Safe explosion-proof capacitor
The capacitors with explosion-proof shells and top covers solve the problems of capacitor explosions damaging circuit boards and cumbersome replacements, achieving safe explosion protection and efficient replacement, and improving the service life and maintenance efficiency of capacitors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-10
AI Technical Summary
Existing capacitors are prone to explosion during use due to overvoltage, overheating, or aging. The fragments generated by the explosion damage the circuit board, and the replacement process is cumbersome. Insufficient heat dissipation design increases the risk of explosion.
It features an explosion-proof shell and top cover design, an internal cooling fan and pressure relief vents, and a blade to cut the pins connected to the capacitor body for quick replacement.
It effectively prevents circuit board damage from capacitor fragments during explosions, improves heat dissipation efficiency, simplifies replacement procedures, and extends service life.
Smart Images
Figure CN224110136U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to capacitor technical field especially relates to a safe explosion -proof capacitor. BACKGROUND
[0002] Capacitor is an energy storage device, it can store and release electric energy, and its basic structure is composed of two mutually close conductors and insulating material clamped between them, when capacitor is connected into circuit, electric charge will accumulate between electrodes, form electric field, thereby store energy.
[0003] In the prior art, capacitor is a common element in electronic circuit, its explosion may occur in the use process due to overvoltage, overheat or aging, and the fragments produced by explosion can splash around the circuit board, damage adjacent electronic components, affect the normal work of the circuit board, the traditional capacitor protection measure usually only adopts simple insulation packaging or fixed support, cannot effectively wrap capacitor body, leads to limited protection effect when exploding, and the pressure produced after explosion can further damage the protection structure, so that it cannot be reused, in addition, the heat dissipation design of capacitor in the prior art is insufficient, and long-time work can easily aggravate the explosion risk due to heat accumulation, and the replacement process of capacitor body after explosion is also relatively cumbersome, usually needs to manually disassemble the welding point or clean the residual pin, low efficiency, affect the maintenance progress, in view of this, provide a safe explosion -proof capacitor to overcome the above defects. UTILITY MODEL CONTENTS
[0004] The utility model aims at solving the shortcomings in the prior art and provides a safe explosion -proof capacitor.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a safe explosion -proof capacitor, including explosion -proof shell, the needle pin is slidably connected in the lower part of the explosion -proof shell, the capacitor body is fixedly connected at the top of the needle pin, the inner thread is arranged at the top of the inner side of the explosion -proof shell, the outer thread ring is spirally connected with the inner thread of the top of the inner side of the explosion -proof shell, the top cap is fixedly connected at the top of the outer thread ring, the heat dissipation fan is fixedly connected at the top of the top cap, the micro motor is fixedly connected at the middle of the top of the heat dissipation fan, the air inlet is formed in the inside of the top cap, the pressure relief and heat dissipation hole is formed in the lower part of the inside of the explosion -proof shell, the hollow shell is fixedly connected at the bottom of the explosion -proof shell, the spring sheet is fixedly connected in the middle of the outer end surface of the hollow shell, the push board is contacted on the outer end surface of the spring sheet, the connecting rod is fixedly connected on the inner end surface of the push board, the blade is fixedly connected on the end, away from the push board, of the connecting rod.
[0006] As the further description of the above technical scheme: the hollow shell inside the outside and the connecting rod outside slide connection, the hollow shell inside the lower side and the blade edge slide connection, the blade inside and the needle foot above the outside contact, can be wrapped capacitor body, avoid the capacitor body explosion when the debris generated by the circuit board around the top electronic components caused damage.
[0007] As the further description of the above technical scheme: the height of the inner thread of the explosion-proof shell inside the top end is consistent with the height of the outer thread ring, and the pitch of the inner thread matches the outer pitch of the outer thread ring, so that the top cover can be fixed above the explosion-proof shell, avoiding the debris produced by the capacitor body explosion.
[0008] As the further description of the above technical scheme: the number of air inlets opened in the top cover inside the top is several, and the air inlets are uniformly distributed in the top of the top cover, and the setting area of the several air inlets in the top of the top cover is in the effective range of the cooling fan, so that the capacitor body can be actively cooled during daily use.
[0009] As the further description of the above technical scheme: the top of the micro motor is provided with an external power line, and the output end of the micro motor is connected with the fan blade of the cooling fan, and the outlet position of the cooling fan is below, which actively cools the outside of the capacitor body from top to bottom through the air inlet, and improves the service life of the capacitor body to a certain extent.
[0010] As the further description of the above technical scheme: the number of hollow shells is two groups, and the hollow shells are distributed on the front and rear sides of the needle foot, the sliding groove is opened in the middle of the hollow shell, and the length of the sliding groove is consistent with the length of the blade, so that the connection between the needle foot and the capacitor body can be quickly cut off after the capacitor body explodes, the capacitor body can be quickly taken out from the explosion-proof shell, and the efficiency of replacing the capacitor body is improved.
[0011] As the further description of the above technical scheme: the number of blades is consistent with the number of hollow shells, and the blade edge of the blade is aligned with the outside of the needle foot above, the blade and the needle foot are in a vertical state, the blade cuts the needle foot arranged longitudinally from outside to inside horizontally, and the capacitor body is quickly separated from the explosion-proof shell.
[0012] The utility model has the following beneficial effects:
[0013] The utility model discloses a safe and explosion -proof capacitor, the design cooperation through the explosion -proof shell and the top cap, make the device can be wrapped capacitor body, avoid the fragment of the explosion of capacitor body produces and causes the damage of the top electronic component around the circuit board, and the top cap top sets up the cooling fan, sets up the pressure relief heat dissipation hole in the explosion -proof shell inside below, not only can in the daily use capacitor body, initiative to capacitor body carries out the heat dissipation, simultaneously avoids the explosion of capacitor body, the pressure in the explosion -proof shell is too big, leads to the damage of explosion -proof shell, cannot the condition of secondary utilization, and the bottom of explosion -proof shell is provided with the blade of pushable, and the blade is at the front and back two sides of the needle foot, can cut off the connection between needle foot and capacitor body after the explosion of capacitor body, the capacitor body is convenient to take out from the explosion -proof shell, improves the efficiency of replacing capacitor body. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the whole structure schematic diagram of the utility model;
[0015] Figure 2 It is the top cap explosion structure schematic diagram of the utility model;
[0016] Figure 3 It is the explosion -proof shell longitudinal section structure schematic diagram of the utility model;
[0017] Figure 4 It is the explosion -proof shell longitudinal overturn 180 structure schematic diagram of the utility model;
[0018] Figure 5 It is the hollow shell longitudinal section structure schematic diagram of the utility model.
[0019] Legend:
[0020] 1, explosion -proof shell;2, needle foot;3, top cap;4, cooling fan;5, micro motor;6, pressure relief heat dissipation hole;7, outer thread ring;8, air inlet;9, capacitor body;10, inner thread;11, hollow shell;12, push plate;13, connecting rod;14, blade;15, spring piece. DETAILED DESCRIPTION
[0021] REFERENCE Figures 1 to 5The utility model provides a kind of safe explosion-proof capacitor, including explosion-proof shell 1, needle foot 2 is fixed in the inside lower portion of explosion-proof shell 1 and is penetrated, needle foot 2 top solder tin fixed capacitor body 9, the inside top of explosion-proof shell 1 is provided with internal thread 10, the internal thread 10 of the inside top of explosion-proof shell 1 is spirally connected by outer thread ring 7, outer thread ring 7 top is welded top cover 3, top cover 3 top is fixed by screw cooling fan 4, the middle of cooling fan 4 top is provided with micro motor 5, top cover 3 inside is provided with air inlet 8, the inside lower portion of explosion-proof shell 1 is provided with pressure relief hole 6, explosion-proof shell 1 bottom is welded hollow shell 11, hollow shell 11 outer end surface middle is welded spring leaf 15, spring leaf 15 outer end surface contact push plate 12, push plate 12 inner end surface is welded connecting rod 13, connecting rod 13 is penetrated the inside of blade 14 and is fixed in one end far from push plate 12;
[0022] The inside of hollow shell 11 is slidably connected with the outside of connecting rod 13, the lower portion of the inside of hollow shell 11 is slidably connected with the edge of blade 14, the inside of blade 14 is in contact with the outside above needle foot 2, the capacitor body 9 can be wrapped, to avoid the damage to the electronic components around the top of the circuit board caused by the fragments generated when the capacitor body 9 explodes.
[0023] As a further embodiment of the above technical solution: the height of the internal thread 10 at the top inside of the explosion-proof shell 1 is consistent with the height of the outer thread ring 7, and the pitch of the internal thread 10 matches the outside pitch of the outer thread ring 7, so that the top cover 3 can be fixed above the explosion-proof shell 1, to avoid the debris generated by the explosion of the capacitor body 9 from splashing outward.
[0024] As a further embodiment of the above technical solution: the number of air inlets 8 opened in the top inside of the top cover 3 is several, and the air inlets 8 are evenly distributed in the top inside of the top cover 3, and the area of the several air inlets 8 in the top inside of the top cover 3 is within the effective range of the cooling fan 4, so that the capacitor body 9 can be actively cooled during daily use.
[0025] As a further embodiment of the above technical solution: the micro motor 5 is provided with an external power cord at the top front side, and the output end of the micro motor 5 is connected with the fan blades in the cooling fan 4, and the air outlet position of the cooling fan 4 is below, to actively cool the outside of the capacitor body 9 from top to bottom through the air inlet 8, to improve the service life of the capacitor body 9 to a certain extent.
[0026] As a further embodiment of the above technical solution: the number of hollow shells 11 is two groups, and the hollow shells 11 are distributed at the front and rear positions of the needle foot 2, a sliding groove is opened in the middle of the inside of the hollow shell 11, and the length of the sliding groove is consistent with the length of the blade 14, so that the connection between the needle foot 2 and the capacitor body 9 can be quickly cut off after the capacitor body 9 explodes, to facilitate the quick removal of the capacitor body 9 from the explosion-proof shell 1, and to improve the efficiency of replacing the capacitor body 9.
[0027] As a further embodiment of the above technical solution: the number of blades 14 is consistent with the number of hollow shells 11, and the cutting edges of the blades 14 are aligned with the outside above the pins 2, and the blades 14 are perpendicular to the pins 2, allowing the blades 14 to cut the longitudinally arranged pins 2 from the outside to the inside, allowing the capacitor body 9 to quickly separate from the explosion-proof shell 1.
[0028] Working principle:
[0029] When using the utility model, the capacitor body 9 is inserted into the explosion-proof shell 1 from top to bottom, the pins 2 at the bottom of the capacitor body 9 enter the explosion-proof shell 1, and then pass out from the bottom of the explosion-proof shell 1, the pins 2 are fixed with the explosion-proof shell 1 by using soldering operation, the outer threaded ring 7 at the bottom of the top cover 3 is inserted into the top end of the explosion-proof shell 1 and rotated, at this time, the outer side of the outer threaded ring 7 is screwed with the inner thread 10 at the top end of the inner wall of the explosion-proof shell 1, until the top cover 3 is tightened, the cooling fan 4 is taken out, the cooling fan 4 is fixed above the top cover 3, and the outer connecting wire at the top of the micro motor 5 is connected with the power supply device, and the pins 2 are fixed by soldering the circuit board, when the capacitor body 9 is used, the micro motor 5 drives the fan blades in the cooling fan 4 to rotate, the wind generated by the fan blades blows from the air inlet 8 in the top cover 3 to the explosion-proof shell 1, actively cooling the surface of the capacitor body 9 in the explosion-proof shell 1, and the heat is discharged from the pressure relief hole 6 at the bottom of the explosion-proof shell 1, even if the capacitor body 9 explodes in the explosion-proof shell 1, the debris generated by the capacitor body 9 is blocked by the explosion-proof shell 1, and the high pressure and heat are discharged through the pressure relief hole 6, and when the capacitor body 9 in the explosion-proof shell 1 is replaced, the push plate 12 at the bottom of the explosion-proof shell 1 can be pressed, the push plate 12 drives the blades 14 in the hollow shell 11 to move to the outside of the pins 2 and cut, allowing the pins 2 to quickly separate from the capacitor body 9, facilitating the capacitor body 9 to be quickly taken out of the explosion-proof shell 1, and improving the efficiency of replacing the capacitor body 9.
[0030] Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A safe and explosion-proof capacitor, comprising an explosion-proof housing (1), characterized in that: The explosion-proof shell (1) has a pin (2) slidably connected to its lower interior. A capacitor body (9) is fixedly connected to the top of the pin (2). An internal thread (10) is provided on the top of the inner side of the explosion-proof shell (1). An external thread ring (7) is spirally connected to the internal thread (10) on the top of the inner side of the explosion-proof shell (1). A top cover (3) is fixedly connected to the top of the external thread ring (7). A cooling fan (4) is fixedly connected to the top of the top of the top cover (3). A micro motor (5) is fixedly connected to the middle of the top of the cooling fan (4). The top cover (3) has an air inlet (8) inside, and the explosion-proof shell (1) has a pressure relief and heat dissipation hole (6) at the bottom inside. The bottom of the explosion-proof shell (1) is fixedly connected to a hollow shell (11). A spring plate (15) is fixedly connected to the middle of the outer end face of the hollow shell (11). The outer end face of the spring plate (15) contacts a push plate (12). A connecting rod (13) is fixedly connected to the inner end face of the push plate (12). A blade (14) is fixedly connected to the end of the connecting rod (13) away from the push plate (12).
2. The explosion-proof capacitor according to claim 1, characterized in that: The hollow shell (11) is slidably connected to the outer side of the connecting rod (13) inside and the lower part of the hollow shell (11) is slidably connected to the edge of the blade (14) inside and the inner side of the blade (14) is in contact with the outer side above the needle (2).
3. The explosion-proof capacitor according to claim 1, characterized in that: The height of the internal thread (10) at the top of the inner side of the explosion-proof shell (1) is consistent with the height of the external thread ring (7), and the pitch of the internal thread (10) matches the pitch of the outer side of the external thread ring (7).
4. The explosion-proof capacitor according to claim 1, characterized in that: The number of air inlets (8) opened inside the top cover (3) is several, and the air inlets (8) are evenly distributed inside the top cover (3). The area of the several air inlets (8) inside the top cover (3) is within the effective range of the cooling fan (4).
5. The explosion-proof capacitor according to claim 1, characterized in that: The micro motor (5) is provided with an external wire on the top front side, and the output end of the micro motor (5) is connected to the fan blades in the cooling fan (4), and the air outlet of the cooling fan (4) is located at the bottom.
6. The explosion-proof capacitor according to claim 1, characterized in that: The number of hollow shells (11) is two sets, and the hollow shells (11) are distributed on the front and back sides of the pin (2). A groove is opened in the middle of the hollow shell (11), and the length of the groove is the same as the length of the blade (14).
7. The explosion-proof capacitor according to claim 1, characterized in that: The number of blades (14) is the same as the number of hollow shells (11), and the blades (14) are aligned with the outer side above the needle (2), and the blades (14) are perpendicular to the needle (2).