Connector

Abstract

The invention relates to the field of electrical equipment, in particular to a connector. The connector is provided with a floating connecting end and a fixed connecting end which are connected with electrical equipment matched with the connector, the distance between the floating connecting end and the fixed connecting end can be changed, and the connector comprises a shell assembly and a terminal assembly which are respectively fixed with the floating connecting end and the fixed connecting end; the shell assembly is provided with a cavity for accommodating the terminal assembly, and at least one part of the terminal assembly can slide in the cavity. The connector is provided with the flexible terminal and the floating mechanism, so that a floating connecting end and a fixed connecting end are respectively established between the connector and a case of external equipment and between the connector and a PCB (Printed Circuit Board) in the case. Wherein the flexible terminal adopts a multi-strand metal wire braided structure and is matched with an axial sliding mechanism of the terminal seat to form a dynamic compensation system. When the distance between the fixed connecting end and the floating connecting end changes, the flexible terminal automatically adjusts the effective length through elastic deformation, thereby not only avoiding terminal damage caused by rigid pulling, but also ensuring the reliability of electrical connection.

Description

Technical Field

[0001] The present invention relates to the field of electrical equipment, and in particular to a connector. Background Art

[0002] At present, quick-plug connectors are widely used in almost all electronic and power-consuming industries such as automobiles, aerospace, communications, industrial control, electricity, and medical treatment. With the development of the industry, people are increasingly inclined to miniaturize equipment so that the equipment can occupy a small space while having the original functions. Therefore, various equipment manufacturers are trying to reduce the size of the equipment as much as possible.

[0003] Chinese patent CN115954711A discloses a quick-plug connector, which can solve the problem that the existing connector occupies a large space in the device and has a complicated connection method.

[0004] But it has the following problems: During the assembly of electrical equipment, the connector needs to achieve a reliable electrical connection between the equipment chassis and the internal PCB board. Traditional connectors mostly use a rigid structure design. When the PCB board is deformed due to production tolerances or the chassis is affected by external forces or temperature, the change in the spacing between the fixed end and the floating end can easily lead to stress concentration at the connection site, causing poor contact or mechanical damage. The existing improvement scheme compensates for deformation by adding elastic elements, but there are problems such as limited adjustment range, complex structure, and reduced reliability in long-term use. In addition, the traditional locking structure is easy to loosen in a vibrating environment, and there is a lack of effective anti-rotation design between the mounting hole and the connector, which may accelerate the wear of the contact surface and affect the stability of the connection. Summary of the invention

[0005] The purpose of the present invention is to provide a connector to solve the problem in the prior art that the connection end between the connector and the chassis is prone to poor contact due to deformation of the chassis.

[0006] The technical solution of the present invention is: a connector having a floating connection end and a fixed connection end connected to an electrical device matched therewith, wherein the distance between the floating connection end and the fixed connection end can be changed, and the connector comprises: The housing assembly and the terminal assembly are fixed to the floating connection end and the fixed connection end respectively; The housing assembly is provided with a cavity for accommodating the terminal assembly, and at least a portion of the terminal assembly can slide in the cavity.

[0007] Preferably, the terminal assembly includes a flexible terminal, and two ends of the flexible terminal are respectively connected to the housing assembly and the fixed connection end.

[0008] Preferably, the terminal assembly includes a terminal seat, the terminal seat is slidably connected to the housing assembly, and the terminal seat is provided with a connecting hole corresponding to the flexible terminal, and the connecting hole provides space for fixing the flexible terminal to the fixed connecting end.

[0009] Preferably, there is a floating mechanism, which includes a socket arranged on the terminal seat or the housing assembly, and a plug corresponding to the socket arranged on the terminal seat or the housing assembly; the socket and the plug are axially slidably matched.

[0010] Preferably, the connecting hole is constructed as a clamping mechanism, the flexible terminal passes through the clamping mechanism and is fixed to the fixed connecting end, and the flexible terminal is clamped to the clamping mechanism.

[0011] Preferably, the flexible terminal is provided with card slots on both sides, and the card connection mechanism includes an elastic card buckle and a fixed card buckle; The elastic clip has a clamping end, a deformation end and a fixed end; the clamping end, the deformation end and the fixed end of the elastic clip are all arranged in the same plane parallel to the axis, the clamping end of the elastic clip is clamped with a clamping slot of the flexible terminal, and the other clamping slot of the flexible terminal is clamped with the fixed terminal.

[0012] Preferably, the flexible terminal is provided with card slots on both sides, and the card connection mechanism only includes elastic card buckles; The elastic clip has a clamping end, a deformation end and a fixed end; the clamping end, the deformation end and the fixed end of the elastic clip are all arranged in the same plane parallel to the axis, the clamping end of the elastic clip is clamped with a clamping slot of the flexible terminal, and the other clamping slot of the flexible terminal is clamped with the fixed terminal.

[0013] Preferably, the shell assembly includes a base and a locking piece, a plug-in portion protruding from one end of the base, the chamber is opened axially through the plug-in portion, and the outer wall of the plug-in portion close to one end of the base cooperates with the locking piece; the floating connection end is formed between the adjacent end faces of the locking piece and the base.

[0014] Preferably, the inner wall of the locking member and the outer wall of the plug-in portion are provided with matching thread structures.

[0015] Preferably, the outer wall of the plug-in portion is provided with a limiting surface parallel to its own axis.

[0016] Compared with the prior art, the advantages of the present invention are: This connector is provided with a flexible terminal and a floating mechanism, so that a floating connection end and a fixed connection end are established between the chassis of the external device and the PCB board inside the chassis, respectively, thereby solving the problem of unstable assembly spacing caused by tolerance accumulation inside the electrical equipment and chassis deformation. Among them, the flexible terminal adopts a multi-strand metal wire braiding structure, which cooperates with the axial sliding mechanism of the terminal seat to form a dynamic compensation system. When the distance between the fixed connection end and the floating connection end changes, the flexible terminal automatically adjusts the effective length through elastic deformation, which not only avoids terminal damage caused by hard pulling, but also ensures the reliability of electrical connection.

[0017] The present application is provided with snap-on structures of various shapes, which improves the assembly efficiency, reliability of use and convenience of maintenance of the connector. During assembly, the fixed snap-on is used as a reference positioning point. The operator only needs to gently push the terminal and swing it along the trend. The flexible deformation characteristics of the elastic snap-on can automatically guide the snap-on end to accurately engage with the slot, achieving rapid installation and completely getting rid of the dependence of traditional welding on operating accuracy and process equipment. The symmetrical layout of the double snap-on forms a balanced clamping force, and the dynamic buffering of mechanical vibration by the elastic element can not only resist the risk of loosening caused by high-frequency vibration of the equipment, but also avoid the hidden damage to the material caused by thermal stress in the welding process. When maintenance is required, the modular characteristics of the snap-on structure support the independent disassembly and assembly of a single terminal without the need to replace the entire component, significantly reducing operation and maintenance costs. In addition, the design of this structure has strong scene adaptability - the deformation space of the elastic buckle is compatible with different installation deviations, so that it can not only stably cope with the severe vibration environment in industrial scenarios, but also realize flexible wiring and blind plug-in operations in precision equipment with limited space, so that it can still maintain long-lasting and stable electrical performance under complex working conditions, providing more efficient and safer connection solutions for new energy equipment, automation control and other fields.

[0018] (3) This application improves the stability while optimizing the assembly and maintenance efficiency: through the design of the non-circular mounting hole and the limiting surface, the connector can be effectively prevented from rotating loose, and the composite buckle structure can be combined to achieve stable locking of the terminal in a vibration environment; the sealing structure and the locking member work together to form multiple protections and enhance environmental adaptability. In addition, during assembly, the guide mechanism limits the axial single-degree-of-freedom movement to ensure fast and accurate positioning, and the elastic buckle design can realize tool-free disassembly and assembly of the terminal assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the male connector and the female connector of the present invention; Figure 2 This is an exploded view of the connector of the present invention; Figure 3 A cross-sectional view of the base in a preferred embodiment of the present invention; Figure 4 It is a cross-sectional view of the base in some embodiments of the present invention; Figure 5 This is a schematic diagram of assembling the connector and the chassis of the present invention; Among them: 1. Shell assembly, 12. Base, 121. Connecting portion, 1211. Limiting surface, 122. Abutting portion, 13. Locking piece, 131. Rib, 14. Sealing ring, 2. Terminal assembly, 21. Flexible terminal, 211. Card slot, 22. Terminal seat, 3. Floating mechanism, 31. Socket, 32. Plug, 4. Buckle structure, 41. Elastic buckle, 411. Snap-on end, 412. Deformation end, 413. Fixed end, 42. Fixed buckle. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] like Figure 1 and Figure 2 As shown, a connector is used to electrically connect with an electrical device. It includes a housing assembly 1 and a terminal assembly 2, wherein the housing assembly 1 is used to realize two functions, one is to carry the terminal assembly 2, and the other is to establish a detachable mechanical connection with the chassis of the electrical device. The electrical device has a PCB board arranged inside and a chassis located outside. The terminal assembly 2 is fixed to the PCB board by plugging or welding, and the housing assembly 1 is detachably connected to the chassis through the mounting holes reserved on the chassis.

[0026] In actual application, due to installation tolerance of the PCB board inside the device and deformation of the chassis, the distance between the connection end between the terminal assembly 2 and the PCB board and the connection end between the shell assembly 1 and the chassis is not fixed.

[0027] Therefore, in the application, a cavity for accommodating the terminal assembly 2 is provided in the housing assembly 1, and at least a portion of the terminal assembly 2 can slide in the cavity. The connection end between the terminal assembly 2 and the PCB board is set as a fixed connection end, and the connection end between the housing assembly 1 and the chassis is set as a floating connection end.

[0028] Specifically, the housing assembly 1 includes a base 12 and a locking member 13. The base 12 has a plug-in portion 121 protruding along its own axis on the cross section through the axis. The chamber for accommodating the terminal assembly 2 is opened along the axis of the plug-in portion 121. The connector described in the present application has two structural forms, including Figure 1 The male connector A and the female connector B shown are different in shape of the plug-in portion 121 and are used for matching the male and female ends. This application takes the male connector B as an example to explain the specific structure of the connector.

[0029] The base 12 adopts a split structural design, and an abutment portion 122 is provided perpendicular to the extension direction of the plug-in portion 121. The abutment portion 122 is specially designed with a contour in the radial direction so that it forms a non-equal diameter structure in the cross section perpendicular to the axis of the connector. Specifically, the outer edge contour of the abutment portion 122 exceeds the theoretical projection boundary of the plug-in portion 121 in at least one radial dimension. This geometric relationship ensures that when the plug-in portion 121 passes through the chassis mounting hole, the abutment portion 122 can form an effective contact surface with the inner wall of the chassis. This design optimizes the stress distribution by increasing the contact area, and at the same time uses the elastic deformation of the material to achieve adaptive fitting, thereby improving the installation adaptability of the connector on chassis of different thicknesses.

[0030] The locking member 13 adopts a sleeve-type structure, and its outer wall is provided with circumferentially distributed axial reinforcing ribs 131. These rib structures arranged at equal intervals not only enhance the overall rigidity of the locking member, but also increase the friction coefficient when the operator's hand contacts it through surface texture treatment. The locking member 13 realizes spiral transmission with the plug-in part 121 through the cooperation of internal and external threads, and the trapezoidal threads arranged on its inner wall form a self-locking fit with the external threads of the plug-in part 121. When the locking member 13 is screwed into place, its front end face and the end face of the abutment part 122 form a parallel clamping structure, which acts on the inner and outer walls of the chassis respectively, thereby further improving the stress distribution during clamping in conjunction with the elastic deformation ability of the locking member 13 itself.

[0031] The sealing ring 14 can be configured in two ways according to the installation requirements: when frequent disassembly is required, the sealing ring 14 is placed on the outside of the chassis to form a radial seal with the locking member 13; in a permanent installation scenario, the sealing ring 14 can be embedded in the inside of the chassis to form a static seal with the abutment. This changeable sealing structure not only ensures the IP protection level requirements, but also achieves sealing reliability under a wide temperature range through material selection (such as fluororubber). For quick installation requirements, the locking member 13 can adopt alternative connection solutions, such as circumferential snap fit or wedge key connection. The core design principle is to achieve axial positioning and circumferential limitation through geometric constraints.

[0032] like Figure 5As shown, in order to prevent the connector from being able to rotate around its own axis after being matched with the chassis, the mounting hole on the chassis used to connect to the connector adopts an asymmetric geometric shape (such as an elliptical shape or a keyway shape), and forms a shape match with the limiting plane 1211 set on the plug-in portion 121. The limiting plane 1211 extends axially and forms a contour feature that matches the mounting hole, and replaces line contact with surface contact, which significantly improves the anti-torsion ability. In this embodiment, the symmetrically arranged double limiting surface design not only balances the circumferential constraints, but also enhances the structural reliability through redundant design. When the connector is subjected to external torque, the interference between the limiting plane 1211 and the edge of the mounting hole converts the torque into contact stress, and realizes a self-protection mechanism through the yield strength of the material. This anti-rotation design, combined with the floating connection end, can maintain a stable electrical connection in a vibration environment.

[0033] The terminal assembly 2 includes a flexible terminal 21, and the two ends of the flexible terminal 21 are respectively connected to the housing assembly 1 and the fixed connection end. The flexible terminal 21 is formed by weaving a plurality of metal wires and can be bent in multiple directions. When one end of the flexible terminal 21 is connected to the PCB board, the flexible terminal 21 is in a bent state, so that when the distance between the fixed connection end and the floating connection end exceeds the preset value, the flexible terminal 21 can increase the length between its two ends by stretching; similarly, when the distance between the fixed connection end and the floating connection end is less than the preset value, the flexible terminal 21 continues to bend to reduce the length between its two ends. In this way, the problem of different distances between the fixed connection end and the floating connection end can be accommodated.

[0034] In order to achieve accurate guidance of the flexible terminal 21 during the extension or bending movement, a guiding and positioning mechanism adapted to the terminal structure is provided in this embodiment. It includes a terminal seat 22, which is slidably connected to the connector body (i.e., the housing assembly 1) through a floating mechanism 3. This connection method effectively limits its radial offset and rotational freedom while ensuring that the terminal seat 21 can be displaced in the axial direction, thereby providing a reliable constraint boundary for the deformation movement of the flexible terminal 21.

[0035] The floating mechanism 3 includes two parts: one is the socket 31 opened along the axial direction of the terminal seat 22, and the inner wall of the socket 31 is precisely machined to form a guide plane; the other is a cylindrical plug 32 set at a corresponding position on the housing assembly 1, and its outer contour is set in a geometric shape of the socket 31. When the two parts are assembled, the plug 32 is embedded in the socket 31 in a clearance fit manner, and a motion constraint is formed through the surface contact between the two. This design restricts all movements of the terminal seat 22 relative to the housing assembly 1 to the axial straight line, which not only ensures the guiding accuracy, but also avoids the terminal wear caused by deflection.

[0036] It is worth noting that under the same design concept, there are multiple specific configurations of the floating mechanism 3. According to the requirements of specific application scenarios, multiple derivative structures can be realized by adjusting the configuration of the plug and the slot, including the following three: The plug 32 is integrated into the terminal base 22 body, and a corresponding slot structure is provided in the housing assembly 1. This layout adjustment can optimize the utilization of the internal space.

[0037] A segmented plug and slot combination is adopted, and guide units are alternately arranged on the terminal base and the shell, which not only maintains the guiding function but also enhances the structural stability.

[0038] Multiple plugs 32 and corresponding sockets 31 are evenly distributed along the circumference, thereby forming a redundant restraint system, further improving the anti-deflection capability.

[0039] All of the above implementations follow the same motion constraint principle, and achieve unidirectional freedom control through the geometric shape of the guide element. These settings not only simplify the mold development process, but also show significant cost advantages in mass production. At the same time, the modular component design makes system maintenance more convenient. When the local structure is worn, a single guide unit can be quickly replaced without disassembling the connector as a whole.

[0040] A connection hole is provided on the terminal seat 22 corresponding to the flexible terminal 21, and the flexible terminal 21 passes through the connection hole and is connected to the fixed connection end. In some embodiments of the present application, the flexible terminal 21 is fixed to the connection hole by welding. In a preferred embodiment of the present application, the connection hole is constructed as a snap-fit ​​structure 4, and the part of the flexible terminal 21 passing through the connection hole is made of a hard conductor material, and a slot 211 is provided corresponding to the snap-fit ​​structure 4, and the snap-fit ​​structure 4 is snapped with the slot 211, so that the flexible terminal 21 can be detachably connected to the terminal seat 22.

[0041] The buckle structure 4 has various configurations, including a solution using only the elastic buckle 41 and a solution combining the elastic buckle 41 with the fixed buckle 42: like Figure 3 As shown, in the preferred solution of the present application that uses a combination of an elastic buckle 41 and a fixed buckle 42, the elastic buckle 41 has a clamping end 411, a deformation end 412 and a fixed end 413. The clamping end 411 is engaged with the clamping slot 211, the fixed end 413 is connected to the base 12, and the two ends of the deformation end 412 are respectively connected to the clamping end 411 and the fixed end 413.

[0042] The elastic buckle 41 is provided as a single one, and the clamping end 411, the deformation end 412 and the fixed end 413 of the elastic buckle 41 are all provided in the same plane parallel to the axis, the clamping end 411 of the elastic buckle 41 is clamped with a clamping slot 211 of the flexible terminal 21, and the other clamping slot 211 of the flexible terminal 21 is clamped with the fixed end 413. This arrangement can improve the clamping speed of the flexible terminal 21 while taking into account the clamping strength of the flexible terminal 21. It is only necessary to clamp one clamping slot 211 of the flexible terminal 21 with the fixed buckle 42 first, and then swing around the fixed buckle 42, so that the other clamping slot 211 of the flexible terminal 21 is clamped with the clamping end 411 of the elastic buckle 41, and the connection between the flexible terminal 21 and the terminal seat 22 can be completed.

[0043] In the present application, only the elastic buckle 41 is used. Figure 4 As shown, two elastic buckles 41 are symmetrically arranged, and both elastic buckles 41 have deformation ends 412 along the axial direction. When clamping, the two elastic buckles 41 are deformed radially through the deformation ends 412, so that a pair of clamping ends 411 enter the clamping grooves 211 on both sides of the flexible terminal 21 to complete the clamping.

[0044] In the assembly process, first install the terminal base 22 into the housing chamber to ensure that the plug 32 is properly matched with the jack. Then pass the flexible conductor through the connection hole and fix it with a snap mechanism. Align the plug-in portion 121 with the chassis mounting hole and insert it until the abutment portion 122 contacts the inner wall of the chassis. Finally, tighten the locking member 13 to the specified torque value to complete the connector installation. When disassembling, follow the reverse order, first loosen the locking member 13, then pull out the housing assembly 1, and finally release the snap to remove the terminal assembly 2.

[0045] The connector can be adapted to chassis walls of various thicknesses by replacing the plug-in parts 121 of different lengths. When maintenance is required, the entire connector can be removed from the chassis by simply removing the locking member 13 without disconnecting the PCB board.

[0046] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A connector having a floating connection end and a fixed connection end connected to an electrical device matched therewith, wherein the distance between the floating connection end and the fixed connection end can be changed, characterized in that: The connector comprises: The housing assembly (1) and the terminal assembly (2) are respectively fixed to the floating connection end and the fixed connection end; The housing component (1) is provided with a cavity for accommodating the terminal component (2), and at least a portion of the terminal component (2) is capable of sliding in the cavity.

2. A connector according to claim 1, characterized in that: The terminal assembly (2) comprises a flexible terminal (21), and two ends of the flexible terminal (21) are respectively connected to the housing assembly (1) and a fixed connection end.

3. A connector according to claim 2, characterized in that: The terminal assembly (2) comprises a terminal seat (22), the terminal seat (22) being slidably connected to the housing assembly (1), the terminal seat (22) being provided with a connection hole corresponding to the flexible terminal (21), the connection hole providing space for fixing the flexible terminal (21) to the fixed connection end.

4. A connector according to claim 3, characterized in that: A floating mechanism (3) is provided, the floating mechanism (3) comprising a socket (31) arranged on a terminal seat (22) or a housing assembly (1), and a plug (32) arranged on the terminal seat (22) or the housing assembly (1) corresponding to the socket (31); the socket (31) and the plug (32) are axially slidably matched.

5. A connector according to claim 4, characterized in that: The connection hole is constructed as a clamping mechanism, the flexible terminal (21) passes through the clamping mechanism and is fixed to the fixed connection end, and the flexible terminal (21) is clamped to the clamping mechanism.

6. A connector according to claim 5, characterized in that: The flexible terminal (21) is provided with card slots (211) on both sides, and the card connection mechanism comprises an elastic card buckle (41) and a fixed card buckle (42); The elastic clip (41) comprises a clipping end (411), a deformation end (412) and a fixed end (413); the clipping end (411), the deformation end (412) and the fixed end (413) of the elastic clip (41) are all arranged in the same plane parallel to the axis; the clipping end (411) of the elastic clip (41) is clipped with a clipping groove (211) of the flexible terminal (21), and the other clipping groove (211) of the flexible terminal (21) is sub-clipped with the fixed end (413).

7. A connector according to claim 5, characterized in that: The flexible terminal (21) is provided with card slots (211) on both sides, and the card connection mechanism only comprises an elastic card buckle (41); The elastic clip (41) comprises a clipping end (411), a deformation end (412) and a fixed end (413); the clipping end (411), the deformation end (412) and the fixed end (413) of the elastic clip (41) are all arranged in the same plane parallel to the axis; the clipping end (411) of the elastic clip (41) is clipped with a clipping groove (211) of the flexible terminal (21), and the other clipping groove (211) of the flexible terminal (21) is sub-clipped with the fixed end (413).

8. A connector according to claim 1, characterized in that: The housing assembly (1) comprises a base (12) and a locking member (13); a plug-in portion (121) is protruding from one end of the base (12); the chamber is axially opened through the plug-in portion (121); an outer wall of the plug-in portion (121) close to one end of the base (12) cooperates with the locking member (13); and the floating connection end is formed between adjacent end surfaces of the locking member (13) and the base (12).

9. A connector according to claim 8, characterized in that: The inner wall of the locking piece (13) and the outer wall of the plug-in portion (121) are provided with matching thread structures.

10. A connector according to claim 8, characterized in that: The outer wall of the plug-in portion (121) is provided with a limiting surface (1211) parallel to its own axis.

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