GLASS-WIPING DEVICE

• US 20150113752A1
• Filed: 01/16/2013
• Published: 04/30/2015
• Est. Priority Date: 04/05/2012
• Status: Active Grant

• Current Assignee: Ecovacs Robotics (Suzhou) Co. Ltd.
• Original Assignee: Ecovacs Robotics (Suzhou) Co. Ltd.
• Inventors: Lv, Xiaoming
• Granted Patent: US 10,172,504 B2
• Time in Patent Office: Days
• US Class Current: 15/250.001
• CPC Class Codes: A47L 1/02 Power-driven machines or devices
• CPC Class Codes: A47L 2201/04 Automatic control of the travelling movement; Automatic obstacle detection
• CPC Class Codes: B60S 1/0455 Device for lifting the wipers off the screen in its parking position or at extremes of wipe
• CPC Class Codes: H01H 3/16 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

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.

Claims

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),

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′

), and

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.

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 1, characterized in that,

the contact leg (1021, 1021′

) has an end-surface shape that is a semi-circular or arc shape or a trapezium shape having a guiding slope.

7. The glass-wiping device of claim 1, characterized in that,

the supporting body (103) and the shell on the edge of the machine body (1) are provided as an integral piece.

8. 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.

9. The glass-wiping device of claim 1, characterized in that,

the edge detection unit (100) is provided on an edge of the machine body.

10. 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.