SPD remote signaling feedback assembly, thermal tripping structure and SPD structure

Abstract

The utility model discloses an SPD remote signaling feedback assembly, a thermal tripping structure and an SPD structure. The SPD remote signaling feedback assembly is arranged in the SPD structure and is linked with the thermal tripping structure arranged in the SPD structure to form remote signaling signals when the thermal tripping structure acts. Comprising connecting pieces electrically connected with an external remote signaling circuit, and the connecting pieces at least comprise an adjusting connecting piece which is adjustable relative to the SPD structure position; the pressure spring part is linked with the thermal tripping structure, the pressure spring part is provided with a normally open end part and a normally closed end part, and one end of the adjusting connecting sheet is fixed in the SPD structure and is connected with an externally inserted remote signaling circuit; the other end is limited by the normally-open end part or the normally-closed end part to keep a normally-closed connection state or a normally-closed disconnection state with the other connecting piece and has a movable trend of changing the connection state, and the two connecting pieces are connected with an external remote signaling circuit to form a loop.

Description

TECHNICAL FIELD

[0001] The utility model belongs to circuit structure technical field, concretely relates to a kind of SPD remote signaling feedback assembly, thermal tripping structure and SPD structure. BACKGROUND

[0002] SPD surge protector is a kind of device for protecting electrical and electronic equipment from transient overvoltage (such as lightning-induced overvoltage, operating overvoltage, etc.). Its working principle is to guide the overvoltage to the ground in a very short time, so as to avoid the damage of equipment due to overvoltage.

[0003] SPD is usually installed on power supply line or signal line, when transient overvoltage occurs in the line, it can quickly conduct, limit the overvoltage in a safe range. This is achieved by internal nonlinear elements, such as MOV, GDT, TVS, etc. The MOV presents a high resistance state under normal voltage, when the voltage exceeds its threshold, the resistance drops sharply, forming a low resistance path, so that the overvoltage is discharged to the ground through SPD; GDT is open circuit under normal conditions, when the voltage reaches its breakdown voltage, it will be broken down, forming a conductive channel; TVS uses its reverse breakdown characteristic to clamp the overvoltage to a safe level.

[0004] SPD surge protector with tripping structure has additional safety protection function. When SPD performance is degraded or damaged due to multiple overvoltage or its own aging, etc., the tripping structure will act. The tripping structure can be mechanical tripping or thermal tripping, etc., such as mechanical tripping is through internal mechanical device, when it is detected that the performance of SPD exceeds the normal range, mechanical device will act, disconnect SPD from the circuit, avoid potential electrical safety hazards, such as overheating, short circuit, etc. caused by SPD failure. Thermal tripping is according to the temperature change of SPD inside, when internal elements produce excessive heat due to overcurrent, etc., thermal tripping device will trigger, cut off SPD from the circuit. In this way, SPD can be prevented from becoming a safety hazard after failure, to ensure the continuous and stable operation of the whole electrical system, at the same time, it is convenient for user to find the fault state of SPD, replace or repair it, improve the safety and reliability of electrical system.

[0005] But this SPD module with the tripping structure, once the tripping structure act, the corresponding SPD structure forms a circuit failure, need to be replaced immediately. The prior art mostly adopts mechanical indicating structure to feedback its action, and the prior art also realizes a remote signaling feedback effect by connecting external signal circuit. But such remote signaling feedback structure is mostly complex in structure and high in cost, needs to be separately provided with programmable chip, and in the feedback mode of simple pure circuit, the feedback mode is defaulted at factory, that is, the fixed initial state is normally open or normally closed, and the feedback mode cannot be adjusted according to actual conditions. Practical new type content

[0006] In order to solve the problems in the prior art, the utility model provides a kind of SPD remote signaling feedback assembly, thermal tripping structure and SPD structure, by optimizing feedback structure and principle, so that the feedback mode can be adjusted when product is shipped, to have better adaptability.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] Firstly, the utility model provides a kind of SPD remote signaling feedback assembly, is set in SPD structure and is set in SPD structure in linkage and forms remote signaling signal when action;Including the connecting sheet of electric connection external remote signaling circuit, at least one adjusting connecting sheet of the connecting sheet including relative SPD structure position adjustable;

[0009] Still including the compression spring part linked with thermal tripping structure, the compression spring part has normally open end and normally closed end, one end of the adjusting connecting sheet is fixed in SPD structure and is connected with the remote signaling circuit inserted from outside, the other end is limited by normally open end or normally closed end and has the active trend of changing connection state with the normally closed connection state or normally closed disconnect state of the other connecting sheet, and two connecting sheets are connected with external remote signaling circuit to form a loop.

[0010] It should be noted that the SPD structure in the embodiment has a port connected to the external remote signaling circuit, and the connecting sheet is arranged in the port, but the SPD structure itself has a connection terminal connected to the external circuit, and the embodiment does not limit the need to additionally provide a remote signaling port on the SPD structure, as long as the conductor of the external remote signaling circuit can be connected to the connecting sheet of the remote signaling feedback assembly provided in the SPD structure.

[0011] The embodiment is not limited to arranging the remote signaling feedback assembly in the interior of the SPD structure, but can be arranged as an independent structure outside the SPD structure and linked with the thermal tripping structure provided in the SPD structure.

[0012] The linkage refers to that the thermal trip structure drives the connection piece in the remote feedback assembly to act when the thermal trip structure acts. The above content defines that the adjusting connection piece and the compression spring part achieve limited contact, and the compression spring part acts at the same time when the thermal trip structure acts. The adjusting connection piece and the SPD structure have a position-adjustable relationship, that is, the adjusting connection piece and the SPD structure have a plurality of limited connection positions, and once the adjusting connection piece is set and connected with the SPD structure, the adjusting connection piece forms a fixed structure. At this time, one end of the adjusting connection piece contacted by the compression spring part forms a limit, that is, the position of the adjusting connection piece itself without external force is different from the position limited by the compression spring part, that is, the adjusting connection piece has a movement tendency, and the movement tendency can be provided by the elastic force generated by the elastic deformation of the adjusting connection piece itself or by external structure. Once the thermal trip structure acts, the compression spring part acts, and at this time, one end of the adjusting connection piece loses the limiting force and moves, so that the connection relationship between the adjusting connection piece and the other connection piece is changed, that is, the normally closed state is changed into the normally open state or the normally open state is changed into the normally closed state.

[0013] In the embodiment, at least two connection pieces are included as two conductors connected with external circuits. The connection relationship between the two conductors is changed by the action of the thermal trip structure, so that an electric signal is formed by the associated external remote circuit, that is, the power-on state is changed into the power-off state or the power-off state is changed into the power-on state, so that the signal feedback effect is achieved. The difference from the prior art is that the compression spring part has two end parts, and the normally closed / normally open initial state is adjusted by the position relationship between the two end parts and the adjusting connection piece.

[0014] It should be further explained that the thermal trip structure mentioned in the embodiment is not limited to only connecting the thermal trip structure. As long as the action mechanism can disconnect the internal circuit of the SPD structure, it belongs to the limited range of the application.

[0015] In combination with the first aspect, the utility model provides a first kind of implementation of first aspect, the movement tendency of the adjusting connection piece is provided by the elastic force generated by the normally open end part or the normally closed end part of the compression spring part and the SPD structure compressing the adjusting connection piece to deform.

[0016] In combination with the first aspect, the utility model provides a second kind of implementation of first aspect, further includes the independent shell set outside the SPD structure, the shell has the jack for the external remote circuit to insert, the connection piece is arranged in the jack;

[0017] The jack provided with the adjusting connection piece is provided with the normally closed mounting position and the normally open mounting position for limiting the movement of one end of the adjusting connection piece. One end of the adjusting connection piece is arranged on the normally closed mounting position and keeps the initial connection state with the other connection piece, and one end of the adjusting connection piece is arranged on the normally open mounting position and keeps the initial disconnection state with the other connection piece.

[0018] The housing has a movable spring part connected inside, the movable spring part has an end part extending into the SPD structure and linked with the thermal trip structure, one end of the adjusting connecting piece is arranged on a normally closed mounting position and the other end is limited by the normally closed end part of the movable spring part and has a movable tendency of disconnecting, one end of the adjusting connecting piece is arranged on a normally open mounting position and the other end is limited by the normally open end part of the movable spring part and has a movable tendency of connecting.

[0019] In combination with the first aspect, the utility model provides a third implementation mode of the first aspect, the SPD structure has a mounting connecting piece and a jack for inserting an external remote signaling circuit, the normally closed mounting position and the normally open mounting position for limiting the one end of the adjusting connecting piece are arranged in the jack for setting the adjusting connecting piece, the one end of the adjusting connecting piece is arranged on the normally closed mounting position and keeps the initial connecting state with the other connecting piece, the one end of the adjusting connecting piece is arranged on the normally open mounting position and keeps the initial disconnecting state with the other connecting piece.

[0020] The movable spring part is movably connected with the SPD structure, one end of the adjusting connecting piece is arranged on the normally closed mounting position and the other end is limited by the normally closed end part of the movable spring part and has a movable tendency of disconnecting, one end of the adjusting connecting piece is arranged on the normally open mounting position and the other end is limited by the normally open end part of the movable spring part and has a movable tendency of connecting.

[0021] In combination with the third implementation mode of the first aspect, the utility model provides a fourth implementation mode of the first aspect, the movable spring part is a fixed structure arranged on the thermal trip structure.

[0022] The second aspect provides a thermal trip structure, which adopts the SPD remote signaling feedback assembly in the above, and comprises a tripping slider and a spring.

[0023] In combination with the second aspect, the utility model provides a first implementation mode of the second aspect, the movable spring part is a protruding structure arranged on the tripping slider, and the movable spring part has a normally closed end part and a normally open end part in two directions.

[0024] The third aspect further provides an SPD structure, which is provided with the thermal trip structure in the above, and comprises a shell, the shell has an adjusting jack and a fixed jack, and the adjusting jack is provided with an adjusting connecting piece.

[0025] The shell has a support, and the spring is compressed between the tripping slider and the support.

[0026] In combination with the third aspect, the utility model provides third aspect's first kind of implementation, two adjusting grooves that have as the normally open installation site or normally closed installation site in the adjusting jack, the protruding that has with adjusting groove card joint cooperation is on the adjusting connecting piece.

[0027] In combination with the third aspect, the utility model provides third aspect's second kind of implementation, the fixed connecting piece is equipped in the fixed jack, the fixed connecting piece and adjusting connecting piece are drawn out fixed jack and adjusting jack and are connected in the inside of casing.

[0028] The utility model has the advantages of:

[0029] (1) the utility model discloses a connecting piece structure, realize the connection outside remote signaling circuit and realize the signal feedback of the on-off state in the SPD structure to the outside through the connection state of connecting piece, simple structure, low cost, and easy to set up high stability.

[0030] (2) the utility model discloses the structural design of adjusting connecting piece, cooperate independently set up remote signaling assembly shell or the design mode of built-in SPD structure, can provide two installation modes for adjusting connecting piece, make single product have multifunctional effect, be applicable to different remote signaling circuit condition's use, when arranging, adjusting connecting piece can be set up on the corresponding position according to demand, thereby the connection state between it and another connecting piece can be adjusted in the initial state, and through the external compression spring part realizes the limit, and loses the activity change initial state after the action of thermal trip structure, thereby reach the effect of remote signaling feedback. DRAWINGS

[0031] Figure 1 It is the external structure axonometric drawing of the SPD structure in the utility model embodiment;

[0032] Figure 2 It is the internal structure axonometric drawing of the SPD structure in the utility model embodiment;

[0033] Figure 3 It is the plane schematic view of the normally open scheme's SPD thermal trip structure when not acting in the SPD structure in the utility model embodiment;

[0034] Figure 4 It is the plane schematic view of the normally open scheme's SPD thermal trip structure when acting in the SPD structure in the utility model embodiment;

[0035] Figure 5 It is the plane schematic view of the normally closed scheme's SPD thermal trip structure when not acting in the SPD structure in the utility model embodiment;

[0036] Figure 6is a plane schematic view of the SPD thermal trip structure action in the closed scheme of the SPD structure in the embodiment of the utility model;

[0037] Figure 7 is the plane view of the SPD structure and base assembly in the embodiment of the utility model;

[0038] Figure 8 is the schematic view of the remote signaling circuit and the remote signaling assembly of the SPD structure in the embodiment of the utility model.

[0039] In the figure: 1-adjusting jack, 2-fixed jack, 3-fixed connecting piece, 4-adjusting connecting piece, 5-trip slider, 501-pressing spring part, 6-spring, 7-stand, 8-adjusting groove, 9-housing, 10-plug, 11-indication window, 12-cover. DETAILED DESCRIPTION

[0040] The utility model will be further explained in combination with the specific embodiments and the accompanying drawings.

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0043] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0044] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] In addition, if the terms "horizontal", "vertical" and the like appear in the description of the present application, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] Embodiment 1:

[0048] The present embodiment discloses an SPD remote signaling feedback assembly, which is adapted to an existing SPD structure with a thickness of 6 mm in a separate structure, or is adapted to an existing SPD structure by being arranged in the SPD structure and cooperating with the tripping structure inside the SPD structure to realize linkage feedback.

[0049] It should be noted that the remote signaling feedback assembly mainly changes the connection state between the two conductive bodies, thereby changing the on-off state of the connected remote signaling circuit, to achieve feedback of the on-off signal of the circuit in the SPD structure. The entire SPD remote signaling feedback assembly does not include an external remote signaling circuit, and can be adapted to various external circuit forms. The simplest scheme is to connect a power loop, and a prompt device, i.e. a simplest LED lamp, can be arranged on the loop. The original always-on or always-off state is changed, so that the remote maintenance personnel can determine that tripping has occurred, and determine the specific tripped SPD structure through pre-numbering, to facilitate timely disposal. Or a signal module is arranged on the loop, and the remote always obtains a signal to signal disappearance, or suddenly receives a signal, which is regarded as tripping and breaking of the corresponding SPD structure, to achieve more remote remote signaling feedback effect.

[0050] The problem to be solved by the embodiment is that the existing SPD structure provided with a remote signaling component is generally a 18mm shell 9 structure, which has a certain internal space, facilitates the setting of a remote signaling component with a signal transmission chip, and has high cost and poor stability. For some more complex setting environment, it cannot meet the setting requirements. Different from the existing optical detection on-off mode, the scheme of the embodiment changes the structure state mechanically, thereby having lower cost and higher reliability.

[0051] Specifically, as an independent structure, the SPD remote signaling feedback component includes a shell, the overall thickness of the shell is the same as the thickness of the adapted SPD structure. The shell is provided with two insertion holes, and each insertion hole is provided with a metal connecting piece as a wiring terminal to connect the external remote signaling circuit. In one of the insertion holes, a larger space is provided for setting an adjusting connecting piece 4, and two mounting positions, i.e., a normally open mounting position and a normally closed mounting position, are provided in the insertion hole, and the two mounting positions extend along the direction in which the external conductor is inserted into the insertion hole. The adjusting connecting piece 4 itself is a bent metal sheet structure, one end or part of which is in the insertion hole and is set in any mounting position when it is shipped.

[0052] The shell also has a connecting space communicating with the two insertion holes, and the connecting pieces in the two insertion holes can pass out of the insertion holes and realize the connection of the end portions in the connecting space. One of the insertion holes is provided with a fixed connecting piece 3, which remains in a limited fixed state after being set, and the end portion of the fixed connecting piece 3 in the connecting space remains in a fixed state. The extending end portion of the adjusting connecting piece 4 changes the connection relationship between the adjusting connecting piece 4 and the fixed connecting piece 3 according to the mounting position of the adjusting connecting piece 4 in the insertion hole. In the normally open mounting position, the extending end portion of the adjusting connecting piece 4 and the extending end portion of the fixed connecting piece 3 remain disconnected, i.e., there is a certain interval therebetween. In the normally closed mounting position, the extending end portion of the adjusting connecting piece 4 and the extending end portion of the fixed connecting piece 3 remain in contact.

[0053] Further, the above state is the initial state of the two connecting pieces, and the adjusting connecting piece 4 itself also has a tendency to move, i.e., it will partially displace relative to the shell under the action of removing the external force, so that the connection state between the adjusting connecting piece 4 and the fixed connecting piece 3 changes. The so-called tendency to move is generated by the external setting of a spring structure or by the deformation of the adjusting connecting piece 4 itself. The shell also has a compression spring portion 501, which can abut against the extending end portion of the adjusting connecting piece 4 in the initial state to limit the movement of the extending end portion and maintain the initial connection state between the adjusting connecting piece 4 and the fixed connecting piece 3.

[0054] In the present embodiment, the compression spring part 501 is provided as a separate structure within the housing, which extends out of the housing and is linked with the provided tripping structure within the SPD structure. The entire housing of the SPD remote signaling feedback assembly in the present embodiment is mounted on the SPD structure, and can be fixed by means of insertion, clamping or clamping, etc. The compression spring part 501 can be inserted into the SPD structure through the terminal of the SPD structure and linked with the provided tripping structure, and the linkage mode includes direct fixed connection and indirect transmission connection. In some embodiments, the linkage effect can be achieved without changing the original SPD structure by providing internal and external magnetic attraction structures.

[0055] When the tripping structure in the SPD structure fails due to deterioration of the pressure-sensitive resistor and triggers a protective tripping action, the linked compression spring part 501 simultaneously or delayedly acts, causing the displacement of the extended end of the adjusting connecting piece 4, resulting in the change of the connection state between the adjusting connecting piece 4 and the fixed connecting piece 3, so that the external remote signaling circuit connected produces a changed electrical signal, achieving the feedback effect.

[0056] As a scheme provided in the SPD structure, a mounting position of a normally open and normally closed is provided in the housing 9 of the SPD structure, and a separate remote signaling circuit is connected through the terminal of the SPD structure, or a separate jack is provided on the housing 9 of the SPD structure as a part of the external remote signaling circuit. As in the above embodiment, a connection space is formed in the SPD structure, and the compression spring part 501 in the present scheme can be linked with the tripping structure as a separate structure, or directly as an integral structure of the tripping structure. When it is an integral structure of the tripping structure, the compression spring part 501 has two end parts, i.e. a normally open end part and a normally closed end part.

[0057] In the connection space, there is a gap between the fixed connecting piece 3 in the normally open state and the adjusting connecting piece 4, and the normally open end part abuts against the adjusting connecting piece 4 and is between the fixed connecting piece 3 and the adjusting connecting piece 4, thereby forming a block to avoid the connection of the two connecting pieces.

[0058] In the normally closed state, the fixed connecting piece 3 itself contacts the adjusting connecting piece 4, and since the initial position of the tripping structure cannot be moved, the adjusting connecting piece 4 can only be moved to correspond to the normally closed end part in the opposite direction, and the normally closed end part presses the adjusting connecting piece 4 to maintain the connection state with the fixed connecting piece 3.

[0059] Further, with reference to Figures 1-6The SPD remote signaling feedback assembly arranged inside the SPD structure is provided with two parallel insertion holes on the shell 9 of the SPD structure, the portions of the two connecting pieces inside the insertion holes are of the same shape, both have a bend, the end face of the bend towards the opening of the insertion hole is a bevel, and the inside of the bend is supported and limited by the column protruding inside the insertion hole. When the conductor of the external remote signaling circuit is inserted into the insertion hole, it can abut against the bevel of the connecting piece to make it bend inward around the column, and the deformation force of the connecting piece itself forms a compression force on the inserted conductor to maintain the stability of the connection.

[0060] The insertion hole and the shell 9 have a communication opening, and both connecting pieces pass out of the corresponding communication openings and form an initial connection relationship in the connection space.

[0061] Referring to Figure 3 The fixed connecting piece 3 and the adjusting connecting piece 4 are made of the same material and structure, which is beneficial to reduce the cost. The left side is the fixed connecting piece 3, and the right side is the adjusting connecting piece 4. The fixed connecting piece 3 is installed in a lower position compared to the adjusting connecting piece 4, while the adjusting connecting piece 4 is in a normally open installation position and has a gap with the fixed connecting piece 3. The end portion protruding from the insertion hole is abutted by the compression spring portion 501 to bend upward, thereby having a downward movement tendency. After the compression spring portion 501 removes the limiting effect, the end portion of the adjusting connecting piece 4 rotates downward to adhere to the fixed connecting piece 3.

[0062] Specifically, both the fixed connecting piece 3 and the adjusting connecting piece 4 have two bending points. One bending point is as shown in the above content, which is inside the insertion hole to facilitate connection and limiting of the conductor of the external remote signaling circuit. The other bending point is in the connection space, and a column is arranged in the shell 9 of the SPD structure to limit the second bending portion of the fixed connecting piece 3. Meanwhile, another column is arranged to abut against the end of the fixed connecting piece 3 to make it upward, and the two columns limit from two directions to make the fixed connecting piece 3 form a certain bending deformation after being fixed, thereby improving the connection stability between the fixed connecting piece 3 and the shell 9.

[0063] As for the adjusting connecting piece 4, only a column is arranged in the corresponding insertion hole, and no column is arranged in the shell 9 to limit its position. Only the compression spring portion 501 at the end is used to abut against and compress the adjusting connecting piece 4, and the insertion hole inner wall limits the adjusting connecting piece 4 to achieve the fixing effect. When the compression spring portion 501 abuts against and compresses the adjusting connecting piece 4, the bending point of the adjusting connecting piece 4 outside the insertion hole bends, thereby making it have a downward movement tendency through the elastic force generated by the deformation.

[0064] Referring to Figure 3 and Figure 5It can be seen that the adjustment connecting piece 4 initially in the normally open state is located in the upper part of the jack, and when installing, the adjustment connecting piece 4 needs to be bent downward around the second bending point, so that it will abut against the fixed connecting piece 3 in the natural state, and when abutting, it also has a downward movement trend. In this way, by bending it upward and abutting against the normally open end of the compression spring part 501, it has a good downward movement trend.

[0065] Referring to Figure 4 and Figure 6 It can be seen that the adjustment connecting piece 4 initially in the normally closed state is located in the lower part of the jack, that is, the adjustment connecting piece 4 is displaced downward compared with the normally open state, so that its initial state is closer to the fixed connecting piece 3. Similarly, when installing, it is bent upward, so that it will be raised upward away from the fixed connecting piece 3 in the unstressed state. At this time, by abutting it against the normally closed end of the lower part of the compression spring part 501, it has a good disengagement movement trend.

[0066] The above embodiment is to make it have a large deformation by pre-bending, so as to realize a strong movement trend by compression of the compression spring part 501, thereby realizing a more stable tripping feedback effect. In some embodiments, in the initial state, the adjustment connecting piece 4 in the normally open state is arranged in the lower part of the jack, that is, in the installation position shown in Figure 4 and Figure 6 , since the adjustment connecting piece 4 is overall downward at this time, it can be as close as possible to the fixed connecting piece 3 in the initial state. At this time, the adjustment connecting piece 4 does not need to be pre-bent, but only needs to be moved upward and kept in the elastic bending state upward by the upper end of the compression spring part 501, so as to have a downward movement trend. Similarly, as the initial state of the normally closed state, the adjustment connecting piece 4 is moved upward, so that it cannot contact the fixed connecting piece 3 under the action of external force. Only by the normally closed end of the downward compression spring part 501, it is pressed downward.

[0067] Further, the embodiment also provides a thermal trip structure adopting the SPD remote signaling feedback assembly in the above scheme. It needs to be noted that the SPD remote signaling feedback assembly in the above scheme needs to cooperate with the tripping structure in the SPD structure, but is not limited to a specific tripping form. As long as it has a tripping displacement, it can adapt to the remote signaling feedback assembly.

[0068] Specifically, referring to Figure 3 , the thermal trip structure includes a tripping sliding block 5, the shell 9 of the SPD structure has a protruding support 7 structure, the tripping sliding block 5 has a rod member extending toward the support 7 structure, and the thermal trip structure further includes a spring 6 sleeved on the rod member and abutting against the support 7 to form contact.

[0069] The upper part of the shell 9 is provided with a sliding rail, and the tripping sliding block 5 is matched with the sliding rail to realize the reciprocating linear motion in the horizontal direction in the drawing. The lower part of the tripping sliding block 5 is provided with a conductive block, which is connected to the internal circuit of the SPD structure by means of low-temperature soldering. When the tripping sliding block 5 is in the Figure 3 position during the connection, the spring 6 is compressed and gives the tripping sliding block 5 a moving tendency to the right. Once the low-temperature soldering connection is heated and melted to lose the limiting effect, the tripping sliding block 5 immediately slides to the right, thereby driving the compression spring part 501 structure to move to the right, so that the adjusting connecting piece 4 loses the limiting motion and changes the connection state with the fixed connecting piece 3, and generates a feedback signal to feedback the action of the thermal trip structure.

[0070] The compression spring part 501 is a protruding structure arranged on the left side of the tripping sliding block 5. The structure has an oval bulging end, the upper part of which is a normally open end, and the lower part is a normally closed end. The two oppositely directed end parts realize the initial position setting of the adjusting connecting piece 4.

[0071] Further, the embodiment also discloses an SPD structure provided with the SPD remote signaling feedback assembly and the thermal trip structure in the above scheme.

[0072] Specifically, it includes a shell 9, one side of the shell 9 is provided with an opening for conveniently arranging internal parts, and a cover 12 is buckled on the opening. The thickness of the shell 9 is 6 mm, and Figure 7 referring to the drawings, the shell 9 is arranged on the base in a pluggable structure, and less than two rotating clamping pieces are arranged on the two sides of the shell 9, which are used for detachable connection with the base.

[0073] The top of the shell 9 has two insertion holes, namely an adjusting insertion hole 1 and a fixed insertion hole 2. The fixed insertion hole 2 is provided with a fixed connecting piece 3, and the adjusting insertion hole 1 is provided with an adjusting connecting piece.

[0074] Referring to Figures 3-6 , the volume of the adjusting insertion hole 1 is greater than that of the fixed insertion hole 2. A protruding strip arranged in the vertical direction in the drawing is arranged in the adjusting insertion hole 1. Two adjusting grooves 8 are arranged on the protruding strip, and a protruding structure matched with the adjusting grooves 8 is arranged on the adjusting connecting piece 4. When the product is shipped, the adjusting connecting piece 4 is arranged in the normally open installation position, that is, the protruding part of the adjusting connecting piece 4 is arranged in the upper adjusting groove 8. The user removes the cover 12 according to the need, takes out the adjusting connecting piece 4, and arranges it in the lower adjusting groove 8, and then bends it to abut against the lower part of the compression spring part 501, so as to complete the adjustment from the normally open state to the normally closed state.

[0075] The lower part of the SPD structure is a circuit board, and the circuit board is provided with a piezoresistor and other circuit structures. In the shipped state of the product, a plug 10 made of a high polymer material is arranged in the two insertion holes, and the plug 10 is removed during use.

[0076] Referring to Figure 8 Wherein a number of SPD structures are shown side by side after the connection relationship with the external remote signaling circuit is directly connected, it can be seen that the adjacent SPD structures are connected in series through the clamping needle provided, and the last two SPD structures are connected to the positive and negative poles of the external remote signaling circuit, so as to realize the series connection of the remote signaling end of a plurality of side-by-side SPD structures. In this way, all SPD remote signaling feedback components in the SPD structure are in a normally closed initial state, so that the entire series-connected circuit has a continuous electrical signal or an intermittent electrical signal. Once one of the thermal tripping structures is actuated to form an open circuit, the entire series-connected remote signaling circuit is disconnected, and the corresponding information is obtained after remote feedback to perform corresponding maintenance.

[0077] Referring to Figure 3 The entire SPD structure is also provided with an indication window 11, that is, an opening is provided on the right side of the drawing. The opening is provided with a light-transmitting structure. When the tripping slider 5 is not actuated, a color is seen through the indication window 11. When the tripping slider 5 is actuated to block the inside of the indication window 11, the color change can be observed from the outside to know that the tripping slider 5 has been actuated. Referring to the above-mentioned scheme of series connection of multiple rows of SPD structures, when it is determined that the SPD structure in this part has tripping, the tripped SPD structure can be quickly found on site through the indication window 11.

[0078] The utility model is not limited to the above-optional implementation, and anyone can derive other various forms of products under the inspiration of the utility model. The above specific embodiments should not be understood as limiting the protection scope of the utility model, and the protection scope of the utility model should be defined in the claims, and the specification can be used to explain the claims.

Claims

1. An SPD telesign feedback assembly disposed within an SPD structure and operatively associated with a thermal trip assembly disposed within the SPD structure to form a telesign signal upon actuation of the thermal trip assembly; characterized by: The connecting piece includes at least one adjusting connecting piece (4) which is adjustable relative to the position of the SPD structure. The adjusting connecting piece (4) is fixed at one end in the SPD structure and connected with the externally inserted remote signaling circuit, and at the other end is limited by the normally open end or the normally closed end of the compression spring part (501) to keep a normally closed connection state or a normally closed disconnected state with the other connecting piece and has an active tendency to change the connection state.

2. The SPD remote signaling feedback assembly of claim 1, wherein: The active tendency of the adjusting connecting piece (4) is provided by the elastic force generated by the compression of the normally open end or the normally closed end of the compression spring part (501) to the adjusting connecting piece (4).

3. The SPD remote signaling feedback assembly of claim 1, wherein: The independent shell is provided outside the SPD structure, and the shell has a plug hole for inserting the external remote signaling circuit, and the connecting piece is arranged in the plug hole. The normally closed mounting position and the normally open mounting position are arranged in the plug hole provided with the adjusting connecting piece (4) to limit the movement of one end of the adjusting connecting piece (4), and one end of the adjusting connecting piece is arranged in the normally closed mounting position to keep an initial connection state with the other connecting piece, and one end of the adjusting connecting piece is arranged in the normally open mounting position to keep an initial disconnected state with the other connecting piece. The compression spring part (501) is movably connected in the shell, and the compression spring part (501) has an end part extending into the SPD structure and being linked with the thermal trip structure, one end of the adjusting connecting piece (4) is arranged in the normally closed mounting position, and the other end is limited by the normally closed end of the compression spring part (501) and has an active tendency to disconnect, and one end of the adjusting connecting piece (4) is arranged in the normally open mounting position, and the other end is limited by the normally open end of the compression spring part (501) and has an active tendency to connect.

4. The SPD remote signaling feedback assembly of claim 1, wherein: The compression spring part (501) is movably connected in the shell, and the compression spring part (501) has an end part extending into the SPD structure and being linked with the thermal trip structure, one end of the adjusting connecting piece (4) is arranged in the normally closed mounting position, and the other end is limited by the normally closed end of the compression spring part (501) and has an active tendency to disconnect, and one end of the adjusting connecting piece (4) is arranged in the normally open mounting position, and the other end is limited by the normally open end of the compression spring part (501) and has an active tendency to connect. The compression spring part (501) is a fixed structure arranged on the thermal trip structure.

5. The SPD remote signaling feedback assembly of claim 4, wherein: The SPD remote signaling feedback assembly in one of the above claims 5 comprises a trip slider (5) and a spring (6), the trip slider (5) is movably connected with the SPD structure, the trip slider (5) has a conductive part connected in series in the internal circuit of the SPD structure by low-temperature soldering, and the spring provides an active tendency of the trip slider (5) to disconnect the internal circuit contact by driving the conductive part.

6. A thermal trip structure, characterized by: ​ 7. A thermal trip structure according to claim 6, wherein: The compression spring part (501) is a protruding structure arranged on the tripping slider (5), and the compression spring part (501) has a normally closed end and a normally open end in two directions.

8. An SPD structure, characterized by: The thermal tripping structure in one of claims 6 or 7 is provided with a shell (9) having an adjusting insertion hole (1) and a fixing insertion hole (2), and the adjusting insertion hole (1) is provided with an adjusting connecting piece (4). The shell (9) is provided with a support (7), and the spring (6) is compressed between the tripping slider (5) and the support (7).

9. The SPD structure of claim 8, wherein: The adjusting insertion hole (1) is provided with two adjusting grooves (8) as normally open installation positions or normally closed installation positions, and the adjusting connecting piece (4) is provided with protrusions matched with the adjusting grooves (8).

10. The SPD structure of claim 8, wherein: The fixing insertion hole (2) is provided with a fixing connecting piece (3), and the fixing connecting piece (3) and the adjusting connecting piece (4) pass through the fixing insertion hole (2) and the adjusting insertion hole (1) and are connected inside the shell (9).

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