A copper cable terminal suitable for all working conditions

Abstract

The present application relates to the technical field of wiring terminal, and disclose a kind of copper cable wiring terminal of all working condition adaptation, including the wire clamp for clamping cable, wire clamp is provided with dust cover at junction, dust cover includes outer sleeve and inner sleeve, accommodating cavity is arranged between outer sleeve and inner sleeve, and accommodating cavity is filled with magnetic liquid;Inner sleeve includes front cylinder and rear cylinder, front cylinder is arranged at one side close to wire clamp, and front cylinder is fixed in outer sleeve by support strip, rear cylinder is slidably connected on front cylinder, and support positioning device is arranged on the inner side of rear cylinder, when cable slides in the direction away from wire clamp, support positioning device is on the outside of cable, so that cable drives rear cylinder to slide, drain port is arranged on rear cylinder, when rear cylinder slides relative to front cylinder, magnetic liquid in accommodating cavity flows into inner sleeve by drain port, and magnetic liquid is adsorbed on the junction of wire clamp and cable, for preventing arc after loosening.

Description

Technical Field

[0001] This invention relates to the field of terminal block technology, specifically to a copper cable terminal block that is adaptable to all working conditions. Background Technology

[0002] In modern electrical systems, copper cable terminals are core components for power transmission and signal connection, and their performance directly determines the reliability and safety of electrical equipment operation. With the rapid development of industrial automation, new energy power, and smart grids, the application scenarios of copper cable terminals are becoming increasingly complex, covering various operating environments such as high temperature, low temperature, strong electromagnetic interference, and frequent vibration, which places higher demands on their comprehensive performance.

[0003] However, existing copper cable terminals, such as the terminal for facilitating cable connection disclosed in CN116960668A, present numerous technical challenges that urgently need to be addressed. Firstly, they suffer from poor temperature adaptability. The mechanical strength of copper cables decreases significantly at high temperatures, leading to not only deterioration in conductivity but also easy breakage, severely impacting the reliability of power transmission. Secondly, they lack sufficient electromagnetic shielding. During signal transmission, exposed terminals cannot resist external electromagnetic interference, resulting in signal distortion and unstable transmission, failing to meet the demands of modern high-precision electrical equipment. Thirdly, their anti-loosening structure has defects. Even with anti-breakage mechanisms, when the connection becomes loose, the gap between the cable and the clamp creates a high-electric-field region, easily triggering arc discharge. This, coupled with high temperatures, oxidation, and insulation damage, poses a significant safety hazard. These problems severely restrict the application of copper cable terminals in scenarios requiring high temperatures, strong electromagnetic interference, and high reliability, necessitating improvements through technological innovation and structural optimization. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a copper cable terminal block that is adaptable to all working conditions. It has advantages such as dustproof, waterproof, high temperature resistance, electromagnetic interference resistance, loosening prevention, and arc protection, solving the problems of poor temperature adaptability, insufficient electromagnetic shielding capability, and defects in the anti-loosening structure of existing copper cable terminals.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A copper cable terminal block adaptable to all working conditions includes a clamp for holding the cable. The clamp is provided with a dust cover at the connection point. The dust cover includes an outer sleeve and an inner sleeve. A receiving cavity is provided between the outer sleeve and the inner sleeve. The receiving cavity is filled with a magnetic liquid. The magnetic liquid is a magnetic fluid used to improve heat insulation and electromagnetic interference prevention.

[0009] The inner sleeve includes a front sleeve and a rear sleeve arranged front and rear along the cable routing direction. The front sleeve is located on the side near the cable clamp and is fixed inside the outer sleeve by a support bar. The rear sleeve is slidably connected to the front sleeve. A support and positioning device is provided on the inner side of the rear sleeve. When the cable slides away from the cable clamp, the support and positioning device pushes against the outside of the cable, thereby causing the cable to slide the rear sleeve. A drain port is provided on the rear sleeve. When the rear sleeve slides relative to the front sleeve, the magnetic liquid in the receiving cavity flows into the inner sleeve through the drain port. A magnetic ring is also provided at the connection point between the cable clamp and the cable. The magnetic liquid is attracted to the connection point between the cable clamp and the cable to prevent arcing after loosening.

[0010] Preferably, one end of the wire clamp is fixedly connected to one end of the cable, the other end of the wire clamp passes through one end of the outer sleeve and the inner sleeve, the other end of the cable passes through the other end of the outer sleeve and the inner sleeve, the end of the outer sleeve is provided with a fixing piece for fixing the wire clamp at the position corresponding to the wire clamp, and the other end of the outer sleeve is provided with a magnetic sealing component at the position corresponding to the cable.

[0011] Preferably, the magnetic sealing assembly includes an I-shaped rubber ring and an I-shaped magnetic base. The I-shaped rubber ring is I-shaped, with one end fixed to the inner end face of the rear cylinder and the other end fixed to the outer end face of the outer sleeve. The middle part of the I-shaped rubber ring is attached to the outside of the cable.

[0012] The I-shaped magnetic holder includes an inner magnetic block and an outer magnetic block that are slidably disposed on the cable. The inner magnetic block rests on the inner side of the I-shaped rubber ring, and the outer magnetic block rests on the outer side of the I-shaped rubber ring. The opposing sides of the inner and outer magnetic blocks have magnetic attraction to each other.

[0013] The inner and outer magnetic blocks attract each other, the inner magnetic block attracts the magnetic fluid in the receiving cavity, and the outer magnetic block attracts the magnetic fluid in the receiving cavity. This ensures that the I-shaped rubber ring remains in contact with the cable and maintains a seal during the sliding process of the rear cylinder and when the cable shakes or tilts.

[0014] Preferably, the receiving cavity is divided into multiple sub-cavities by at least one annular fixed partition ring provided on the inner side of the outer sleeve, and an annular movable partition ring is provided on the outer side of the rear sleeve on one side corresponding to the fixed partition ring;

[0015] The upper drain port of the rear cylinder includes a horizontal channel that runs through the front and rear of the movable partition ring and a vertical channel that runs through the horizontal channel. One end of the vertical channel is connected to the horizontal channel and the other end is connected to the inside of the inner sleeve. A movable baffle that slides back and forth is provided in the horizontal channel. A top column is provided on the fixed partition ring at the position corresponding to the horizontal channel.

[0016] When the movable separator ring slides towards the wire clamp side to the fixed separator ring near that side, the top post pushes into the horizontal channel, pushing the movable baffle to slide away from the wire clamp. At this time, the horizontal channel is completely blocked by the movable baffle. When the movable separator ring slides towards the cable side to the fixed separator ring near that side or the end of the outer sleeve on that side, the movable baffle slides towards the wire clamp side under the push of the magnetic fluid in the sub-cavity. At this time, the magnetic fluid in the sub-cavity flows into the inner sleeve through the horizontal and vertical channels.

[0017] Preferably, at least three support and positioning devices are evenly arranged on the inner circumference of the rear cylinder. Each support and positioning device includes a rotating rod rotatably connected to the inner side of the rear cylinder. A one-way wheel is provided at the end of the rotating rod near the cable. A return spring is provided between the rotating rod and the rear cylinder. The return spring is used to push the rotating rod to a vertical state. The one-way wheel achieves one-way rotation by setting a ratchet structure. The one-way wheel rotates with the cable when the cable slides towards the side of the cable clamp. The one-way wheel does not rotate when the cable slides away from the side of the cable clamp. Therefore, when the connection between the cable and the cable clamp is loose, the support and positioning device can press against the outside of the cable to fix the cable.

[0018] Preferably, the connection between the wire clamp and the cable is a sleeve wrapped around the outside of the cable. When connecting the cable, the wire clamp is used to press the sleeve of the wire clamp to fix the cable. The magnetic ring is set inside the sleeve of the wire clamp.

[0019] Preferably, the outer sleeve is made of rigid plastic, and the inner sleeve is made of rigid plastic or metal.

[0020] Preferably, a temperature sensor is provided on the inner side of the inner sleeve. The temperature sensor is electrically connected to an external alarm device. When the temperature at the connection between the clamp and the cable exceeds a preset threshold, the temperature sensor triggers the alarm device to issue an alarm, which is used to monitor the operating temperature of the terminal block in real time and prevent overheating failure.

[0021] Preferably, an electromagnetic induction device is provided on the outer side of the outer sleeve. The electromagnetic induction device includes a ring-shaped electromagnetic coil and a control circuit board. The electromagnetic coil is arranged around the outer circumference of the outer sleeve and a heat insulation layer is provided between the electromagnetic coil and the outer sleeve. The control circuit board is electrically connected to the electromagnetic coil and is used to control the electromagnetic coil to generate a periodically changing magnetic field. The magnetic liquid generates a Lorentz force under the action of the periodically changing magnetic field, thereby circulating within the cavity to dissipate heat from the terminals. The control circuit board is provided with a temperature sensing module, which is used to detect the real-time temperature of the terminals. When the real-time temperature exceeds a set threshold, the control circuit board increases the current intensity of the electromagnetic coil and increases the flow speed of the magnetic liquid to enhance the heat dissipation effect.

[0022] Preferably, the outer sleeve has a replenishment chamber connected to the receiving cavity via a replenishment pipe. The replenishment pipe is equipped with a solenoid valve and a flow sensor. The solenoid valve controls the opening and closing of the replenishment pipe, and the flow sensor detects the flow rate of the magnetic liquid. A level sensor is installed inside the replenishment chamber. When the level sensor detects that the magnetic liquid level in the replenishment chamber is below a preset level, or when the flow sensor detects an abnormal flow rate of the magnetic liquid in the receiving cavity, the solenoid valve opens, replenishing the receiving cavity with the magnetic liquid. A temperature sensor is also installed on the outer side of the outer sleeve. This temperature sensor is electrically connected to the control module. When the temperature sensor detects that the terminal temperature exceeds a set threshold, the control module controls the solenoid valve to open, allowing the magnetic liquid in the replenishment chamber to enter the receiving cavity and participate in the heat dissipation cycle. The control module also adjusts the opening of the solenoid valve based on the temperature sensor's reading, controlling the flow rate of the magnetic liquid replenished from the replenishment chamber to the receiving cavity.

[0023] (III) Beneficial Effects

[0024] Compared with the prior art, the present invention provides a copper cable terminal block that is adaptable to all working conditions, and has the following beneficial effects:

[0025] 1. This all-condition adaptable copper cable terminal block features an inner and outer sleeve. A magnetic liquid is filled in the cavity between the inner and outer sleeves. This magnetic liquid provides thermal insulation and electromagnetic interference protection. The inner sleeve is divided into a front sleeve and a rear sleeve that slide together. A support and positioning device is installed inside the rear sleeve to prevent breakage. When the cable and clamp connection becomes loose, the cable slides through the support and positioning device, opening the drainage channel on the rear sleeve and draining the magnetic liquid from the cavity into the inner sleeve. This liquid fills the connection between the cable and clamp, preventing arcing at the connection gap and avoiding potential safety hazards.

[0026] 2. This all-condition adaptable copper cable terminal block uses a magnetic sealing assembly at the ends of the outer and inner sleeves. The magnetic sealing assembly consists of an I-shaped rubber ring and an I-shaped magnetic base. The I-shaped magnetic base includes an inner magnetic block and an outer magnetic block that are slidably mounted on the cable. The inner magnetic block rests on the inner side of the I-shaped rubber ring, and the outer magnetic block rests on the outer side of the I-shaped rubber ring. The opposing sides of the inner and outer magnetic blocks are magnetically attracted to each other, so that the inner and outer magnetic blocks are always in contact during the sliding process of the rear sleeve. Due to the mutual attraction between the inner and outer magnetic blocks, the mutual attraction between the inner magnetic block and the magnetic fluid in the receiving cavity, and the mutual attraction between the outer magnetic block and the magnetic fluid in the receiving cavity, the I-shaped rubber ring is always in contact with the cable to maintain a seal during the sliding process of the rear sleeve and when the cable shakes or tilts.

[0027] 3. This all-condition adaptable copper cable terminal block uses a fixed partition ring and a movable partition ring to divide the receiving cavity into multiple sub-cavities. The drain port is set inside the movable partition ring, and the opening and closing of the drain port is controlled by the top column on the fixed partition ring. When the cable loosens and causes the rear cylinder to slide, the movable partition ring moves away from the fixed partition ring, thereby opening the drain port and filling the magnetic liquid into each sub-cavity. This allows the magnetic liquid in the sub-cavities to be better squeezed when the cable loosens, allowing more magnetic liquid to be discharged into the inner sleeve. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the terminal block structure of the present invention.

[0029] Figure 2 This is an exploded view of the wiring terminal of the present invention.

[0030] Figure 3 This is a cross-sectional view of the terminal block of the present invention, in which the receiving cavity is not divided into multiple sub-cavities.

[0031] Figure 4 This is a cross-sectional view of the terminal block of the present invention in its normal state (when the rear cavity does not slide relative to the front cavity), at which time the receiving cavity is divided into multiple sub-cavities.

[0032] Figure 5 For the present invention Figure 4 A magnified view of a portion of region A in the middle.

[0033] Figure 6 This is a cross-sectional view of the terminal block of the present invention when it is loose (when the rear cavity slides relative to the front cavity), at which time the receiving cavity is divided into multiple sub-cavities.

[0034] Figure 7 For the present invention Figure 6 A magnified view of a portion of region B in the middle.

[0035] Figure 8 This is a half-sectional view of the outer sleeve of the present invention.

[0036] Figure 9 This is a schematic diagram of the inner sleeve of the present invention.

[0037] Figure 10 This is a cross-sectional view of the inner sleeve of the present invention.

[0038] Figure 11 This is a half-sectional view of the magnetic sealing assembly of the present invention.

[0039] In the diagram: 1. Cable; 2. Cable clamp; 3. Outer sleeve; 30. Receiving cavity; 301. Sub-cavity; 31. Fixing plate; 32. Support bar; 33. Fixing partition ring; 331. Top column; 4. Inner sleeve; 41. Front sleeve; 42. Rear sleeve; 421. Support positioning device; 43. Movable partition ring; 431. Horizontal channel; 432. Vertical channel; 433. Movable baffle; 5. I-shaped rubber ring; 6. I-shaped magnetic base; 61. Inner magnetic block; 62. Outer magnetic block. Detailed Implementation

[0040] 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.

[0041] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Example 1:

[0045] This embodiment provides a copper cable terminal block that is adaptable to all working conditions, and has the following technical features.

[0046] Please see Figure 1-11 A copper cable terminal block adaptable to all working conditions includes a clamp 2 for clamping a cable 1. The clamp 2 is provided with a dust cover at the connection point. The dust cover includes an outer sleeve 3 and an inner sleeve 4. A receiving cavity 30 is provided between the outer sleeve 3 and the inner sleeve 4. The receiving cavity 30 is filled with a magnetic liquid. The magnetic liquid is a magnetic fluid used to improve the heat insulation effect and the electromagnetic interference prevention effect.

[0047] The inner sleeve 4 includes a front sleeve 41 and a rear sleeve 42 arranged back-to-back along the cable 1's routing direction. The front sleeve 41 is located on the side near the cable clamp 2 and is fixed inside the outer sleeve 3 by a support bar 32. The rear sleeve 42 is slidably connected to the front sleeve 41. A support positioning device 421 is provided on the inner side of the rear sleeve 42. When the cable 1 slides away from the cable clamp 2, the support positioning device 421 presses against the outside of the cable 1, thereby causing the cable 1 to drive the rear sleeve 42 to slide. A drain port is provided on the rear sleeve 42. When the rear sleeve 42 slides relative to the front sleeve 41, the magnetic liquid in the receiving cavity 30 flows into the inner sleeve 4 through the drain port. The cable clamp 2 is also provided with a magnetic ring at the connection point with the cable 1. The magnetic liquid is attracted to the connection point between the cable clamp 2 and the cable 1 to prevent arcing after loosening.

[0048] It should be noted that magnetic fluid is composed of three parts: magnetic particles, base fluid, and surfactant. The magnetic particles are ferromagnetic metal particles or ferrite particles, such as ferromagnetic metal particles of iron, cobalt, nickel and their alloys, or ferrite particles such as manganese-zinc ferrite, nickel-zinc ferrite, etc. The base fluid is water, silicone oil or mineral oil. The surfactant is oleic acid, sodium dodecylbenzene sulfonate or polyvinylpyrrolidone. Magnetic fluid has fluidity, magnetism, thermal conductivity and electromagnetic shielding properties.

[0049] It should be noted that the support strip 32 and the front cylinder 41 are fixedly connected by any one of the following methods: integral, adhesive, or slot.

[0050] It should be noted that the support bar 32 is arranged along the sliding direction of the rear cylinder 42 or in a ring shape.

[0051] In an optional embodiment, one end of the wire clamp 2 is fixedly connected to one end of the cable 1, the other end of the wire clamp 2 passes through one end of the outer sleeve 3 and the inner sleeve 4, the other end of the cable 1 passes through the other end of the outer sleeve 3 and the inner sleeve 4, a fixing piece 31 for fixing the wire clamp 2 is provided at the end of the outer sleeve 3 at the position corresponding to the wire clamp 2, and a magnetic sealing component is provided at the other end of the outer sleeve 3 at the position corresponding to the cable 1.

[0052] In an optional embodiment, the magnetic sealing assembly includes an I-shaped rubber ring 5 and an I-shaped magnetic base 6. The I-shaped rubber ring 5 is I-shaped, with one end fixed to the inner end face of the rear cylinder 42 and the other end fixed to the outer end face of the outer sleeve 3. The middle part of the I-shaped rubber ring 5 is attached to the outside of the cable 1.

[0053] The I-shaped magnetic base 6 includes an inner magnetic block 61 and an outer magnetic block 62 that are slidably disposed on the cable 1. The inner magnetic block 61 rests on the inner side of the I-shaped rubber ring 5, and the outer magnetic block 62 rests on the outer side of the I-shaped rubber ring 5. The opposite sides of the inner magnetic block 61 and the outer magnetic block 62 have magnetic attraction to each other.

[0054] The inner magnetic block 61 and the outer magnetic block 62 attract each other. The inner magnetic block 61 attracts the magnetic liquid in the receiving cavity 30, and the outer magnetic block 62 attracts the magnetic liquid in the receiving cavity 30. This ensures that the I-shaped rubber ring 5 remains in contact with the cable 1 and keeps it sealed during the sliding process of the rear cylinder 42 and when the cable 1 is shaken and tilted.

[0055] In an optional embodiment, the receiving cavity 30 is divided into multiple sub-cavities 301 by at least one annular fixed partition ring 33 disposed on the inner side of the outer sleeve 3, and an annular movable partition ring 43 is disposed on the outer side of the rear cylinder 42 on one side corresponding to the fixed partition ring 33.

[0056] The discharge port on the rear cylinder 42 includes a horizontal channel 431 that runs through the front and rear of the movable partition ring 43 and a vertical channel 432 that runs through the horizontal channel 431. One end of the vertical channel 432 is connected to the horizontal channel 431 and the other end is connected to the inside of the inner sleeve 4. A movable baffle 433 that slides back and forth is provided in the horizontal channel 431. A top column 331 is provided on the fixed partition ring 33 at the position corresponding to the horizontal channel 431.

[0057] When the movable separating ring 43 slides toward the wire clamp 2 to the side near the fixed separating ring 33, the top post 331 pushes into the horizontal channel 431 and pushes the movable baffle 433 to slide away from the wire clamp 2. At this time, the horizontal channel 431 is completely blocked by the movable baffle 433. When the movable separating ring 43 slides toward the cable 1 to the side near the fixed separating ring 33 or the end of the outer sleeve 3 on that side, the movable baffle 433 slides toward the side near the wire clamp 2 under the push of the magnetic fluid in the sub-cavity 301. At this time, the magnetic fluid in the sub-cavity 301 flows into the inner sleeve 4 through the horizontal channel 431 and the vertical channel 432.

[0058] It should be noted that the horizontal channel 431 is provided with limiting structures at both the front and rear ends to restrict the movable baffle 433 to slide within the horizontal channel 431. The limiting structure is an inwardly protruding boss.

[0059] It should be noted that each movable partition ring 43 is provided with four or more horizontal channels 431 evenly arranged around its circumference to ensure that there are drain ports at the highest and lowest points to drain the magnetic liquid into the inner sleeve 4.

[0060] It should be noted that, in order to ensure that each top post 331 is accurately aligned with the corresponding horizontal channel 431, an inwardly protruding rib is provided on the inner side of the outer sleeve 3. The rib is provided along the sliding direction of the rear sleeve 42. The outer side of the movable partition ring 43 is provided with a corresponding groove at the position of the corresponding rib, thereby restricting the rotation of the rear sleeve 42 and ensuring that the top post 331 is always aligned with the corresponding horizontal channel 431.

[0061] In an optional embodiment, at least three support and positioning devices 421 are evenly arranged on the inner circumference of the rear cylinder 42. Each support and positioning device 421 includes a rotating rod rotatably connected to the inner side of the rear cylinder 42. A one-way wheel is provided at the end of the rotating rod near the cable 1. A return spring is provided between the rotating rod and the rear cylinder 42. The return spring is used to push the rotating rod to a vertical state. The one-way wheel achieves one-way rotation by setting a ratchet structure. The one-way wheel rotates with the cable 1 when the cable 1 slides towards the side closer to the clamp 2. The one-way wheel does not rotate when the cable 1 slides away from the clamp 2. Therefore, when the connection between the cable 1 and the clamp 2 is loose, the support and positioning device 421 can press against the outside of the cable 1 to fix the cable 1.

[0062] In an optional embodiment, the connection between the wire clamp 2 and the cable 1 is a sleeve wrapped around the outside of the cable 1. When connecting the cable 1, the wire clamp 2 is used to fix the cable 1 by pressing the sleeve of the wire clamp 2 with pliers. The magnetic ring is disposed inside the sleeve of the wire clamp 2.

[0063] In an optional embodiment, the outer sleeve 3 is made of rigid plastic, and the inner sleeve 4 is made of rigid plastic or metal.

[0064] In an optional embodiment, a temperature sensor is provided inside the inner sleeve 4. The temperature sensor is electrically connected to an external alarm device. When the temperature at the connection between the clamp 2 and the cable 1 exceeds a preset threshold, the temperature sensor triggers the alarm device to issue an alarm, which is used to monitor the operating temperature of the terminal block in real time and prevent overheating failure.

[0065] In an optional embodiment, an electromagnetic induction device is provided on the outer side of the outer sleeve 3. The electromagnetic induction device includes an annular electromagnetic coil and a control circuit board. The electromagnetic coil is arranged around the outer circumference of the outer sleeve 3 and a heat insulation layer is provided between the electromagnetic coil and the outer sleeve 3. The control circuit board is electrically connected to the electromagnetic coil and is used to control the electromagnetic coil to generate a periodically changing magnetic field. The magnetic liquid generates a Lorentz force under the action of the periodically changing magnetic field, thereby circulating within the receiving cavity 30 to dissipate heat from the terminal block. The control circuit board is provided with a temperature sensing module, which is used to detect the real-time temperature of the terminal block. When the real-time temperature exceeds a set threshold, the control circuit board increases the current intensity of the electromagnetic coil and increases the flow speed of the magnetic liquid to enhance the heat dissipation effect.

[0066] In an optional embodiment, a replenishment chamber is provided outside the outer sleeve 3, and the replenishment chamber is connected to the receiving cavity 30 through a replenishment pipe. A solenoid valve and a flow sensor are provided on the replenishment pipe. The solenoid valve controls the opening and closing of the replenishment pipe, and the flow sensor detects the flow rate of the magnetic liquid. A level sensor is provided inside the replenishment chamber. When the level sensor detects that the magnetic liquid in the replenishment chamber is below a preset level, or when the flow sensor detects an abnormal flow rate of the magnetic liquid in the receiving cavity 30, the solenoid valve opens, and the magnetic liquid in the replenishment chamber replenishes the receiving cavity 30. A temperature sensor is also provided outside the outer sleeve 3. The temperature sensor is electrically connected to the control module. When the temperature sensor detects that the temperature of the wiring terminal exceeds a set threshold, the control module controls the solenoid valve to open, allowing the magnetic liquid in the replenishment chamber to enter the receiving cavity 30 to participate in the heat dissipation cycle. The control module is also used to adjust the opening of the solenoid valve according to the detection value of the temperature sensor, controlling the flow rate of the magnetic liquid replenished from the replenishment chamber to the receiving cavity 30.

[0067] Working principle: The dust cover consists of an outer sleeve 3 and an inner sleeve 4. The cavity 30 between the outer sleeve 3 and the inner sleeve 4 is filled with magnetic liquid, which can improve the heat insulation and electromagnetic interference protection performance.

[0068] The inner sleeve 4 includes a front sleeve 41 and a rear sleeve 42 arranged along the cable 1 routing direction. The front sleeve 41 is fixed inside the outer sleeve 3 by a support bar 32, and the rear sleeve 42 can slide back and forth on the front sleeve 41. The support positioning device 421 inside the rear sleeve 42 has a rotating rod, a one-way wheel, a return spring, and other structures working together. When the cable 1 slides away from the wire clamp 2, the one-way wheel does not rotate, and the support positioning device 421 pushes against the outside of the cable 1, causing the rear sleeve 42 to slide; when the cable 1 slides closer to the wire clamp 2, the one-way wheel rotates.

[0069] The rear cylinder 42 is provided with a drain port, which consists of a horizontal channel 431, a vertical channel 432 and a movable baffle 433. It cooperates with the fixed partition ring 33 inside the outer sleeve 3 and the movable partition ring 43 outside the rear cylinder 42. When the rear cylinder 42 slides, it controls the magnetic liquid in the receiving cavity 30 to flow into the inner sleeve 4.

[0070] One end of the wire clamp 2 is fixed to the cable 1, and the other end passes through the outer sleeve 3 and the inner sleeve 4. The fixing piece 31 at the end of the outer sleeve 3 fixes the wire clamp 2. The magnetic sealing assembly at the other end is composed of an I-shaped rubber ring 5 and an I-shaped magnetic base 6. The inner magnetic block 61 and the outer magnetic block 62 attract each other and are attracted to the magnetic liquid in the receiving cavity 30, so that the I-shaped rubber ring 5 always adheres to the cable 1 to keep it sealed.

[0071] The temperature sensor inside the inner sleeve 4 monitors the temperature at the connection between the clamp 2 and the cable 1. When the temperature exceeds a preset threshold, it triggers an external alarm. The electromagnetic induction device on the outer sleeve 3 generates a periodically changing magnetic field under the action of the control circuit board, causing the magnetic liquid to circulate and dissipate heat within the receiving cavity 30 due to the Lorentz force. The control circuit board adjusts the current intensity according to the real-time temperature detected by the temperature sensing module.

[0072] The replenishment chamber outside the outer sleeve 3 is connected to the receiving chamber 30 through a replenishment pipe. The solenoid valve, flow sensor on the pipe, as well as the liquid level sensor and control module in the replenishment chamber work together to control the replenishment of magnetic liquid in the replenishment chamber to the receiving chamber 30 to participate in the heat dissipation cycle based on the level, flow rate and terminal temperature of the magnetic liquid.

[0073] In summary, this all-condition adaptable copper cable terminal block, by setting two outer sleeves 3 and an inner sleeve 4, fills the cavity 30 between the outer sleeve 3 and the inner sleeve 4 with magnetic liquid. The magnetic liquid provides thermal insulation and electromagnetic interference protection. The inner sleeve 4 is divided into a front sleeve 41 and a rear sleeve 42 that are slidably connected to each other. A support and positioning device 421 for preventing breakage is set on the inner side of the rear sleeve 42. When the connection between the cable 1 and the clamp 2 becomes loose, the cable 1 drives the rear sleeve 42 to slide through the support and positioning device 421, opening the drainage channel on the rear sleeve 42 and draining the magnetic liquid in the cavity 30 into the inner sleeve 4, filling the connection between the cable 1 and the clamp 2, and preventing the generation of electric arcs at the connection gap, which could lead to safety hazards.

[0074] This all-condition adaptable copper cable terminal block uses a magnetic sealing assembly at the ends of the outer sleeve 3 and the inner sleeve 4. The magnetic sealing assembly consists of an I-shaped rubber ring 5 and an I-shaped magnetic base 6. The I-shaped magnetic base 6 includes an inner magnetic block 61 and an outer magnetic block 62 that are slidably mounted on the cable 1. The inner magnetic block 61 rests on the inner side of the I-shaped rubber ring 5, and the outer magnetic block 62 rests on the outer side of the I-shaped rubber ring 5. The opposing sides of the inner magnetic block 61 and the outer magnetic block 62 have magnetic attraction to each other, so that the inner magnetic block 61 and the outer magnetic block 62 are always in contact during the sliding process of the rear sleeve 42. Because the inner magnetic block 61 and the outer magnetic block 62 attract each other, the inner magnetic block 61 attracts the magnetic liquid in the receiving cavity 30, and the outer magnetic block 62 attracts the magnetic liquid in the receiving cavity 30, the I-shaped rubber ring 5 is always in contact with the cable 1 to maintain a seal during the sliding process of the rear sleeve 42 and when the cable 1 is shaken or tilted.

[0075] This all-condition adaptable copper cable terminal uses a fixed partition ring 33 and a movable partition ring 43 to divide the receiving cavity 30 into multiple sub-cavities 301. The drain port is set inside the movable partition ring 43, and the opening and closing of the drain port is controlled by the top post 331 on the fixed partition ring 33. When the cable 1 loosens and causes the rear cylinder 42 to slide, the movable partition ring 43 moves away from the fixed partition ring 33, thereby opening the drain port and filling the magnetic liquid into each sub-cavity 301. This allows the cable 1 to better squeeze the magnetic liquid in the sub-cavity 301 when it loosens, allowing more magnetic liquid to be discharged into the inner sleeve 4.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper cable terminal block adaptable to all working conditions, comprising a clamp (2) for holding a cable (1), wherein the clamp (2) is provided with a dust cover at the connection point, characterized in that: The dust cover includes an outer sleeve (3) and an inner sleeve (4). A receiving cavity (30) is provided between the outer sleeve (3) and the inner sleeve (4). The receiving cavity (30) is filled with a magnetic liquid, which is a magnetic fluid used to improve the heat insulation effect and the electromagnetic interference prevention effect. The inner sleeve (4) includes a front sleeve (41) and a rear sleeve (42) arranged in front and back along the cable (1) routing direction. The front sleeve (41) is located on the side close to the wire clamp (2). The front sleeve (41) is fixed inside the outer sleeve (3) by a support strip (32). The rear sleeve (42) is slidably connected to the front sleeve (41) in front and back. A support positioning device (421) is provided on the inner side of the rear cylinder (42). When the cable (1) slides away from the wire clamp (2), the support positioning device (421) presses against the outside of the cable (1), thereby causing the cable (1) to drive the rear cylinder (42) to slide. A drain port is provided on the rear cylinder (42). When the rear cylinder (42) slides relative to the front cylinder (41), the magnetic liquid in the receiving cavity (30) flows into the inner sleeve (4) through the drain port. The clamp (2) is also provided with a magnetic ring at the connection point with the cable (1). Magnetic liquid is adsorbed at the connection point between the clamp (2) and the cable (1) to prevent the generation of an electric arc after loosening. One end of the wire clamp (2) is fixedly connected to one end of the cable (1), and the other end of the wire clamp (2) passes through one end of the outer sleeve (3) and the inner sleeve (4). The other end of the cable (1) passes through the other end of the outer sleeve (3) and the inner sleeve (4). A fixing piece (31) for fixing the wire clamp (2) is provided at the end of the outer sleeve (3) at the position corresponding to the wire clamp (2), and a magnetic sealing assembly is provided at the other end of the outer sleeve (3) at the position corresponding to the cable (1). The magnetic sealing assembly includes an I-shaped rubber ring (5) and an I-shaped magnetic base (6). The I-shaped rubber ring (5) is in the shape of an I-shaped plate. One end of the I-shaped rubber ring (5) is fixed on the inner end face of the rear cylinder (42), and the other end of the I-shaped rubber ring (5) is fixed on the outer end face of the outer sleeve (3). The middle part of the I-shaped rubber ring (5) is attached to the outside of the cable (1). The I-shaped magnetic base (6) includes an inner magnetic block (61) and an outer magnetic block (62) that are slidably disposed on the cable (1). The inner magnetic block (61) rests on the inner side of the I-shaped rubber ring (5), and the outer magnetic block (62) rests on the outer side of the I-shaped rubber ring (5). The opposite sides of the inner magnetic block (61) and the outer magnetic block (62) have magnetic attraction to each other. The inner magnetic block (61) and the outer magnetic block (62) attract each other. The inner magnetic block (61) attracts the magnetic liquid in the receiving cavity (30), and the outer magnetic block (62) attracts the magnetic liquid in the receiving cavity (30). This ensures that the I-shaped rubber ring (5) remains in contact with the cable (1) to maintain a seal during the sliding process of the rear cylinder (42) and when the cable (1) is shaken and tilted.

2. The copper cable terminal block for all operating conditions as described in claim 1, characterized in that, The receiving cavity (30) is divided into multiple sub-cavities (301) by at least one annular fixed partition ring (33) provided on the inner side of the outer sleeve (3), and an annular movable partition ring (43) is provided on the outer side of the rear sleeve (42) on one side corresponding to the fixed partition ring (33). The upper drain port of the rear cylinder (42) includes a horizontal channel (431) that runs through the front and back of the movable partition ring (43) and a vertical channel (432) that runs through the horizontal channel (431). One end of the vertical channel (432) is connected to the horizontal channel (431) and the other end is connected to the inside of the inner sleeve (4). A movable baffle (433) that slides back and forth is provided in the horizontal channel (431). A top column (331) is provided in the fixed partition ring (33) at the position corresponding to the horizontal channel (431). When the movable partition ring (43) slides toward the wire clamp (2) to the fixed partition ring (33) on that side, the top post (331) pushes into the horizontal channel (431) and pushes the movable baffle (433) to slide away from the wire clamp (2). At this time, the horizontal channel (431) is completely blocked by the movable baffle (433). When the movable partition ring (43) slides toward the cable (1) to the fixed partition ring (33) on that side or the end of the outer sleeve (3) on that side, the movable baffle (433) slides to the side close to the wire clamp (2) under the push of the magnetic liquid in the sub-cavity (301). At this time, the magnetic liquid in the sub-cavity (301) flows into the inner sleeve (4) through the horizontal channel (431) and the vertical channel (432).

3. The copper cable terminal block for all operating conditions as described in claim 1, characterized in that, At least three support positioning devices (421) are evenly arranged on the inner circumference of the rear cylinder (42). Each support positioning device (421) includes a rotating rod rotatably connected to the inner side of the rear cylinder (42). A one-way wheel is provided at the end of the rotating rod near the cable (1). A return spring is provided between the rotating rod and the rear cylinder (42). The return spring is used to push the rotating rod to a vertical state. The one-way wheel achieves one-way rotation by setting a ratchet structure. The one-way wheel rotates with the cable (1) when the cable (1) slides towards the wire clamp (2). The one-way wheel does not rotate when the cable (1) slides away from the wire clamp (2). Therefore, when the connection between the cable (1) and the wire clamp (2) is loose, the support positioning device (421) can press against the outside of the cable (1) to fix the cable (1).

4. The copper cable terminal block for all operating conditions as described in claim 1, characterized in that, The connection between the clamp (2) and the cable (1) is a sleeve wrapped around the outside of the cable (1). When connecting the cable (1), the clamp (2) is used to fix the cable (1) by pressing the sleeve of the clamp (2) with pliers. The magnetic ring is set inside the sleeve of the clamp (2).

5. A copper cable terminal block adaptable to all working conditions according to claim 1, characterized in that, The outer sleeve (3) is made of hard plastic, and the inner sleeve (4) is made of hard plastic or metal.

6. A copper cable terminal block adaptable to all working conditions according to claim 1, characterized in that, A temperature sensor is provided inside the inner sleeve (4). The temperature sensor is electrically connected to an external alarm device. When the temperature at the connection between the clamp (2) and the cable (1) exceeds a preset threshold, the temperature sensor triggers the alarm device to issue an alarm. This is used to monitor the operating temperature of the terminal block in real time and prevent overheating faults.

7. A copper cable terminal block adaptable to all working conditions according to claim 6, characterized in that, An electromagnetic induction device is provided on the outside of the outer sleeve (3). The electromagnetic induction device includes an annular electromagnetic coil and a control circuit board. The electromagnetic coil is arranged around the outer circumference of the outer sleeve (3) and a heat insulation layer is provided between it and the outer sleeve (3). The control circuit board is electrically connected to the electromagnetic coil and is used to control the electromagnetic coil to generate a periodically changing magnetic field. The magnetic liquid generates Lorentz force under the action of the periodically changing magnetic field, thereby circulating in the receiving cavity (30) to achieve heat dissipation of the terminal block. The control circuit board is provided with a temperature sensing module. The temperature sensing module is used to detect the real-time temperature of the terminal block. When the real-time temperature exceeds a set threshold, the control circuit board increases the current intensity of the electromagnetic coil and increases the flow speed of the magnetic liquid to enhance the heat dissipation effect.

8. A copper cable terminal block adaptable to all working conditions according to claim 7, characterized in that, The outer sleeve (3) is provided with a liquid replenishment chamber, which is connected to the receiving cavity (30) through a liquid replenishment pipe; the liquid replenishment pipe is provided with a solenoid valve and a flow sensor, the solenoid valve is used to control the opening and closing of the liquid replenishment pipe, and the flow sensor is used to detect the flow rate of the magnetic liquid; The replenishment chamber is equipped with a liquid level sensor. When the liquid level sensor detects that the magnetic liquid in the replenishment chamber is lower than the preset liquid level, or when the flow sensor detects that the flow rate of the magnetic liquid in the receiving chamber (30) is abnormal, the solenoid valve opens and the magnetic liquid in the replenishment chamber is replenished into the receiving chamber (30). The outer sleeve (3) is also equipped with a temperature sensor. The temperature sensor is electrically connected to the control module. When the temperature sensor detects that the temperature of the wiring terminal exceeds the set threshold, the control module controls the solenoid valve to open, so that the magnetic liquid in the replenishment chamber enters the receiving chamber (30) to participate in the heat dissipation cycle. The control module is also used to adjust the opening of the solenoid valve according to the detection value of the temperature sensor and control the flow rate of the replenishment chamber to replenish the receiving chamber (30) with magnetic liquid.

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