Terminal assembly and connector assembly

Abstract

A terminal assembly comprises a conductive terminal and an outer frame, and the conductive terminal comprises a plugging part and a clamping part which is formed by extending backwards from the plugging part and is used for clamping a cable. The plugging part comprises a bottom wall, a top wall, two side walls connecting the bottom wall and the top wall, a matching space defined by the bottom wall, the top wall and the side walls, and a contact elastic arm which tears the plugging part and extends into the matching space. The outer frame comprises an outer frame body and a pair of outer frame side portions, wherein the outer frame body is fixed outside the inserting portion, the outer frame side portions are bent downwards from the two transverse sides of the outer frame body, and the outer frame side portions are torn towards the transverse outer side to form lock catch elastic arms. The utility model further discloses a connector assembly.

Description

Technical Field

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

[0002] Automotive connectors are required to maintain stable electrical connection performance even in bumpy and unstable operating environments. Typically, automotive connectors use female terminals with a strong elastic arm structure and male terminals with pins to ensure connection stability.

[0003] For example, Patent Application No. 202322647593.8 of the People's Republic of China discloses a high-current terminal (i.e., a female terminal) for use in vehicles. The terminal comprises a plug-in portion that electrically contacts the pin terminal of a mating connector and a clamping portion that connects to a cable. The plug-in portion is formed by winding a sheet material to form a mating space for the pin terminal of the mating connector to be inserted into, 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 extend into the mating space. The contact unit comprises two symmetrically arranged sets of elastic arm units. The two sets of elastic arm units include a plurality of terminal elastic arms and anti-deformation protrusions located on the outer sides of the deformed terminal elastic arms. The two sets of elastic arm units clamp the pin terminal of the mating connector on both sides of the symmetrical sides to maintain stable contact. The female terminal is installed in the insulating body, and the insulating body includes a terminal slot that passes through the front and back. When the female terminal is inserted into the terminal slot from the back to the front, the female terminal needs to be snapped into the terminal slot of the insulating body. In this way, an outer wall is also attached to the top wall of the matching space. The outer wall is torn to form a locking spring piece extending obliquely to the rear and upward. A locking groove that passes through the front is provided at the front end of the terminal slot. The locking spring piece is elastically snapped into the locking groove and locked 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 top wall and the outer wall of the matching space are riveted together. When the number of plug-ins is large, mechanical deformation may occur, affecting the locking performance of the female terminal. Utility Model Content

[0005] In view of this, it is necessary to provide a terminal assembly 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 terminal assembly, including a conductive terminal and an outer frame, the conductive terminal including a plug-in portion and a clamping portion extending backward from the plug-in portion for clamping the cable, 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 top wall is torn and extended backward and downward to form a contact elastic arm protruding into the matching space, the bottom wall protrudes upward to form a lower contact located below the contact elastic arm, the outer frame includes an outer frame main body fixed outside the plug-in portion and a pair of outer frame side portions bent downward from the lateral sides of the outer frame main body, and the outer frame side portions are torn toward the lateral outside to form a locking elastic arm.

[0007] Preferably, the conductive terminal is made of copper alloy material, and the outer frame is made of stainless steel; a locking groove is formed between the plug-in portion and the clamping portion.

[0008] Preferably, windows are cut out from the transverse outer edges of the side walls and the top wall, and the rear end of the top wall extends forward and downward to form a support arm that is crimped to the upper side of the end of the contact elastic arm. The contact elastic arm includes a first inclined arm extending backward from the front end of the top wall to the matching space, a second inclined arm extending obliquely backward and upward from the first inclined arm, and a contact portion formed at the bend of the first inclined arm and the second inclined arm.

[0009] Preferably, the support arm includes a first support elastic arm extending obliquely forward and downward from the rear end of the top wall, a second support elastic arm extending obliquely forward and upward from the first support elastic arm, and a support end portion formed by bending downward and extending from the second support elastic arm and resting on the upper side of the second inclined arm of the contact elastic arm.

[0010] Preferably, the outer frame is punched upward at the position corresponding to the support arm to form an avoidance groove for avoiding the support arm, and the avoidance groove provides space for the elastic deformation of the support arm; the lower contacts are formed with two protruding into the matching space in the front-to-back direction, and the contact part of the contact elastic arm is directly above the two lower contacts.

[0011] Preferably, the locking spring arm on the side of the outer frame includes an inclined portion formed by tearing the side of the outer frame and extending outward and rearward, and a supporting end portion formed by bending from the end of the inclined portion and extending longitudinally.

[0012] In order to solve the above technical problems, the present application also provides a connector assembly, including an insulating shell provided with a plurality of terminal slots and a plurality of terminal assemblies inserted in the terminal slots, the terminal slots passing through the insulating shell front to back, and a snap groove passing through the front surface of the insulating shell is provided on the outside of the terminal slots, the terminal assembly includes a conductive terminal and an outer frame, the conductive terminal includes a plug-in portion and a clamping portion extending backward from the plug-in portion for clamping the cable, the plug-in portion includes a bottom wall, a top wall, two side walls connecting the bottom wall and the top wall, a mating space surrounded by the bottom wall, the top wall and the side walls, and a contact spring arm that tears the plug-in portion and extends into the mating space, the outer frame includes an outer frame main body fixed outside the plug-in portion and a pair of outer frame side portions bent downward from the lateral sides of the outer frame main body, the outer frame side portions are torn toward the lateral outside to form a locking spring arm that is clamped in the snap groove.

[0013] Preferably, the top wall is torn and extends backward and downward to form a contact spring arm protruding into the matching space, the bottom wall protrudes upward to form a lower contact located below the contact spring arm, the side walls and the transverse outer edges of the top wall are cut out to form a window, and the rear end of the top wall extends forward and downward to form a support arm crimped onto the upper side of the end of the contact spring arm, the contact spring arm includes a first inclined arm extending backward from the front end of the top wall to the matching space, a second inclined arm extending obliquely backward and upward from the first inclined arm, and a contact portion formed at the bending of the first inclined arm and the second inclined arm; the support arm includes a first support spring arm extending obliquely forward and downward from the rear end of the top wall, a second support spring arm extending obliquely forward and upward from the first support spring arm, and a support end portion formed by bending downward and extending from the second support spring arm to support the upper side of the second inclined arm of the contact spring arm.

[0014] Preferably, a locked groove is formed between the plug-in portion and the clamping portion, 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 terminal assembly is exposed in the locking groove, the terminal groove is formed by passing through the insulating body front to back, the terminal groove includes an upper terminal groove and a lower terminal groove side by side in the vertical direction, and the terminal assembly is inserted in both the lower terminal groove and the upper 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 of the horizontal direction; after the terminal assembly is inserted into the terminal groove through the lower insertion groove and the upper insertion groove, 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 terminal assembly in the upper terminal groove and the lower terminal groove.

[0016] Preferably, the thickness of the upper limit portion gradually becomes thinner from front to back, and the upper limit portion includes a first thin wall, a second thin wall and a locking portion in sequence from back to front. Smooth inclined surfaces are set between the first thin wall and the second thin wall, and between the second thin wall and the locking portion. The first thin wall does not protrude into the terminal slot when the positioning locking block is fully inserted into the locking slot.

[0017] The terminal assembly and connector assembly of the present application wrap and fix the outer frame outside the plug-in part of the conductive terminal, so that the strength and stability of the plug-in part can be enhanced by the outer frame, while ensuring that the locking spring arm has good locking performance. 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] Example 1

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

[0021] Figure 2 This is a three-dimensional exploded view of the terminal assembly of Example 1 of the present application;

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

[0023] Figure 4 A perspective view of a connector assembly according to a first embodiment of the present application;

[0024] Figure 5 A top view of the connector assembly according to the first embodiment of the present application;

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

[0026] Figure 7 For the Figure 5 A partial view of the cross-sectional view taken along the dashed line CC shown;

[0027] Figure 8 For the Figure 4 The cross-sectional view along the dashed line DD is shown, with the locking element not locked in place;

[0028] Figure 9 For the Figure 4 A cross-sectional view taken along the dashed line DD shown;

[0029] Example 2

[0030] Figure 10 This is a three-dimensional diagram of the terminal assembly of the second embodiment of the present application;

[0031] Figure 11 This is a three-dimensional exploded view of the terminal assembly of the second embodiment of the present application;

[0032] Figure 12 For the Figure 10 A cross-sectional view of the dashed line EE shown;

[0033] Figure 13 This is a cross-sectional view of the terminal assembly of the second embodiment of the present application after being installed in the insulating body.

[0034] Description of Reference Numerals

[0035] Terminal assembly-A; conductive terminal-10; plug-in portion-11; bottom wall-111; top wall-113; side wall-112; window-114; mating 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; locked groove-14; support arm-15; first support spring arm-151; second support spring arm-152; support end portion-153; outer frame-20; outer frame body-21; avoidance groove- 211; welding portion 212; outer frame side 22; locking spring arm 23; inclined portion 231; abutting end 232; widened support portion 24; insulating shell 30; insulating body 31; terminal slot 311; front insertion port 312; limiting front wall 313; snap slot 314; snap step 315; limiting slot 316; positioning lock block 32; upper limiting portion 321; lower limiting portion 322; upper insertion slot 323; lower insertion slot 324; first thin wall 325; second thin wall 326; locking portion 327; pin P. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions and advantages of this application more clear, the technical solutions of this application will be described clearly and completely below in conjunction 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.

[0037] This application is based on 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 vertical direction.

[0038] Example 1

[0039] See also Figures 1 to 3 As shown, the terminal assembly A of the first embodiment of the present application includes a conductive terminal 10 and an outer frame 20 fixed to the outside of the conductive terminal 10 .

[0040] The conductive terminal 10 includes a pin P (such as Figure 5 The connecting portion 11 (shown) is connected to the connecting portion 11 and the clamping portion 12 extends rearward from the connecting portion 11. The connecting portion 11 is formed into a rectangular parallelepiped structure by bending and rolling a metal plate. The connecting 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 mating space S enclosed by the bottom wall 111, the top wall 113, and the two side walls 112. The rolled metal plate is joined together at the top wall 113 to form a joint.

[0041] A window 114 is defined in the center of the side wall 112. A pair of spring contact arms 13 are formed rearwardly extending from the side wall 112 in front of the window 114. The spring contact arms 13 include a first inclined arm 131 extending rearwardly from the side wall 112 and toward the mating space S, a second inclined arm 133 bent outwardly from the first inclined arm 131 and then extending rearwardly, and a contact portion 132 formed at the bend between the first and second inclined arms 131, 133, and located within the mating space S. A gap exists between the distal end of the second inclined arm 133 and the rear side wall 112. The end of the second inclined arm 133 extends to a position where it at least partially overlaps with the longitudinal projection of the side wall 112, and the outer side of the second inclined arm 133 does not extend beyond the outer surface of the side wall 112.

[0042] The clamping portion 12 includes a core clamping portion 121 extending rearward from the bottom wall 111 and side walls 112 of the plug-in portion 11, an outer cladding clamping portion 122 extending rearward from the core clamping portion 121, and a latching slot 14 formed between the core clamping portion 121 and the plug-in portion 11. The latching slot 14 is a stepped structure formed by cutting away material from the rear side of the plug-in portion 11, and the conductive terminal 10 is locked by snapping into the stepped structure. The core clamping portion 121 and the outer cladding clamping portion 122 are conventional and will not be described in detail here.

[0043] The outer frame 20 includes an outer frame body 21 attached to the top wall 113 of the plug-in portion 11, outer frame side portions 22 bent downward from both lateral sides of the outer frame body 21 and attached to the outer surface of the side wall 112, and a locking spring arm 23 formed by extending outward and rearward after tearing one of the outer frame side portions 22.

[0044] After the surface of the outer frame body 21 is attached to the top wall 113, the outer frame body 21 is welded and fixed to the top wall 113 by spot welding to form a welding portion 212. During spot welding, the welding portion 212 is welded to the joint seam of the top wall 113. While the outer frame 20 is fixed to the plug-in portion 11, the joint seam of the plug-in portion 11 is welded and fixed to provide better stability. The locking spring arm 23 includes an inclined portion 231 formed by extending obliquely outward and rearward after the outer frame side portion 22 is torn, and a supporting end portion 232 formed by bending inward from the end of the inclined portion 231. The supporting end portion 232 is located on the lateral outside of the outer frame side portion 22, and the supporting end portion 232 remains parallel to the outer frame side portion 22.

[0045] The conductive terminals 10 of the terminal assembly A are made of a copper alloy with low resistivity and good elasticity. The outer frame 20 can be made of the same copper alloy as the conductive terminals 10, or it can be made of stainless steel, which offers greater elasticity, higher strength, and lower cost. Because the outer frame 20 serves only as a reinforcement and fastener, and does not participate in the transmission of electrical energy, it does not require high resistivity and is preferably made of stainless steel.

[0046] The terminal assembly A of the present application wraps and fixes the outer frame 20 outside the plug-in portion 11 of the conductive terminal 10, and the outer frame 20 can enhance the strength and stability of the plug-in portion 11, while ensuring that the locking spring arm 23 has good locking performance.

[0047] Please continue reading Figures 4 to 9As shown, the connector assembly of the present application includes an insulating housing 30 and a plurality of terminal assemblies A inserted into the insulating housing 30. The insulating housing 30 includes an insulating body 31 having a plurality of terminal slots 311 formed therethrough and a positioning lock block 32 inserted into the insulating body 31 to lock the terminal assemblies A.

[0048] The insulating body 31 is formed with a plurality of terminal slots 311 extending through it in the front-to-back direction. The terminal slots 311 are arranged in two vertical rows, 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 in a one-to-one correspondence. The front end of the terminal slot 311 is provided with a front socket 312 for inserting the pins P of the mating connector. A limiting front wall 313 is formed around the periphery of the front socket 312 of the terminal slot 311 to partially block the terminal slot 311. The terminal assembly A is inserted into the terminal slot 311 from the rear, and the front edge of the plug-in portion 11 is limited to the rear side of the limiting front wall 313. A snap-fit ​​slot 314 is formed on the lateral outer side of the terminal slot 311, extending through the front of the insulating body 31. The snap-fit ​​slot 314 is connected to the terminal slot 311 and is located on the lateral outer side of the front portion of the terminal slot 311. A locking step 315 is formed at the rear end of the locking groove 314 .

[0049] One lateral side of the bottom wall of the terminal slot 311 is recessed downward to form a limiting slot 316, and one of the outer frame side portions 22 of the outer frame 20 extends downward to form a widened support portion 24 extending beyond the bottom wall 111. The widened support portion 24 is inserted into the limiting slot 316 to position the plug-in portion 11 to prevent the plug-in portion 11 from shaking in the terminal slot 311.

[0050] The top surface of the insulating body 31 is provided with a locking groove 33 for inserting the positioning locking block 32. The locking groove 14 of the terminal assembly A is exposed in the locking groove 33. The locking groove 33 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 integrally connected to the lower limiting portion 322 on 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 limit portion 321 gradually becomes thinner from front to back and includes a first thin wall 325 at the rear end, a second thin wall 326 in the middle, and a locking portion 327 at the front end. The bottom surface of the first thin wall 325 is higher than the bottom surface of the second thin wall 326, and the bottom surface of the second thin wall 326 is higher than the bottom surface of the locking portion 327. The junctions between the first thin wall 325 and the second thin wall 326, and between the second thin wall 326 and the locking portion 327, are both smooth, inclined structures. When the positioning lock block 32 is fully inserted into the locking slot 33, the bottom surface of the first thin wall 325 is no higher than the upper side surface of the inner wall of the terminal slot 311. The thickness of the lower limit portion 322 is less than that of the upper limit portion 321, being thinner at the rear end and thicker at the front end.

[0051] The clamping portion 12 of the terminal assembly A of the present application is inserted into the terminal slot 311 after riveting 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.

[0052] First, insert the positioning lock block 32 into the locking groove 33. When the terminal assembly A is inserted into the terminal groove 311 from the rear end, several terminal assemblies A are first inserted into the upper terminal groove 301. When the plug-in portion 11 and its outer frame 20 are inserted into the locking groove 33, the plug-in portion 11 and its outer frame 20 can be inserted into the first thin wall 325 without hindrance. Continue pushing and lift the positioning lock block 32 upward. After further pushing, the plug-in portion 11 and its outer frame 20 will eventually lift below the bottom surface of the locking portion 327. Then, insert several terminal assemblies A into the lower terminal groove 302. At this time, the lower limit portion 322 has been lifted between the partitions between the upper terminal groove 301 and the lower terminal groove 302, allowing the terminal assemblies A to be smoothly inserted into the lower terminal groove 302.

[0053] Of course, in one embodiment, the insertion of the positioning lock block 32 can also be 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 terminal assembly A 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 33. At this time, the locking portion 327 of the upper limit portion 321 and the lower limit portion 322 are inserted into the locked groove 14 of the terminal assembly A to lock the terminal assembly A for a second time.

[0054] The pin P of the docking connector is inserted from the front socket 312 at the front end of the insulating shell 30, and the two lateral sides of the pin P are clamped and connected by the contact spring arms 13. Specifically, a pair of contact portions 132 of the contact spring arms 13 clamp the two lateral sides of the pin P.

[0055] Example 2

[0056] Please continue reading Figures 10 to 13 As shown, compared with the terminal assembly of the first embodiment, the terminal assembly A of the second embodiment is different in that:

[0057] Instead of providing the contact spring arm 13 on the side wall 112, the contact spring arm 13 is formed by extending rearward and downward from the front end of the top wall 113 of the plug-in portion 11 into the mating space S. A support arm 15 extends forward and downward from the rear end of the top wall 113 of the plug-in portion 11 to the upper side of the contact spring arm 13. The contact spring arm 13 includes a first inclined arm 131 extending obliquely rearward and downward from the front end of the top wall 113, a second inclined arm 133 bent obliquely rearward and upward from the first inclined arm 131, and a contact portion 132 formed at the bend. A lower contact 134 is stamped upwardly and formed on the bottom wall 111 at the location of the contact portion 132. A pair of lower contacts 134 are stamped in the front-to-back direction, with the contact portion 132 positioned directly above and between the pair of lower contacts 134. The support arm 15 includes a first support elastic arm 151 extending obliquely forward and downward from the rear end of the top wall 113, a second support elastic arm 152 extending obliquely forward and upward from the first support elastic arm 151, and a support end portion 153 extending downwardly from the second support elastic arm 152 and resting against the upper side of the second inclined arm 133 of the contact elastic arm 13. The middle portions of the side walls 112 and the top wall 113 are completely cut away to form a window 114.

[0058] The difference between the outer frame 20 and the outer frame 20 is that an escape groove 211 is punched upwards to form the outer frame body 21 at the position corresponding to the support arm 15 so that the support arm 15 has a certain elastic deformation space in the vertical direction.

[0059] The insulating body 31 and positioning lock block 32 of the insulating housing 30 are substantially identical to those of the first embodiment. When the pin P of the docking connector is inserted into the mating space S, the lower surface of the pin P abuts against the lower contact 134, while the upper surface of the pin P abuts below the contact portion 132 of the contact spring arm 13. The support arm 15 abuts above the second inclined arm 133 of the contact spring arm 13, providing the contact spring arm 13 with greater elastic force to ensure stable contact conduction.

[0060] However, there is no joint seam at the top wall 113 of the plug-in portion 11 of the conductive terminal 10 of the second embodiment. The joint seam can be placed at the junction of the top wall 113 and the side wall 112, and the outer frame body 21 is welded and fixed to the front and rear ends of the top wall 113 at the front and rear ends.

[0061] The terminal assembly A of the connector assembly of the present application secures the outer frame 20 by wrapping around the plug portion 11 of the conductive terminal 10. This outer frame 20 enhances the strength and stability of the plug portion 11 while ensuring good locking performance of the locking spring arm 23. Furthermore, when two rows of terminal slots 311 are provided, only one positioning lock block 32 is required to lock the two rows of terminal assemblies A.

[0062] The technical features of the above embodiments can be combined arbitrarily. 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.

[0063] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A terminal assembly, characterized in that: It includes a conductive terminal and an outer frame, the conductive terminal includes a plug-in portion and a clamping portion extending backward from the plug-in portion for clamping the cable, the plug-in portion includes 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 top wall is torn and extended backward and downward to form a contact elastic arm protruding into the matching space, the bottom wall protrudes upward to form a lower contact located below the contact elastic arm, the outer frame includes an outer frame main body fixed outside the plug-in portion and a pair of outer frame side portions bent downward from the lateral sides of the outer frame main body, and the outer frame side portions are torn toward the lateral outside to form a locking elastic arm.

2. The terminal assembly according to claim 1, wherein The conductive terminal is made of copper alloy material, and the outer frame is made of stainless steel; a locking groove is formed between the plug-in portion and the clamping portion.

3. The terminal assembly according to claim 1, wherein: The side walls and the top wall are cut out to form windows on their transverse outer edges, and the rear end of the top wall extends forward and downward to form a support arm that is crimped onto the upper side of the end of the contact spring arm. The contact spring arm includes a first inclined arm extending backward from the front end of the top wall into the matching space, a second inclined arm extending obliquely backward and upward from the first inclined arm, and a contact portion formed at the bend of the first inclined arm and the second inclined arm.

4. The terminal assembly according to claim 3, wherein: The support arm includes a first support elastic arm extending obliquely forward and downward from the rear end of the top wall, a second support elastic arm extending obliquely forward and upward from the first support elastic arm, and a support end portion bent downward and extending from the second support elastic arm to support the upper side of the second inclined arm of the contact elastic arm.

5. The terminal assembly according to claim 4, wherein: The outer frame is punched upward at the position corresponding to the support arm to form an avoidance groove for avoiding the support arm, and the avoidance groove provides space for the elastic deformation of the support arm; the lower contacts are formed with two protruding into the matching space in the front-to-back direction, and the contact part of the contact elastic arm is directly above the two lower contacts.

6. The terminal assembly according to claim 1, wherein: The locking spring arm on the side of the outer frame includes an inclined portion formed by tearing the side of the outer frame and extending outward and rearward, and a supporting end portion formed by bending from the end of the inclined portion and extending longitudinally.

7. A connector assembly comprising an insulating housing having a plurality of terminal slots and a plurality of terminal assemblies inserted into the terminal slots, wherein the terminal slots extend through the insulating housing from front to back, and a snap groove extending through the front surface of the insulating housing is provided on the outer side of the terminal slots, characterized in that: The terminal assembly includes a conductive terminal and an outer frame, the conductive terminal includes a plug-in portion and a clamping portion extending backward from the plug-in portion for clamping the cable, the plug-in portion includes a bottom wall, a top wall, two side walls connecting the bottom wall and the top wall, a mating space surrounded by the bottom wall, the top wall and the side walls, and a contact elastic arm that tears the plug-in portion and extends into the mating space, the outer frame includes an outer frame body fixed outside the plug-in portion and a pair of outer frame side portions bent downward from the lateral sides of the outer frame body, the outer frame side portions are torn toward the lateral outside to form a locking elastic arm that is clamped into the snap groove.

8. The connector assembly according to claim 7, wherein: The contact spring arm is formed by tearing from the top wall and extending backward and downward into the matching space, the bottom wall protrudes upward to form a lower contact located below the contact spring arm, the side walls and the transverse outer edges of the top wall are cut out to form a window, and the rear end of the top wall extends forward and downward to form a support arm crimped on the upper side of the end of the contact spring arm, the contact spring arm includes a first inclined arm extending backward from the front end of the top wall to the matching space, a second inclined arm extending obliquely backward 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; the support arm includes a first support spring arm extending obliquely forward and downward from the rear end of the top wall, a second support spring arm extending obliquely forward and upward from the first support spring arm, and a support end portion formed by bending downward and extending from the second support spring arm to support the upper side of the second inclined arm of the contact spring arm.

9. The connector assembly according to claim 8, wherein: A locked groove is formed between the plug-in portion and the clamping portion, 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 terminal assembly is exposed in the locking groove, the terminal groove is formed by passing through the insulating body front to back, the terminal groove includes an upper terminal groove and a lower terminal groove side by side in the vertical direction, and the terminal assembly is inserted into both the lower terminal groove and the upper 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 terminal assembly is inserted into the terminal groove through the lower insertion groove and the upper insertion groove, 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 terminal assembly in the upper terminal groove and the lower terminal groove.

11. The connector assembly according to claim 10, wherein: The thickness of the upper limit portion gradually becomes thinner from front to back, and the upper limit portion includes a first thin wall, a second thin wall and a locking portion from back to front. Smooth inclined surfaces are set between the first thin wall and the second thin wall, and between the second thin wall and the locking portion. The first thin wall does not protrude into the terminal slot when the positioning locking block is fully inserted into the locking slot.

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