Electric connector shell, electric connector and electric connector assembly

Abstract

The utility model discloses an electric connector housing, an electric connector and an electric connector assembly. The electric connector housing comprises a housing body and a drawstring type unlocking structure arranged on the side surface of the housing body. The drawstring type unlocking structure comprises a locking elastic piece and a drawstring, the locking elastic piece is provided with a fixing part fixed to the side face of the shell body and an elastic locking part, and the connecting end of the elastic locking part is connected with the fixing part and located outside the side, away from the shell body, of the fixing part. The free end of the elastic locking part is connected with the drawstring; the drawstring is used for pulling the elastic locking part towards the direction of the fixing part so as to release the locking state of the elastic locking part; the free end is provided with a first holding part, and the side surface of the housing body is provided with a first limiting part which extends into the space between the first holding part and the fixing part and is used for preventing the first holding part from continuously moving towards the direction of the fixing part.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connectors, and particularly relates to an electrical connector housing, an electrical connector, and an electrical connector assembly. Background Art

[0002] In an electrical connector assembly, the electrical connector and the mating electrical connector are usually plugged and mated in a snap-fit manner to achieve fast and stable plugging and unplugging functions. When it is necessary to release the locked state of the electrical connector and the mating electrical connector, the snap-fit structure on the housing is pressed to disengage it from the snap-fit structure on the mating electrical connector, and then the electrical connector can be pulled out. However, with the development of electrical connectors towards miniaturization, high density, and high speed, the installation environment space left for electrical connectors is relatively narrow. In a narrow space, the traditional pressing and unlocking method becomes difficult to operate and has low efficiency.

[0003] To solve this problem, an electrical connector with a pull-band unlocking structure has emerged. As Figure 1 shown, the electrical connector with a pull-band unlocking structure includes a terminal assembly 01, a housing 02 for supporting the terminal assembly 01, and a pull-band unlocking structure 03 provided on the outer side surface of the housing 02. The pull-band unlocking structure 03 includes a locking spring piece 031 assembled on the outer side surface of the housing 02 and a pull band 032 connected to the free end of the locking spring piece 031. At the rear end of the housing 02 (the rear end refers to the end far from the mating electrical connector when plugged and mated with the mating electrical connector), a through hole 021 is provided, and the through hole 021 penetrates the side wall along the thickness direction of the side wall of the housing 02 where the locking spring piece 031 is assembled. One end of the pull band 032 is connected to the free end located outside the through hole 021, and the other end extends backward out of the electrical connector after passing through the through hole. Since the free end is arranged more forward and the pull band 032 is arranged more backward, the pull band 032 is distributed in an obtuse angle shape. When unlocking the locking spring piece 031, the pull band 032 is pulled horizontally backward. After passing through the through hole 021, the pull band 032 converts the horizontal force into a vertical force to pull the free end in the direction towards the interior of the electrical connector, so that the locking spring piece 031 disengages from the snap-fit structure of the mating electrical connector. The above electrical connector with a pull-band unlocking structure 03 can well solve the problem that it is not convenient to press and unlock in a narrow space, but a new problem appears: when the pulling force is too large and with the increase of the number of uses, since the locking spring piece 031 is not effectively limited and protected during the pulling process, the spring piece is easily deformed due to over-pulling, reducing the elastic force of the locking spring piece 031, and further reducing the clamping force with the mating electrical connector. In addition, due to the obtuse angle distribution state of the pull band 032, the free end of the locking spring piece 031 is also easily deformed due to excessive pulling force. Summary of the Utility Model

[0004] In view of the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present utility model is to provide an electric connector housing, an electric connector, and an electric connector assembly that prevent deformation of a pull - belt unlocking structure.

[0005] To solve the above - mentioned technical problem, a technical solution adopted by the present utility model is to provide an electric connector housing, which includes a housing body and a pull - belt unlocking structure arranged on the side surface of the housing body; the pull - belt unlocking structure includes a locking elastic piece and a pull belt, the locking elastic piece has a fixing part fixed on the side surface of the housing body and an elastic locking part, the connecting end of the elastic locking part is connected to the fixing part and is located outside the side of the fixing part away from the housing body, the free end of the elastic locking part is connected to the pull belt, and a relief space is formed between the free end of the elastic locking part and the fixing part; the pull belt is used to pull the elastic locking part towards the fixing part to release the locked state of the elastic locking part; a first retaining part is arranged at the free end, and a first limiting part extending into the relief space between the first retaining part and the fixing part is arranged on the side surface of the housing body, and the first limiting part is used to block the first retaining part from continuing to move towards the fixing part to prevent the free end from continuing to deform towards the fixing part.

[0006] Furthermore, a second retaining part located in the relief space between the first retaining part and the fixing part is also arranged on the elastic locking part, and a second limiting part extending into the space between the first retaining part and the second retaining part is arranged on the side surface of the housing body, and the second limiting part is used to block the second retaining part from continuing to move away from the fixing part to prevent the free end from continuing to deform away from the fixing part.

[0007] Furthermore, the elastic locking part is formed outside the side surface of the fixing part away from the housing body after being bent from the first end of the fixing part; the elastic locking part includes a bending part, a locking part, and a free part arranged in sequence from the first end to the second end of the fixing part, the bending part, as the connecting end of the elastic locking part, is connected to the first end of the fixing part, a locking piece is arranged on the side surface of the locking part away from the fixing part, the free part, as the free end of the elastic locking part, is connected to the pull belt; an elevating part extends from the end of the locking part away from the bending part in a direction away from the fixing part, and the free part extends from the extending end of the elevating part towards the second end of the fixing part;

[0008] Define the direction from the first end to the second end as the longitudinal direction, and the direction perpendicular to the longitudinal direction as the transverse direction. Both transverse sides of the free portion are defined as the first holding portions; a second holding portion is provided between each first holding portion and the fixed portion, and the second holding portion is connected to the lifting portion, the locking portion or the free portion.

[0009] Further, a limiting wall extending between the first holding portion and the second holding portion is provided on the side surface of the housing body. The side surface of the limiting wall facing the first holding portion is defined as the first limiting portion, and the side surface of the limiting wall facing the second holding portion is defined as the second limiting portion.

[0010] Further, a pull strap guiding portion is provided at a position on the fixed portion facing the free end. The pull strap guiding portion includes a first guiding surface distributed along the deformation direction of the elastic locking portion and a second guiding surface distributed along a side surface of the fixed portion facing the elastic locking portion; the first end of the pull strap is connected to the free end, and the second end extends out of the fixed portion after passing through the first guiding surface and the second guiding surface in sequence. The pull strap is at a right angle or an acute angle after being guided by the first guiding surface and the second guiding surface to prevent the first holding portion at the top of the elastic locking portion from moving outwards along the first limiting portion.

[0011] Further, the pull strap guiding portion includes a connecting portion whose one end is connected to the second end of the fixed portion and the other end is bent towards the free end, and a guiding portion provided on the connecting portion and forming a passing gap with the fixed portion. The side surface of the guiding portion facing the connecting end direction of the elastic locking portion is defined as the first guiding surface, and the side surface of the guiding portion facing the passing gap is defined as the second guiding surface;

[0012] On the projection plane projected along the deformation direction, the first guiding surface overlaps with the connection portion of the pull strap and the free end so that the pull strap is in a right-angled shape; or the first guiding surface is closer to the connecting end direction of the elastic locking portion so that the pull strap is in an acute-angled shape.

[0013] Further, an assembly groove is provided on the side surface of the housing body. The assembly groove penetrates through one side surface of the housing body along the thickness direction of the side wall of the housing body to form a through hole for the elastic locking portion to pass through, and the assembly groove also penetrates through the side wall of the housing body along the plugging and unplugging direction of the electrical connector towards the direction away from the docking connector to form an assembly port; the fixed portion of the locking elastic piece is inserted into the assembly groove from the assembly port, and the elastic locking portion passes through the through hole and extends out of the assembly groove to be exposed outside the side surface of the housing body.

[0014] Further, both lateral edges of the fixing portion extend outward beyond the corresponding edges of the elastic locking portion to form lateral limiting edges, and first limiting grooves for restricting the movement of the lateral limiting edges in both the thickness direction of the side wall and the lateral direction of the fixing portion are provided on both lateral sides of the assembly groove; the edge of the first end of the fixing portion connected to the elastic locking portion extends beyond the corresponding edge of the elastic locking portion to form a forward limiting edge, and a second limiting groove for restricting the movement of the forward limiting edge in the insertion direction is further provided on the side of the assembly groove away from the assembly opening; the fixing portion further has a holding portion protruding toward the bottom surface of the assembly groove, and a clamping groove for clamping with the holding portion is provided at the position of the bottom surface of the assembly groove corresponding to the holding portion, and the holding portion abuts in the clamping groove to restrict the movement of the fixing portion in the pulling-out direction.

[0015] To solve the above technical problems, another technical solution adopted by the present utility model is: to provide an electrical connector including the electrical connector housing described above.

[0016] To solve the above technical problems, yet another technical solution adopted by the present utility model is: to provide an electrical connector assembly including the electrical connector and a docking electrical connector inserted and mated with the electrical connector, and a locking structure for clamping with the pull - type unlocking structure of the electrical connector is provided at the position of the docking electrical connector corresponding to the pull - type unlocking structure of the electrical connector.

[0017] The principle and effect of the pull - type unlocking structure of the electrical connector in this application are as follows: Pull the pull - belt outward longitudinally, and the end of the pull - belt connected to the free portion is stressed. Under the action of the guiding portion, the longitudinal acting force is converted into a vertical acting force to pull the free portion to move vertically toward the fixing portion, driving the entire elastic locking portion to move toward the fixing portion, so that the locking member disengages from the locking structure on the docking housing. During this process, the first limiting portion of the limiting wall can block the first holding portion on the free portion from continuing to move toward the fixing portion, preventing the elastic locking portion from deforming due to excessive pulling force and preventing the pull - belt guiding portion from deforming due to excessive pulling force; when the pulling force is released, the second holding portion and the pull - belt guiding portion return to their original positions, and the second limiting portion of the limiting wall can block the second holding portion and the pull - belt guiding portion from over - returning, preventing the pull - belt guiding portion and the elastic locking portion from deforming. The setting position of the pull - belt guiding portion can make the pull - belt form a right - angle or acute - angle shape after passing through the first guiding surface and the second guiding surface. Compared with the traditional obtuse - angle arrangement method, it can prevent the free portion from deforming outward simultaneously in the vertical and horizontal directions and prevent the elastic locking portion from deforming due to excessive pulling force during unlocking. In summary, for the electrical connector housing, electrical connector, and electrical connector assembly in this application, whether during pulling the pull - belt to unlock or during returning, the damage to the locking spring caused by over - pulling can be reduced, the tensile force that the locking spring can withstand can be enhanced, and the product stability and service life can be improved. Brief Description of the Drawings

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

[0019] Figure 1 is a schematic structural diagram of an electrical connector with a strap-type unlocking structure in the prior art.

[0020] Figure 2 is a schematic structural diagram of an embodiment of the electrical connector assembly of the present utility model.

[0021] Figure 3 is a schematic structural diagram of an embodiment of the electrical connector of the present utility model.

[0022] Figure 4 is Figure 3 a schematic structural diagram of the strap-type unlocking structure in

[0023] Figure 5 is Figure 3 a cross-sectional view taken along A-A in

[0024] Figure 6 is Figure 3 a cross-sectional view taken along B-B in

[0025] Figure 7 is Figure 6 an enlarged view of a partial C in

[0026] The reference numerals in the specification drawings are as follows:

[0027] Terminal assembly 01; housing 02; perforation 021; strap-type unlocking structure 03; locking spring piece 031; strap 032;

[0028] Electrical connector A; electrical connector housing A1; housing body A11; strap-type unlocking structure A12; docking electrical connector B; docking housing B1; card hole B2;

[0029] Locking spring piece 100; strap 200; fixing portion 110; lateral limiting edge 111; forward limiting edge 112; abutting portion 113; elastic locking portion 120; bending portion 121; strip-shaped hole 1211; locking portion 122; free portion 123; pulling hole 1231; first holding portion 1232; second holding portion 1233; lifting portion 124; avoiding space 130; strap guiding portion 140; connecting portion 141; passing gap 142; guiding portion 143; first guiding surface 1431; second guiding surface 1432; third holding portion 144;

[0030] Strap 200; strip-shaped avoiding hole 201;

[0031] Assembly groove 300; First limiting groove 301; Second limiting groove 302; Limiting wall 31; First limiting portion 310; Second limiting portion 320. Specific embodiments

[0032] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model in this article are only for the purpose of describing specific embodiments, and are not intended to limit this utility model.

[0035] Please refer to Figure 2 and Figure 3 , Figure 2 is a schematic structural diagram of an embodiment of the electrical connector assembly of this utility model, Figure 3 is Figure 2 a schematic structural diagram of the electrical connector in . The electrical connector assembly includes an electrical connector A and a docking electrical connector B that is inserted and mated with the electrical connector A. The installation end of the electrical connector A is electrically connected and mated with a substrate or a wire, and the mating end is inserted and mated with the docking mating end of the docking electrical connector B. The installation end of the docking electrical connector B is electrically connected to the base or the wire. The substrate can be a printed circuit board, a backplane, etc. The structures or functions of the electrical connector A and the docking electrical connector B can both be defined as the same or similar, and they both have a plurality of electrical connection terminals and a housing for supporting the plurality of electrical connection terminals.

[0036] In the illustrated embodiment, the housing A1 of the electrical connector is inserted into the mating housing B1 of the mating electrical connector B. A locking structure is provided inside the mating housing B1 of the mating electrical connector B, and the locking structure may be defined as a latching hole B2 or a slot provided along the thickness direction of the side wall of the mating housing B1. A strap-type unlocking structure A12 is provided on the outer side of the housing A1 of the electrical connector. The strap-type unlocking structure A12 includes a locking spring piece 100 and a strap 200. The locking spring piece 100 is configured to be snapped into the latching hole B2 or the slot when the housing A1 of the electrical connector is inserted into the mating housing B1. The strap 200 is used to pull the locking spring piece 100 inward (in the direction of the interior of the housing) to cause it to leave the latching hole B2, thereby pulling the locking spring piece 100 out of the latching hole B2 or the slot, achieving unlocking of the locking spring piece 100 and facilitating removal of the housing A1 of the electrical connector from the mating housing B1. It should be understood that in other embodiments, when the electrical connector A and the mating electrical connector B change their internal and external relationships (i.e., the mating housing B1 of the mating electrical connector B is inserted into the housing A1 of the electrical connector), the locking structure is provided on the outer side of the mating electrical connector B, and the strap-type unlocking structure A12 is correspondingly provided on the inner side of the electrical connector A. Therefore, the strap-type unlocking structure A12 can be provided on the inner side or the outer side of the electrical connector A according to the requirements of different embodiments.

[0037] Please refer to Figure 3 and Figure 4The electrical connector housing A1 includes a housing body A11 and a pull-belt unlocking structure A12 disposed on the outer side of the housing body A11. The pull-belt unlocking structure A12 includes a locking spring 100 and a pull-belt 200. The locking spring 100 has a fixing portion 110 fixed on the side of the housing body A11 and an elastic locking portion 120. The connection end of the elastic locking portion 120 is connected to the fixing portion 110 and is located on the side of the fixing portion 110 away from the housing body. The free end of the elastic locking portion 120 is connected to the pull-belt 200, and a evacuation space 130 is formed between the free end of the elastic locking portion 120 and the fixing portion 110. The pull-belt 200 is used to pull the elastic locking portion 120 toward the fixing portion 110 to release the locking state of the elastic locking portion 120. In the following, in order to more clearly describe the structure of this case, the plug-in mating direction (plug-in direction) is defined as the longitudinal direction, the direction perpendicular to the plug-in direction on the horizontal plane is defined as the transverse direction, and the direction perpendicular to a plane formed by the longitudinal and transverse directions is defined as the vertical direction. The thickness of the side wall of the shell body A11 for assembling the drawstring unlocking structure A12 is distributed along the vertical direction, and the elastic locking portion 120 is elastically deformed in the vertical direction perpendicular to the plane in the direction of the drawstring 200. Therefore, the thickness direction of the side wall and the direction of elastic deformation can both be called the vertical direction.

[0038] The fixing portion 110 and the locking spring 100 are both block-shaped structures. On the projection plane projected in the vertical direction, the two lateral edges of the fixing portion 110 both extend outwardly beyond the corresponding edges of the elastic locking portion 120 to form a lateral limiting edge 111, which is used to limit and fit on the outer side of the shell body A11 in the lateral and vertical directions to prevent the locking spring 100 from moving in the lateral and vertical directions. The first end edge (the end connected to the elastic locking portion 120) of the fixing portion 110 in the longitudinal direction toward the docking electrical connector B also exceeds the corresponding edge of the elastic locking portion 120 to form a forward limiting edge 112, which is used to limit and fit on the outer side of the shell body A11 in the insertion direction to prevent the locking spring 100 from moving in the direction of the docking electrical connector B. The fixing portion 110 has a resisting portion 113 protruding toward the outer side surface of the shell body A11 (away from the elastic locking portion 120), and the resisting portion 113 is used to resist the outer side of the shell body A11 from the pull-out direction to prevent the locking spring 100 from moving in the direction away from the docking electrical connector B in the locked state. The resisting portion 113 can be defined as an elastic resisting portion, for example, a resisting spring punched out of the fixing portion 110 by a stamping process, and the end of the resisting spring close to the docking electrical connector B is connected to the fixing portion 110, and the other end protrudes out of the fixing portion 110 toward the outer side surface of the shell. It should be understood that the above is only an exemplary description of one of the structures of the fixing portion 110 for limiting the position on the shell body A11 by way of example, and in different embodiments, it can be adaptively changed according to different assembly methods. For example, the fixing portion 110 can be assembled on the side wall of the shell body A11 by screwing, and the fixing portion 110 can be adaptively configured with a threaded hole. For another example, the fixing portion 110 can be assembled on the side wall of the housing body A11 by gluing, and the contact portion between the fixing portion 110 and the side wall can be adaptively configured with a glue groove.

[0039] The elastic locking portion 120 is formed on the side of the fixing portion 110 away from the housing body A11 after being bent from the first end of the fixing portion 110. The elastic locking portion 120 includes a bent portion 121, a locking portion 122, and a free portion 123 arranged in sequence from the first end to the second end of the fixing portion 110 along the longitudinal direction. When the pull-belt unlocking structure A12 is assembled on the outer side of the housing, the first end faces the direction of the docking electrical connector B, and the second end is away from the docking electrical connector B.

[0040] The bent portion 121, as the connecting end of the elastic locking portion 120, is connected to the first end of the fixing portion 110. Specifically, in order to make unlocking more labor-saving, before the bending process, notches are punched on both lateral sides of the portion to be bent to reduce the width of the bent portion 121. Further, strip-shaped holes 1211 distributed longitudinally are punched in the middle of the portion to be bent in the lateral direction, and the strip-shaped holes 1211 divide the portion to be bent into two strip-shaped or ribbon-shaped structures. After the bending process, the two strip-shaped or ribbon-shaped structures form two bent members spaced apart from each other. That is, the bent portion 121 includes two bent members spaced apart in the lateral direction. The first ends of the two bent members are connected to the first end of the fixing portion 110, and the second ends are bent outward (away from the outer side wall) of the fixing portion 110 and then extend a certain distance in the direction of the second end of the fixing portion 110. In this way, at least part of the edge of the first end of the fixing portion 110 can extend beyond the corresponding edge of the elastic locking portion 120 in the direction of the docking electrical connector B, and the extended first-end edge forms the forward limiting edge 112.

[0041] The lateral width of the locking portion 122 is smaller than the lateral width of the fixing portion 110, so that both lateral sides of the fixing portion 110 extend outward beyond the two side edges of the locking portion 122, forming the lateral limiting edges 111. A locking member 1221 is provided on a side surface of the locking portion 122 facing away from the fixing portion 110, and the locking member 1221 is used for being clamped with the card hole B2 or the card slot of the above-mentioned docking electrical connector B. The locking member 1221 can be defined as a block protruding from the side surface of the locking portion 122 facing away from the fixing portion 110, and the block becomes gradually thicker from the first end to the second end of the fixing portion 110, so that a side surface of the block facing the card hole B2 of the docking electrical connector B is an inclined guiding slope.

[0042] A raising portion 124 is formed at the second end (the end far from the bent portion 121) of the locking portion 122 and extends in a direction away from the fixing portion 110. The raising portion 124 is distributed in the vertical direction to increase the distance between the free portion 123 and the fixing portion 110, and is used to provide a suitable space for components such as the first limiting portion 310, the second limiting portion 320, the second holding portion 1232, and the belt guiding portion in the following text. In the illustrated embodiment, the lateral width of the raising portion 124 is smaller than the lateral width of the locking portion 122 to provide space for the second holding portion 1233 in the following text.

[0043] The free portion 123 extends from the second end (extended end) of the elevated portion 124 towards the second end of the fixed portion 110. The free portion 123, as the free end of the elastic locking portion 120, is connected to the pulling belt 200. A pulling hole 1231 for connecting with the pulling belt 200 is provided on the free portion 123. To prevent the elastic locking portion 120 from being overly deformed when the pulling belt 200 drives unlocking and restoration, enabling the elastic piece to withstand a large pulling force without being damaged, a first retaining portion 1232 is provided at the free end. A second retaining portion 1233 is also provided in the avoidance space 130 between the first retaining portion 1232 and the fixed portion 110. Correspondingly, a first limiting portion 310 for limiting and cooperating with the first retaining portion 1232 and a second limiting portion 320 for limiting and cooperating with the second retaining portion 1233 are also provided on the outer side surface of the housing body A11.

[0044] Specifically, the lateral width of the free portion 123 is greater than the lateral width of the elevated portion 124, and both of its lateral sides extend beyond the two sides of the elevated portion 124. The portions extending beyond the two sides of the elevated portion 124 are both defined as the first retaining portion 1232. A second retaining portion 1233 is provided between each first retaining portion 1232 and the fixed portion 110. The second retaining portion 1233 is connected to the elevated portion 124, the locking portion 122, or the free portion 123. In the illustrated embodiment, the two second retaining portions 1233 respectively extend from the second end of the locking portion 122 towards the second end of the fixed portion 110. The first limiting portion 310 extends into the space between the first retaining portion 1232 and the fixed portion 110 to block the first retaining portion 1232 from continuing to move towards the fixed portion 110 in the vertical direction, so as to block the free end from continuing to elastically deform towards the fixed portion 110. The second limiting portion 320 extends into the space between the first retaining portion 1232 and the second retaining portion 1233 to block the second retaining portion 1233 from continuing to move away from the fixed portion 110 in the vertical direction, so as to block the free end from continuing to elastically deform away from the fixed portion 110.

[0045] To facilitate the user's operation of the pulling belt 200, so that when the user horizontally pulls the pulling belt 200 outward, the free part 123 can be driven to move vertically toward the fixed part 110, and then the elastic locking part 120 elastically deforms vertically to release the locked state. A pulling belt guiding part 140 is arranged at a position on the fixed part 110 facing the free end. The pulling belt guiding part 140 includes a first guiding surface 1431 distributed along the deformation direction (vertical direction) of the elastic locking part 120 and a second guiding surface 1432 distributed along a side surface of the fixed part 110 facing the elastic locking part 120. The first end of the pulling belt 200 is connected to the free end, and the second end extends out of the fixed part 110 after passing through the first guiding surface 1431 and the second guiding surface 1432 in sequence. After being guided by the first guiding surface 1431 and the second guiding surface 1432, the pulling belt 200 is at a right angle or an acute angle to prevent the first holding part 1232 at the top of the elastic locking part 120 from moving outward along the first limiting part 310. Compared with the traditional obtuse angle mode in which the pulling belt 200 is guided to be in an obtuse angle shape, making the pulling belt 200 be in a right angle shape or an acute angle shape after being guided can enable the free part 123 to elastically deform vertically during unlocking, prevent the free part 123 from deforming outward both vertically and horizontally at the same time, and prevent the free part 123 and the lifting part 124 from deforming due to excessive pulling force during unlocking.

[0046] Please refer to Figure 3 , Figure 4 and Figure 5, in the illustrated embodiment, the strap guiding portion 140 includes a connecting portion 141 having one end connected to the second end of the fixing portion 110 and the other end bent toward the fixing portion 110, and a guiding portion 143 disposed on the connecting portion 141 and forming a passing gap 142 with the fixing portion 110. The lateral width of the connecting portion 141 is smaller than the lateral width of the fixing portion 110, and the lateral width of the guiding portion 143 is larger than the lateral width of the connecting portion 141, so that a passing gap 142 is formed between the fixing portion 110 and each of the portions of the guiding portion 143 located outside the two sides of the connecting portion 141, and the passing gap 142 penetrates in the longitudinal direction. Correspondingly, a strip-shaped avoiding hole 201 distributed along the length direction of the strap 200 is provided at a position corresponding to the connecting portion 141 on the strap 200, and both sides of the strip-shaped avoiding hole 201 on the strap 200 respectively extend out of the fixing portion 110 after passing through the two passing gaps 142 longitudinally. One side surface of the guiding portion 143 facing the connecting end direction of the elastic locking portion 120 is defined as the first guiding surface 1431, and the first guiding surface 1431 can be defined as an arc surface; one side surface of the guiding portion 143 facing the passing gap 142 is defined as the second guiding surface 1432. On the projection plane projected along the deformation direction, the first guiding surface 1431 and the connection portion of the strap 200 and the free end overlap to make the strap 200 in a right-angled shape; or the first guiding surface 1431 is closer to the connecting end direction of the elastic locking portion 120, so that the strap 200 is in an acute-angled shape.

[0047] Preferably, a third holding portion 144 is formed on one side surface of the guiding portion 143 facing away from the second guiding surface 1432 (the side surface facing the second limiting portion 320). The third limiting portion is used for limiting cooperation with the second limiting portion 320 to block the guiding portion 143 from continuing to move in the vertical direction toward the free portion 123, and prevent the guiding portion 143 from being excessively deformed.

[0048] The strap-type unlocking structure A12 can be assembled on the outer side surface of the housing body A11 by all known methods such as bonding, clamping, screwing, etc. In the illustrated embodiment, the strap-type unlocking structure A12 is limited on the outer side surface of the housing body A11 by the above-mentioned forward limiting edge 112, two transverse limiting edges 111 and the abutting portion 113. Specifically, an assembly groove 300 for assembling the strap-type unlocking structure A12 is provided on the outer side surface of the housing body A11. The assembly groove 300 penetrates through one side surface of the housing body A11 along the thickness direction of the side wall of the housing body A11 to form a through hole for the elastic locking portion 120 to pass through, and the assembly groove 300 also penetrates through the side wall of the housing body A11 along the insertion and extraction direction of the electrical connector A away from the docking connector to form an assembly port. The fixing portion 110 of the locking elastic piece 100 is inserted into the assembly groove 300 from the assembly port, and the elastic locking portion 120 passes through the through hole and protrudes out of the assembly groove 300 to be exposed outside the side surface of the housing body A11.

[0049] Please refer to Figure 5 , Figure 6 and Figure 7 , first limiting grooves 301 for restricting the transverse movement and vertical movement of the fixing portion 110 are provided on both transverse sides of the assembly groove 300. The first limiting grooves 301 are used for the two transverse limiting edges 111 of the fixing portion 110 to be limited therein. The transverse groove walls of the first limiting grooves 301 are in contact with the transverse limiting edges 111 of the fixing portion 110, and the two groove walls of the first limiting grooves 301 facing the vertical direction are in contact with the two side surfaces of the fixing portion 110 in the thickness direction. A second limiting groove 302 is further provided on one side of the assembly groove 300 away from the assembly port. The second limiting groove 302 is used for the forward limiting edge 112 of the fixing portion 110 to be limited therein. The groove wall of the second limiting groove 302 is in contact with the forward limiting edge 112 to restrict the movement of the forward limiting edge 112 in the insertion direction. A card slot is provided at the position of the bottom surface of the assembly groove 300 corresponding to the abutting portion 113. The abutting portion 113 abuts in the card slot to restrict the fixing portion 110 from moving in the extraction direction. A limiting wall 31 extending between the first holding portion 1232 and the second holding portion 1233 is provided on the side surface of the housing body A11. Corresponding to the two first holding portions 1232, a limiting wall 31 is respectively provided on both transverse sides of the assembly groove 300. The side surface of the limiting wall 31 facing the first holding portion 1232 is defined as a first limiting portion 310, and the side surface of the limiting wall 31 facing the second holding portion 1233 and the third holding portion 144 is defined as a second limiting portion 320.

[0050] The assembly method of the pull - belt unlocking structure A12 of the electrical connector A in this application is as follows: Push the pull - belt unlocking structure A12 into the assembly groove 300 from the assembly port. During this process, the abutting portion 113 on the fixing portion 110 falls into the card slot on the bottom surface of the assembly groove 300, the forward limiting edge 112 of the fixing portion 110 enters the second limiting groove 302, and the two lateral limiting edges 111 of the fixing portion 110 enter the two first limiting grooves 301. Since the distance between the elastic locking portion 120 and the fixing portion 110 is greater than the depth of the assembly groove 300, the elastic locking portion 120 is exposed outside the outer surface of the side wall through the through - opening. In the natural state, the third holding portion 144 and the second holding portion 1233 are both located at the second limiting portion 320 of the limiting wall 31, and the first holding portion 1232 is located outside the first limiting surface of the limiting wall 31 and has a certain distance from it.

[0051] The principle and effect of the pull - belt unlocking structure of the electrical connector in this application are as follows: Pull the pull - belt outward along the longitudinal direction. One end of the pull - belt connected to the free portion is stressed. Under the action of the guiding portion, the longitudinal acting force is converted into a vertical acting force to pull the free portion to move in the vertical direction towards the fixing portion, driving the entire elastic locking portion to move towards the fixing portion, so that the locking member disengages from the locking structure on the docking housing. During this process, the first limiting portion of the limiting wall can block the first holding portion on the free portion from continuing to move towards the fixing portion, preventing the elastic locking portion from deforming due to excessive pulling force and preventing the pull - belt guiding portion from deforming due to excessive pulling force. When the pulling force is released, the second holding portion and the pull - belt guiding portion return to their original positions. The second limiting portion of the limiting wall can block the second holding portion and the pull - belt guiding portion from over - returning to their original positions, preventing the pull - belt guiding portion and the elastic locking portion from deforming. The setting position of the pull - belt guiding portion can make the pull - belt form a right - angle or acute - angle shape after passing through the first guiding surface and the second guiding surface. Compared with the traditional obtuse - angle arrangement method, it can prevent the free portion from deforming outward in both the vertical and horizontal directions simultaneously and prevent the elastic locking portion from deforming due to excessive pulling force during unlocking. In summary, for the electrical connector housing, electrical connector, and electrical connector assembly in this application, whether during the process of pulling the pull - belt to unlock or returning to the original position, it can slow down the damage caused to the locking spring piece due to over - pulling, enhance the tensile force that the locking spring piece can withstand, and improve the product stability and service life.

[0052] The above - mentioned embodiments only represent the preferred implementation modes of the present utility model, and their descriptions are relatively specific and detailed. However, it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An electrical connector housing, comprising a housing body and a pull-belt type unlocking structure arranged on a side surface of the housing body; the pull-belt type unlocking structure comprises a locking spring and a pull-belt, the locking spring having a fixing portion fixed to the side surface of the housing body and an elastic locking portion, the connecting end of the elastic locking portion being connected to the fixing portion and being located on a side of the fixing portion away from the housing body, the free end of the elastic locking portion being connected to the pull-belt, and an escape space being formed between the free end of the elastic locking portion and the fixing portion; the pull-belt is used to pull the elastic locking portion toward the fixing portion to release the locking state of the elastic locking portion; characterized in that: The free end is provided with a first retaining portion, and the side surface of the shell body is provided with a first limiting portion extending into the avoidance space between the first retaining portion and the fixed portion, and the first limiting portion is used to block the first retaining portion from continuing to move toward the fixed portion to prevent the free end from continuing to deform toward the fixed portion.

2. The electrical connector housing according to claim 1, wherein: The elastic locking portion is also provided with a second retaining portion located in the avoidance space between the first retaining portion and the fixed portion, and the side of the shell body is provided with a second limiting portion extending between the first retaining portion and the second retaining portion, and the second limiting portion is used to block the second retaining portion from continuing to move in a direction away from the fixed portion, so as to prevent the free end from continuing to deform in a direction away from the fixed portion.

3. The electrical connector housing according to claim 2, wherein: The elastic locking portion is bent from the first end of the fixing portion and is formed on the outside of a side surface of the fixing portion facing away from the shell body; the elastic locking portion comprises a bent portion, a locking portion and a free portion which are sequentially arranged from the first end of the fixing portion to the second end direction, the bent portion is connected to the first end of the fixing portion as the connecting end of the elastic locking portion, a locking piece is arranged on a side surface of the locking portion facing away from the fixing portion, and the free portion is connected to the drawstring as the free end of the elastic locking portion; an end of the locking portion away from the bent portion extends in a direction away from the fixing portion to form a raised portion, and the free portion extends from the extended end of the raised portion to the second end direction of the fixing portion; The direction from the first end to the second end is defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction is defined as the lateral direction, and both lateral sides of the free portion are defined as the first retaining portions; a second retaining portion is provided between each of the first retaining portions and the fixed portion, and the second retaining portion is connected to the lifting portion, the locking portion or the free portion.

4. The electrical connector housing according to claim 3, wherein: A limiting wall extending into between the first retaining portion and the second retaining portion is arranged on the side of the shell body, and the side of the limiting wall facing the first retaining portion is defined as the first limiting portion, and the side facing the second retaining portion is defined as the second limiting portion.

5. The electrical connector housing according to claim 1, wherein: A drawstring guide portion is provided on the fixed portion at a position facing the free end, and the drawstring guide portion includes a first guide surface distributed along the deformation direction of the elastic locking portion and a second guide surface distributed along a side surface of the fixed portion facing the elastic locking portion; the first end of the drawstring is connected to the free end, and the second end extends out of the fixed portion after passing through the first guide surface and the second guide surface in sequence, and the drawstring forms a right angle or an acute angle after being guided by the first guide surface and the second guide surface to prevent the first retaining portion at the top of the elastic locking portion from moving outward along the first limiting portion.

6. The electrical connector housing according to claim 5, wherein: The drawstring guide portion includes a connecting portion having one end connected to the second end of the fixing portion and the other end bent toward the free end, and a guiding portion disposed on the connecting portion and forming a through gap with the fixing portion, a side surface of the guiding portion facing the connecting end of the elastic locking portion is defined as the first guiding surface, and a side surface of the guiding portion facing the through gap is defined as the second guiding surface; On the projection surface projected along the deformation direction, the first guide surface and the connection between the drawstring and the free end overlap to make the drawstring present a right angle; or the first guide surface is closer to the connection end direction of the elastic locking portion to make the drawstring present an acute angle.

7. The electrical connector housing according to claim 1, wherein: An assembly groove is provided on the side of the shell body, and the assembly groove penetrates through the side of the shell body outwardly along the thickness direction of the side wall of the shell body to form a through opening for the elastic locking portion to pass through, and the assembly groove also penetrates through the side wall of the shell body in the direction away from the docking connector along the plugging and unplugging direction of the electrical connector to form an assembly opening; the fixing portion of the locking spring sheet is installed in the assembly groove from the assembly opening, and the elastic locking portion passes through the through opening to the outside of the assembly groove to be exposed outside the side of the shell body.

8. The electrical connector housing according to claim 7, wherein: Both lateral side edges of the fixing portion extend outwardly beyond the corresponding edges of the elastic locking portion to form lateral limiting edges, and both lateral sides of the assembly groove are provided with first limiting grooves for limiting the movement of the lateral limiting edges in the thickness direction of the side wall and in the lateral direction of the fixing portion; the first end edge of the fixing portion connected to the elastic locking portion extends beyond the corresponding edge of the elastic locking portion to form a forward limiting edge, and a second limiting groove for limiting the movement of the forward limiting edge from the insertion direction is also provided on the side of the assembly groove away from the assembly port; the fixing portion also has a supporting portion protruding toward the bottom surface of the assembly groove, and a clamping groove connected to the supporting portion is provided at the bottom surface of the assembly groove corresponding to the position of the supporting portion, and the supporting portion abuts against the clamping groove to limit the movement of the fixing portion in the removal direction.

9. An electrical connector, characterized in that: The invention comprises the electrical connector housing according to any one of claims 1 to 8.

10. An electrical connector assembly, characterized in that: It comprises the electrical connector as claimed in claim 9 and a mating electrical connector plugged with the electrical connector, wherein a locking structure which is engaged with the pull-belt unlocking structure of the mating electrical connector is provided at a position corresponding to the pull-belt unlocking structure of the electrical connector.

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