Plug-in structure and electric connector

Abstract

The invention relates to a plug-in structure and an electric connector, the plug-in structure comprises a clamping sleeve and a push-pull sleeve, the clamping sleeve is provided with an annular clamping part, the annular clamping part is used for sleeving a plug-in structure so as to be clamped with an annular groove of the plug-in structure, and the clamping sleeve has elasticity so that the annular clamping part can be opened; the push-pull sleeve is movably sleeved outside the clamping sleeve so as to move between a locking position and an unlocking position relative to the clamping sleeve, and a limiting part is arranged on the inner peripheral side of the push-pull sleeve; when the push-pull sleeve is located at the locking position, the limiting part and the annular clamping part are axially aligned and abut against each other so as to limit the annular clamping part to be opened; and when the push-pull sleeve is located at the unlocking position, the limiting part and the annular clamping part are axially staggered. And the ring clamping part is sleeved outside the plug-in structure so as to be clamped and limited with the ring groove. And the ring clamping part is sleeved outside the plug-in structure, and the ring clamping part is clamped with the ring groove in the circumferential direction of the plug-in structure, so that the stability of clamping and limiting is improved. And when the limiting part and the ring clamping part are axially aligned, the ring clamping part can be limited to be opened, so that the ring clamping part can be kept clamped into the ring groove. The electric connector comprises the plugging structure, and self-locking is more stable.

Description

Technical Field

[0001] The present application relates to the technical field of conductive connection, and in particular to a plug-in structure and an electrical connector. Background Art

[0002] An electrical connector is usually used to electrically connect two devices to achieve power transmission or data exchange. An electrical connector usually includes a plug and a socket, which are respectively provided on the two devices to be connected. The two devices are electrically connected by plugging the plug into the socket.

[0003] In the connection scenario where there is relative movement between two devices, a plug and a socket are usually provided to form a self-locking function after being plugged in. However, the self-locking structure of the current self-locking connector is not effective, and is prone to loosening and falling off, which needs to be improved urgently. Summary of the invention

[0004] Based on this, it is necessary to provide a plug-in structure and an electrical connector to address the problem that the self-locking effect of the self-locking connector is poor.

[0005] On the one hand, the present application provides a plug-in structure, which is used to be plugged with a plug-in structure. The plug-in structure includes a clamping sleeve and a push-pull sleeve. The clamping sleeve is provided with a ring clamping portion, which is used to be sleeved outside the plug-in structure to be clamped with the ring groove of the plug-in structure. The clamping sleeve is elastic so that the ring clamping portion can be opened; the push-pull sleeve is movably sleeved outside the clamping sleeve to move between a locked position and an unlocked position relative to the clamping sleeve, and a limiting portion is provided on the inner circumference of the push-pull sleeve; when the push-pull sleeve is in the locked position, the limiting portion is axially aligned and abutted with the ring clamping portion to limit the opening of the ring clamping portion; when the push-pull sleeve is in the unlocked position, the limiting portion is axially misaligned with the ring clamping portion.

[0006] In one embodiment, the plug-in structure also includes an inner push sleeve and a first elastic member both disposed in the ferrule, the inner push sleeve abuts against the inner wall of the ferrule to push the ring clamping portion when the push-pull sleeve is in the unlocked position, so that the ring clamping portion opens; the first elastic member elastically pushes the inner push sleeve in the direction of abutting against the ring clamping portion.

[0007] In one embodiment, the ring clamp portion includes a first introduction surface facing the inner push sleeve, and the cross-sectional size of the first introduction surface gradually decreases in the direction away from the inner push sleeve; the inner push sleeve abuts against the first introduction surface to push the ring clamp portion to open when the push-pull sleeve is in the unlocking position.

[0008] In one of the embodiments, when the annular clamping portion is clamped with the annular groove, the inner push sleeve is used to abut against the plug-in structure, and the first elastic member and the plug-in structure abut against different sides of the inner push sleeve respectively.

[0009] In one embodiment, the inner push sleeve includes a bottom wall and an annular wall connected to the periphery of the bottom wall, the end of the annular wall away from the bottom wall abuts against the first introduction surface, and the first elastic member abuts against the bottom wall; when the annular clamping portion is clamped with the annular groove, the annular wall is used to be sleeved on the outside of the plug-in structure, and the bottom wall abuts against the plug-in structure.

[0010] In one embodiment, the plug-in structure also includes a second elastic member, which is elastically connected between the clamping sleeve and the push-pull sleeve, and the second elastic member elastically pushes the push-pull sleeve to move from the unlocked position to the locked position, or pushes the push-pull sleeve to remain in the locked position.

[0011] In one embodiment, the plug-in structure also includes a plug-in body and a positioning pin shaft, the plug-in body is used to be electrically connected to the plug-in structure, the ferrule is sleeved outside the plug-in body, the plug-in body and the ferrule are both provided with positioning holes, the two positioning holes extend along the same radial direction and are connected to each other, the positioning pin shaft successively passes through the two positioning holes, so that the plug-in body and the ferrule are relatively fixed.

[0012] In one of the embodiments, the push-pull sleeve is provided with a limiting waist hole, and the positioning pin shaft is passed through the limiting waist hole; when the push-pull sleeve is in the locking position, one side hole wall of the limiting waist hole abuts against the positioning pin shaft; when the push-pull sleeve is in the unlocking position, the other side hole wall of the limiting waist hole abuts against the positioning pin shaft.

[0013] In one embodiment, the positioning pin is interference fit with the positioning hole; or the positioning pin is threadedly fit with the hole wall of the positioning hole.

[0014] On the other hand, the present application also provides an electrical connector, which includes a plug-in structure and the plug-in structure as described above, and the plug-in structure is plugged into the plug-in structure; one of the plug-in structure and the plug-in structure is configured as a plug, and the other is configured as a socket.

[0015] In the above-mentioned plug-in structure, the ring clamp part is sleeved outside the plug-in structure to engage with the ring groove for position limiting. Compared with the conventional technology that only engages with the position limiting at a single place or a few scattered places, the ring clamp part in the present application is sleeved outside the plug-in structure, so that the ring clamp part is engaged with the ring groove in the circumferential direction of the plug-in structure, thereby improving the stability of the position limiting. Moreover, when the push-pull sleeve is in the locked position, the limit part and the ring clamp part are axially aligned and abutted to limit the opening of the ring clamp part, so that the ring clamp part can remain engaged in the ring groove, further improving the stability of the engagement. In this way, the self-locking stability of the electrical connector can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a front view of an electrical connector provided in one embodiment of the present application.

[0017] FIG. 2 is a cross-sectional view of the electrical connector shown in FIG. 1 along line AA.

[0018] FIG. 3 is a cross-sectional view of the plug-in structure in the electrical connector shown in FIG. 2 when the push-pull sleeve is in a locked position.

[0019] FIG. 4 is a cross-sectional view of the plug-in structure in the electrical connector shown in FIG. 2 when the push-pull sleeve is in an unlocked position.

[0020] FIG. 5 is an exploded schematic diagram of the plug-in structure in the electrical connector shown in FIG. 1 .

[0021] FIG. 6 is a schematic axial view of the inner push sleeve in the electrical connector shown in FIG. 5 .

[0022] FIG. 7 is a cross-sectional view of the ferrule in the electrical connector shown in FIG. 2 .

[0023] FIG. 8 is a cross-sectional view of the push-pull sleeve in the electrical connector shown in FIG. 2 .

[0024] FIG. 9 is a cross-sectional view of the plug-in structure in the electrical connector shown in FIG. 2 .

[0025] FIG. 10 is a schematic diagram of the plugging end surface of the plugging structure in the electrical connector shown in FIG. 1 .

[0026] FIG. 11 is a schematic diagram of the plug-in end surface of the plug-in structure in the electrical connector shown in FIG. 1 .

[0027] FIG. 12 is a schematic diagram of a test barrel used in a waterproof test of the electrical connector provided in the present application.

[0028] FIG. 13 is a schematic diagram of the electrical connector provided in the present application after a waterproof test.

[0029] FIG. 14 is a schematic diagram of a partial structure of the electrical connector provided in the present application when placed in a salt spray test chamber in a normal use position.

[0030] FIG. 15 is a schematic diagram of another partial structure of the electrical connector provided in the present application when placed in a salt spray test chamber in a normal use position.

[0031] FIG. 16 is a schematic diagram of a salt spray test chamber used in a salt spray test of the electrical connector provided in the present application.

[0032] FIG17 is a schematic diagram of the electrical connector provided in the present application after undergoing a salt spray test.

[0033] Reference numerals: 10, electrical connector; 11, plug-in structure; 12, plug-in structure; 100, ferrule; 101, ring clamp; 102, first introduction surface; 103, second introduction surface; 104, positioning hole; 110, connector; 111, second shoulder; 120, claw; 130, clamping part; 200, push-pull sleeve; 210, limiting part; 220, limiting waist hole; 230, outer sleeve; 300, inner push sleeve; 310, bottom wall; 320, circumferential wall; 330, avoidance groove; 400, first elastic member; 500, second elastic member; 600, plug-in body; 61 0, first shell; 611, first shoulder; 612, key position; 620, first insulator; 630, pin piece; 700, positioning pin; 811, first tail shell; 812, gasket; 813, shielding ring; 814, retaining ring; 815, second tail shell; 816, tail spring; 821, first sealing ring; 822, second sealing ring; 823, third sealing ring; 824, fourth sealing ring; 910, second shell; 911, ring groove; 920, second insulator; 930, socket piece; O, axial direction; O1, first direction; O2, second direction. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0040] Referring to FIG. 1 , FIG. 1 shows a front view of an electrical connector 10 provided in an embodiment of the present application. The electrical connector 10 provided in an embodiment of the present application includes a plug-in structure 11 and a mating structure 12, and the mating structure 12 is plugged with the plug-in structure 11. One of the mating structure 12 and the plug-in structure 11 is configured as a plug, and the other is configured as a socket. In each embodiment, the electrical connector 10 is described with the plug-in structure 11 as a plug and the mating structure 12 as a socket. It should be understood that the same is true when the plug-in structure 11 is a socket and the mating structure 12 is a plug, so it will not be repeated.

[0041] Please refer to Figures 2 to 4. In one embodiment, the plug-in structure 11 includes a ferrule 100 and a push-pull sleeve 200. The push-pull sleeve 200 is movably sleeved outside the ferrule 100 to move between a locked position and an unlocked position relative to the ferrule 100. The ferrule 100 is provided with a ring clamping portion 101, which is used to be sleeved outside the plug-in structure 12 to be clamped with the annular groove 911 of the plug-in structure 12. The ferrule 100 is elastic so that the ring clamping portion 101 can be opened, so as to facilitate insertion to a position in the annular groove 911 or to facilitate removal from the annular groove 911. A limiting portion 210 is provided on the inner circumference of the push-pull sleeve 200. When the push-pull sleeve 200 is in the locked position, the limiting portion 210 is aligned with the ring clamping portion 101 in the axial direction O to limit the opening of the ring clamping portion 101. When the push-pull sleeve 200 is in the unlocked position, the limiting portion 210 is misaligned with the ring clamping portion 101 in the axial direction O.

[0042] In the above-mentioned plug-in structure 11, the ring clamp part 101 is sleeved outside the plug-in structure 12 to engage with the annular groove 911 for position limiting. Compared with the single or scattered engagement and limiting in the traditional technology, the ring clamp part 101 in the present application is sleeved outside the plug-in structure 12, so that the ring clamp part 101 is engaged with the annular groove 911 in the circumferential direction of the plug-in structure 12, thereby improving the stability of the engagement and limiting. For example, compared with the use of multiple steel balls engaged with the annular groove 911, the ring clamp part 101 in the present application is sleeved outside the plug-in structure 12, so the ring clamp part 101 and the groove wall of the annular groove 911 can have more contact area, so the relative position of the ring clamp part 101 and the plug-in structure 12 is more stable, and the engagement and limiting effect is stronger. Moreover, compared with the scattered steel balls, the overall structure of the ferrule 100 is stable and easy to assemble.

[0043] As shown in FIG3, when the push-pull sleeve 200 is in the locked position, the limiting portion 210 and the ring clamp portion 101 are aligned and abutted in the axial direction O to limit the opening of the ring clamp portion 101, so that the ring clamp portion 101 can remain clamped in the ring groove 911, further improving the stability of the clamping. It can be understood that the ring clamp portion 101 is sleeved outside the plug-in structure 12 and clamped with the ring groove 911. When the limiting portion 210 of the push-pull sleeve 200 abuts the ring clamp portion 101 from the outside to the inside, the ring clamp portion 101 will be unable to open, so that it is stable and engaged in the ring groove 911. As shown in FIG4, when it is necessary to disassemble, the push-pull sleeve 200 can be controlled to move to the unlocking position, at which time the limiting portion 210 and the ring clamp portion 101 are offset in the axial direction O, and the ring clamp portion 101 can be elastically opened to escape from the ring groove 911. Further. When the plug-in structure 11 and the plug-in structure 12 are plugged in, the push-pull sleeve 200 can also be controlled to move to the unlocking position, so that the ring clamping portion 101 of the clamping sleeve 100 can be smoothly inserted into the ring groove 911. In this way, the self-locking stability of the electrical connector 10 can be improved.

[0044] Please refer to Figures 3 and 4. In one embodiment, the plug-in structure 11 further includes a first elastic member 400 and a second elastic member 500. The first elastic member 400 can directly or indirectly push the card sleeve 100 to open. That is, when the push-pull sleeve 200 moves to the unlocking position, the first elastic member 400 can automatically push the card sleeve 100 to open, so as to facilitate the smooth separation of the plug-in structure 11 and the plug-in structure 12.

[0045] The second elastic member 500 is elastically connected between the clamping sleeve 100 and the push-pull sleeve 200, and the second elastic member 500 elastically pushes the push-pull sleeve 200 to move from the unlocked position to the locked position, or pushes the push-pull sleeve 200 to remain in the locked position. In this way, the risk of locking failure caused by accidental shaking of the push-pull sleeve 200 can be reduced.

[0046] Please refer to Figures 4 and 5. In one embodiment, the plug-in structure 11 further includes an inner push sleeve 300, and the inner push sleeve 300 and the first elastic member 400 are both arranged in the ferrule 100. The inner push sleeve 300 abuts against the inner wall of the ferrule 100 to push against the ring clamping portion 101 when the push-pull sleeve 200 is in the unlocked position, so that the ring clamping portion 101 is opened. The first elastic member 400 elastically pushes the inner push sleeve 300 in the direction of abutting against the ring clamping portion 101. That is to say, in this embodiment, the first elastic member 400 can open the ring clamping portion 101 by pushing against the inner push sleeve 300, so as to facilitate the smooth separation of the plug-in structure 11 and the plug-in structure 12.

[0047] In conjunction with Fig. 7, in one embodiment, the ring clamp portion 101 includes a first introduction surface 102 toward the inner push sleeve 300, and the cross-sectional size of the first introduction surface 102 gradually decreases in the direction away from the inner push sleeve 300. The inner push sleeve 300 abuts against the first introduction surface 102 to push the ring clamp portion 101 to open when the push-pull sleeve 200 is in the unlocked position. Since the cross-sectional size of the first introduction surface 102 gradually decreases in the direction away from the inner push sleeve 300, the inner push sleeve 300 can gradually push the ring clamp portion 101 to open radially outward when sliding along the first introduction surface 102. In another embodiment, the inner push sleeve 300 can also be provided with a tapered outer profile, so that the inner push sleeve 300 can push the ring clamp portion 101 to open when the axial movement of the inner push sleeve 300 occurs.

[0048] Furthermore, the inner push sleeve 300 slides relative to the ferrule 100 along the axial direction O. In the direction away from the inner push sleeve 300 along the axial direction O, the inner diameter of the first introduction surface 102 (the first introduction surface 102 is the inner circumferential surface of the ring clamping part 101) gradually decreases. As a result, when the inner push sleeve 300 slides along the first introduction surface 102, it can gradually push the ring clamping part 101 to open.

[0049] Please refer to Figures 2 to 4. In one embodiment, when the ring clamping part 101 is engaged with the annular groove 911, the inner push sleeve 300 is used to abut against the plug-in structure 12. In addition, the first elastic member 400 and the plug-in structure 12 are respectively abutted on different sides of the inner push sleeve 300. Therefore, when the first elastic member 400 pushes the inner push sleeve 300 to move, the inner push sleeve 300 can synchronously push the plug-in structure 12 to move, so that the plug-in structure 12 moves to a position where the annular groove 911 and the ring clamping part 101 are axially misaligned O, even if the ring clamping part 101 is disengaged from the annular groove 911. It is easy to understand that since the first elastic member 400 is arranged in the ferrule 100, and the plug-in structure 12 is inserted into the ferrule 100 from the outside of the ferrule 100 to be engaged with the ring clamping part 101, the direction in which the first elastic member 400 pushes the plug-in structure 12 through the inner push sleeve 300 is the direction in which the plug-in structure and the plug-in structure 11 are separated. That is to say, in this embodiment, the inner push sleeve 300 can not only push the ring clamping part 101 to open, but also can simultaneously push the plug-in structure 12 and the plug-in structure 11 to separate.

[0050] Furthermore, when the plug-in structure 12 is inserted into the ferrule 100, it can abut against the inner push sleeve 300 and compress the first elastic member 400, so that the first elastic member 400 accumulates elastic potential energy. Therefore, when the push-pull sleeve 200 moves to the unlocking position, the first elastic member 400 can release the elastic potential energy to push the ring clamping part 101 to open and push the plug-in structure 12 to split.

[0051] 3 and 4 , the first direction O1 and the second direction O2 are two opposite directions on the axial direction O, and the plug-in structure 12 is plugged into the plug-in structure 11 along the first direction O1. The first elastic member 400 pushes the inner push sleeve 300 and the plug-in structure 12 to move along the second direction O2.

[0052] Please refer to Figures 2 to 4. In one embodiment, the plug structure 11 includes a plug body 600, which is used to electrically connect to the plug structure 12, that is, the plug body 600 mainly plays the role of electrical connection in the plug structure 11. The plug body 600 includes a first shell 610, a first insulator 620 and a pin 630. The pin 630 is inserted into the first insulator 620 for electrical conduction with the plug structure 12. The first shell 610 is sleeved outside the first insulator 620. A first sealing ring 821 may be provided between the first shell 610 and the first insulator 620 to improve the sealing and waterproofing of the electrical connector 10.

[0053] 3 and 4 , one end of the first elastic member 400 abuts the first housing 610 , and the other end of the first elastic member 400 abuts the inner push sleeve 300 . Further, the outer periphery of the first housing 610 is provided with a first shoulder 611 , and the side of the first elastic member 400 away from the inner push sleeve 300 abuts the first shoulder 611 .

[0054] Please refer to FIG. 6 and FIG. 2 . In one embodiment, the inner push sleeve 300 includes a bottom wall 310 and a circumferential wall 320. The circumferential wall 320 is connected to the periphery of the bottom wall 310. One end of the circumferential wall 320 away from the bottom wall 310 abuts against the first introduction surface 102. The first elastic member 400 abuts against the bottom wall 310. When the annular clamping portion 101 is clamped with the annular groove 911, the circumferential wall 320 is used to be sleeved outside the plug-in structure 12, and the bottom wall 310 abuts against the plug-in structure 12.

[0055] The outer diameter of the circumferential wall 320 can be the same as or slightly smaller than the inner diameter of the ferrule 100. Thus, the inner push sleeve 300 can be slidably matched with the ferrule 100 to improve the stability of the movement of the inner push sleeve 300.

[0056] Please refer to FIG. 7 . In one embodiment, the ferrule 100 includes a connector 110 and a plurality of claws 120 . The plurality of claws 120 are sequentially connected to the periphery of the connector 110 along the circumferential direction and are extended along the axial direction O. A clamping portion 130 is provided at one end of the plurality of claws 120 away from the connector 110 . The plurality of clamping portions 130 are circumferentially surrounded to form an annular clamping portion 101 distributed in an annular manner.

[0057] Furthermore, the ferrule 100 may be made of H62 brass or other elastic materials.

[0058] Please refer to FIG. 7 . In one embodiment, the ring clamp portion 101 further includes a second introduction surface 103 . The second introduction surface 103 is disposed opposite to the first introduction surface 102 . The second introduction surface 103 is used to face the outside of the ferrule 100 . The inner diameter of the second introduction surface 103 gradually increases along the axial direction O pointing to the outside of the ferrule 100 . Therefore, when the plug-in structure 12 is inserted into the ferrule 100 from the outside to the inside along the second direction O2 , it can push against the second introduction surface 103 , so that the ring clamp portion 101 gradually opens. Thus, the ring clamp portion 101 can move along the outer periphery of the plug-in structure 12 to the location of the annular groove 911 and snap into the annular groove 911 . The first introduction surface 102 and the second introduction surface 103 can both be part of the inner circumferential surface of the ferrule 100 .

[0059] Please refer to Figures 3, 4 and 7. The connecting body 110 is provided with a second shoulder 111. One end of the second elastic member 500 abuts against the second shoulder 111, and the other end of the second elastic member 500 abuts against the limiting portion 210. The push-pull sleeve 200 moves from the locked position to the unlocked position, that is, the limiting portion 210 moves closer to the second shoulder 111. Therefore, at this time, the limiting portion 210 cooperates with the second shoulder 111 to compress the second elastic member 500 to accumulate elastic potential energy. When the driving force for operating the push-pull sleeve 200 to move is removed, the second elastic member 500 releases the elastic potential energy and can drive the push-pull sleeve 200 back to the locked position.

[0060] The first elastic member 400 and the second elastic member 500 may both be configured as compression springs. Of course, the first elastic member 400 and the second elastic member 500 may also be configured as other elastic elements, which will not be described in detail herein.

[0061] Please refer to FIG. 3 and FIG. 8 . In one embodiment, the stopper 210 may protrude from the inner peripheral wall of the push-pull sleeve 200, and the side of the stopper 210 facing the second shoulder 111 may be configured as a flat surface to facilitate contact with the second elastic member 500. The side of the stopper 210 away from the second shoulder 111 may be configured as an arc surface or an inclined surface to reduce damage during the interaction with the ring clamp 101. Similarly, the outer peripheral surface of the ring clamp 101 may be provided with an arc surface or a curved surface to reduce damage during the interaction with the stopper 210.

[0062] Please refer to FIG. 5 . In one embodiment, the plug-in structure 11 further includes a positioning pin 700. The ferrule 100 is sleeved on the outside of the plug-in body 600. The plug-in body 600 and the ferrule 100 are both provided with positioning holes 104. The two positioning holes 104 extend along the same radial direction and are interconnected. The positioning pin 700 is successively penetrated by two positioning holes 104 to relatively fix the plug-in body 600 and the ferrule 100. Compared with the traditional technology of using steel balls for self-locking limit, the present application uses the ferrule 100 to achieve self-locking clamping. The connection and fixation of the ferrule 100 and the plug-in body 600 can be completed by plugging the positioning pin 700, and the assembly method is simple.

[0063] Furthermore, the positioning pin 700 is interference fit with the positioning hole 104. Alternatively, the positioning pin 700 is threadedly matched with the hole wall of the positioning hole 104. The positioning pin 700 can be made of H59 brass, which has sufficient strength and high hardness. Of course, the positioning pin 700 can also be made of other materials, which will not be described here. The positioning pin 700 is used to achieve fixation, and the structure and fixing method are simple, and the positioning pin 700 is convenient for mass production.

[0064] Please refer to FIG. 5 and FIG. 8 . In one embodiment, the push-pull sleeve 200 is provided with a limited waist hole 220, and the positioning pin 700 is passed through the limited waist hole 220. When the push-pull sleeve 200 is in the locked position, one side hole wall of the limited waist hole 220 abuts against the positioning pin 700. When the push-pull sleeve 200 is in the unlocked position, the other side hole wall of the limited waist hole 220 abuts against the positioning pin 700. Thus, the movement stroke of the push-pull sleeve 200 can also be limited by the positioning pin 700.

[0065] Furthermore, an outer sleeve 230 is screwed onto the outer periphery of the push-pull sleeve 200 , and the outer sleeve 230 covers the limiting waist hole 220 to reduce the risk of external debris or liquid entering the plug-in structure 11 from the limiting waist hole 220 .

[0066] Please refer to FIG. 9. In one embodiment, the plug-in structure 12 includes a second shell 910, a second insulator 920 and a socket member 930. The socket member 930 is inserted into the second insulator 920, and the socket member 930 is used to be plugged with the pin member 630 for electrical conduction. The second shell 910 is sleeved outside the second insulator 920. The annular groove 911 is provided on the outer peripheral wall of the second shell 910. A second sealing ring 822 may be provided between the second shell 910 and the second insulator 920 to improve the waterproofness. At the same time, as shown in FIG. 2, a third sealing ring 823 may be embedded in the inner periphery of the second shell 910. When the ring clamping portion 101 is clamped with the annular groove 911, the third sealing ring 823 abuts between the second shell 910 and the first shell 610 to improve the waterproofness of the plug-in.

[0067] Please refer to Figures 10 and 11. The first housing 610 and the second housing 910 are respectively provided with a plurality of key positions 612 that fit with each other. Through the positioning and matching of the plurality of key positions 612, the plurality of socket members 930 can be plugged and matched with the plurality of pin members 630 in a one-to-one correspondence. The outer surfaces of the plug-in structure 11 and the plug-in structure 12 can be respectively provided with markings (such as arrows, etc.), and the key positions 612 of the plug-in structure 11 can be aligned with the key positions 612 of the plug-in structure 12 by aligning the two markings.

[0068] As shown in FIG. 6 , the inner push sleeve 300 can be sleeved on the first shell 610 . The inner push sleeve 300 is provided with a plurality of avoidance grooves 330 . The plurality of avoidance grooves 330 respectively correspond to the plurality of key positions 612 on the first shell 610 , so that the inner push sleeve 300 can slide freely along the axial direction O.

[0069] Please refer to FIG. 1 and FIG. 2 again. In one embodiment, the plug-in structure 11 further includes a first tail housing 811, a washer 812, a shielding ring 813, a retaining ring 814, a second tail housing 815, and a tail spring 816. The first tail housing 811 is sleeved outside the first housing 610 and is screwed with the first housing 610. The first tail housing 811 can have the function of fixing the wiring harness. A fourth sealing ring 824 can be provided between the first tail housing 811 and the first housing 610 to play the role of sealing the connector. The washer 812 and the shielding ring 813 are arranged in the first tail housing 811. After the first tail housing 811 is threadedly connected and tightened, the shielding ring 813 and the washer 812 are closely matched with the inner peripheral wall of the first tail housing 811. Since the shielding ring 813 and the washer 812 are made of brass nickel-plated material, they have a certain conductivity, so they can protect the wiring harness from working normally under high temperature and high pressure. Furthermore, the wiring harness can be tightened and fixed by the aperture of the shielding ring 813. The second tail shell 815 is sleeved outside the first tail shell 811 and is screwed to the first tail shell 811. The sealing gasket and the retaining ring 814 are arranged in the second tail shell 815, and the tail spring 816 is passed through the second tail shell 815. Similarly, the sealing gasket and the retaining ring 814 can lock and wrap the wiring harness to make the whole sealed. The stainless steel material used in the tail spring 816 has the characteristics of corrosion resistance, high elasticity, wear resistance and high toughness, which can further reduce the risk of damage to the wiring harness. The tail parts of the plug-in structure 11 are simple, easy to use, quick to install, and can be repaired and reused.

[0070] In one embodiment, in the plug-in structure 11, the push-pull sleeve 200, the first tail shell 811 and the second tail shell 815 and other structures exposed to the outside can be made of aluminum alloy AL6023 material, which has excellent seawater resistance and corrosion resistance, and has high fatigue strength. At the same time, the outer coating is plated with black chrome to further improve the corrosion resistance and high temperature resistance of the material. The first insulator 620, the shielding ring 813, the retaining ring 814, the first shell 610, the ferrule 100 and the pin 630 can be made of brass, which can still maintain good mechanical properties in a relatively high temperature environment. The first elastic member 400, the second elastic member 500, the inner push sleeve 300 and the tail spring 816 can be made of stainless steel, which has the characteristics of high temperature resistance, corrosion resistance, high strength and stainlessness. At the same time, it can be passivated to further improve the corrosion resistance of the material. The first insulator 620 can be made of a special plastic LCP material, which has excellent electrical insulation and good dielectric strength, good corrosion resistance and high temperature resistance, and is fireproof and safe.

[0071] In the plug-in structure 12, the second shell 910 can be made of a copper alloy material with high strength and hardness and easy processing. The outer coating is black chrome plating to protect the material from oxidation. The second insulator 920 can be made of a special plastic LCP material, which has excellent electrical insulation and good dielectric strength, good corrosion resistance and high temperature resistance, and has fire safety and other characteristics.

[0072] Furthermore, the present application also performs waterproof test and salt spray test on the provided electrical connector 10.

[0073] About waterproof test:

[0074] Qualification requirements: Under room temperature and pressure, plug and assemble the plug-in structure 11 and the plug-in structure 12 into place. Put them into 2m water depth (as shown in Figure 12, a test bucket with a depth of 2m is provided), and let them stand for 30 minutes. There should be no water seepage in the internal components of the product.

[0075] Test process: Under room temperature and pressure conditions, after the plug-in structure 11 and the plug-in structure 12 are installed together, a 300g weight is hung on the cable (the weight is increased to ensure that the electrical connector 10 is placed at a depth of 2m in water), and placed in a simple waterproof test bucket at a depth of 2m for 30 minutes.

[0076] Test results: After 30 minutes of placement, the product was taken out (as shown in FIG. 13 ), and the internal components of the plug-in structure 11 and the plug-in structure 12 were checked, and no water seepage was found.

[0077] About salt spray test:

[0078] Qualification requirements: Under normal temperature, pressure and humidity, the electrical connector 10 is placed in a salt spray test chamber in its normal use position. After 72 hours of salt spray of 5% NaCl solution, the corrosion area of ​​the metal protective layer should account for less than 2% of the total area. Non-metallic materials should not have obvious defects such as whitening, expansion, blistering, cracking and pitting.

[0079] Test process: In a normal pressure environment with a temperature of 35°C and a relative humidity (RH) of 70%, the electrical connector 10 is placed in a salt spray test chamber (as shown in FIG. 16 ) in a normal use position (as shown in FIG. 14 and FIG. 15 ) and is exposed to salt spray of a 5% NaCl solution for 72 hours.

[0080] Test results: As shown in Figure 17, the corrosion area of ​​the metal protective layer is less than 1% of the total area. The non-metallic material has no obvious whitening, expansion, blistering, wrinkling, cracking or pitting.

[0081] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A plug-in structure, characterized in that: The plug-in structure is used for plugging with the plug-in structure, and the plug-in structure includes: A ferrule, wherein the ferrule is provided with a ring clamping portion, the ring clamping portion is used to be sleeved outside the plug-in structure to be clamped with the ring groove of the plug-in structure, and the ferrule is elastic so that the ring clamping portion can be opened; A push-pull sleeve, which is movably sleeved outside the clamping sleeve to move between a locking position and an unlocking position relative to the clamping sleeve, and a limiting portion is provided on the inner circumference of the push-pull sleeve; When the push-pull sleeve is in the locking position, the limiting portion is axially aligned and abutted against the ring clamp portion to limit the opening of the ring clamp portion; When the push-pull sleeve is in the unlocking position, the limiting portion and the ring clamp portion are axially misaligned.

2. The plug-in structure according to claim 1, characterized in that: The plug-in structure also includes an inner push sleeve and a first elastic member both arranged in the clamping sleeve. The inner push sleeve abuts against the inner wall of the clamping sleeve to push the ring clamping part when the push-pull sleeve is in the unlocking position to open the ring clamping part; the first elastic member elastically pushes the inner push sleeve in the direction of abutting against the ring clamping part.

3. The plug-in structure according to claim 2, characterized in that: The ring clamp portion includes a first introduction surface facing the inner push sleeve, and the cross-sectional size of the first introduction surface gradually decreases in the direction away from the inner push sleeve; the inner push sleeve abuts against the first introduction surface to push the ring clamp portion to open when the push-pull sleeve is in the unlocking position.

4. The plug-in structure according to claim 3, characterized in that: When the annular clamping portion is clamped with the annular groove, the inner push sleeve is used to abut against the plug-in structure, and the first elastic member and the plug-in structure are respectively abutted against different sides of the inner push sleeve.

5. The plug-in structure according to claim 4, characterized in that: The inner push sleeve includes a bottom wall and an annular wall connected to the periphery of the bottom wall, the end of the annular wall away from the bottom wall abuts against the first introduction surface, and the first elastic member abuts against the bottom wall; when the annular clamping portion is clamped with the annular groove, the annular wall is used to be sleeved on the outside of the plug-in structure, and the bottom wall abuts against the plug-in structure.

6. The plug-in structure according to any one of claims 1 to 5, characterized in that: The plug-in structure also includes a second elastic member, which is elastically connected between the clamping sleeve and the push-pull sleeve. The second elastic member elastically pushes the push-pull sleeve to move from the unlocking position to the locking position, or pushes the push-pull sleeve to remain in the locking position.

7. The plug-in structure according to claim 1, characterized in that: The plug-in structure also includes a plug-in body and a positioning pin shaft, the plug-in body is used to be electrically connected to the plug-in structure, the ferrule is sleeved outside the plug-in body, the plug-in body and the ferrule are both provided with positioning holes, the two positioning holes extend along the same radial direction and are connected to each other, the positioning pin shaft successively passes through the two positioning holes, so that the plug-in body and the ferrule are relatively fixed.

8. The plug-in structure according to claim 7, characterized in that: The push-pull sleeve is provided with a limited waist hole, and the positioning pin is passed through the limited waist hole; When the push-pull sleeve is in the locking position, a side hole wall of the limiting waist hole abuts against the positioning pin shaft; When the push-pull sleeve is in the unlocking position, the other side hole wall of the limiting waist hole abuts against the positioning pin shaft.

9. The plug-in structure according to claim 7, characterized in that: The positioning pin shaft and the positioning hole are interference fit; or The positioning pin shaft is threadably matched with the hole wall of the positioning hole.

10. An electrical connector, characterized in that: The electrical connector comprises a plug-in structure and a plug-in structure according to any one of claims 1 to 9, wherein the plug-in structure is plugged into the plug-in structure; One of the plug-in structure and the plug-in structure is configured as a plug, and the other is configured as a socket.

Images