Surge protection device

Abstract

The embodiment of the utility model discloses a surge protection device, which is characterized in that the surge protection device has a working state and a failure state, and comprises a shell provided with an inspection window; the positive wire clamp and the negative wire clamp are positioned in the shell; the separating part is electrically connected between the positive wire clamp and the negative wire clamp in a working state; the movable part is movably arranged in the shell, comprises a base body, and has a first position in a working state and a second position in a failure state; at the second position, the base body moves the separation piece to disconnect the positive wire clamp and the negative wire clamp; the movable part shields or avoids the inspection window when located at different positions. The surge protection device has the beneficial effect that the state recognition of the surge protection device is realized through a simple structure.

Description

Technical Field

[0001] The present application relates to the field of electrical equipment, and in particular, to a surge protector. Background Art

[0002] With the development of the times and the advancement of technology, the application of surge protectors is becoming more and more important. In the construction of 5G and the upcoming 6G base stations, surge protectors are widely used to better protect the safety of electrical systems and equipment in base stations. Ordinary rail-type surge protectors are large in size and cumbersome in wiring; board-mounted surge protectors have high maintenance costs and require the replacement of the entire circuit board when damaged.

[0003] Currently, there are some pluggable surge protectors on the market. However, these pluggable surge protectors have limitations in shape and plug-in structure, and cannot determine whether the surge protector is working properly or damaged; or the structure of indicating the status is too complicated and the cost is high. Utility Model Content

[0004] The main purpose of the utility model is to provide a surge protector, aiming to solve the above problems existing in the prior art.

[0005] To achieve the above object, the utility model provides a surge protector, which is characterized by having a working state and a failure state, including:

[0006] The housing is provided with an inspection window;

[0007] A positive electrode wire clamp and a negative electrode wire clamp, located in the housing;

[0008] a disconnecting member, electrically connected between the positive electrode clamp and the negative electrode clamp in the working state;

[0009] A movable member is movably disposed in the housing, comprising a base, and has a first position in the working state and a second position in the failure state; in the second position, the base moves the separation member to disconnect the positive electrode clamp and the negative electrode clamp;

[0010] The movable part blocks or avoids the inspection window when it is in different positions.

[0011] In some embodiments,

[0012] The movable part also includes:

[0013] A first protrusion, one end of which is connected to the side surface of the base body and the other end of which corresponds to the inspection window;

[0014] The other end of the first protrusion has a preset feature, which includes at least one of a structural feature, a shape feature, and a color feature.

[0015] In some embodiments,

[0016] The other end of the first protrusion has a first color;

[0017] The housing further comprises:

[0018] an indicator plate, disposed at a position corresponding to the inspection window, having a second color, the second color being different from the first color;

[0019] The other end of the first protrusion blocks the indicator plate from the inspection window when the other end is in the first position, and avoids the indicator plate from the inspection window when the other end is in the second position.

[0020] In some embodiments,

[0021] The first protrusion includes a connecting section and a shielding section arranged in an L shape;

[0022] One end of the connecting section is connected to the base;

[0023] The shielding section has the first color and extends laterally from the other end of the connecting section to between the indicator plate and the inspection window.

[0024] In some embodiments,

[0025] The surge protector further comprises:

[0026] Micro switch;

[0027] an alarm circuit, the input end of which is electrically connected to the micro switch;

[0028] An alarm wire clamp, electrically connected to an output end of the alarm circuit;

[0029] The movable part can switch the state of the micro switch when it is in different positions, so that the alarm circuit outputs different signals through the alarm wire clamp.

[0030] In some embodiments,

[0031] The micro switch comprises:

[0032] ontology;

[0033] A lever rotatably connected to the body;

[0034] The movable part also includes:

[0035] The second protrusion is connected to the side surface of the base body, and moves the lever to switch the state of the micro switch when the movable part switches positions.

[0036] In some embodiments,

[0037] The surge protector further comprises:

[0038] a first protection element, electrically connected to the positive electrode clamp;

[0039] The disconnecting member is electrically connected to the negative electrode clamp;

[0040] In the working state, the first protection element is connected to the separation member via a welding point.

[0041] In some embodiments,

[0042] The first protection element comprises:

[0043] Varistor;

[0044] a first electrode, electrically connected to the varistor and welded to the separation member in the working state;

[0045] The second electrode is electrically connected to the varistor and the positive electrode clamp.

[0046] In some embodiments,

[0047] The surge protector further comprises:

[0048] a first connecting member, electrically connected to the negative electrode clamp;

[0049] a second connecting member, electrically connecting the second electrode and the positive electrode clamp;

[0050] A flexible conductor electrically connecting the first connecting member and the disconnecting member;

[0051] A positioning column, fixed on the housing, one end of the disengagement member being rotatably connected to the positioning column;

[0052] When the movable member is at the second position, the movable member is located between the positioning column and the first electrode to separate the separation member from the first electrode.

[0053] In some embodiments,

[0054] The surge protector further comprises:

[0055] A grounding wire clamp, located in the housing;

[0056] a third connecting member, electrically connected to the grounding clamp;

[0057] The second protection element has two ends electrically connected to the second connection member and the third connection member respectively.

[0058] In some embodiments,

[0059] The inspection window is located on one side of the shell;

[0060] The positive electrode wire clamp and the negative electrode wire clamp are located on the other side of the shell away from the inspection window.

[0061] In some embodiments,

[0062] The surge protector is a 1U surge protector.

[0063] The surge protector proposed in the present application has a movable part that abuts against the detachment part and is in a first position when the life of the varistor is normal. When the varistor degrades or is overloaded, the temperature of the first protection element rises, causing the solder joint between the detachment part and the first protection element to melt, and the movable part can be moved to the second position to separate the first protection element from the detachment part. The movable part also has a degradation indication function. By setting an inspection window on the shell, the movable part blocks or avoids the inspection window when it is in different positions. Maintenance personnel can easily observe whether the surge protector fails or not, and whether it needs to be replaced from the inspection window. The movable part also cooperates with structures such as micro switches and alarm circuits. When the movable part is in different positions, the state of the micro switch is switched, so that the alarm circuit outputs different signals, thereby realizing the function of remote monitoring of the surge protector. The movable part has the functions of thermal detachment and indicating the state of the surge protector, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0065] The methods, systems and / or programs in the accompanying drawings will be further described according to exemplary embodiments. These exemplary embodiments will be described in detail with reference to the drawings. These exemplary embodiments are non-limiting exemplary embodiments, wherein reference numerals represent similar mechanisms in the various views of the accompanying drawings.

[0066] Figure 1 This is a schematic diagram of the structure of a surge protector according to some embodiments of the present application when it is working normally;

[0067] Figure 2 for Figure 1 Schematic diagram of the structure of the surge protector after the thermal fuse trips.

[0068] Icons: 100-shell, 110-inspection window, 120-indicator plate, 130-positioning column, 210-negative wire clamp, 220-positive wire clamp, 230-grounding wire clamp, 241, 242-alarm wire clamp, 310-first connecting piece, 320-flexible conductor, 330-detachment piece, 340-second connecting piece, 350-second protection element, 360-third connecting piece, 370-first wire, 380-second wire, 390-alarm circuit, 400-first protection element, 410-supporting piece, 420-first electrode, 430-second electrode, 500-movable piece, 510-base, 520-first protrusion, 530-second protrusion, 540-elastic piece, 600-micro switch, 610-body, 620-lever. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0070] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0071] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0072] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0073] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0074] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] Figure 1 is a schematic diagram of the structure of the surge protector in the embodiment of the present application when it is working normally; Figure 2 yes Figure 1 The schematic diagram of the structure of the surge protector after the thermal fuse trips. Please refer to Figure 1-Figure 2 The surge protector in this embodiment includes a housing 100, an external connection component, a protection component, a thermal separation component, an alarm component, and the like.

[0076] The housing 100 has an accommodating space inside, which is divided into a plurality of small spaces by a plurality of partitions for accommodating different components inside.

[0077] The external connection assembly includes a negative wire clamp 210, a positive wire clamp 220, and a grounding wire clamp 230. Specifically, the negative wire clamp 210, the positive wire clamp 220, and the grounding wire clamp 230 are arranged at one end of the housing 100 so that the surge protector can be plugged in and out of the cabinet. Furthermore, in order to enable the surge protector to be fixed in the cabinet after insertion, the connection assembly also includes a locking mechanism, which can cooperate with the positioning hole of the cabinet shell to fix the surge protector. Optionally, the surge protector is a 1U surge protector to adapt to a 1U cabinet. The negative wire clamp 210, the positive wire clamp 220, and the grounding wire clamp 230 are electrically connected to other structures in the surge protector through the first connector 310, the second connector 340, and the third connector 360, respectively. Specifically, each wire clamp is electrically connected to the corresponding connector by welding or riveting.

[0078] The protection assembly includes a first protection element 400 and a second protection element 350. The first protection element 400 may include a varistor or a graphite gap device, etc. Optionally, the first protection element 400 in this embodiment includes a varistor, a support member 410, a first electrode 420, and a second electrode 430. The support member 410 is used as a shell of the first protection element 400 to accommodate the varistor. The first electrode 420 and the second electrode 430 are arranged on the support member 410, and one end of both is electrically connected to the varistor. The two ends of the second protection element 350 are electrically connected to the positive electrode clamp 220 and the grounding clamp 230 through the second connector 340 and the third connector 360, respectively. Optionally, the second protection element 350 in this embodiment may include a gas discharge tube, a discharge gap, a transient suppression diode, etc.

[0079] The thermal disengagement assembly includes a disengagement member 330, a movable member 500, and an elastic member 540. The disengagement member 330 is electrically connected to the negative electrode clamp 210 through the flexible conductor 320 and the first connecting member 310 in sequence. When the surge protector works normally, the disengagement member 330 is welded to the first protection element 400. Specifically, one end of the disengagement member 330 is connected to the first electrode 420 through a welding point. The welding point adopts a low-temperature alloy with a low melting point, such as low-temperature solder paste. The other end of the disengagement member 330 is rotatably connected to the positioning column 130 in the housing 100. The movable member 500 includes a base 510, a first protrusion 520, and a second protrusion 530. The base 510 is a strip structure. The elastic member 540 is arranged at one end of the base 510. Optionally, the elastic member 540 may include an elastic structure such as a spring or be made of an elastic material. A guide groove is provided in the housing 100. The elastic member 540 and the base 510 are arranged in the guide groove. One end of the elastic member 540 abuts against the bottom of the guide groove, and the other end abuts against one end of the base 510, and the other end of the base 510 abuts against the separation member 330. The movable member 500 can move up and down along the guide groove under the action of the elastic member 540 and has a first position and a second position.

[0080] like Figure 1 As shown, when there is no surge, the surge protector is in a normal state: the detachment member 330 is welded to the first electrode 420, the movable member 500 is in the first position, the elastic member 540 is compressed and causes the movable member 500 to have a tendency to move upward to the second position, thereby causing the detachment member 330 to have a tendency to separate from the first electrode 420, the second protection element 350 maintains a high impedance, the positive electrode clamp 220 and the negative electrode clamp 210 maintain a high impedance, and the positive electrode clamp 220 and the grounding clamp 230 also maintain a high impedance. Figure 2As shown, when the surge voltage reaches the threshold voltage, the surge protector is thermally tripped and in a failed state: the second protection element 350 is instantaneously turned on, the surge current is conducted to the ground through the grounding clamp 230, and the varistor is degraded or overloaded, the temperature of the varistor rises and exceeds the melting point of the low-temperature alloy, the solder joint between the detachment member 330 and the first electrode 420 melts, the elastic member 540 releases its elasticity and pushes the movable member 500 to move upward to the second position, the movable member 500 is located between the positioning column 130 and the first electrode 420, the detachment member 330 rotates around the positioning column 130 for a certain angle and separates from the first electrode 420, the positive electrode clamp 220 and the negative electrode clamp 210 are disconnected, thereby cutting off the loop current, avoiding the surge protector from catching fire, and protecting the safety of the line and equipment. It can be understood that at this time, the flexible conductor 320 bends as the detachment member 330 rotates to maintain the electrical connection between the detachment member 330 and the first connecting member 310.

[0081] The first protrusion 520 is disposed on one side of the base 510. The housing 100 is provided with an inspection window 110. The inspection window 110 is located at the end of the housing 100 away from the plugging direction, that is, the end of the housing 100 away from the positive electrode clamp 220 and the negative electrode clamp 210, so that the inspection window 110 can be exposed to the outside after the surge protector is inserted into the cabinet, so that the maintenance personnel can directly check the inspection window 110. The head end of the first protrusion 520 is connected to the side of the base 510, and the end corresponds to the inspection window 110. From the perspective of the maintenance personnel viewing the inspection window 110 from the outside, when the surge protector is in the working state, the movable member 500 is in the first position, and the end of the first protrusion 520 appears within the inspection range of the inspection window 110 and blocks the inspection window. When the surge protector is in the failed state, the movable member 500 is in the second position, and the end of the first protrusion 520 avoids the inspection window 110 and disappears from the inspection range of the inspection window 110. The maintenance personnel can identify the state of the surge protector as the working state or the failed state according to the movable member 500 blocking or avoiding the inspection window 110. It can be understood that when the movable member 500 is in the first position, the end of the first protrusion 520 avoids the inspection window 110 and disappears from the inspection range of the inspection window 110; when the movable member 500 is in the second position, the end of the first protrusion 520 appears within the inspection range of the inspection window 110 and blocks the inspection window, and the state of the surge protector can also be identified.

[0082] In order to facilitate the observation by the maintenance personnel, the end of the first protrusion 520 is provided with an easily identifiable feature, and optionally, the feature can be at least one of a specific structural feature (such as a convexity, frosting), a shape feature (such as a triangle, a circle), and a color feature. Preferably, the feature includes a color feature. The end of the first protrusion 520 has a first color. The housing 100 also includes an indicator plate 120 disposed at a position corresponding to the inspection window 110. The indicator plate 120 has a second color different from the first color. When the movable part 500 is in the first position, the end of the first protrusion 520 blocks the indicator plate 120 from the inspection window 110, and the maintenance personnel can see the first color of the end of the first protrusion 520 from the inspection window 110. When the movable part 500 is in the second position, the end of the first protrusion 520 avoids the indicator plate 120 from the inspection window 110, and the maintenance personnel can see the second color of the indicator plate 120 from the inspection window 110. Optionally, the first color is green to indicate that the surge protector is functioning properly, and the second color is red to indicate that the surge protector is damaged and needs to be replaced.

[0083] As an optional embodiment, the first protrusion 520 includes a connecting section 521 and a shielding section 522 arranged in an L shape. The connecting section 521 connects the shielding section 522 and the base 510. The indicator plate 120 is located between the base 510 and the inspection window 110 and faces the inspection window 110. One end of the connecting section 521 is connected to the base 510 and extends from the base 510 toward the inspection window 110. The connecting section 521 is located at one side of the indicator plate 120. The other end of the connecting section 521 passes over the indicator plate 120 from the side of the indicator plate 120. The shielding section 522 extends laterally from the other end of the connecting section 521 to between the indicator plate 120 and the inspection window 110. The shielding section 522 has a first color. When the movable member 500 is in the first position, the shielding section 522 shields the indicator plate 120 from the inspection window 110. When the movable member 500 is at the second position, the shielding section 522 avoids the indicating plate 120 from the inspection window 110 .

[0084] Relative to the first protrusion 520, the second protrusion 530 is arranged on the other side of the base 510 for cooperating with the alarm assembly. The alarm assembly includes a micro switch 600, a first wire 370, a second wire 380, an alarm circuit 390, and two alarm wire clamps 241 and 242. The micro switch 600 includes a body 610 and a lever 620 rotatably connected to the body 610. The two pins of the body 610 are electrically connected to the input end of the alarm circuit 390 through the first wire 370 and the second conductor respectively. The alarm wire clamp 241 and the alarm wire clamp 242 are electrically connected to the output end of the alarm circuit 390. After the surge protector is plugged into the cabinet, the alarm wire clamp 241 and the alarm wire clamp 242 are connected to the external monitoring device through the receiving end on the cabinet. When the surge protector works normally and the movable part 500 is in the first position, the second protrusion 530 presses the lever 620 to keep the micro switch 600 in a fixed switch state, and the alarm circuit 390 outputs the first signal to the outside through the alarm wire clamp 241 and the alarm wire clamp 242. When the surge protector fails and the movable part 500 is in the second position, the second protrusion 530 moves upward by a certain distance and no longer presses the lever 620. After the lever 620 rebounds, the switch state of the micro switch 600 is switched, and the alarm circuit 390 outputs a second signal different from the first signal to the outside through the alarm wire clamp 241 and the alarm wire clamp 242. The external monitoring device can determine whether the state of the surge protector is a working state or a failure state based on the received first and second signals, so that the maintenance personnel can remotely monitor the surge protector.

[0085] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A surge protector, characterized in that: Has working state and failure state, including: The housing (100) is provided with an inspection window (110); A positive electrode wire clamp (220) and a negative electrode wire clamp (210) are located inside the housing (100); a disengagement member (330) electrically connected between the positive electrode clamp (220) and the negative electrode clamp (210) in the working state; A movable member (500) is movably disposed in the housing (100), comprising a base (510) having a first position in the working state and a second position in the failure state; in the second position, the base (510) moves the separation member (330) to disconnect the positive electrode clamp (220) and the negative electrode clamp (210); The movable part (500) blocks or avoids the inspection window (110) when it is in different positions.

2. The surge protector according to claim 1, characterized in that: The movable part (500) further comprises: A first protrusion (520), one end of which is connected to the side surface of the base (510) and the other end of which corresponds to the inspection window (110); The other end of the first protrusion (520) has a preset feature, which includes at least one of a structural feature, a shape feature, and a color feature.

3. The surge protector according to claim 2, characterized in that: The other end of the first protrusion (520) has a first color; The housing (100) further comprises: an indicator plate (120), arranged at a position corresponding to the inspection window (110), having a second color, the second color being different from the first color; The other end of the first protrusion (520) blocks the inspection window (110) and the indicator plate (120) when in the first position, and avoids the inspection window (110) and the indicator plate (120) when in the second position.

4. The surge protector according to claim 3, characterized in that: The first protrusion (520) comprises a connecting section (521) and a shielding section (522) arranged in an L shape; One end of the connecting section (521) is connected to the base (510); The shielding section (522) has the first color and extends laterally from the other end of the connecting section (521) to between the indicating plate (120) and the inspection window (110).

5. The surge protector according to any one of claims 1 to 4, characterized in that: The surge protector further comprises: Micro switch (600); An alarm circuit (390), an input end of which is electrically connected to the micro switch (600); An alarm wire clamp electrically connected to an output end of the alarm circuit (390); The movable member (500) can switch the state of the micro switch (600) when it is in different positions, so that the alarm circuit (390) outputs different signals to the outside through the alarm wire clamp.

6. The surge protector according to claim 5, characterized in that: The micro switch (600) comprises: Ontology(610); A lever (620) rotatably connected to the body (610); The movable part (500) further comprises: The second protrusion (530) is connected to the side surface of the base (510), and moves the lever (620) to switch the state of the micro switch (600) when the movable member (500) switches positions.

7. The surge protector according to any one of claims 1 to 4, characterized in that: The surge protector further comprises: A first protection element (400) electrically connected to the positive electrode clamp (220); The separation member (330) is electrically connected to the negative electrode clamp (210); In the working state, the first protection element (400) is connected to the separation member via a welding point.

8. The surge protector according to claim 7, characterized in that: The first protection element (400) comprises: Varistor; A first electrode (420), electrically connected to the varistor, and welded to the separation member (330) in the working state; The second electrode (430) is electrically connected to the varistor and the positive electrode clamp (220).

9. The surge protector according to claim 8, characterized in that: The surge protector further comprises: A first connecting member (310) electrically connected to the negative electrode clamp (210); A second connecting member (340) electrically connecting the second electrode (430) and the positive electrode clamp (220); A flexible conductor (320) electrically connecting the first connecting member (310) and the disconnecting member (330); A positioning column (130) is fixed on the housing (100), and one end of the separation member (330) is rotatably connected to the positioning column (130); When the movable member (500) is at the second position, it is located between the positioning column (130) and the first electrode (420) to separate the separation member (330) from the first electrode (420).

10. The surge protector according to claim 9, characterized in that: The surge protector further comprises: A grounding wire clamp (230) located inside the housing (100); A third connecting member (360) electrically connected to the grounding clamp (230); The second protection element (350) has two ends electrically connected to the second connection member (340) and the third connection member (360) respectively.

11. The surge protector according to any one of claims 1 to 4, characterized in that: The inspection window (110) is located on one side of the housing (100); The positive electrode wire clamp (220) and the negative electrode wire clamp (210) are located on the other side of the housing (100) away from the inspection window (110).

12. The surge protector according to any one of claims 1 to 4, characterized in that: The surge protector is a 1U surge protector.

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