Terminal protection sleeve and floating type connector

Abstract

The invention relates to a terminal protection sleeve and a floating type connector. The terminal protection sleeve is arranged outside a terminal set in a sleeving mode and comprises a fixed part and a floating part which are arranged at the two ends in a spaced mode, and a connecting part used for elastically connecting the fixed part and the floating part. The terminal group comprises a female terminal and a male terminal which can be plugged; the female terminal is provided with a supporting part and an elastic abutting part which are elastically connected, and the supporting part is arranged in the fixing part and fixedly connected with the female end circuit board; when the terminal group is in a plugging state, one side of the elastic abutting part abuts against the male terminal, and the other side of the elastic abutting part elastically abuts against the inner wall of the floating part. According to the terminal protection sleeve, the terminal is sleeved with the terminal protection sleeve, the protection sleeve is divided into the upper part and the lower part, and the elastic connecting part is arranged in the middle for connection, so that elastic floating of the protection sleeve is achieved, dynamic compensation force is provided for the terminal, the strength of the terminal is improved, and the conductive connection performance of the terminal is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to a terminal protective sleeve and a floating connector. Background Art

[0002] In the trend of miniaturization and high-density integration of modern electronic devices, as a key component for signal and energy transmission, the performance of connectors directly affects the system stability. Currently, the rigid contact structure of the elastic sheet terminals of connectors has shown significant defects in applications. Due to the lack of adaptive adjustment ability, the rigid contact structure becomes prominent in high-precision docking scenarios. Due to factors such as manufacturing tolerances, assembly errors, and thermal deformation during use, it is difficult for the mating interface of the connector to always maintain precise alignment. Rigid contact cannot buffer the mechanical stress caused by misalignment. During repeated plugging and unplugging, it is extremely easy to cause terminal bending, jack deformation, and even connector housing cracking. These irreversible damages not only shorten the service life of the connector, but also increase the equipment maintenance cost and downtime risk. Moreover, the elastic sheet terminals mostly use metal materials. During long-term plugging and unplugging, affected by the stress relaxation effect, the contact force will decay over time. When the contact force is below the critical threshold, the contact resistance of the terminal increases, and problems such as signal transmission jitter and attenuation occur. Especially in fields with complex vibration environments such as aerospace and automotive electronics, due to insufficient reliable contact performance of the elastic sheet terminals, intermittent open circuits are likely to occur, resulting in system function failure.

[0003] Therefore, in the prior art, terminal floating connection is often adopted, which mainly designs an elastic support part on the terminal to achieve dynamic floating. When the terminal is displaced due to plugging or vibration, the terminal can adaptively adjust the contact pressure to ensure that the contact force is always maintained within an effective range. However, this setting method usually makes the structure of the terminal very complex, directly resulting in complex manufacturing processes and poor consistency. Moreover, when the floating size is too large, excessive deformation will occur during long-term plugging, resulting in plastic deformation of the elastic support part. After removing the external force, the terminal cannot return to its original shape and size, and the contact force between the terminals will continuously decrease over time, affecting the connection performance of the terminals. Summary of the Invention

[0004] Based on this, an object of the present invention is to provide a terminal protective sleeve, which is sleeved outside the terminal. By dividing the protective sleeve into upper and lower parts and connecting them with an elastic connection part in the middle, elastic floating of the terminal protective sleeve is realized, so as to provide a dynamic compensation force for the terminal, improve the contact force of the terminal, and ensure the connection performance of the terminal.

[0005] Another object of the present invention is to provide a floating connector. By setting a terminal protective sleeve, a dynamic compensation force is provided for the multi-position floating connection of the male and female terminals; at the same time, by designing the elastic sheet structure of the female terminal, a greater contact force is provided for the contact support with the male terminal, and the electrical performance is more stable.

[0006] A terminal protection sleeve is sleeved outside a terminal group and includes:

[0007] Fixing parts and floating parts spaced at both ends, and a connecting part for elastically connecting the fixing parts and the floating parts;

[0008] The terminal group includes a pluggable female terminal and a male terminal; the female terminal is provided with a support part and an elastic abutting part that are extended and connected, the support part is arranged inside the fixing part and is fixedly connected to the female terminal circuit board; when the terminal group is in a plugged state, one side of the elastic abutting part abuts against the male terminal, and the other side elastically abuts against the inner wall of the floating part.

[0009] Further, the fixing part is provided with a clamping structure and / or a buckling structure, which are connected to the support part or the female terminal circuit board.

[0010] Further, a buckling hole is cut on the side wall of the fixing part, and an elastic arm buckle formed by integral punching is arranged on the side wall of the support part, and the elastic arm buckle is clamped in the buckling hole and abuts against the edge of the buckling hole.

[0011] Further, the connecting part is in a wavy line shape, and its two ends are respectively connected to the fixing part and the floating part, and are arranged coplanarly with the side walls of the fixing part and the floating part.

[0012] Further, a first opening is arranged at one end of the floating part away from the fixing part, and one end of the male terminal is plugged into the female terminal through the first opening; the orthographic projection of the first opening on the female terminal circuit board at least partially coincides with the orthographic projection of the elastic abutting part on the female terminal circuit board;

[0013] A second opening is arranged at one end of the fixing part close to the female terminal circuit board, and the female terminal is inserted into the terminal protection sleeve through the second opening.

[0014] Further, the support part is in a square ring structure, one end of the elastic abutting part is extended and connected to one side wall of the support part, and the other end is bent toward the male terminal side and elastically abuts against the male terminal.

[0015] Further, the female terminal includes two symmetrically arranged elastic abutting parts; the male terminal is in a sheet shape, and a plugging part is arranged at one end; both end faces in the width direction of the plugging part abut against the elastic abutting parts.

[0016] Further, the elastic abutting portion is provided with a first elastic piece and a second elastic piece that are extended and connected, and the first elastic piece and the second elastic piece are bent at a certain angle; the first elastic piece elastically abuts against the inner wall of the floating portion; at least one first contact point protruding away from the first elastic piece is arranged in the middle of the second elastic piece and is elastically conductively connected to the male terminal.

[0017] Further, a second contact point is arranged at the extended end of the second elastic piece; in the plugged state of the terminal group, the second contact point elastically abuts against the first elastic piece.

[0018] A floating connector includes: the terminal protective sleeve of the present invention.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) By providing a terminal protective sleeve and sleeving it outside the terminal group, a dynamic compensation force is provided for the terminal group, the contact force between the male and female terminals is increased, and the conductive performance of the terminal group is ensured;

[0021] (2) Fixing portions and floating portions are respectively arranged at both ends of the terminal protective sleeve, and are connected by an elastic connecting portion in the middle to realize the elastic floating of the protective sleeve;

[0022] (3) The connecting portion is wavy and is arranged coplanarly with the fixing portion and the floating portion, with a simple structure, which is beneficial to the miniaturized design of the terminal protective sleeve;

[0023] (4) By setting the elastic abutting portion of the female terminal as a bent and extended first elastic piece and a second elastic piece, the first elastic piece is pressed to abut against the terminal protective sleeve to support the elastic abutment of the second elastic piece and the male terminal, and the contact force during the plugging of the male and female terminals is increased;

[0024] (5) By providing a first elastic arm and a second elastic arm to jointly support the stable contact between the first contact point and the male terminal, support forces are provided from both ends of the first contact point, so that the contact between the first contact point and the male terminal is more stable and the contact reliability is stronger.

[0025] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0026] Figure 1 It is an exploded view of the floating connector provided by the embodiment of the present application;

[0027] Figure 2 It is an assembly schematic diagram of the floating connector provided by the embodiment of the present application;

[0028] Figure 3 It is a structural schematic diagram of the floating connector provided by the embodiment of the present application;

[0029] Figure 4 The first fixing method of the terminal protective sleeve provided by the embodiment of the present application;

[0030] Figure 5 The second fixing method of the terminal protective sleeve provided by the embodiment of the present application;

[0031] Figure 6 The third fixing method of the terminal protective sleeve provided by the embodiment of the present application;

[0032] Figure 7 The assembly schematic diagram of the female terminal and the terminal protective sleeve;

[0033] Figure 8 The first implementation manner of the female terminal;

[0034] Figure 9 The second implementation manner of the female terminal.

[0035] In the figure: 100 - connector; 10 - terminal protective sleeve; 11 - floating part; 111 - first opening; 1111 - first flanging structure; 1112 - second flanging structure; 112 - first floating wall; 113 - second floating wall; 12 - connecting part; 13 - fixing part; 131 - second opening; 1321 - clamping part; 1322 - positioning hole; 1323 - positioning boss; 1324 - catch; 1331 - buckling hole; 1332 - elastic arm buckle; 134 - first fixing wall; 135 - second fixing wall; 20 - male terminal; 21 - welding part; 22 - plugging part; 30 - female terminal; 31 - supporting part; 32 - elastic abutting part; 321 - first elastic sheet; 322 - second elastic sheet; 3221 - first contact; 3222 - second contact; 3223 - first elastic arm; 3224 - second elastic arm; 3225 - third elastic arm; 200 - male terminal circuit board; 300 - female terminal circuit board. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical direction", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation to the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or a connection through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] In the prior art, terminal floating connections are often used. It mainly designs an elastic support part on the terminal to provide the elastic force for supporting the floating of the terminal. When the terminal is displaced due to insertion or vibration, the terminal can adaptively adjust the contact pressure to ensure that the contact force is always maintained within an effective range. However, this setting method usually makes the structure of the terminal very complex, directly resulting in a complex manufacturing process and poor consistency. Moreover, when the floating size is too large, excessive deformation will occur during long-term insertion, resulting in plastic deformation of the elastic support part. After removing the external force, the terminal cannot return to its original shape and size, and the contact force between the terminals will continuously decrease with time decay, affecting the connection performance of the terminals.

[0040] Based on this, please refer to Figures 1-3 , an embodiment of the present application provides a terminal protective sleeve, which is sleeved outside the terminal group to provide a dynamic compensation force for the insertion floating of the terminal group to improve the contact force of the terminal. Specifically, the terminal protective sleeve 10 includes: fixed parts 13 and floating parts 11 spaced at both ends, and a connecting part 12 for elastically connecting the fixed parts 13 and the floating parts 11. The terminal group includes a pluggable female terminal 30 and a male terminal 20; the female terminal 30 is provided with an elastically connected support part 31 and an elastic abutting part 32. The support part 31 is arranged inside the fixed part 13 and is fixedly connected to the female terminal circuit board 300; when the male terminal 20 and the female terminal 30 are in the inserted state, one side of the elastic abutting part 32 abuts against the male terminal 20, and the other side abuts against the inner wall of the floating part 11.

[0041] The terminal protection sleeve 10 provided by the embodiment of the present application, when the male terminal 20 and the female terminal 30 are inserted, the female terminal 30 is extruded by the male terminal 20, causing the elastic abutting portion 32 to undergo elastic deformation and abut against the inner wall of the floating portion 11. When the floating portion 11 is in a state of unbalanced force, it will drive the connecting portion 12 to undergo elastic deformation to achieve the floating connection between the female terminal 30 and the male terminal 20, which can avoid irreversible damages such as terminal deformation or solder joint detachment caused by rigid insertion of the male terminal 20 and the female terminal 30. At the same time, the elastic deformation of the connecting portion 12 generates its own elastic force, enabling the floating portion 11 to apply a reverse compensation force to the female terminal 30, so as to avoid the female terminal 30 from generating plastic deformation due to excessive stress, reducing the contact force between the female terminal 30 and the male terminal 20, and further affecting the contact reliability of the terminal group.

[0042] Please refer to Figures 1-3 , further, in some embodiments, a first opening 111 is provided at one end of the floating portion 11 away from the fixing portion 13, and the male terminal 20 is inserted into the female terminal 30 through the first opening 111; the orthographic projection of the first opening 111 on the female terminal circuit board 300 at least partially coincides with the orthographic projection of the elastic abutting portion 32 on the female terminal circuit board 300. In this setting, the elastic abutting portion 32 is always located within the cavity of the terminal protection sleeve 10, and the female terminal 30 will not protrude from the terminal protection sleeve 10, resulting in the inability of the elastic abutting portion 32 to effectively abut against the floating portion 11, and thus the force of the floating portion 11 on the elastic abutting portion 32 disappears.

[0043] In the embodiment of the present application, the male terminal 20 is a sheet-like terminal, one end of which is provided with a welding portion 21 fixed to the male terminal circuit board 200, and the other end is provided with a plugging portion 22 for conducting connection with the female terminal 30. Preferably, the plugging portion 22 abuts against the elastic abutting portion 32 through the end face in the width direction, so that the elastic abutting portion 32 can generate a large amount of deformation, thereby generating a large contact force between the male terminal 20 and the female terminal 30 to improve the connection stability between the male terminal 20 and the female terminal 30. In this setting, two symmetric first flanging structures 1111 are provided at the first opening 111, on both sides in the thickness direction of the plugging portion 22, to limit the insertion direction of the plugging portion 22, so as to ensure elastic conduction between the end portions in the width direction of the plugging portion 22 and the elastic abutting portion 32, generating a large contact force to improve the electrical stability of the male and female terminals 30.

[0044] Further, the two first flanging structures 1111 are provided with relatively protruding arc-shaped surfaces, and the distance between the two arc-shaped surfaces is smaller than the width of the insertion portion 22, which is conducive to the smooth insertion of the male terminal 20 into the female terminal 30, avoiding the deflection of the insertion angle of the male terminal 20 and the female terminal 30 due to vibration and reducing the contact force between the male terminal 20 and the female terminal 30; at the same time, it avoids the scratching of the surface of the male terminal 20 caused by possible rubbing during the insertion process, which affects the electrical stability and service life of the male terminal 20.

[0045] Further, in some embodiments, the width of the welding portion 21 is greater than the width of the insertion portion 22, and two symmetric second flanging structures 1112 are further provided at the first opening 111. The distance between the two second flanging structures 1112 is smaller than the width of the welding portion 21, which is used to limit the insertion depth of the male terminal 20. In this way, when the male terminal 20 is inserted into the female terminal 30, when the welding portion 21 abuts against the second flanging structure 1112, the insertion stops, avoiding damage to the circuit board caused by excessive insertion of the male terminal 20. In this setting mode, the second flanging structure 1112 at least partially covers the elastic abutting portion 32, which can effectively protect the elastic abutting portion 32 and avoid the reduction of the contact stability between the elastic abutting portion 32 and the male terminal 20 due to deformation of the elastic abutting portion 32 caused by excessive contact during repeated plugging and unplugging.

[0046] Please refer to Figures 1-6 , further, in some embodiments, a second opening 131 is provided at one end of the fixing portion 13 close to the female terminal circuit board 300. The female terminal 30 is inserted into the terminal protection sleeve 10 through the second opening 131, so that the terminal protection sleeve 10 covers the outside of the female terminal 30 to provide a dynamic compensation force in the state of male-female terminal insertion.

[0047] Further, in some embodiments, the fixing portion 13 is provided with a clamping structure and / or a fastening structure, and is fixedly connected to the female terminal 30 or the female terminal circuit board 300 through the clamping structure and / or the fastening structure. Specifically, in some embodiments, the clamping structure is connected to the edge of the second opening 131 and extends toward the female terminal circuit board 300 or toward the outside of the second opening 131, and abuts against the female terminal 30 or the female terminal circuit board 300 in a plane perpendicular to the insertion direction.

[0048] Please refer to FIGS. 1-4. In some embodiments, the fixing portion 13 is provided with a clamping structure for clamping connection with the female end circuit board 300. As an example, the clamping structure is a clamping portion 1321 that extends towards the female end circuit board 300 and is connected to the edge of the second opening 131. Correspondingly, the female end circuit board 300 is provided with a positioning hole 1322, and the clamping portion 1321 is inserted into the positioning hole 1322, so that the fixing portion 13 is fixed in the plane perpendicular to the insertion direction; its floating portion 11 is displaced when receiving uneven abutting forces from the elastic abutting portion 32, driving the elastic deformation of its connecting portion 12 to generate an elastic force, thereby providing a reverse compensation force for the elastic abutting portion 32 and restricting the synchronous displacement of the fixing portion 13 and the floating portion 11 of the terminal protective sleeve 10.

[0049] Furthermore, in this setting manner, the clamping portion 1321 is further provided with a buckle, and the buckle is snap-connected with the positioning hole 1322 in the insertion direction, further positioning the terminal protective sleeve 10 in the insertion direction to prevent the terminal protective sleeve 10 from being displaced in the insertion direction in a vibrating environment, which may affect the protection effect of the terminal protective sleeve 10 on the terminal group.

[0050] Please refer to Figures 1-3 and Figure 5 In some other embodiments, the fixing portion 13 is provided with a clamping structure for clamping connection with the support portion 31. As an example, the clamping structure is a plurality of clamping portions 1321 that are connected to the edge of the second opening 131 and extend towards the outside, and the plurality of clamping portions 1321 are arranged at intervals. Correspondingly, a positioning boss 1323 is extended at one end of the support portion 31 close to the female end circuit board 300, and the positioning boss 1323 is inserted between two adjacent clamping portions 1321 to achieve the fixing of the fixing portion 13 and the support portion 31 in the plane perpendicular to the insertion direction.

[0051] Furthermore, in this setting manner, the clamping portion 1321 or the positioning boss 1323 is provided with a protruding hook 1324, so that the clamping portion 1321 and the positioning boss 1323 are snap-connected in the insertion direction, further positioning the terminal protective sleeve 10 in the insertion direction to prevent the terminal protective sleeve 10 from being displaced in the insertion direction in a vibrating environment, which may affect the protection effect of the terminal protective sleeve 10 on the terminal group.

[0052] Please refer to Figures 1-3 and Figure 6 In other embodiments, the fixing portion 13 is provided with a snap-fit structure for snap-fit connection with the support portion 31. As an example, a snap-fit hole 1331 is cut on the side wall of the fixing portion 13, and an elastic arm buckle 1332 formed by integral stamping is provided on the side wall of the support portion 31. The elastic arm buckle 1332 is clamped in the snap-fit hole 1331 and abuts against the edge of the snap-fit hole 1331 to achieve the fixed connection of the fixing portion 13 and the support portion 31.

[0053] It should be noted that the above are only some ways to fixedly arrange the fixing part 13, and the purpose is to relatively fix the fixing part 13 so as to realize the multi-position floating of the floating part 11. The fixing part 13 and the female terminal 30 or the female terminal circuit board 300 can also adopt other fixing methods to maintain the fixation, and this is not limited thereto.

[0054] Please refer to Figure 1 and Figures 7-9 , further, in some embodiments, the connecting part 12 is wavy, and its two ends are respectively connected to the fixing part 13 and the floating part 11. The floating of the floating part 11 in the XYZ directions is realized by compressing, stretching or bending the wavy connecting part 12.

[0055] In the embodiment of the present application, the female terminal 30 is a spring contact type terminal to ensure stable insertion with the male terminal 20. As a preferred embodiment, the supporting part 31 has a square structure, and the elastic abutting part 32 extends and connects to at least one side wall of the supporting part 31.

[0056] Preferably, the number of the elastic abutting parts 32 is two and they are symmetrically arranged. In this setting mode, the floating part 11 is set to have a square structure. In this way, when the terminal group is in the inserted state, the two elastic abutting parts 32 are extruded by the male terminal 20 and elastically deform outward to abut against the opposite two inner walls of the floating part 11. In this way, the elastic abutting parts 32 of the spring piece structure can stably contact the inner wall surface of the floating part 11, with a larger contact area and more uniform force.

[0057] Specifically, the floating part 11 includes two relatively arranged first floating walls 112 and two relatively arranged second floating walls 113, the elastic abutting part 32 elastically abuts against the first floating wall 112, and one end of the connecting part 12 is connected to the second floating wall 113; the first floating wall 112 protrudes from the second floating wall 113 along the insertion direction. In this setting mode, while ensuring the miniaturized design of the terminal protective sleeve 10, there is a larger space to reasonably design the structure of the connecting part 12, reduce the deformation amount of each deformation segment of the wavy connecting part 12, and avoid the fracture of the connecting part 12 or the plastic deformation caused by excessive deformation. After the external force is removed, the terminal protective sleeve 10 cannot restore its original shape and size, and loses the floating protection function for the terminal group.

[0058] Further, as a match, the fixing portion 13 is a square ring structure adapted to the supporting portion 31, and the fixing cover is arranged outside the supporting portion 31. Specifically, the fixing portion 13 includes two oppositely arranged first fixing walls 134 and two oppositely arranged second fixing walls 135, the first fixing portion 13 is arranged at a certain distance opposite to the first floating wall 112, the second fixing wall 135 is arranged opposite to the second floating wall 113, the second fixing wall 135 and the second floating wall 113 are respectively connected to the two ends of the connecting portion 12, and are arranged coplanar with the second fixing wall 135 and the second floating wall 113. Similarly, the height of the first fixing wall 134 protrudes from the height of the second fixing wall 135, further providing more sufficient deformation space for the connecting portion 12, and the distance between the second floating wall 113 and the second fixing wall 135 is increased, which is conducive to optimizing the structure of the connecting portion 12, so as to optimize its mechanical properties, and ensure that the connecting portion 12 always works within the safe elastic range, so as to ensure the reliability and safety of the connector 100.

[0059] Furthermore, in some embodiments, the elastic abutting portion 32 is provided with a first elastic piece 321 and a second elastic piece 322 which are extended and connected, the first elastic piece 321 elastically abuts against the inner wall of the floating portion 11, and the second elastic piece 322 is bent relative to the first elastic piece 321 toward a side away from the first floating wall 112 and elastically abuts against the male terminal 20. When the male terminal 20 and the female terminal 30 are plugged in, the second elastic piece 322 is elastically deformed by the compression from the male terminal 20, and at the same time, the first elastic piece 321 is compressed outward, so that the first elastic piece 321 abuts against the inner wall of the floating portion 11, thereby supporting the second elastic piece 322 to elastically abut against the male terminal 20, thereby improving the contact force of the male and female terminals. If the insertion position of the male terminal 20 is offset or in a vibrating environment, the squeezing force of the first spring piece 321 on the floating part 11 will be uneven. At this time, the connecting part 12 undergoes elastic deformation, so that the first spring piece 321 drives the floating part 11 to shift. At the same time, the elastic force of the connecting part 12 causes the floating part 11 to apply a reverse compensation force to the first spring piece 321 to prevent the female terminal 30 from being subjected to greater stress and causing elastic failure of the female terminal 30, thereby reducing the contact force between the female terminal 30 and the male terminal 20.

[0060] See also Figure 7 and Figure 8, Further, in some embodiments, at least one first contact 3221 protruding away from the first elastic piece 321 is provided in the middle of the second elastic piece 322, and is elastically conductively connected to the male terminal 20. In this setting, the portion where the first contact 3221 is connected to the first elastic piece 321 forms a first elastic arm 3223, and the first elastic arm 3223 forms a first included angle with the first elastic piece 321. When the first contact 3221 abuts against the male terminal 20, it is squeezed by the male terminal 20, so that the first included angle between the first elastic arm 3223 and the first elastic piece 321 becomes smaller, and at the same time, the first elastic piece 321 is squeezed toward the side away from the male terminal 20 and abuts against the inner wall of the floating portion 11, thereby forming a floating connection between the male terminal 20 and the female terminal 30. Preferably, the first included angle is less than or equal to 60°, which is beneficial to the second elastic arm 3224 to deflect and deform along the track and can provide a large supporting force.

[0061] Further, in some embodiments, a second contact 3222 is provided at the extended end of the second elastic piece 322; when the male terminal 20 and the female terminal 30 are in the inserted state, the second elastic piece 322 is subjected to the squeezing force of the male terminal 20, and the second contact 3222 is squeezed toward the first elastic piece 321, so that the second contact 3222 elastically abuts against the first elastic piece 321. At this time, the elastic abutting portion 32 is bent into an elastic closed ring structure. In this setting, a second elastic arm 3224 is formed between the first contact 3221 and the second contact 3222, and the second elastic arm 3224 forms a second included angle with the first elastic arm 3223. When the first contact 3221 is subjected to the squeezing force of the male terminal 20, first, the first included angle becomes smaller. In this process, the first elastic arm 3223 supports the first contact 3221 until the second contact 3222 abuts against the first elastic piece 321. Under the continuous action of the squeezing force, the second contact 3222 slides along the first elastic piece 321, the first included angle continues to become smaller, the second included angle gradually becomes larger, and the first elastic arm 3223 and the second elastic arm 3224 provide supporting forces from both ends of the first contact 3221 to jointly support the stable contact between the first contact 3221 and the male terminal 20, so that the contact between the first contact 3221 and the male terminal 20 is more stable and the contact reliability is stronger. Preferably, the second included angle is greater than 90°.

[0062] It can be understood that the second contact 3222 can be formed by bending the end of the second elastic piece 322. In some embodiments, the end of the second elastic piece 322 is bent toward the male terminal 20, so that the second contact 3222 has an arc-shaped contact structure protruding toward the first elastic piece 321. This is beneficial to reducing the sliding friction between the second contact 3222 and the first elastic piece 321, avoiding adverse effects such as terminal rust caused by rigid friction and scratching the surface of the female terminal 30, and improving the service life of the terminal.

[0063] Please refer to Figure 7 andFigure 9 , in some other embodiments, the end of the second elastic piece 322 is bent towards the inner side of the ring formed by the elastic abutting portion 32 to form a third elastic arm 3225. A third included angle is formed between the third elastic arm 3225 and the second elastic arm 3224. When the male terminal 20 presses the first contact point 3221, the third elastic arm 3225 abuts against the first elastic piece 321, and the third elastic arm 3225 provides a certain supporting force for the second elastic arm 3224. The first included angle and the third included angle gradually become smaller until the second contact point 3222 abuts against the first elastic piece 321. At this time, under the continuous action of the extrusion force, the second contact point 3222 slides along the first elastic piece 321, and the second included angle gradually becomes larger. At this time, the first elastic arm 3223, the second elastic arm 3224 and the third elastic arm 3225 jointly support the contact between the first contact point 3221 and the male terminal 20, providing supporting forces from both ends of the first contact point 3221, further improving the stability of the electrical connection between the male terminal 20 and the female terminal 30.

[0064] Please refer to Figures 1-9 , the embodiment of the present application further provides a floating connector 100, which is provided with a terminal protective sleeve 10 sleeved outside the terminal group. When the male terminal 20 and the female terminal 30 are plugged in, the elastic abutting portion 32 is elastically abutted against the floating portion 11 under extrusion. When the floating portion 11 floats and displaces, it drives the connecting portion 12 to deform. The elastic force of the connecting portion 12 provides a dynamic compensation force for the elastic abutting portion 32 to ensure the contact force between the female terminal 30 and the male terminal 20, improve the contact reliability, and avoid the elastic failure of the female terminal 30 due to excessive stress.

[0065] Compared with the prior art, the beneficial effects of the embodiment of the present application are as follows:

[0066] (1) By providing a terminal protective sleeve and sleeving it outside the terminal group, a dynamic compensation force is provided for the female terminal, the strength of the female terminal is improved, and the electrical connection performance of the terminal group is ensured;

[0067] (2) The two ends of the terminal protective sleeve are respectively provided with a fixed portion and a floating portion, and an elastic connecting portion is arranged in the middle to realize the elastic floating of the protective sleeve;

[0068] (3) The connecting portion is wavy and can be arranged coplanar with the fixed portion and the floating portion, with a simple structure, which is beneficial to the miniaturization design of the terminal protective sleeve;

[0069] (4) By setting the elastic abutting portion of the female terminal as the first elastic piece and the second elastic piece that are bent and extended, the first elastic piece is elastically abutted against the terminal protective sleeve under extrusion to support the elastic abutment of the second elastic piece and the male terminal, improving the contact force during the plugging of the male and female terminals;

[0070] (5) By setting the first elastic arm and the second elastic arm to jointly support the stable contact between the first contact and the male terminal, providing support forces from both ends of the first contact, so that the contact between the first contact and the male terminal is more stable and the contact reliability is stronger.

[0071] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and the present invention also intends to include these changes and modifications.

Claims

1. A terminal protection sleeve is sleeved outside a terminal group, and is characterized in that, Comprising: A fixed part and a floating part spaced at both ends, and a connecting part for elastically connecting the fixed part and the floating part; The terminal group includes a pluggable female terminal and a male terminal; the female terminal is provided with a support part and an elastic abutting part that are extended and connected, the support part is arranged inside the fixed part and is fixedly connected to the female terminal circuit board; when the male terminal and the female terminal are in a plugged state, one side of the elastic abutting part abuts against the male terminal, and the other side elastically abuts against the inner wall of the floating part.

2. A terminal protection sleeve according to claim 1, characterized in that: The fixed part is provided with a clamping structure and / or a fastening structure, which is connected to the support part or the female terminal circuit board.

3. A terminal protection sleeve according to claim 2, characterized in that: A buckle position hole is cut on the side wall of the fixed part, and an elastic arm buckle formed by integral punching is provided on the side wall of the support part, and the elastic arm buckle is clamped in the buckle position hole and abuts against the edge of the buckle position hole.

4. A terminal protection sleeve according to claim 1, characterized in that: The connecting part is in a wavy line shape, and its two ends are respectively connected to the fixed part and the floating part, and is arranged coplanar with the side walls of the fixed part and the floating part.

5. A terminal protection sleeve according to claim 1, characterized in that: One end of the floating part away from the fixed part is provided with a first opening, and one end of the male terminal is inserted into the elastic abutting part through the first opening; the orthographic projection of the first opening on the female terminal circuit board and the orthographic projection of the elastic abutting part on the female terminal circuit board at least partially overlap; One end of the fixed part close to the female terminal circuit board is provided with a second opening, and the female terminal is inserted into the terminal protection sleeve through the second opening.

6. A terminal protection sleeve according to claim 1, characterized in that: The support part is in a square ring structure, one end of the elastic abutting part is extended and connected to one side wall of the support part, and the other end is bent towards the side of the male terminal and elastically abuts against the male terminal.

7. A terminal protection sleeve according to claim 6, characterized in that: The female terminal includes two symmetrically arranged elastic abutting parts; the male terminal is in a sheet shape, and one end is provided with a plugging part; both end faces in the width direction of the plugging part abut against the elastic abutting parts.

8. A terminal protection sleeve according to claim 6, characterized in that: The elastic abutting part is provided with a first elastic sheet and a second elastic sheet that are extended and connected, and the first elastic sheet and the second elastic sheet are bent at a certain angle; the first elastic sheet elastically abuts against the inner wall of the floating part; the second elastic sheet is provided with at least one first contact point protruding in a direction away from the first elastic sheet, and is elastically conductively connected to the male terminal.

9. A terminal protection sleeve according to claim 8, characterized in that: A second contact point is arranged at the extended end of the second elastic sheet; when the terminal group is in a plugged state, the second contact point elastically abuts against the first elastic sheet.

10. A floating connector, characterized in that, Comprising: The terminal protection sleeve according to any one of claims 1-9.

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