A safe explosion-proof capacitor

Abstract

The utility model discloses a safe type explosion -proof capacitor relates to capacitor technical field, including capacitor main part, and the top of capacitor main part is equipped with circular recess, and the groove bottom of circular recess is equipped with guide groove, and the outside wall top of capacitor main part is equipped with extension groove. The utility model discloses through setting up guide groove, extension groove, breakage groove and guide groove, and guide groove and guide groove all are located in the top of capacitor main part, and guide groove and guide groove constitute the direction arrow structure, when capacitor main part inside pressure is too big, its top can unidirectionally crack along guide groove and guide groove, and the side of capacitor main part can along breakage groove and explode, to control the direction when capacitor main part burst, through setting up C type hoop and diaphragm, and diaphragm can shield the burst position of capacitor main part, to avoid the electrolyte in capacitor main part when burst, and the rest structure in circuit is splashed to the influence in circuit, thereby improved the safe type of circuit operation.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to a safety explosion-proof capacitor. Background Technology

[0002] As a fundamental component, capacitors are widely used in power electronic equipment. A capacitor consists of two conductors close together, with a non-conductive insulating medium sandwiched between them. When a voltage is applied between the two plates of a capacitor, it stores charge. The capacitance of a capacitor is numerically equal to the ratio of the charge on one plate to the voltage between the two plates. The basic unit of capacitance is the farad (F), usually represented by the letter C in circuit diagrams. Capacitors play an important role in tuning, bypassing, coupling, and filtering circuits. They are used in the tuning circuits of transistor radios, as well as in the coupling and bypass circuits of color televisions. When a capacitor malfunctions and causes an increase in internal pressure, the capacitor casing may expand, deform, or even explode. To prevent this, cutting off the voltage to the capacitor to create an open circuit ensures that the consequences of capacitor failure are controllable.

[0003] Capacitors in the prior art are typically equipped with explosion-proof cracks. When the internal pressure of the capacitor becomes too high, the capacitor casing will burst to release the pressure, thereby reducing the explosive force of the explosion. However, once the capacitor casing cracks, the internal electrolyte solution can easily leak out from the cracks and adhere to the substrate on which the capacitor is mounted or other electronic components, which can lead to abnormal phenomena such as short circuits or leakage.

[0004] Therefore, it is necessary to invent a safe explosion-proof capacitor to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a safe explosion-proof capacitor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety explosion-proof capacitor, comprising a capacitor body, a circular groove at the top of the capacitor body, a guide groove at the bottom of the circular groove, an extension groove at the top of the outer side wall of the capacitor body, one end of the extension groove being connected to one end of the guide groove, a rupture groove on the outer side wall of the capacitor body, the rupture groove being configured as two sets of symmetrical sawtooth structures, the top of the rupture groove being located below the bottom of the extension groove, and two guide grooves at the bottom of the circular groove, both guide grooves being configured as inclined structures, and one end of both guide grooves being connected to one end of the guide groove;

[0007] The capacitor body has an annular positioning groove at the top of its outer side wall. A C-shaped clamp is engaged inside the positioning groove. A diaphragm is fixed below the C-shaped clamp and is located outside the rupture groove.

[0008] Preferably, a connecting plate is fixedly provided in the middle of the C-shaped hoop, and the connecting plate is located inside the extension groove.

[0009] Preferably, the top of the connecting plate is fixedly provided with an end plate, and the end plate is located inside the circular groove.

[0010] Preferably, both ends of the C-shaped hoop are fixed with positioning blocks, and the positioning blocks are spherical structures.

[0011] Preferably, the positioning groove has two symmetrically distributed slots inside, both of which are spherical structures, and the two positioning blocks are respectively located inside the two slots.

[0012] Preferably, the bottom end of the capacitor body is fixedly provided with two pins.

[0013] Preferably, the C-shaped hoop is an elastic structure, and the diaphragm is an insulating and thermally conductive silicone pad.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model provides a guide groove, an extension groove, a rupture groove, and a guide groove. The guide groove and the guide groove are both located at the top of the capacitor body and form a pointing arrow structure. When the internal pressure of the capacitor body is too high, its top can rupture unidirectionally along the guide groove and the guide groove, and the side of the capacitor body can burst along the rupture groove to control the direction of the capacitor body bursting. By providing a C-shaped hoop and a diaphragm, the diaphragm can shield the bursting position of the capacitor body to prevent the electrolyte inside the capacitor body from splashing outward and affecting the rest of the circuit structure when the capacitor body bursts, thereby improving the safety of the circuit operation.

[0016] 2. This utility model incorporates a C-shaped clamp, a positioning groove, a positioning block, and a slot. The C-shaped clamp is installed in the positioning groove via the positioning block and the slot. When the capacitor body bursts due to excessive pressure, the C-shaped clamp expands outward under the action of the capacitor body. During this process, the C-shaped clamp deforms and absorbs the kinetic energy of the capacitor body bursting, thereby suppressing the bursting range of the capacitor body and further improving the safety of the capacitor body during use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2This is a schematic diagram showing the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the main structure of the capacitor of this utility model.

[0020] Figure 4 This is a schematic diagram of the rear side of the capacitor body structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the C-shaped hoop structure of this utility model.

[0022] In the diagram: 1. Capacitor body; 2. Circular groove; 3. Guide groove; 4. Extension groove; 5. Crack groove; 6. Guide groove; 7. Positioning groove; 8. C-shaped clamp; 9. Diaphragm; 10. Connecting plate; 11. End plate; 12. Positioning block; 13. Slot; 14. Pin. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figure 1-5 The explosion-proof safety capacitor shown includes a capacitor body 1. The top of the capacitor body 1 is provided with a circular groove 2. The bottom of the circular groove 2 is provided with a guide groove 3. The top of the outer side wall of the capacitor body 1 is provided with an extension groove 4, and one end of the extension groove 4 is connected to one end of the guide groove 3. The outer side wall of the capacitor body 1 is provided with a cracking groove 5, and the cracking groove 5 is designed with two sets of symmetrical sawtooth structures. The sawtooth structure design allows the capacitor body 1 to crack from the middle to both sides, so as to control its cracking direction.

[0025] The top of the rupture groove 5 is located below the bottom of the extension groove 4. The bottom of the circular groove 2 is provided with two guide grooves 6. Both guide grooves 6 are inclined structures, and one end of each guide groove 6 is connected to one end of the guide groove 3. The guide groove 3 and the guide groove 6 form a pointing arrow structure. When the internal pressure of the capacitor body 1 is too high, its top can crack unidirectionally along the guide groove 3 and the guide groove 6 to control the direction of the capacitor body 1 when it bursts. It should be noted that since the guide groove 3 and the guide groove 6 can control the bursting direction of the capacitor body 1, when installing the capacitor body 1, its bursting direction can be avoided from other components in the circuit, thereby avoiding its impact on other components in the circuit.

[0026] The top of the outer side wall of the capacitor body 1 is provided with a positioning groove 7 with an annular structure. A C-shaped clamp 8 is snapped into the inside of the positioning groove 7. A diaphragm 9 is fixed below the C-shaped clamp 8 and is located outside the rupture groove 5.

[0027] A connecting plate 10 is fixedly provided in the middle of the C-shaped hoop 8, and the connecting plate 10 is located inside the extension groove 4. An end plate 11 is fixedly provided at the top of the connecting plate 10, and the end plate 11 is located inside the circular groove 2. The end plate 11 is used to shield the cracked gap of the capacitor body 1 between the guide groove 3 and the guide groove 6. It should be noted that when the top of the capacitor body 1 breaks, it is guided by the guide groove 3 and the guide groove 6, and only a part of it breaks. The broken part is guided by the extension groove 4. Therefore, the end plate 11 can shield the broken part.

[0028] Both ends of the C-shaped hoop 8 are fixed with positioning blocks 12, and the positioning blocks 12 are spherical structures. The inside of the positioning groove 7 is provided with two symmetrically distributed slots 13, both of which are spherical structures. The two positioning blocks 12 are respectively located inside the two slots 13. The slots 13 cooperate with the positioning blocks 12 to limit the C-shaped hoop 8 inside the positioning groove 7.

[0029] Two pins 14 are fixedly provided at the bottom of the capacitor body 1. The pins 14 are used to connect the capacitor body 1 to the circuit.

[0030] The C-shaped hoop 8 is designed as an elastic structure, and the diaphragm 9 is designed as an insulating and thermally conductive silicone pad. The insulating and thermally conductive silicone pad adopts the corresponding structure in the existing technology, which can not only cover and protect the surface of the capacitor body 1, but also dissipate the heat generated by the capacitor body 1 during operation.

[0031] Working principle of this utility model:

[0032] When this device is in use, the capacitor body 1 is connected to the circuit through the two pins 14 at its bottom end, and the C-shaped clamp 8 is installed in the positioning groove 7 by its own elastic potential energy, and the diaphragm 9 below the C-shaped clamp 8 is located outside the rupture groove 5.

[0033] When the capacitor body 1 bursts due to increased internal pressure caused by overload or other reasons, the top of the capacitor body 1 is guided by the guide groove 3 and the guide groove 6 to crack in one direction. At the same time, the side of the capacitor body 1 is guided by the rupture groove 5 to crack from the middle to both sides. During this process, the end plate 11 can shield the cracked gap of the capacitor body 1 between the guide groove 3 and the guide groove 6, and the diaphragm 9 can shield the cracked gap of the capacitor body 1 at the rupture groove 5, so as to prevent the electrolyte inside the capacitor body 1 from being sprayed outward and affecting the rest of the circuit structure when the capacitor body 1 bursts and releases pressure, thereby improving the safety of the circuit.

[0034] Furthermore, during the explosion of the capacitor body 1, the diameter of its top end increases due to the explosion. At this time, the C-shaped clamp 8 is stretched and deformed by the explosion of the capacitor body 1. During this process, the deformation of the C-shaped clamp 8 can absorb some of the kinetic energy of the explosion of the capacitor body 1, so as to suppress the explosion range of the capacitor body 1, thereby avoiding the kinetic energy of the explosion process of the capacitor body 1 from affecting the rest of the circuit structure, and further improving the safety of the circuit.

[0035] It should be noted that the circular groove 2, guide groove 3, extension groove 4, rupture groove 5 and guide groove 6 in this embodiment can all be processed by laser etching or cutting after the capacitor body 1 is produced. The capacitor body 1 adopts the relevant structure in the prior art. The C-shaped hoop 8 can be produced separately and assembled after the capacitor body 1 is processed. The diaphragm 9 can be connected to the C-shaped hoop 8 by adhesive.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety-type explosion-proof capacitor, comprising a capacitor body (1), characterized in that: The capacitor body (1) has a circular groove (2) at its top end, and a guide groove (3) is provided at the bottom of the circular groove (2). An extension groove (4) is provided at the top of the outer side wall of the capacitor body (1), and one end of the extension groove (4) is connected to one end of the guide groove (3). The outer side wall of the capacitor body (1) has a rupture groove (5), and the rupture groove (5) is designed as two sets of symmetrical sawtooth structures. The top end of the rupture groove (5) is located below the bottom end of the extension groove (4). The bottom of the circular groove (2) has two guide grooves (6), both of which are inclined structures, and one end of each guide groove (6) is connected to one end of the guide groove (3). The capacitor body (1) has an annular positioning groove (7) at the top of its outer side wall. A C-shaped clamp (8) is snapped into the inside of the positioning groove (7). A diaphragm (9) is fixed below the C-shaped clamp (8) and is located outside the rupture groove (5).

2. The explosion-proof safety capacitor according to claim 1, characterized in that: A connecting plate (10) is fixedly provided in the middle of the C-shaped hoop (8), and the connecting plate (10) is located inside the extension groove (4).

3. The explosion-proof safety capacitor according to claim 2, characterized in that: The top end of the connecting plate (10) is fixedly provided with an end plate (11), and the end plate (11) is located inside the circular groove (2).

4. The explosion-proof safety capacitor according to claim 1, characterized in that: Both ends of the C-shaped hoop (8) are fixed with positioning blocks (12), and the positioning blocks (12) are spherical structures.

5. A safety-type explosion-proof capacitor according to claim 4, characterized in that: The positioning groove (7) has two symmetrically distributed slots (13) inside. Both slots (13) are spherical structures, and the two positioning blocks (12) are respectively located inside the two slots (13).

6. A safety-type explosion-proof capacitor according to claim 1, characterized in that: The capacitor body (1) is fixedly provided with two pins (14) at the bottom end.

7. A safety-type explosion-proof capacitor according to claim 1, characterized in that: The C-shaped hoop (8) is an elastic structure, and the diaphragm (9) is an insulating and thermally conductive silicone pad.

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