Robot Head and Display Tilting Mechanism
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Solution Overview
Problem
Conventional robots used in daily life applications have a limitation where only the head display can be rotated or tilted, while the body display remains fixed, lacking the ability to simultaneously tilt both the head and body units.
Innovation Solution
A robot design that incorporates a contact bar connected to a head unit and a link connected to a display unit, which are both tilted by an ascending and descending plate driven by a single motor, allowing simultaneous tilting of the head and display units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single motor is used to tilt both the head unit and display unit, then the device complexity and cost are reduced, but the control precision and independence of each unit are compromised
Solution Approach 1:
The patent divides the tilting mechanism into two independent parts: a head tilting mechanism with contact bar and first link, and a display tilting mechanism with second link. Each link connects to different components (head unit and display unit respectively) but shares the common ascending and descending plate driven by a single motor. This segmentation allows independent tilting control of each unit while using shared actuation.
Solution Approach 2:
The ascending and descending plate serves as a universal component that simultaneously drives both the head tilting mechanism and display tilting mechanism. The single motor's motion is transmitted through this plate to both mechanisms, allowing one actuator to perform multiple functions of tilting both units independently through the segmented linkages.
2Ease of operation
If the head unit and display unit are tilted simultaneously by a single motor, then the ease of operation is improved, but the manufacturing precision and structural complexity increase
Solution Approach 1:
The patent introduces intermediary components (contact bar, first link, second link, and ascending and descending plate) that mediate between the single motor and the two tilting units. These intermediaries translate the motor's single degree of freedom motion into independent tilting motions for both the head unit and display unit, managing the complexity of simultaneous control.
3Adaptability or versatility
If the contact bar is designed to increase in height and bend, then the tilting range and flexibility are improved, but the manufacturing precision and structural complexity increase
Solution Approach 1:
The contact bar is designed with a bent shape that increases in height in the forward direction, allowing it to dynamically adapt to different tilting positions. This dynamic geometry enables the head unit to achieve a wider tilting range while maintaining smooth motion transmission through the ascending and descending plate mechanism.
Data Source
AI summary
A robot according to the present disclosure may include: a casing that has an internal space; a head unit that protrudes upward from the casing and has a first display; a display unit that is disposed ahead of the casing and has a second display; an ascending and descending motor that is disposed in the casing; an ascending and descending plate that ascends and descends between a first position and a second position higher than the first position by power of the ascending and descending motor; a contact bar that has an upper end connected to the head unit and a lower end being in contact with the ascending and descending plate; a fixing plate that is positioned between the ascending and descending plate and the head unit and has an opening through which the contact bar passes; and a link that connects the ascending and descending plate and the fixing plate to the display unit.