A universal ball head connected to a portable HUB converter

Abstract

The present invention relates to the field of converter technology, and discloses a portable HUB converter connected to a universal ball head, comprising a plug and a shell, and also comprising a mounting bracket provided inside the shell, wherein a flip block is rotatably connected to the mounting bracket, and a socket that fits the plug is fixedly connected to the flip block, a switching member for adjusting the socket angle is provided inside the shell, and a docking member is provided on the outside of the plug, wherein when the plug is inserted into the socket, the docking member triggers the action of the switching member, thereby driving the flip block to drive the socket to complete a 180-degree flip action, so as to achieve plug-in matching between the plug and the socket. This portable HUB converter connected to a universal ball head can effectively solve the problem in the prior art that when the device interface and the plug are inconsistent in direction, their positions need to be adjusted, and the anti-foolproof structure cannot actively adjust the socket angle to complete correct docking when the plug is in the wrong direction, and the user needs to rely on visual or tactile judgment to test the connection.

Description

Technical Field

[0001] The invention relates to the technical field of converters, in particular to a portable HUB converter connected with a universal ball head. Background Art

[0002] As a core component for multi-device signal transmission, hub converters require reliable and user-friendly plug and socket connections. Existing hub converter plug and socket connections typically utilize a fixed-direction, foolproof design, typically employing specifically shaped protrusions, grooves, or guides on the plug or socket to prevent reverse insertion.

[0003] The mechanical limit structure used to fix the direction in the traditional anti-foolproof structure can only adapt to a single plug-in angle. When the device interface layout is inconsistent with the preset direction of the plug, its position needs to be adjusted. In addition, the anti-foolproof structure cannot actively adjust the socket angle to complete the correct docking when the plug direction is wrong. Users need to rely on visual or tactile judgment to try plugging in. Especially in space-constrained or blind plug-in scenarios, the operational convenience and connection reliability are difficult to guarantee. Summary of the Invention

[0004] In response to the above-mentioned shortcomings of the prior art, the present invention provides a portable HUB converter connected with a universal ball head, which can effectively solve the problem in the prior art that when the device interface layout is inconsistent with the preset direction of the plug, its position needs to be adjusted, and the anti-foolproof structure cannot actively adjust the socket angle to complete correct docking when the plug direction is wrong, and the user needs to rely on visual or tactile judgment to test the connection.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a universal ball head connected portable HUB converter, comprising a plug and a housing, and further comprising:

[0007] A mounting frame is provided inside the housing, and the mounting frame is provided in multiple groups and arranged in an array along the center of the housing. A flip block is rotatably connected to the mounting frame, and a socket that fits the plug is fixedly connected to the flip block. A switching member for adjusting the angle of the socket is provided in the housing, and a docking member is provided on the outside of the plug;

[0008] When the plug is inserted into the socket, the docking member triggers the switching member to move, thereby driving the flip block to drive the socket to complete a 180-degree flip, so as to achieve the plug-in fit between the plug and the socket.

[0009] Furthermore, the docking member includes a bracket detachably mounted on the outside of the plug, both sides of the bracket are fixedly connected with a docking sleeve, and the docking sleeve is rotatably mounted on a movable frame through a connecting frame arranged on the outside of the docking sleeve.

[0010] Furthermore, a slot is provided on the inner wall of the docking sleeve, and the cross section of the slot is trapezoidal in design.

[0011] Furthermore, the switching member includes a docking rod that penetrates the shell and extends into the interior thereof, and the docking rods are provided in multiple groups and are distributed in an array along the center of the shell, with each group of the docking rods having two docking rods symmetrically distributed along the center of the shell. The docking rods are connected to the inner wall of the shell via elastic members provided on their outer sides, and magnetic members are provided in the docking rods and the movable frame.

[0012] When the polarity of the magnetic member in the docking rod is the same as that of the magnetic member in the movable frame, a magnetic repulsion force is generated when the two are close to each other to push the docking rod to move; when the polarity of the magnetic member in the docking rod is opposite to that of the magnetic member in the movable frame, a magnetic attraction force is generated when the two are close to each other to lock the position of the docking rod;

[0013] The docking rod is slidably connected to a clamping block that fits the inner wall of the clamping slot through a movable slot provided inside the docking rod, and the clamping block is connected to the inner wall of the movable slot through a round wire spring provided on its outer surface.

[0014] Furthermore, the mounting frame is slidably connected to a rack through a slotted hole provided on the outside thereof, and the outer surface of the flip block is fixedly connected to a gear ring meshing with the rack.

[0015] Furthermore, the rack is slidably connected to an abutment block through a guide groove provided on its outside, and two abutment blocks are provided and symmetrically distributed along the center of the rack. The abutment block is connected to the inner wall of the guide groove through a return spring provided on its outside. The side of the abutment block away from the rack is designed as an arc surface, and the bottom of the abutment block is designed as a slope.

[0016] Furthermore, the housing is slidably connected to a push plate that fits the arc surface of the abutment block through an auxiliary rod arranged inside the housing, and a compression spring is sleeved on the outer surface of the auxiliary rod.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention is provided with a docking piece and a switching piece. When the plug is inserted into the orientation deviation, the magnetic piece of the movable frame in the docking piece and the magnetic piece of the docking rod form a magnetic domain distribution of the same polarity, and the magnetic repulsion force pushes the docking rod to move into the shell. The rack is driven to slide through the mechanical coupling between the push plate and the inclined surface of the abutment block, and the gear pair of the rack and the gear ring drives the flip block to rotate to complete the socket orientation calibration. The switching piece is triggered by magnetic coupling to drive the flip block to flip 180 degrees, thereby realizing automatic orientation calibration of the socket and the plug. There is no need to manually adjust the plugging angle. Through the polarity distribution of the magnetic piece, the socket and the plug are automatically calibrated. It automatically determines the plug-in orientation, and the same poles repel each other to trigger angle calibration, while the opposite poles attract each other to lock directly, realizing the dual modes of "plug and play" or "direct locking". When the plug is in the correct orientation, the opposite poles of the magnetic parts attract each other to drive the docking rod to directly insert into the docking sleeve and lock it; when the orientation is wrong, the same poles repel each other to trigger the calibration of the flip block, without manual judgment, and when the docking rod is plugged in for the first time, a single set of push plates drives the rack to flip the flip block in the forward direction; when plugged in again, the other set of push plates drives the rack in the reverse direction to realize the reverse rotation of the flip block, and the reciprocating motion mechanism balances the force on the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the three-dimensional separation structure of the housing according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional separation structure of the flip block and the shell according to an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the three-dimensional separation structure of the docking piece according to an embodiment of the present invention;

[0024] Figure 5 For the embodiment of the present invention Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0025] Figure 6 Schematic diagram of the three-dimensional separation structure of the switching member according to an embodiment of the present invention;

[0026] Figure 7 For the embodiment of the present invention Figure 6 A schematic diagram of the structure with a partial enlargement at point B in the middle;

[0027] Figure 8This is a schematic diagram of the three-dimensional separation structure of the mounting frame and the rack according to an embodiment of the present invention;

[0028] Figure 9 For the embodiment of the present invention Figure 8 A schematic diagram of the structure with a partial enlargement at point C in the middle;

[0029] Figure 10 Schematic diagram of the three-dimensional state transformation of the socket according to an embodiment of the present invention.

[0030] The numbers in the figure represent: 1. plug; 11. docking part; 111. bracket; 112. docking sleeve; 113. movable frame; 114. magnetic part; 115. slot; 2. shell; 21. mounting frame; 22. flip block; 23. socket; 24. switching part; 241. docking rod; 242. block; 243. rack; 244. gear ring; 245. abutment block; 246. push plate. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Example:

[0034] See also Figures 1-10 The present invention provides a technical solution: a universal ball head connected to a portable HUB converter, comprising a plug 1 and a housing 2, and further comprising:

[0035] A mounting bracket 21 is provided inside the housing 2, and the mounting bracket 21 is provided in multiple groups and arranged in an array along the center of the housing 2. A flip block 22 is rotatably connected to the mounting bracket 21, and a socket 23 that fits the plug 1 is fixedly connected to the flip block 22. A switching member 24 for adjusting the angle of the socket 23 is provided inside the housing 2, and a docking member 11 is provided on the outside of the plug 1;

[0036] When the plug 1 is inserted into the socket 23 , the docking member 11 triggers the switching member 24 to operate, thereby driving the flip block 22 to drive the socket 23 to complete a 180-degree flip action, thereby achieving the plug-in fit between the plug 1 and the socket 23 .

[0037] The docking member 11 includes a bracket 111 detachably mounted on the outside of the plug 1 , with docking sleeves 112 fixedly connected to both sides of the bracket 111 , and the docking sleeves 112 are rotatably mounted on a movable frame 113 via a connecting frame arranged on the outside thereof.

[0038] A slot 115 is defined on the inner wall of the docking sleeve 112 , and the cross section of the slot 115 is trapezoidal in design.

[0039] The switching member 24 includes a docking rod 241 that penetrates the housing 2 and extends into the interior thereof. The docking rods 241 are provided in multiple groups and arranged in an array along the center of the housing 2. Each group of docking rods 241 includes two docking rods 241 that are symmetrically distributed along the center of the housing 2. The docking rods 241 are connected to the inner wall of the housing 2 via elastic members provided on their outer sides. Magnetic members 114 are provided in both the docking rods 241 and the movable frame 113.

[0040] When the polarity of the magnetic member 114 in the docking rod 241 is the same as that of the magnetic member 114 in the movable frame 113, a magnetic repulsion force is generated when the two are close to each other, pushing the docking rod 241 to move. When the polarity of the magnetic member 114 in the docking rod 241 is opposite to that of the magnetic member 114 in the movable frame 113, a magnetic attraction force is generated when the two are close to each other, locking the docking rod 241 in place.

[0041] The docking rod 241 is slidably connected to a clamping block 242 that fits in the inner wall of the clamping slot 115 through a movable slot provided therein, and the clamping block 242 is connected to the inner wall of the movable slot through a round wire spring provided on its outer surface.

[0042] The mounting frame 21 is slidably connected to a rack 243 through a slot hole provided on the outer side thereof, and a gear ring 244 meshing with the rack 243 is fixedly connected to the outer surface of the flip block 22 .

[0043] The rack 243 is slidably connected to the abutment block 245 through a guide groove provided on its outer side, and the abutment block 245 is provided with two and is symmetrically distributed along the center of the rack 243. The abutment block 245 is connected to the inner wall of the guide groove through a return spring provided on its outer side. The side of the abutment block 245 away from the rack 243 is designed with an arc surface, and the bottom of the abutment block 245 is designed with a slope.

[0044] The housing 2 is slidably connected to a push plate 246 that fits the arc surface of the abutment block 245 through an auxiliary rod arranged inside the housing 2, and a compression spring is sleeved on the outer surface of the auxiliary rod.

[0045] The principle and advantages of a universal ball head connected to a portable HUB converter:

[0046] In HUB converter engineering applications, the plug-in connection structure generally uses a directional mechanical limit lock mechanism. This mechanism prevents incorrect insertion by creating topological constraints such as bosses, grooves, or guide keys on the mating surface. The mechanical limit components in traditional anti-mock mechanisms only have the ability to adapt to a single array angle. If the device interface plug 1 is misaligned when mated, manual adjustment of the plug 1 is required to complete the connection.

[0047] To address the above problem, when the external plug 1 is plugged into the HUB converter, if the plug 1 does not maintain a precise plug-in orientation with the socket 23 as it approaches the housing 2, the magnetic component 114 in the movable frame 113 and the magnetic component 114 in the docking rod 241 will form a distribution of magnetic domains with the same polarity. Based on the principle of magnetic repulsion, the magnetic components with the same polarity generate a repulsive force, driving the docking rod 241 to move linearly along its axis toward the inside of the housing 2. During this movement, the support plate on the outer circumferential surface of the docking rod 241 pushes the push plate 246 to move synchronously. The inclined working surface of the push plate 246 and the arc surface of the abutment block 245 form a line contact transmission pair. The abutment block 245 is subjected to a radial extrusion force through the mechanical coupling effect of the inclined surface, thereby driving the rack 243 to slide along the slot of the mounting frame 21 with damping. Because the rack 243 and the ring gear 244 of the flip block 22 form a gear pair transmission, the linear displacement of the rack 243 is converted into the rotational motion of the flip block 22 through the gear pair transmission. Based on the specific transmission ratio parameter design, when the rack 243 reaches the maximum stroke, the flip block 22 realizes a 180-degree axis flip, thereby completing the calibration process of the plugging orientation of the socket 23 and the plug 1.

[0048] Angle calibration can be completed automatically without visual assistance, which is especially suitable for scenarios with limited space or blind insertion. The magnetic part 114 of the movable frame 113 in the docking part 11 and the magnetic part 114 of the docking rod 241 form a homopolar magnetic domain distribution, and the magnetic repulsion force pushes the docking rod 241 to move into the shell 2. The rack 243 is driven to slide through the inclined mechanical coupling of the push plate 246 and the abutment block 245. The gear pair transmission of the rack 243 and the gear ring 244 drives the flip block 22 to rotate, completing the orientation calibration of the socket 23. The magnetic coupling triggers the switching part 24 to drive the flip block 22 to flip 180 degrees, thereby realizing automatic orientation calibration of the socket 23 and the plug 1. There is no need to manually adjust the plugging angle, which reduces the difficulty of operation. The automated process of magnetic coupling triggering and mechanical transmission enables the plug 1 to be correctly docked through self-calibration of the mechanism when inserted in any orientation.

[0049] The docking member 11 includes a detachable bracket 111, a docking sleeve 112 and a movable frame 113. The bracket 111 is mounted on the outside of the plug 1 by magnetic attraction or snap-on. When parts are worn, the docking member 11 can be removed and replaced separately without the need for overall maintenance.

[0050] It is worth noting that the movement mode of the rack 243 in the slot is damped sliding. Its damping characteristics can suppress the free displacement of the rack 243 when there is no external force driving it, effectively avoiding the risk of malfunction of the transmission mechanism caused by changes in the spatial position of the HUB converter. The docking rod 241 and the magnetic member 114 in the movable frame 113 both adopt an electromagnet structure, which is convenient for the operator to actively control. The polarity distribution of the magnetic member 114 automatically determines the plug-in orientation. The same poles repel each other to trigger angle calibration, and opposite poles attract each other to directly lock, realizing the dual modes of "plug and play" or "direct locking". When the plug 1 is in the correct orientation, the opposite poles of the magnetic member 114 attract each other and drive the docking rod 241 to directly insert into the docking sleeve 112 for locking; when the orientation is incorrect, the same poles repel each other to trigger the flip block 22 to calibrate, without the need for manual judgment.

[0051] During the movement of rack 243, the side of the inclined surface of rack 243 that contacts the push plate 246 generates a lateral force component directed toward the non-contacting side, forcing the bottom inclined surface of abutment block 245 into contact with the flat surface of push plate 246. As rack 243 continues to move, guided by the inclined surface, abutment block 245 shifts along the guide groove, creating an offset arrangement relative to push plate 246. Because the two push plates 246 maintain a fixed spacing, this offset arrangement effectively prevents motion interference from hindering the normal movement of rack 243. When push plate 246 separates from abutment block 245, a return spring on the outside of abutment block 245 resets it, preparing it for the next mating process. The return spring automatically returns abutment block 245 to its original position after separation of push plate 246. The elastic element on the outside of docking rod 241 resets it after the magnetic force dissipates. The energy storage and release of the elastic elements (compression spring, coil spring) ensures that the mechanism returns to its initial state after each mating cycle, supporting repeated operation cycles and preventing mechanical jamming.

[0052] It is worth noting that the abutment blocks 245 and push plates 246 at either end of the rack 243 utilize an alternating contact drive mode. During initial contact, a single set of push plates 246 forms a contact pair with the abutment blocks 245. Driven by the gear pair, the flip block 22 drives the internal socket 23 to complete a 180-degree flip around its axis. Upon further contact, the other set of push plates 246 reversely drives the rack 243, causing the rack 243 to move in the opposite direction along the slot, achieving a 180-degree reverse rotation of the socket 23 caused by the flip block 22. During initial insertion, a single set of push plates 246 drives the rack 243, causing the flip block 22 to flip forward. Upon further insertion, the other set of push plates 246 reversely drives the rack 243, achieving reverse rotation of the flip block 22. This reciprocating motion balances the forces acting on the cables, ensuring bidirectional angle adjustment of the flip block 22 and preventing excessive entanglement of the motherboard and socket 23 cables caused by unidirectional rotation of the flip block, thereby ensuring the long-term stability of the connection between the socket 23 and the motherboard.

[0053] After the socket 23 and the plug 1 have been aligned, the docking rod 241 and the magnetic member 114 within the movable frame 113 cease to function, and the magnetic coupling between the docking rod 241 and the movable frame 113 disappears. Since the outer elastic member is in a stretched, energy-storing state when the docking rod 241 moves into the housing 2, when the magnetic attraction disappears, the elastic member releases its elastic potential energy, driving the docking rod 241 back to its original position, and its end is finally inserted into the docking sleeve 112, completing the positioning.

[0054] During the plugging process, the internal block 242 of the docking rod 241 gradually contacts the outside of the docking sleeve 112. As the docking rod 241 penetrates the docking sleeve 112, the block 242 is squeezed axially and retracted into the movable groove, compressing the coil spring. When the docking rod 241 reaches its maximum travel, the block 242 disengages the restraining area on the inner wall of the docking sleeve 112. The coil spring releases energy, pushing the block 242 into the slot 115, completing the mechanical limit lock of the docking rod 241 and significantly enhancing the connection stability of the plug 1 on the hub converter.

[0055] When the plug 1 and the socket 23 in the housing 2 are initially correctly connected, the docking rod 241 and the magnetic member 114 in the movable frame 113 form a distribution of oppositely polarized magnetic domains. The magnetic member 114 generates an attractive force that drives the docking rod 241 along the axis and directly into the docking sleeve 112. After the connection is completed, the locking block 242 precisely falls into the locking slot 115, achieving direct mechanical limit locking without the need for calibration.

[0056] When the plug 1 and socket 23 need to be separated, an axial separation load is applied to the socket 23. When the axial tension exceeds the mechanical locking threshold between the block 242 and the slot 115, the block 242, acting under the radial compressive force of the inner wall of the slot 115, retracts axially into the movable groove, compressing the coil spring. At this point, the mechanical limit lock between the docking sleeve 112 and the docking rod 241 is released, and the axial restraint between them is lost. The operator can then easily remove the plug 1 from the hub converter along the axial direction, completing the separation process.

[0057] The oblique side (i.e., waist side) of the trapezoidal cross-section constitutes a progressive guide surface. When the docking rod 241 is inserted into the docking sleeve 112, the clamping block 242 is subjected to radial force at the initial contact stage, automatically aligning with the center axis of the clamping slot 115, significantly reducing radial deviation during the plugging process.

[0058] The present invention adopts the switching element 24, which has the following advantages:

[0059] Advantage 1: When the plug 1 is inserted into the orientation deviation, the magnetic part 114 of the movable frame 113 in the docking part 11 and the magnetic part 114 of the docking rod 241 form a homopolar magnetic domain distribution, and the magnetic repulsion force pushes the docking rod 241 to move into the shell 2. The rack 243 is driven to slide through the inclined mechanical coupling of the push plate 246 and the abutment block 245. The gear pair transmission of the rack 243 and the gear ring 244 drives the flip block 22 to rotate, completing the orientation calibration of the socket 23. The switching part 24 is triggered by magnetic coupling to drive the flip block 22 to flip 180 degrees, thereby realizing automatic orientation calibration of the socket 23 and the plug 1, without the need for manual adjustment of the plug-in angle.

[0060] Advantage 2: When the first plug-in is made, a single set of push plates 246 drives the rack 243 to flip the flip block 22 forward; when the contact is made again, another set of push plates 246 drives the rack 243 in the reverse direction to realize the reverse rotation of the flip block 22, and the force on the cable is balanced through the reciprocating motion mechanism. When the first plug-in is made, a single set of push plates 246 drives the rack 243 to flip the flip block 22 forward; when the contact is made again, another set of push plates 246 drives the rack 243 in the reverse direction to realize the reverse rotation of the flip block 22, and the force on the cable is balanced through the reciprocating motion mechanism.

[0061] Advantage three: the block 242 inside the docking rod 241 cooperates with the slot 115 of the docking sleeve 112 to form a mechanical lock, which prevents the plug 1 from loosening and significantly enhances the connection stability. When the docking rod 241 is inserted into the docking sleeve 112, the block 242 is squeezed back into the movable groove. After reaching the maximum stroke, the round spring pushes the block 242 into the trapezoidal slot 115, and the locking is achieved by the radial constraint of the inner wall of the slot 115. The axial tension must exceed the threshold to release the lock.

[0062] Advantage four: the plug-in orientation is automatically determined by the polarity distribution of the magnetic part 114, the same poles repel each other to trigger angle calibration, and the opposite poles attract each other to directly lock, realizing the dual modes of "plug and play" or "direct locking". When the orientation of the plug 1 is correct, the opposite poles of the magnetic part 114 attract each other to drive the docking rod 241 to directly insert into the docking sleeve 112 for locking; when the orientation is wrong, the same poles repel each other to trigger the flip block 22 to calibrate, without the need for manual judgment.

[0063] Advantage five: Angle calibration can be completed automatically without visual assistance, which is especially suitable for scenarios with limited space or blind insertion, reducing the difficulty of operation. The automated process of magnetic coupling triggering and mechanical transmission enables the plug 1 to be correctly docked through self-calibration of the mechanism when inserted in any orientation, eliminating the dependence on manual positioning.

[0064] Advantage six: The damping sliding characteristics of the rack 243 in the slot can suppress free displacement in the absence of external force, avoiding malfunction of the transmission mechanism caused by equipment vibration or position change. The friction damping design between the rack 243 and the slot of the mounting frame 21 allows the rack 243 to remain stationary after the magnetic repulsion force disappears, and it can only move when triggered by a specific external force.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A universal ball head connected to a portable HUB converter, comprising a plug (1) and a housing (2), characterized in that: Also includes: A mounting frame (21) is provided inside the housing (2), and the mounting frame (21) is provided with a plurality of groups and distributed in an array along the center of the housing (2); a flip block (22) is rotatably connected inside the mounting frame (21), and a socket (23) that fits the plug (1) is fixedly connected inside the flip block (22); a switching member (24) for adjusting the angle of the socket (23) is provided inside the housing (2); and a docking member (11) is provided on the outside of the plug (1); When the plug (1) is inserted into the socket (23), the docking member (11) triggers the switching member (24) to move, thereby driving the flip block (22) to drive the socket (23) to complete a 180-degree flip, thereby achieving plug-in matching between the plug (1) and the socket (23); The docking member (11) comprises a bracket (111) detachably mounted on the outside of the plug (1), a docking sleeve (112) is fixedly connected to both sides of the bracket (111), and the docking sleeve (112) is rotatably mounted on a movable frame (113) via a connecting frame arranged on the outside thereof, the switching member (24) comprises a docking rod (241) penetrating the shell (2) and extending into the interior thereof, and the docking rod (241) is provided with a plurality of groups and distributed in an array along the center of the shell (2), each group of the docking rods (241) is provided with two and symmetrically distributed along the center of the shell (2), the docking rods (241) are connected to the inner wall of the shell (2) via an elastic member arranged on the outside thereof, and a magnetic member (114) is provided in both the docking rod (241) and the movable frame (113); Wherein, when the polarity of the magnetic member (114) in the docking rod (241) and the magnetic member (114) in the movable frame (113) are the same, a magnetic repulsion force is generated when the two are close to each other to push the docking rod (241) to move; when the polarity of the magnetic member (114) in the docking rod (241) and the magnetic member (114) in the movable frame (113) are opposite, a magnetic attraction force is generated when the two are close to each other to lock the position of the docking rod (241); The docking rod (241) is slidably connected to a clamping block (242) that fits the inner wall of the clamping slot (115) through a movable slot provided therein, and the clamping block (242) is connected to the inner wall of the movable slot through a round spring provided on its outer surface.

2. The universal ball joint connected to a portable HUB converter according to claim 1, characterized in that: A slot (115) is provided on the inner wall of the docking sleeve (112), and the cross section of the slot (115) is designed to be trapezoidal.

3. The universal ball joint connected to a portable HUB converter according to claim 1, characterized in that: The mounting frame (21) is slidably connected to a rack (243) via a slotted hole provided on its outer side, and the outer surface of the flip block (22) is fixedly connected to a gear ring (244) meshing with the rack (243).

4. The universal ball joint connected to a portable HUB converter according to claim 3, characterized in that: The rack (243) is slidably connected to an abutment block (245) via a guide groove provided on its outer side, and the abutment block (245) is provided with two and symmetrically distributed along the center of the rack (243). The abutment block (245) is connected to the inner wall of the guide groove via a return spring provided on its outer side. The side of the abutment block (245) away from the rack (243) is designed in an arc surface, and the bottom of the abutment block (245) is designed in an inclined surface.

5. The universal ball joint connected to a portable HUB converter according to claim 1, characterized in that: The housing (2) is slidably connected to a push plate (246) that fits the arc surface of the abutment block (245) via an auxiliary rod arranged inside the housing (2); a compression spring is sleeved on the outer surface of the auxiliary rod.

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