Electromagnetic contactor

Abstract

An electronic contactor is disclosed. An electronic contactor according to one aspect of the present invention comprises: a first housing; a second housing coupled to the first housing; a contact portion that is received in the first housing and the second housing and includes a plurality of fixed contacts and a plurality of auxiliary contacts disposed between the plurality of fixed contacts; and a magnetic housing disposed between the first housing and the contact portion and receiving a plurality of magnetic bodies; wherein the magnetic housing has a first side, a second side formed on the opposite side of the first side, and a third side formed between the first side and the second side, and an injection port formed between the plurality of auxiliary contacts and into which a resin is injected may be formed on the second side of the magnetic housing.

Description

Technology Field

[0001] The present invention relates to an electronic contactor, and more specifically, to an electronic contactor with reduced performance variation. Background Technology

[0003] An electromagnetic contactor is a general term for a device that opens or closes a circuit by operating contacts using magnetic attraction. Electromagnetic contactors are widely used to control the operation of any device remotely by controlling magnetic attraction. Such electromagnetic contactors are also referred to as DC relays.

[0004] Electronic contactors are generally configured to include fixed contacts and movable contacts that are electrically connected to an external power source and a load, respectively. The movable contact is connected to a movable core by any member. A fixed core is located adjacent to the movable core, and the fixed core is surrounded by a coil.

[0005] When a control current is applied to the coil, the fixed core is magnetized by the magnetic field formed by the coil and applies an attractive force to the movable core. Accordingly, the movable core and the movable contact connected thereto move, causing the movable contact and the fixed contact to come into contact, and as a result, the external power source and load connected to the electronic contactor are each connected to conduct electricity.

[0006] With the recent increase in interest in electric vehicles (EVs) that utilize electricity replacing fossil fuels as a power source, there is a growing number of cases where EVs are equipped with electronic contactors. As electric vehicles are directly linked to the safety of drivers and pedestrians, unlike conventional devices, reliable control of electronic contactors is becoming increasingly important.

[0007] To this end, technologies have been introduced to monitor the operating status of electronic contactors in real time and to control the electronic contactors in real time by reflecting the monitored status.

[0008] Korean Published Patent Document No. 10-2019-0089443 discloses a DC relay equipped with an auxiliary contact. Specifically, it discloses a DC relay equipped with an auxiliary contact to provide a monitoring function for the state of the DC relay while improving arc extinguishing capability.

[0009] However, if these auxiliary contacts are not stably fixed, there is a problem in that the operating status of the electronic contactor cannot be monitored in real time. The problem to be solved

[0011] The present invention is intended to solve the above-mentioned problems, and the objective of the present invention is to provide an electronic contactor in which an auxiliary contact can be stably fixed.

[0012] Another objective of the present invention is to provide an electronic contactor in which the strength of the magnetic housing is increased.

[0013] Another objective of the present invention is to provide an electronic contactor capable of automated production without manual labor, for a structure that electrically connects an auxiliary contact with the outside.

[0014] Another objective of the present invention is to provide an electronic contactor in which a structure electrically connecting the auxiliary contact to the outside improves the reliability of the contact state with the auxiliary contact.

[0015] Another objective of the present invention is to provide an electronic contactor with a structure that allows for easy installation of a configuration for implementing a state monitoring function.

[0016] Another objective of the present invention is to provide an electronic contactor with a structure that can prevent damage to existing components when installing a configuration for implementing a state monitoring function.

[0017] Another objective of the present invention is to provide an electronic contactor of a structure in which the combined state of the configuration for implementing a state monitoring function can be stably maintained.

[0018] Another objective of the present invention is to provide an electronic contactor with a structure in which the energizing and coupling states of a configuration for implementing a state monitoring function and a configuration for energizing can be stably maintained.

[0019] Another objective of the present invention is to provide an electronic contactor with a structure that can be modified and applied in various forms.

[0020] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art to which the present invention pertains from the description below. means of solving the problem

[0022] According to one aspect of the present invention, an electronic contactor may be provided comprising: a first housing; a second housing coupled to the first housing; a contact portion received in the first housing and the second housing and including a plurality of fixed contacts and a plurality of auxiliary contacts disposed between the plurality of fixed contacts; and a magnetic housing disposed between the first housing and the contact portion and receiving a plurality of magnetic bodies; wherein the magnetic housing has a first side, a second side formed on the opposite side of the first side, and a third side formed between the first side and the second side, and an injection port formed between the plurality of auxiliary contacts and into which a resin is injected is formed on the second side of the magnetic housing.

[0023] At this time, the resin can be introduced between the second side of the magnetic housing and the contact portion through the injection port.

[0024] At this time, the electronic contactor may further include a first resin portion comprising a resin disposed in the injection port; and a second resin portion comprising a resin formed between the second side of the magnetic housing and the contact portion.

[0025] At this time, the first resin part may be positioned between the plurality of fixed contacts.

[0026] At this time, the electronic contactor may further include a guide portion that extends from the second side toward the first side and is coupled to the third side; and a terminal that is integrally formed with the guide portion and connected to the auxiliary contact.

[0027] At this time, the plurality of auxiliary contacts includes a first auxiliary contact and a second auxiliary contact spaced apart from the first auxiliary contact, and the terminal includes a first terminal connected to the first auxiliary contact; and a second terminal connected to the second auxiliary contact, wherein the first terminal includes a first terminal body part connected to the first auxiliary contact; a first extension part extending from the first terminal body part toward the guide part; a second extension part extending from the first extension part in a direction parallel to the direction toward the first side from the second side; and a first protrusion part extending from the second extension part and formed to protrude in a direction parallel to the direction toward the second side from the first side, and the second terminal includes a second terminal body part connected to the second auxiliary contact; a third extension part extending from the first terminal body part toward the guide part; and a fourth extension part extending from the third extension part toward the second side in a direction parallel to the direction toward the first side. and may include a second protrusion that extends from the fourth extension and is formed to protrude in a direction parallel to the direction from the first side toward the second side.

[0028] At this time, the first terminal includes a first coupling portion coupled to the second side, and the second terminal includes a second coupling portion coupled to the second side, and the first coupling portion extends from the first terminal body portion in a direction away from the second coupling portion, and the second coupling portion may extend from the second terminal body portion in a direction away from the first coupling portion.

[0029] At this time, the injection port is formed between the first auxiliary contact and the second auxiliary contact, the first terminal includes a first coupling part coupled to the second side, and the second terminal includes a second coupling part coupled to the second side, the first coupling part extends from the first terminal body part in a direction away from the injection port, and the second coupling part may extend from the second terminal body part in a direction away from the injection port. Effects of the invention

[0031] According to the above configuration, the auxiliary contact of the electronic contactor according to the embodiment of the present invention can be stably fixed.

[0032] In addition, according to the above configuration, the strength of the magnetic housing of the electronic contactor according to the embodiment of the present invention can be increased.

[0033] In addition, according to the above configuration, the electronic contactor according to the embodiment of the present invention can be easily configured to implement a state monitoring function.

[0034] In addition, according to the above configuration, the electronic contactor according to the embodiment of the present invention can prevent damage to the existing configuration when installing a configuration for implementing a status monitoring function.

[0035] In addition, according to the above configuration, the electronic contactor according to the embodiment of the present invention can stably maintain the combined state of the configuration for implementing a state monitoring function.

[0036] In addition, according to the above configuration, the electronic contactor according to the embodiment of the present invention can stably maintain the energization and coupling state of the configuration for implementing a state monitoring function and the configuration for energization.

[0037] In addition, according to the above configuration, the electronic contactor according to the embodiment of the present invention can be modified and applied in various forms.

[0038] 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 configuration of the invention described in the detailed description or claims of the present invention. Brief explanation of the drawing

[0040] FIG. 1 is a perspective view showing the external appearance of an electronic contactor according to an embodiment of the present invention. FIG. 2 is a side view showing an electronic contactor according to an embodiment of the present invention. FIG. 3 is a perspective view of an electronic contactor according to an embodiment of the present invention, viewed from another side. FIG. 4 is an exploded perspective view showing an electronic contactor according to an embodiment of the present invention. FIG. 5 is a perspective view focusing on the first housing and guide portion of an electronic contactor according to an embodiment of the present invention. FIG. 6 is a perspective view focusing on the first housing and guide portion of an electronic contactor according to an embodiment of the present invention. FIG. 7 is a perspective view focusing on the terminals of an electronic contactor according to an embodiment of the present invention. FIG. 8 is a plan view focusing on the arrangement of terminals of an electronic contactor according to an embodiment of the present invention. FIG. 9 is a perspective view showing the first housing of an electronic contactor according to an embodiment of the present invention excluded. FIG. 10 is a cross-sectional view showing the appearance of an electronic contactor before resin is injected into the injection port according to an embodiment of the present invention. FIG. 11 is a cross-sectional view showing resin injected into the injection port of an electronic contactor according to an embodiment of the present invention. Specific details for implementing the invention

[0041] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the description in the drawings have been omitted, and the same reference numerals have been used throughout the specification for identical or similar components.

[0042] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.

[0043] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all technical concepts of the present invention; thus, various equivalents and modifications that may replace such configurations may exist at the time of filing the present invention.

[0044] In this specification, terms such as “comprising” or “having” are intended to describe the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0045] The statement that a component is "in front," "rear," "upper," or "lower" of another component includes, unless there are special circumstances, not only being positioned "in front," "rear," "upper," or "lower" in direct contact with the other component, but also cases where another component is positioned in between. Furthermore, the statement that a component is "connected" to another component includes, unless there are special circumstances, not only being directly connected to each other, but also being indirectly connected to each other.

[0046] Hereinafter, an electronic contactor according to an embodiment of the present invention will be described with reference to the drawings.

[0047] FIG. 1 is a perspective view showing the exterior of an electronic contactor according to an embodiment of the present invention, FIG. 2 is a side view showing an electronic contactor according to an embodiment of the present invention, FIG. 3 is a perspective view of an electronic contactor according to an embodiment of the present invention viewed from another side, and FIG. 4 is an exploded perspective view showing an electronic contactor according to an embodiment of the present invention.

[0048] Referring to FIGS. 1 to 4, an electronic contactor (100) according to an embodiment of the present invention is illustrated.

[0049] The electronic contactor (100) is electrically connected to an external power source and a load, respectively. The electronic contactor (100) can selectively electrically power the external power source and the load. Specifically, some components of the electronic contactor (100) are electrically connected to an external power source, and other components of the electronic contactor (100) are electrically connected to an external load.

[0050] Some of the above components and other components are electrically connected to or separated from each other by an applied control power source. Accordingly, external power sources and loads may be electrically connected to or disconnected from each other.

[0051] The electronic contactor (100) according to an embodiment of the present invention can be remotely controlled. Accordingly, the electronic contactor (100) can connect to or disconnect external power and loads so that power can be supplied even when an operator is not located nearby.

[0052] The process of the electronic contactor (100) connecting or disconnecting an external power source and load to enable power flow is a well-known technique, so a detailed description will be omitted.

[0053] Additionally, the electronic contactor (100) according to an embodiment of the present invention may include another configuration for monitoring the contact status of the part configuration and the other configuration. The other configuration may monitor any information related to the contact status of the part configuration and the other configuration. For example, the other configuration may be configured to monitor information such as the current value or voltage value of the power supplied to the part configuration and the other configuration.

[0054] As illustrated in FIGS. 1 to 4, an electronic contactor (100) according to an embodiment of the present invention may include a first housing (110), a second housing (120), a magnetic housing (140), and a contact portion (150).

[0055] The first housing (110) is formed to accommodate a magnetic housing (140). The first housing (110) may be formed from an electrically insulating material and a thermally insulating material. Additionally, the first housing (110) may be formed from a high-rigidity material.

[0056] And, the first housing (110) is combined with the second housing (120). And, the first housing (110) is provided with a first cover hole (111) through which a first fixed contact (131) passes and a second cover hole (112) through which a second fixed contact (132) passes.

[0057] And, a portion of the first fixed contact (131) is exposed to the outside of the cover (110) through the first cover hole (111). And, a portion of the second fixed contact (132) is exposed to the outside of the cover (110) through the second cover hole (112).

[0058] The second housing (120) is combined with the first housing (140). The second housing (120) may be formed from an electrically insulating material and a thermally insulating material. Additionally, the second housing (120) may be formed from a high-rigidity material. In one embodiment, the second housing (120) may be formed from the same material as the first housing (140).

[0059] The magnetic housing (140) is formed to surround a part of the contact portion (150). Additionally, the magnetic housing (140) can be combined with the second housing (120). At this time, when the magnetic housing (140) and the second housing (120) are combined, the contact portion (150) is accommodated between the magnetic housing (140) and the second housing (120).

[0060] Also, the magnetic housing (140) may be formed from an electrical insulating material and a thermal insulating material. Accordingly, the unauthorized conduction of current applied to the contact part (150) is prevented, and damage caused by an arc that may occur during the operation of the contact part (150) is prevented.

[0061] Additionally, the magnetic housing (140) may be formed from a high-rigidity material. Furthermore, according to an embodiment of the present invention, the magnetic housing (140) may be formed from a synthetic resin material such as reinforced plastic.

[0062] And, the magnetic housing (140) may have a first side (141), a second side (142), and a third side (143). The first side (141) is open. The second side (142) is formed on the opposite side of the first side (141). And, the third side (143) is formed between the first side (141) and the second side (142).

[0063] Additionally, the magnetic housing (140) may have a fourth side (144), a fifth side (not shown), and a sixth side (not shown). The fourth side (144) extends from the third side (143) and is formed between the first side (141) and the second side (142). The fifth side extends from the fourth side (144) and is formed between the first side (141) and the second side (142). Additionally, the fifth side is formed on the opposite side of the third side (143). The sixth side extends from the fifth side (144) and is formed between the first side (141) and the second side (142). Additionally, the sixth side is formed on the opposite side of the fourth side (144).

[0064] Additionally, a plurality of magnetic bodies (not shown) may be provided in the magnetic body housing (140). Specifically, the plurality of magnetic bodies may be selectively placed on two of the third side (143), the fourth side (144), the fifth side, and the sixth side. Furthermore, the plurality of magnetic bodies may form a magnetic field inside the magnetic body housing (140). Additionally, the magnetic field produced by the magnetic bodies may induce and extinguish an arc generated inside the contact portion (150).

[0065] The contact portion (150) is accommodated in the first housing (110). Some components of the contact portion (150) are exposed to the outside of the first housing (110), and other components of the contact portion (150) are accommodated inside the first housing (110). At this time, the other components of the contact portion (150) can be accommodated so as to be vertically movable inside the first housing (110).

[0066] And, the contact portion (150) is coupled with the second housing (120). Another configuration of the contact portion (150) can be movably accommodated inside the second housing (120). And, the contact portion (150) includes a fixed contact (131, 132), an auxiliary contact (133, 134), and a movable contact (not shown).

[0067] The fixed contacts (131, 132) are configured such that the contact portion (150) is electrically connected to an external power source and load. The fixed contacts (131, 132) are formed from an electrically conductive material. The fixed contacts (131, 132) are penetrated through the contact through-holes (142a, 142b) and may be exposed at least partially to the outside of the magnetic housing (140). The remaining portion of the fixed contacts (131, 132) is received in the magnetic housing (140).

[0068] The fixed contact (131, 132) is in contact with or separated from the movable contact. Accordingly, the fixed contact (131, 132) may be electrically connected to or disconnected from the movable contact. As the name suggests, the fixed contact (131, 132) is fixedly coupled and does not move. Therefore, it will be understood that contact and separation between the fixed contact (131, 132) and the movable contact are achieved by moving the movable contact.

[0069] Additionally, the fixed contacts (131, 132) may include a first fixed contact (131) and a second fixed contact (132). The first fixed contact (131) is exposed to the outside of the magnetic housing (140) by passing through the first contact through hole (142a) and is electrically connected to one of the external power source and load. The second fixed contact (132) is exposed to the outside of the magnetic housing (140) by passing through the second contact through hole (142b) and is electrically connected to one of the external power source and load.

[0070] And, the first fixed contact (131) and the second fixed contact (132) are electrically connected to each other or the electrical connection is cut off depending on the raising and lowering of the movable contact.

[0071] The auxiliary contacts (133, 134) are configured such that the contact portion (150) is electrically connected to an external power source. The auxiliary contacts (133, 134) are formed from an electrically conductive material. The auxiliary contacts (133, 134) may be exposed at least partially to the outside of the magnetic housing (140). The remaining portion of the auxiliary contacts (133, 134) is housed in the magnetic housing (140).

[0072] Additionally, the auxiliary contacts (133, 134) may include a first auxiliary contact (133) and a second auxiliary contact (134). In this case, the first auxiliary contact (133) and the second auxiliary contact (134) may be positioned between the first fixed contact (131) and the second fixed contact (132).

[0073] Additionally, the electronic contactor (100) according to an embodiment of the present invention may include terminals (321, 322) connected to auxiliary contacts (133, 134). The terminals (321, 322) include a first terminal (321) connected to a first auxiliary contact (133) and a second terminal (322) connected to a second auxiliary contact (134). The terminals (321, 322) will be described later with reference to the drawings.

[0075] FIG. 5 is a perspective view focusing on the first housing and guide portion of an electronic contactor according to an embodiment of the present invention, FIG. 6 is a perspective view focusing on the first housing and guide portion of an electronic contactor according to an embodiment of the present invention, FIG. 7 is a perspective view focusing on the terminals of an electronic contactor according to an embodiment of the present invention, and FIG. 8 is a plan view focusing on the arrangement of the terminals of an electronic contactor according to an embodiment of the present invention.

[0076] Referring to FIGS. 5 to 8, an electronic contactor according to an embodiment of the present invention includes a guide portion (145) formed integrally with terminals (321, 322).

[0077] The guide portion (145) serves to guide and support the terminals (321, 322). It extends from the second side (142) toward the first side (141). The guide portion (145) is coupled to the third side (143).

[0078] Additionally, the guide section (145) includes a first guide section (145a) coupled to the first terminal (321), a second guide section (145b) coupled to the second terminal (322), and a third guide section (145c) connecting the first guide section (145a) and the second guide section (145b). Additionally, the first guide section (145a) and the second guide section (145b) are formed side by side with each other. At this time, the first guide section (145a) is manufactured with the first terminal (321) by an insert injection method, and the second guide section (145b) is manufactured with the second terminal (322) by an insert injection method.

[0079] Also, the third guide part (145c) performs the role of stably supporting the space between the first guide part (145a) and the second guide part (145b). At this time, the grounding part (150, see FIG. 4) is provided with a fourth guide part (128, see FIG. 4) that contacts the third guide part (145c).

[0080] The fourth guide section (128) performs the role of supporting the third guide section (145c). In the assembly process in which the first housing (140) accommodates the contact section (150), the width of the fourth guide section (128) is equal to or smaller than the gap between the first guide section (145a) and the second guide section (145b) so that the fourth guide section (128) moves between the first guide section (145a) and the second guide section (145b). When the fourth guide section (128) contacts the third guide section (145c), the first guide section (145a) and the second guide section (145b) are prevented from moving excessively toward the second housing (120, see FIG. 4), thereby preventing the first guide section (145a) and the second guide section (145b) from being damaged.

[0081] And, the first guide portion (145a) includes a first guide extension portion (145d) extending in a vertical direction of the third side (143) and a first guide protrusion portion (145e) extending from the first guide extension portion (145d). That is, the first guide protrusion portion (145e) extends from the first guide extension portion (145d) in a direction parallel to the direction from the first side (141) toward the second side (142).

[0082] And, the second guide portion (145b) includes a second guide extension portion (145f) extending in a vertical direction of the third side (143) and a second guide protrusion portion (145g) extending from the second guide extension portion (145f). That is, the second guide protrusion portion (145g) extends from the second guide extension portion (145f) in a direction parallel to the direction from the first side (141) toward the second side (142). And, the first guide protrusion portion (145e) and the second guide protrusion portion (145g) are arranged parallel to each other.

[0083] Additionally, as illustrated in FIG. 7, a first insertion hole (320a) into which a first auxiliary contact (133) is inserted is formed in the first terminal (321). As the first auxiliary contact (133) is inserted into the first insertion hole (320a), the first auxiliary contact (133) is electrically connected to the first terminal (321). The first terminal (321) includes a first terminal body part (321a), a first extension part (331), a second extension part (351), and a first protrusion part (311).

[0084] A first insertion hole (320a) is formed in the first terminal body portion (321a). Then, the first terminal body portion (321a) is electrically connected by contacting the first auxiliary contact (133).

[0085] The first extension portion (331) extends from the first terminal body portion (321a) toward the guide portion (145). Additionally, as shown in FIG. 8, the first extension portion (331) extends from the first terminal body portion (321a) along a direction parallel to the direction in which a plurality of fixed contacts (131, 132) are arranged. Furthermore, the first extension portion (331) is formed integrally with the second side (142).

[0086] The second extension part (351) extends from the first extension part (331). At this time, the second extension part (351) extends from the first extension part (331) to the second side (142) in a direction parallel to the direction toward the first side (141). And, the second extension part (351) is formed integrally with the first guide part (145a).

[0087] The first protrusion (311) extends from the second extension (351). At this time, the first protrusion (311) is formed to protrude in a direction parallel to the direction from the first side (141) toward the second side (142). Also, the first protrusion (311) is formed integrally with the first guide protrusion (145e).

[0088] Additionally, as illustrated in FIG. 7, a second insertion hole (320b) into which a second auxiliary contact (134) is inserted is formed in the second terminal (322). As the second auxiliary contact (134) is inserted into the second insertion hole (320b), the second auxiliary contact (134) is electrically connected to the second terminal (322). The second terminal (322) includes a second terminal body part (322a), a third extension part (332), a fourth extension part (352), and a second protrusion part (312).

[0089] A second insertion hole (320b) is formed in the second terminal body part (322a). Then, the second terminal body part (322a) is electrically connected by contacting the second auxiliary contact (134).

[0090] The third extension portion (332) extends from the second terminal body portion (322a) toward the guide portion (145). Additionally, as shown in FIG. 8, the third extension portion (332) extends from the second terminal body portion (322a) along a direction parallel to the direction in which a plurality of fixed contacts (131, 132) are arranged. Furthermore, the third extension portion (332) is formed integrally with the second side (142).

[0091] The fourth extension part (352) extends from the third extension part (332). At this time, the fourth extension part (352) extends from the third extension part (332) in a direction parallel to the direction toward the first side (141) toward the second side (142). And, the fourth extension part (352) is integrally combined with the second guide part (145b).

[0092] The second protrusion (312) extends from the fourth extension (352). At this time, the second protrusion (312) is formed to protrude in a direction parallel to the direction from the first side (141) toward the second side (142). Additionally, the second protrusion (312) is formed integrally with the second guide protrusion (145g).

[0093] Additionally, according to an embodiment of the present invention, the first terminal (321) may include a first connecting part (341) connecting the first extension part (331) and the second extension part (351). And, the second terminal (322) may include a second connecting part (342) connecting the third extension part (332) and the fourth extension part (352). And, the first connecting part (341) and the second connecting part (342) may make the distance between the second extension part (351) and the fourth extension part (352) smaller than the distance between the first extension part (331) and the third extension part (332).

[0094] Additionally, according to an embodiment of the present invention, the first terminal (321) includes a third connecting part (361) that connects the second extension part (351) and the first protrusion (311). And, as the third connecting part (361) separates the second extension part (351) and the first protrusion (311), it prevents electrical interference from occurring between the second extension part (351) and the first protrusion (311).

[0095] Likewise, the second terminal (322) includes a fourth connecting part (362) that connects the fourth extension part (352) and the second protrusion (312). And, as the fourth connecting part (362) separates the fourth extension part (352) and the second protrusion (312), electrical interference between the fourth extension part (352) and the second protrusion (312) is prevented.

[0096] Additionally, according to an embodiment of the present invention, the second fixed contact (132) is positioned between the first extension part (331) and the third extension part (332). At this time, the first extension part (331) and the third extension part (332) are formed in a curved shape to correspond to the outer side of the second fixed contact (132). Furthermore, as the first extension part (331) and the third extension part (332) are positioned at a constant distance from the second fixed contact (132), electrical interference caused by the second fixed contact (132) is prevented.

[0097] Additionally, according to an embodiment of the present invention, the first terminal (321) includes a first coupling portion (321b) that is coupled to the second side (142). The first coupling portion (321b) fixes the first terminal (321) to the second side (142). Accordingly, the first coupling portion (321b) restricts the movement of the first terminal (321) so as to stably maintain the coupling state between the first terminal (321) and the first auxiliary contact (133).

[0098] Additionally, according to an embodiment of the present invention, the second terminal (322) includes a second coupling part (322b) that is coupled to the second side (142). The second coupling part (322b) fixes the second terminal (322) to the second side (142). Accordingly, the second coupling part (322b) restricts the movement of the second terminal (322) and stably maintains the coupling state between the second terminal (322) and the second auxiliary contact (134).

[0099] Additionally, the first coupling part (321b) extends from the first terminal body part (321a) in a direction away from the second coupling part (322b). And, the second coupling part (322b) extends from the second terminal body part (322a) in a direction away from the first coupling part (321b). That is, as the first coupling part (321b) and the second coupling part (322b) are positioned to be spaced as far apart as possible from the first fixed contact (131) and the second fixed contact (132), respectively, the transmission of electromagnetic waves generated between the first fixed contact (131) and the second fixed contact (132) to the first coupling part (321b) and the second coupling part (322b) is minimized.

[0100] Additionally, the first coupling part (321b) and the second coupling part (322b) are arranged symmetrically with respect to each other. Accordingly, even if vibration occurs due to the operation of the electronic contactor, the first coupling part (321b) and the second coupling part (322b) can each maintain a balanced coupling state with the first auxiliary contact (133) and the second auxiliary contact (134), respectively.

[0101] Additionally, according to an embodiment of the present invention, the first extension part (331) extends from the first terminal body part (321a) along a direction parallel to the direction in which a plurality of fixed contacts (131, 132) are arranged. And, the third extension part (332) extends from the second terminal body part (322a) along a direction parallel to the direction in which a plurality of fixed contacts (131, 132) are arranged. Accordingly, the first extension part (331) and the third extension part (332) are positioned adjacent only to the second fixed contact (132) and positioned as far as possible from the first fixed contact (131).

[0102] In addition, according to an embodiment of the present invention, the first coupling part (321b) is positioned vertically with respect to the first extension part (331). And, the second coupling part (322b) is positioned vertically with respect to the third extension part (332). Accordingly, the first coupling part (321b) and the second coupling part (322b) are positioned at maximum distance from a plurality of fixed contact points (131, 132), and electrical interference between the first extension part (331) and the third extension part (332) can be minimized.

[0104] FIG. 9 is a perspective view showing the first housing of an electronic contactor according to an embodiment of the present invention excluded, FIG. 10 is a cross-sectional view showing the appearance of the electronic contactor before resin is injected into the injection port according to an embodiment of the present invention, and FIG. 11 is a cross-sectional view showing the appearance of the electronic contactor after resin has been injected into the injection port according to an embodiment of the present invention.

[0105] Referring to FIGS. 9 to 11, an injection port (210) into which resin is injected is formed on the second side (142) of the magnetic housing (140).

[0106] In this case, the resin may be a resin having insulating properties. For example, the resin may be an epoxy resin. However, the resin is not limited to epoxy resin and may be various resins having insulating properties.

[0107] An injection port (210) is formed between the first auxiliary contact (133) and the second auxiliary contact (134). Additionally, on the second side (142) of the magnetic housing (140), a first wall (142i) partitioning the space between the injection port (210) and the first auxiliary contact (133) and a second wall (142j) partitioning the space between the injection port (210) and the second auxiliary contact (134) are formed.

[0108] At this time, as illustrated in FIG. 8, the first coupling part (321b) extends from the first terminal body part (321a) in a direction away from the injection port (210). And, the second coupling part (322b) extends from the second terminal body part (322a) in a direction away from the injection port (210). That is, the first coupling part (321b) and the second coupling part (322b) extend in the opposite direction of the injection port (210) with the injection port (210) as the center.

[0109] And, as shown in FIG. 10, the resin is injected into the injection port (210) from the upper side of the magnetic housing (140).

[0110] And, the resin is introduced between the second side (142) of the magnetic housing (140) and the contact portion (150) through the injection port (210).

[0111] At this time, as illustrated in FIG. 11, a first resin portion (220) formed by curing the resin is provided in the injection port (120). And, a second resin portion (221, 222) formed by curing the resin is provided between the second side (142) of the magnetic housing (140) and the contact portion (150).

[0112] The first resin part (220) is positioned between the first fixed contact (131) and the second fixed contact (132). Accordingly, the first resin part (220) insulates the first fixed contact (131) and the second fixed contact (132), thereby preventing electrical interference between the first fixed contact (131) and the second fixed contact (132).

[0113] The second resin portion (221, 222) prevents a gap from being formed between the second side (142) of the magnetic housing (140) and the contact portion (150), and has the advantage of increasing the strength of the magnetic housing (140).

[0114] And, as shown in FIG. 11, the second resin part (221, 222) wraps around the first auxiliary contact (133) and the second auxiliary contact (134), so that the first auxiliary contact (133) and the second auxiliary contact (134) can be stably connected to the magnetic housing (140).

[0116] Although embodiments of the present invention have been described, the spirit of the present invention is not limited by the embodiments presented in this specification. Those skilled in the art who understand the spirit of the present invention may easily propose other embodiments within the scope of the same spirit by adding, changing, deleting, or adding components, and such are also to be considered to fall within the scope of the spirit of the present invention. Explanation of the symbols

[0117] 100: Electronic contactor 110: 1st Housing 120: 2nd Housing 131, 132: Fixed contacts 133, 134: Auxiliary contacts 140: Magnetic housing 210: Inlet

Claims

Claim 1 An electronic contactor comprising: a first housing; a second housing coupled to the first housing; a contact portion received in the first housing and the second housing and including a plurality of fixed contacts and a plurality of auxiliary contacts disposed between the plurality of fixed contacts; and a magnetic housing disposed between the first housing and the contact portion and receiving a plurality of magnetic bodies; wherein the magnetic housing has a first side, a second side formed opposite to the first side, and a third side formed between the first side and the second side, and an injection port formed between the plurality of auxiliary contacts and into which resin is injected is formed on the second side of the magnetic housing. Claim 2 An electronic contactor according to claim 1, wherein the resin is introduced between the second side of the magnetic housing and the contact portion through the injection port. Claim 3 An electronic contactor according to claim 2, further comprising: a first resin portion comprising a resin disposed in the injection port; and a second resin portion comprising a resin formed between the second side of the magnetic housing and the contact portion. Claim 4 In claim 3, the first resin part is disposed between the plurality of fixed contacts, an electronic contactor. Claim 5 An electronic contactor according to claim 1, further comprising: a guide portion extending from the second side toward the first side and coupled to the third side; and a terminal integrally formed with the guide portion and connected to the auxiliary contact. Claim 6 In claim 5, the plurality of auxiliary contacts includes a first auxiliary contact and a second auxiliary contact spaced apart from the first auxiliary contact, and the terminal includes a first terminal connected to the first auxiliary contact; and a second terminal connected to the second auxiliary contact, wherein the first terminal includes a first terminal body portion connected to the first auxiliary contact; a first extension portion extending from the first terminal body portion toward the guide portion; a second extension portion extending from the first extension portion in a direction parallel to the direction toward the first side from the second side; and a first protrusion formed extending from the second extension portion and protruding in a direction parallel to the direction toward the second side from the first side, and the second terminal includes a second terminal body portion connected to the second auxiliary contact; a third extension portion extending from the first terminal body portion toward the guide portion; and a fourth extension portion extending from the third extension portion toward the second side in a direction parallel to the direction toward the first side. An electronic contactor comprising a second protrusion extending from the fourth extension and protruding in a direction parallel to the direction toward the second side from the first side. Claim 7 An electronic contactor according to claim 6, wherein the first terminal includes a first coupling portion coupled to the second side, and the second terminal includes a second coupling portion coupled to the second side, wherein the first coupling portion extends from the first terminal body portion in a direction away from the second coupling portion, and the second coupling portion extends from the second terminal body portion in a direction away from the first coupling portion. Claim 8 An electronic contactor according to claim 6, wherein the injection port is formed between the first auxiliary contact and the second auxiliary contact, the first terminal includes a first coupling portion coupled to the second side, the second terminal includes a second coupling portion coupled to the second side, the first coupling portion extends from the first terminal body portion in a direction away from the injection port, and the second coupling portion extends from the second terminal body portion in a direction away from the injection port.

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