新型一件式弹性板对板连接器
By designing a one-piece flexible board-to-board connector, the problems of large space occupation, many parts, and high cost of three-piece connectors are solved, achieving more efficient signal transmission and a simplified structure, and enhancing assembly efficiency and axial tolerance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU RECODEAL INTERCONNECT SYST
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing three-piece board-to-board connectors occupy a large space, have many parts, are expensive, and have poor signal transmission capabilities.
A one-piece flexible board-to-board connector was designed, including a fixed base, a floating base, a variable diameter spring, and an insulator. The outer conductor and inner conductor of the flexible floating structure are fixedly connected into one piece by the insulator to realize signal transmission.
It reduces the number of parts and space occupied, improves signal transmission capability and assembly efficiency, reduces costs, and increases axial tolerance within the existing dimensions.
Smart Images
Figure CN224520221U_ABST
Abstract
Claims
1. A new one-piece elastic plate-to-plate connector characterized in that, Includes: a fixed seat (1), a floating seat (2), a variable diameter spring (3), an insulator (4), and an inner conductor (01); The fixing base (1) includes a first tube (11) and a lower end plate (12) that is vertically connected to the bottom of the outer wall of the first tube (11). The lower end of the first tube (11) is fixed and electrically connected to the first PCB board (02). The floating seat (2) includes a second tube (21) and an upper end plate (22) vertically connected to the top of the outer wall of the second tube (21). The lower surface edge of the upper end plate (22) is vertically connected to a positioning end ring (23). The second tube (21) is slidably connected to the inside of the first tube (11). The small diameter end of the variable diameter spring (3) is attached to the inside of the positioning end ring (23) and the upper surface is attached to the upper end plate (22). The large diameter end of the variable diameter spring (3) is sleeved outside the first tube body (11) and the lower surface is attached to the lower end plate (12), so that the fixed seat (1) and the floating seat (2) constitute a vertically floating outer conductor. The lower end of the insulator (4) is fixed inside the first tube (11) and the upper end is gapped through the second tube (21). The lower end of the inner conductor (01) is fixedly sleeved in the central shaft hole (40) of the insulator (4). The lower end of the inner conductor (01) is in contact with the first PCB board (02). The inner conductor (01) includes a floating terminal (5) that can move up and down elastically. The upper end of the floating terminal (5) extends out of the second tube (21). During assembly, the upper second PCB board (03) presses down to touch the floating terminal (5) and the upper plate (22) to make the signals of the second PCB board (03) and the first PCB board (02) conduct.
2. The novel one-piece elastomeric board-to-board connector of claim 1, wherein, The outer diameter of the small diameter end and the inner diameter of the positioning end ring (23) are matched with each other, and the outer diameter of the large diameter end and the diameter of the first tube body (11) are matched with each other with a clearance. The positioning end ring (23) can accommodate the small diameter end. Alternatively, the small diameter end may be the upper first coil of the variable diameter spring (3), and the other coils may be the large diameter end, with the height of the positioning end coil (23) being the height of the first coil.
3. The novel one-piece flexible plate-to-plate connector according to claim 2, characterized in that, The inner wall of the positioning end ring (23) is an inclined guide surface, and the small diameter end is in contact with the inclined guide surface; The outer wall of the upper end of the first tube (11) is thinned to form a smaller diameter clearance section (110). Both ends of the clearance section (110) are respectively formed with softened chamfers (111). The connecting section between the large diameter end and the small diameter end surrounds the clearance section (110).
4. The novel one-piece elastomeric board-to-board connector of claim 1, wherein, The lower end plate (12) forms a circular lower groove, and the bottom end of the large diameter end is fitted in the lower groove. The upper end plate (22) forms a circular upper groove, and the upper end of the small diameter end is fitted in the upper groove.
5. The novel one-piece elastomeric board-to-board connector of claim 1, wherein, The inner conductor (01) includes a buffer spring (6), a lower housing (7) which is also a conductor, and a floating terminal (5). The lower housing (7) is fixedly connected to the central shaft hole (40). The buffer spring (6) is sleeved in the mounting cavity (70) of the lower housing (7). The lower end of the floating terminal (5) is slidably connected to the mounting cavity (70) and its lower surface is attached to the upper end of the buffer spring (6).
6. The novel one-piece flexible board-to-board connector according to claim 5, characterized in that, The insulator (4) is made of a plastic material with a certain degree of toughness; The lower housing (7) has a chamfered outer reinforcing platform (71) on its outer wall. The outer reinforcing platform (71) is inserted into the central shaft hole (40) by interference fit, so that the fixed seat (1) and the lower housing (7) are tightly connected. The inner wall of the first tube (11) is provided with a chamfered inner reinforcing platform (113). The inner reinforcing platform (113) is inserted into the outer wall of the lower shoulder (41) with an interference fit, so that the insulator (4) and the first tube (11) are tightly connected.
7. The novel one-piece elastomeric board-to-board connector of claim 6, wherein, The lower edge of the second tube (21) is provided with a flange structure lower mounting platform (210), and the second tube (21) is provided with a number of axial notches (211) arranged in a circumferential array. The axial notches (211) penetrate the second tube (21) and the lower mounting platform (210) to form a number of elastic teeth (212). The first tube body (11) has a limiting end ring (114) at its upper end, and the lower hanging platform (210) is located below the limiting end ring (114) and is slidably connected to the first tube body (11) with the same diameter.
8. The novel one-piece elastomeric board-to-board connector of claim 7, wherein, There are 6 axial notches (211), and the width of each axial notch (211) is 0.2 mm.
9. The novel one-piece elastomeric board-to-board connector of claim 1, wherein, The fixed base (1) and the floating base (2) are made of beryllium copper, and the floating terminal (5) of the inner conductor (01) and the lower housing (7) are made of copper alloy. The lower end of the fixing seat (1) and the first PCB board (02) at the lower end are fixedly connected by reflow soldering; the lower end of the fixing seat (1) is also provided with a number of radial exhaust grooves (13) in a circumferential array to exhaust gas during soldering.
10. The novel one-piece elastomeric board-to-board connector according to any one of claims 1 to 9, characterized in that, Several connectors (00) can be connected in a rectangular dense array between the second PCB board (03) and the first PCB board (02).