Self-locking plug end assembly and electric connector

Abstract

The invention relates to a self-locking plug end assembly and an electric connector, the self-locking plug end assembly comprises a shell part and an overturning clamping plate, the shell part comprises an inner sleeve and an outer shell, the inner sleeve is provided with an inner cavity for plugging of a plugging structure, and the inner sleeve is provided with a communication window for communicating the inner cavity with the circumferential outer side of the inner sleeve; the turnover clamping plate is located on the peripheral side of the inner sleeve and comprises a first end, an adaptive part and a second end which are sequentially distributed, the adaptive part is in running fit with the inner sleeve, the first end extends into the inner cavity through the communicating window, the second end is located outside the inner sleeve, and the second end drives the first end to turn outwards when being driven; wherein the shell is sleeved outside the inner sleeve and the turnover clamping plate.

Description

Technical Field

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

[0002] As a key component for realizing circuit connection, the electrical connector is usually composed of a plug and a socket. The electrical connector in the traditional technology usually also has a self-locking function, which is usually achieved by respectively setting a matching locking structure on the plug shell and the socket shell, such as a steel ball snap-on locking structure. After the plug and the socket are plugged in, the steel ball and the matching slot-shaped structure cooperate with each other to achieve self-locking.

[0003] However, the current self-locking electrical connector is limited by the installation and arrangement space of the locking structure, and it is difficult to achieve miniaturization and integrated design. Summary of the invention

[0004] Based on this, it is necessary to provide a self-locking plug-in terminal assembly and an electrical connector to address the problem that the current self-locking electrical connector is difficult to achieve miniaturization and integrated design.

[0005] On the one hand, the present application provides a self-locking plug-in terminal assembly, which includes a shell component and a flip card plate, the shell component includes an inner sleeve and an outer sleeve, the inner sleeve has an inner cavity for plugging a plug-in structure, and the inner sleeve is provided with a connecting window connecting the inner cavity with the circumferential outer side of the inner sleeve; the flip card plate is located on the outer circumference of the inner sleeve, the flip card plate includes a first end, an adapter and a second end distributed in sequence, the adapter portion is rotatably matched with the inner sleeve, the first end extends into the inner cavity through the connecting window, the second end is located outside the inner sleeve, and the second end drives the first end to flip outward when driven; wherein, the outer sleeve is sleeved outside the inner sleeve and the flip card plate.

[0006] In one embodiment, the housing has a locking portion, and the housing can move to a position where the locking portion abuts against the first end, and a position offset from the first end.

[0007] In one embodiment, the inner side of the outer shell has a thrust surface, at least a portion of the thrust surface is located on the side of the second end away from the first end, and the distance from the thrust surface to the inner sleeve gradually increases along the direction of the inner sleeve axis approaching the first end, and the outer shell can move axially relative to the inner sleeve between a locked position and an unlocked position; when the outer shell is in the locked position, the locking portion is radially aligned with the first end and abuts against the first end; when the outer shell is in the unlocked position, the thrust surface abuts against the second end, and the locking portion is staggered from the first end.

[0008] In one embodiment, the self-locking plug end assembly further includes a reset member, which is elastically connected between the housing and the inner sleeve to drive the housing to move to or return to the locking position when the housing is not driven.

[0009] In one embodiment, the self-locking plug end assembly further includes a ferrule, which is sleeved outside the inner sleeve and located on the outer peripheral side of the first end, and the ferrule is an elastic member.

[0010] In one embodiment, the inner sleeve has a receiving ring groove on the outer peripheral side, the ferrule is arranged in the receiving ring groove, the communication window is opened on the bottom wall of the receiving ring groove, and the first end penetrates through the receiving ring groove and extends to the communication window.

[0011] In one embodiment, the inner sleeve includes a support body on the outer peripheral side, the fitting portion has a fitting groove, and the support body is movably inserted into the fitting groove.

[0012] In one embodiment, the inner sleeve has a receiving groove, the second end is movably located in the receiving groove, and opposite sides of the support body are respectively used to enclose and form the receiving groove and the communication window; when the second end is driven to abut against the bottom wall of the receiving groove, at least part of the structure of the first end is located in the communication window.

[0013] In one embodiment, the inner sleeve includes a sleeve body, a first ring body and a second ring body, the first ring body and the second ring body are arranged on the outer periphery of the sleeve body at intervals along the axis of the sleeve body, and opposite sides of the first ring body and the second ring body facing away from each other are respectively used to abut against the housing to define the movement stroke of the housing; the receiving groove is recessed in a part of the second ring body, and another part of the second ring body protrudes relative to the bottom wall of the receiving groove to form a protruding part of the support body.

[0014] On the other hand, the present application further provides an electrical connector, which includes the self-locking plug end assembly as described above.

[0015] In the above-mentioned self-locking plug-in end assembly, the flip card is located on the outer peripheral side of the inner sleeve, and its adapter part is rotatably matched with the inner sleeve, so the first end and the second end of the flip card can be flipped around the adapter part accordingly. The flip card is configured to be similar to a lever in a lever mechanism, and the first end can be flipped into the inner cavity through the connecting window to be self-locked with the plug-in structure. The second end is located outside the inner sleeve, and when the second end is driven, the flip card can be flipped as a whole, driving the first end to flip outward and disengage from the plug-in structure to achieve unlocking. In the present application, since the flip card is located on the outer peripheral side of the inner sleeve, rather than embedded in the interior of the inner sleeve, the thickness of the inner sleeve is not limited by the flip card, and the thickness of the inner sleeve can be flexibly set according to the requirements of integration and miniaturization, which is convenient for realizing miniaturization and integrated design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic cross-sectional view of a self-locking portion in an exemplary self-locking connector provided in one embodiment of the present application.

[0017] Figure 2 This is a schematic isometric view of a self-locking plug-in assembly provided in one embodiment of the present application.

[0018] Figure 3 for Figure 2 A front view of the self-locking spigot assembly is shown.

[0019] Figure 4 for Figure 3 The self-locking plug-in assembly is shown in a cross-sectional view along line AA.

[0020] Figure 5 for Figure 2 Axonometric diagram of the self-locking plug assembly with the housing hidden.

[0021] Figure 6 for Figure 4 A schematic cross-sectional view of an inner sleeve in a self-locking plug-in terminal assembly is shown.

[0022] Figure 7 for Figure 5 A schematic isometric view of the inner sleeve in the self-locking plug-in assembly shown.

[0023] Figure 8 for Figure 5 A top view of the flip card in the self-locking plug-in end assembly is shown.

[0024] Reference Numerals: 10, self-locking plug end assembly; 21, inner shell; 21a, communication hole; 22, steel ball; 23, mating cavity; 100, housing component; 110, inner sleeve; 111, inner cavity; 112, communication window; 113, receiving annular groove; 114, support body; 114a, support surface; 114b, first side; 114c, second side; 115, receiving groove; 116, sleeve body; 117, first ring body; 118, second ring body; 118a, guiding surface; 120, outer shell; 121, locking portion; 122, pushing surface; 123, third ring body; 200, flipping card; 210, first end; 220, fitting portion; 221, fitting groove; 230, second end; 300, reset member; 400, hoop ring; 500, snap ring; 600, conductive component; 610, insulator; 620, terminal; O, axis; H, thickness dimension; S, depth; r, radius. Detailed Embodiment

[0025] To make the above objects, features, and advantages of the present application more apparent and understandable, the following describes the detailed embodiment of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description 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 departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0027] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In this application, unless otherwise clearly defined and limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0031] Combined with Figure 1 , the self-locking connector in the traditional technology generally includes an inner shell 21 and a steel ball 22. The inner shell 21 has a mating cavity 23 for inserting another mating structure (plug or socket). The inner shell 21 is also provided with a communication hole 21a, and the communication hole 21a communicates with the mating cavity 23. The steel ball 22 is located in the communication hole 21a, and a part of the sphere of the steel ball 22 protrudes and extends into the mating cavity 23. Thus, when another mating structure is inserted into the mating cavity 23, the steel ball 22 can be engaged with the mating structure to achieve self-locking. Moreover, the steel ball 22 can also move within the communication hole 21a to retract into the communication hole 21a to unlock the mating structure. As Figure 1As shown, limited by the mating manner between the steel ball 22 and the inner shell 21, the inner shell 21 has to be configured with a sufficiently large thickness dimension H such that the steel ball 22 neither falls into the mating cavity 23 nor disengages from the communication hole 21a on the outer peripheral side of the inner shell 21 during unlocking. Further, the mating manner between the steel ball 22 and the inner shell 21 determines that the volume of the part of the steel ball 22 extending into the mating cavity 23 must be less than half of the volume of the steel ball 22 (otherwise the steel ball 22 will fall into the mating cavity 23), that is, the extending depth S of the steel ball 22 is less than its radius r, resulting in a small effective clamping dimension of the steel ball 22. That is to say, the self-locking manner of clamping the steel ball 22 in the conventional technology not only requires the inner shell 21 to have a relatively large thickness dimension H, but also has the problem of insufficient effective clamping dimension.

[0032] To solve the above problems, the present application provides a self-locking plug end assembly. The self-locking plug end assembly includes an inner sleeve and a flipping clamping plate. The inner sleeve has an inner cavity for inserting another plugging structure (i.e., a plug or a socket). The flipping clamping plate is disposed outside the inner sleeve and is rotatably mated with the inner sleeve. One end of the flipping clamping plate can be flipped into the inner cavity through the inner sleeve to be clamped with the plugging structure to achieve self-locking. The other end of the flipping clamping plate is still located outside the inner sleeve and can drive the whole flipping clamping plate to rotate when being driven, so that the end of the flipping clamping plate extending into the inner cavity is turned outwards to achieve unlocking. In the self-locking plug end assembly, the flipping clamping plate is not disposed inside the inner sleeve. Therefore, the thickness dimension of the inner sleeve is not limited by the flipping clamping plate and can be flexibly set according to the requirements of integration and miniaturization. Moreover, compared with the self-locking manner of clamping with steel balls in the conventional technology, the flipping clamping plate provided in the present application is similar to the lever in the lever mechanism. The flipping clamping plate has no dimension limitation that the extending depth S is less than the radius r as described above, and the dimension of the flipping clamping plate extending into the inner cavity can be freely designed according to the clamping requirements. In short, in the case of the same effective clamping dimension, the inner sleeve provided in the present application can have a smaller size, and the overall size of the self-locking plug end assembly can also be correspondingly configured to be smaller.

[0033] It can be understood that, compared with the steel ball 22 being embedded in the inner shell 21 in the conventional technology, the flipping clamping plate in the present application is located outside the inner sleeve, and there is no longer a thickness dimension association between the flipping clamping plate and the inner sleeve. Thus, as an example, when the strength requirement is met, the flipping clamping plate can be received by means of local grooving (for example, providing a receiving groove 115 as mentioned in the following embodiments), reducing the influence of the flipping clamping plate on the overall size of the self-locking plug end assembly. The following will describe in detail the self-locking plug end assembly provided in each embodiment of the present application and the electrical connector to which the self-locking plug end assembly is applied in conjunction with the specification drawings and the specific embodiments.

[0034] It should be noted that in each embodiment, the axis O of the self-locking plug end assembly will be taken as a reference to describe the movement directions, position arrangements, and approximate structures and other features of the components included in the self-locking plug end assembly. The axial direction in each embodiment is the direction along the axis O. Further, the axis O of the self-locking plug end assembly is the axis O of its inner sleeve.

[0035] An embodiment of the present application provides an electrical connector, which includes a self-locking plug end assembly and a plugging structure. The self-locking plug end assembly is plugged into the plugging structure to form an electrical connection. Further, one of the self-locking plug end assembly and the plugging structure can be configured as a plug, and the other is configured as a socket.

[0036] Please refer to Figures 2 to 4 , the self-locking plug end assembly 10 provided by an embodiment of the present application includes a housing component 100 and a flipping card 200. The flipping card 200 is arranged on the housing component 100. The housing component 100 includes an inner sleeve 110 and an outer shell 120. The flipping card 200 is arranged on the inner sleeve 110, and the outer shell 120 is sleeved outside the inner sleeve 110 and the flipping card 200. The inner sleeve 110 has an inner cavity 111 for the plugging structure to be plugged into. The inner sleeve 110 is also provided with a communication window 112, and the communication window 112 communicates the inner cavity 111 with the circumferential outside of the inner sleeve 110.

[0037] Among them, the flipping card 200 is located on the outer peripheral side of the inner sleeve 110. The flipping card 200 includes a first end 210, an adaptation part 220, and a second end 230 which are distributed in sequence. The adaptation part 220 is rotationally matched with the inner sleeve 110. The first end 210 extends into the inner cavity 111 through the communication window 112. Therefore, the first end 210 can be clamped with the plugging structure to achieve plug-in self-locking. The second end 230 is located outside the inner sleeve 110. When the second end 230 is driven, it drives the first end 210 to turn outwards. Therefore, by operating the second end 230, the whole flipping card 200 can be driven to flip, so that the first end 210 turns outwards and disengages from the plugging structure to achieve unlocking.

[0038] In the above self-locking plug-in end assembly 10, the flip card 200 is located on the outer peripheral side of the inner sleeve 110, and its adapter 220 is rotatably matched with the inner sleeve 110, so the first end 210 and the second end 230 of the flip card 200 can be flipped around the adapter 220 accordingly. The flip card 200 is configured to be similar to a lever in a lever mechanism, and the first end 210 can be flipped into the inner cavity 111 through the connecting window 112 to be self-locked with the plug-in structure. The second end 230 is located outside the inner sleeve 110, and when the second end 230 is driven, the flip card 200 can be flipped as a whole, driving the first end 210 to flip outward and disengage from the plug-in structure to achieve unlocking. In the present application, since the flip card 200 is located on the outer peripheral side of the inner sleeve 110, rather than being embedded in the inner sleeve 110, the thickness of the inner sleeve 110 is not limited by the flip card 200, and the thickness of the inner sleeve 110 can be flexibly set according to the requirements of integration and miniaturization.

[0039] Furthermore, as mentioned above, the outer shell 120 is sleeved on the inner sleeve 110 and the flip card plate 200, that is, the outer shell 120 and the inner sleeve 110 are connected inside and outside, and the flip card plate 200 is clamped between the two. The outer shell 120 and the inner sleeve 110 cooperate with each other to limit the position of the flip card plate 200 within a certain range, so that the flip card plate 200 always maintains rotational cooperation with the inner sleeve 110.

[0040] See also Figure 4 In one embodiment, the outer shell 120 further has a locking portion 121, which abuts against the first end 210 from the outside to the inside, and can limit the first end 210 from turning outward, so that the first end 210 stably extends inward into the inner cavity 111 and stably engages with the plug-in structure. Further, the outer shell 120 is axially movable, and the outer shell 120 can move relative to the inner sleeve 110 to a position where the locking portion 121 and the first end 210 are radially aligned to support the first end 210 and improve the stability of the first end 210 and the plug-in structure. The outer shell 120 can also move relative to the inner sleeve 110 to a position where the locking portion 121 and the first end 210 are staggered, so that the flip card 200 can flip freely. It is easy to understand that the locking portion 121 and the first end 210 are radially aligned, which means that the radial projection of the locking portion 121 and the first end 210 have an overlapping area, so as to abut and support the first end 210.

[0041] Regarding the driving method for driving the flip card 200 to flip, for example, in one embodiment, the housing 120 may be configured to have an exposure window (not shown in the figure, the same below), and the exposure window allows the second end 230 to be exposed to the housing 120. Thus, by directly pressing the second end 230, the first end 210 can be turned outward and exit the inner cavity 111 to achieve unlocking.

[0042] Alternatively, in another embodiment, the flip card plate 200 can be indirectly driven to flip by driving the housing 120 to move. Specifically, since the housing 120 is axially movable, the flip card plate 200 can be driven to rotate accordingly by operating the housing 120 to move and push the second end 230. Figure 4 The outer shell 120 is movably sleeved on the inner sleeve 110 and the flip card plate 200, and the outer shell 120 can axially move between the locked position and the unlocked position relative to the inner sleeve 110. The inner side of the outer shell 120 has a push surface 122, and at least a part of the push surface 122 is located on the side of the second end 230 away from the first end 210. In addition, along the direction of the axis O of the inner sleeve 110 approaching the first end 210, the distance from the push surface 122 to the inner sleeve 110 gradually increases, that is, the push surface 122 faces the flip card plate 200 and is in a trumpet shape that expands outward.

[0043] When the housing 120 is in the locked position, the locking portion 121 is radially aligned with the first end 210, and the locking portion 121 is in contact with the first end 210. At this time, the locking portion 121 can support the first end 210 from the outside to the inside, so that the first end 210 and the plug-in structure are stably connected. And at this time, the push surface 122 can be arranged at a distance from the second end 230, and the push surface 122 does not apply a driving force to the second end 230. Of course, at this time, the push surface 122 can also contact the second end 230, and the inward extension depth of the first end 210 can be controlled by the amplitude of the push surface 122 pressing the second end 230.

[0044] When the housing 120 is in the unlocked position, the push surface 122 abuts against the second end 230, and the locking portion 121 is staggered from the first end 210. It can be understood that since the push surface 122 is located on the side of the second end 230 away from the first end 210, and the push surface 122 is trumpet-shaped and expands outward. Therefore, when the housing 120 moves from the locked position to the direction close to the flip card 200 (that is, moves to the unlocked position), the push surface 122 can gradually push the second end 230 inward, so that the first end 210 is turned outward accordingly, and the unlocking is completed. It should be noted that when the housing 120 is in the locked position, the locking portion 121 is radially aligned with the first end 210, so when the housing 120 moves from the locked position to the unlocked position, the locking portion 121 can move to a position staggered from the first end 210 accordingly, so that the first end 210 can be turned outward.

[0045] In short, by operating the axial movement of the housing 120, the electrical connector can be locked and unlocked. Figure 1, in the traditional technology, for the self-locking method of steel ball clamping, when disassembling, it is necessary to rely on the disassembly force to push the steel ball 22 to retract into the communication hole 21a. In this application, by operating the axial movement of the outer shell 120, the flipping card plate 200 can be actively turned outwards to be separated from the plugging structure, realizing active unlocking. Therefore, when the plugging structure is disassembled from the self-locking plug end assembly 10, the resistance is small and the disassembly is smooth.

[0046] Please continue to refer to Figure 4 , in one embodiment, the self-locking plug end assembly 10 further includes a reset member 300. The reset member 300 is elastically connected to the outer shell 120 and the inner sleeve 110 to drive the outer shell 120 to move to or return to the locking position when the outer shell 120 is not driven, improving the stability of locking. Further, the reset member 300 can also be clamped between the outer shell 120 and the inner sleeve 110 to conveniently connect with the outer shell 120 and the inner sleeve 110 and drive the outer shell 120 to move relative to the inner sleeve 110.

[0047] Please refer to Figure 4 and Figure 5 , in one embodiment, the self-locking plug end assembly 10 further includes a hoop 400. The hoop 400 is sleeved outside the inner sleeve 110 and located on the outer peripheral side of the first end 210. The hoop 400 is an elastic member. Thus, the hoop 400 can be elastically tightened so that the first end 210 always remains in a relatively inturned state when not driven by the outer shell 120 or other acting forces, so as to be ready to be clamped with the plugging structure and remain clamped with the plugging structure. It can be understood that in this application, the elastic hoop 400 is used as the self-locking holding element, and the hoop 400 itself is not used as a direct clamping structure. Therefore, the hoop 400 can be made of a material with better elastic properties. Compared with the traditional technology that uses a polymer elastic catch to achieve self-locking and overcomes the elastic force of the elastic catch itself to achieve locking and unlocking, in this embodiment, an independent hoop 400 is used to provide the reset and holding functions, with strong reliability and high service life.

[0048] Further, the locking portion 121 can abut against the first end 210 by abutting against the hoop 400. The hoop 400 can be configured as an annular tension spring. Or, in other embodiments, the hoop 400 can also be configured as an elastic annular structure such as a silicone rubber ring or a rubber ring.

[0049] In addition, when the self-locking plug end assembly 10 does not include the hoop 400, the locking portion 121 can also be configured with a pushing structure similar to the pushing surface 122 to push the first end 210 to turn inwards to a state where it extends into the inner cavity 111 and maintain this state.

[0050] In one embodiment, the flipping card plate 200 can be hinged to the inner sleeve 110 to form a lever similar to that in a lever mechanism.

[0051] In one embodiment, one of the flipping card board 200 and the inner sleeve 110 may have a hook ring (not shown in the figure, the same below), and the other has a rotating shaft (not shown in the figure, the same below). Among them, the hook ring is an incomplete ring structure with an opening in the circumferential direction. The hook ring can be sleeved on the rotating shaft by expanding the opening, so that the flipping card board 200 and the inner sleeve 110 are rotationally matched. Such a setting takes into account both the stability of the rotational cooperation between the flipping card board 200 and the inner sleeve 110 and the convenience of installation. For example, in this embodiment, the adaptation part 220 can be configured as the above-mentioned hook ring, and the inner sleeve 110 has a rotating shaft.

[0052] Please refer to Figure 6 , and in combination with Figure 4 and Figure 5 , in one embodiment, the inner sleeve 110 includes a support body 114 located on the outer peripheral side. As Figure 4 , the adaptation part 220 has an adaptation groove 221, and the adaptation groove 221 is opened on the inner side of the adaptation part 220. The support body 114 can be movably inserted into the adaptation groove 221, that is, the support body 114 serves as a fulcrum in the lever mechanism to support the flipping movement of the flipping card board 200. In this embodiment, the installation of the flipping card board 200 can be realized by operating the insertion of the support body 114 into the adaptation groove 221, and the assembly is convenient. Moreover, in this embodiment, the support body 114 and the adaptation groove 221 adopt a simple plug-in cooperation method, which can realize the rotational cooperation between the flipping card board 200 and the inner sleeve 110, reduce the processing difficulty of the inner sleeve 110, and facilitate automatic processing.

[0053] It is easy to understand that the outer shell 120 and the inner sleeve 110 cooperate with each other to clamp the flipping card board 200 therebetween, so as to limit the lateral flipping of the flipping card board 200, that is, to limit the flipping of the flipping card board 200 along the axis parallel to the axis O and passing through the axis of the flipping card board 200. The first end 210 passes through the communication window 112, so the position of the first end 210 can be limited by the inner wall of the communication window 112, reducing the end offset of the first end 210, that is, limiting the radial rotational offset of the first end 210. That is to say, although in this embodiment, the flipping card board 200 and the inner sleeve 110 are only simply plugged and matched through the adaptation groove 221 and the support body 114, combined with the internal and external clamping and limiting of the inner sleeve 110 and the outer shell 120 and the limiting of the inner wall of the communication window 112, the flipping card board 200 does not have a large activity space in other directions except for lever rotation with the support body 114 as the fulcrum, and the position of the flipping card board 200 is clear and stable.

[0054] Please refer to Figure 4 and Figure 6, in one embodiment, the inner sleeve 110 has a receiving groove 115, and the second end 230 is movably located in the receiving groove 115. The opposite sides of the support body 114 are respectively used to enclose and form the receiving groove 115 and the communication window 112. That is to say, the support body 114 is located between the position where the receiving groove 115 is located and the position where the communication window 112 is located. The positions of the receiving groove 115, the support body 114 and the communication window 112 respectively correspond to the positions of the second end 230, the fitting groove 221 and the first end 210. Thus, when the fitting groove 221 is correspondingly inserted into the support body 114, the first end 210 is synchronously aligned with the communication window 112, and the second end 230 is synchronously aligned with the receiving groove 115. In this embodiment, the first end 210 passes through the communication window 112, and the second end 230 is located in the recessed receiving groove 115. Therefore, the installation space occupied by the flip card 200 can be reduced, which is convenient for miniaturization and integrated setting of the self-locking plug end assembly 10 and the electrical connector to which it is applied.

[0055] Combined with Figure 4 , in one embodiment, when the self-locking plug end assembly 10 forms a self-locking with the plugging structure, the support body 114 can provide support for the first end 210 by abutting against the groove wall of the fitting groove 221, so that the first end 210 is stably abutted and self-locked with the plugging structure. It is easy to understand that the first end 210 passes through the communication window 112 from the outside to the inside and is inserted into the inner cavity 111 in the form of an approximate pin shaft. The inner wall of the communication window 112 (including the part of the support body 114 used to form the communication window 112) can provide support for the first end 210, so that the first end 210 is stably limited and cooperated with the plugging structure.

[0056] In one embodiment, when the second end 230 is driven to abut against the bottom wall of the receiving groove 115 (i.e., after unlocking), at least part of the structure of the first end 210 is located in the communication window 112. It should be noted that after the self-locking plug end assembly 10 is unlocked, the first end 210 can completely withdraw from the inner cavity 111 and be located in the communication window 112. Or, in some embodiments, there is a certain interval between the cavity wall of the inner cavity 111 and the outer wall of the plugging structure. At this time, after the self-locking plug end assembly 10 is unlocked, a small part of the structure of the first end 210 can still be located in the inner cavity 111 and within the above interval. In other words, the embodiments of the present application do not limit that the first end 210 needs to completely withdraw from the inner cavity 111 to achieve unlocking.

[0057] Please refer to Figure 6 , combined with Figure 4 and Figure 5, in one embodiment, the support 114 has a support surface 114a. The support surface 114a has a first side 114b and a second side 114c. The first side 114b and the second side 114c are arranged facing each other. The first side 114b is relatively closer to the first end 210, and the second side 114c is relatively closer to the second end 230. The support surface 114a is inclined relative to the axis O of the inner sleeve 110, such that the first side 114b is closer to the inner cavity 111 than the second side 114c, that is, the maximum radial dimension of the region where the second side 114c is located is greater than the maximum radial dimension of the first side 114b. When the first end 210 extends into the inner cavity 111, at least a partial region of the first side 114b of the support surface 114a abuts against the bottom wall of the fitting groove 221. Since the support surface 114a is inclined and the side of the support surface 114a closer to the first end 210 (i.e., the first side 114b) is relatively lower, the support surface 114a allows the flip card 200 to rotate through a preset angle to extend into the inner cavity 111. After the flip card 200 rotates through the preset angle, the first side 114b (i.e., the lower side) of the support surface 114a will abut against the flip card 200, restricting further rotation of the flip card 200 and improving the position stability of the flip card 200.

[0058] The above preset angle can be configured to be 10° to 60°. Further, the above preset angle can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0059] Please continue to refer to Figure 6 , in combination with Figure 4 , in one embodiment, the inner sleeve 110 has a receiving ring groove 113 located on the outer peripheral side. The hoop 400 is disposed in the receiving ring groove 113. The communication window 112 is opened on the bottom wall of the receiving ring groove 113. The first end 210 passes through the receiving ring groove 113 and extends to the communication window 112. With such a setting, after the hoop 400 is installed in the receiving ring groove 113, it can be directly aligned with the first end 210. Moreover, through the receiving and limiting function provided by the receiving ring groove 113, the position stability of the hoop 400 can be improved, enabling the hoop 400 to stably provide an elastic holding force to the first end 210.

[0060] Please refer to Figure 6 and Figure 7 , in combination with Figure 4, in one embodiment, the inner sleeve 110 includes a sleeve body 116, a first ring body 117 and a second ring body 118. The first ring body 117 and the second ring body 118 are spaced along the axis O of the sleeve body 116 on the outer periphery of the sleeve body 116. The sides of the first ring body 117 and the second ring body 118 facing away from each other are respectively in contact with the outer shell 120 to define the moving stroke of the outer shell 120. With such a setting, the moving stroke of the outer shell 120 can be limited within a controllable range, reducing the risk of the outer shell 120 moving too much and causing the flipping clamping plate 200 to become loose, and reducing the risk of the outer shell 120 overly restricting the moving range of the flipping clamping plate 200. The accommodating groove 115 is recessed in a part of the second ring body 118, then another part of the second ring body 118 can protrude relative to the bottom wall of the accommodating groove 115 to form a protruding part of the support body 114. That is to say, in this embodiment, the accommodating groove 115 is recessed in the relatively protruding second ring body 118, which can not only accommodate the second end 230 of the flipping clamping plate 200 to reduce space occupation, but also make the remaining area of the second ring body 118 form a protruding part of the support body 114, so that the support body 114 supports the flipping movement of the flipping clamping plate 200 as a fulcrum. With such a setting, the second ring body 118 realizes three functions at the same time with a simple structure, namely, being in limit cooperation with the outer shell 120, being in rotational cooperation with the flipping clamping plate 200, and accommodating the second end 230. In other words, compared with the traditional self-locking method of clamping with the steel ball 22, the self-locking method of clamping with the flipping clamping plate 200 adopted in this application does not require a complex structure, so it is convenient for processing and production.

[0061] Please refer to Figure 4 , in one embodiment, the self-locking plug end assembly 10 further includes a snap ring 500. The snap ring 500 is embedded in the inner peripheral wall of the outer shell 120 and protrudes from the inner peripheral wall of the outer shell 120. The snap ring 500 is located on the side of the first ring body 117 away from the second ring body 118. The outer shell 120 further includes a third ring body 123 protruding from the inner peripheral surface. The third ring body 123 is located on the side of the second ring body 118 away from the first ring body 117. The axial interval between the third ring body 123 and the snap ring 500 is greater than the axial interval between the first ring body 117 and the second ring body 118.

[0062] When the outer shell 120 is in the unlocking position, the third ring body 123 abuts against the side of the second ring body 118 facing away from the first ring body 117. When the outer shell 120 is in the locking position, the snap ring 500 abuts against the side of the first ring body 117 facing away from the second ring body 118. Since the axial interval between the third ring body 123 and the snap ring 500 is greater than the axial interval between the first ring body 117 and the second ring body 118, the snap ring 500 and the third ring body 123 do not abut against the inner sleeve 110 at the same time, so that the outer shell 120 can move axially relative to the inner sleeve 110.

[0063] Further, the snap ring 500 can be configured as an elastomer and detachably installed on the inner wall of the outer shell 120, facilitating the formation of a nested limiting fit between the outer shell 120 and the first ring body 117 and the second ring body 118 of the inner sleeve 110. Further still, the flip plate 200 can be located between the first ring body 117 and the second ring body 118. Therefore, when the outer shell 120 and the inner sleeve 110 form a nested fit, the flip plate 200 is in a relatively enclosed space formed by the outer shell 120 and the inner sleeve 110, enabling the flip plate 200 to stably provide a self-locking function. In this embodiment, the radial dimensions of the outer shell 120 and the inner sleeve 110 can be adaptively adjusted to balance the flexibility of movement and the position stability of the flip plate 200.

[0064] Please refer to Figure 6 and Figure 7 and in combination with Figure 4 , in one embodiment, the second ring body 118 includes a guiding surface 118a, and the guiding surface 118a includes the above-mentioned supporting surface 114a. Further, a partial area of the guiding surface 118a can be inclined relative to the axis O of the inner sleeve 110, that is, the side of the guiding surface 118a close to the first end 210 is closer to the inner cavity 111 than other areas of the guiding surface 118a. Thus, on the one hand, it is convenient to form the inclined supporting surface 114a as described above. On the other hand, since the side of the guiding surface 118a close to the first end 210 is closer to the inner cavity 111 and has a smaller outer diameter, it is convenient to guide the hoop 400 into the receiving ring groove 113 and limit the axial position of the hoop 400. And the side of the guiding surface 118a close to the second end 230 is farther from the inner cavity 111, facilitating abutting and limiting against the third ring body 123.

[0065] Please refer to Figure 8 , in one embodiment, in the circumferential direction around the axis O of the inner sleeve 110, the size of the first end 210 is the same as or only has a small machining error compared to the size of the communication window 112. Thus, the inner wall of the communication window 112 can support the flip plate 200, reducing the probability of lateral flipping of the flip plate 200.

[0066] In the circumferential direction around the axis O of the inner sleeve 110, the size of the second end 230 is larger than the size of the first end 210, so as to reduce the risk of the second end 230 falling into the inner cavity 111 through the communication window 112 and improve the position stability of the flip plate 200.

[0067] Please refer to Figure 4 and Figure 5In one embodiment, the reset member 300 can be configured as a compression spring, and the two ends of the reset member 300 respectively abut the locking portion 121 and the first ring body 117. The reset member 300 can push the housing 120 to move axially, so that the housing 120 moves to a position where the snap ring 500 abuts against a side of the first ring body 117 away from the second ring body 118, that is, moves to the locking position.

[0068] See also Figure 3 In one embodiment, the self-locking plug assembly 10 further includes a conductive component 600, which is disposed in the inner cavity 111 and is used to electrically connect to the plug structure. Further, the conductive component 600 includes an insulator 610 and a terminal 620, and the insulator 610 is fixedly connected to the cavity wall of the inner cavity 111. The number of the terminals 620 can be multiple, and the multiple terminals 620 are respectively penetrated through the insulator 610.

[0069] 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.

[0070] 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 self-locking plug end component, characterized in that, The self-locking plug-in assembly comprises: A shell component, the shell component comprising an inner sleeve and an outer sleeve, the inner sleeve having an inner cavity for the plug-in structure to be plugged in, and the inner sleeve having a connecting window connecting the inner cavity with the circumferential outer side of the inner sleeve; A flip card, the flip card is located on the outer peripheral side of the inner sleeve, the flip card includes a first end, an adapter and a second end which are sequentially distributed, the adapter is rotatably matched with the inner sleeve, the first end extends into the inner cavity through the connecting window, the second end is located outside the inner sleeve, and the second end drives the first end to flip outward when driven; Wherein, the outer shell is sleeved on the inner shell and the flip card.

2. The self-locking plug end assembly according to claim 1, characterized in that, The housing has a locking portion, and the housing can move to a position where the locking portion abuts against the first end, and a position offset from the first end.

3. The self-locking plug end assembly according to claim 2, characterized in that, The inner side of the outer shell has a push surface, at least a part of the push surface is located on the side of the second end away from the first end, and the distance from the push surface to the inner sleeve gradually increases along the direction of the inner sleeve axis approaching the first end, and the outer shell can axially move relative to the inner sleeve between a locked position and an unlocked position; When the housing is in the locking position, the locking portion is radially aligned with the first end and abuts against the first end; When the housing is in the unlocking position, the pushing surface abuts against the second end, and the locking portion is offset from the first end.

4. The self-locking plug end assembly according to claim 3, characterized in that, It also includes a reset member, which elastically connects the outer shell and the inner sleeve to drive the outer shell to move to or restore to the locking position when the outer shell is not driven.

5. The self-locking plug end assembly according to claim 1, characterized in that, The self-locking plug-in end assembly further comprises a hoop, which is sleeved outside the inner sleeve and located at the outer peripheral side of the first end, and the hoop is an elastic member.

6. The self-locking plug end assembly according to claim 5, wherein, The inner sleeve has a receiving ring groove located on the outer peripheral side, the hoop is arranged in the receiving ring groove, the connecting window is opened on the bottom wall of the receiving ring groove, and the first end is penetrated through the receiving ring groove and extends to the connecting window.

7. The self-locking plug end assembly according to claim 1, characterized in that The inner sleeve comprises a support body located at the outer peripheral side, the adapting portion comprises an adapting groove, and the support body can be movably inserted into the adapting groove.

8. The self-locking plug end assembly according to claim 7, characterized in that, The inner sleeve has a receiving groove, the second end is movably located in the receiving groove, and the two opposite sides of the support body are respectively used to enclose the receiving groove and the communicating window; When the second end is driven to abut against the bottom wall of the accommodating groove, at least a portion of the structure of the first end is located in the communicating window.

9. The self-locking plug end assembly according to claim 8, characterized in that, The inner sleeve includes a sleeve body, a first ring body and a second ring body. The first ring body and the second ring body are arranged at intervals on the outer circumference of the sleeve body along the axis of the sleeve body. The sides of the first ring body and the second ring body facing away from each other are respectively used to abut against the outer shell to limit the movable stroke of the outer shell; the accommodating groove is recessed in a partial area of the second ring body, and another partial area of the second ring body protrudes relative to the bottom wall of the accommodating groove to form a protruding part of the support body.

10. An electrical connector, characterized in that, The electrical connector comprises a self-locking plug-in terminal assembly as claimed in any one of claims 1 to 9.

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