Coaxial connector assembly

Patent metadata

Field	Value
Publication number	US-10916902-B2
Application number	US-201916569097-A
Country	US
Kind code	B2
Filing date	Sep 12, 2019
Priority date	Sep 14, 2018
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

[SOLUTION] First to third coaxial connectors 10 to 30 are provided. A second center conductor 23 of the second coaxial connector 20 has a second shaft portion 23A held by a second dielectric body 22, a right columnar one-end-side contact portion 23B to be fitted in a first receiving portion 13B of the first coaxial connector 10, and the other-end-side contact portion 23C to be fitted in a third center contact portion 33B of the third coaxial connector 30. The one-end-side contact portion 23B is larger than the outer diameter of the second shaft portion 23A. A distance in a radial direction between the one-end-side contact portion 23B and a first fitting portion 11B of a first external conductor 13 is impedance-matched to an impedance between a first center conductor 13 and the periphery thereof and an impedance between the second shaft portion 23A of the second center conductor 23 and the periphery thereof. The first and second coaxial connectors 10, 20 and the second and third coaxial connectors 20, 30 form floating structures.

First claim

The invention claimed is:

1. A coaxial connector assembly including a first coaxial connector configured such that a first center conductor is held by a first external conductor through a first dielectric body, a second coaxial connector configured such that a second center conductor is held by a second external conductor through a second dielectric body, and a third coaxial connector configured such that a third center conductor is held by a third external conductor through a third dielectric body and configured such that the third coaxial connector is fitted in and connected to the first coaxial connector in a single axial direction through the second coaxial connector,
wherein the first center conductor is configured such that a first receiving portion configured to receive the second center conductor of the second coaxial connector is formed in a tubular hole shape extending straight in the axial direction, the first external conductor has a first holding portion configured to hold the first center conductor through the first dielectric body and a first fitting portion protruding toward the second coaxial connector with respect to the first dielectric body and the first center conductor in the axial direction and fitted onto one end portion of the second external conductor of the second coaxial connector, and the first fitting portion is formed with a smaller inner diameter than an inner diameter of the first holding portion,
the second center conductor of the second coaxial connector has a second shaft portion held by the second dielectric body in the second external conductor, a columnar one-end-side contact portion protruding toward the first coaxial connector with respect to the second dielectric body and the second external conductor in the axial direction and provided at one end portion of the second center conductor on a first coaxial connector side to fit in the first receiving portion of the first coaxial connector, and the other-end-side contact portion formed at the other end portion of the second center conductor on a third coaxial connector side to fit in a third center contact portion provided at one end portion of the third center conductor of the third coaxial connector,
the second center conductor is configured such that an outer diameter of the one-end-side contact portion is formed larger than an outer diameter of the second shaft portion and a distance in a radial direction between the one-end-side contact portion and the first fitting portion of the first external conductor is designed such that an impedance between the first center conductor and a periphery of the first center conductor including an air layer and an impedance between the second shaft portion of the second center conductor and a periphery of the second center conductor including an air layer are impedance-matched,
the third coaxial connector is configured such that the third external conductor is fitted onto the other end portion of the second external conductor,
the first and second coaxial connectors and the second and third coaxial connectors form floating structures relatively movable in the axial direction and the radial direction, and
the third external conductor of the third coaxial connector forms, in cooperation with the second external conductor of the second coaxial connector, a lock mechanism configured to prevent detachment.

2. The coaxial connector assembly according to claim 1 , wherein
each contact area between the first receiving portion at the first center conductor of the first coaxial connector and the one-end-side contact portion of the second center conductor of the second coaxial connector, between the first fitting portion at the first external conductor of the first coaxial connector and one end portion of the second external conductor of the second coaxial connector, between the other-end-side contact portion of the second center conductor of the second coaxial connector and the third center conductor of the third coaxial connector, and between the other end portion of the second external conductor of the second coaxial connector and the third external conductor of the third coaxial connector has the floating structure allowing inclination about the each contact area as a point of support and formed in a local area in the axial direction.

3. The coaxial connector assembly according to claim 2 , wherein
one of two members forming each contact area has a slitting groove extending in the axial direction at at least a single spot in a circumferential direction.

4. The coaxial connector assembly according to claim 1 , wherein
the first coaxial connector is configured such that the first center conductor has a first center connection portion to be soldered and connected to a circuit board and the first external conductor has a first external connection portion to be soldered and connected to the circuit board.

5. The coaxial connector assembly according to claim 1 , wherein
the third coaxial connector is configured such that the third center conductor has a third center connection portion to be soldered and connected to another circuit board and the third external conductor has a third external connection portion to be soldered and connected to the other circuit board.

6. The coaxial connector assembly according to claim 1 , wherein
the other-end-side contact portion of the second center conductor is formed in a tubular shape extending straight in the axial direction, and is configured to receive the third center contact portion of the third coaxial connector, and
the third center contact portion is formed in a columnar shape.

7. The coaxial connector assembly according to claim 1 , wherein
an upper end of the one-end-side contact portion is in a substantially hemispherical shape.

8. A coaxial connector assembly including a first coaxial connector configured such that a first center conductor is held by a first external conductor through a first dielectric body, a second coaxial connector configured such that a second center conductor is held by a second external conductor through a second dielectric body, and a third coaxial connector configured such that a third center conductor is held by a third external conductor through a third dielectric body and configured such that the third coaxial connector is fitted in and connected to the first coaxial connector in a single axial direction through the second coaxial connector,
wherein the first center conductor is configured such that a first receiving portion configured to receive the second center conductor of the second coaxial connector is formed in a tubular hole shape extending straight in the axial direction, the first external conductor has a first holding portion configured to hold the first center conductor through the first dielectric body and a first fitting portion protruding toward the second coaxial connector with respect to the first dielectric body and the first center conductor in the axial direction and fitted onto one end portion of the second external conductor of the second coaxial connector, and the first fitting portion is formed with a smaller inner diameter than an inner diameter of the first holding portion,
the second center conductor of the second coaxial connector has a second shaft portion held by the second dielectric body in the second external conductor, a columnar one-end-side contact portion protruding toward the first coaxial connector with respect to the second dielectric body and the second external conductor in the axial direction and provided at one end portion of the second center conductor on a first coaxial connector side to fit in the first receiving portion of the first coaxial connector,
the second center conductor is configured such that an outer dia

Assignees

• Hirose Electric Co Ltd

Inventors

• Maki Kentaro

Classifications

• H01R24/44 Primary

  comprising impedance matching means · CPC title

• H01R13/6473

  Impedance matching · CPC title

• H01R13/639

  Additional means for holding or locking coupling parts together, after engagement, {e.g. separate keylock, retainer strap} · CPC title

• H01R4/029

  Welded connections (H01R4/021 - H01R4/028 take precedence) · CPC title

• H01R13/627

  Snap or like fastening · CPC title