KR20170072727A - Electro magnetic contector - Google Patents

Electro magnetic contector Download PDF

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Publication number
KR20170072727A
KR20170072727A KR1020150181244A KR20150181244A KR20170072727A KR 20170072727 A KR20170072727 A KR 20170072727A KR 1020150181244 A KR1020150181244 A KR 1020150181244A KR 20150181244 A KR20150181244 A KR 20150181244A KR 20170072727 A KR20170072727 A KR 20170072727A
Authority
KR
South Korea
Prior art keywords
spring
upper frame
fitted
crossbar
cross bar
Prior art date
Application number
KR1020150181244A
Other languages
Korean (ko)
Inventor
이영호
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020150181244A priority Critical patent/KR20170072727A/en
Publication of KR20170072727A publication Critical patent/KR20170072727A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/045—Details particular to contactors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The present invention has the effect of providing a cushioning member in the crossbar or the upper frame, and mitigating the impact of collision between the crossbar and the upper frame through the cushioning member, thereby preventing a portion of the crossbar or the upper frame from being broken.

Description

[0001] ELECTRO MAGNETIC CONTACTOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic contactor, and more particularly, to an electromagnetic contactor which prevents a break due to a collision between an upper frame and a crossbar by providing a buffer member on an upper frame or a crossbar constituting an electromagnetic contactor.

Generally, an electromagnetic contactor is a power device used to turn on / off a motor.

The magnetic contactor turns on / off the motor by using a principle that a magnetic field is generated around the core when a coil is wound around an inner core to generate a suction force. The electromagnetic contactor is mechanically turned on / off When the core is sucked, the contact is pulled to turn on the motor. On the other hand, when the core is turned off, the contact is mechanically turned off when the suction force is extinguished by using the repulsive force of the return spring inside the electromagnetic contactor.

Meanwhile, FIG. 1 shows a conventional electromagnetic contactor constructed as described above. 1, the conventional electromagnetic contactor constitutes the outer shape of the electromagnetic contactor by the upper frame 1 and the lower frame 2. The upper frame 1 is provided with a power supply side of the electric circuit and a load side terminal And a plurality of fixed contacts 3 connected to the fixed contacts 3 are formed.

A bobbin coil 4 for generating a magnetic force in accordance with application of power is provided in an inner space formed by the upper frame 1 and the lower frame 2. A bobbin coil 4 4 are magnetized in accordance with the generation of magnetic force.

A movable core 6 is provided at an upper portion of the stationary core 5 to move up and down according to the generation of magnetic force and the magnetic force disappearance. A movable core 6 is provided between the bobbin coil 4 and the movable core 6 A rebound spring 7 for providing a restoring force is provided.

A cross bar 8 is provided on the movable core 6 to move up and down together with the movable core 6. The cross bar 8 is provided with a movable contact 6 9 are installed.

When the current is applied to the bobbin coil 4, the bobbin coil 4 is excited so that the fixed core 5 installed at the lower portion thereof is magnetized.

The movable core 6 provided on the upper portion of the fixed core 5 is brought close to the fixed core 5 by the magnetic force of the magnetized fixed core 5 and the crossbar 8 coupled with the movable core 6, So that the rebound springs 7 are compressed and descended.

As a result, the plurality of movable contactors 9 provided on the cross bar 8 are brought into contact with the fixed contacts 3 fixed to the upper frame 1, so that the circuit is in the energized state. Conversely, when the magnetic force of the bobbin coil 4 is lost The movable core 6 is separated from the fixed core 5 by the above-mentioned reverse order to be in a cut-off state.

In the case of the conventional electromagnetic contactor constructed as described above, when the magnetic force of the bobbin coil 4 is lost, the cross bar 8 is moved toward the upper frame 1 due to the repulsive force of the rebound spring 7, The crossbar 8 or the upper frame 1 may be damaged due to such a collision when the upper frame 1 is used for a long period of time.

Also, when the cross bar 8 or the upper frame 1 is broken, a malfunction of the electromagnetic contactor is frequently caused, and the current carrying capability of the electromagnetic contactor is remarkably deteriorated.

Further, when the cross bar 8 or the upper frame 1 is broken, the material constituting the broken portion is accumulated in the inside of the electromagnetic contactor, and the electrification performance of the electromagnetic contactor is remarkably lowered.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and provides an electromagnetic contactor which prevents a break due to a collision between an upper frame and a cross bar by providing a buffer member on an upper frame or a cross bar constituting an electromagnetic contactor, There is a purpose.

The above-described object of the present invention can be achieved by an image forming apparatus comprising: an upper frame; A lower frame fitted to the upper frame; And a crossbar provided between the upper frame and the lower frame for moving the movable contact and the stationary contactor in accordance with whether a current is applied to the movable contact and the fixed contactor, And a cushioning member for relieving the impact caused by the collision with the frame is provided.

Further, the buffer member is a spring.

And a spring-fitted portion is formed on an upper surface of the cross bar so that the spring is inserted.

Another object of the present invention is to provide an image forming apparatus comprising: an upper frame; A lower frame fitted to the upper frame; And a crossbar provided between the upper frame and the lower frame for moving the movable contact and the fixed contact by moving according to whether current is applied thereto, And a cushioning member for relieving an impact due to the collision with the crossbar.

Further, the buffer member is a spring.

In addition, a spring-fitted portion is formed inside the upper portion of the upper frame to fit the spring.

In addition, the spring-fitting portion narrows in width from the both sides toward the central portion so that one end of the spring is fitted to the center portion of the spring-fitted portion.

In addition, in the vicinity of the spring-fitted portion, a release-preventing member is provided to wrap the spring-fitted portion. When the spring is fitted in the center of the spring-fitted portion, .

And the buffer member is formed of a rubber member.

Further, the rubber member is formed with a space portion opened to the side surface and the bottom surface, and is fitted to the upper surface of the cross bar through the space portion.

Further, the rubber member is formed in a rectangular shape, and the lower surface of the rubber member is tightly fixed to the upper surface of the cross bar.

And the rubber member is formed to protrude upward from the upper surface of the cross bar.

And one end of the rubber member on the side of the upper frame is convexly formed.

And the buffer member is a sponge.

As described above, the electromagnetic contactor of the present invention has the effect of providing a cushioning member in the crossbar or the upper frame, and mitigating the impact of the crossbar and the upper frame through the cushioning member when the crossbar collides with the upper frame, have.

In addition, there is an effect of preventing malfunction of the electromagnetic contactor due to breakage of parts by preventing breakage of the cross bar or the upper frame.

Further, since the malfunction of the electromagnetic contactor is prevented, the electrification performance of the electromagnetic contactor is improved.

In addition, since the breakage of the cross bar or the upper frame is prevented, breakage of the breaker can be prevented from being accumulated in the inside of the electromagnetic contactor.

1 is a schematic structural view showing a conventional electromagnetic contactor;
2 is a side view showing a crossbar provided in a conventional electromagnetic contactor;
3 is a side view showing a crossbar provided in the electromagnetic contactor according to the first embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view illustrating a state where a crossbar provided in an electromagnetic contactor according to a first embodiment of the present invention is provided in an upper frame. FIG.
5 is a side view showing a crossbar provided in the electromagnetic contactor according to the second embodiment of the present invention.
6 is a side sectional view showing an upper frame constituting an electromagnetic contactor according to a third embodiment of the present invention.
7 is a side sectional view showing an upper frame constituting an electromagnetic contactor according to a fourth embodiment of the present invention.
8 (a) is a side view showing a state in which a rubber member is fitted in a cross bar constituting the electromagnetic contactor according to the fifth embodiment of the present invention.
8 (b) is a perspective view showing a rubber member fitted in a cross bar constituting the electromagnetic contactor according to the fifth embodiment of the present invention.
9 is a side view showing a crossbar constituting an electromagnetic contactor according to a sixth embodiment of the present invention.
10 is a side view showing a crossbar constituting an electromagnetic contactor according to a seventh embodiment of the present invention.

Hereinafter, an electromagnetic contactor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a side view showing a crossbar provided in the electromagnetic contactor according to the first embodiment of the present invention, FIG. 4 is a cross-sectional view of the crossbar provided in the upper frame of the electromagnetic contactor according to the first embodiment of the present invention, And FIG. 5 is a side view showing a crossbar provided in the electromagnetic contactor according to the second embodiment of the present invention.

6 is a side sectional view showing an upper frame constituting an electromagnetic contactor according to a third embodiment of the present invention, and Fig. 7 is a side sectional view showing an upper frame constituting an electromagnetic contactor according to a fourth embodiment of the present invention 8A is a side view showing a state in which a rubber member is fitted to a cross bar constituting an electromagnetic contactor according to a fifth embodiment of the present invention, Fig. 4 is a perspective view showing a rubber member fitted in a cross bar constituting the cross bar.

9 is a side view showing a crossbar constituting the electromagnetic contactor according to the sixth embodiment of the present invention, and Fig. 10 is a side view showing a crossbar constituting the electromagnetic contactor according to the seventh embodiment of the present invention.

3 and 4, the electromagnetic contactor 100 according to the present invention includes an upper frame 110, a lower frame (not shown) to be fitted to the lower side of the upper frame 110, And a cross bar 130 which is provided between the lower frame 110 and the lower frame to turn on and off the movable contactor 120 and the stationary contactor (not shown) while vertically moving according to whether current is applied or the like.

When the applied current is removed, the crossbar 130 moves upward by a repulsive spring (not shown) to separate the movable contactor 120 from the fixed contactor, and the crossbar 130 hits the upper frame 110 and ends the movement.

At this time, when the crossbar 130 moves and collides with the upper frame 110, a portion of the crossbar 130 or the upper frame 110 is broken due to an impact due to the collision. And a cushioning member 150 for relieving an impact caused by collision with the upper frame 110 when the crossbar 130 is moved.

The cushion member 170 is formed on the upper surface of the cross bar 130 so that the spring 150 is inserted into the cushion member 150.

The spring fitting portion 170 is formed on the upper surface of the cross bar 130 and gradually narrows in width toward the center portion 171 so that one end of the spring 150 is fitted to the center portion 171 The other end of the spring 150 is brought into contact with the upper frame 110 in accordance with the movement of the cross bar 130 in the upper frame 110, So that the impact due to the collision is prevented and the spring 150 is prevented from being released in the other direction.

5, the crossbar 130 provided on the electromagnetic contactor 100 according to the second embodiment of the present invention may be provided on the upper surface of the crossbar 130 in a direction other than the spring- The release preventing member 180 may be further formed.

The release preventing member 180 is positioned to be spaced apart from the spring fitting portion 170 by a predetermined distance and surrounds the spring fitting portion 170 in a cylindrical shape.

Since the release preventing member 180 is positioned at a predetermined distance from the spring fitting portion 170, a certain space is formed between the release preventing member 180 and the spring fitting portion 170, The spring 150 is positioned between the spring fitting portion 170 and the release preventing member 180 in a state where the spring 150 is fitted in the spring fitting portion 170.

Therefore, when the spring 150 having one end inserted into the spring fitting part 170 moves upward as the crossbar 130 moves, and the other end thereof abuts on the upper inner surface of the upper frame 110, The impact caused by the collision between the crossbar 130 and the upper frame 110 is alleviated through the through-hole 150.

At the same time, the spring 150 is prevented from being diverted in the other direction through the spring fitting part 170 and the release preventing member 180.

Meanwhile, as shown in FIG. 6, a buffer member 250 may be provided inside the upper part of the upper frame 110 of the electromagnetic contactor 100 according to the third embodiment of the present invention.

The buffer member 250 is composed of a spring 150 having elasticity and a sponge. The spring frame 270 is provided on the upper portion of the upper frame 110 so that the spring 150 is inserted and fixed.

At this time, the spring fitting portion 270 is formed to be narrower toward the central portion 271 so that one end of the spring 150 is fitted to the center portion 271, so that the spring 150 is inserted into the spring fitting portion 270 As shown in Fig.

Therefore, when the crossbar 130 and the upper frame 110 collide with the crossbar 130 in a state where the spring 150 is positioned on the upper inner surface of the upper frame 110, do.

7, in the upper frame 110 constituting the electromagnetic contactor 100 according to the fourth embodiment of the present invention, the spring-fitted portion 270 and the spring- A release preventing member 280 may be provided to prevent the spring 150 from being released in the other direction.

The release preventing member 280 is positioned to be spaced apart from the spring fitting part 270 by a predetermined distance so as to surround the spring fitting part 270 and has a cylindrical shape. Thereby preventing the spring 150 from being detached in the other direction when the spring 150 is collided.

8A and 8B, the cross bar 130 may be provided with a rubber member 190 as the buffer member 190. As shown in FIGS.

The rubber member 190 is formed with a space 191 such that the side surface and the bottom surface are opened so that one side of the cross bar 130 is fitted into the space 191, As shown in Fig.

Since the upper surface of the rubber member 190 is positioned on the upper surface of the cross bar 130 so that the cross bar 130 moves upward and comes into contact with the upper inner surface of the upper frame 110, 190 to mitigate the impact of the collision.

In addition, as shown in FIG. 9, the rubber member 290 may not be fitted to the cross bar 130 but may have a rectangular shape and may be fixedly mounted on the upper surface of the cross bar 130.

If the rubber member 290 is simply formed in a rectangular shape, the manufacturing and bonding can be facilitated and the space occupied by the rubber member 290 can be reduced.

10, a plurality of the rubber members 390 may be formed so as to protrude in a protrusion shape, and one end of the rubber member 390 on the side of the upper frame 110 may have a convex shape, So that the impact can be easily absorbed when one end of the rubber member 390 comes into contact with the upper frame 110.

In the present invention having the above-described structure, a buffer member having elasticity such as springs (150, 250), rubber members (190, 290, 390) and sponge is provided on the crossbar 130 or the upper frame 110, Thereby preventing a portion of the crossbar 130 or the upper frame 110 from being damaged due to the collision by mitigating the impact of the collision between the crossbar 130 and the upper frame 110 through the through-

In addition, since the crossbar 130 and the upper frame 110 are prevented from being damaged by the collision, the electromagnetic contactor 100 is prevented from malfunctioning frequently due to breakage of components constituting the electromagnetic contactor 100. [

In addition, since the electromagnetic contactor 100 is prevented from malfunctioning, not only the energizing performance of the electromagnetic contactor 100 can be improved, but also the breakage caused by the breakage of the crossbar 130 and the upper frame 110 can be prevented. Thereby preventing the electrification performance of the electromagnetic contactor 100 from being deteriorated.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the above description does not limit the scope of the present invention defined by the limitations of the following claims.

1: upper frame 2: lower frame
3: Fixed contactor 4: Bobbin coil
5: stationary core 6: movable core
7: return spring 8: crossbar
9: movable contactor 100: magnetic contactor
110: upper frame 120: movable contact
130: crossbar 150, 250: spring
170, 270: a spring-fitted portion 171:
180, 280: release preventing member 190, 290, 390: rubber member
191: Space section

Claims (16)

An upper frame; A lower frame fitted to the upper frame; And a crossbar provided between the upper frame and the lower frame for turning on and off the movable contactor and the fixed contactor according to whether current is applied,
And a cushioning member is provided on an upper portion of the crossbar. The method according to claim 1,
And the buffer member is a spring. 3. The method of claim 2,
And a spring-fitted portion is formed on an upper surface of the cross bar so that the spring is inserted. The method of claim 3,
Wherein the spring-fitted portion is narrowed in width from both sides to a central portion, so that one end of the spring is fitted to the center portion of the spring-fitted portion. 5. The method of claim 4,
And a release preventing member is provided in the vicinity of the spring fitting portion to wrap the spring fitting portion,
Wherein the spring is prevented from being released from contact with the upper frame through the release preventing member when one end of the spring is fitted in the center of the spring fitting portion. The method according to claim 1,
Wherein the buffer member is made of a rubber member. The method according to claim 6,
Wherein the rubber member is formed with a space portion opened to the side surface and the bottom surface, and is fitted to the upper surface of the cross bar through the space portion. The method according to claim 6,
Wherein the rubber member has a rectangular shape and its lower surface is fixed to the upper surface of the cross bar in close contact. The method according to claim 6,
Wherein the rubber member is formed to protrude upward from an upper surface of the cross bar. 10. The method of claim 9,
And one end of the rubber member on the side of the upper frame is convexly formed. The method according to claim 1,
Wherein the buffer member is a sponge. An upper frame; A lower frame fitted to the upper frame; And a crossbar provided between the upper frame and the lower frame for turning on and off the movable contactor and the fixed contactor according to whether current is applied,
Wherein an upper portion of the upper frame is provided with a buffer member inside the upper portion thereof. 13. The method of claim 12,
Characterized in that the buffer member is a spring, 14. The method of claim 13,
Wherein an upper portion of the upper frame is formed with a spring-fitted portion so as to fit the spring. 15. The method of claim 14,
Wherein the spring-fitted portion is narrowed in width from both sides to a central portion, so that one end of the spring is fitted to the center portion of the spring-fitted portion. 16. The method of claim 15,
And a release preventing member is provided in the vicinity of the spring fitting portion to wrap the spring fitting portion,
Wherein the spring is prevented from being released from contact with the upper frame through the release preventing member when one end of the spring is fitted in the center of the spring fitting portion.
KR1020150181244A 2015-12-17 2015-12-17 Electro magnetic contector KR20170072727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150181244A KR20170072727A (en) 2015-12-17 2015-12-17 Electro magnetic contector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150181244A KR20170072727A (en) 2015-12-17 2015-12-17 Electro magnetic contector

Publications (1)

Publication Number Publication Date
KR20170072727A true KR20170072727A (en) 2017-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150181244A KR20170072727A (en) 2015-12-17 2015-12-17 Electro magnetic contector

Country Status (1)

Country Link
KR (1) KR20170072727A (en)

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