8 Core Parts of Adjustable Standing Desk Frame

The production process of standing desk leg is more complicated. We will explore the functions of core components and what needs to note.

1. Motors

2. Lifting Column

3. Screw rod

4. Control System

5. Hall Sensor

6. Frame

7. Power Supply

8. Accessories

Let’s dive right in.

1. Motors of standing desk frame.

The motor industry has developed for many years, the technology has been very mature. Permanent magnet motor is widely used in intelligent furniture. In the manufacture of electric adjustable desk legs, 99% of the finished legs are brushed motors. The remaining 1% used brushless motors based on customer and market needs.

According to the type of power supply: can divide into DC motor and AC motor. In practice, direct current is the standard in homes around the world.

Brushless motor has obvious disadvantages:

The service lifetime is shorter than brushed motor

Have noise

So why do brushless motor account for 99% of the electric adjustable desk frame market?

• Lower failure rate.

Brushless motors are simple in structure and have a mature industrial chain and production methods;

• Fast response speed, large starting torque.

This means it can rise and fall faster, and starting-braking more quickly;

• Smooth operation;
• High control accuracy;
• Easier maintenance;
• High cost performance and lower cost.

More motor that you may want to know, please go to this article:?8 Things You Need To Know About Electric Desk Frame Motor

Electric adjustable desk leg is much more expensive than ordinary metal legs. After market research and production, major manufacturers weigh the difficulty of production, product quality, cost, DC brushed motor is the best choice.

2. Lifting column (Linear actuator) of adjustable desk frame.

Linear actuators are the core components used in all applications that require smooth linear motion, include the standing desk frame.

The linear actuator is composed of motor, reduction gear, screw, nut, guide sleeve, push rod, sliding seat, spring shell and the control switch. In addition to large industrial equipment, linear actuators also have many applications in medical and furniture fields.

Working principle:

Motor is decelerated by the gear, a pair of screw nuts are driven to turn the motor’s rotating motion into a straight line, complete the push rod action via the motor’s positive and negative rotation.

In electric adjustable desk frame, what are the advantages of electric linear actuators?

• Eco-friendly

Electric linear actuator requires very low energy consumption, energy saving and emission reduction.

• Stable

The lifting speed is always consistent.

• Programmable and easy to control

Through the control system programming, can accurately control the electric linear actuator up, down, start, stop and other behaviors.

• Maintenance-free

Almost no maintenance, lubricating oil has played a very good role in his protection.

• Stroke and speed

In the electric adjustable desk legs, common linear actuator stroke is 100 mm, 200 mm, 300 mm, 400 mm, 500 mm, 600 mm, 650 mm. The lifting speed is 4mm~35mm. Single motor and dual motor standing desk leg lifting speed is 18-20 mm/s and 30-35 mm/s.

3. The screw of standing desk leg.

Linear actuators also have a lot of classification:

Ball screw

Trapezoidal screw

In the adjustable table leg, the most used is dc trapezoidal screw actuator.

High quality trapezoidal screw has the following advantages:

Precision positioning

Linear actuator can be programmed through the programming and debugging of the control system, can control the adjustable table leg rise and fall and start and stop.

Trapezoidal screw has greater resistance and friction, sensitive start-stop reaction, more accurate positioning. It won’t happen that adjusting the tabletop to 90cm but run to 95cm.

Large loading

The trapezoidal screw has greater bearing capacity. The load on the adjustable leg can be increased by changing the density of the thread. However, more density will cut down the lifting speed, so manufacturers make trade-offs based on what the market wants.

Strong self-locking force

Here is no self-locking in ball screw, due to its smooth surface and less resistance. The trapezoidal screw has high self-locking force according to the different angle, size, density and roughness of the thread.

When the adjustable desk is firmly set at a height, the high self-locking force will allow the tabletop to withstand heavy load without slipping.

The quality of screw largely determines the electric adjustable leg lifting system is good or bad.

4. Control system of standing desk frame.

Reading here, we’ve knew the power core that makes the electric standing desk frame, so how we control it to lifting?

The control panel (also call it handset, remote), control box and all components constitute a complete control system, connected with the linear actuator, so as to achieve the controller.

Encoder

Through the pulse number accurate feedback motor spindle rotation number, so as to accurately calculate the electric push rod stroke change, to achieve accurate control.

Potentiometer

Feedback the size of the motor resistance, so as to reflect the stroke position of the push rod, and finally achieve the purpose of controlling the push rod at any position in the middle of the stroke stop.

Hall sensor

Hall sensor is installed on motor shaft, and the motor rotation number can be accurately fed back through hall principle, to compete accurate control of the push rod.

What is a hand-controlled integrated system?

At present, some electric adjustable frame in the market integrate the whole control system into the hand controller.

It abandons the big black control box and has a more beautiful appearance. But equal to abandon part of the important components (such as gyroscope), thus losing some functions. Even the lifting speed and stability are not as good as the control box.

5. Hall Sensor.

Hall element is a kind of semiconductor magnetoelectric device, which uses hall effect to work. It can be used to detect magnetic fields and their changes.

Hall sensor have many advantages, their structure is firm, small size, light weight, long life, easy installation, low power consumption, high frequency (up to 1MHZ), vibration resistance, not afraid of dust, oil, water vapor and salt spray pollution or corrosion.

Principle: Hall effect

Hall effect refers to the physical phenomenon of transverse potential difference when the magnetic field acts on the carriers in the current-carrying gold conductor semiconductor.

If a magnetic field is applied perpendicular to the current as it passes through the foil, a transverse potential difference will appear on the foil’s two sides.

Because there is a magnetic field around the conducting wire, its size is proportional to the current in the conducting wire, so we can use the Hall element to measure the magnetic field, we can determine the size of the wire current using this principle can be designed into the Hall current sensor.

In short, hall sensors can quickly and exactly feedback motor rotation, so as to achieve accurate control of the sranding desk frame.

6. Adjustable standing desk frame.

As ergonomic desks, electric adjustable desks have been developed over the years. The manufacturer has designed the frame – it can slide. It can adjust the width to fit different sizes of the tabletop. The most popular dual motor adjustable desk frame has an adjustable range of 500mm to 700mm.

7. Power supply.

Usually, each supplier will provide US, EU, standard, British standard, Australian standard plug.

The power supply also has an impact on the quality of the electric standing desk frame. A high-quality power supply can provide more power to the motor, thus increasing the speed and stability of whole desk.

8. Accessories.

• Fasteners: screws and nuts (installation required)
• Noise insulation gasket
• It can reduce the friction noise when the table leg lifting
• Dustproof buckle
• Prevent dust from falling into the gap between the leg segments, eliminate the failure caused by ash accumulation, prolong the service life.

Different production technology, will affect the quality of electric adjustable standing desk frame.

Hope this article is valuable for your purchase?standing desk frame.

What is the next article?

You get what you give.

Different suppliers have different prices. When you get ultra-high price and ultra-low price, waht is the beter choice?

In the next article, will analyze the value of different quality standing desk frame, and whether is worth your order from the following points:

Frame craft: (huge difference)

- Can't adjust width

- Single connecting rod

Material

Specification

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