Connector float device

Abstract

The application discloses a connector floating device, and solves the problems of complex structure and serious abrasion of the connector after multiple plugging and unplugging of the prior art.The application comprises a primary floating structure and a secondary floating structure.The primary floating structure comprises a base and a central shaft, the base is internally provided with a floating spring, the floating spring is sleeved on the central shaft, one end of the floating spring is abutted against the base, and the other end of the floating spring is abutted against the central shaft;the central shaft is provided with a second pressing plate assembly, an axial floating assembly is arranged between the second pressing plate assembly and the base, and a radial floating assembly is arranged between the central shaft and the second pressing plate assembly;the central shaft is provided with the secondary floating structure between the central shaft and a joint.The connector floating device can synchronously compensate for three-dimensional errors of the male and female heads of the connector, such as the angle, the axial direction and the radial direction, and has the advantages of compact structure, smooth movement, high reset accuracy and the like.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a floating connector. Background Technology

[0002] Connectors, as core components for electrical connection, signal transmission, and fluid conduction, are widely used in data centers, industrial automation equipment, new energy vehicles, aerospace equipment, precision medical devices, rail transportation, and intelligent robots, among other fields. Their mating accuracy and connection stability directly determine the operational reliability, signal transmission quality, and lifespan of the entire device. In actual assembly and operation, the alignment and mating of the male and female connector heads are easily affected by multiple factors: Firstly, inherent factors such as component machining tolerances, equipment assembly positioning deviations, and installation reference errors directly lead to alignment deviations such as axial movement, radial offset, and angular tilt between the male and female heads. Secondly, acquired operating conditions such as mechanical vibration, thermal expansion and contraction, and load displacement during equipment operation further amplify these errors, making precise coaxial alignment of the male and female heads difficult and significantly increasing the difficulty of mating.

[0003] Currently, the rigid connection connectors commonly used in the industry lack any error compensation function. The male and female connectors rely entirely on fixed installation positions to achieve rigid mating. In scenarios with axial, radial, or angular errors, rigid mating is prone to problems such as mating jamming, incomplete mating, and stress-induced deformation and wear of the mating interface. These issues can range from minor transmission interruptions and abnormal fluid conduction to serious consequences such as connector shell cracking, damage to the mating interface, and even malfunctions of the entire device, failing to meet the requirements of high-precision and high-reliability applications.

[0004] To alleviate this problem, some existing technologies attempt to add simple floating structures. However, these traditional floating devices have significant technical limitations. Most can only achieve single-dimensional error compensation, either buffering axial movement or compensating for small-range radial offsets. They are completely unable to compensate for angular tilt errors between the male and female heads, resulting in extremely poor three-dimensional error synchronization and adaptation capabilities. For example, the floating connector disclosed in patent document CN213460311U only utilizes the axial compressibility of the compression spring to achieve the axial floating function of the floating head relative to the mounting base. At the same time, it only utilizes the lateral bending elastic deformation capability brought by the spring structure itself to achieve the radial floating function of the floating head relative to the mounting base. In addition, some existing multi-dimensional floating structures also have defects such as structural redundancy, large size, limited floating stroke, movement jamming, and poor reset accuracy. They not only occupy valuable assembly space inside the equipment, but also cause jamming and uneven wear during the mating process due to the poor movement of the floating mechanism. After long-term use, the floating performance is greatly degraded, making it difficult to adapt to harsh usage scenarios such as automated batch mating, high-vibration conditions, and precision alignment. As the high-end equipment industry rapidly develops towards high precision, high integration, and high reliability, the market has placed higher demands on the mating tolerance and multi-dimensional error compensation capabilities of connectors. There is an urgent need for a new type of floating device that can simultaneously compensate for the three-dimensional errors of the male and female connector heads in terms of angle, axial direction, and radial direction, and has a compact structure, smooth movement, and precise reset. This device can address the core shortcomings of existing technologies, ensure that the male and female heads can still be smoothly, stably, and accurately mated even in the presence of various alignment errors, and improve the overall performance of the connectors and the stability of equipment operation. Summary of the Invention

[0005] To address the shortcomings of the aforementioned background technology, this invention proposes a connector floating device, which solves the problems of existing connector floating devices having complex structures, reduced reliability, and lack of a secondary floating mechanism, which cannot compensate for the accumulation of errors during final precise positioning, leading to severe wear of the connector after repeated insertion and removal.

[0006] The technical solution of this invention is implemented as follows: A connector floating device includes a primary floating structure and a secondary floating structure. The primary floating structure includes a base and a central shaft passing through the base. A floating spring is provided inside the base and is sleeved on the central shaft. One end of the floating spring abuts against the base, and the other end abuts against the central shaft. A second pressure plate assembly is provided on the central shaft. An axial floating assembly is provided between the second pressure plate assembly and the base, and a radial floating assembly is provided between the central shaft and the second pressure plate assembly. A secondary floating structure is provided between the central shaft and the connector. The primary floating structure of this invention simultaneously achieves multi-degree-of-freedom floating compensation in radial, axial, and angular directions, solving the problems of structural redundancy, large size, and jamming and uneven wear during the mating process. Furthermore, the secondary floating structure achieves "completely precise" positioning and floating compensation.

[0007] Further preferably, the two-stage floating structure includes a connector tail end located at the tail of the connector, which is positioned at the head of the central shaft and is floatingly connected to the central shaft via a mounting housing. Preferably, the head of the central shaft has a connecting hole, the connector tail end is located within the connecting hole and is axially limited and fixed by the mounting housing, the mounting housing is connected to the central shaft, and a floating gap is left between the connector tail end and the mounting housing; this structural design achieves two-stage floating, allowing the connector to float radially or angularly relative to the central shaft.

[0008] In a further preferred embodiment, the floating spring abuts against the central shaft via a first pressure plate assembly; the first pressure plate assembly includes a floating spring pressure plate disposed within the base and a central shaft pressure plate disposed on the central shaft, the floating spring pressure plate being able to press against the central shaft pressure plate under the action of the floating spring; a radial floating gap is left between the outer wall of the central shaft pressure plate and the inner wall of the base.

[0009] Further optimization involves a hollow interior forming an inner hole, with a floating spring plate slidingly engaging with the inner hole. A first through hole is provided at the center of the floating spring plate, and a radial floating gap is left between the first through hole and the outer wall of the central shaft.

[0010] Further optimization involves a stepped inner hole with an inner limiting platform at one end. One end of the floating spring abuts against the inner limiting platform, and the other end abuts against the floating spring pressure plate. A conical platform is provided on the central shaft, and the inner ring surface of the inner limiting platform is a conical surface that mates with the conical surface of the conical platform. In the above design, the inner limiting platform and the conical platform adopt a surface-to-surface sliding fit.

[0011] In a further preferred embodiment, an inner limiting platform is provided inside the inner hole, and a conical platform is provided on the central shaft. The inner ring surface of the inner limiting platform is a conical surface that mates with the conical surface of the conical platform, and a ball is provided between the inner ring surface of the inner limiting platform and the conical surface of the conical platform. In the above structure, the inner ring surface of the inner limiting platform and the conical platform adopt a rolling fit.

[0012] In a further preferred embodiment, the second pressure plate assembly includes an axially floating spring pressure plate, which has a second through hole. The central shaft passes through the second through hole, and a radial floating gap is left between the second through hole and the outer wall of the central shaft.

[0013] In a further preferred embodiment, the axial floating assembly includes an axial floating spring and a connecting rod. The axial floating spring pressure plate is provided with a connecting hole, and the base is provided with a mounting hole corresponding to the connecting hole. The connecting rod passes through the mounting hole and is fixedly connected to the connecting hole, and the axial floating spring is sleeved on the connecting rod.

[0014] In a further preferred embodiment, the radial floating assembly includes an elastic element, and notches are provided on both sides of the lower part of the axial floating spring pressure plate. A guide pin sleeve is provided on the back of the central shaft head, and the guide pin sleeve extends to the notch. The elastic element is provided on the guide pin sleeve or on the lower part of the axial floating spring pressure plate, and the elastic element corresponds to the notch.

[0015] The beneficial effects of this invention are as follows: This invention not only has a first-level floating mechanism with axial, radial, and angular floating functions—that is, the guide pin, which cooperates with the guide pin sleeve of the floating device, drives the guide pin sleeve to achieve radial and angular offset floating, and axial floating is achieved through the axial over-insertion force of the connector—the first-level floating mechanism can achieve coaxiality between the central axis and the guide pin axis on the mating connector side; it also has a second-level floating mechanism, which enables the connector on the floating device side to float relative to the central axis. The connector floating device of this invention achieves "relatively precise" positioning and floating compensation through the first-level floating mechanism, and "completely precise" positioning and floating compensation through the second-level floating mechanism. The functional coordination between the first-level and second-level floating mechanisms ensures the rationality of the functional design and improves the synchronous adaptation capability. Furthermore, the radial floating component between the central axis and the second pressure plate assembly of this invention adopts an elastic element structure to ensure that the central axis of the floating device has an anti-deflection function and can automatically return to center after angular deflection; achieving precise coaxial alignment.

[0016] The connector floating device of the present invention is a novel floating device that can synchronously compensate for the three-dimensional errors of the male and female connectors in terms of angle, axial direction and radial direction. It is compact in structure, smooth in movement and precise in resetting, so as to solve the core shortcomings of the existing technology, and ensure that the male and female connectors can still be smoothly, stably and accurately inserted even in the presence of various alignment errors, thereby improving the overall performance of the connector and the stability of equipment operation. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 3 This is a bottom-view schematic diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the conical-conical fit between the base and the central shaft.

[0022] Figure 5 A schematic diagram showing the force exerted when the central shaft guide pin sleeve deflects.

[0023] Figure 6 This is a schematic diagram showing the simultaneous floating of angle and axis.

[0024] Figure 7Schematic diagram showing simultaneous floating of angle, axis, and radial directions.

[0025] Figure 8 This is a schematic diagram of a single-stage floating axial direction;

[0026] Figure 9 This is a schematic diagram of a first-level radial float.

[0027] Figure 10 This is a schematic diagram of the first-level floating angle.

[0028] Figure 11 This is a schematic diagram of radial secondary floating based on primary floating;

[0029] Figure 12 This is a schematic diagram showing an integrated design for the connector and its tail end. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1, as Figure 1 , 2As shown, a connector floating device includes a primary floating structure and a secondary floating structure; the primary floating structure corresponds to primary floating, and the secondary floating structure corresponds to secondary floating; primary floating mainly refers to the axial, radial, and angular floating of the central shaft relative to the base; secondary floating refers to the floating of the connector 11 relative to the central shaft. In this embodiment, the primary floating structure includes a base 1 and a central shaft 2 passing through the base 1. The central shaft 2 can be hollow and can be an integral structure or composed of two or more parts depending on the assembly relationship. The base 1 is hollow and a floating spring 3 is provided inside the base 1. The floating spring 3 is sleeved on the central shaft 2, with one end abutting against the base 1 and the other end abutting against the central shaft 2; the floating spring 3 provides axial force between the base 1 and the floating spring pressure plate 5, and can be a cylindrical spring, a truncated cone spring, a ball spring, or other spring forms that can provide axial force. A second pressure plate assembly is provided on the central shaft 2. An axial floating assembly is provided between the second pressure plate assembly and the base 1. The axial floating assembly and the axial floating assembly work together to achieve axial floating of the central shaft. A radial floating assembly is provided between the central shaft 2 and the second pressure plate assembly. The radial floating assembly works with the second pressure plate assembly to achieve radial floating of the central shaft. The axial floating assembly, the radial floating assembly, and the floating spring and floating spring pressure plate 5 work together to achieve angular floating of the central shaft. A two-stage floating structure is provided between the central shaft 2 and the joint 11, allowing the joint 11 to float radially or angularly relative to the central shaft 2.

[0032] In this embodiment, the secondary floating structure includes a connector tail end 111 located at the tail of the connector 11. The connector tail end 111 is located at the head of the central shaft 2 and is floatingly connected to the central shaft 2 via the mounting housing 8. The connector tail end 111 can float relative to the central shaft under the action of the mounting housing 8. In practical applications, primary floating cannot completely solve engineering application problems because the guide pin and guide pin sleeve also have machining tolerances and geometric tolerances. Without secondary floating compensation, the accumulation of these tolerances will directly accumulate between the male and female connectors, leading to problems such as jamming and severe wear during connector mating. Therefore, the connector floating device also needs to have a secondary function. In other words, primary floating achieves "relatively precise" positioning and floating compensation, while secondary floating achieves "completely precise" positioning and floating compensation. Primary floating ensures coaxiality between the central shaft and the guide pin axis on the mating connector side, while secondary floating ensures coaxiality between the connector axis on the floating device side and the mating connector axis.

[0033] In this embodiment, preferably, the mounting housing 8 can be used to hold and secure the tail end of the connector in the form of a clamp. The head of the central shaft 2 is provided with a connecting hole 202, and the tail end 111 of the connector is located in the connecting hole 202 and is axially limited and fixed by the mounting housing 8. One end of the tail end 111 of the connector is relatively fixed between the front part of the central shaft and the mounting housing. The tail end 111 of the connector can float relative to the front part of the central shaft or the mounting housing. This floating includes radial floating, angular floating, or axial floating, forming a two-stage floating.

[0034] Example 2, a connector floating device, is further optimized based on Example 1. In this example, the mounting housing 8 is connected to the central shaft 2 via screws 81, thus fixing the mounting housing to the central shaft. It should be noted that the mounting housing 8 can also be connected to the central shaft 2 via threads or an interference fit. The connector and its tail end can be designed as an integrated structure, such as... Figure 12 As shown; a split-structure design can also be adopted, such as Figure 1 , 4 As shown, when a split structure design is adopted, the tail end 111 of the connector can adopt an I-shaped connecting seat, and the mounting housing 8 is pressed on the lower boss of the I-shaped seat to achieve axial positioning; a radial floating gap is left between the tail end 111 of the connector and the mounting housing 8 to achieve radial floating, angular floating or axial floating.

[0035] In this embodiment, the floating spring 3 abuts against the central shaft 2 via a first pressure plate assembly. Specifically, the first pressure plate assembly includes a floating spring pressure plate 5 disposed within the base 1 and a central shaft pressure plate 23 disposed on the central shaft 2. The central shaft pressure plate 23 can be fixed to the central shaft by welding, bolting, or integral molding. The floating spring pressure plate 5 can abut against the central shaft pressure plate 23 under the action of the floating spring 3. A radial floating gap is left between the outer wall of the central shaft pressure plate 23 and the inner wall of the base 1 for radial floating.

[0036] In this embodiment, the second pressure plate assembly includes an axially floating spring pressure plate 6. The axially floating spring pressure plate 6 has a second through hole 601, through which the central shaft 2 passes. A radial floating gap is maintained between the second through hole 601 and the outer wall of the central shaft 2. The axial floating assembly includes an axially floating spring 4. The axial force of the connector is transmitted to the central shaft pressure plate 23 of the central shaft 2 via the connector tail end 111. The central shaft pressure plate 23 then transmits the force to the floating spring pressure plate 5, compressing the floating spring 3. The central shaft 2 transmits the axial force to the axially floating spring pressure plate 6, compressing the axially floating spring 4, thereby realizing the axial floating function of the connector floating device. Simultaneously, the central shaft 2 will achieve an overall angular offset, which in turn causes the connector tail end 111 on the floating device to float at an angle.

[0037] In this embodiment, the base 1 is hollow to form an inner hole 101. The floating spring pressure plate 5 is slidably engaged with the inner hole 101 and can move axially along the central axis under the action of the floating spring. A first through hole 501 is provided at the center of the floating spring pressure plate 5, and a radial floating gap is left between the first through hole 501 and the outer wall of the central axis 2 to facilitate the realization of radial floating.

[0038] In this embodiment, as a further preferred embodiment, the inner hole 101 is a stepped hole, with an inner limiting platform 102 at one end. A spring positioning groove can be provided on the back of the floating spring pressure plate 5. One end of the floating spring 3 abuts against the inner limiting platform 102, and the other end abuts against the spring positioning groove of the floating spring pressure plate, ensuring the stability of the floating spring. In this embodiment, a conical platform 201 is provided on the central shaft 2. The conical platform is located behind the axial floating spring pressure plate 6. The conical platform can be fixed to the central shaft by bolt connection or integral molding. The inner ring surface of the inner limiting platform 102 is a conical surface that mates with the conical surface of the conical platform 201. Figure 4 As shown; the conical surface fit has a certain centering effect on the central axis.

[0039] In this embodiment, the axial floating assembly includes axial floating springs 4 and connecting rods 41. At least two or more axial floating springs 4 are provided between the base 1 and the axial floating spring pressure plate 6 to provide axial force between the base 1 and the axial floating spring pressure plate 6. This embodiment uses four axial floating springs and four connecting rods as an example. The axial floating spring pressure plate 6 has four corresponding connecting holes 602, and the base 1 has mounting holes 103 corresponding to the connecting holes 602. The mounting holes 103 are open holes. The connecting rods 41 pass through the mounting holes 103 and are fixedly connected to the connecting holes 602. The fixed connection can be achieved by threading, welding, or interference fit. The axial floating springs 4 are sleeved on the connecting rods 41. The fixed fit between the connecting rods and the connecting holes tightens the axial floating spring pressure plate; moreover, the fit between the connecting rods and the open holes of the mounting holes 103 enables the axial floating of the floating spring pressure plate 6, ensuring stability while avoiding interference.

[0040] Example 3, as Figure 3 As shown, a connector floating device is described in this embodiment, which differs from Embodiment 2 in that, as... Figure 1 As shown, in this embodiment, an inner limiting platform 102 is provided inside the inner hole 101, and a conical platform 201 is provided on the central shaft 2. The inner ring surface of the inner limiting platform 102 is a conical surface that mates with the conical surface of the conical platform 201. A ball bearing 10 is provided between the inner ring surface of the inner limiting platform 102 and the conical surface of the conical platform 201. Specifically, a ball bearing 10 is embedded in the inner limiting platform 102, and the ball bearing 10 rolls with the conical platform 201. The inner limiting platform 102 is provided with at least two balls bearing 10, which converts the surface contact between the conical surfaces into rolling contact, reducing the friction between the conical surfaces.

[0041] In this embodiment, the radial floating assembly includes two symmetrically arranged elastic elements 9. The elastic elements 9 are disposed on the guide pin sleeve 21 or on the lower part of the axial floating spring pressure plate 6, and correspond to the notches. The elastic elements 9 can be components driven by elastic elements, or they can be themselves elastic bodies such as rubber. In this embodiment, the elastic elements are in the form of a spring plus two pins and are radially disposed inside the axial floating spring pressure plate 6. The two pins are symmetrical and extend out of the axial floating spring pressure plate. Notches are provided on both sides of the lower part of the axial floating spring pressure plate 6. A guide pin sleeve 21 is provided on the back of the head of the central shaft 2. The guide pin sleeve 21 has a conical structure at the front and a protrusion at the rear. The protrusion of the guide pin sleeve 21 extends to the notches and corresponds to the elastic elements 9. When the guide pin sleeve 21 on the central shaft deflects, the protruding rear part of the guide pin sleeve 21 compresses the elastic element 9. The elastic element 9 then provides a restoring force for the guide pin sleeve 21 to return to center, preventing the guide pin sleeve 21 from remaining in a large deflection state after deflection. That is, the function of the elastic element 9 is to limit the deflection range of the guide pin sleeve 21. After the guide pin sleeve deflects to a large extent, it can generate a correction effect through the restoring force; however, it allows the guide pin sleeve 21 to deflect to a smaller extent, as shown in Figure 5. In the initial state, the elastic element 9 and the guide pin sleeve 21 can have a small clearance fit (no contact), or they can be in contact with each other (just in contact), or the guide pin sleeve 21 can be in contact with the elastic element 9 and compress the elastic element 9 (compressing the elastic element and making direct contact). The above structural design ensures that the central shaft of the floating device has an anti-deflection function and can automatically return to center after angular deflection.

[0042] The invention achieves the following functions: Axial floating function: as follows Figure 8 As shown, when the connector requires axial compensation, after the connector is properly mated, insufficient equipment precision leads to tolerance accumulation, necessitating axial over-mating compensation. The axial force of the connector is then transmitted through the connector tail end 111 to the central shaft pressure plate 23 of the central shaft 2. The central shaft pressure plate 23 transmits this force to the floating spring pressure plate 5, compressing the floating spring 3. Simultaneously, the central shaft 2 transmits the axial force to the axial floating spring pressure plate 6, compressing the axial floating spring 4; thus achieving the axial floating function of the connector floating device. When the axial force of the connector is released, the central shaft 2 returns to its initial state under the action of the floating spring 3 and the compressed axial floating spring 4.

[0043] Radial floating function: such as Figure 9As shown, when the connector requires radial compensation, during the mating process, the guide pin that mates with the guide pin sleeve 21 of the floating device will drive the guide pin sleeve 21 to move radially. When the guide pin sleeve 21 on the central shaft is subjected to the force of the guide pin, the central shaft 2 will achieve radial floating as a whole, and at the same time, it will drive the connector tail end 111 on the floating device to float radially, where ΔX is the radial floating amount. When the male and female connectors are separated, under the action of the axial force of the floating spring 3, since the friction between the tapered surface 22 on the central shaft 2 and the ball 10 or the tapered surface on the floating device base that replaces the ball 10 is small, the axial force of the floating spring 3 drives the central shaft 2 to return to the central position.

[0044] Angle floating function: such as Figure 10 As shown, when the connector requires angle compensation, during the mating process, the guide pin that mates with the guide pin sleeve 21 of the floating device will cause the guide pin sleeve 21 to shift at an angle. When the guide pin sleeve 21 on the central shaft is subjected to the force of the guide pin, the central shaft 2 will shift at an angle as a whole, simultaneously causing the connector tail end 111 on the floating device to float at an angle, where Δθ is the amount of angle floating. When the male and female connectors are separated, under the action of the axial force of the floating spring 3, due to the low friction between the tapered surface 22 on the central shaft 2 and the ball 10 or the tapered surface on the floating device base that replaces the ball 10, the axial force of the floating spring 3 drives the central shaft 2 to return to the centered position. Figure 6 , 7 As shown, it can also achieve simultaneous floating of angle and axis, as well as simultaneous floating of angle, axis, and radial direction.

[0045] Second-level floating function: such as Figure 11 As shown, the secondary floating mechanism is mainly used to compensate for the accumulated tolerances between the guide pin and the guide pin sleeve 21, including radial or angular compensation. The radial distance ΔX1 between the joint axis on the floating device and the axis of the central shaft 2 is the radial floating amount of the secondary floating mechanism, and the angular deviation Δθ1 between the joint axis on the floating device and the axis of the central shaft 2 is the angular floating amount of the secondary floating mechanism. Secondary floating means that the joint on the side of the floating device can achieve radial floating, angular floating, or simultaneous radial and angular floating relative to the central shaft or the guide pin sleeve 21.

[0046] This invention features a first-level floating mechanism with axial, radial, and angular floating functions. This means that the guide pin, which engages with the guide pin sleeve of the floating device, drives the guide pin sleeve to achieve radial and angular offset floating. Axial floating is achieved through the axial over-insertion force of the connector. The first-level floating mechanism ensures coaxiality between the central axis and the guide pin axis on the mating connector side. It also features a second-level floating mechanism, referring to the floating of the connector mounted on the floating device side relative to the central axis. The connector floating device achieves "relatively precise" positioning and float compensation through the first-level floating mechanism, and "completely precise" positioning and float compensation through the second-level floating mechanism. The first-level floating mechanism ensures coaxiality between the central axis and the guide pin axis on the mating connector side, while the second-level floating mechanism ensures coaxiality between the axis of the connector on the floating device side and the axis of the mating connector.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A connector floating device, characterized in that: It includes a primary floating structure and a secondary floating structure. The primary floating structure includes a base (1) and a central shaft (2) passing through the base (1). A floating spring (3) is provided inside the base (1), and the floating spring (3) is sleeved on the central shaft (2). One end of the floating spring (3) abuts against the base (1) and the other end abuts against the central shaft (2). A second pressure plate assembly is sleeved on the central shaft (2). An axial floating assembly is provided between the second pressure plate assembly and the base (1), and a radial floating assembly is provided between the central shaft (2) and the second pressure plate assembly. A secondary floating structure is provided between the central shaft (2) and the joint (11).

2. The connector floating device according to claim 1, characterized in that: The secondary floating structure includes a connector tail end (111) located at the tail of the connector (11), the connector tail end (111) is located at the head of the central shaft (2), and the connector tail end (111) is floatingly connected to the central shaft (2) through the mounting housing (8).

3. The connector floating device according to claim 2, characterized in that: The head of the central shaft (2) is provided with a connecting hole (202), and the tail end (111) of the connector is located in the connecting hole (202) and is axially limited and fixed by the mounting housing (8). The mounting housing (8) is connected to the central shaft (2), and a floating gap is left between the tail end (111) of the connector and the mounting housing (8).

4. The connector floating device according to any one of claims 1 to 3, characterized in that: The floating spring (3) abuts against the central shaft (2) through the first pressure plate assembly. The first pressure plate assembly includes a floating spring pressure plate (5) disposed in the base (1) and a central shaft pressure plate (23) disposed on the central shaft (2). The floating spring pressure plate (5) can abut against the central shaft pressure plate (23) under the action of the floating spring (3). A radial floating gap is left between the outer wall of the central shaft pressure plate (23) and the inner wall of the base (1).

5. The connector floating device according to claim 4, characterized in that: The base (1) is hollow inside to form an inner hole (101). The floating spring pressure plate (5) slides with the inner hole (101). A first through hole (501) is opened at the center of the floating spring pressure plate (5). A radial floating gap is left between the first through hole (501) and the outer wall of the central shaft (2).

6. The connector floating device according to claim 5, characterized in that: The inner hole (101) is a stepped hole, and an inner limiting platform (102) is provided at one end of the stepped hole. One end of the floating spring (3) abuts against the inner limiting platform (102) and the other end abuts against the floating spring pressure plate. A conical platform (201) is provided on the central shaft (2). The inner ring surface of the inner limiting platform (102) is a conical surface that matches the conical surface of the conical platform (201).

7. The connector floating device according to claim 5, characterized in that: An inner limiting platform (102) is provided inside the inner hole (101), and a conical platform (201) is provided on the central shaft (2). The inner ring surface of the inner limiting platform (102) is a conical surface that matches the conical surface of the conical platform (201). A ball (10) is provided between the inner ring surface of the inner limiting platform (102) and the conical surface of the conical platform (201).

8. The connector floating device according to any one of claims 1 to 3, 6 and 7, characterized in that: The second pressure plate assembly includes an axial floating spring pressure plate (6), which has a second through hole (601). The central shaft (2) passes through the second through hole (601), and a radial floating gap is left between the second through hole (601) and the outer wall of the central shaft (2).

9. The connector floating device according to claim 8, characterized in that: The axial floating assembly includes an axial floating spring (4) and a connecting rod (41). The axial floating spring pressure plate (6) is provided with a connecting hole (602), and the base (1) is provided with a mounting hole (103) corresponding to the connecting hole (602). The connecting rod (41) passes through the mounting hole (103) and is fixedly connected to the connecting hole (602). The axial floating spring (4) is sleeved on the connecting rod (41).

10. The connector floating device according to claim 9, characterized in that: The radial floating assembly includes an elastic element (9), and notches are provided on both sides of the lower part of the axial floating spring pressure plate (6). A guide pin sleeve (21) is provided on the back of the head of the central shaft (2). The guide pin sleeve (21) extends to the elastic element at the notch. The elastic element (9) is provided on the guide pin sleeve (21) or at the lower part of the axial floating spring pressure plate (6), and the elastic element (9) corresponds to the notch.

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