A direct current support capacitor
By designing a nameplate mounting mechanism on the DC support capacitor and utilizing the cooperation of locking rods and connecting blocks, the problem of nameplates easily falling off is solved, achieving stable installation and long-term clear readability of the nameplates, thus improving the identification effect and maintenance management convenience of the capacitor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINCHENG (LIAONING) POWER CAPACITOR TECH CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-16
AI Technical Summary
The nameplates on existing DC support capacitors are prone to drying out and losing their adhesiveness over time, causing them to fall off, which affects the labeling effect and subsequent maintenance and management.
The nameplate mounting mechanism, including a top cover and a nameplate box, achieves a stable connection through the cooperation of a locking rod and a connecting block. Combined with a C-shaped clamping pad and a sealing strip design, it ensures the secure installation and protection of the nameplate.
This effectively prevents the nameplate from falling off, ensuring that the nameplate remains clear and legible for a long time, thus improving the identification effect and maintenance convenience of the capacitor.
Smart Images

Figure CN224366682U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitor technology, and in particular to a DC-supported capacitor. Background Technology
[0002] A capacitor is a passive electronic component that can store electric charge and electrical energy. Its core function is based on the principle of electrostatic field to achieve the temporary storage and release of energy. It consists of two mutually insulated conductors and an insulating dielectric in between. When a voltage is applied between the two plates, positive charges accumulate on one plate and negative charges accumulate on the other plate, forming an electric field and storing electrical energy.
[0003] Existing patent CN222462605U discloses a DC support capacitor, including a protective shell. A mounting assembly is located on the top of the protective shell, and a heat dissipation assembly is located inside the shell. By using the mounting assembly, an extension plate extends into and abuts against the mounting groove. When the fixing rod is pulled out, a connecting spring quickly lifts the mounting cover, separating it from the protective shell. This improves work efficiency during maintenance and disassembly, and facilitates installation, offering convenience. The heat dissipation assembly includes a second heat dissipation plate, heat dissipation fins, and a first heat dissipation plate on the outer surface of the capacitor body, sequentially enclosing the capacitor body and dissipating heat. The second heat dissipation plate, heat dissipation fins, and first heat dissipation plate are secured with fixing ropes, facilitating installation and disassembly and improving heat dissipation efficiency.
[0004] In the aforementioned prior art, in the existing structure of DC-supported capacitors, although the nameplate attached to the outside of the casing is used to identify capacitor information, the nameplate is prone to drying out and losing its adhesiveness over time, which can lead to it falling off, affecting the identification effect of the capacitor and subsequent maintenance and management. Utility Model Content
[0005] The purpose of this utility model is to provide a DC support capacitor, which aims to solve the technical problem that in the existing structure of DC support capacitors, although the nameplate attached to the outside of the outer shell is used to identify capacitor information, the nameplate is easy to dry out and lose its adhesiveness over time, resulting in it falling off, which affects the identification effect of the capacitor and subsequent maintenance and management.
[0006] To achieve the above objectives, this utility model employs a DC-supported capacitor, comprising a nameplate mounting mechanism and a DC-supported capacitor body. The nameplate mounting mechanism includes a top cover and a nameplate box. The bottom of the top cover has two connecting slots, and one inner side of each connecting slot has a movable hole. The end of the movable hole away from the connecting slot communicates with a movable cavity. A locking rod is disposed within the movable hole, and a linkage plate is disposed at one end of the locking rod. The linkage plate extends into the movable cavity, and a return spring is disposed between the linkage plate and the movable cavity. One end of the locking rod is provided with a pressing rod, which extends to the outside of the top cover. The front end of the nameplate box has an observation through hole with a transparent film. The nameplate box has a placement slot with the nameplate body placed inside. The top of the placement slot is connected to an insertion slot. Both ends of the insertion slot are provided with connecting blocks, and one side of the connecting block has a locking hole. The top cover is closed to the top of the nameplate box through the connecting block, with the connecting block located in the connecting slot. The locking rod is inserted into the locking hole.
[0007] The nameplate box has C-shaped clamping pads on both inner sides, and the nameplate body is disposed between the two C-shaped clamping pads.
[0008] The nameplate box has C-shaped clamping pads on both inner sides, and the nameplate body is disposed between the two C-shaped clamping pads.
[0009] The top cover has a sealing strip at its bottom, the nameplate box has a sealing groove at its top, and the sealing strip is located within the sealing groove.
[0010] The connecting block has a bevel on one side, and the locking rod has a round head at the other end, which is adapted to the bevel.
[0011] This utility model discloses a DC-supported capacitor, comprising a nameplate mounting mechanism and a DC-supported capacitor body. The nameplate mounting mechanism includes a top cover and a nameplate box. The bottom of the top cover has two connecting grooves, and an inner side of one connecting groove has a movable hole. The end of the movable hole away from the connecting groove communicates with a movable cavity. A locking rod is disposed within the movable hole, and a linkage plate is disposed at one end of the locking rod, extending into the movable cavity. A return spring is disposed between the linkage plate and the movable cavity. A pressing rod is disposed at the end of the linkage plate away from the locking rod, extending to the outer side of the top cover. The front end face of the nameplate box has an observation channel. The device includes an observation through-hole with a transparent film, a placement slot inside the nameplate box, a feeding slot above the placement slot, and connecting blocks at both ends of the feeding slot. Each connecting block has a locking hole on one side. By placing the nameplate body inside the nameplate box, the top cover is closed onto the top of the nameplate box, and the locking rod is inserted into the locking hole to achieve a stable connection between the top cover and the nameplate box. This avoids the problem of traditional adhesive nameplates easily falling off, thus providing comprehensive protection for the nameplate body, ensuring its long-term legibility, and effectively improving the labeling effect of the capacitor and the convenience of subsequent maintenance and management. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a three-dimensional view of the present invention.
[0014] Figure 2 This is the front view of this utility model.
[0015] Figure 3 This is the utility model Figure 2 A cross-sectional view along line AA in the middle.
[0016] Figure 4 This is the utility model Figure 3 A magnified view of a section at point B.
[0017] Figure 5 This is a schematic diagram of the structure of the upper cover and the shield in this utility model.
[0018] Figure 6 This is a structural schematic diagram of the nameplate box in this utility model.
[0019] Figure 7 This is a structural schematic diagram of the nameplate mounting mechanism in this utility model.
[0020] Figure 8 This is the utility model Figure 7 A cross-sectional view of the CC line.
[0021] 1-DC support capacitor body, 2-top cover, 3-nameplate box, 4-connecting slot, 5-moving hole, 6-moving cavity, 7-locking rod, 8-linkage plate, 9-reset spring, 10-pressing rod, 11-observation through hole, 12-transparent film, 13-placement slot, 14-nameplate body, 15-placement slot, 16-connecting block, 17-locking hole, 18-C-shaped clamping pad, 19-shielding plate, 20-conical surface, 21-sealing strip, 22-sealing slot, 23-sloping surface, 24-round head. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0023] Please see Figures 1-8 This utility model provides a DC support capacitor, including a nameplate mounting mechanism and a DC support capacitor body 1. The nameplate mounting mechanism includes an upper cover 2 and a nameplate box 3. The upper cover 2 has two connecting grooves 4 on its lower side. One inner side of each connecting groove 4 has a movable hole 5. The end of the movable hole 5 away from the connecting groove 4 is connected to a movable cavity 6. A locking rod 7 is provided in the movable hole 5. A linkage plate 8 is provided at one end of the locking rod 7. The linkage plate 8 extends into the movable cavity 6, and a return spring 9 is provided between the linkage plate 8 and the movable cavity 6. A pressing rod is provided at the end of the linkage plate 8 away from the locking rod 7. 10, and the pressing rod 10 extends to the outside of the upper cover 2. The front end face of the nameplate box 3 has an observation through hole 11, and a transparent film 12 is provided at the observation through hole 11. The nameplate box 3 has a placement groove 13, and the nameplate body 14 is placed in the placement groove 13. The upper part of the placement groove 13 is connected to an insertion groove 15. Both ends of the insertion groove 15 are provided with connecting blocks 16. One side of the connecting block 16 has a locking hole 17. The upper cover 2 is closed to the top of the nameplate box 3 through the connecting block 16, and the connecting block 16 is located in the connecting groove 4. The locking rod 7 is inserted into the locking hole 17.
[0024] In this embodiment, the locking rod 7 and the locking hole 17 on the connecting block 16 are used to achieve a stable connection between the upper cover 2 and the nameplate box 3, effectively avoiding the problem of traditional adhesive nameplates easily falling off. Meanwhile, the placement slot 13 inside the nameplate box 3 provides a safe storage space for the nameplate body 14, and the design of the observation hole 11 and the transparent film 12 facilitates viewing the nameplate information and prevents external corrosion, thus ensuring the long-term clear readability of the nameplate and improving the identification effect and maintenance convenience of the capacitor.
[0025] Furthermore, C-shaped clamping pads 18 are provided on both inner sides of the nameplate box 3, and the nameplate body 14 is disposed between the two C-shaped clamping pads 18.
[0026] In this embodiment, the nameplate body 14 can be securely clamped between the two C-shaped clamping pads 18 by means of the C-shaped clamping pads 18, which further enhances the stability of the nameplate body 14 in the nameplate box 3.
[0027] Furthermore, a baffle plate 19 is provided above the upper cover 2, and a conical surface 20 is provided above the baffle plate 19.
[0028] In this embodiment, the baffle 19 provides additional physical protection, preventing dust from falling directly onto the top cover 2, while the conical surface 20 reduces the accumulation of liquid on the baffle 19.
[0029] Furthermore, a sealing strip 21 is provided below the upper cover 2, and a sealing groove 22 is provided above the nameplate box 3, with the sealing strip 21 located within the sealing groove 22.
[0030] In this embodiment, the design of the sealing strip 21 and the sealing groove 22 effectively prevents dust and other external substances from entering the interior of the nameplate box 3, protecting the nameplate body 14 from corrosion and damage.
[0031] Furthermore, one side of the connecting block 16 has an inclined surface 23, and the other end of the locking rod 7 has a round head 24, which is adapted to the inclined surface 23.
[0032] In this embodiment, the design of the inclined surface 23 and the round head 24 allows the locking rod 7 to slide smoothly into the locking hole 17 along the inclined surface 23 when the top cover 2 is installed, realizing a quick and convenient connection between the top cover 2 and the nameplate box 3. At the same time, by pressing the pressing rod 10, the locking rod 7 is disengaged from the locking hole 17, thereby easily removing the top cover 2 and improving maintenance efficiency.
[0033] When using this utility model, when installing the nameplate body 14, first place the nameplate body 14 into the placement slot 13 of the nameplate box 3 through the placement slot 15. At this time, the nameplate body 14 is placed between the two C-shaped clamping pads 18 to secure it and prevent displacement. Next, close the upper cover 2 on top of the nameplate box 3, so that the connecting block 16 enters the connecting slot 4. The inclined surface 23 on one side of the connecting block 16 contacts the round head 24 at the other end of the locking rod 7. As the upper cover 2 continues to press down, the round head 24 slides along the inclined surface 23, pushing the locking rod 7 into the movable cavity 6 and compressing the return spring 9. When the upper cover 2 is fully closed, the locking rod... 7. Under the action of the return spring 9, it springs back and inserts into the locking hole 17 of the connecting block 16, realizing the locking connection between the upper cover 2 and the nameplate box 3. At the same time, the sealing strip 21 below the upper cover 2 enters the sealing groove 22 above the nameplate box 3 to form a sealing structure. In daily use, the nameplate information can be viewed through the observation hole 11 on the front face of the nameplate box 3. The transparent film 12 can prevent external substances from corroding the nameplate body 14. When it is necessary to replace or repair the nameplate body 14, simply press the pressing rod 10 on the outside of the upper cover 2, and push the locking rod 7 out of the locking hole 17 through the linkage plate 8 to easily remove the upper cover 2 for replacement or repair of the nameplate body 14.
[0034] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. A DC-supported capacitor, characterized in that, The device includes a nameplate mounting mechanism and a DC support capacitor body. The nameplate mounting mechanism includes a top cover and a nameplate box. The bottom of the top cover has two connecting slots. One inner side of each connecting slot has a movable hole. The end of the movable hole away from the connecting slot is connected to a movable cavity. A locking rod is provided in the movable hole. One end of the locking rod is provided with a linkage plate. The linkage plate extends into the movable cavity, and a return spring is provided between the linkage plate and the movable cavity. The end of the linkage plate away from the locking rod is provided with a pressing rod, and the pressing rod extends to the outside of the top cover. The front end of the nameplate box has an observation through hole, and a transparent film is provided at the observation through hole. The nameplate box has a placement slot, in which the nameplate body is placed. The top of the placement slot is connected to an insertion slot. Both ends of the insertion slot are provided with connecting blocks. One side of each connecting block has a locking hole. The top cover is closed to the top of the nameplate box through the connecting blocks, and the connecting blocks are located in the connecting slot. The locking rod is inserted into the locking hole.
2. The DC-supported capacitor as described in claim 1, characterized in that, The nameplate box is provided with C-shaped clamping pads on both inner sides, and the nameplate body is disposed between the two C-shaped clamping pads.
3. The DC-supported capacitor as described in claim 2, characterized in that, A baffle is provided above the top cover, and a conical surface is provided above the baffle.
4. The DC-supported capacitor as described in claim 3, characterized in that, A sealing strip is provided below the top cover, and a sealing groove is provided above the nameplate box, with the sealing strip located within the sealing groove.
5. The DC-supported capacitor as described in claim 4, characterized in that, One side of the connecting block also has a bevel, and the other end of the locking rod has a round head that is adapted to the bevel.