Electric connector

Abstract

The utility model discloses an electric connector which comprises a plurality of plug-in modules, two opposite sides of the plurality of plug-in modules are respectively provided with a protruding portion in a protruding mode, and the size of each protruding portion in the direction perpendicular to the protruding direction is smaller than the size of each plug-in module in the corresponding direction. And the electric insulation shell is provided with a plurality of plugging cavities for accommodating the plurality of plugging modules, and concave parts matched with the corresponding convex parts are arranged on two opposite sides of the plurality of plugging cavities. The electric connector at least can realize the following functions and effects: the two ends of each plug-in module are provided with the convex parts, and the transverse size of the convex parts is smaller than that of the plug-in module, so that the plug-in module can be guided and positioned in a plug-in manner, and the plug-in module can be inserted into the plug-in cavity more conveniently; and the shapes of the convex parts at the two ends of each plug-in module are different, so that the direction of the plug-in module can be quickly identified, and a fool-proof function is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electric signal transmission, in particular to an electric connector. Background Art

[0002] With the development of 5G and 6G technologies, people have higher and higher demands on the transmission rate of modern data communication transmission systems. As the core bridge of data communication, the SI performance of high-speed backplane connectors will directly affect the transmission rate of modern data communication transmission systems.

[0003] The high-speed backplane connector mainly includes an outer insulating shell and a plurality of plug-in modules, wherein the outer insulating shell has a plurality of plug-in cavities for the plurality of plug-in modules to be plugged in one by one. One end of the plug-in module extends out of one end of the plug-in cavity along the plug-in direction to form a mating end, and the other end of the plug-in module extends out of the other end of the plug-in cavity to form a mounting end. Each plug-in module includes a lead frame and a plurality of electrical connection terminals arranged in the lead frame along the plug-in direction, wherein one end of the plurality of electrical connection terminals extends out of one end of the lead frame along the plug-in direction to form the mating end, and the other end extends out of the other end of the lead frame to form the mounting end. In the prior art, the lead frame is usually a regular rectangular parallelepiped structure in an oblong shape, that is, the projection surface of the lead frame projected along the plug-in direction is rectangular or rectangular, and correspondingly, the shape of each plug-in cavity is designed to be a rectangular or rectangular shape that matches the shape of the lead frame so that each plug-in module can be firmly installed in each plug-in cavity. However, the design of the plug-in module and the plug-in cavity in such a rectangular or long regular shape is not convenient for installing the plug-in module, is not convenient for identifying the direction of the plug-in module during installation, and the degree of installation firmness cannot be improved. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an electrical connector which is convenient for assembling the plug-in module and increases the assembly firmness of the plug-in module.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an electrical connector, comprising:

[0006] A plurality of plug-in modules, each of which has a convex portion protruding from two opposite sides thereof, wherein a dimension of the convex portion in a direction perpendicular to the protruding direction is smaller than a dimension of the upper edge of the plug-in module in a corresponding direction; and

[0007] The electrical insulation shell has a plurality of plug-in cavities for accommodating the plurality of plug-in modules, and opposite sides of the plurality of plug-in cavities are provided with recesses matched with corresponding protrusions.

[0008] Furthermore, the protruding direction of the protrusion is defined as a second direction, and the direction perpendicular to the protruding direction is defined as a first direction perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the plug-in direction of the plug-in module; the protrusion is defined as a variable cross-section structure that gradually changes along the second direction.

[0009] Furthermore, a cross section of the protrusion gradually increases along the second direction away from the plug-in module.

[0010] Furthermore, the convex portion has two inclined surfaces facing the first direction and a convex surface connected to an end of the two inclined surfaces away from the plug-in module.

[0011] Furthermore, the shapes of the two protrusions of each plug-in module are different.

[0012] Further, each of the plug-in modules comprises a lead frame and a plurality of electrical connection terminals distributed in the lead frame along the second direction, wherein the plurality of electrical connection terminals each comprises an embedded section embedded in the lead frame, a mating end extending from the embedded section in the positive direction of the plug-in direction to the first end of the lead frame, and a mounting end extending from the embedded section in the reverse direction of the plug-in direction to the second end of the lead frame;

[0013] Both end surfaces of each plug-in module facing the second direction are provided with the convex portion; the convex portion of each end surface includes a first convex block and a second convex block arranged at intervals along the plug-in direction;

[0014] The concave parts are arranged at both ends of each of the inserting cavities along the second direction, and each of the concave parts has a first groove tightly matched with the first protrusion and a second groove tightly matched with the second protrusion.

[0015] Further, the first protrusion is closer to the mating end, and the second protrusion is closer to the mounting end; the protrusion length of the second protrusion along the second direction is greater than the protrusion length of the first protrusion;

[0016] The bottom of the first groove and the second groove are both facing the mating end, and the notch portions are both facing the installation end; the bottom of the first groove abuts against a side surface of the first protrusion facing the mating end; the bottom of the second groove abuts against the corresponding side surface of the part of the second protrusion protruding out of the first protrusion.

[0017] Further, the first protrusion has two first inclined surfaces facing the first direction and a first convex surface connected to an end of the two first inclined surfaces away from the lead frame, and the connection between the two first inclined surfaces and the corresponding end surface of the lead frame forms a first concave arc surface, and the connection between the two first inclined surfaces and the first convex surface forms an outer convex arc surface;

[0018] The first groove is connected to the plug-in cavity, and the first groove has two first inclined walls facing the first direction and a first side groove wall connected to one end of the first inclined wall away from the plug-in cavity. A first inner convex arc surface matched with the first inner concave arc surface is formed between the two first inclined walls and the corresponding end walls of the plug-in cavity, and an outer concave arc surface matched with the outer convex arc surface is formed between the two first inclined walls and the first side groove wall; the first inner convex arc surface is tightly matched with the first inner concave arc surface, and the outer concave arc surface is tightly matched with the outer convex arc surface.

[0019] Furthermore, the shapes of the two second bumps at two ends of each lead frame are different.

[0020] Furthermore, among the two second protrusions of each lead frame, one of the second protrusions has two second inclined surfaces facing the first direction and a second convex surface connected to one end of the two second inclined surfaces away from the lead frame, and the other second protrusion has two second curved surfaces or second bent surfaces facing the first direction and a third convex surface connected to one end of the second curved surface or second bent surface away from the lead frame.

[0021] The electrical connector of the utility model can at least achieve the following functions and effects: each plug-in module is provided with a convex portion at both ends, and the lateral dimension of the convex portion is smaller than the lateral dimension of the plug-in module, which is helpful for the plug-in module plug-in guidance, positioning and other functions, and is more convenient for the plug-in module to be inserted into the plug-in cavity; the shapes of the convex portions at both ends of each plug-in module are different, which is convenient for quickly identifying the direction of the plug-in module and realizing the anti-mistake function; the convex portion is configured as a dovetail structure, and each corner of the convex portion is tightly matched with the corresponding position of the concave portion to prevent the plug-in module from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of an implementation mode of the electric connector of the utility model.

[0024] Figure 2 yes Figure 1 Enlarged view of part A in the figure.

[0025] Figure 3 yes Figure 1 Schematic diagram of the structure with the electrical insulation housing hidden.

[0026] Figure 4 yes Figure 1 Bottom view of the China Electric insulation shell.

[0027] Figure 5 is a longitudinal section view of a plug-in module.

[0028] Figure 6 yes Figure 5 Enlarged view of part B in the middle.

[0029] Figure 7 yes Figure 5 Enlarged view of part C in the middle.

[0030] Figure 8 yes Figure 4 Enlarged view of the part D in the middle.

[0031] Fig. 9 yes Figure 4 Enlarged view of part E in the middle.

[0032] The meanings of the symbols in the accompanying drawings are:

[0033] Electrically insulating housing 100; plug-in abutment surface 100a; mounting abutment surface 100b; covering portion 110; inner partition wall 111; first inner partition wall 111a; second inner partition wall 111b; third inner partition wall 111c; fourth inner partition wall 111d; fifth inner partition wall 111e; sixth inner partition wall 111f; seventh inner partition wall 111g; eighth inner partition wall 111h; ninth inner partition wall 111i; plug-in cavity 112; rib 1121; first plug-in cavity 112a; second plug-in cavity 112b; third plug-in cavity 112c; fourth plug-in cavity 112 d; fifth plug-in cavity 112e; sixth plug-in cavity 112f; seventh plug-in cavity 112g; eighth plug-in cavity 112h; ninth plug-in cavity 112i; tenth plug-in cavity 112j; first side wall 113a; second side wall 113b; third side wall 113c; fourth side wall 113d; plug-in mating portion 120; partition wall 121; first column partition wall 121a; third column partition wall 121c; fifth column partition wall 121e; seventh column partition wall 121g; ninth column partition wall 121i; terminal partition wall 1211; blocking portion 1212;

[0034] Male plug pair 20; plug-in module 200; lead frame 210; electrical connection terminal 220; signal terminal 22a; ground terminal 22b; mating end 221; first gap J; mounting end 222; shielding sheet 230;

[0035] Convex portion 300; first convex block 310; first inclined surface 311; first convex surface 312; first inner concave arc surface 313; outer convex arc surface 314; second convex block 320; second inclined surface 321; second convex surface 322; second inner concave arc surface 323; second bending surface 324; third convex surface 325; third inner concave arc surface 326;

[0036] Concave portion 400; first groove 410; groove bottom 411; first inclined wall 412; first side groove wall 413; first inner convex arc surface 414; outer concave arc surface 415; second groove 420; groove bottom 421; second inclined wall 422; second side groove wall 423; second inner convex arc surface 424; second curved wall 425; third side groove wall 426. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0040] See also Figure 1 , Figure 2 and Figure 3The electrical connector of the utility model comprises an electrical insulation housing 100 and a plurality of plug-in modules 200 arranged on the electrical insulation housing 100 and distributed along a first direction X at intervals, and each plug-in module 200 is arranged along a second direction Y perpendicular to the first direction X on a horizontal plane. Each plug-in module 200 comprises a lead frame 210, an electrical connection terminal 220 arranged in the lead frame 210, and a shielding sheet 230 arranged on a side of the lead frame 210. The plurality of electrical connection terminals 220 are arranged on the lead frame 210 at intervals along the second direction Y, one end of the plurality of electrical connection terminals 220 extends out of the first end of the lead frame 210, and the other end extends out of the second end of the lead frame 210. The portion of the plurality of electrical connection terminals 220 extending out of the first end of the lead frame 210 forms a mating end 221 for plugging and mating with a complementary electrical connector (not shown in the figure), and the portion extending out of the second end of the lead frame 210 forms a mounting end 222 electrically connected to a substrate or other electronic devices. A first gap J is formed between each adjacent two electrical connection terminals 220 in each lead frame 210, and the plurality of electrical connection terminals 220 in each lead frame 210 include a plurality of signal terminals 22a and a plurality of ground terminals 22b. Two adjacent signal terminals 22a form a group of differential signal pairs, and a group of differential signal pairs is distributed between each adjacent two ground terminals 22b. In the illustrated embodiment, the electrical connector may be a vertical electrical connector, that is, an electrical connector that is linear along the plug-in mating direction (plug-in direction Z), and the mating ends 221 of the plurality of electrical connection terminals 220 of the vertical electrical connector extend out of the first end of the electrical insulation housing 100 in the positive direction of the plug-in direction Z, and the mounting ends 222 extend out of the electrical insulation housing 100 in the reverse direction of the plug-in direction Z. That is, the mating ends 221 and the mounting ends 222 of the plurality of electrical connection terminals 220 of the vertical electrical connector extend from the first end and the second end of the electrical insulation housing 100, respectively.

[0041] The utility model electrical connector is described by taking a male connector as a specific example. The first end surface of the electrical insulation housing 100 along the plugging direction Z can be defined as a plugging abutment surface 100a when plugging with a complementary electrical connector, and the second end surface of the electrical insulation housing along the plugging direction Z can be defined as a mounting abutment surface 100b for mounting with a substrate. The electrical insulation housing 100 includes a covering portion 110 and a plug-in mating portion 120 arranged along the plugging direction Z.

[0042] The covering portion 110 includes a covering shell, a plug-in space formed in the covering shell, and a plurality of inner partition walls 111 formed in the plug-in space at intervals along a first direction X, for example, nine inner partition walls 111. The plurality of inner partition walls 111 divide the plug-in space into a plurality of plug-in cavities 112 distributed along the first direction X, each of which is provided with a plug-in module 200, and the two plug-in modules 200 in each of two adjacent plug-in cavities 112 form a male plug pair 20, and the mating end 221 of the male plug pair 20 is mated with the complementary mating end 221 of the female plug pair of the complementary electrical connector. The first end face (an end face facing the plug-in mating direction, the upper end face in the figure) and the second end face (an end face facing the installation direction, the lower end face in the figure) of the covering portion 110 (including the covering shell and the inner partition wall 111) along the plug-in direction Z can be respectively defined as the plug-in abutment surface 100a when plug-fitting with the complementary electrical connector and the installation abutment surface 100b for installation with the substrate.

[0043] See also Figure 4 In the embodiment shown, the covering shell includes a first side wall 113a, a second side wall 113b, a third side wall 113c, and a fourth side wall 113d connected to the first side wall 113a and the second side wall 113b at one end away from the third side wall 113c. The first side wall 113a, the second side wall 113b, the third side wall 113c and the fourth side wall 113d are enclosed to form a rectangular frame structure, and the space enclosed by the rectangular frame structure forms the plug-in space, and the plug-in space is connected to the outside along the plug-in direction Z.

[0044] Taking nine inner partitions 111 as an example, the plurality of inner partitions 111 can be defined as a first inner partition 111a, a second inner partition 111b, a third inner partition 111c, a fourth inner partition 111d, a fifth inner partition 111e, a sixth inner partition 111f, a seventh inner partition 111g, an eighth inner partition 111h and a ninth inner partition 111i which are spaced apart in the plug-in space along the first direction X, a first plug-in cavity 112a is formed between the first inner partition 111a and the first side wall 113a, a second plug-in cavity 112b is formed between the first inner partition 111a and the second inner partition 111b, and a third plug-in cavity 112b is formed between the second inner partition 111b and the third inner partition 111c. 2c, a fourth plug-in cavity 112d is formed between the third inner partition wall 111c and the fourth inner partition wall 111d, a fifth plug-in cavity 112e is formed between the fourth inner partition wall 111d and the fifth inner partition wall 111e, a sixth plug-in cavity 112f is formed between the fifth inner partition wall 111e and the sixth inner partition wall 111f, a seventh plug-in cavity 112g is formed between the sixth inner partition wall 111f and the seventh inner partition wall 111g, an eighth plug-in cavity 112h is formed between the seventh inner partition wall 111g and the eighth inner partition wall 111h, a ninth plug-in cavity 112i is formed between the eighth inner partition wall 111h and the ninth inner partition wall 111i, and a tenth plug-in cavity 112j is formed between the ninth inner partition wall 111i and the second side wall 113b. At least one inner cavity wall, or at most all inner cavity walls, of each plug-in cavity has a plurality of ribs 1121 protruding inwardly. In the illustrated embodiment, the two side walls of each plug-in cavity 112 facing the first direction X are provided with the plurality of ribs 1121 protruding inwardly. The length of each rib 1121 along the third direction Z can be matched with the length of the plug-in cavity 112 in the corresponding direction. Each rib 1121 can abut against two corresponding side surfaces of each lead frame 210 along the first direction X, thereby achieving the effect of clamping the lead frame 210.

[0045] The plug-in modules 200 in each plug-in cavity 112 are inserted therein along the plug-in direction Z. Specifically, the two plug-in modules 200 inserted in the first plug-in cavity 112a and the second plug-in cavity 112b, the two plug-in modules 200 inserted in the third plug-in cavity 112c and the fourth plug-in cavity 112d, the plug-in module 200 inserted in the fifth plug-in cavity 112e and the sixth plug-in cavity 112f, the plug-in module 200 inserted in the seventh plug-in cavity 112g and the eighth plug-in cavity 112h, and the plug-in module 200 inserted in the ninth plug-in cavity 112i and the tenth plug-in cavity 112j form five pairs of male plug-in pairs 20 for plugging and mating with five pairs of female plug-in pairs of the complementary electrical connector. It should be understood that the quantifiers such as five pairs, nine pairs, and ten pairs in the embodiments are all exemplified by the above-mentioned ten plug-in modules 200, and are not used as limitations on the electrical connector of the utility model.

[0046] Please continue to see Figure 1 and Figure 2 The plug-in mating portion 120 includes a plurality of columns of partition walls 121, for example, five columns of partition walls 121, which are arranged at intervals along the first direction X at the first end of the outer shell. Each column of partition walls 121 extends along the second direction Y and the extension length is adapted to the length of each plug-in cavity 112. Each column of partition walls 121 extends along the third direction Z and the extension height is determined according to the structure of the mating end 221 of the electrical connection terminal 220. In the illustrated embodiment, the five columns of partition walls 121 are erected on the first end faces of the first, third, fifth, seventh and ninth inner partition walls 111 in a one-to-one correspondence and can be integrally formed with them. Therefore, the five columns of partition walls 121 can be further defined as the first column of partition walls 121a, the third column of partition walls 121c, the fifth column of partition walls 121e, the seventh column of partition walls 121g and the ninth column of partition walls 121i. The first column partition wall 121a is used to separate the two plug-in modules 200 respectively inserted into the first plug-in cavity 112a and the second plug-in cavity 112b, so that the two plug-in modules 200 are respectively located on both sides of the first column partition wall 121a; the third column partition wall 121c is used to separate the two plug-in modules 200 respectively inserted into the third plug-in cavity 112c and the fourth plug-in cavity 112d, so that the two plug-in modules 200 are respectively located on both sides of the third column partition wall 121c; the fifth column partition wall 121e is used to separate the two plug-in modules 200 respectively inserted into the fifth plug-in cavity 112e and the sixth plug-in cavity 112f. The second partition wall 121e is used to separate the two plug-in modules 200 respectively inserted into the seventh plug-in cavity 112g and the eighth plug-in cavity 112h, so that the two plug-in modules 200 are respectively located on both sides of the seventh partition wall 121g; the second partition wall 121i is used to separate the two plug-in modules 200 respectively inserted into the ninth plug-in cavity 112i and the tenth plug-in cavity 112j, so that the two plug-in modules 200 are respectively located on both sides of the ninth partition wall 121i.

[0047] On both sides of each column of partition walls 121 facing the first direction X, there are a plurality of terminal partition walls 1211 for separating the electrical connection terminals 220 of the corresponding plug-in module 200. Each of the terminal partition walls 1211 is used to separate two adjacent electrical connection terminals 220 from each other to prevent the adjacent electrical connection terminals 220 from interfering with each other. That is, each terminal partition wall 1211 extends along the first direction X to the first gap J between the corresponding two electrical connection terminals 220. The adjacent signal terminals 22a and the adjacent signal terminals 22a and ground terminals 22b in each plug-in module 200 are separated by the corresponding terminal partition wall 1211. The two adjacent terminal partition walls 1211 and the corresponding side surfaces of the partition walls enclose a receiving space for the corresponding electrical connection terminals 220 to be received therein. A stopper 1212 is provided at one end of each column of partition walls facing the plug-in mating direction. The stopper 1212 extends along the first direction X and is used to shield and protect the mating end 221 of each electrical connection terminal 220.

[0048] The mating ends 221 of the plurality of signal terminals 22a and ground terminals 22b extend out of the first end of the lead frame 210 in the positive direction of the plug-in direction Z, so as to be located in the corresponding accommodation space, and a second gap (not shown) is formed between the mating end 221 of each electrical connection terminal 220 and the surface facing the partition wall 121, so that each electrical connection terminal 220 will not abut against the inner partition wall 111 when it is pressed by the scraping force of the complementary electrical connection terminal 220 and moves toward the inner partition wall 111 when mating with the corresponding electrical connection terminal 220 of the complementary electrical connector, thereby protecting the mating end 221 of each electrical connection terminal 220 from damage. The mounting ends 222 of the plurality of signal terminals 22a and ground terminals 22b extend out of the second end of the lead frame 210 in the reverse direction of the plug-in direction Z. That is, the ground terminal 22b and the signal terminal 22a both have an embedded section embedded in the lead frame 210, a mating end 221 extending from one end of the embedded section to the lead frame 210, and a mounting end 222 extending from the other end of the embedded section to the lead frame 210.

[0049] Each lead frame 210 is a flat rectangular parallelepiped structure, and its projected shape in the plugging direction Z is a rectangle. That is, the size of each lead frame 210 along the first direction X is smaller than its size along the plugging direction Z, and the size along the plugging direction Z is smaller than the size along the second direction Y. Therefore, the first direction X of each lead frame 210 can be called the lateral direction of the lead frame 210, the plugging direction Z can be called the height direction of the lead frame 210, and the second direction Y can be called the length direction of the lead frame 210.

[0050] Please continue to see Figure 3 and Figure 4In order to facilitate each plug-in module 200 to be plugged into the corresponding plug-in cavity 112, a convex portion 300 is convexly provided on two opposite sides of each plug-in module 200, and correspondingly, a concave portion adapted to the corresponding convex portion 300 is provided on two opposite sides of the plurality of plug-in cavities 112. The dimension of the convex portion 300 along a direction perpendicular to the protruding direction is smaller than the dimension of the plug-in module 200 along the corresponding direction. The convex portion 300 is protruded along the second direction Y, and the protruding direction of the convex portion 300 is consistent with the second direction Y. The direction perpendicular to the protruding direction may refer to the first direction X and / or the plug-in direction Z. In order to reduce manufacturing costs, the dimensions of the convex portion 300 in the first direction X, the second direction Y, and the plug-in direction Z are all smaller than the dimensions of the lead frame 210 in the three directions. The convex portion 300 is defined as a variable cross-section structure that gradually changes along two directions Y. For example, the size of the convex portion 300 in the first direction X gradually increases in the direction away from the lead frame 210 along the second direction Y, that is, the convex portion 300 is dovetail-shaped or trapezoidal-shaped on the horizontal projection plane (XY plane), with its small end close to the lead frame 210 and its large end away from the lead frame 210. Specifically, the dovetail-shaped convex portion 300 has two inclined surfaces facing the first direction X and a convex surface connected to one end of the two inclined surfaces away from the plug-in module 200, and the two inclined surfaces are inclined and distributed in a direction away from each other and away from the lead frame 210. It should be understood that the above-mentioned dovetail-shaped or trapezoidal convex portion 300 is only described as an example and is not used to specifically define the convex portion 300. The convex part 300 is added and its size is smaller than that of the lead frame 210, which can play a certain guiding and positioning role during assembly. The convex part 300 can also be made into a variable cross-section structure so that each corner of the convex part 300 can press the corresponding concave part 400 to increase the matching strength between the convex part 300 and the concave part 400. At the same time, the two convex parts 300 of each plug-in module 200 can also be configured to have different shapes, which can realize the function of preventing the plug-in module 200 from being installed in reverse during assembly.

[0051] See also Figure 5 , Figure 6 and Figure 7In the illustrated embodiment, both end surfaces of the lead frame 210 facing the second direction Y are provided with the convex portion 300, wherein the convex portion 300 of each end surface of the lead frame 210 includes a first convex block 310 and a second convex block 320 spaced apart along the plugging direction Z. The first convex block 310 is closer to the mating end 221, the second convex block 320 is closer to the mounting end 222, and the protruding length of the second convex block 320 along the second direction Y is greater than the protruding length of the first convex block 310. The first protrusion 310 has two first inclined surfaces 311 facing the first direction X and a first convex surface 312 connected to one end of the lead frame 210 away from the two first inclined surfaces 311 (away from the second direction Y), and the connection between the two first inclined surfaces 311 and the corresponding end surfaces of the lead frame 210 forms a first concave arc surface 313, and the connection between the two first inclined surfaces 311 and the first convex surface 312 forms an outer convex arc surface 314.

[0052] The shapes of the two second protrusions 320 at both ends of each lead frame 210 are different. Among the two second protrusions 320 of each lead frame 210, one of the second protrusions 320 has two second inclined surfaces 321 facing the first direction X and a second convex surface 322 connected to one end of the two second inclined surfaces 321 away from the lead frame 210, and the connection between the two second inclined surfaces 321 and the corresponding end surface of the lead frame 210 forms a second concave arc surface 323. The other second protrusion 320 has two second arc surfaces or second bent surfaces 324 facing the first direction X and a third convex surface 325 connected to one end of the second arc surface or second bent surface 324 away from the lead frame 210, and the connection between the two second arc surfaces or second bent surfaces 324 and the corresponding end surface of the lead frame 210 forms a third concave arc surface 326.

[0053] Corresponding to the first protrusion 310 and the second protrusion 320, the two ends of each of the plug-in cavities 112 facing the second direction Y are provided with the recessed portion 400, the recessed portion 400 having a first groove 410 tightly matched with the first protrusion 310 and a second groove 420 tightly matched with the second protrusion 320, the groove bottoms 411 and 421 of the first groove 410 and the second groove 420 both facing the mating end 221, and the notch portions both facing the mounting end 222. The groove bottom 411 of the first groove 410 abuts against a side surface of the first protrusion 310 facing the mating end 221; the groove bottom 421 of the second groove 420 abuts against the corresponding side surface of the portion of the second protrusion 320 protruding out of the first protrusion 310.

[0054] See also Figure 8 and Fig. 9, corresponding to the first protrusion 310, the first groove 410 is connected to the plug-in cavity 112, the first groove 410 has two first inclined walls 412 facing the first direction X and a first side groove wall 413 connected to one end of the first inclined wall 412 away from the plug-in cavity 112, the gap between the two first inclined walls 412 and the two first inclined surfaces 311 of the first protrusion 310 is 0.01mm~0.1mm, and a first inner convex arc surface 414 matched with the first inner concave arc surface 313 is formed between the two first inclined walls 412 and the corresponding end walls of the plug-in cavity 112, and an outer concave arc surface 415 matched with the outer convex arc surface 314 is formed between the two first inclined walls 412 and the first side groove wall 413; the first inner convex arc surface 414 and the first inner concave arc surface 313, and the outer concave arc surface 415 and the outer convex arc surface 314 are tightly matched.

[0055] Corresponding to one of the second protrusions 320, the second groove 420 has two second inclined walls 422 facing the first direction X and a second side groove wall 423 connected to one end of the two second inclined walls 422 away from (away from) the plug-in cavity 112. A second inner convex arc surface 424 tightly matched with the second inner concave arc surface 323 is formed between the two second inclined walls 422 and the corresponding end wall of the plug-in cavity 112. Corresponding to the other second protrusion 320, the second groove 420 has two second arc walls or second curved walls 425 facing the first direction X and a third side groove wall 426 connected to one end of the second arc wall or second curved wall 425 away from the plug-in cavity 112. A third inner convex arc surface 427 adapted to (tightly matched with) the third inner concave arc surface 326 is formed between the two second arc walls or second curved walls 425 and the corresponding end wall of the plug-in cavity 112.

[0056] The electrical connector of the utility model adopts the structure shown in the above-mentioned embodiment, and can at least achieve the following functions and effects: each plug-in module is provided with a convex portion at both ends, and the lateral dimension of the convex portion is smaller than the lateral dimension of the plug-in module, which is helpful for the plug-in module plug-in guidance, positioning and other functions, and is more convenient for the plug-in module to be inserted into the plug-in cavity; the shapes of the convex portions at both ends of each plug-in module are different, which is convenient for quickly identifying the direction of the plug-in module and realizing the anti-fool function; the convex portion is configured as a dovetail structure, and the various corners of the convex portion are tightly matched with the corresponding positions of the concave portion to prevent the plug-in module from loosening.

[0057] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An electrical connector, characterized in that: include: A plurality of plug-in modules, each of which has a convex portion protruding from two opposite sides thereof, wherein a dimension of the convex portion in a direction perpendicular to the protruding direction is smaller than a dimension of the upper edge of the plug-in module in a corresponding direction; and The electrical insulation shell has a plurality of plug-in cavities for accommodating the plurality of plug-in modules, and opposite sides of the plurality of plug-in cavities are provided with recesses matched with corresponding protrusions.

2. The electrical connector according to claim 1, wherein: The protruding direction of the protrusion is defined as a second direction, and the direction perpendicular to the protruding direction is defined as a first direction perpendicular to the second direction. Both the first direction and the second direction are perpendicular to the plug-in direction of the plug-in module; the protrusion is defined as a variable cross-section structure that gradually changes along the second direction.

3. The electrical connector according to claim 2, wherein: The cross section of the protrusion gradually increases in a direction away from the plug-in module along the second direction.

4. The electrical connector according to claim 3, wherein: The convex portion has two inclined surfaces facing the first direction and a convex surface connected to an end of the two inclined surfaces away from the plug-in module.

5. The electrical connector according to any one of claims 1 to 4, characterized in that: The shapes of the two protrusions of each plug-in module are different.

6. The electrical connector according to any one of claims 1 to 4, characterized in that: Each of the plug-in modules comprises a lead frame and a plurality of electrical connection terminals distributed in the lead frame along the second direction, wherein the plurality of electrical connection terminals each comprises an embedded section embedded in the lead frame, a mating end extending from the embedded section in the positive direction of the plug-in direction to the first end of the lead frame, and a mounting end extending from the embedded section in the negative direction of the plug-in direction to the second end of the lead frame; Both end surfaces of each plug-in module facing the second direction are provided with the convex portion; the convex portion of each end surface includes a first convex block and a second convex block arranged at intervals along the plug-in direction; The concave parts are arranged at both ends of each of the inserting cavities along the second direction, and each of the concave parts has a first groove tightly matched with the first protrusion and a second groove tightly matched with the second protrusion.

7. The electrical connector according to claim 6, wherein: The first protrusion is closer to the mating end, and the second protrusion is closer to the mounting end; the protrusion length of the second protrusion along the second direction is greater than the protrusion length of the first protrusion; The bottom of the first groove and the second groove are both facing the mating end, and the notch portions are both facing the installation end; the bottom of the first groove abuts against a side surface of the first protrusion facing the mating end; the bottom of the second groove abuts against the corresponding side surface of the part of the second protrusion protruding out of the first protrusion.

8. The electrical connector according to claim 7, wherein: The first protrusion has two first inclined surfaces facing the first direction and a first convex surface connected to an end of the two first inclined surfaces away from the lead frame, the connection between the two first inclined surfaces and the corresponding end surface of the lead frame forms a first concave arc surface, and the connection between the two first inclined surfaces and the first convex surface forms an outer convex arc surface; The first groove is connected to the plug-in cavity, and the first groove has two first inclined walls facing the first direction and a first side groove wall connected to one end of the first inclined wall away from the plug-in cavity. A first inner convex arc surface matched with the first inner concave arc surface is formed between the two first inclined walls and the corresponding end walls of the plug-in cavity, and an outer concave arc surface matched with the outer convex arc surface is formed between the two first inclined walls and the first side groove wall; the first inner convex arc surface is tightly matched with the first inner concave arc surface, and the outer concave arc surface is tightly matched with the outer convex arc surface.

9. The electrical connector according to claim 8, wherein: The shapes of the two second bumps at two ends of each lead frame are different.

10. The electrical connector according to claim 9, wherein: Among the two second protrusions of each lead frame, one of the second protrusions has two second inclined surfaces facing the first direction and a second convex surface connected to one end of the two second inclined surfaces away from the lead frame, and the other second protrusion has two second curved surfaces or second bent surfaces facing the first direction and a third convex surface connected to one end of the second curved surface or second bent surface away from the lead frame.

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