Electrical connector assembly

Abstract

The present disclosure provides an electrical connector assembly, comprising: a first electrical connector, the first electrical connector comprising a first housing, a second housing wrapped outside one end of the first housing, and a plurality of first conductive terminals located inside the first housing and the second housing; the second housing has a protruding locking structure on the outer side of the end of the first housing; a second electrical connector, the second electrical connector comprising a third housing and a plurality of second conductive terminals located inside the third housing; the inner side of the third housing has a recessed engaging structure; in the mating state of the first electrical connector and the second electrical connector, the second housing is partially embedded inside the third housing, the locking structure and the engaging structure are elastically clamped and matched, and the first conductive terminals are electrically connected with the second conductive terminals. The present disclosure can reduce the volume of the electrical connector assembly and increase the diversity of application scenarios of the electrical connector assembly.

Description

Technical Field

[0001] This disclosure relates to the field of electrical connectors, and more specifically, to an electrical connector assembly. Background Technology

[0002] Electrical connector assemblies are key components used in electronic devices for transmitting electrical signals and power. Their basic functions include circuit connection, signal transmission, and mechanical fixation. An electrical connector assembly typically consists of two electrical connectors (i.e., joints). The transmission of electrical signals and power is achieved through the mating of these two connectors. In existing electrical connector assemblies, the two connectors are generally held together by a latching structure. For example, a claw is provided on the outer surface of one connector housing, and a corresponding protrusion is provided on the outer surface of the mating connector housing; the claw and protrusion cooperate to secure the two connectors after mating. However, this holding structure results in a larger size for the electrical connector assembly, hindering miniaturization and limiting its application scenarios. Summary of the Invention

[0003] In view of this, the present disclosure provides an electrical connector assembly to at least solve the problem of the large size of existing electrical connector assemblies after the latching structure is set.

[0004] Embodiments of this disclosure provide an electrical connector assembly, including:

[0005] The first electrical connector includes a first housing, a second housing covering one end of the first housing, and a plurality of first conductive terminals located inside the first housing and the second housing; the outer side of the second housing near the first housing has a protruding locking structure.

[0006] The second electrical connector includes a third housing and a plurality of second conductive terminals located inside the third housing; the inner surface of the third housing has a groove-shaped engagement structure.

[0007] When the first and second electrical connectors are mated, the second housing portion is embedded inside the third housing, and the locking structure and the engagement structure are elastically engaged, and the first conductive terminal is electrically connected to the second conductive terminal.

[0008] In some embodiments, the elasticity of the second housing is higher than that of the third housing;

[0009] The locking structure has a compressed state during the engagement process of the locking structure and the connecting structure, and a spring-back state when the engagement of the locking structure and the connecting structure is completed, so as to give the operator a locking feel.

[0010] In some embodiments, the latching structure is a tapered annular protrusion surrounding the outer side of the second housing, and the engaging structure is a tapered annular groove surrounding the inner side of the third housing.

[0011] In some embodiments, the latching structure sequentially includes, along a direction away from the first housing, a first inclined surface inclined outward toward the second housing and an extension surface;

[0012] The joining structure includes, in sequence along the direction away from the mating surface of the second electrical connector: a guide surface, a second inclined surface inclined to the outside of the third housing, and a third inclined surface inclined to the inside of the third housing;

[0013] A tapered protrusion is formed between the first inclined surface and the extended surface to embed the engagement structure, and a tapered groove is formed between the second inclined surface and the third inclined surface to accommodate the locking structure.

[0014] In some embodiments, the angle of the conical protrusion is less than or equal to the angle of the conical groove.

[0015] In some embodiments, the first inclined surface of the latching structure and the extended surface further include an arc-shaped guide surface, which contacts the tapered groove of the engagement structure.

[0016] In some embodiments, the extension surface is perpendicular to the mating insertion direction of the first electrical connector and the second electrical connector.

[0017] In some embodiments, the inner diameter of the third housing at the guide surface gradually decreases along the direction of the guide surface toward the second inclined surface, and a tapered protrusion is formed between the guide surface and the second inclined surface. The tapered protrusion and the tapered groove of the engagement structure cooperate to engage the locking structure.

[0018] In some embodiments, the outer wall of the first housing has at least one first anti-mistake portion, and the inner wall of the third housing has at least one second anti-mistake portion, wherein the first anti-mistake portion and the second anti-mistake portion are matched when the first conductive terminal is electrically connected to the second conductive terminal.

[0019] In some embodiments, the outer wall of the second housing has a first mounting guide structure, and the outer wall of the third housing has a second mounting guide structure. When the first conductive terminal is electrically connected to the second conductive terminal, the first mounting guide structure and the second mounting guide structure are matched.

[0020] In some embodiments, the tails of the second conductive terminals are arranged in a regular polygonal pattern.

[0021] In some embodiments, the electrical connector assembly further includes:

[0022] A first conductor group, the first conductor group including at least one first conductor, the first conductor including a first conductor and a first insulating layer covering the first conductor;

[0023] Each of the first conductive terminals has a first two-section crimp portion and is crimped to a corresponding first wire, wherein the first section of the first two-section crimp portion is crimped to the first conductor and the second section is crimped to the first insulating layer.

[0024] In some embodiments, the electrical connector assembly further includes:

[0025] The second conductor group includes at least one second conductor, the second conductor including a second conductor and a second insulating layer covering the second conductor;

[0026] Each of the second conductive terminals has a second two-section crimping portion and is crimped to a corresponding second wire, wherein the first section of the second two-section crimping portion is crimped to the second conductor and the second section is crimped to the second insulating layer.

[0027] In some embodiments, the sidewall of the first segment of the first two-section crimped portion has an inspection hole penetrating the sidewall;

[0028] and / or

[0029] The sidewall of the first section of the second two-section crimping part has an inspection hole that penetrates the sidewall.

[0030] In some embodiments, the first housing has a bottom surface, from which a terminal connection cavity for receiving the first conductive terminal is formed, and the sidewall of the terminal connection cavity has an opening;

[0031] and / or

[0032] The third housing has a rear end, from which a terminal connection cavity for accommodating the second conductive terminal is provided, and the sidewall of the terminal connection cavity has an opening.

[0033] In some embodiments, one end of the first conductive terminal near the bottom surface is located inside the first housing and is not coplanar with the bottom surface;

[0034] and / or

[0035] The end of the second conductive terminal near the rear is located inside the third housing and is not coplanar with the rear.

[0036] Compared with the prior art, the electrical connector assembly provided in this disclosure embodiment achieves at least the following beneficial effects:

[0037] The disclosed electrical connector assembly, when the first electrical connector and the second electrical connector are mated, features a protruding locking structure on the outer side of the second housing near the first housing and a grooved engagement structure on the inner side of the third housing that elastically engages. The locking structure on the first electrical connector can be housed inside the second electrical connector. Compared to the existing latching structure on the outer surface of the electrical connector assembly, this reduces the size of the electrical connector assembly, achieves a smaller size, and increases the versatility of the electrical connector assembly's applications. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0039] Figure 1 This is a perspective view of the mating state of an electrical connector assembly provided in this disclosure;

[0040] Figure 2 This is an exploded view of a first electrical connector provided in this disclosure;

[0041] Figure 3 This is a perspective view of a first electrical connector provided in this disclosure;

[0042] Figure 4 yes Figure 3 Front view of the first electrical connector in the middle;

[0043] Figure 5 yes Figure 4 Enlarged view of region A in the middle;

[0044] Figure 6 This is an exploded view of a second electrical connector provided in this disclosure;

[0045] Figure 7 This is a perspective view of a second electrical connector provided in this disclosure;

[0046] Figure 8 yes Figure 1 A front view of the mating status of the electrical connector assembly;

[0047] Figure 9 yes Figure 8 A schematic diagram of the C-section;

[0048] Figure 10 yes Figure 9 Enlarged view of region B in the middle;

[0049] Figure 11 yes Figure 7 A three-dimensional view of the second electrical connector from another perspective;

[0050] Figure 12 yes Figure 7 Another perspective of the second electrical connector in the image;

[0051] Figure 13 yes Figure 7 Right view of the second electrical connector in the middle;

[0052] Figure 14 yes Figure 7 Left view of the second electrical connector in the middle;

[0053] Figure 15 This is an exploded view of another first electrical connector provided in this disclosure;

[0054] Figure 16 This is a perspective view of another first electrical connector provided in this disclosure, wherein the second housing and sealing ring are omitted;

[0055] Figure 17 This is a perspective view of another first electrical connector provided in this disclosure;

[0056] Figure 18 This is a perspective view of another first electrical connector provided in this disclosure;

[0057] Figure 19 yes Figure 17 A three-dimensional view of the first conductive terminal;

[0058] Figure 20 yes Figure 17 A front view showing the mating of the first housing, the first conductive terminal, and the first wire;

[0059] Figure 21 yes Figure 20 A schematic diagram of the GG section;

[0060] Figure 22 yes Figure 21 Enlarged view of region H in the middle;

[0061] Figure 23 This is an exploded view of another second electrical connector provided in this disclosure;

[0062] Figure 24 This is a perspective view of another second electrical connector provided in this disclosure;

[0063] Figure 25 This is a right view of another second electrical connector provided in this disclosure;

[0064] Figure 26 yes Figure 17 A schematic diagram of the structure of the first shell in the middle;

[0065] Figure 27 yes Figure 24 Schematic diagram of the third shell structure;

[0066] Figure 28 yes Figure 17 A perspective view of the first electrical connector, in which the second and fourth housings are omitted.

[0067] Figure label:

[0068] 100 First electrical connector 220 Second conductive terminal

[0069] 110 First shell 221 Tail

[0070] 111 First foolproof part; 222 Second two-stage crimping part

[0071] 111a First sub-foolproof part 230 Joint structure

[0072] 111b Second Sub-Fault Prevention Unit 231 Guiding Surface

[0073] 112 Bottom surface 232 Second inclined surface

[0074] 120 Second shell 233 Third inclined surface

[0075] 121 First installation guide structure 240 Fifth housing

[0076] 130 First conductive terminal 250 Sixth housing

[0077] 131 First two-stage crimped section 260 Sealing gasket

[0078] 140 locking structure, 270 mating surface

[0079] 141 First inclined surface 280 Positioning post

[0080] 142 Extension surface 400 First conductor group

[0081] 143 Guided Surface 410 First Conductor

[0082] 150 Fourth shell 411 First conductor

[0083] 160 Sealing ring 412 First insulation layer

[0084] 200 Second electrical connector 500 Second wire assembly

[0085] 210 Third housing 510 Second conductor

[0086] 211 Second foolproof part 511 Second conductor

[0087] 211a Third sub-foolproof part 512 Second insulation layer

[0088] 211b Fourth Sub-Section 600 Inspection Hole

[0089] 212 Second mounting guide structure 700 Terminal connection cavity

[0090] 213 followed by 710 (opening) Detailed Implementation

[0091] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0092] The use of terms such as "first," "second," and similar terms in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Furthermore, in the description of this disclosure, the terms "upper," "lower," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These are for ease of description only and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0093] It should be noted that, unless otherwise specified, the embodiments of this disclosure and the features in different embodiments can be combined with each other.

[0094] like Figure 1 As shown, embodiments of this disclosure provide an electrical connector assembly, including: a first electrical connector 100 and a second electrical connector 200.

[0095] like Figures 2 to 5 As shown, the first electrical connector 100 includes: a first housing 110, a second housing 120 covering the outer side of one end of the first housing 110, and a plurality of first conductive terminals 130 located inside the first housing 110 and the second housing 120. The outer side of the second housing 120 near the end of the first housing 110 has a protruding locking structure 140.

[0096] like Figure 6 and Figure 7As shown, the second electrical connector 200 includes a third housing 210 and a plurality of second conductive terminals 220 located inside the third housing 210. The inner surface of the third housing 210 has a groove-shaped engagement structure 230.

[0097] like Figures 8 to 10 As shown, when the first electrical connector 100 and the second electrical connector 200 are mated, the second housing 120 is partially embedded inside the third housing 210, and the locking structure 140 and the engagement structure 230 are elastically engaged, and the first conductive terminal 130 and the second conductive terminal 220 are electrically connected.

[0098] In this embodiment, when the first electrical connector 100 and the second electrical connector 200 are mated, a protruding locking structure 140 on the outer side of the second housing 120 near the first housing 110 and a grooved engagement structure 230 on the inner side of the third housing 210 elastically engage. The locking structure 140 on the first electrical connector 100 can be housed inside the second electrical connector. Compared to the existing latching structure on the outer surface of the electrical connector assembly, this reduces the size of the electrical connector assembly, achieving a smaller size and increasing the versatility of its applications. Furthermore, this embodiment enables the electrical connector assembly to form a locking effect after mating, making it less prone to loosening and providing good holding force. In addition, during the removal of the first electrical connector 100 and the second electrical connector 200, the pulling force gradually increases due to the cooperation of the locking structure 140 and the engagement structure 230, effectively preventing the electrical connector assembly from loosening under vibration or mechanical impact. This principle will be described later. Furthermore, during the process of pulling out the first electrical connector 100 and the second electrical connector 200, the protruding grooves of the locking structure 140 and the engaging structure 230 provide the operator with a "click" insertion feel during the connection, thus improving the operator's user experience.

[0099] In some embodiments, the first conductive terminal 130 and the second conductive terminal 220 may both be integrally formed.

[0100] In some embodiments, the elasticity of the second housing 120 is higher than that of the third housing 210. That is, the locking structure 140 can undergo elastic deformation under external force and return to its original shape when the external force is removed. The locking structure 140 has a compressed state during the engagement process of the locking structure 140 and the engaging structure 230 and a spring-back state when the engagement of the locking structure 140 and the engaging structure 230 is completed, so as to provide the operator with a tactile feel of engagement. Specifically, compared with the elasticity of the materials of the first housing 110, the second housing 120 and the third housing 210, the second housing 120 has the highest elasticity. The elasticity of the first housing 110 and the third housing 210 can be the same or different. During the mating process between the first electrical connector 100 and the second electrical connector 200, the first housing 110 does not participate in deformation. The protruding locking structure 140 of the second housing 120 is compressed, resulting in the main deformation. Whether the third housing 210 deforms depends on the selected material and thickness. If the material of the third housing 210 is too hard, it hardly participates in deformation; if the material of the third housing 210 has superior toughness, it will passively undergo some corresponding deformation during the insertion of the second housing 120. In some embodiments, the first housing 110 and the third housing 210 can be ordinary engineering plastics, and the second housing 120 can be highly elastic plastics. During the mating process between the first electrical connector 100 and the second electrical connector 200, the highly elastic plastic second housing 120 provides the ability to elastically deform, which, together with the ordinary engineering plastic first housing 110 and the third housing 210, further enhances the "click" feel during mating. In other embodiments, when selecting the materials for the first housing 110, the second housing 120, and the third housing 210, the elasticity of the second housing 120 should be higher than that of the third housing 210, so that the locking structure 140 and the engaging structure 230 can be engaged. Optionally, the elasticity of the material of the second housing 120 is much higher than that of the material of the third housing 210. For example, the second housing 120 is a highly elastic plastic, and the third housing is a common engineering plastic. When the first electrical connector 100 and the second electrical connector 200 are engaged, the engagement of the locking structure 140 and the engaging structure 230, combined with the better rebound of the second housing 120, results in a better engagement feel.

[0101] Continue to refer to Figures 2 to 4 , Figure 6 In some embodiments, the locking structure 140 is a conical annular protrusion surrounding the outer side of the second housing 120, and the engaging structure 230 is a conical annular groove surrounding the inner side of the third housing 210. In this embodiment, the annular protrusion and the annular groove ensure that the second housing 120 and the third housing 210 are subjected to uniform force at all circumferential positions during the insertion and removal of the first electrical connector 100 and the second electrical connector 200, thus avoiding damage after repeated insertion and removal.

[0102] like Figure 10 As shown, in some embodiments, the locking structure 140 sequentially includes, along the direction away from the first housing 110, a first inclined surface 141 inclined outwards towards the second housing 120 and an extension surface 142. The engaging structure 230 sequentially includes, along the direction away from the mating surface 270 of the second electrical connector 200, a guide surface 231, a second inclined surface 232 inclined outwards towards the third housing 210, and a third inclined surface 233 inclined inwards towards the third housing 210. A tapered protrusion is formed between the first inclined surface 141 and the extension surface 142 to embed the engaging structure 230, and a tapered groove is formed between the second inclined surface 232 and the third inclined surface 233 to receive the locking structure 140. In this embodiment, the design of the first inclined surface 141, the extension surface 142, the guide surface 231, the second inclined surface 232, and the third inclined surface 233 makes it easier for the locking structure 140 and the engagement structure 230 to be forcibly released within the mold, facilitating the preparation of the locking structure 140 and the engagement structure 230; the cooperation of the aforementioned conical protrusion and conical groove can enhance the holding force after the first electrical connector 100 and the second electrical connector 200 are mated.

[0103] Continue to refer to Figure 10 In some embodiments, the angle of the conical protrusion is less than or equal to the angle of the conical groove. The above-described arrangement in this embodiment allows the locking structure 140 to be fully embedded in the engaging structure 230, enabling the two to engage elastically to the greatest extent and further enhancing the "click" feel during mating.

[0104] Continue to refer to Figure 10 In some embodiments, the latching structure 140 further includes an arc-shaped guide surface 143 between the first inclined surface 141 and the extended surface 142, the guide surface 143 contacting the conical groove of the engagement structure 230. The guide surface 143 is a small rounded corner at the tip of the conical protrusion of the latching structure 140. If the tip of the conical protrusion is a sharp corner, it is prone to wear after repeated insertion and removal, and the worn latching structure 140 may affect the fit with the engagement structure 230. The guide surface 143 reduces the possibility of damage to the latching structure 140 after repeated insertion and removal of the electrical connector assembly, and improves the insertion and removal resistance of the latching structure 140.

[0105] Continue to refer to Figure 10 In some embodiments, the extension surface 142 is perpendicular to the mating insertion direction of the first electrical connector 100 and the second electrical connector 200. The aforementioned arrangement of the extension surface 142 in this embodiment allows the tapered protrusion of the locking structure 140 to rebound instantaneously after compression when the second housing 120 and the third housing 210 are mated, thereby improving the "click" insertion feel for the operator.

[0106] Continue to refer to Figure 10In some embodiments, the inner diameter of the third housing 210 at the guide surface 231 gradually decreases along the direction of the guide surface 231 towards the second inclined surface 232, and a tapered protrusion is formed between the guide surface 231 and the second inclined surface 232. The tapered protrusion and the tapered groove of the engaging structure 230 cooperate to engage the locking structure 140. In this embodiment, when the second housing 120 and the third housing 210 are mated (e.g. Figure 10 In the X direction (that is, the insertion direction of the second housing 120 relative to the third housing 210), the insertion and extraction force is greatest when the conical protrusion of the locking structure 140 coincides with the conical protrusion of the engaging structure 230. Once the conical protrusion of the locking structure 140 passes the conical protrusion of the engaging structure 230, a "click" insertion feel can be obtained during mating. The cooperation of the conical protrusion of the locking structure 140, the conical protrusion of the engaging structure 230 and the conical groove can improve the holding force after the first electrical connector 100 and the second electrical connector 200 are mated.

[0107] Continue to refer to Figure 10 In some embodiments, when the first electrical connector 100 and the second electrical connector 200 are disconnected (e.g. Figure 10 In the Y direction (that is, the pull-out direction of the second housing 120 relative to the third housing 210), since the second inclined surface 232 is closer to the mating surface 270 along the Y direction, the smaller the inner diameter of the third housing 210, the greater the pull-out force required, which can effectively prevent the electrical connector assembly from coming loose in environments such as vibration or mechanical impact.

[0108] like Figure 3 , Figures 11 to 13As shown, in some embodiments, the outer wall of the first housing 110 has at least one first anti-mistake part 111, and the inner wall of the third housing 210 has at least one corresponding second anti-mistake part 211. When the first electrical connector 100 mates with the second electrical connector 200, the first anti-mistake part 111 and the corresponding second anti-mistake part 211 match. The number and structure of the first anti-mistake parts 111 are set according to actual conditions and are not limited. In some embodiments, the outer wall of the first housing may have only one first anti-mistake part 111, and the inner wall of the third housing may have one corresponding second anti-mistake part 211. In other embodiments, the first housing 110 may have two different first anti-mistake parts 111, specifically: a first sub-anti-mistake part 111a and a second sub-anti-mistake part 111b. Correspondingly, the third housing 210 may have two different second anti-mistake parts 211, specifically: a third sub-anti-mistake part 211a and a fourth sub-anti-mistake part 211b. In this embodiment, the first sub-foolproof part 111a and the third sub-foolproof part 211a are matched; the second sub-foolproof part 111b and the fourth sub-foolproof part 211b are matched. In some other embodiments, the outer wall of the first housing may have three first foolproof parts 111, and the inner wall of the third housing may have three corresponding second foolproof parts 211. The structure of the three first foolproof parts 111 is not limited; all three may be the same, only two may be the same and the remaining one may be different from the other two, or all three may be different, depending on the actual situation. The first foolproof parts 111 and the second foolproof parts 211 in this embodiment can achieve the foolproof effect when the first housing 110 and the third housing 210 are mated, avoiding mating errors and improving mating efficiency; at the same time, the cooperation between the first foolproof parts 111 and the second foolproof parts 211 in certain structures (e.g., the first sub-foolproof part 111a and the third sub-foolproof part 211a) can also play a guiding role.

[0109] Continue to refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 In some embodiments, the outer wall of the second housing 120 has a first mounting guide structure 121, and the outer wall of the third housing 210 has a second mounting guide structure 212. When the first conductive terminal 130 and the second conductive terminal 220 are electrically connected, the first mounting guide structure 121 and the second mounting guide structure 212 are matched. Specifically, the first mounting guide structure 121 and the second mounting guide structure 212 can be arrows or markings with an indicative function. In this embodiment, the first mounting guide structure 121 and the second mounting guide structure 212 can improve the mating efficiency of the operator when the first electrical connector 100 and the second electrical connector 200 are mated.

[0110] like Figure 14As shown, in some embodiments, the tail 221 of the second conductive terminal 220 is arranged in a regular polygonal pattern. Specifically, one end of the conductive terminal is a contact portion, and the other end is a tail 221, which can also be called a soldering portion or a crimping portion. The tail 221 can be directly soldered to the printed circuit board, soldered to a cable or wire, or crimped to a cable, depending on the actual situation. This disclosure is not limited thereto. In this embodiment, the contact portion of the first conductive terminal 130 is electrically connected to the contact portion of the second conductive terminal 220, and the tail 221 of the second conductive terminal 220 is soldered to the printed circuit board. Further, in this embodiment, the second conductive terminal 220 has no bends, so its tail 221 can be arranged in a regular polygonal pattern on the printed circuit board. In other embodiments, if the second conductive terminal 220 is bent at the contact portion away from the tail 221, the arrangement of the contact portion can be different from the arrangement of the tail 221, and can be adjusted according to the actual situation. This disclosure is not limited thereto.

[0111] The tail of the first conductive terminal 130 can be connected to an external device in various ways, such as soldering to a cable or wire, crimping to a cable or wire, or soldering to a printed circuit board, etc., and this disclosure is not limited thereto. Similarly, the tail 221 of the second conductive terminal 220 can also be connected to an external device in various ways, depending on the implementation. The connection method between the tail of the first conductive terminal 130 and the external device can be the same as or different from the connection method between the tail 221 of the second conductive terminal 220 and the external device, depending on the actual situation.

[0112] Continue to refer to Figure 7 In some embodiments, the second electrical connector 200 has at least one positioning post 280 on the side near the tail 221 of the second conductive terminal 220. The positioning post 280 serves to position the second electrical connector 200 when it is mounted on an external device (such as a printed circuit board). When the second electrical connector 200 has at least two positioning posts 280, and the size and / or position of the at least two positioning posts 280 are different, the positioning posts 280 can also serve to prevent fooling.

[0113] like Figures 2 to 4 , Figure 8 and Figure 9 , Figures 15 to 22As shown, in some embodiments, the electrical connector assembly further includes a first conductor group 400. The first conductor group 400 includes at least one first conductor 410. The first conductor 410 includes a first conductor 411 and a first insulating layer 412 enclosing the first conductor 411. The tail of each first conductive terminal 130 is a first two-stage crimp portion 131, which is crimped to a corresponding first conductor 410, wherein the first stage of the first two-stage crimp portion 131 is crimped to the first conductor 411, and the second stage is crimped to the first insulating layer 412. The inner diameter of the first stage of the first two-stage crimp portion 131 is smaller than the inner diameter of the second stage. Here, crimping refers to applying force from the outer surface of the first stage and the second stage of the first two-stage crimp portion 131 of the first conductive terminal 130 to the inner surface, thereby causing the outer surface to be recessed inward to hold the inner first conductor 411 and the first insulating layer 412. In this embodiment, the contact portion of the first conductive terminal 130 is electrically connected to the contact portion of the second conductive terminal 220, and the tail portion of the first conductive terminal 130 is crimped to the first wire 410.

[0114] like Figures 23 to 25 As shown, in some embodiments, the electrical connector assembly further includes a second conductor group 500. The second conductor group 500 includes at least one second conductor 510. The second conductor 510 includes a second conductor 511 and a second insulating layer 512 enclosing the second conductor 511. The connection method of the second conductor group 500 and the second conductive terminal 220 (not shown in the figure) can be compared with the connection method of the first conductor group 400 and the first conductive terminal 130. Specifically, the tail 221 of each second conductive terminal 220 is a second two-stage crimping portion 222, which is crimped with a corresponding second conductor 510. The first stage of the second two-stage crimping portion 222 is crimped with the second conductor 511, and the second stage is crimped with the second insulating layer 512. The inner diameter of the first stage of the second two-stage crimping portion 222 is smaller than the inner diameter of the second stage. Here, crimping refers to applying force to the inner surface of the first and second segments of the second two-section crimping portion 222 of the second conductive terminal 220, causing the outer surface to be recessed inward to hold the inner second conductor 511 and the second insulating layer 512. In this embodiment, the contact portion of the first conductive terminal 130 is electrically connected to the contact portion of the second conductive terminal 220, and the tail portion 221 of the second conductive terminal 220 is crimped to the second wire 510.

[0115] Continue to refer to Figure 19In some embodiments, the sidewall of the first segment of the first two-section crimping portion 131 has an inspection hole 600 penetrating the sidewall, and / or, the sidewall of the first segment of the second two-section crimping portion 222 has an inspection hole 600 penetrating the sidewall (not shown in the figure). This embodiment, by providing the inspection hole 600, facilitates checking whether the first conductor 411 of the first wire 410 is correctly inserted into the first two-section crimping portion 131, and / or facilitates checking whether the second conductor 511 of the second wire 510 is correctly inserted into the second two-section crimping portion 222.

[0116] like Figures 26 to 28 As shown, in some embodiments, the first housing 110 has a bottom surface 112, from which a terminal connection cavity 700 for accommodating a first conductive terminal 130 is formed, and the sidewall of the terminal connection cavity 700 has an opening 710; and / or, the third housing 210 has a rear surface 213, from which a terminal connection cavity 700 for accommodating a second conductive terminal 220 is formed, and the sidewall of the terminal connection cavity 700 has an opening 710. In some embodiments, the first housing 110 has a plurality of terminal connection cavities 700 arranged circumferentially along the first housing 110, and each terminal connection cavity 700 has an opening 710 located at the outer periphery of the housing. In other embodiments, the third housing 210 has a plurality of terminal connection cavities 700 arranged circumferentially along the third housing 210, and each terminal connection cavity 700 has an opening 710 located at the outer periphery of the housing. An opening 710 is provided in the terminal connection cavity 700 to facilitate inspection of whether the first conductive terminal 130 and / or the second conductive terminal 220 are installed in place.

[0117] Continue to refer to Figure 21 In some embodiments, the end of the first conductive terminal 130 near the bottom surface 112 is located inside the first housing 110 and is not coplanar with the bottom surface 112; and / or, the end of the second conductive terminal 220 near the rear surface 213 is located inside the third housing 210 and is not coplanar with the rear surface 213. This embodiment, through the above-described arrangement of the first conductive terminal 130 and / or the second conductive terminal 220, ensures sufficient creepage distance between the conductive terminals to pass the withstand voltage test.

[0118] Continue to refer to Figure 15 and Figure 16 In some embodiments, the first electrical connector 100 further includes a fourth housing 150. The fourth housing 150 is sleeved around the connection between the first conductive terminal 130 and the first wire 410, improving the holding force and waterproof performance between the first conductive terminal 130 and the first wire 410. In some embodiments, after the first conductive terminal 130 and the first wire 410 are crimped, overmolding can be performed at this connection to form the fourth housing 150.

[0119] Continue to refer to Figures 2 to 5 , Figure 15 In some embodiments, the first electrical connector 100 further includes a sealing ring 160. The sealing ring 160 is fitted onto the outer surface of the first housing 110, which can effectively improve the waterproof performance of the first electrical connector 100 and the second electrical connector 200 after mating.

[0120] Continue to refer to Figures 23 to 24 In some embodiments, the second electrical connector 200 further includes a fifth housing 240 and a sixth housing 250. The fifth housing 240 is sleeved outside the connection between the second conductive terminal 220 and the second wire 510, improving the holding force and waterproof performance at the connection between the second conductive terminal 220 and the second wire 510. The sixth housing 250 is sleeved outside the fifth housing 240, further improving the holding force and waterproof performance at the connection between the second conductive terminal 220 and the second wire 510, thereby improving the structural stability and waterproof performance of the second electrical connector 200.

[0121] Continue to refer to Figures 6 to 8 In some embodiments, the second electrical connector 200 further includes a sealing gasket 260, which is sleeved on the outside of the third housing 210.

[0122] In summary, the electrical connector assembly disclosed herein, when the first electrical connector and the second electrical connector are mated, features a protruding locking structure on the outer side of the second housing near the first housing and a grooved engagement structure on the inner side of the third housing that elastically engages. The locking structure on the first electrical connector can be housed inside the second electrical connector. Compared to the existing latching structure on the outer surface of the electrical connector assembly, this reduces the size of the electrical connector assembly, achieves a smaller size, and increases the versatility of the electrical connector assembly's application scenarios.

[0123] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this disclosure and should not be construed as limiting the specific implementation of this disclosure to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this disclosure, and all such modifications and substitutions should be considered within the scope of protection of this disclosure.

Claims

1. An electrical connector assembly, characterized in that, include: The first electrical connector includes a first housing, a second housing covering one end of the first housing, and a plurality of first conductive terminals located inside the first housing and the second housing. The outer side of the second housing near the end of the first housing has a protruding locking structure; The second electrical connector includes a third housing and a plurality of second conductive terminals located inside the third housing; the inner surface of the third housing has a groove-shaped engagement structure. When the first electrical connector and the second electrical connector are mated, the second housing portion is embedded inside the third housing, and the locking structure and the engagement structure are elastically engaged, and the first conductive terminal is electrically connected to the second conductive terminal.

2. The electrical connector assembly according to claim 1, characterized in that, The elasticity of the second housing is higher than that of the third housing; The locking structure has a compressed state during the engagement process of the locking structure and the connecting structure, and a spring-back state when the engagement of the locking structure and the connecting structure is completed, so as to give the operator a locking feel.

3. The electrical connector assembly according to claim 1, characterized in that, The latching structure is a conical annular protrusion surrounding the outer side of the second housing, and the engaging structure is a conical annular groove surrounding the inner side of the third housing.

4. The electrical connector assembly according to claim 3, characterized in that, The locking structure includes, in sequence along the direction away from the first housing: a first inclined surface and an extension surface that are inclined outward toward the second housing; The joining structure includes, in sequence along the direction away from the mating surface of the second electrical connector: a guide surface, a second inclined surface inclined to the outside of the third housing, and a third inclined surface inclined to the inside of the third housing; A tapered protrusion is formed between the first inclined surface and the extended surface to embed the engagement structure, and a tapered groove is formed between the second inclined surface and the third inclined surface to accommodate the locking structure.

5. The electrical connector assembly according to claim 4, characterized in that, The angle of the conical protrusion is less than or equal to the angle of the conical groove.

6. The electrical connector assembly according to claim 4, characterized in that, The locking structure further includes an arc-shaped guide surface between the first inclined surface and the extended surface, and the guide surface contacts the conical groove of the engaging structure.

7. The electrical connector assembly according to claim 4, characterized in that, The extension surface is perpendicular to the mating insertion direction of the first electrical connector and the second electrical connector.

8. The electrical connector assembly according to claim 4, characterized in that, The inner diameter of the third housing at the guide surface gradually decreases along the direction of the guide surface closer to the second inclined surface. A tapered protrusion is formed between the guide surface and the second inclined surface. The tapered protrusion and the tapered groove of the engagement structure cooperate to engage the locking structure.

9. The electrical connector assembly according to claim 1, characterized in that, The outer wall of the first housing has at least one first anti-mistake part, and the inner wall of the third housing has at least one second anti-mistake part. When the first conductive terminal is electrically connected to the second conductive terminal, the first anti-mistake part and the second anti-mistake part match.

10. The electrical connector assembly according to claim 1, characterized in that, The outer wall of the second housing has a first mounting guide structure, and the outer wall of the third housing has a second mounting guide structure. When the first conductive terminal is electrically connected to the second conductive terminal, the first mounting guide structure and the second mounting guide structure are matched.

11. The electrical connector assembly according to claim 1, characterized in that, The tail of the second conductive terminal is arranged in a regular polygon.

12. The electrical connector assembly according to claim 1, characterized in that, Also includes: A first conductor group, the first conductor group including at least one first conductor, the first conductor including a first conductor and a first insulating layer covering the first conductor; Each of the first conductive terminals has a first two-section crimp portion and is crimped to a corresponding first wire, wherein the first section of the first two-section crimp portion is crimped to the first conductor and the second section is crimped to the first insulating layer.

13. The electrical connector assembly according to claim 12, characterized in that, Also includes: The second conductor group includes at least one second conductor, the second conductor including a second conductor and a second insulating layer covering the second conductor; Each of the second conductive terminals has a second two-section crimping portion and is crimped to a corresponding second wire, wherein the first section of the second two-section crimping portion is crimped to the second conductor and the second section is crimped to the second insulating layer.

14. The electrical connector assembly according to claim 13, characterized in that, The first section of the first two-section crimped part has an inspection hole penetrating through the side wall; and / or The sidewall of the first section of the second two-section crimping part has an inspection hole that penetrates the sidewall.

15. The electrical connector assembly according to claim 1, characterized in that, The first housing has a bottom surface, from which a terminal connection cavity for accommodating the first conductive terminal is formed, and the side wall of the terminal connection cavity has an opening; and / or The third housing has a rear end, from which a terminal connection cavity for accommodating the second conductive terminal is provided, and the sidewall of the terminal connection cavity has an opening.

16. The electrical connector assembly according to claim 15, characterized in that, The end of the first conductive terminal near the bottom surface is located inside the first housing and is not coplanar with the bottom surface; and / or The end of the second conductive terminal near the rear is located inside the third housing and is not coplanar with the rear.

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