Glass-wiping device

Patent metadata

Field	Value
Publication number	US-10172504-B2
Application number	US-201314390617-A
Country	US
Kind code	B2
Filing date	Jan 16, 2013
Priority date	Apr 5, 2012
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A glass-wiping device comprises a machine body (1) and a control unit. The machine body (1) is provided with an edge detection unit (100), the edge detection unit (100) comprises a sensor switch (101, 101′) and an action element (102). The action element (102) is provided at a lower end thereof with a contact leg (1021, 1021′) that presses against the surface of a glass (200). When the contact leg (1021, 1021′) leaves the surface of the glass (200), the action element (102) correspondingly generates a displacement and triggers the sensor switch (101, 101′); the sensor switch (101, 101′) transmits a switch signal to the control unit; the control unit controls, on the basis of the switch signal, the glass-wiping device to cease running or to change the running direction. The glass-wiping device has a simple structure, reduced costs, high sensitivity and great controllability, and effectively implements the detection of the edge of a plate glass.

First claim

The invention claimed is:

1. A glass-wiping device comprising a machine body ( 1 ) and a control unit, characterized in that,
the machine body ( 1 ) is provided with an edge detection unit ( 100 ) comprising a sensor switch ( 101 , 101 ′) and an action element ( 102 ), a contact leg ( 1021 , 1021 ′) is provided at a lower end of the action element ( 102 ) and presses against a surface of a glass ( 200 ), wherein the external shape of the machine body ( 1 ) is a square shape and the edge detection unit ( 100 ) is provided on a vertex angle of the machine body;
when the contact leg ( 1021 , 1021 ′) leaves a surface of the glass ( 200 ), the action element ( 102 ) correspondingly generates a displacement and triggers the sensor switch ( 101 , 101 ′),
the sensor switch ( 101 , 101 ′) transmits a switch signal to the control unit, and based on the switch signal, the control unit controls the glass-wiping device to cease running or to change the running direction; and
the contact leg ( 1021 , 1021 ′) has an end-surface shape that is a semi-circular or arc shape, and slides on the surface of the glass when the contact leg ( 1021 , 1021 ′) presses against the glass.

2. The glass-wiping device of claim 1 , characterized in that,
the sensor switch ( 101 ) is a travel switch, the action element ( 102 ) is a connecting rod;
or, the sensor switch ( 101 ′) is a Hall sensor, and the action element ( 102 ) comprises a magnetic element ( 300 ) correspondingly provided thereon; and
or, the sensor switch ( 101 ′) is a magnetron, and the action element ( 102 ) comprises a magnetic element ( 300 ) correspondingly provided thereon.

3. The glass-wiping device of claim 2 , characterized in that,
the edge detection unit ( 100 ) further comprises a supporting body ( 103 ) in which a step through-hole ( 1031 ) is provided,
the action element ( 102 ) is provided through the step through-hole ( 1031 ), and has a length greater than the height of the supporting body ( 103 ),
an upper part of the action element ( 102 ) is limited on an external end surface of the supporting body ( 103 ) by a position-limiting part ( 1022 ), and
a spring ( 104 ) is fitted around the action element ( 102 ), and is pressed against between the step through hole ( 1031 ) and the contact leg ( 1021 , 1021 ′).

4. The glass-wiping device of claim 3 , characterized in that,
the travel switch is provided within a shell of the glass-wiping device;
or, the Hall sensor is provided on the supporting body ( 103 ); and
or, the magnetron is provided on the supporting body ( 103 ).

5. The glass-wiping device of claim 3 , characterized in that,
the position-limiting part ( 1022 ) is a buckle fixed on the connecting rod.

6. The glass-wiping device of claim 3 , characterized in that,
the supporting body ( 103 ) and the shell on the edge of the machine body ( 1 ) are provided as an integral piece.

7. The glass-wiping device of claim 1 , characterized in that,
the machine body ( 1 ) has an external shape that is a circular, square, rectangle, oval or irregular shape.

8. The glass-wiping device of claim 1 , characterized in that,
the edge detection unit ( 100 ) is provided on an edge of the machine body.

9. The glass-wiping device of claim 1 , characterized in that,
a plurality of the edge detection units ( 100 ) are provided, the sensor switch ( 101 , 101 ′) in each of the edge detection units ( 100 ) is connected to the control unit.

Assignees

• Ecovacs Robotics Co Ltd

Inventors

• Lv Xiaoming

Classifications

• B60S1/0455

  Device for lifting the wipers off the screen in its parking position or at extremes of wipe · CPC title

• A47L1/02 Primary

  Power-driven machines or devices · CPC title

• H01H3/16

  adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift · CPC title

• A47L2201/04

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