Electric connection terminal

Abstract

The invention provides an electric connection terminal, which comprises a female joint and a male joint, and is characterized in that the female joint comprises a first insulating shell, a transition assembly is slidably connected in the first insulating shell, and a first contact finger is arranged on the transition assembly; the male joint comprises a second insulating shell, and the second insulating shell is provided with a second contact finger matched with the first contact finger; in the process that the male connector drives the transition assembly to move towards the power-on point position, gas in the first cavity can be compressed. In the process that the male connector drives the transition assembly to move towards the power-off point position, gas in the first cavity can flow between the first contact finger and the second contact finger. By the adoption of the structure, in the process that the male connector is inserted into the female connector, gas in the first cavity can be compressed, in the process that the male connector is unplugged, the gas in the first cavity can flow between the first contact finger and the second contact finger, and the effect of automatically controlling gas flow for arc extinguishing is achieved.

Description

Technical Field

[0001] The present invention relates to a connecting terminal, in particular to an electrical connecting terminal. Background Art

[0002] Electrical connectors, as key components for connecting and disconnecting circuits in electrical systems, are widely used in industrial equipment, power systems, electronic instruments, and automated control systems. Their primary function is to quickly connect and disconnect circuits through plugging and unplugging, ensuring the safety and stability of electrical equipment during operation. As electrical equipment evolves toward higher voltages, higher currents, and higher frequencies, performance requirements for electrical connectors are increasing. In particular, effectively suppressing arcing during the plugging and unplugging process has become a crucial issue for improving product safety.

[0003] Currently, most common electrical connectors are plug-in terminals, consisting of female and male connectors, each with mating contacts. During insertion and separation, especially when operated under power, arcing can easily occur due to voltage differences between the contacts. This arcing can not only instantly burn the contact surfaces, causing poor contact and increased resistance, but can also cause fires, short circuits, and other safety hazards, impacting equipment and personnel safety.

[0004] Therefore, there is an urgent need for an electrical connection terminal that can automatically control gas flow to suppress arc generation during the extraction process. Summary of the Invention

[0005] In order to overcome the existing technical problems, the present invention provides an electrical connection terminal that can automatically control gas flow to suppress arc generation during the extraction process.

[0006] The present invention adopts the following technical solutions.

[0007] An electrical connection terminal comprises a female connector and a male connector, wherein the female connector comprises a first insulating shell, a transition assembly is slidably connected in the first insulating shell, and a first contact finger is provided on the transition assembly;

[0008] A power-off point and a power-on point are provided on the moving track of the transition component. A first chamber is formed between an end of the transition component close to the power-on point and the first insulating shell, and a second chamber is formed between an end of the transition component close to the power-off point and the first insulating shell.

[0009] The male connector can drive the transition assembly to move back and forth between the power-on point and the power-off point. The male connector includes a second insulating shell, and the second insulating shell is provided with a second contact finger that cooperates with the first contact finger.

[0010] When the male connector drives the transition assembly toward the power-on point, the gas in the first chamber can be compressed; when the male connector drives the transition assembly toward the power-off point, the gas in the first chamber can flow between the first contact finger and the second contact finger.

[0011] As a further improvement of the present invention, a separation point is provided between the power-on point and the power-off point. When the transition assembly moves to the separation point, the second contact finger keeps moving toward the power-off point, and the first contact finger tends to move toward the power-on point.

[0012] As a further improvement of the present invention, a first locking assembly is provided between the first insulating shell and the transition assembly, the first locking assembly having a locked state and an unlocked state. When the first locking assembly is in the locked state, the second insulating shell and the transition assembly are connected as a whole;

[0013] When the first locking assembly is in an unlocked state, the second insulating shell and the transition assembly can be separated;

[0014] When the second insulating shell and the transition assembly move between the power-on point and the separation point, the first locking assembly is in a locked state.

[0015] As a further improvement of the present invention, the first locking assembly includes a locking cylinder, a pushing member slidably arranged in the locking cylinder, a reset elastic member connected to the locking cylinder and the pushing member, and a first lock ball, the locking cylinder is provided with a locking through hole for accommodating the first lock ball, the locking through hole is provided with a first wall, and the pushing member is provided with a pushing groove;

[0016] The second insulating shell is provided with an insulating hole for the locking cylinder to be inserted, the inner wall of the insulating hole is provided with a locking hole, and a locking elastic member and a locking block are provided in the locking hole;

[0017] The first insulating shell is connected to a push rod located on the moving track of the push member;

[0018] When the male connector drives the transition assembly to move from the power-off point to the separation point, the push rod abuts against the push piece and pushes the push piece close to the second insulating shell. When the transition assembly is at the separation point, the push groove corresponds to the first lock bead, so that the first lock bead enters the push groove, and the locking elastic member drives the locking block to abut against the first wall to lock the movement of the locking cylinder.

[0019] As a further improvement of the present invention, the side wall of the locking cylinder is provided with an air injection hole;

[0020] During the process of the transition assembly moving from the separation point to the power-off point, the air jet hole is in an open state;

[0021] When the transition assembly is in the power-on position or the power-off position, the air jet hole is in a closed state.

[0022] As a further improvement of the present invention, the transition assembly includes a piston and a slide seat. The slide seat is located at one end of the piston close to the power-on point. A tension spring is provided between the slide seat and the piston. A first compression spring is connected between the slide seat and the first insulating shell. The first compression spring causes the slide seat to have a tendency to move toward the power-off point.

[0023] The first insulating shell is provided with a second locking assembly acting on the sliding seat, and the second locking assembly has a locked state and an unlocked state;

[0024] When the second locking assembly is in a locked state, the second locking assembly locks the slide at the power-on point;

[0025] When the second locking assembly is in the unlocked state, the slide maintains a tendency to move toward the power-off point;

[0026] When the piston moves to the power-off point, the second locking assembly is in an unlocked state.

[0027] As a further improvement of the present invention, the second locking assembly includes a first lock hole located on the movement track of the second insulating shell, and a second lock hole located on the movement track of the slide, the first lock hole and the second lock hole are connected by a hydraulic pipeline, and the first lock hole and the second lock hole are both provided with a first elastic member, a locking block, and a push block cooperating with the locking block, and the push block is sealingly slidably arranged in the hydraulic pipeline;

[0028] The second insulating shell and the sliding seat are both provided with locking grooves for the locking block to be inserted into;

[0029] When the piston moves from the separation point to the power-off point, the second insulating shell pushes the corresponding locking block to disengage it from the locking groove of the second insulating shell. The locking block drives the pushing block to compress the liquid in the hydraulic pipeline, thereby driving the locking block of the second lock hole to disengage from the locking groove of the slide and unlock the slide.

[0030] When the locking block of the first locking hole is inserted into the locking groove of the second insulating shell, the first elastic member of the second locking hole pushes the locking block to be inserted into the locking groove of the sliding seat.

[0031] As a further improvement of the present invention, a circulation channel connecting the first chamber and the second chamber is provided on the first insulating shell, and a one-way ventilation structure and a filter are provided in the circulation channel. The one-way ventilation structure is used to limit the gas in the first chamber from flowing into the second chamber through the circulation channel.

[0032] As a further improvement of the present invention, the female connector further includes a conductive cylinder and a conductive post slidably connected to the conductive cylinder, an annular conductive wall is formed on the first contact finger, and a second compressible elastic member is connected between the conductive post and the conductive cylinder; the second compressible elastic member causes the conductive post to have a tendency to move toward the power-off point;

[0033] When the transition assembly is at the energized point, the separated point, or any position therebetween, the conductive post contacts the conductive wall;

[0034] When the transition assembly is located at the power-off point, the conductive post is separated from the conductive wall.

[0035] As a further improvement of the present invention, a third compression elastic member is provided between the first insulating shell and the second insulating shell, so that the second insulating shell has a tendency to move away from the first insulating shell. A second locking bead is provided on the first insulating shell, and a limiting block is provided on the second insulating shell. A second wall is provided on the limiting block. When the limiting block cooperates with the first insulating shell, the second locking bead abuts against the second wall.

[0036] The beneficial effects of the present invention are:

[0037] 1. When the male connector is inserted into the female connector, the gas in the first chamber can be compressed, and when the male connector is pulled out, the gas in the first chamber can flow between the first contact finger and the second contact finger, thereby achieving the effect of automatically controlling the gas flow and extinguishing the arc.

[0038] 2. During the process of the second insulating shell moving from the power-on point to the separation point, the first locking assembly is always in a locked state, thereby driving the piston to move together. At the same time, the second locking assembly locks the slide at the power-on point, so that the piston and the slide move away from each other. During this period, the tension spring accumulates energy. When the second insulating shell moves to the separation point, driven by the second insulating shell, the second contact finger keeps moving toward the power-off point at a certain speed, and the tension spring has accumulated enough tension at this time. In this way, when the first locking assembly switches to the unlocked state, the second contact finger can continue to move toward the power-off point at a certain speed, while the first contact finger first stops under the action of the tension spring, and then quickly moves toward the power-on point, finally realizing the rapid separation of the first contact finger and the second contact finger.

[0039] 3. A circulation flow channel is provided, which enables the gas in the second chamber to be squeezed into the first chamber when the transition component moves from the power-on point to the power-off point. The gas in the first insulating shell is reused, which helps to reduce operating costs. At the same time, the filter element will filter the gas flowing through the circulation flow channel to prevent the dust generated by the arc in the second chamber from following the airflow into the first chamber. In this way, when the first contact finger and the second contact finger are separated next time, the gas in the first chamber will not carry dust and flow between the two, thereby avoiding affecting the arc extinguishing effect of the airflow. By setting up a one-way ventilation structure, the gas in the first chamber can be restricted from flowing into the second chamber through the circulation flow channel during the process of the transition component moving from the power-off point to the power-on point, and the gas in the first chamber can be compressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 It is a structural cross-sectional view of the transition component of the present invention located at the power-on point.

[0042] Figure 2 yes Figure 1 An enlarged view of the partial figure A in the middle;

[0043] Figure 3 yes Figure 1 An enlarged view of the partial image B in the middle;

[0044] Figure 4 This is a structural cross-sectional view of the piston of the present invention at the separation point;

[0045] Figure 5 yes Figure 4 An enlarged view of the partial image C in the middle;

[0046] Figure 6 is a structural cross-sectional view of the first locking assembly of the present invention when it is switched to an unlocked state;

[0047] Figure 7 This is a structural cross-sectional view of the transition assembly of the present invention located at the power-off point;

[0048] Figure 8 It is a structural cross-sectional view of the second insulating shell of the present invention when it is separated from the first insulating shell.

[0049] Description of reference numerals:

[0050] 1-female connector, 11-first insulating shell, 111-elevator, 112-second lock bead, 12-transition assembly, 121-first contact finger, 1211-conductive wall, 122-piston, 123-slide seat, 124-tension spring, 125-first compression spring, 13-first chamber, 14-second chamber, 15-first locking assembly, 151-locking cylinder, 1511-locking through hole, 1512-first wall, 1513-jet hole, 152-push member, 1521-push groove, 153-reset elastic member, 154-first lock bead, 16-inner shell, 17-outer shell, 2-male connector, 21 -Second insulating shell, 211-Second contact finger, 212-Insulating hole, 213-Locking hole, 214-Locking elastic member, 215-Locking block, 216-Locking groove, 217-Limiting block, 2171-Second wall, 3-Second locking assembly, 31-First locking hole, 32-Second locking hole, 33-Hydraulic pipeline, 34-First elastic member, 35-Locking block, 36-Push block, 4-Circulating flow channel, 41-One-way ventilation structure, 42-Filter element, 5-Conductive cylinder, 51-Second compression elastic member, 6-Conductive column, 7-Third compression elastic member, 8-Plug unlocking block, 81-Unlocking mating block, 82-Insulating wall. DETAILED DESCRIPTION

[0051] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. In order to better illustrate this embodiment, certain components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual size of the product.

[0052] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present invention will be further described below in conjunction with the drawings and embodiments.

[0053] Reference Figures 1 to 8 , an electrical connection terminal, comprising a female connector 1 and a male connector 2, the female connector 1 comprising a first insulating shell 11, a transition assembly 12 being slidably connected within the first insulating shell 11, and a first contact finger 121 being provided on the transition assembly 12;

[0054] A power-off point and a power-on point are provided on the moving track of the transition component 12. A first chamber 13 is formed between the end of the transition component 12 close to the power-on point and the first insulating shell 11. A second chamber 14 is formed between the end of the transition component 12 close to the power-off point and the first insulating shell 11.

[0055] The male connector 2 can drive the transition assembly 12 to move back and forth between the power-on position and the power-off position. The male connector 2 includes a second insulating shell 21 , on which a second contact finger 211 is provided to cooperate with the first contact finger 121 .

[0056] When the male connector 2 drives the transition assembly 12 to move toward the energized point, the gas in the first chamber 13 can be compressed;

[0057] When the male connector 2 drives the transition assembly 12 to move toward the power-off point, the gas in the first chamber 13 can flow between the first contact finger 121 and the second contact finger 211 .

[0058] During the process of inserting the male connector 2 into the female connector 1, the second insulating shell 21 drives the transition assembly 12 to move from the power-off point to the power-on point, thereby compressing the gas in the first chamber 13. In the process of removing the second insulating shell 21, the gas in the first chamber 13 can flow between the first contact finger 121 and the second contact finger 211, thereby achieving the effect of automatically controlling the gas flow and extinguishing the arc.

[0059] As a further improvement of the present invention, a separation point is provided between the power-on point and the power-off point. When the transition component 12 moves to the separation point, the second contact finger 211 keeps moving toward the power-off point, and the first contact finger 121 tends to move toward the power-on point.

[0060] When the transition assembly 12 moves to the separation point, as a specific embodiment of the present invention, the second contact finger 211 on the second insulating shell 21 remains in a state of movement toward the power-off point under the action of the third compressible elastic member 7, while the first contact finger 121, under the action of the tension spring 124, tends to move toward the power-on point, allowing the first contact finger 121 and the second contact finger 211 to quickly move away from each other. The probability of arcing is inversely proportional to the distance. The faster the separation speed, the greater the distance required to generate an arc, thereby reducing the possibility of arcing, further reducing arcing, and improving product safety.

[0061] As a further improvement of the present invention, a first locking assembly 15 is provided between the first insulating shell 11 and the transition assembly 12. The first locking assembly 15 has a locked state and an unlocked state. When the first locking assembly 15 is in the locked state, the second insulating shell 21 and the transition assembly 12 are connected as a whole.

[0062] When the first locking assembly 15 is in the unlocked state, the second insulating shell 21 and the transition assembly 12 can be separated;

[0063] When the second insulating shell 21 and the transition assembly 12 move between the energized position and the disconnected position, the first locking assembly 15 is in a locked state.

[0064] Specifically, when the transition assembly 12 moves from the energized position to the de-energized position, the first locking assembly 15 switches from the locked state to the unlocked state. At the moment the first locking assembly 15 switches to the unlocked state, the second contact finger 211 continues to move toward the de-energized position, while the first contact finger 121 tends to move toward the energized position. This allows the first contact finger 121 and the second contact finger 211 to quickly separate.

[0065] Reference Figure 2 and Figure 5 The first locking assembly 15 includes a locking cylinder 151, a pushing member 152 slidably disposed in the locking cylinder 151, a restoring elastic member 153 connected to the locking cylinder 151 and the pushing member 152, and a first locking ball 154. The locking cylinder 151 is provided with a locking through hole 1511 for accommodating the first locking ball 154. The locking through hole 1511 is provided with a first wall 1512. The pushing member 152 is provided with a pushing groove 1521.

[0066] The second insulating shell 21 is provided with an insulating hole 212 for the locking cylinder 151 to be inserted. The inner wall of the insulating hole 212 is provided with a locking hole 213. The locking hole 213 is provided with a locking elastic member 214 and a locking block 215.

[0067] The first insulating shell 11 is connected to a push rod 111 located on the moving track of the push member 152;

[0068] In the process of the male connector 2 driving the transition assembly 12 to move from the power-off point to the separation point, the push rod 111 abuts against the push piece 152 and pushes the push piece 152 close to the second insulating shell 21. When the transition assembly 12 is at the separation point, the push groove 1521 corresponds to the first locking bead 154, so that the first locking bead 154 enters the push groove 1521, and the locking elastic member 214 drives the locking block 215 to abut against the first wall 1512 to lock the movement of the locking cylinder 151.

[0069] In the process of the male connector 2 driving the transition assembly 12 to move from the power-on point to the separation point, the pushing member 152 gradually moves away from the second insulating shell 21 under the action of the reset elastic member 153, so that the pushing groove 1521 and the first locking bead 154 are misaligned, pushing the first locking bead 154 to move toward the locking hole 213, pushing the locking block 215 to disengage from the first wall 1512, so that when the first locking assembly 15 is in the unlocked state, the second insulating shell 21 and the transition assembly 12 can be separated.

[0070] Reference Figure 2 and Figure 5 , the side wall of the locking cylinder 151 is provided with an air injection hole 1513;

[0071] During the process of the transition assembly 12 moving from the separation point to the power-off point, the air injection hole 1513 is in an open state;

[0072] When the transition assembly 12 is in the power-on position or the power-off position, the air injection hole 1513 is in a closed state.

[0073] As one embodiment of the present invention, when the transition assembly 12 is in the power-off position, the pusher 152 covers the air jet 1513, thereby closing the air jet 1513. When the transition assembly 12 is in the power-on position, the first and second contact fingers 121, 211 cover the air jet 1513, thereby closing the air jet 1513. As the transition assembly 12 moves from the separation position to the power-off position, the pusher 152 moves away from the air jet 1513, and the first and second contact fingers 121, 211 separate, allowing the compressed gas in the first chamber 13 to be ejected through the air jet 1513.

[0074] More specifically, due to the configuration of the first locking assembly 15, as the male connector 2 drives the transition assembly 12 from the energized position to the disconnected position, the first contact finger 121 and the second contact finger 211 maintain contact and cover the air jet hole 1513, preventing the compressed gas in the first chamber 13 from being ejected through the air jet hole 1513. When the first locking assembly 15 is switched to the unlocked state, the second contact finger 211 continues to move toward the de-energized position, while the first contact finger 121 tends to move toward the energized position. As a result, the first and second contact fingers 121, 211 rapidly move away from each other. At this point, the first and second contact fingers 121, 211 no longer cover the air jet hole 1513, allowing the compressed gas in the first chamber 13 to be ejected directly through the air jet hole 1513. Furthermore, because the first and second contact fingers 121, 211 separate in opposite directions, the compressed gas ejected from the air jet hole 1513 can directly act between the first and second contact fingers 121, 211, achieving the technical effect of fully automatic air jet arc extinguishing.

[0075] As a further improvement of the present invention, the transition assembly 12 includes a piston 122 and a slide 123. In this embodiment, the piston 122 is sealed and slidably connected to the first insulating shell 11. The slide 123 is located at one end of the piston 122 close to the power-on point. A tension spring 124 is provided between the slide 123 and the piston 122. A first compression spring 125 is connected between the slide 123 and the first insulating shell 11. The first compression spring 125 causes the slide 123 to have a tendency to move toward the power-off point.

[0076] The first insulating shell 11 is provided with a second locking assembly 3 acting on the slide 123, and the second locking assembly 3 has a locked state and an unlocked state;

[0077] When the second locking assembly 3 is in the locked state, the second locking assembly 3 locks the slide 123 at the power-on position;

[0078] When the second locking assembly 3 is in the unlocked state, the slide 123 keeps moving toward the power-off point;

[0079] When the piston 122 moves to the power-off position, the second locking assembly 3 is in an unlocked state.

[0080] Specifically, in a conventional contact finger separation structure, the moment the contacts switch from an energized state to an unenergized state, the spring releases its stored elastic energy, leveraging this energy to separate the contacts. However, when the spring initially releases this elastic energy, the contacts remain stationary. This elastic energy causes the contacts to transition from a stationary state to a moving state, gradually increasing their speed, which in turn increases the speed of contact separation. This indicates that the acceleration of the contacts by elastic energy requires a certain period of time, resulting in a slower separation speed in the initial stage of contact separation in conventional contact finger separation structures, which is clearly detrimental to arc extinguishing.

[0081] In this embodiment, during the movement of the second insulating shell 21 from the energized position to the disconnected position, the first locking assembly 15 remains locked, thereby driving the piston 122 to move along with it. Simultaneously, the second locking assembly 3 locks the slide 123 in the energized position, causing the piston 122 and slide 123 to move away from each other. During this period, the tension spring 124 accumulates energy. When the second insulating shell 21 moves to the disconnected position, driven by the second insulating shell 21, the second contact finger 211 already has a certain speed toward the disconnected position, and the tension spring 124 has accumulated sufficient tension. Thus, when the first locking assembly 15 switches to the unlocked state, the second contact finger 211 can continue to move toward the disconnected position at a certain speed, while the first contact finger 121, under the action of the tension spring 124, first stops and then rapidly moves toward the energized position, ultimately achieving rapid separation of the first contact finger 121 from the second contact finger 211.

[0082] As a further improvement of the present invention, the second locking assembly 3 includes a first lock hole 31 located on the movement track of the second insulating shell 21, and a second lock hole 32 located on the movement track of the slide 123. The first lock hole 31 and the second lock hole 32 are connected by a hydraulic pipe 33. The first lock hole 31 and the second lock hole 32 are both provided with a first elastic member 34, a locking block 35, and a push block 36 that cooperates with the locking block 35. The push block 36 is sealingly slidably arranged in the hydraulic pipe 33;

[0083] The second insulating shell 21 and the sliding seat 123 are both provided with a locking groove 216 for the locking block 35 to be inserted;

[0084] When the piston 122 moves from the separation point to the power-off point, the second insulating shell 21 pushes the corresponding locking block 35 to disengage the locking groove 216 of the second insulating shell 21. The locking block 35 drives the pushing block 36 to compress the liquid in the hydraulic pipe 33, thereby driving the locking block 35 of the second locking hole 32 to disengage the locking groove 216 of the slide 123 and unlock the slide 123.

[0085] When the locking block 35 of the first locking hole 31 is inserted into the locking groove 216 of the second insulating shell 21 , the first elastic member 34 of the second locking hole 32 pushes the locking block 35 to insert into the locking groove 216 of the sliding seat 123 .

[0086] As a specific embodiment of the present invention, the locking block 35 and the locking block 215 mentioned in the present invention have their transmission mating surfaces both inclined, thereby directly pushing the corresponding locking block 35 downward. The first elastic member 34 and the locking elastic member 214 both adopt a U-shaped elastic structure.

[0087] As a further improvement of the present invention, a circulation channel 4 connecting the first chamber 13 and the second chamber 14 is provided on the first insulating shell 11, and a one-way ventilation structure 41 and a filter element 42 are provided in the circulation channel 4. The one-way ventilation structure 41 is used to limit the gas in the first chamber 13 from flowing into the second chamber 14 through the circulation channel 4.

[0088] As transition assembly 12 moves from the energized position to the de-energized position, it pushes the gas within second chamber 14 into first chamber 13 through circulation channel 4, reusing the gas within first insulating housing 11 and thereby reducing the operating costs of this embodiment. Simultaneously, filter element 42 filters the gas flowing through circulation channel 4 to prevent dust generated by the arc within second chamber 14 from entering first chamber 13 along with the airflow. This prevents dust from entering first chamber 13 when the first and second contact fingers separate. This prevents the airflow from affecting the arc extinguishing effect of the airflow.

[0089] In this embodiment, the gas in the first insulating shell 11 is carbon dioxide. Of course, in other embodiments, the gas in the first insulating shell 11 may also be arc-extinguishing gas.

[0090] In addition, by setting up the one-way ventilation structure 41, when the transition component 12 moves from the power-off point to the power-on point, the gas in the first chamber 13 can be restricted from flowing into the second chamber 14 through the circulation channel 4 and the gas in the first chamber 13 can be compressed.

[0091] Furthermore, the filter element 42 is made of HEPA material. The first insulating shell 11 includes an inner shell 16 and an outer shell 17 detachably connected to the inner shell 16. The inner shell 16 is provided with an air inlet and an air outlet. A gap is formed between the outer shell 17 and the inner shell 16 to form a circulation channel 4. The detachable design allows maintenance personnel to regularly replace the filter element 42.

[0092] As a further improvement of the present invention, the female connector 1 further includes a conductive cylinder 5 and a conductive post 6 slidably connected to the conductive cylinder 5. An annular conductive wall 1211 is formed on the first contact finger 121. A second compressible elastic member 51 is connected between the conductive post 6 and the conductive cylinder 5. The second compressible elastic member 51 causes the conductive post 6 to tend to move toward the power-off point.

[0093] When the transition assembly 12 is at the energized position, the disconnected position, or any position between the two, the conductive pillar 6 is in contact with the conductive wall 1211 ;

[0094] When the transition assembly 12 is located at the power-off position, the conductive pillar 6 is separated from the conductive wall 1211 .

[0095] When the male plug is inserted into the female plug and the transition assembly 12 is in the power-off position, although the first contact finger 121 cooperates with the second contact finger 211, the conductive post 6 is separated from the conductive wall 1211 at this time, and no effective electrical connection occurs at this time. Until the male plug continues to drive the transition assembly 12 to move to the separation point and the conductive post 6 contacts the conductive wall 1211, the male plug and the female plug will form an effective electrical connection, thereby improving the safety of the device.

[0096] As a further improvement of the present invention, a third compression elastic member 7 is provided between the first insulating shell 11 and the second insulating shell 21, so that the second insulating shell 21 has a tendency to move away from the first insulating shell 11, a second lock bead 112 is provided on the first insulating shell 11, and the second insulating shell 21 is provided with a limit block 217, and a second wall 2171 is provided on the limit block 217. When the limit block 217 is matched with the first insulating shell 11, the second lock bead 112 abuts against the second wall 2171.

[0097] The provision of the third compression elastic member 7 enables the second insulating shell 21 to be quickly pulled away from the first insulating shell 11 when the first locking assembly 15 is switched to the unlocked state, thereby achieving rapid separation of the second contact finger 211 .

[0098] The workflow of unplugging the male plug of the present invention is as follows:

[0099] Push the plug unlocking block 8 on the outside of the first insulating shell 11, so that the plug unlocking mating block 81 that is clamped on the second insulating shell 21 and the first insulating shell 11 is separated from the insulating wall 82 of the second insulating shell 21, and the third compression elastic member 7 drives the second insulating shell 21 to move from the power-on point to the power-off point. During the movement, the first locking assembly 15 is always in a locked state, thereby driving the piston 122 to move together, so that the piston 122 and the slide seat 123 move away from each other. During this period, the tension spring 124 accumulates energy and squeezes the gas in the second chamber 14 into the first chamber 13 through the circulation channel 4. In addition, the pushing member 152 gradually moves away from the second insulating shell 21 under the action of the reset elastic member 153, so that the first lock bead 154 gradually moves toward the edge of the pushing groove 1521. During this process, the first contact finger 121 and the second contact finger 211 always cover the injection hole 1513, and the pushing member 152 does not cover the injection hole 1513. When the second insulating shell 21 moves to the separation point (as shown in the attached figure), the first locking member 152 is locked. Figure 4 As shown, driven by the second insulating housing 21, the second contact finger 211 has already reached a certain speed toward the power-off position, and the tension spring 124 has accumulated sufficient tension. At this point, the first locking bead 154 is misaligned with the pushing groove 1521, pushing the first locking bead 154 toward the locking hole 213, pushing the locking block 215 away from the first wall 1512, and switching the first locking assembly 15 to the unlocked state. At the moment the first locking assembly 15 switches to the unlocked state, the second contact finger 211 can continue to move toward the power-off position at a certain speed, while the first contact finger 121, under the action of the tension spring 124, initially stops and then quickly moves toward the power-on position, achieving a rapid separation of the first contact finger 121 and the second contact finger 211. At the same time, the first contact finger 121 and the second contact finger 211 separate in opposite directions and no longer cover the jet hole 1513, so that the compressed gas in the first chamber 13 can be directly ejected through the jet hole 1513 between the first contact finger 121 and the second contact finger 211, achieving the technical effect of fully automatic jet arc extinguishing.

[0100] As the second insulating shell 21 continues to move toward the power-off point under the action of the third compression spring 7, when the second insulating shell 21 pushes against the corresponding locking block 35, the locking block 35 drives the corresponding push block 36 to compress the liquid in the hydraulic pipe 33, thereby driving the locking block 35 of the second lock hole 32 downward, disengaging the locking groove 216 of the slide 123, and unlocking the slide 123. At this time, the push member 152 moves to its furthest position under the action of the reset elastic member 153, so that the push member 152 covers the air injection hole 1513, thereby sealing the gas in the entire first insulating shell 11. Under the push of the first compression spring 125, the slide 123 and piston 122 move to the power-off point, continuing to squeeze the gas in the second chamber 14 into the first chamber 13, achieving the reuse of the gas in the first insulating shell 11, thereby helping to reduce the operating costs of this embodiment. At the same time, the filter element 42 filters the gas flowing through the circulation channel 4 to prevent dust generated by the arc in the second chamber 14 from entering the first chamber 13 with the airflow. In this way, when the first contact finger 121 and the second contact finger 211 separate next time, the gas in the first chamber 13 will not carry dust with it and flow through the gap between the two, thereby avoiding affecting the arc extinguishing effect of the airflow.

[0101] The workflow for inserting a male plug is as follows:

[0102] The limit block 217 on the second insulating shell 21 cooperates with the second locking bead 112 of the first insulating shell 11, thereby locking the connection between the limit block 217 and the first insulating shell 11. At the same time, the first locking assembly 15 is inserted into the insulating hole 212 of the second insulating shell 21, and the first contact finger 121 and the second contact finger 211 fit together, but the conductive column 6 does not contact the conductive wall 1211 of the second contact finger 211, so the male plug and the female plug are not powered. The second insulating shell 21 drives the first locking assembly 15 and the piston 122 to move from the power-off point to the separation point. During the movement, the volume of the second chamber 14 increases and the air pressure decreases, while the volume of the first chamber 13 decreases and the air pressure increases, so that when the subsequent jet hole 1513 is opened, there is a higher air pressure difference to spray the first contact finger 121 and the second contact finger 211. At the same time, the push rod 111 abuts against the push member 152 and pushes the push member 152 gradually closer to the second insulating shell 21, thereby shortening the distance between the push groove 1521 and the first lock bead 154. When moving to the separation point, the first lock bead 154 falls into the push groove 1521, and the locking elastic member 214 pushes the locking block 215 to abut against the first wall 1512 to lock the connection between the first locking assembly 15 and the second insulating shell 21. At this time, the conductive wall 1211 fits with the conductive column 6 to realize the electrical connection between the male plug and the female plug. The second insulating shell 21 continues to move from the separation point to the power-on point, and the conductive column 6 moves toward the conductive cylinder 5 to compress the second compression elastic member 51, and drives the piston 122 and the slide 123 to move to the power-on point.

[0103] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An electrical connection terminal, comprising a female connector and a male connector, characterized in that: The female connector includes a first insulating shell, a transition component is slidably connected in the first insulating shell, and the transition component is provided with a first contact finger; A power-off point and a power-on point are provided on the moving track of the transition component, a first chamber is formed between an end of the transition component close to the power-on point and the first insulating shell, and a second chamber is formed between an end of the transition component close to the power-off point and the first insulating shell; The male connector is capable of driving the transition assembly to move back and forth between a power-on position and a power-off position. The male connector includes a second insulating shell, on which a second contact finger is provided to cooperate with the first contact finger. When the male connector drives the transition assembly to move toward the power-on point, the gas in the first chamber can be compressed; when the male connector drives the transition assembly to move toward the power-off point, the gas in the first chamber can flow between the first contact finger and the second contact finger.

2. An electrical connection terminal according to claim 1, characterized in that: A separation point is provided between the power-on point and the power-off point. When the transition assembly moves to the separation point, the second contact finger keeps moving toward the power-off point, and the first contact finger tends to move toward the power-on point.

3. An electrical connection terminal according to claim 2, characterized in that: A first locking assembly is provided between the first insulating shell and the transition assembly, the first locking assembly having a locked state and an unlocked state. When the first locking assembly is in the locked state, the second insulating shell and the transition assembly are connected as a whole; When the first locking assembly is in an unlocked state, the second insulating shell and the transition assembly can be separated; When the second insulating shell and the transition assembly move between the power-on point and the separation point, the first locking assembly is in a locked state.

4. The electrical connection terminal according to claim 3, characterized in that: The first locking assembly includes a locking cylinder, a pushing member slidably arranged in the locking cylinder, a reset elastic member connected to the locking cylinder and the pushing member, and a first locking ball, the locking cylinder is provided with a locking through hole for accommodating the first locking ball, the locking through hole is provided with a first wall, and the pushing member is provided with a pushing groove; The second insulating shell is provided with an insulating hole for the locking cylinder to be inserted, the inner wall of the insulating hole is provided with a locking hole, and a locking elastic member and a locking block are provided in the locking hole; The first insulating shell is connected to a push rod located on the moving track of the push member; In the process of the male connector driving the transition assembly to move from the power-off point to the separation point, the push rod abuts against the push piece and pushes the push piece close to the second insulating shell. When the transition assembly is at the separation point, the push groove corresponds to the first lock bead, so that the first lock bead enters the push groove, and the locking elastic member drives the locking block to abut against the first wall to lock the movement of the locking cylinder.

5. The electrical connection terminal according to claim 4, characterized in that: The side wall of the locking cylinder is provided with an air injection hole; During the process of the transition assembly moving from the separation point to the power-off point, the air injection hole is in an open state; When the transition assembly is in the power-on position or the power-off position, the air injection hole is in a closed state.

6. The electrical connection terminal according to claim 2, characterized in that: The transition assembly includes a piston and a slide seat. The slide seat is located at one end of the piston close to the power-on point. A tension spring is provided between the slide seat and the piston. A first compression spring is connected between the slide seat and the first insulating shell. The first compression spring causes the slide seat to have a tendency to move toward the power-off point. The first insulating shell is provided with a second locking assembly acting on the slide, the second locking assembly having a locked state and an unlocked state; When the second locking assembly is in a locked state, the second locking assembly locks the slide at the power-on point; When the second locking assembly is in the unlocked state, the slide maintains a tendency to move toward the power-off point; When the piston moves to the power-off point, the second locking assembly is in an unlocked state.

7. An electrical connection terminal according to claim 6, characterized in that: The second locking assembly includes a first locking hole located on the moving track of the second insulating shell, and a second locking hole located on the moving track of the slide, the first locking hole and the second locking hole are connected by a hydraulic pipeline, and the first locking hole and the second locking hole are both provided with a first elastic member, a locking block, and a push block cooperating with the locking block, and the push block is sealingly slidably arranged in the hydraulic pipeline; The second insulating shell and the sliding seat are both provided with a locking groove for the locking block to be inserted; During the process of the piston moving from the separation point to the power-off point, the second insulating shell pushes the corresponding locking block to disengage it from the locking groove of the second insulating shell. The locking block drives the pushing block to compress the liquid in the hydraulic pipeline, thereby driving the locking block of the second lock hole to disengage from the locking groove of the slide seat and unlock the slide seat; When the locking block of the first locking hole is inserted into the locking groove of the second insulating shell, the first elastic member of the second locking hole pushes the locking block to be inserted into the locking groove of the sliding seat.

8. The electrical connection terminal according to claim 1, characterized in that: The first insulating shell is provided with a circulation channel connecting the first chamber and the second chamber. The circulation channel is provided with a one-way ventilation structure and a filter element. The one-way ventilation structure is used to limit the gas in the first chamber from flowing into the second chamber through the circulation channel.

9. The electrical connection terminal according to claim 2, characterized in that: The female connector further includes a conductive cylinder and a conductive post slidably connected to the conductive cylinder. An annular conductive wall is formed on the first contact finger. A second compressive elastic member is connected between the conductive post and the conductive cylinder. The second compressive elastic member causes the conductive post to tend to move toward the power-off point. When the transition assembly is at the energized position, the disconnected position, or any position therebetween, the conductive post contacts the conductive wall; When the transition assembly is located at the power-off point, the conductive column is separated from the conductive wall.

10. The electrical connection terminal according to claim 1, characterized in that: A third compression elastic member is provided between the first insulating shell and the second insulating shell, so that the second insulating shell has a tendency to move away from the first insulating shell. A second locking bead is provided on the first insulating shell, and a limiting block is provided on the second insulating shell. A second wall is provided on the limiting block. When the limiting block is matched with the first insulating shell, the second locking bead abuts against the second wall.

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