CN216851292U - Varistor with self-checking function and surge protector thereof - Google Patents

Abstract

The utility model discloses a piezoresistor with a self-checking function, which comprises a piezoresistor body and a fixing plate, wherein a resetting mechanism is arranged on the front surface of the fixing plate, the resetting mechanism comprises a sleeve, a first spring, a connecting rod and an electromagnet, and a connecting block is arranged at the lower end of the connecting rod. The temperature sensor, the alarm, the display lamp and the reset mechanism are used in a matched mode to detect the temperature of the piezoresistor during working, the display lamps with different colors are turned on to represent different working temperatures of the piezoresistor, when the temperature reaches a thermal limit value, the alarm gives an alarm to remind a worker of replacing the piezoresistor in time, the piezoresistor is connected with a circuit through a wiring socket, replacement and maintenance are facilitated, meanwhile, the temperature sensor is further provided with an upper shell, a lower shell, a fixing mechanism and a second spring, the fixing column is rotated to enable the limiting block to be close to the fixing block, the upper shell and the lower shell are mounted and dismounted conveniently and rapidly, and the shells are not prone to damage.

Description

Varistor with self-checking function and surge protector thereof

Technical Field

The utility model relates to the technical field of electrical protection equipment, in particular to a piezoresistor with a self-checking function and a surge protector thereof.

Background

The varistor often uses as overvoltage protection device, and when varistor when bearing overvoltage energy, its temperature continuously rises, when reaching varistor's the limit of bearing, the thermal destruction fault condition appears in the varistor, just can continue to play the guard action after needing to change, generally just is provided with varistor among the current voltage limiting type surge protector, and the varistor surge protector of current area self-checking function has following problem in the use:

1. the piezoresistor can not display the working condition, a user can not observe the working state of the piezoresistor, if the piezoresistor is damaged, the piezoresistor can not be found and replaced in time, the protection of a circuit is influenced, and the replacement of the piezoresistor is inconvenient;

2. the existing protector shell is connected and fixed by adopting a buckle or a bolt, and when the protector shell is detached, the shell is easily damaged and is not easily detached.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a piezoresistor with a self-checking function and a surge protector thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a take piezo-resistor of self-checking function, includes piezo-resistor body and fixed plate, canceling release mechanical system is installed in the front of fixed plate, canceling release mechanical system includes sleeve, first spring, connecting rod, electro-magnet, the connecting block is installed to the lower extreme of connecting rod, it is fixed that the hot melt adhesive is passed through with the piezo-resistor body to the connecting block, install temperature sensor on the sleeve, the alarm is installed on the right side of fixed plate, three display lamp is installed to the downside that the alarm was reported to the fixed plate, electro-magnet, temperature sensor, alarm, display lamp all with outside terminal controller electric connection.

Preferably, the sleeve is fixed on the fixing plate through a bolt, the first spring is fixed in the sleeve through a bolt, the connecting rod is fixed on the first spring through a bolt, the electromagnet is fixed on the connecting rod through a bolt, and an iron block is installed at the lower end of the electromagnet on the fixing plate.

Preferably, three the colour from the top down of display lamp is red, yellow, green in proper order, install two on the fixed plate and the piezo-resistor body two pin cooperation wiring sockets of using, wiring socket and external circuit electric connection.

The utility model provides a surge protector, includes a varistor who takes self-checking function, still include casing and lower casing, the edge part of casing separately is equipped with a plurality of recesses down, a plurality of spacing grooves have been seted up in the recess, a plurality of fixed blocks are installed to the bottom of going up the casing, the cavity has been seted up in the fixed block, install fixed establishment in the cavity.

Preferably, the fixing mechanism comprises a fixing column, two connecting columns and a fixing rod, the fixing column is installed in the cavity through a bearing, the two connecting columns are hinged to the fixing column, the fixing rod is hinged to the fixing column, the tail end of the fixing rod sequentially penetrates through the fixing block and the fixing block in sliding connection, the tail end of the fixing rod is fixedly provided with a limiting block through a bolt, the limiting block is slidably connected with a limiting groove, a reset plate is fixedly arranged on the fixing rod through a bolt, a second spring is fixedly arranged on the reset plate through a bolt, the second spring is fixedly arranged on the inner wall of the cavity through a bolt, and the upper end of the fixing column penetrates through the fixing block, the upper shell and is slidably connected with the upper shell.

Preferably, the number of the fixed blocks and the number of the grooves are four, the fixed blocks are connected with the grooves in a sliding mode, the fixed plate is installed on the lower shell through bolts, and the upper shell is made of transparent materials.

Compared with the prior art, the utility model has the beneficial effects that:

1. the temperature sensor, the alarm, the display lamp and the reset mechanism are matched for use, the temperature of the piezoresistor during working is detected, when the temperature is normal, the quantity of green display lamps is increased, when the temperature is higher than a normal value and lower than a thermal limit value, the yellow display lamp is turned on, when the temperature reaches the thermal limit value, the red display lamp is turned on, the electromagnet is controlled to be powered off, the connecting rod is pulled to move through the elasticity of the first spring, the pin of the piezoresistor body is driven to be separated from the wiring socket, the circuit is broken, meanwhile, the alarm gives an alarm, a worker is reminded of replacing the piezoresistor in time, and the piezoresistor is connected with a circuit through the wiring socket, so that the replacement and the maintenance are convenient;

2. the utility model is also provided with an upper shell, a lower shell, a fixing mechanism and a second spring which are matched for use, and the fixing column is rotated, so that the limiting block is close to the fixing block, the upper shell and the lower shell are conveniently and rapidly installed and detached, the shells are not easy to damage, and the utility model has the advantages of convenient use and good use effect.

Drawings

FIG. 1 is a schematic diagram of a structure of a varistor with a self-checking function;

FIG. 2 is a side cross-sectional view of a surge protector;

FIG. 3 is a schematic view of the installation of a varistor and a lower case with a self-test function;

fig. 4 is an enlarged view of the structure at a in fig. 2.

In the figure: 1. a varistor body; 2. a fixing plate; 3. a reset mechanism; 31. a sleeve; 32. a first spring; 33. a connecting rod; 34. an electromagnet; 4. connecting blocks; 5. a temperature sensor; 6. an alarm; 7. a display lamp; 8. an iron block; 9. a wiring socket; 10. an upper housing; 11. a lower housing; 12. a fixed block; 13. a fixing mechanism; 131. fixing a column; 132. connecting columns; 133. fixing the rod; 14. a limiting block; 15. a reset plate; 16. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a varistor with a self-checking function comprises a varistor body 1 and a fixing plate 2, wherein a resetting mechanism 3 is installed on the front surface of the fixing plate 2, the resetting mechanism 3 comprises a sleeve 31, a first spring 32, a connecting rod 33 and an electromagnet 34, a connecting block 4 is installed at the lower end of the connecting rod 33, the connecting block 4 and the varistor body 1 are fixed through hot melt adhesive, a temperature sensor 5 is installed on the sleeve 31, an alarm 6 is installed on the right side of the fixing plate 2, three display lamps 7 are installed on the lower side of the alarm 6 on the fixing plate 2, and the electromagnet 34, the temperature sensor 5, the alarm 6 and the display lamps 7 are all electrically connected with an external terminal controller;

sleeve 31 passes through the bolt fastening on fixed plate 2, first spring 32 passes through the bolt fastening in sleeve 31, connecting rod 33 passes through the bolt fastening on first spring 32, electro-magnet 34 passes through the bolt fastening on connecting rod 33, iron plate 8 is installed to the lower extreme of electro-magnet 34 on fixed plate 2, the colour from the top down of three display lamp 7 is red in proper order, yellow, green, install on fixed plate 2 two with piezo-resistor body 1 on two wiring socket 9 that the cooperation of two pins used, wiring socket 9 and external circuit electric connection.

Referring to fig. 2-4, the present invention provides a technical solution: a surge protector comprises a piezoresistor with a self-checking function, and further comprises an upper shell 10 and a lower shell 11, wherein a plurality of grooves are formed in the edge part of the lower shell 11, a plurality of limiting grooves are formed in the grooves, a plurality of fixing blocks 12 are mounted at the bottom of the upper shell 10, cavities are formed in the fixing blocks 12, and fixing mechanisms 13 are mounted in the cavities;

the fixing mechanism 13 includes a fixing column 131 and two connecting columns 132, the fixing rod 133 is installed in the cavity through a bearing, the fixing column 131 is hinged to the fixing column 131 through two connecting columns 132, the fixing rod 133 is hinged to the fixing column 131, the tail end of the fixing rod 133 sequentially penetrates through the fixing block 12 and is in sliding connection with the fixing block 12, the tail end of the fixing rod 133 is fixedly provided with the limiting block 14 through a bolt, the limiting block 14 is in sliding connection with the limiting groove, the fixing rod 133 is fixedly provided with the resetting plate 15 through a bolt, the resetting plate 15 is fixedly provided with the second spring 16 through a bolt, the second spring 16 is fixedly provided with the inner wall of the cavity through a bolt, the upper end of the fixing column 131 penetrates through the fixing block 12, the upper shell 10 is in sliding connection with the upper shell 10, the number of the fixing block 12 and the number of the grooves are four, the fixing block 12 is in sliding connection with the grooves, the fixing plate 2 is installed on the lower shell 11 through a bolt, and the upper shell 10 is made of a transparent material.

The working principle is as follows: when the temperature control device is used, the temperature range during normal work, the temperature range during high-temperature work and the temperature range of the thermal limit value are set according to the limit value of the piezoresistor, the temperature during working of the piezoresistor is detected by the temperature sensor 5, when the temperature is at the temperature during normal work, the quantity of the green display lamps 7 is increased, when the temperature is at the temperature during high-temperature work, the yellow display lamps 7 are lightened, when the temperature reaches the thermal limit value, the electromagnet 34 is controlled to be powered off, the connecting rod 33 is pulled to move by the elastic force of the first spring 32, the pins of the piezoresistor body 1 are driven to be separated from the wiring socket 9 to form an open circuit, meanwhile, the red display lamps 7 are lightened, the alarm 6 gives an alarm to remind a worker to replace the piezoresistor in time, the piezoresistor is connected with a circuit through the wiring socket 9 to facilitate replacement and maintenance, when the upper shell and the lower shell 11 are disassembled, the fixing column 131 is rotated, thereby it rotates to drive the one end that spliced pole 132 is close to fixed column 131, the one end that is close to dead lever 133 is close to fixed column 131, thorough dead lever 133 is close to fixed column 131, thereby it is close to fixed column 131 to reach fixed block 12 and stopper 14, thereby it is tensile to reach the second spring 16, insert in the recess fixed block 12, loosen the carousel, elasticity through second spring 16, it keeps away from fixed column 131 to drive fixed block 12 and dead lever 133, thereby it inserts the spacing groove to drive stopper 14, thereby it keeps away from fixed column 131 to drive spliced pole 132, thereby pulling fixed column 131 resets, during the dismantlement, it can take off upper housing 10 to rotate fixed column 131, high convenience and fast, and convenient to use has, the advantage that excellent in use effect.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a take piezo-resistor of self-checking function, includes piezo-resistor body (1) and fixed plate (2), its characterized in that: canceling release mechanical system (3) are installed in the front of fixed plate (2), canceling release mechanical system (3) are including sleeve (31), first spring (32), connecting rod (33), electro-magnet (34), connecting block (4) are installed to the lower extreme of connecting rod (33), connecting block (4) and piezo-resistor body (1) fixed connection, install temperature sensor (5) on sleeve (31), alarm (6) are installed on the right side of fixed plate (2), three display lamp (7) are installed to the downside of alarm (6) on fixed plate (2), electro-magnet (34), temperature sensor (5), alarm (6), display lamp (7) all with outside terminal control ware electric connection.

2. The piezoresistor with the self-checking function according to claim 1, characterized in that: sleeve (31) fixed mounting is on fixed plate (2), first spring (32) fixed mounting is in sleeve (31), connecting rod (33) fixed mounting is on first spring (32), electro-magnet (34) fixed mounting is on connecting rod (33), iron plate (8) are installed to the lower extreme of electro-magnet (34) on fixed plate (2).

3. The varistor with self-checking function according to claim 2, characterized in that: it is three the colour from the top down of display lamp (7) is red, yellow, green in proper order, install on fixed plate (2) two with piezo-resistor body (1) go up wiring socket (9) that two pin cooperations were used, wiring socket (9) and external circuit electric connection.

4. A surge protector comprising the varistor with self-checking function as claimed in claim 3, wherein: still include casing (10) and casing (11) down, the edge part of casing (11) separately is equipped with a plurality of recesses down, seted up a plurality of spacing grooves in the recess, a plurality of fixed blocks (12) are installed to the bottom of going up casing (10), seted up the cavity in fixed block (12), install fixed establishment (13) in the cavity.

5. A surge protector according to claim 4, wherein: the fixing mechanism (13) comprises a fixing column (131), two connecting columns (132) and a fixing rod (133), the fixed column (131) is rotatably arranged in the cavity, the two connecting columns (132) are hinged on the fixed column (131), the fixed rod (133) is hinged on the fixed column (131), the tail end of the fixed rod (133) sequentially penetrates through the fixed block (12) and the fixed block (12) is connected in a sliding way, the tail end of the fixing rod (133) is fixedly connected with a limiting block (14), the limiting block (14) is connected with a limiting groove in a sliding manner, a reset plate (15) is fixedly connected on the fixed rod (133), a second spring (16) is fixedly arranged on the reset plate (15), the second spring (16) is fixedly connected with the inner wall of the cavity, and the upper end of the fixing column (131) penetrates through the fixing block (12) and the upper shell (10) and is in sliding connection with the upper shell (10).

6. A surge protector according to claim 4, wherein: the fixed block (12) and the recess are four in number, the fixed block (12) is connected with the recess in a sliding mode, the fixed plate (2) is installed on the lower shell (11) through bolts, and the upper shell (10) is made of transparent materials.

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