Novel capacitor assembly structure
The design of the horizontal snap-fit connection mechanism and positioning block solves the problems of capacitor space occupation and welding connection, realizing stable and efficient capacitor installation, adapting to applications in confined spaces and improving system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIKAIBIN AUTOMOBILE INTELLIGENT CONTROL SYSTEM (NINGBO) CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-21
AI Technical Summary
The traditional packaging process for large-capacity capacitors results in their large physical size, which takes up a lot of space. Furthermore, the welding connection method affects production efficiency and reliability, and the traditional fixing method is prone to loosening and causing failure under vibration conditions.
A horizontal snap-fit connection mechanism is adopted, which uses an interference fit to fix the capacitor to the elastic snap-fit plate inside the housing. Combined with positioning blocks and limit plates, the capacitor can be stably installed and fixed, avoiding welding and reducing height requirements.
This enables stable horizontal installation of capacitors, reduces space occupation, improves assembly efficiency and reliability, prevents vibration-induced failures, and simplifies process and material requirements.
Smart Images

Figure CN224153265U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power supply technology, specifically a new capacitor assembly structure. Background Technology
[0002] With the rapid development of automotive electronics technology, vehicle controllers, as core components, are evolving towards miniaturization, integration, and high reliability. However, the large-capacity capacitors commonly used in existing controllers are limited by traditional packaging processes, resulting in the following technical bottlenecks: To meet energy storage requirements, large-capacity capacitors are generally large in size. Traditional vertical mounting methods significantly occupy space in the height direction of the controller, directly conflicting with the design trend of lightweight and compact automotive electronic components, and limiting the adaptability of controllers in confined installation spaces (such as engine compartments and door modules). In existing technologies, the connection between capacitors and pins mostly uses welding processes, which not only require additional welding equipment and procedures, but also the welding quality is affected by the operator's skill, posing risks such as incomplete soldering and overheating damage to the capacitor, leading to low production efficiency and fluctuating yield rates. The automotive environment is constantly under vibration; traditional fixing methods (such as adhesive bonding or simple slots) are prone to capacitor displacement due to material fatigue or structural loosening, causing poor contact or short circuit faults, affecting system reliability.
[0003] Therefore, a new capacitor assembly structure is urgently needed to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a new capacitor assembly structure to solve the technical problems of traditional vertical installation methods occupying space, traditional welding methods affecting assembly efficiency when fixing capacitors and pins, and poor reliability of traditional fixing methods.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] This utility model discloses a novel capacitor assembly structure, including a housing. Inside the housing are a capacitor and pins. The housing also includes a snap-fit connection mechanism for fixing the capacitor, with the snap-fit mechanism and the capacitor connected via an interference fit. The snap-fit connection mechanism includes multiple elastic snap-fit plates that cooperate with each other on the inner wall of the housing. The tops of two opposing elastic snap-fit plates are provided with elastic clamps, the inner walls of which are arc-shaped, and the elastic snap-fit plates are inclined inwards. The inner wall of the housing has positioning blocks for positioning the capacitor. The inner wall of the housing also has multiple vertically upward mounting posts, the tops of which have insertion slots for inserting pins. The capacitor leads pass through the grooves on the mounting posts and are electrically connected to the pins.
[0007] As a preferred technical solution of this utility model, the top end of the elastic clamp is provided with a pressing guide slope.
[0008] As a preferred embodiment of this utility model, the inner wall of the housing is provided with reinforcing ribs that are perpendicular to the positioning block.
[0009] As a preferred embodiment of this utility model, the tilt angle of the elastic buckle plate is 3-5°.
[0010] As a preferred embodiment of this utility model, the distance between the two opposing elastic clamps is set to 90-95% of the capacitor diameter.
[0011] As a preferred technical solution of this utility model, the inner wall of the housing is provided with a plurality of limiting plates for limiting the position of the capacitor head.
[0012] The beneficial effects of this utility model are:
[0013] This novel capacitor assembly structure, through a snap-fit connection mechanism, allows multiple elastic snap-fit plates to cooperate in horizontally clamping the capacitor, achieving horizontal installation. This enables the conversion between capacitor diameter and height, reducing the required casing height. The capacitor can be pre-installed inside the casing, and clamping and fixing it requires no additional processes or materials. It also avoids the current practice of using welding methods to fix the capacitor and pins, which affects assembly efficiency. During assembly, the capacitor and snap-fit connection mechanism, through an interference fit, allow the capacitor to slowly move along the guide slope at the top of the elastic snap-fit plates under pressure, guiding it into the inner wall and towards the root of the elastic snap-fit plates until the capacitor is covered by multiple elastic snap-fit plates, which then fix the capacitor under the elastic force of the plates. The positioning blocks allow for quick positioning of the capacitor and prevent it from moving along the axis during vibration. Attached Figure Description
[0014] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0015] Figure 1 This is a schematic diagram of a new capacitor assembly structure according to this utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the housing of a new capacitor assembly structure according to this utility model;
[0017] Figure 3This is a schematic diagram of a new capacitor assembly structure based on the present invention, showing an elastic snap-on clamping plate.
[0018] In the diagram: 1. Housing; 2. Capacitor; 3. Pin; 4. Snap-fit connection mechanism; 5. Elastic snap-fit clamp; 6. Elastic clamp; 7. Positioning stop; 8. Push-in guide slope; 9. Reinforcing rib; 10. Limiting plate; 11. Mounting post; 12. Insertion slot. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.
[0020] Example: Figure 1 , Figure 2 and Figure 3As shown, this utility model discloses a novel capacitor assembly structure, including a housing 1. Inside the housing 1 are a capacitor 2 and pins 3. The housing 1 also includes a snap-fit connection mechanism 4 for fixing the capacitor 2. The snap-fit connection mechanism 4 and the capacitor 2 are connected by an interference fit. The snap-fit connection mechanism 4 includes multiple elastic snap-fit plates 5 that cooperate with each other on the inner wall of the housing 1. The tops of two opposing elastic snap-fit plates 5 are provided with elastic clamps 6, the inner walls of which are arc-shaped, and the elastic snap-fit plates 5 are inclined inwards. The inner wall of the housing 1 is provided with positioning blocks 7 for positioning the capacitor 2. The inner wall of the housing 1 is provided with multiple vertically upward mounting posts 11. The top of each mounting post 11 is provided with a insertion groove 12 for inserting the pins 3. The pins of the capacitor 2 pass through the grooves on the mounting posts 11 and are electrically connected to the pins 3. Through the snap-fit connection mechanism 4, the multiple elastic snap-fit plates 2 are fixedly mounted. The elastic clip plates 5 work together to horizontally clamp the capacitor 2, enabling horizontal installation of the capacitor 2. This allows for conversion between the diameter and height of the capacitor 2, reducing the height requirement of the housing 1. The capacitor 2 can be pre-installed inside the housing 1, and clamping and fixing the capacitor 2 does not require additional processes or materials. It also avoids the current situation where welding is used to fix the capacitor 2 and pin 3, which affects assembly efficiency. During assembly, the capacitor 2 and the clip connection mechanism 4, through an interference fit, allow the capacitor 2 to slowly move along the push-in guide slope 8 at the elastic clamp 6 at the top of the elastic clip plate 5 into the inner wall and towards the root of the elastic clip plate 5 under pressure, until the capacitor 2 is covered by multiple elastic clip plates 5. The elastic force of the multiple elastic clip plates 5 fixes the capacitor 2. The positioning block 7 can quickly position the capacitor 2 and prevent the capacitor 2 from moving along the axis under vibration conditions.
[0021] The top of the elastic clamp 6 is provided with a push-in guide slope 8, which facilitates the insertion of the capacitor 2 from the push-in guide slope 8 between multiple elastic buckle plates 5.
[0022] The inner wall of the housing 1 is provided with a reinforcing rib 9 that is perpendicular to the positioning block 7, which improves the stability of the positioning block 7.
[0023] The tilt angle of the elastic buckle plate 5 is 3-5°, which makes it easy to press the capacitor 2 between multiple elastic buckle plates 5 and avoids the possibility of the capacitor 2 being damaged or the elastic buckle plate 5 breaking due to excessive tilt angle exceeding the critical value.
[0024] The distance between the two opposing elastic clamps 6 is set to 90-95% of the capacitor diameter, which facilitates pressing the capacitor 2 between multiple elastic snap clamps 5.
[0025] The inner wall of the housing 1 is provided with multiple limiting plates 10 that limit the head of the capacitor 2, which makes the assembly stability of the capacitor 2 higher.
[0026] During operation, this new capacitor 2 assembly structure, through the provided snap-fit connection mechanism 4, allows multiple elastic snap-fit plates 5 to cooperate in horizontally clamping the capacitor 2, achieving horizontal installation of the capacitor 2. This allows for conversion between the diameter and height of the capacitor 2, reducing the height requirement of the housing 1. The capacitor 2 can be pre-installed in the housing 1, and clamping and fixing the capacitor 2 does not require additional processes or materials. It also avoids the situation where the current welding method for fixing the capacitor 2 and pin 3 affects assembly efficiency. During assembly, the capacitor 2 and the snap-fit connection mechanism 4, through an interference fit, allow the capacitor 2 to slowly move along the push-in guide slope 8 at the elastic clamp 6 at the top of the elastic snap-fit plate 5 into the inner wall and towards the root of the elastic snap-fit plate 5 under pressure, until the capacitor 2 is covered by multiple elastic snap-fit plates 5, and the capacitor 2 is fixed under the elastic force of the multiple elastic snap-fit plates 5.
[0027] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.
Claims
1. A new capacitor assembly structure, characterized by, Includes a housing (1), inside which is provided a capacitor (2) and a pin (3), inside which is provided a snap-fit connection mechanism (4) for fixing the capacitor (2), and the snap-fit connection mechanism (4) and the capacitor (2) are connected by an interference fit. The buckle connection mechanism (4) includes multiple elastic buckle plates (5) that cooperate with each other on the inner wall of the housing (1). The top ends of two opposing elastic buckle plates (5) are provided with elastic clamps (6). The inner wall of the elastic clamps (6) is arc-shaped, and the elastic buckle plates (5) are inclined inward. The inner wall of the housing (1) is provided with positioning blocks (7) for positioning the capacitor (2). The inner wall of the housing (1) is provided with a plurality of vertically upward mounting posts (11). The top of the mounting post (11) is provided with a insertion groove (12) for inserting a pin (3). The pin of the capacitor (2) passes through the groove provided on the mounting post (11) and is electrically connected to the pin (3).
2. A new capacitor assembly structure according to claim 1, characterized in that, The top of the elastic clamp (6) is provided with a push-in guide slope (8).
3. A new capacitor assembly structure as claimed in claim 1, wherein, The inner wall of the housing (1) is provided with reinforcing ribs (9) that are perpendicular to the positioning block (7).
4. A new capacitor assembly structure according to claim 1, wherein The tilt angle of the elastic buckle plate (5) is 3-5°.
5. A novel capacitor assembly structure according to claim 1, characterized in that, The distance between the two opposing elastic clamps (6) is set to 90-95% of the capacitor diameter.
6. A new capacitor assembly structure according to claim 1, wherein The inner wall of the housing (1) is provided with multiple limiting plates (10) that limit the head of the capacitor (2).