A positive pressure bullet
By designing a dual-elastic system for positive pressure springs, the problems of poor contact and scratching of traditional springs in high-frequency vibration environments are solved, achieving stable contact and long-term reliability in environments such as automobiles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ELECTRIC CONNECTOR TECH
- Filing Date
- 2025-06-07
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional single-arm springs have poor deformation control and stability under high-frequency vibration environments, resulting in poor contact and signal interruption. Furthermore, the elastic system lacks coordination, making it prone to lateral displacement and scratches, and thus failing to meet the long-term reliability requirements of vehicle-mounted electronic equipment.
A positive pressure spring was designed, employing a dual elastic system, including a main elastic arm and an auxiliary elastic arm, which are integrally formed through a bending process to provide additional elastic support, ensuring that the contact elastic force vector direction is perpendicular to the substrate plane, thus avoiding contact point offset and scratching.
Maintaining stable contact in high-frequency vibration environments enhances contact stability and elasticity, ensuring long-term reliability, preventing contact point slippage and scratching, and meeting the application requirements of automotive electronic devices.
Smart Images
Figure CN224367166U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of connector technology, and in particular relates to a spring. Background Technology
[0002] In the field of electrical connectors, springs are key elastic components, and their performance directly affects the stability of the equipment.
[0003] Traditional single-lever springs rely on a single elastic arm to provide contact force. While widely used, their performance requirements are increasingly demanding due to advancements in industrial automation, precision machinery, and high-end electronic equipment. Especially in high-frequency vibration environments like automobiles, single-lever springs often suffer from limited elastic force, resulting in poor deformation control and stability under dynamic loads or continuous high stress. This leads to attenuation of contact pressure with external electronic components, causing poor contact and signal interruption. Furthermore, traditional elastic contact structures generally suffer from insufficient synergy within the elastic system. A single elastic arm is prone to lateral displacement under vibration loads, causing the contact force vector to deviate from the substrate plane and resulting in contact point slippage. This not only severely affects the floating stability of the electrical contact bumps but also easily generates rigid scratches during long-term reciprocating motion, accelerating structural wear and further degrading elastic performance. Consequently, they fail to meet the long-term reliability requirements of automotive electronic equipment and other similar applications.
[0004] Therefore, it is necessary to develop a connector spring with high elasticity, scratch resistance, and good contact stability to meet the application requirements under the new circumstances. Utility Model Content
[0005] The purpose of this invention is to provide a positive pressure spring to overcome the shortcomings of the prior art.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A positive pressure spring includes a substrate, an elastic main arm, and an elastic auxiliary arm. The substrate is used for soldering to a PCB board. The elastic main arm includes a deformation arm formed by bending outward from the rear edge of the substrate, a support arm formed by bending upward from the deformation arm, a suction arm parallel to the substrate formed by bending horizontally forward from the top of the support arm, a contact arm for contacting external electronic components formed by bending obliquely upward from the end of the suction arm, and a downward pressing arm formed by bending downward from the end of the contact arm. The downward pressing arm is perpendicular to the substrate. The elastic auxiliary arm includes two mirror-symmetrical elastic arms, which extend from the left and right edges of the substrate and are bent upward multiple times. Each elastic arm also has a support plate horizontally bent at its top, parallel to the substrate. The downward pressing arm of the elastic main arm continuously abuts against the support plate.
[0008] Furthermore, the deformation arm is higher than the substrate. After extending outward from the rear edge of the substrate, the deformation arm is formed by bending vertically upward, bending horizontally backward, bending vertically downward, and then bending horizontally backward in sequence.
[0009] Furthermore, the elastic support arm extends from both sides of the substrate and is formed by bending upward, bending inward, bending upward again, and then bending horizontally outward.
[0010] Furthermore, the support plate is stamped with upwardly protruding protrusions.
[0011] Furthermore, the end of the lower pressure arm is bent to form a lower pressure plate that abuts against the protrusion.
[0012] Furthermore, the lower pressure plate is bent into an anti-detachment limiting arm, which cooperates with the protrusion to prevent detachment.
[0013] Furthermore, the outer edge of the support plate extends upward and is folded to form a scratch-resistant protective plate that covers the anti-detachment limiting arm.
[0014] Furthermore, the arc-shaped transition portion between the contact arm and the lower pressure arm is stamped with upwardly protruding electrical contact bumps.
[0015] Furthermore, solder holes are formed on the substrate.
[0016] Compared with the prior art, the beneficial effects of the positive pressure spring provided by this utility model are as follows:
[0017] 1. By setting the elastic auxiliary arm, this utility model can provide additional elastic support for the positive pressure spring, so that the positive pressure spring has a greater contact elastic force, and can still ensure stable contact with external electronic components even in high-frequency vibration environments such as automobiles.
[0018] 2. Through the synergistic effect of the dual elastic system, this utility model not only ensures that the vector direction of the contact elastic force is always perpendicular to the substrate plane, preventing the contact point from shifting or slipping, but also ensures that the electrical contact protrusion floats smoothly in the vertical direction, significantly improving the contact stability of the positive pressure spring; it also effectively avoids rigid scraping between the main elastic arm and the auxiliary elastic arm, ensuring the long-term and stable collaborative work of the positive pressure spring. Attached Figure Description
[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:
[0020] Figure 1A schematic diagram of the overall structure of a positive pressure spring sheet provided in an embodiment of this utility model. Figure 1 ;
[0021] Figure 2 A schematic diagram of the overall structure of a positive pressure spring sheet provided in an embodiment of this utility model. Figure 2 ;
[0022] Figure 3 A front view of a positive pressure spring sheet provided for an embodiment of this utility model;
[0023] Figure 4 A cross-sectional view of a positive pressure spring sheet provided for an embodiment of this utility model.
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 1-Baseboard, 101-Solder hole, 2-Deformation arm, 3-Support arm, 4-Suction arm, 5-Contact arm, 501-Electrical contact bump, 6-Pressing arm, 601-Pressing plate, 602-Anti-detachment limiting arm, 7-Elastic support arm, 701-Support plate, 702-Protrusion, 703-Scratch-resistant guard plate. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0027] This utility model embodiment provides a positive pressure spring sheet, integrally formed using a bending process, comprising a base plate 1, an elastic main arm, and an elastic auxiliary arm. Specifically:
[0028] like Figures 1 to 4 As shown, in this embodiment, the bottom surface of the substrate 1 is the welding surface, and a welding hole 101 is provided in the middle of the substrate 1 so that the spring can be firmly welded and fixed to the PCB board.
[0029] The elastic main arm includes a deformation arm 2, a support arm 3, a suction arm 4, a contact arm 5, and a pressing arm 6. The deformation arm 2 is suspended above the substrate 1, providing initial pre-pressure stroke for the elastic main arm and storing elastic potential energy. The deformation arm 2 extends outward from the rear edge of the substrate 1, and is formed by sequentially bending vertically upward, horizontally backward, vertically downward, and then horizontally backward again. The support arm 3 is formed by bending the end of the deformation arm 2 upward. The suction arm 4 is formed by bending the top of the support arm 3 horizontally forward and is parallel to the substrate 1, facilitating automatic suction and transfer of the positive pressure spring during assembly in electronic products. The contact arm 5 is formed by bending the end of the suction arm 4 diagonally upward, for contacting external electronic components. The pressing arm 6 is formed by bending the end of the contact arm 5 vertically downward, and is perpendicular to the substrate 1 to ensure the stability of the downward pressure transmission direction. The arc-shaped transition portion between the contact arm 5 and the pressing arm 6 is also stamped with upward-protruding electrical contact bumps 501 to ensure better contact with external electronic components and form electrical conductivity.
[0030] The elastic auxiliary arm provides additional elastic support to the positive pressure spring, giving it greater contact elasticity and ensuring stable contact with external electronic components even in high-frequency vibration environments such as those found in automobiles. The elastic auxiliary arm includes two mirror-symmetrical elastic arms 7, which extend from the left and right edges of the substrate 1 and are bent upwards multiple times. After extending from the sides of the substrate 1, the elastic arms 7 are successively bent upwards, inwards, upwards again, and then horizontally outwards. The horizontally bent plane at the top of the elastic arm 7 forms a support plate 701, which is parallel to the substrate 1. The support plate 701 also has an upwardly protruding spherical protrusion 702 stamped on it. Correspondingly, the lower pressure arm 6 of the main elastic arm is bent at its end to form a lower pressure plate 601 that abuts against the protrusion 702. The lower pressure plate 601 continuously abuts against the support plate 701.
[0031] When an external component presses down on contact arm 5, both the elastic main arm and the elastic auxiliary arm undergo elastic deformation simultaneously. The pressing arm 6 presses down synchronously, transmitting the pressure vertically downwards to the protrusion 702 of the elastic auxiliary arm via the pressing plate 601. The elastic support arm 7 of the elastic auxiliary arm undergoes elastic deformation under pressure, generating a supporting reaction force in the same direction as the elastic main arm. This dual elastic system works synergistically, not only preventing rigid scraping between the elastic main arm and the elastic auxiliary arm, but also ensuring that the vector direction of the contact elastic force is always perpendicular to the plane of substrate 1. This guarantees that the electrical contact protrusion 501 floats smoothly in the vertical direction, significantly improving contact stability.
[0032] Furthermore, the lower pressure plate 601 is bent to form an anti-detachment limiting arm 602, which covers the radial sidewall of the spherical protrusion 702 to prevent the spring from detaching when overloaded. The outer edge of the support plate 701 extends upward and is folded to form a scratch-resistant guard plate 703, which covers the outer contour of the lower pressure plate 601 and the anti-detachment limiting arm 602 to avoid interference and scratches with surrounding components during assembly or operation.
[0033] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A positive pressure spring, characterized in that, include: Substrate (1), used for soldering to PCB board; The elastic main arm includes a deformation arm (2) formed by bending outward from the rear edge of the substrate (1), a support arm (3) formed by bending upward from the deformation arm (2), a suction arm (4) parallel to the substrate (1) formed by bending horizontally forward from the top of the support arm (3), a contact arm (5) for contacting external electronic components formed by bending obliquely upward from the end of the suction arm (4), and a downward pressing arm (6) formed by bending downward from the end of the contact arm (5). The downward pressing arm (6) is perpendicular to the substrate (1). The elastic auxiliary arm includes two mirror-symmetrical elastic arms (7). The two elastic arms (7) extend from the left and right edges of the substrate (1) and are bent upwards multiple times. Each elastic arm (7) has a support plate (701) that is horizontally bent at the top and parallel to the substrate (1). The lower arm (6) of the elastic main arm continuously abuts against the support plate (701).
2. The positive pressure spring sheet according to claim 1, characterized in that: The deformation arm (2) is higher than the substrate (1). The deformation arm (2) extends outward from the rear edge of the substrate (1) and is formed by bending vertically upward, bending horizontally backward, bending vertically downward, and then bending horizontally backward in sequence.
3. The positive pressure spring sheet according to claim 1, characterized in that: The elastic support arm (7) extends from both sides of the substrate (1) and is formed by bending upward, bending inward, bending upward again, and then bending outward horizontally.
4. A positive pressure spring sheet according to claim 3, characterized in that: The support plate (701) has an upwardly protruding protrusion (702) formed by stamping.
5. A positive pressure spring sheet according to claim 4, characterized in that: The end of the lower pressure arm (6) is bent to form a lower pressure plate (601) that abuts against the protrusion (702).
6. A positive pressure spring sheet according to claim 5, characterized in that: The lower pressure plate (601) is bent into an anti-detachment limiting arm (602), which cooperates with the protrusion (702) to prevent detachment.
7. A positive pressure spring sheet according to claim 6, characterized in that: The outer edge of the support plate (701) extends upward and is folded to form a scratch-resistant guard plate (703) covering the anti-detachment limiting arm (602).
8. A positive pressure spring sheet according to claim 1, characterized in that: The arc-shaped transition portion between the contact arm (5) and the lower pressure arm (6) is stamped with upward-protruding electrical contact bumps (501).
9. A positive pressure spring sheet according to claim 1, characterized in that: The substrate (1) has solder holes (101).