Receptacle terminal

Abstract

A receptacle terminal is provided. The receptacle terminal comprises a body portion including a receiving space extending in a first direction, a terminal portion extending in a first direction within the receiving space, and a barrel portion provided at one end of the body portion. The terminal portion includes a connecting portion bent from a part of the body portion toward the receiving space, a terminal base portion extending from the connecting portion toward a second direction intersecting the first direction, and a first contact portion connected to the terminal base portion. The first contact portion includes a first arm portion extending in a first direction from the terminal base portion and a first contact contact portion protruding from one end of the first arm portion. The first arm portion includes a first surface and a first groove formed on the first surface.

Description

Technology Field

[0001] The present invention relates to a receptacle terminal, and more specifically, to a receptacle terminal that accommodates a tab terminal, which is a counterpart terminal. Background Technology

[0002] Various electrical devices used in diverse industrial fields, including automobiles, are equipped with various electrical and electronic components, and connectors can be used to electrically connect them. Connectors can connect electrical wiring to one another or connect electrical wiring to a unit.

[0003] Terminals constitute a connector; they are inserted into the connector's housing and engage with the terminals of the mating connector to establish an electrical connection. Such terminals may include receptacle terminals and tab terminals, which are used for the two connectors to be joined; an electrical connection is formed when a tab terminal is inserted into a receptacle terminal and joined with it.

[0004] Meanwhile, due to the trend toward miniaturization of electronic devices, there is a demand for the miniaturization of connectors as well. However, miniaturized connectors have the problem of being easily damaged by external forces. The technology forming the background of the present invention is disclosed in Korean Registered Patent Publication No. 10-1070182, etc. The problem to be solved

[0005] The technical problem that the present invention aims to solve is to provide a receptacle terminal capable of improving contact reliability and minimizing deformation of shape.

[0006] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0007] A receptacle terminal according to some embodiments for achieving the above technical problem comprises a body portion including a receiving space extending in a first direction, a terminal portion extending in a first direction within the receiving space, and a barrel portion provided at one end of the body portion, wherein the terminal portion includes a connecting portion bent from a part of the body portion toward the receiving space, a terminal base portion extending from the connecting portion toward a second direction intersecting with a first direction, and a first contact portion connected to the terminal base portion, wherein the first contact portion includes a first arm portion extending in a first direction from the terminal base portion and a first contact contact portion protruding at one end of the first arm portion, and the first arm portion includes a first surface and a first groove formed on the first surface.

[0008] In some embodiments of the present invention, the first groove includes a plurality of first sub-grooves.

[0009] In some embodiments of the present invention, the terminal base portion includes a second surface connected to a first surface and a second groove formed on the second surface.

[0010] In some embodiments of the present invention, the terminal portion further includes a second contact portion that extends in a first direction within a receiving space and faces a first contact portion in a second direction, and the second contact portion includes a second arm portion extending in a first direction from a terminal base portion and a second contact contact portion protruding from one end of the second arm portion, wherein the second arm portion includes a third surface facing a first surface and a third groove formed on the third surface.

[0011] In some embodiments of the present invention, in the first direction, the length of the first arm is different from the length of the second arm.

[0012] In some embodiments of the present invention, the third groove includes a plurality of second sub-grooves.

[0013] In some embodiments of the present invention, the first groove includes a plurality of first sub-grooves, wherein if the length of the first arm portion is longer than the length of the second arm portion, the number of the plurality of first sub-grooves is less than the number of the plurality of second sub-grooves.

[0014] A receptacle terminal according to some embodiments for achieving the above technical problem comprises a base portion extending in a first direction, a first contact portion connected to the base portion, and a second contact portion connected to the base portion and facing the first contact portion, wherein the first contact portion includes a first arm portion extending in a second direction intersecting the first direction from the base portion and a first contact contact portion protruding from one end of the first arm portion, the first arm portion includes a first surface and a first groove formed on the first surface, and the base portion includes a second surface connected to the first surface and a second groove formed on the second surface.

[0015] In some embodiments of the present invention, the second contact portion includes a second arm portion extending in a second direction from the base portion and a second contact portion protruding from one end of the second arm portion, and the second arm portion includes a third surface facing the first surface and a third groove formed on the third surface. Effects of the invention

[0016] In addition, the receptacle terminal according to some embodiments includes a groove structure, thereby effectively dispersing stress concentrated in a specific area. This prevents excessive deformation of the receptacle terminal according to some embodiments and increases structural stability.

[0017] The effects according to the present invention are not limited to those exemplified above, and various other effects are included in this specification. Brief explanation of the drawing

[0018] FIG. 1 is a perspective view of a receptacle terminal according to some embodiments. FIG. 2 is a right side view of a receptacle terminal according to some embodiments. Figure 3 is a cross-sectional view taken along A-A' of Figure 1. FIG. 4 is a perspective view of a receptacle terminal according to some embodiments. FIG. 5 is a right side view of a receptacle terminal according to some embodiments. Specific details for implementing the invention

[0019] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings.

[0020] However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. The sizes and relative sizes of components shown in the drawings may be exaggerated for clarity of description. Throughout the specification, the same reference numerals refer to the same components, and "and / or" includes each of the mentioned items and all combinations of one or more.

[0021] When elements or a layer are referred to as being "on" or "on" another element or layer, it includes not only being directly on top of the other element or layer but also cases where another layer or element is interposed in between. On the other hand, when an element is referred to as being "directly on" or "directly on," it indicates that no other element or layer is interposed in between.

[0022] Spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used to facilitate the description of the relationship between one element or component and another, as illustrated in the drawings. Spatially relative terms should be understood as encompassing different orientations of the element during use or operation, in addition to the orientations illustrated in the drawings. For example, if an element illustrated in the drawings is flipped, the element described as "below" or "beneath" of another element may be placed "above" of that other element. Therefore, the exemplary term "below" may encompass both the lower and upper directions. Elements may also be oriented in other directions, and accordingly, spatially relative terms may be interpreted according to the orientation.

[0023] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components in addition to the components mentioned.

[0024] Although terms such as "first," "second," etc., are used to describe various elements or components, it goes without saying that these elements or components are not limited by these terms. These terms are used merely to distinguish one element or component from another. Therefore, it goes without saying that the first element or component mentioned below may also be the second element or component within the technical scope of the present invention.

[0025] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0026] Hereinafter, a receptacle terminal according to several embodiments is described with reference to the attached drawings.

[0027] FIG. 1 is a perspective view of a receptacle terminal according to some embodiment. FIG. 2 is a right side view of a receptacle terminal according to some embodiment.

[0028] Referring to FIGS. 1 and 2, the receptacle terminal (1000) may include a body portion (100), a barrel portion (200), and a terminal portion (300).

[0029] The body portion (100) and the barrel portion (200) can be formed integrally to form a single terminal. The body portion (100) can be extended from the barrel portion (200) in a first direction (X). The body portion (100) can be connected to the barrel portion (200). Specifically, the body portion (100) can be extended in the first direction (X) from the third base portion (252) of the barrel portion (200) and connected to the barrel portion (200).

[0030] The body portion (100) may include an upper wall portion (110), a lower wall portion (130), and a side wall portion (150).

[0031] The upper wall portion (110) may be extended in a first direction (X). For example, the upper wall portion (110) may be a plate-shaped structure extending in a first direction (X) and a second direction (Y) that intersects the first direction (X). The upper wall portion (110) may form the upper frame of the receptacle terminal (1000).

[0032] The lower wall portion (130) may be extended in a first direction (X). For example, the lower wall portion (130) may be a plate-shaped structure extending in the first direction (X) and in a second direction (Y) that intersects the first direction (X). The lower wall portion (130) may form the lower frame of the receptacle terminal (1000).

[0033] The side wall portion (150) forms the side of the receptacle terminal (1000) and may include a first side wall (151), a second side wall (153), and a protrusion (157).

[0034] The first side wall (151) forms the side wall of the receptacle terminal (1000) and can be extended in the first direction (X). The first side wall (151) is a plate-shaped structure extending in the first direction (X) and the third direction (Z), and can connect the upper wall portion (110) and the lower wall portion (130). The first side wall (151) is located between the upper wall portion (110) and the lower wall portion (130) and may be a pair facing each other in the second direction (Y). The first side wall (151) can serve to maintain the rigidity of the receptacle terminal (1000) and protect internal components.

[0035] The second side wall (153) may be a structure in which the first side wall (151) extends in the first direction (X) to form the side wall section (150). The second side wall (153) may be connected to the upper wall section (110) or the lower wall section (130). The second side wall (153) may be a pair of structures located between the upper wall section (110) and the lower wall section (130) and facing each other in the second direction (Y). The second side wall (153) serves to provide lateral support when the receptacle terminal (1000) engages with an external housing or other connecting element, and may also serve as a guide for a stable connection. In some embodiments, the second side wall (153) may be a plate-shaped structure connecting the upper wall section (110) and the lower wall section (130), but is not limited to what is illustrated.

[0036] The protrusion (157) may be a portion of the first side wall (151) extending in a third direction (Z). For example, the protrusion (157) may be a plate-shaped structure extending in a first direction (X) that intersects the third direction (Z) and the third direction (Z). The protrusion (157) may protrude downward from the lower portion of the first side wall (151). The lower surface of the protrusion (157) may protrude lower than the lower surface of the lower wall portion (130). The protrusion (157) may be used to secure the receptacle terminal (1000) within the housing (not shown). Additionally, the protrusion (157) may prevent reverse insertion of the receptacle terminal (1000).

[0037] The side wall portion (150) extends along the side of the receptacle terminal (1000) and can perform the function of protecting the internal structure and preventing deformation.

[0038] The barrel portion (200) is a part that secures the wire to the receptacle terminal (1000) and can be physically and electrically connected to the wire. For example, the barrel portion (200) may include a first receiving space that extends in a first direction (X) and can receive the wire.

[0039] In some embodiments, the barrel portion (200) may include a third base portion (252), a first wing portion (254), and a second wing portion (256). The third base portion (252) may extend in a first direction (X). The first wing portion (254) and the second wing portion (256) may extend from both sides of the third base portion (252) in a third direction (Z) that intersects the first direction (X). The third base portion (252), the first wing portion (254), and the second wing portion (256) may define a first receiving space.

[0040] The first wing portion (254) is compressed to wrap around the core wire, which is the part of the wire where the insulation has been stripped, so as to physically and electrically connect the receptacle terminal (1000) and the wire.

[0041] The second wing portion (256) is compressed to wrap around the wire sheath so as to physically connect the receptacle terminal (1000) and the wire.

[0042] Figure 3 is a cross-sectional view taken along A-A' of Figure 1.

[0043] Referring to FIG. 3, the receptacle terminal (1000) may further include a terminal portion (300).

[0044] The terminal section (300) may include a terminal base section (310), a first contact section (320), a second contact section (330), a first terminal fixing section (340), a second terminal fixing section (350), and a connection section (154).

[0045] A portion of the first side wall (151) of the connecting portion (154) may be bent toward the receiving space of the body portion (100). For example, the connecting portion (154) may be extended along a second direction (Y) toward the receiving space of the body portion (100) by a portion of the first side wall (151).

[0046] The terminal base portion (310) may be connected to the connection portion (154). The terminal base portion (310) may be formed by a portion of the connection portion (154) being bent toward the third direction (Z). For example, the terminal base portion (310) may be a plate-shaped structure extending toward the third direction (Z) and the first direction (X) intersecting the third direction (Z). The terminal base portion (310) may be connected to the first contact portion (320) and the second contact portion (330).

[0047] The terminal base portion (310) may include a first surface which is one side of the terminal base portion (310). The first surface may be the surface where the terminal base portion (310) makes contact with an external terminal. A first groove (312) may be formed continuously along a third direction (Z) on the first surface. The first groove (312) will be described in detail below.

[0048] The first contact portion (320) may include a first arm portion (321) and a first contact contact portion (323).

[0049] The first arm (321) may be extended in the first direction (X). For example, the first arm (321) may be a thin plate-shaped structure extending in the first direction (X) and in the third direction (Z) that intersects the first direction (X). The first arm (321) may serve to connect the terminal base portion (310) and the first contact portion (323) inside the terminal portion (300).

[0050] Additionally, the first arm portion (321) may include a second surface which is one side of the first arm portion (321). The second surface may be the surface where the first arm portion (321) makes contact with an external terminal. The second surface may be connected to the first surface. A second groove (325) may be formed on the second surface, continuously formed along the first direction (X). The second groove (325) will be described in detail below.

[0051] The first contact portion (323) has a shape in which a part of the first arm portion (321) protrudes, and can serve to increase the contact surface with the external terminal. For example, the first contact portion (323) may be a structure protruding in the third direction (Z), and can improve electrical contact reliability by increasing the contact force with the terminal when the external terminal is inserted.

[0052] The second contact portion (330) may include a second arm portion (331) and a second contact portion (333).

[0053] The second arm (331) can be extended in the first direction (X) just like the first arm (321). For example, the second arm (331) may be a thin plate-shaped structure extending in the first direction (X) and in the third direction (Z) intersecting the first direction (X), and may serve to connect the terminal base portion (310) and the second contact portion (333).

[0054] Additionally, the second arm (331) may include a third surface which is one side of the second arm (331). The third surface may be the surface where the second arm (331) makes contact with an external terminal. The third surface may be connected to the first surface. The third surface may face the second surface. A third groove (335) may be formed on the third surface, continuously formed along the first direction (X). The third groove (335) will be described in detail below.

[0055] The second contact portion (333) has a shape in which a part of the second arm portion (331) protrudes and can contact an external terminal. For example, the second contact portion (333) may be a structure protruding in the third direction (Z) and can improve electrical contact stability.

[0056] The first terminal fixing part (340) can serve to fix the terminal part (300), including the terminal base part (310), to the body part (100). For example, the first terminal fixing part (340) may be a structure protruding in the third direction (Z) and may serve to support the terminal part (300) so that it does not shake inside the receptacle terminal (1000).

[0057] The second terminal fixing part (350) can serve to fix the terminal part (300), including the terminal base part (310), to the body part (100). For example, the second terminal fixing part (350) may be a structure protruding in the third direction (Z), and may allow the terminal part (300) to stably maintain contact with an external terminal.

[0058] The terminal portion (300) can perform the function of forming electrical contact within the receptacle terminal (1000) and stably maintaining the connection with the external terminal. The first contact portion (320) and the second contact portion (330) can cooperate to transmit an electrical signal when the external terminal is inserted, and the first terminal fixing portion (340) and the second terminal fixing portion (350) can perform the function of supporting each component of the terminal portion (300) so that it maintains a constant position without deformation. However, the receptacle terminal (1000) according to some embodiments of the present invention may include only one contact portion, and the number and location of the contact portions are not limited to those illustrated.

[0059] Referring again to FIG. 3, the first groove (312) may include a plurality of sub-grooves. In some embodiments, the plurality of sub-grooves may include a first sub-groove (312a) and a second sub-groove (312b). The first sub-groove (312a) and the second sub-groove (312b) may be formed along a third direction (Z). The first sub-groove (312a) and the second sub-groove (312b) may be formed in a line spaced apart at regular intervals along the first surface of the terminal base portion (310). The shape of the first sub-groove (312a) and the second sub-groove (312b) may have a curved shape such as a V-shape, a U-shape, or a semicircle. The first sub-groove (312a) and the second sub-groove (312b) may independently distribute stress that may occur at their respective locations.

[0060] The formation depth and width of the first groove (312) can be designed considering the thickness of the terminal base portion (310), the elastic modulus of the material, and the stress applied when inserting an external terminal. The end of the first groove (312) may be curved or chamfered to relieve stress concentration. Additionally, the spacing between sub-grooves can be set to prevent stress overlap and optimize the dispersion effect between grooves. Accordingly, the shape, number, location, spacing, etc. of the first groove (312) and its sub-holes are not limited to those illustrated.

[0061] The second groove (325) may include a plurality of sub-grooves. In some embodiments, the plurality of sub-grooves may include a third sub-groove (325a) and a fourth sub-groove (325b). The third sub-groove (325a) and the fourth sub-groove (325b) may be formed along a first direction (X).

[0062] The third sub-groove (325a) and the fourth sub-groove (325b) may be formed in a row spaced apart at regular intervals along the second surface of the first arm (321). The third sub-groove (325a) and the fourth sub-groove (325b) may be formed along the second surface of the first arm (321) starting from the portion connected to the first surface of the terminal base portion (310). The third sub-groove (325a) and the fourth sub-groove (325b) may be formed on the second surface of the first arm (321), but may be formed at a position close to the first surface of the terminal base portion (310).

[0063] The shapes of the third sub-groove (325a) and the fourth sub-groove (325b) may have curved shapes such as V-shapes, U-shapes, or semicircles. The third sub-groove (325a) and the fourth sub-groove (325b) can independently distribute stress that may occur at their respective locations.

[0064] The formation depth and width of the second groove (325) can be designed by taking into account the thickness of the first arm (321), the elastic modulus of the material, and the opening angle required when inserting an external terminal. The end of the second groove (325) may be curved or chamfered to relieve stress concentration. Additionally, the spacing between sub-grooves can be set to prevent stress overlap and optimize the dispersion effect between grooves. Accordingly, the shape, number, location, spacing, etc. of the second groove (325) and its sub-holes are not limited to those illustrated.

[0065] The third groove (335) may include a plurality of sub-grooves. In some embodiments, the plurality of sub-grooves may include a fifth sub-groove (335a), a sixth sub-groove (335b), a seventh sub-groove (335c), and an eighth sub-groove (335d). The fifth sub-groove (335a), the sixth sub-groove (335b), the seventh sub-groove (335c), and the eighth sub-groove (335d) may be formed along a first direction (X).

[0066] The fifth sub-groove (335a), the sixth sub-groove (335b), the seventh sub-groove (335c), and the eighth sub-groove (335d) may be formed in a row spaced apart at regular intervals along the third surface of the second arm portion (331). The fifth sub-groove (335a), the sixth sub-groove (335b), the seventh sub-groove (335c), and the eighth sub-groove (335d) may be formed along the third surface of the second arm portion (331) starting from the portion connected to the first surface of the terminal base portion (310). The fifth sub-groove (335a), the sixth sub-groove (335b), the seventh sub-groove (335c), and the eighth sub-groove (335d) may be formed on the third surface of the second arm portion (331), but may be formed at a position close to the first surface of the terminal base portion (310). At least some of the fifth sub-groove (335a), sixth sub-groove (335b), seventh sub-groove (335c) and eighth sub-groove (335d) may face the third sub-groove (325a) and fourth sub-groove (325b).

[0067] The shapes of the fifth sub-groove (335a), sixth sub-groove (335b), seventh sub-groove (335c), and eighth sub-groove (335d) may have curved shapes such as V-shape, U-shape, or semicircle. The fifth sub-groove (335a), sixth sub-groove (335b), seventh sub-groove (335c), and eighth sub-groove (335d) can independently distribute stress that may occur at each location.

[0068] The formation depth and width of the third groove (335) can be designed by taking into account the thickness of the second arm (335), the elastic modulus of the material, and the opening angle required when inserting an external terminal. The end of the third groove (335) may be curved or chamfered to relieve stress concentration. Additionally, the spacing between the sub-grooves can be set to prevent stress overlap and optimize the dispersion effect between the grooves. Accordingly, the shape, number, location, spacing, etc. of the third groove (335) and its sub-holes are not limited to those illustrated.

[0069] Again, referring to FIG. 3, the length of the first arm (321) in the first direction (X) can be defined as the first length (d1). The length of the second arm (331) in the first direction (X) can be defined as the second length (d2).

[0070] The first length (d1) and the second length (d2) may be different from each other. For example, the first length (d1) may be longer than the second length (d2), or conversely, the first length (d1) may be shorter than the second length (d2).

[0071] As the length of the first arm (321), i.e., the first length (d1), differs from the length of the second arm (331), i.e., the second length (d2), the first contact portion (323) and the second contact portion (333) may be positioned at different locations in the first direction (X) rather than at the same location. For example, if the first length (d1) is longer than the second length (d2), the first contact portion (323) may be positioned further forward in the first direction (X), and conversely, if the first length (d1) is shorter than the second length (d2), the first contact portion (323) may be positioned further backward in the first direction (X).

[0072] In this way, the positions of the first contact portion (323) and the second contact portion (333) in the first direction (X) can be different due to the difference between the first length (d1) and the second length (d2), thereby improving the electrical contact area of ​​the terminal portion (300).

[0073] When the first contact part (323) and the second contact part (333) are positioned at the same location, when an external terminal is inserted, it may come into contact with both contact parts (322, 332) simultaneously, resulting in a large insertion resistance. However, as in the present embodiment, the first contact part (323) and the second contact part (333) are positioned at different locations in the first direction (X), so that contact can be made sequentially when an external terminal is inserted. Through this, the insertion resistance can be increased stepwise, allowing for smooth insertion, and the assembly of the external terminal can be improved.

[0074] In addition, due to the difference in position between the first contact part (323) and the second contact part (333), the contact pressure can be evenly distributed within the terminal part (300) when an external terminal is inserted. In particular, if the first contact part (323) and the second contact part (333) are in the same position, concentrated pressure may be applied to a specific part, but by being placed in different positions as in this embodiment, the contact pressure can be dispersed. Through this, the reliability of the electrical contact can be maintained even during long-term use, and the possibility of contact failure can be reduced.

[0075] When an external terminal is inserted, if the first contact portion (323) and the second contact portion (333) are in the same position, the insertion force and removal force are concentrated at one point, and stress may be concentrated in the terminal portion (300). However, by positioning the first contact portion (323) and the second contact portion (333) at different locations, the stress can be dispersed, and mechanical aging of the terminal portion (300) can be prevented. Through this, the durability of the terminal portion (300) is increased, and stable performance can be maintained even in a long-term usage environment.

[0076] In addition, by adjusting the first length (d1) and the second length (d2) to optimize the positions of the first contact portion (323) and the second contact portion (333), the space within the terminal portion (300) can be utilized more efficiently. This enables the terminal portion (300) to be miniaturized and increases the design freedom to adjust the structural arrangement of the terminal portion (300) to meet various design requirements. However, this is not limited thereto, and the first length (d1) and the second length (d2) may be the same depending on the design change.

[0077] Additionally, a first groove (312), a second groove (325), and a third groove (335) may be formed in the terminal base portion (310), the first arm portion (321), and the second arm portion (331) of the terminal portion (300), respectively. Each of the grooves includes a plurality of sub-grooves (312a~312b, 325a~325b, 335a~335d) and may be arranged in a continuous and aligned form at regular intervals along the length direction of the corresponding component.

[0078] These first groove (312), second groove (325), and third groove (335) structures can effectively disperse stress concentrated in a specific area of ​​the terminal portion (300) as the two contact portions (323, 333) spread apart when the opposing terminal is inserted. In particular, the multiple sub-grooves (312a~312b, 325a~325b, 335a~335d) can prevent stress accumulation and excessive deformation at specific points and increase structural stability by multiplexing the stress distribution paths along the entire length of the terminal portion (300).

[0079] In addition, the first groove (312), the second groove (325), and the third groove (335) are formed continuously near the connection portion between the components (e.g., the boundary between the first arm portion and the terminal base portion), thereby compensating for structural weaknesses that may occur at the connection portion location and improving overall elastic restoring force and mechanical stability.

[0080] In some embodiments, when the first length (d1) is longer than the second length (d2) and the first contact portion (323) is positioned further forward in the first direction (X) than the second contact portion (335), the number of multiple sub-grooves included in the second groove (325) may be less than the number of multiple sub-grooves included in the third groove (335). For example, the number of multiple sub-grooves included in the second groove (325) may be 2, and the number of multiple sub-grooves included in the third groove (335) may be 4. Thus, when the first length (d1) is longer than the second length (d2), by making the number of multiple sub-grooves included in the second groove (325) less than the number of multiple sub-grooves included in the third groove (335), the stress concentrated in a specific area of ​​the terminal portion (300) can be effectively dispersed. However, it is not limited to this, and may be changed by the relationship between the first length (d1) and the second length (d2), and the size and spacing of the sub-groove.

[0081] By introducing the first groove (312), second groove (325), and third groove (335) structures, technical effects such as overall mechanical fatigue distribution of the terminal portion (300), maintenance of electrical contact quality, and long-term durability can be provided.

[0082] FIG. 4 is a perspective view of a receptacle terminal according to some embodiment. FIG. 5 is a right side view of a receptacle terminal according to some embodiment. In the following description, the receptacle terminal (2000) according to FIG. 4 and FIG. 5 is similar in shape and function to the terminal portion (300) described using FIG. 1 to FIG. 3. In the following description, the differences will be described mainly.

[0083] The receptacle terminal (2000) may include a base portion (2310), a third contact portion (2320), a fourth contact portion (2330), and a mounting portion (2340).

[0084] The base portion (2310) may be a plate-shaped structure extending in a third direction (Z) and a first direction (X) that intersects the third direction (Z). The base portion (2310) may be connected to a third contact portion (2320) and a fourth contact portion (2330).

[0085] The base portion (2310) may include a fourth surface which is one side of the base portion (2310). The fourth surface may be the surface where the base portion (2310) makes contact with an external terminal. A fourth groove (2312) may be formed continuously along the third direction (Z) on the first surface.

[0086] The third contact portion (2320) may include a third arm portion (2321) and a third contact portion (2323).

[0087] The third arm (2321) may be extended in the first direction (X). For example, the third arm (2321) may be a thin plate-shaped structure extending in the first direction (X) and in the third direction (Z) that intersects the first direction (X). The third arm (2321) may serve to connect the base portion (2310) and the third contact portion (2323) inside the receptacle terminal (2000).

[0088] Additionally, the third arm (2321) may include a fifth surface, which is one side of the third arm (2321). The fifth surface may be the surface where the third arm (2321) makes contact with an external terminal. The fifth surface may be connected to the fourth surface. A fifth groove (2325) may be formed continuously along the first direction (X) on the fifth surface.

[0089] The third contact portion (2323) has a shape in which a part of the third arm portion (2321) protrudes, and can serve to increase the contact surface with the external terminal. For example, the third contact portion (2323) may be a structure protruding in the third direction (Z), and can improve electrical contact reliability by increasing the contact force with the terminal when the external terminal is inserted.

[0090] In some embodiments, the third contact portion (2323) may further include a partially bent form. For example, the third contact portion (2323) may be a structure bent in the second direction (Y) and may serve to help the third contact portion (2320) maintain stable contact when an external terminal is inserted.

[0091] The fourth contact portion (2330) may include a fourth arm portion (2331) and a fourth contact portion (2333).

[0092] The fourth arm (2331) can be extended in the first direction (X) just like the third arm (2321). For example, the fourth arm (2331) may be a thin plate-shaped structure extending in the first direction (X) and in the third direction (Z) intersecting the first direction (X), and may serve to connect the base portion (2310) and the fourth contact portion (2333).

[0093] Additionally, the fourth arm (2331) may include a sixth surface, which is one side of the fourth arm (2331). The sixth surface may be the surface where the fourth arm (2331) makes contact with an external terminal. The sixth surface may be connected to the fourth surface. The sixth surface may face the fifth surface. A sixth groove (2335) may be formed continuously along the first direction (X) on the sixth surface.

[0094] The fourth contact portion (2333) has a shape in which a part of the fourth arm portion (2331) protrudes and can contact an external terminal. For example, the fourth contact portion (2333) may be a structure protruding in the third direction (Z) and can improve electrical contact stability.

[0095] In some embodiments, the fourth contact portion (2333) may further include a partially bent form. For example, the fourth contact portion (2333) may be a structure bent in the second direction (Y) and may serve to help the fourth contact portion (2330) maintain stable contact when an external terminal is inserted.

[0096] The mounting portion (2340) may have a structure in which the base portion (2310) protrudes in the first direction (X) and the third direction (Z). The mounting portion (2340) can help the receptacle terminal (2000) be mounted on the PCB board.

[0097] Referring to FIGS. 4 and 5, the fourth groove (2312) may include a plurality of sub-grooves. In some embodiments, the plurality of sub-grooves may include a ninth sub-groove (2312a) and a tenth sub-groove (2312b).

[0098] The fifth groove (2325) may include a plurality of sub-grooves. In some embodiments, the plurality of sub-grooves may include a first sub-groove (2325a) and a second sub-groove (2325b).

[0099] The sixth groove (2335) may include a plurality of sub-grooves. In some embodiments, the plurality of sub-grooves may include a 13th sub-groove (2335a), a 14th sub-groove (2335b), a 15th sub-groove (2335c), and a 16th sub-groove (2335d).

[0100] The above fourth groove (2312), fifth groove (2325) and sixth groove (2335) may be similar to the first groove (312), second groove (325) and third groove (335) described using FIGS. 1 to 3.

[0101] Accordingly, by including the structure of the fourth groove (2312), the fifth groove (2325), and the sixth groove (2335), the receptacle terminal (2000) can effectively disperse the stress concentrated in a specific area of ​​the receptacle terminal (2000) as the two contact portions (2323, 2333) spread apart when the counterpart terminal is inserted. In particular, the plurality of sub-grooves (2312a~2312b, 2325a~2325b, 2335a~2335d) can prevent the accumulation of stress and excessive deformation at specific points and increase structural stability by multiplexing the stress distribution paths along the entire length of the receptacle terminal (2000).

[0102] Additionally, the fourth groove (2312), the fifth groove (2325), and the sixth groove (2335) are formed continuously near the connection portion between the components (e.g., the boundary between the third arm and the base portion), thereby compensating for structural weaknesses that may occur at the connection portion location and improving overall elastic recovery force and mechanical stability.

[0103] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. Explanation of the symbols

[0104] 100: Body 200: Barrel 300: Terminal section 150: Side wall section 310: Terminal base section 320: First contact section 330: 2nd contact section 321: 1st dark section 323: First contact part

Claims

Claim 1 A body portion including a receiving space extending in a first direction; a terminal portion extending in the first direction within the receiving space; and includes a barrel portion provided at one end of the body portion, and the terminal portion includes a connecting portion bent from a part of the body portion toward the receiving space, a terminal base portion extending from the connecting portion in a second direction intersecting the first direction, and a first contact portion connected to the terminal base portion, wherein the first contact portion includes a first arm portion extending from the terminal base portion in the first direction and a first contact portion protruding from one end of the first arm portion, and the first arm portion includes a first surface and a first groove formed on the first surface, and the terminal portion further includes a second contact portion extending in the first direction within the receiving space and facing the first contact portion in the second direction, and the second contact portion includes a second arm portion extending from the terminal base portion in the first direction and a second contact portion protruding from one end of the second arm portion, wherein the second arm portion includes a third surface facing the first surface and a third groove formed on the third surface, and the third groove is a plurality of A receptacle terminal including a second subgroove. Claim 2 In claim 1, the receptacle terminal, wherein the first groove comprises a plurality of first sub-grooves. Claim 3 In claim 1, the terminal base portion comprises a second surface connected to the first surface and a second groove formed on the second surface, forming a receptacle terminal. Claim 4 delete Claim 5 In claim 1, a receptacle terminal in which, in the first direction, the length of the first arm is different from the length of the second arm. Claim 6 delete Claim 7 A receptacle terminal according to claim 1, wherein the first groove comprises a plurality of first sub-grooves, and if the length of the first arm portion is longer than the length of the second arm portion, the number of the plurality of first sub-grooves is less than the number of the plurality of second sub-grooves. Claim 8 A receptacle terminal comprising: a base portion extending in a first direction; a first contact portion connected to the base portion; and a second contact portion connected to the base portion and facing the first contact portion, wherein the first contact portion includes a first arm portion extending from the base portion in a second direction intersecting the first direction and a first contact portion protruding from one end of the first arm portion, the first arm portion includes a first surface and a first groove formed on the first surface, the base portion includes a second surface connected to the first surface and a second groove formed on the second surface, the second contact portion includes a second arm portion extending from the base portion in the second direction and a second contact portion protruding from one end of the second arm portion, the second arm portion includes a third surface facing the first surface and a third groove formed on the third surface, and the third groove includes a plurality of second sub-grooves. Claim 9 delete

Images