Delay secondary power connection structure

Abstract

The utility model discloses a delay secondary power connection structure, which is arranged in a socket for conductive connection between a plug and the socket, and comprises a static sheet, a moving sheet, a conductive rod and a coil spring, the static sheet is fixedly arranged in the socket and is detachably connected with a wiring terminal in the socket, and the moving sheet is movably arranged in the socket in a limiting manner; the two ends of the coil spring are detachably connected with the moving plate and the conducting rod respectively, and the conducting rod is inserted through the pin and makes contact with the moving plate so as to rotate relative to the socket and be conductively connected with the static plate and the moving plate. According to the utility model, electric sparks generated when the plug is conductively connected with the socket can be prevented from appearing at the abutting parts of the pins of the plug and the movable plate, so that the pins of the plug are effectively prevented from being corroded by high temperature and burnt due to the electric sparks, and the service life of the plug is prolonged; and the phenomena of poor contact or loose virtual connection and the like of the plug and the socket due to burning loss of the pins can be prevented, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, in particular to a delayed secondary power connection structure. Background Art

[0002] A socket, also known as a power socket or a switch socket. A socket refers to a seat into which one or more circuit wiring can be inserted, through which various wirings can be inserted. Usually, socket sets are provided with socket sleeves, whose main function is to provide a current path to ensure stable and safe conduction when a plug is inserted. As an indispensable electrical accessory in daily life, the safety, convenience and intelligent level of sockets have attracted more and more attention. During the power connection process of a socket, since the metal parts of the plug and the socket are in direct contact, electric sparks often occur instantaneously when the power is turned on. Such electric sparks may not be conspicuous in an ordinary environment, but under specific conditions, such as in a flour mill, a wood processing workshop and other places with dense dust, the electric sparks are likely to become the ignition source for triggering dust explosion, posing a potential safety hazard.

[0003] In the existing technology, the power connection of sockets basically adopts a direct connection method, that is, as long as the plug is inserted into the socket, the pins of the plug contact the socket sleeves inside the socket to achieve the conduction of the circuit. From a physical point of view, electric sparks are inevitably generated instantaneously during the power connection, and the electric sparks will corrode the plug and the socket sleeves. The long-term electric corrosion will cause the plug and the socket sleeves to burn out, thus shortening the service life of the plug and the socket sleeves, and easily causing poor contact and loose virtual connection between the plug and the socket, further causing the temperature to rise and leading to the occurrence of electrical fires, reducing the use safety. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a delayed secondary power connection structure, aiming to solve the problems that electric sparks are easily generated when the existing plug is inserted into the socket, the pins of the plug are prone to ablation phenomenon, shortening the service life, and reducing the use safety.

[0005] To achieve the above purpose, the utility model provides a delayed secondary power connection structure, which is arranged inside the socket for conductive connection between the plug and the socket, and includes a static piece, a moving piece, a conductive rod and a coil spring. The static piece is fixedly installed inside the socket and is detachably connected to the wiring terminal inside the socket. The moving piece is installed inside the socket with limited movement. The two ends of the coil spring are respectively detachably connected to the moving piece and the conductive rod. The conductive rod is inserted into and contacts the moving piece through the pin to rotate relative to the socket and conductively connect with the static piece and the moving piece.

[0006] Preferably, two limiting parts for abutting against the conductive rod are formed on the inner wall of the socket. Among them, one limiting part is arranged close to the static piece, and the other limiting part is located between the coil spring and the moving piece.

[0007] Preferably, both ends of the moving piece are a conducting end and an abutting end respectively. An elastic member is disposed between the bottom surface of the conducting end and the socket, and an insertion sleeve for inserting a pin is formed on the top surface of the conducting end. The abutting end is used for abutting against one end of the conducting rod.

[0008] Preferably, first contacts are detachably installed at the abutting end and the end of the static piece away from the terminal respectively. The two first contacts are respectively used for abutting against both ends of the conducting rod.

[0009] Preferably, bosses are respectively formed corresponding to the bottom surfaces of the conducting end and the socket. The elastic member is a spring, and the two bosses respectively extend into both ends of the elastic member.

[0010] Preferably, a guiding groove is formed in the inner wall of the socket along its height direction, and a first protrusion which is in sliding contact fit with the guiding groove is formed on the side wall of the conducting end.

[0011] Preferably, a through hole is formed in the outer wall of the conducting rod, a second protrusion is formed on the side of the moving piece facing the spiral spring, one end of the spiral spring is clamped in the through hole, and the other end of the spiral spring is hung on the second protrusion.

[0012] Preferably, second contacts are detachably installed at both ends of the conducting rod.

[0013] Beneficial effects:

[0014] 1. In a delayed secondary power connection structure of the present utility model, through the secondary power connection between the static piece and the moving piece, it is possible to avoid the electric spark generated when the plug is conductively connected to the socket from appearing at the abutting position between the pin of the plug and the moving piece, effectively preventing the pin of the plug from being corroded by high temperature and burned due to the electric spark. This not only extends the service life of the plug, but also prevents phenomena such as poor contact or loose and virtual connection between the plug and the socket due to the burned pin of the plug, and the use is reliable.

[0015] 2. In a delayed secondary power connection structure of the present utility model, if the plug is loose or inserted in place such that the secondary power connection between the static piece and the moving piece is not completed, at this time, the static piece and the moving piece cannot form a conductive path through the conducting rod, so that the socket cannot transmit electric energy to the plug, that is, the conductive connection between the plug and the socket is in a disconnected state. Furthermore, it can effectively avoid electric shock accidents caused by the plug being inserted in place or accidentally loosening, reduce potential safety hazards, and improve the use safety.

[0016] 3. When the plug is unplugged, the moving piece loses the abutment limit of the pin and moves relative to the socket limit to the initial position. At this time, the coil spring rebounds and synchronously drives the conductive rod to rotate in the reverse direction for automatic reset, so that both ends of the conductive rod are separated from the static piece and the moving piece, thereby automatically disconnecting the secondary power connection between the static piece and the moving piece. At this time, the socket is in a power-off state. This automatic reset power-off function can be used in conjunction with the protection door at the socket jack to prevent children's fingers or other foreign objects from reaching into the socket and causing electric shock accidents, further improving the safety of using the socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 FIG. is a schematic structural diagram of a delayed secondary power connection structure and a plug according to an embodiment of the present invention;

[0019] Figure 2 is Figure 1 a partial enlarged view of A in

[0020] Figure 3 FIG. is a schematic structural diagram of a delayed secondary power connection structure according to an embodiment of the present invention when the plug is not inserted;

[0021] Figure 4 FIG. is a schematic structural diagram of a delayed secondary power connection structure according to an embodiment of the present invention when the plug is inserted.

[0022] In the figure: 100 - plug; 1 - static piece; 2 - moving piece; 3 - conductive rod; 4 - coil spring; 5 - limiting part; 6 - conduction end; 7 - abutting end; 8 - elastic member; 9 - socket; 10 - first contact; 11 - boss; 12 - guiding groove; 13 - first protrusion; 14 - through hole; 15 - second protrusion; 16 - second contact. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0024] Accordingly, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0025] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, in the description of the present application, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0027] In addition, in the description of the present application, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0029] Embodiment 1:

[0030] The present utility model provides a delayed secondary power connection structure.

[0031] In an embodiment of the present utility model, a delayed secondary power connection structure is disposed in a socket for electrically connecting a plug 100 and the socket. The structure includes a static piece 1, a moving piece 2, a conductive rod 3, and a coil spring 4. The static piece 1 is fixedly installed in the socket and is detachably connected to a terminal in the socket. The moving piece 2 is installed in the socket in a limited movement manner. The two ends of the coil spring 4 are respectively detachably connected to the moving piece 2 and the conductive rod 3. The conductive rod 3 is inserted into and contacts the moving piece 2 through a pin to rotate relative to the socket and is electrically connected to the static piece 1 and the moving piece 2.

[0032] Specifically, as Figures 1 to 4 shown, in a delayed secondary power connection structure of the present utility model, since the static piece 1 is fixedly installed in the socket and is detachably connected to a terminal in the socket, the static piece 1 can be used as one pole of the electrical connection and waits to establish an electrical conduction path with the moving piece 2. Further, since the moving piece 2 is installed in the socket in a limited movement manner, the installation method of the moving piece 2 in the socket with limited movement can adopt spring connection, that is, by connecting the spring to the moving piece 2, the moving piece 2 can move relative to the socket in a limited manner when the plug 100 is inserted or pulled out. During the process of inserting the plug 100 into the socket, the pin of the plug 100 abuts against the moving piece 2 and thereby pushes the moving piece 2 to move relative to the socket in a limited manner. Since the two ends of the coil spring 4 are respectively detachably connected to the moving piece 2 and the conductive rod 3, the coil spring 4 is gradually compressed under the drive of the moving piece 2 and synchronously drives the conductive rod 3 to rotate relative to the socket. When the pin is completely inserted into the socket, at this time the coil spring 4 is in a completely compressed state, and the conductive rod 3 is in a state of abutting against the static piece 1 and the moving piece 2 under the drive of the coil spring 4. Thus, the static piece 1 and the moving piece 2 can form an electrical conduction path through the conductive rod 3, and thereby the electrical connection between the plug 100 and the socket can be completed. The structural design is ingenious and reasonable.

[0033] Understandably, during the process of inserting the plug 100 into the socket, the top of the pin first comes into contact with the moving piece 2, thereby achieving the first electrical connection between the plug 100 and the moving piece 2; as the plug 100 continues to be inserted deeper, the pin continuously pushes the moving piece 2 and causes the moving piece 2 to move relative to the socket, so that the coil spring 4 detachably connected to the moving piece 2 gradually tends to a compressed state, and thereby drives the conductive rod 3 to rotate synchronously through the coil spring 4, so that both ends of the conductive rod 3 come into contact with the static piece 1 and the moving piece 2 respectively, and then the second electrical connection between the static piece 1 and the moving piece 2 can be achieved. Obviously, the socket can only supply electrical energy to the plug 100 after the plug 100 is completely inserted, that is, after the second electrical connection between the static piece 1 and the moving piece 2 is completed. Before the second electrical connection between the static piece 1 and the moving piece 2 is completed, the pins of the plug 100 and the moving piece 2 are already in a state of mutual contact, that is, the first electrical connection between the plug 100 and the moving piece 2 is completed, thereby being able to avoid the electric spark generated when the plug 100 is electrically connected to the socket from appearing at the contact between the pins of the plug 100 and the moving piece 2, effectively preventing the pins of the plug 100 from being corroded by high temperature due to the electric spark and causing burnout, not only extending the service life of the plug 100, but also preventing the plug 100 from having problems such as poor contact or loose virtual connection with the socket due to pin burnout, and the use is reliable. At the same time, if the plug 100 is not inserted in place and the two ends of the conductive rod 3 do not come into contact with the static piece 1 and the moving piece 2, that is, when the second electrical connection between the static piece 1 and the moving piece 2 is not completed, at this time, the static piece 1 and the moving piece 2 cannot form a conductive path through the conductive rod 3, so that the socket cannot transmit electrical energy to the plug 100, that is, the electrical connection between the plug 100 and the socket is in a disconnected state, thereby being able to effectively avoid electric shock accidents caused by the plug 100 not being inserted in place or accidentally loosening, reducing potential safety hazards and improving the use safety.

[0034] It is worth noting that when the plug 100 is pulled out, the moving piece 2 loses the abutment limit of the pin and moves relative to the socket limit to the initial position. At this time, the coil spring 4 rebounds and synchronously drives the conductive rod 3 to rotate in the reverse direction for automatic reset, so that both ends of the conductive rod 3 are separated from the static piece 1 and the moving piece 2, thereby being able to automatically disconnect the second electrical connection between the static piece 1 and the moving piece 2. At this time, the socket is in a power-off state. This automatic reset power-off function can be used in conjunction with the protection door at the socket jack to prevent children's fingers or other foreign objects from reaching into the socket and causing electric shock accidents, further improving the use safety of the socket.

[0035] It should be noted that a utility model of the present invention is correspondingly provided for each of the live wire terminal, neutral wire terminal and ground wire terminal in the socket, and each terminal is detachably connected to the corresponding static piece 1 respectively, so as to realize the secondary power connection protection for each pin of the plug 100. At the same time, since the function of the pin of the plug 100 for grounding is to connect the metal shell of the electrical equipment to the ground to form a grounding protection, in actual application, the utility model of the present invention can be selectively arranged on the ground wire terminal according to the usage situation, thereby saving the production and manufacturing cost of the socket.

[0036] In an embodiment, two limiting parts 5 for abutting against the conductive rod 3 are formed on the inner wall of the socket. Among them, one limiting part 5 is arranged close to the static piece 1, and the other limiting part 5 is located between the coil spring 4 and the moving piece 2. Specifically, as Figures 1 to 4 shown, since a limiting part 5 is arranged at the position close to the static piece 1, when the plug 100 is not inserted into the socket, the conductive rod 3 is always in abutment with the limiting part 5 under the elastic force of the coil spring 4. At this time, the conductive rod 3 is in the initial position, so as to realize the constraint and limitation of the conductive rod 3 when the plug 100 is not inserted, and ensure that the conductive rod 3 can rotate along a preset path under the drive of the coil spring 4 and establish a stable conductive path with the static piece 1 and the moving piece 2 after the plug 100 is inserted. Further, since another limiting part 5 is arranged between the coil spring 4 and the moving piece 2, when the plug 100 is inserted in place, at this time, the conductive rod 3 rotates under the drive of the coil spring 4 and abuts against the limiting part 5, and through this limiting part 5, the conductive rod 3 can always be in the working position of abutting against the static piece 1 and the moving piece 2, so as to ensure the stability of the conductive path between the static piece 1 and the moving piece 2. In addition, it is worth noting that the limiting part 5 arranged between the coil spring 4 and the moving piece 2 can limit the moving direction of the moving piece 2, that is, when the plug 100 is not inserted into the socket, at this time, the moving piece 2 is limited to move to the initial position and abuts against the limiting part 5, thereby preventing the moving piece 2 from deflecting and facilitating the stable abutment of the moving piece 2 with the pin after the plug 100 is inserted.

[0037] In an embodiment, the two ends of the moving piece 2 are respectively a conducting end 6 and an abutting end 7. An elastic member 8 is arranged between the bottom surface of the conducting end 6 and the socket, and a socket 9 for inserting the pin is formed on the top surface of the conducting end 6. The abutting end 7 is used for abutting against one end of the conductive rod 3. Specifically, as Figures 1 to 4As shown, the socket 9 formed on the top surface of the conducting end 6 can ensure good contact between the pins and the moving piece 2 when the plug 100 is inserted. Further, by providing an elastic member 8 between the bottom surface of the conducting end 6 and the socket, certain elasticity and pressure can be provided when the pins are inserted into the socket 9 to ensure stable contact between the pins and the socket 9, guarantee the stability of current transmission, and the elastic member 8 can drive the automatic reset of the moving piece 2 when the plug 100 is not inserted. At this time, the moving piece 2 can abut against the limiting portion 5 between the spiral spring 4 and the moving piece 2, so that the spiral spring 4 rebounds and drives the conductive rod 3 to disconnect the conductive paths between the static piece 1 and the moving piece 2. The structural design is simple and reasonable.

[0038] In one embodiment, first contacts 10 are respectively detachably mounted on the abutting end 7 and the end of the static piece 1 away from the terminal. The two first contacts 10 are respectively used for abutting against the two ends of the conductive rod 3. As Figures 1 to 4 shown, it can be understood that the distance between the abutting end 7 and the static piece 1 can be reduced by the two first contacts 10, and when the plug 100 is inserted, the two first contacts 10 can tightly abut against the conductive rod 3 to form a stable conductive channel, thereby reducing the contact resistance, improving the conductive efficiency, and reducing the heat and energy consumption generated due to poor contact. Further, the two first contacts 10 are both designed to be detachable, making the maintenance and replacement of the socket simpler and faster. If a certain first contact 10 is worn or damaged due to long-term use of the socket, the maintenance personnel can replace the corresponding first contact 10 alone without replacing the entire static piece 1 or moving piece 2, thereby reducing the maintenance cost and time.

[0039] In one embodiment, bosses 11 are respectively formed on the bottom surfaces of the conducting end 6 and the socket. The elastic member 8 is a spring, and the two bosses 11 respectively extend into the two ends of the elastic member 8. Specifically, as Figures 1 to 4 shown, the elastic member 8 in this embodiment can be a spring in the prior art. The spring has the characteristics of compact structure, easy material selection, and large elastic deformation force, etc., so as to facilitate driving the moving piece 2 to move relative to the socket. Further, by respectively forming bosses 11 on the bottom surfaces of the conducting end 6 and the socket, and the two bosses 11 respectively extend into the two ends of the elastic member 8, the elastic member 8 can be stably installed between the conducting end 6 and the socket, and the elastic member 8 is not prone to displacement or falling off, improving the stability and reliability of the overall structure.

[0040] In one embodiment, a guiding groove 12 is formed on the inner wall of the socket along its height direction, and a first protrusion 13 in sliding contact and cooperation with the guiding groove 12 is formed on the side wall of the conducting end 6. As Figures 1 to 4As shown, it can be understood that during the movement of the moving piece 2, the first protrusion 13 on the side wall of the conduction end 6 will slide along the guiding groove 12 on the inner wall of the socket. Through the guiding groove 12, the movement track of the conduction end 6 can be restricted, enabling it to move only along a predetermined direction, thereby ensuring the stability and accuracy of the moving piece 2 during movement, and avoiding poor contact with the pins due to the shaking or deviation of the moving piece 2. At the same time, the sliding contact and cooperation between the guiding groove 12 and the first protrusion 13 can play a guiding role in the movement of the moving piece 2, making the movement of the moving piece 2 smoother and more stable.

[0041] In one embodiment, specifically, as Figure 1 and Figure 2 shown, a through hole 14 is formed on the outer wall of the conductive rod 3. A second protrusion 15 is formed on the side of the moving piece 2 facing the spiral spring 4. One end of the spiral spring 4 is clamped in the through hole 14, and the other end of the spiral spring 4 is hung on the second protrusion 15. Thus, the spiral spring 4 can drive the conductive rod 3 to rotate relative to the socket synchronously under the action of the moving piece 2, and further realize the on-off of the conductive path between the conductive rod 3, the static piece 1 and the moving piece 2. The structural design is ingenious and reasonable. At the same time, since one end of the spiral spring 4 is clamped in the through hole 14 and the other end of the spiral spring 4 is hung on the second protrusion 15, it is conducive to the disassembly, assembly and replacement of components such as the spiral spring 4, the conductive rod 3, the static piece 1 and the moving piece 2, which is convenient for maintenance.

[0042] In one embodiment, as Figure 3 and Figure 4 shown, second contacts 16 are respectively detachably installed at both ends of the conductive rod 3, making the maintenance and replacement of the socket simpler and faster. If a certain second contact 16 is worn or damaged due to long-term use of the socket, the maintenance personnel can replace the corresponding second contact 16 alone without replacing the entire conductive rod 3, thereby reducing the maintenance cost and time. At the same time, when a conductive path is formed between the conductive rod 3, the static piece 1 and the moving piece 2, at this time, the conductive rod 3 abuts against the two first contacts 10 on the static piece 1 and the moving piece 2 through the two second contacts 16, and both the two first contacts 10 and the second contacts 16 can be silver points in the prior art. As one of the excellent conductors in electrical connection, silver has a low resistivity. Therefore, replacing the abutment of the conductive rod 3, the static piece 1 and the moving piece 2 with the two first contacts 10 and the second contacts 16 can ensure the smooth flow of current, reduce the contact resistance and improve the conductive efficiency.

[0043] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A delayed secondary electrical connection structure, arranged in a socket for conductive connection between a plug and the socket, characterized in that: The invention comprises a static piece (1), a movable piece (2), a conductive rod (3) and a coil spring (4); the static piece (1) is fixedly installed in the socket and is detachably connected to the wiring terminal in the socket; the movable piece (2) is limitedly installed in the socket; the two ends of the coil spring (4) are detachably connected to the movable piece (2) and the conductive rod (3); the conductive rod (3) is inserted into and contacts the movable piece (2) through a pin so as to rotate relative to the socket and be conductively connected to the static piece (1) and the movable piece (2).

2. A delayed secondary electrical connection structure according to claim 1, characterized in that: Two limiting portions (5) for contacting the conductive rod (3) are formed on the inner wall of the socket, wherein one limiting portion (5) is arranged close to the static plate (1), and the other limiting portion (5) is located between the coil spring (4) and the movable plate (2).

3. A delayed secondary electrical connection structure according to claim 2, characterized in that: The two ends of the movable plate (2) are respectively a conducting end (6) and an abutting end (7); an elastic member (8) is provided between the bottom surface of the conducting end (6) and the socket, and a socket (9) is formed on the top surface of the conducting end (6) for inserting a pin; the abutting end (7) is used to abut against one end of the conductive rod (3).

4. A delayed secondary electrical connection structure according to claim 3, characterized in that: The abutting end (7) and the end of the static piece (1) away from the wiring terminal are respectively detachably mounted with first contacts (10), and the two first contacts (10) are respectively used to abut against the two ends of the conductive rod (3).

5. The delayed secondary connection structure according to claim 3, characterized in that: Bosses (11) are formed on the bottom surface of the conducting end (6) and the socket respectively. The elastic member (8) is a spring. The two bosses (11) extend into the two ends of the elastic member (8) respectively.

6. A delayed secondary electrical connection structure according to claim 5, characterized in that: A guide groove (12) is provided on the inner wall of the socket along its height direction, and a first protrusion (13) is formed on the side wall of the conducting end (6) to slide in contact with the guide groove (12).

7. A delayed secondary electrical connection structure according to any one of claims 1 to 6, characterized in that: A through hole (14) is provided on the outer wall of the conductive rod (3); a second protrusion (15) is formed on the side of the movable plate (2) facing the coil spring (4); one end of the coil spring (4) is clamped in the through hole (14), and the other end of the coil spring (4) is mounted on the second protrusion (15).

8. A delayed secondary electrical connection structure according to any one of claims 1 to 6, characterized in that: Second contacts (16) are detachably mounted on both ends of the conductive rod (3).

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