Electronic contactor having structure for improving operation performance

Abstract

Disclosed is an electronic contactor having a structure for preventing welding spatter from entering the interior and improving operation performance. An electronic contactor having a structure for improving operational performance according to one embodiment of the present invention may comprise: a fixed contact; a movable contact which is located at a position adjacent to the fixed contact and is in contact with or separated from the fixed contact; a movable iron core coupled to the movable contact so as to be movable in either a direction toward the movable contact or a direction away from the movable contact; a fixed core positioned between the movable contact and the movable core and magnetized to apply an attractive force to the movable core; and a magnetic body provided in an inner space of the movable iron core to increase magnetic force, so that an operating voltage of the movable iron core can be reduced.

Description

Technical Field

[0001] The present invention relates to an electronic contactor, and more particularly to an electronic contactor with a structure for preventing welding spatter from entering the interior and improving operating performance. Background Art

[0002] Generally, an electronic contactor is a device that creates contact between contacts by applying current to an electromagnet, generating a magnetic attraction. When the electromagnet creates a magnetic attraction, the movable contact moves toward the fixed contact, bringing the two into contact with each other.

[0003] The fixed contacts of an electronic contactor are connected to an external power source and a load, respectively, in a manner that allows for energization. When the fixed and movable contacts are in contact, the external power source and the load are electrically connected. When the current is removed from the electromagnet, the magnetic attraction created by the electromagnet is also released. Consequently, the movable contact separates from the fixed contact, releasing the current between the external power source and the load.

[0004] Typically, an electronic contactor is provided with a movable iron core that moves toward a fixed iron core due to magnetic attraction, and the fixed iron core and the movable iron core form an iron core portion. When an external control power source is applied, the iron core portion provides a driving force for moving the movable contact toward the fixed contact. In addition, when the external control power source is cut off, the iron core portion provides a driving force for moving the movable contact, which is in contact with the fixed contact, away from the fixed contact.

[0005] Korean Patent No. 10-2452354 discloses a DC relay, specifically an electronic contactor, in which a movable contact and a fixed contact are brought into contact and separated, thereby connecting or disconnecting an external power source and a load in an energized manner.

[0006] However, the DC relay disclosed in the prior art document has a structure in which the area of ​​the movable core of the core portion is enlarged and a free space is provided inside in order to achieve an operating performance corresponding to the driving of the DC relay.

[0007] However, the structure disclosed in the prior art is difficult to adjust the motion performance, which results in reduced mass production, and requires additional processing when manufacturing the movable iron core, so the cost reduction effect is minimal.

[0008] Furthermore, in the DC relay disclosed in the prior art, the movable shaft and the movable core are welded to secure them to each other. This poses a problem in that particles of molten metal or non-metallic material (i.e., spatter) scattered or splashed during the welding process enter the interior space of the movable core and are then assembled in this state. Summary of the Invention

[0009] Problems to be solved by the invention

[0010] The present invention is used to solve the problems mentioned above. The purpose of the present invention is to provide an electronic contactor with a structure that improves the operating performance. By providing a magnetic body to the internal space formed by the movable iron core in the iron core part, while maintaining the maximum advantage corresponding to the structure of the movable iron core, the operating performance of the electronic contactor is maximized, and the number of magnetic bodies provided is adjusted according to the required operating performance, so that performance requirements can be immediately met.

[0011] Another object of the present invention is to provide an electronic contactor with a structure that improves operating performance, providing a magnetic body in the empty space inside the movable iron core of the iron core part, and welding the movable iron core to the movable shaft, thereby preventing spatter that may be generated during welding from entering the empty space.

[0012] Problems of the present invention are not limited to the above-mentioned problems, and those skilled in the art can clearly understand other problems not mentioned from the following description.

[0013] Means used to solve problems

[0014] According to one embodiment of the present invention, there is provided an electronic contactor having a structure with improved operating performance, comprising: a fixed contact; a movable contact located adjacent to the fixed contact and in contact with or separated from the fixed contact; a movable iron core coupled to the movable contact in a manner capable of moving in either a direction toward the movable contact or a direction away from the movable contact; a fixed iron core magnetized to apply an attractive force to the movable iron core; and a magnetic body arranged adjacent to the movable iron core to increase the magnetic force.

[0015] At this time, the magnetic body may be a permanent magnet.

[0016] At this time, the number of the magnetic bodies may be multiple so as to be able to adjust the magnetic force.

[0017] At this time, it can include a movable shaft, one end of which is fixed to the movable contact and moves together with the movable contact, the other end of which is fixed to the movable iron core, the movable shaft can be configured to pass through the movable iron core, and the magnetic body is formed with a through hole and is configured to surround the movable shaft.

[0018] In this case, the magnetic body may be a plurality of magnetic bodies, and each magnetic body is arranged to form a layer along the outer surface of the movable shaft, thereby adjusting the number of the magnetic bodies.

[0019] At this time, in a state where the magnetic body is arranged, the end portion of the movable shaft may be welded to fix the movable shaft and the movable iron core.

[0020] At this time, the operating voltage provided to the fixed iron core can be adjusted according to the number of the magnetic bodies.

[0021] Here, the movable iron core may include: an upper surface having the through hole formed therein; and a side surface extending downward from the upper surface, having an opening formed therein and forming an inner space for accommodating the magnetic body.

[0022] In this case, the device may include a partition wall extending along the through hole to the opening of the side surface so as to prevent the movable shaft from being in close contact with the magnetic body.

[0023] At this time, the partition wall and the side surface may be formed in a cylindrical shape.

[0024] Effects of the Invention

[0025] According to the above structure, the electronic contactor having a structure for improving the operating performance according to one aspect of the present invention has a magnetic body provided inside the movable iron core, and can provide maximum performance by reducing the operating voltage by increasing the magnetic force when operating with the fixed iron core.

[0026] According to one aspect of the present invention, an electronic contactor having a structure for improving operating performance can achieve an operating voltage desired by consumers because the number of magnetic bodies disposed inside a movable core can be adjusted.

[0027] According to one aspect of the present invention, an electronic contactor having a structure for improving operating performance is welded to a movable shaft while a magnetic body is provided inside the movable iron core, thereby preventing splashes that may cause malfunction from entering the interior of the component.

[0028] The effects of the present invention are not limited to the above-mentioned effects, and should be understood to include all effects that can be derived from the technical features of the invention described in the detailed description of the present invention or the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a perspective view showing an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention.

[0030] Figure 2 It is along Figure 1 The cross-sectional view is shown along line AA.

[0031] Figure 3 It is along Figure 1 A cross-sectional view taken along line BB is shown.

[0032] Figure 4 This is an exploded perspective view showing an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention.

[0033] Figure 5 and Figure 6 These are exploded perspective views showing important elements of a portion of the structure of an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention, viewed separately from different directions.

[0034] Figure 7 This is an exploded perspective view showing the connection relationship between a movable iron core, which is a partial component of an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention, and surrounding components.

[0035] Figure 8 This is a cross-sectional view illustrating the operation of the electronic contactor having a structure for improving operating performance according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention can be implemented in various forms and is not limited to the embodiments described herein. To clarify the present invention, portions not relevant to the description are omitted from the drawings, and throughout the specification, identical or similar components are designated by the same reference numerals.

[0037] The words and terms used in this specification and the appended claims should not be construed as limited to the ordinary or dictionary meanings, but should be construed as meanings and concepts consistent with the technical ideas of the present invention, based on the principle that inventors can define terms and concepts to best explain their own inventions.

[0038] Therefore, the embodiments described in this specification and the structures shown in the drawings belong to a preferred embodiment of the present invention and do not represent the technical ideas of the present invention. Therefore, when applying for the present invention, the structure may have various equivalents and modifications that replace it.

[0039] In this specification, terms such as "including" or "having" are used to specify the existence of features, numbers, steps, actions, constituent elements, parts or their combinations recorded in this specification, and do not preclude the existence or additional possibility of one or more other features, numbers, steps, actions, constituent elements, parts or their combinations.

[0040] Hereinafter, an electronic connector having a structure for improving operating performance according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0041] The terms “upper side”, “lower side”, “left side”, “right side”, “front” and “rear” used in the following description should be understood with reference to the coordinate system shown throughout the accompanying drawings.

[0042] Reference Figures 1 to 8 , illustrates an electronic connector having a structure with improved operational performance according to one embodiment of the present invention. The electronic contactor 10 is electrically connected to an external power source (not shown) and a load (not shown). The electronic contactor 10 can be configured to establish or release an energized state between the external power source (not shown) and the load (not shown). To this end, the electronic contactor 10 includes a fixed contact 220 and a movable contact 410, which will be described later.

[0043] The electronic contactor 10 according to an embodiment of the present invention includes an upper magnetic yoke 450 and a lower magnetic yoke 460, which are used to offset the electromagnetic repulsive force generated when the fixed contact 220 and the movable contact 410 come into contact. At this time, regardless of the elevation of the structure (i.e., the movable shaft 430) provided in a traverseable manner, the upper magnetic yoke 450 can be maintained at a specific height.

[0044] Therefore, even if the movable shaft 430 is raised or lowered, the upper magnetic yoke 450 and the lower magnetic yoke 460 are configured to overlap each other at least partially, thereby forming a sufficiently large magnetic attraction force between them. Therefore, the electromagnetic repulsion force generated when the fixed contact 220 and the movable contact 410 contact each other can be effectively offset.

[0045] In one embodiment, the electronic contactor 10 may be provided with an auxiliary contact housing 470. The auxiliary contact housing 470 is provided on the movable contact assembly 400 and can be maintained at a specific height regardless of the movement of the movable shaft 430. The auxiliary contact housing 470 can be electrically connected to the auxiliary contact 250, which is configured to obtain information related to the status of the electronic contactor 10. Therefore, information related to the status of the electronic contactor 10 can be stably obtained.

[0046] Furthermore, the electronic contactor 10 is provided with a movable contact support member 480. The movable contact support member 480 is formed so as to surround the movable contact 410 in one or more directions. The movable contact support member 480 is configured to prevent the movable contact 410 from rotating arbitrarily.

[0047] In the illustrated embodiment, the electronic contactor 10 includes a housing 100 , a switch portion 200 , a core portion 300 , and a movable contact assembly 400 .

[0048] The housing 100 forms the outer shape of the electronic contactor 10. The interior of the housing 100 forms a space that can accommodate each structure of the electronic contactor 10. The space of the housing 100 is electrically connected to an external power source (not shown) and a load (not shown).

[0049] In one embodiment, the space of the housing 100 can accommodate the switch unit 200, the core unit 300, and the movable contact assembly 400. At this time, the fixed contacts 220 of the switch unit 200 can be partially exposed to the outside and electrically connected to an external power source (not shown) and a load (not shown).

[0050] The space of the housing 100 communicates with the outside. An arc generated when an abnormal current flows and the fixed contact 220 and the movable contact 410 are separated may be discharged to the outside of the housing 100.

[0051] In the illustrated embodiment, the housing 100 includes an upper housing 110 , a lower housing 120 , a support plate 130 , and an inner housing 140 .

[0052] In one embodiment, the support plate 130 partially separates the interior space of the upper housing 110 from the interior space of the lower housing 120. The support plate 130 supports a portion of the movable contact assembly 400 at one side in the height direction (the lower side in the illustrated embodiment).

[0053] A through hole is formed in the support plate 130 along the thickness direction, ie, the vertical direction. The movable shaft 430 is received in the through hole of the support plate 130 in a liftable manner.

[0054] The inner housing 140 supports the auxiliary contact 250 and the auxiliary contact cable 260, which is electrically coupled to the auxiliary contact 250. The inner housing 140 is coupled to the auxiliary contact 250 and the auxiliary contact cable 260, respectively.

[0055] The inner housing 140 is accommodated in the inner space of the upper housing 110. The inner housing 140 is located inside the upper housing 110 and the opening and closing portion 200. Specifically, the inner housing 140 is located between the magnet support member 230 and the arc chamber 210.

[0056] The arc chamber 210 may be housed in the inner housing 140 via the lower side. The inner housing 140 surrounds the housed arc chamber 210 on the outer side.

[0057] The magnet member 240 can form a magnetic field inside the arc chamber 210 accommodated in the arc chamber accommodation space 145. The formed magnetic field can form an extinguishing path for the arc generated when the fixed contact 220 and the movable contact 410 are separated.

[0058] The switch unit 200 is configured to allow or cut off the energization between an external power source (not shown) and a load (not shown) electrically connected to the electronic contactor 10 together with the movable contact assembly 400 .

[0059] In the illustrated embodiment, the switch unit 200 includes an arc chamber 210 , a fixed contact 220 , a magnet support member 230 , a magnet member 240 , an auxiliary contact 250 , and an auxiliary contact cable 260 .

[0060] The arc chamber 210 accommodates the fixed contact 220 and the movable contact 410 .

[0061] The movable contact 410 is movably accommodated in the arc chamber 210. When an abnormal current flows and the fixed contact 220 and the movable contact 410 are separated, the arc chamber 210 can prevent the generated arc from flowing freely. In other words, the arc chamber 210 is configured to prevent other structures of the electronic contactor 10 from being damaged by the arc.

[0062] A magnetic field formed by the magnet member 240 may be formed inside the arc chamber 210. The magnetic field may form a path for extinguishing the generated arc and flowing out to the outside.

[0063] The arc chamber 210 is coupled to a fixed contact 220 .

[0064] The fixed contact 220 is the portion of the electronic contactor 10 that electrically connects to an external power source (not shown) or a load (not shown). The fixed contact 220 is coupled to the upper housing 110, the inner housing 140, and the arc chamber 210. The fixed contact 220 extends along the height of the housing 100 (the vertical direction in the illustrated embodiment).

[0065] One side in the height direction of the fixed contact 220 (the upper side in the illustrated embodiment) is exposed to the outside of the upper housing 110. An external power source (not shown) or a load (not shown) can be electrically connected to the fixed contact 220 through the upper side.

[0066] It should be understood that the contact and separation between the fixed contact 220 and the movable contact 410 are achieved by the movement of the movable contact 410 .

[0067] The magnet supporting member 230 is combined with the magnet member 240 to support it.

[0068] By means of the magnet support member 230 , the magnet member 240 may be maintained at a predetermined position to form a magnetic field inside the arc chamber 210 .

[0069] The magnet member 240 forms a magnetic field in the interior space of the arc chamber 210. The magnetic field formed by the magnet member 240 can provide a magnetic force to induce an arc. The arc can be extinguished and discharged along the path induced by the magnetic field.

[0070] Two magnet members 240 may be provided, including a first magnet member located on the left and a second magnet member located on the right.

[0071] The auxiliary contact 250 is electrically connected to a substrate member (not shown) for collecting information related to the operating status of the electronic contactor 10. The information collected by the substrate member (not shown) can be transmitted to an external control unit (not shown) through the auxiliary contact 250.

[0072] Therefore, even without disassembling the electronic contactor 10 , the operating state of the electronic contactor 10 can be easily identified.

[0073] The auxiliary contact 250 may be electrically coupled to the auxiliary contact cable 260 .

[0074] The auxiliary contact 250 is located between the pair of fixed contacts 220. In the illustrated embodiment, the auxiliary contact 250 is located between the pair of fixed contacts 220 along the length direction of the housing 100 (ie, the left-right direction).

[0075] The auxiliary contact cable 260 electrically connects the auxiliary contact 250 to an external control unit (not shown). The auxiliary contact cable 260 electrically connects the auxiliary contact 250 and the external control unit (not shown).

[0076] When external control power is applied, core 300 provides a driving force for moving movable contact 410 toward fixed contact 220. When external control power is turned off, core 300 provides a driving force for moving movable contact 410, which is in contact with fixed contact 220, away from fixed contact 220.

[0077] The core portion 300 is coupled to the housing 100. Specifically, a portion of the core portion 300 is fixedly disposed in a space formed within the lower housing 120. Furthermore, the remaining portion of the core portion 300 is movably disposed in the space formed within the lower housing 120. In this case, the remaining portion of the core portion 300 may be movably disposed in the height direction (i.e., vertical direction) of the lower housing 120.

[0078] The core portion 300 is coupled to the movable contact assembly 400. The movable core 320, which will be described later, can be coupled to a movable shaft 430 of the movable contact assembly 400 and move together.

[0079] In the illustrated embodiment, the core portion 300 includes a fixed core 310 , a movable core 320 , a magnetic body 380 , a core yoke 330 , a bobbin 340 , a coil 350 , a return spring 360 , and a cylinder 370 .

[0080] The fixed core 310 is magnetized by the applied control power, thereby providing a magnetic attractive force to the movable core 320. The movable core 320 and the movable shaft 430 coupled thereto can move toward the fixed core 310 due to the magnetic attractive force applied by the fixed core 310.

[0081] Therefore, the movable contact 410 coupled to the movable shaft 430 also moves together, so that the movable contact 410 and the fixed contact 220 may come into contact with each other and be energized.

[0082] The fixed iron core 310 may be configured in any form so as to be magnetized by an external control power source and to apply magnetic attraction to the movable iron core 320. In one embodiment, the fixed iron core 310 may be provided in the form of an electromagnet.

[0083] The fixed core 310 is coupled to the support plate 130. The fixed core 310 is accommodated in a space formed within the cylinder 370. One side of the fixed core 310 in the height direction (the upper side in the illustrated embodiment) is fixedly coupled to the support plate 130. The other side of the fixed core 310 in the height direction (the lower side in the illustrated embodiment) is elastically supported by a return spring 360.

[0084] The movable iron core 320 moves toward the fixed iron core 310 by the magnetic attraction force applied by the fixed iron core 310 . In addition, the movable iron core 320 moves away from the fixed iron core 310 by the elastic force applied by the return spring 360 .

[0085] The movable iron core 320 is accommodated in a space formed inside the cylinder 370 .

[0086] The movable iron core 320 is disposed opposite to the support plate 130 across the fixed iron core 310. In the illustrated embodiment, the movable iron core 320 is located below the fixed iron core 310.

[0087] The movable iron core 320 is coupled to the movable shaft 430 . When the movable iron core 320 moves, the movable shaft 430 can also move. Therefore, a portion of the structure provided in the movable contact assembly 400 can move together with the movable iron core 320 .

[0088] The movable iron core 320 is elastically supported by the return spring 360 . Specifically, one side in the height direction of the movable iron core 320 (the upper side in the illustrated embodiment) is supported by one end portion in the height direction of the return spring 360 .

[0089] The movable iron core 320 may be configured in any shape that can be moved toward the fixed iron core 310 by the magnetic attraction applied by the fixed iron core 310. In one embodiment, the movable iron core 320 may be formed of a magnetizable metal material such as iron (Fe).

[0090] The movable iron core 320 may include a magnetic body 380 disposed in an internal space thereof.

[0091] The magnetic body 380 may be disposed in an inner space provided on the movable iron core 320 and add magnetic force so as to reduce the operating voltage of the movable iron core 320 .

[0092] Multiple magnetic bodies 380 may be provided to adjust the magnetic force. In the illustrated embodiment, three magnetic bodies 380 may be provided, each in the form of a ring-shaped token having a through hole 321a. Of course, the number of magnetic bodies 380 is not limited to three. The movable shaft 430 may pass through the through hole 321a.

[0093] In the illustrated embodiment, since the movable iron core 320 itself is made of a material that is attached by magnetic force, the magnetic body 380 does not require an additional fixing unit and can be fully fixed in the internal space of the movable iron core 320 by magnetic force.

[0094] There are multiple magnetic bodies 380, each of which is arranged to form a layer along the outer surface of the movable shaft 430. Therefore, the number of magnetic bodies 380 can be adjusted. By adjusting the number of magnetic bodies 380 as described above, the operating voltage of the movable iron core 320 can be adjusted.

[0095] In the illustrated embodiment, for example, if the conventional operating voltage required for the movable iron core 320 to operate is 7V-8V, then when the magnetic bodies 380 fill the internal space to the maximum extent, the operating voltage can be reduced to below 4V. Of course, the operating voltage can also be adjusted to between 4V and 7V by adjusting the number of magnetic bodies 380.

[0096] With the magnetic body 380 in place, the end of the movable shaft 430 is welded to the movable core 320, thereby securing the movable shaft 430 and the movable core 320. Since the magnetic body 380 fills the internal space, welding spatter is prevented from entering the internal space during welding. Consequently, operational problems caused by spatter from the movable core 320 can be prevented.

[0097] In the illustrated embodiment, the movable iron core 320 may include an upper surface 321 formed with the through hole 321 a .

[0098] The movable core 320 may include a side surface 322 extending from the upper surface toward the lower side in the opposite direction, and having an opening formed at the lower portion thereof, and forming the inner space for accommodating the magnetic body 380 .

[0099] The movable core 320 may include a partition wall 323 extending along the through hole 321a to the opening of the side surface 322 to prevent the movable shaft 430 from being in close contact with the magnetic body 380. In the illustrated embodiment, the partition wall 323 and the side surface 322 may be formed in a cylindrical shape.

[0100] The end of the partition wall 323 of the movable core 320 and the end of the movable shaft 430 are welded, so that the movable core 320 and the movable shaft 430 can be fixed and move together. Of course, since the magnetic body 380 is inside, welding spatter can be prevented from entering the inside.

[0101] By providing the magnetic body 380 in the movable iron core 320 as described above, the operating voltage required for the movable iron core 320 to operate can be lowered than before, thereby improving the starting efficiency, and the operating voltage required by the customer can be adjusted to a certain range by adjusting the number of magnetic bodies 380.

[0102] The core yoke 330 functions as a fixed core relative to the magnetic field formed by the coil 350 by the applied control power. The core yoke 330 is magnetized by the formed magnetic field and can function as an electromagnet.

[0103] The core yoke 330 is coupled to the housing 100. Specifically, the core yoke 330 is accommodated in a space formed inside the lower housing 120. The support plate 130 is located on one side (upper side in the illustrated embodiment) of the core yoke 330 in a height direction.

[0104] The core yoke 330 is configured to surround the bobbin 340 and the coil 350. The core yoke 330 is located adjacent to the coil 350 and can be magnetized by the magnetic field formed by the coil 350.

[0105] The bobbin 340 supports the coil 350. The coil 350 can be accommodated in the housing 100 in a state of being wound around the bobbin 340. That is, the bobbin 340 functions as a bobbin.

[0106] The bobbin 340 is coupled to the housing 100. Specifically, the bobbin 340 is housed in a space formed inside the lower housing 120. As described above, the bobbin 340 is located radially inward of the core yoke 330. A hollow portion is formed inside the bobbin 340 to accommodate the cylinder 370.

[0107] The coil 350 receives control power from the outside and forms a magnetic field.

[0108] The magnetic field formed by the coil 350 magnetizes the core yoke 330 , thereby generating a magnetic force for moving the movable core 320 toward the fixed core 310 .

[0109] The coil 350 is coupled to the housing 100. Specifically, the coil 350 is accommodated in a space formed inside the lower housing 120. The coil 350 is coupled to the bobbin 340. The coil 350 may be wound along the periphery of the bobbin 340.

[0110] The return spring 360 provides a restoring force for the movable iron core 320 to move away from the fixed iron core 310 , which moves toward the fixed iron core 310 . The return spring 360 is located between the fixed iron core 310 and the movable iron core 320 . The return spring 360 is accommodated in the inner space of the cylinder 370 .

[0111] The return spring 360 can be configured to store a restoring force when the movable iron core 320 moves toward the fixed iron core 310 and to provide the stored restoring force to the movable iron core 320 when the control power is released. In the illustrated embodiment, the return spring 360 is provided in the form of a coil spring.

[0112] In the illustrated embodiment, the return spring 360 extends in the height direction (i.e., the vertical direction) of the housing 100. One end of the return spring 360 in the extending direction contacts the fixed iron core 310. The other end of the return spring 360 in the extending direction contacts the movable iron core 320. In other words, the return spring 360 elastically supports the movable iron core 320.

[0113] The cylinder 370 accommodates the movable core 320 and the movable shaft 430 coupled to the movable core 320, so that the movable core 320 and the movable shaft 430 can move. In the illustrated embodiment, the cylinder 370 extends in the height direction (i.e., the vertical direction) of the housing 100, thereby accommodating the movable core 320 and the movable shaft 430, so that the movable core 320 and the movable shaft 430 can be raised and lowered.

[0114] The cylinder 370 is combined with the bobbin 340. The cylinder 370 may be located in a hollow formed inside the bobbin 340.

[0115] Reference Figures 1 to 8 The electronic contactor 10 according to the embodiment of the present invention includes a movable contact assembly 400 .

[0116] The movable contact assembly 400 according to an embodiment of the present invention includes a plurality of magnetic yokes 450 and 460 configured to offset the electromagnetic repulsive force generated when the fixed contact 220 and the movable contact 410 come into contact. In particular, any one of the plurality of magnetic yokes 450 and 460 can remain in a predetermined position regardless of the movement of the movable contact 410.

[0117] Therefore, compared to the case where the multiple yokes 450, 460 are all moved, the area where the multiple yokes 450, 460 overlap each other can be increased. Therefore, the magnetic attraction between the multiple yokes 450, 460 is increased, thereby effectively offsetting the electromagnetic repulsion generated between the fixed contact 220 and the movable contact 410.

[0118] In addition, the movable contact assembly 400 according to the embodiment of the present invention includes an auxiliary contact housing 470 electrically connected to the auxiliary contact 250. A substrate member (not shown) is provided on the auxiliary contact housing 470, and information related to the operating status of the electronic contactor 10 can be transmitted through the auxiliary contact 250.

[0119] Furthermore, in the movable contact assembly 400 according to the embodiment of the present invention, any one of the magnetic yokes 450 can be combined with the auxiliary contact housing 470. Therefore, the volume of the entire movable contact assembly 400 can be reduced and the convenience of assembly can be improved.

[0120] Furthermore, regardless of the movement of the movable contact 410 , any one of the yokes 450 may be maintained at a predetermined position.

[0121] In the illustrated embodiment, the movable contact assembly 400 includes a movable contact 410 , a movable frame 420 , a movable shaft 430 , a movable spring 440 , an upper yoke 450 , a lower yoke 460 , an auxiliary contact housing 470 , and a movable contact support member 480 .

[0122] The movable contact 410 is configured to come into contact with or be separated from the fixed contact 220 .

[0123] The movable contact 410 can be in contact with or separated from the plurality of fixed contacts 220 at the same time. When the movable contact 410 and the fixed contacts 220 are in contact with each other, an external power source (not shown) and a load (not shown) connected to the electronic contactor 10 in an electrically conductive manner can be electrically connected to each other.

[0124] The movable contact 410 is housed in the housing 100. Specifically, the movable contact 410 is movably housed inside the arc chamber 210, which is housed in the interior space of the upper housing 110. In one embodiment, the movable contact 410 can be housed inside the arc chamber 210 so as to be movable along the height direction (i.e., the vertical direction) of the upper housing 110.

[0125] The movable contact 410 is movably coupled to the movable frame 420. The movable contact 410 can move relative to the movable frame 420. That is, the movable frame 420 is coupled to the support plate 130 and does not move arbitrarily.

[0126] The movable contact 410 is coupled to the movable shaft 430. When the movable iron core 320 coupled to the movable shaft 430 moves, the movable contact 410 may also move together.

[0127] The movable contact 410 is combined with the movable spring 440. Specifically, the movable contact 410 is elastically supported by the movable spring 440. In the illustrated embodiment, the lower side portion of the movable contact 410 is elastically supported by the movable spring 440.

[0128] The movable contact 410 is located adjacent to the upper yoke 450. The movable contact 410 may be configured to be at least partially surrounded by the upper yoke 450. In the illustrated embodiment, the movable contact 410 is surrounded by the upper yoke 450 on one side in the height direction (i.e., the upper side) and on both sides in the width direction (i.e., the front and rear sides).

[0129] The movable contact 410 is located adjacent to the lower yoke 460. The movable contact 410 may be in contact with and supported by the lower yoke 460. In the illustrated embodiment, a lower portion of the movable contact 410 is supported by the lower yoke 460.

[0130] The movable contact 410 may move together with the lower yoke 460 .

[0131] The movable contact 410 is located adjacent to the auxiliary contact housing 470. The movable contact 410 can be configured to be at least partially surrounded by the auxiliary contact housing 470. In the illustrated embodiment, one side in the height direction (i.e., the upper side) and both sides in the width direction (i.e., the front and rear sides) of the movable contact 410 are surrounded by the auxiliary contact housing 470.

[0132] The movable contact 410 can be supported by a movable contact support member 480. As described later, the movable contact support member 480 is formed to surround the movable contact 410 at least at one location along the length direction of the movable contact 410. In the illustrated embodiment, the movable contact 410 is surrounded by the movable contact support member 480 on one side in the height direction (i.e., the upper side) and on both sides in the width direction (i.e., the front and rear sides).

[0133] The movable contact 410 can be any shape that can simultaneously contact and energize multiple fixed contacts 220. In the illustrated embodiment, the movable contact 410 is a polygonal column having a length in the left-right direction, a width in the front-back direction, and a height in the top-bottom direction.

[0134] In this case, the length of the movable contact 410 in the extending direction (ie, the left-right direction) can be formed to be greater than the distance separating the pair of fixed contacts 220. With this structure, the movable contact 410 can contact multiple fixed contacts 220 at the same time.

[0135] The movable frame 420 is located adjacent to the movable contact 410 .

[0136] The movable frame 420 is a structure installed on the support plate 130 in the structure of the movable contact assembly 400. The movable frame 420 can be configured to be fixed to the support plate 130 and not to move arbitrarily.

[0137] A through hole is formed inside the movable frame 420. The movable shaft 430 can be inserted into the through hole in a liftable manner.

[0138] The movable shaft 430 transmits the movement of the movable iron core 320 to the movable contact 410. The movable shaft 430 may be coupled to the movable iron core 320 and the movable contact 410 and move together.

[0139] The movable shaft 430 extends in the height direction (the vertical direction in the illustrated embodiment) of the housing 100. One side of the movable shaft 430 in the height direction (the upper side in the illustrated embodiment) is coupled to the movable contact 410 via a shaft bracket 431. The other side of the movable shaft 430 in the height direction (the lower side in the illustrated embodiment) is coupled to the movable iron core 320.

[0140] The movable shaft 430 is coupled to the support plate 130. Specifically, the movable shaft 430 movably penetrates an opening formed inside the support plate 130.

[0141] The movable shaft 430 is coupled to the movable iron core 320. The movable shaft 430 passes through a hollow formed inside the return spring 360 and is movably accommodated in the cylinder 370.

[0142] The movable shaft 430 is coupled to the movable contact 410 , and the movable shaft 430 can move together with the movable contact 410 .

[0143] The movable shaft 430 is coupled to the movable frame 420. Specifically, the movable shaft 430 passes through an opening formed inside the movable frame 420. The movable shaft 430 is coupled to the movable frame 420 in a movable manner.

[0144] The movable shaft 430 supports the movable spring 440. Specifically, the movable shaft 430 contacts one side (ie, the lower side) of the length direction of the movable spring 440. Therefore, the movable contact 410 and the lower yoke 460 can be elastically supported by the movable spring 440.

[0145] The movable shaft 430 is coupled to the movable contact support member 480 , and the movable shaft 430 can move together with the movable contact support member 480 .

[0146] In the illustrated embodiment, the movable shaft 430 includes a shaft support 431 .

[0147] The shaft bracket 431 is a portion that connects the movable shaft 430 to other structures of the movable contact assembly 400. In the illustrated embodiment, the shaft bracket 431 is connected to the movable contact 410, the movable spring 440, the lower yoke 460, and the movable contact support member 480.

[0148] Specifically, the movable contact 410 and the lower yoke 460 are disposed opposite to the shaft support 431 via the movable spring 440. The movable contact 410 and the lower yoke 460 are elastically supported by the movable spring 440.

[0149] The shaft support 431 is located on one side (the upper side in the illustrated embodiment) in the longitudinal direction of the movable shaft 430. The shaft support 431 is located above the support plate 130 and the movable frame 420. In this case, the shaft support 431 can be formed to have a cross-sectional area greater than the cross-sectional area of ​​the through holes formed in the support plate 130 and the movable frame 420, respectively.

[0150] Therefore, the shaft bracket 431 may be retained at the upper sides of the support plate 130 and the movable frame 420 without being able to pass through the through-hole formed inside the support plate 130 or the movable frame 420 .

[0151] In addition, the position where the movable shaft 430 can move in the direction opposite to the fixed contact 220 (ie, the lower side in the illustrated embodiment) may be limited to a position where the movable shaft 430 contacts the movable frame 420 .

[0152] The movable spring 440 elastically supports the movable contact 410 and the lower yoke 460. The movable spring 440 is located between the movable contact 410, the lower yoke 460 and the shaft support 431. The movable spring 440 is located below the movable contact 410 and the lower yoke 460.

[0153] The movable spring 440 extends between the shaft support 431 and the lower magnetic yoke 460. In the illustrated embodiment, the movable spring 440 extends in the direction in which the movable shaft 430 extends (i.e., in the vertical direction). One end of the movable spring 440 in the extension direction (i.e., the upper end) contacts the lower magnetic yoke 460. The other end of the movable spring 440 in the extension direction (i.e., the lower end) is supported by the shaft support 431.

[0154] When movable shaft 430 moves toward fixed contact 220, movable spring 440 pressurizes shaft support 431 to store a restoring force, allowing the shaft support to move together. The stored restoring force presses movable contact 410 toward fixed contact 220, thereby stably maintaining contact between fixed contact 220 and movable contact 410.

[0155] The upper yoke 450 and the lower yoke 460 together form a magnetic attraction force. The magnetic attraction force formed by the upper yoke 450 and the lower yoke 460 can offset the electromagnetic repulsion force generated when the fixed contact 220 and the movable contact 410 are in contact. As a result, the contact state between the fixed contact 220 and the movable contact 410 can be stably established and maintained.

[0156] The upper magnetic yoke 450 may be configured in any shape that can form a magnetic attraction force with the lower magnetic yoke 460. In one embodiment, the upper magnetic yoke 450 may be made of a magnetic body, such as a permanent magnet.

[0157] The upper yoke 450 is located adjacent to the movable contact 410. At this time, the upper yoke 450 may be configured not to contact the movable contact 410 but to surround at least a portion of the movable contact 410.

[0158] The upper magnetic yoke 450 is located adjacent to the lower magnetic yoke 460. The upper magnetic yoke 450 may be configured to surround the lower magnetic yoke 460 on the outside.

[0159] The electronic contactor 10 according to the embodiment of the present invention can be configured to minimize the separation distance between the upper magnetic yoke 450 and the lower magnetic yoke 460 . This is achieved by combining the upper magnetic yoke 450 with the auxiliary contact housing 470 .

[0160] That is, the upper yoke 450 is coupled to the auxiliary contact housing 470 so as not to move together with the movable contact 410 or the movable shaft 430. In other words, the upper yoke 450 can be held at a predetermined position by the auxiliary contact housing 470 coupled to the fixed movable frame 420.

[0161] like Figures 2 to 8 As shown, the upper yoke 450 is indirectly coupled to the movable frame 420 via the auxiliary contact housing 470. As described above, the movable frame 420 is supported by the support plate 130 and does not move independently of the movable shaft 430.

[0162] When the upper magnetic yoke 450 is combined with the auxiliary contact housing 470, the volume of the shaft support 431 can be reduced by an amount corresponding to the portion combined with the upper magnetic yoke 450. In addition, the force required to move the movable iron core 320 can be reduced by an amount corresponding to the weight of the upper magnetic yoke 450 and the reduced volume of the shaft support 431.

[0163] The upper yoke 450 may be divided into a plurality of parts. One part of the upper yoke 450 is housed in the auxiliary contact housing 470 and is not exposed to the outside. The other part of the upper yoke 450 may be exposed to the movable contact housing space 474 provided in the auxiliary contact housing 470.

[0164] In the illustrated embodiment, the upper yoke 450 is configured to include a first extension 451 and a second extension 452. The first extension 451 extends along the length of the auxiliary contact housing 470 (the front-to-back direction in the illustrated embodiment). The first extension 451 is housed within the auxiliary contact housing 470 and is not exposed to the outside. The first extension 451 surrounds the movable contact 410 and the lower yoke 460 on one side in the height direction (the upper side in the illustrated embodiment).

[0165] The shape of the first extension portion 451 may correspond to the shape of the auxiliary contact housing 470. In the illustrated embodiment, the first extension portion 451 is a polygonal plate having a length in the front-to-back direction, a width in the left-to-right direction, and a thickness in the top-to-bottom direction.

[0166] The ends of the first extension portion 451 in the longitudinal direction (the front end and the rear end in the illustrated embodiment) are respectively continuous with the second extension portion 452 .

[0167] The second extension portion 452 extends in the height direction (the vertical direction in the illustrated embodiment) of the auxiliary contact housing 470. At least a portion of the second extension portion 452 is exposed outside the auxiliary contact housing 470. In other words, a portion of the second extension portion 452 is located within the movable contact accommodating space 474. The second extension portion 452 extends through a through hole (not referenced) formed within the auxiliary contact housing 470.

[0168] Multiple second extensions 452 may be provided. Each of the multiple second extensions 452 is continuous with the first extension 451 and may be separated from one another along the length of the first extension 451. In the illustrated embodiment, a pair of second extensions 452 are provided, each forming a predetermined angle with and continuous with each of the longitudinal ends (i.e., the front and rear ends) of the first extension 451. In one embodiment, the predetermined angle may be a right angle.

[0169] The second extension portion 452 surrounds the movable contact 410 and the lower yoke 460 in the width direction. In the illustrated embodiment, the second extension portion 452 surrounds the movable contact 410 and the lower yoke 460 at the front and rear sides, respectively.

[0170] The lower yoke 460 forms a magnetic attraction force together with the upper yoke 450 . As described above, the magnetic attraction force can offset the electromagnetic repulsive force generated between the fixed contact 220 and the movable contact 410 .

[0171] The lower yoke 460 may be configured in any configuration that can form a magnetic attraction force with the upper yoke 450. In one embodiment, similar to the upper yoke 450, the lower yoke 460 may be made of a magnetic material, such as a permanent magnet.

[0172] The lower yoke 460 is located adjacent to the movable contact 410. The lower yoke 460 is located on the other side (ie, the lower side) in the height direction of the movable contact 410. The lower yoke 460 supports the movable contact 410 from the lower side.

[0173] The lower yoke 460 is elastically supported by the movable spring 440. In the illustrated embodiment, the lower surface of the lower yoke 460 contacts and supports the upper end of the movable spring 440.

[0174] At least a portion of the lower yoke 460 is surrounded by the upper yoke 450 and the auxiliary contact housing 470 coupled to the upper yoke 450. In the illustrated embodiment, the upper side, front side, and rear side of the lower yoke 460 are surrounded by the upper yoke 450 and the auxiliary contact housing 470, respectively.

[0175] On the other hand, the lower yoke 460 can move together with the movable shaft 430 .

[0176] At this time, when the movable contact 410 moves to a position in contact with the fixed contact 220 , the lower yoke 460 may be configured to at least partially overlap the upper yoke 450 in the horizontal direction. This will be described in detail later.

[0177] The auxiliary contact housing 470 includes a substrate member (not shown) electrically connected to the auxiliary contact 250. The substrate member (not shown) can obtain information related to the working state of the electronic contactor 10 and transmit it to the outside through the auxiliary contact 250.

[0178] In addition, the auxiliary contact housing 470 is coupled to and supports the upper yoke 450. As described above, when the upper yoke 450 is coupled to the auxiliary contact housing 470, the position of the upper yoke 450 can be kept constant regardless of the movement of the movable shaft 430.

[0179] The auxiliary contact housing 470 is combined with the auxiliary contact 250 and energized. At this time, the auxiliary contact housing 470 does not move, and the auxiliary contact housing 470 can be combined with the auxiliary contact 250 and maintain a energized state.

[0180] The auxiliary contact housing 470 is coupled to the movable frame 420 . At this time, at least a portion of the auxiliary contact housing 470 is accommodated in the auxiliary contact housing accommodation portion 421 and supported by the movable frame 420 .

[0181] The auxiliary contact housing 470 is coupled to the upper yoke 450 . The portion of the auxiliary contact housing 470 that faces the movable contact 410 (ie, the lower side in the illustrated embodiment) is coupled to the upper yoke 450 .

[0182] The auxiliary contact housing 470 can accommodate at least a portion of the upper magnetic yoke 450. As described above, the first extension 451 of the upper magnetic yoke 450 is housed within the auxiliary contact housing 470 and is not exposed to the outside. Furthermore, at least a portion of the second extension 452 of the upper magnetic yoke 450 is located within the movable contact accommodating space 474 provided in the auxiliary contact housing 470 and is exposed to the outside.

[0183] To this end, a through hole (not denoted by a reference numeral) may be formed on the lower surface of each surface of the auxiliary contact housing 470. As described above, the second extension portion 452 may pass through the through hole (not denoted by a reference numeral).

[0184] The auxiliary contact housing 470 can be connected to the auxiliary contact 250 in an electrically conductive manner and can be combined with the upper magnetic yoke 450 to support the upper magnetic yoke 450. In the illustrated embodiment, the auxiliary contact housing 470 is a three-dimensional shape having a length in the front-to-back direction, a width in the left-to-right direction, and a height in the top-to-bottom direction.

[0185] At this time, a space (ie, a movable contact accommodating space 474 to be described later) is formed inside the auxiliary contact housing 470 , and the space movably accommodates the movable contact 410 and the lower yoke 460 .

[0186] In the illustrated embodiment, the auxiliary contact housing 470 includes an auxiliary contact plate 471 , auxiliary contact terminals 472 , an auxiliary contact housing frame 473 , and a movable contact accommodating space 474 .

[0187] The auxiliary contact plate 471 constitutes a portion of the auxiliary contact housing 470 . The auxiliary contact plate 471 supports a substrate member (not shown). The auxiliary contact terminals 472 are located on the auxiliary contact plate 471 .

[0188] The auxiliary contact plate 471 is continuous with the auxiliary contact housing frame 473 .

[0189] In the illustrated embodiment, the auxiliary contact plate 471 is continuous with the auxiliary contact housing frame 473 at each end portion (ie, the front end portion and the rear end portion) in the extending direction thereof.

[0190] The auxiliary contact plate 471 surrounds a portion of the movable contact accommodating space 474. In the illustrated embodiment, the auxiliary contact plate 471 surrounds the movable contact accommodating space 474 in the height direction (ie, the upper side).

[0191] The auxiliary contact plate 471 can be any shape that supports the base member (not shown) and the auxiliary contact terminals 472, is continuous with the auxiliary contact housing frame 473, and surrounds the movable contact accommodating space 474. In the illustrated embodiment, the auxiliary contact plate 471 is configured in a plate shape having a length in the front-to-back direction and a width in the left-to-right direction.

[0192] At this time, guides (not denoted by reference numerals) extending in the height direction may be formed at each widthwise end of the auxiliary contact plate 471. The guides are configured to prevent the substrate member (not shown) or the auxiliary contact terminal 472 from being detached.

[0193] The auxiliary contact terminal 472 is electrically connected to the auxiliary contact 250 .

[0194] In addition, the auxiliary contact terminal 472 is electrically connected to the substrate member (not shown). Information collected by the substrate member (not shown) can be transmitted to the outside through the auxiliary contact terminal 472 and the auxiliary contact 250.

[0195] The auxiliary contact terminal 472 is coupled to the auxiliary contact plate 471. The auxiliary contact terminal 472 is located above the auxiliary contact plate 471. In other words, the auxiliary contact terminal 472 is disposed opposite to the auxiliary contact housing frame 473 with the auxiliary contact plate 471 interposed therebetween.

[0196] The auxiliary contact terminal 472 is coupled to the auxiliary contact 250. Regardless of the movement of the movable shaft 430, the auxiliary contact terminal 472 remains at a predetermined position, so that the auxiliary contact 250 and the auxiliary contact terminal 472 can maintain contact and power supply during operation of the electronic contactor 10.

[0197] A plurality of auxiliary contact terminals 472 may be provided. The plurality of auxiliary contact terminals 472 are separated from each other and can be respectively coupled to and energized by the plurality of auxiliary contacts 250. In the illustrated embodiment, two auxiliary contact terminals 472 are provided and are separated from each other along the length direction (i.e., the front-to-back direction) of the auxiliary contact plate 471.

[0198] In one embodiment, the auxiliary contact terminal 472 can be elastically coupled to the auxiliary contact 250. In this embodiment, the auxiliary contact terminal 472 can pressurize the auxiliary contact 250 and couple with the auxiliary contact 250 to energize the auxiliary contact 250.

[0199] The auxiliary contact housing frame 473 constitutes another part of the auxiliary contact housing 470. The auxiliary contact housing frame 473 is the part that connects the auxiliary contact housing 470 to the movable frame 420. Specifically, at least a portion of the auxiliary contact housing frame 473 is accommodated in the auxiliary contact housing accommodating portion 421.

[0200] The auxiliary contact housing frame 473 is continuous with the auxiliary contact plate 471 .

[0201] The auxiliary contact housing frame 473 extends vertically (in the illustrated embodiment) along the height direction of the auxiliary contact housing 470. The auxiliary contact housing frame 473 may be continuous with the longitudinal end of the auxiliary contact plate 471 at a predetermined angle.

[0202] A plurality of auxiliary contact housing frames 473 may be provided. The plurality of auxiliary contact housing frames 473 may be spaced apart from each other along the length of the auxiliary contact plate 471. The plurality of auxiliary contact housing frames 473 may surround the movable contact accommodating space 474 and a portion of the upper magnetic yoke 450 at different positions.

[0203] In the illustrated embodiment, a pair of auxiliary contact housing frames 473 are provided, spaced apart in the front-to-back direction. The front auxiliary contact housing frame 473 surrounds the movable contact accommodating space 474 and the upper magnetic yoke 450 from the front. The rear auxiliary contact housing frame 473 surrounds the movable contact accommodating space 474 and the upper magnetic yoke 450 from the rear.

[0204] At this time, the auxiliary contact housing frame 473 may contact the surface of the arc chamber 210. Specifically, the outer surfaces of the auxiliary contact housing frame 473 in the width direction (i.e., the front surface of the front auxiliary contact housing frame 473 and the rear surface of the rear auxiliary contact housing frame 473) may contact the front inner surface and the rear inner surface of the arc chamber 210, respectively.

[0205] Therefore, the auxiliary contact housing 470 can be supported by the arc chamber 210. As a result, the auxiliary contact housing 470 and the movable contact assembly 400 including the auxiliary contact housing 470 can be stably coupled to the switch unit 200.

[0206] A space surrounded by the auxiliary contact plate 471 and the auxiliary contact housing frame 473 may be defined as a movable contact accommodating space 474 .

[0207] The movable contact accommodating space 474 movably accommodates the movable contact 410 and the lower yoke 460. The movable contact 410 and the lower yoke 460 are movable toward and in the opposite direction to the fixed contact 220 while being accommodated in the movable contact accommodating space 474.

[0208] A portion of the upper yoke 450 is accommodated in the movable contact accommodation space 474. A portion of the upper yoke 450 may be coupled to the auxiliary contact plate 471, and the remaining portion may be exposed to the movable contact accommodation space 474. The remaining portion of the upper yoke 450 may be configured to surround the movable contact 410 and the lower yoke 460.

[0209] The movable contact supporting member 480 prevents the movable contact 410 from being arbitrarily separated from the movable shaft 430. The movable contact supporting member 480 is coupled to the movable contact 410 and the shaft support 431, respectively.

[0210] The movable contact support member 480 may be formed to surround at least a portion of the movable contact 410. In the illustrated embodiment, the movable contact support member 480 surrounds a portion of the upper side, a portion of the front side, and a portion of the rear side of the movable contact 410.

[0211] The movable contact support member 480 is coupled to the shaft support 431 . One side of the movable contact support member 480 in the height direction (the lower side in the illustrated embodiment) may be fixedly coupled to the shaft support 431 .

[0212] There may be a plurality of movable contact support members 480. The plurality of movable contact support members 480 may be disposed separately from each other along the length direction of the movable contact 410. The plurality of movable contact support members 480 may support the movable contact 410 at different positions.

[0213] In the illustrated embodiment, a pair of movable contact support members 480 are provided and are spaced apart from each other in the left-right direction. The pair of movable contact support members 480 are disposed opposite to each other with the auxiliary contact housing 470 interposed therebetween.

[0214] The movable contact support member 480 can be divided into multiple continuous sections. In the illustrated embodiment, the movable contact support member 480 includes: a first extension located at the front, extending vertically and surrounding the front side of the movable contact 410; a second extension located at the top, extending front-to-back and surrounding the top side of the movable contact 410; and a third extension located at the rear, extending vertically and surrounding the rear side of the movable contact 410.

[0215] At this time, the lower ends of the first and third extensions are connected to the shaft bracket 431. The upper ends of the first and third extensions respectively form a predetermined angle with the front and rear ends of the second extension and are continuous. In one embodiment, the predetermined angle can be a right angle.

[0216] Furthermore, the movable contact support member 480 can be configured to support the movable contact 410 in the width direction rather than in the surface direction. In other words, the movable contact support member 480 can support the movable contact 410 in a line contact configuration rather than in a surface contact configuration. Consequently, the rigidity of the movable contact support member 480 against the shaking force applied by the movable contact 410 is increased, effectively preventing the movable contact 410 from shaking arbitrarily.

[0217] In one embodiment, the movable contact supporting member 480 may be configured to be in contact with the movable contact 410. In such an embodiment, the movable contact 410 may be more effectively prevented from being rotated or separated.

[0218] In another embodiment, a groove corresponding to the movable contact support member 480 may be formed in the movable contact 410. In this embodiment, the coupled state of the movable contact 410 and the movable contact support member 480 can be maintained more stably.

[0219] As described above, when the movable iron core 320 moves, the movable shaft 430 coupled thereto can move together. At this time, the movable contact 410, movable spring 440, lower magnetic yoke 460, and movable contact support member 480 move together with the movable shaft 430, but the auxiliary contact housing 470 and the upper magnetic yoke 450 coupled thereto do not move.

[0220] Therefore, the force required to move the other structures of the movable contact 410 can be reduced compared to the case where the auxiliary contact housing 470 and the upper yoke 450 move together with the movable shaft 430. Therefore, even if the strength of the magnetic force between the fixed iron core 310 and the movable iron core 320 is reduced, the movement of the movable contact 410 and the contact with the fixed contact 220 can be easily performed.

[0221] Furthermore, the upper yoke 450 can be maintained at a preset position regardless of the movement of the movable shaft 430. Therefore, the distance between the upper yoke 450 and the lower yoke 460 can be reduced compared to the case where the upper yoke 450 and the movable shaft 430 move together.

[0222] As a result, a sufficiently large magnetic attraction force is applied between the upper yoke 450 and the lower yoke 460 , thereby effectively canceling out the electromagnetic repulsion force generated between the fixed contact 220 and the movable contact 410 .

[0223] Reference Figure 8 , the working process of the electronic contactor 10 according to the embodiment of the present invention can be shown as an example.

[0224] Figure 8 Part (a) shows a state where the electronic contactor 10 cuts off the power supply between the external power source (not shown) and the load (not shown). In the illustrated embodiment, the movable contact 410 and the fixed contact 220 are arranged vertically separated.

[0225] At this time, the lower end of the upper magnetic yoke 450 is located lower than the upper end of the lower magnetic yoke 460. In the embodiment, the upper magnetic yoke 450 and the lower magnetic yoke 460 may be arranged to overlap at least partially in the horizontal direction.

[0226] Figure 8 Part (b) shows the electronic contactor 10 in a state where it is electrically connected to an external power source (not shown) and a load (not shown). In the illustrated embodiment, the movable contact 410 is in contact with the fixed contact 220. Therefore, an electromagnetic repulsive force can be generated between the movable contact 410 and the fixed contact 220.

[0227] Here, to achieve the electrically connected state, operating power is supplied and magnetic attraction is generated in the fixed core 310, resulting in the movable core 320 moving toward the fixed core 310. At this time, by increasing the magnetic force of the magnetic body 380, a lower operating power than the conventional operating power can be supplied.

[0228] At this point, the lower end of the upper magnetic yoke 450 is positioned lower than the upper end of the lower magnetic yoke 460. In other words, the upper magnetic yoke 450 and the lower magnetic yoke 460 are arranged so as to at least partially overlap in the horizontal direction. It should be understood that the overlapping area of ​​the upper magnetic yoke 450 and the lower magnetic yoke 460 when they are electrically connected is larger than the overlapping area of ​​the upper magnetic yoke 450 and the lower magnetic yoke 460 when they are electrically disconnected.

[0229] Therefore, when the movable contact 410 is in contact with the fixed contact 220 and energized, the strength of the magnetic attraction force formed between the upper yoke 450 and the lower yoke 460 can be further increased. Therefore, the contact state between the movable contact 410 and the fixed contact 220 can be stably formed and maintained.

[0230] Although the embodiments of the present invention have been described, the concept of the present invention is not limited to the embodiments presented in this specification. Ordinary technicians who understand the concept of the present invention can easily propose other embodiments within the scope of the same concept by addition, change, deletion and addition, but this also falls within the scope of the concept of the present invention.

[0231] Industrial Applicability

[0232] The present invention can be applied to the field of electrical and electronic connectors.

Claims

1. An electronic contactor having a structure for improving operating performance, in, include: Fixed contacts; a movable contact located adjacent to the fixed contact and in contact with or separated from the fixed contact; a movable iron core coupled to the movable contact so as to be movable in either a direction toward the movable contact or a direction away from the movable contact; a fixed iron core magnetized to apply an attractive force to the movable iron core; and A magnetic body is arranged adjacent to the movable iron core to increase magnetic force.

2. The electronic contactor having a structure for improving operating performance according to claim 1, wherein: The magnetic body is a permanent magnet.

3. The electronic contactor having a structure for improving operating performance according to claim 1, wherein: There are multiple magnetic bodies so that the magnetic force can be adjusted.

4. The electronic contactor having a structure for improving operating performance according to claim 1, wherein: The movable shaft comprises a movable shaft, one end of which is fixed to the movable contact and moves together with the movable contact, and the other end of which is fixed to the movable iron core. The movable shaft is arranged to penetrate the movable iron core, and the magnetic body is formed with a through hole and is arranged to surround the movable shaft.

5. The electronic contactor having a structure for improving operating performance according to claim 4, wherein: The magnetic bodies are in plurality, and each of the magnetic bodies is arranged to form a layer along the outer surface of the movable shaft, thereby adjusting the number of the magnetic bodies.

6. The electronic contactor having a structure for improving operating performance according to claim 5, wherein: In a state where the magnetic body is arranged, the end portion of the movable shaft is welded to fix the movable shaft and the movable iron core.

7. The electronic contactor having a structure for improving operating performance according to claim 4, wherein: An operating voltage supplied to the fixed iron core is adjusted according to the number of the magnetic bodies.

8. The electronic contactor having a structure for improving operating performance according to claim 4, wherein: The movable iron core comprises: an upper surface having the through hole formed thereon; and The side surface extends downward in the opposite direction from the upper surface, has an opening formed at a lower portion, and has an internal space for accommodating the magnetic body.

9. The electronic contactor having a structure for improving operating performance according to claim 8, wherein: include: The partition wall extends along the through hole to the opening of the side surface so as to prevent the movable shaft from being in close contact with the magnetic body.

10. The electronic contactor having a structure for improving operating performance according to claim 9, wherein: The partition wall and the side surface are formed in a cylindrical shape.

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