CN214672468U - Signal SPD tripping mechanism - Google Patents

Abstract

The utility model belongs to circuit protection equipment, in particular to a signal SPD tripping mechanism which is arranged on a circuit board and is used for connecting a heating protection element on the circuit board with the circuit board circuit, and comprises a tripping rod and an energy storage structure, wherein the tripping rod is connected with the circuit board circuit and the heating protection element in a low-temperature soldering tin mode; when the tripping rod is tripped due to overheating, the tripping rod is pushed by the energy storage structure to act and is disconnected with the circuit of the circuit board and the heating protection element, and meanwhile, the metal conductor blocked by the tripping rod is attached to the static contact disc on the circuit board. The utility model discloses a set up action piece isotructure and realize providing stable hot dropout function to the power consumption protection circuit of integration on PCB circuit board to compare in current hot dropout mechanism can set up in thinner casing.

Description

Signal SPD tripping mechanism

Technical Field

The utility model belongs to the technical field of power consumption protection equipment, concretely relates to signal SPD tripping device.

Background

The tripping mechanism is an important component for promoting the automatic tripping of the switch in an operating system, the tripping mechanism acts as a force fulcrum when a circuit breaker or other electric protection equipment with the switching mechanism is in a switching-on process and at a switching-on position, and when the electric protection equipment is automatically tripped, the tripping mechanism is controlled by the tripping device to remove the fulcrum, so that the circuit breaker enters a free switching-off state. Generally speaking, a lever and a spring mechanism in a switch are supported by a release, and once the release acts, the lever and the spring mechanism in the switch can be reset freely, namely the switch trips. The release is equivalent to a pin for hanging bait in the mousetrap.

Regardless of the type of circuit breaker, a method such as a thrust force in an energy storage state, a driving force of compressed air, or an electromagnetic driving force is often used. Particularly, when the spring force is adopted to carry out brake opening action, the spring is kept in a compressed energy storage state under the action of driving force in a brake closing state, and at the moment, the spring is buckled by a mechanical hook so as to keep the brake closing state. In the case of opening, the hook is usually tripped to start the opening operation, and therefore, in any case, the start of the opening operation of the circuit breaker is referred to as tripping, and the opening operation is referred to as tripping. Therefore, the tripping action actually refers to the action of opening a valve to discharge compressed air or oil pressure for keeping closing in addition to the tripping mode of the mechanical hook, and the action for driving the air pressure or the oil pressure is supplied; and an operation of sending a pulse current to the driving solenoid. Since the trip operation requires a large amount of operation energy to be handled in the final stage, there are some cases where the trip is completed through several stages of control operations, some cases where the mechanical trip is performed by a small spring in the initial stage by using a fluid driving force in the final stage, and some cases where the small air valve is operated in the initial stage and the spring driving force is used in the final stage.

The existing tripping mode is mostly realized by adopting the mode, but most of the tripping mechanisms are arranged in equipment with a certain abundant installation space, and if the installation space is greatly reduced compared with the prior art, the original tripping mechanism cannot be applied, the structure needs to be optimized and adjusted, and stable tripping in a certain range is realized in a small installation space.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that prior art exists, the utility model provides a signal SPD tripping device aims at through realizing comparatively stable dropout effect on the circuit board, can outwards report to the police through modes such as sheltering from, linkage or demonstration simultaneously.

The utility model discloses the technical scheme who adopts does:

in a first aspect, the utility model discloses a signal SPD tripping mechanism, which is arranged on a circuit board and used for connecting a heating protection element on the circuit board with the circuit board circuit, and comprises a tripping rod and an energy storage structure, wherein the tripping rod is connected with the circuit board circuit and the heating protection element in a low-temperature soldering manner;

when the tripping rod is tripped due to overheating, the tripping rod is pushed by the energy storage structure to act and is disconnected with the circuit of the circuit board and the heating protection element, and meanwhile, the metal conductor blocked by the tripping rod is attached to the static contact disc on the circuit board.

The utility model discloses a tripping device spare is the independent structure of a setting on the circuit board, through with the solid circuit integration on the circuit board, then inserts the circuit with the mode of surface mounting piece encapsulation with some components and parts to reduce the solid circuit structure originally, save installation space. In a conventional circuit protection device, such as a circuit breaker or a surge protector, a plurality of functional parts are provided to form a single or a plurality of paths, and circuit protection control is achieved by penetrating a main circuit. Functional unit wherein contains heating protection component, arc extinguishing subassembly, dropout subassembly etc. still has the wire structure of entity, leads to whole equipment to have certain volume, to the condition that does not possess great installation space, then needs optimize the adjustment to equipment structure to be applicable to the installation demand in little space.

The mode of the integrated circuit board is one of optimized selection, most of the solid circuits are integrated in the integrated circuit board in a mode of the printed circuit board, the size of the integrated circuit board is greatly reduced on the premise that normal conduction current can be guaranteed, the thickness of a shell with the original thickness of 9mm and 18mm is reduced to about 6mm, and therefore the original smaller shelving space can be additionally provided with a plurality of groups of protection devices.

However, in the above-mentioned device, only a part of the device is integrated in the PCB, and other functional components are mechanical operation mechanisms and cannot be disposed on the PCB through the patch, so that the structure of the part of the functional components needs to be adjusted to achieve a small occupied volume.

The utility model provides an equipment is connected with external circuit through participating in, and wherein so-called participating in does not restrict for inserting or connect out, owing to series circuit, then one end junction disconnection can realize the disconnection of whole way. And the utility model provides an it has two at least circuits to integrate on the PCB board, and one of them circuit is the main line to regard the link of the protection component that generates heat as one of them end of inserting external circuit, the protection component that generates heat then concatenates in this main line.

The heating protection element comprises various types of surge protection modules, including but not limited to fuses, zinc oxide varistors, discharge tubes, discharge gaps, inductance coils, TVS tubes and the like, and the devices can generate certain change when abnormal current occurs in a circuit after model selection and adaptation, or the originally conducted circuit becomes an open circuit, or the originally open circuit condition becomes a closed circuit, so that different technical effects are achieved. And the utility model discloses a tripping device then is the mechanical equipment who is used for monitoring this heating protection component, can appear the leakage current condition when heating protection component goes wrong or became invalid, and this leakage current can arouse this module to generate heat, so can in time break off the main circuit that heating protection component belongs to through this thermal trip mechanism and participate in between being connected to avoid leading to the circuit to appear other accidents because of heating protection component became invalid back.

The utility model discloses mainly optimize tripping device to the cooperation circuit board realizes corresponding the effect. The tripping mechanism is that when abnormal current occurs in an originally accessed circuit, a certain change is generated in components in the tripping mechanism in the protection device, and when the abnormal current reaches a certain condition, the tripping mechanism can be operated to disconnect an internal circuit of the protection device, so that the access circuit is protected by forming an open circuit. The difference with the prior art lies in that, the utility model discloses be in realizing the cooperation with heating protection component, printed circuit, be participated in and form a laminating circuit board and can be at gliding lamellar structure on the circuit board between heating protection component, this lamellar structure is the trip bar promptly (the trip bar only is used for pointing out this structure, does not restrict its concrete shape and is shaft-like).

And an energy storage structure fixed on the circuit board is further arranged on one side of the trip rod, and the energy storage structure is a mechanical structure and comprises an external function drive type and an internal potential energy drive type. The tripping rod can always give a thrust or other actuating force in an initial state, the tripping rod can act after the energy storage structure is excited, and the tripping rod has only one movement direction at the moment, namely, the tripping rod moves towards the direction of separating the circuit board circuit from any one end of the heating protection element, so that a serial leakage route passing through the heating protection element from an external circuit is broken. The trip bar can also directly push the heating protection element to move to be disconnected with the circuit of the circuit board. It should be noted that, for those skilled in the art, according to the utility model discloses a can further confirm to promote the connecting piece or directly promote the protection component that generates heat by the trip bar and set up solitary energy storage structure and also can realize corresponding effect, only compare in technical realization above-mentioned two modes cost and degree of difficulty higher, then generally do not use.

The so-called low-temperature soldering connection is a common thermal trip connection relation in the field, and also includes any connection mode with the characteristic of thermal structure change, generally speaking, as long as the low-melting point material is kept in a fixed state at normal temperature, a circuit board circuit is connected with a heating protection element, and after abnormal heat release, the temperature is increased to a certain threshold value and then is melted, so that the connection stability is rapidly reduced, and the corresponding thermal trip effect can be realized. The external force applied to the trip rod will drive the connector to move so that the pin and the heat protection element are disconnected.

It should be noted that the conductive end is a conductive structure disposed on the trip bar, and is generally made of metal, and other stable thermally stable solid structures may be used instead.

It is still worth explaining that the utility model discloses a still have the branch road on the circuit board, this branch road structure is integrated on the circuit board equally to have the static contact dish on the circuit board. The stationary contact pad is a conductive region having a large area on the circuit board, and is connected to an external conductor by soldering, direct bonding, or the like. Originally the utility model discloses a have and only have a series circuit among the circuit protection equipment that tripping assembly used: a main circuit. The branch circuit is a standby circuit, is not connected with any external circuit in an initial state, and is connected only after the action of the trip lever.

Because the core functional component of the whole circuit protection device is a heating protection element, the tripping component cuts off the circuit after the heating protection element is invalid and deteriorated, thereby avoiding other subsequent accidents. However, in many important devices, especially in a communication base station installed in a remote area, once an abnormal thermal trip of a heat-generating protection element occurs, a circuit cannot be restored in a delayed manner. If the access circuit is disconnected, a large area of communication equipment is broken down, which seriously affects the communication safety of the area and causes great loss. Even if the maintenance personnel are difficult to reach, even if the alarm device is arranged, the power failure consequence between maintenance and reset can not be borne. Therefore, the branch circuits are independent circuits, and the effect of replacement protection can be realized by arranging new heating protection elements with other protection equipment or independently. Even if no protective equipment is arranged on the branch, the circuit can be kept in a smooth state from fault alarm to maintenance, so that greater loss is avoided. The technical point is different from the prior art, the circuit breaker can be applied to the circuit breaker, and can also be arranged in the surge protector, the surge protector can be simultaneously arranged in parallel, and after a deterioration alarm, the rest protectors can also play a role in protection.

The thermal trip is a state that a low-temperature tin soldering part between the conductive end of the trip rod and the connecting position of the two structures is disconnected after being heated, and the trip rod is a movable part and can be immediately pushed by the energy storage structure to act after the limit connection is lost.

In combination with the first aspect, the present invention provides the first embodiment of the first aspect, wherein the trip bar is provided with a separation plate, and when the trip bar is not tripped, the separation plate blocks between the metal conductor and the static contact plate.

It should be noted that the isolation plate is a structure integrally connected with the trip bar, or an insulation structure separately fixed at one end of the trip bar. The separator has a certain surface area, and can effectively prevent the metal conductor from contacting with the static contact disc. The metal conductor is kept limited in an initial state, once the isolating plate moves, the circuit of the circuit board is disconnected with the heating protection element at first, but the metal conductor is connected with the static contact disc at the same time, and therefore a mechanism for replacing the circuit in a linkage mode is formed. It should be noted that, the division plate is a fixed structure, the mechanism of action of the division plate is to generate a vacancy during displacement, and the metal conductor has an action tendency toward the attaching direction of the static contact plate, the action tendency may be an external force given by other components, or an appropriate material structure may be provided, so that the metal conductor can have an internal stress for a long time, thereby providing the action tendency.

In combination with the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the metal conductor is provided with a contact pad on the circuit board for having an elastic contact piece, one end of the elastic contact piece is connected to the surface of the contact pad, and the other end of the elastic contact piece is crimped to the surface of the isolation board.

Combine first aspect and first, second kind implementation mode of first aspect, the utility model provides a third kind implementation mode of first aspect, still be equipped with thermal trip sheetmetal on the trip bar, thermal trip sheetmetal is connected through low temperature soldering mode with circuit board circuit and the protection component that generates heat.

With reference to the third embodiment of the first aspect, the present invention provides the fourth embodiment of the first aspect, wherein the heat-generating protection element is fixed on the circuit board and has a primary electrode pad on the circuit board; and a secondary electrode pad of the circuit board circuit is arranged on one side of the primary electrode pad, and the thermal trip metal sheet is connected with the primary electrode pad and the secondary electrode pad simultaneously.

Combine first aspect and first, second kind implementation mode of first aspect, the utility model provides a fifth kind implementation mode of first aspect, still be equipped with the magnet on the trip bar, be equipped with the hall sensor who is used for detecting the magnet position on the circuit board.

Combine first aspect and first, second kind implementation mode of first aspect, the utility model provides a sixth kind implementation mode of first aspect, have the discernment unthreaded hole on the circuit board, during thermal tripping the trip bar blocks the light path of discernment unthreaded hole.

Particularly, the trip bar structure is for laminating and sliding along its surperficial place plane on the circuit board surface, compares in current thermal trip mechanism, and the trip bar can guarantee to have thinner thickness under the prerequisite of certain structural strength through the mode that reduces thickness increase width, can set up in 6mm or thinner casing. The remote signaling module is characterized in that the remote signaling module is different from the remote signaling module in that a thin structural design is adopted, the circuit protection equipment adopting the tripping assembly is arranged in parallel, single-line series protection or multi-line protection can be realized, independent identification light holes are arranged on each equipment, all the identification light holes are aligned to form a through channel when the equipment is arranged in parallel, light sources penetrating through the channel are arranged on two sides of the channel, once blocking occurs, one or more tripping rods are indicated to act, an external detection circuit can feed back outwards at the first time, and the external detection circuit can process the tripping assembly when arriving at the site in time.

In combination with the first aspect and the first and second embodiments of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein the trip bar further has a trip display surface, and the trip display surface is exposed for display when the trip bar is thermally tripped.

Combine first aspect and first, second kind implementation mode of first aspect, the utility model provides an eighth kind implementation mode of first aspect, the guide bar has on the trip bar, the energy storage structure establishes the spring on the guide bar for the cover, the other end and the circuit board fixed connection of spring.

In combination with the first aspect and the first and second embodiments of the first aspect, the present invention provides a ninth embodiment of the first aspect, wherein the trip bar further has a guide groove, and the guide groove cooperates with an external protrusion structure to realize sliding limitation.

It is worth mentioning that the guiding groove and the convex guiding rail are mutually sliding fit pieces, and the purpose is to limit the trip bar to reciprocate only along the fixed direction through two structures. The male guide rails are typically provided on a housing structure for protecting the circuit board, as well as on the circuit board.

The utility model has the advantages that:

(1) the utility model realizes the stable thermal tripping function of the power consumption protection circuit integrated on the PCB circuit board by arranging the structure of the action piece and the like, thereby being arranged in a thinner shell compared with the prior thermal tripping mechanism;

(2) the utility model discloses a to participate in or the elasticity contact piece that sets up alone and the cooperation of the static contact dish on the circuit board forms reserve branch road, shelters from by the insulating part on the action body under normal condition, in the main circuit disconnection and introduces the branch road with the electric current after the action of action piece to can avoid the main circuit disconnection after outwards sending the trouble and reporting an emergency and asking for help or increased vigilance.

Drawings

Fig. 1 is a side view of a tripping mechanism arranged in a housing according to embodiment 1 of the present invention;

fig. 2 is a first axial view of the trip mechanism in embodiment 1 of the present invention, which is disposed in the housing and is in a thermal trip state;

fig. 3 is a second axial side view of the trip mechanism in embodiment 1 of the present invention, which is disposed in the housing and is in a thermal trip state;

fig. 4 is a side view of embodiment 1 of the present invention with the trip bar removed;

fig. 5 is a first axial view of the tripping mechanism in the connection state in the case of embodiment 1 of the present invention;

fig. 6 is a second axial side view of the tripping mechanism arranged in the housing and in a connected state in embodiment 1 of the present invention;

fig. 7 is a schematic axial view of a trip bar according to embodiment 1 of the present invention;

fig. 8 is a side view of a trip bar according to embodiment 1 of the present invention;

fig. 9 is a schematic axial view of embodiment 1 of the present invention with a trip bar removed;

fig. 10 is a front view of the trip mechanism in embodiment 1 of the present invention, which is disposed in the housing and in a thermal trip state.

In the figure: 1-circuit board, 2-TVS tube, 3-spring, 4-static contact disc, 5-Hall sensor, 6-elastic contact piece, 7-contact piece welding disc, 8-convex guide rail, 9-guide groove, 10-trip display surface, 11-trip display window, 12-magnet, 13-trip rod, 14-guide rod, 15-thermal trip metal piece, 16-primary electrode welding disc, 17-secondary electrode welding disc and 18-isolation plate.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the embodiment discloses a signal SPD tripping mechanism applied to a surge protector, which comprises a shell and a base, wherein the shell and the base are mutually in sliding splicing fit. Wherein the base is provided with a plurality of connecting terminals for connecting an external circuit. The shell is of a split structure and comprises a main body and a cover plate buckled on one side of the main body. The main body is internally provided with a sinking groove with the thickness less than 6mm, and the circuit board 1 which fills the sinking groove is arranged in the sinking groove.

As shown in fig. 1 to 10, there is shown a circuit board 1 structure disposed in a housing, the circuit board 1 being of a different structure and fixed in a housing main body by bolts. The lower part of the shell is provided with a plurality of rectangular openings for a plurality of pins on the circuit board 1 to penetrate out, and when the shell is connected with the base, the pins correspond to the sockets on the base.

The circuit board 1 is provided with a protection circuit, which comprises a main circuit and a branch circuit, wherein the main circuit is provided with a heating protection element, and the heating protection element is a TVS tube 2 fixedly connected to the circuit board 1 through a surface mount technology in the embodiment.

The main circuit on the circuit board 1 is used for discharging instantaneous overload current in the access circuit, thereby achieving the function of protecting the access circuit. The TVS tube 2 on the main circuit is broken in a normal state originally, once the TVS tube is degraded or fails, leakage current exists in the main circuit, the continuous leakage current condition can cause the whole protection device to generate heat, and the fault cannot be timely eliminated, so that the fire hazard can be generated.

In order to improve the safety and stability, a tripping assembly is arranged on the circuit board 1, and the tripping assembly comprises a tripping rod 13 and an energy storage structure, wherein the energy storage structure always gives an action force for directional movement of the tripping rod 13 on the circuit board 1. And the heat-generating protection element is connected with the circuit of the circuit board 1 (i.e. the external circuit introduced from the pins) and is connected at the connection position by low-temperature soldering.

Further, a metal conductor is also arranged on the trip bar 13, the metal conductor is a thermal trip metal sheet 15 shown in the figure, a secondary electrode pad 17 connected with an internal circuit is arranged on the circuit board 1, a primary electrode pad 16 is arranged on one side of the TVS tube 2, and the thermal trip metal sheet 15 is simultaneously connected with the primary electrode pad 16 and the secondary electrode pad 17 in a low-temperature soldering manner, so that a complete series circuit including the TVS tube 2 is formed. The current entering the SPD passes through the thermal trip metal sheet 15 and the heating protection element and flows to the other pin from the main circuit, so that the current leakage effect is achieved. When continuous leakage current exists, the conductor on the whole circuit can generate heat, the TVS tube 2 is a main heating device, low-temperature tin soldering close to the connection part of the device can be softened and melted at a certain temperature, and when the adhesive force is smaller than the thrust provided by the trip bar 13, the trip bar 13 can rapidly act to cause the connection body to be separated from the TVS tube 2, namely, the main circuit is broken.

The circuit board 1 in this embodiment is further provided with a branch which is a backup connection after the main circuit thermal trip is disconnected, and the branch can also be provided with a heating protection element, and the circuit board 1 is provided with a metal static contact disc 4. An elastic contact piece 6 electrically connected to the circuit board 1 is provided near the metal stationary contact plate 4, and the elastic contact piece 6 is blocked by a partition plate 18 belonging to the trip bar 13 when the main circuit is kept in a connected state and cannot be brought into contact with the stationary contact plate 4. The elastic contact piece 6 is not linked with the trip bar 13, when the trip bar 13 acts, the isolation plate 18 in the middle also acts to other positions, and the end part of the elastic contact piece 6 which loses the blockage moves towards the side of the circuit board 1 with the static contact disc 4 due to the self elastic action and is finally attached to the static contact disc 4, so that the branch of the circuit board 1 forms a passage.

The branch circuit and the main circuit are in parallel connection or two independent circuits, a plurality of leading-out ends can be arranged due to the fact that a plurality of wiring terminals are arranged on the base, the leading-out ends of the main circuit and the leading-out ends of the branch circuit can be the same or different, for example, spare heating protection elements are also arranged on the branch circuit, the leading-out ends of the main circuit and the branch circuit are the same, and when the heating protection elements on the main circuit are failed and disconnected, current continues to drain from the branch circuit. At this time, the trip bar 13 may be configured as a two-stage structure, and when the connecting body of the main circuit is fused, the trip bar 13 acts and abuts against the connecting body of the branch heating protection element. Meanwhile, two or more alarm devices are arranged on the circuit board 1, and can send alarm signals outwards after the trip bar 13 is operated once through the circuit board or through being matched with external equipment, and at the moment, branches exist, so that more abundant on-site maintenance time can be provided, and the circuit board is suitable for the power utilization protection system of communication equipment in remote areas or unmanned areas.

Further, for better illustration of the specific structure, as shown in fig. 1 to 10, the cover plate on the side of the housing is removed to expose the internal circuit board 1 structure. It can be seen that only the structural components related to the trip mechanism are present on the circuit board 1 in the figure, and the electronic components originally present on the circuit board 1 are not shown, so as to avoid disclosure of other unrelated technologies.

It can be seen that the trip bar 13 shown in the figure is a sliding part structure, a convex guide rail 8 is arranged on the inner wall of the shell or the circuit board 1, a guide groove 9 matched with the convex guide rail 8 is arranged on the trip bar 13, and the linear motion limiting effect of the trip bar 13 is realized by the matching of the guide groove 9 and the convex guide rail 8.

The energy storage structure arranged on the other side is specifically a guide rod 14 with a spring 3, one end of the guide rod 14 is connected to the trip rod 13, and the spring 3 is compressed to form a pushing trend towards the right of the trip rod 13. And the lower side of the trip bar 13 is a TVS tube 2 as a heat protection element, which is connected to the trip bar 13 through a right connecting body.

In which the trip bar 13 in fig. 5 and 6 is maintained in a normal state, and fig. 2 and 3 are the states after the trip bar 13 has been actuated. At this time, the structure of the exposed elastic contact piece 6 is seen, and the elastic contact piece 6 is originally connected to the connection body by a conductor built in the trip lever 13, which may be a fixed structure or a separately provided metal cord as a connection conductor only. After the trip bar 13 moves rightwards, the elastic contact piece 6 is attached to the circuit board 1 and connected with the two static contact discs 4 of the circuit board 1. The stationary contact plate 4 can be connected to the terminal pins or terminal pins via printed circuits on the circuit board 1, and similarly the resilient contact plate 6 can be connected to both pins via physical or printed circuits.

Further, in the present embodiment, the trip bar 13 further has a shielding portion, and a circular identification light hole is provided in the housing for passing through an external light path. If the trip lever 13 is not operated, the identification light hole is in a through state at this time, external light can directly pass through, and when the trip lever 13 is operated, the shielding part can block the light path, thereby generating a change signal at the first time and informing an external system that the surge protector is operated.

Further, the trip bar 13 in this embodiment is further provided with a circular mounting seat, a magnet 12 is embedded in the mounting seat, and a hall sensor 5 is arranged on the circuit board 1 at a corresponding position, and the hall sensor 5 can detect the position change of the magnet 12 and give an alarm through an internal remote signaling circuit.

Furthermore, a trip display surface 10 is provided on one side end surface of the trip bar 13, the trip display surface 10 is a characteristic surface with a protruding pattern by color or other, and the housing has a trip display window 11, that is, an opening is provided at a corresponding position and a cover plate made of transparent material is provided on the opening. After the tripping rod 13 acts, the display characteristics in the tripping display window 11 are obviously changed originally, so that a maintainer who arrives at the site can quickly find a corresponding fault module in a plurality of SPD modules arranged side by side for maintenance and replacement.

It should be noted that, although not shown in the drawings of the present embodiment, the circuit board 1 of the whole casing is connected with an external circuit through the pins, and the pins are only used for the circuit board 1 of the whole casing to be electrically connected with an external base during assembly, and the inner part is connected with the external circuit through the elastic contact pieces 6 provided thereon (there are various connection modes, which are determined according to the actual arrangement position of the trip bar 13 and the heat-generating protection element, such as directly connected with the pins or forming an integrated structure, and also such as being arranged on the circuit board 1 and connected with the pins through the printed circuit on the circuit board 1, thereby facilitating flexible arrangement, or the static contact plate 4 is connected with the pins, and the elastic contact pieces 6 are connected with other connection ends of the circuit board 1 through the contact piece pads 7), and due to the structural characteristics of the metal pieces, the circuit board 1 can be bent to some extent (or can be a movable member, but since the elastic contact piece 6 itself has a certain elasticity, the material property itself is directly utilized). In the initial state, the trip bar 13 is connected to the heat generation protection element due to the low-temperature solder connection, and the spacer 18 is interposed between the elastic contact piece 6 and the stationary contact plate 4.

Example 2:

the embodiment discloses a signal SPD tripping mechanism applied to a surge protector, which is the same as the embodiment 1, the surge protector is provided with a shell and a base, and the thickness of the surge protector is 6mm, which is lower than the conventional thickness of 9mm and 18mm of the existing circuit breaker.

The circuit board 1 tripping device is also arranged in the SPD, and the circuit board 1 is further simplified and is shown in an independent structure. The circuit board 1 has pins directly connected with the elastic contact sheet 6. Still be equipped with ultra-thin trip bar 13 on circuit board 1, trip bar 13 middle part is equipped with guide way 9, realizes along the motion spacing of upper and lower direction through the protruding guide rail 8 cooperation on with circuit board 1.

The trip bar 13 is also provided with a projecting thin plate structure, namely a spacer 18, and in a normal state, the elastic contact piece 6 is blocked by the spacer 18 so as to limit contact with a metallic static contact pad 4 provided on the circuit board 1, and the static contact pad 4 is a branch on the circuit board 1 as in embodiment 1. When the trip bar 13 is actuated, the left connecting body is moved upward at the same time, so that the heat-generating protection element originally connected to the elastic contact piece 6 or the pin is disconnected. Meanwhile, the circular shielding piece at the upper end of the trip rod 13 and the protruded trip display end act simultaneously, the shielding piece shields the identification light hole on the circuit board 1, and an external detection light path is blocked to form an alarm signal. And outstanding dropout display end can be convenient for the maintainer of arriving on the spot to find the part that has moved among a plurality of surge protectors that set up side by side fast to it can directly to change the casing dismantlement.

The energy storage structure of the present embodiment is a spring 3 and a guide rod 14 between the pin and the elastic contact piece 6, the spring 3 applies force to the guide rod 14, and the guide rod 14 directly abuts against the trip rod 13 and always applies upward sliding thrust to the trip rod 13.

Example 3:

the present embodiment has a similar structural design as embodiment 2, and also discloses a circuit board 1 trip assembly. It can be seen that, the heating protection element on the circuit board 1 is fixed on the circuit board 1 by low temperature soldering, and the trip bar 13 directly abuts against one side of the heating protection element, if the low temperature soldering connector at the connection of the heating protection element and the circuit board 1 is melted, the trip bar 13 will be pushed to the upper part to realize the disconnection effect.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (10)

1. The utility model provides a signal SPD tripping device, sets up on circuit board (1) and is used for connecting the heating protection component and the circuit board circuit on circuit board (1), its characterized in that: the energy storage device comprises a trip rod (13) and an energy storage structure, wherein the trip rod (13) is provided with a conductive end which is connected with a circuit of a circuit board (1) and a heating protection element in a low-temperature soldering manner;

when the tripping rod is in overheating tripping, the tripping rod (13) is pushed by the energy storage structure to act and is disconnected with the circuit of the circuit board (1) and the heating protection element, and meanwhile, the metal conductor blocked by the tripping rod (13) is attached to the static contact disc (4) on the circuit board (1).

2. A signal SPD trip mechanism according to claim 1, characterized in that: and an isolation plate (18) is arranged on the trip rod (13), and the isolation plate (18) blocks between the metal conductor and the static contact disc (4) when the trip rod is not tripped.

3. A signal SPD trip mechanism according to claim 2, wherein: the metal conductor is an elastic contact piece (6) with elasticity, a contact piece pad (7) is arranged on the circuit board (1), one end of the elastic contact piece (6) is connected to the surface of the contact piece pad (7), and the other end of the elastic contact piece is pressed on the surface of the isolation plate (18).

4. A signal SPD trip mechanism according to any of claims 1-3, characterized in that: the trip bar (13) is also provided with a thermal trip metal sheet (15), and the thermal trip metal sheet (15) is connected with the circuit of the circuit board (1) and the heating protection element in a low-temperature soldering mode.

5. A signal SPD trip mechanism according to claim 4, wherein: the heating protection element is fixed on the circuit board (1) and is provided with a primary electrode pad (17) on the circuit board (1); and a secondary electrode bonding pad (16) of the circuit board (1) circuit is arranged on one side of the primary electrode bonding pad (17), and the thermal trip metal sheet (15) is connected with the primary electrode bonding pad (17) and the secondary electrode bonding pad (16) simultaneously.

6. A signal SPD trip mechanism according to any of claims 1-3, characterized in that: the trip bar (13) is also provided with a magnet (12), and the circuit board (1) is provided with a Hall sensor (5) for detecting the position of the magnet (12).

7. A signal SPD trip mechanism according to any of claims 1-3, characterized in that: the circuit board (1) is provided with an identification unthreaded hole, and the trip rod (13) blocks the light path of the identification unthreaded hole when in thermal trip.

8. A signal SPD trip mechanism according to any of claims 1-3, characterized in that: the trip bar (13) is also provided with a trip display surface (10), and the trip display surface (10) is exposed and displayed when the trip bar is thermally tripped.

9. A signal SPD trip mechanism according to any of claims 1-3, characterized in that: the tripping rod (13) is provided with a guide rod (14), the energy storage structure is a spring (3) sleeved on the guide rod (14), and the other end of the spring (3) is fixedly connected with the circuit board (1).

10. A signal SPD trip mechanism according to any of claims 1-3, characterized in that: the trip bar (13) is also provided with a guide groove (9), and the guide groove (9) is matched with an external protruding structure to realize sliding limit.

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