一种缝纫机脚踏控制器压杆
By utilizing the helical motion of the screw and adjusting block, along with the bearing design, the problem of spring adjustment in existing sewing machine foot pedal controllers has been solved, achieving precise spring adjustment and extended lifespan, while reducing operational difficulty.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sewing machine foot pedal controllers require forceful pulling to adjust the tension of the elastic element, which leads to spring deformation and wear, affecting its service life.
The screw and adjusting block are used in a helical motion combination. The position of the lower end of the spring is adjusted by rotating the adjusting knob. The bearing avoids dry friction and achieves precise adjustment.
It improves the service life and adjustment accuracy of the spring, reduces mechanical friction, and lowers the difficulty of operation.
Smart Images
Figure CN224513802U_ABST
Abstract
Claims
1. A sewing machine foot control plunger, characterized by: The device includes a pressure rod body (10), the tail end of which is hinged to a sewing machine foot pedal controller and a tension spring that cooperates with the pressure rod body (10). The device is characterized in that: the lower end of the pressure rod body (10) forms an integral forward protrusion (11), and at least one connecting rod mounting hole (12) is provided at the forward protrusion (11) for connecting the foot pedal connecting rod. The pressure rod body (10) is provided with an adjustment groove and an adjustment part (19) disposed in the adjustment groove. The adjustment part (19) includes a screw (17) and an adjustment block (15) threadedly connected to the screw (17). The adjustment block (15) is slidably disposed in the adjustment groove. After the screw (17) and the adjustment block (15) generate a helical pair motion, they push the adjustment block (15) to move along the axis of the screw (17). The screw (17) is rotatably disposed in the adjustment groove. The end of the adjusting block (15) extends out of the pressure rod body (10), and the lower end of the tension spring is connected to the lower end of the adjusting block (15).
2. A presser bar for a sewing machine foot control according to claim 1, wherein: The adjusting block (15) also includes a screw nut (16), which is embedded and fixed in the adjusting block (15) and the screw nut (16) and the screw (17) are threadedly connected.
3. A presser bar for a sewing machine foot control according to claim 2, wherein: The pressure rod body (10) is provided with a T-shaped slide groove (20), and the adjusting block (15) has a T-shaped cross-section and is slidably disposed in the T-shaped slide groove (20).
4. A presser bar for a sewing machine foot control according to claim 3, wherein: It also includes a rotating rod (14), which passes through the pressure rod body (10) and is coaxially connected to the screw (17). An adjustment knob (13) is fixedly provided at the tail end of the rotating rod (14). Rotating the adjustment knob (13) drives the rotating rod (14) and the screw (17) to rotate.
5. A presser bar for a sewing machine foot control according to claim 4, wherein: The lower end of the adjusting block (15) extending out of the pressure rod body (10) is provided with a through hole, and a bearing (18) is provided in the through hole. The lower end of the tension spring is hooked and connected to the inner ring of the bearing (18).