Connector Assembly

Abstract

A connector assembly that can achieve excellent operability and high reliability is provided. [Solution] The present invention relates to a connector assembly 1 including a first connector 10 and a second connector 20. The first connector includes a first insulating housing, a first metal shell, and a nut member connected to the first metal shell. The first insulating housing has an accommodating space. The second connector is inserted into the accommodating space along a first direction D1. The second connector includes a second insulating housing, a second metal shell, and an engaging member. A locking hole is formed in the second metal shell. A resilient arm is formed on the engaging member. The resilient arm is configured to be movable in a second direction D2 perpendicular to the first direction and is always biased toward the engaged position. The second connector is fixed to the first connector by a head screw 30.

Description

[Technical Field]

[0001] The present invention relates to a connector assembly, and more particularly to a thin connector assembly with excellent operability. [Background technology]

[0002] Taiwan Utility Model No. M644042U (Patent Document 1) discloses a flexible flat cable connector. The connector in Patent Document 1 has an operating member pivotally supported on an insulating housing. The flexible flat cable is unlocked by pressing the body of the operating member to swing it. However, because this operating member has a certain thickness, this type of connector is not suitable for thinning.

[0003] Taiwan Utility Model No. M591717U (Patent Document 2) discloses a connector for flexible flat cables. Patent Document 2 discloses attaching a male connector housing to the insertion end of a flexible flat cable. This allows the mating direction of the flexible flat cable into the easy-lock connector to be changed. This facilitates automated insertion of the flexible flat cable into the easy-lock connector. Furthermore, it improves the operability of the flexible flat cable and its protection. However, the easy-lock connector disclosed in Patent Document 2 requires simultaneous operation of two separate locking members to release the flexible flat cable, resulting in poor unlocking operability. Because the operating portion of the locking member and the main body of the flexible flat cable are located on the same side, the unlocking operation may be obstructed by the main body of the flexible flat cable. Summary of the Invention

[0004] SUMMARY OF THE INVENTION An object of the present invention is to provide a connector assembly that is easy to operate and highly reliable.

[0005] Another object of the present invention is to provide a connector assembly that is thin and suitable for use in the limited space of small or thin electronic devices.

[0006] It is yet another object of the present invention to provide a connector assembly that is suitable for automated assembly.

[0007] According to an aspect of the present invention, a connector assembly is provided that includes a first connector and a second connector. The first connector is a first insulating housing having an accommodating space, the second connector being inserted into the accommodating space along a first direction and at least a portion of the second connector being accommodated in the accommodating space; a plurality of contacts held by the first insulating housing, arranged along a second direction perpendicular to the first direction, each contact having a contact portion located in the accommodating space and a connection terminal portion located on the opposite side of the contact portion; a first metal shell covering a portion of the first insulating housing and having two first engaging portions formed thereon that face each other in the second direction; at least one nut member connected to the first metal shell and having a threaded hole; The second connector is a second insulating housing; a second metal shell covering a portion of the second insulating housing and having a locking hole corresponding to the at least one nut member formed therein, the locking hole being configured so that a shank of a head screw passes through the locking hole and is screwed into the screw hole of the nut member; two engaging members that are arranged spaced apart from each other in the second direction and are held by the second insulating housing, and have elastic arms that extend in the first direction, and second engaging portions are formed on the elastic arms; When the second connector is mated with the first connector, the second engagement portion engages with the first engagement portion.

[0008] In the connector assembly of the present invention, the second insulating housing has two guide posts formed on a bottom surface thereof, the guide posts extending in the first direction; In the process of fitting the second connector and the first connector, the guide post guides the insertion of the second connector into the accommodating space.

[0009] In the connector assembly of the present invention, the end of each guide post is formed with a chamfer.

[0010] In the connector assembly of the present invention, the first insulating housing is formed with two guide post holes into which the two guide posts are inserted.

[0011] In the connector assembly of the present invention, each guide post surrounds a portion of the resilient arm.

[0012] In the connector assembly of the present invention, the resilient arm is a U-shaped resilient arm.

[0013] In the connector assembly of the present invention, the second metal shell comprises an upper shell and a lower shell; the upper shell is disposed above the second insulating housing; the lower shell is disposed below the second insulating housing, the second connector further includes a flat connection object, the flat connection object includes a head portion and a plurality of electrode portions formed on the head portion, the head portion of the flat connection object is accommodated in a space defined by the second insulating housing and the lower shell, the plurality of electrode portions are exposed from the lower shell, When the second connector is mated with the first connector, the plurality of electrode portions are electrically connected to the plurality of contacts of the first connector.

[0014] In the connector assembly of the present invention, the at least one nut member is fixed to the first metal shell by soldering or welding.

[0015] In the connector assembly of the present invention, the screw hole is disposed so that its central axis is parallel to the first direction.

[0016] In the connector assembly of the present invention, the cross section of the second engaging portion perpendicular to the third direction is convex arc-shaped; The third direction is perpendicular to the first direction and the second direction.

[0017] According to the connector assembly of the present invention, the mating of the first connector and the second connector can be easily achieved through automation without the use of complex equipment. The mating of the first connector and the second connector can be achieved through a secure locking mechanism, thereby achieving a highly reliable mated state.

[0018] According to the connector assembly of the present invention, the dimension of the connector assembly in the third direction (front-rear direction) can be reduced.

[0019] Furthermore, since the locking mechanism is not disposed in the first connector as a board-mounted connector, the difficulty of maintenance can be significantly reduced.

[0020] Those skilled in the art will be able to fully understand the technical features, other objects and advantages of the present invention by reading the specification and accompanying drawings of the present invention. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view of a connector assembly in a mated state according to an embodiment of the present invention; [Figure 2] 1 is a perspective view of an unmated connector assembly according to an embodiment of the present invention; [Figure 3]1 is a perspective view of a socket connector according to an embodiment of the present invention; [Figure 4] 1 is an exploded perspective view of a socket connector according to an embodiment of the present invention; [Figure 5] 1 is a perspective view of a first insulating housing of a socket connector according to an embodiment of the present invention; [Figure 6] 1 is a perspective view of a contact of a socket connector according to an embodiment of the present invention; [Figure 7] 1 is a perspective view of a first metal shell of a socket connector according to an embodiment of the present invention; FIG. [Figure 8] 1 is a perspective view of a nut member of a socket connector according to an embodiment of the present invention; [Figure 9] 1 is a perspective view of a plug connector according to an embodiment of the present invention; [Figure 10] FIG. 1 is another perspective view of a plug connector according to an embodiment of the present invention; [Figure 11] 1 is an exploded perspective view of a plug connector according to an embodiment of the present invention; [Figure 12] 1 is a perspective view of a second insulating housing of a plug connector according to an embodiment of the present invention; FIG. [Figure 13] 1 is a perspective view of an upper shell of a plug connector according to an embodiment of the present invention; [Figure 14] 1 is a plan view of a connector assembly in a locked state according to an embodiment of the present invention; [Figure 15] Cross section along line AA in Figure 14 DETAILED DESCRIPTION OF THE INVENTION

[0022] A connector assembly according to an embodiment of the present invention will now be described with reference to the accompanying drawings. In the drawings, identical components or components having the same functions are designated by the same reference numerals. The drawings are not drawn to scale.

[0023] A connector assembly according to an embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a perspective view of the connector assembly according to the embodiment of the present invention in a mated state. Figure 2 is a perspective view of the connector assembly according to the embodiment of the present invention in an unmated state. The entire connector assembly is designated by the reference numeral 1. The connector assembly 1 includes a socket connector 10 as a first connector and a plug connector 20 as a second connector. The plug connector 20 mates with the socket connector 10 along a first direction D1. In the mated state, the plug connector 20 is fixed to the socket connector 10 by a head screw 30.

[0024] In this embodiment, the socket connector 10 is a board-mounted connector. The plug connector 20 is formed by attaching a connector housing (i.e., second insulating housing) and a connector shell (i.e., second metal shell) to the head portion of a flat connection object, such as a flexible flat cable (FFC) or a flexible flat circuit board (FPC). In this specification, an assembly consisting of the connector housing (i.e., second insulating housing), connector shell (i.e., second metal shell), and flat connection object is referred to as a "second connector" or a "plug connector."

[0025] A socket connector 10 according to an embodiment of the present invention will be described with reference to Figures 3 and 4. Figure 3 is a perspective view of the socket connector according to the embodiment of the present invention. Figure 4 is an exploded perspective view of the socket connector according to the embodiment of the present invention. The socket connector 10 includes a first insulating housing 11, a first metal shell 12, two nut members 13, and a plurality of contacts 14.

[0026] The plug connector 20 is inserted into the socket connector 10 along a first direction D1 (i.e., height direction or mating direction). A flat connection object forming a part of the plug connector 20 may be, but is not limited to, a flexible flat cable (FFC) or a flexible flat circuit board (FPC). The flat connection object may also be a card board. The flat connection object has a plurality of electrodes formed on a head portion of the flat connection object. The plug connector 20 is also a wire-side connector in a wire-to-board connector assembly.

[0027] FIG. 5 is a perspective view of the first insulating housing 11. The structure of the first insulating housing 11 will be described with reference to FIG. 5. The first insulating housing 11 is made of an insulating synthetic resin or polymer material. The first insulating housing 11 has a flat rectangular body 110 and a peripheral wall formed on the edge of the flat rectangular body 110. The flat rectangular body 110 and the peripheral wall define an accommodation space SP. The peripheral wall is formed by a front wall portion 111 and a rear wall portion 112 facing the front wall portion 111.

[0028] The flat rectangular body 110 has a plurality of contact receiving grooves 1101 formed therein. The contact receiving grooves 1101 are arranged along the second direction D2 (i.e., the width direction) and are spaced apart from one another. The flat rectangular body 110 has two guide post holes 1102 spaced apart in the second direction D2. The upper edge of each guide post hole 1102 is chamfered. A recess 1103 is formed in the upper edge of the inner surface of each guide post hole 1102.

[0029] A notch 1110 is formed in the front wall portion 111. The formation of the notch 1110 makes it possible to avoid interference between the front wall portion 111 and the main body of a flat connection object (for example, a cable portion).

[0030] A plurality of contact holding holes 1121 are formed in the rear wall portion 112. Each of the contact holding holes 1121 communicates with a corresponding one of the contact accommodating grooves 1101. Two protrusions 1122 are further formed in the rear wall portion 112 to fix the first metal shell 12 to the first insulating housing 11.

[0031] FIG. 6 is a perspective view showing a plurality of contacts 14. The contacts 14 are arranged in a row along the second direction D2 and held by the first insulating housing 11. Each contact 14 is made of copper or a copper alloy. The contact 14 has a connection terminal portion 141, a held portion 142, a contact arm 143, and a contact portion 144. The contact arm 143 extends from one end of the held portion 142. The connection terminal portion 141 extends from the other end of the held portion 142. The held portion 142 has a barb structure. The held portion 142 is inserted into the contact holding hole 1121 by an interference fit. The contact portion 144 is formed at the distal end of the contact arm 143. Each contact arm 143 extends within the contact accommodating groove 1101 substantially along the third direction D3 (front-rear direction) to the accommodating space SP. The contact portion 144 is located in the accommodating space SP. This allows the contact portions 144 to come into contact with electrode portions formed on a flat connection object. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The connection terminal portions 141 protrude from the first insulating housing 11. The connection terminal portions 141 are soldered to solder pads formed on a circuit board by surface mount technology (SMT). When the socket connector 10 is mounted on a circuit board, the soldering condition of the connection terminal portions 141 can be inspected by automated optical inspection (AOI).

[0032] 7 is a perspective view of the first metal shell 12. The first metal shell 12 is formed by pressing and bending a metal plate (e.g., a plate material made of stainless steel or phosphor bronze). The first metal shell 12 is configured to be substantially U-shaped when viewed from the first direction D1. The first metal shell 12 has two shell side portions 121 and a connecting portion 120 connecting the two shell side portions 121.

[0033] A first soldering portion 1211 is formed near the front end of the shell side portion 121, and a second soldering portion 1212 is formed near the rear end of the shell side portion 121. The first soldering portion 1211 and the second soldering portion 1212 are soldered to solder pads formed on a circuit board using surface mount technology (SMT). This allows the socket connector 10 to be stably mounted on the circuit board. A stopper portion 1213 serving as a first engagement portion is provided approximately in the middle of the upper edge of the shell side portion 121. The stopper portions 1213 of the two shell side portions 121 face each other in the second direction D2. A retained portion 1214 is formed at the far end of the shell side portion 121. The retained portion 1214 has a barb structure and is inserted into a retaining hole formed in the first insulating housing 11 by an interference fit. This allows the far end of the shell side portion 121 to be fixed to the first insulating housing 11.

[0034] An engaging portion 1201 is formed on the rear edge of the connecting portion 120. The engaging portion 1201 engages with a protrusion 1122 on the rear wall portion 112 of the first insulating housing 11. A retained portion 1202 is formed on the inner edge of the connecting portion 120. The retained portion 1202 has a barb structure and is inserted into a retaining hole formed in the first insulating housing 11 by an interference fit. This allows the connecting portion 120 to be fixed to the first insulating housing 11. The engagement between the engaging portion 1201 and the protrusion 1122 prevents the first metal shell 12 from coming off the first insulating housing 11.

[0035] An alignment hole 1203 is formed in the connecting portion 120. When the plug connector 20 is picked up by a robot arm and aligned with the accommodation space SP of the socket connector 10, the alignment hole 1203 functions as an alignment mark that is recognized by a machine vision system.

[0036] FIG. 8 is a perspective view of the nut member 13. The nut member 13 includes a rectangular plate-shaped main body 130 and a fixing portion 131. The plate-shaped main body 130 is formed with a sleeve 1301 having a screw hole. The plate-shaped main body 130 is installed so as to be perpendicular to the first direction D1. The central axis L1 of the screw hole (see FIG. 15) is parallel to the first direction D1. The fixing portion 131 is installed so as to be perpendicular to the second direction D2. The fixing portion 131 is fixed to the shell side portion 121 of the first metal shell 12 by soldering or welding, for example, laser beam welding.

[0037] A plug connector 20 according to an embodiment of the present invention will be described with reference to Figures 9, 10, and 11. Figure 9 is a perspective view of the plug connector according to the embodiment of the present invention. Figure 10 is another perspective view of the plug connector according to the embodiment of the present invention. Figure 11 is an exploded perspective view of the plug connector 20 according to the embodiment of the present invention. The plug connector 20 includes a second insulating housing 21, a second metal shell, two engaging members 24, and a flat connecting object 25. The second metal shell is composed of an upper shell 22 and a lower shell 23.

[0038] The second insulating housing 21 will be described with reference to FIGS. 11 and 12. FIG. 12 is a perspective view of the second insulating housing 21. The second insulating housing 21 is made of an insulating synthetic resin or polymer material. The second insulating housing 21 includes a flat, rectangular main body 210 and side portions 211 located on both sides of the main body 210 in the second direction D2. Four positioning holes 2101 for positioning the upper shell 22 are formed in the upper surface of the main body 210. Two protrusions 2102 are formed in the lower surface of the main body 210. The protrusions 2102 engage with notches 2510 (described below) in the flat connection object 25. Each side portion 211 is formed with an accommodation hole 2110 for accommodating the engaging member 24. As shown in FIG. 11, each side portion 211 is formed with a guide post 2111 extending downward in the first direction from the lower surface thereof. During the process of inserting the plug connector 20 into the socket connector 10, the guide posts 2111 guide the insertion of the plug connector 20 and align the plug connector 20.

[0039] The upper shell 22 and the lower shell 23 will be described with reference to Figures 11 and 13. Figure 13 is a perspective view of the upper shell 22. Details of the upper shell 22 are shown in Figures 10 and 13. Details of the lower shell 23 are shown in Figure 11. The upper shell 22 and the lower shell 23 are formed by pressing and bending a metal plate (for example, a plate material made of stainless steel or phosphor bronze). The upper shell 22 is disposed above the second insulating housing 21. The lower shell 23 is disposed below the second insulating housing 21.

[0040] The upper shell 22 has a main body 220. The main body 220 of the upper shell 22 has a flat surface and can be adsorbed by a vacuum suction nozzle. An alignment hole 2201 is formed in the main body 220 of the upper shell 22. Similar to the alignment hole 1203, the alignment hole 2201 functions as an alignment mark recognized by a machine vision system. Two laterally extending portions 221 are formed on both side edges of the main body 220 of the upper shell 22 in the second direction D2. The laterally extending portions 221 are formed with locking holes 2210 corresponding to the nut member 13. When the connector assembly is mated, the locking holes 2210 are approximately aligned with the screw holes of the nut member 13. In this state, by threading the shank of the cephalic screw 30 into the screw holes, the laterally extending portions 221 are sandwiched between the head of the cephalic screw 30 and the nut member 13.

[0041] Two engagement portions 222 are formed on the side edges of the main body 220 of the upper shell 22. Four positioning tabs 2202 that fit into the positioning holes 2101 are formed on the underside of the upper shell 22. By inserting the positioning tabs 2202 into the positioning holes 2101, it is possible to prevent the upper shell 22 from moving relative to the second insulating housing 21 within a plane perpendicular to the first direction D1.

[0042] The lower shell 23 has a main body 230. The main body 230 has a notch 2301. A portion of the bottom surface of the flat connection object 25 is exposed through the notch 2301. Two first restriction portions 2302 and two second restriction portions 2303 are formed on the front and rear edges of the lower shell 23. Two protrusions 232 are formed on the side edges of the lower shell 23. By engagement between the protrusions 232 and the engaging portions 222, the upper shell 22 and the lower shell 23 are fixed to each other to form a second metal shell.

[0043] Two projections 2304 are further formed as gap adjustment parts on the main body 230 of the lower shell 23. The projections 2304 prevent the flat connection object 25 from swinging up and down relative to the second insulating housing 21 and the lower shell 23.

[0044] As shown in FIG. 11 , each engaging member 24 includes a retained portion 240 and a U-shaped elastic arm 241. The retained portion 240 has a barb structure. The retained portion 240 is inserted into the receiving hole 2110 by an interference fit. The engaging member 24 is retained within the receiving hole 2110. In this state, a portion of the U-shaped elastic arm 241 is surrounded by the guide post 2111. Another portion of the U-shaped elastic arm 241 is not surrounded by the guide post 2111. The guide post 2111 functions to protect the U-shaped elastic arm 241 and prevent it from being accidentally hit. The U-shaped elastic arm 241 extends in the first direction D1, is movable in the second direction D2, and is configured to be constantly biased toward the engaging position. A rib 242 serving as a second engaging portion is formed on the U-shaped elastic arm 241. When the plug connector 20 is mated with the socket connector 10, the rib 242 (second engagement portion) engages with the stopper portion 1213 (first engagement portion) of the first metal shell, thereby preventing the plug connector 20 from coming off the socket connector 10.

[0045] The flat connection object 25 will be described with reference to FIG. 11. As shown in FIG. 11, the flat connection object 25 includes a head portion 251 and an extension portion 250. A notch 2510 is formed on each side edge of the head portion 251. In this embodiment, the flat connection object 25 is a flexible flat cable (FFC). The extension portion 250 is a cable body. Another head portion is formed at the other end of the cable body. A plurality of electrodes are formed on the bottom surface of the head portion 251 near the insertion end or front edge, and are arranged in the second direction D2. The head portion 251 of the flat connection object 25 is accommodated in a space defined by the second insulating housing 21 and the lower shell 23. These electrodes are exposed through a notch 2301 in the lower shell 23. When the plug connector 20 is mated with the socket connector 10, these electrodes are electrically connected to the contacts 14 of the socket connector 10.

[0046] The first and second restricting portions 2302 and 2303 formed on the main body 230 of the lower shell 23 abut against the front and rear edges of the head 251 of the flat connection object 25, respectively, thereby preventing the flat connection object 25 from moving in the third direction D3 relative to the second insulating housing. The protrusion 2102 abuts against the edge of the notch 2510 of the flat connection object 25, thereby preventing the flat connection object 25 from moving in the second direction D2 relative to the second insulating housing.

[0047] Figure 14 is a plan view of the connector assembly 1 in a locked state. The socket connector 10 is mounted on a circuit board 40. Figure 15 is a cross-sectional view taken along line AA in Figure 14. As shown in Figure 15, the rib 242 serving as the second engagement portion engages with the stopper portion 1213 serving as the first engagement portion. The rib 242 is configured so that the cross section perpendicular to the third direction D3 has a convex arc shape.

[0048] When the plug connector 20 is removed upward from the socket connector 10 in the first direction D1, the shape of the rib 242 is designed so that the interaction between the rib 242 and the stopper portion 1213 urges the U-shaped elastic arm 241 away from the engaged position, thereby enabling the plug connector 20 to be removed from the socket connector 10. Therefore, there is no need to provide a separate operating member for moving the U-shaped elastic arm away from the engaged position.

[0049] The connector of the present invention certainly combines the advantages of thinness and excellent operability. Furthermore, the connector of the present invention is particularly suitable for the limited space of small or thin electronic devices. At the same time, the connector of the present invention is also suitable for automated assembly work of the connector and flat connecting objects.

[0050] Although the present invention has been described with reference to preferred embodiments, those skilled in the art may make various modifications as appropriate within the scope of the present invention. Therefore, the present invention is not limited to the above-described embodiments, but is subject to the scope of the utility model registration claims. In other words, equivalent changes and modifications that do not depart from the scope of the utility model registration claims of the present invention shall remain within the scope of the present invention. [Explanation of symbols]

[0051] 1 Connector Assembly 10-socket connector 11 First insulating housing 110 Flat rectangular body 1101 Contact receiving groove 1102 Guide post hole 1103 Recess 111 Front wall 1110 Notch 112 Rear wall 1121 Contact retention hole 1122 Protrusion 12 First metal shell 120 Connection 1201 Engagement part 1202 Holding part 1203 Alignment hole 121 Shell side 1211 First soldering section 1212 Second soldering section 1213 Stopper part 1214 Holding part 13 Nut material 130 Plate-shaped body 131 Fixed part 1301 Sleeve 14 Contact 141 Connection terminal 142 Holding part 143 Contact Arm 144 Contact part 20 plug connector 21 Second insulating housing 210 Main body 2101 Positioning hole 2102 Protrusion 211 Side 2110 Receiving hole 2111 Guidepost 22 Upper shell 220 Main body 2201 Alignment hole 2202 Positioning tab 221 Lateral extension section 2210 Lock hole 222 Engagement part 23 Lower shell 230 Main body 2301 Notch 2302 First Regulatory Department 2303 Second Regulatory Department 2304 Protrusion 232 Protrusion 24 Engagement member 240 Holding part 241 U-shaped elastic arm 242 Ribs 25 Flat connecting object 250 Stretching section 2510 Notch 251 Head 30 head screws 40 Circuit Board D1 1st direction D2 2nd direction D3 Third direction L1 center axis SP Containment Space

Claims

1. A connector assembly comprising a first connector and a second connector, The first connector is a first insulating housing having an accommodating space, the second connector being inserted into the accommodating space along a first direction and at least a portion of the second connector being accommodated in the accommodating space; a plurality of contacts held by the first insulating housing, arranged along a second direction perpendicular to the first direction, each contact having a contact portion located in the accommodating space and a connection terminal portion located on the opposite side of the contact portion; a first metal shell covering a portion of the first insulating housing and having two first engaging portions formed thereon that face each other in the second direction; at least one nut member connected to the first metal shell and having a threaded hole; The second connector is a second insulating housing; a second metal shell covering a portion of the second insulating housing and having a locking hole corresponding to the at least one nut member formed therein, the locking hole being configured so that a shank of a head screw passes through the locking hole and is screwed into the screw hole of the nut member; two engaging members that are arranged spaced apart from each other in the second direction and are held by the second insulating housing, and have elastic arms that extend in the first direction, and second engaging portions are formed on the elastic arms; A connector assembly, wherein the second engaging portion engages with the first engaging portion when the second connector is mated with the first connector.

2. The second insulating housing has two guide posts formed on a bottom surface thereof and extending in the first direction, 2. The connector assembly according to claim 1, wherein the guide post guides the insertion of the second connector into the receiving space during the process of mating the second connector with the first connector.

3. 3. The connector assembly of claim 2, wherein each of said guide posts has a chamfer formed at an end thereof.

4. 3. The connector assembly according to claim 2, wherein the first insulating housing is formed with two guide post holes into which the two guide posts are inserted.

5. 5. The connector assembly according to claim 1, wherein each of the guide posts surrounds a portion of the resilient arm.

6. 5. The connector assembly according to claim 1, wherein the resilient arm is a U-shaped resilient arm.

7. the second metal shell is composed of an upper shell and a lower shell, the upper shell is disposed above the second insulating housing, the lower shell is disposed below the second insulating housing, The second connector further includes a flat connection object, the flat connection object includes a head portion and a plurality of electrode portions formed on the head portion, the head portion of the flat connecting object is accommodated in a space defined by the second insulating housing and the lower shell, the plurality of electrode portions are exposed from the lower shell, 5. The connector assembly according to claim 1, wherein when the second connector is mated with the first connector, the plurality of electrode portions are electrically connected to the plurality of contacts of the first connector.

8. 5. The connector assembly according to claim 1, wherein the at least one nut member is fixed to the first metal shell by soldering or welding.

9. 5. The connector assembly according to claim 1, wherein the screw hole is disposed so that its central axis is parallel to the first direction.

10. a cross section of the second engagement portion perpendicular to the third direction has a convex arc shape; 5. The connector assembly according to claim 1, wherein the third direction is perpendicular to the first direction and the second direction.

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