Cable connection structure and endoscope device

Patent metadata

Field	Value
Publication number	US-10312566-B2
Application number	US-201615255504-A
Country	US
Kind code	B2
Filing date	Sep 2, 2016
Priority date	Mar 20, 2014
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A cable connection structure includes a substrate and a coaxial cable connected to the substrate. The coaxial cable has: a conductor; an inner insulator that coats an outer periphery of the conductor; a shield that coats an outer periphery of the inner insulator; and an outer insulator that coats an outer periphery of the shield. The substrate has: a plate-shaped insulating base material; a conductor connection electrode to which the conductor is connected; and a shield connection electrode to which the shield is connected. A ground is provided on a back surface of the base material opposite to where the conductor connection electrode is formed. The shield connection electrode is an exposed portion of the ground. At a connection part of the substrate to which the coaxial cable is connected, the shield connection electrode, the base material, and the conductor connection electrode are bared in a stepwise fashion.

First claim

What is claimed is:

1. A cable connection structure comprising:
a substrate; and
a coaxial cable connected to the substrate, the coaxial cable having: a center conductor made of a conductive material; an inner insulator that coats an outer periphery of the center conductor; a shield that coats an outer periphery of the inner insulator; and an outer insulator that coats an outer periphery of the shield, wherein
the substrate has a first substrate and a second substrate,
the first substrate has a first base material made of an insulator and a center conductor connection electrode to which the center conductor is connected such that the center conductor connection electrode is formed in the first base material so as to be flush with the first base material,
the second substrate has a second base material made of an insulator and a shield connection electrode to which the shield is connected such that the shield connection electrode is formed in the second base material so as to be flush with the second base material,
the first and second substrates are stacked such that the shield connection electrode and the center conductor connection electrode are bared from an end portion of the substrate toward a connection surface of the substrate,
an end portion of the coaxial cable is processed such that the center conductor, the inner insulator, and the shield are exposed in a stepwise fashion from a distal end portion of the coaxial cable, and
the processed end portion of the coaxial cable is arranged on a connection part of the substrate so that the shield and the center conductor are respectively connected to the shield connection electrode and the center conductor connection electrode bared from the end portion of the substrate toward the connection surface of the substrate.

2. The cable connection structure according to claim 1 , wherein
an exposed part of the inner insulator of the coaxial cable is arranged above the second substrate such that the outer periphery of the inner insulator does not come into contact with the second base material.

3. An endoscope device comprising at least one of an ultrasound probe and an imaging device, the ultrasound probe being configured to obtain information by means of ultrasound, the imaging device being configured to obtain image information, wherein
at least one of the ultrasound probe and the imaging device has the cable connection structure according to claim 1 .

4. A cable connection structure comprising:
a first substrate formed of an insulator, the first substrate having a first surface, the first surface having a first center conductor connection electrode;
a second substrate formed of an insulator, the second substrate having a second surface, the second surface having a second center conductor connection electrode;
a ground sandwiched between the first substrate and the second substrate such that the ground is exposed from the first surface to form a first shield connection electrode and the ground is exposed from the second surface to form a second shield connection electrode;
a first coaxial cable connected to the first surface of the first substrate, the first coaxial cable having a first center conductor made of a conductive material, a first inner insulator covering an outer periphery of the first center conductor, a first shield that covers an outer periphery of the inner insulator, and a first outer insulator that covers an outer periphery of the first shield, the first center conductor being electrically connected to the first center conductor connection electrode and the first shield being electrically connected to the first shield connection electrode; and
a second coaxial cable connected to the second surface of the second substrate, the second coaxial cable having a second center conductor made of a conductive material, a second inner insulator covering an outer periphery of the second center conductor, a second shield that covers an outer periphery of the inner insulator, and a second outer insulator that covers an outer periphery of the second shield, the second center conductor being electrically connected to the second center conductor connection electrode and the second shield being electrically connected to the second shield connection electrode.

5. The cable connection structure according to claim 4 , wherein the first and second shield connection electrodes are formed on an edge of the first and second substrates, respectively.

6. The cable connection structure according to claim 4 , wherein at least one of the first and second shield connection electrodes are exposed through a cutout formed in the respective first and second substrates.

7. The cable connection structure according to claim 4 , wherein:
the first center conductor connection electrode and the first shield connection electrode are formed along a first longitudinal axis,
the second center conductor connection electrode and the second shield connection electrode are formed along a second longitudinal axis; and
the first longitudinal axis and the second longitudinal axis are parallel and offset in a direction perpendicular to the first and second longitudinal axes.

8. The cable connection structure according to claim 4 , wherein the first center conductor connection electrode is further from the edge of the first substrate than the second center conductor connection electrode is from the edge of the second substrate.

9. The cable connection structure according to claim 4 , wherein a length in a width direction of each of the first and second shield connection electrodes extending to an end portion of a respective one of the first and second substrates is shorter than a length in a width direction of the first and second substrates.

10. The cable connection structure according to claim 4 , wherein
exposed portions of the ground forming the first and second shield connection electrodes expose only a part of the ground that is connected to a respective one of the first and second shields, and
a part of the ground that is not connected to the first and second shields is coated with the first and second substrates, respectively.

11. The cable connection structure according to claim 4 , wherein the first center conductor connection electrode and the second center conductor connection electrode are arranged such that center positions of the first and second center conductor connection electrodes do not overlap in a width direction of the first and second substrates.

12. An endoscope device comprising at least one of an ultrasound probe and an imaging device, the ultrasound probe being configured to obtain information by means of ultrasound, the imaging device being configured to obtain image information, wherein
at least one of the ultrasound probe and the imaging device has the cable connection structure according to claim 4 .

Assignees

• Olympus Corp

Inventors

• Yamada Junya

Classifications

• H01R12/592

  connections to contact elements · CPC title

• H05K3/3405

  Edge mounted components, e.g. terminals · CPC title

• H05K2201/0919

  Exposing inner circuit layers or metal planes at the side edge of the printed circuit board [PCB] or at the walls of large holes · CPC title

• H01R12/62

  connecting to rigid printed circuits or like structures · CPC title

• H05K2201/10356

  Cables · CPC title