Toolless positioning of a capacitor
By setting slots on the inner wall of the capacitor casing and positioning copper sheets on the busbar, the assembly process of the capacitor is simplified, the problem of needing tooling in the existing technology is solved, and production efficiency is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI CHENRUI NEW ENERGY TECH
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-14
AI Technical Summary
Existing capacitors require tooling during assembly, which is cumbersome and results in low production efficiency.
A slot is provided on the inner wall of the capacitor casing, and a positioning copper piece matching the slot is provided on the busbar to simplify the installation process.
This technology enables accurate positioning and installation of capacitors without the need for cumbersome tooling, thus improving production efficiency.
Smart Images

Figure CN224501693U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic components technology, specifically to a tooling-free positioning capacitor. Background Technology
[0002] Capacitors play a vital role in circuits for tuning, bypassing, coupling, and filtering. A capacitor mainly consists of a casing, capacitor core, potting compound, busbars, and lead-out electrodes. Currently, assembling capacitors requires tooling to ensure the capacitor core is properly installed, resulting in cumbersome operations and low production efficiency. Summary of the Invention
[0003] To solve the above-mentioned technical problems, this utility model provides a tooling-free positioning capacitor, which can simplify installation and improve production efficiency.
[0004] The technical solution is as follows: a tooling-free positioning capacitor, comprising a shell, a capacitor core and a potting compound, wherein the positive and negative terminals of the capacitor core are respectively connected to a busbar, and the busbar is provided with lead-out electrodes. The feature is that the inner walls on both sides of the shell are respectively provided with slots, and the two sides of the busbar are respectively provided with positioning copper sheets with the same width as the slots.
[0005] A further feature is that the slot is composed of two symmetrically arranged L-shaped strips;
[0006] The capacitor core is composed of two cores arranged side by side connected in parallel;
[0007] Each of the busbars is provided with two connecting copper plates that are connected to the capacitor core;
[0008] The length of the positioning copper piece is the same as the height of the slot.
[0009] With this invention, a slot is provided on the inner wall of the outer shell. When the capacitor core is welded to the busbar and installed into the outer shell, it is only necessary to align the positioning copper piece with the slot and insert it. There is no need to use cumbersome tooling for positioning. The installation operation is simple and the production efficiency is improved. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a vertical diagram of the outer shell structure;
[0012] Figure 3 This is a top view of the outer shell structure;
[0013] Figure 4 Front view showing the connection between the busbar and the lead-out electrodes;
[0014] Figure 5 Top view showing the connection between the busbar and the lead-out electrodes;
[0015] Figure 6 This is a schematic diagram showing the connection between the capacitor core and the busbar.
[0016] Figure 7 A 3D view of a capacitor core being installed in a housing;
[0017] Figure 8 Top view of the capacitor core being installed in the housing. Detailed Implementation
[0018] See Figures 1 to 8 As shown, a tooling-free positioning capacitor includes a casing 1, a capacitor core 2, and a potting compound 8. The positive and negative terminals of the capacitor core 2 are connected to busbars 3, respectively. Lead-out electrodes 4 are provided on the busbars 3. The inner walls of both sides of the casing 1 are provided with slots 5, each slot 5 consisting of two symmetrically arranged L-shaped strips. Positioning copper pieces 6 with the same width as the slots 5 are provided on both sides of the busbars 3. The length of the positioning copper pieces 6 is also the same as the height of the slots 5, ensuring the lead spacing and exposed dimensions. Each busbar 3 is provided with two connecting copper pieces 7 that are connected to the capacitor core 2.
[0019] The capacitor core 2 is composed of two cores arranged side by side connected in parallel, which can increase the overcurrent capacity, and is arranged laterally inside the housing 1.
[0020] The outer shell 1 is made of PPS or other plastics with a temperature resistance of ≥125℃.
[0021] During assembly, first install the lead-out electrodes 4 on the two busbars 3, then connect the busbars 3 to the positive and negative terminals of the capacitor core 2, position the positioning copper sheet 6 in the middle of the two ends of the capacitor, then align the slot and place the capacitor core 2 into the outer shell 1 until the capacitor core 2 contacts the inner bottom surface of the outer shell 1, while the upper end of the positioning copper sheet 6 is flush with the upper end surface of the slot 5, and finally inject potting compound into the outer shell 1.
Claims
1. A tooling-free positioning capacitor, comprising a casing, a capacitor core, and a potting compound, wherein the positive and negative terminals of the capacitor core are respectively connected to a busbar, and the busbar is provided with lead-out electrodes, characterized in that, The inner walls on both sides of the outer casing are respectively provided with slots, and the two sides of the busbar are respectively provided with positioning copper plates with the same width as the slots.
2. The tooling-free positioning capacitor according to claim 1, characterized in that, The slot is composed of two symmetrically arranged L-shaped strips.
3. A tooling-free positioning capacitor according to claim 1, characterized in that, The capacitor core is composed of two cores arranged side by side connected in parallel.
4. A tooling-free positioning capacitor according to claim 1, characterized in that, Each of the busbars is provided with two connecting copper plates that are connected to the capacitor core.
5. A tooling-free positioning capacitor according to claim 1, characterized in that, The length of the positioning copper piece is the same as the height of the slot.