Home > Blog > Corporate news > Constant Torque Spring Motor

Constant Torque Spring Motor

source:Qianye Precision time:2022-9-3
 A constant torque spring motor is a strip of prestressed spring material that forms a coil and is stored on a small storage drum. The free end is then pinned and rewound onto the larger output drum; this is the “winding” part of the constant torque spring cycle. When the output drum is released, the spring will return to the storage drum to assume its natural curvature, rotating the output drum and providing an almost constant torque.
       Constant torque springs are made of type 301 high quality stainless steel and are supplied in coil form for mounting on the motor drum. Its main features are: 1. Long time deflection under almost constant torque. Positive or limited negative gradients can be achieved. 2. Minimal inter-coil friction and resulting hysteresis, which is common in power springs. 3. Rotary motion is provided directly from the output drum or linear displacement by using cables and spools.
       Many applications utilize constant torque spring motors, such as: cord retractors, balance retrieval and return applications, drive motors, cordless curtains, and more. The spring features a high turn design, making it ideal for balancing applications. When they are fully turned, the springs apply a constant torque. You can also guarantee high torque levels. This is due to their compactness and high efficiency.
       The function of the constant torque spring motor depends on the design. The size of the spring can vary. Therefore, they make them suitable for use in a variety of applications. We strongly recommend that you consult Qianye Precision at the design stage, which will greatly facilitate the further assembly process.
       There are two ways to connect a constant torque spring motor. If the connection direction is the same, it is called a type A motor. If the connection is reversed, it is called a B-type motor. See illustration below.

A type constant torque spring motor    B type constant torque spring motor

       Type A and Type B constant torque spring motors share some similarities. These include ease of assembly and operation. Almost constant torque force, high number of turns, however, the torque level of the B type is higher than that of the A type. The spring on the stretch storage drum ensures constant torque. Spring wants to return to its original shape. The movement of the output drum produces a constant torque.
       The design of constant torque spring motors plays an important role in the efficiency of your application. The factors you should consider are: 1. Shaft – including inner and outer diameters. 2. The working height of the applied load. 3. Carrying capacity. 4. Load capacity depends on application. 5. Material, we usually use stainless steel or high carbon steel as the raw material of the spring.
       You can choose our standard constant torque spring for motor design. Additionally, if your application requires unique springs, customization is possible. Shenzhen Qianye Precision Metal Co., Ltd. is designed for customer-specific applications. Using professional technology to meet your specified requirements, we sincerely recommend that customers obtain consulting services from our R&D engineers in the early stage of product introduction and development. Design, develop, and sample products according to your needs, so that your products can find the best solution to meet your application needs.

Latest News

 Application of constant force spring in medical equipment
Application of constant force spring in medical equipment

Time:2022-9-14

A support device for assisting a patient is used to assist the movement of a patient at the patient support device. In the prior art, a caregiver would operate a patient lift or motor by guiding the lift to raise or lower the patient at the patient support. Such manipulations often require the precise manipulation of heavy forceps and motors...

 Two aspects to be considered in designing constant force spring
Two aspects to be considered in designing constant force spring

Time:2022-9-15

The constant force spring is made of stainless steel strip. The high strength steel strip is shaped by specific spring production equipment. When the external force is straightened, the hair strip will naturally roll back and produce elastic force. However, to achieve our goal, we can return to the designated starting point after displacement.     Constant force spring has the characteristics of maintaining...

 Automatic rolling shutter
Automatic rolling shutter

Time:2022-9-14

   It has to be said that laziness is a major driving force to promote scientific and technological progress. The emergence of a series of smart appliances not only makes people's life intelligent and convenient, but also gives everyone more opportunities to "be lazy" to complete other work or things. The charm of smart appliances lies in the linkage control...

 Variable Force Springs In New Point Of Purchase Display
Variable Force Springs In New Point Of Purchase Display

Time:2022-9-14

Automatic advance shelves are more widely used in stores and people's lives, and are more often used for displaying and placing goods (incense hata, rosemary, etc.). However, the conventional shelf propeller has one end of the baffle on both sides fixed and the other end movable. Although in use, after the first row of goods is taken away, the second...

 Constant Torque Spring Motor
Constant Torque Spring Motor

Time:2022-9-3

 A constant torque spring motor is a strip of prestressed spring material that forms a coil and is stored on a small storage drum. The free end is then pinned and rewound onto the larger output drum; this is the "winding" part of the constant torque spring cycle. When the output drum is released, the spring will return to the...

 Build dreams together, healthy counterparts-Qianye precision
Build dreams together, healthy counterparts-Qianye precision

Time:2022-9-13

Qianye team is convinced that the first priority of corporate governance is Qianye loves every employee.The health of employees is the company's greatest wealth, to ensure the health of employees, create a good working and living environment, and reflect the company's care for employees. On November 15, 2021, Shenzhen Qianye Precision Metal Co., Ltd. officially kicked off the annual free...

Constant Torque Spring Motor Product