Capacitor with high sealing performance

Abstract

The utility model relates to the technical field of capacitors, in particular to a capacitor with high sealing performance, which consists of a bottom shell, a top shell, a capacitor column and a sliding block, and annular step surfaces are respectively arranged at the edges of butting ports of the bottom shell and the top shell; a plurality of sliding blocks distributed in the circumferential direction are arranged on the bottom wall of the bottom shell, and sealing strips are arranged on the tops of the outer surfaces of the sliding blocks; the upper half part and the lower half part of the sealing strip are respectively embedded in the step surfaces of the bottom shell and the top shell; a rubber adhesive sheet is arranged at the top of the capacitance column, a circular truncated cone is arranged at the bottom of the capacitance column, the peripheral surface of the circular truncated cone is in contact with the inner side inclined surface of each sliding block, the capacitance column is fixedly connected with the bottom shell through a fastener, and the upper sleeve cover and the lower sleeve cover are spliced in a press fit mode and fixed through screws. And the sealing strip used at the joint does not deform and can be perfectly matched with the upper sleeve cover and the lower sleeve cover, so that relatively high sealing performance is provided, and normal use of the capacitor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a capacitor with high sealing performance. Background Art

[0002] Existing capacitors are inherently weak, so to minimize wear on the capacitor's surface, they are typically covered with a cap. These caps consist of an upper and lower layer. During assembly, workers must add a sealing ring to the threaded connection between the upper and lower caps. While this ring provides a seal, in practice, it's easily squeezed by the rotating threads when the caps are connected, causing deformation and compromised sealing. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a capacitor with high sealing performance.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A highly sealed capacitor, comprising a bottom shell, a top shell, a capacitor column, and a sliding block. The bottom shell and the top shell are butted together to form a complete housing for accommodating the capacitor column. Annular stepped surfaces are respectively provided at the edges of the butt joints of the bottom shell and the top shell.

[0006] The bottom wall of the bottom shell is provided with a plurality of sliding blocks distributed circumferentially, the inner surface of the sliding block is designed to be an inclined surface, the outer surface of the sliding block is designed to be in a shape consistent with the inner wall of the bottom shell, and the sliding block is provided with a sealing strip on the top of its outer surface;

[0007] The upper and lower halves of the sealing strip are respectively embedded in the step surfaces of the bottom shell and the top shell;

[0008] A rubber adhesive sheet is provided on the top of the capacitor column, and the top surface of the capacitor column is adhered to the top wall of the top shell through the rubber adhesive sheet;

[0009] A truncated cone is provided at the bottom of the capacitor column, the outer circumference of the truncated cone contacts the inner inclined surface of each sliding block, and the capacitor column is fixedly connected to the bottom shell through a fastener.

[0010] In a preferred technical solution, a recessed groove is provided at the center of the bottom surface of the bottom shell, a countersunk screw is inserted into the recessed groove, and the countersunk screw is fixed in a threaded hole provided at the center of the bottom surface of the truncated cone.

[0011] In a preferred technical solution, the inner bottom wall of the bottom shell is provided with a plurality of circumferentially distributed straight grooves around the countersunk screws, and the straight grooves are all provided radially.

[0012] In a preferred technical solution, a guide block is provided at the bottom of each sliding block, and each guide block is respectively built into a corresponding straight groove and slides along the straight line.

[0013] In a preferred technical solution, a notch for inserting the countersunk screw is provided in the center of the annularly distributed sliding blocks, and a distance is maintained between adjacent sliding blocks.

[0014] In a preferred technical solution, a pin is provided on the top of the capacitor column, the pin passes through the rubber adhesive sheet upward, and a through hole for the pin to pass through is opened on the top shell.

[0015] In a preferred technical solution, when all the sliding blocks slide out to the farthest distance in the direction away from the radial center, all the sealing strips are respectively embedded in the corresponding step surfaces, and all the sealing strips are assembled into a complete sealing ring.

[0016] The beneficial effects of the utility model are:

[0017] The capacitor structure proposed in this solution solves the problem that the sealing effect of the finished capacitor will be affected due to the easy distortion and deformation of the sealing ring during capacitor assembly. The upper and lower covers are pressed together and fixed with screws. The sealing strip used at the connection will not deform and can fit perfectly with the upper and lower covers, providing high sealing performance and ensuring the normal use of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the capacitor proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the capacitor proposed by the present invention;

[0020] Figure 3 This is a structural diagram of the sliding block proposed in the utility model.

[0021] In the figure: 1. bottom shell; 2. top shell; 3. capacitor column; 4. sliding block; 5. pin; 6. through hole; 7. round table; 8. countersunk screw; 9. step surface; 10. sealing strip; 11. rubber adhesive sheet; 12. inclined surface; 13. notch; 14. guide block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In this embodiment, refer to Figure 1-3A highly sealed capacitor comprises a bottom shell 1, a top shell 2, a capacitor column 3, and a sliding block 4. The bottom shell 1 and the top shell 2 are butted together to form a complete housing for the capacitor column 3. A rubber adhesive sheet 11 is provided on the top of the capacitor column 3, which is bonded to the top wall of the top shell 2 via the rubber adhesive sheet 11. A pin 5 is provided on the top of the capacitor column 3, which extends upward through the rubber adhesive sheet 11. The top shell 2 has a through-hole 6 for the pin 5 to pass through. The capacitor column 3 and the top shell 2 are connected to form an integral structure by gluing.

[0024] As attached Figure 2 As shown, an annular step surface 9 is respectively formed at the edges of the docking interfaces of the bottom shell 1 and the top shell 2 .

[0025] The bottom wall of the bottom shell 1 is provided with a number of circumferentially distributed sliding blocks 4. The outer surfaces of the sliding blocks 4 are designed to match the inner wall of the bottom shell 1. A sealing strip 10 is provided on the top of the outer surface of the sliding block 4. When the ports of the bottom shell 1 and the top shell 2 are connected, the upper and lower halves of the sealing strip 10 fit neatly within the stepped surfaces 9 of the bottom shell 1 and the top shell 2, respectively. When the bottom shell 1 and the top shell 2 are stably connected, the sealing strip 10 is pressed into the connection between the bottom shell 1 and the top shell 2, thereby achieving a seal.

[0026] It should be noted that when all the sliding blocks 4 slide out to the farthest distance in the direction away from the center, all the sealing strips 10 are just embedded in the corresponding step surfaces 9, and all the sealing strips 10 can be assembled into a complete sealing ring, using the integrity of the sealing ring to improve the sealing effect.

[0027] As attached Figure 3 As shown, the inner bottom wall of the bottom shell 1 is provided with a plurality of circumferentially distributed straight grooves, all of which are radially oriented. Each sliding block 4 is provided with a guide block 14 at its bottom, which is embedded in the corresponding straight groove and slides along the straight line. The inner surface of the sliding block 4 is designed as an inclined surface 12.

[0028] Here, a cone 7 is provided at the bottom of the capacitor column 3, and the outer peripheral surface of the cone 7 contacts the inner inclined surface 12 of each sliding block 4. When the capacitor column 3 is pressed into the bottom shell 1, the cone 7 will touch the sliding blocks 4 on all sides, causing the sliding blocks 4 to slide outward, thereby ensuring that the sealing strip 10 on the outside of the sliding block 4 can be built into the step surface 9.

[0029] A recessed groove is provided at the center of the bottom surface of the bottom shell 1, into which a countersunk screw 8 is inserted. Figure 3 It can be seen that a notch 13 for inserting the countersunk screw 8 is provided at the center of the annular sliding block 4 , and the countersunk screw 8 is fixed in a threaded hole provided at the center of the bottom surface of the truncated table 7 .

[0030] Finally, it should be added that Figure 3 As shown, a certain distance is maintained between adjacent sliding blocks 4. All sliding blocks 4 can slide toward the center or away from the center. Maintaining a certain distance between the sliding blocks 4 can ensure that all sliding blocks 4 have a certain sliding travel, thereby avoiding interference between adjacent sliding blocks 4.

[0031] During the installation process of the capacitor, first, the capacitor column 3 is attached to the top shell 2 using the rubber adhesive sheet 11. The rubber adhesive sheet 11 is fully in contact with the inner wall of the top shell 2 and fixed to form a whole; then the bottom of the capacitor column 3 is pressed into the bottom shell 1. As the capacitor column 3 enters the bottom shell 1 to the deepest point, on the one hand, the sliding blocks 4 on all sides slide out, and each sealing strip 10 is respectively embedded in the step surface 9 between the top shell 1 and the bottom shell 2. The sealing strip 10 is used to achieve the sealing of the upper and lower shells. On the other hand, the frustum 7 at the bottom of the capacitor column 3 is at the bottom. At this time, the countersunk screw 8 can be used to lock the capacitor column 3, so that the capacitor column 3 and the bottom shell 1 form a whole. After assembly is completed, the bottom shell 1, the top shell 2 and the capacitor column 3 will become a complete capacitor.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A capacitor with high sealing performance, characterized in that: The capacitor is composed of a bottom shell (1), a top shell (2), a capacitor column (3), and a sliding block (4); the bottom shell (1) and the top shell (2) are butted up and down to form a complete shell for accommodating the capacitor column (3); an annular step surface (9) is respectively formed at the edge of the butt joint of the bottom shell (1) and the top shell (2); The bottom wall of the bottom shell (1) is provided with a plurality of sliding blocks (4) distributed in a circumferential direction, the inner surface of the sliding block (4) is designed as an inclined surface (12), the outer surface of the sliding block (4) is designed to be in a shape that matches the inner wall of the bottom shell (1), and the sliding block (4) is provided with a sealing strip (10) on the top of its outer surface; The upper and lower halves of the sealing strip (10) are respectively embedded in the step surfaces (9) of the bottom shell (1) and the top shell (2); A rubber adhesive sheet (11) is provided on the top of the capacitor column (3), and the top surface of the capacitor column (3) is bonded to the top wall of the top shell (2) via the rubber adhesive sheet (11); A truncated cone (7) is provided at the bottom of the capacitor column (3), the outer peripheral surface of the truncated cone (7) contacts the inner inclined surface (12) of each sliding block (4), and the capacitor column (3) is fixedly connected to the bottom shell (1) via a fastener.

2. The capacitor with high sealing performance according to claim 1, characterized in that: A recessed groove is provided at the center of the bottom surface of the bottom shell (1), a countersunk screw (8) is inserted into the recessed groove, and the countersunk screw (8) is fixed in a threaded hole provided at the center of the bottom surface of the truncated table (7).

3. The capacitor with high sealing performance according to claim 2, characterized in that: The inner bottom wall of the bottom shell (1) is provided with a plurality of circumferentially distributed straight grooves around the countersunk screws (8), and the straight grooves are all radially provided.

4. The capacitor with high sealing performance according to claim 3, characterized in that: The bottom of each sliding block (4) is provided with a guide block (14), and the guide blocks (14) are respectively built into corresponding straight grooves and slide along the straight lines thereof.

5. The capacitor with high sealing performance according to claim 3, characterized in that: A notch (13) for inserting the countersunk screw (8) is formed in the center of the annularly distributed sliding blocks (4), and a distance is maintained between adjacent sliding blocks (4).

6. The capacitor with high sealing performance according to claim 1, characterized in that: A pin (5) is provided on the top of the capacitor column (3), the pin (5) passes through the rubber adhesive sheet (11) upwards, and a through hole (6) for the pin (5) to pass through is opened on the top shell (2).

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