Socket connector and connector assembly

Abstract

The application discloses a socket connector and a connector assembly, wherein the socket connector comprises a first insulating seat, a first signal terminal, a first end wall protection support and a self-locking structure assembly. The self-locking structure assembly comprises a locking portion and a pulling portion, the locking portion comprises a locking protrusion passing through a locking through hole on the first insulating seat, the pulling portion comprises an annular structure, a connecting plate and a pulling handle arranged in sequence, and the locking portion is arranged on the annular structure. When the socket connector is connected with a plug connector for plugging, the pulling handle is pulled horizontally and outward, the annular structure is compressed and deformed, the locking portion is driven to move outward to realize unlocking. Compared with the prior art, the socket connector has the self-locking structure assembly, the product assembly efficiency is greatly improved, and excellent signal transmission stability is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a socket connector and a connector assembly. Background Art

[0002] With technological advancements and the rapid development of the economy and society, electronic products are moving towards thinner and higher-performance designs, placing higher demands on the stability of their signal transmission. Electronic products generally use BTB (Board-to-Board) connectors for signal transmission. After a typical BTB connector is engaged, a steel sheet is placed over the BTB connector and secured with screws to prevent the plug and receptacle connector from separating due to external forces, which could affect signal transmission.

[0003] Disadvantages: The above-mentioned BTB connector anti-detachment structure covered with steel sheets and fixed with threads occupies a large substrate area, has a complicated process and low production efficiency. Summary of the Invention

[0004] The embodiment of the present application provides a socket connector having a self-locking structural component, which greatly improves product assembly efficiency while having excellent signal transmission stability.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A socket connector includes a first insulating seat, a first signal terminal, and a first end wall protection bracket, and also includes a self-locking structure component, wherein:

[0007] The first insulating seat includes a bottom plate, a frame structure arranged on the bottom plate, and a central column located in the frame structure, wherein the frame structure includes a pair of oppositely arranged long side structures and a pair of oppositely arranged short side structures, and the inner walls of the short side structures are provided with locking through holes;

[0008] The first signal terminal is provided between the long side structure and the central column and arranged along the long side structure, and the first end wall protection frame is provided on the end wall of the frame structure;

[0009] The self-locking structure assembly includes a locking portion and a pulling portion, wherein the locking portion includes a locking protrusion passing through the locking through hole, and the pulling portion includes an annular structure, a connecting plate and a pulling handle arranged in sequence, and the locking portion is arranged on the annular structure;

[0010] When the socket connector is plugged into the mating plug connector, the pulling handle is pulled outward horizontally, and the annular structure is compressed and deformed, driving the locking portion to move outward to achieve unlocking.

[0011] Preferably, a guide surface is provided on the locking protrusion, and the guide surface extends obliquely downward toward the inner side.

[0012] Preferably, the locking portion includes a locking fixing portion, a locking connecting portion and the locking protrusion which are arranged in sequence, and the locking fixing portion is connected to the annular structure.

[0013] Preferably, the locking fixing portion includes a fixing body, a first fixing post and a second fixing post, the first fixing post is located on the outside of the annular structure away from the first signal terminal, and the second fixing post is located on the inside of the annular structure.

[0014] Preferably, a pulling installation groove is provided at the bottom of the base plate for installing and fixing the pulling part, and a column structure is provided in the pulling installation groove, and the column structure is located in the annular structure.

[0015] Preferably, the width of the column structure in the first direction is smaller than the width of the annular structure in the first direction.

[0016] Preferably, the locking connection portion includes a first connection portion and a second connection portion, the first connection portion is connected to the locking fixing portion, and the locking protrusions are provided at both ends of the second connection portion.

[0017] Preferably, the pulling portion further includes a welding fixing plate, and the welding fixing plate is arranged at the bottom of the outer side of the annular structure away from the first signal terminal.

[0018] Preferably, a grounding terminal is further included, and the grounding terminal includes a solder foot structure, a fitting plate and an elastic arm arranged in sequence, and the elastic arm is used to increase the plugging and unplugging force between the socket connector and the plug connector.

[0019] The beneficial effects of the present invention are: by setting a self-locking structural component, the locking protrusion passes through the locking through hole, and when the plug connector and the socket connector are plugged into each other, the locking protrusion is located in the locking groove on the second insulating seat of the plug connector, the plug connector and the socket connector are in a locked state, and the plug connector cannot be pulled out of the socket connector; when the pulling handle is pulled outward horizontally, the annular structure is compressed and deformed, driving the locking part to move outward, the locking protrusion disengages from the locking groove, and the plug connector and the socket connector are unlocked. At this time, the plug connector can be pulled out of the socket connector, and it has excellent signal transmission stability, and the self-locking structural component does not require an additional steel sheet covering structure to achieve anti-detachment, the process is simple, and the product assembly efficiency is greatly improved.

[0020] A connector assembly, comprising any one of the above-mentioned receptacle connectors, and also comprising a plug connector, wherein:

[0021] The plug connector includes a second insulating seat, a second signal terminal provided on the second insulating seat, and a second end wall protection bracket provided on the end wall of the second insulating seat, wherein the second insulating seat is provided with a locking groove matching the locking protrusion;

[0022] When the plug connector and the receptacle connector are mated, the first signal terminal and the second signal terminal are electrically connected to transmit signals and / or power, the locking protrusion is located in the locking groove, and the plug connector and the receptacle connector are in a locked state;

[0023] When the pulling portion is pulled outward horizontally, the locking protrusion is disengaged from the locking groove, and the plug connector and the socket connector are in an unlocked state.

[0024] The excellent effect of the present invention lies in: by setting a self-locking structural component, the locking protrusion passes through the locking through hole, and the second insulating seat of the plug connector is provided with a locking groove matching the locking protrusion. When the plug connector and the socket connector are plugged into each other, the locking protrusion is located in the locking groove, the plug connector and the socket connector are in a locked state, and the plug connector cannot be pulled out from the socket connector; the pulling handle is pulled outward horizontally, the annular structure is compressed and deformed, driving the locking part to move outward, the locking protrusion disengages from the locking groove, the plug connector and the socket connector are unlocked, and the plug connector can be pulled out from the socket connector at this time, which has excellent signal transmission stability, and has a self-locking structural component that does not require an additional steel sheet covering structure to achieve anti-detachment, the process is simple, and the product assembly efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the socket connector in an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the exploded structure of the socket connector according to an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the self-locking structural assembly in an embodiment of the present invention;

[0028] Figure 4 This is another structural schematic diagram of the self-locking structural assembly in an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the structure of the pulling part in an embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the structure of the locking portion in an embodiment of the present invention;

[0031] Figure 7 This is a schematic structural diagram of the first insulating seat in an embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the structure of the plug connector in an embodiment of the present invention;

[0033] Figure 9 for Figure 8 The schematic diagram of the plug connector structure is shown;

[0034] Figure 10 Schematic diagram of the structure of the connector assembly (locked) in an embodiment of the present invention;

[0035] Figure 11 for Figure 10 A schematic cross-sectional view of the connector assembly shown;

[0036] Figure 12 Schematic diagram of the structure of the connector assembly (unlocked) in an embodiment of the present invention;

[0037] Figure 13 for Figure 11 A cross-sectional schematic diagram of the connector assembly is shown.

[0038] Reference numerals: 100, receptacle connector; 110, first insulating seat; 111, bottom plate; 1111, pull-type mounting groove; 1112, column structure; 112, frame structure; 1121, long side structure; 1121A, first groove structure; 1122, short side structure; 1122A, locking through hole; 120, first signal terminal; 130, first end wall protection bracket; 131, first top wall guard plate; 132, first side wall guard plate; 1321, first engaging groove; 1322, first welding portion; 133, inner side drawing structure; 140, locking portion; 141, locking fixing portion; 1411, fixing body; 1412, first fixing column; 1413, second fixing column; 142, locking connecting portion; 1421, first connecting portion; 1422, second connecting portion; 143, locking protrusion; 1431, main body structure; 1432, guide surface; 150, pulling portion; 151, annular structure; 1511, first fixing groove; 1512, gap structure; 1513, second fixing groove; 152, connecting plate; 153, pulling handle; 154, welding fixing plate; 160, grounding terminal; 161, fitting plate; 162, welding foot structure; 163, elastic arm; 200, plug connector; 210, second insulating seat; 211, locking groove; 220, second signal terminal; 230, second end wall protection bracket; 231, second top wall guard plate; 232, second side wall guard plate; 2321, second engaging groove; 2322, second welding portion; 233, third side wall guard plate. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] The embodiments of the present application provide a socket connector to solve the technical problems in the prior art of using a BTB connector anti-detachment structure covered with a steel sheet and fixed with threads, which occupies a large substrate area, has a cumbersome process, and has low production efficiency. It should be noted that in the present application, the terms "lower", "below", "lower side", "bottom", and "bottom" refer to the direction in which the socket connector is located when the socket connector is plugged into the plug connector, and the opposite direction is "upper", "upper side", "upper side", or "top"; the "inner", "inside", or "interior" of the frame-type structure refers to the area surrounded by the frame-type structure, and the area outside the frame-type structure is the "outer", "outside", or "exterior" of the frame-type structure; the "inner", "inside", or "interior" of the annular structure refers to the area surrounded by the annular structure, and the area outside the annular structure is the "outer", "outside", or "exterior" of the annular structure; and the "first direction" refers to the direction in which the long side structure extends.

[0041] like Figures 1 to 7 As shown, this is an embodiment of the present application:

[0042] A socket connector 100 includes a first insulating seat 110, a first signal terminal 120, and a first end wall protection bracket 130, and also includes a self-locking structure assembly. The first insulating seat 110 includes a base plate 111, a frame structure 112 disposed on the base plate 111, and a center column 113 located within the frame structure 112. The frame structure 112 includes a pair of opposed long side structures 1121 and a pair of opposed short side structures 1122. The inner walls of the short side structures 1122 are provided with locking holes 1122A. The first signal terminal 120 is disposed between the long side structures 1121 and the center column 113 and arranged along the long side structures 1121. The first end wall protection bracket 130 is disposed on the end wall of the frame structure 223. It should be noted that the end wall is composed of the end portion where the long side structures 1121 and the short side structures 1122 are connected, and the short side structures 1122.

[0043] The self-locking assembly includes a latch portion 140 and a pull portion 150. The latch portion 140 includes a latch protrusion 143 that passes through the latch through-hole 1122A. The pull portion 150 comprises an annular structure 151, a connecting plate 152, and a pull handle 153, arranged in that order. The latch portion 140 is mounted on the annular structure 151. More specifically, the connecting plate 152 is connected to the bottom of the side of the annular structure 151 near the first signal terminal 120. Because external forces primarily deform the side of the annular structure 151 near the first signal terminal 120, the pulling force from pulling the pull handle is directly transmitted from the connecting plate 152 to the side of the annular structure 151 near the first signal terminal 120, resulting in a highly sensitive pull portion. In its natural state, the latch protrusion 143 protrudes from the inner surface of the short side structure 1122. When the socket connector 100 is plugged into the mating plug connector 200 (shown later), the pulling handle 153 is pulled outward horizontally, and the annular structure 151 is compressed and deformed, driving the locking portion 140 to move outward, thereby achieving unlocking.

[0044] In order to solve the technical problems in the prior art of the BTB connector anti-detachment structure which adopts a steel sheet covering and threaded fixing, occupies a large substrate area, has a cumbersome process and low production efficiency, the present application sets a self-locking structure component, and the locking protrusion passes through the locking through hole. When the plug connector and the socket connector are plugged into each other, the locking protrusion is located in the locking groove on the second insulating seat of the plug connector, and the plug connector and the socket connector are in a locked state, and the plug connector cannot be pulled out from the socket connector; the pulling handle is pulled outward horizontally, and the annular structure is compressed and deformed, driving the locking part to move outward, and the locking protrusion is disengaged from the locking groove, and the plug connector and the socket connector are unlocked. At this time, the plug connector can be pulled out from the socket connector, which has excellent signal transmission stability and has a self-locking structure component that does not require an additional steel sheet covering structure to achieve anti-detachment. The process is simple, which greatly improves the product assembly efficiency.

[0045] The first end wall protection bracket 130 includes a first top wall guard plate 131, a first side wall guard plate 132, and an inner extraction structure 133. The first side wall guard plate 132 is provided with a first engaging groove 1321 and a first welding portion 1322. The first end wall protection bracket 130 is integrally welded and extracted, resulting in high weld strength. For socket connectors 100 with a large number of first signal terminals 120, this ensures that the weld strength is significantly greater than the extraction force, thus ensuring the stability of the socket connector 100's performance. The first end wall protection bracket 130 is a monolithic metal structure from top to bottom. During the forced engagement of the plug connector 200 during the offset fastening, the socket connector 100 can withstand the high forces, thereby preventing deformation of the socket connector 100 that could cause misalignment of the first signal terminals 120 and result in product malfunction.

[0046] Preferably, a gap structure 1512 is provided on the side wall of the annular structure 151 on the side close to the locking protrusion 143. The provision of the gap structure 1512 helps to improve the elasticity of the annular structure 151, preventing it from undergoing irreversible deformation or excessive external force required for deformation during the process of inserting the plug connector 100 into the socket connector 200 or unlocking the socket connector 100 and the plug connector 200, thereby affecting the normal use of the self-locking function of the socket connector 100.

[0047] Preferably, the locking protrusion 143 is provided with a guide surface 1432, which extends obliquely downward toward the inside. Specifically, the locking protrusion 143 includes a body structure 1431 and a guide surface 1432, which extends obliquely downward toward the inside of the frame structure 112. When the plug connector 200 is inserted into the socket connector 100, the guide surface 1432 abuts against the plug connector 200, and the pressure on the locking protrusion 143 is transmitted to the annular structure 151, causing the annular structure 151 to be compressed and deformed. The locking protrusion 143 moves outward and continues to be inserted downward into the plug connector 100 until the guide surface 1432 is completely embedded in the locking groove 211 (shown later). The pressure on the locking protrusion 143 suddenly disappears, and the annular structure 151 returns to its natural state. The locking protrusion 143 is located in the locking groove 211. At this time, the plug connector 200 and the socket connector 100 are inserted and locked. The plug connector 200 cannot be directly pulled out upward.

[0048] Preferably, the locking portion 140 includes a locking fixing portion 141, a locking connecting portion 142, and a locking protrusion 143, which are arranged in sequence. The locking fixing portion 141 is connected to the annular structure 151. When the pulling portion 150 is pulled horizontally outward, the sidewall of the annular structure 151 on the side close to the locking protrusion 143 is compressed and deformed in a direction away from the locking protrusion 143, driving the locking portion 140 to move outward, thereby achieving unlocking. More specifically, the locking fixing portion 141 includes a fixing body 1411, a first fixing post 1412, and a second fixing post 1413. The first fixing post 1412 is located on the outside of the annular structure 151 on the side away from the first signal terminal 120, and the second fixing post 1413 is located on the inside of the annular structure 151. It should be noted that the width of the second fixing column 1413 in the first direction is smaller than the width of the annular structure 151 in the first direction, and the difference between the width of the second fixing column 1413 in the first direction and the width of the annular structure 151 in the first direction is greater than or equal to the distance that the locking portion 140 can move in the first direction.

[0049] Preferably, the locking connection portion 142 includes a first connection portion 1421 and a second connection portion 1422. The first connection portion 1421 is connected to the locking fixing portion 141, and locking protrusions 143 are provided at both ends of the second connection portion 1422. For example, a second fixing groove 1513 is provided at the top of the annular structure 151 on the side away from the first signal terminal 120, which is used to fix the fixing body 1411. A first fixing groove 1511 is provided at the top of the annular structure 151 on the side near the first signal terminal 120, which is used to fix the first connection portion 1421. When the plug connector 200 is inserted into the receptacle connector 100, the pressure exerted on the locking protrusion 143 is transmitted to the annular structure 151 via the first connection portion 1421, causing the sidewall of the annular structure 151 on the side near the locking protrusion 143 to compress and deform away from the locking protrusion 143, driving the locking portion 140 outward, allowing the plug connector 200 to be smoothly mated with the receptacle connector 100. In some embodiments, only one locking protrusion 143 is provided on the second connecting portion 1422 , and the two locking protrusions 143 on the socket connector 100 are symmetrically or centrally symmetrically arranged, which will not be described in detail herein.

[0050] Preferably, a pull-mounting groove 1111 is provided at the bottom of the base plate 111 for mounting and securing the pull portion 150. A post structure 1112 is provided within the pull-mounting groove 1111, and the post structure 1112 is positioned within the annular structure 151. More specifically, the width of the post structure 1112 in the first direction is smaller than the width of the annular structure 151 in the first direction. When the side of the annular structure 151 proximate the first signal terminal 120 deforms and abuts against the surface of the post structure 1112 proximate the first signal terminal 120, the annular structure 151 is effectively prevented from excessive deformation, thereby increasing its strength and thereby ensuring the structural stability of the receptacle connector 100.

[0051] Preferably, the pulling portion 150 further includes a welding fixing plate 154 , which is disposed at the bottom of the outer side of the annular structure 151 away from the first signal terminal 120 and connected to the bottom of the side of the annular structure 151 away from the first signal terminal 120 .

[0052] Preferably, the socket connector 100 also includes a grounding terminal 160, which includes a solder foot structure 162, a fitting plate 161, and an elastic arm 163, which are sequentially arranged. The elastic arm 163 is used to improve the plug-in and pull-out force between the socket connector 100 and the plug connector 200. Specifically, the grounding terminal 160 and the first insulating seat 110 are fixed together by insert molding, and the molding process is simple, which is conducive to reducing production costs. A first groove structure 1121A is provided on the long side structure 1121. The elastic arm 163 is provided in the first groove structure 1121A and is located directly below the first end wall protection bracket 130, reducing the risk of the elastic arm 163 collapsing. The elastic arm 163 is in electrical contact with the second end wall protection bracket 230 of the mating plug connector 200, increasing the flow path and enhancing the current carrying capacity of the socket connector.

[0053] like Figures 8 to 13 As shown, the present application also provides a connector assembly, including any of the above-described receptacle connectors 100, and a plug connector 200. The plug connector 200 includes a second insulating seat 210, a second signal terminal 220 disposed on the second insulating seat 210, and a second end wall protection bracket 230 disposed on the end wall of the second insulating seat 210. The second insulating seat 210 is provided with a locking groove 211 that matches the locking protrusion 143. In some specific embodiments, the second signal terminal 220, the second end wall protection bracket 230, and the second insulating seat 210 are fixed together by insert molding, which makes the production process simple and efficient.

[0054] When the plug connector 200 and the receptacle connector 100 are mated, the locking protrusion 143 abuts against the plug connector 200. The pressure exerted on the locking protrusion 143 is transmitted to the annular structure 151, causing the annular structure 151 to compress and deform. The locking protrusion 143 moves outward and continues to be inserted into the plug connector 100 until the pressure exerted on the locking protrusion 143 suddenly disappears. The annular structure 151 returns to its natural state and the locking protrusion 143 is located within the locking groove 211. At this point, the plug connector 200 and the receptacle connector 100 are mated and locked, and the plug connector 200 cannot be directly removed upward. When the plug connector 200 and the receptacle connector 100 are mated, the first signal terminals 120 and the second signal terminals 220 are electrically connected to transmit signals and / or power. The locking protrusion 143 is located within the locking groove 211, and the plug connector 200 and the receptacle connector 100 are in a locked state. When the pulling portion 150 is pulled horizontally outward, the locking protrusion 143 is disengaged from the locking groove 211 , and the plug connector 200 and the receptacle connector 100 are in an unlocked state.

[0055] In order to solve the technical problems in the prior art of the BTB connector anti-detachment structure which adopts steel sheet covering and threaded fixing, occupies a large substrate area, has cumbersome procedures and low production efficiency, the present application sets a self-locking structure component, the locking protrusion passes through the locking through hole, and the second insulating seat of the plug connector is provided with a locking groove matching the locking protrusion. When the plug connector and the socket connector are plugged into each other, the locking protrusion is located in the locking groove, the plug connector and the socket connector are in a locked state, and the plug connector cannot be pulled out from the socket connector; the pulling handle is pulled outward horizontally, the annular structure is compressed and deformed, driving the locking part to move outward, the locking protrusion disengages from the locking groove, and the plug connector and the socket connector are unlocked. At this time, the plug connector can be pulled out from the socket connector, which has excellent signal transmission stability and has a self-locking structure component that does not require an additional steel sheet covering structure to achieve anti-detachment. The procedure is simple, which greatly improves the product assembly efficiency.

[0056] The second end wall protection bracket 230 includes a second top wall protection plate 231, a second side wall protection plate 232 and a third side wall protection plate 233, wherein the second side wall protection plate 232 is provided with a second locking groove 2321 and a second welding portion 2322. The second top wall protection plate 231 is located at the bottom of the end wall of the second insulating seat 210, the second side wall protection plate 232 is located on the left and right sides of the end wall of the second insulating seat 210, and the third side wall protection plate 233 and the locking groove 211 are located on the same side of the second insulating seat 210. Figure 8 and Figure 9 As shown, the third sidewall guard plate 233 is located between the two locking grooves 211. In some specific embodiments, the third sidewall guard plate 233 covers the entire sidewall where it is located, and a through hole structure corresponding to the locking groove 211 is provided on the third sidewall guard plate 233.

[0057] The first end wall protection bracket 130 includes a first top wall guard plate 131, a first side wall guard plate 132, and an inner extraction structure 133. The first side wall guard plate 132 is provided with a first engaging groove 1321 and a first welding portion 1322. The first end wall protection bracket 130 is integrally welded and extracted, resulting in high weld strength. For socket connectors 100 with a large number of first signal terminals 120, this ensures that the weld strength is significantly greater than the extraction force, thus ensuring the stability of the socket connector 100's performance. The first end wall protection bracket 130 is a monolithic metal structure from top to bottom. During the forced engagement of the plug connector 200 during the offset fastening, the socket connector 100 can withstand the high forces, thereby preventing deformation of the socket connector 100 that could cause misalignment of the first signal terminals 120 and result in product malfunction.

[0058] The insert molding method is to place a pre-prepared insert of a different material in a mold, inject resin, and then bond and solidify the molten material with the insert to form an integrated product.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0060] The above-described embodiments merely illustrate the implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the 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 spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A socket connector, characterized in that: It includes a first insulating seat, a first signal terminal and a first end wall protection bracket, and also includes a self-locking structure component, wherein: The first insulating seat includes a bottom plate, a frame structure arranged on the bottom plate, and a central column located in the frame structure, wherein the frame structure includes a pair of oppositely arranged long side structures and a pair of oppositely arranged short side structures, and the inner walls of the short side structures are provided with locking through holes; The first signal terminal is provided between the long side structure and the central column and arranged along the long side structure, and the first end wall protection bracket is provided on the end wall of the frame structure; The self-locking structure assembly includes a locking portion and a pulling portion, wherein the locking portion includes a locking protrusion passing through the locking through hole, and the pulling portion includes an annular structure, a connecting plate and a pulling handle arranged in sequence, and the locking portion is arranged on the annular structure; When the socket connector is plugged into the mating plug connector, the pull handle is pulled outward horizontally, the annular structure is compressed and deformed, and the locking portion is driven to move outward to unlock the connector; The locking portion includes a locking fixing portion, a locking connecting portion and the locking protrusion, which are arranged in sequence, and the locking fixing portion is connected to the annular structure; The lock fixing portion includes a fixing body, a first fixing post and a second fixing post, wherein the first fixing post is located on the outer side of the annular structure away from the first signal terminal, and the second fixing post is located on the inner side of the annular structure; A pulling installation groove is provided at the bottom of the base plate for installing and fixing the pulling part. A column structure is provided in the pulling installation groove, and the column structure is located in the annular structure.

2. The socket connector according to claim 1, wherein: The locking protrusion is provided with a guide surface, and the guide surface extends obliquely downward toward the inner side.

3. The socket connector according to claim 1, wherein: The lock connecting portion includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the lock fixing portion, and both ends of the second connecting portion are provided with the lock protrusions.

4. The socket connector according to claim 1, wherein: The width of the column structure in the first direction is smaller than the width of the annular structure in the first direction.

5. The socket connector according to claim 1, wherein: The pulling portion further includes a welding fixing plate, and the welding fixing plate is arranged at the bottom of the outer side of the annular structure away from the first signal terminal.

6. The socket connector according to claim 1, wherein: It also includes a grounding terminal, which includes a solder foot structure, a fitting plate and an elastic arm arranged in sequence. The elastic arm is used to improve the plugging and unplugging force between the socket connector and the plug connector.

7. A connector assembly, characterized in that: The socket connector according to any one of claims 1 to 6 further comprises a plug connector, wherein: The plug connector includes a second insulating seat, a second signal terminal provided on the second insulating seat, and a second end wall protection bracket provided on the end wall of the second insulating seat, wherein the second insulating seat is provided with a locking groove matching the locking protrusion; When the plug connector and the receptacle connector are mated, the first signal terminal and the second signal terminal are electrically connected to transmit signals and / or power, the locking protrusion is located in the locking groove, and the plug connector and the receptacle connector are in a locked state; When the pulling portion is pulled outward horizontally, the locking protrusion is disengaged from the locking groove, and the plug connector and the socket connector are in an unlocked state.

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