Sewing machine pedal control box and its control device

Abstract

The present invention discloses a sewing machine foot control box and a control device thereof. The foot control box has an arc-shaped pressure rod activity cavity inside, a door-blocking platform is provided on the side of the pressure rod activity cavity so that the bottom of the pressure rod activity cavity is closed, and the other side of the pressure rod activity cavity has a pressure rod extending activity opening, and control panel fixing parts are provided on both sides of the door-blocking platform, and the control panel fixing parts are at a corresponding height with the door-blocking platform, and the first torsion spring blocking part and the second torsion spring blocking part are also provided on both sides of the door-blocking platform. The present invention can solve the technical problem of how to match the control panel to improve the performance of the foot pedal controller.

Description

Technical Field

[0001] The present invention relates to an accessory used on a sewing machine, specifically a pedal electric control box corresponding to a pedal on the sewing machine, also called a pedal controller. The present invention also relates to a control device using the control box. Background Art

[0002] At present, the foot controller of the sewing machine is mainly used to generate a signal to the main control system of the sewing machine under the action of the foot pedal, so that the main control system drives the corresponding mechanism to perform an action.

[0003] The shell of the current foot controller, i.e., the control box, is hollowed out at the position where the pressure rod cooperates, and the installation distance from the control board is long. As a result, the control board is long and there is no support at the center of the installation, resulting in frequent adjustment of the detection distance between the pressure rod and the control board, resulting in inaccurate detection.

[0004] In addition, one side of the torsion spring matched with the pressure rod mainly adopts point contact with the housing, so the force of the pressure rod to drive the torsion spring is relatively large, which makes the operation insensitive and inconvenient.

[0005] Furthermore, the dimensions of the columns fixedly mounted on the shell and other components or structures are relatively independent of each other, and are not a digitally integrated data combination that cooperates with each other. This makes it impossible to quickly optimize the structure of the shell, resulting in a complex structure, large volume, and waste of materials. Summary of the invention

[0006] The purpose of the present invention is to provide a sewing machine foot control box to solve the technical problem of how to match the control panel to improve the performance of the foot pedal controller.

[0007] Another object of the present invention is to provide a controller using the above-mentioned foot control box.

[0008] A foot control box, which has an arc-shaped pressure rod movable cavity inside, a door-blocking platform on the side of the pressure rod movable cavity so that the bottom of the pressure rod movable cavity is closed, and a pressure rod extending movable opening is provided on the other side of the pressure rod movable cavity, and control board fixings are provided on both sides of the door-blocking platform, and the control board fixings are at a corresponding height with the door-blocking platform, and the door-blocking platform is also provided with a first torsion spring stopper and a second torsion spring stopper on both sides; the first torsion spring stopper and the second torsion spring stopper are both plane-matched with the torsion spring; the door-blocking platform has a sensing chip placement groove in the direction toward the control board, and the control board has a sensing chip at the corresponding position; the upper edge of the foot control box is also provided with a semicircular threading groove; the connection line between the first torsion spring stopper and the second torsion spring stopper is 30-60 degrees with the connection line between the two control board fixings.

[0009] The two opposite sides of the door blocking platform are both arc-shaped.

[0010] The pedal control box is provided with inner ribs.

[0011] A foot control device for a sewing machine comprises a foot control box and a pressure rod; the foot control box has an arc-shaped pressure rod movable cavity inside, a door-blocking platform on the side of the pressure rod movable cavity so that the bottom of the pressure rod movable cavity is closed, and a pressure rod extending movable opening is provided on the other side of the pressure rod movable cavity, control panel fixings are provided on both sides of the door-blocking platform, the control panel fixings are at a corresponding height with the door-blocking platform, and the control panel has a sensing chip; the sensing chip corresponds to the magnet on the pressure rod; the door-blocking platform also has a first torsion spring stopper and a second torsion spring stopper on both sides; the first torsion spring stopper and the second torsion spring stopper are both plane-matched with the torsion spring; the door-blocking platform has a sensing chip placement groove in the direction toward the control panel, and the control panel has a sensing chip at the corresponding position; the upper edge of the foot control box also has a semicircular threading groove; the connecting line between the first torsion spring stopper and the second torsion spring stopper is 30-60 degrees with the connecting line between the two control panel fixings; one end of the pressure rod is movably fitted in the pressure rod movable cavity.

[0012] A screw hole is provided below the position where the pressure rod is placed on which the magnet is placed, and a screw is fixed on the screw hole.

[0013] The control panel fixing piece and the door blocking platform are at the same height.

[0014] The two opposite sides of the door blocking platform are both arc-shaped.

[0015] The pedal control box is provided with inner ribs.

[0016] The torsion spring is also provided with a torsion spring cover, which is L-shaped as a whole and has reinforcing ribs arranged in a cross shape.

[0017] One end of the torsion spring is shorter than the other end.

[0018] The beneficial effects of the present invention are as follows: due to the innovative addition of a door-blocking platform, it can be used as a closed door to close the active cavity of the pressure rod, blocking the passage for dust or other small objects such as scraps of cloth to enter the controller, and can also be used as a support platform for the control panel to avoid deformation of the control panel due to lack of support, and ensure the accuracy of the position of the magnet on the pressure plate and the magnet sensor chip on the control panel. Since the torsion spring is in contact with the plane, it can have a larger effective area; since the control panel fixing part and the door-blocking platform are at the same height, the horizontal installation of the control panel is ensured while reducing the length of the control panel, which is also conducive to the coordination of the mounting plate with other components, thereby realizing the correlation between the dimensions of the column and other components or structures, forming a mutually coordinated digital integrated data combination, which can quickly optimize the structure of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1is a schematic diagram of the control device;

[0020] Figure 2 is a schematic diagram of the other side of the control;

[0021] Figure 3 is a schematic diagram showing the interior of the control device;

[0022] Figure 4 Yes Figure 3 The schematic diagram of the device without the control panel;

[0023] Figure 5 This is a schematic diagram of the control board display sensor chip;

[0024] Figure 6 is a schematic diagram of the control box;

[0025] Figure 7 Here is a diagram of the other side of the control box;

[0026] Figure 8 It is a schematic diagram of the pressure plate showing the installation position of the magnet;

[0027] In the figure, 1. pedal control box, 11. pressure rod movable cavity, 12. door blocking platform, 121. sensor chip placement slot, 13. pressure rod extending movable opening, 14. control board fixing part, 15. first torsion spring blocking part, 16. second torsion spring blocking part, 17. threading slot, 2. pressure rod, 21. magnet placement slot, 22. screw hole, 3. torsion spring cover, 4. torsion spring, 5. control board, 51. sensor chip. DETAILED DESCRIPTION

[0028] Please refer to Figures 1 to 8 The sewing machine foot control device in the figure includes a foot control box 1 and a pressure rod 2. It also includes two spring structures and other existing components.

[0029] The pedal control box 1 has an integrally arc-shaped pressure rod movable chamber 11 inside, and a part of the pressure plate 2 reciprocates at this position under the action of the pedal. A door-blocking platform 12 is provided on the side of the pressure rod movable chamber 11 so that the bottom of the pressure rod movable chamber 11 is closed, and this closed state can minimize the entry of foreign substances into the control box 1. Both sides of the door-blocking platform 122 can adopt an arc-shaped design. The other side of the pressure rod movable chamber 11 has a pressure rod extending movable opening 13, and a head position of the pressure rod 2 squeezes one end of the torsion spring 4 at the position where the pressure rod extends the movable opening 13 to realize the half-rear-stepping presser foot lifting and full-rear-stepping paper-cutting actions. Both sides of the door-blocking platform 12 have control panel fixing parts 14, and the control panel fixing parts 14 are integrally cylindrical structures. The control panel fixing parts 14 and the door-blocking platform 12 are at corresponding heights, preferably in the same horizontal plane, and the above-mentioned control panel fixing parts 14 are used to fix the control panel 5 in the left and right directions. The control board 5 has a sensing chip 51; the sensing chip 51 corresponds to the magnet on the pressure rod 2; in this case, the overall length of the control board is shortened, so the device is made more compact. The specific control principle of the control board 5 can refer to the prior art.

[0030] The door-blocking platform 12 also has a first torsion spring stopper 15 and a second torsion spring stopper 16 on both sides; the first torsion spring stopper 15 and the second torsion spring stopper 16 are both in plane matching with the torsion spring 4 to replace the existing point or line contact mode, thereby increasing the contact area between the torsion spring 4 and the above two stops. The door-blocking platform 12 has a sensor chip placement slot 121 in the direction toward the control board 5, and the control board 5 has a sensor chip 51 at the corresponding position, and the sensor chip 51 can use an existing chip. The upper edge position of the foot control box 1 also has a semicircular threading groove 17, which is convenient for the insertion of the signal line. The connection line between the first torsion spring stopper 15 and the second torsion spring stopper 16 is 30-60 degrees, preferably 30 degrees, to the connection line between the two control board fixing parts 14, so that the pressure rod 2 can rotate flexibly without interfering with other components and optimizing the coordination of other components. In order to improve the strength of the entire box body, internal ribs can be designed in the foot control box.

[0031] The main structure of the pressure rod 2 of this case adopts the existing design. In order to better position the magnet, this case has two screw holes 22 below the position where the magnet is placed and below the magnet placement groove 21. Screws that will be attracted by the magnet are fixed on the screw holes 22. When installing the magnet, first install the screws, then apply glue, and finally press the magnet to make it firmly installed on the pressure rod.

[0032] The torsion spring 4 of the present invention is also provided with a torsion spring cover 3, which is L-shaped as a whole and has reinforcing ribs arranged in a cross shape. The torsion spring 4 is also designed with one end shorter than the other end.

Claims

1. Foot control box, characterized by: There is an arc-shaped pressure rod movable cavity inside, and a door-blocking platform is provided on the side of the pressure rod movable cavity so that the bottom of the pressure rod movable cavity is closed, and the other side of the pressure rod movable cavity has a pressure rod extending movable opening, and control panel fixing parts are provided on both sides of the door-blocking platform, and the control panel fixing parts are at a corresponding height with the door-blocking platform, and the first torsion spring stopper and the second torsion spring stopper are also provided on both sides of the door-blocking platform; the first torsion spring stopper and the second torsion spring stopper are both plane-matched with the torsion spring; the door-blocking platform has a sensing chip placement groove in the direction toward the control panel, and the control panel has a sensing chip at the corresponding position; the upper edge position of the pedal control box also has a semicircular threading groove; the connection line between the first torsion spring stopper and the second torsion spring stopper is 30-60 degrees with the connection line between the two control panel fixing parts; The door-blocking platform serves as a closed door for the pressure rod activity cavity to close the channel for dust or other small objects to enter the controller. It also serves as a support platform for the control board to prevent the control board from being deformed due to lack of support and to ensure the accuracy of the position of the magnet on the pressure plate and the magnet sensor chip on the control board. The two opposite sides of the door-blocking platform are both arc-shaped; The pedal control box is provided with inner ribs.

2. A foot pedal control device for a sewing machine, characterized in that: It comprises a pedal control box and a pressure rod; the pedal control box has an arc-shaped pressure rod movable cavity inside, a door-blocking platform is provided on the side of the pressure rod movable cavity so that the bottom of the pressure rod movable cavity is closed, and the other side of the pressure rod movable cavity has a pressure rod extending movable opening, and control panel fixings are provided on both sides of the door-blocking platform, and the control panel fixings are at a corresponding height with the door-blocking platform, and the control panel has a sensing chip; the sensing chip corresponds to the magnet on the pressure rod; the first torsion spring stopper and the second torsion spring stopper are also provided on both sides of the door-blocking platform; the first torsion spring stopper and the second torsion spring stopper are both plane-matched with the torsion spring; the door-blocking platform is facing the control panel The control panel has a sensing chip placement slot in the direction, and the control panel has a sensing chip at the corresponding position; the upper edge of the pedal control box also has a semicircular threading slot; the connection line between the first torsion spring stopper and the second torsion spring stopper is 30-60 degrees from the connection line between the two control panel fixing parts; one end of the pressure rod is movably matched in the pressure rod movable cavity; the pressure rod has a screw hole below the position where the magnet is placed, and a screw is fixed on the screw hole; the control panel fixing part is at the same height as the door blocking platform; the torsion spring also has a torsion spring cover, which is L-shaped as a whole, and has reinforcing ribs arranged in a cross shape; The two opposite sides of the door-blocking platform are both arc-shaped; the pedal control box has internal ribs; One end of the torsion spring is shorter than the other end; The door-blocking platform serves as a closed door to close the movable cavity of the pressure rod, blocking the channel for dust or other small objects to enter the controller. It also serves as a support platform for the control board to prevent the control board from being deformed due to lack of support, and ensures the accuracy of the position of the magnet on the pressure plate and the magnet sensor chip on the control board.

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