A rail terminal

Abstract

The utility model discloses a guide rail formula wiring terminal relates to connector technical field, solved the technical problem that current technical scheme can not quick automatic completion connects and disconnects, including the shell, the shell is provided with the guide rail, the terminal body is slidably installed on the guide rail, the shell one end is provided with the input cable, the shell other end is provided with the output cable, the terminal body is connected in the output through the flexible wire, be provided with adsorption structure on the input cable, the shell is provided with the connecting structure, the shell is provided with reset structure, the utility model discloses the connecting structure that is composed of pneumatic cylinder etc and reset structure that is composed of reset tension spring, cooperate external control system, can realize the automatic advance connection and automatic rollback disconnect of terminal body. The whole process does not need manual intervention, and the response speed is fast, and the wiring operation time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, specifically a rail-mounted terminal block. Background Technology

[0002] This utility model relates to the technical field of terminal blocks, which, as a fundamental component in electrical connections, are widely used in numerous fields such as industrial automation, power equipment, machinery manufacturing, and rail transportation. Their core function is to achieve safe and reliable connections between wires. Existing rail-mounted terminal blocks mostly employ manual connection methods such as screw fastening, spring clip crimping, or direct insertion. These traditional connection methods have the following shortcomings: In situations requiring frequent connection and disconnection, such as equipment debugging, production line changeovers, and modular testing, manually inserting and removing screws or tightening / loosening them with tools is extremely time-consuming and labor-intensive, severely impacting work efficiency. Traditional terminal blocks rely on manual operation, making them difficult to integrate into automated control systems and unable to achieve remote control or programmed automatic connection / disconnection, limiting their application in highly automated and intelligent equipment. During manual operation, the tightening torque of the screws, the force and angle of insertion and removal vary from person to person, potentially leading to poor contact, intermittent connections, or damage to the terminals due to excessive force, making it difficult to guarantee the stability and consistency of the connection. Manual insertion and removal in high-voltage or high-current environments pose certain safety risks, such as electric arcing and electric shock.

[0003] In summary, existing technical solutions have the problem of not being able to quickly and automatically complete connection and disconnection. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rail-mounted terminal block, which solves the technical problem that existing solutions cannot quickly and automatically complete connection and disconnection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rail-mounted terminal block includes a housing with a guide rail inside. A terminal block is slidably mounted on the guide rail. An input cable is located at one end of the housing, and an output cable is located at the other end. The terminal block is connected to the output end via a flexible wire. An adsorption structure is provided on the input cable. A connection structure and a reset structure are provided within the housing. By providing a guide rail within the housing and allowing the terminal block to slide on it, linearization and precise guidance of the connection action are achieved. The adsorption structure on the input cable is used to capture and position the terminal block, while the connection structure provides power to drive the terminal block to move along the guide rail, ultimately achieving a reliable electrical connection with the input cable. The reset structure allows the terminal block to automatically return to its initial disconnected position when disconnection is required. The flexible wire ensures a stable electrical connection between the terminal block and the output cable during movement.

[0006] Preferably, limit blocks are provided at both ends of the guide rail, and a supporting guide wheel is provided on the terminal body. The terminal body is installed in the guide rail via the guide wheel, and the axis of the terminal body coincides with that of the outer shell. The supporting guide wheel on the terminal body cooperates with the guide rail to change sliding friction into rolling friction, which greatly reduces the resistance when the terminal body moves, making the connection and reset process smoother and less labor-intensive, reducing mechanical wear, and extending service life. The limit blocks prevent the terminal body from moving excessively and dislodging from the guide rail or impacting the inside of the outer shell, ensuring the safety and stability of the entire device operation.

[0007] Preferably, an insulating ring is provided on the inner wall of the outer casing, and a protective paint coating is provided on the outer casing. Protective sleeves are connected to the outer casing and the input and output cables respectively. The insulating ring on the inner wall of the outer casing effectively isolates the internal conductive components from the outer casing, preventing leakage or short circuit risks caused by accidental contact and improving operational safety. The protective paint coating on the outer casing not only provides corrosion and rust prevention but also offers additional insulation protection, adapting to harsher industrial environments. Protective sleeves at the connections of the input and output cables to the outer casing effectively protect the cable roots, preventing damage or breakage due to bending or pulling. They also provide sealing against dust and water, further enhancing the product's durability and reliability.

[0008] Preferably, the connection structure includes a pneumatic cylinder, which is fixedly installed inside the housing. The pneumatic cylinder has a pusher head at its telescopic end, which is located at one end of the terminal body. Using a pneumatic cylinder as the connection structure allows for precise, rapid, and powerful linear pushing of the terminal body via an external air source. When connection is required, the pneumatic cylinder extends with air, and the pusher head at its telescopic end pushes the terminal body along the guide rail until it reliably contacts the terminal of the input cable. Pneumatic drive offers advantages such as fast response, stable and adjustable thrust, simple structure, and ease of integration into automated control systems.

[0009] Preferably, the adsorption structure includes an electromagnet disposed on the input cable. The electromagnet adsorbs one end of the terminal body, and the input cable end is provided with a pair of swing rods, each with an auxiliary wheel. One end of the terminal body is provided with a frustum-shaped head. As an adsorption structure, the electromagnet generates magnetic force when energized, which can attract and fix the metal terminal body to the port of the input cable, ensuring the tightness and stability of the electrical connection. The frustum-shaped head at the front end of the terminal body serves a guiding function; when the terminal body approaches the input cable, even with slight positional deviations, the sloping surface of the frustum can guide it to align smoothly with the center. When the frustum-shaped head contacts the auxiliary wheel, the swing rod can swing slightly, flexibly correcting the terminal body to the centered position.

[0010] Preferably, the reset structure includes a reset spring connected to one end of the terminal body and one end of the housing; one end of the reset spring is connected to the terminal body, and the other end is fixed inside the housing. During the connection process, when the connection structure pushes the terminal body forward, the reset spring is stretched and stores elastic energy. When the connection is completed and the circuit needs to be disconnected, the driving force of the connection structure is removed, and the elastic energy stored in the reset spring is released, quickly and reliably pulling the terminal body back to its initial disconnected position. This purely mechanical reset method is simple in structure, low in cost, and has a rapid response, requiring no additional energy, ensuring that the device can safely return to the disconnected state even in abnormal situations such as power outages or gas outages.

[0011] Preferably, a fuse is housed within the terminal body; integrating the fuse directly into the terminal body, which serves as the core conductive element, results in a compact structure and saves space for external fuse installation. When an excessive current occurs in the circuit, the fuse inside the terminal body will quickly melt, thereby cutting off the current path, effectively protecting downstream connected equipment and lines from damage, and preventing safety accidents such as fires caused by overheating.

[0012] Beneficial effects This invention provides a guide rail type terminal block. By incorporating a connection structure consisting of a pneumatic cylinder and a reset structure consisting of a return spring, and in conjunction with an external control system, it enables automatic forward connection and automatic retraction disconnection of the terminal block. The entire process requires no manual intervention, has a fast response speed, and significantly shortens wiring operation time. It is particularly suitable for automated test benches and production lines requiring high-frequency on / off control, resulting in a significant improvement in production efficiency. By incorporating guide rails within the housing and supporting guide wheels on the terminal block, the stability and accuracy of the terminal block during movement are ensured. Utilizing the attraction of an electromagnet and the guiding design of a frustum-shaped head, precise alignment and tight locking between the terminal block and the input cable are achieved, ensuring low contact resistance and high stability of the electrical connection, effectively avoiding loosening or poor connection problems caused by vibration or impact. The connection and disconnection actions of this invention are driven by standard pneumatic and electric components, resulting in simple control signals. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a guide rail type terminal block according to the present invention.

[0014] In the diagram: 1. Outer casing; 2. Guide rail; 3. Terminal body; 4. Input cable; 6. Output cable; 7. Limit block; 8. Supporting guide wheel; 9. Insulating ring; 10. Protective sleeve; 11. Pneumatic cylinder; 12. Electromagnet; 13. Swing rod; 14. Auxiliary wheel; 15. Fuse; 16. Reset spring; Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Detailed description follows.

[0016] Please see Figure 1 This utility model provides a technical solution: a guide rail type terminal block, including a housing 1, a guide rail 2 inside the housing 1, a terminal block 3 slidably mounted on the guide rail 2, an input cable 4 at one end of the housing 1, and an output cable 6 at the other end of the housing 1. The terminal block 3 is connected to the output end via a flexible wire. An adsorption structure is provided on the input cable 4. A connection structure and a reset structure are provided inside the housing 1. By providing a guide rail 2 inside the housing 1 and allowing the terminal block 3 to slide on it, linearization and precise guidance of the connection action are achieved. The adsorption structure on the input cable 4 is used to capture and position the terminal block 3, while the connection structure provides power to drive the terminal block 3 to move along the guide rail 2, ultimately achieving a reliable electrical connection with the input cable 4. The reset structure allows the terminal block 3 to automatically return to its initial disconnected position when disconnection is required. The flexible wire ensures that the terminal block 3 maintains a stable electrical connection with the output cable 6 during movement.

[0017] In this embodiment, the guide rail 2 is further configured with limit blocks 7 at both ends, and the terminal body 3 is provided with supporting guide wheels 8. The terminal body 3 is installed inside the guide rail 2 via the guide wheels, and the axis of the terminal body 3 coincides with that of the outer shell 1. The supporting guide wheels 8 on the terminal body 3 cooperate with the guide rail 2 to change sliding friction into rolling friction, which greatly reduces the resistance when the terminal body 3 moves, making the connection and reset process smoother and less labor-intensive, reducing mechanical wear, and extending service life. The limit blocks 7 prevent the terminal body 3 from moving excessively and dislodging from the guide rail or impacting the inside of the outer shell 1, ensuring the safety and stability of the entire device operation.

[0018] In this embodiment, an insulating ring 9 is provided on the inner wall of the outer casing 1, and a protective paint coating is provided on the outer surface of the outer casing 1. Protective sleeves 10 are connected to the outer casing 1 and the input cable 4 and output cable 6 respectively. The insulating ring 9 on the inner wall of the outer casing 1 effectively isolates the internal conductive components from the outer casing 1, preventing leakage or short circuit risks caused by accidental contact and improving operational safety. The protective paint coating on the outer surface of the outer casing 1 not only provides corrosion and rust prevention but also offers additional insulation protection, adapting to harsher industrial environments. The protective sleeves 10 at the connection points of the input cable 4 and output cable 6 with the outer casing 1 effectively protect the cable roots, preventing damage or breakage caused by bending or pulling. They also provide sealing against dust and water, further enhancing the product's durability and reliability.

[0019] In this embodiment, the connection structure includes a pneumatic cylinder 11, which is fixedly installed inside the outer casing 1. The telescopic end of the pneumatic cylinder 11 is equipped with a pusher head, which is located at one end of the terminal body 3. Using the pneumatic cylinder 11 as the connection structure allows for precise, rapid, and powerful linear pushing of the terminal body 3 via an external air source. When connection is required, the pneumatic cylinder 11 extends with air, and the pusher head at its telescopic end pushes the terminal body 3 forward along the guide rail 2 until it reliably contacts the terminal of the input cable 4. Pneumatic drive has the advantages of fast response speed, stable and adjustable thrust, simple structure, and easy integration into an automated control system.

[0020] In this embodiment, the adsorption structure includes an electromagnet 12, which is mounted on the input cable 4. The electromagnet 12 adsorbs one end of the terminal body 3. A pair of swing rods 13 are provided at the end of the input cable 4, and an auxiliary wheel 14 is provided on each swing rod 13. A frustum-shaped head is provided at one end of the terminal body 3. The electromagnet 12, as the adsorption structure, generates magnetic force after being energized, which can attract and fix the metal terminal body 3 to the port of the input cable 4, ensuring the tightness and stability of the electrical connection. The frustum-shaped head at the front end of the terminal body 3 serves a guiding function. When the terminal body 3 approaches the input cable 4, even with a slight positional deviation, the sloping surface of the frustum can guide it to align smoothly with the center. When the frustum-shaped head contacts the auxiliary wheel 14, the swing rod 13 can swing slightly, flexibly correcting the terminal body 3 to the centered position.

[0021] In this embodiment, the reset structure includes a reset spring 16, which is connected to one end of the terminal body 3 and one end inside the outer shell 1. One end of the reset spring 16 is connected to the terminal body 3, and the other end is fixed inside the outer shell 1. During the connection process, when the connection structure pushes the terminal body 3 forward, the reset spring 16 is stretched and stores elastic energy. When the connection action is completed and the circuit needs to be disconnected, the driving force of the connection structure is removed, and the elastic energy stored in the reset spring 16 is released, quickly and reliably pulling the terminal body 3 back to the initial disconnected position. This purely mechanical reset method is simple in structure, low in cost, and has a rapid response. It requires no additional energy and ensures that the device can safely return to the disconnected state even in abnormal situations such as power outages or gas outages.

[0022] In this embodiment, a fuse 15 is further provided inside the terminal body 3. Integrating the fuse 15 directly into the terminal body 3, which is the core conductive element, results in a compact structure and saves space for external fuse installation. When an excessive current occurs in the circuit, the fuse 15 inside the terminal body 3 will quickly melt, thereby cutting off the current path and effectively protecting the connected equipment and lines from damage, and preventing safety accidents such as fires caused by overheating.

[0023] Its detailed connection methods are well-known technologies in this field; such as Figure 1 As shown, in the initial state, this terminal block is in the open position. The pneumatic cylinder 11 of the connection structure is in a non-operating retracted state. Under the pulling force of the reset structure, the terminal body 3 is located at the end of the guide rail 2 closer to the output cable 6 and away from the input cable 4, and the circuit is in the open state. The adsorption structure is not energized and does not generate magnetic force.

[0024] Install the rail-mounted terminal block in the designated position, and properly connect the input cable 4 and output cable 6 to the power supply and load terminals of the external circuit, respectively. At this time, the terminal body 3 is inside the guide rail 2, and its frustum-shaped head at the front end maintains a certain distance from the port of the input cable 4.

[0025] When the external control system issues a connection command, this device begins the connection process: the control system first provides working air pressure to the pneumatic cylinder 11 of the connection structure. Upon receiving the signal, the pneumatic cylinder 11 extends its telescopic end, pushing the push plate head, which in turn pushes the terminal body 3 against the tension of the return spring 16, allowing it to slide smoothly along the guide rail 2 inside the outer casing towards the input cable 4. The support guide wheel 8 on the terminal body 3 rolls within the guide rail 2, ensuring low resistance and high smoothness during movement. As the terminal body 3 approaches the input cable 4, its frustum-shaped head first contacts the auxiliary wheels 14 on a pair of swing rods 13 at the end of the input cable 4. Even if there is a slight positional deviation in the terminal body 3 during sliding, the conical surface of the frustum-shaped head and the rolling action of the auxiliary wheels 14 provide automatic correction and centering, guiding the terminal body 3 precisely to the connection port of the input cable 4. At the instant or simultaneously with the terminal body 3 about to contact the port of the input cable 4, the control system energizes the adsorption structure on the input cable 4. Electromagnet 12 generates a strong magnetic force, firmly attracting terminal body 3 to the connection port of input cable 4. This attraction ensures a tight, stable, and low-contact-resistance electrical connection between the two, completing the physical conduction of the circuit. Pneumatic cylinder 11 can maintain pressure as needed to provide a continuous pushing force, or release the pressure after electromagnet 12 attracts the terminal body.

[0026] After connection, current flows from input cable 4 through the contact surface into terminal body 3, passes through fuse 15 inside terminal body 3, and then flows through flexible wire to output cable 6, and the entire circuit enters normal operating state. During this period, if an overload or short circuit occurs in the circuit, fuse 15 inside terminal body 3 will immediately melt and disconnect the circuit, thereby protecting the safety of subsequent equipment and systems.

[0027] When the external control system issues a disconnect command, this device performs a disconnection action: the control system first cuts off the power to the adsorption structure, causing its magnetic force to disappear and releasing its adsorption on terminal body 3. The control system then cancels the working air pressure of the connecting structure pneumatic cylinder 11, causing its driving force to disappear and allowing it to retract freely. After both the driving force and the adsorption force disappear, the elastic energy stored in the stretched reset spring 16 is immediately released. The reset spring 16 generates a pull force, quickly pulling terminal body 3 back to its initial disconnected position along the guide rail 2. Terminal body 3 is disconnected from the input cable 4, the circuit is physically disconnected, and one complete working cycle is completed. The entire device returns to its initial state, awaiting the next connection command.

[0028] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A rail-mounted terminal block, comprising a housing (1), characterized in that, The outer shell (1) is provided with a guide rail (2), and a terminal body (3) is slidably installed on the guide rail (2). An input cable (4) is provided at one end of the outer shell (1), and an output cable (6) is provided at the other end of the outer shell (1). The terminal body (3) is connected to the output end through a flexible wire. An adsorption structure is provided on the input cable (4). A connection structure is provided inside the outer shell (1), and a reset structure is provided inside the outer shell (1).

2. The guide rail type terminal block according to claim 1, characterized in that, Limiting blocks (7) are provided at both ends of the guide rail (2), and a supporting guide wheel (8) is provided on the terminal body (3). The terminal body (3) is installed in the guide rail (2) through the guide wheel, and the axis of the terminal body (3) coincides with that of the outer shell (1).

3. A rail-mounted terminal block according to claim 1, characterized in that, An insulating ring (9) is provided on the inner wall of the outer shell (1), and a protective paint surface is provided on the outer shell (1). The outer shell (1) is connected to the input cable (4) and the output cable (6) respectively by protective sleeves (10).

4. A rail-mounted terminal block according to claim 1, characterized in that, The connection structure includes a pneumatic cylinder (11), which is fixedly installed inside the outer shell (1). The telescopic end of the pneumatic cylinder (11) is provided with a push plate head, which is located at one end of the terminal body (3).

5. A rail-mounted terminal block according to claim 1, characterized in that, The adsorption structure includes an electromagnet (12), which is disposed on the input cable (4). The electromagnet (12) adsorbs one end of the terminal body (3). A pair of swing rods (13) are disposed at the end of the input cable (4). An auxiliary wheel (14) is disposed on the swing rods (13). A frustum-shaped head is disposed at one end of the terminal body (3).

6. A rail-mounted terminal block according to claim 1, characterized in that, The reset structure includes a reset spring (16), which is connected to one end of the terminal body (3) and one end inside the outer shell (1).

7. A rail-mounted terminal block according to claim 1, characterized in that, A fuse (15) is provided inside the terminal body (3).

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