Jack connector and plug connector

Abstract

Provided is a jack connector (20) that is mounted to a substrate (not shown) and that is coupled to a plug connector (10), the jack connector (20) having a housing (20-5), a power supply terminal (20-1), and a signal terminal (20-3). The jack connector 20 includes: a housing 20-5 including a base portion 20-5-B, a first wall portion 20-5-W1 as a side wall, a second wall portion 20-5-W2 as an end wall, a third wall portion 20-5-W3 as a side wall, and a fourth wall portion 20-5-W4 as an end wall; a first terminal as a power supply terminal (20-1) provided on at least one of the end walls (20-5-W2, 20-5-W4); and the second terminal (20-3) is arranged on at least one of the side walls (20-5-W1) and (20-5-W3) and the base part (20-5-B), and comprises a contact part (20-3-C), a bottom part (20-3-B), an extension part (20-5-E) and a mounting part (20-5-M). The base portion (20-5-B) of the housing (20-5) has a first protruding portion (20-5-P1) positioned so as to be higher than the uppermost surface of the bottom portion (20-3-B) of the second terminal (20-3).

Description

Technical Field

[0001] This utility model relates to an electrical connector (receptacle connector and plug connector). More specifically, this utility model relates to the structure of a receptacle connector combined with a plug connector as a mating connector and a plug connector combined with a receptacle connector as a mating connector. Background Technology

[0002] Typically, when substrates are interconnected, two connectors are used to connect to each substrate via methods such as soldering. These two connectors can be connected to each other. Here, one of the two connectors is a plug connector, and the other is a socket connector. The socket connector is also called a jack connector. Such plug and socket connectors can be formed by arranging terminals in a mold section. The plug and socket connectors can be fastened together to form an electrical connector assembly.

[0003] With the trend towards miniaturization in electronic devices, the miniaturization and lower back profile of connectors is also a trend. However, in reality, there are certain limitations in reducing pitch or making parts smaller to achieve miniaturization and lower back profile of connectors.

[0004] On the other hand, while connectors are miniaturized, there are also aspects where ensuring their durability is more difficult than before. This is because the smaller components are more susceptible to breakage or deformation even under smaller forces.

[0005] Furthermore, as a type of deformation, plastic deformation may occur if the metal terminals maintain a specific shape during the connection process or while already connected between connectors. Plastic deformation, the opposite of elastic deformation, refers to a state where the material does not return to its original shape and remains deformed even after the load applied to it is removed. This is because all materials are generally elastic, but their shape deforms under stress. For the increasingly miniaturized connector terminals, there is a need to prevent this type of plastic deformation.

[0006] Furthermore, there are cases where resin molds (housings) for connectors are manufactured using insert molding. In such cases, the correct molding of the housing depends on the fluidity of the resin, thus necessitating the improvement of resin fluidity.

[0007] In addition, when manufacturing terminals made of metal, there are usually limitations on the structure of the terminal itself and the resin mold depending on the manufacturing method (e.g., whether deep drawing is used), so it is necessary to take this point into consideration.

[0008] In addition, in insert molding and other processes, it is necessary to consider the issue of resin injection molding covering metal materials. Utility Model Content

[0009] [The problem that the utility model aims to solve]

[0010] The technical problem to be solved by this utility model is to reduce the movement when the socket connector and the plug connector are combined.

[0011] In addition, an additional challenge is to increase the size of the signal terminals without interfering with the power supply terminals.

[0012] In addition, an additional challenge is to increase the area of ​​the mounting section and reduce heat generation.

[0013] In addition, an additional issue is preventing lead combustion around components (e.g., signal terminals).

[0014] The technical issues of this utility model are not limited to those mentioned above. Those skilled in the art can clearly understand other technical issues not mentioned based on the following description.

[0015] [Technical means to solve the problem]

[0016] According to this utility model, a socket connector is provided, which is a socket connector mounted on a substrate and coupled with a plug connector, comprising:

[0017] The housing includes: a base; a first wall portion, a sidewall projecting from the upper surface of the base portion; a second wall portion, an end wall projecting from the upper surface of the base portion and intersecting with the first wall portion; a third wall portion, a sidewall projecting from the upper surface of the base portion, intersecting with the second wall portion and opposite to the first wall portion; and a fourth wall portion, an end wall projecting from the upper surface of the base portion, intersecting with the first wall portion and the third wall portion and opposite to the second wall portion.

[0018] At least one of the power supply terminals is disposed in the end wall; and

[0019] The second terminal is disposed in at least one of the sidewalls and at the base, and includes a contact portion, a bottom portion, an extension portion, and a mounting portion.

[0020] The base of the housing has a first protrusion positioned higher than the uppermost surface of the bottom of the second terminal.

[0021] Preferably, the first protrusion is connected to the bottom of the second terminal in the longitudinal direction of the socket connector.

[0022] Preferably, the housing further has a second protrusion located between the plurality of second terminals.

[0023] The first protrusion is located between the power terminal and the second terminal.

[0024] Preferably, the first protrusion has an extended protrusion extending in the length direction of the socket connector.

[0025] Preferably, a cutout is present on the bottom surface of the second terminal.

[0026] Furthermore, according to this utility model, a plug connector is provided, which is a plug connector that combines with the aforementioned socket connector, comprising:

[0027] A plug housing includes: a base; a first wall portion, a sidewall projecting from the upper surface of the base portion; a second wall portion, an end wall projecting from the upper surface of the base portion and intersecting with the first wall portion; a third wall portion, a sidewall projecting from the upper surface of the base portion, intersecting with the second wall portion and opposite to the first wall portion; and a fourth wall portion, an end wall projecting from the upper surface of the base portion, intersecting with the first wall portion and the third wall portion and opposite to the second wall portion.

[0028] At least one of the first plug terminals, serving as power terminals, is disposed in the end wall; and

[0029] The second plug terminal is disposed in at least one of the side walls and the base, and includes an extension and a mounting portion.

[0030] The sidewall of the plug housing has a first recess positioned lower than the uppermost surface of the second plug terminal.

[0031] When the socket connector is engaged with the plug connector, the first protrusion is received in the first recess.

[0032] Preferably, the first recess has an extended recess that extends in the length direction of the plug connector.

[0033] Preferably, the extended protrusion is received in the extended recess.

[0034] Preferably, a cutout is present on the upper surface of the second plug terminal.

[0035] Preferably, the extended recess is positioned at the cutout portion of the second plug terminal.

[0036] [Effects of the utility model]

[0037] According to this utility model, regarding Figure 1, Figure 2 , Figure 4 The protrusions (bulges) 20-5-P1, 20-5-P1E, 20-5-P2, and 20-5-P3, along with the recesses 10-5-R1, 10-5-R1E, and 10-5-R2, function like walls, thus reducing movement when joined.

[0038] exist Figure 3 Regarding the cutout 20-3-N of the socket connector 20, it can be considered that the cutout 20-3-N is formed at the signal terminal 20-31. However, from another perspective, it can also be considered that the cutout 20-3-N extends from the short signal terminal 20-31. D The indicated length, and a cutout 20-3-N next to the extended portion. Considering interference with the power supply terminal 20-1 (particularly the island portion 20-1-I in the power supply terminal), it can be considered that an increase in L, which would not have been possible previously, is added. D The length of the signal terminal 20-31 is increased due to the presence of the cutout 20-3-N, which narrows the distance between the signal terminal 20-31 and the island portion 20-1-I. Since a larger signal terminal 20-3 provides better mounting or mating force with the mating connector 10, the length of the signal terminal 20-31 is increased. D The length (creating a 20-3-N cut to eliminate the resulting interference) is significant.

[0039] In addition, although Figure 3 The shell 20-5 is omitted, but refer to Figure 4 Regarding the cutout 20-3-N of the socket connector 20, it also has the following advantages: a first protrusion 20-5-P1 is formed at the part where such metal is removed as a housing 20-5, thereby further securing the area of ​​the housing 20-5.

[0040] about Figure 9 Since the entire (almost the entire) bottom surface of the bottom 20-3-B can be used as a mounting part, it has the following effects: it can be mounted to the substrate with a very large area, and the current movement path is shortened, which reduces the temperature of the product during operation (reduces heat generation).

[0041] about Figure 11 Since the two ends of the signal terminals 20-32 in the length direction (X direction) are covered by the housing 20-5, lead combustion is prevented.

[0042] However, this is just one example of the effect, and of course, the effects brought about by the structure of this utility model are not limited to this.

[0043] The effects of this utility model are not limited to the above-described examples, and this specification contains a wider range of effects. Attached Figure Description

[0044] Figure 1 This is a perspective view of the upper surface of an embodiment of the socket connector 20 in the electrical connector according to the present invention.

[0045] Figure 2 This is a perspective view of the upper surface of an embodiment of the plug connector 10 in the electrical connector according to the present invention.

[0046] Figure 3 It is Figure 1 Socket connector 20 and Figure 2 The plug connector 10 is shown together with its respective housing 20-5 and 10-5 removed from the figure.

[0047] Figure 4 It is Figure 1 Socket connector 20 and Figure 2 The plug connector 10 is shown together with the plug connector 10. Figure 1 , Figure 2 The image is shown magnified from a slightly different angle.

[0048] Figure 5 This shows the appearance of the socket connector 20 and the plug connector 10 combined.

[0049] Figure 6 The signal terminals 10-31 of the plug connector 10 are indicated.

[0050] Figure 7 Indicates the pair along line AA' Figure 5 The cross-sectional view showing the combined state after cutting.

[0051] Figure 8 This is a top view of the jack connector 20.

[0052] Figure 9 yes Figure 8 The bottom view of the jack connector 20 shown.

[0053] Figure 10 Indicates along Figure 8 The cross-sectional view of the BB' wire cut shown.

[0054] Figure 11 Showing with Figure 8 The part corresponding to the second part enclosed by the dashed line.

[0055] Figure 12 Showing with Figure 8 The part corresponding to the third part enclosed by the dotted line.

[0056] Figure 13 (a) Figure 13 (b) is a diagram showing the power terminal (10-1) of the plug connector 10.

[0057] [Explanation of Symbols]

[0058] 10: Plug connector

[0059] 10-1 (10-11, 10-12): Power supply terminal

[0060] 10-11: First power terminal (one side of power terminal (10-1))

[0061] 10-12: Second power terminal (the other side of power terminal (10-1))

[0062] 10-11-C1: First Cover Section

[0063] 10-11-C2: Second Cover Section

[0064] 10-11-CU: First upper cover

[0065] 10-12-C3: Third Cover Section

[0066] 10-12-C4: Fourth Cover Section

[0067] 10-12-CU: Second upper cover

[0068] 10-1-M1: First Installation Section

[0069] 10-1-M2: Second Installation Section

[0070] 10-1-M3: Third Installation Department

[0071] 10-1-M4: Fourth Installation Section

[0072] 10-1-M5: Fifth Installation Department

[0073] 10-1-M6: Sixth Installation Department

[0074] 10-1-M7: Seventh Installation Department

[0075] 10-1-M8: Eighth Installation Department

[0076] 10-3: Signal terminal

[0077] 10-3-E: Extension

[0078] 10-3-M: Installation Department

[0079] 10-3-N: Incision site (cutout)

[0080] 10-31: Signal terminal

[0081] 10-32: Signal terminal

[0082] 10-33: Signal terminal

[0083] 10-5: Shell (Mold Section)

[0084] 10-5-B: Base

[0085] 10-5-R1: First recess

[0086] 10-5-R1E: Extended recess

[0087] 10-5-R2: Second recess

[0088] 10-5-W1: First wall section

[0089] 10-5-W2: Second wall section

[0090] 10-5-W3: Third wall section

[0091] 10-5-W4: Fourth wall section

[0092] 20: Socket connector (socket connector)

[0093] 20-1: Power terminals

[0094] 20-1-I: Island

[0095] 20-3: Signal terminal

[0096] 20-3-B: Bottom

[0097] 20-3-C: Contact area

[0098] 20-3-E: Extension

[0099] 20-3-M: Installation Department

[0100] 20-3-N: Incision site (cutout)

[0101] 20-31: Signal terminal

[0102] 20-32: Signal terminal

[0103] 20-33: Signal terminal

[0104] 20-5: Shell (Mold Section)

[0105] 20-5-B: Base

[0106] 20-5-I: Central Island Division

[0107] 20-5-P1: First protrusion

[0108] 20-5-P1E: Extended protrusion

[0109] 20-5-P2: Second protrusion

[0110] 20-5-P3: Third protrusion

[0111] 20-5-W1: First wall section

[0112] 20-5-W2: Second wall section

[0113] 20-5-W3: Third wall section

[0114] 20-5-W4: Fourth wall section

[0115] CM: Location

[0116] L D L1, L2, L3, L5, L6: Length

[0117] OA, OB: Points Detailed Implementation

[0118] The advantages and features of this invention, as well as the methods of achieving them, will become apparent from the accompanying drawings and the embodiments described in detail below. However, this invention is not limited to the embodiments disclosed below, but is implemented in various different forms, and these embodiments are provided only to complete the disclosure of this invention and to fully convey the scope of the invention to those skilled in the art to which it pertains, and this invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same constituent elements.

[0119] Figure 1 This is a perspective view of the upper surface of an embodiment of the socket connector 20 in the electrical connector according to the present invention.

[0120] In this specification, the term "electrical connector" may be used as "plug connector" depending on the circumstances. Figure 2 The term 10) may be used as appropriate, and the term 20 may be used as a socket connector (also known as a receptacle connector), or the term 10 may be used as both (or an assembly thereof) of the plug connector 10 and the socket connector 20.

[0121] As mentioned above, the jack connector 20 is also called the socket connector 20.

[0122] Figure 1 The socket connector 20 is compatible with the plug connector ( Figure 2 10) The structure of interlocking and combining with each other.

[0123] As an example, in Figure 1The diagram shows the power terminal 20-1, signal terminal 20-3, and housing 20-5 (mold part) of the jack connector 20. For ease of explanation, it is referred to as signal terminal 20-3, but it does not necessarily have to be a signal terminal; it can also be a terminal with other functions.

[0124] Power terminal 20-1 is a metal structure used to supplement the strength of the socket connector 20, and can also input / output power signals. Signal terminal 20-3 can input / output data signals. Figure 1 The diagram shows three signal terminals 20-31, 20-32, and 20-33, each with a different shape, as signal terminal 20-3. However, in... Figure 1 or Figure 3 In one embodiment, strictly speaking, since the four signal terminals 20-31 are left-right symmetrical (centered on the axis of the connector's length direction), they can be divided into two types, with two of each type. Additionally, it is shown that the four signal terminals 20-32 are identical in appearance to each other, and the four signal terminals 20-33 are also identical in appearance to each other, but this is a preferred embodiment and is not a limitation.

[0125] and Figure 1 The illustrations may differ, but an embodiment may also exist where only one type of signal terminal 20-3 exists, with all of them having the same shape.

[0126] Furthermore, the case where the power terminal 20-1 is an integrated component is also an example, but it is not limited to this. For example, the power terminal 20-1 may also be manufactured separately from the power terminal as a separate fitting. Moreover, the three terminals 20-31, 20-32, and 20-33 are referred to as signal terminals 20-3, but this is not the only case; some of these terminals may also be used for other purposes such as power terminals instead of being used as signal terminals.

[0127] Alternatively, for example, signal terminal 20-3 can also consist of four pins that allow a current of 0.3A, and can function as a power supply terminal by allowing a current exceeding 0.3A, such as 5A. However, having four pins is just one example. For reference, in Figure 1 In the example, there are 12 signal terminals 20-3.

[0128] The housing 20-5 has a base 20-5-B. The housing 20-5 has a wall portion protruding from the upper surface of the base portion, on which power terminals 20-1 and signal terminals 20-3 are formed. In addition, the housing 20-5 not only has a wall portion protruding from the base portion (at the edge), but also has an island portion 20-5-I (central island portion) (in the middle).

[0129] The wall is generally formed by four parts, including the first wall part 20-5-W1, the second wall part 20-5-W2, the third wall part 20-5-W3, and the fourth wall part 20-5-W4. For example... Figure 1 As shown, it can be observed that the first wall portion 20-5-W1, the second wall portion 20-5-W2, the third wall portion 20-5-W3, and the fourth wall portion 20-5-W4 are connected in that order, and the fourth wall portion 20-5-W4 is connected to the first wall portion 20-5-W1 again.

[0130] Although various graphic symbols are used, the first wall 20-5-W1, the second wall 20-5-W2, the third wall 20-5-W3, the fourth wall 20-5-W4, the island 20-5-I (central island), and the base 20-5-B are all part of the shell 20-5 (mold part).

[0131] The housing 20-5 (molding part) of the jack connector 20 is preferably made of plastic, such as liquid crystal polymer (LCP). Alternatively, the housing 20-5 may be formed of an insulator including resin and epoxy resin, but is not limited thereto. The power terminal 20-1 and signal terminal 20-3 of the jack connector 20 are preferably made of metal, although not limited thereto; for example, copper may be used, and copper alloys may be plated with gold (nickel underlayer).

[0132] Multiple signal terminals 20-3 are provided at the first wall portion 20-5-W1 and the third wall portion 20-5-W3 extending in the X direction (the length direction of the jack connector 20).

[0133] Figure 2 This is a perspective view of the upper surface of an embodiment of the plug connector 10 in the electrical connector according to the present invention.

[0134] As an example, in Figure 2 The diagram shows the power terminal 10-1 (also called a fitting terminal or fitting), signal terminal 10-3, and housing 10-5 (mold part) of the plug connector 10. For ease of explanation, it is referred to as signal terminal 10-3, but it does not necessarily have to be a signal terminal and may be a terminal with other functions.

[0135] Power terminal 10-1 (fittings) is a metal structure used to supplement the strength of connector 10. Power terminal 10-1 can input / output power signals. Figure 2 In this case, the fittings and power terminals are integrated. However, this is not the only possibility; the fittings and power terminals can also be separated and made from individual components.

[0136] In addition, from Figure 2It can be seen that the power terminal 10-1 is divided into a power terminal 10-11 on one side and a power terminal 10-12 on the other side (i.e., including two separate sheets). This is achieved by removing the housing 10-5. Figure 3 This allows for a clearer understanding.

[0137] Signal terminal 10-3 can input / output data signals. In this embodiment, signal terminal 10-3 includes three types with different shapes (i.e., 10-31, 10-32, and 10-33). Details about them will be described below.

[0138] Additionally, for example, signal terminal 10-3 can consist of four pins that allow a current of 0.3A, or it can function as a power supply terminal that allows a current exceeding 0.3A, such as 5A. However, having four pins is just one example. For reference, in Figure 2 In the example, there are 12 signal terminals 10-3 (4 signal terminals 10-31, 4 signal terminals 10-32, and 4 signal terminals 10-33). However, in Figure 2 or Figure 3 In one embodiment, strictly speaking, the four signal terminals 10-31 are left-right symmetrical (centered on the axis of the connector's length direction), and therefore can be classified into two types, two of each type. Additionally, it is shown that the four signal terminals 10-32 are identical in appearance to each other, and the four signal terminals 10-33 are also identical in appearance to each other; this is a preferred embodiment, but not a limitation thereof.

[0139] and Figure 2 The illustrations may differ, but an embodiment may also exist where only one type of signal terminal 10-3 exists, with all of them having the exact same shape.

[0140] The housing 10-5 has a base 10-5-B. The housing 10-5 has a wall portion protruding from the upper surface of the base portion, and power terminals 10-1 (fittings), signal terminals 10-3, etc. are formed on the wall portion.

[0141] The wall is generally formed by four parts, including the first wall part 10-5-W1, the second wall part 10-5-W2, the third wall part 10-5-W3, and the fourth wall part 10-5-W4. For example... Figure 2 As shown, the components are connected in the following order: first wall portion 10-5-W1, second wall portion 10-5-W2, third wall portion 10-5-W3, and fourth wall portion 10-5-W4, with the fourth wall portion 10-5-W4 then connecting to the first wall portion 10-5-W1. Figure 2 In the connector, the first wall portion 10-5-W1 and the third wall portion 10-5-W3 are side walls, and the second wall portion 10-5-W2 and the fourth wall portion 10-5-W4 are end walls.

[0142] Although various graphic symbols are used, the first wall 10-5-W1, the second wall 10-5-W2, the third wall 10-5-W3, the fourth wall 10-5-W4, and the base 10-5-B are all part of the shell 10-5 (mold part).

[0143] The housing 10-5 (mold portion) of the plug connector 10 is preferably made of plastic, such as liquid crystal polymer. Alternatively, the housing 10-5 may be formed of an insulator including resin and epoxy resin, but is not limited thereto. The power terminal 10-1 and signal terminal 10-3 of the plug connector 10 are preferably made of metal, but are not limited thereto; for example, copper may be used, and the copper alloy may be gold-plated (with a nickel underlayer).

[0144] Figure 3 It is Figure 1 Socket connector 20 and Figure 2 The plug connector 10 is shown together with its respective housing 20-5 and 10-5 removed from the figure.

[0145] In the jack connector 20, when the integrated housing 20-5 is removed, the structure of the power terminal 20-1 and the signal terminal 20-3 can be clearly seen, as shown in... Figure 3 This can be seen from the text.

[0146] Similarly, in the plug connector 10, when the integrated housing 10-5 is removed, the structure of the power terminals 10-1 (including the spaced-apart 10-11 and 10-12) and the signal terminals 10-3 can be clearly seen, as in... Figure 3 This can be seen from the text.

[0147] In particular, the notch 20-3-N can be identified in signal terminals 20-31, and the notch 10-3-N can be identified in signal terminals 10-31.

[0148] In particular, regarding the cutout 20-3-N of the socket connector 20, it can be considered that the cutout 20-3-N is formed at the signal terminal 20-31, but from another viewpoint, it can also be considered that it extends from the short signal terminal 20-31. D The indicated length, and a cutout 20-3-N next to the extended portion. Considering interference with the power supply terminal 20-1 (particularly the island portion 20-1-I in the power supply terminal), it can be considered that an increase in L, which would not have been possible previously, is added. DThe length of the signal terminal 20-31 is increased due to the presence of the cutout 20-3-N, which narrows the distance between the signal terminal 20-31 and the island portion 20-1-I. Since a larger signal terminal 20-3 provides better mounting or mating force with the mating connector 10, the length of the signal terminal 20-31 is increased. D The length (creating a 20-3-N cut to eliminate the resulting interference) is significant.

[0149] In addition, Figure 3 The shell 20-5 is omitted, but please refer to the description below. Figure 4 Regarding the cutout 20-3-N of the socket connector 20, it also has the following advantages: a first protrusion 20-5-P1 is formed at the part where such metal is removed as a housing 20-5, thereby further securing the area of ​​the housing 20-5.

[0150] Figure 4 It is Figure 1 Socket connector 20 and Figure 2 The plug connector 10 is shown together with the plug connector 10. Figure 1 , Figure 2 The image is shown magnified from a slightly different angle.

[0151] exist Figure 4 In the shown socket connector 20, the signal terminal 20-3 (which is also the signal terminal 20-31) includes a contact portion 20-3-C, a bottom portion 20-3-B, an extension portion 20-3-E, and a mounting portion 20-3-M. The side cross-sectional structures of the bottom portion 20-3-B, the extension portion 20-3-E, and the mounting portion 20-3-M can also be seen from the description below. Figure 7 Confirmed in the AA' cross-sectional view ( Figure 7 The reason why contact part 20-3-C is not shown is because Figure 5 The AA' line shown does not have a contact part 20-3-C).

[0152] exist Figure 4 In the signal terminal 20-31, there is a protrusion 20-5-P1 (also called the first protrusion 20-5-P1) on the right side (-X direction) and a protrusion 20-5-P2 (also called the second protrusion 20-5-P2) on the left side (+X direction). The first protrusion 20-5-P1 and the second protrusion 20-5-P2 are part of the housing 20-5. The protrusion is indicated by... Figure 4 It protrudes in the height direction (+Z direction). That is, Figure 4The height of the upper surface of the first protrusion 20-5-P1 is higher than the height of the upper surface of the bottom 20-3-B, and the height of the upper surface of the second protrusion 20-5-P2 is higher than the height of the upper surface of the bottom 20-3-B. The heights of the first protrusion 20-5-P1 and the second protrusion 20-5-P2 are preferably the same, but are not limited thereto.

[0153] The first protrusion 20-5-P1 of the base 20-5-B, located on the upper side of the bottom 20-3-B, is in a position where it continuously overlaps (with overlapping dimensions) with a portion of the extension 20-3-E, the bottom 20-3-B, and the contact portion 20-3-C in the width direction of the socket connector 20. Here, "overlapping position" (or "with overlapping dimensions") does not mean actual contact, but rather indicates a dimension (range) in the width direction, from... Figure 4 or Figure 8 As can be seen from this. Figure 4 or Figure 8 It can also be seen that the first protrusion 20-5-P1 (or the extended protrusion 20-5-P1E) is not in contact with the contact portion 20-3-C.

[0154] Furthermore, the first protrusion 20-5-P1 has a length direction of the connector ( Figure 4 An extension protrusion 20-5-P1E extends in the (C+X direction). The height of the first protrusion 20-5-P1 and the height of the extension protrusion 20-5-P1E are preferably the same, but not limited thereto.

[0155] In addition, the height of the first protrusion 20-5-P1 is higher than the height of the upper surface of the base 20-5-B located to its right (in the -X direction).

[0156] Will Figure 4 The plug connector 10 shown is reversed in the vertical direction and is combined with the socket connector 20.

[0157] The combined shape is Figure 5 As shown in the figure, the combined cross-sectional structure can also be seen from the following description. Figure 7 Confirm this in the AA' cross-sectional view.

[0158] exist Figure 4 In the plug connector 10, a recess 10-5-R1 (also referred to as the first recess 10-5-R1) is present on the right side (-X direction) of the signal terminal 10-31, and a recess 10-5-R2 (also referred to as the second recess 10-5-R2) is present on the left side (+X direction) of the signal terminal 10-31. The first recess 10-5-R1 and the second recess 10-5-R2 are part of the housing 10-5. A recess is indicated as... Figure 4Retreat in the -Z direction at medium altitude. That is, in Figure 4 In this configuration, the height of the upper surface of the first recess 10-5-R1 is lower than the height of the upper surface of the signal terminal 10-31, and the height of the upper surface of the second recess 10-5-R2 is lower than the height of the upper surface of the signal terminal 10-31. Preferably, the heights of the first recess 10-5-R1 and the second recess 10-5-R2 are the same, but this is not a limitation.

[0159] Furthermore, the first recess 10-5-R1 has a length direction of the connector ( Figure 4 An extended recess 10-5-R1E extends in the (+X direction). The height of the first recess 10-5-R1 and the height of the extended recess 10-5-R1E are preferably the same, but not limited thereto.

[0160] In addition, the height of the upper surface of the first recess 10-5-R1 is lower than the height of the upper surface of the power terminal 10-1 located to its right (in the -X direction).

[0161] when Figure 4 When the socket connector 20 and the plug connector 10 are combined, they are engaged in the following manner: the first protrusion 20-5-P1 engages with the first recess 10-5-R1, the extended protrusion 20-5-P1E engages with the extended recess 10-5-R1E, and the second protrusion 20-5-P2 engages with the second recess 10-5-R2. Engagement means that the recess and the protrusion are roughly engaged, not necessarily that all surfaces are in contact.

[0162] Regarding the cutout 20-3-N of the jack connector 20, it also has the following advantages: a first protrusion 20-5-P1 is formed at the part where such metal is removed as a housing 20-5, thereby further securing the area of ​​the housing 20-5.

[0163] Figure 5 This shows the appearance of the socket connector 20 and the plug connector 10 combined.

[0164] exist Figure 5 In the middle, the jack connector 20 is with Figure 4 The same coordinate system in Figure 5 In the middle, the plug connector 10 and Figure 4 Compared to the vertical reversal (i.e., reversal in the Z direction), it is combined with the jack connector 20. That is, in Figure 5 The appearance of the plug connector 10 seen in the image is its bottom surface, and it is similar to that in... Figure 4 The appearance of the upper surface of the plug connector 10 seen in the image is different.

[0165] Figure 6 The signal terminals 10-31 of the plug connector 10 are indicated.

[0166] As an example, Figure 6 The signal terminals 10-31 shown are Figure 2 The first part surrounded by the dashed line corresponds to the four signal terminals 10-31 shown.

[0167] like Figure 6 As shown, the signal terminal 10-31 has an extension 10-3-E and a mounting portion 10-3-M, and a cutout portion 10-3-N (cutout) is formed at the signal terminal 10-31.

[0168] It can be considered that a cutout 10-3-N of length L2 is formed in the terminal 10-31 of length L1+L2, and from another point of view, it can also be considered that L2 is further extended in the terminal 10-31 of length L1 (and the unextended part becomes the cutout 10-3-N).

[0169] Figure 7 Indicates the pair along line AA' Figure 5 The cross-sectional view showing the combined state after cutting.

[0170] Figure 7 The middle of line AA' passes through point OA. For convenience, Figure 7 Only the cross-sectional view corresponding to half of line AA' (i.e., the line connecting OA to A') is shown. Although not limited to this, it is preferable that the omitted portion is a symmetrical structure.

[0171] exist Figure 7 As can be seen from this, connector 20 is still... Figure 1 , Figure 3 , Figure 4 The coordinate system shown, and the plug connector 10 and Figure 2 , Figure 3 , Figure 4 Compared to the coordinate system shown, the plug connector 10 is in a reversed (reversed in the Z direction) engagement state.

[0172] from Figure 7 It can be seen that the cut of the plug connector 10 ( Figure 6 The portion containing the cutout 10-3-N engages with the portion containing the extension protrusion 20-5-P1E of the socket connector 20. The portion containing the extension protrusion 20-5-P1E also engages with the portion containing the cutout 20-3-N (see reference 20-3-N). Figure 3 Near the ) area. Furthermore, the meshing can also be a general combination (accommodation) of the recessed part (cutout) and the protruding part (protrusion), and it is not necessary for them to be in contact.

[0173] Thus, since the protrusions (bulges) 20-5-P1, 20-5-P1E, 20-5-P2, 20-5-P3 and the recesses 10-5-R1, 10-5-R1E, 10-5-R2 function like walls, they have the effect of reducing movement when joined.

[0174] exist Figure 7 In the cross-sectional view, signal terminal 10-31 appears to be divided into two parts, but this is due to the cutout 10-3-N, which makes the cross-section appear this way. In reality... Figure 6 As shown, signal terminal 10-31 is formed from a sheet.

[0175] exist Figure 7 In the cross-sectional view, signal terminal 20-31 has a bottom portion 20-3-B, an extension portion 20-3-E, and a mounting portion 20-3-M. However, not only the mounting portion 20-3-M, but also the bottom surface of the bottom portion 20-3-B can function as a mounting portion for the substrate. Therefore, the adhesion to the substrate resulting from the mounting is more stable.

[0176] In addition, Figure 7 In the cross-sectional view, the contact portion 20-3-C of the signal terminal 20-31 is not visible because the cut-off wire AA' does not cross the contact portion 20-3-C, for example... Figure 5 AA' line as Figure 8 The AA' line generally only spans the bottom 20-3-B, the extension 20-3-E, and the mounting part 20-3-M.

[0177] Figure 8 This is a top view of the jack connector 20.

[0178] As described above, the signal terminal 20-31 includes a mounting portion 20-3-M, an extension portion 20-3-E, a bottom portion 20-3-B, and a contact portion 20-3-C.

[0179] Figure 9 yes Figure 8 The bottom view of the jack connector 20 shown.

[0180] As described above, the signal terminal 20-31 includes a mounting portion 20-3-M, an extension portion 20-3-E, and a bottom portion 20-3-B. However, compared with... Figure 8 The difference lies in Figure 9 The middle contact portion 20-3-C and the extension portion 20-3-E are not visible. The reason why the extension portion 20-3-E is not visible is that the curved portion of the extension portion 20-3-E is filled with part of the housing 20-5 (see reference). Figure 10 (The cross-sectional view is filled with the shape of part of the shell 20-5). Although not limited to this, as an example, with Figure 9 Compared to the bottom surface of the part in the central section where the symbol 20-5 is recorded, it is located in... Figure 9 The bottom surface of the two sections containing the symbol 20-5 on the -Y side is higher (in the +Z direction). That is, as shown... Figure 10 As shown in the cross-sectional view, the lower part of the extension 20-3-E is partially filled with the shell 20-5 in a hollow state.

[0181] Figure 9 The diagram omits certain parts and shows six signal terminals 20-3 (20-31, 20-32, 20-33). The bottom surface of the base 20-3-B of signal terminal 20-31 can be used as a mounting portion for the substrate. Similarly, the bottom surface of the base 20-3-B of signal terminal 20-32 can be used as a mounting portion for the substrate. Likewise, the bottom surface of the base 20-3-B of signal terminal 20-33 can be used as a mounting portion for the substrate.

[0182] In particular, such as Figure 9 As shown, since the entire (almost the entire) surface of the bottom surface of the bottom 20-3-B can be used as a mounting part for the substrate (not shown), it can be mounted to the substrate with a very large area, thus having the effect of shortening the current movement path and reducing the temperature of the product during operation (the effect of reducing heat generation).

[0183] Figure 10 Indicates along Figure 8 The cross-sectional view of the BB' wire cut shown.

[0184] Figure 8 The BB' line passes through point OB in the middle. For convenience, Figure 10 Only the cross-sectional view corresponding to half of line BB' (i.e., the line connecting OB to B') is shown. Although not limited to this, it is preferable that the omitted portion is a symmetrical structure.

[0185] exist Figure 10 As can be seen from this, connector 20 is still... Figure 1 , Figure 3 , Figure 4 The coordinate system shown, and the plug connector 10 and Figure 2 , Figure 3 , Figure 4 Compared to the coordinate system shown, the plug connector 10 is in a reversed (reversed in the Z direction) engagement state.

[0186] exist Figure 10In the cross-sectional view, signal terminal 20-32 has a contact portion 20-3-C, a bottom portion 20-3-B, an extension portion 20-3-E, and a mounting portion 20-3-M. However, not only the mounting portion 20-3-M, but also the bottom surface of the bottom portion 20-3-B can function as a mounting portion for the substrate. Therefore, the adhesion to the substrate resulting from the mounting is more stable.

[0187] In particular, since the entire (almost the entire) bottom surface of the bottom 20-3-B (not just the mounting part 20-3-M) can be used as a mounting part, it can be mounted to the substrate with a very large area, thus having the effect of shortening the current movement path and reducing the temperature of the product during operation (reducing heat generation).

[0188] Figure 11 Showing with Figure 8 The part corresponding to the second part enclosed by the dashed line.

[0189] The two ends of the signal terminal 20-32 in the length direction (X direction) are covered by the housing 20-5.

[0190] That is, in Figure 11 Although covered by housing 20-5, the total length of signal terminal 20-32 in the connector length direction (X direction) is not L4 but L3. It is in a state where the length of signal terminal 20-32 to the right of L6 is covered by housing 20-5 and the length of signal terminal 20-32 to the left of L5 is covered by housing 20-5.

[0191] Thus, since the two ends of the signal terminals 20-32 in the length direction (X direction) are covered by the housing 20-5, lead combustion is prevented.

[0192] Strictly speaking, Figure 11 The housing 20-5 on the left side of the middle terminal 20-32 (i.e., Figure 11 The part represented by the Chinese stencil symbol L5 is the third protrusion 20-5-P3. Figure 11 The housing 20-5 on the right side of the middle terminal 20-32 (i.e., Figure 11 The part represented by the Chinese stypographic symbol L6 is the second protrusion 20-5-P2 (see reference). Figure 12 (etc.). Of course, the first to third protrusions 20-5-P1, 20-5-P2, and 20-5-P3 are all part of the shell 20-5.

[0193] At this time, from Figure 11It can be confirmed that a portion of the housing 20-5 covers the upper side of the bottom of the signal terminal 20-32. As described above, the covered portion covers length L5 on one side and length L6 on the other side of the overall X-direction length L3 of the terminal 20-3. Therefore, in reality, only length L4 is visible within the overall X-direction length L3 of the terminal 20-3.

[0194] exist Figure 11 In this illustration, only the terminal 20-32 between the third protrusion 20-5-P3 and the second protrusion 20-5-P2 is shown. However, for the terminal 20-31 between the second protrusion 20-5-P2 and the first protrusion 20-5-P1 (the specific dimensions may vary), a portion of the housing 20-5 may also cover a portion of the terminal.

[0195] exist Figure 1 or Figure 12 Strictly speaking, in terms of the upward protrusion, the use of the terms "third protrusion 20-5-P3" and "second protrusion 20-5-P2" is appropriate. Figure 1 The power terminal 20-1 adjacent portion, represented by the symbol 20-5-B, is sometimes also considered as the base 20-5-B (lower than the third protrusion 20-5-P3 or the second protrusion 20-5-P2) for distinction. However, in a broader sense, since the first to third protrusions 20-5-P1, 20-5-P2, and 20-5-P3 are formed on the base 20-5-B, the "base" of the housing 20-5 can be understood, without confusion, as the upper surface of the housing 20-5 located below the wall portions 20-5-W1 to 20-5-W4 or the central island portion 20-5-I (i.e., including the first to third protrusions 20-5-P1, 20-5-P2, and 20-5-P3).

[0196] Then, it is also possible to Figure 11 The illustration depicts "a portion of the base of the housing 20-5 (in the length direction of the connector 20) covering the upper side (and / or a portion of both sides) of the bottom of the second terminal 20-3". That is, the base here does not refer solely to the individual base located lower than the first to third protrusions 20-5-P1, 20-5-P2, 20-5-P3 (i.e., Figure 1The term "power terminal 20-1 adjacent portion" (represented by the symbol 20-5-B) can be understood as the upper surface of the housing 20-5 located below the wall portions 20-5-W1 to 20-5-W4 or the central island portion 20-5-I (i.e., including the meaning of the first to third protrusions 20-5-P1, 20-5-P2, and 20-5-P3). In this case, it can be expressed as "the uppermost part of a portion of the base of the housing 20-5 (e.g., Figure 11 The surfaces represented by L5 and L6 are at a height greater than the top of the bottom of the second terminal 20-3 (e.g., Figure 11 The surface represented by L4 is positioned in a high manner.

[0197] Figure 12 Showing with Figure 8 The part corresponding to the third part enclosed by the dotted line.

[0198] exist Figure 12 In this configuration, the height difference (step difference) between the upper surface of the bottom 20-3-B of the signal terminal 20-32 and the housing 20-5 on its right and left sides is more clearly visible. The housing 20-5 on the right side of the bottom 20-3-B can be considered as the aforementioned second protrusion 20-5-P2 (or its extension), and the housing 20-5 on the left side of the bottom 20-3-B can be considered as the third protrusion 20-5-P3. The heights of the second protrusion 20-5-P2 and the third protrusion 20-5-P3 are preferably the same, but are not necessarily limited to this.

[0199] exist Figure 12 Only the third protrusion 20-5-P3 of the jack connector 20 is shown, but it is preferable to form a third recess 20-5-R3 corresponding to the third protrusion 20-5-P3 in the plug connector 10 for engagement (accommodation).

[0200] The length relationships L3, L4, L5, and L6 of the signal terminals 20-32, which are covered at both ends by a portion of the housing 20-5 (i.e., the second protrusion 20-5-P2 and the third protrusion 20-5-P3), are as follows: Figure 11 As shown in the description.

[0201] Furthermore, the two positions CM, represented by the dashed circles, indicate the state of filling the mold (shell 20-5) through core matching. Figure 12 As can be seen, the central island portion 20-5-I (especially the portion of the central island portion 20-5-I extending along the +Y direction) which is part of the housing 20-5 is connected to the end of the signal terminal 20-32 in the connector length direction.

[0202] Additionally, for example, the above-described matters concerning the jack connector 20 (socket connector) may also apply to the plug connector 10 to the extent that they are not excluded by their nature.

[0203] Figure 13 (a) Figure 13 (b) is a diagram showing the power terminal (10-1) of the plug connector 10.

[0204] Figure 13 (a) indicates the power terminals 10-1 (i.e., 10-11 and 10-12) spaced apart as two sheets without the housing 10-5.

[0205] Figure 13 (b) make Figure 13 (a) The power supply terminal 10-1 is reversed vertically (i.e., reversed in the Z direction).

[0206] Figure 13 (a) power terminal 10-1 and Figure 2 or Figure 3 The power supply terminal 10-1 shown is the same. For example, in Figure 13 (a)(and Figure 3 As can be seen from the diagram, the power terminal 10-1 includes two spaced-apart sheets (i.e., one side 10-11 and the other side 10-12). The one side 10-11 and the other side 10-12 of the power terminal are kept spaced apart from each other by the housing 10-5, and the one side 10-11 and the other side 10-12 are not in direct contact.

[0207] For convenience, hereafter, one side of the power terminal 10-11 will be referred to as the first power terminal 10-11 and the other side of the power terminal 10-12 will be referred to as the second power terminal 10-12.

[0208] Reference Figure 13 (a) The first power terminal 10-11 includes a first covering portion 10-11-C1 covering the side wall, a second covering portion 10-11-C2 covering the end wall, and a first upper covering portion 10-11-CU connecting the first covering portion and the second covering portion from the upper side.

[0209] Furthermore, the first upper cover portion 10-11-CU is included in the width direction of the connector 10 (i.e., Figure 13 (a) A first mounting portion 10-1-M1 and a second mounting portion 10-1-M2 extending upward and downward in the (Y direction) to be mounted on a substrate (not shown).

[0210] Additionally, refer to Figure 13(a) The second power terminal 10-12 includes a third cover portion 10-12-C3 covering the side wall, a fourth cover portion 10-12-C4 covering the end wall, and a second upper cover portion 10-12-CU connecting the third cover portion and the fourth cover portion from the upper side.

[0211] Furthermore, the second upper cover portion 10-12-CU is included in the width direction of the connector 10 (i.e., Figure 13 (a) The third mounting portion 10-1-M3 and the fourth mounting portion 10-1-M4 extend upward and downward in the Y direction to be mounted on the substrate.

[0212] In addition, the first mounting part 10-1-M1 and the second mounting part 10-1-M2 are in the length direction of the connector 10 ( Figure 13 (a) The third mounting part 10-1-M3 and the fourth mounting part 10-1-M4 are also spaced apart in the length direction of the connector 10 (in the X direction). Figure 13 (a) Spacing out in the X direction.

[0213] Furthermore, it is known that, based on the width direction (Y direction) of the connector 10, the second mounting part 10-1-M2 is located inside the first mounting part 10-1-M1 (i.e., in the +Y direction), and the fourth mounting part 10-1-M4 is located inside the third mounting part 10-1-M3 (i.e., in the -Y direction).

[0214] In addition, Figure 13 As can be confirmed in (a), in the width direction (Y direction) of connector 10, the second mounting part 10-1-M2 is opposite to the fourth mounting part 10-1-M4, and the first mounting part 10-1-M1 is opposite to the third mounting part 10-1-M3.

[0215] Furthermore, in the first power terminal 10-11, the portion where the first cover portion 10-11-C1, the second cover portion 10-11-C2, and the first upper cover portion 10-11-CU are connected is formed by deep drawing and is formed continuously without any cutouts.

[0216] It can be seen that this is also the case in the second power terminal 10-12, and the portion where the third cover 10-11-C3, the fourth cover 10-11-C4, and the second upper cover 10-12-CU are connected is formed by deep drawing and is formed continuously without any cut-out portion.

[0217] Next, we will... Figure 13 (b) To explain. As stated above, Figure 13 (b) make Figure 13 (a) The power supply terminal 10-1 is reversed vertically (i.e., reversed in the Z direction).

[0218] exist Figure 13 Eight mounting parts can also be identified in (a), but in reverse order. Figure 13 (b) more clearly identifies the eight mounting sections 10-1-M1 to 10-1-M8.

[0219] These mounting parts 10-1-M1 to 10-1-M8 are used to mount the connector 10 to the substrate (not shown) by means of soldering or the like.

[0220] Regarding the positional relationship of the first mounting part 10-1-M1, the second mounting part 10-1-M2, the third mounting part 10-1-M3, and the fourth mounting part 10-1-M4, through... Figure 13 (a) has been explained. If the positional relationship of the fifth mounting section 10-1-M5, the sixth mounting section 10-1-M6, the seventh mounting section 10-1-M7, and the eighth mounting section is further explained, it is as follows.

[0221] The first cover portion 10-11-C1 includes a fifth mounting portion 10-1-M5 extending in the width direction (-Y direction) of the connector 10, and the second cover portion 10-11-C2 includes a sixth mounting portion 10-1-M6 extending in the length direction (-X direction) of the connector 10.

[0222] The third cover portion 10-12-C3 includes an eighth mounting portion 10-1-M8 extending in the width direction (+Y direction) of the connector 10, and the fourth cover portion 10-12-C4 includes a seventh mounting portion 10-1-M7 extending in the length direction (-X direction) of the connector 10.

[0223] If passed Figure 13 (a) Figure 13 (b) As shown in the description, in one embodiment of the present invention, the main body of the power terminal 10-1 is divided into two parts (i.e., 10-11 and 10-12). When the main body is a single unit, it is difficult to manufacture a large number of mounting parts, but as... Figure 13 (a) Figure 13 As shown in (b), when the main body of the power terminal 10-1 is divided into two, multiple mounting parts can be ensured in various directions.

[0224] Not limited to this, in Figure 13 (a) Figure 13 (b) consists of two main bodies, and each main body has four lead wires (a total of eight lead wires). The ends of the lead wires (i.e., the lower ends of the connector 10 in the height direction (Z direction)) function as mounting parts 10-1-M1 to 10-1-M8.

[0225] This has the following effects: it realizes multiple lead portions (and their corresponding mounting portions), which improves the strength of the mounting, improves the strength of the connector itself, and increases the current path through the power terminal 10-1, thereby making the current flow smoother.

[0226] As an example, with Figure 13 (a) Figure 13 (b) is different from the power terminal 10-1 shown. Assuming that the power terminal formed by a single body is taken as a comparative example, it can be assumed that there is a mounting part at the position corresponding to the eighth mounting part 10-1-M8, a mounting part at the position corresponding to the fifth mounting part 10-1-M5, and a mounting part (or two mounting parts) at the positions corresponding to the sixth mounting part, the seventh mounting part 10-1-M6, and 10-1-M7. It is also assumed that there is no mounting part corresponding to the first mounting part 10-1-M1, the second mounting part 10-1-M2, the third mounting part 10-1-M3, and the fourth mounting part 10-1-M4.

[0227] In this comparative example, since the number of units that can be installed is three (or four), therefore... Figure 13 (a) Figure 13 Compared to the embodiment shown in (b), it has the following disadvantages: the installation strength is low, the strength of the connector itself is also low, and the current path flowing through the power terminal 10-1 is narrowed, making it difficult for current to move.

[0228] On the other hand, in the case mentioned above Figure 13 (a) Figure 13 In the embodiment of (b), deep drawing is exemplified, but it is not necessarily limited to this. Even if the manufacturing is done by bending rather than deep drawing, deep drawing may not be used as long as there is no interference in the unfolding field (the appearance of the power terminals 10-1 before bending (i.e., flattening)). However, deep drawing is preferred because it is more likely to be unaffected by problems such as interference in the unfolding field (i.e., due to increased design freedom).

[0229] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the described embodiments and can be manufactured in various different forms. Furthermore, those skilled in the art will understand that the present invention can be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not as limiting.

Claims

1. A socket connector, which is mounted on a substrate and coupled with a plug connector, characterized in that... include: The housing includes: a base; a first wall portion, a sidewall projecting from the upper surface of the base portion; a second wall portion, an end wall projecting from the upper surface of the base portion and intersecting with the first wall portion; a third wall portion, a sidewall projecting from the upper surface of the base portion, intersecting with the second wall portion and opposite to the first wall portion; and a fourth wall portion, an end wall projecting from the upper surface of the base portion, intersecting with the first wall portion and the third wall portion and opposite to the second wall portion. At least one of the power supply terminals is disposed in the end wall; and The second terminal is disposed in at least one of the sidewalls and the base, and includes a contact portion, a bottom portion, an extension portion, and a mounting portion. The base of the housing has a first protrusion positioned higher than the uppermost surface of the bottom of the second terminal.

2. The socket connector according to claim 1, characterized in that, The first protrusion is in contact with the bottom of the second terminal along the length of the socket connector.

3. The socket connector according to claim 1, characterized in that, The housing also has a second protrusion located between the plurality of second terminals. The first protrusion is located between the power terminal and the second terminal.

4. The socket connector according to any one of claims 1 to 3, characterized in that, The first protrusion has an extended protrusion extending in the length direction of the socket connector.

5. The jack connector according to any one of claims 1 to 3, characterized in that, There is a cutout on the bottom surface of the second terminal.

6. A plug connector, which is a plug connector combined with the socket connector of claim 4, characterized in that... include: A plug housing includes: a base; a first wall portion, a sidewall projecting from the upper surface of the base portion; a second wall portion, an end wall projecting from the upper surface of the base portion and intersecting with the first wall portion; a third wall portion, a sidewall projecting from the upper surface of the base portion, intersecting with the second wall portion and opposite to the first wall portion; and a fourth wall portion, an end wall projecting from the upper surface of the base portion, intersecting with the first wall portion and the third wall portion and opposite to the second wall portion. At least one of the first plug terminals, serving as power terminals, is disposed in the end wall; and The second plug terminal is disposed in at least one of the sidewalls and the base, and includes an extension and a mounting portion. The sidewall of the plug housing has a first recess positioned lower than the uppermost surface of the second plug terminal. When the socket connector is engaged with the plug connector, the first protrusion is received in the first recess.

7. The plug connector according to claim 6, characterized in that, The first recess has an extended recess that extends along the length of the plug connector.

8. The plug connector according to claim 7, characterized in that, The extended protrusion is received in the extended recess.

9. The plug connector according to claim 6, characterized in that, A cutout is present on the upper surface of the second plug terminal.

10. The plug connector according to claim 9, characterized in that, The extended recess is positioned at the cutout of the second plug terminal.

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