Connection module and interference avoidance method

Patent metadata

Field	Value
Publication number	US-11360111-B2
Application number	US-201816636738-A
Country	US
Kind code	B2
Filing date	Aug 23, 2018
Priority date	Sep 1, 2017
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

Provided is a connection module with a high degree of freedom for an automatic analyzer which does not depend on a device as a discharge destination. For this purpose, a module to be connected to an automatic analyzer with a rack rotor mechanism includes: a rack discharge mechanism for moving a rack from the rack rotor mechanism to a rotation holder; a rack rotating mechanism for rotating the rack moved to the rotation holder; a conveyor mechanism for transporting the rack from the rack rotating mechanism to a discharge port; and a feeder mechanism for pushing the rack out of the rotation holder to the conveyor mechanism, in which the rack rotating mechanism rotates the rotation holder from a direction parallel to the rack discharge mechanism to a direction parallel to the feeder mechanism and the conveyor mechanism in the selected rotation direction.

First claim

The invention claimed is:

1. A connection module to be connected to an automatic analyzer with a rack rotor mechanism, comprising:
a rack discharge mechanism for moving a rack from the rack rotor mechanism to a rotation holder;
a rack rotating mechanism for rotating the rack moved to the rotation holder;
a conveyor mechanism for transporting the rack from the rack rotating mechanism to a discharge port; and
a feeder mechanism for pushing the rack out of the rotation holder to the conveyor mechanism, wherein
the rack rotating mechanism rotates the rotation holder in a selected rotation direction from a direction parallel to the rack discharge mechanism to a direction parallel to the feeder mechanism and the conveyor mechanism,
the rack discharge mechanism includes: a rail for supporting the rack under movement from the rack rotor mechanism to the rotation holder; a slider shaft; and a carriage, the carriage including: a slider to slide on the slider shaft; and a holding part located on the slider to hold the rack, and
a length of the rail is shorter than an overall length of the rack.

2. The connection module according to claim 1 , comprising:
a first rack detector, wherein
the rack has a contact part to come into contact with the holding part of the carriage, and when a face which faces the rack rotating mechanism when the rack is discharged from the rack rotor mechanism is defined as a front face of the rack, the front face and the contact part have a first distance,
when the rotation holder is made parallel to the rack discharge mechanism, the first rack detector and an outer circumference of the rack rotor mechanism have a second distance, and
the second distance is not more than the first distance.

3. The connection module according to claim 2 , comprising:
a second rack detector, wherein
when the rotation holder is made parallel to the rack discharge mechanism, the second rack detector is located in a remoter position from the rack rotor mechanism than a rotation axis of the rack rotating mechanism, and the second rack detector and the rotation axis have a third distance, and
the third distance is not more than the first distance.

4. The connection module according to claim 3 , wherein
either the first rack detector or the second rack detector depending on the selected rotation direction detects that the rack has been pushed out of the rotation holder to the conveyor mechanism.

5. The connection module according to claim 1 , comprising:
a rack detector located before the discharge port to detect the rack discharged from the conveyor mechanism.

6. The connection module according to claim 1 , wherein
a waiting position for the carriage is provided between the rack rotor mechanism and the rack rotating mechanism,
the connection module comprising:
a first carriage detector for detecting that the carriage is at a first stop position on a side of the rack rotor mechanism;
a second carriage detector for detecting that the carriage is at the waiting position;
a third carriage detector for detecting that the carriage is at a second stop position on a side of the rack rotating mechanism; and
a fourth carriage detector for detecting that the carriage is between the first stop position and an outer circumference of the rack rotor mechanism.

7. The connection module according to claim 6 , wherein
at the first stop position, the holding part of the carriage comes into contact with a contact part of the rack, and
the second stop position is on a rotation axis of the rack rotating mechanism.

8. The connection module according to claim 7 , wherein
the rotation holder has a notch, and
when the rotation holder becomes parallel to the feeder mechanism and the conveyor mechanism, the carriage can move from the second stop position through the notch to the waiting position.

9. An interference avoidance method for an automatic analyzer with a rack rotor mechanism and a connection module connected to the automatic analyzer, wherein
the automatic analyzer comprises a controller for controlling the rack rotor mechanism and the connection module,
the connection module comprises: a rack discharge mechanism for holding a rack from the rack rotor mechanism by a carriage and moving the rack to a rotation holder; and a rack rotating mechanism for rotating the rack moved to the rotation holder, and a distance between the rack rotor mechanism and the rack rotating mechanism is less than an overall length of the rack,
when the carriage is in a range of interference with the rack rotor mechanism, the controller moves the carriage to a first stop position on a side of the rack rotor mechanism, makes the rack rotating mechanism perform origin return operation, and then moves the carriage to a second stop position on a side of the rack rotating mechanism, and
if the carriage is out of the range of interference with the rack rotor mechanism but the rack is held by the carriage, the controller moves the carriage to the second stop position.

10. The interference avoidance method according to claim 9 , wherein
the connection module comprises: an interference detector for detecting that the carriage is in the range of interference with the rack rotor mechanism; and a rack detector for detecting that at least part of the rack has moved to the rotation holder, and
the controller checks a state of interference between the automatic analyzer and the connection module according to output of the interference detector and output of the rack detector.

11. An interference avoidance method for an automatic analyzer with a rack rotor mechanism and a connection module connected to the automatic analyzer, wherein
the automatic analyzer comprises a controller for controlling the rack rotor mechanism and the connection module,
the connection module comprises: a rack discharge mechanism for holding a rack from the rack rotor mechanism by a carriage and moving the rack to a rotation holder; and a rack rotating mechanism for rotating the rack moved to the rotation holder, and a distance between the rack rotor mechanism and the rack rotating mechanism is less than an overall length of the rack,
the controller checks a stop position of the carriage and when the carriage is neither at a first stop position on a side of the rack rotor mechanism nor at a second stop position on a side of the rack rotating mechanism, the controller turns OFF excitation of a motor for rotating the rack rotating mechanism,
when the carriage is in a range of interference with the rack rotor mechanism, the controller moves the carriage to a waiting position between the rack rotor mechanism and the rack rotating mechanism,
the controller checks whether a rack is held by the carriage or not, and
when the rack is held by the carriage, the controller moves the carriage to the second stop position and then turns ON the excitation of the motor for rotating the rack rotating mechanism.

12. The interference avoidance method according to claim 11 , wherein
the connection module comprises: a plurality of stop position detectors for detecting that the carriage is at the first stop position and at the second stop position, respectively; an interference detector for detecting that the carriage is in the range of interference with the rack rotor mechanism; and a rack detector for detecting that at least part of the rack has moved to the rotation holder, and
the controller checks a state of interference between the automatic analyzer and the connection module according to output of the plural stop position detectors, output of the interference detector, and output of the rack detector.

Assignees

• Hitachi High Tech Corp

Inventors

• FUKUSHI Yudai
• Mori Takamichi

Classifications

• G01N2035/0491

  Position sensing, encoding; closed-loop control · CPC title

• G01N35/025

  having a carousel or turntable for reaction cells or cuvettes · CPC title

• G01N2035/0415

  moving in two dimensions in a horizontal plane · CPC title

• G01N35/00584 Primary

  Control arrangements for automatic analysers · CPC title

• G01N35/04 Primary

  Details of the conveyor system {(G01N35/021 - G01N35/028 take precedence)} · CPC title