JP3372402B2 - solenoid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid which can be used for, for example, pachinko ball firing, ON / OFF of various valves and switches, and a printing / stamping machine (typewriter, etc.), and more particularly to an assembly structure thereof.

[0002]

2. Description of the Related Art As a conventional solenoid of this type, for example, there is one shown in FIG.
409). That is, the plunger 200,
A hollow sleeve 202 provided with a guide hole 201 into which the plunger 200 is reciprocally inserted, and an electromagnetic coil 203 provided so as to surround the sleeve 202.
And a pair of upper plates 204 and lower plates 205 provided on both sides of the electromagnetic coil 203 in the axial direction, and a case 206 that surrounds the outer periphery of the electromagnetic coil 203 and has both axial ends contacting the upper plate 204 and the lower plate 205. , Are provided.

Then, by energizing the electromagnetic coil 203, the plunger 200 and the case 206 are passed through the pair of upper plate 204 and lower plate 205.
A magnetic path passing therethrough is formed to drive the plunger 200.

The plunger 200 has a rod 207.
Is fixed, and covers 208, 208 having a hole for slidably guiding the rod 207 are screw members 20.
It was fixed by 9 to the upper plate 204 and the lower plate 205 at both ends. Since the plunger 200 collides with one of the covers 208 during magnetic attraction, the cover 208
An elastic body 210 for cushioning was provided at the portion where the plunger 200 of FIG.

[0005]

However, in the case of the above-mentioned prior art, the bobbin 211 around which the electromagnetic coil 203 is wound has the upper and lower plates 204 and 205 arranged at both ends, and the axial end portion of the case 206. Since caulking was fixed, caulking equipment was required.

Further, the covers 208, 208 at both ends are attached to the upper plate 204, the lower plate 205 and the screw member 20.
Since it was fixed at 9, manufacturing was difficult.

Further, since the solenoid is screwed directly to the frame of the counterpart mounting device, the vibration due to the solenoid operation is directly transmitted to the frame.

Further, when the solenoid is turned on, the plunger 200 comes into contact with the elastic body 210 and stops, so there is sound and vibration damping effect, but when the solenoid is turned off, the spring force of the spring 212 causes the plunger 200 to directly contact the inside of the other cover 208. , Noise and vibration cannot be prevented.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to:
An object of the present invention is to provide a solenoid that can be easily manufactured and can simplify assembly equipment.

It is also possible to further enhance the soundproofing and antivibration effects.

[0011]

In order to achieve the above object, in the present invention, a movable member and a hollow cylindrical member provided with a guide hole into which the movable member is reciprocally inserted. An electromagnetic coil provided so as to surround the tubular member, a pair of yoke members provided on both sides in the axial direction of the electromagnetic coil, and a case provided so as to surround the outer periphery of the electromagnetic coil and having both axial ends contacting the pair of yoke members. A member for driving the movable member by forming a magnetic path that passes between the movable member and the case member via a pair of yoke members when the electromagnetic coil is energized. It is characterized in that an assembling member which is made to protrude from the member and can be fitted into the protruding end portion of the tubular member is provided, and the case member and the yoke member are assembled through the assembling member.

The movable member is provided with a rod projecting to at least one axial side of the tubular member, and a bearing member for guiding the rod further axially outside the assembly member is provided. It is characterized in that it can be fitted and fixed to the protruding end of the tubular member.

The movable member is provided with a rod projecting at least on one axial side of the tubular member. A bearing member for guiding the rod is provided, and the bearing member is provided at the projecting end of the tubular member. The mounting member can be fitted and fixed, and the assembly member is formed of an elastic material, and the bearing member is integrally formed on the inner peripheral portion of the assembly member.

The assembly member is formed of an elastic material and can be used as a mounting seat portion of the solenoid or as a cushioning material at the stroke end of the movable member.

In the present invention, in the assembling work, the assembling member is fitted into the protruding end of the tubular member projecting beyond the yoke member, and the case member and the yoke member are pressed and fixed. Since the assembly member has a fitting structure, it can be easily manufactured.

Also, the bearing member for guiding the rod provided on the movable member can be easily assembled only by fitting it into the projecting end of the tubular member. Moreover, since the bearing member is fixed to the tubular member that guides the movable member, the effect of restricting the axis deviation is enhanced.

If the bearing member is integrally formed on the inner peripheral portion of the assembly member, the bearing member is also fitted to the projecting end portion of the cylindrical member by fitting the assembly member into the projecting end portion of the cylindrical member. Fixed. From this, the number of assembling steps can be reduced, and the production can be further facilitated.

In addition, since the bearing member is provided on the inner peripheral portion of the assembling member, the length of the rod can be shortened as compared with the case where it is provided on the outer side in the axial direction of the assembling member. . Therefore, the solenoid can be made compact.

Furthermore, if the assembly member is made of an elastic material and is used as a mounting seat portion of the solenoid, it has an effect of interrupting transmission of vibrations between the solenoid and a mating member.

Further, if it is used as a cushioning material at the stroke end of the movable member, it is possible to absorb the impact at the time of collision of the movable member without using a separate cushioning member.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the illustrated embodiments.

1 and 2 show a solenoid according to the first embodiment of the present invention.

That is, this solenoid 1 is wound around the bobbin 4 and a bobbin 4 as a hollow cylindrical member provided with a plunger 2 as a movable member, a guide hole 3 into which the plunger 2 is reciprocally movable. The electromagnetic coil 5 is provided.

An upper plate 6 and a lower plate 7 as a pair of yoke members are provided on both sides of the electromagnetic coil 5 in the axial direction. In this embodiment, the upper plate 6 and the lower plate 7 are embedded in the bobbin 4 and integrally formed. Further, a cylindrical case member 8 is provided so as to surround the outer circumference of the electromagnetic coil 5, and the inner circumferences of both ends of the case member 8 are assembled so as to be in close contact with the outer peripheral surfaces of the upper plate 6 and the lower plate 7. The case member 8 is assembled by the first and second assembling members 9 and 10 which are fitted and fixed to the bobbin 4.

The bobbin 4 is a cylindrical resin molded body, and the first and second flange portions 11 and 12 are provided in the axially intermediate portions thereof, and the upper plate 6 and the second flange portion 11 and 12 are provided on the first and second flange portions 11 and 12, respectively. The lower plate 7 is integrally embedded.
The upper plate 6 and the lower plate 7 are washers, and the inner diameter ends of the upper plate 6 and the lower plate 7 are not exposed in the guide hole 3
A thin portion 13 separates the inner circumference from the inner circumference. Further, the outer diameter ends of the upper plate 6 and the lower plate 7 are exposed from the resin portion and come into direct contact with the case member 8. First and second flange portions 11, 12
The distance between the axially outer end faces that do not face each other is set to be equal to the length of the case member 8.

On the other hand, at a position between the first and second flange portions 11 and 12 and displaced to the first flange portion 11 side, the third flange which is thinner than the first and second flange portions 11 and 12 is formed. The portion 14 is overhanging, and the third flange portion 14 and the second
The electrode coil 5 is wound between the flange portions 12. A lead wire 15 is arranged between the first flange portion 11 and the third flange portion 14.

Further, at both axial ends of the bobbin 4, first and second cylindrical projecting portions 16 and 17 projecting circumferentially from the first and second flange portions 11 and 12 by a predetermined length extend. ,
From the end faces of the cylindrical protrusions 16 and 17,
A plurality of locking pieces 20 for fixing the second bearing members 18 and 19 are projected. A step portion 21 is provided on the outer periphery of the front end portion of the locking piece 20 to facilitate fitting of the first and second bearing members 18 and 19, and a locking claw 22 for preventing slipping off is provided at the tip of the step portion 21. Is provided.

The first and second assembling members 9 and 10 are formed of a rubber-like elastic material, and as shown in FIGS. 2B and 2C, have a flat bottomed cylindrical shape with a flange. In general, the cylindrical portions 91 and 101 and the cylindrical portion 9
Central disk-shaped bottom part 9 connected to one end of 1, 101
2 and 102, and flange portions 93 and 103 protruding outward in the radial direction from the other ends of the cylindrical portions 91 and 101. Rod insertion holes 94 and 104 are formed in the centers of the bottom surface portions 92 and 102, and further, around the rod insertion holes 94 and 104, a locking piece insertion portion for inserting the locking piece 20 of the bobbin 4 is inserted. Holes 95 and 105 are provided. A stepped portion 9 is formed on the inner edge of the rod insertion holes 94 and 104.
6, 106 are provided and are thin.

The outer diameters of the flange portions 93, 103 of the first and second assembly members 9, 10 are slightly larger than the outer diameter of the case member 8 so as to press the end surface of the case member 8. Further, the cylindrical portions 91 and 101 are closely fitted to the outer circumferences of the first and second cylindrical protruding portions 16 and 17 of the bobbin 4,
The case member 8 is fixed by the frictional engagement force.

Further, the flange portion 93 of the first assembly member 9 on the upper plate 6 side is provided with a hole 97 for letting out the lead wire 15.

Next, the first and second bearing members 18, 19 are
Bearings 181 and 191 for guiding the rod 29 slidably are provided in the center of the disk-shaped member, and the locking holes 182 and 19 around which the locking pieces 20 of the bobbin 4 are locked.
Two are provided. The locking claws 22 of the locking pieces 20 are locked to the edges of the locking holes 182 and 192 to prevent them from coming off.

A slight gap g is provided between the facing surfaces of the first and second bearing members 18 and 19 and the first and second mounting members 9 and 10 described above. The gap g is for releasing the bending of the rubber.

Further, the plunger 2 is constantly urged to one side in the axial direction by the spring 23, and the plunger 2 is pressed against the bottom surface portion 102 of the second assembly member 10 in the free state.

When the electromagnetic coil 5 is energized from this state,
A magnetic circuit passing through the plunger 2-upper plate 6, case member 8-lower plate 7-plunger 2 is formed,
Plunger 2 on the center side of the electromagnetic coil 5 that increases the magnetic flux density
Are sucked and moved. Then, even when the plunger 2 reaches the center of the bobbin 4, the plunger 2 moves by the inertia of the bobbin 4 until it contacts the first assembly member 9 at the other end. The energization of the electromagnetic coil 5 is controlled so that it is energized only up to near the central portion. When the power is continued beyond the central portion, the attraction force in the pulling back direction acts to balance at the central position.

Further, a frame 24 for attaching to various devices is properly attached to the solenoid. The frame 24 is a frame having a U-shaped cross section, and is composed of end plates 25, 25 attached to the first and second assembly members 9, 10 and a connecting plate 26 connecting the end plates 25, 25. ing. This utilizes the 1st, 2nd assembly members 9 and 10 as a mounting seat part.

This solenoid 1 is assembled by bobbin 4
Although it may be assembled from either direction of both ends of FIG.
As shown in (a), the case of fixing from the upper plate 6 side will be described as an example. First, the first assembly member 9 is fitted into the first cylindrical protruding portion 16 of the bobbin 4 on the upper plate 6 side. When fitting the first assembly member 9, the cylindrical portion 91 of the first assembly member 9 is placed on the outer periphery of the first cylindrical protrusion 16 of the bobbin 4, and the flange portion 93 is formed on the first flange portion 11 of the bobbin 4. Push it in until it touches. The locking piece 20 extending from the first cylindrical protrusion 16 and the lead wire 15 of the electromagnetic coil 5 are inserted into the holes 96 and 97, respectively.

Next, the spring 23 and the plunger 2 are inserted in this order from the opening on the opposite side of the bobbin 4, and the bobbin 4
The case member 8 is provided on the outer periphery of the first and second flange portions 11 and 12 of
To fit the second assembly member 10 to the flange portion 10 of the second assembly member 10.
3 is inserted until the end face of the second flange portion 12 is contacted, and the case member 8 is fixed. Further, the second bearing member 19 is engaged with the engaging piece 20 and assembled.

Next, as shown in FIGS. 3 (a) and 3 (b),
The U-shaped frame 24 is appropriately fitted so as to sandwich the flange portions 93 and 103 of the first and second assembly members 9 and 10.

As described above, the frame 24 has the first and second frames.
An end plate 25 that comes into contact with the flange portions 93 and 103 of the second assembly members 9 and 10, and a connecting plate 26 that connects the end plate 25,
The end plate 25 is provided with a circular fitting recess 28 having a notch 27 in a portion where the cylindrical parts 91, 101 of the first and second assembly members 9, 10 of the solenoid fit. Has been. You just need to fit this frame 24,
Can be easily installed.

If such a frame 24 is attached, when it is fixed to the mating attachment portion via the frame 24,
The first and second assembly members 9 and 10 function as cushioning materials,
Vibration transmission can be reduced.

FIGS. 3 (c) to 3 (e) show an example of the structure in which the solenoid 1 is used in a pachinko ball launching device.

That is, the cap 30 is attached to the pachinko ball contact portion at the tip of the rod 29 of the solenoid 1, and the cap 30 is attached to the device case 31. The device case 31 includes a solenoid mounting part 32 for mounting the solenoid 1, a ball mounting part 35 for mounting the pachinko balls 33, and a fixing flange 34 for fixing the device case 31 to a pachinko machine stand (not shown). It is provided. In the solenoid mounting portion 32, the solenoid 1 is fixed to the device case 31 via the first and second assembly members 9 and 10, and the impact that the solenoid 1 repels the pachinko ball 33 with respect to the device case 31. It is not transmitted.

FIGS. 4A to 4E show a second embodiment of the solenoid of the present invention.

Unlike the first embodiment, this solenoid 1 is an example in which one end of the bobbin 40 is closed, and the rod 29 extends only to one end of the plunger 2. That is, the second cylindrical protruding portion 17 of the end portion of the bobbin 40 on the lower plate 7 side is closed by the closed end wall 41 as shown in FIGS. 4D and 4E, and the end on the upper plate 6 side is closed. The parts are exactly the same as in the first embodiment.

Further, the first assembling member 9 also has the same structure as that of the first embodiment, except that FIGS.
2, the second mounting member 42 is a flat cylindrical member with a flange without a bottom surface, the cylindrical portion 43 is fitted and fixed to the outer periphery of the second cylindrical protruding portion 17, and the flange portion 44 is a case member. Abutting the end of 8.

Since other structures and operations are the same as those of the first embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

FIG. 5 shows the third embodiment of the present invention, and the same components as those in the first embodiment are designated by the same reference numerals.

Unlike the first embodiment, this solenoid 1 has first and second bearing members 18, 19 for guiding the rod 29 to the inner peripheral portions of the first and second assembly members 9A, 10A.
It is an example of integrally molding. That is, the first and second assembly members 9A and 10A are the first and second assembly members 9 and 10 of the first embodiment, and the bottom surface portions 92 and 102 are the first and second bearing members 18 and 19, respectively. It is a thing.

The first and second assembling members 9A and 10A are formed of a rubber-like elastic material as in the first embodiment, and have a cylindrical shape with flanges at both ends. And inward flange portions 92A and 102 that project radially inward from one end of the cylindrical portions 91 and 101.
A and flange portions 93 and 103 protruding outward in the radial direction from the other ends of the cylindrical portions 91 and 101.

The inward flange portions 92A and 102A have
Locking piece insertion hole 9 for inserting the locking piece 20 of the bobbin 4
5, 105 are provided, and the locking piece insertion holes 95,
The annular grooves 98, 108 are provided at the outer peripheral position of the axially intermediate portion of 105.
have.

Then, in the inward flange portions 92A and 102A which are the inner peripheral portions of the cylindrical portions 91 and 101,
The first and second bearing members 18, 1 with respect to the annular grooves 98, 108.
The outer peripheral portion of the first and second assembling members 9 is integrally formed by, for example, insert molding so that the outer peripheral portion of the member 9 is fitted.
A, 10A and the first and second bearing members 18, 19 are integrated.

During this molding, the first and second bearing members 18,
Rubber-like elastic materials forming inward flange portions 92A and 102A are integrally baked and fixed to both ends of the member 19.

Then, as described above, with the first and second assembly members 9A and 10A and the first and second bearing members 18 and 19 being integrated, the first and second assembly members 9A and 9A, 10
The solenoid 1 is assembled by fitting A into the first and second cylindrical protrusions 16 and 17 of the bobbin 4.

When fitting the first and second mounting members, the cylindrical portion 9 of the first and second mounting members 9A and 10A is fitted.
1, 102 are pushed into the outer peripheries of the first and second cylindrical protruding portions 16, 17 until the flange portions 93, 103 come into contact with the first and second flange portions 11, 12 of the bobbin 4. At this time, since the first and second bearing members 18 and 19 are integrally provided on the inner peripheral portions of the cylindrical portions 91 and 102, the first and second bearing members 18 and 19 are engaged with the locking holes 182. , 192, and is fitted into the step portion 21 of the locking piece 20, and the locking hole 18
The locking claws 22 are locked to the edges of the holes 2 and 192 to be assembled.

Solenoid 1 assembled in this way
Is attached to the frame 24A. This frame 24
A is a frame body and is composed of end plates 25A and 25A attached to the first and second assembling members 9A and 10A, and a connecting plate 26A connecting the end plates 25A and 25A. One end plate 25A has a hole 251 and the other end plate 25A has a step portion 252. The first assembling member 9A is fitted into the hole 251 and the second assembling member 10A. The step 2
The solenoid 1 is attached by engaging with 52.

In the third embodiment, as described above, the first and second bearing members 18 and 19 are integrally provided on the inner peripheral portions of the first and second assembly members 9A and 10A. By assembling the first and second assembly members 9A and 10A on the outer circumferences of the first and second cylindrical protrusions 16 and 17 of the bobbin 4, the first and second bearing members 18 and 19 are Since the second cylindrical protrusions 16 and 17 are assembled, the number of assembling steps can be reduced and the manufacturing can be further facilitated.

Since the first and second bearing members 18 and 19 are provided on the inner peripheral portions of the first and second assembly members 9A and 10A, the first and second bearing members 18 and 19 are the same as those in the first embodiment. Compared with the case where it is provided on the outer side in the axial direction of the assembling members 9 and 10,
The length of the rod 29 can be shortened, and the solenoid can be made compact.

Further, since rubber-like elastic members forming the inward flange portions 92A and 102A of the first and second mounting members 9A and 10A are attached to both ends of the first and second bearing members 18 and 19, respectively. It is possible to buffer the impact of collision when the plunger 2 is sucked and returned. The rubber-like elastic members on the outer sides of the first and second bearing members 18 and 19 project inwardly because the first and second bearing members 18 and 19 are projected when the plunger 2 is impacted.
This is because it is difficult for the second bearing members 18 and 19 to shift.

Since other structures and operations are the same as those of the first embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

Although the above embodiment has exemplified the case of using for pachinko firing, it can be widely used for ON / OFF of valves, switches and the like, printing / marking (typewriter, etc.) machines and the like. Further, in the present embodiment, the so-called solenoid having no fixed iron core has been described, but the present invention is not limited to the solenoid having no fixed iron core, and is similarly applied to a solenoid having a fixed iron core. You can

[0061]

According to the present invention having the above-described structure and operation, the case member is fixed by sandwiching the case member from the axial direction by using the assembling member fitted in the tubular member supporting the electromagnetic coil. It does not require caulking equipment, and the solenoid can be manufactured easily at low cost.

Also, the bearing member for guiding the rod can be easily assembled by merely fitting it into the protruding end of the tubular member, and the bearing member is a tubular member for guiding the movable member. Since it is fixed to, the axis deviation can be effectively controlled.

When the bearing member is integrally formed on the inner peripheral portion of the assembly member, the bearing member is also fitted to the projecting end portion of the cylindrical member by fitting the assembly member into the projecting end portion of the cylindrical member. Can be fixed. From this, the number of assembling steps can be reduced, and the production can be further facilitated.

In addition, since the bearing member is provided on the inner peripheral portion of the assembly member, the length of the rod can be shortened as compared with the case where it is provided on the outer side in the axial direction of the assembly member. The solenoid can be made compact.

Furthermore, if the assembly member is made of an elastic material and is used as the mounting seat portion of the solenoid, it is possible to achieve vibration isolation and noise reduction with the mounting counterpart member without using a buffer material.

Further, if it is used as a cushioning material at the stroke end of the movable member, the impact at the time of collision of the movable member can be absorbed,
Vibration and noise reduction effects can be further enhanced.

[Brief description of drawings]

1A and 1B show a solenoid according to a first embodiment of the present invention. FIG. 1A is a longitudinal sectional view showing a solenoid OFF state, and FIG. 1B is a longitudinal sectional view showing a solenoid ON state.

2 (a) is an exploded view of the solenoid of FIG. 1,
FIGS. 9B to 9G are views showing the assembly member, the bearing member, and the bobbin.

3 (a) and 3 (b) are a front view and a side view showing a state in which a solenoid is mounted on a frame, and FIGS. 3 (c) to (e) are views showing a pachinko ball launch pad with a solenoid attached thereto. .

FIG. 4 shows a solenoid according to a second embodiment of the present invention. FIG. 4 (a) is a vertical sectional view of the solenoid in an OFF state, and FIGS. 4 (b) to (e) show an assembly member. It is a figure which shows a bobbin.

FIG. 5 shows a solenoid according to a third embodiment of the present invention, and is a longitudinal sectional view of the solenoid in an OFF state.

FIG. 6 is a vertical sectional view showing a conventional solenoid.

[Explanation of symbols]

1 solenoid 2 Plunger 3 guide holes 4 bobbins 5 electromagnetic coil 6 Upper plate (yoke member) 7 Lower plate (Yoke member) 8 case members 9,9A, 10,10A First and second assembly members 11, 12 First and second flange parts 13 Thin part 14 Third flange 15 lead wire 16, 17 First and second cylindrical protrusions 18,19 First and second bearing members 20 Locking piece 21 steps 22 Locking claw 23 spring 24, 24A frame 25,25A end plate 26,26A connecting plate 27 Notches 28 Fitting recess 29 rod 30 caps 31 Equipment case 32 Solenoid mounting part 33 Pachinko balls 34 Fixed flange 35 Ball mount 40 bobbins 41 closed end wall 42 Second assembly member 43 Cylindrical part 44 Flange

Claims (5)

(57) [Claims] 1. A movable member, a hollow cylindrical member provided with a guide hole into which the movable member is reciprocally inserted, an electromagnetic coil provided so as to surround the cylindrical member, and the electromagnetic coil. A pair of yoke members provided on both sides in the axial direction, and a case member provided so as to surround the outer periphery of the electromagnetic coil and contacting the pair of yoke members at both axial ends thereof. In a solenoid that drives a movable member by forming a magnetic path that passes between a movable member and a case member via a yoke member, both axial ends of the cylindrical member protrude beyond the yoke member, and the protruding end of the cylindrical member A solenoid characterized in that an assembling member which can be fitted into the portion is provided, and the case member and the yoke member are assembled through the assembling member. 2. The movable member is provided with a rod projecting to at least one axial side of the tubular member, and a bearing member for guiding the rod further axially outward of the assembly member is provided. The solenoid according to claim 1, wherein the member can be fitted and fixed to the protruding end of the tubular member. 3. The movable member is provided with a rod projecting at least on one axial side of the tubular member, a bearing member for guiding the rod is provided, and the bearing member is provided with a protruding end of the tubular member. 2. The solenoid according to claim 1, wherein the solenoid member is formed so that it can be fitted and fixed in the portion, the assembly member is formed of an elastic material, and the bearing member is integrally formed on the inner peripheral portion of the assembly member. 4. The solenoid according to claim 1, wherein the assembly member is formed of an elastic material and is used as a mounting seat portion of the solenoid. 5. The assembly member is formed of an elastic material and is used as a cushioning material at the stroke end of the movable member.
The solenoid according to 3 or 4.