Electromagnetic contactor having structure for improving operation performance

Abstract

Disclosed is an electromagnetic contactor having a structure for preventing a welding spatter from penetrating into same, and for improving operation performance. The electromagnetic contactor having a structure for improving operation performance, according to an aspect of the present invention, may comprise: a fixed contact point; a movable contact point which is positioned to be adjacent to the fixed contact point and is in contact with or spaced apart from the fixed contact point; a movable core coupled to the movable contact point so as to be movable in any one of a direction toward the movable contact point and a direction opposite to the movable contact point; a fixed core positioned between the movable contact point and the movable core and magnetized to apply a suction force to the movable core; and a magnetic body provided in an inner space provided in the movable core to add a magnetic force so as to lower an operation voltage of the movable core.

Description

Electronic contactor with improved operating performance structure

[0001] The present invention relates to an electronic contactor, and more particularly, to an electronic contactor having a structure for preventing internal penetration of welding spatter and improving operating performance.

[0002] Typically, an electromagnetic contactor is a device that forms contact between contacts through the magnetic attraction generated by applying current to an electromagnet. When the electromagnet generates magnetic attraction, the movable contact moves toward the fixed contact, bringing them into contact.

[0003] The fixed contacts of the electromagnetic contactor are electrically connected to an external power source and a load, respectively. When the fixed contacts and the movable contacts come into contact, the external power source and the load can be electrically connected to each other. When the current supply to the electromagnet is removed, the magnetic attraction formed by the electromagnet is also released. Consequently, the movable contacts are separated from the fixed contacts, thereby releasing the current flow between the external power source and the load.

[0004] Typically, an electromagnetic contactor is equipped with a movable core that moves toward a fixed core by a magnetic attractive force, and a core portion is formed by including the fixed core and the movable core. The core portion provides a driving force for the movable contact to move toward the fixed contact when an external control power is applied. In addition, the core portion provides a driving force for the movable contact in contact with the fixed contact to move away from the fixed contact when the external control power is cut off.

[0005] Korean Patent Document No. 10-2452354 discloses a direct current relay. Specifically, it discloses an electromagnetic contactor capable of connecting or disconnecting an external power source and load by contacting and opening a moving contact and a fixed contact.

[0006] However, in order to improve the operating performance according to the DC relay drive disclosed in the above-mentioned prior art, the structure has a structure in which the area of ​​the movable core of the core part is expanded and the inside is made into an empty space.

[0007] However, the structure of these prior literatures makes it difficult to control the operating performance, which results in reduced mass productivity, and the additional processing required when manufacturing the movable core results in minimal cost reduction.

[0008] In addition, the DC relay disclosed in the above-mentioned prior art involves welding the movable shaft and the movable core to secure them together. However, there was a problem in that spatter, which is droplets of molten metal or non-metallic material that scatter or fly away during the welding process, could be generated and enter the internal space of the movable core, potentially causing assembly problems.

[0009] The present invention is intended to solve the above problems, and the purpose of the present invention is to provide an electromagnetic contactor having an operating performance improvement structure that can immediately respond to the required performance by providing a magnetic substance in an internal space formed in a movable core of a core part, thereby maintaining the maximum advantage corresponding to the structure of the movable core, while maximizing the operating performance of the electromagnetic contactor, and adjusting the number of magnetic substances provided according to the required operating performance.

[0010] Another object of the present invention is to provide an electromagnetic contactor having an operating performance-enhancing structure capable of preventing spatter that may be generated during welding from entering the empty space by providing a magnetic material in the empty space inside the movable core of the core part and welding the movable core to the movable shaft.

[0011] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0012] According to one aspect of the present invention, an electromagnetic contactor having an operation performance enhancement structure is provided, which comprises: a fixed contact; a movable contact positioned adjacent to the fixed contact and in contact with or spaced apart from the fixed contact; a movable core coupled to the movable contact so as to be movable in either a direction toward the movable contact or a direction opposite to the movable contact; a fixed core magnetized to apply an attractive force to the movable core; and a magnetic body installed adjacent to the movable core to apply a magnetic force.

[0013] At this time, the magnetic body may be a permanent magnet.

[0014] At this time, the magnetic body may be formed in multiple pieces so as to control the magnetic force.

[0015] At this time, a movable shaft having one end fixed to the movable contact side and moving together with the movable contact and the other end fixed to the movable core is included, the movable shaft is installed to penetrate the movable core, and the magnetic body can be arranged to surround the movable shaft by forming a through hole.

[0016] At this time, the magnetic body is composed of a plurality of magnetic bodies, and the number of magnetic bodies can be controlled by installing each magnetic body to form a layer along the outer surface of the movable shaft.

[0017] At this time, with the magnetic body placed, the end of the movable shaft can be welded to fix the movable shaft and the movable core.

[0018] At this time, the operating voltage provided to the fixed core can be adjusted according to the number of the magnetic materials.

[0019] At this time, the movable core may include an upper surface on which the through hole is formed; and a side surface extending in the opposite direction from the upper surface to the lower surface, and having an opening formed at the lower surface and an internal space formed to accommodate the magnetic body.

[0020] At this time, the movable shaft may include a baffle extending along the through hole to the opening on the side so as not to come into contact with the magnetic body.

[0021] At this time, the bulkhead and the side surface can be formed in a cylindrical shape.

[0022] According to the above configuration, an electronic contactor having an operating performance improvement structure according to one aspect of the present invention can provide maximum performance by lowering the operating voltage according to the magnetic force added during operation with the fixed core by providing a magnetic body inside the movable core.

[0023] An electronic contactor having a structure for improving operating performance according to one aspect of the present invention can implement an operating voltage desired by a consumer by adjusting the number of magnetic materials provided inside the movable core.

[0024] An electronic contactor having a structure for improving operating performance according to one aspect of the present invention can prevent spatter, which causes malfunction, from penetrating into the component in advance because welding is performed with a movable shaft while a magnetic material is provided inside the movable core.

[0025] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0026] FIG. 1 is a perspective view illustrating an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention.

[0027] Figure 2 is a cross-sectional view taken along line AA shown in Figure 1.

[0028] Figure 3 is a cross-sectional view taken along line BB shown in Figure 1.

[0029] FIG. 4 is an exploded perspective view illustrating an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention.

[0030] FIGS. 5 and 6 are exploded perspective views viewed from different directions, showing important elements of some components of an electronic contactor having a performance enhancement structure according to an embodiment of the present invention.

[0031] FIG. 7 is an exploded perspective view showing the coupling relationship between a movable core and peripheral components, which are some components of an electronic contactor having a structure for improving operating performance according to an embodiment of the present invention.

[0032] FIG. 8 is a cross-sectional view showing the operation of an electronic contactor having a performance-enhancing structure according to an embodiment of the present invention.

[0033] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts irrelevant to the description are omitted in the drawings, and the same reference numerals designate identical or similar components throughout the specification.

[0034] The words and terms used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, in accordance with the principles by which the inventor can define terms and concepts in order to best explain his or her invention.

[0035] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to a preferred embodiment of the present invention, and do not represent all of the technical ideas of the present invention, so there may be various equivalents and modified examples that can replace the configuration at the time of filing of the present invention.

[0036] In this specification, terms such as “include” or “have” are intended to describe the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0037] Hereinafter, an electronic connector having an operation performance improvement structure according to an embodiment of the present invention will be described with reference to the drawings.

[0038] The terms “upper”, “lower”, “left”, “right”, “front” and “rear” used in the following description shall be understood with reference to the coordinate system depicted throughout the attached drawings.

[0039] Referring to FIGS. 1 to 8, an electronic contactor having a structure for improving operational performance according to one embodiment of the present invention is illustrated. An electronic contactor (10) is electrically connected to an external power source (not shown) and a load (not shown), respectively. The electronic contactor (10) can be configured to establish or release an electrical connection 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.

[0040] An electronic contactor (10) according to an embodiment of the present invention includes an upper yoke (450) and a lower yoke (460) for offsetting the electromagnetic repulsive force generated when a fixed contact (220) and a movable contact (410) come into contact. At this time, the upper yoke (450) can be maintained at a specific height regardless of the elevation of a component (i.e., a movable shaft (430)) that is provided to be able to be elevated.

[0041] Accordingly, even if the movable shaft (430) is raised or lowered, the upper yoke (450) and the lower yoke (460) are arranged so that at least a portion overlaps with each other, so that a sufficiently large magnetic attraction force can be formed between them. Accordingly, the electromagnetic repulsive force generated when the fixed contact (220) and the movable contact (410) come into contact can be effectively canceled out.

[0042] In one embodiment, the electronic contactor (10) may be provided with an auxiliary contact housing (470). The auxiliary contact housing (470) may be provided in the movable contact assembly (400) and may be maintained at a specific height regardless of the elevation of the movable shaft (430). The auxiliary contact housing (470) may be electrically connected to an auxiliary contact (250) provided to obtain information on the status of the electronic contactor (10). Therefore, information on the status of the electronic contactor (10) may be stably obtained.

[0043] Furthermore, the electronic contactor (10) is provided with a movable contact support member (480). The movable contact support member (480) is formed to surround the movable contact (410) in one or more directions. The movable contact support member (480) is configured to prevent arbitrary rotation of the movable contact (410).

[0044] In the illustrated embodiment, the electronic contactor (10) includes a housing (100), an opening / closing portion (200), a core portion (300), and a movable contact assembly (400).

[0045] The housing (100) constitutes the outer shape of the electronic contactor (10). A space is formed inside the housing (100) to accommodate each component of the electronic contactor (10). The space in the housing (100) is electrically connected to an external power source (not shown) and a load (not shown), respectively.

[0046] In one embodiment, the space of the housing (100) may accommodate an opening / closing portion (200), a core portion (300), and a movable contact assembly (400). At this time, the fixed contact (220) of the opening / closing portion (200) may be partially exposed to the outside, and may be energized and connected to an external power source (not shown) and a load (not shown), respectively.

[0047] The above space of the housing (100) is connected to the outside. An arc generated when an abnormal current flows and the fixed contact (220) and the movable contact (410) are separated can be discharged to the outside of the housing (100).

[0048] 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).

[0049] In one embodiment, the support plate (130) partially partitions the interior space of the upper housing (110) and the interior space of the lower housing (120). The support plate (130) supports a portion of the movable contact assembly (400) on one side in the height direction, in the illustrated embodiment, on the lower side.

[0050] A through hole is formed in the interior of the support plate (130) in the thickness direction, i.e., in the up-down direction. A movable shaft (430) is accommodated in the through hole of the support plate (130) so as to be able to move up and down.

[0051] The inner housing (140) supports an auxiliary contact (250) and an auxiliary contact cable (260) that 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.

[0052] The inner housing (140) is accommodated in the inner space of the upper housing (110). The inner housing (140) is located within the upper housing (110) and the opening / closing part (200). Specifically, the inner housing (140) is located between the magnet support member (230) and the arc chamber (210).

[0053] The arc chamber (210) can be accommodated in the inner housing (140) through the lower side. The inner housing (140) surrounds the accommodated arc chamber (210) from the outside.

[0054] 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 of an arc generated when the fixed contact (220) and the movable contact (410) are separated.

[0055] The switching unit (200) is configured to allow or block the current flow between an external power source (not shown) and a load (not shown) that are electrically connected to the electronic contactor (10) together with a movable contact assembly (400).

[0056] In the illustrated embodiment, the opening (200) includes an arc chamber (210), a fixed contact (220), a magnetic support member (230), a magnetic member (240), an auxiliary contact (250), and an auxiliary contact cable (260).

[0057] The arc chamber (210) accommodates a fixed contact (220) and a movable contact (410).

[0058] The movable contact (410) can be movably accommodated in the arc chamber (210). When an abnormal current is passed and the fixed contact (220) and the movable contact (410) are separated, the arc chamber (210) can prevent the generated arc from leaking out randomly. That is, the arc chamber (210) is configured to prevent damage to other components of the electronic contactor (10) due to the arc.

[0059] A magnetic field formed by a magnet member (240) can be formed inside the arc chamber (210). The magnetic field can form a path through which the generated arc is extinguished and discharged to the outside.

[0060] A fixed contact (220) is coupled to the arc chamber (210).

[0061] The fixed contact (220) is a portion of the electronic contactor (10) that is electrically connected to an external power source (not shown) or a load (not shown). The fixed contact (220) is connected to the upper housing (110), the inner housing (140), and the arc chamber (210), respectively. The fixed contact (220) extends in the height direction of the housing (100), i.e., in the vertical direction in the illustrated embodiment.

[0062] One side of the fixed contact (220) in the height direction, the upper side in the illustrated embodiment, is exposed to the outside of the upper housing (110). An external power source (not shown) or load (not shown) can be electrically connected to the fixed contact (220) through the upper side.

[0063] It will be understood that the contact and separation between the fixed contact (220) and the movable contact (410) is achieved by movement of the movable contact (410).

[0064] The magnetic support member (230) is combined with the magnetic member (240) to support it.

[0065] By means of the magnet support member (230), the magnet member (240) can be maintained at a preset position to form a magnetic field inside the arc chamber (210).

[0066] The magnet member (240) forms a magnetic field in the internal space of the arc chamber (210). The magnetic field formed by the magnet member (240) can provide a magnetic force that induces an arc. The arc can be extinguished and discharged along a path induced by the magnetic field.

[0067] The magnetic member (240) may be provided in two numbers, including a first magnetic member positioned on the left and a second magnetic member positioned on the right.

[0068] The auxiliary contact (250) is electrically connected to a substrate member (not shown) for collecting information on the operating status of the electronic contactor (10). Information collected from the substrate member (not shown) can be transmitted to an external control unit (not shown) via the auxiliary contact (250).

[0069] Accordingly, the operating status of the electronic contactor (10) can be easily recognized even without disassembling the electronic contactor (10).

[0070] The auxiliary contact (250) can be electrically connected to the auxiliary contact cable (260).

[0071] The auxiliary contact (250) is positioned between a pair of fixed contacts (220). In the illustrated embodiment, the auxiliary contact (250) is positioned between a pair of fixed contacts (220) along the longitudinal direction of the housing (100), i.e., the left-right direction.

[0072] The auxiliary contact cable (260) electrically connects the auxiliary contact (250) to an external control unit (not shown). The auxiliary contact cable (260) is electrically connected to the auxiliary contact (250) and an external control unit (not shown), respectively.

[0073] The core part (300) provides a driving force for the movable contact (410) to move toward the fixed contact (220) when an external control power is applied. In addition, the core part (300) provides a driving force for the movable contact (410) in contact with the fixed contact (220) to move away from the fixed contact (220) when the external control power is cut off.

[0074] The core part (300) is coupled to the housing (100). Specifically, some components of the core part (300) are fixedly arranged in a space formed inside the lower housing (120). In addition, other components of the core part (300) are movably arranged in a space formed inside the lower housing (120). At this time, the other components of the core part (300) can be arranged to be movable in the height direction of the lower housing (120), i.e., in the up-down direction.

[0075] The core part (300) is coupled with a movable contact assembly (400). The movable core (320), which will be described later, is coupled with a movable shaft (430) of the movable contact assembly (400) and can move together.

[0076] 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).

[0077] The fixed core (310) is magnetized by an applied control power source and provides a magnetic attractive force to the movable core (320). By the magnetic attractive force applied by the fixed core (310), the movable core (320) and the movable shaft (430) coupled thereto can be moved toward the fixed core (310).

[0078] Accordingly, the movable contact (410) coupled with the movable shaft (430) also moves together, so that the movable contact (410) and the fixed contact (220) can come into contact with each other and conduct electricity.

[0079] The fixed core (310) may be provided in any form that can be magnetized by an external control power source and apply a magnetic attraction force to the movable core (320). In one embodiment, the fixed core (310) may be provided in the form of an electromagnet.

[0080] The fixed core (310) is coupled to the support plate (130). The fixed core (310) is accommodated in a space formed inside the cylinder (370). One side in the height direction of the fixed core (310), the upper side in the illustrated embodiment, is fixedly coupled to the support plate (130). The other side in the height direction of the fixed core (310), the lower side in the illustrated embodiment, is elastically supported by a return spring (360).

[0081] The movable core (320) is moved toward the fixed core (310) by the magnetic attraction force applied by the fixed core (310). In addition, the movable core (320) is moved against the fixed core (310) by the elastic force applied by the return spring (360).

[0082] The movable core (320) is accommodated in a space formed inside the cylinder (370).

[0083] The movable core (320) is positioned facing the support plate (130) with the fixed core (310) interposed therebetween. In the illustrated embodiment, the movable core (320) is positioned below the fixed core (310).

[0084] The movable core (320) is coupled to the movable shaft (430). When the movable core (320) moves, the movable shaft (430) can also move. Accordingly, some components provided in the movable contact assembly (400) can move together with the movable core (320).

[0085] The movable core (320) is elastically supported by a return spring (360). Specifically, one side in the height direction of the movable core (320), the upper side in the illustrated embodiment, is supported by one end in the height direction of the return spring (360).

[0086] The movable core (320) may be provided in any shape that can be moved toward the fixed core (310) by a magnetic attraction force applied by the fixed core (310). In one embodiment, the movable core (320) may be formed of a metal material such as iron (Fe) that can be magnetized.

[0087] The movable core (320) may have a magnetic body (380) in its internal space.

[0088] The magnetic body (380) is installed in the internal space provided in the movable core (320) and can add magnetic force to lower the operating voltage of the movable core (320).

[0089] The magnetic body (380) may be formed in multiple pieces to allow for controlling the magnetic force. In the illustrated embodiment, the magnetic body (380) may be formed in three pieces and may be formed 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. A movable shaft (430) may pass through the through hole (321a).

[0090] In the illustrated embodiment, the magnetic body (380) does not need a separate fixing means because the movable core (320) itself is made of a material to which it is attached by magnetic force, and can be sufficiently fixed to the internal space of the movable core (320) by magnetic force.

[0091] The magnetic body (380) is composed of a plurality of magnetic bodies, and each magnetic body (380) is installed to form a layer along the outer surface of the movable shaft (430), thereby allowing the number of magnetic bodies (380) to be adjusted. By adjusting the number of magnetic bodies (380) in this way, the operating voltage of the movable core (320) can be adjusted.

[0092] In the illustrated embodiment, for example, if the operating voltage for the existing movable core (320) to operate is 7 to 8 V, the operating voltage can be lowered to 4 V or less by filling the internal space with the magnetic body (380) to the maximum. Of course, even in this case, the operating voltage can be adjusted to between 4 and 7 V by adjusting the number of magnetic bodies (380).

[0093] With the magnetic body (380) positioned, the end of the movable shaft (430) can be welded to the movable core (320) so that the movable shaft (430) and the movable core (320) can be fixed. At this time, since the magnetic body (380) fills the internal space, it is possible to prevent welding spatter from penetrating into the internal space during welding. Accordingly, malfunction due to spatter of the movable core (320) can be prevented in advance.

[0094] In the illustrated embodiment, the movable core (320) may include an upper surface (321) in which the through hole (321a) is formed.

[0095] The movable core (320) may extend from the upper surface to the lower side in the opposite direction, have an opening formed at the lower side, and may include a side surface (322) in which the internal space for accommodating the magnetic body (380) is formed.

[0096] 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 coming into 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.

[0097] The end of the bulkhead (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) are fixed and can move together. Of course, since the magnetic body (380) is inside, the penetration of welding spatter into the inside can be prevented.

[0098] By providing the magnetic body (380) in the movable core (320) in this way, the operating voltage for the movable core (320) to operate can be lowered compared to before, thereby increasing the operating efficiency, and by adjusting the number of magnetic bodies (380), the operating voltage desired by the customer can be adjusted to a certain range.

[0099] The core yoke (330) functions as a fixed core with respect 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.

[0100] 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). A support plate (130) is positioned on one side of the core yoke (330) in the height direction, the upper side in the illustrated embodiment.

[0101] The core yoke (330) is arranged to surround the bobbin (340) and the coil (350). The core yoke (330) is positioned adjacent to the coil (350) and can be magnetized by the magnetic field formed by the coil (350).

[0102] The bobbin (340) supports the coil (350). The coil (350) can be accommodated in the housing (100) while being wound around the bobbin (340). That is, the bobbin (340) functions as a kind of bobbin.

[0103] The bobbin (340) is coupled to the housing (100). Specifically, the bobbin (340) is accommodated in a space formed inside the lower housing (120). As described above, the bobbin (340) is positioned radially inward of the core yoke (330). A hollow space is formed inside the bobbin (340) so that a cylinder (370) can be accommodated therein.

[0104] The coil (350) receives control power from the outside and forms a magnetic field.

[0105] The magnetic field formed by the coil (350) can magnetize the core yoke (330) and form a magnetic force to move the movable core (320) toward the fixed core (310).

[0106] 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) can be wound along the outer circumference of the bobbin (340).

[0107] The return spring (360) provides a restoring force for the movable core (320) that has moved toward the fixed core (310) to move away from the fixed core (310). The return spring (360) is located between the fixed core (310) and the movable core (320). The return spring (360) is accommodated in the internal space of the cylinder (370).

[0108] The return spring (360) may be provided in any form that can store restoring force as the movable core (320) moves toward the fixed core (310) and provide the stored restoring force to the movable 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.

[0109] In the above embodiment, the return spring (360) extends in the height direction of the housing (100), i.e., in the vertical direction. One end of the return spring (360) in the extension direction is in contact with the fixed core (310). The other end of the return spring (360) in the extension direction is in contact with the movable core (320). That is, the return spring (360) elastically supports the movable core (320).

[0110] The cylinder (370) movably accommodates the movable core (320) and the movable shaft (430) coupled to the movable core (320). In the illustrated embodiment, the cylinder (370) extends in the height direction of the housing (100), i.e., in the vertical direction, so as to accommodate the movable core (320) and the movable shaft (430) in a movable manner.

[0111] The cylinder (370) is coupled to the bobbin (340). The cylinder (370) can be positioned in a hollow space formed inside the bobbin (340).

[0112] Referring to FIGS. 1 to 8, an electronic contactor (10) according to an embodiment of the present invention includes a movable contact assembly (400).

[0113] A movable contact assembly (400) according to an embodiment of the present invention includes a plurality of yokes (450, 460) configured to offset an electromagnetic repulsive force generated when a fixed contact (220) and a movable contact (410) come into contact. In particular, any one yoke (450) among the plurality of yokes (450, 460) can be maintained at a preset position regardless of movement of the movable contact (410).

[0114] Accordingly, compared to the case where all of the multiple yokes (450, 460) are moved, the area in which the multiple yokes (450, 460) are arranged to overlap each other can be increased. Accordingly, the magnetic attraction between the multiple yokes (450, 460) is increased, so that the electromagnetic repulsive force generated between the fixed contact (220) and the movable contact (410) can be effectively canceled out.

[0115] In addition, the movable contact assembly (400) according to an embodiment of the present invention includes an auxiliary contact housing (470) that is electrically connected to the auxiliary contact (250). The auxiliary contact housing (470) is provided with a substrate member (not shown) so as to transmit information on the operating state of the electronic contactor (10) through the auxiliary contact (250).

[0116] Furthermore, in the movable contact assembly (400) according to an embodiment of the present invention, one of the yokes (450) can be coupled with an auxiliary contact housing (470). Accordingly, the overall volume of the movable contact assembly (400) can be reduced, and the convenience of assembly can be improved.

[0117] Furthermore, any one of the yokes (450) can be maintained at a preset position regardless of movement of the movable contact (410).

[0118] 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).

[0119] The movable contact (410) is configured to be in contact with or separated from the fixed contact (220).

[0120] The movable contact (410) can be brought into contact with or separated from a plurality of fixed contacts (220) simultaneously. When the movable contact (410) and the fixed contact (220) are brought into contact with each other, an external power source (not shown) and a load (not shown) that are electrically connected to the electronic contactor (10) can be electrically connected to each other.

[0121] The movable contact (410) is accommodated in the housing (100). Specifically, the movable contact (410) is movably accommodated within the arc chamber (210) accommodated within the inner space of the upper housing (110). In one embodiment, the movable contact (410) may be accommodated within the arc chamber (210) so as to be movable in the height direction of the upper housing (110), i.e., in the up-down direction.

[0122] The movable contact (410) is movably coupled to the movable frame (420). The movable contact (410) can be moved relative to the movable frame (420). That is, the movable frame (420) is coupled to the support plate (130) and does not move arbitrarily.

[0123] The movable contact (410) is coupled to the movable shaft (430). When the movable core (320) coupled to the movable shaft (430) moves, the movable contact (410) can also move together.

[0124] The movable contact (410) is coupled to a movable spring (440). Specifically, the movable contact (410) is elastically supported by the movable spring (440). In the illustrated embodiment, the lower portion of the movable contact (410) is elastically supported by the movable spring (440).

[0125] The movable contact (410) is positioned adjacent to the upper yoke (450). The movable contact (410) may be arranged to be at least partially surrounded by the upper yoke (450). In the illustrated embodiment, one side in the height direction of the movable contact (410), i.e., the upper side, and each side in the width direction, i.e., the front side and the rear side, are surrounded by the upper yoke (450).

[0126] The movable contact (410) is positioned adjacent to the lower yoke (460). The movable contact (410) can be in contact with the lower yoke (460) and supported by the lower yoke (460). In the illustrated embodiment, the lower portion of the movable contact (410) is supported by the lower yoke (460).

[0127] The movable contact (410) can be moved together with the lower yoke (460).

[0128] The movable contact (410) is positioned adjacent to the auxiliary contact housing (470). The movable contact (410) may be arranged to be at least partially surrounded by the auxiliary contact housing (470). In the illustrated embodiment, one side in the height direction of the movable contact (410), i.e., the upper side, and each side in the width direction, i.e., the front side and the rear side, are surrounded by the auxiliary contact housing (470).

[0129] The movable contact (410) may be supported by a movable contact support member (480). As will be described later, the movable contact support member (480) is formed to surround the movable contact (410) at least at one location along the longitudinal direction of the movable contact (410). In the illustrated embodiment, one side in the height direction of the movable contact (410), i.e., the upper side, and each side in the width direction, i.e., the front side and the rear side, are surrounded by the movable contact support member (480).

[0130] The movable contact (410) may have any shape that can be brought into contact with and conduct electricity to multiple fixed contacts (220) simultaneously. In the illustrated embodiment, the movable contact (410) has a polygonal prism shape that has a length in the left-right direction, a width in the front-back direction, and a height in the up-down direction.

[0131] At this time, the extension direction of the movable contact (410), i.e., the length in the left-right direction, can be formed to be greater than the distance at which a pair of fixed contacts (220) are spaced from each other. By the above structure, the movable contact (410) can be in contact with a plurality of fixed contacts (220) simultaneously.

[0132] A movable frame (420) is positioned adjacent to the movable contact (410).

[0133] The movable frame (420) is a configuration that is mounted on the support plate (130) among the configurations 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.

[0134] A through hole is formed inside the movable frame (420). A movable shaft (430) can be connected to the through hole so as to be able to move up and down.

[0135] The movable shaft (430) transmits the movement of the movable core (320) to the movable contact (410). The movable shaft (430) can be coupled to the movable core (320) and the movable contact (410) and move together.

[0136] The movable shaft (430) extends in the height direction of the housing (100), in the vertical direction in the illustrated embodiment. One side of the movable shaft (430) in the height direction, in the illustrated embodiment, the upper side, is coupled with the movable contact (410) via the shaft holder (431). The other side of the movable shaft (430) in the height direction, in the illustrated embodiment, the lower side, is coupled with the movable core (320).

[0137] The movable shaft (430) is coupled to the support plate (130). Specifically, the movable shaft (430) is movably penetrated through an opening formed inside the support plate (130).

[0138] The movable shaft (430) is coupled to the movable core (320). The movable shaft (430) penetrates a hollow space formed inside the return spring (360) and is movably received in the cylinder (370).

[0139] The movable shaft (430) is coupled to the movable contact (410). The movable shaft (430) can move together with the movable contact (410).

[0140] The movable shaft (430) is coupled to the movable frame (420). Specifically, the movable shaft (430) penetrates an opening formed inside the movable frame (420). The movable shaft (430) is coupled to the movable frame (420) so as to be movable.

[0141] The movable shaft (430) supports the movable spring (440). Specifically, the movable shaft (430) comes into contact with one longitudinal side of the movable spring (440), i.e., the lower side. Accordingly, the movable contact point (410) and the lower yoke (460) can be elastically supported by the movable spring (440).

[0142] The movable shaft (430) is coupled to the movable contact support member (480). The movable shaft (430) can move together with the movable contact support member (480).

[0143] In the illustrated embodiment, the movable shaft (430) includes a shaft holder (431).

[0144] The shaft holder (431) is a part where the movable shaft (430) is coupled with other components of the movable contact assembly (400). In the illustrated embodiment, the shaft holder (431) is coupled with the movable contact (410), the movable spring (440), the lower yoke (460), and the movable contact support member (480).

[0145] Specifically, the movable contact (410) and the lower yoke (460) are arranged to face the shaft holder (431) with the movable spring (440) interposed therebetween. The movable contact (410) and the lower yoke (460) are elastically supported by the movable spring (440).

[0146] The shaft holder (431) is positioned on one side of the longitudinal direction of the movable shaft (430), in the illustrated embodiment, on the upper side. The shaft holder (431) is positioned on the upper side of the support plate (130) and the movable frame (420). At this time, the shaft holder (431) may be formed to have a cross-sectional area greater than the cross-sectional area of ​​the through-holes formed in the interior of the support plate (130) and the movable frame (420), respectively.

[0147] Accordingly, the shaft holder (431) cannot pass through the through hole formed inside the support plate (130) or the movable frame (420), and can be maintained on the upper side of the support plate (130) and the movable frame (420).

[0148] Additionally, the position in which the movable shaft (430) can move in the direction opposite to the fixed contact (220), i.e. downward in the illustrated embodiment, may be limited to the position in which the movable shaft (430) comes into contact with the movable frame (420).

[0149] 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) and the lower yoke (460) and the shaft holder (431). The movable spring (440) is located on the lower side of the movable contact (410) and the lower yoke (460).

[0150] The movable spring (440) extends between the shaft holder (431) and the lower yoke (460). In the illustrated embodiment, the movable spring (440) extends in the extension direction of the movable shaft (430), i.e., in the vertical direction. One end of the movable spring (440) in the extension direction, i.e., the upper end, is in contact with the lower yoke (460). The other end of the movable spring (440) in the extension direction, i.e., the lower end, is supported by the shaft holder (431).

[0151] When the movable shaft (430) moves toward the fixed contact (220), the movable spring (440) is pressed against the shaft holder (431) to store restoring force and can move together. The stored restoring force presses the movable contact (410) toward the fixed contact (220), so that the contact state between the fixed contact (220) and the movable contact (410) can be stably maintained.

[0152] The upper yoke (450) forms a magnetic attraction force together with the lower yoke (460). The magnetic attraction force formed by the upper yoke (450) and the lower yoke (460) can offset the electromagnetic repulsive force generated when the fixed contact (220) and the movable contact (410) come into contact. Accordingly, the formation and maintenance of the contact state between the fixed contact (220) and the movable contact (410) can proceed stably.

[0153] The upper yoke (450) may be provided in any shape that can form a magnetic attraction force together with the lower yoke (460). In one embodiment, the upper yoke (450) may be provided with a magnetic material, such as a permanent magnet.

[0154] The upper yoke (450) is positioned adjacent to the movable contact (410). At this time, the upper yoke (450) may be positioned so as to not contact the movable contact (410), but at least partially surround the movable contact (410).

[0155] The upper yoke (450) is positioned adjacent to the lower yoke (460). The upper yoke (450) may be positioned to surround the lower yoke (460) from the outside.

[0156] An electronic contactor (10) according to an embodiment of the present invention can be configured such that the separation distance between the upper yoke (450) and the lower yoke (460) is minimized. This is achieved by the combination of the upper yoke (450) and the auxiliary contact housing (470).

[0157] That is, the upper yoke (450) is coupled with the auxiliary contact housing (470) and does not move together with the movable contact (410) or the movable shaft (430). In other words, the upper yoke (450) can be maintained in a preset position by the auxiliary contact housing (470) coupled with the fixedly arranged movable frame (420).

[0158] As illustrated in FIGS. 2 to 8, the upper yoke (450) is indirectly coupled to the movable frame (420) by 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).

[0159] As the upper yoke (450) is coupled with the auxiliary contact housing (470), the shaft holder (431) can be reduced in volume by the portion where the upper yoke (450) is coupled. In addition, the magnitude of the force required to move the movable core (320) can also be reduced by the weight of the upper yoke (450) and the reduction in the volume of the shaft holder (431).

[0160] The upper yoke (450) may be divided into multiple parts. One part of the upper yoke (450) may be accommodated in the auxiliary contact housing (470) and not exposed to the outside. Another part of the upper yoke (450) may be exposed to the movable contact accommodation space (474) provided in the auxiliary contact housing (470).

[0161] In the illustrated embodiment, the upper yoke (450) comprises a first extension portion (451) and a second extension portion (452). The first extension portion (451) extends in the longitudinal direction of the auxiliary contact housing (470), in the front-back direction in the illustrated embodiment. The first extension portion (451) is accommodated inside the auxiliary contact housing (470) and is not exposed to the outside. The first extension portion (451) surrounds the movable contact (410) and the lower yoke (460) on one side in the height direction, in the illustrated embodiment, on the upper side.

[0162] The first extension (451) may have a shape corresponding to the shape of the auxiliary contact housing (470). In the illustrated embodiment, the first extension (451) is provided in the shape of a polygonal plate having a length in the front-back direction, a width in the left-right direction, and a thickness in the up-down direction.

[0163] The longitudinal ends of the first extension (451), the front side end and the rear side end in the illustrated embodiment, are each continuous with the second extension (452).

[0164] The second extension (452) extends in the height direction of the auxiliary contact housing (470), i.e., in the vertical direction in the illustrated embodiment. The second extension (452) is at least partially exposed to the outside of the auxiliary contact housing (470). In other words, a portion of the second extension (452) is positioned in the movable contact receiving space (474). The second extension (452) is penetrated and connected to a through hole (not indicated in the drawing) formed inside the auxiliary contact housing (470).

[0165] A plurality of second extension parts (452) may be provided. Each of the plurality of second extension parts (452) may be continuous with the first extension part (451) and spaced apart from each other along the longitudinal direction of the first extension part (451). In the illustrated embodiment, a pair of second extension parts (452) are provided and are continuous at a predetermined angle with each end of the longitudinal direction of the first extension part (451), i.e., the front end and the rear end. In one embodiment, the predetermined angle may be a right angle.

[0166] The second extension (452) surrounds the movable contact (410) and the lower yoke (460) in the width direction. In the illustrated embodiment, the second extension (452) surrounds the movable contact (410) and the lower yoke (460) on the front and rear sides, respectively.

[0167] 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 repulsion force generated between the fixed contact (220) and the movable contact (410).

[0168] The lower yoke (460) may also be provided in any shape that can form a magnetic attraction force together with the upper yoke (450). In one embodiment, the lower yoke (460) may be provided with a magnetic material having the same magnetic properties as the upper yoke (450), such as a permanent magnet.

[0169] The lower yoke (460) is positioned adjacent to the movable contact (410). The lower yoke (460) is positioned on the other side of the movable contact (410) in the height direction, i.e., the lower side. The lower yoke (460) supports the movable contact (410) from the lower side.

[0170] The lower yoke (460) is elastically supported by a movable spring (440). In the illustrated embodiment, the lower surface of the lower yoke (460) is supported by contact with the upper end of the movable spring (440).

[0171] The lower yoke (460) is at least partially surrounded by the upper yoke (450) and an auxiliary contact housing (470) that is coupled to the upper yoke (450). In the illustrated embodiment, the upper, front, and rear sides of the lower yoke (460) are surrounded by the upper yoke (450) and the auxiliary contact housing (470), respectively.

[0172] Meanwhile, the lower yoke (460) can be moved together with the movable shaft (430).

[0173] At this time, when the movable contact (410) is moved to make contact with the fixed contact (220), the lower yoke (460) may be arranged to at least partially overlap the upper yoke (450) in the horizontal direction. A detailed description thereof will be provided later.

[0174] The auxiliary contact housing (470) includes a substrate member (not shown) to which the auxiliary contact (250) is electrically connected. The substrate member (not shown) can obtain information on the operating status of the electronic contactor (10) and transmit this information to the outside through the auxiliary contact (250).

[0175] In addition, the auxiliary contact housing (470) is coupled to and supports the upper yoke (450). As described above, as the upper yoke (450) is coupled to the auxiliary contact housing (470), the position of the upper yoke (450) can be maintained constant regardless of the movement of the movable shaft (430).

[0176] The auxiliary contact housing (470) is coupled with the auxiliary contact (250) and is energized. At this time, the auxiliary contact housing (470) does not move, so the auxiliary contact housing (470) can be maintained in a energized state by being coupled with the auxiliary contact (250).

[0177] The auxiliary contact housing (470) is coupled to the movable frame (420). At this time, the auxiliary contact housing (470) is at least partially accommodated in the auxiliary contact housing receiving portion (421) and supported by the movable frame (420).

[0178] The auxiliary contact housing (470) is coupled with the upper yoke (450). The portion of the auxiliary contact housing (470) facing the movable contact (410), i.e., the lower portion in the illustrated embodiment, is coupled with the upper yoke (450).

[0179] The auxiliary contact housing (470) can at least partially accommodate the upper yoke (450). As described above, the first extension (451) of the upper yoke (450) is accommodated inside the auxiliary contact housing (470) and is not exposed to the outside. In addition, the second extension (452) of the upper yoke (450) is at least partially positioned in the movable contact accommodation space (474) provided in the auxiliary contact housing (470) and is exposed to the outside.

[0180] To this end, a through hole (not indicated in the drawing) may be formed on the lower side of each side of the auxiliary contact housing (470). As described above, a second extension (452) may pass through the through hole (not indicated in the drawing).

[0181] The auxiliary contact housing (470) may be electrically connected to the auxiliary contact (250) and may have any shape capable of supporting the upper yoke (450) by being coupled thereto. In the illustrated embodiment, the auxiliary contact housing (470) has a three-dimensional shape having a length in the front-back direction, a width in the left-right direction, and a height in the up-down direction.

[0182] At this time, a space (i.e., a movable contact receiving space (474) to be described later) is formed inside the auxiliary contact housing (470) to movably accommodate the movable contact (410) and the lower yoke (460).

[0183] In the illustrated embodiment, the auxiliary contact housing (470) includes an auxiliary contact plate (471), an auxiliary contact terminal (472), an auxiliary contact housing rack (473), and a movable contact receiving space (474).

[0184] The auxiliary contact plate (471) constitutes a part of the auxiliary contact housing (470). The auxiliary contact plate (471) supports a substrate member (not shown). An auxiliary contact terminal (472) is positioned on the auxiliary contact plate (471).

[0185] The auxiliary contact plate (471) is continuous with the auxiliary contact housing rack (473).

[0186] In the illustrated embodiment, the auxiliary contact plate (471) is continuous with the auxiliary contact housing rack (473) at each end in its extension direction, i.e., the front end and the rear end, respectively.

[0187] The auxiliary contact plate (471) partially surrounds the movable contact receiving space (474). In the illustrated embodiment, the auxiliary contact plate (471) surrounds the movable contact receiving space (474) in the height direction, i.e., from the upper side.

[0188] The auxiliary contact plate (471) supports a substrate member (not shown) and an auxiliary contact terminal (472), and may have any shape that is continuous with the auxiliary contact housing rack (473) and surrounds a movable contact receiving space (474). In the illustrated embodiment, the auxiliary contact plate (471) is provided in the shape of a plate having a length in the front-back direction and a width in the left-right direction.

[0189] At this time, a guide (not given a drawing symbol) extending in the height direction may be formed at each end in the width direction of the auxiliary contact plate (471). The guide is configured to prevent arbitrary detachment of the substrate member (not shown) or the auxiliary contact terminal (472).

[0190] The auxiliary contact terminal (472) is electrically connected to the auxiliary contact (250).

[0191] Additionally, the auxiliary contact terminal (472) is electrically connected to a 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).

[0192] The auxiliary contact terminal (472) is coupled with the auxiliary contact plate (471). The auxiliary contact terminal (472) is located on the upper side of the auxiliary contact plate (471). In other words, the auxiliary contact terminal (472) is positioned facing the auxiliary contact housing rack (473) with the auxiliary contact plate (471) interposed therebetween.

[0193] The auxiliary contact terminal (472) is coupled with the auxiliary contact (250). The auxiliary contact terminal (472) is maintained at a preset position regardless of the movement of the movable shaft (430), so that the auxiliary contact (250) and the auxiliary contact terminal (472) can be maintained in a contact and current-carrying state while the electronic contactor (10) is in operation.

[0194] A plurality of auxiliary contact terminals (472) may be provided. The plurality of auxiliary contact terminals (472) may be spaced apart from each other and may be connected and energized with the plurality of auxiliary contacts (250), respectively. In the illustrated embodiment, two auxiliary contact terminals (472) are provided and are spaced apart from each other in the longitudinal direction of the auxiliary contact plate (471), i.e., in the front-back direction.

[0195] In one embodiment, the auxiliary contact terminal (472) can be elastically coupled with the auxiliary contact (250). In the above embodiment, the auxiliary contact terminal (472) can pressurize the auxiliary contact (250) and be coupled and energized with the auxiliary contact (250).

[0196] The auxiliary contact housing rack (473) constitutes another part of the auxiliary contact housing (470). The auxiliary contact housing rack (473) is the part where the auxiliary contact housing (470) is coupled to the movable frame (420). Specifically, the auxiliary contact housing rack (473) is at least partially accommodated in the auxiliary contact housing receiving portion (421).

[0197] The auxiliary contact housing rack (473) is continuous with the auxiliary contact plate (471).

[0198] The auxiliary contact housing rack (473) extends in the height direction of the auxiliary contact housing (470), in the vertical direction in the illustrated embodiment. At this time, the auxiliary contact housing rack (473) may be continuous with the longitudinal end of the auxiliary contact plate (471) at a predetermined angle.

[0199] A plurality of auxiliary contact housing racks (473) may be provided. The plurality of auxiliary contact housing racks (473) may be spaced apart from each other in the length direction of the auxiliary contact plate (471). The plurality of auxiliary contact housing racks (473) may partially surround the movable contact receiving space (474) and the upper yoke (450) at different positions.

[0200] In the illustrated embodiment, a pair of auxiliary contact housing racks (473) are provided and spaced apart in the front-rear direction. The auxiliary contact housing rack (473) positioned on the front side surrounds the movable contact receiving space (474) and the upper yoke (450) from the front side. The auxiliary contact housing rack (473) positioned on the rear side surrounds the movable contact receiving space (474) and the upper yoke (450) from the rear side.

[0201] At this time, the auxiliary contact housing rack (473) can be in contact with the surface of the arc chamber (210). Specifically, the outer surface in the width direction of the auxiliary contact housing rack (473), i.e., the front side surface of the front-side auxiliary contact housing rack (473) and the rear side surface of the rear-side auxiliary contact housing rack (473), can be in contact with the front-side inner surface and the rear-side inner surface of the arc chamber (210), respectively.

[0202] Accordingly, the auxiliary contact housing (470) can be supported by the arc chamber (210). As a result, the coupling between the auxiliary contact housing (470) and the movable contact assembly (400) including the auxiliary contact housing (470) and the switching unit (200) can be stably maintained.

[0203] The space surrounded by the auxiliary contact plate (471) and the auxiliary contact housing rack (473) can be defined as a movable contact receiving space (474).

[0204] The movable contact receiving space (474) movably receives the movable contact (410) and the lower yoke (460). The movable contact (410) and the lower yoke (460) can move toward and in the opposite direction to the fixed contact (220) while being received in the movable contact receiving space (474).

[0205] The upper yoke (450) is partially accommodated in the movable contact receiving space (474). A portion of the upper yoke (450) may be coupled with the auxiliary contact plate (471), and the remainder may be exposed to the movable contact receiving space (474). The remainder of the upper yoke (450) may be arranged to surround the movable contact (410) and the lower yoke (460).

[0206] The movable contact support member (480) prevents the movable contact (410) from being randomly separated from the movable shaft (430). The movable contact support member (480) is respectively connected to the movable contact (410) and the shaft holder (431).

[0207] The movable contact support member (480) can be formed to at least partially surround the movable contact (410). In the illustrated embodiment, the movable contact support member (480) surrounds an upper portion, a front portion, and a rear portion of the movable contact (410).

[0208] The movable contact support member (480) is coupled to the shaft holder (431). One side in the height direction of the movable contact support member (480), in the illustrated embodiment, the lower side, can be fixedly coupled to the shaft holder (431).

[0209] A plurality of movable contact support members (480) may be provided. The plurality of movable contact support members (480) may be spaced apart 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.

[0210] 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 positioned facing each other with the auxiliary contact housing (470) interposed therebetween.

[0211] The movable contact support member (480) can be divided into a plurality of consecutive parts. In the illustrated embodiment, the movable contact support member (480) includes a first extension portion positioned on the front side and extending in the vertical direction to surround the front side of the movable contact (410), a second extension portion positioned on the upper side and extending in the front-back direction to surround the upper side of the movable contact (410), and a third extension portion positioned on the rear side and extending in the vertical direction to surround the rear side of the movable contact (410).

[0212] At this time, the lower ends of the first extension and the third extension are coupled to the shaft holder (431). The upper ends of the first extension and the third extension are continuous with the front and rear ends of the second extension at a predetermined angle, respectively. In one embodiment, the predetermined angle may be a right angle.

[0213] In addition, the movable contact support member (480) may be configured to support the movable contact (410) in the width direction rather than the surface direction. In other words, the movable contact support member (480) may support the movable contact (410) in the form of line contact rather than surface contact. Accordingly, the rigidity of the movable contact support member (480) is increased with respect to the oscillating force applied by the movable contact (410), so that arbitrary oscillation of the movable contact (410) can be effectively prevented.

[0214] In one embodiment, the movable contact support member (480) may be positioned to contact the movable contact (410). In this embodiment, arbitrary rotation or disengagement of the movable contact (410) may be more effectively prevented.

[0215] In another embodiment, a groove corresponding to the movable contact support member (480) may be formed in the movable contact (410). In the above embodiment, the combined state of the movable contact (410) and the movable contact support member (480) can be maintained more stably.

[0216] As described above, when the movable core (320) is moved, the movable shaft (430) coupled thereto can be moved together. At this time, the movable contact (410), the movable spring (440), the lower yoke (460), and the movable contact support member (480) are moved together with the movable shaft (430), but the auxiliary contact housing (470) and the upper yoke (450) coupled thereto are not moved.

[0217] Accordingly, the magnitude of the force required to move the movable contact (410) and other components can be reduced compared to the case where the auxiliary contact housing (470) and the upper yoke (450) are moved together with the movable shaft (430). Accordingly, even if the strength of the magnetic force between the fixed core (310) and the movable core (320) is reduced, the movement of the movable contact (410) and contact with the fixed contact (220) can be easily performed.

[0218] 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 when the upper yoke (450) moves together with the movable shaft (430).

[0219] As a result, a sufficiently large magnetic attraction force is applied between the upper yoke (450) and the lower yoke (460), so that the electromagnetic repulsion force generated between the fixed contact (220) and the movable contact (410) can be effectively canceled out.

[0220] Referring to FIG. 8, the operation process of an electronic contactor (10) according to an embodiment of the present invention is illustrated as an example.

[0221] Figure 8 (a) illustrates a state in which an electronic contactor (10) blocks current flow between an external power source (not shown) and a load (not shown). In the illustrated embodiment, the movable contact (410) is arranged vertically apart from the fixed contact (220).

[0222] At this time, the lower end of the upper yoke (450) is positioned lower than the upper end of the lower yoke (460). In the above embodiment, it can be said that the upper yoke (450) and the lower yoke (460) are arranged to overlap at least partially along the horizontal direction.

[0223] Figure 8 (b) illustrates a state in which an electronic contactor (10) is connected to an external power source (not shown) and a load (not shown) so that current can flow between them. In the illustrated embodiment, the movable contact (410) is in contact with the fixed contact (220). Accordingly, an electromagnetic repulsive force may be generated between the movable contact (410) and the fixed contact (220).

[0224] Here, in order to achieve the above-described connected state, operating power is supplied to generate a magnetic attraction force on the fixed core (310), and as a result, the movable core (320) will move toward the fixed core (310). At this time, an operating power lower than the existing operating power can be supplied by adding the magnetic force of the magnetic body (380).

[0225] At this time, the lower end of the upper yoke (450) is positioned lower than the upper end of the lower yoke (460). In other words, the upper yoke (450) and the lower yoke (460) are arranged to overlap at least partially along the horizontal direction. At this time, it will be understood that the area where the upper yoke (450) and the lower yoke (460) overlap is wider than the area where the upper yoke (450) and the lower yoke (460) overlap.

[0226] Accordingly, the strength of the magnetic attraction force formed between the upper yoke (450) and the lower yoke (460) when the movable contact (410) is in contact with the fixed contact (220) and is energized can be further increased. Accordingly, the contact state between the movable contact (410) and the fixed contact (220) can be stably formed and maintained.

[0227] Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

[0228] The present invention can be applied to the field of electrical and electronic connectors.

Claims

1. Fixed contact; A movable contact positioned adjacent to the fixed contact and in contact with or spaced apart from the fixed contact; A movable core coupled to the movable contact so as to be movable in either a direction toward the movable contact or a direction opposite to the movable contact; a fixed core magnetized to apply an attractive force to the movable core; and A magnetic body installed adjacent to the above movable core to add magnetic force; An electronic contactor having a structure for improving operating performance, including:

2. In paragraph 1, The above magnetic material is a permanent magnet. An electronic contactor having a structure for improving operating performance.

3. In paragraph 1, The above magnetic material is composed of multiple pieces so that the magnetic force can be controlled. An electronic contactor having a structure for improving operating performance.

4. In paragraph 1, It includes a movable shaft whose one end is fixed to the movable contact side and moves together with the movable contact, and whose other end is fixed to the movable core. The above movable shaft is installed through the movable core, and the magnetic body is arranged to surround the movable shaft by forming a through hole therein. An electronic contactor having a structure for improving operating performance.

5. In paragraph 4, The above magnetic body is composed of a plurality of magnetic bodies, and each magnetic body is installed to form a layer along the outer surface of the movable shaft, thereby controlling the number of magnetic bodies. An electronic contactor having a structure for improving operating performance.

6. In paragraph 5, In a state where the magnetic body is arranged, the end of the movable shaft is welded so that the movable shaft and the movable core are fixed. An electronic contactor having a structure for improving operating performance.

7. In paragraph 4, The operating voltage provided to the fixed core is adjusted according to the number of the magnetic materials. An electronic contactor having a structure for improving operating performance.

8. In paragraph 4, The above movable core is, The upper surface on which the above through hole is formed; and A side surface extending in the opposite direction from the upper surface and having an opening formed at the lower side and an internal space formed to accommodate the magnetic body; An electronic contactor having a structure for improving operating performance.

9. In paragraph 8, Including a baffle extending along the through hole to the opening on the side so that the movable shaft does not come into contact with the magnetic body. An electronic contactor having a structure for improving operating performance.

10. In paragraph 9, The above bulkhead and the side are formed in a cylindrical shape, An electronic contactor having a structure for improving operating performance.

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