Self-adaptive plugging connector and connecting assembly

Abstract

The invention relates to the field of connectors, in particular to a self-adaptive plug connector and a connecting assembly.The self-adaptive plug connector comprises a shell, a mounting hole is formed in the shell, and a plug terminal and a wiring terminal are mounted in the mounting hole in a penetrating mode; axial positioning structures are arranged between the plugging terminal and the mounting hole and between the wiring terminal and the mounting hole so as to prevent the wiring terminal from being separated from the mounting hole, at least a preset radial movement gap is formed between the plugging terminal and the mounting hole, and a variable axial distance is formed between the plugging terminal and the wiring terminal. A conductive adapter is arranged between the plugging terminal and the wiring terminal, the conductive adapter keeps continuous electric connection with the plugging terminal and the wiring terminal when the plugging terminal and the wiring terminal generate relative displacement, and one end of the plugging terminal facing the matching terminal is provided with a guide inclined plane for guiding the matching terminal to be plugged with the plugging terminal. According to the invention, plug-in can be smoothly completed under the condition that installation tolerance exists, and the plug-in connector has self-adaptive capability.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and more specifically, to an adaptive plug connector and a connection assembly. Background Art

[0002] As new energy vehicle technology becomes more mature, the layout of electric modules becomes more and more compact. The method of connecting two electric modules that are close to each other using a wire harness cannot meet the compact layout of the current vehicle. However, the two electric modules are plugged in through a pre-installed connector. Although the wire harness is omitted, the installation tolerance between the two electric modules needs to be eliminated as much as possible so that the pre-installed connector can be plugged in normally. However, it is difficult to correct the above installation tolerance in actual production and processing, which affects production efficiency and production costs. Therefore, it is necessary to develop a connector that can still achieve smooth plugging and normal operation within a certain installation tolerance. Summary of the invention

[0003] The present invention provides an adaptive plug connector and a connection assembly to solve the problem that the existing connector cannot be smoothly plugged in when there is an installation tolerance.

[0004] The present invention provides an adaptive plug connector, which is used for plugging and electrically connecting with a mating terminal on an electrical module, and comprises a shell, wherein a mounting hole penetrating along the plugging direction is provided in the shell, and a plug terminal and a wiring terminal distributed along the insertion direction of the mating terminal are installed in the mounting hole, and an axial positioning structure is provided between the plug terminal and the wiring terminal and the mounting hole to prevent the plug terminal from slipping out of the mounting hole, at least a predetermined radial movement gap is provided between the plug terminal and the mounting hole, and a variable axial spacing is provided between the plug terminal and the wiring terminal; a conductive adapter conductively connected to the plug terminal and the wiring terminal is provided between the opposite end surfaces of the plug terminal and the wiring terminal, and the conductive adapter maintains continuous electrical connection with the plug terminal and the wiring terminal when the plug terminal and the wiring terminal are relatively displaced; a guiding inclined surface is provided at one end of the plug terminal facing the mating terminal to guide the mating terminal to be plugged into the plug terminal, and when the mating terminal is radially misaligned with the plug terminal and plugged into the plug terminal, the end of the mating terminal is pressed and matched with the guiding inclined surface to drive the plug terminal to move radially until the plug terminal and the mating terminal are correspondingly plugged.

[0005] Optionally, the conductive adapter is a transfer spring, which includes a base and a plurality of spring claws, one end of the spring claw is fixedly connected to the base and the other end is a free end, the base is conductively connected to the end face of the wiring terminal facing the plug-in terminal, the spring claw has a first bending portion and a predetermined axial distance between the first bending portion and the plane where the base is located, the first bending portion abuts and is conductively connected to the end face of the plug-in terminal facing the wiring terminal.

[0006] Optionally, a receiving groove is provided on the end surface of the wiring terminal facing the plug-in terminal, and the base is embedded in the receiving groove to achieve conductive connection and radial positioning.

[0007] Optionally, the spring claw further has a second bent portion, which abuts and fits with the end surface of the connecting terminal facing the plug-in terminal and is conductively connected.

[0008] Optionally, a plurality of receiving holes are distributed on the base around the axis of the mounting hole, one end of the spring claw is fixedly connected to the inner wall of the corresponding receiving hole, and the other end extends into the receiving hole.

[0009] Optionally, the spring claws include a plurality of first spring claws and a plurality of second spring claws, wherein one end of the plurality of first spring claws is fixedly connected to the outer end of the corresponding receiving hole and the other end extends toward the inner end of the receiving hole, and one end of the plurality of second spring claws is fixedly connected to the inner end of the corresponding receiving hole and the other end extends toward the outer end of the receiving hole.

[0010] Optionally, the receiving hole is fan-shaped, and the first spring claw and the second spring claw both extend in the radial direction.

[0011] Optionally, the first spring claws and the second spring claws are alternately distributed in the circumferential direction.

[0012] Optionally, the mounting hole comprises a first mounting hole and a second mounting hole connected in sequence, the diameter of the second mounting hole is larger than that of the first mounting hole, there is a predetermined radial movement gap between the plug-in terminal and the second mounting hole, the wiring terminal is gap-matched with the first mounting hole and a sealing ring is provided between the two.

[0013] Optionally, a step structure is provided between the first mounting hole and the second mounting hole, and a flange is provided on the outer side of the end of the wiring terminal facing the plug-in terminal, and the flange cooperates with the step structure to form an axial positioning structure between the wiring terminal and the mounting hole, and a stop edge is detachably provided on the end of the second mounting hole facing the mating terminal, and the stop edge cooperates with the end of the plug-in terminal facing the mating terminal to form an axial positioning structure between the plug-in terminal and the mounting hole.

[0014] Optionally, the plug-in terminal includes a body and an insulating shell covering the outer periphery of the body, the end of the body facing the mating terminal is provided with a plug-in hole for plugging with the mating terminal, the end of the insulating shell facing the mating terminal is engaged with the stop edge structure and is provided with the guide slope.

[0015] Optionally, an end of the insulating shell facing the mating terminal is provided with a flared structure around the plug-in hole, with one end facing the mating terminal being larger and the other end being smaller, and an inner wall of the flared structure constitutes the guiding slope.

[0016] Optionally, a plurality of outwardly protruding limiting bosses for limiting the radial movement range of the plug-in terminal are provided on the outer peripheral wall of the insulating shell.

[0017] Optionally, a cover shell is detachably connected to one end of the shell facing the mating terminal, a through hole is provided in the cover shell at a position corresponding to the mounting hole, and an edge of the through hole cooperates with an end of the plug-in terminal facing the mating terminal to form the stop edge.

[0018] Optionally, the cover shell and the housing are connected via a snap-fit ​​structure to achieve a detachable connection.

[0019] Optionally, an elastic member which is accommodated in the radial movement gap and has radial elasticity is provided in the mounting hole, and the inner side of the elastic member elastically abuts against the outer side wall of the plug-in terminal.

[0020] Optionally, the elastic member is a crown spring inserted into the mounting hole, and the crown spring is electrically insulated from at least one of the mounting hole and the plug-in terminal.

[0021] Optionally, the crown spring includes two axially spaced ring bodies and a plurality of spring wires, the two ends of the plurality of spring wires are respectively fixedly connected to the corresponding ring bodies and are provided with at least one inwardly bent portion, the bent portion elastically abuts against the outer side wall of the plug-in terminal, and the ring body radially abuts against the inner wall of the mounting hole.

[0022] The present invention also provides a connection assembly, comprising a mating cable, a mating terminal, a connecting cable and the adaptive plug connector as described above; the mating cable and the mating terminal are arranged on one electrical module, and the end of the mating cable is electrically connected to the mating terminal; the adaptive plug connector and the connecting cable are arranged on another electrical module, and the end of the connecting cable is electrically connected to the wiring terminal; the mating terminal and the wiring terminal are conductively connected via the plug terminal and the conductive adapter to achieve electrical connection between the two electrical modules.

[0023] The present invention has at least the following beneficial effects:

[0024] Due to the existence of installation tolerance, radial misalignment occurs between the mating terminal and the plug-in terminal. In the present invention, when the mating terminal is inserted into the plug-in terminal, the end of the mating terminal is squeezed and matched with the guiding bevel to drive the plug-in terminal to move radially until the plug-in terminal and the mating terminal are plugged in correspondingly, that is, the plug-in terminal can at least move adaptively in the radial direction to correctly plug with the misaligned mating terminal, and the plug-in terminal and the wiring terminal can maintain conductive connection through the conductive adapter during the movement, so that the adaptive plug-in connector of the present invention can smoothly complete the plug-in in the presence of installation tolerance, has adaptive capability, does not require manual intervention and adjustment, saves time and effort, and is suitable for connecting two electrical modules that are close to each other.

[0025] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0027] Figure 1 is a structural schematic diagram of a first electrical module;

[0028] Figure 2 is a structural schematic diagram of a second electrical module;

[0029] Figure 3 is a schematic diagram of the assembly state of the connection components;

[0030] Figure 4 It is a schematic diagram of the exploded structure of the connection assembly (the connection cables are not shown);

[0031] Figure 5 is a schematic diagram of the cross-section structure of the connection assembly (connection cables are not shown);

[0032] Figure 6 is a schematic diagram of the structure of an adaptive plug connector;

[0033] Figure 7 It is a schematic diagram of the exploded structure of the terminal block and the transfer spring;

[0034] Figure 8 It is a structural schematic diagram of the transfer reed;

[0035] Fig. 9 It is a schematic diagram of the cross-section structure of the transfer reed;

[0036] Fig.10 It is a structural schematic diagram of the plug-in terminal;

[0037] Fig.11 It is a structural schematic diagram of the main body of the plug-in terminal;

[0038] Fig.12 This is a schematic diagram of the structure of the crown spring.

[0039] The following are marked in the figure:

[0040] 1. First electrical module; 11. Matching cables; 12. Matching terminals;

[0041] 2. Second electrical module; 21. Adaptive plug connector; 22. Connecting cable;

[0042] 211, housing; 2111, mounting hole; 2112, first mounting hole; 2113, second mounting hole; 2114, step structure; 2115, card table;

[0043] 212, cover shell; 2121, through hole; 2122, stop edge; 2123, slot;

[0044] 213, plug-in terminal; 2131, insulating shell; 21311, guiding slope; 21312, limiting boss; 21313, flaring structure; 2132, body; 2133, conductive spring;

[0045] 214, crown spring; 2141, ring body; 2142, spring wire; 21421, bending portion; 21422, reverse bending portion;

[0046] 215, transfer spring; 2151, base; 2152, receiving hole; 2153, first spring claw; 2154, second spring claw; 2155, first bending portion; 2156, second bending portion;

[0047] 216, terminal block; 2161, receiving slot; 2162, flange;

[0048] 217. Sealing ring. DETAILED DESCRIPTION

[0049] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0050] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0051] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0052] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0053] like Figure 1-12As shown, an embodiment of the present invention relates to an adaptive plug connector, which is used to be plugged and electrically connected to a mating terminal 12 on an electrical module, namely, a first electrical module 1. The adaptive plug connector 21 includes a housing 211, and a mounting hole 2111 is provided in the housing 211 and penetrates along the plugging direction. The mounting hole 2111 is penetrated by plug terminals 213 and wiring terminals 216 distributed along the insertion direction of the mating terminal 12. An axial positioning structure is provided between the plug terminals 213 and the wiring terminals 216 and the mounting hole 2111 to prevent them from slipping out of the mounting hole 2111. Among the plug terminals 213 and the wiring terminals 216, at least the plug terminals 213 and the mounting hole 2111 have a predetermined radial movement gap L1 (such as Figure 5 As shown), and there is a variable axial spacing L2 between the plug terminal 213 and the wiring terminal 216 (as shown Figure 5 Specifically in this embodiment, only an effective radial movement gap L1 is defined between the plug-in terminal 213 and the mounting hole 2111 .

[0054] A conductive adapter conductively connected to the plug-in terminal 213 and the wiring terminal 216 is disposed between the opposite end surfaces of the plug-in terminal 213 and the wiring terminal 216 . The conductive adapter maintains a continuous electrical connection with the plug-in terminal 213 and the wiring terminal 216 when the plug-in terminal 213 and the wiring terminal 216 are relatively displaced.

[0055] One end of the plug-in terminal 213 facing the mating terminal 12 is provided with a guiding inclined surface 21311 for guiding the mating terminal 12 to be plugged into the plug-in terminal 213. When the mating terminal 12 is radially misaligned with the plug-in terminal 213 and plugged into the plug-in terminal 213, the end of the mating terminal 12 is squeezed and matched with the guiding inclined surface 21311 to drive the plug-in terminal 213 to move radially until the plug-in terminal 213 is correspondingly plugged into the mating terminal 12.

[0056] In actual installation, due to the existence of installation tolerance, radial misalignment may occur between the mating terminal 12 and the plug-in terminal 213. When the mating terminal 12 is inserted into the plug-in terminal 213, the end of the mating terminal 12 is squeezed and matched with the guide bevel 21311 to drive the plug-in terminal 213 to move radially until the plug-in terminal 213 is correspondingly plugged into the mating terminal 12. That is, the plug-in terminal 213 can at least move adaptively in the radial direction to correctly plug into the misaligned mating terminal 12, and the plug-in terminal 213 and the wiring terminal 216 can maintain conductive connection through the conductive adapter during movement. Therefore, the adaptive plug-in connector 21 can smoothly complete the plug-in in the presence of installation tolerance, has adaptive capability, does not require manual intervention and adjustment, saves time and effort, and is suitable for connecting two electrical modules that are close to each other.

[0057] Furthermore, in order to ensure good connection between the conductive adapter and the opposite end faces of the plug terminal 213 and the wiring terminal 216, as shown in FIG. Figure 4 , 5and Figure 7-9 As shown, in this embodiment, the conductive adapter is a transfer spring 215, which includes a base 2151 and a plurality of spring claws, one end of which is fixedly connected to the base 2151 and the other end is a free end, the base 2151 is conductively connected to the end surface of the terminal 216 facing the plug-in terminal 213, the spring claw has a first bent portion 2155, and there is a predetermined axial distance L3 (such as Fig. 9 As shown in the figure, the first bent portion 2155 abuts and matches with the end face of the plug-in terminal 213 facing the wiring terminal 216 and is conductively connected. At the same time, the conductive adapter in this embodiment is located between the plug-in terminal 213 and the wiring terminal 216, and there is a predetermined axial distance L3 between the first bent portion 2155 of the spring claw and the plane where the base 2151 is located. Therefore, the spring claw can actually elastically support the plug-in terminal 213, so that there is a variable axial spacing L2 between the plug-in terminal 213 and the wiring terminal 216. The plug-in terminal 213 is substantially floatingly arranged relative to the wiring terminal 216, and the floating can be radially or axially. However, considering the stability of the plug-in terminal 213 in the mounting hole 2111, the above-mentioned axial spacing L2 is preferably smaller than the radial movement gap L1. In this embodiment, the axial spacing L2 is smaller, so that there is only a small gap between the plug-in terminal 213 and the wiring terminal 216, so as not to affect the radial movement of the plug-in terminal 213.

[0058] In other embodiments, the conductive adapter may also use other parts in the prior art that can achieve the predetermined effect, such as a wave spring, which is arranged between the plug-in terminal and the wiring terminal to maintain continuous contact and conductivity between the plug-in terminal and the wiring terminal when the plug-in terminal and the wiring terminal undergo relative displacement.

[0059] Furthermore, in order to prevent the conductive adapter from shaking and shifting, Figure 5 , 7 As shown, in this embodiment, a receiving groove 2161 is provided on the end surface of the connecting terminal 216 facing the plug-in terminal 213, and the base 2151 is embedded in the receiving groove 2161 to achieve conductive connection and radial positioning, and the first bent portion 2155 of the spring claw extends out of the receiving groove 2161 to ensure that the above-mentioned small gap, i.e., the axial spacing L2, is present between the plug-in terminal 213 and the connecting terminal 216.

[0060] Furthermore, in order to optimize and improve the conductivity and elasticity of the conductive adapter and the spring claw, as Fig. 9As shown, in this embodiment, there are two first bending portions 2155, and the spring claw also has a second bending portion 2156, which is located between the two first bending portions 2155. The second bending portion 2156 abuts and fits with the end surface of the connecting terminal 216 facing the plug-in terminal 213 and is conductively connected, that is, the second bending portion 2156 abuts and fits with the bottom of the receiving groove 2161 and is conductively connected.

[0061] Furthermore, in order to optimize the layout of the spring claws and ensure that each spring claw can still be well electrically connected to the plug-in terminal 213 when the plug-in terminal 213 moves radially, as shown in FIG. Figure 8 As shown, in this embodiment, a plurality of receiving holes 2152 are distributed on the base 2151 around the axis of the mounting hole 2111 , one end of the spring claw is fixedly connected to the inner wall of the corresponding receiving hole 2152 , and the other end extends into the receiving hole 2152 .

[0062] In order to further ensure good conductive connection between the spring claw and the plug terminal 213, as Figure 8 As shown, in this embodiment, the spring claws include a plurality of first spring claws 2153 and a plurality of second spring claws 2154, each of the first spring claws 2153 and the second spring claws 2154 has two first bending portions 2155 and one second bending portion 2156, one end of the plurality of first spring claws 2153 is fixedly connected to the outer end of the corresponding receiving hole 2152, and the other end extends toward the inner end of the receiving hole 2152, and one end of the plurality of second spring claws 2154 is fixedly connected to the inner end of the corresponding receiving hole 2152, and the other end extends toward the outer end of the receiving hole 2152.

[0063] Considering that more spring claws can be set, such as Figure 8 As shown, in this embodiment, the receiving hole 2152 is fan-shaped, and the first spring claw 2153 and the second spring claw 2154 both extend in the radial direction.

[0064] In order to ensure a good conductive connection between the spring claw and the plug terminal 213 to the greatest extent, the spring claw is evenly distributed, such as Figure 8 As shown, in this embodiment, the first spring claws 2153 and the second spring claws 2154 are alternately distributed in the circumferential direction.

[0065] In other embodiments, the receiving hole may also be adaptively configured to be in a rectangular, trapezoidal or other shape, depending on actual needs.

[0066] Furthermore, in order to make the plug-in terminal 213, the wiring terminal 216 and the mounting hole 2111 more compatible, as shown in FIG. Figure 4 , 5As shown, in this embodiment, the mounting hole 2111 includes a first mounting hole 2112 and a second mounting hole 2113 connected in sequence, the diameter of the second mounting hole 2113 is larger than that of the first mounting hole 2112, and there is a predetermined radial movement gap L1 between the plug-in terminal 213 and the second mounting hole 2113, the wiring terminal 216 is gap-matched with the first mounting hole 2112 and a sealing ring 217 is provided between the two, and the sealing ring 217 is installed on the outer periphery of the wiring terminal 216.

[0067] Furthermore, considering the requirements for simpler and more efficient structure and assembly, such as Figure 5 As shown, in this embodiment, a step structure 2114 is provided between the first mounting hole 2112 and the second mounting hole 2113, and a flange 2162 is provided on the outer side of the end of the connecting terminal 216 facing the plug-in terminal 213, and the flange 2162 cooperates with the step structure 2114 to form an axial positioning structure between the connecting terminal 216 and the mounting hole 2111, and a stop edge 2122 is detachably provided on the end of the second mounting hole 2113 facing the mating terminal 12, and the stop edge 2122 cooperates with the end of the plug-in terminal 213 facing the mating terminal 12 to form an axial positioning structure between the plug-in terminal 213 and the mounting hole 2111.

[0068] Further, considering increasing the insulation performance of the plug terminal 213, as Figure 4 , 5 As shown in Figures 10 and 11, in the present embodiment, the plug-in terminal 213 includes a main body 2132 and an insulating shell 2131 covering the outer periphery of the main body 2132. The insulating shell 2131 can be integrally injection molded with the main body 2132, or the main body 2132 can be inserted and fixed into the insulating shell 2131. The end of the main body 2132 facing the mating terminal 12 is provided with a plug-in hole for plugging with the mating terminal 12. The end of the insulating shell 2131 facing the mating terminal 12 is engaged with the retaining edge 2122 structure and is provided with the above-mentioned guide slope 21311. In addition, in order to ensure good conductivity between the plug-in terminal 213 and the mating terminal 12, a conductive spring 2133 for conductive connection with the mating terminal 12 is also assembled in the plug-in hole. The conductive spring 2133 is a conductive spring adapted in the prior art and belongs to the existing mature technology, so it is not repeated here.

[0069] Specifically, Figure 5 , 6 As shown in Figure 10, in this embodiment, an end of the insulating shell 2131 facing the mating terminal 12 is provided with a flared structure 21313 around the plug-in hole, with one end facing the mating terminal 12 being large and the other end being small. The inner wall of the flared structure 21313 constitutes the above-mentioned guide slope 21311, so that the guide slope 21311 can guide the mating terminal 12 to be inserted into the plug-in hole at any position in the circumferential direction, and the guiding effect is excellent.

[0070] Furthermore, in order to limit the radial movement range of the plug-in terminal 213, a plurality of outwardly protruding limiting bosses 21312 for limiting the radial movement range of the plug-in terminal 213 are provided on the outer peripheral wall of the insulating shell 2131. Fig.10 As shown, in this embodiment, there are four limiting bosses 21312 and they are evenly distributed along the circumferential direction on the outer wall of the insulating shell 2131. The protrusion heights of each limiting boss 21312 are consistent. At the same time, in order to strengthen the blocking cooperation between the insulating shell 2131 and the retaining edge 2122 and avoid assembly interference with the crown spring 214 described below, the limiting boss 21312 in this embodiment is located at one end of the outer wall of the insulating shell 2131 close to the mating terminal 12.

[0071] Furthermore, in order to realize the detachability of the retaining edge 2122, it is convenient to assemble the plug-in terminal 213, the wiring terminal 216 and other parts in the mounting hole 2111. Figure 4-6 As shown, in this embodiment, the end of the shell 211 facing the mating terminal 12 is detachably connected to the cover shell 212, and the cover shell 212 is provided with a through hole 2121 at the position corresponding to the mounting hole 2111, and the edge of the through hole 2121 cooperates with the end of the plug-in terminal 213 facing the mating terminal 12 to form a stop edge 2122.

[0072] Specifically, Figure 6 As shown, in this embodiment, the cover shell 212 and the shell 211 are connected via a snap-fit ​​structure to achieve a detachable connection. The snap-fit ​​structure includes a snap-fit ​​groove 2123 on the cover shell 212 and a snap-fit ​​platform 2115 on the shell 211 .

[0073] In other embodiments, the cover and the housing may also be detachably connected by other conventional detachable structures such as a bolt structure.

[0074] Furthermore, in order to keep the plug-in terminal 213 in the center of the second mounting hole 21132111 when not plugged in with the mating terminal 12, the plug-in terminal 213 can return to the center of the second mounting hole 2113 after being released from the mating terminal 12, so as to ensure that the next plug-in can be carried out smoothly. Figure 4 , 5 As shown in Figures 12, in this embodiment, an elastic member with radial elasticity and housed in the radial movement gap L1 is provided in the mounting hole 2111, specifically the second mounting hole 2113. The inner side of the elastic member elastically abuts against the outer side wall of the plug-in terminal 213, and the outer side of the elastic member abuts against the inner wall of the second mounting hole 2113.

[0075] Specifically, in order to make the elastic member have elasticity to the plug-in terminal 213 at any position in the circumferential direction and to make the elastic member have excellent elastic deformation ability, such as Figure 4 , 5As shown in Figures 1 and 12, in this embodiment, the elastic member is a crown spring 214 installed in the mounting hole 2111. The crown spring 214 is made of metal to have a predetermined elastic deformation ability. The crown spring 214 is electrically insulated from at least one of the mounting hole 2111 (specifically the second mounting hole 2113) and the plug-in terminal 213. In this embodiment, since the shell 211 is made of insulating material, the outer side cover of the body 2132 in the plug-in terminal 213 is provided with an insulating shell 2131, so the crown spring 214 is actually electrically insulated from the second mounting hole 2113 and the plug-in terminal 213.

[0076] As a preferred structural solution, Figure 5 , 12 As shown, in this embodiment, the crown spring 214 includes two ring bodies 2141 axially spaced apart and a plurality of spring wires 2142. The two ends of the plurality of spring wires 2142 are respectively fixedly connected to the corresponding ring bodies 2141 and are provided with at least one inwardly bent portion 21421. The bent portion 21421 elastically abuts against the outer wall of the plug-in terminal 213. The ring body 2141 radially abuts against the inner wall of the mounting hole 2111, specifically the second mounting hole 2113. In this embodiment, each spring wire 2142 is provided with two bent portions 21421. A reverse bent portion 21422 is provided between the two bent portions 21421, which bends outward and abuts against the inner wall of the second mounting hole 2113, so as to enhance the elastic deformation capacity of the spring wire 2142.

[0077] In fact, the crown spring 214 can also directly select the existing crown spring (or spring leaf, conductive spring leaf) with the radial elastic deformation function of the elastic member. It only needs to be noted that the size of the crown spring and the radial elastic deformation distance need to be adapted to the present solution. Directly selecting the existing crown spring can also reduce product design and manufacturing costs. At the same time, it should be understood that in the present solution, the crown spring is selected as the elastic member, not to utilize the conductive ability of the crown spring in terminal insertion known to those skilled in the art, but to utilize the radial elastic ability of the crown spring. In the present solution, the conductive ability of the crown spring is avoided. The present solution also makes full use of the convenience of the crown spring being directly selected from existing materials. The above introduction to the crown spring is something that cannot be directly obtained by those skilled in the art with conventional techniques and ideas. It belongs to the technology transfer for different usage scenarios and constitutes one of the design highlights of the present solution.

[0078] In other embodiments, the elastic member may also be other devices with radial elasticity, such as a rubber ring with sufficient elasticity that is inserted into the outer peripheral wall of the plug-in terminal, and the inner and outer sides of the rubber ring are elastically abutted against the outer peripheral wall of the plug-in terminal and the inner wall of the second mounting hole respectively. This solution is easy to obtain and implement by conventional technology, so it will not be repeated here.

[0079] An embodiment of the present invention also relates to a connection assembly, including a mating cable 11, a mating terminal 12, a connecting cable 22 and the adaptive plug connector 21 as described above; the mating cable 11 and the mating terminal 12 are arranged on an electrical module, namely the first electrical module 1, and the end of the mating cable 11 is electrically connected to the mating terminal 12; the adaptive plug connector 21 and the connecting cable 22 are arranged on another electrical module, namely the second electrical module 2, and the end of the connecting cable 22 is electrically connected to the wiring terminal 216; the mating terminal 12 and the wiring terminal 216 are conductively connected through the plug terminal 213 and the conductive adapter to achieve electrical connection between the two electrical modules.

[0080] The following describes a schematic assembly process of the adaptive plug connector 21 and the connection components:

[0081] 1. Install the transfer spring 215 into the receiving groove 2161 of the connecting terminal 216, and then install the connecting terminal 216 into the first mounting hole 2112 until the flange 2162 of the connecting terminal 216 is stopped and matched with the step structure 2114.

[0082] 2. Install the crown spring 214 into the second mounting hole 2113, and then install the plug-in terminal 213 equipped with the conductive spring sheet 2133 into the second mounting hole 2113. The crown spring 214 is located between the outer wall of the plug-in terminal 213 and the inner wall of the second mounting hole 2113. The plug-in terminal 213 is electrically connected to the wiring terminal 216 through the adapter spring sheet 215.

[0083] 3. Connect the cover shell 212 to the housing 211 , and the retaining edge 2122 is engaged with the insulating shell 2131 and the limiting boss 21312 of the plug-in terminal 213 , thereby completing the assembly of the adaptive plug-in connector 21 .

[0084] 4. The adaptive plug connector 21 is fixedly installed on the second electrical module 2 by means of a bolt structure, and then the connecting cable 22 is fixedly connected to the connecting terminal 216 . The connecting cable 22 can be electrically connected to the electrical equipment in the second electrical module 2 .

[0085] 5. The mating cable 11 in the first electrical module 1 is fixedly connected to the mating terminal 12. The mating cable 11 can be electrically connected to the electrical equipment in the first electrical module 1. Then, according to the actual situation, the two electrical modules are brought close to each other or the mating cable 11 is swung so that the mating terminal 12 is plugged into the plug-in terminal 213. Due to the existence of installation tolerance, the mating terminal 12 and the plug-in terminal 213 may be radially misaligned. The end of the mating terminal 12 is squeezed and matched with the guide bevel 21311 to drive the plug-in terminal 213 to move radially until the plug-in terminal 213 is correspondingly plugged with the mating terminal 12. The mating terminal 12 and the wiring terminal 216 are conductively connected through the plug-in terminal 213 and the transfer spring 215, and finally the electrical connection of the two electrical modules is realized.

[0086] The above assembly process is only an example. It can be assembled flexibly according to the actual operation needs.

[0087] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An adaptive plug connector, used for plugging and electrically connecting with a mating terminal on an electrical module, characterized in that: The invention comprises a housing, wherein a mounting hole is provided in the housing and penetrates along the plugging direction, wherein plug terminals and wiring terminals are installed in the mounting hole and are distributed along the insertion direction of the mating terminal, wherein an axial positioning structure is provided between the plug terminals and the wiring terminals and the mounting hole to prevent the plug terminals from slipping out of the mounting hole, wherein at least a predetermined radial movement gap is provided between the plug terminals and the mounting hole, and a variable axial spacing is provided between the plug terminals and the wiring terminals; A conductive adapter is provided between the opposite end faces of the plug-in terminal and the wiring terminal, and is conductively connected to both of them. When the plug-in terminal and the wiring terminal are relatively displaced, the conductive adapter maintains continuous electrical connection with both of them. One end of the plug-in terminal facing the mating terminal is provided with a guiding inclined surface for guiding the mating terminal to be plugged into the plug-in terminal. When the mating terminal is radially misaligned with the plug-in terminal and plugged into the plug-in terminal, the end of the mating terminal is pressed and matched with the guiding inclined surface to drive the plug-in terminal to move radially until the plug-in terminal is correspondingly plugged into the mating terminal.

2. An adaptive plug connector according to claim 1, characterized in that: The conductive adapter is a transfer spring sheet, which includes a base and a plurality of spring claws, one end of the spring claw is fixedly connected to the base and the other end is a free end, the base is conductively connected to the end face of the wiring terminal facing the plug-in terminal, the spring claw has a first bending portion and a predetermined axial distance between the first bending portion and the plane where the base is located, the first bending portion abuts and cooperates with the end face of the plug-in terminal facing the wiring terminal and is conductively connected.

3. An adaptive plug connector according to claim 2, characterized in that: The end surface of the wiring terminal facing the plug-in terminal is provided with a receiving groove, and the base body is embedded in the receiving groove to achieve conductive connection and radial positioning.

4. An adaptive plug connector according to claim 2, characterized in that: The spring claw also has a second bent portion, which is abutted and matched with the end surface of the connecting terminal facing the plug-in terminal and is conductively connected.

5. An adaptive plug connector according to claim 4, characterized in that: A plurality of receiving holes are distributed on the base around the axis of the mounting hole. One end of the spring claw is fixedly connected to the inner wall of the corresponding receiving hole, and the other end extends into the receiving hole.

6. An adaptive plug connector according to claim 5, characterized in that: The spring claws include a plurality of first spring claws and a plurality of second spring claws, wherein one end of the plurality of first spring claws is fixedly connected to the outer end of the corresponding receiving hole and the other end extends toward the inner end of the receiving hole, and one end of the plurality of second spring claws is fixedly connected to the inner end of the corresponding receiving hole and the other end extends toward the outer end of the receiving hole.

7. An adaptive plug connector according to claim 6, characterized in that: The receiving hole is in a fan-shaped ring shape, and the first spring claw and the second spring claw both extend in the radial direction.

8. An adaptive plug connector according to claim 6, characterized in that: The first spring claws and the second spring claws are alternately distributed in the circumferential direction.

9. The adaptive plug connector according to claim 1, characterized in that: The mounting hole comprises a first mounting hole and a second mounting hole connected in sequence, the diameter of the second mounting hole is larger than the first mounting hole, a predetermined radial movement gap is provided between the plug-in terminal and the second mounting hole, the wiring terminal is gap-matched with the first mounting hole and a sealing ring is provided between the two.

10. An adaptive plug connector according to claim 9, characterized in that: A step structure is provided between the first mounting hole and the second mounting hole, a flange is provided on the outer side of one end of the wiring terminal facing the plug-in terminal, the flange cooperates with the step structure to form an axial positioning structure between the wiring terminal and the mounting hole, and a stop edge is detachably provided on one end of the second mounting hole facing the mating terminal, the stop edge cooperates with one end of the plug-in terminal facing the mating terminal to form an axial positioning structure between the plug-in terminal and the mounting hole.

11. An adaptive plug connector according to claim 10, characterized in that: The plug-in terminal comprises a body and an insulating shell covering the outer periphery of the body, the end of the body facing the mating terminal is provided with a plug-in hole for plugging with the mating terminal, the end of the insulating shell facing the mating terminal is matched with the stop edge structure and is provided with the guiding slope.

12. An adaptive plug connector according to claim 11, characterized in that: The end of the insulating shell facing the mating terminal is provided with a flared structure around the plug-in hole, with one end facing the mating terminal being large and the other end being small, and the inner wall of the flared structure constitutes the guiding slope.

13. The adaptive plug connector according to claim 11, characterized in that: A plurality of outwardly protruding limiting bosses for limiting the radial movement range of the plug-in terminal are arranged on the outer peripheral wall of the insulating shell.

14. The adaptive plug connector according to claim 10, characterized in that: The end of the shell facing the mating terminal is detachably connected with a cover shell, and the cover shell is provided with a through hole at a position corresponding to the mounting hole, and the edge of the through hole is matched with the end of the plug-in terminal facing the mating terminal to form the stop edge.

15. An adaptive plug connector according to claim 14, characterized in that: The cover shell is connected to the housing through a snap-fit ​​structure to achieve a detachable connection.

16. The adaptive plug connector according to claim 1, characterized in that: An elastic member which is accommodated in the radial movement gap and has radial elasticity is arranged in the mounting hole, and the inner side of the elastic member elastically abuts against the outer side wall of the plug-in terminal.

17. An adaptive plug connector according to claim 16, characterized in that: The elastic member is a crown spring inserted into the mounting hole, and the crown spring is electrically insulated from at least one of the mounting hole and the plug-in terminal.

18. An adaptive plug connector according to claim 17, characterized in that: The crown spring includes two axially spaced ring bodies and a plurality of spring wires, the two ends of the plurality of spring wires are respectively fixedly connected to the corresponding ring bodies and are provided with at least one inwardly bent portion, the bent portion elastically abuts against the outer side wall of the plug-in terminal, and the ring body radially abuts against the inner wall of the mounting hole.

19. A connection assembly, characterized in that: It comprises a mating cable, a mating terminal, a connecting cable and an adaptive plug connector as claimed in any one of claims 1 to 18; The mating cable and the mating terminal are arranged on an electrical module, and the end of the mating cable is electrically connected to the mating terminal; The adaptive plug connector and the connecting cable are arranged on another electrical module, and the end of the connecting cable is electrically connected to the wiring terminal; The mating terminal is conductively connected to the wiring terminal via a plug-in terminal and a conductive adapter to achieve electrical connection between two electrical modules.

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