JPH05128956A - Movable contactor supporting system - Google Patents

Abstract

PURPOSE:To provide an economical movable contactor supporting system which is easy to be assembled and has high productivity. CONSTITUTION:In a supporting system of a movable contactor to be used in an electromagnetic switchgear, a window part (open part) 6a of a cross bar 6 is made to have a wide width part 6c and it is made to have a relation (a)>(b)>(c) among height size (a), (b), and (c) wherein (a) stands for one height size of ear parts 11a, 11b which are of a spring receiver 11 sliding together with the cross bar 6 and have different height size each other, (b) for the other height size, and (c) for the height size of the wide width part 6. It is no need to tilt the spring receiver or contract a contacting sprint compactly at the time of assembly work to insert the spring receiver and the contacting spring in the open part of the cross bar and the assembly work is carried out easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable contactor supporting mechanism for attaching a movable contactor used in an electromagnetic switch or the like to a window (opening) of a crossbar which is attracted by a magnetic force to move. It is about.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view showing a conventional electromagnetic switch with half of a side surface cut away. In the figure, 1 is a mounting base, and the mounting base 1 accommodates a fixed iron core 4 and an exciting coil 3. A movable iron core 5 is arranged above the fixed iron core 4 at a predetermined interval so as to face each other.

A crossbar 6 made of an insulating material is connected to the movable iron core 5, and a movable contact 8 is slidably held in a window portion (opening) 6a in the upper portion of the crossbar 6. The crossbar 6 is slidably guided by the case 2 so as to be vertically movable. Then, in order to apply a sufficient contact pressure to the movable contactor 8, the contact spring 7 provided in the window portion 6a of the crossbar 6 moves the movable contactor 8 into the window portion 6a.
It is biased to one side of a. The contact spring 7 is held by a spring receiver 11 provided in the window 6a and a protrusion 6b of the crossbar 6.

At both ends of the movable contact 8, movable contacts 8a,
8b is joined, and fixed contacts 9a and 10a are joined to one ends of the fixed contacts 9 and 10, respectively. The movable contacts 8a and 8b and the fixed contacts 9a and 10a are arranged to face each other with a predetermined contact gap. Has been done.

Next, the operation of the above conventional electromagnetic switch will be described. First, when a voltage is applied to the exciting coil 3, a magnetic flux is generated, and the magnetic flux generates an attractive force between the fixed iron core 4 and the movable iron core 5. Due to this suction force, the combined body of the movable iron core 5 and the crossbar 6 moves downward against the biasing force of the tripping spring (not shown).

By moving the combination of the movable iron core 5 and the crossbar 6 downward, the movable contacts 8a, 8b and the fixed contact 9 are moved.
a and 10a contact. Here, the iron core gap between the movable iron core 5 and the fixed iron core 4 in the open state of the electromagnetic switch is set to be larger than the contact gap between the movable contacts 8a, 8b and the fixed contacts 9a, 10a. Therefore, the contact wipe can be obtained when the crossbar 6 moves further downward than the contact position of the movable contacts 8a, 8b and the fixed contacts 9a, 10a. Then, the contact spring 7 is compressed,
The compressive force is urged by the movable contactor 8 to generate a contact pressure. In this way, the movable contacts 8a, 8b and the fixed contact 9
The closing operation of a and 10a is completed.

Next, when the voltage applied to the exciting coil 3 is removed, the attractive force between the fixed iron core 4 and the movable iron core 5 disappears, and the movable iron core 5 and the movable iron core 5 are crossed by the urging force of a tripping spring (not shown). The combined body of the bar 6 moves upward, the movable contacts 8a and 8b and the fixed contacts 9a and 10a are separated, and the contact opening operation is completed.

FIG. 7 is an explanatory view showing an enlarged main portion of a crossbar portion when a contact spring is inserted in a conventional electromagnetic switch. In the figure, 6 is a crossbar, 6a is a window (opening) provided in the upper part of the crossbar 6, 7 is a contact spring, and the contact spring 7 is a spring receiver 11 provided in the window 6a.
And is held by the protrusion 6b of the crossbar 6. 1
1a is an ear of the spring receiver 11.

Next, the procedure for assembling the contact spring 7 in the window 6a of the crossbar 6 of this electromagnetic switch will be described with reference to FIG.
Will be explained. The window 6a of the crossbar 6 has a rectangular shape, and a projection 6b for engaging with the contact spring 7 is provided above the window 6a. An ear portion 11a for sliding with the crossbar 6 is added to the spring receiver 11, and the width of the ear portion 11a is necessarily larger than the width of the window portion 6a.

In order to insert the spring bearing 11 into the window portion 6a of the crossbar 6, the spring bearing 11 is placed in the window portion 6 of the crossbar 6.
Insert at an angle to a. The contact spring 7 to the window 6
When the spring receiver 11 is inserted into the window portion 6a first when it is inserted into the a, the rising dimension (height dimension) of the ear portion 11a of the spring bearing 11 from the length of the window portion 6a of the crossbar 6 a
The contact spring 7 which has been compressed in advance is inserted into the window 6a so that the value obtained by subtracting the height of the protrusion 6b for engaging with the contact spring 7 is obtained. When the contact spring 7 is inserted into the window 6a at the same time as the spring receiver 11, the contact spring 7
Is pressed against the spring receiver 11 and is inserted further into the window portion 6a in a further inclined state.

[0011]

The conventional electromagnetic switch described above is constructed as described above, and when the spring receiver 11 and the contact spring 7 are inserted into the window 6a of the crossbar 6, There were some problems to mention. (1) When inserting the spring receiver 11 into the window 6a of the crossbar 6, the spring receiver 11 is inserted at an angle with respect to the window 6a.
It was extremely difficult to hold the soybeans, which forced them to resort to manual work. Further, even in the manual work, it is difficult to hold the spring receiver 11, which is the same as in the above case, and a considerable skill is required. (2) When inserting the contact spring 7 into the window portion 6a of the crossbar 6, the contact spring 7 must be assembled in the window portion 6a in a state in which the contact spring 7 is greatly contracted in advance and the biasing force is applied. Since the contact spring 7 is in a situation of being adjacent to the danger of splashing and it is also difficult to mechanically work, it is necessary to perform it manually by a skilled worker.

The present invention has been made in order to solve the above-mentioned problems, and in a structure for supporting a movable contact held by a cross bar, a structure that does not require skill in assembling work and is easy to assemble. None, and eventually, it is an object of the present invention to provide an inexpensive movable contactor support mechanism with high productivity by enabling assembly work by an automatic machine.

[0013]

A movable contact support mechanism according to a first aspect of the present invention includes a spring receiver biased by a contact spring in an opening of a crossbar that is attracted by a magnetic force to move, and an opening of the crossbar. A movable contactor is sandwiched between the edge of the cross section and a wide portion at the opening of the crossbar, and the height dimension of this wide portion is c, and there are two spring bearings that slide with the crossbar. Of the ears whose heights are different from each other, the height of one is a and the height of the other is b.
And the height dimensions of a, b, and c are: a>c> b
It is configured to have a relationship of.

A movable contact support mechanism according to a second aspect of the present invention includes the element according to the first aspect of the present invention, and the height (thickness) dimension d of the movable contact at the portion engaging with the spring receiver is
It is configured to be larger than the height c of the wide portion in the opening of the crossbar.

A movable contact support mechanism according to a third aspect of the present invention includes the element according to the first or second aspect of the invention, and
Ribs are provided on both sides of the opening of the crossbar at a distance smaller than the diagonal dimension between the narrow width portion and the wide width portion of the spring receiver and wider than the wide width portion of the spring receiver.

In the movable contactor support mechanism according to the fourth aspect of the present invention, a spring receiver biased by a contact spring in the opening of the crossbar that is attracted by the magnetic force to move, and an edge of the opening of the crossbar. In the case where the movable contactor is sandwiched between them, a wide portion that partially expands is provided in the opening of the crossbar, and the height dimension of this wide portion is c, and the height dimension of the beginning end of the wide portion is f, the height of one of the two different heights of the spring bar that slides with the crossbar is a, and the height of the other is b. When the height dimension of the narrow part connected at the center is e, the height dimension of each a, b, c, e, f is a> c
> B and f> e.

A movable contact support mechanism according to a fifth aspect of the present invention includes the element according to the fourth aspect of the present invention, and the height (thickness) dimension d of the movable contact at the portion engaging with the spring receiver is
The height c of the wide portion partially widened in the opening of the crossbar and the height f of the starting end of the wide portion are made larger than the combined value.

The movable contact support mechanism according to the sixth invention is
The element according to the fourth or fifth aspect of the invention is provided, and on both sides of the opening of the crossbar, it is narrower than the diagonal dimension between the narrow width portion and the wide width portion of the spring receiver and wider than the wide width portion of the spring receiver. The ribs are provided at intervals.

In the movable contact support mechanism according to the seventh aspect of the present invention, a spring receiver urged by a contact spring in the opening of the crossbar that is attracted by the magnetic force to move, and an edge of the opening of the crossbar. In the case where the movable contactor is sandwiched between them, the opening of the crossbar has a U-shape that opens on the contact spring side, and the narrow and wide parts of the spring receiver are paired on both sides of the opening of the crossbar. Ribs are provided at a distance narrower than the angular dimension and wider than the wide width part of the spring receiver.
Each of the U-shaped tip portions is configured to be fixed by a claw portion that engages with the concave portion of each U-shaped tip portion and sandwiches each tip portion, and a stopper that has a seat portion that receives a contact spring. It was done.

[0020]

In the movable contactor support mechanism according to the first aspect of the present invention, the spring bearing and the contact spring can be easily provided in the opening of the crossbar when the spring bearing and the contact spring are horizontal and the contact spring is not strongly pressed. Can be inserted into.

In the movable contact support mechanism according to the second aspect of the present invention, the spring bearing and the contact spring are easily provided in the opening of the crossbar in a state where the spring bearing and the contact spring are horizontal and the contact spring is not pressed strongly. The movable contact can be prevented from being caught on the stepped portion of the opening of the crossbar.

In the movable contact support mechanism according to the third aspect of the present invention, the spring bearing and the contact spring are easily provided in the opening of the crossbar in a state where the spring bearing and the contact spring are horizontal and the contact spring is not strongly pressed. The spring receiver can be prevented from rotating in the opening of the crossbar after insertion. Furthermore, the movable contact can be prevented from being caught on the stepped portion of the opening of the crossbar.

In the movable contact support mechanism according to the fourth aspect of the present invention, the spring receiver and the contact spring are easily provided in the opening of the crossbar in a state where the spring receiver and the contact spring are horizontal and the contact spring is not strongly pressed. In addition, even if the movable contact is not inserted into the opening of the crossbar in the intermediate assembling work, the spring receiver does not come out of the opening of the crossbar.

In the movable contactor support mechanism according to the fifth aspect of the present invention, the spring bearing and the contact spring can be easily provided in the opening of the crossbar in a state where the spring bearing and the contact spring are horizontal and the contact spring is not strongly pressed. The movable contact can be prevented from being caught on the stepped portion of the opening of the crossbar, and the movable contact can be inserted into the opening of the crossbar in the intermediate assembling work. The spring retainer does not come out of the opening of the crossbar even if it is not.

In the movable contactor support mechanism according to the sixth aspect of the present invention, the spring bearing and the contact spring can be easily provided in the opening of the crossbar in a state where the spring bearing and the contact spring are horizontal and the contact spring is not strongly pressed. The spring receiver can be prevented from rotating in the opening of the crossbar after insertion. Further, the movable contact can be prevented from being caught on the stepped portion of the opening of the crossbar, and the spring bearing can be crossed even when the movable contact is not inserted into the opening of the crossbar during the intermediate assembling work. Do not get out of the bar opening.

In the movable contact support mechanism according to the seventh aspect of the present invention, the spring receiver and the contact spring are inserted into the opening of the crossbar from above in a state where the spring receiver and the contact spring are horizontal and the contact spring is not strongly pressed. Can be easily inserted and the spring receiver can be prevented from rotating in the opening of the crossbar after insertion. Further, in the intermediate assembling work, even if the movable contact is not inserted into the opening of the crossbar, the spring receiver does not come out from the opening of the crossbar, and the opening of the crossbar and the movable contact come into contact with each other. It is not necessary to provide a mating surface for the mold on the surface when manufacturing the crossbar.

[0027]

【Example】

Example 1. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to an embodiment of the present invention. An embodiment of the first invention will be described with reference to FIG. In the figure, 6 is a crossbar, and 6a is a crossbar 6.
The window portion (opening portion) 6c is a wide portion provided in the window portion 6a of the crossbar 6. c is the height dimension of the wide portion 6c. Reference numeral 11 is a spring receiver, and 11a and 11b are ears of the spring receiver 11. a is the height of the ear 11a, and b is the ear 11
It is the height dimension of b, and the height dimensions a and b of the ears 11a and 11b are different from each other. Reference numeral 7 is a contact spring that applies a biasing force to the spring receiver 11, and 8 is a movable contactor, and movable contacts 8a and 8b are joined to both ends of the movable contactor 8. d is a height (thickness) dimension of the movable contactor 8 at a portion engaging with the spring receiver 11.

The width of the wide width portion 6c provided in the window portion 6a of the crossbar 6 is wider than the width of the spring bearing 11, but the heights a and b of the ears 11a and 11b of the spring bearing 11 are large. Has a relation of a>c> b with the height dimension c of the wide portion 6c. Therefore, when the spring receiver 11 is inserted into the window 6a of the crossbar 6, the ears 11a of the spring receiver 11 cross. The bar 6 comes into contact with it so that it does not fall off. In addition, the contact spring 7 and the spring receiver 11 are combined to form the window portion 6 of the crossbar 6.
Even when the contact spring 7 is inserted into a, the contact spring 7 can be easily inserted in a horizontal state while being pushed into the spring receiver 11, so that the contact spring 7 does not need to be largely compressed.

Example 2. An embodiment of the second invention will be described with reference to FIG. In the embodiment of the present invention shown in FIG. 1, in the embodiment of the second invention, as the configuration of the movable contactor 8, the height (thickness) dimension of the portion of the movable contactor 8 that engages with the spring receiver 11 is set. d is larger than the height dimension c of the wide portion 6c of the window 6a of the crossbar 6.

Therefore, in the second embodiment of the invention, the spring bearing 11 and the contact spring 7 are horizontal, and the spring bearing is not strongly pressed into the window 6a of the crossbar 6. 11 and the contact spring 7 can be easily inserted, and the movable contact 8 can be prevented from being caught in the stepped portion formed by the wide width portion 6c provided in the window portion 6a of the crossbar 6. ..

Example 3. An embodiment of the third invention will be described with reference to FIG. 2 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention, and the same reference numerals as those in FIG. 1 denote the same or corresponding portions, Detailed description thereof will be omitted. In the figure, 6d is a rib for supporting the sliding of the spring receiver 11, and the ribs 6d are provided on both sides of the window portion 6a of the crossbar 6 so as to have a narrow width portion and a wide width portion (ears 11a and 11b) of the spring bearing 11. The width is narrower than the diagonal dimension of and and wider than the wide portion of the spring receiver 11. By providing the rib 6d, when the spring receiver 11 is inserted into the window portion 6a of the crossbar 6, the inclination of the spring receiver 11 is regulated by the rib 6d, and stable insertion work can be performed. Other configurations shown in FIG. 2 are the same as the configurations shown in FIG.

Therefore, in the third embodiment of the present invention, the spring bearing 11 and the contact spring 7 are horizontal, and the spring bearing is not strongly pressed into the window 6a of the crossbar 6. 11 and the contact spring 7 can be easily inserted, and after the insertion, the spring receiver 11 has the cross bar 6
It can be prevented from rotating in the window portion 6a. Further, the movable contact 8 can be prevented from being caught by the stepped portion formed by the wide width portion 6c provided in the window portion 6a of the crossbar 6.

Example 4. An embodiment of the fourth invention will be described with reference to FIG. FIG. 3 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention. The same reference numerals as those in FIG. 1 denote the same or corresponding portions, Detailed description thereof will be omitted. In the figure, 6c is a wide width portion that partially expands at the window portion 6a of the crossbar 6, c is the height dimension of the wide width portion 6c, and f is the wide width portion 6.
It is the height dimension at the beginning of c. Reference numeral 11 denotes a U-shaped spring receiver, 11a and 11b are ears of the spring receiver 11, the ears 11a and 11b are connected by a narrow width portion at the center, and e is a narrow width at both end surfaces of the ears 11a and 11b. The height of the width.

The width of the wide width portion 6c partially provided in the window portion 6a of the crossbar 6 is wider than the width of the spring bearing 11, but the height of the ears 11a and 11b of the spring bearing 11 is large. a and b are between the height dimension c of the wide width part 6c and a> c
Since there is a relation of> b, the spring bearing 11 is attached to the crossbar 6
Of the spring receiver 11 when inserted into the window portion 6a of the
The a comes into contact with the crossbar 6 and is prevented from falling off.
In addition, the contact spring 7 and the spring receiver 11 are combined so that the crossbar 6
When inserting the window portion 6a of the
The contact spring 7 does not need to be largely compressed because the contact spring 7 can be easily inserted in a horizontal state while being pushed in.

In addition, the height dimension e of the narrow width portions of the ears 11a and 11b of the spring receiver 11 is the height dimension of the end portion of the beginning of the wide width portion 6c partially expanded in the window portion 6a of the crossbar 6. Since it is smaller than f, the spring bearing 11 can be pulled out from the window 6a of the crossbar 6 toward the front even at the stage of an intermediate component in which the movable contact 8 is not inserted into the window 6a of the crossbar 6. Absent.

Example 5. An embodiment of the fifth invention will be described with reference to FIG. In another embodiment of the present invention shown in FIG. 3, in the fifth embodiment of the present invention, the movable contact 8 is configured such that the height (thickness ) The dimension d is configured to be larger than a value obtained by combining the height dimension c of the wide portion 6c where the crossbar 6 is partially widened and the height dimension f of the starting end portion of the wide portion 6c. ..

Therefore, in the embodiment of the fifth aspect of the invention, the spring bearing 11 and the contact spring 7 are horizontal and the contact spring 7 is not strongly pressed. 11 and the contact spring 7 can be easily inserted, and the movable contact 8 is prevented from being caught in the stepped portion formed by the wide width portion 6c partially provided in the window portion 6a of the crossbar 6. You can
Even if the movable contactor 8 is not inserted into the window 6a of the crossbar 6 in the intermediate assembling work, the spring receiver 11 does not come out of the window 6a of the crossbar 6.

Example 6. An embodiment of the sixth invention will be described with reference to FIG. FIG. 4 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention. The same reference numerals as those in FIG. 3 denote the same or corresponding portions, Detailed description thereof will be omitted. In the figure, 6d is a rib for supporting the sliding of the spring receiver 11, and the ribs 6d are provided on both sides of the window portion 6a of the crossbar 6 so as to have a narrow width portion and a wide width portion (ears 11a and 11b) of the spring bearing 11. The width is narrower than the diagonal dimension of and and wider than the wide portion of the spring receiver 11. By providing the rib 6d, when the spring receiver 11 is inserted into the window portion 6a of the crossbar 6, the inclination of the spring receiver 11 is regulated by the rib 6d, and stable insertion work can be performed. The other configuration shown in FIG. 4 is the same as the configuration shown in FIG.

Therefore, in the sixth embodiment of the present invention, the spring bearing 11 and the contact spring 7 are horizontal, and the contact spring 7 is not strongly pressed. 11 and the contact spring 7 can be easily inserted, and after the insertion, the spring receiver 11 has the cross bar 6
It can be prevented from rotating in the window portion 6a. Further, the movable contact 8 can be prevented from being caught on the stepped portion formed by the wide width portion 6c partially provided in the window portion 6a of the crossbar 6, and the crossbar can be assembled in the middle. Even when the movable contact 8 is not inserted into the window portion 6a of the crossbar 6, the spring receiver 11 keeps the window portion 6 of the crossbar 6 open.
You never get out of a.

Example 7. An embodiment of the seventh invention will be described with reference to FIG. FIG. 5 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention, and the same reference numerals as those in FIG. 4 denote the same or corresponding portions. , Its detailed description is omitted. In the figure, the window (opening) 6a of the crossbar 6 is a contact spring 7
The cross-bar 6 has a U-shape that is open on both sides, and on both sides of the window portion 6a of the crossbar 6, the narrow width portion and the wide width portion of the spring receiver 11 (the ear portion 1).
Ribs 6d are provided at a distance narrower than the diagonal dimension with respect to 1a, 11b) and wider than the wide width portion of the spring receiver 11. By providing the rib 6d, when the spring receiver 11 is inserted into the window portion 6a of the crossbar 6, the inclination of the spring receiver 11 is regulated by the rib 6d, and stable insertion work can be performed. Reference numeral 6e is a recess provided in each U-shaped tip of the crossbar 6. 12 is a U-shaped crossbar 6
Is a stopper for preventing the deformation of the crossbar 6, 12a is a claw portion that engages with the recessed portion 6e provided at each U-shaped tip of the crossbar 6, and 12b is a seat portion that receives the contact spring 7. The claw portion 12a of the stopper 12 engages with the concave portion 6e of each U-shaped tip of the crossbar 6 to sandwich each tip, whereby each U-shaped tip of the crossbar 6 is a stopper. It is fixed by 12 firmly.

Therefore, in the seventh embodiment of the invention, the U of the crossbar 6 is U when the spring receiver 11 and the contact spring 7 are horizontal and the contact spring 7 is not strongly pressed.
The spring receiver 11 and the contact spring 7 can be easily inserted without tilting the spring receiver 11 or pressing the contact spring 7 in the window portion 6a in which each tip portion is opened in a V shape.
Further, it is possible to prevent the spring receiver 11 from rotating in the window portion 6a of the crossbar 6 after the insertion. Further, the movable contact 8 is inserted in the window 6a of the crossbar 6 by an intermediate assembling work.
The spring receiver 11 does not slip out of the window portion 6a of the crossbar 6 even if is not inserted.

[0042]

As described above, according to the movable contactor support mechanism of the first aspect of the invention, the spring receiver biased by the contact spring in the opening of the crossbar that is attracted by the magnetic force to move, and the crossbar. In the case where the movable contact is sandwiched between the opening and the edge of the opening, a wide portion is provided in the opening of the crossbar, and the height dimension of this wide portion is set to c. Of the two ears having different heights, the height of one is a and the height of the other is b.
And the height dimensions of a, b, and c are: a>c> b
Since there is a relationship of 2), the spring receiver and the contact spring can be inserted into the opening of the crossbar without assembling the spring receiver and shrinking the contact spring slightly. Since it is easy to do, the skill required for the assembly work, which was necessary in this type of conventional example, is not required, and the assembly work can be simplified, so that it can be automated by a machine and the movable contactor support is inexpensive. It has an excellent effect of obtaining a mechanism.

According to the movable contactor support mechanism of the second invention, the height (thickness) dimension d of the movable contactor at the portion engaging with the spring receiver is
Since it is configured to be larger than the height dimension c of the wide part in the opening of the crossbar, the spring receiver and the contact spring are inserted into the opening of the crossbar without tilting the spring receiver and shrinking the contact spring slightly. Because it can be assembled by
The assembling work becomes easy, the assembling work required in the conventional example of this kind is not required, and the assembling work can be simplified, so that it can be automated by a machine and the movable contact is inexpensive. It is possible to obtain a child support mechanism, and further, it is possible to provide a movable contact support mechanism in which the movable contact can be smoothly operated without being caught by the step portion of the opening of the crossbar.

According to the movable contact support mechanism of the third invention, the movable contact support mechanism is provided with the elements according to the first or second invention, and
Since the ribs are provided on both sides of the opening of the crossbar, the ribs being narrower than the diagonal dimension of the narrow width portion and the wide width portion of the spring bearing and wider than the wide width portion of the spring bearing. Can be assembled by inserting the spring bearing and the contact spring into the opening of the crossbar without tilting the contact spring and shrinking the contact spring to a small degree, and the spring bearing can be rotated in the opening of the crossbar after insertion. As a result, the assembling work is facilitated, the skill required for the assembling work required in the conventional example of this kind is not necessary, and the assembling work can be simplified, so that automation by a machine is possible. It is possible to obtain a low-priced movable contactor support mechanism, and further, it is possible to provide a movable contactor support mechanism in which the movable contactor can be smoothly operated without being caught in the stepped portion of the opening of the crossbar. Play effect That.

According to the movable contactor support mechanism of the fourth aspect of the invention, the spring bearing biased by the contact spring in the opening of the crossbar that is attracted by the magnetic force to move, and the edge of the opening of the crossbar. The movable contactor is sandwiched between and, the crossbar has a wide part partially widened in the opening, and the height dimension of this wide part is c, and the height of the beginning end of the wide part is The dimension is f, the height of one of the two ears having different heights of the spring bar that slides with the crossbar is a, and the height of the other is b, and When the height dimension of the narrow width part where the parts are connected at the center is e, the height dimension of each a, b, c, e, f is
Since the relations of a>c> b and f> c are established, the spring bearing and the contact spring can be provided in the opening of the crossbar without tilting the spring bearing and shrinking the contact spring slightly. Since it can be inserted and assembled, the assembling work is facilitated, the skill required for the assembling work required in the conventional example of this kind is not required, and the assembling work can be simplified. It is possible to obtain an inexpensive movable contactor support mechanism that can be automated by using, and even if the movable contactor is not inserted into the opening of the crossbar during the intermediate assembly work, the spring receiver can slip out of the opening of the crossbar. There is an excellent effect such as the provision of a movable contactor support mechanism that does not have the above.

According to the movable contactor support mechanism of the fifth aspect of the invention, the movable contactor support mechanism is provided with the element of the fourth aspect of the invention, and the height (thickness) dimension d of the movable contactor of the portion engaging with the spring receiver is set. ,
Since the height c of the wide portion partially widened at the opening of the crossbar and the height f of the starting end of the wide portion are configured to be larger than the combined value, the spring bearing is not inclined. In addition, since the spring receiver and the contact spring can be inserted into the opening of the crossbar and assembled without shrinking the contact spring to a small size, the assembling work becomes easy, and the assembly required in the conventional example of this kind is required. Since no skill is required and the assembling work can be simplified, it can be automated by a machine and an inexpensive movable contact support mechanism can be obtained. The movable contact does not get caught and the operation is smooth, and even if the movable contact is not inserted into the opening of the crossbar during the intermediate assembly work, the spring retainer can be pulled out from the opening of the crossbar. An excellent effect such as can be provided a movable contactor supporting mechanism no.

According to the movable contact support mechanism of the sixth invention, the movable contact support mechanism is provided with the elements of the fourth or fifth invention, and the narrow width portion and the wide width portion of the spring receiver are provided on both sides of the opening of the crossbar. The ribs are narrower than the diagonal dimension of the crossbar and wider than the wide part of the spring receiver.Therefore, do not tilt the spring receiver, and do not shrink the contact spring to a small extent. The spring receiver and the contact spring can be inserted into the opening for assembly, and since the spring receiver does not rotate in the opening of the crossbar after insertion, the assembling work becomes easy, and this type of conventional Since the skill required for the assembly work, which was required in the example, is not necessary and the assembly work can be simplified, a mechanical contact can be automated and an inexpensive movable contactor support mechanism can be obtained. Possible on the stepped part of the opening Contact is smooth operation without causing snagging, further, in the middle of assembly operation,
Even if the movable contact is not inserted into the opening of the crossbar, the movable contact supporting mechanism can be provided in which the spring receiver does not slip out of the opening of the crossbar.

According to the movable contact support mechanism of the seventh aspect of the invention, the spring receiver biased by the contact spring in the opening of the crossbar that is attracted by the magnetic force to move, and the edge of the opening of the crossbar. In the case where a movable contactor is sandwiched between and, the opening of the crossbar is U used on the contact spring side.
Ribs are formed on both sides of the opening of the crossbar, narrower than the diagonal dimension of the narrow width and wide width of the spring receiver, and wider than the wide width of the spring bearing. Each U-shaped tip portion of the portion is fixed by a claw portion that engages with the concave portion of each U-shaped tip portion to sandwich each tip portion, and a stopper provided with a seat portion that receives a contact spring. Since it is configured as described above, the spring receiver and the contact spring can be assembled by inserting the spring receiver and the contact spring into the opening of the crossbar without tilting the spring receiver and shrinking the contact spring to a small extent. Since it does not rotate in the opening of the bar, the assembling work is facilitated, the assembling work required in the conventional example of this kind is not required, and the assembling work is simplified. Because it is possible, it can be automated by a machine and is inexpensive and movable. A tentacle support mechanism is provided, and the operation is smooth without the movable contact catching on the stepped portion of the crossbar opening.Furthermore, in the intermediate assembly work, the movable contact is moved into the opening of the crossbar. Even if the child is not inserted, it is possible to provide a movable contact support mechanism in which the spring receiver does not slip out of the opening of the crossbar, and other excellent effects can be provided.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention.

FIG. 3 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention.

FIG. 4 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention.

FIG. 5 is an exploded perspective view showing an enlarged main part of a crossbar portion used in an electromagnetic switch according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a half of a side surface of a conventional electromagnetic switch, cut away.

FIG. 7 is an explanatory view showing an enlarged main part of a crossbar portion when a contact spring is inserted in a conventional electromagnetic switch.

[Explanation of symbols]

 1 Mounting Base 2 Case 3 Excitation Coil 4 Fixed Iron Core 5 Movable Iron Core 6 Crossbar 6a Window (Opening) 6b Protrusion 6c Wide Width 6d Rib 6e Recess 7 Contact Spring 8 Movable Contact 8a Moving Contact 8b Moving Contact 9 Fixed Contact Child 9a Fixed contact 10 Fixed contact Child 10a Fixed contact 11 Spring receiver 11a Ear portion 11b Ear portion 12 Stopper 12a Claw portion 12b Seat portion

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[Procedure amendment]

[Submission date] March 12, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 7]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

Claims (7)

[Claims] 1. A crossbar which is attracted by a magnetic force to move and is provided with an opening, a biasing force is applied by a contact spring, and a spring receiver having a sliding part that slides on the crossbar, and an opening of the opening. In the movable contact support mechanism for sandwiching the movable contact with the edge portion, the opening of the crossbar has a wide portion that widens on the side that biases the movable contact, and the height of the wide portion is increased. The height dimension of the two ears of the spring receiver that slides with the crossbar is different from each other, and the height dimension of one of the two ears is a and the height of the other ear is a. Assuming that the height dimension is b, the height dimension of each of a, b, and c is a>c> b.
A movable contact support mechanism characterized by being configured so that 2. The height (thickness) dimension d of the movable contactor that engages with the spring receiver is set larger than the height dimension c of the wide portion where the opening of the crossbar is widened. The movable contact support mechanism according to claim 1, wherein: 3. A structure in which ribs are provided on both sides of the opening of the crossbar, the ribs being narrower than the diagonal dimension of the narrow width portion and the wide width portion of the spring receiver and wider than the wide width portion of the spring receiver. The movable contact support mechanism according to claim 1 or 2, characterized in that. 4. A crossbar that is attracted by a magnetic force to move is provided with an opening, a spring is provided with a sliding portion that is biased by a contact spring, and slides with the crossbar, and an opening of the opening. In the movable contact support mechanism for sandwiching the movable contact with the edge, the opening of the crossbar has a wide portion that is partially widened on the side that biases the movable contact. Is defined as c and the height at the end of the wide portion where the opening is partially widened is defined as f, and the two ears of the spring receiver that slide with the crossbar are The heights are different from each other, and the height of one of the two ears is a and the height of the other is b, and the ears are connected by a narrow portion at the center. When the height of the narrow part on both ends of each ear is e, a,
The height dimensions of b, c, e, and f are a>c> b and f
A movable contact support mechanism characterized by having a relationship of> e. 5. The height (thickness) dimension d of the movable contact at the portion that engages with the spring receiver is set to c that is the height dimension of the wide portion that partially expands in the opening of the crossbar. The movable contactor support mechanism according to claim 4, wherein the movable contactor support mechanism is configured to be larger than a value obtained by combining the height dimension f of the beginning of the wide width portion. 6. A structure in which ribs are provided on both sides of the opening of the crossbar at a distance narrower than a diagonal dimension between the narrow width portion and the wide width portion of the spring receiver and wider than the wide width portion of the spring receiver. The movable contact support mechanism according to claim 4 or 5, characterized in that. 7. A crossbar which is attracted by a magnetic force to move and is provided with an opening, a biasing force is applied by a contact spring, and a spring receiver having a sliding part that slides on the crossbar, and the opening of the opening. In the movable contact support mechanism for sandwiching the movable contact between the edge and the edge, the opening of the crossbar has a U-shape opened on the side of the contact spring, and the opening is formed on both sides of the opening of the crossbar. Ribs are provided at a distance smaller than the diagonal dimension of the narrow width portion and the wide width portion of the spring receiver and wider than the wide width portion of the spring receiver. Further, each U-shaped tip of the opening is It is configured to be fixed by a claw portion that engages with the recessed portion provided at each U-shaped tip end portion and sandwiches each tip end portion with a stopper provided with a seat portion that receives the contact spring. Characteristic movable contact support mechanism.