. The lever cap 16 is in contact with contact surfaces 36° and 37 of the yoke 1 and the side yoke 3.

Even when the lever is tilted toward either the yoke 1 or the side yoke 3, the lever body 70 does not come into contact with them. When magnetic materials come into contact with each other, magnetic resistance decreases and attractive force increases. On the other hand, a large force is required to pull it apart. This slows down the operation. This actuator is 150
Since it must vibrate at a frequency of Hz to 200Hz, the suction force is reduced to speed up the operation.

The disc 71 has a pin hole 72 into which the fulcrum pin 11 is inserted. Similarly to the lever cap 16, the disk γ1 is also formed by outsert resin.

The reason why the fulcrum pin 11 and the disk 71 are made to correspond is to improve the frictional characteristics. Rotation is smoother and there is less wear than when the fulcrum pin 11 is passed through a hole in the lever body.

In this example, the lever cap 76 and the disc 71 are 20%
I use 6.6 nylon with glass.

This is because it has good wear resistance and is resistant to heat.

Assembly (1) Prepare a bobbin with a coil wound around it and a lead 70 attached. Insert the lead into the lead passage hole 2 of the yoke.
Take it out from 0.

(2) Insert the bobbin 2 into the yoke 1 from the side.

(3) Insert the lever 4 from the upper opening 55 of the bobbin 2. The pin hole 72 is located in the middle of the leg pieces 56.56 at the bottom of the bobbin 2, and the fulcrum pin 11 is inserted into the pin hole 72 from between the leg pieces 56.56.

(4) Press the bobbin 2 toward the bottom plate portion 12 of the yoke 1. The fulcrum pin 11 is located in the pin groove 57 on the bottom surface of the bobbin 2.
Get into it. The bottom surface portion 51 of the bobbin 2 and the bottom plate portion 12 of the yoke 1 come close to almost touching each other.

(5) Pass the yoke through hole 29 of the side holder 7 through the vertical side plate portion 13 of the yoke 1, and insert the side holder 7 into the yoke 1.

(6) Insert the side yoke 3 between the holding plates 26 of the side holder 7.

(7) Insert the permanent magnet 6 between the side yoke 3 and the yoke side plate portion 13.

(8) Layer the reinforcing plate 8 on the steel plate portion 15 of the yoke 1 and the upper portion 32 of the side yoke 3.

(9) Screw together the through holes 41, 41 of the reinforcing plate 8, the fixing screw hole 33 of the side yoke, and the fixing screw hole 21 of the yoke with set screws 9, 9.

Ql Apply adhesive Q to the upper opening of side holder 7. This fixes the side holder 7, permanent magnet 6, yoke 1, and side yoke 3. Since these members are positioned by the side holders 7, they are not positioned when the adhesive Q is applied.

Further, there is no need for temporary fixation. If you leave it alone, the adhesive will harden naturally.

For 1t-1 work The operation will be explained with reference to FIG.

When the coil is not energized, the magnet 6 is magnetized in a direction perpendicular to the surface, so a magnetomotive force is generated between the surfaces of the magnet 6.

Magnetomotive force produces magnetic flux. The magnetic flux flows along a closed loop from the permanent magnet 6 to the side yoke 3, the lever body 70, the right half yoke 1, and the permanent magnet 6.

Therefore, the lever 4 is drawn to the right side and is in contact with the contact surface 36 of the side yoke 3.

Although the magnetic path is a closed loop, there is a disc 71 of non-magnetic material around the fulcrum of the lever and a gap between the upper end of the lever and the side yoke 3, so it is not a closed loop formed entirely of ferromagnetic material.

The reason for the gap between the lever and the side yoke is to achieve high speed for the reason already mentioned.

This state in which the lever is tilted to the right is stable. It is stable and does not require any springs.

Magnetic lines of force are directed to the lever 4 from top to bottom.

When the coil is energized, the lever can be moved in the opposite direction.

A current is passed through the coil so that lines of magnetic force are generated from the bottom to the top. This current cancels out the lines of magnetic force caused by the permanent magnet 6.

An N pole appeared on the contact surface 36 of the side yoke 3. The current creates a north pole at the upper end of the lever body 70. They repel because they are of the same polarity. The lever 4 swings to the left and moves to the position shown by the two-dot chain line.

The magnetic field lines flow from the lever body TO, around the left half yoke 1, and return to the lever body 70.

This state is also stable. As long as the current continues to flow, the lever 4 remains tilted to the left.

When the current is turned off, the magnetomotive force that magnetizes the lever 4 upward disappears. The magnetic flux from the permanent magnet becomes dominant again. Since the upper end of the lever is the S pole, the N pole of the contact surface 36 of the side yoke
drawn to the extreme. It tilts to the right again, reaching the state shown by the solid line.

In this way, by turning on and off the excitation current, the lever 4 can be moved left and right.

Unlike a solenoid that moves a plunger axially, this actuator can operate at high speeds.

It can swing at a speed of about 200H2.

(i) Effects Since a new side yoke is provided that surrounds a part of the yoke, the side yoke, and the permanent magnet and defines the positional relationship thereof, the present invention has the following effects.

(1) The height of the side yoke and magnet relative to the yoke can be defined. Also, no lateral deviation occurs. In other words,
The side yoke, magnet, yoke, and bobbin can be positioned correctly.

(2) Positioning is easy and while the adhesive is drying,
Assembly is easy because there is no need for temporary fixing.

(3) Adhesive is used, but since it only covers the opening on the top surface of the side holder, a small amount of adhesive is sufficient.

(4) The side holder surrounds and protects the magnet. Even if an external impact force is applied, the magnet will not be applied. If a magnet is applied, it may enter the swinging space of the lever and prevent it from swinging. However, in the present invention, such concerns cannot be avoided.

i) Example: The distance between the outer surfaces of the left and right side plates of the yoke is 20 mm, the height from the bottom plate of the yoke to the bottom plate is 21 m, the width of the wide part of the yoke is 8 mns, and the length of the bottom of the bobbin is 16 fins,
An actuator with a width of 8.6 m was manufactured. Weight is about 1
It is 61.

The coil was energized using a 12V power supply. The on/off delay time was about 1m5ec.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an actuator according to an embodiment of the present invention. Figure 2 is a plan view. Figure 3 is a longitudinal sectional view. FIG. 4 is an exploded perspective view. FIG. 5 is a perspective view of only the bobbin seen from above. FIG. 6 is a perspective view of only the bobbin seen from below. FIG. 7 is a central vertical sectional view of the bobbin. FIG. 8 is a sectional view taken along ■--■ in FIG. 7. Figure 9 is a front view of the lever. FIG. 70 is a sectional view taken along line XX in FIG. 9. FIG. 11 is a front view of a known rocking actuator that was first manufactured and sold by Hulting. 1... Yaw 2... Bobbin 3... Side yoke 4... Bar 5... Coil 6 ...Permanent magnet 7 ...Side holder 8 ...Reinforcement 8-strong plate 9 ...Set screw 70 ...Lead 11 ... ...Fullin pin 12...Bottom plate part 13.14...Side plate part 15...Shifu plate part 16...Bottom vertical groove 17... ...Side concave part 18.19...Mounting screw hole 20...Lead through hole 21...Fixing screw hole 22.23...Step part 24 ...Back plate part 25.26...Holding plate part 27...Vertical convex strip 28...Vertical side 29...Yoke passage Hole 30...Bottom Plate 31...Side plate part 32...Shifu part 33...Fixing screw hole 34...Step part 35. ...Bottom side 36...Top face 40...Skylight 41...Through hole 50...Square column part 51... ... Bottom part 52 ... Top part 53 ... Rocking space 54 ... Bottom opening 55 ... Top opening 56 ... Leg piece 57...Pin Groove 58...Removal stop piece 60...Circle Concave portion 61...Concave portion 62...Lead Through hole 63...Top convex part 64...Yoke stop corner 70...Lever body 71...Circle plate 72...Pin Hole 73...Arm 74...Head Door 5...Fixing hole 76...Lever cap Q...Adhesive Sl, S2, Sl... Adhesive Inventor Naotaka Kamiya Patent Applicant Kamiya Electronics Co., Ltd. No. 7 Fig. na □ Mizome No. 9 Fig. 70 Fig. ) Patent Application No. 117837, July 26, 1985 2. Title of the invention: Rocking actuator with side holder 3. Relationship with the case of the person making the amendment Patent applicant: Location: 5-5 Sakata, Wakayama City Name: Kamiya Denshi Kogyo Co., Ltd. Representative: Naotaka Kamiya 4; Agent: 537 Hitodumi Address: 3-15-16 Nakamichi, Higashinari-ku, Osaka City
1 6. Contents of the amendment (1) "Germany" on page 7, line 5 of the specification is corrected to "West Germany." (18) For amendments to the drawings, please refer to the attached sheet.

Claims (6)

[Claims] (1) The upper top plate part 1 is formed into a U-shape consisting of the side plate part 13, the bottom plate part 12, and the side plate part 14, and further extends almost at right angles to the side plate part 14.
5 and a swing space 53 inside.
a bobbin 2 having a rectangular prism section 50 around which a coil 5 is wound; a bottom surface section 51 and a top surface section 52 that are superimposed on the bottom plate section 12 of the yoke 1 following the rectangular prism section 50;
A flat permanent magnet 6 that contacts the inner surface of the side plate 13 and is magnetized in a direction perpendicular to the surface, and a side plate 31 that contacts the other surface of the permanent magnet 6 and is bent almost at right angles thereto. A magnetic side yoke 3 having an upper top portion 32, a fulcrum pin 11 held and positioned by the bottom surface portion 51 of the bobbin 2 and the yoke bottom plate portion 12, and a swing space 5 inside the bobbin 2.
3, a magnetic lever body 70 inserted into the lever body 70, and a non-magnetic lever cap 7 fixed on the lever body 70.
6, and a lever 4 whose lower end is swingably supported by the fulcrum pin 11, and when the coil is not energized, the lever 4 is moved to the top part 32 of the side yoke 3 by the magnetomotive force of the permanent magnet 6. By being attracted to the contact surface 36 and maintaining a stable position, and by passing current through the coil 5 in a direction that cancels the magnetomotive force of the permanent magnet 6, the lever 4 is moved over the yoke 1 on the opposite side to the side yoke 3. The lever body 70 is made to be attracted to the contact surface 37 of the top plate part 15, and the lever body 70, which is a magnetic material, is prevented from coming into contact with the side yoke 3 and the yoke 1, which are magnetic materials, even when the lever 4 is drawn in any direction. In the swing type actuator, the side plate part 1 of the yoke 1
3, a bottom plate 30 having a yoke through hole 29 for passing through the yoke;
A back plate part 24 attached to the yoke side plate part 13 is formed on both sides of the bottom plate 30 and the back plate part 24 so as to be substantially perpendicular thereto, and holds the yoke side plate part 13, the permanent magnet 6, and the side yoke 3 in an overlapping manner. A side holder 7 made of a non-magnetic material having holding plate parts 25 and 26 is provided, and the permanent magnet 6 and the side yoke 3 are combined with the yoke side plate part 13 by the side holder 7. A swing type actuator with a side holder characterized by applying adhesive only to the opening and letting it harden. (2) Vertical protrusions 27, 27 are formed in the vertical direction on the inner surfaces of the holding plates 25, 26, and the permanent magnet 6 extends from the side yoke side plate 31 and the yoke side plate 13 to the vertical protrusions 27, 27. The width is narrowed by the height of , and the permanent magnet 6 is sandwiched between the vertical protrusions 27, 27, and the yoke side plate part 13 is attached to the back plate part 24 of the side holder 7 and the vertical protrusions 27, 27. Claim (1) characterized in that the side plate portion 31 of the side yoke 3 is supported by the inner surface of the holding plate portion 26 and the vertical protrusions 27, 27. Oscillating actuator with side holder shown. (3) Below the side plate portion 13 of the yoke 1 are stepped portions 22, 22.
is formed, and the bottom plate 30 of the side holder 7 is connected to the stepped portion 2.
2 and 22 to define the height of the side holder 7 with respect to the yoke 1. (4) The holding plates 25 and 26 of the side holder 7 have a vertical side 28 extending downward, and the vertical side 28 is connected to the bottom surface 51 of the bobbin 2.
The swing type actuator with a side holder according to claim 1, wherein the side holder 7 is positioned with respect to the bobbin 2 by pressing . (5) The side yoke 3 is positioned relative to the bobbin 2 by the positioning edge 66 of the upper surface portion 52 of the bobbin 2 coming into contact with the inner surface of the side yoke 3. Swing type actuator with side holder described in item 1). (6) The rocking actuator with a side holder according to any one of claims (1) to (5), wherein the material of the side holder 7 is PBT.