Capacitor electrode sealing structure
By designing a closed efficiency-enhancing mechanism and a plastic positioning part, the problem of insufficient capacitor sealing was solved, enabling smooth insertion of the electrode body and stability of the sealing effect, thereby reducing production costs and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-07
AI Technical Summary
Current capacitors rely on a precise fit between the plastic casing and the electrodes to improve sealing, which requires high processing precision, makes it difficult to achieve absolute tightness, and is prone to leakage, increasing production costs and reducing efficiency.
The system employs a closed efficiency-enhancing mechanism, including a sealing ring and a plastic positioning part. The sealing ring is pre-embedded in the mounting ring groove and fits tightly against the inner wall of the capacitor's plastic shell after the electrode body is inserted. Combined with the elastic clip and shrink groove design, this ensures that the electrode body can be smoothly inserted and maintains a sealing effect.
It significantly enhances the sealing performance between the capacitor's plastic casing and the electrode body, reduces the risk of leakage, improves production efficiency, and reduces rework.
Smart Images
Figure CN224096563U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of electrode sealing, in particular to a capacitor electrode sealing structure. BACKGROUND
[0002] The previous capacitor mainly relies on the precise cooperation between the plastic shell and the electrode in the improvement of the sealing property. However, this method has extremely high requirements for the machining precision of the fittings, not only needs the operator to have superb skill level, but also is difficult to achieve absolute tightness in the cooperation process. In addition, due to the high overall design of the product, it directly leads to the improvement of the filling material liquid level, and then applies a huge pressure to the bottom electrode. In this high pressure environment, the filling material is prone to leakage, and once leakage occurs, a large amount of manual work is needed for repair, which not only increases the production cost, but also seriously reduces the production efficiency. SUMMARY
[0003] To solve the above technical problems, a capacitor electrode sealing structure is provided to solve the problems in the background art.
[0004] To achieve the above purpose, the utility model adopts the technical scheme of: a capacitor electrode sealing structure, comprising a capacitor plastic shell, a mounting hole position opened at the bottom of the capacitor plastic shell, and an electrode main body penetrating the mounting hole position, further comprising a closed efficiency improving mechanism for improving the internal sealing property of the capacitor plastic shell.
[0005] The closed efficiency improving mechanism is mainly composed of a sealing ring and a plastic positioning part, an installation ring groove is circumferentially opened on the outer wall of the top of the electrode main body, the sealing ring is embedded in the installation ring groove and abuts against the inner wall of the capacitor plastic shell, a contraction groove is opened on the outer wall below the electrode main body, and the plastic positioning part is located in the contraction groove.
[0006] The plastic positioning part is mainly composed of an elastic clamping piece and a contraction traction piece.
[0007] Preferably, the elastic clamping piece comprises a positioning sheet located at the opening of the contraction groove in an inclined manner, the oblique upper end of the positioning sheet abuts against the bottom surface of the capacitor plastic shell, and a plastic bending piece is fixed between the oblique lower end of the positioning sheet and the inner wall of the bottom end of the contraction groove.
[0008] Preferably, the inner wall of the opening of the contraction groove is further fixed with a supporting block tightly contacting the outer side surface of the plastic bending piece.
[0009] Preferably, the contraction traction piece comprises a rotating sleeve rotatable on the outer periphery of the bottom end of the electrode body, a movable piece fixed vertically on the inner wall of the rotating sleeve, and a pull rope fixed on the movable piece, the end of the pull rope penetrating into the contraction slot and being fixed with the positioning piece, and a push piece being further fixed on the inner wall of the rotating sleeve.
[0010] Preferably, a fixed cylinder is fixed in the inner wall of the push piece, an elastic telescopic rod elastically sliding in the fixed cylinder, one end of the telescopic rod being fixed with a positioning ball abutting against the bottom surface of the electrode body, the other end of the telescopic rod penetrating out of the fixed cylinder, the bottom surface of the electrode body being further provided with a positioning groove matched with the positioning ball, and the positioning groove and the positioning ball being on the same circumference.
[0011] Preferably, the inner side of the rotating sleeve is further provided with a fixed sleeve in the form of a circular ring and fixed with the bottom surface of the electrode body, a torsion spring being further provided outside the fixed sleeve, and the two ends of the torsion spring being fixed with the rotating sleeve and the fixed sleeve respectively.
[0012] Preferably, a turn head fixed with the inner side wall of the contraction slot is provided on the wire of the pull rope, and the turn head distributes the pull rope in the form of L.
[0013] Preferably, an annular sliding groove is provided on the outer periphery of the bottom end of the electrode body, and a sliding ring fixed with the top end of the rotating sleeve is sliding in the annular sliding groove.
[0014] Compared with the prior art, the utility model has the advantages that:
[0015] (1) By means of the sealing ring in the closed efficiency-improving mechanism, the sealing ring is embedded in the installation ring groove in advance before the electrode body is inserted into the installation hole, and when the electrode body is completely inserted into the installation hole, the sealing ring is extruded, tightly adheres to the inner wall of the bottom end of the capacitor plastic shell, and is deformed to a certain extent, so that the sealing performance is significantly enhanced, and the sealing effect between the capacitor plastic shell and the electrode body reaches the design standard.
[0016] (2) By means of the elastic clamping piece, the positioning piece abuts against the inner wall of the installation hole in advance when the electrode body is prepared to be inserted into the installation hole, and with the gradual insertion of the electrode body, the positioning piece rotates towards the inner side of the contraction slot with the plastic-shaped bent piece as the center, and at the same time, the plastic-shaped bent piece is folded, so that the electrode body can be more smoothly pushed into the installation hole, and when the electrode body is finally inserted into place, the positioning piece is out of the extrusion environment of the inner wall of the installation hole, the extrusion force disappears, the positioning piece returns to the initial state and contacts the bottom surface of the capacitor plastic shell, and then the electrode body is positioned to better maintain the deformation degree of the sealing ring.
[0017] (3) By the setting of the support block, the shaping elbow can be limited to fold outward and the positioning sheet can be limited to expand away from the side of the electrode main body to some extent, so that the positioning sheet is prevented from expanding outward after abutting against the capacitor plastic shell, the electrode main body is prevented from rising under the elastic force of the sealing ring, the sealing ring is prevented from relaxing the compression effect, and the sealing effect between the capacitor plastic shell and the electrode main body is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a whole structure schematic view of the utility model;
[0019] Figure 2 It is a bottom structure schematic view of the utility model;
[0020] Figure 3 It is an internal structure schematic view of the utility model;
[0021] Figure 4 It is the utility model Figure 3 It is a structure schematic view of A place in the utility model;
[0022] Figure 5 It is an internal structure schematic view of the fixed cylinder of the utility model.
[0023] Reference signs in the drawing are:
[0024] 1, capacitor plastic shell; 2, electrode main body; 3, installation ring groove; 4, sealing ring; 5, shrinkage groove; 6, positioning sheet; 7, shaping elbow; 8, support block; 9, pull rope; 10, elbow; 11, operating sleeve; 12, sliding ring; 13, movable sheet; 14, fixed sleeve; 15, torsion spring; 16, push sheet; 17, fixed cylinder; 18, telescopic rod; 19, positioning ball; 20, movable ring; 21, compression spring; 22, positioning groove. DETAILED DESCRIPTION
[0025] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art.
[0026] Referring to Figures 1-5 As shown in the figure, a capacitor electrode sealing structure comprises a capacitor plastic shell 1, an installation hole position provided at the bottom of the capacitor plastic shell 1, and an electrode main body 2 penetrating into the installation hole position.
[0027] The electrode main body 2 is penetrated into the installation hole position, so that the installation hole position can be blocked, and the inside of the capacitor plastic shell 1 is sealed.
[0028] But this sealing method, mainly depends on the precise fit between the capacitor plastic shell 1 and the electrode body 2, however, this method has a very high requirement for the processing precision of the fittings, not only need the operator to have superb skill level, but also in the process of matching often difficult to achieve absolute tight no interval, in addition, due to the overall design of the product is highly biased, which directly leads to the lifting of the filling material liquid level, and then to the bottom of the electrode body 2 exerted a huge pressure. In this high pressure environment, the filling material is prone to leakage, once the leakage, need to invest a large number of artificial repair, not only increases the production cost, but also seriously reduces the production efficiency;
[0029] In view of this, refer to Figures 1-4 It is worth noting that the sealing efficiency of the closed mechanism is improved;
[0030] The closed efficiency mechanism is mainly composed of a sealing ring 4 and a plastic positioning part. The outer wall of the top of the electrode body 2 is circumferentially provided with a mounting ring groove 3, and the sealing ring 4 is embedded in the mounting ring groove 3 and abuts against the inner wall of the capacitor plastic shell 1.
[0031] Through the setting of the closed efficiency mechanism, before the electrode body 2 penetrates into the mounting hole, the sealing ring 4 in the closed efficiency mechanism is pre-embedded in the mounting ring groove 3, and then when the electrode body 2 is completely penetrated into the mounting hole, the sealing ring 4 will be extruded, tightly fitted with the bottom end inner wall of the capacitor plastic shell 1, and deformed to a certain extent. This compression effect can significantly enhance the sealing performance and ensure that the sealing effect between the capacitor plastic shell 1 and the electrode body 2 reaches the design standard.
[0032] Further, refer to Figure 4 It is worth noting that the outer wall below the electrode body 2 is provided with a contraction groove 5, and the plastic positioning part is located in the contraction groove 5.
[0033] The plastic positioning part is mainly composed of an elastic clamping piece and a contraction traction piece.
[0034] The elastic clamping piece includes a positioning piece 6 located at the opening of the contraction groove 5 in an inclined manner. The upper end of the positioning piece 6 abuts against the bottom surface of the capacitor plastic shell 1, and the lower end of the positioning piece 6 is fixed with a plastic crank 7 between the bottom end inner wall of the contraction groove 5.
[0035] By setting the elastic clamping piece, when the electrode body 2 is prepared to be inserted into the mounting hole, the positioning piece 6 will be in advance abutted with the inner wall of the mounting hole, and as the electrode body 2 is gradually inserted, the positioning piece 6 is subjected to the continuously increasing extrusion force from the inner wall of the mounting hole, and under the action of the extrusion force, the positioning piece 6 rotates to the inside of the contraction groove 5 with the plastic-shaped elbow 7 as the center, and at the same time, the plastic-shaped elbow 7 is folded, which effectively reduces the obstruction to the insertion process of the electrode body 2, so that the electrode body 2 can be more smoothly pushed into the mounting hole.
[0036] When the electrode body 2 is finally inserted in place, the positioning piece 6 also synchronously completes the action of penetrating the inside of the mounting hole, at this time the positioning piece 6 is out of the extrusion environment of the inner wall of the mounting hole, and the extrusion force disappears, the positioning piece 6 will restore to the initial state and contact the bottom surface of the capacitor plastic shell 1, and then position the electrode body 2 to better maintain the deformation degree of the sealing ring 4.
[0037] Further, referring to Figure 4 It is worth noting that the inner wall of the open end of the contraction groove 5 is also fixed with a support block 8 which is tightly attached to the outer side of the plastic-shaped elbow 7.
[0038] By setting the support block 8, the plastic-shaped elbow 7 can be limited from folding outward and the positioning piece 6 can be limited from expanding away from the electrode body 2, so that when the positioning piece 6 abuts against the capacitor plastic shell 1, the electrode body 2 rises under the elastic force of the sealing ring 4, causing the positioning piece 6 to expand outward, resulting in the relaxation of the compression effect of the sealing ring 4 and reducing the sealing effect between the capacitor plastic shell 1 and the electrode body 2.
[0039] Further, referring to Figure 4 It is worth noting that the contraction traction piece includes a rotating sleeve 11 which can rotate around the outer periphery of the bottom end of the electrode body 2, a movable piece 13 which is fixed vertically on the inner wall of the rotating sleeve 11, and a pull rope 9 which is fixed on the movable piece 13, the end of the pull rope 9 is inserted into the contraction groove 5 and is fixedly connected with the positioning piece 6, and the inner wall of the rotating sleeve 11 is also fixed with a push piece 16.
[0040] By pushing the push piece 16, the rotating sleeve 11 can be rotated, and the movable piece 13 pulls the positioning piece 6 through the pull rope 9 in the rotation process, so that the positioning piece 6 is passively forced to shrink to the inside of the contraction groove 5, thereby quickly removing the restriction effect of the positioning piece 6 on the electrode body 2, and facilitating the manual disassembly of the electrode body 2 later.
[0041] Further, referring to Figure 2 and Figure 5As shown, it is worth mentioning that the inner wall of the dial 16 is fixed with a fixed cylinder 17, the telescopic rod 18 is elastically slid in the fixed cylinder 17, one end of the telescopic rod 18 is fixed with a positioning ball 19 abutting against the bottom surface of the electrode body 2, the other end of the telescopic rod 18 penetrates out of the fixed cylinder 17 and is fixed with a circular pulling block, the bottom surface of the electrode body 2 is further provided with a positioning groove 22 matched with the positioning ball 19, and the positioning groove 22 and the positioning ball 19 are on the same circumference;
[0042] The telescopic rod 18 is sleeved with a compression spring 21, one end of the compression spring 21 is fixedly connected with the inner wall of the fixed cylinder 17, and the other end of the compression spring 21 is fixed with a movable ring 20 in the form of a circular ring, and the movable ring 20 is tightly sleeved on the telescopic rod 18;
[0043] When the dial 16 is rotated to rotate the rotating sleeve 11 to pull the positioning piece 6, the positioning ball 19 can rotate synchronously with the dial 16 until the positioning ball 19 is moved to a position corresponding to the positioning groove 22, and then the telescopic rod 18 can be embedded in the inside of the positioning groove 22 under the elastic force of the compression spring 21 to integrally lock the dial 16 and the rotating sleeve 11, so that the pulling force of the pull rope 9 on the positioning piece 6 is locked, and the positioning piece 6 is stably stored in the inside of the contraction groove 5, so that the positioning piece 6 is not interfered with the disassembly process of the electrode body 2 due to the elastic reset of the plastic-shaped elbow 7.
[0044] Further, referring to Figure 4 As shown, it is worth mentioning that the inside of the rotating sleeve 11 is further provided with a fixed sleeve 14 in the form of a circular ring and fixedly connected with the bottom surface of the electrode body 2, the fixed sleeve 14 is sleeved with a torsion spring 15, and the two ends of the torsion spring 15 are respectively fixedly connected with the rotating sleeve 11 and the fixed sleeve 14;
[0045] When the rotating sleeve 11 is rotated, the rotating sleeve 11 can be deformed synchronously with the torsion spring 15, so that the elastic force of the torsion spring 15 is utilized, the telescopic rod 18 is pulled after the electrode body 2 is disassembled, the positioning ball 19 is withdrawn from the positioning groove 22, the fixing effect of the dial 16 and the rotating sleeve 11 is released, and then the rotating sleeve 11 can be quickly rotated under the elastic force of the torsion spring 15 to loosen the pulling of the pull rope 9 and the positioning piece 6, so that the positioning piece 6 is quickly reset.
[0046] Further, referring to Figure 4 As shown, it is worth mentioning that the wire of the pull rope 9 is sleeved with a bending head 10 fixedly connected with the inner wall of the contraction groove 5, and the bending head 10 distributes the pull rope 9 into an L shape;
[0047] Through the setting of the bending head 10, the pull rope 9 can be effectively distributed into an L shape on the inside of the contraction groove 5, the pull rope 9 pulls the positioning piece 6 horizontally, and penetrates into the inner wall of the electrode body 2 vertically, thereby reducing the wear of the pull rope 9 to a certain extent.
[0048] Further, referring toFigure 4 As shown, it is worth mentioning that the outer periphery of the bottom end of the electrode body 2 is provided with an annular sliding groove, and a sliding ring 12 fixedly connected with the top end of the rotating sleeve 11 is slidably arranged in the annular sliding groove.
[0049] Rotating the rotating sleeve 11, the sliding ring 12 can rotate in the annular sliding groove, and the sliding ring 12 cooperates with the annular sliding groove to effectively limit the rotating track of the rotating sleeve 11.
[0050] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.
Claims
1. A capacitor electrode sealing structure, comprising a capacitor plastic shell (1), a mounting hole formed at the bottom of the capacitor plastic shell (1), and an electrode body (2) passing through the mounting hole, characterized in that, It also includes a sealing and efficiency-enhancing mechanism for improving the internal sealing of the capacitor plastic shell (1); The closed efficiency improvement mechanism is mainly composed of a sealing ring (4) and a plastic positioning part. The outer wall of the top of the electrode body (2) is provided with a mounting ring groove (3) around its periphery. The sealing ring (4) is embedded in the mounting ring groove (3) and abuts against the inner wall of the capacitor plastic shell (1). The outer wall of the electrode body (2) located below the capacitor plastic shell (1) is provided with a shrinkage groove (5). The plastic positioning part is located in the shrinkage groove (5). The plastic positioning part is mainly composed of elastic clips and retractable traction components.
2. The capacitor electrode sealing structure according to claim 1, characterized in that, The elastic clip includes a positioning piece (6) that is inclined and located at the opening of the shrinkage groove (5). The upper inclined end of the positioning piece (6) abuts against the bottom surface of the capacitor plastic shell (1). A plastic bend (7) is fixed between the lower inclined end of the positioning piece (6) and the inner wall of the bottom end of the shrinkage groove (5).
3. The capacitor electrode sealing structure according to claim 2, characterized in that, A support block (8) that is in close contact with the outer side of the shaping bend (7) is also fixed on the inner wall of the opening of the shrinkage groove (5).
4. The capacitor electrode sealing structure according to claim 2, characterized in that, The retraction traction component includes a rotating sleeve (11) rotatable on the outer periphery of the bottom end of the electrode body (2), a movable piece (13) vertically fixed on the inner wall of the rotating sleeve (11), and a pull rope (9) fixed on the movable piece (13). The end of the pull rope (9) passes into the retraction groove (5) and is fixedly connected to the positioning piece (6). A paddle (16) is also fixed on the inner wall of the rotating sleeve (11).
5. A capacitor electrode sealing structure according to claim 4, characterized in that, A fixed cylinder (17) is fixedly inserted through the inner wall of the paddle (16). A telescopic rod (18) is elastically slidable inside the fixed cylinder (17). One end of the telescopic rod (18) is fixed with a positioning ball (19) that abuts against the bottom surface of the electrode body (2). The other end of the telescopic rod (18) passes through the fixed cylinder (17). The bottom surface of the electrode body (2) is also provided with a positioning groove (22) that matches the positioning ball (19). The positioning groove (22) and the positioning ball (19) are on the same circumference.
6. The capacitor electrode sealing structure according to claim 5, characterized in that, The inner side of the rotating sleeve (11) is also provided with a ring-shaped fixing sleeve (14) that is fixedly connected to the bottom surface of the electrode body (2). The fixing sleeve (14) is covered with a torsion spring (15), and the two ends of the torsion spring (15) are respectively fixedly connected to the rotating sleeve (11) and the fixing sleeve (14).
7. A capacitor electrode sealing structure according to claim 4, characterized in that, The pull rope (9) is fitted with a bend head (10) that is fixed to the inner wall of the shrink groove (5), and the bend head (10) distributes the pull rope (9) in an L shape.
8. A capacitor electrode sealing structure according to claim 4, characterized in that, An annular groove is provided on the outer periphery of the bottom end of the electrode body (2), and a sliding ring (12) that is fixed to the top end of the rotating sleeve (11) slides in the annular groove.