Fuse and surge combined electric appliance comprising same

Abstract

The utility model discloses a fuse and a surge combined electric appliance comprising the same, and belongs to the technical field of surge protectors. The fuse comprises a shell, a first hollow inner cavity is formed in the shell, and a fuse module is rotationally installed in the first hollow inner cavity; the fusing module comprises a fuse wire support and a conduction indication support, the fuse wire support is sleeved with a fuse wire, and the conduction indication support is embedded in the fuse wire support. According to the utility model, the fuse bracket extends out of the opening along with the rotation of the rotating shaft, a fuse to be replaced is directly drawn out from the second hollow inner cavity on the fuse bracket, a new fuse is replaced, and then the fuse bracket is rotated in the opposite direction under the assistance of the rotating shaft, so that the fuse bracket is positioned in the first hollow inner cavity in the shell; and the fuse wire is sleeved in the copper sheet end to end, so that the fuse wire and a device in the fuse form an electrified loop, and when the fuse wire is damaged, only the fuse wire needs to be replaced without replacing the whole fuse, so that the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to a fuse and a surge combination electrical appliance containing the fuse, belonging to the technical field of surge protectors. Background Art

[0002] A fuse is an electrical safety device used for overload protection and automatically cuts off the power supply in a circuit. A fuse consists of one or more fuses (usually made of fusible metal). When the current in the circuit exceeds the rated value of the fuse, the fuse will melt due to overheating, thereby cutting off the circuit. It is widely used in a variety of electrical systems such as homes, industries, automobiles, and electronic equipment to protect circuits and equipment from damage caused by overloads or short circuits.

[0003] A surge protector is a device used to protect electronic equipment from electrical surges. It is used to limit overvoltages in power systems caused by lightning or system operation, and protect electronic and microelectronic integrated equipment from damage caused by lightning overvoltages and lightning electromagnetic pulses. It is suitable for AC power supply systems, including residential, commercial and industrial fields.

[0004] Surge protectors with fuses are widely used in the market, including setting fuses inside surge protectors. They are compact in structure and flexible in application, and are favored by the majority of users.

[0005] At present, the surge protector with fuse in the prior art is often assembled in a modular manner, that is, the fuse and the surge module are modularized, and the modules are assembled. Therefore, if the fuse on the fuse is broken, the entire module with the fuse is replaced. However, except for the broken fuse, the rest of the replaced module can still be used, which causes a great waste.

[0006] Furthermore, a surge protector containing a fuse often involves a first remote alarm module, through which the background system is informed that the surge protector has failed and needs repair. However, after actually arriving at the site, it is not clear which part has failed. In order to determine the location of the fault, communication with the background system is required, which increases the repair time and thus increases the repair cost. Utility Model Content

[0007] The utility model provides a fuse and a surge combination appliance containing the fuse, which aims to adopt a new method to replace the fuse in the fuse, without replacing the entire fuse, thereby reducing the use cost. In addition, a new method is also adopted to synchronously realize remote alarm and on-site indication, so that it is convenient for later maintenance personnel to find the location that needs maintenance in time after arriving at the site. Compared with the existing technology, the maintenance time is shortened, and the maintenance cost is finally reduced.

[0008] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0009] A fuse comprises a shell, wherein a first hollow inner cavity is provided inside the shell, and a fuse module is rotatably installed in the first hollow inner cavity;

[0010] The fuse module includes a fuse holder and a conduction indication holder, wherein a fuse is sleeved on the fuse holder, the conduction indication holder is embedded in the fuse holder, and one end of the conduction indication holder corresponds to the first remote alarm module located in the first hollow inner cavity; a through hole is provided on the top of the shell, and a first color indicator strip is provided on the other end of the conduction indication holder, and the first color indicator strip corresponds to the through hole;

[0011] Two groups of copper sheets are installed in the first hollow inner cavity, corresponding to the head and tail of the fuse. After the fuse holder is rotated, the two ends of the fuse are stuck in the two groups of copper sheets. An opening is opened on one side wall of the shell. The fuse holder rotates in the shell and extends out of the shell through the opening, so that the fuse can be replaced outside the shell.

[0012] The bottom of the fuse corresponds to the conduction indication bracket; when the fuse blows, the fuse moves against the conduction indication bracket, so that the conduction indication bracket moves away from the fuse bracket until one end of the conduction indication bracket contacts and conducts with the first remote alarm module, which is convenient for feedback of the on-site situation to the background. At the same time, the first color indicator bar on the other end is displayed on the shell through the through hole, which is convenient for distinguishing whether the fuse module is normal according to the color on the first color indicator bar.

[0013] Preferably, a protruding embedding groove is provided on the outer side wall of the fuse holder, and the conduction indication holder is embedded in the protruding embedding groove.

[0014] Preferably, a second hollow inner cavity is provided in the fuse holder, and serial ports are provided at the upper and lower ends thereof, and the fuse is placed in the fuse holder or taken out from the fuse holder through the serial ports, so that the fuse is easily replaced.

[0015] Preferably, a rotating shaft is rotatably sleeved in the first hollow inner cavity, the fuse holder is sleeved on the rotating shaft, and the fuse holder extends out of the opening or into the first hollow inner cavity through the rotation of the rotating shaft.

[0016] Preferably, the rotating shaft is installed at the lower part of the first hollow inner cavity, and a positioning block is installed on the fuse holder, and the positioning block is close to the rotating shaft. When the fuse holder extends out of the opening, the positioning block contacts and supports the outer wall of the shell. At this time, the fuse holder is exposed outside the shell, and the fuse is pulled out or inserted through the serial port on the fuse holder to replace the fuse;

[0017] A strap is provided on the top side wall of the first hollow inner cavity, and a positioning plate is provided on the fuse holder. When the positioning plate is overlapped on the strap, the fuse holder is located in the first hollow inner cavity, and the head and tail ends of the fuse are respectively stuck in two groups of copper sheets, contacting and electrically conducting with the two groups of copper sheets. A first terminal is provided at one end of the shell, and one end of the copper sheet at the head end of the fuse is fixed to and electrically connected with the first terminal through a conductive fixing column, and one end of the copper sheet at the tail end of the fuse is fixed to the shell through a conductive fixing column.

[0018] Preferably, a notch is provided on the fuse holder, and the notch is close to the rotating shaft, so as to facilitate the fuse holder to rotate out of the housing or into the housing.

[0019] Preferably, the copper sheet is an annular structure and is provided with a placement opening along its axial direction to facilitate the insertion of the fuse into the copper sheet; the copper sheet includes two supporting sections, two placement sections and two closing sections, a connecting section and a limiting ring, and each supporting section, placement section and closing section are connected in sequence, the two supporting sections are connected to the connecting section, and the outer side wall of the placement section expands outward toward the outer side wall of the supporting section; the two end portions of the limiting ring are installed on the outer side walls of the two closing sections, and the middle position of the limiting ring is sleeved on the conductive fixing column.

[0020] By adopting the above scheme, the fuse enters through the closing section and is stuck in the channel formed by the two placement sections, or detaches from the channel through the two closing sections, and the opening degree of the closing section is limited by the limiting ring, so that when the fuse passes through the closing section and enters the placement section, the closing section can be restored by the limiting ring, thereby preventing the fuse from freely detaching from the copper sheet.

[0021] Preferably, a handrail is provided on the fuse holder, and the handrail is located outside the shell, so that the fuse holder can be rotated with the assistance of the rotating shaft by holding the handrail, and then the fuse on the fuse holder can leak out of the shell, so as to replace the fuse.

[0022] Preferably, a third hollow inner cavity is provided in the fuse holder, and the third hollow inner cavity is communicated with the second hollow inner cavity, one end of the conduction indication holder is located in the first hollow inner cavity, and the other end is located in the third hollow inner cavity, and a reset mechanism is provided in the third hollow inner cavity, and the conduction indication holder is sleeved on the reset mechanism. When a new fuse is replaced in the fuse holder, the conduction indication holder is reset under the action of the reset mechanism. At this time, the color of the first color indicator bar on the conduction indication holder is changed, so that the staff can know that it has returned to normal.

[0023] Preferably, the reset mechanism is a spring, which is arranged in the third hollow inner cavity; a bearing platform is provided on the conduction indication bracket, and the bearing platform is sleeved on the spring; when the ejector pin abuts against the conduction indication bracket, the spring is in a compressed state, the first color indicator bar is green, and the fuse is in a normal state; when the ejector pin pushes against the conduction indication bracket and moves away from the fuse bracket, the spring is still in a compressed state until the color of the first color indicator bar changes from green to red, at which time it displays red, and the fuse is in a blown fuse state; when a new fuse is replaced, the conduction indication bracket is reset under the action of the spring and abuts against the ejector pin on the replaced fuse, at which time the color of the first color indicator bar changes from red to green, and the fuse is in a normal state.

[0024] It should be noted that:

[0025] (1) The power for the movement of the ejector pin comes from the matching structure of the fuse and the ejector pin. This structure is implemented using the existing technology, that is, using the existing fuse structure, such as the fuse structure in the fuse model SYSF-C40. For this reason, it is not elaborated in detail in this article. As a result, the movement of the ejector pin causes the conduction indicator frame to move, and finally achieves contact with the first remote alarm module, thereby achieving on-site indication.

[0026] (2) A sleeve platform is also installed in the third hollow inner cavity, which corresponds to the bearing platform, and the two ends of the spring are respectively sleeved on the bearing platform and the sleeve platform; when the conduction indication bracket moves, the bearing platform moves toward the sleeve platform, and the spring is in a compressed state. At this time, the ejector pin always supports the conduction indication bracket, so that the conduction indication bracket is stationary after movement, that is, the conduction indication bracket is in a stationary state. At this time, the color on the first color indicator strip is always red, so that maintenance personnel can easily find which fuse has a problem after arriving at the site, which is convenient for later maintenance;

[0027] (3) When the fuse is in a normal state, the compression of the spring is less than when the fuse is blown;

[0028] A surge combination appliance containing the above-mentioned fuse includes the above-mentioned fuse.

[0029] Preferably, the surge combination appliance further comprises three surge modules and three wiring boards, and the three surge modules and the three wiring boards are all mounted on the housing, and each of the wiring boards is located below the surge module, the three surge modules are defined as a first surge module, a second surge module and a third surge module, and the three wiring boards are defined as a first wiring board, a second wiring board and a third wiring board;

[0030] The copper sheet at the head end of the fuse wire in one of the fuses is electrically connected to one of the first terminal blocks through a guiding fixing post, and the copper sheet at the tail end of the fuse wire is electrically connected to the second terminal block through a guiding fixing post, a first wiring board, a first surge module, a third wiring board, a third surge module, and a second terminal block in sequence;

[0031] The copper sheet at the head end of the fuse wire in the other fuse is electrically connected to the other first terminal block through a guiding fixing post, and the copper sheet at the tail end of the fuse wire is electrically connected to the second terminal block through a guiding fixing post, a second wiring board, a second surge module, a third wiring board, a third surge module, and a second terminal block in sequence.

[0032] Preferably, the first surge module, the second surge module, and the third surge module are arranged in a "pin" shape on the housing, and the first wiring board, the second wiring board, and the third wiring board are also arranged in a "pin" shape on the housing; and the two fuses are located on both sides of the first surge module, the second surge module, and the third surge module arranged in a "pin" shape on the housing.

[0033] Preferably, a third terminal block is further provided in the surge combined electrical appliance, and the third terminal block is electrically connected to the third wiring board for testing whether the conduction voltage of each module meets the requirements during factory testing.

[0034] Preferably, the surge combined electrical appliance further includes a PCB board, and a second remote alarm module is further provided on the PCB board and corresponds to the surge module. A contact rod is provided at the bottom of the surge module. When the contact rod contacts the second remote alarm module, the second remote alarm module alarms at this time;

[0035] A second color indicating strip is provided on the surge module. When the second remote alarm module alarms, the second color indicating strip shows a color change at the same time.

[0036] It should be noted that:

[0037] (1) The functions of the surge protection modules used in the present invention are mostly the same as those of the surge protectors on the market. This surge module contains an operating mechanism. This operating mechanism can not only realize the color change of the second color indicating strip (the second color indicating strip is also composed of red and green), but also drive the contact rod to move towards the second remote alarm module until it contacts the second remote alarm module and alarms to the background. In addition, when the operating mechanism is driven is based on a large voltage load. For example, when it exceeds 1500V, the operating mechanism will act, and then the subsequent remote alarm of the second remote alarm module and on-site indication will occur.

[0038] (2) A communication module is arranged on the PCB board, and the first remote alarm module is also arranged on the PCB board, and the first remote alarm module and the second remote alarm module are both electrically connected to the communication module to facilitate remote alarm.

[0039] The beneficial effects of the utility model are:

[0040] (1) The utility model mainly utilizes that the fuse holder extends out of the opening as the shaft rotates. At this time, the fuse to be replaced can be directly pulled out from the second hollow inner cavity on the fuse holder, and then a new fuse can be replaced. Then, with the assistance of the shaft, the fuse holder is rotated in the opposite direction so that the fuse holder is located in the first hollow inner cavity inside the shell, and the fuse is sleeved in the copper sheet at the head and tail to form an electrical circuit with the device inside the fuse. Compared with the prior art, the fuse adopts a modular design. When the fuse is broken, there is no need to replace the entire fuse, only the fuse needs to be replaced, thereby reducing the use cost;

[0041] (2) The copper sheet used in the present invention is an annular structure, which mainly includes two supporting sections, two placing sections, two closing sections and a connecting section, and each supporting section, placing section and closing section are connected in sequence, the two supporting sections are connected to the connecting section, and the outer side wall of the placing section expands outward toward the outer side wall of the supporting section. The fuse enters through the closing section and is stuck in the channel formed by the two placing sections or is separated from the channel through the two closing sections, so that the contact or separation between the fuse and the copper sheet is facilitated;

[0042] (3) In the utility model, after the fuse is blown, the ejector pin on the fuse moves toward the conduction indicator bracket. Since the conduction indicator bracket is directly embedded in the fuse bracket, the ejector pin pushes the conduction indicator bracket away relative to the fuse bracket during movement. During the movement of the conduction indicator bracket, both ends of the conduction indicator bracket move in the same direction, that is, one end moves toward the first remote alarm module until it contacts the first remote alarm module and sends an alarm to the remote. At the same time, the other end of the conduction indicator bracket presses down the spring. At this time, the color of the first color indicator strip on the other end changes from green to red, that is, which fuse on the surge combination electrical appliance is damaged is displayed on site;

[0043] (4) In the utility model, a first power-on circuit is formed by using the first terminal, fuse, first terminal block, first surge module, third terminal block, third surge module and second terminal on one side of the shell, and a second power-on circuit is formed by using the first terminal, fuse, second terminal block, second surge module, third terminal block, third surge module and second terminal on the other side of the shell. In actual application, the two power-on circuits (i.e., the first power-on circuit and the second power-on circuit) are connected to the incoming line and the outgoing line, and the two surge modules in each circuit are connected in series. Compared with the prior art, the protection voltage is higher, thereby increasing the protection level.

[0044] (5) In the present utility model, the surge modules in the surge combined electrical apparatus are arranged in a "pin" shape on the housing, and the two fuses are respectively located on both sides of the surge modules in the "pin" shape. With the above arrangement, the surge combined electrical apparatus in the present utility model has a small, compact structure and small volume, thereby reducing the production cost.

[0045] (6) The functions of the surge protection module used in the present utility model are mostly the same as those of the surge protectors on the market. However, an operating mechanism must be equipped on the surge protection module. On the one hand, the operating mechanism can cause the second color indicator bar to change color. On the other hand, it can also drive the contact rod to contact the second remote alarm module, so that the second remote alarm module can be remotely transmitted through the communication module, thereby knowing that the surge module is damaged and being able to conveniently know the position of the damaged surge module during maintenance, thus facilitating the maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic structural diagram of the fuse in the present utility model;

[0047] Figure 2 is a schematic structural diagram of the fuse module, copper sheet, conduction indication bracket, first remote alarm module, etc. in the present utility model;

[0048] Figure 3 is a schematic structural diagram of the copper sheet in the present utility model;

[0049] Figure 4 is a top view of the surge combined electrical apparatus containing a fuse in the present utility model;

[0050] Figure 5 is a top view of the surge combined electrical apparatus containing a fuse in the present utility model;

[0051] Figure 6 is a schematic diagram of the state when the fuse is located inside the housing in the surge combined electrical apparatus containing a fuse in the present utility model;

[0052] Figure 7 is a schematic diagram of the state when the present utility model is operating normally,

[0053] Figure 8 is a schematic diagram of the state when the fuse melts in the present utility model, the conduction indication bracket contacts the first remote alarm module, and the color indicator bar changes;

[0054] Fig. 9 is an exploded view of the surge combined electrical apparatus containing a fuse in the present utility model after removing the housing;

[0055] Fig.10It is a schematic diagram of the structure of the fuse module of the utility model when extending out of the surge combination appliance containing the fuse, wherein;

[0056] “→” indicates the operation direction when replacing the fuse. Indicates the rotation direction of the fuse holder relative to the housing.

[0057] Fig.11 This is a schematic diagram of the structure of the first remote alarm module, the second remote alarm module, and the communication module on the PCB board in the utility model;

[0058] Fig.12 It is a schematic diagram of the state when the contact rod on one of the surge modules in the utility model is connected to the second remote alarm module.

[0059] Fig.13 The present invention is a simplified circuit diagram among the first wiring terminal, the second wiring terminal, the third wiring terminal, the fuse and the surge module.

[0060] In the figure: housing 1; strap 2; copper sheet 3; support section 301; placement section 302; closing section 303; connection section 304; fuse holder 4; rotating shaft 5; through hole 6; first remote alarm module 7; conduction indication holder 8; fuse 9; first color indicator strip 10; handrail 11; carrier 12; first wiring terminal 13; second wiring terminal 14; wiring board 15; positioning block 16; surge module 17; third wiring terminal 18; ejector pin 19; spring 20; second hollow inner cavity 21; notch 22; first hollow inner cavity 23; positioning plate 24, socket platform 25, contact rod 26; second remote alarm module 27; second color indicator strip 28; communication module 29, PCB board 30, limiting ring 31. DETAILED DESCRIPTION

[0061] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific illustrations.

[0062] Example 1

[0063] like Figure 1-3 As shown, a fuse includes a housing 1, a first hollow inner cavity 23 is provided inside the housing 1, and a fuse module is rotatably installed in the first hollow inner cavity 23;

[0064] The fuse module includes a fuse holder 4 and a conduction indication holder 8. A fuse 9 is sleeved on the fuse holder 4. The conduction indication holder 8 is embedded in the fuse holder 4. One end of the conduction indication holder 8 corresponds to the first remote alarm module 7 located in the first hollow inner cavity 23. A through hole 6 is provided on the top of the housing 1. A first color indicator strip 10 is provided on the other end of the conduction indication holder 8. The first color indicator strip 10 corresponds to the through hole 6.

[0065] Two groups of copper sheets 3 are installed in the first hollow inner cavity 23, and correspond to the head and tail of the fuse 9. After the fuse holder 4 rotates, the two ends of the fuse 9 are stuck in the two groups of copper sheets 3. An opening is opened on one side wall of the housing 1. The fuse holder 4 rotates in the housing 1 and extends out of the housing 1 through the opening, so that the fuse 9 can be replaced outside the housing 1.

[0066] The bottom of the fuse 9 corresponds to the conduction indication bracket 8; when the fuse 9 is blown, the fuse 9 moves against the conduction indication bracket 8, so that the conduction indication bracket 8 is away from the fuse bracket 4, until one end of the conduction indication bracket 8 contacts and conducts with the first remote alarm module 7, which is convenient for feedback of the on-site situation to the background. At the same time, the first color indicator bar 10 on the other end is displayed on the shell 1 through the through hole, which is convenient for distinguishing whether the fuse module is normal according to the color on the first color indicator bar 10.

[0067] A second hollow inner cavity 21 is provided in the fuse holder 4 , and serial ports are provided at the upper and lower ends thereof, through which the fuse 9 is placed in or taken out of the fuse holder 4 , so that the fuse 9 is easily replaced.

[0068] A rotating shaft 5 is rotatably sleeved in the first hollow inner cavity 23 , and the fuse holder 4 is sleeved on the rotating shaft 5 . The fuse holder 4 extends out of the opening or into the first hollow inner cavity 23 through the rotation of the rotating shaft 5 .

[0069] The rotating shaft 5 is installed at the lower part of the first hollow inner cavity 23, and a positioning block 16 is installed on the fuse holder 4. The positioning block 16 is close to the rotating shaft 5. When the fuse holder 4 extends out of the opening, it contacts and supports the outer wall of the housing 1 through the positioning block 16. At this time, the fuse holder 4 is exposed outside the housing 1. Through the serial port on the fuse holder 4, the fuse 9 is pulled out or inserted, so as to replace the fuse 9;

[0070] A strap 2 is provided on the top side wall of the first hollow inner cavity 23, and a positioning plate 24 is provided on the fuse holder 4. When the positioning plate 24 is overlapped on the strap 2, the fuse holder 4 is located in the first hollow inner cavity 23, and the head and tail ends of the fuse 9 are respectively stuck in the two groups of copper sheets 3, contacting and electrically conducting with the two groups of copper sheets 9. A first terminal 13 is provided at one end of the shell 1, and one end of the copper sheet 3 located at the head end of the fuse 9 is fixed and electrically connected to the first terminal 13 through a conductive fixing column, and one end of the copper sheet 3 located at the tail end of the fuse 9 is fixed to the shell 1 through a conductive fixing column.

[0071] A notch 22 is provided on the fuse holder 4 , and the notch 22 is close to the rotating shaft 5 , so as to facilitate the fuse holder 4 to rotate out of the housing 1 or rotate into the housing 1 .

[0072] The copper sheet 3 is an annular structure and is provided with a placement opening along its axial direction to facilitate the fuse 9 to be inserted into the copper sheet 3 .

[0073] The copper sheet 3 includes two supporting sections 301, two placing sections 302, two closing sections 303, a connecting section 304 and a limiting ring 31, and each supporting section 301, placing section 302 and closing section 303 are connected in sequence, the two supporting sections 301 are connected to the connecting section 304, and the outer side walls of the placing sections 302 expand outward toward the outer side walls of the supporting sections 301, the two end portions of the limiting ring 31 are installed on the outer side walls of the two closing sections 303, and the middle position of the limiting ring 31 is sleeved on the conductive fixing column.

[0074] By adopting the above scheme, the fuse enters through the closing section 303 and is stuck in the channel formed by the two placement sections 302, or is detached from the channel through the two closing sections 303, and the opening degree of the closing section 303 is limited by the limiting ring 31, so that when the fuse 9 passes through the closing section 303 and enters the placement section, the closing section 303 can be restored by the limiting ring 31, thereby preventing the fuse 9 from freely detaching from the copper sheet 3, and pulling the handrail 11 to facilitate the contact or detachment of the fuse 9 from the copper sheet 3.

[0075] A third hollow inner cavity is provided in the fuse holder 4, and the third hollow inner cavity is communicated with the second hollow inner cavity 21. One end of the conduction indication holder 8 is located in the first hollow inner cavity 23, and the other end is located in the third hollow inner cavity. A reset mechanism is provided in the third hollow inner cavity, and the conduction indication holder 8 is sleeved on the reset mechanism. The conduction indication holder 8 is sleeved on the reset mechanism. When a new fuse 9 is replaced in the fuse holder 4, the conduction indication holder 8 is reset under the action of the reset mechanism. At this time, the color of the first color indicator bar on the conduction indication holder 8 is changed, so that the staff can know that it has returned to normal.

[0076] The reset mechanism is a spring 20, which is arranged in the third hollow inner cavity 21. A bearing platform 12 is provided on the conduction indication bracket 8, and the bearing platform 12 is sleeved on the spring 20; when the ejector pin 19 abuts against the conduction indication bracket 8, the spring 20 is in a compressed state, the first color indicator bar 10 is green, and the fuse is in a normal state; when the ejector pin 19 pushes against the conduction indication bracket 8 and moves away from the fuse bracket 4, the spring 20 is still in a compressed state until the color of the first color indicator bar 10 changes from green to red, at which time it displays red, and the fuse is in a blown fuse state; when a new fuse 9 is replaced, the conduction indication bracket 8 is reset under the action of the spring 20, and abuts against the ejector pin 19 on the replaced fuse 9, at which time the color of the first color indicator bar changes from red to green, and the fuse is in a normal state.

[0077] It should be noted that

[0078] (1) When the fuse module is in normal operation, the first color indicator bar 10 in the housing 1 is displayed in green. When operating normally, the conduction indicator bracket 8 should compress the spring 20, and the spring 20 applies an upward tension to the conduction indicator bracket 8. At this time, the first color indicator bar 10 on the conduction indicator bracket 8 is exposed outside the housing 1 through the through hole 6 and is green in color. The conduction indicator bracket 8 is not in contact with the first remote alarm module 7 and operates normally.

[0079] (2) When the fuse is in a normal state, the compression amount of the spring 20 is less than the compression amount of the spring 20 when the fuse is blown.

[0080] (3) A sleeve platform 25 is also installed in the third hollow inner cavity, which corresponds to the bearing platform 12. The two ends of the spring 20 are respectively sleeved on the bearing platform 12 and the sleeve platform 25; when the conduction indication bracket 8 moves, the bearing platform 12 moves toward the sleeve platform 25. At this time, the spring 20 is in a compressed state. At this time, the ejector pin 19 is always in a state of supporting the conduction indication bracket 8, so that the conduction indication bracket 8 is stationary after moving, that is, the conduction indication bracket 8 is in a stationary state. At this time, the color on the first color indicator strip 10 is always red, so that maintenance personnel can easily find which fuse has a problem after arriving at the site, which is convenient for later maintenance.

[0081] The fuse holder 4 is provided with a handrail 11 , and the handrail 11 is located outside the housing 1 , so that the fuse holder 4 can be rotated with the assistance of the rotating shaft 5 by holding the handrail 11 , and then the fuse 9 on the fuse holder 4 can be leaked out of the housing, so as to replace the fuse 9 .

[0082] The utility model mainly utilizes that the fuse holder 4 extends out of the opening as the rotating shaft 1 rotates (mainly by directly pulling the handrail 11). During the movement, the fuse 9 on the fuse holder 4 is separated from the copper sheet 3 until the positioning block on the fuse holder 4 supports the outer wall of the shell. At this time, the fuse 9 to be replaced is directly extracted from the second hollow inner cavity 21 on the fuse holder 4, and then a new fuse 9 is replaced. Then, the handrail 11 is held with the assistance of the rotating shaft 5 to rotate the fuse holder 4 in the opposite direction, so that the fuse holder 4 enters the first hollow inner cavity 23 inside the shell 1 through the opening, and the fuse 9 is sleeved in the copper sheet 3 from head to tail. In addition, the positioning plate on the fuse holder 4 is overlapped on the mounting plate, which means that the fuse holder 4 is in place inside the shell 1, so that it forms an energized circuit with the device inside the fuse. Compared with the prior art, the fuse adopts a modular design. When the fuse 9 is broken, there is no need to replace the entire fuse, and only the fuse 9 can be replaced, thereby reducing the use cost.

[0083] Example 2

[0084] like Figure 4-13As shown in the figure, a surge combined electrical apparatus containing the above fuse includes the fuse in Embodiment 1.

[0085] The surge combined electrical apparatus further includes three surge modules 17 and three wiring boards 15. The three surge modules 17 and the three wiring boards 15 are both installed on the housing 1, and each wiring board 15 is located below the surge module 17. The three surge modules 17 are defined as the first surge module, the second surge module, and the third surge module, and the three wiring boards 15 are defined as the first wiring board, the second wiring board, and the third wiring board.

[0086] The copper sheet 3 at the head end of the fuse wire 9 in one of the fuses is electrically connected to one of the first connection terminals 13 through a guiding fixing column, and the copper sheet 3 at the tail end of the fuse wire 9 is electrically connected to the second connection terminal 14 through a guiding fixing column, the first wiring board, the first surge module, the third wiring board, the third surge module in sequence.

[0087] The copper sheet 3 at the head end of the fuse wire 9 in another fuse is electrically connected to another first connection terminal 13 through a guiding fixing column, and the copper sheet 3 at the tail end of the fuse wire 9 is electrically connected to the second connection terminal 14 through a guiding fixing column, the second wiring board, the second surge module, the third wiring board, the third surge module in sequence.

[0088] The first surge module, the second surge module, and the third surge module are arranged in a "pin" shape on the housing 1, and the first wiring board, the second wiring board, and the third wiring board are also arranged in a "pin" shape on the housing 1. And the two fuses are located on both sides of the first surge module, the second surge module, and the third surge module arranged in a "pin" shape on the housing.

[0089] Adopting the above solution, a first power-on loop is formed by the first connection terminal 13 on one side of the housing 1, the fuse, the first wiring board, the first surge module, the third wiring board, the third surge module, and the second connection terminal, and a second power-on loop is formed by the first connection terminal 13 on the other side of the housing 1, the fuse, the second wiring board, the second surge module, the third wiring board, the third surge module, and the second connection terminal 14. In actual application, the two power-on loops (i.e., the first power-on loop and the second power-on loop) are connected to the incoming line and the outgoing line. The two surge modules 17 in each loop are connected in series. Compared with the prior art, the protection voltage is higher, thus increasing the protection level.

[0090] A third connection terminal 18 is also provided in the surge combined electrical apparatus. The third connection terminal 18 is electrically connected to the third wiring board and is used to test whether the conduction voltage of each module meets the requirements during factory testing.

[0091] The surge module 17 in the surge combined electrical apparatus is arranged in a "pin" - shaped structure on the housing 1, and the two fuses are respectively located on both sides of the surge module 17 in the "pin" - shaped structure. This arrangement makes the structure of the surge combined electrical apparatus in the present utility model small, compact, and with a small volume, thus reducing the production cost.

[0092] It should also be noted that the guiding fixing column electrically connected to the terminal and the copper sheet 3 at the head end of the fuse 9 are integrally formed. The copper sheet 3 at the tail end of the fuse 9, the guiding fixing column, and the first wiring board are integrally formed, or the copper sheet 3 at the tail end of the fuse 9, the guiding fixing column, and the second wiring board are integrally formed.

[0093] The surge combined electrical apparatus further includes a PCB board 30. A second remote alarm module 27 is also provided on the PCB board 30 and corresponds to the surge module 17. A contact rod 26 is provided at the bottom of the surge module 17. When the contact rod 26 contacts the second remote alarm module 27, the second remote alarm module 27 also gives a remote alarm at this time.

[0094] A second color - indicating strip 28 is provided on the surge module 17. When the second remote alarm module 27 gives an alarm, the second color - indicating strip 28 shows a color change at the same time.

[0095] It should be noted that the function of the surge protection module 17 used in the present utility model is mostly the same as that of the surge protectors on the market. For example, for the surge module with the model SYU - 40, the operating mechanism on this surge module 17 can not only cause the color change of the second color - indicating strip 28 (the second color - indicating strip 28 is also composed of red and green), but also drive the contact rod 26 to move towards the second remote alarm module 27 until it contacts the second remote alarm module 27 and gives an alarm to the background.

[0096] Furthermore, it should be noted that a communication module 29 is provided on the PCB board 30, and the first remote alarm module 7 is also arranged on the PCB board 30. Both the first remote alarm module 7 and the second remote alarm module 27 are electrically connected to the communication module 29. When the conduction - indicating bracket 8 contacts the contact point on the first remote alarm module 7, the first remote alarm module 7 conducts and transmits the alarm situation to the remote computer through the communication module 29, facilitating knowing whether the fuse is blown on - site in the background; or the contact rod 16 on the surge module 17 is conducted with the second remote alarm module 27 with the assistance of its internal operating mechanism and transmits the alarm situation to the remote computer through the communication module 29, facilitating knowing whether the surge module is damaged on - site in the background.

[0097] In the utility model, after the fuse 9 is blown, the ejector pin 19 on the fuse 9 moves toward the conduction indication bracket 8. Since the conduction indication bracket 8 is directly embedded in the fuse bracket 4, the ejector pin 19 pushes the conduction indication bracket 8 open relative to the fuse bracket 4 during movement (mainly the ejector pin 9 and the conduction indication bracket 8 are in surface contact). During the movement of the conduction indication bracket 8, both ends of the conduction indication bracket 8 move in the same direction, that is, one end moves toward the first remote alarm module 7 (mainly the micro switch) until it contacts the first remote alarm module 7 and sends an alarm to the remote. At the same time, the other end of the conduction indication bracket 8 presses down the spring 20. At this time, the color of the first color indicator strip 10 on the other end changes from green to red, that is, it is displayed on site which fuse on the surge combination electrical appliance is damaged, which is convenient for maintenance personnel to find on site, improves work efficiency and reduces maintenance costs.

[0098] It should be specially noted that the functions of the surge protection module 17 used in the utility model are mostly the same as those of surge protectors on the market. The operating mechanism on the surge protection module 17 can, on the one hand, cause the second color indicator bar 28 to change color, i.e., provide on-site indication. At the same time, on the other hand, it can also drive the contact rod 26 to contact the second remote alarm module 27 (mainly a micro switch) on the PCB board 30, so that the second remote alarm module 27 can send remotely through the communication module 29, i.e., remote alarm, so that it is known that the surge module 17 is damaged and when repairing, the position of the damaged surge module 17 can be easily known, thereby facilitating repair.

[0099] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A fuse, comprising a housing, wherein a first hollow inner cavity is provided inside the housing, and a fuse module is rotatably mounted in the first hollow inner cavity; characterized in that: The fuse module includes a fuse holder and a conduction indication holder, wherein a fuse is sleeved on the fuse holder, the conduction indication holder is embedded in the fuse holder, and one end of the conduction indication holder corresponds to the first remote alarm module located in the first hollow inner cavity; a through hole is provided on the top of the shell, and a first color indicator strip is provided on the other end of the conduction indication holder, and the first color indicator strip corresponds to the through hole; Two groups of copper sheets are installed in the first hollow inner cavity, corresponding to the head and tail of the fuse. After the fuse holder is rotated, the two ends of the fuse are stuck in the two groups of copper sheets. An opening is provided on one side wall of the housing, and the fuse holder rotates inside the housing and extends out of the housing through the opening, so that the fuse can be replaced outside the housing. The bottom of the fuse corresponds to the conduction indication bracket; when the fuse blows, the fuse moves against the conduction indication bracket, so that the conduction indication bracket moves away from the fuse bracket until one end of the conduction indication bracket contacts and conducts with the first remote alarm module, which is convenient for feedback of the on-site situation to the background. At the same time, the first color indicator bar on the other end is displayed on the shell through the through hole, which is convenient for distinguishing whether the fuse module is normal according to the color on the first color indicator bar.

2. A fuse according to claim 1, characterized in that: A rotating shaft is rotatably sleeved in the first hollow inner cavity, the fuse holder is sleeved on the rotating shaft, and the fuse holder extends out of the opening or into the first hollow inner cavity through the rotation of the rotating shaft; The fuse holder is provided with a second hollow inner cavity, and serial ports are arranged at the upper and lower ends thereof, through which the fuse is placed in the fuse holder or taken out from the fuse holder, so that the fuse is easily replaced.

3. A fuse according to claim 2, characterized in that: The rotating shaft is installed at the lower part of the first hollow inner cavity, and a positioning block is installed on the fuse holder, and the positioning block is close to the rotating shaft. When the fuse holder extends out of the opening, the positioning block contacts and supports the outer wall of the shell. At this time, the fuse holder is exposed outside the shell, and the fuse is pulled out or inserted through the serial port on the fuse holder to replace the fuse; A strap is provided on the top side wall of the first hollow inner cavity, and a positioning plate is provided on the fuse holder. When the positioning plate is overlapped on the strap, the fuse holder is located in the first hollow inner cavity, and the head and tail ends of the fuse are respectively stuck in two groups of copper sheets, and the two ends of the head end of the fuse are respectively in contact with the two groups of copper sheets and electrically conductive. A first terminal is provided at one end of the shell, and one end of the copper sheet at the head end of the fuse is fixed to and electrically connected to the first terminal through a conductive fixing column, and one end of the copper sheet at the tail end of the fuse is fixed to the shell through a conductive fixing column.

4. A fuse according to claim 3, characterized in that: The copper sheet is annular in structure and is provided with a placement opening along its axial direction to facilitate the insertion of the fuse into the copper sheet; The copper sheet includes two supporting sections, two placing sections and two closing sections, a connecting section and a limiting ring, and each supporting section, placing section and closing section are connected in sequence, the two supporting sections are connected to the connecting section, and the outer side walls of the placing sections expand outward toward the outer side walls of the supporting sections, and the two closing sections are provided with placing openings, the two end portions of the limiting ring are installed on the outer side walls of the two closing sections, and the middle position of the limiting ring is sleeved on the conductive fixing column.

5. A fuse according to claim 2, characterized in that: A third hollow inner cavity is provided in the fuse holder, and the third hollow inner cavity is communicated with the second hollow inner cavity. One end of the conduction indication holder is located in the first hollow inner cavity, and the other end is located in the third hollow inner cavity. A reset mechanism is provided in the third hollow inner cavity, and the conduction indication holder is sleeved on the reset mechanism. When a new fuse is replaced in the fuse holder, the conduction indication holder is reset under the action of the reset mechanism. At this time, the color of the first color indicator bar on the conduction indication holder is changed, so that the staff can know that it has returned to normal.

6. A fuse according to claim 5, characterized in that: The reset mechanism is a spring, which is arranged in the third hollow inner cavity. A bearing platform is provided on the conduction indication bracket, and the bearing platform is sleeved on the spring; when the ejector pin abuts against the conduction indication bracket, the spring is in a compressed state, the color of the first color indicator bar is green, and the fuse is in a normal state; when the ejector pin pushes against the conduction indication bracket and moves away from the fuse bracket, the spring is still in a compressed state until the color of the first color indicator bar changes from green to red, at which time it displays red, and the fuse is in a blown fuse state; when a new fuse is replaced, the conduction indication bracket is reset under the action of the spring and abuts against the ejector pin on the replaced fuse, at which time the color of the first color indicator bar changes from red to green, and the fuse is in a normal state.

7. A surge combination appliance, characterized in that: A fuse comprising the fuse described in any one of claims 1 to 6.

8. A surge combination device according to claim 7, characterized in that: The surge combination appliance further comprises three surge modules and three wiring boards, and the three surge modules and the three wiring boards are all mounted on the housing, and each of the wiring boards is located below the surge module, the three surge modules are defined as a first surge module, a second surge module and a third surge module, and the three wiring boards are defined as a first wiring board, a second wiring board and a third wiring board; The copper sheet at the head end of the fuse in one of the fuses is electrically connected to one of the first wiring terminals through the guide fixing column, and the copper sheet at the tail end of the fuse is electrically connected in sequence through the guide fixing column, the first wiring board, the first surge module, the third wiring board, the third surge module, and the second wiring terminal; The copper sheet at the head end of the fuse in another fuse is electrically connected to another first terminal through a guide fixing column, and the copper sheet at the tail end of the fuse is electrically connected in sequence through a guide fixing column, a second terminal board, a second surge module, a third terminal board, a third surge module, and a second terminal.

9. A surge combination device according to claim 8, characterized in that: The first surge module, the second surge module and the third surge module are arranged in a "pin" shape on the housing. The first wiring board, the second wiring board and the third wiring board are also arranged in a "pin" shape on the housing, and the two fuses are located on both sides of the first surge module, the second surge module and the third surge module arranged in a "pin" shape on the housing.

10. A surge combination device according to claim 9, characterized in that: The surge combined electrical apparatus further includes a PCB board, and a second remote alarm module is also provided on the PCB board. A contact rod is provided at the bottom of the surge module. When the contact rod contacts the second remote alarm module, the second remote alarm module alarms at this time. A second color indicating strip is provided on the surge module. When the second remote alarm module alarms, the second color indicating strip shows a color change at the same time.

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