CN215184606U

CN215184606U - Female terminal connector

Info

Publication number: CN215184606U
Application number: CN202120446209.6U
Authority: CN
Inventors: 葛明琪; 张弛; 陈凯; 朱文; 周进军
Original assignee: Sunway Communication Jiangsu Co Ltd
Current assignee: Sunway Communication Jiangsu Co Ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-12-14
Anticipated expiration: 2031-03-01

Abstract

The utility model discloses a female end connector, including the second gold utensil, the second gold utensil is fixed on the frame structure, the second gold utensil includes first protection arm, second protection arm and third protection arm, first protection arm is located the end wall and keeps away from the face of bottom plate, the both ends of first protection arm are connected with the second protection arm respectively, the second protection arm is located the side wall and keeps away from the face of bottom plate, the third protection arm is located the outside of side wall, the outside limit of second protection arm is connected to the top of third protection arm, the lateral wall of first protection arm has the extension arm that extends down, the extension arm is located the outside of end wall, the bottom of extension arm is buckled outwards and is extended and form the connecting block as first leg; the bottom of the third protection arm is provided with a slit which separates the bottom of the third protection arm into a second welding leg and a third welding leg. The second hardware fitting is provided with a plurality of welding feet and can realize stable connection and conduction with an external member; the connecting block is used as a welding leg, so that waste utilization is realized, and the utilization rate of resources is improved.

Description

Female terminal connector

Technical Field

The utility model relates to a board is to board connector technical field, especially relates to female end connector.

Background

The board-to-board connector comprises a male end connector and a female end connector which are matched in a splicing manner, the female end connector comprises a female base, the female base comprises a bottom plate, a middle island, two side walls which are oppositely arranged and two end walls which are oppositely arranged, the middle island, the side walls and the end walls are respectively connected with the bottom plate, two ends of the side walls are respectively connected with the two end walls, a frame structure is enclosed by the two side walls and the two end walls, the middle island is positioned in the frame structure, a containing cavity for containing at least part of the region of the male end connector is formed between the middle island and the frame structure, in order to protect the end head of the middle island from being damaged so as to prolong the service life and the electrical property of the female end connector, the end part of the female base is generally provided with a female end fitting, in the prior art, the female end fitting is only provided with welding pins on the side edge, and the end part of the female end fitting is provided with no welding pins, in practical use, the welding of the female end fitting and the external member is unstable, so that the grounding performance of the female end fitting cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provided is a female connector which is welded stably to an external member.

In order to solve the technical problem, the utility model discloses a technical scheme be: the female end connector comprises a female seat, the female seat comprises a bottom plate, a middle island, two side walls and two end walls, the two side walls and the two end walls are oppositely arranged, the middle island, the two side walls and the end walls are respectively connected with the bottom plate, two ends of the side walls are respectively connected with the two end walls, a frame structure is enclosed by the two side walls and the two end walls, the middle island is positioned in the frame structure, an accommodating cavity used for accommodating at least part of the region of the male end connector is formed between the middle island and the frame structure, a female end fitting is arranged at the end part of the female seat and comprises a second fitting, the second fitting is fixed on the frame structure and comprises a first protection arm, a second protection arm and a third protection arm, the first protection arm is positioned on the surface of the end wall, which is far away from the bottom plate, and two ends of the first protection arm are respectively connected with the second protection arm, the second protection arm is positioned on the surface, far away from the bottom plate, of the side wall, the third protection arm is positioned on the outer side of the side wall, the top end of the third protection arm is connected with the outer side edge of the second protection arm, the outer side wall of the first protection arm is provided with an extension arm extending downwards, the extension arm is positioned on the outer side of the end wall, and the bottom of the extension arm is bent outwards and extends to form a connecting block serving as a first welding leg; the bottom of the third protection arm is provided with a slit, and the bottom of the third protection arm is divided into a second welding leg and a third welding leg by the slit.

Furthermore, the bottom surface of the first solder leg, the bottom surface of the second solder leg and the bottom surface of the third solder leg are coplanar.

Furthermore, the second hardware fitting is connected with the female seat in a buckling mode.

Furthermore, a clamping block and/or a first clamping foot are/is arranged on the extension arm.

Furthermore, a second clamping pin matched with the side wall is arranged on the second welding leg and/or the third welding leg.

Further, the bottom of the second welding leg and/or the third welding leg is provided with a welding plate part which extends towards the outside in a bending way.

Furthermore, the second hardware fitting further comprises a corner collapse protection edge, the end part of the second protection arm far away from the first protection arm, the inner side edge of the second protection arm and the inner side edge of the first protection arm are respectively connected with the corner collapse protection edge, and the corner collapse protection edge is obliquely extended towards the direction close to the bottom of the accommodating cavity.

Furthermore, the bottom of the outer side wall of the end wall is connected with an L-shaped limiting block, a limiting space is formed between the L-shaped limiting block and the end wall, and a part of the extension arm is located in the limiting space.

Furthermore, the second hardware fitting further comprises an elastic cantilever, a side edge of the third protection arm, which is close to the outer side surface of the end wall, is connected with the elastic cantilever, a position avoiding groove is formed in the frame structure, the position avoiding groove comprises a first groove which communicates the outer side surface of the end wall with the accommodating cavity, the first groove is arranged close to the side wall, the elastic cantilever comprises an outer cantilever, a bending arm and an inner cantilever which are sequentially connected, one end of the outer cantilever, which is far away from the bending arm, is connected with the third protection arm, one end of the inner cantilever penetrates through the first groove and extends into the accommodating cavity, and the inner cantilever is provided with a protruding part; when the second fitting is viewed from above in the up-down direction, the inner cantilever is at least partially covered by the second protection arm, and the protruding portion is at least partially, visibly located within the accommodation cavity.

Furthermore, keep away the position groove and still include second groove and the third groove that is linked together, the second groove is kept away from the one end intercommunication of third groove the first groove, the second groove intercommunication the lateral surface of headwall, the third groove intercommunication the lateral surface of side wall, the arm of bending is located in the second groove, outer cantilever is located the third inslot.

The beneficial effects of the utility model reside in that: the second hardware fitting is provided with a plurality of welding feet and can be stably connected and conducted with an external component, so that the electrical performance of the female end connector is guaranteed, the connecting block is used as the welding feet, waste utilization is achieved, the utilization rate of resources is improved, and resource waste is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a female terminal connector according to a first embodiment of the present invention (after a part of the structure is hidden);

FIG. 2 is a cross-sectional view of the structure shown in FIG. 1;

FIG. 3 is a cross-sectional view from another perspective of the structure shown in FIG. 1;

fig. 4 is a schematic structural diagram of a first hardware fitting in a female end connector according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of another view angle of the first hardware fitting in the female end connector according to the first embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second hardware fitting in the female end connector according to the first embodiment of the present invention;

fig. 7 is a schematic structural diagram of another view angle of the second hardware fitting in the first female end connector according to the present invention.

Description of reference numerals:

1. a base plate;

2. a middle island; 21. a sinking portion; 22. an avoidance surface; 23. injection molding holes;

3. a side wall; 31. sinking a groove;

4. an end wall;

5. an accommodating chamber;

6. a first hardware fitting; 61. a cover body portion; 611. a top plate portion; 612. an end plate portion; 613. a side plate portion; 62. a first glue grasping structure; 621. a hook part; 6211. a first glue grasping block; 622. an extension portion; 63. a guide surface; 64. a second glue grasping structure; 641. an insertion portion; 642. a second glue grasping block; 65. an anti-drop part; 651. a third glue grasping structure; 66. a fabrication hole;

71. filling the plastic area; 72. a position avoiding groove; 73. an L-shaped limiting block;

8. a second hardware fitting; 81. a first protective arm; 82. a second guard arm; 83. a third guard arm; 831. slotting; 84. a flexible cantilever; 841. an outer cantilever; 842. a bending arm; 843. an inner cantilever; 8431. a protrusion; 85. an extension arm; 851. a first solder tail; 852. a clamping block; 853. a first clamping pin; 86. a second fillet weld; 87. a third fillet weld; 88. a corner collapse protection edge; 89. and a second clamping pin.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 7, the female terminal connector includes a female base, the female base includes a bottom plate, a middle island, two side walls oppositely disposed and two end walls oppositely disposed, the middle island, the side walls and the end walls are respectively connected to the bottom plate, two ends of the side walls are respectively connected to the two end walls, a frame structure is enclosed by the two side walls and the two end walls, the middle island is located in the frame structure, a containing cavity for containing at least a partial region of the male terminal connector is formed between the middle island and the frame structure, a female terminal fitting is disposed at an end of the female base, the female terminal fitting includes a second fitting fixed on the frame structure, the second fitting includes a first protection arm, a second protection arm and a third protection arm, the first protection arm is located on a surface of the end wall far from the bottom plate, two ends of the first protection arm are respectively connected to the second protection arm, the second protection arm is positioned on the surface, far away from the bottom plate, of the side wall, the third protection arm is positioned on the outer side of the side wall, the top end of the third protection arm is connected with the outer side edge of the second protection arm, the outer side wall of the first protection arm is provided with an extension arm extending downwards, the extension arm is positioned on the outer side of the end wall, and the bottom of the extension arm is bent outwards and extends to form a connecting block serving as a first welding leg; the bottom of the third protection arm is provided with a slit, and the bottom of the third protection arm is divided into a second welding leg and a third welding leg by the slit.

From the above description, the beneficial effects of the present invention are: the second hardware fitting is provided with a plurality of welding feet and can be stably connected and conducted with an external component, so that the electrical performance of the female end connector is guaranteed, the connecting block is used as the welding feet, waste utilization is achieved, the utilization rate of resources is improved, and resource waste is reduced.

As can be seen from the above description, the welding surface of the second hardware and the external member is a plane, which facilitates the welding of the second hardware and the external member.

From the above description, the second fitting is conveniently assembled with the female seat.

As can be seen from the above description, the second hardware fitting and the female seat have numerous clamping positions, which is beneficial to ensuring the connection stability of the second hardware fitting and the female seat.

As can be seen from the above description, the presence of the welding plate portion can increase the welding area of the second fitting with the external member, thereby improving the stability of the connection of the second fitting with the external member.

According to the description, the inner wall of the frame-shaped structure can be more fully protected by the arrangement of the corner collapse protection edge, the risk that the inner wall of the frame-shaped structure is scraped is reduced, and the service life of the female end connector is prolonged.

According to the description, the L-shaped limiting block can prevent the extending arm from turning outwards, and the structural stability of the female end connector is guaranteed.

From the above description, the second hardware fitting has a novel structure and a long service life.

Example one

Referring to fig. 1 to 7, a first embodiment of the present invention is: referring to fig. 1 to 4, a board-to-board connector includes a female terminal connector, where the female terminal connector includes a female socket, the female socket includes a bottom plate 1, a middle island 2, two side walls 3 disposed opposite to each other, and two end walls 4 disposed opposite to each other, the middle island 2, the side walls 3, and the end walls 4 are connected to the bottom plate 1 respectively, two ends of the side walls 3 are connected to the two end walls 4 respectively, the two side walls 3 and the two end walls 4 form a frame structure, the middle island 2 is located in the frame structure, a containing cavity 5 for containing at least a part of the male terminal connector is formed between the middle island 2 and the frame structure, a female terminal fitting is disposed at an end of the female socket, the female terminal fitting includes a first fitting 6, the first fitting 6 includes a cover body portion 61 located at an end of the middle island 2, the cover body portion 61 includes a top plate portion 611, An end plate portion 612 and two side plate portions 613, wherein the two side plate portions 613 are connected to the two opposite sides of the end plate portion 612, and the top plate portion 611 is connected to the end plate portion 612 and the side plate portions 613; the joint of any two of the top plate 611, the end plate 612 and the side plate 613 has no gap; the bottom of the side plate portion 613 is connected to a first adhesive-grasping structure 62, and the first adhesive-grasping structure 62 includes a hook 621 embedded in the side wall 3. Preferably, the cover body portion 61 is of a stretch structure, that is, the cover body portion 61 is integrally stretch-formed. Preferably, the end plate portion 612 is provided with a guide surface 63 for guiding the male end connector, in detail, the end plate portion 612 and the top plate portion 611 are connected through the guide surface 63, and the guide surface 63 may be an inclined surface or an arc surface.

Referring to fig. 1 and 4, all regions of the cover body portion 61 are located in the accommodating cavity 5, and at this time, the cover body portion 61 is connected to the female socket by other regions of the first hardware fitting 6 to realize the holding with the female socket; however, in order to increase the connection force between the first hardware 6 and the female socket, it is preferable that the cover body 61 at least partially covers the end of the middle island 2, and specifically, at least one of the inner surface of the top plate 611, the inner surface of the side plate 613, and the inner surface of the end plate 612 abuts against the middle island 2. Preferably, the inner surface of the top plate 611, the inner surface of the side plate 613, and the inner surface of the end plate 612 directly contact the middle island 2 to cover the middle island 2. More preferably, the first metal fitting 6 and the female socket are formed as an integral structure by insert injection molding, and in this case, the inner surfaces of the top plate portion 611, the side plate portion 613, and the end plate portion 612 form a coupling force with the middle island 2. As will be readily understood, the two side plate portions 613 are respectively located on both sides of the middle island 2, the top plate portion 611 is located on the top surface of the middle island 2, and the end plate portion 612 is located on the end surface of the middle island 2. Preferably, the outer side surface of the side plate portion 613 is flush with the side surface of the middle island 2.

Referring to fig. 1 and fig. 2, in order to make the board-to-board connector thinner, in this embodiment, a sinking portion 21 is disposed at an end of the middle island 2, the top plate portion 611 is located above the sinking portion 21, and a top surface of the top plate portion 611 is not higher than a top surface of the middle island 2. Optionally, a sinking groove 31 is formed in the side wall 3, the sinking groove 31 corresponds to the setting of the sinking portion 21, the top surface of the top plate portion 611 is not higher than the setting of the bottom surface of the sinking groove 31, preferably, one end of the top plate portion 611 far away from the end plate portion 612 is embedded in the middle island 2, that is, one end of the top plate portion 611 far away from the end plate portion 612 is embedded in the side wall of the sinking portion 21. At this time, a clearance area for avoiding a partial area of the male terminal connector is formed above the sinking groove 31 and the top plate portion 611, so that the thickness of the board-to-board connector after the insertion fitting can be reduced. In order to prevent the male connector from rubbing the edge of the sinking portion 21, the top surface of the middle island 2 and the bottom surface of the sinking portion 21 are connected and transited through an avoiding surface 22, in this embodiment, the avoiding surface 22 is an inclined surface, and in other embodiments, the avoiding surface 22 may also be an arc surface.

As shown in fig. 2, in order to improve the production yield of the female end connector, the bottom surface of the sinking portion 21 abuts against the inner surface of the top plate portion 611, an injection hole 23 penetrating through the bottom surface of the sinking portion 21 and the bottom surface of the bottom plate 1 is formed in the female seat, and the injection hole 23 is arranged corresponding to the top plate portion 611. In the process of injection molding of the first hardware fitting 6 and the female socket insert, a manufacturer can press the top plate portion 611 through the injection molding hole 23, so that the top plate portion 611 can tightly press the injection mold, thereby ensuring the flatness of the top surface of the top plate portion 611 in the molded female end connector and avoiding the injection molding material remaining on the top surface of the top plate portion 611.

As shown in fig. 3 and 4, specifically, the first rubber catching structure 62 further includes an extending portion 622 embedded in the bottom plate 1, one end of the extending portion 622 is connected to the bottom end of the side plate portion 613, and the other end of the extending portion 622 extends into the side wall 3 and is bent to form the hook portion 621. In this embodiment, the hook 621 is bent toward the accommodating cavity 5.

In order to further improve the adhesive-grasping capability of the first adhesive-grasping structure 62, at least one side of the hook 621 is provided with a first adhesive-grasping block 6211 and/or a first adhesive-grasping groove.

With reference to fig. 2 and fig. 4, in order to further improve the bonding force between the cover body 61 and the middle island 2, the top plate portion 611 is connected to a second glue-catching structure 64, the second glue-catching structure 64 includes an extending portion 641 embedded in the middle island 2, and at least one side of the extending portion 641 is provided with a second glue-catching block 642 and/or a second glue-catching groove. Preferably, the connection portion between the extending portion 641 and the top plate portion 611 is located in the middle area of the side edge of the top plate portion 611 far away from the end plate portion 612, so that the top plate portion 611 can be effectively prevented from bulging, in detail, in the insert injection molding process, the position of the top plate portion 611 can be accurately located by the injection molding hole 23, and in the insert injection molding female seat, the second glue grasping structure 64 can pull the top plate portion 611, so that the top plate portion 611 is prevented from moving in the direction far away from the bottom plate 1, and the structural stability of the female end connector is effectively improved.

Referring to fig. 2, 4 and 5, the first hardware fitting 6 further includes an embedding portion embedded in the bottom plate 1 and an anti-falling portion 65 at least partially embedded in the end wall 4, the embedding portion connects the cover body portion 61 and the anti-falling portion 65, a third glue-catching structure 651 is disposed in a region where the anti-falling portion 65 is embedded in the end wall 4, and optionally, the third glue-catching structure 651 is a hole-and-groove. In this embodiment, the retaining portion 65 has an inverted U-shape, but in other embodiments, the retaining portion 65 may have other shapes, for example, a plate-like structure having a groove. Preferably, a portion of the retaining portion 65 is exposed to the inner side of the end wall 4 to provide protection for the end wall 4.

With reference to fig. 1, 4 and 5, further, a process hole 66 is formed in the first hardware fitting 6, a portion of the process hole 66 is located on the embedding portion, another portion of the process hole 66 is located on the anti-falling portion 65, and a portion of the female socket fills the process hole 66 to form a plastic filling area 71. Because the first hardware fitting 6 in this embodiment is an integrated structure formed by bending and stretching a metal plate, a stress concentration phenomenon may occur at the connection between the anti-falling portion 65 and the embedding portion, and the existence of the process hole 66 may also improve the stress concentration of the first hardware fitting 6, which is beneficial to prolonging the service life of the plate-to-plate connector.

Referring to fig. 1, 6 and 7, in order to protect the side wall 3 and the end wall 4, the female end fitting further includes a second fitting 8, the second fitting 8 is fixed on the frame structure, the second fitting 8 includes a first protection arm 81, a second protection arm 82, a third protection arm 83 and an elastic cantilever 84, the first protection arm 81 is located on the surface of the end wall 4 away from the bottom plate 1, two ends of the first protection arm 81 are respectively connected with the second protection arm 82, the second protection arm 82 is located on the surface of the side wall 3 away from the bottom plate 1, the third protection arm 83 is located on the outer side of the side wall 3, the top end of the third protection arm 83 is connected with the outer side edge of the second protection arm 82, the side edge of the third protection arm 83 close to the outer side surface of the end wall 4 is connected with the elastic cantilever 84, the frame structure is provided with a positioning groove 72, the avoiding groove 72 comprises a first groove communicating the outer side surface of the end wall 4 with the accommodating cavity 5, the first groove is arranged close to the side wall 3, the elastic cantilever 84 comprises an outer cantilever 841, a bent arm 842 and an inner cantilever 843 which are sequentially connected, one end of the outer cantilever 841, which is far away from the bent arm 842, is connected with the third protection arm 83, one end of the inner cantilever 843 penetrates through the first groove and extends into the accommodating cavity 5, and the inner cantilever 843 is provided with a protruding part 8431; when the second fitting 8 is viewed from above in the up-down direction, the inner suspension arm 843 is at least partially covered by the second protection arm 82, and the protrusion 8431 is at least partially, visibly located within the accommodation cavity 5. Specifically, keep away position groove 72 still includes second groove and the third groove that is linked together, the second groove is kept away from the one end intercommunication of third groove the first groove, the second groove intercommunication the lateral surface of headwall 4, the third groove intercommunication the lateral surface of side wall 3, bending arm 842 is located the second inslot, outer cantilever 841 is located the third inslot.

As shown in fig. 6, since the second hardware fitting 8 is generally transported and circulated through a material belt, a connecting block for connecting the material belt needs to be disposed on the second hardware fitting 8, in detail, the outer side wall of the first protection arm 81 has an extension arm 85 extending downward, the extension arm 85 is located outside the end wall 4, the bottom of the extension arm 85 is bent outward to form the connecting block, and preferably, the bottom surface of the connecting block is a welding surface. At this time, the connecting block not only plays a role of connecting materials, but also plays a role of electric grounding. In other words, the connecting pieces form the first leg 851 of the second hardware fittings 8.

For reducing the design degree of difficulty of injection mold, in this embodiment, first gold utensil 6 is split type structure with second gold utensil 8, and is optional, second gold utensil 8 with female seat buckle is connected, screwed connection or welding. In this embodiment, the extension arm 85 has a clip block 852 and a first clip foot 853; in other embodiments, the extension arm 85 may have only one of the latch 852 and the first latch 853.

As shown in fig. 1, in order to prevent the extension arm 85 from turning outwards, the bottom of the outer side wall of the end wall 4 is connected with an L-shaped limiting block 73, a limiting space is formed between the L-shaped limiting block 73 and the end wall 4, and a part of the extension arm 85 is located in the limiting space. Preferably, the female seat and the L-shaped limiting block 73 are integrally formed by injection molding.

As shown in fig. 6, a slit 831 is formed in the bottom of the third protection arm 83, the slit 831 divides the bottom of the third protection arm 83 into a second fillet 86 and a third fillet 87, and optionally, a second clamping leg 89 matched with the side wall 3 is formed on the second fillet 86 and/or the third fillet 87, so that the bonding force between the second hardware fitting 8 and the female seat can be improved; the bottom of second fillet weld 86 and/or third fillet weld 87 has the welding plate portion that extends towards the outside bending, the existence of welding plate portion can increase welding area to improve the stability that second gold utensil 8 and exterior member switched on.

It is understood that the bottom surfaces of the first and

second solder legs

851, 86 and the third solder leg 87 are coplanar with each other.

As shown in fig. 6 and 7, in order to provide more sufficient protection for the female seat, the second hardware 8 further includes a corner-collapse protecting edge 88, an end of the second protecting arm 82 far from the first protecting arm 81, an inner side of the second protecting arm 82, and an inner side of the first protecting arm 81 are respectively connected to the corner-collapse protecting edge 88, and the corner-collapse protecting edge 88 is obliquely extended toward a bottom direction of the accommodating cavity 5.

In summary, the female end connector provided by the utility model has stable structure, durability, reliable connection with external components and stable electrical property; the volume is small and the miniaturization can be realized.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The female end connector comprises a female seat, the female seat comprises a bottom plate, a middle island, two side walls and two end walls, the two side walls and the two end walls are oppositely arranged, the middle island, the two side walls and the end walls are respectively connected with the bottom plate, two ends of the side walls are respectively connected with the two end walls, a frame structure is enclosed by the two side walls and the two end walls, the middle island is positioned in the frame structure, an accommodating cavity used for accommodating at least part of the region of the male end connector is formed between the middle island and the frame structure, a female end fitting is arranged at the end part of the female seat and comprises a second fitting, the second fitting is fixed on the frame structure and comprises a first protection arm, a second protection arm and a third protection arm, the first protection arm is positioned on the surface of the end wall, which is far away from the bottom plate, and two ends of the first protection arm are respectively connected with the second protection arm, the second protection arm is located the side wall is kept away from on the face of bottom plate, the third protection arm is located the outside of side wall, the top of third protection arm is connected the outside limit of second protection arm, its characterized in that: the outer side wall of the first protection arm is provided with an extension arm extending downwards, the extension arm is positioned on the outer side of the end wall, and the bottom of the extension arm is bent outwards and extends to form a connecting block serving as a first welding leg; the bottom of the third protection arm is provided with a slit, and the bottom of the third protection arm is divided into a second welding leg and a third welding leg by the slit.

2. The female connector of claim 1, wherein: the bottom surfaces of the first welding leg, the second welding leg and the third welding leg are coplanar.

3. The female connector of claim 1, wherein: the second hardware fitting is connected with the female seat in a buckling mode.

4. The female connector of claim 3, wherein: the extension arm is provided with a clamping block and/or a first clamping foot.

5. The female connector of claim 3, wherein: and a second clamping pin matched with the side wall is arranged on the second welding leg and/or the third welding leg.

6. The female connector of claim 3, wherein: the bottom of the second welding leg and/or the third welding leg is provided with a welding plate part which is bent and extended towards the outer side.

7. The female connector of claim 1, wherein: the second hardware fitting further comprises a corner collapse protective edge, the end part of the second protective arm far away from the first protective arm, the inner side edge of the second protective arm and the inner side edge of the first protective arm are respectively connected with the corner collapse protective edge, and the corner collapse protective edge is obliquely extended towards the direction close to the bottom of the accommodating cavity.

8. The female connector of claim 1, wherein: the bottom of the lateral wall of headwall is connected with L style of calligraphy stopper, form spacing space between L style of calligraphy stopper and the headwall, a part of extension arm is located in the spacing space.

9. The female connector of claim 1, wherein: the second hardware fitting further comprises an elastic cantilever, the side edge, close to the outer side surface of the end wall, of the third protection arm is connected with the elastic cantilever, a position avoiding groove is formed in the frame-shaped structure and comprises a first groove communicated with the outer side surface of the end wall and the accommodating cavity, the first groove is arranged close to the side wall, the elastic cantilever comprises an outer cantilever, a bending arm and an inner cantilever which are sequentially connected, one end, far away from the bending arm, of the outer cantilever is connected with the third protection arm, one end of the inner cantilever penetrates through the first groove and extends into the accommodating cavity, and a protruding portion is arranged on the inner cantilever; when the second fitting is viewed from above in the up-down direction, the inner cantilever is at least partially covered by the second protection arm, and the protruding portion is at least partially, visibly located within the accommodation cavity.

10. The female connector of claim 9, wherein: keep away the position groove and still including second groove and the third groove that is linked together, the second groove is kept away from the one end intercommunication of third groove the first groove, the second groove intercommunication the lateral surface of headwall, the third groove intercommunication the lateral surface of side wall, the arm of buckling is located the second inslot, outer cantilever is located the third inslot.