CN210516765U

CN210516765U - Power supply box with overvoltage protection function

Info

Publication number: CN210516765U
Application number: CN201921461183.1U
Authority: CN
Inventors: 刘爽
Original assignee: Tianjin Tianjiang Electric Equipment Co Ltd
Current assignee: Tianjin Tianjiang Electric Equipment Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-05-12
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a power pack with overvoltage protection function, including box body and rather than the lid that matches, the box body both ends are fixed respectively and are equipped with a plurality of connector lugs, fixedly connected with casing on the box body inner wall, fixed mounting has piezo-resistor in the casing, the fixed two terminals that are equipped with of casing bilateral symmetry, fixed mounting has press the switch on the box body inner wall, be equipped with the control mechanism who controls press the switch in the casing, piezo-resistor and control mechanism and two terminal series connections, two the terminal is parallelly connected with the power in the power pack, press the power series in switch and the power pack. The utility model discloses have the overvoltage protection function, can provide overvoltage protection, prevent that back level power supply circuit from burning out, and need not restart just can directly use after voltage recovery.

Description

Power supply box with overvoltage protection function

Technical Field

The utility model relates to a power pack technical field especially relates to a power pack with overvoltage protection function.

Background

In electronic products in daily life, a battery is used as a power supply, and a power supply box is a box for storing the power supply. The power supply can be a battery or other built-in power supply, and when the power supply is placed in the battery box, the power supply supplies power to corresponding equipment by utilizing the conducting strip which is arranged in the box body and used as the positive pole of the power supply and the conducting strip which is arranged in the box body and used as the negative pole of the power supply, such as a circuit board, a driving device and the like. The safety of the power supply box is ensured by arranging overvoltage protection in the conventional power supply box.

However, after the power supply is cut off, the overvoltage protection device in the conventional power supply box cannot recover power supply independently after voltage recovery, and is inconvenient to operate manually.

To this end, we propose a power supply box with an overvoltage protection function to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a power supply box with an overvoltage protection function.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a power pack with overvoltage protection function, includes box body and rather than the lid that matches, the box body both ends are fixed respectively and are equipped with a plurality of connector lugs, fixedly connected with casing on the box body inner wall, fixed mounting has piezo-resistor in the casing, the fixed two terminals that are equipped with of casing bilateral symmetry, fixed mounting has press the switch on the box body inner wall, be equipped with the control mechanism who controls press the switch in the casing, piezo-resistor and control mechanism and two terminal series, two power in terminal and the power pack is parallelly connected, press the switch and establish ties with the power in the power pack.

Preferably, control mechanism is including setting up the slider in the casing, be equipped with the spout that matches with the slider on the shells inner wall, be equipped with the metal block with slider fixed connection in the casing, the metal block is close to fixedly connected with control lever on press switch's the terminal surface, the one end that the metal block was kept away from to the control lever run through the casing and with press switch's the position fixed connection that presses, be equipped with the electro-magnet between metal block and the casing, electro-magnet and piezo-resistor and two terminal series, the cover is equipped with the spring on the control lever, spring one end and casing fixed connection, and the spring other end and press switch and press a fixed connection.

Preferably, the box body is close to fixedly on the terminal surface of lid and is equipped with the sealed piece of annular, be equipped with the annular groove who matches with the sealed piece of annular on the lid, the annular groove internal fixation is equipped with sealed the pad, the box body is through a plurality of bolts and lid fixed connection.

Preferably, the shell is made of an insulating material.

Preferably, the box body and the box cover matched with the box body are made of insulating materials.

Preferably, a plurality of ceramic heat conducting fins communicated with the outside are arranged on the box body and the box cover matched with the box body in a penetrating mode.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the piezo-resistor parallelly connected with the power, set up the electro-magnet of establishing ties with piezo-resistor simultaneously, when voltage is too big, the piezo-resistor circular telegram for the electro-magnet circular telegram produces magnetic force, has attracted the metal block and has removed the control lever, makes push switch close, and when voltage recovery back, the piezo-resistor outage changes down in the effect of spring, and the control lever resets and makes push switch open, can provide overvoltage protection, need not restart after voltage recovery just can the direct use.

Drawings

Fig. 1 is a schematic structural diagram of a power supply box with an overvoltage protection function according to the present invention;

fig. 2 is a schematic rear view of a box body of a power box with an overvoltage protection function according to the present invention;

fig. 3 is a schematic structural diagram at a in fig. 1.

In the figure: the device comprises a box body 1, a box cover 2, a connector lug 3, a shell 4, a piezoresistor 5, a connector lug 6, a press switch 7, a control mechanism 8, a metal block 9, a control rod 10, an electromagnet 11, a spring 12, an annular sealing block 13 and a sliding block 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a power supply box with overvoltage protection function comprises a box body 1 and a box cover 2 matched therewith, wherein the box body 1 and the box cover 2 matched therewith are made of insulating materials, so as to have insulating effect and increase safety, a plurality of ceramic heat conducting fins communicated with the outside are arranged on the box body 1 and the box cover 2 matched therewith in a penetrating manner, so as to dissipate heat of internal electronic components and avoid influence of temperature, and no electric conduction effect is generated, an annular sealing block 13 is fixedly arranged on the end surface of the box body 1 close to the box cover 2, an annular groove matched with the annular sealing block 13 is arranged on the box cover 2, a sealing gasket is fixedly arranged in the annular groove, so as to increase sealing performance and avoid dust entering, so as to increase safety, the box body 1 is fixedly connected with the box cover 2 through a plurality of bolts, a plurality of connector lugs 3 are respectively fixedly arranged at two ends of the box body 1 for connection, a shell 4 is fixedly connected, the shell 4 is made of insulating materials and increases safety, the piezoresistor 5 is fixedly arranged in the shell 4, when the voltage applied on the piezoresistor 5 is lower than the threshold value thereof, the current flowing through the piezoresistor is extremely small and is equivalent to a resistor with infinite resistance, namely, when the voltage applied on the piezoresistor is lower than the threshold value thereof, the piezoresistor is equivalent to a switch in an open state, when the voltage applied on the piezoresistor 5 exceeds the threshold value thereof, the current flowing through the piezoresistor is increased sharply and is equivalent to a resistor with infinite resistance, namely, when the voltage applied on the piezoresistor is higher than the threshold value thereof, the piezoresistor is equivalent to a switch in a closed state, two binding posts 6 are symmetrically and fixedly arranged on two sides of the shell 4, the press switch 7 is fixedly arranged on the inner wall of the box body 1, and the press switch 7 adopts the.

Wherein, a control mechanism 8 for controlling the press switch 7 is arranged in the shell 4, the piezoresistor 5 and the control mechanism 8 are connected with the two terminals 6 in series, the control mechanism 8 comprises a slide block 14 arranged in the shell 4, a slide groove matched with the slide block 14 is arranged on the inner wall of the shell 4, a metal block 9 fixedly connected with the slide block 14 is arranged in the shell 4, the metal block 9 can slide, a control rod 10 is fixedly connected on the end surface of the metal block 9 close to the press switch 7, one end of the control rod 10 far away from the metal block 9 penetrates through the shell 4 and is fixedly connected with the pressing position of the press switch 7, the control rod 10 can press the press switch 7 to control the opening and closing of the metal block 9, an electromagnet 11 is arranged between the metal block 9 and the shell 4, the electromagnet 11 can generate suction after being electrified, the electromagnet 11 is connected with the piezoresistor 5 and the two terminals 6 in series, a spring, the other end of the spring 12 is fixedly connected with a pressing part of the press switch 7, the spring 12 provides elasticity, the closing state of the press switch 7 is guaranteed under the condition of no external force, the two wiring terminals 6 are connected in parallel with a power supply in the power supply box, and the press switch 7 is connected in series with the power supply in the power supply box.

The utility model discloses in, when voltage is too big, because piezo-resistor 5's characteristic, piezo-resistor 5 circular telegram, 11 circular telegrams of electro-magnet of establishing ties with piezo-resistor 5 produce magnetic force, attract metal block 9, thereby drive metal block 9 and remove, metal block 9 drives control lever 10 and removes and close push switch 7, cut off the power, after voltage recovery, piezo-resistor 5 resumes the outage effect, make electro-magnet 1 not being circular telegram, metal block 9 loses by the appeal, under spring 12's effect, control lever 10 resets, push switch 7 opens, realize resuming the circular telegram.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a power pack with overvoltage protection function, includes box body (1) and rather than lid (2) that match, its characterized in that, box body (1) both ends are fixed respectively and are equipped with a plurality of connector lugs (3), fixedly connected with casing (4) on box body (1) inner wall, fixed mounting has piezo-resistor (5) in casing (4), casing (4) bilateral symmetry is fixed and is equipped with two terminals (6), fixed mounting has press down switch (7) on box body (1) inner wall, be equipped with control mechanism (8) of control press down switch (7) in casing (4), piezo-resistor (5) and control mechanism (8) establish ties with two terminals (6), two power in terminal (6) and the power pack is parallelly connected, press down switch (7) and establish ties with the power in the power pack.

2. The power supply box with the overvoltage protection function according to claim 1, wherein the control mechanism (8) comprises a sliding block (14) arranged in the casing (4), a sliding groove matched with the sliding block (14) is formed in the inner wall of the casing (4), a metal block (9) fixedly connected with the sliding block (14) is arranged in the casing (4), a control rod (10) is fixedly connected to the end face, close to the press switch (7), of the metal block (9), one end, far away from the metal block (9), of the control rod (10) penetrates through the casing (4) and is fixedly connected with the press position of the press switch (7), an electromagnet (11) is arranged between the metal block (9) and the casing (4), the electromagnet (11) is connected with the piezoresistor (5) in series with the two binding posts (6), a spring (12) is sleeved on the control rod (10), one end of the spring (12) is fixedly connected with the shell (4), and the other end of the spring (12) is fixedly connected with a pressing part of the press switch (7).

3. The power supply box with the overvoltage protection function according to claim 1, wherein an annular sealing block (13) is fixedly arranged on the end face, close to the box cover (2), of the box body (1), an annular groove matched with the annular sealing block (13) is arranged on the box cover (2), a sealing gasket is fixedly arranged in the annular groove, and the box body (1) is fixedly connected with the box cover (2) through a plurality of bolts.

4. The power supply box with overvoltage protection function as claimed in claim 1, characterized in that the housing (4) is made of insulating material.

5. The power supply box with the overvoltage protection function according to claim 1, wherein the box body (1) and the matched box cover (2) are made of insulating materials.

6. The power supply box with the overvoltage protection function according to claim 1, wherein a plurality of ceramic heat conducting strips communicated with the outside are arranged on the box body (1) and the matched box cover (2) in a penetrating manner.