A trip mechanism for a surge protector

Abstract

The utility model discloses a kind of tripping mechanism of surge protector, the tripping mechanism of this surge protector includes base, the base is equipped with support frame, the support frame is equipped with support, the support frame is equipped with liftable tripping assembly, welding space that the support frame and support between form accommodate tripping assembly, the tripping assembly includes movable top rod, and the discharge tube being set on it, and the fuse piece connected with one end of the discharge tube, the both sides of the support are equipped with piezo-resistor. By setting welding space, it is convenient for automatic equipment to implement double-end synchronous welding to fuse piece and first electrode piece, improve welding efficiency and operation visibility, reduce welding bad rate, simultaneously optimize tripping assembly positioning and assembly, enhance tripping mechanism action reliability and surge protector long-term operation stability;The structure design is simple, reduces failure probability, improves manufacturing process flow, improves the consistency of product quality.

Description

Technical Field

[0001] This utility model relates to the field of surge protector technology, and in particular to a tripping mechanism for a surge protector. Background Technology

[0002] Surge protectors are indispensable devices for lightning protection of electronic equipment. Formerly known as lightning arresters or overvoltage protectors, their function is to limit transient overvoltages entering power lines or signal transmission lines to within the tolerance range of the equipment or system, or to discharge lightning current to the ground, thereby protecting the equipment from impact damage. To prevent overheating and fire of internal functional components, surge protectors typically integrate a tripping mechanism. This mechanism is a crucial component that causes switches or other electrical components to trip automatically, and is commonly found in circuit breakers. During the closing process and in the closed position, the tripping mechanism acts as a fulcrum. When the circuit breaker trips, the tripping mechanism, operated by the tripping device, releases the fulcrum, allowing the circuit breaker to enter a free-open state.

[0003] Surge protectors often employ a thermal trip structure, collecting temperature change signals from functional components. A thermal trip device based on the principle of low-temperature solder melting at high temperatures is installed at the varistor pins. When the varistor heats up, the temperature is transferred to the low-temperature solder joint, melting the solder and triggering the connected tripping mechanism, disconnecting the varistor path and removing the circuit from danger. During abnormal temperature rises, special components in the thermal trip structure rise synchronously due to temperature transfer and undergo physical changes, causing components with a tendency to break to disconnect.

[0004] However, low-temperature solders are often constrained by the limited space inside the tripping mechanism during the welding process, affecting welding efficiency and increasing manufacturing costs. Furthermore, welding quality is difficult to guarantee, potentially leading to unstable thermal tripping action and impacting the long-term reliability of the equipment. Against this backdrop, the applicant has developed a beneficial design and proposed a technical solution to address the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the traditional tripping mechanism design and to provide a product that improves welding efficiency, has a simple structure, reduces the failure rate, and lowers manufacturing costs.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A tripping mechanism for a surge protector includes a base, a support frame, a bracket, and a liftable tripping assembly. A welding space for accommodating the tripping assembly is formed between the support frame and the bracket. The tripping assembly includes a movable push rod, a discharge tube disposed thereon, and a fuse connected to one end of the discharge tube. Varistors are disposed on both sides of the bracket, and the first electrode of the varistor is welded to the fuse using low-temperature solder.

[0008] Preferably, the movable push rod is provided with a trigger part, the movable push rod is provided with a chamber for accommodating the discharge tube, the movable push rod is provided with a wire groove, and is located below the other end of the discharge tube.

[0009] Preferably, the support frame is provided with a slide for the trigger part to move up and down.

[0010] Preferably, the top of the support frame is provided with a warning area, the support frame is provided with a rotatable marker block located directly above the warning area, the marker block is provided with abutting parts on both sides and abuts against the triggering part, and the abutting part is provided with a guide slope that cooperates with the triggering part.

[0011] Preferably, the base is provided with a first lead and a second lead. The first lead is electrically connected to the discharge tube via a flexible connection, and the second lead is electrically connected to the second electrode plate of the varistor.

[0012] Preferably, the movable top rod is provided with a guide rod that passes through the base, and the outer wall of the guide rod is provided with a compression spring that acts between the movable top rod and the base.

[0013] Preferably, the welding space is adapted to accommodate the operating area of ​​automated welding equipment.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention, by setting up a welding space, facilitates automated equipment to perform simultaneous welding of the fuse sheet and the first electrode sheet at both ends, improving welding efficiency and operational visibility, reducing welding defect rate, and also facilitating accurate positioning and assembly of the tripping assembly, enhancing the reliability of the tripping mechanism and the long-term operational stability of the surge protector; furthermore, the structural design is simple, reducing the probability of failure, optimizing the overall manufacturing process, and improving the consistency of product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the tripping mechanism of a surge protector according to the present invention;

[0018] Figure 2 This is a side cross-sectional view of the tripping mechanism of a surge protector according to the present invention in its initial state.

[0019] Figure 3 This utility model Figure 2 A partial enlarged view A of the tripping mechanism of a surge protector;

[0020] Figure 4This is a side cross-sectional view of the segmented tripping mechanism of a surge protector according to the present invention.

[0021] Figure 5 This utility model Figure 4 A partial enlarged view (B) of the tripping mechanism of a surge protector;

[0022] Figure 6 This is a schematic diagram of the internal structure of the tripping mechanism of a surge protector according to this utility model. Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the internal structure of the tripping mechanism of a surge protector according to this utility model. Figure 2 ;

[0024] The correspondence between the labels and component names in the attached figures is as follows:

[0025] Reference numerals: 1. Base; 2. Support frame; 3. Bracket; 4. Tripping assembly; 5. Welding space; 6. Varistor; 7. Identifier block; 8. Housing; 11. First lead-out pin; 12. Second lead-out pin; 21. Slide groove; 22. Warning area; 41. Movable push rod; 42. Discharge tube; 43. Fuse; 44. Compression spring; 411. Trigger part; 412. Chamber; 413. Wire groove; 414. Guide rod; 61. First electrode plate; 62. Second electrode plate; 71. Buckling part; 72. Guide slope; 81. Observation window. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0029] Reference example Figures 1 to 7 A surge protector tripping mechanism includes a base 1, a support frame 2, a bracket 3, and a liftable tripping assembly 4. A welding space 5 is formed between the support frame 2 and the bracket 3 to accommodate the tripping assembly 4. The tripping assembly 4 includes a movable top rod 41, a discharge tube 42 disposed thereon, and a fuse 43 connected to one end of the discharge tube 42. Varistors 6 are provided on both sides of the bracket 3. The first electrode 61 of the varistor 6 is welded to the fuse 43 by low-temperature solder.

[0030] By optimizing the spatial layout, the assembly accuracy and process consistency are significantly improved, welding deviations caused by structural instability are reduced, and the reliability of electrical connections is ensured. By setting up the welding space 5, it is convenient for automated equipment to perform double-end synchronous welding of the fuse piece 43 and the first electrode piece 61, which improves welding efficiency and operational visibility, reduces the welding defect rate, and facilitates the accurate positioning and assembly of the tripping assembly 4, enhancing the reliability of the tripping mechanism and the long-term operational stability of the surge protector. Furthermore, the structural design is simple, reduces the probability of failure, optimizes the overall manufacturing process, and improves the consistency of product quality.

[0031] It is worth mentioning that the movable push rod 41 is provided with a trigger part 411, the movable push rod 41 is provided with a chamber 412 for accommodating the discharge tube 42, the movable push rod 41 is provided with a wire groove 413 and is located below the other end of the discharge tube 42. The chamber 412 provides a quick positioning and assembly function for the discharge tube 42, ensuring its installation accuracy and structural stability. The arrangement of the wire groove 413 effectively guides the direction of the flexible connection and also plays a protective role, avoiding mechanical damage or external interference to the flexible connection during operation.

[0032] It is worth mentioning that the support frame 2 is provided with a slide 21 for the trigger part 411 to move up and down, and the slide 21 structure provides a guiding function for the trigger part 411;

[0033] It is worth mentioning that the top of the support frame 2 is provided with a warning area 22. The support frame 2 is provided with a rotatable marker block 7, which is located directly above the warning area 22. The marker block 7 is provided with a latching part 71 on both sides, which abuts against the triggering part 411. The latching part 71 is provided with a guide slope 72 that cooperates with the triggering part 411. The base 1 is also provided with a housing 8. The housing 8 is provided with an observation window 81, which is located above the warning area 22 and the marker block 7. When the high temperature causes the low temperature solder to melt, the fuse 43 is disconnected from the first electrode piece 61, the movable top rod 41 enters a free movement state, the compression spring 44 pushes it to rise rapidly, the contact head moves along the guide slope 72, and then drives the marker block 7 to rotate and leave the warning area 22. The color change of the warning area 22 prompts the maintenance personnel to quickly locate the corresponding circuit problem. This design realizes the visualization of the fault status, improves maintenance efficiency, and enhances the safety of equipment operation.

[0034] It is worth mentioning that the base 1 is provided with a first lead 11 and a second lead 12. The first lead 11 is electrically connected to the discharge tube 42 through a flexible connection, and the second lead 12 is electrically connected to the second electrode plate 62 of the varistor 6.

[0035] It is worth mentioning that the movable top rod 41 is equipped with a guide rod 414 that passes through the base 1. The outer wall of the guide rod 414 is equipped with a compression spring 44, which acts between the movable top rod 41 and the base 1. When the movable top rod 41 is in a free-moving state, the compression spring 44 pushes the movable top rod 41 to quickly perform circuit breaking, thereby improving the dynamic response characteristics of the mechanism. The guide rod 414 not only has a guiding function, but can also be linked with the micro switch in the surge protector. When the circuit is broken, it sends a signal to the host, which makes it easy for the operator to quickly locate the damaged circuit equipment.

[0036] It is worth mentioning that the welding space 5 is suitable for accommodating the operating area of ​​automated welding equipment. This design fully considers the needs of modern intelligent manufacturing processes, providing ample operating space and good visibility for automated equipment, which facilitates the synchronous welding of the safety piece 43 and the first electrode piece 61 at both ends. This layout not only improves welding efficiency and quality consistency, but also reduces the need for manual intervention and reduces human error.

[0037] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A tripping mechanism for a surge protector, comprising a base (1), characterized in that: The base (1) is provided with a support frame (2), the support frame (2) is provided with a bracket (3), the support frame (2) is provided with a liftable tripping assembly (4), a welding space (5) for accommodating the tripping assembly (4) is formed between the support frame (2) and the bracket (3), the tripping assembly (4) includes a movable top rod (41), a discharge tube (42) disposed thereon, and a fuse (43) connected to one end of the discharge tube (42), the bracket (3) is provided with varistors (6) on both sides, and the first electrode plate (61) of the varistor (6) is welded to the fuse (43) by low temperature solder.

2. The tripping mechanism of the surge protector according to claim 1, characterized in that: The movable push rod (41) is provided with a trigger part (411), the movable push rod (41) is provided with a chamber (412) for accommodating the discharge tube (42), the movable push rod (41) is provided with a wire groove (413) and is located below the other end of the discharge tube (42).

3. The tripping mechanism of the surge protector according to claim 2, characterized in that: The support frame (2) is provided with a slide (21) for the trigger part (411) to move up and down.

4. The tripping mechanism of the surge protector according to claim 2, characterized in that: The top of the support frame (2) is provided with a warning area (22). The support frame (2) is provided with a rotatable marker block (7) located directly above the warning area (22). The marker block (7) is provided with a latching part (71) on both sides, which abuts against the triggering part (411). The latching part (71) is provided with a guide slope (72) that cooperates with the triggering part (411).

5. The tripping mechanism of the surge protector according to claim 2, characterized in that: The base (1) is provided with a first lead-out pin (11) and a second lead-out pin (12). The first lead-out pin (11) is electrically connected to the discharge tube (42) through a flexible connection, and the second lead-out pin (12) is electrically connected to the second electrode plate (62) of the varistor (6).

6. The tripping mechanism of the surge protector according to claim 1, characterized in that: The movable top rod (41) is provided with a guide rod (414) that passes through the base (1). The outer wall of the guide rod (414) is provided with a compression spring (44) that acts between the movable top rod (41) and the base (1).

7. The tripping mechanism of the surge protector according to claim 1, characterized in that: The welding space (5) is suitable for accommodating the operating area of ​​automated welding equipment.

Images