Industrial socket and industrial plug and socket system

Abstract

The invention discloses an industrial socket and an industrial plug and socket system. The industrial socket comprises a socket body provided with a plug bush; the socket body is provided with a mounting hole, and an on-off control unit is arranged in the mounting hole; the on-off control unit comprises a first conducting rod, a first spring and a second conducting rod which are arranged along the axial direction of the mounting hole; in a normal state, the first spring enables the first conducting rod and the second conducting rod to be separated. The first conducting rod and the second conducting rod are respectively connected with a first wiring part and a second wiring part which are externally connected with a control loop; the first conducting rod and the second conducting rod are constructed to be suitable for overcoming the elastic force of the first spring to generate relative movement and form electrical contact under the driving of the insertion action of the industrial plug; the device is reasonable in structural arrangement, higher in use safety and very good in practicability.

Description

Technical Field

[0001] This invention relates to the field of industrial electrical connection technology, and more particularly to an industrial socket and industrial plug-socket system. Background Technology

[0002] Industrial sockets and plugs, as critical electrical interfaces, are directly related to the safety of personnel and equipment. Current mainstream industrial socket systems have a fundamental safety flaw in their design and usage logic: after power is connected, the conductive sleeves inside the socket remain continuously energized, making it essentially a "perpetually energized exposed port." The exposed or partially exposed energized sleeves pose a continuous threat of electric shock to operators, and routine maintenance or accidental contact can lead to safety accidents. Furthermore, during plug insertion or removal, arcing can easily occur between the plug prongs and the energized sleeves inside the socket, potentially causing further safety hazards. Summary of the Invention

[0003] In response, the present invention provides an industrial socket and plug socket system with higher safety.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, the present invention provides an industrial socket, comprising a socket body with a socket sleeve; the socket body has a mounting hole, and a switching control unit is disposed within the mounting hole; the switching control unit includes a first conductive rod, a first spring, and a second conductive rod disposed axially along the mounting hole; normally, the first spring keeps the first conductive rod and the second conductive rod separated; the first conductive rod and the second conductive rod are respectively connected to a first wiring portion and a second wiring portion for connecting an external control circuit; the first conductive rod and the second conductive rod are configured to overcome the elastic force of the first spring and generate relative movement and form electrical contact under the drive of the insertion action of an industrial plug.

[0006] Preferably, a second spring is further provided in the mounting hole, the second spring acting on the end of the second conductive rod opposite to the first spring; the elastic coefficient of the second spring is greater than that of the first spring.

[0007] Preferably, the diameter of the spring wire of the second spring is greater than the diameter of the spring wire of the first spring.

[0008] Preferably, the on / off control unit further includes an insulating top rod movably disposed in the mounting hole, the inner end of the insulating top rod abutting against the first conductive rod, for transmitting external thrust to the first conductive rod.

[0009] Preferably, the on / off control unit further includes an insulating guide sleeve, which is disposed in the mounting hole and located between the first spring and the second conductive rod, and the insulating guide sleeve has a guide hole through which one end of the first conductive rod passes.

[0010] Preferably, the first wiring portion and / or the second wiring portion includes a wiring hole disposed on the first conductive rod and / or the second conductive rod, a threaded hole communicating with the wiring hole, and a wire clamping bolt screwed into the threaded hole.

[0011] Preferably, a wire-passing hole is provided on the side wall of the mounting hole, and the wire-passing hole is a strip-shaped hole extending along the axial direction of the mounting hole.

[0012] Secondly, the present invention also provides an industrial plug and socket system, comprising: an industrial plug having prongs and a triggering structure for driving; an industrial socket as described in any of the above claims; a control circuit including a switch actuating element, wherein a first conductive rod and a second conductive rod of the industrial socket are connected in the control circuit; and a main circuit formed by the industrial plug and the industrial socket being electrically connected; wherein the control circuit is configured such that: when the industrial plug is inserted into the industrial socket, the triggering structure pushes the first conductive rod to contact the second conductive rod and controls the switch actuating element to connect the power supply to the industrial socket; and when the industrial plug is pulled out, the first conductive rod separates from the second conductive rod and controls the switch actuating element to cut off the power supply to the industrial socket.

[0013] Preferably, during the insertion stage of the industrial plug and the industrial socket, when the prongs and the socket make initial contact, there is a physical gap between the relative contact surfaces of the first conductive rod and the second conductive rod in the insertion / removal axis.

[0014] Preferably, the triggering structure is a pressure rod arranged along the insertion direction of the industrial plug.

[0015] The positive effects of this invention are as follows: The optimized structural design integrates a power on / off control unit within the socket. This structure controls the on / off state of a control circuit independent of the main circuit through the physical insertion and removal of the industrial plug. The control circuit is only activated when the industrial plug is inserted into the industrial socket, thus supplying power to the industrial socket and controlling the main circuit. This eliminates the risk of electric shock caused by exposed, live socket sleeves. Furthermore, since the industrial plug is only energized after insertion and de-energized before removal, the insertion and removal processes are completed while the socket sleeves are de-energized. This completely eliminates arcing caused by live connection or disconnection during insertion and removal, significantly improving operational safety and product reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the industrial socket in this invention.

[0018] Figure 2 This is a side view of the industrial socket in this invention.

[0019] Figure 3 For along Figure 2 A sectional view cut along line AA.

[0020] Figure 4 This is a schematic diagram of the on / off control unit in this invention.

[0021] Figure 5 This is an exploded view of the on / off control unit in this invention.

[0022] Figure 6 This is a schematic diagram of the structure of the industrial plug in this invention.

[0023] Figure 7 This is a schematic diagram of the industrial plug and socket system of the present invention.

[0024] The reference numerals in the figure are as follows: 1. Industrial socket; 10. Socket body; 101. Socket sleeve; 11. Mounting hole; 2. On / off control unit; 21. First conductive rod; 211. First wiring part; 22. First spring; 23. Second conductive rod; 231. Second wiring part; 24. Second spring; 25. Insulating top rod; 26. Insulating guide sleeve; 261. Guide hole; 27. Wiring hole; 28. Threaded hole; 29. ​​Wire clamping bolt; 3. Industrial plug; 31. Plug; 32. Contact rod; 4. Control circuit; 41. Switch actuator. Detailed Implementation

[0025] 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.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0027] The industrial socket structure in this embodiment of the invention is as follows: Figures 1 to 5 As shown, it includes a socket body 10, within which a socket sleeve 101 is provided for engaging with the prongs of an industrial plug 3. The socket body 10 has a mounting hole 11, within which a switching control unit 2 is disposed. The switching control unit 2 includes a first conductive rod 21, a first spring 22, and a second conductive rod 23 arranged axially along the mounting hole 11. The first spring 22 is disposed between the first conductive rod 21 and the second conductive rod 23, providing a spring force for separation between them. In normal operation (i.e., when the industrial plug 3 is not inserted into the industrial socket 1), the first spring 22 keeps the first conductive rod 21 and the second conductive rod 23 separated. The first conductive rod 21 and the second conductive rod 23 are respectively connected to external control loops. The circuit 4 (control circuit 4 is used to control the connection and disconnection of power supply to industrial socket 1) has a first wiring portion 211 and a second wiring portion 231; the first conductive rod 21 and the second conductive rod 23 are configured to overcome the elastic force of the first spring 22 and form electrical contact under the drive of the insertion action of industrial plug 3; in this embodiment, by integrating the on / off control unit 2 in the socket body 10, this structure controls the on / off of a control circuit 4 independent of the main circuit through the physical insertion and removal action of industrial plug 3. Only when industrial plug 3 is inserted into industrial socket 1 can control circuit 4 be connected, so that industrial socket 1 is powered, and thus the main circuit can be powered on, eliminating the risk of electric shock caused by exposed live socket on industrial socket 1 and improving safety. In actual operation, a trigger structure (such as a touch rod 32) is provided on industrial plug 3. When industrial plug 3 is inserted into industrial socket 1, the on / off control unit 2 is pressed by the trigger structure.

[0028] As a further optimization, a second spring 24 is also provided in the mounting hole 11. The second spring 24 acts on the end of the second conductive rod 23 facing away from the first spring 22, providing elastic support and restoring force for the second conductive rod 23. The elastic coefficient of the second spring 24 is greater than that of the first spring 22 (this stiffness relationship can be achieved by setting the spring wire diameter of the second spring 24 to be greater than that of the spring wire diameter of the first spring 22; or it can be achieved by selecting spring materials with different stiffnesses). With this structure, when the industrial plug 3 is inserted, its thrust will first overcome the elastic force of the first spring 22, so that the first and second conductive rods 23 can make stable contact with sufficient pressure. As the industrial plug 3 continues to be inserted, the first conductive rod 21 and the second conductive rod 23 remain in contact and begin to move inward together against the elastic force of the second spring 24, thereby ensuring the reliability of electrical contact. At the same time, the second spring 24 also provides buffering and stroke compensation, making the action smoother and more durable, and able to adapt to certain insertion and extraction force fluctuations and manufacturing tolerances.

[0029] See Figures 3 to 5 The on / off control unit 2 further includes an insulating top rod 25 movably disposed within the mounting hole 11. A stop is provided within the mounting hole 11 to limit and stop the insulating top rod 25, preventing it from slipping outward. The inner end of the insulating top rod 25 abuts against the first conductive rod 21, used to transmit external thrust to the first conductive rod 21. The insulating top rod 25 directly bears the thrust from the industrial plug, and while performing the force transmission function, it also constructs an electrical isolation barrier. Even if an internal insulation failure occurs, it can effectively block the abnormal current from being conducted to the outside, thus improving the electrical safety of the product.

[0030] Continue reading Figures 3 to 5 The on / off control unit 2 further includes an insulating guide sleeve 26, which is disposed within the mounting hole 11 and between the first spring 22 and the second conductive rod 23. The insulating guide sleeve 26 has a guide hole 261 through which one end of the first conductive rod 21 passes. By adding the insulating guide sleeve 26, the movement of the first conductive rod 21 is provided with precise guidance and limitation, preventing it from deviating or getting stuck during movement. At the same time, the insulating guide sleeve 26 also physically separates the first spring 22 and the second conductive rod 23, playing an insulating isolation role, further improving electrical safety and reliability.

[0031] See Figure 3 and Figure 5As shown, the first wiring portion 211 includes a wiring hole 27 disposed on the first conductive rod 21, a threaded hole 28 communicating with the wiring hole 27, and a wire clamping bolt 29 screwed into the threaded hole 28. During wiring, the end of the control circuit wire is inserted into the wiring hole 27, and then the wire clamping bolt 29 is tightened to clamp and fix the wire. This wiring method provides a firm connection, is easy to operate, and ensures the reliability of the wire connection. Preferably, the threaded hole 28 is disposed on the first conductive rod 21 at the end away from the second conductive rod 23, and is arranged along the axial direction of the first conductive rod 21, with the wiring hole 27 disposed on the side wall of the first conductive rod 21. The second wiring portion 231 can adopt the same structure as the first wiring portion 211 and is disposed on the second conductive rod 23 at the end away from the first conductive rod 21.

[0032] Furthermore, a wire-passing hole (not shown in the figure) is provided on the side wall of the mounting hole 11. The wire-passing hole is a strip-shaped hole extending along the axial direction of the mounting hole 11. This structural design provides sufficient lead-out and movement space for the wires connecting the first conductive rod 21 and the second conductive rod 23. It can effectively avoid interference or obstruction of the normal operation of the wires due to insufficient space during the reciprocating motion of the first conductive rod 21 and the second conductive rod 23, thereby ensuring the smoothness and reliability of the operation of the on / off control unit 2.

[0033] Secondly, the structure of the industrial plug and socket system of the present invention is shown in the following figure. Figure 6 and Figure 7As shown, the system includes an industrial plug 3, an industrial socket 1, a control circuit 4, and a main circuit. The industrial plug 3 has pins 31 and a trigger structure for driving. The industrial socket 1 is the industrial socket 1 described in the above embodiment. The control circuit 4 includes a switch actuator 41. The first conductive rod 21 and the second conductive rod 23 of the industrial socket 1 are connected in the control circuit 4. The main circuit is formed by the electrical connection between the industrial plug 3 and the industrial socket 1. The control circuit 4 is configured such that when the industrial plug 3 is inserted into the industrial socket 1, the trigger structure pushes the first conductive rod 21 to contact the second conductive rod 23 and controls the switch actuator 41 to connect the power supply to the industrial socket 1. When the industrial plug 3 is pulled out, the first conductive rod 21 and the second conductive rod 23 are connected in the control circuit 4. One conductive rod 21 separates from the second conductive rod 23 and controls the switch actuator 41 to cut off the power supply to the industrial socket 1. In this embodiment, the industrial plug and socket system integrates the industrial socket 1, the industrial plug 3, the control circuit 4, and the main circuit into a complete electrical system. The main circuit can only be energized after the industrial plug 3 and the industrial socket 1 reach a reliable mechanical engagement state to supply power to the industrial socket 1. Moreover, after the industrial plug 3 is pulled out, the main circuit is cut off (the industrial socket 1 is not energized). This design, through the control logic of "plug engagement completed → control circuit triggered → socket powered (main circuit connected)," ensures that the power supply port of the industrial socket 1 is not energized in the idle state, thus preventing electric shock accidents caused by accidental contact with the exposed socket and achieving a safety protection effect.

[0034] As a further optimized implementation, during the insertion stage of the industrial plug 3 and the industrial socket 1, when the pin 31 and the socket 101 make initial contact, there is a physical gap between the relative contact surfaces of the first conductive rod 21 and the second conductive rod 23 in the insertion / removal axis; that is, during the insertion process of the industrial plug 3 and the industrial socket 1, when the pin 31 and the socket 101 just make contact, the first conductive rod 21 and the second conductive rod 23 have not yet made contact. Only as the industrial plug 3 continues to be inserted will the first conductive rod 21 and the second conductive rod 23 make contact and conduct electricity (at which point the industrial socket...). 1. Power supply is connected and the main circuit is connected; Correspondingly, during the unplugging process of the industrial plug 3, the first conductive rod 21 and the second conductive rod 23 are separated and disconnected first, cutting off the power supply to the industrial socket 1 (the main circuit is disconnected), and then the plug pin 31 is disconnected from the socket 101. This timing setting of "connect first, then power on; disconnect first, then separate" fundamentally ensures that the on and off operation of the main circuit is always completed in the state where the socket 101 is not energized, thereby completely eliminating the phenomenon of arcing caused by energized connection or disconnection during plugging and unplugging, and significantly improving the safety of operation and the reliability of the product.

[0035] The triggering structure is further configured as a pressure rod 32 arranged along the insertion direction of the industrial plug 3. When the industrial plug 3 is inserted into the industrial socket 1, the pressure rod 32 is inserted through the outer port of the mounting hole 11 and the force is directly or indirectly transmitted to the first conductive rod 31, thereby causing the first conductive rod 31 and the second conductive rod 33 to move relative to each other and make contact and conduction.

[0036] For example, the control signal input terminal of the switch actuator 41 is electrically connected to the first conductive rod 21 (specifically connected to the first wiring portion 211) and the second conductive rod 23 (specifically connected to the second wiring portion 231); the controlled output terminal of the switch actuator 41 is connected in series in the power supply line of the industrial socket 1; the switch actuator 41 is a contactor. In another embodiment, the switch actuator 41 is a circuit composed of an intermediate relay and an AC contactor; in yet another embodiment, the switch actuator 41 is a solid-state relay.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An industrial socket, comprising a socket body (10) having a socket sleeve (101); characterized in that, The socket body (10) is provided with a mounting hole (11), and a switch control unit (2) is provided in the mounting hole (11); The on / off control unit (2) includes a first conductive rod (21), a first spring (22), and a second conductive rod (23) arranged axially along the mounting hole (11); under normal conditions, the first spring (22) keeps the first conductive rod (21) and the second conductive rod (23) separated; the first conductive rod (21) and the second conductive rod (23) are respectively connected to a first wiring portion (211) and a second wiring portion (231) for an external control circuit (4); The first conductive rod (21) and the second conductive rod (23) are configured to overcome the elastic force of the first spring (22) and form an electrical contact under the drive of the insertion action of the industrial plug (3).

2. The industrial socket according to claim 1, characterized in that, A second spring (24) is also provided in the mounting hole (11). The second spring (24) acts on the end of the second conductive rod (23) that is away from the first spring (22). The elastic coefficient of the second spring (24) is greater than that of the first spring (22).

3. The industrial socket according to claim 2, characterized in that: The diameter of the spring wire of the second spring (24) is greater than the diameter of the spring wire of the first spring (22).

4. The industrial socket according to claim 1, characterized in that, The on / off control unit (2) further includes an insulating top rod (25) movably disposed in the mounting hole (11), the inner end of the insulating top rod (25) abutting against the first conductive rod (21) for transmitting external thrust to the first conductive rod (21).

5. The industrial socket according to claim 1, characterized in that, The on / off control unit (2) further includes an insulating guide sleeve (26), which is disposed in the mounting hole (11) and located between the first spring (22) and the second conductive rod (23). The insulating guide sleeve (26) is provided with a guide hole (261) through which one end of the first conductive rod (21) passes.

6. The industrial socket according to claim 1, characterized in that, The first wiring portion (211) and / or the second wiring portion (231) includes a wiring hole (27) disposed on the first conductive rod (21) and / or the second conductive rod (23), a threaded hole (28) communicating with the wiring hole (27), and a wire clamping bolt (29) screwed into the threaded hole (28).

7. The industrial socket according to claim 1, characterized in that, A wire-passing hole is provided on the side wall of the mounting hole (11), and the wire-passing hole is a strip-shaped hole extending along the axial direction of the mounting hole (11).

8. An industrial plug and socket system, characterized in that, include: An industrial plug (3) having pins (31) and a trigger structure for driving; The industrial socket (1) according to any one of claims 1 to 7; The control circuit (4) includes a switch actuator (41), and the first conductive rod (21) and the second conductive rod (23) of the industrial socket (1) are connected in the control circuit (4); The main circuit is formed by the electrical connection of the industrial plug (3) and the industrial socket (1); The control circuit (4) is configured such that when the industrial plug (3) is inserted into the industrial socket (1), the triggering structure pushes the first conductive rod (21) to contact the second conductive rod (23) and controls the switch actuator (41) to connect the power supply to the industrial socket (1); and when the industrial plug (3) is pulled out, the first conductive rod (21) separates from the second conductive rod (23) and controls the switch actuator (41) to cut off the power supply to the industrial socket (1).

9. The industrial plug and socket system according to claim 8, characterized in that, During the insertion stage of the industrial plug (3) and the industrial socket (1), when the plug (31) and the socket (101) make initial contact, there is a physical gap between the relative contact surfaces of the first conductive rod (21) and the second conductive rod (23) in the insertion and removal axis.

10. The industrial plug and socket system according to claim 8, characterized in that, The triggering structure is a pressure rod (32) arranged along the insertion direction of the industrial plug (3).

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