KR20120123544A - Holder for an electromagnetic switching device - Google Patents

Abstract

The present invention relates to a holder for holding a contact element in an electromagnet switching device, wherein the holder has a first closed frame (23) having a first end (29) and a second end (31). A compressive material 47 disposed within the frame at one end 29, wherein the contact element 3 is removably received between the compressible material 47 and the second end 31, and the frame 23. The second end 31 and the first end 29 of are opposed.

Description

Holder for electromagnet switching device {HOLDER FOR AN ELECTROMAGNETIC SWITCHING DEVICE}

The present invention relates to a holder for holding a contact element in an electromagnet switching device.

Electromagnet switching devices are typically used to control the flow of current in an electrical circuit. The electromagnet switching device is controllable for switching between on and off states for closing and interrupting the power supply circuit. The electromagnet switching device can be controlled manually or electrically. In order to electrically control the electromagnet switching device, magnets can be employed to actuate a movable contact element to close and shut off the power supply circuit.

Typically, the movable contact element is moved to engage a fixed contact element for closing the power supply circuit. The fixed contact element is electrically connected to the power supply. Thus, the power supply circuit is closed when the movable contact element is engaged with the stationary contact element.

It is an object of embodiments of the present invention to allow different types of compressible materials to be used for deflection of contact elements of an electromagnet switching device.

The object is achieved by a holder for holding a contact element in an electromagnet switching device according to claim 1.

The frame of the holder is closed around and thus the frame is closed on all sides. The compressible material may be disposed inside the frame at the first end of the frame such that the frame surrounds the compressible material. The surface of the first end on which the compressible material is disposed may be substantially planar, such that various sizes and types of compressible material may be disposed on the first end of the frame. The contact element is removably received between the compressible material and the second end. The second end is opposite the first end. The compressible material applies a biasing force on the contact element. Thus, an electromagnet switching device comprising a holder can be applied for use for controlling a wide range of supply power by replacing the compressible material according to the desired deflection force on the contact element.

According to yet another embodiment, the frame is formed of a single piece of material. The frame is formed of a single piece, ie the frame is made using a single piece of material. Thus, the frame comprises only a single member and offers the advantage of easy detachment of the contact element 3 when no part of the frame is separated or removed. In addition, forming a frame using a single piece of material allows for easy manufacture of the frame.

According to yet another embodiment, the frame comprises first and second legs at both sides of the compressible material, the first and second legs being connected to the first and second ends. For example, the first leg may be on one side and the second leg may be on the other side of the compressible material.

According to another embodiment, the first leg and the second leg are parallel. In one aspect, the first leg and the second leg may be parallel to each other. Advantageously, the first leg and the second leg can be connected to the first end and the second end to form a rectangular cross section. Thus, the first end and the second end connected by the legs form a closed frame.

According to yet another embodiment, the first end is formed by a first portion extending from the first leg through the first bend and a second portion extending from the second leg via the second bend, wherein the first portion and the first portion are formed. Two parts overlap. The first leg may be bent to form a first portion through the first bend and the second leg may be bent to form a second portion through the second bend. Advantageously, the first bend and the second bend allow the first portion to be substantially perpendicular to the first leg and the second portion to be substantially perpendicular to the second leg.

According to yet another embodiment, the frame further comprises a third portion extending from the first portion through the third bend, the third portion overlapping the portion of the second leg. In one embodiment, the third portion is formed by bending the first portion at the third bend. The third portion overlaps the second leg to provide additional stiffness at the first end.

According to yet another embodiment, the second end is formed by a transverse section in which the first leg and the second leg are joined. For example, the transverse section may be a U-shaped cross section combining the parallel legs.

According to yet another embodiment, the second end further comprises a ridge extending inwardly to support the contact element. The ridge supports the contact element when the contact element is positioned inside the frame.

According to yet another embodiment, the compressible material is selected from the group consisting of springs and elastomers. In one aspect, springs of various sizes and shapes may be disposed at the first end. In another embodiment, elastomers of various sizes may be disposed at the first end. Thus, a spring, elastomer or any elastic material or various sizes and shapes can be disposed at the first end.

Yet another embodiment includes a carrier operable to shut off and close a power supply circuit in an electromagnet switching device comprising a holder for holding a contact element, the carrier having a socket, a compressible material for movably receiving the holder. And a shoulder formed on the socket to act on the frame, the frame being displaceable with respect to the action of the compressible material to separate the contact element. The contact element may be easily detachable from the holder when the contact element is replaced.

Yet another embodiment includes an electromagnet switching device comprising a holder for holding a contact element.

Embodiments of the invention are now further described with reference to the embodiments shown in the accompanying drawings.

1A shows a carriage of an electromagnet switching device according to one embodiment.
FIG. 1B shows the assembly of the carrier 1 and the electromagnet system of FIG. 1A according to one embodiment.
2A shows details of a holder according to one embodiment.
FIG. 2B is a side view of the holder 21 of FIG. 2A shown along the direction X according to one embodiment.
3 shows a holder holding a contact element according to an embodiment.
4 shows a cross-sectional view of the carrier 1 of FIG. 1A along plane II.

Various embodiments are described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident that such embodiments may be practiced without these specific details.

Referring to FIG. 1A, a carrier 1 of an electromagnet switching device is shown according to an embodiment. The contact element 3 is supported in the carrier to move from the circuit break position to the circuit closed position, and the contact element 3 moves to contact the fixed contact element to be in the circuit closed position. The fixed contact can be connected to the input power supply.

FIG. 1B shows the assembly of the carrier 1 and the electromagnet system of FIG. 1A according to an embodiment here. In the illustrated example of FIG. 1B, the carrier 1 comprises a column 7 extending vertically upwards. The electromagnet system 8 is supported on the column 7 to operate the carrier. In the present embodiment, the electromagnet system 8 is shown to include electromagnet armatures 9, 13. However, the electromagnet system 8 can be designed in another way that includes fewer or more electromagnet armatures. Typically, the electromagnet armatures 9, 13 are configured to actuate the carrier 1. The electromagnet armature 9 engages the column 7 via a member 11 for transmitting the armature 9 motion to the carrier 1. The carrier 1 in turn moves the contact element 3 into the circuit closed position. In the illustrated example of FIG. 1B, the electromagnet armature 9 mechanically engages the column via member 11. However, the electromagnet armature 9 is engaged with the column 7 using other known mechanical means. Another electromagnet armature 13 comprising a coil 17 is also supported on the column 7. In the illustrated example of FIG. 1B two coils 17 are shown. However, in some implementations the magnet armature may comprise only a single coil 17. The coil 17 is energized by supplying a current provided by a supply source. On the coil 17 to be excited, the electromagnet armature 9 is pulled towards the electromagnet armature 13. This movement of the armature 9 is transmitted to the carrier 1 and to the contact element 3 for the circuit closing movement. However, in other embodiments, the carrier 1 may comprise a column extending vertically downward and an electromagnet armature 9 and the electromagnet armature 13 may be supported on the column.

The contact element 3 is supported in a socket 19 extending from the bottom of the carrier 1. The socket 19 receives a holder 21 for holding the contact element 3 so that the holder 21 is movable in the socket 19.

2A shows the holder 21 in detail in accordance with an embodiment herein. The holder 21 comprises a frame 23 comprising a second leg 27 and a first leg 25, a first end 29 and a second end 31 on two opposing sides. In the illustrated embodiment of FIG. 2, the first leg 25 and the second leg 27 are advantageously parallel to each other and connected to the first end 29 and the second end 31. In an alternative embodiment, the first leg 25 and the second leg 27 may be connected to the first end 29 and the second end 31 such that the first leg 25 and the second leg 27 are provided. ) May not be parallel to each other.

Advantageously, frame 23 may be formed using a single piece of material. For example, the frame 23 is formed using a single piece of material, and the perimeter can be closed. Thus, when no part of the frame is separated or removed, the frame comprises only a single part and offers the advantage of easy separation of the contact element 3. For example, a single piece of material may be bent to form the first leg 25 and the second leg 27 and the first end 29 and the second end 31. In one embodiment, the frame 23 may comprise a rectangular cross section. The formation of the frame 23 using a single piece of material enables easy manufacture of the frame 23. In one embodiment, the second end 31 may be formed of a transverse section 33 that joins the first leg 25 and the second leg 27. For example, the transverse section 33 may comprise a U-shaped cross section. In one embodiment, the first end 29 may be formed by overlapping a portion of the second portion 37 with the first portion 35. The first portion 35 may extend from the first leg 25 through the first bend 41 and the second portion may extend from the second leg 27 through the second bend 43. have. Advantageously, the bends 41, 43 allow the first portion 35 and the second portion 37 to be substantially perpendicular to the first leg 25 and the second leg 27, respectively.

In one embodiment, one of the portions 35, 37 may include a third portion extending through the third bend to overlap with the portion of the other leg. For example, the third portion 39 may extend from the first portion 35 through the third bend 45 and may overlap with the portion of the second leg 27. For example, the third bend 45 allows the third portion to be substantially perpendicular to the first portion 35. A third portion 39 overlapping the second leg 27 provides additional stiffness to the first end 29. In an alternative embodiment, the first end 29 can be formed by a transverse section joining the legs 25, 27 and the second end 31 is from the first leg 25 and the second leg. The portions extending through the bends can be formed by overlapping.

In another embodiment, the first end 29 and the second end 31 may be formed by transverse sections joining the legs 25, 27. However, in the case where the first end 29 and the second end 31 are transverse sections, the end of the frame 23 with its perimeter closed can be coupled to either of the legs 25, 27. For example, by overlapping each other, the ends of the frame 23 can be joined at either of the legs 25, 27.

In one embodiment, compressible material 47 is disposed inside frame 23 at first end 29. Advantageously, the surface of the first end 29 on which the compressible material 47 is disposed is substantially flat. In one embodiment, the flat surface of the first end 29 with the compressive material 47 disposed thereon may be substantially even or flat. In yet another embodiment, the flat surface of the first end 29 on which the compressible material 47 is disposed may be pleated or uneven. For example, corrugation may be designed such that additional grips are provided to the compressible material 47.

The flat surface allows different sizes of compressible material to be disposed at the first end 29. In one embodiment, compressible material 47 may be a spring, such as a helical spring. When the surface of the first end 29 is substantially flat, helical springs formed of wires of different thickness may be disposed inside the frame 23. The flat surface of the first end 29 can accommodate springs formed of wires of different thickness. In the second embodiment, the compressible material 47 may be another material having elastic properties or may be an elastomer. Thus, the first substantially flat end 29 allows different kinds of compressible material of different thicknesses to be placed inside the frame 23 of the holder 21.

When different sizes of compressible material can be disposed at the first end 29, the electromagnet switch can be configured to be used to control a wide range of supply power by replacing the compressible material. Compressible material can be replaced to increase or decrease the contact pressure applied onto the contact element 3. For example, a compressible material capable of applying a relatively high deflection increases the contact pressure applied on the contact element 5. Thus, the contact element 5 can be varied by using different compressible materials for different deflection conditions of the pressure engaged with the fixed contact element.

FIG. 2B shows a side view of the holder 21 of FIG. 2A shown along the direction X according to one embodiment. The frame 23 includes a ridge 49 extending inwardly from the second end 31 of the frame 23. The ridge 49 supports the contact element 3 of FIG. 2A when the contact element 3 is positioned inside the frame 23.

3 shows a holder 21 for holding the contact element 3 according to one embodiment. The contact element 3 is removably received between the compressive material 47 and the second end 31 of the frame 23 of the holder 21. The contact element 3 is held between the second end 31 of the frame 23 and the compressible material 47. The contact element 3 is deflected by the compressible material 47 so that the contact element 3 is held between the second end 31 of the frame and the compressive material 47. The ridge 49 of FIG. 2B engages the contact element 3 to support the contact element 3 in the frame 23. Advantageously, the ridge 49 can pivotally support the contact element 3.

4 shows a cross-sectional view of the carrier 1 of FIG. 1A according to plane II. The holder 21 is movably received in the socket 19. The socket 19 includes a pair of shoulders 51 and 53 for providing reverse support to the compressible material 47. When shoulders 51 and 53 block compressible material 47, frame 23 of holder 21 is displaceable with respect to actuation of compressible material 47. This makes it easy to detach the contact element 3 from the socket 19. Moreover, the detachment of the contact element 3 from the socket 19 does not require any removal of the holder 21 or part of the carrier 1. In addition, the detachment of the contact element 3 from the socket 19 does not require the use of any tools.

For example, when a force is applied onto the bottom of the holder 11, the compressible material 47 is blocked by the shoulders 51, 53 and the holder 21 is displaced relative to the actuation of the compressible material 47. . Thus, the contact material 3 can be easily separated from the socket 19. Moreover, no tool is required for the detachment of the contact element 3 from the socket 19. This makes the contact element 3 easily detachable.

Embodiments described herein allow other types of compressible materials to be used to deflect contact elements of an electromagnet switching device. Moreover, compressible material of altered size may also be disposed inside the frame of the holder. In addition, it is possible to allow the electromagnet switching device to be used for controlling a wide range of supply power by replacing the compressible material according to the desired biasing force on the contact element. Preferred deflection forces can be obtained by using suitable compressible materials. Thus, the biasing force applied on the contact element can be changed to change the contact pressure of the contact element depending on the power rating at which the electromagnet switching device is used. Moreover, forming a frame using a single piece of material allows for easy manufacture of the frame. In addition, the contact element can be easily separated from the socket of the carrier without the requirement of any special tool. This helps the easy replacement of the contact element.

While the invention has been described in detail with reference to certain preferred embodiments, it should be understood that the invention is not limited to the specific embodiments. Rather, in view of the present disclosure which describes the current best mode for carrying out the present invention, many modifications and variations can be made to those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is indicated by the following claims rather than by the foregoing description. All changes, modifications and variations within the scope and spirit of the equivalents of the claims are to be considered within the scope of the claims.

Claims (11)

As a holder 21 for holding the contact element 3 in the electromagnet switching device,
A perimeter closed frame 23 having a first end 29 and a second end 31,
A compressible material 47 disposed inside the frame at the first end of the frame 23,
The contact element 3 is removably received between the compressible material 47 and the second end 31, with the second end 31 of the frame 23 facing the first end 29. ,
Holder for holding a contact element in the electromagnet switching device.
The method of claim 1,
The frame 23 is formed of a single piece of material,
Holder for holding a contact element in the electromagnet switching device.
The method according to claim 1 or 2,
The frame 23 comprises a first leg 25 and a second leg 27 on both sides of the compressible material, and the first leg 25 and the second leg 27 are connected to the first end ( 29) and the second end 31,
Holder for holding a contact element in the electromagnet switching device.
The method of claim 3, wherein
The first leg 25 and the second leg 27 are parallel,
Holder for holding a contact element in the electromagnet switching device.
The method according to claim 3 or 4,
The first end 29 extends from the second leg 27 through the first portion 35 and the second bend 43 extending from the first leg 25 via the first bend 41. Formed by the second portion 37, wherein the first portion 35 and the second portion 37 overlap,
Holder for holding a contact element in the electromagnet switching device.
The method of claim 5, wherein
The frame further comprises a third portion 39 extending from the first portion 35 through a third bend 45, wherein the third portion 39 is connected to the portion of the second leg 27. Overlapping,
Holder for holding a contact element in the electromagnet switching device.
The method according to any one of claims 3 to 6,
The second end 31 is formed by a transverse section 33 connecting with the first leg 25 and the second leg 27,
Holder for holding a contact element in the electromagnet switching device.
8. The method according to any one of claims 3 to 7,
The second end 31 comprises a ridge 49 extending inwardly to support the contact element 3,
Holder for holding a contact element in the electromagnet switching device.
The method according to any one of claims 1 to 8,
The compressible material 47 is selected from the group consisting of elastomers and springs,
Holder for holding a contact element in the electromagnet switching device.
As a carrier (1) operative to close and shut off the power supply circuit in an electromagnet switching device,
A holder 21 for holding a contact element 3 according to any of the preceding claims,
The carrier 1 is:
A socket 19 for receiving the holder 21 in motion,
A shoulder (51, 53) formed on the socket (19) acting in correspondence with the compressible material (47),
The frame 23 can be replaced for operation of the compressible material 47 to separate the contact element 3,
Carrier operative to close and shut off the power supply circuit in the electromagnet switching device.
Electromagnet switching device,
A holder 21 for holding the contact element 3 according to claim 1,
Electromagnet switching device.

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