Hyperbolic elastic needle structure
By designing a hyperbolic elastic pin structure, the hyperbolic socket formed by the spring wire engages with the inner pin, solving the problem of unstable contact of traditional elastic pins under vibration and impact, achieving stable contact and low contact resistance, and improving the reliability of the connector.
Patent Information
- Application Number
- CN202421173096.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Traditional elastic needle structures are prone to momentary breakage and unstable contact during vibration and shock tests, failing to meet the reliability requirements of aerospace technology.
It adopts a hyperbolic elastic needle structure, consisting of an outer jacket, a hyperbolic contact assembly, a spring, and an inner insert. The spring wire forms a hyperbolic socket that engages with the inner insert, and the spring compression provides a stable engagement force to ensure reliable contact.
It achieves stable contact of the elastic pin contacts under vibration and shock, with low contact resistance and strong vibration and shock resistance, thus improving the reliability of the connector.
Smart Images
Figure CN223757734U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hyperbolic elastic needle structure applied to the elastic end of elastic docking electric connectors. BACKGROUND
[0002] Elastic docking electric connectors are often applied to docking mechanisms without separation force, and circuit conduction is realized by the contact of elastic ends and rigid end contact pieces, and stable contact is the basis for guaranteeing good performance. The traditional elastic needle structure contact is unstable, and the problem of greater than 1us instantaneous interruption is prone to occur in the vibration impact test process, and a kind of elastic needle structure with reliable contact, stable contact resistance and proper elasticity can better meet the demand of contemporary aerospace technology. SUMMARY
[0003] The utility model aims at providing a kind of hyperbolic elastic needle structure, the hyperbolic contact point assembly in the structure is in the form of hyperbolic jack, and the reliability of contact with inner plug pin is high, guarantee that the current is not instantaneous interruption in the process of elastic end contact under pressure and rebound, and contact resistance is stable.
[0004] The technical scheme adopted by the utility model is: a kind of hyperbolic elastic needle structure, the structure is composed of outer sleeve, hyperbolic contact point assembly, spring and inner plug pin. The hyperbolic contact point assembly includes contact, inner sleeve, front sleeve and spring wire;The spring wire is beryllium bronze wire, and 6 spring wires are uniformly distributed in the inner wall of inner sleeve along the circumferential direction, form a 10° angle with the inner sleeve in the axial direction and tightly adhere to the inner wall, and the two ends of spring wire are bent towards the outer wall of inner sleeve, and the spring wire in inner sleeve forms the generatrix of single-leaf rotary hyperboloid, which is called hyperbolic jack, and inner sleeve and spring wire are fixed to form the assembly by front sleeve and contact closing;The minimum envelope diameter of hyperboloid formed by spring wire is less than the diameter of inner plug pin insertion place, and after inner plug pin is inserted into hyperbolic jack, it is contacted with multiple spring wires at the same time, forming multiple electrical engagement parts. The contact assembly is axially positioned by the step of outer sleeve inner wall, the spring is pressed on the step of contact outer circle, the inner plug pin is inserted into the hyperbolic jack of contact assembly, so that the outer circle step of inner plug pin compresses the spring to the positioning step of outer sleeve inner wall, and the outer circle step of inner plug pin is chamfered for closing and fixing, and the end connection mode is cup welding, and the outer sleeve end face is closed to the inner plug pin to complete the structure.
[0005] The utility model has the beneficial effects that by using the hyperbolic elastic needle structure of the utility model, the hyperbolic contact point assembly is always stably engaged with inner plug pin in the movement process of elastic needle contact, effectively solves the problem of unstable contact of elastic contact piece, the structure has stable elasticity, low contact resistance and strong vibration impact resistance, and the use reliability of connector is improved. BRIEF DESCRIPTION OF DRAWINGS
[0006] Figure 1 It is the structure schematic diagram of the utility model
[0007] Figure 1. Hyperbolic contact assembly, 11. Contact, 12. Front sleeve, 13. Inner sleeve, 14. Spring wire, 2. Inner pin, 3. Outer sleeve, 4. Spring
[0008] Figure 2 Is the hyperbolic contact assembly structure half cut schematic view of the utility model DETAILED DESCRIPTION
[0009] Figure 1 In the inner sleeve (13) inner wall, 6 beryllium bronze spring wire (14) is distributed along the circumferential direction, with the inner sleeve (13) axial angle of 10 ° and close to the inner sleeve inner wall, spring wire (14) both ends bend to the inner sleeve outer wall, front sleeve (12) and contact (11) along the circumferential direction together close (15) in the inner sleeve (13) outer circular step groove, form hyperbolic insertion hole, complete hyperbolic contact assembly (1) assembly; Hyperbolic contact assembly (1) in the outer sleeve (3) inner wall step (33) axial positioning, spring is pressed in the contact step (16), inner pin (2) outer circular step compression spring to the outer sleeve inner wall step (32), inserted into the hyperbolic contact assembly (1) hyperbolic insertion hole, outer sleeve end face close (31) to the inner pin step chamfer complete the structure of the utility model assembly. Elastic butt joint connector insertion, rigid end contact piece press contact (11), hyperbolic contact assembly (1) compression spring (4) along the inner pin (2) axial movement, when the electrical connection is separated, hyperbolic contact assembly rebound under the action of spring force, using spring compression force instead of the engagement force between the traditional connector contact, realize the elastic contact function.
Claims
1. A double-curved elastic needle structure, characterized by The utility model is composed of a sleeve, a hyperbolic contact assembly, a spring and an inner pin, wherein the hyperbolic contact assembly comprises a contact, an inner sleeve, a front sleeve and a spring wire.
2. The double-curved elastic needle structure according to claim 1, characterized by: The inner wall of the sleeve is provided with two positioning steps to axially position the hyperbolic contact assembly and the inner pin; the outer wall is provided with a positioning step to limit the movement of the contact; the end face of the sleeve is fixed with the inner pin through a closed end.
3. The double-curved elastic needle structure according to claim 1, characterized in that: The hyperbolic contact assembly adopts six spring wires which are uniformly distributed on the inner wall of the inner sleeve in the circumferential direction, are at an angle of 10° with the inner sleeve in the axial direction and are tightly attached to the inner wall, and the two ends of the spring wires are bent towards the outer wall of the inner sleeve; the spring wires in the inner sleeve form a generatrix of a single-leaf rotary hyperboloid, and are fixed through the closed end of the front sleeve and the contact.
4. The hyperbolic elastic needle structure of claim 1, wherein: The outer circular step of the inner pin is provided with a chamfer for closed end fixing, and the termination mode is welding cup welding.