Detection device and robot dust collector

Patent metadata

Field	Value
Publication number	US-2025248575-A1
Application number	US-202519011713-A
Country	US
Kind code	A1
Filing date	Jan 7, 2025
Priority date	Feb 6, 2024
Publication date	Aug 7, 2025
Grant date	—

Abstract

A detection device provided in a robot dust collector includes: an optical sensor configured to detect an object around the robot dust collector; a cover member arranged at least partially around the optical sensor and configured to move linearly; a detection member configured to move linearly in conjunction with the cover member; and a motion sensor configured to detect movement of the detection member.

First claim

What is claimed is:

1 . A detection device provided in a robot dust collector, the detection device comprising:
an optical sensor configured to detect an object around the robot dust collector; a cover member arranged at least partially around the optical sensor and configured to move linearly; a detection member configured to move linearly in conjunction with the cover member; and a motion sensor configured to detect movement of the detection member.

2 . The detection device according to claim 1 , wherein
the detection member moves linearly rearward.

3 . The detection device according to claim 1 , further comprising:
a holder member configured to support the cover member such that the cover member is movable linearly, at least a portion of the holder member being arranged downward of the optical sensor.

4 . The detection device according to claim 3 , wherein
the motion sensor is held by the holder member.

5 . The detection device according to claim 4 , wherein
the holder member includes a sensor-holding portion configured to hold the motion sensor, and the sensor-holding portion is provided on an underside of the holder member.

6 . The detection device according to claim 5 , wherein
the motion sensor is a non-contact sensor that emits detection light, and the detection member moves linearly rearward to enter an optical path of the detection light.

7 . The detection device according to claim 3 , wherein
the cover member moves linearly in a horizontal direction upon coming into contact with an object, and the detection member moves linearly rearward in conjunction with the cover member.

8 . The detection device according to claim 7 , wherein
the cover member includes at least one first support portion, the holder member includes a guide opening into which the first support portion is inserted and which has a diameter larger than an outer diameter of the first support portion, and the guide opening guides the first support portion such that the cover member moves linearly in the horizontal direction.

9 . The detection device according to claim 8 , wherein
the detection member includes an elongated hole into which the first support portion is inserted and which is elongated in a left-right direction.

10 . The detection device according to claim 8 , further comprising:
a housing fixed to the holder member, at least a portion of the housing being arranged upward of the holder member, wherein the housing includes at least one second support portion, the cover member has a slider opening into which the second support portion is inserted and which has a diameter larger than an outer diameter of the second support portion, and the slider opening is guided by the second support portion such that the cover member moves linearly in the horizontal direction.

11 . The detection device according to claim 10 , wherein
the first support portion has a columnar shape, and the guide opening includes a guide apex portion and a pair of guide straight portions extending rearward from the guide apex portion.

12 . The detection device according to claim 11 , wherein
the second support portion has a columnar shape, and the slider opening has a slider apex portion and a pair of slider straight portions extending forward from the slider apex portion.

13 . The detection device according to claim 12 , wherein
one or more first support portions and two or more second support portions are provided in a left-right direction, or two or more first support portions and one or more second support portion are provided in the lest-right direction.

14 . The detection device according to claim 7 , wherein
the cover member moves linearly in an inclined direction directed rearward and downward upon contact with an object, and the detection member moves linearly rearward in conjunction with the cover member.

15 . The detection device according to claim 14 , wherein
the cover member includes a slider portion, the holder member includes at least one guide portion, and the guide portion guides the slider portion such that the cover member moves linearly in the inclined direction.

16 . The detection device according to claim 15 , wherein
a plurality of the guide portions is provided around the optical sensor.

17 . The detection device according to claim 10 , further comprising:
a horizontal biasing member held by the housing and configured to bias the cover member forward.

18 . The detection device according to claim 14 , further comprising:
a vertical biasing member held by the holder member and configured to bias the cover member upward.

19 . A robot dust collector comprising:
a main body; and the detection device according to claim 1 , wherein at least a portion of the optical sensor is arranged upward of a top surface of the main body, and the motion sensor is arranged in an internal space of the main body.

Assignees

• Makita Corp

Inventors

• Tsuno Takaya
• Koura Kentaro
• Sumiyoshi Hirotaka

Classifications

• A47L9/009

  Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles · CPC title

• A47L2201/04

  Automatic control of the travelling movement; Automatic obstacle detection · CPC title

• A47L9/2805 Primary

  Parameters or conditions being sensed · CPC title