JPH09166809A - Electromagnet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the attraction of an electromagnet device by setting an adjusting plate at a prescribed position to suppress rotation. SOLUTION: This device is composed of a yoke 4, an armature 3 which is attracted to this yoke 4, a lever 1 which is energized in a direction parting from the armature 3 from the yoke 4 and has a bent and recessed part extending in a longitudinal direction by bending this part in a short side direction, a pin 5 which is mounted at the armature 3 on the opposite side of a head part 5a and is inserted into a hole 1c formed at this lever 1 and the adjusting plate 6 which is arranged between the head part 5a of the pin 5 and the lever 1, comes into contact with the head part 5a of the pin 5 at two points 6a, 6b and comes into contact with the lever 1 as well at two points. In such a case, the adjusting plate 6 is brought into contact with the bent and recessed part of the lever 1 at two points 6c and 6d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for an armature piece of an electromagnet device.

[0002]

2. Description of the Related Art Even when an attracting surface of a yoke of an electromagnet device is inclined, an armature piece is surely brought into contact with the yoke,
A structure for obtaining stable adsorption is, for example, Jitsuko Sho 61-576.
It is disclosed in Japanese Utility Model Publication No. 7 (Shokai 56-53210). This is a structure in which a protrusion is provided at a position corresponding to the vicinity of the center of the suction surface on the flange or the iron piece lever at the contact portion of the armature attachment shaft flange and the iron piece lever.

[0003]

However, since the armature piece rotates only in the direction about the line connecting the two investigations, there is a problem in that it is effective only for the inclination of the suction surface around the axis. .

Therefore, an armature support is provided by using a rhombus-shaped adjusting plate having a hole formed in a substantially central portion thereof and having a dogleg shape with a line connecting two apexes facing each other as an axis. We proposed a mechanism that stabilizes the suction force by making the separating force acting on the armature lever act almost in the center of the suction surface even when the suction part and the suction surface are tilted, but the problem is that this adjustment plate rotates. was there.

The present invention has been made in view of the above problems, and an object of the present invention is to set the adjusting plate at a predetermined position to prevent the rotation and stabilize the adsorption of the electromagnet device.

[0006]

In order to achieve this object, a first aspect of the present invention relates to a yoke (4), an armature (3) attracted to the yoke, and a biasing force in a direction in which the armature moves away from the yoke. A lever (1) having a bending recess extending in the longitudinal direction by bending in the lateral direction, and a pin (5) attached to the armature on the opposite side of the head (5a) and inserted through a hole formed in the lever. , An adjusting plate (6) arranged in the middle of the head of the pin and the lever, contacting the head of the pin (5a) at two points (6a and 6b), and also contacting the lever at two points, Two points (6c and 6d) where the adjusting plate comes into contact with the lever are configured to come into contact with each other in the bent concave portion (1b) of the lever.

A second aspect of the invention is a yoke (4), an armature (3) attracted to the yoke, and a lever (1) which is biased in a direction away from the yoke and has a locking portion.
And a pin (5) attached to the armature on the opposite side of the head and inserted through a hole formed in the lever, and arranged in the middle of the head of the pin and the lever and contacting the head of the pin at two points. , And the adjusting plate (6) that comes into contact with the lever at two points, and the adjusting plate comes into contact with the lever at two points (6c and 6).
d) is configured to come into contact with the locking portions (31a to 61d) of the lever.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of an electromagnet device according to the present invention.

In FIG. 1, reference numeral 1 denotes an armature lever rotatably attached to a fixed shaft 2 fixed to a fixed portion (not shown), and an armature support portion 1a is formed at one end thereof. The armature support portion 1a is formed in a V shape as described later. An armature 3 has a suction surface 3a. Reference numeral 4 denotes an electromagnet composed of a coil and a yoke, which has adsorption surfaces 4a and 4b. The suction surface 3a is configured to be able to contact the suction surfaces 4a and 4b. Adsorption surfaces 3a, 4a, and 4
b and the armature support portion 1a are substantially parallel to each other, and the electromagnet 4 is fixed to a fixing portion (not shown).

Reference numeral 5 denotes an armature mounting pin which is integrated with the armature 3. Armature attachment pin 5
Is arranged substantially in the center of the suction surface 3a, and a head portion 5a is formed at the right end (FIG. 1) of the shaft portion 5b. The shaft portion 5b is
It is inserted into a hole 1c formed in the armature support portion 1a of the armature lever 1, and the hole 1c is slightly larger than the shaft portion 5b. The adjusting plate 6 has a hole 6e slightly larger than the shaft portion 5b, the shaft portion 5b is inserted into the hole 6e, and the adjusting plate 6 is arranged between the armature support portion 1a and the head portion 5a. The adjusting plate 6 is bent in a dogleg shape at the central portion as illustrated. Reference numeral 7 is a spring having one end attached to the armature lever 1 and the other end attached to the fixed portion, and biases the armature lever 1 in the clockwise direction.

FIG. 2 is a view taken in the direction of arrow A in FIG. As shown in FIG. 2, the adjusting plate 6 has a rhombus shape, and the apex portions 6a and 6b are formed in the bent portion, and the end portions 6c and 6d are formed in the upper and lower ends (FIG. 2). ing. Top 6
A line 10 connecting a and 6b and a line 11 connecting ends 6c and 6d pass through substantially the center of the armature attachment pin 5 and are substantially orthogonal to each other.

FIG. 3 is a view on arrow B of FIG. The armature support portion 1a is formed in a dogleg shape, and the ends 6c and 6d of the adjusting plate 6 are in contact with the valley line 1b.

Returning to FIG. 1, the description will be continued. In FIG. 1, the electromagnet 4 is excited and the armature 3 is resisted against the biasing force of the spring 7.
Shows the state in which is absorbed by the electromagnet 4. At this time, the tops 6a and 6b of the adjustment plate 6 are in contact with the head 5a, and the ends 6c and 6d are in contact with the valley line 1b of the armature support 1a. The biasing force of the spring 7 acts on the intersection of the lines 10 and 11, and therefore acts on almost the center of the suction surface 3a.

FIG. 4 shows a case where the armature support portion 1a is tilted around the fixed shaft 2 with respect to the attraction surface of the electromagnet 4 due to manufacturing errors or the like. Even in this case, the adjusting plate 6
The tops 6a and 6b of the abutment against the head 5a and the end 6
c and 6d abut on the valley line 1b of the armature support 1a, and the adjusting plate 6 follows the inclination of the armature support 1a with the line 10 connecting the tops 6a and 6b as an axis. Therefore,
Since the urging force of the spring 7 acts on the intersection of the lines 10 and 11, that is, almost at the center of the attraction surface of the electromagnet 4 and the armature 3, the attraction force substantially equal to that in the case of FIG. 1 is obtained.

FIG. 5 is a view taken in the direction of arrow B in FIG. 1, and shows the armature around the line C in FIG. 1 (almost parallel to the line 11 connecting the ends 6c and 6d and orthogonal to the fixed shaft 2). Support part 1a
Shows a case in which is tilted with respect to the attracting surface of the electromagnet 4.
Also in this case, similarly, the tops 6a and 6b of the adjusting plate 6 contact the head 5a, the ends 6c and 6d contact the valley line 1b of the armature support 1a, and the urging force of the spring 7 is the line 1a.
Since it acts at the intersection of 0 and 11, that is, at substantially the center of the attraction surface of the electromagnet 4 and the armature 3, an attraction force substantially similar to that in the case of FIG. 1 is obtained.

By combining the inclinations in the two directions, it is apparent that the adjusting plate 6 follows the inclination of the armature support portion 1a in an arbitrary direction. Therefore, how the armature support portion 1a operates. Adjustment plate 6 even if tilted
Since the tops 6a and 6b of the armature contact the head portion 5a of the armature attachment pin 5 and the ends 6c and 6d contact the armature support portion 1a, the biasing force of the spring 7 is the intersection of the lines 10 and 11, that is, the electromagnet 4 and the armature. By acting on almost the center of the suction surface of No. 3, a suction force almost similar to that in the case of FIG. 1 is obtained. Although the case where the armature support portion 1a is tilted has been described, the tilt relative to the attraction surface 3a, 4a, or 4b poses a problem. Three
It is effective even when a, 4a, or 4b and the armature support portion 1a are not parallel.

Further, the ends 6c and 6d of the adjusting plate 6 are
Since it is in contact with the valley line 1b of the armature support portion 1a,
Especially, the adjusting plate 6 does not rotate around the mounting pin 5, and the position can be stabilized.

In the embodiment described above, the adjusting plate 6 has a rhombic shape, and the bent portions have tops 6a and 6b.
Is formed, and ends 6c and 6 are formed at the upper and lower ends (FIG. 2).
Although it is described that the d is formed, as shown in FIG. 6, it may be configured by a combination of the flat adjustment plate 16 and the pins 16a to 16d. That is, the pins 16a and 16b are planted on the front surface (FIG. 6A) of the plane adjusting plate 16, and the pins 16c and 16d are planted on the back surface of the plane adjusting plate 16. Pins 16a and 16b correspond to the tops 6a and 6b shown in FIG. 2, respectively, and pins 16c and 16d correspond to the ends 6c and 6d, respectively.
As a result, the flat adjusting plate 16 functions similarly to the adjusting plate 6.

Further, as shown in FIG. 7, the adjusting plate 26 formed by press working and the projections 26a to 26d may be combined. That is, the protrusions 26a and 2
6b is formed on the front side of the adjusting plate 26 (FIG. 7A),
The protrusions 26c and 26d are formed on the back side of the adjusting plate 26. The protrusions 26a and 26b are the top portions 6a shown in FIG.
And 6b, and projections 26c and 26d, respectively.
Correspond to the ends 6c and 6d, respectively, and as a result, the adjusting plate 26 functions similarly to the adjusting plate 6.

Further, in the above-described embodiment, the armature support portion 1a is formed in a dogleg shape, and the valley line 1b is described. However, as shown in FIG. 8, the valley line 1b is omitted. Armature support portion 1a is formed in a flat shape, and the end portion 6
Protrusions 31a and 31b that sandwich c and protrusions 31c and 31d that sandwich end 6d are provided, and these protrusions 31a to 3
The rotation of the adjusting plate 6 can be suppressed by 1d.

[0022]

As described above, according to the electromagnet device of the present invention, the pin head (5a) and two places (6a and 6b) are provided.
The adjustment plate (6) that contacts at
Since the lever (1) is also contacted at two points in (b), it is possible to set the adjusting plate (6) at a predetermined position to prevent rotation and to stabilize the adsorption of the electromagnet device. Further, since the position of the adjusting plate can be stabilized by the centering mechanism, even if the armature is tilted, the separating force that acts on the lever can be applied to almost the center of the suction surface,
As compared with the case where the adjusting plate has no centering mechanism, the suction force is more stable. Further, the same effect can be obtained regardless of the direction of the armature inclination.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an electromagnet device according to the present invention.

FIG. 2 is a side view showing an embodiment of an electromagnet device according to the present invention.

FIG. 3 is a top view showing an embodiment of the electromagnet device according to the present invention.

FIG. 4 is a front view showing an embodiment of an electromagnet device according to the present invention.

FIG. 5 is a top view showing an embodiment of the electromagnet device according to the present invention.

FIG. 6 is a front view and a side view showing a modified example of the electromagnet device according to the present invention.

FIG. 7 is a front view and a side view showing a modified example of the electromagnet device according to the present invention.

FIG. 8 is a side view showing a modified example of the electromagnet device according to the present invention.

[Explanation of symbols]

 1 Armature Lever 1a Armature Support 1b Valley Line 1c Hole 2 Fixed Axis 3 Armature 3a Adsorption Surface 4 Electromagnet 4a Adsorption Surface 5 Armature Attachment Pin 5a Head 5b Shaft 6 Adjustment Plate 6a Top 6b Top 6c Hole 6e End 6e 10 wire 11 wire 16 plane adjustment plate 16a to 16d pin 26 adjustment plate 26a to 26d protrusion

Claims (6)

[Claims] 1. A yoke, an armature attracted to the yoke, and a lever having a bending recess extending in the longitudinal direction by being biased in a direction in which the armature separates from the yoke and bending in the lateral direction, The pin on the opposite side of the head is attached to the armature, is inserted through a hole formed in the lever, and is located between the head of the pin and the lever, and contacts the head of the pin at two points, An electromagnet device comprising: an adjusting plate that also contacts the lever at two points, and two points where the adjusting plate contacts the lever make contact at a bent concave portion of the lever. 2. A yoke, an armature attracted to the yoke, a lever having a locking portion that is biased in a direction in which the armature separates from the yoke, and an opposite side of the head is attached to the armature, A pin that is inserted through a hole formed in the lever, and an adjustment plate that is disposed between the head of the pin and the lever, contacts the head of the pin at two points, and contacts the lever at two points. An electromagnet device comprising: the adjusting plate abutting with a locking portion of the lever at two points where the adjusting plate comes into contact with the lever. 3. The electromagnet device according to claim 2, wherein the locking portion is four protrusions that respectively sandwich two positions where the adjustment plate contacts the lever. 4. The locking portion according to claim 2, wherein the locking portion is two protrusions that come into contact with each other from one side in a lateral direction at two locations where the adjustment plate contacts the lever. Electromagnet device to do. 5. The electromagnet device according to claim 2, wherein the engaging portion is two protrusions that sandwich either one of the two locations where the adjustment plate comes into contact with the lever. 6. The straight line connecting two points in contact with the pin head of the adjusting plate and the straight line connecting two points in contact with the lever of the adjusting plate according to claim 1 or 2. An electromagnet device characterized by being in a crossing relationship.