Surface-mounted electrolytic capacitor
By setting splines and limiting components in the shell of the electrolytic capacitor, the problem of difficult to repair the existing capacitor cover folding method is solved, and the repair efficiency and stability are improved.
Patent Information
- Application Number
- CN202421606667.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The inward folding method of existing electrolytic capacitors is not easy to open during repair, resulting in low repair efficiency.
The chip electrolytic capacitor design is designed to facilitate repair by setting splines and limiting components in the housing, using tools to insert the contact points between the splines and the closure cover, and prying the splines to break out of contact with the closure cover.
It improves the repair efficiency of the capacitor, makes it easier to pry the splines open, and ensures the position of the terminals to avoid position changes during the repair process.
Smart Images
Figure CN222914574U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of capacitors, in particular to a chip-type electrolytic capacitor. Background Art
[0002] An electrolytic capacitor is a type of capacitor and also an electronic component. The metal foil is the positive electrode, the metal oxide film close to the positive electrode is the dielectric, and the cathode is composed of conductive materials, electrolytes and other materials. The electrolyte is the main part of the cathode, hence the name electrolytic capacitor.
[0003] At present, the covers of common electrolytic capacitors on the market are mostly fixed by an inward buckle method, that is, the shell is higher than the cover by a section, and a machine is used to fold the higher section of the shell inward and make it contact with the cover, thereby completing the limit of the cover. This type of fixation is not easy to bend the inward fold when the capacitor needs to be repaired, resulting in low capacitor repair efficiency. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a chip type electrolytic capacitor.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A chip electrolytic capacitor comprises a shell, two terminals and a sealing cover. Electrolytic paper, cathode foil and anode foil are arranged in the shell. The cathode foil and the anode foil are respectively connected to the two terminals. Two avoidance holes are opened on the top of the sealing cover, and the two terminals pass through the two avoidance holes respectively. A retaining ring is bonded to the circumferential inner wall of the shell, and the sealing cover is located on one side of the retaining ring. A plurality of splines are integrally formed at one end of the shell, and the plurality of splines are in contact with the sealing cover. A limit assembly for positioning the sealing cover is provided between the retaining ring and the sealing cover.
[0007] As a further solution of the utility model, the limit assembly includes multiple arc-shaped positioning grooves and multiple arc-shaped positioning blocks, the multiple arc-shaped positioning grooves are all opened on the circumferential outer wall of the retaining ring, the multiple arc-shaped positioning blocks are all bonded to the top of the sealing cover, and the arc-shaped positioning blocks are inserted into the arc-shaped positioning grooves, and the multiple arc-shaped positioning grooves and the arc-shaped positioning blocks are asymmetrically distributed.
[0008] As a further solution of the utility model, the limiting assembly includes a plurality of columnar positioning grooves and a plurality of columnar positioning blocks, the plurality of columnar positioning grooves are all opened on the circumferential outer wall of the retaining ring, the plurality of columnar positioning blocks are all bonded to the top of the sealing cover, and the columnar positioning blocks are inserted into the columnar positioning grooves, and the plurality of columnar positioning grooves and the columnar positioning blocks are asymmetrically distributed.
[0009] As a further solution of the utility model, a fixing ring is bonded to the top of the sealing cover, and the circumferential outer wall of the fixing ring is in contact with the circumferential inner wall of the retaining ring.
[0010] As a further solution of the utility model, an annular groove is provided on the circumferential outer wall of the fixing ring, a rubber ring is provided in the annular groove, and the rubber ring is in contact with the retaining ring.
[0011] As a further solution of the utility model, an insert ring is bonded to the top of the sealing cover, a slot is formed at the bottom of the retaining ring, and the insert ring is inserted into the slot.
[0012] As a further solution of the utility model, the circumferential inner walls of the plurality of columnar positioning grooves are all bonded with rubber rings, and one end of the columnar positioning block is inserted into the rubber ring.
[0013] The beneficial effects of the utility model are:
[0014] 1. The utility model uses a tool to insert the contact point between the spline and the sealing cover through the setting of the spline, and then uses the tool to pry open the spline to make the spline and the sealing cover disengage. Since the outer end of the spline in contact with the sealing cover is an arc surface, the tool can be easily inserted into the gap between the spline and the sealing cover, thereby facilitating the prying of the spline, thereby improving the repair efficiency of the capacitor.
[0015] 2. The utility model places the sealing cover into the housing through the setting of the limiting component, inserts the arc-shaped positioning block into the arc-shaped positioning groove, and positions the sealing cover, so that the terminal passes through the avoidance hole, and the position of the terminal does not change, further improving the repair efficiency of the capacitor.
[0016] 3. The utility model sets a rubber ring, and the sealing cover is placed in the housing, so that the columnar positioning block is inserted into the columnar positioning groove, and one end of the columnar positioning block is inserted into the rubber ring, so that the columnar positioning block is fixed, and then the sealing cover is positioned and pre-fixed at the same time, so that the bending of the spline is easier. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a three-dimensional structural schematic diagram of a chip electrolytic capacitor embodiment 1 proposed by the utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of a chip electrolytic capacitor embodiment 1 proposed by the utility model;
[0019] Figure 3 It is a partial enlarged structural schematic diagram of a chip electrolytic capacitor embodiment 1 proposed by the utility model;
[0020] Figure 4It is a partial exploded structural schematic diagram of a chip electrolytic capacitor embodiment 1 proposed by the utility model;
[0021] Figure 5 It is a partial enlarged structural schematic diagram of a chip electrolytic capacitor embodiment 2 proposed by the utility model;
[0022] Figure 6 This is a schematic diagram of the partial decomposition structure of a chip electrolytic capacitor embodiment 2 proposed by the utility model.
[0023] In the figure: 1. Shell; 2. Terminal; 3. Sealing cover; 4. Spline; 5. Retaining ring; 6. Fixing ring; 7. Avoidance hole; 8. Slot; 9. Rubber ring; 10. Insert ring; 11. Arc-shaped positioning groove; 12. Arc-shaped positioning block; 13. Column-shaped positioning groove; 14. Column-shaped positioning block; 15. Rubber ring. DETAILED DESCRIPTION
[0024] In order to enable those skilled in the art to better understand the scheme of the present application, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is only an embodiment of a part of the present application, not all of the embodiments. It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application described here, based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application.
[0025] Example 1
[0026] Reference Figure 1-Figure 4A chip electrolytic capacitor comprises a shell 1, two terminals 2 and a sealing cover 3. Electrolytic paper, cathode foil and anode foil are arranged in the shell 1. The cathode foil and the anode foil are respectively connected to the two terminals 2. Two avoidance holes 7 are arranged on the top of the sealing cover 3, and the two terminals 2 pass through the two avoidance holes 7 respectively. A retaining ring 5 is bonded to the circumferential inner wall of the shell 1, and the sealing cover 3 is located on one side of the retaining ring 5. A plurality of splines 4 are integrally formed at one end of the shell 1, and the plurality of splines 4 are in contact with the sealing cover 3. One end of the spline 4 is flat and the other end is block-shaped. The portion integrally formed with the shell 1 is flat, and the flat portion can be bent 90 degrees by a guide wheel. A fixing ring 6 is bonded to the top of the sealing cover 3, and the circumferential outer wall of the fixing ring 6 is in contact with the circumferential inner wall of the retaining ring 5, so as to seal the inside of the shell 1 and increase the contact area between the sealing cover 3 and the retaining ring 5, so as to maintain good sealing performance. The circumferential outer wall of the fixed ring 6 is provided with an annular groove, and a rubber ring 9 is provided in the annular groove, and the rubber ring 9 is in contact with the retaining ring 5, so as to strengthen the seal between the fixed ring 6 and the retaining ring 5, and further improve the sealing of the capacitor. A plug ring 10 is bonded to the top of the sealing cover 3, and a slot 8 is provided at the bottom of the retaining ring 5, and the plug ring 10 is inserted into the slot 8 to prevent the liquid on the electrolytic paper from flowing out of the shell 1 after the internal electrolytic paper is damaged. A limit assembly for positioning the sealing cover 3 is provided between the retaining ring 5 and the sealing cover 3. When it is necessary to repair the inside, a tool is used to insert the contact point between the spline 4 and the sealing cover 3, and then the tool is used to pry open the spline 4 to make the spline 4 out of contact with the sealing cover 3. Since the outer end of the spline 4 in contact with the sealing cover 3 is an arc surface, the tool can be easily inserted into the gap between the spline 4 and the sealing cover 3, so as to facilitate the prying of the spline 4, thereby improving the repair efficiency of the capacitor.
[0027] Among them, the limiting assembly includes multiple arc-shaped positioning grooves 11 and multiple arc-shaped positioning blocks 12, multiple arc-shaped positioning grooves 11 are all opened on the circumferential outer wall of the retaining ring 5, multiple arc-shaped positioning blocks 12 are all bonded to the top of the sealing cover 3, and the arc-shaped positioning blocks 12 are inserted into the arc-shaped positioning grooves 11, and multiple arc-shaped positioning grooves 11 and arc-shaped positioning blocks 12 are asymmetrically distributed. After the repair is completed, the sealing cover 3 is placed in the outer shell 1, and the arc-shaped positioning blocks 12 are inserted into the arc-shaped positioning grooves 11 to position the sealing cover 3, so that the terminal 2 passes through the avoidance hole 7, and the position of the terminal 2 will not change, thereby further improving the repair efficiency of the capacitor.
[0028] The working principle of this embodiment is as follows: when it is necessary to repair the inside, use a tool to insert the contact point between the spline 4 and the sealing cover 3, and then use the tool to pry open the spline 4 to disengage the spline 4 from the sealing cover 3. Since the outer end of the spline 4 that contacts the sealing cover 3 is an arc surface, the tool can be easily inserted into the gap between the spline 4 and the sealing cover 3, thereby facilitating the prying of the spline 4, thereby improving the repair efficiency of the capacitor.
[0029] Example 2
[0030] Reference Figure 5-Figure 6 The limiting assembly also includes a plurality of columnar positioning grooves 13 and a plurality of columnar positioning blocks 14, wherein the plurality of columnar positioning grooves 13 are all arranged on the circumferential outer wall of the retaining ring 5, the plurality of columnar positioning blocks 14 are all bonded to the top of the sealing cover 3, and the columnar positioning blocks 14 are inserted into the columnar positioning grooves 13, and the plurality of columnar positioning grooves 13 and the columnar positioning blocks 14 are asymmetrically distributed, the circumferential inner walls of the plurality of columnar positioning grooves 13 are bonded with rubber rings 15, and one end of the columnar positioning block 14 is inserted into the rubber ring 15, thereby fixing the columnar positioning block 14, and then pre-fixing the sealing cover 3, and then putting the sealing cover 3 into the housing 1, so that the columnar positioning block 14 is inserted into the columnar positioning groove 13, and at the same time, one end of the columnar positioning block 14 is inserted into the rubber ring 15, fixing the columnar positioning block 14, and then positioning the sealing cover 3 while pre-fixing, thereby making the bending of the spline 4 easier.
[0031] The working principle of this embodiment is as follows: when in use, the sealing cover 3 is placed into the outer shell 1, and the columnar positioning block 14 is inserted into the columnar positioning groove 13. At the same time, one end of the columnar positioning block 14 is inserted into the rubber ring 15, and the columnar positioning block 14 is fixed, thereby positioning the sealing cover 3 and pre-fixing it, so that the bending of the spline 4 is easier.
[0032] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model, and the protection scope of the utility model is defined by the attached claims and their equivalent scope.
Claims
1. A chip electrolytic capacitor, comprising a housing (1), two terminals (2) and a sealing cover (3), wherein electrolytic paper, a cathode foil and an anode foil are arranged in the housing (1), the cathode foil and the anode foil are respectively connected to the two terminals (2), the top of the sealing cover (3) is provided with two avoidance holes (7), and the two terminals (2) respectively pass through the two avoidance holes (7), characterized in that: A retaining ring (5) is fixedly connected to the circumferential inner wall of the outer shell (1), and the sealing cover (3) is located on one side of the retaining ring (5); a plurality of splines (4) are integrally formed at one end of the outer shell (1), and the plurality of splines (4) are in contact with the sealing cover (3); and a limiting component for positioning the sealing cover (3) is provided between the retaining ring (5) and the sealing cover (3).
2. A chip electrolytic capacitor according to claim 1, characterized in that: The limiting assembly comprises a plurality of arc-shaped positioning grooves (11) and a plurality of arc-shaped positioning blocks (12); the plurality of arc-shaped positioning grooves (11) are all formed on the circumferential outer wall of the retaining ring (5); the plurality of arc-shaped positioning blocks (12) are all fixedly connected to the top of the sealing cover (3); the arc-shaped positioning blocks (12) are inserted into the arc-shaped positioning grooves (11); and the plurality of arc-shaped positioning grooves (11) and the arc-shaped positioning blocks (12) are asymmetrically distributed.
3. A chip electrolytic capacitor according to claim 1, characterized in that: The limiting assembly comprises a plurality of columnar positioning grooves (13) and a plurality of columnar positioning blocks (14); the plurality of columnar positioning grooves (13) are all formed on the circumferential outer wall of the retaining ring (5); the plurality of columnar positioning blocks (14) are all fixedly connected to the top of the sealing cover (3); the columnar positioning blocks (14) are inserted into the columnar positioning grooves (13); and the plurality of columnar positioning grooves (13) and the columnar positioning blocks (14) are asymmetrically distributed.
4. A chip electrolytic capacitor according to claim 1, characterized in that: A fixing ring (6) is fixedly connected to the top of the sealing cover (3), and the circumferential outer wall of the fixing ring (6) is in contact with the circumferential inner wall of the retaining ring (5).
5. A chip electrolytic capacitor according to claim 4, characterized in that: An annular groove is provided on the circumferential outer wall of the fixing ring (6), a rubber ring (9) is provided in the annular groove, and the rubber ring (9) is in contact with the retaining ring (5).
6. A chip electrolytic capacitor according to claim 4, characterized in that: The top of the sealing cover (3) is fixedly connected with an insert ring (10), the bottom of the retaining ring (5) is provided with a slot (8), and the insert ring (10) is inserted into the slot (8).
7. A chip electrolytic capacitor according to claim 3, characterized in that: The circumferential inner walls of the plurality of columnar positioning grooves (13) are all fixedly connected with a rubber ring (15), and one end of the columnar positioning block (14) is inserted into the rubber ring (15).