Smoothly adjustable display screen bracket

A smoothly adjustable display screen bracket, comprising:

• a first connecting seat, a connecting rod group and a second connecting seat, and the connecting rod group is arranged between the first connecting seat and the second connecting seat, wherein the connecting rod group comprises a connecting rod, a force applying mechanism, a limiting sleeve, a cam member and a roller, and the roller is rotatably arranged on the second connecting seat, and one end of the force applying mechanism is connected with the first connecting seat, and the other end of the force applying mechanism is connected with the cam member, wherein a curved surface of the cam member is configured to press against the roller under the pushing action of the force applying mechanism and the limiting sleeve is configured to cover the outside of the force applying mechanism,
• wherein the force applying mechanism comprises a pressure spring, and one end of the pressure spring abuts against the cam member,
• wherein the force applying mechanism further comprises a hanging plate, an adjusting screw and an adjusting moving block, and one end of the hanging plate is configured to pivotally connect with the first connecting seat, the adjusting screw is configured to clamp with the hanging plate by screw head, the adjusting moving block is configured to screw on the adjusting screw, the pressure spring is configured to sleeve on the outside of the adjusting screw and both ends of the pressure spring are configured to abut between the adjusting moving block and the cam member, the limiting sleeve is configured to cover the outside of the pressure spring,
• wherein the limiting sleeve comprises a rigid sleeve, the inner diameter of the rigid sleeve is configured to adapt to the outer diameter of the pressure spring, and the rigid sleeve is configured to cover the outside of the pressure spring,
• wherein the connecting rod comprises a first connecting rod and a second connecting rod, and the second connecting rod is configured to cover with the upper end of the first connecting rod, and one end of the first connecting rod is configured to pivotally connected with the first connecting seat, the other end of the first connecting rod is configured to pivotally connect with the second connecting seat, one end of the second connecting rod is configured to pivotally connect with the first connecting seat, and the other end of the second connecting rod is configured to pivotally connect with the second connecting seat, the rigid sleeve is configured to fix to the second connecting rod by screws.