Capacitor protective cover, circuit board structure and electric device

Abstract

The utility model discloses a capacitor protective cover, circuit structure and electric device, relates to capacitor protection technical field, the capacitor protective cover casing, the casing has the cover mouth in the first direction, also has the avoidance mouth in the second direction on the casing, the avoidance mouth is communicated with the cover mouth, and the avoidance mouth is communicated with the cover mouth. When the cover shell covers the end part of a columnar capacitor through the cover, the avoiding opening is used for avoiding the capacitor; the cover shell is provided with a cover end wall opposite to the receding opening in the second direction, the cover shell is provided with a cover side wall connected with the periphery of the cover end wall, and at least part of the cover side wall is in an arc shape. When the explosive end of the capacitor explodes, at least part of the cover side wall is arranged to be arc-shaped, so that the pressure of air on the inner side of the cover side wall is more uniform, and the problem that the capacitor protective cover is easy to explode is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of capacitor protection, especially relates to a capacitor protection cover, circuit board and electric device. BACKGROUND

[0002] High-voltage electrolytic capacitor is a commonly used device in the field of switching power supply, and is widely used in circuit board structure, and high-voltage electrolytic capacitor is prone to explosion. The capacitor protection cover is usually arranged at the explosion-prone end of the high-voltage electrolytic capacitor. The common capacitor protection cover is square, the capacitor protection cover is arranged on the circuit board, and a protection cavity is formed between the capacitor protection cover and the circuit board, and the explosion-prone end of the high-voltage electrolytic capacitor is located in the protection cavity. When the high-voltage electrolytic capacitor explodes, gas impact can be generated in the protection cavity, the gas impact received in the capacitor protection cover is uneven, and the capacitor protection cover is prone to burst. UTILITY MODEL CONTENTS

[0003] The utility model discloses a capacitor protection cover, circuit board structure and electric device, which aims at improving the problem that the capacitor protection cover is prone to burst.

[0004] To achieve the above-mentioned purpose, the capacitor protection cover provided by the utility model comprises a cover shell body, the cover shell body has a cover opening in a first direction, an avoiding opening in a second direction is further formed in the cover shell body, the avoiding opening is communicated with the cover opening, and when the cover shell body covers the end part of the columnar arranged capacitor through the cover opening, the avoiding opening is used to avoid the capacitor.

[0005] The cover shell body has a cover end wall opposite to the avoiding opening in the second direction, the cover shell body has a cover side wall connected with the periphery of the cover end wall, and the cover side wall is at least partially arranged in an arc shape.

[0006] In an embodiment, the cover side wall comprises:

[0007] Two first side walls are arranged at intervals along a third direction, and the cover opening is defined between the end parts corresponding to the two first side walls and the cover end wall.

[0008] A second side wall is connected to the end parts of the two first side walls and the cover end wall away from the cover opening.

[0009] Among them, the second side wall is at least partially arranged in an arc shape.

[0010] In an embodiment, the arc center of the second side wall is on the center line between the two first side walls.

[0011] In an embodiment, the second side wall and at least one of the first side walls are arranged tangentially.

[0012] In an embodiment, the cover body is provided with a vent hole.

[0013] In an embodiment, the vent hole is on the cover end wall; and / or,

[0014] The vent hole is provided with a plurality of.

[0015] In an embodiment, the extension path of the vent hole is arranged in a curve to form a venting identification part.

[0016] In an embodiment, the cover body is made of metal; and / or,

[0017] The cover body is integrally formed.

[0018] The utility model also proposes a kind of circuit structure, comprising:

[0019] Circuit board;

[0020] Capacitor, it is arranged in column, the capacitor has the first end of pin setting, and the second end opposite to the first end, and the pin is electrically connected to the circuit board;And,

[0021] Capacitor protection cover, including the capacitor protection cover, the cover of the capacitor protection cover is set in the second end of the capacitor, and the avoiding mouth is used to avoid the second end, the capacitor protection cover is fixedly connected on the circuit board:

[0022] The capacitor protection cover includes cover body, the cover body has cover set mouth in the first direction, the cover body is also provided with avoiding mouth in the second direction, the avoiding mouth is communicated with the cover set mouth, when the cover body is covered by the cover set mouth the end of capacitor arranged in column, the avoiding mouth is used to avoid the capacitor;

[0023] The cover body has cover end wall opposite to the avoiding mouth in the second direction, the cover body has cover side wall connected with the circumference of the cover end wall, and the cover side wall is at least partially arranged in arc.

[0024] The utility model also proposes a kind of electric device, comprising the circuit board structure:

[0025] The circuit board structure includes circuit board;

[0026] Capacitor, it is arranged in column, the capacitor has the first end of pin setting, and the second end opposite to the first end, and the pin is electrically connected to the circuit board;And,

[0027] The capacitor protection cover comprises a cover shell body, the cover shell body is provided with a covering opening in a first direction, and the cover shell body is further provided with an avoiding opening in a second direction, the avoiding opening is communicated with the covering opening, and the avoiding opening is used for avoiding the capacitor when the cover shell body covers an end of the columnar capacitor through the covering opening.

[0028] The capacitor protection cover comprises a cover shell body, the cover shell body is provided with a covering opening in a first direction, and the cover shell body is further provided with an avoiding opening in a second direction, the avoiding opening is communicated with the covering opening, and the avoiding opening is used for avoiding the capacitor when the cover shell body covers an end of the columnar capacitor through the covering opening.

[0029] The cover shell body is provided with a cover end wall opposite to the avoiding opening in the second direction, the cover shell body is provided with a cover side wall connected with the periphery of the cover end wall, and the cover side wall is at least partially arranged in an arc shape.

[0030] In an embodiment, the electrical device comprises a switching power supply.

[0031] The capacitor protection cover comprises a cover shell body, the cover shell body is provided with a covering opening in a first direction, and the cover shell body is further provided with an avoiding opening in a second direction, the avoiding opening is communicated with the covering opening, and the avoiding opening is used for avoiding the capacitor when the cover shell body covers an end of the columnar capacitor through the covering opening. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0033] Figure 1 The structure schematic view of the capacitor protection cover provided by the present application is shown in the embodiment.

[0034] Figure 2 The structure schematic view of the capacitor protection cover provided by the present application is shown in the embodiment. Figure 1 The structure schematic view of the capacitor protection cover provided by the present application is shown in the embodiment.

[0035] Figure 3 The structure schematic view of the circuit structure provided by the present application is shown in the embodiment.

[0036] Figure 4 To Figure 3 Another perspective structural schematic view of the circuit structure in

[0037] Explanation of reference numerals:

[0038] 100, capacitive shield; 1, shield housing; 11, shield opening; 12, escape opening; 13, air vent; 14, air vent identification part; 2, shield end wall; 3, shield side wall; 31, first side wall; 311, connecting part; 32, second side wall;

[0039] 200, circuit structure; 4, capacitor; 41, first end; 42, second end; 43, pin.

[0040] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0042] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0043] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B simultaneously satisfying the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

[0044] As a common device in the field of switching power supply, high-voltage electrolytic capacitor is widely used in circuit board structure. As a common device in the field of switching power supply, the explosion hazard of high-voltage electrolytic capacitor has always been a problem that power supply designers have to consider. Influenced by its internal structure characteristics, the bottom end of the electrolytic capacitor is an explosive end. Generally, the explosion of electrolytic capacitor will preferentially break through the bottom end structure. By adding a protective cover to the explosive end of the electrolytic capacitor, the safety hazard caused by the explosion of the electrolytic capacitor can be effectively reduced, and the explosion loss can be reduced.

[0045] The capacitor protective cover is usually arranged at the explosive end of the high-voltage electrolytic capacitor. The common capacitor protective cover is square. The capacitor protective cover is arranged on the circuit board, and a protective cavity is formed between the capacitor protective cover and the circuit board. The explosive end of the high-voltage electrolytic capacitor is located in the protective cavity. When the high-voltage electrolytic capacitor explodes, gas impact can be generated in the protective cavity. The gas impact received inside the capacitor protective cover is uneven, and the capacitor protective cover is prone to burst.

[0046] The utility model provides a kind of capacitor protective cover 100.

[0047] Please refer to Figure 1 And Figure 2 In an embodiment of the utility model, the capacitor protective cover 100 includes cover shell body 1, the cover shell body 1 has cover set mouth 11 in first direction, and the cover shell body 1 is also provided with avoiding mouth 12 in second direction, the avoiding mouth 12 is communicated with the cover set mouth 11, when the cover shell body 1 is covered with the end of the capacitor 4 arranged in column shape through the cover set mouth 11, the avoiding mouth 12 is used to avoid the capacitor 4.

[0048] The cover shell body 1 has cover end wall 2 opposite to the avoiding mouth 12 in second direction, and the cover shell body 1 has cover side wall 3 connected with the circumference of the cover end wall 2, and the cover side wall 3 is at least partially arranged in arc shape.

[0049] The technical scheme of the utility model can conveniently cover the capacitor protective cover 100 on the explosive end of the capacitor 4 by the arrangement of the cover set mouth 11, avoid the capacitor 4 through the avoiding mouth 12, guarantee the covering of the explosive end of the capacitor 4, and reduce the interference between the capacitor protective cover 100 and the capacitor 4. When the explosive end of the capacitor 4 explodes, the cover side wall 3 is at least partially arranged in arc shape, so that the cover side wall 3 is at least partially arched, the air pressure in the capacitor protective cover 100 can be dispersed, the air pressure on the inside of the cover side wall 3 is more uniform, the problem of local high pressure in the cover side wall 3 is reduced, and the problem of easy burst of the capacitor protective cover 100 is improved.

[0050] Please refer to Figure 1 And Figure 2The cover side wall 3 comprises:

[0051] Two first side walls 31 are arranged in a third direction and spaced apart, and the cover opening 11 is defined between the two first side walls 31 and the corresponding end portions of the cover end wall 2.

[0052] A second side wall 32 is connected to the end portions of the two first side walls 31 and the cover end wall 2 away from the cover opening 11.

[0053] The second side wall 32 is at least partially arranged in an arc shape.

[0054] By arranging the two first side walls 31, the size of the cover opening 11 is ensured, and the distance between the capacitor protection cover 100 and the remaining electronic components of the circuit board is ensured, reducing the interference between the capacitor protection cover 100 and the electronic components on the circuit board.

[0055] Please refer to Figure 1 and Figure 3 Specifically, the second side wall 32 is a semicircular ring, and the two side edges of the second side wall 32 in the circumferential direction are flush with the axis of the capacitor 4, i.e. the second side wall 32 is coaxial with the capacitor 4, so that the inner side wall of the second side wall 32 maintains a constant distance from the capacitor 4, and when the capacitor 4 explodes, the gas pressure on the second side wall 32 is more uniform.

[0056] The center of the arc of the second side wall 32 is on the center line between the two first side walls 31, so that the gas pressure on the two first side walls 31 is consistent.

[0057] The two first side walls 31 are each provided with a connecting portion 311, and the capacitor protection cover 100 can be mounted on the circuit board through the connecting portion 311. Specifically, the connecting portion 311 is a plug rod, and the capacitor protection cover 100 can be inserted and fixed on the circuit board through the plug rod.

[0058] The distance between the two first side walls 31 gradually increases or remains unchanged in the direction approaching the circuit board, which can reduce the interference between the first side wall 31 and the capacitor protection cover 100.

[0059] The second side wall 32 and at least one of the first side walls 31 are tangentially arranged. The minimum distance between the first side wall 31 and the capacitor 4 is greater than or equal to the distance between the second side wall 32 and the capacitor 4. When the capacitor 4 explodes, the first side wall 31 and the capacitor 4 can maintain a safe distance.

[0060] Specifically, the two first side walls 31 are tangent to the second side wall 32. The two first side walls 31 are flush, which can make the minimum distance between the first side wall 31 and the capacitor 4 greater than or equal to the distance between the second side wall 32 and the capacitor 4, and reduce the interference between the first side wall 31 and other parts on the circuit board.

[0061] Please refer to Figure 1 and Figure 2 The cover body 1 is provided with an air vent 13. When the capacitor 4 explodes at the explosive end, the air in the capacitor protection cover 100 can be discharged from the air vent 13, reducing the pressure of the air on the cover body 1. By setting the size of the air vent 13, the fragments generated by the explosion of the capacitor 4 can be blocked.

[0062] The air vent 13 can be provided on one or more of the cover end wall 2, the first side wall 31 and the second side wall 32.

[0063] The cover end wall 2 corresponds to the explosive end of the capacitor 4, and the cover end wall 2 is directly impacted by the air driven by the explosion of the capacitor 4. The air vent 13 is provided on the cover end wall 2. When the capacitor 4 explodes, the air can be discharged from the air vent 13, reducing the pressure on the cover end wall 2.

[0064] The air vent 13 is provided with a plurality of air vents 13, and the plurality of air vents 13 cooperate to improve the efficiency of air discharge without increasing the opening of a single air vent 13.

[0065] The extension path of the air vent 13 is arranged in a curve to form an air discharge identification part 14. The air discharge identification part 14 can be a symbol such as a trademark, a word or a number.

[0066] The air vent 13 can be a special-shaped hole, and by controlling the extension curve of the air vent 13, different shapes or sizes of air discharge identification parts 14 can be formed.

[0067] In the embodiment of the application, a plurality of air vents 13 are arranged along a curve and form an air discharge identification part 14, which ensures the recognition effect of the air discharge identification part 14 and facilitates the control of the opening size of a single air vent 13 to ensure the structural strength of the cover end wall 2.

[0068] In order to ensure the structural strength of the cover end wall 2, the number and spacing of the air vents 13 can be set as needed.

[0069] The cover shell body 1 is made of metal material, which can guarantee the structural strength of the cover shell body 1, reduce the damage of the capacitor protective cover 100 when the capacitor 4 explodes, and guarantee the protection effect of the capacitor protective cover 100.

[0070] The cover end wall 2, the first side wall 31 and the second side wall 32 can be connected by welding; in the embodiment, the cover end wall 2, the first side wall 31 and the second side wall 32 are integrally connected, that is, the cover shell body 1 is integrally formed, and the forming mode of the cover shell body 1 can be die casting.

[0071] Please refer to Figure 3 and Figure 4 The utility model also provides a circuit structure 200, which comprises:

[0072] A circuit board;

[0073] A capacitor 4, which is in a columnar shape, has a first end 41 provided with a pin 43 and a second end 42 opposite to the first end 41, and the pin 43 is electrically connected to the circuit board; and

[0074] A capacitor protective cover 100, the cover set port 11 of the capacitor protective cover 100 is covered on the second end 42 of the capacitor 4, and the avoiding port 12 is used to avoid the second end 42, and the capacitor protective cover 100 is fixedly connected to the circuit board;

[0075] The capacitor protective cover 100 further comprises a cover shell body 1, the cover shell body 1 has a cover set port 11 in a first direction, and an avoiding port 12 in a second direction is further formed on the cover shell body 1, the avoiding port 12 is communicated with the cover set port 11, when the cover shell body 1 covers the end part of the capacitor 4 in a columnar shape through the cover set port 11, the avoiding port 12 is used to avoid the capacitor 4;

[0076] The cover shell body 1 has a cover end wall 2 opposite to the avoiding port 12 in the second direction, the cover shell body 1 has a cover side wall 3 connected to the periphery of the cover end wall 2, and the cover side wall 3 is at least partially arranged in an arc shape.

[0077] The capacitor 4 includes an electrolytic capacitor 4, and the second section includes an explosive end, after the capacitor shield 100 is irradiated and fixed on the circuit board, the capacitor shield 100 and the circuit board can be protected from the side and the end of the explosive end of the capacitor 4, the protection effect of the capacitor 4 is improved, when the capacitor 4 explodes, the shell of the capacitor 4 can be reduced to fly out of the capacitor shield 100. The side wall 3 of the cover is at least partially arc-shaped, so that the pressure of the gas on the side wall 3 of the cover is more uniform, the damage to the capacitor shield 100 is reduced, and the damage to the circuit board and the remaining electronic elements on the circuit board after the capacitor 4 explodes is reduced.

[0078] The utility model discloses still propose a kind of electric device, including circuit board structure. Circuit structure 200 includes:

[0079] Circuit board;

[0080] Capacitor 4, is columnarly arranged, the capacitor 4 has the first end 41 of setting pin 43, and the second end 42 opposite to the first end 41, the pin 43 is electrically connected to the circuit board, and,

[0081] Capacitor shield 100, the cover of the capacitor shield 100 is covered in the second end 42 of the capacitor 4, and the capacitor shield 100 also includes cover shell 1, the cover shell 1 has cover 11 in the first direction, and the cover shell 1 is also provided with the avoidance mouth 12 in the second direction, the avoidance mouth 12 is communicated with the cover 11, when the cover shell 1 is covered in the end of capacitor 4 arranged columnarly by cover 11, the avoidance mouth 12 is used to avoid capacitor 4.

[0082] The cover shell 1 has the cover end wall 2 opposite to the avoidance mouth 12 in the second direction, and the cover shell 1 has the side wall 3 connected to the circumference of the cover end wall 2, and the side wall 3 is at least partially arc-shaped.

[0083] When the capacitor 4 in the electric device explodes, the pressure of the gas on the inside of the side wall 3 of the cover is more uniform, the damage to the capacitor shield 100 is reduced, and the safety of the electric device is improved.

[0084] The electric device includes a switching power supply, which can improve the safety of the electric device.

[0085] In the embodiment of the utility model, through setting the second side wall 32 to be arc, make the pressure of gas that the second side wall 32 receives be more uniform, then through the air release hole 13, air is released, the pressure of air in the capacitor protection cover 100 is reduced, thereby the air pressure that the capacitor protection cover 100 receives is reduced, the problem that the capacitor protection cover 100 is prone to burst is improved as a whole.

[0086] The above-mentioned is only the exemplary implementation of the utility model, and does not limit the patent range of the utility model, and any equivalent structure transformation made under the technical concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A capacitive shield, characterized in that, The cover shell body has a cover opening in a first direction, and a relief opening in a second direction is also formed on the cover shell body, the relief opening communicates with the cover opening, and the relief opening is used to avoid the capacitor when the cover shell body covers the end of the columnar capacitor through the cover opening; The cover shell body has a cover end wall opposite to the relief opening in the second direction, and the cover shell body has a cover side wall connecting the periphery of the cover end wall, and the cover side wall is at least partially arranged in an arc shape.

2. The capacitive shield of claim 1, wherein, The cover side wall comprises: Two first side walls are arranged at intervals in a third direction, and the cover opening is defined between the corresponding end portions of the two first side walls and the cover end wall; and A second side wall is connected to the end portions of the two first side walls and the cover end wall away from the cover opening; Wherein, the second side wall is at least partially arranged in an arc shape.

3. The capacitive shield of claim 2, wherein, The arc center of the second side wall is on the center line between the two first side walls.

4. The capacitive shield of claim 2, wherein, The second side wall and at least one of the first side walls are tangentially arranged.

5. The capacitive shield of claim 1, wherein, The cover shell body is provided with a gas escape hole.

6. The capacitive shield of claim 5, wherein, The gas escape hole is on the cover end wall; and / or The gas escape hole is provided with a plurality of holes.

7. The capacitive shield of claim 5, wherein, The extension path of the gas escape hole is arranged in a curve to form a gas escape mark part.

8. The capacitive shield of claim 1, wherein, The cover shell body is made of metal; and / or The cover shell body is integrally formed.

9. A circuit board structure, characterized by Comprise: A circuit board; A capacitor arranged in a columnar shape, the capacitor has a first end provided with a pin, and a second end opposite to the first end, the pin is electrically connected to the circuit board; And A capacitor protection cover comprising any one of the capacitor protection covers according to claims 1 to 8, the cover opening of the capacitor protection cover covers the second end of the capacitor, and the relief opening is used to avoid the second end, and the capacitor protection cover is fixedly connected to the circuit board.

10. An electrical device, comprising: The circuit board structure according to claim 9 is provided.

11. The powered device of claim 10, wherein, The electric device comprises a switching power supply.

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