Telescopic legs for furniture
By using the design of elongated outer tube, elongated inner tube and passively moving intermediate elements in the telescopic columns of height-adjustable furniture, the problems of limited height coverage of telescopic columns and high complexity of actuators in the prior art are solved, and a larger height adjustment range and stability are achieved, while reducing system costs.
CN114650750BActive Publication Date: 2025-03-28PERLHAUGLUND INNOVATIONS GMBH
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Patent Information
- Application Number
- CN202080077453.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-11-08
- Filing Date
- 2020-11-05
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2040-11-05
AI Technical Summary
Technical Problem
Existing telescopic columns of height-adjustable furniture have limited height coverage at maximum extension, resulting in stability problems and complex actuator design and high cost.
Method used
The telescopic column design is adopted that includes an elongated outer tube, an elongated inner tube and an intermediate element. The intermediate element passively moves through the inner tube, simplifying the control of the drive unit and reducing system complexity and cost.
Benefits of technology
A larger height adjustment range is achieved while maintaining stability and reducing system complexity and cost.
✦ Generated by Eureka AI based on patent content.
Abstract
A telescopic column (100) for a height-adjustable table (120), the telescopic column extending along a longitudinal axis from a first end (102) to a second end (103) of the telescopic column (100), the telescopic column comprising: an elongated outer tube (10) fixedly arranged at the second end (103) of the telescopic column (100); an elongated inner tube (20) having a top end (22) and a bottom end (23), wherein the top end (22) defines the first end (102) of the telescopic column (100), and wherein the elongated inner tube (20) is sized and adapted to move into and out of the outer tube (10), and can be driven by a drive unit (150) along the longitudinal axis between a maximum height (112) and a minimum height (111); and an intermediate element (30), the intermediate element having a lower portion (31), a middle portion (32) and an upper portion (33), the lower portion sized and adapted to be moved from its interior Engaging the outer tube (10), the intermediate portion is sized and adapted to fit into and engage the inner tube (20) from the interior thereof, the upper portion is sized and adapted to be retained within the inner tube (20) to provide stability, wherein the intermediate element (30) is passively moved by means of the inner tube (20) when the telescopic column (100) moves between the maximum height (112) and the minimum height (111); a motor (150) disposed substantially outside the telescopic column (100) for providing rotational movement to a worm (156) extending into the telescopic column (100) and driving a worm gear (66); a hollow bearing sleeve (60) drivably disposed from the interior thereof to the worm gear (66) and coupled to a lead screw (50) such that the lead screw (50) rotates about the longitudinal axis when the bearing sleeve (60) is driven by the motor (150).
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