Conductive terminal and connector assembly

Abstract

A conductive terminal comprises a plugging part and a clamping part which is formed by extending backwards from the plugging part and used for clamping a cable, and the plugging part comprises a bottom wall, a top wall, two side walls connecting the bottom wall and the top wall and a matching space defined by the bottom wall, the top wall and the side walls. The transverse side of the front end of the top wall bends and extends upwards and then bends and extends downwards to form a limiting convex part, and the tail end of the limiting convex part bends towards the interior of the matching space to form a contact elastic arm. The contact elastic arm comprises a connecting part formed by bending inwards from the tail end of the limiting convex part, a first inclined arm formed by obliquely extending from the connecting part to the rear lower part, a second inclined arm formed by obliquely extending from the first inclined arm to the rear upper part, and a contact part formed at the bending part of the first inclined arm and the second inclined arm. The invention further discloses a connector assembly.

Description

Technical Field

[0001] The present application relates to the field of electrical connection, and in particular to a conductive terminal and a connector assembly. Background Art

[0002] Automotive connectors are required to maintain stable electrical connection performance in bumpy and unstable usage environments. Usually, automotive connectors generally use female terminals with strong elastic arm structures and pin-type male terminals for docking to ensure the stability of the connection.

[0003] For example, Patent Application No. 202322647593.8 of the People's Republic of China discloses a high-current terminal (i.e., female terminal) for automobiles, which includes a plug-in portion that is in electrical contact with the pin terminal of a docking connector and a clamping portion that is connected to a cable; the plug-in portion is formed by winding a sheet to form a mating space for the pin terminal of the docking connector to be inserted, and a contact unit is formed by bending from the bottom wall and the front end of the top wall of the mating space to the mating space. The contact unit includes two groups of symmetrically arranged elastic arm units; the two groups of the elastic arm units include a plurality of terminal elastic arms and anti-deformation protrusions located on the outer side of the deformation of the terminal elastic arms, and the two groups of elastic arm units clamp the pin terminal of the docking connector on both sides of symmetry to maintain stable contact. The female terminal is installed in an insulating body, and the insulating body includes a terminal groove running through the front and back. When the female terminal is inserted into the terminal groove from the back to the front, the female terminal also needs to be snapped into the terminal groove of the insulating body, so that an outer wall is also attached to the top wall of the matching space, and the outer wall is torn to form a locking elastomer extending obliquely upward and backward. The front end of the terminal groove is provided with a locking groove running through the front, and the locking elastomer is locked by elastically snapping into the locking groove to buffer the front and rear plugging and unplugging forces during plugging and unplugging.

[0004] The female terminal is generally made of copper alloy to improve the current carrying capacity, but the elastic force is weak, and the locking elastomer is only a spring sheet formed by tearing a plate and extending obliquely backward. The spring sheet has low strength and can be easily broken when subjected to force, causing the conductive terminal to be easily pulled out. Summary of the invention

[0005] In view of this, it is necessary to provide a conductive terminal and a connector assembly with good locking performance and stable contact.

[0006] In order to solve the above technical problems, the present application provides a conductive terminal, including a plug-in portion and a clamping portion for clamping a cable extending rearward from the plug-in portion, the plug-in portion including a bottom wall, a top wall, two side walls connecting the bottom wall and the top wall, and a matching space surrounded by the bottom wall, the top wall and the side walls, the front end of the top wall is bent upward on one lateral side and then bent downward to form a limiting protrusion, the end of the limiting protrusion is bent toward the matching space to form a contact spring arm, the contact spring arm includes a connecting portion bent inward from the end of the limiting protrusion, a first inclined arm extending obliquely rearward and downward from the connecting portion, a second inclined arm extending obliquely rearward and upward from the first inclined arm, and a contact portion formed at the bending point between the first inclined arm and the second inclined arm.

[0007] Preferably, the limiting protrusion includes a base formed by bending upward from one lateral side of the front end of the top wall, an extension sheet formed by bending and extending from the upper end of the base in the opposite direction, and a bending portion formed at the bending point between the base and the extension sheet.

[0008] Preferably, the extension sheet is divided in the middle longitudinally to form a dividing groove, the connecting portion of the contact elastic arm is formed by bending the extension sheet from the front part of the dividing groove into the matching space, the side wall includes a first side wall and a second side wall, the limiting protrusion is located on one side of the first side wall, and the outer side surface of the extension sheet does not exceed the outer surface of the first side wall.

[0009] Preferably, the top wall includes a first top wall formed by bending from the top end of the first side wall toward the second side wall and a second top wall formed by bending from the top end of the second side wall toward the first side wall, the limiting protrusion is formed on the second top wall, and the rear side of the second side wall is bent inward to form a support arm below the first top wall, and the front end of the support arm extends to above the second inclined arm and abuts against the second inclined arm.

[0010] Preferably, the first side wall and the second side wall are punched inward to form clamping protrusions located on both sides of the contact portion in the lateral direction, and the bottom wall is punched upward below the contact portion to form a lower contact protruding into the matching space.

[0011] Preferably, the second top wall and the top end of the first side wall are riveted together to form a riveted portion, and a locked groove is formed between the plug-in portion and the clamping portion, and the locked groove is a step-like structure formed by cutting away part of the material downward at the rear side of the plug-in portion.

[0012] In order to solve the above-mentioned technical problems, the present application also provides a connector assembly, including the aforementioned conductive terminals and an insulating shell, the insulating shell being formed with a plurality of terminal grooves and positioning grooves located above the terminal grooves through the front and back, the positioning grooves including a through groove through the front and back and a locking elastomer extending on one side of the through groove, the locking elastomer including a main body portion extending in suspension from the through groove, a thickened portion extending forward from the main body portion and gradually widening toward one side of the through groove, and a card groove formed at the front end edge of the thickened portion, the limiting protrusion is inserted into the through groove and squeezes the locking elastomer away from one side of the through groove to deform, and after the limiting protrusion passes over the thickened portion, the thickened portion elastically returns to bear against the rear side of the limiting protrusion to limit the position.

[0013] Preferably, the locking elastomer also includes a front convex portion extending forward from the front end of the thickened portion away from the side of the through slot, and the front convex portion is an inclined surface structure; the slot is located on one side of the front convex portion, and the locking elastomer forms a deformation gap on the side away from the through slot.

[0014] Preferably, a locked groove is formed between the plug-in portion and the clamping portion of the conductive terminal, the insulating shell includes an insulating body and a positioning locking block, the insulating body is cut out to form a locking groove corresponding to the locked groove, the locked groove of the conductive terminal is exposed in the locking groove, the terminal groove includes an upper terminal groove and a lower terminal groove arranged side by side in the vertical direction, and the positioning groove includes an upper positioning groove formed through the upper terminal groove and a lower positioning groove formed between the upper terminal groove and the lower terminal groove.

[0015] Preferably, the positioning locking block includes an upper limit portion inserted into the upper terminal groove, a lower limit portion inserted into the lower terminal groove, a lower insertion groove located below the lower limit portion, and an upper insertion groove located between the lower limit portion and the upper limit portion, and the lower limit portion and the upper limit portion are connected as a whole on both sides laterally; after the positioning locking block is partially inserted into the locking groove, the conductive terminal is inserted into the terminal groove through the lower insertion groove and the upper insertion groove, and then the positioning locking block is pressed downward, and the upper limit portion and the lower limit portion are respectively inserted into the locked grooves of the conductive terminals in the upper terminal groove and the lower terminal groove.

[0016] Preferably, the limiting protrusion includes a base formed by bending upward from one lateral side of the front end of the top wall, an extension sheet formed by bending and extending in the opposite direction from the upper end of the base, and a bending portion formed at the bending point between the base and the extension sheet, and the limiting protrusion is limited on the card slot through the base.

[0017] The conductive terminal of the connector assembly of the present application is formed by bending upward on the top wall of the plug-in portion to form a limiting protrusion protruding on the top wall, and the limiting protrusion is locked on the card slot of the locking elastic body in the positioning groove of the insulating body. Compared with the existing barbed locking springs formed by tearing, the limiting protrusion has better strength and better locking stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Embodiment 1

[0020] Figure 1 A three-dimensional diagram of a conductive terminal according to the first embodiment of the present application;

[0021] Figure 2 A three-dimensional diagram of the conductive terminal of the first embodiment of the present application from another angle;

[0022] Figure 3 For along Figure 1 A cross-sectional view taken along the dashed line AA shown;

[0023] Figure 4 A three-dimensional diagram of a connector assembly according to Embodiment 1 of the present application;

[0024] Figure 5 For along Figure 4 A cross-sectional view of the dashed line BB shown;

[0025] Figure 6 For along Figure 4 A cross-sectional view of the CC dashed line shown;

[0026] Embodiment 2

[0027] Figure 7 A three-dimensional diagram of a conductive terminal according to a second embodiment of the present application;

[0028] Figure 8 A three-dimensional diagram of the conductive terminal of the second embodiment of the present application from another angle;

[0029] Fig. 9 For along Figure 7 A cross-sectional view taken along the dashed line DD is shown.

[0030] Description of Reference Numerals

[0031] Conductive terminal-10; plug-in portion-11; bottom wall-111; side wall-112; first side wall-1121; second side wall-1122; clamping protrusion-1123; riveting portion-1124; top wall-113; rear top wall-1131; front top wall-1132; matching space-S; clamping portion-12; core wire clamping portion-121; outer layer clamping portion-122; contact spring arm-13; first inclined arm-131; contact portion-132; second inclined arm-133; lower contact-134; connecting portion-135; locked groove-14; supporting arm-15; limiting protrusion-16; base-161; bending portion-162; extension sheet-163; separation groove-1 64; reinforcing ribs-165; reinforcing sheet-166; insulating shell-30; insulating body-31; positioning lock block-32; terminal slot-33; front plug-in port-332; limiting front wall-333; positioning slot-34; through slot-341; locking elastic body-342; main body-343; thickened portion-344; card slot-345; front convex portion-346; deformation gap-347; locking slot-36; positioning lock block-32; upper limit portion-321; lower limit portion-322; upper insertion slot-323; lower insertion slot-324; first thin wall-325; locking portion-327; upper terminal slot-301; lower terminal slot-302; upper positioning slot 303; lower positioning slot-304. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution of this application will be clearly and completely described below in combination with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0033] This application is Figure 1 The X direction is the front of the front-back direction, the Y direction is the lateral direction, and the Z direction is the upward direction of the vertical direction.

[0034] Embodiment 1

[0035] See also Figures 1 to 3 As shown, the conductive terminal 10 of the first embodiment of the present application includes a plug-in portion 11 located at the front end, a clamping portion 12 extending backward from the plug-in portion 11, and a locked groove 14 formed between the plug-in portion 11 and the clamping portion 12. The plug-in portion 11 includes a bottom wall 111, a top wall 113 located above the bottom wall 111, two side walls 112 connecting the bottom wall 111 and the top wall 113, and a matching space S surrounded by the bottom wall 111, the top wall 113, and the two side walls 112.

[0036] The side wall 112 includes a first side wall 1121 and a second side wall 1122, and the first side wall 1121 and the second side wall 1122 are both punched toward the mating space S to form a clamping protrusion 1123 that protrudes into the mating space S. The top wall 113 includes a first top wall 1131 formed by folding from the top end of the first side wall 1121 and a second top wall 1132 formed by folding from the top end of the second side wall 1122. The first side wall 1121 is provided with a rivet portion 1124 at the top end of one side of the second top wall 1132 to be riveted together with the second top wall 1132.

[0037] The front end portion of the second top wall 1132 is torn and bent upward to form a limiting protrusion 16 and a contact elastic arm 13 extending from the limiting protrusion 16 to the matching space S. The limiting protrusion 16 includes a base 161 formed by bending upward from one side of the second top wall 1132, an extension sheet 163 formed by bending reversely from the top of the base 161, and a bending portion 162 formed at the bending. The limiting protrusion 16 extends upward beyond the surface of the top wall 113 and is located on one lateral side of the plug-in portion 11. The middle of the extension sheet 163 is torn to form a separation groove 164, and the bottom of the extension sheet 163 located in front of the separation groove 164 is bent inward to form a contact elastic arm 13 extending into the matching space S.

[0038] The contact spring arm 13 includes a connecting portion 135 bent from the extension sheet 163 to the matching space S, a first inclined arm 131 bent and extended obliquely from the connecting portion 135 to the rear and lower side, a second inclined arm 133 bent and extended obliquely from the end of the first inclined arm 131 to the rear and upper side, and a contact portion 132 formed at the bend between the first inclined arm 131 and the second inclined arm 133. The rear side of the second side wall 1122 is folded inward to form a support arm 15 located at the lower side of the first top wall 1131, and the support arm 15 extends to the upper side of the second inclined arm 133 of the contact spring arm 13 and is used to resist the second inclined arm 133. The bottom wall 111 is stamped inwardly to form a lower contact 134 corresponding to the lower side of the contact portion 132. The lower contact 134 preferably includes two front and rear contacts. The contact portion 132 is located within the two lower contacts, that is, the contact portion 132 can vary within the range from above the first lower contact 134 to above the second lower contact 134.

[0039] In one embodiment, the support arm 15 may be eliminated, and the second inclined arm 133 of the contact elastic arm 13 may continue to extend backward and upward and abut against the top wall 113 .

[0040] The clamping portion 12 includes a core clamping portion 121 extending backward from the bottom wall 111 and the side wall 112 of the plug-in portion 11, an outer cladding clamping portion 122 extending backward from the core clamping portion 121, and the locked groove 14 formed between the core clamping portion 121 and the plug-in portion 11. The locked groove 14 is a step-like structure formed by cutting off part of the material at the rear side of the plug-in portion 11, and the conductive terminal 10 can be locked by being inserted into the step-like structure. The core clamping portion 121 and the outer cladding clamping portion 122 are prior art and will not be described in detail here.

[0041] The conductive terminal 10 of the present application is formed by bending and extending upward at the front end of the top wall 113 of the plug-in portion 11 to form a limiting protrusion 16, and then extending through the limiting protrusion 16 to form a contact spring arm in the matching space S. Compared with the tearing barb-like structure used in the prior art to lock the conductive terminal 10, the limiting protrusion 16 has a more stable and reliable structure.

[0042] Please continue reading Figures 4 to 6 As shown, the connector assembly of the present application includes an insulating housing 30 and a plurality of conductive terminals 10 inserted into the insulating housing 30. The insulating housing 30 includes an insulating body 31 having a plurality of terminal slots 33 and positioning slots 34 formed therethrough from front to back, and a positioning lock block 32 inserted into the insulating body 31 to lock the conductive terminals A.

[0043] The insulating body 31 is formed with a plurality of terminal slots 33 and positioning slots 34 in the front-to-back direction. The terminal slots 33 are arranged in two rows in the vertical direction, namely, a group of upper terminal slots 301 and a group of lower terminal slots 302. The upper terminal slots 301 and the lower terminal slots 302 are arranged one by one. The front end of the terminal slot 33 is provided with a front plug opening 332 for inserting the pin of the docking connector, and a limiting front wall 333 is formed at the periphery of the front plug opening 332 of the terminal slot 33 to block part of the terminal slot 33. The conductive terminal 10 is inserted into the terminal slot 33 from the rear of the terminal slot 33, and the front edge of the plug-in portion 11 is limited to the rear side of the limiting front wall 333.

[0044] A group of positioning grooves 34 is formed correspondingly above each group of terminal grooves 33. Figure 5As shown, the positioning groove 34 includes a through groove 341 formed by passing through from front to back, and a locking elastic body 342 formed by extending forward from the inner wall surface of the through groove 341. The locking elastic body 342 includes a main body 343 extending forward in a suspended state, a thickened portion 344 gradually widening from the main body 343 toward the side of the through groove 341, a clamping groove 345 formed at the front end of the thickened portion 344 close to the side of the through groove 341, and a front protrusion 346 extending forward from the side of the thickened portion 344 away from the through groove 341. The main body 343 to the thickened portion 344 toward the side of the through groove 341 is a smooth arc surface so that the limiting protrusion 16 can pass through to the front of the positioning groove 34 without restriction. The front protrusion 346 is designed as an inclined structure near the side of the through groove 341, and a deformation gap 347 is formed between the locking elastic body 342 and the side wall away from the through groove 341.

[0045] The conductive terminal 10 is inserted into the terminal slot 33 from the rear of the insulating body 31, and the plug-in portion 11 is inserted forward into the terminal slot 33. The limiting protrusion 16 is inserted from the through slot 341 of the positioning slot 34 and presses the locking elastic body 342 and passes over the locking elastic body 342 and finally partially snaps into the slot 345 to limit the conductive terminal 10 from falling backward. When the conductive terminal 10 is to be removed, a specific tool can be inserted from the front end of the positioning slot 34 and press the locking elastic body 342 to one side so that the locking elastic body 342 is deformed toward the side away from the through slot 341, so that the limiting protrusion 16 is freed from the restriction of the slot 345 and the conductive terminal 10 is removed smoothly.

[0046] The top surface of the insulating body 31 is provided with a locking groove 36 for inserting the positioning locking block 32 downwardly, and the locked groove 14 of the conductive terminal 10 is exposed in the locking groove 36. The locking groove 36 passes through the upper terminal groove 301 and the lower terminal groove 302. The positioning locking block 32 includes a lower limiting portion 322 inserted into the lower terminal groove 302, an upper limiting portion 321 connected to the lower limiting portion 322 at both sides and inserted into the upper terminal groove 301, a lower insertion groove 324 formed below the lower limiting portion 322, and an upper insertion groove 324 formed between the lower limiting portion 322 and the upper limiting portion 321. The upper limiting portion 321 and the lower limiting portion 322 gradually become thinner from front to back, including a first thin wall 325 located at the rear end and a locking portion 327 located at the front end, and the bottom surface of the first thin wall 325 is higher than the bottom surface of the locking portion 327. Furthermore, the junction between the first thin wall 325 and the locking portion 327 is a smooth inclined surface structure.

[0047] The clamping portion 12 of the conductive terminal 10 of the present application is inserted into the terminal slot 33 after being riveted to the cable. Specifically, the core clamping portion 121 of the clamping portion 12 is riveted to fix the core of the cable and conduct it, and the outer sheath clamping portion 122 is riveted to fix the outer sheath of the cable. This is a conventional technology and will not be described in detail here.

[0048] First, partially insert the positioning lock block 32 into the lock groove 36. When the conductive terminal 10 is inserted into the terminal groove 33 from the rear end, the plug-in portion 11 can be inserted under the first thin wall 325 without hindrance. Continue to push forward and lift the positioning lock block 32 upward. After continuing to push forward, the plug-in portion 11 will eventually lift the locking portion 327 and finally pass over the front end of the locking portion 327.

[0049] Of course, in one embodiment, the insertion of the positioning lock block 32 is divided into two stages. In the unlocked state, a first-order blocking position is set, that is, the upper limit portion 321 and the lower limit portion 322 avoid the upper terminal groove 301 and the lower terminal groove 302. After the conductive terminal 10 is inserted into the upper terminal groove 301 and the lower terminal groove 302, the positioning lock block 32 is completely inserted into the locking groove 36. At this time, the locking portion 327 of the upper limit portion 321 and the lower limit portion are inserted into the locked groove 14 of the conductive terminal 10 to secondarily lock the conductive terminal 10.

[0050] The plug pin of the docking connector is inserted from the front socket 332 at the front end of the insulating shell 30 , and the upper and lower sides of the plug pin are clamped and connected by the contact portion 132 of the contact spring arm 13 and the lower contact 134 , while the lateral sides of the plug pin are limited by the clamping protrusions 1123 on the side wall 112 .

[0051] Embodiment 2

[0052] Please continue reading Figures 7 to 9 As shown, compared with the conductive terminal of the first embodiment, the conductive terminal 10 of the second embodiment is different in that:

[0053] The limiting protrusion 16 is formed by reverse bending from the front end of the second top wall 1132, and the contact elastic arm 13 is formed by bending from the front side of one of the side walls 112 to extend into the matching space S. Specifically, the limiting protrusion 16 includes a base 161 formed by reverse bending from the lateral side of the front end of the second top wall 1132, a bending portion 162 formed at the bending point between the base 161 and the second top wall 1132, and an extension sheet 163 formed by bending upward from the lateral side of the base 161. In order to strengthen the strength of the limiting protrusion 16, a reinforcing rib 165 protruding outward is stamped and formed at the bending point between the extension sheet 163 and the base 161, and the number of the reinforcing ribs 165 is not less than two. The rear end of the lateral outer side of the base 161 of the limiting protrusion 16 is bent downward to form a reinforcing sheet 166 that abuts against the rear side wall 112 or the top wall 113.

[0054] The contact elastic arm 13 is formed by bending from the front end of the first side wall 1121 into the matching space S and then extending backward. The contact elastic arm 13 includes a connecting portion 135 formed by bending from the first side wall 112 into the matching space S, a first inclined arm 131 extending backward and downward from the connecting portion 135, a second inclined arm 133 formed by bending from the first inclined arm 131 and extending obliquely backward and upward, and a contact portion 132 formed at the bending point between the first inclined arm 131 and the second inclined arm 133. The end of the second inclined arm 133 is folded to form a supporting end portion 136 supported on the top wall 113, and the supporting end portion 136 abuts against the top wall 113 to provide elastic force for the contact portion 132. The connecting portion 135 abuts against the front end of the reinforcing sheet 166 to strengthen the strength of the limiting protrusion 16.

[0055] The insulating body 31 and the positioning lock block 32 of the insulating housing 30 are basically the same as those of the first embodiment. When the pin of the docking connector is inserted into the mating space S, the lower surface of the pin is abutted against the lower contact 134, the upper surface of the pin is abutted under the contact portion 132 of the contact spring arm 13, and the support end 136 abuts against the top wall 113 to provide elastic force. The lateral sides of the pin are abutted or connected by the clamping protrusions 1123 on the side wall 112.

[0056] The top wall 113 in the second embodiment is entirely bent from the second side wall 1122 , and the top wall 113 is bent downward at one side of the first side wall 1121 and riveted to the first side wall 1121 to form a riveted portion 1124 .

[0057] The conductive terminal 10 of the connector assembly of the present application is formed by bending upward on the top wall 113 of the plug-in portion 11 to form a limiting protrusion 16 protruding from the top wall 113, and the limiting protrusion 16 is locked on the locking groove 345 of the locking elastic body 342 in the positioning groove 34 of the insulating body 31. Compared with the existing barbed locking springs formed by tearing, the limiting protrusion 16 has better strength and better locking stability.

[0058] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A conductive terminal, comprising a plug-in portion and a clamping portion extending backward from the plug-in portion for clamping a cable, wherein the plug-in portion comprises a bottom wall, a top wall, two side walls connecting the bottom wall and the top wall, and a mating space surrounded by the bottom wall, the top wall and the side walls, characterized in that: The lateral side of the front end of the top wall is bent upward and extended, and then bent downward to form a limiting protrusion, and the end of the limiting protrusion is bent toward the matching space to form a contact spring arm, and the contact spring arm includes a connecting portion formed by bending inward from the end of the limiting protrusion, a first inclined arm extending obliquely rearward and downward from the connecting portion, a second inclined arm extending obliquely rearward and upward from the first inclined arm, and a contact portion formed at the bending point of the first inclined arm and the second inclined arm.

2. The conductive terminal according to claim 1, characterized in that: The limiting protrusion includes a base portion formed by bending upward from one lateral side of the front end of the top wall, an extension sheet formed by bending and extending from the upper end of the base portion in the opposite direction, and a bending portion formed at the bending point between the base portion and the extension sheet.

3. The conductive terminal according to claim 2, characterized in that: The extension sheet is divided in the middle of the longitudinal direction to form a dividing groove, and the connecting portion of the contact elastic arm is formed by bending the extension sheet from the front part of the dividing groove into the matching space, and the side wall includes a first side wall and a second side wall, and the limiting protrusion is located on one side of the first side wall, and the outer side surface of the extension sheet does not exceed the outer surface of the first side wall.

4. The conductive terminal according to claim 3, characterized in that: The top wall includes a first top wall formed by bending from the top end of the first side wall toward the second side wall and a second top wall formed by bending from the top end of the second side wall toward the first side wall. The limiting protrusion is formed on the second top wall. The rear side of the second side wall is bent inward to form a support arm below the first top wall. The front end of the support arm extends to above the second inclined arm and abuts against the second inclined arm.

5. The conductive terminal according to claim 4, characterized in that: The first side wall and the second side wall are punched inward to form clamping protrusions located on both sides of the contact portion in a lateral direction, and the bottom wall is punched upward below the contact portion to form a lower contact protruding into the matching space.

6. The conductive terminal according to claim 4, characterized in that: The second top wall is riveted together with the top end of the first side wall to form a riveted portion, and a locked groove is formed between the plug-in portion and the clamping portion. The locked groove is a step-like structure formed by cutting away part of the material downward at the rear side of the plug-in portion.

7. A connector assembly, characterized in that: It comprises a plurality of conductive terminals and an insulating shell as described in claim 1, wherein the insulating shell is penetrated from front to back to form a plurality of terminal grooves and positioning grooves located above the terminal grooves, the positioning grooves comprise a through groove that penetrates from front to back and a locking elastic body extending from one side of the through groove, the locking elastic body comprises a main body portion that is suspended and extends from the through groove, a thickened portion that extends forward from the main body portion and gradually widens toward one side of the through groove, and a slot formed at the front end edge of the thickened portion, the limiting protrusion is inserted into the through groove and squeezes the locking elastic body away from one side of the through groove to deform, and after the limiting protrusion passes over the thickened portion, the thickened portion elastically returns to press against the rear side of the limiting protrusion to limit the position.

8. The connector assembly according to claim 7, wherein: The locking elastomer also includes a front convex portion extending forward from the front end of the thickened portion away from the side of the through slot, and the front convex portion is an inclined surface structure; the slot is located on one side of the front convex portion, and the locking elastomer forms a deformation gap on the side away from the through slot.

9. The connector assembly according to claim 8, wherein: A locked groove is formed between the plug-in portion and the clamping portion of the conductive terminal, the insulating shell includes an insulating body and a positioning locking block, the insulating body is cut out to form a locking groove corresponding to the locked groove, the locked groove of the conductive terminal is exposed in the locking groove, the terminal groove includes an upper terminal groove and a lower terminal groove arranged side by side in a vertical direction, and the positioning groove includes an upper positioning groove formed through the upper terminal groove and a lower positioning groove formed between the upper terminal groove and the lower terminal groove.

10. The connector assembly according to claim 9, wherein: The positioning locking block includes an upper limit portion inserted into the upper terminal groove, a lower limit portion inserted into the lower terminal groove, a lower insertion groove located below the lower limit portion, and an upper insertion groove located between the lower limit portion and the upper limit portion, and the lower limit portion and the upper limit portion are connected as a whole on both sides of the horizontal direction; after the positioning locking block is partially inserted into the locking groove, the conductive terminal is inserted into the terminal groove through the lower insertion groove and the upper insertion groove, and then the positioning locking block is pressed downward, and the upper limit portion and the lower limit portion are respectively inserted into the locked grooves of the conductive terminals in the upper terminal groove and the lower terminal groove.

11. The connector assembly according to claim 10, wherein: The limiting protrusion includes a base formed by bending upward from one lateral side of the front end of the top wall, an extension sheet formed by bending and extending from the upper end of the base in the opposite direction, and a bending portion formed at the bending point between the base and the extension sheet, and the limiting protrusion is limited on the card slot through the base.

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