A terminal guard

Abstract

The utility model discloses a kind of wiring terminal protection devices, including wiring terminal body, still include: dustproof mechanism: the dustproof mechanism includes the fixed cavity being opened in the wiring terminal body inside, the inside of the wiring terminal body is provided with fixed frame, the fixed frame is fixed in the inner wall of the fixed cavity, the bottom outer wall of the fixed frame is connected with connecting rod, the bottom outer wall of the connecting rod is connected with connecting barrel, the inner wall of the connecting barrel is connected with spring, the end of the spring away from the connecting rod is connected with fixed rod, the outer diameter of the fixed rod and the inner diameter of the connecting barrel are matched. The wiring terminal protection device disclosed in the utility model has the effect that when slight vibration is generated during equipment operation, vibration can overcome the elasticity of spring, so that the baffle temporarily leaves the bottom aperture, so that dust is discharged from the aperture, thereby avoiding dust accumulation inside the wiring terminal.

Description

Technical Field

[0001] This utility model relates to the field of electrical protection technology, and in particular to a terminal protection device. Background Technology

[0002] In fields such as industrial control, power distribution, and electronic equipment, terminal blocks are core components for achieving reliable connections between wires and circuits, and their operational stability directly affects the safety and efficiency of the entire electrical system.

[0003] However, traditional terminal protection devices cannot effectively clean up dust that has seeped into the terminal, causing the dust to accumulate in the dead corners of the terminal cavity for a long time. As the usage time increases, the accumulated dust will gradually cover the contact surface of the metal conductive parts, increasing the resistance of current transmission and causing poor contact inside the terminal. For example, in a machining workshop, due to the large amount of dust particles such as metal shavings and grinding shavings, some tiny dust particles can seep into the rectangular cavity inside the terminal through the sealing gap between the cover plate and the terminal body, and the cable inlet. Since the bottom of the rectangular cavity is a flat structure and there is no dedicated dust discharge channel, the infiltrated dust will accumulate at the bottom of the cavity. After a period of use, a layer of dust will cover the surface of the metal terminal inside the terminal, causing current fluctuations and terminal overheating when the motor starts. Utility Model Content

[0004] This utility model discloses a terminal protection device, which aims to solve the technical problem that traditional terminal protection devices cannot effectively clean up the small amount of dust that has penetrated into the terminal, resulting in the dust accumulating in the dead corners of the terminal cavity for a long time. As the usage time increases, the accumulated dust will gradually cover the contact surface of the metal conductive parts, increasing the resistance of current transmission and causing poor contact inside the terminal.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A terminal block protection device includes a terminal block body and further includes: a dustproof mechanism: the dustproof mechanism includes a fixed cavity formed inside the terminal block body, a fixed frame is provided inside the terminal block body, the fixed frame is fixed to the inner wall of the fixed cavity, a connecting rod is connected to the bottom outer wall of the fixed frame, a connecting cylinder is connected to the bottom outer wall of the connecting rod, a spring is connected to the inner wall of the connecting cylinder, a fixed rod is connected to the end of the spring away from the connecting rod, the outer diameter of the fixed rod matches the inner diameter of the connecting cylinder, and a stop is connected to the bottom outer wall of the fixed rod; and an observation mechanism: the observation mechanism is located on one side of the outer wall of the terminal block body.

[0006] By adopting the above technical solution, the dustproof mechanism includes a fixed cavity opened inside the terminal block body. The fixed cavity provides space for the internal components. At this time, the connecting rod connected to the bottom outer wall is fixed inside the fixed cavity by a fixed frame fixed to the inner wall of the fixed cavity. The connecting rod is used to connect the fixed frame and the connecting cylinder. The connecting cylinder provides a mounting cavity for the spring inside. At this time, the spring generates a restoring force through its own elastic deformation, which drives the fixed rod and the stop block connected to the bottom of the fixed rod to move. The stop block is used to block the opening at the bottom of the fixed cavity and prevent external dust from entering.

[0007] As a further embodiment of this utility model: the observation mechanism includes a transparent glass cover plate connected to the outer wall of one side of the terminal block body, four connecting blocks are fixed to the outer wall of one side of the transparent glass cover plate, a sealing ring is connected to the outer wall of the transparent glass cover plate near the terminal block body, observation mirrors are connected to the outer walls of both sides of the transparent glass cover plate, a limiting groove is provided on the outer wall of one side of the transparent glass cover plate, and the sealing ring is connected to the inner wall of the limiting groove.

[0008] By adopting the above technical solution, the observation mechanism includes a transparent glass cover plate connected to the outer wall of one side of the terminal body. The transparent glass cover plate is used to cover one side opening of the terminal body to form a protective barrier. At this time, a sealing ring is connected to the outer wall of the transparent glass cover plate near the terminal body. The sealing ring is used to fill the gap between the transparent glass cover plate and the terminal body to prevent dust from entering. At this time, a limiting groove is provided on one side outer wall of the transparent glass cover plate. The limiting groove is used to provide an installation position for the sealing ring.

[0009] In summary, this application includes at least one of the following beneficial technical effects: 1. The fixed cavity has an inverted conical structure. A fixing frame is installed on the inner wall of the fixed cavity to support other components at its bottom. A stop block is engaged at the small opening at the bottom of the inverted conical inner cavity. The fixing rod connected to the top outer wall of the stop block is connected to a spring at one end of the inner wall of the connecting cylinder. A small amount of dust will naturally slide to the bottom of the fixed cavity under the action of gravity. When the equipment operates and generates slight vibration, the vibration will overcome the elasticity of the spring and cause the stop block to briefly move away from the bottom opening, so that the dust can be discharged from the opening and thus prevent dust from accumulating inside the wiring terminals. After the vibration stops, the stop block and the bottom opening of the fixed cavity are engaged to prevent external dust from entering in reverse.

[0010] 2. The transparent glass cover achieves external dust protection through the sealing ring. At the same time, the operator can directly observe the inside of the terminal body through the transparent glass cover. By setting an observation mirror with a convex structure on the outer wall of the sealing ring connected to one side of the transparent glass cover, it is easy to observe whether there are cracks or deformations in the sealing ring.

[0011] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a terminal protection device proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the dustproof mechanism of a terminal protection device proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the block structure of a terminal protection device proposed in this utility model.

[0015] Figure 4 This is a schematic diagram of the observation mechanism of a terminal protection device proposed in this utility model.

[0016] In the attached diagram: 1. Terminal block body; 2. Fixing bracket; 3. Connecting rod; 4. Connecting cylinder; 5. Stop block; 6. Fixing cavity; 7. Transparent glass cover; 8. Spring; 9. Fixing rod; 10. Observation mirror; 11. Limiting groove; 12. Sealing ring; 13. Connecting block; 14. Bolt. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 2 and Figure 3 A terminal protection device includes a terminal body 1 and further includes: a dustproof mechanism: the dustproof mechanism includes a fixed cavity 6 opened inside the terminal body 1, a fixed frame 2 is provided inside the terminal body 1, the fixed frame 2 is fixed to the inner wall of the fixed cavity 6, a connecting rod 3 is connected to the bottom outer wall of the fixed frame 2, a connecting cylinder 4 is connected to the bottom outer wall of the connecting rod 3, a spring 8 is connected to the inner wall of the connecting cylinder 4, a fixed rod 9 is connected to the end of the spring 8 away from the connecting rod 3, the outer diameter of the fixed rod 9 matches the inner diameter of the connecting cylinder 4, and a stop block 5 is connected to the bottom outer wall of the fixed rod 9; and an observation mechanism: the observation mechanism is located on one side of the outer wall of the terminal body 1.

[0019] Specifically, the dustproof mechanism includes a fixed cavity 6 inside the terminal block body 1. The fixed cavity 6 provides space for the internal components. At this time, the connecting rod 3 connected to the bottom outer wall of the fixed cavity 6 is fixed inside the fixed cavity 6 by the fixing frame 2 fixed to the inner wall of the fixed cavity 6. The connecting rod 3 is used to connect the fixing frame 2 and the connecting cylinder 4. The connecting cylinder 4 provides a mounting cavity for the spring 8 inside the fixed cavity 6. At this time, the spring 8 generates a restoring force through its own elastic deformation, which drives the fixed rod 9 and the stop block 5 connected to the bottom of the fixed rod 9 to move. The stop block 5 is used to block the opening at the bottom of the fixed cavity 6 to prevent external dust from entering.

[0020] The fixed cavity 6 has an inverted conical structure, which can guide the infiltrated dust to slide towards the bottom opening, reducing internal dust accumulation.

[0021] Specifically, the outer diameter of the stop 5 matches the opening at the bottom of the fixing cavity 6 to ensure that the stop 5 fits tightly with the opening and improves the sealing and dust prevention.

[0022] Reference Figure 1 and Figure 4 In a preferred embodiment, the observation mechanism includes a transparent glass cover 7 connected to one outer wall of the terminal block body 1. Four connecting blocks 13 are fixed to one outer wall of the transparent glass cover 7. A sealing ring 12 is connected to the outer wall of the transparent glass cover 7 near the terminal block body 1. Observation mirrors 10 are connected to the outer walls of both sides of the transparent glass cover 7. A limiting groove 11 is provided on one outer wall of the transparent glass cover 7. The sealing ring 12 is connected to the inner wall of the limiting groove 11.

[0023] Specifically, the observation mechanism includes a transparent glass cover 7 connected to the outer wall of one side of the terminal block body 1. The transparent glass cover 7 is used to cover one side opening of the terminal block body 1 to form a protective barrier. At this time, a sealing ring 12 is connected to the outer wall of the transparent glass cover 7 near the terminal block body 1. The sealing ring 12 is used to fill the gap between the transparent glass cover 7 and the terminal block body 1, thereby preventing dust from entering. At this time, a limiting groove 11 is provided on one side of the outer wall of the transparent glass cover 7. The limiting groove 11 is used to provide an installation position for the sealing ring 12.

[0024] Among them, two observation mirrors 10 are located on the outer walls of the sealing ring 12 on both sides. The outer wall of the two observation mirrors 10 away from the transparent glass cover plate 7 has a convex structure. The observation mirrors 10 with the convex structure are used to check whether the sealing ring 12 is intact, and the dustproof status can be checked without disassembly.

[0025] Specifically, four connecting blocks 13 are snapped onto the outer wall of one side of the same terminal body 1, thereby fixing the transparent glass cover 7 to the terminal body 1 through the snap-fit ​​method.

[0026] Reference Figure 1 and Figure 2 In a preferred embodiment, a bolt 14 is connected to the top outer wall of the terminal block body 1, and a limiting hole is provided on the top outer wall of the terminal block body 1. The bolt 14 and the limiting hole are connected by threads.

[0027] Specifically, the bolt 14 is used to fix the cable to the surface of the fixing bracket 2 inside the terminal block body 1. At this time, the bolt 14 is connected to the limiting hole on the top outer wall of the terminal block body 1 by thread, thereby realizing the precise adjustment of the tightness of the bolt 14 and ensuring a tight connection.

[0028] Working principle: During use, the fixing frame 2 fixed to the inner wall of the fixing cavity 6 supports the connecting cylinder 4 through the connecting rod 3, so that the entire dustproof mechanism is stably placed inside the fixing cavity 6. At this time, the outer diameter of the stop block 5 is precisely matched with the bottom opening hole of the fixing cavity 6, so that the stop block 5 fits tightly against the opening hole, forming a sealing barrier to prevent external dust from entering the terminal from the bottom opening. When a small amount of dust seeps into the fixing cavity 6, because the fixing cavity 6 is an inverted conical structure, its smooth inner wall will guide the dust to slide towards the bottom opening under the action of gravity, avoiding the accumulation of dust on the inner wall of the cavity. When the equipment operates and generates slight vibration, the vibration impact force will overcome the spring. The restoring force of spring 8 causes the fixing rod 9 to retract upward, causing the stop block 5 to briefly disengage from the bottom opening. At this time, the dust accumulated at the opening will be discharged from the opening with the vibration. After the vibration stops, spring 8 returns to its elastic deformation, pushing the fixing rod 9 and the stop block 5 to reset again, resealing the opening and preventing external dust from entering in reverse. Secondly, the transparent glass cover 7 itself has high light transmittance. Combined with the convex observation mirrors 10 on both sides, it can expand the field of view. Operators can directly check the dust accumulation inside the terminal and whether the sealing ring 12 is intact through the observation mirror 10 without disassembling the transparent glass cover 7. The dustproof status can be checked without disassembly.

[0029] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A terminal block protection device, comprising a terminal block body (1), characterized in that, Also includes: Dustproof mechanism: The dustproof mechanism includes a fixed cavity (6) opened inside the terminal body (1), a fixed frame (2) is provided inside the terminal body (1), the fixed frame (2) is fixed to the inner wall of the fixed cavity (6), a connecting rod (3) is connected to the bottom outer wall of the fixed frame (2), a connecting cylinder (4) is connected to the bottom outer wall of the connecting rod (3), a spring (8) is connected to the inner wall of the connecting cylinder (4), a fixed rod (9) is connected to the end of the spring (8) away from the connecting rod (3), the outer diameter of the fixed rod (9) matches the inner diameter of the connecting cylinder (4), and a stop block (5) is connected to the bottom outer wall of the fixed rod (9). Observation mechanism: The observation mechanism is located on one side of the outer wall of the terminal body (1).

2. The terminal protection device according to claim 1, characterized in that, The fixed cavity (6) has an inverted conical structure.

3. The terminal protection device according to claim 1, characterized in that, The outer diameter of the stop (5) matches the opening at the bottom of the fixed cavity (6).

4. A terminal protection device according to claim 1, characterized in that, The observation mechanism includes a transparent glass cover plate (7) connected to the outer wall of one side of the terminal body (1). Four connecting blocks (13) are fixed to the outer wall of one side of the transparent glass cover plate (7). A sealing ring (12) is connected to the outer wall of the transparent glass cover plate (7) near the terminal body (1). Observation mirrors (10) are connected to the outer walls of both sides of the transparent glass cover plate (7). A limiting groove (11) is provided on the outer wall of one side of the transparent glass cover plate (7). The sealing ring (12) is connected to the inner wall of the limiting groove (11).

5. A terminal protection device according to claim 4, characterized in that, The two observation mirrors (10) are located on the outer walls of the sealing ring (12) on both sides, and the outer wall of the two observation mirrors (10) away from the transparent glass cover plate (7) has a convex structure.

6. A terminal protection device according to claim 4, characterized in that, The four connecting blocks (13) are snapped onto the outer wall of one side of the same terminal body (1).

7. A terminal protection device according to claim 1, characterized in that, The top outer wall of the terminal block body (1) is connected to a bolt (14), and the top outer wall of the terminal block body (1) is provided with a limiting hole. The bolt (14) and the limiting hole are connected by threads.

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