SPD short-circuit pin
By designing the SPD shorting pin, the problems of low efficiency and poor stability of SPD structure remote signaling port serial connection are solved, realizing efficient and stable remote signaling circuit connection and improving the safety and reliability of electrical system.
Patent Information
- Application Number
- CN202520160174.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The existing remote signaling port serial connection method of SPD structure is inefficient and unstable, poses security risks, and is difficult to achieve efficient and stable connection.
Design an SPD shorting pin, including a pin body made of insulating material and a conductor, for forming a series relationship between the remote signaling sockets of adjacent SPD structures arranged side by side, and achieving a stable connection by inserting the pin head into the socket.
This improved the installation efficiency and stability of the SPD structure, ensured the reliable connection of the remote signaling circuit, and reduced safety hazards.
Smart Images
Figure CN223809282U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to circuit structure technical field, concretely relates to a SPD short connects a needle. BACKGROUND
[0002] SPD surge protector is a device used to protect electrical and electronic equipment from transient overvoltage (such as lightning-induced overvoltage, operating overvoltage, etc.) damage. Its working principle is to guide the overvoltage to the ground in a very short time, thereby avoiding the damage of the equipment due to overvoltage.
[0003] SPD is usually installed on the power supply line or signal line, and when transient overvoltage occurs in the line, it can quickly conduct and limit the overvoltage within 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, and when the voltage exceeds its threshold, the resistance drops sharply, forming a low resistance path, allowing the overvoltage to be discharged to the ground through the SPD; the GDT is open under normal conditions, and when the voltage reaches its breakdown voltage, it will be broken down to form a conductive channel; the TVS utilizes 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 self-aging, etc., the tripping structure will act. The tripping structure can be mechanical tripping or thermal tripping, etc., for example, mechanical tripping is through internal mechanical device, when detecting that the performance of SPD exceeds the normal range, the mechanical device will act, disconnecting SPD from the circuit, avoiding potential electrical safety hazards such as overheating, short circuit, etc. caused by SPD failure. Thermal tripping is based on the temperature change of SPD, when the internal elements produce excessive heat due to overcurrent, etc., the thermal tripping device will trigger, cutting off SPD from the circuit. In this way, SPD can be prevented from becoming a safety hazard after failure, ensuring the continuous and stable operation of the entire electrical system, and also facilitating users to find the fault state of SPD in time, replacing or repairing it, improving the safety and reliability of the electrical system.
[0005] In order to realize the series connection of the remote signaling ports of the plurality of groups of SPD structures, the existing mode is to set a plurality of segments of wires on site, but the SPD structure is relatively thin and has a small gap, and if the connection is realized in the mode of flying wires, the efficiency is relatively low and the stability is relatively poor, and the non-standard flying wire mode will cause a safety hazard. Practical new type content
[0006] In order to solve the problems existing in the prior art, the utility model provides a kind of SPD short plug pin, and the series short connection of the remote signaling jack of the plurality of side-by-side equidistantly arranged SPD structures is installed with higher efficiency and stability.
[0007] The technical scheme adopted by the utility model is as follows:
[0008] In the first aspect, the utility model provides a kind of SPD short plug pin, which is used to form a series connection between the jacks of adjacent SPD structures arranged side by side and connected to an external remote signaling circuit, comprising a plug pin body made of insulating material and a conductor, the conductor is wrapped in the plug pin body and exposes two plug pin heads inserted into the jacks of adjacent SPD structures respectively.
[0009] In combination with the first aspect, the utility model provides a first embodiment of the first aspect, the plug pin body comprises a handle for easy gripping.
[0010] In combination with the first aspect, the utility model provides a second embodiment of the first aspect, the plug pin body is provided with a conical protrusion at the position where the conductor passes out, for clamping and limiting with the inner wall of the jack.
[0011] In combination with the first aspect or the plurality of embodiments of the first aspect, the utility model provides a third embodiment of the first aspect, the plug pin body comprises an upper part and a lower part that are mutually buckled, the upper part has a recess for accommodating the lower part, the recess has a clamping groove, and the surface of the lower part embedded in the recess has a clamping block corresponding to the clamping groove.
[0012] In combination with the third embodiment of the first aspect, the utility model provides a fourth embodiment of the first aspect, the inner wall of the recess has two groups of clamping grooves symmetrically arranged relative to the inner side surface, and the opposite end surface of the surface of the lower part embedded in the recess is provided with two groups of clamping blocks corresponding to the clamping grooves.
[0013] With the third implementation manner of the first aspect, the utility model provides the fifth implementation manner of the first aspect, the lower part has two openings, the conductor passes through the opening and leaks out two pin heads from the side end face of the embedded groove, the conductor has the part that remains in the groove when the lower part is buckled with the upper part.
[0014] With the fifth implementation manner of the first aspect, the utility model provides the sixth implementation manner of the first aspect, the conductor is the U type conductor that one metal pole piece is bent, the end part of the lower part is equipped with the waist type groove that contains the U type conductor in the embedded groove, the opening is perpendicularly arranged in two end heads of the waist type groove respectively.
[0015] The utility model has the advantages of:
[0016] (1) the utility model discloses simple structure and lower cost, and the jack of the remote signaling of SPD structure is provided with the corresponding pin head, and the pin body of insulating material can be handheld operation, and can realize the series connection of the remote signaling jack of adjacent SPD structure after the SPD structure is arranged on the row frame, which is convenient and stable.
[0017] (2) the pin body of the utility model is buckled by two parts, and this design can facilitate the installation of the conductor structure, and since the structure is used for a long time, if the conductor has a problem, the conductor can be directly disassembled and replaced. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the plane schematic view of the short circuit pin inserted in the SPD structure in the utility model embodiment;
[0019] Figure 2 It is the axonometric drawing of the short circuit pin inserted in the SPD structure in the utility model embodiment;
[0020] Figure 3 It is the split plane schematic view of the short circuit pin in the utility model embodiment;
[0021] Figure 4 It is the assembly plane schematic view of the short circuit pin in the utility model embodiment;
[0022] Figure 5 It is the split axonometric schematic view of the short circuit pin in the utility model embodiment;
[0023] Figure 6 It is the assembly axonometric schematic view of the short circuit pin in the utility model embodiment;
[0024] Figure 7 It is the plane view of the SPD structure and base assembly in the utility model embodiment;
[0025] 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.
[0026] In the drawing: 1- the plug pin body, 2- the SPD structure, 3- the jack, 4- the handle, 5- the upper part, 6- the clamping groove, 7- the U-shaped conductor, 8- the clamping block, 9- the lower part. DETAILED DESCRIPTION
[0027] The utility model will be further explained in combination with the drawings and specific embodiments.
[0028] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described 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.
[0029] 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 skilled in the art without making creative efforts belong to the scope of protection of the present application.
[0030] It should be noted that: similar signs 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.
[0031] In the description of the present application, it should be explained that if the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship when the product of the application is usually placed, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on 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 for differentiation, and cannot be understood as indicating or implying relative importance.
[0032] 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 its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0033] In the description of the present application, it should be further explained that, unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood broadly, for example, 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 indirectly connected through an intermediate medium, or the communication 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.
[0034] Embodiment 1:
[0035] The present embodiment discloses a SPD short plug pin for being arranged between at least two SPD structures 2, achieving the effect of interval connection.
[0036] It should be noted that the SPD structure 2 in the present embodiment is a 6mm thickness ultra-thin SPD structure 2 as shown in Figure 7 , which is generally arranged side by side on a rack, and the wiring terminals on both sides are connected to independent circuits to achieve surge discharge protection.
[0037] The SPD structure 2 adapted to this short plug pin has a pressure sensitive resistor as the main functional circuit connected to the circuit to be protected, and a mechanical tripping structure is also provided in the SPD structure 2, which can be triggered by heat or other forms when the pressure sensitive resistor deteriorates and causes the main circuit to form a short circuit state, and at the same time, the internal remote signaling circuit is changed through the linkage of the remote signaling feedback assembly provided in the SPD structure 2, so as to change the on-off state of the external remote signaling circuit, and achieve the feedback effect.
[0038] The above-mentioned remote signaling feedback assembly mainly changes the connection state between the two conductive bodies, so as to change the on-off of the connected remote signaling circuit, so as to feedback the circuit on-off signal in the SPD structure 2. The whole SPD remote signaling feedback assembly does not include the external remote signaling circuit, and can be adapted to various external circuit forms. In the present embodiment, the simplest scheme is adopted, referring to Figure 8 , a plurality of SPD structures 2 are connected in series in a power loop, and a prompt device, i.e. the simplest LED lamp, can be provided on the loop, and the original always-on or always-off state is changed, so that the remote maintenance personnel can determine that the tripping occurs, and determine the specific tripped SPD structure 2 through the pre-numbering, so as to facilitate timely disposal. Or a signal module is provided on the loop, and the remote signal is always acquired to the signal disappears, or suddenly receives the signal, which is regarded as the tripping of the corresponding SPD structure 2, and the more remote remote signaling feedback effect can be achieved.
[0039] Referring to Figure 1 and Figure 2, the SPD structure 2 has a shell, and two insertion holes 3 are arranged on the shell, the insertion holes 3 are used for connecting external conductors to form external remote signaling circuits, and once the SPD structure 2 is tripped, the connection state of the conductors between the two insertion holes 3 of the single SPD structure 2 changes. In the embodiment, the internal remote signaling circuit of each SPD structure 2 is in a normally closed setting mode, that is, the conductors in the two insertion holes 3 are in a conduction state inside the SPD structure 2, and Figure 1 and Figure 2 only show the way in which the SPD short-circuiting insertion pins are inserted into the insertion holes 3, and the actual connection mode is shown in Figure 8 , which is arranged on two adjacent SPD structures 2. The single SPD structure 2 is provided with an SPD short-circuiting insertion pin when it is shipped, and the SPD short-circuiting insertion pin is inserted into the two insertion holes 3 of the single SPD structure 2 in the mode shown in Figure 1 and Figure 2 , so as to facilitate packaging and transportation.
[0040] Specifically, the SPD short-circuiting insertion pin in the embodiment includes an insertion pin body 1 made of insulating material, and a conductor is further arranged in the insertion pin body 1, the conductor is arranged in an integrated structure and has two insertion pin heads that pass out of the insertion pin body 1, and the two insertion pin heads are inserted into two corresponding insertion holes 3 of adjacent SPD structures 2 respectively to realize interval connection. Referring to Figure 8 , a plurality of adjacent SPD structures 2 in the middle are connected in series through the short-circuiting insertion pins arranged alternately.
[0041] In an embodiment, in order to save costs, the insertion pin body 1 is an integrated injection molding structure, the conductor is directly fixed in a mold, and then an end part convenient for fingers to grab is formed by wrapping the outside of the conductor through injection molding or the like.
[0042] In another embodiment, referring to Figures 3-6 , a detachable insertion pin body 1 structure is disclosed.
[0043] Specifically, the insertion pin body 1 includes an upper part 5 and a lower part 9, the upper part 5 has a handle 4 convenient for grabbing, the handle 4 is a semicircular ring structure integrally formed with the upper part 5, and the handle 4 is outwardly protruded to form a grabbing end part.
[0044] A groove is arranged on the end face of the upper part 5 away from the handle 4, and the lower part 9 is partially embedded and connected in the groove, two groups of clamping grooves 6 are respectively arranged on a group of opposite inner side faces in the groove, and two groups of clamping blocks 8 corresponding to the clamping grooves 6 are arranged on the opposite end faces of the end part of the lower part 9 embedded in the groove. When the lower part 9 is embedded in the groove of the upper part 5, the detachable connection between the upper part 5 and the lower part 9 is realized through the clamping and limiting between the two groups of clamping blocks 8 and the clamping grooves 6.
[0045] Further, the end face of the lower part 9 embedded in the groove is provided with a waist-shaped slot, and two through holes are vertically formed at the two ends of the waist-shaped slot. The conductor in the embodiment is a U-shaped conductor 7 formed by bending a metal rod twice, and the horizontal rod part between the two bending parts is embedded in the waist-shaped slot, and the two pin heads are inserted into the opening and fall out of the lower part 9. When the lower part 9 is clamped and matched with the upper part 5, the end face of the embedded groove abuts against the inner bottom face of the groove, so as to press and fix the horizontal rod part of the U-shaped conductor.
[0046] The lower part 9 is also provided with a tapered protruding structure corresponding to the two openings, which is generally made of the same plastic material as the lower part 9 and has a certain elastic deformation capacity. When the pin body 1 is inserted into the corresponding jack 3, the tapered protruding structure is clamped and limited with the inner surface of the jack 3.
[0047] The utility model is not limited to the above-mentioned optional implementation, and anyone can derive other various forms of products under the inspiration of the utility model. The above-mentioned specific embodiments should not be understood as the limitation of 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 short plug pin for setting in series connection between the jacks (3) of adjacent SPD structures (2) arranged side by side, which connect external remote signaling circuits, characterized in that: The plug pin body (1) is made of insulating material, and the conductor is wrapped in the plug pin body (1) and exposes two plug pin heads respectively inserted into the jack holes (3) of adjacent SPD structures (2).
2. The SPD shorting plug pin of claim 1, wherein: The plug pin body (1) comprises a handle (4) for easy grabbing.
3. The SPD shorting plug pin of claim 1, wherein: The plug pin body (1) is provided with a tapered protrusion for clamping and limiting with the inner wall of the jack hole (3) at the position where the conductor passes through.
4. The SPD short plug pin according to any one of claims 1-3, characterized in that: The plug pin body (1) comprises an upper part (5) and a lower part (9) which are buckled with each other, the upper part has a recess for partially embedding the lower part (9), the recess is provided with a clamping groove (6), and the surface of the lower part (9) embedded in the recess is provided with a clamping block (8) corresponding to the clamping groove (6).
5. The SPD shorting plug pin of claim 4, wherein: The inner wall of the recess is provided with two sets of clamping grooves (6) symmetrically arranged on the opposite inner sides, and the opposite end surfaces of the lower part (9) embedded in the recess are provided with two sets of clamping blocks (8) corresponding to the clamping grooves (6).
6. The SPD shorting plug pin of claim 4, wherein: The lower part (9) has two openings, the conductor passes through the openings to expose two plug pin heads from the end surface of the lower part (9) embedded in the recess, and the conductor has a part remaining in the recess when the lower part (9) is buckled with the upper part (5).
7. The SPD shorting plug pin of claim 6, wherein: The conductor is a U-shaped conductor (7) formed by bending a metal rod, the end of the lower part (9) embedded in the recess is provided with a waist-shaped groove for accommodating the U-shaped conductor (7), and the openings are vertically arranged at the two ends of the waist-shaped groove, respectively.