TWM612847U - Press tool lifting device for sewing machine - Google Patents

Abstract

The new model relates to a presser lifting device of a sewing machine, which includes an actuator, a lifting arm, a presser foot mechanism, and a pulling and lifting mechanism. The actuator includes an actuating rod; the lifting arm has a pivoting part and a receiving part. An abutting top is provided between the pivoting part and the driven part, the pivoting part is pivotally connected to the body, and the driven part is configured corresponding to the actuating rod and is driven; the presser foot mechanism includes a pressing bar that penetrates the body; the pulling and lifting mechanism includes a swing element and a rotating The element and the pull rod, the swing element and the rotation element are respectively pivotally connected to the body, the pull rod is respectively connected to the swing element and the rotation element, the swing element includes an extension arm and a rolling body that is connected to the extension arm and cooperates with the top to act; thereby, not only can lower Friction damping can also improve the smoothness of operation and prolong the service life of components.

Description

Press tool lifting device of sewing machine

This model relates to the technology of a sewing machine, especially a presser lifting device of a sewing machine.

With the advancement and improvement of industrial technology, in the past there were only manual or knee-operated presser lifting devices that were operated by humans. Obviously, they can no longer meet the needs of the current stage. Therefore, relevant industries have successively developed various electric presser lifting devices. .

However, the existing electric presser lifting device either does not operate smoothly or has a short service life. In addition, some lifting devices are too large and generate a lot of noise during operation. The large volume not only increases packaging and transportation costs, but also allows the limited space of the operator to be greatly occupied; and, long-term noise It will cause tinnitus or related diseases to the operators on site. In addition, there are some electric presser lifting devices, which drastically change the original transmission mechanism, which keeps its use cost high.

In view of this, the creators of the new type devote themselves to the above-mentioned shortcomings of the existing technology, and they have devoted themselves to research and cooperate with the application of theories, and try their best to solve the above-mentioned problems, which has become the goal of the new type of creators' improvement.

One purpose of the present invention is to provide a presser lifting device for a sewing machine, which uses rolling elements and rolling against the top to make the oscillating element swing, which can not only reduce frictional damping, but also improve the smoothness of operation and the extension of the element. Service life.

In order to achieve the above objective, the present invention provides a presser lifting device for a sewing machine. The sewing machine has a body. The presser lifting device includes an actuator, a lifting arm, a presser foot mechanism, and a pulling and lifting mechanism. The actuator includes an actuating rod capable of reciprocating movement; the two ends of the lifting arm are respectively provided with a pivoting part and a receiving part, a top part is provided between the pivoting part and the receiving part, and the pivoting part is pivoted Connected to the body, the actuated portion is configured and driven corresponding to the actuating rod; the presser foot mechanism includes a pressing rod that penetrates the body; the pulling and lifting mechanism includes a swing element, a rotating element, and A pull rod, the swing element and the rotation element are respectively pivotally connected to the body, the two ends of the pull rod are respectively connected to the swing element and the rotation element, and the swing element includes an extension arm and a parallel connection to the extension arm A rolling body that cooperates with the top of the abutment; wherein, when the lifting arm is actuated by the actuating rod, the swing element rotates through the rolling contact between the rolling body and the top of the abutment, thereby driving the pull rod and the top The rotating element lifts the pressure rod upwards.

The new model also has the following functions. By concealing the actuator into the cavity of the body, the high noise generated by the actuating rod during the movement can be reduced. Since the actuator does not protrude from the outside of the body, packaging materials and transportation costs can be effectively controlled. In addition, the use of the sloping plate at the top of the abutment can increase the movement stroke of the extension arm and achieve the effect of saving effort. Furthermore, the operator's use space has also been greatly improved.

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the drawings are only provided for reference and explanation, and are not intended to limit the present invention.

Please refer to Figures 1 to 4, the present invention provides a presser lifting device for a sewing machine. The sewing machine 8 has a body 81. The rear section of the body 81 has a cavity A. The presser lifting device mainly includes an actuator 10. A lifting arm 20, a presser foot mechanism 30 and a pulling and lifting mechanism 40.

The actuator 10 is housed in the cavity A of the body 81. It can be a solenoid valve, but it is not limited to this type. It can also be a pneumatic cylinder or a hydraulic cylinder. The actuator 10 It mainly includes a motor part 11 and an actuating rod 12. The motor part 11 is fixed on the body 81 and concealed in the cavity A, and it mainly includes winding sets, wires and other related components. The actuating rod 12 is made of silicon steel and other materials. It is made to penetrate the center of the motor component 11, and after the wire is energized and the winding group is excited, the actuating rod 12 can be driven to produce a reciprocating linear movement relative to the motor component 11.

The two ends of the lifting arm 20 are respectively formed with a pivoting portion 21 and a receiving portion 22, a top portion 23 is provided between the pivoting portion 21 and the receiving portion 22, and the pivoting portion 21 is provided with a first pivot hole 211 (see Figure 3), for a first bolt 24 to pass through and be pivotally connected to the body 81, the receiving part 22 is equipped with a roller 221, the roller 221 is corresponding to the end of the actuator rod 12 configuration. The top portion 23 of this embodiment is an inclined plate.

The presser foot mechanism 30 mainly includes a press rod 31 and a set of fasteners 32. The press rod 31 penetrates the body 81 or penetrates the body 81 through a shaft sleeve (not shown in the figure). The fastener 32 in this embodiment is a ring , Which is sleeved and fixed on the upper part of the pressing rod 31. The presser foot mechanism 30 also includes a compression spring 33, an elastic force adjusting bolt 34, and a presser foot 35. The compression spring 33 is elastically clamped between the pressing rod 31 and the elastic force adjusting bolt 34, and the elastic force adjusting bolt 34 is locked on the body. The upper part 81 is used to adjust the downward pressure of the pressing rod 31 according to various use conditions, and the pressing foot 35 is connected to the bottom end of the pressing rod 31.

The pulling and lifting mechanism 40 mainly includes a swing element 41, a rotating element 42, a pull rod 43, and a presser foot lifter 44. The swing element 41 and the rotating element 42 are respectively pivotally connected to the body 81, and the swing element 41 mainly includes a The longitudinal arm 411, a transverse arm 412, an extension arm 413, and a rolling body 414, wherein the transverse arm 412 is connected to the longitudinal arm 411 and is approximately L-shaped. The extension arm 413 of this embodiment is away from the longitudinal arm 412 from the transverse arm 412 One end of 411 slopes downward, and the rolling element 414 is connected to the end of the extension arm 413 away from the transverse arm 412. The rolling element 414 can be a circular contact body such as a bearing or a roller column. A second pivot hole 415 is provided at the corner of the, and a through hole 416 is provided at the end of the transverse arm 412 away from the second pivot hole 415; and a first screw hole 417 is provided at the end of the longitudinal arm 411 away from the transverse arm 412 , The second pivot hole 415 is for a second bolt 418 to pass through and is pivotally connected to the body 81, and the first screw hole 417 is for one end of the pull rod 43 and is provided through a screwing element (not shown) Lock set.

The rotating element 42 mainly includes a T-shaped plate 420. The two ends of the transverse portion of the T-shaped plate 420 are respectively provided with a third pivot hole 421 and a connecting hole 422, and a second screw is provided at the end of the longitudinal portion. Hole 423, the third pivot hole 421 is used for a third bolt 45 to pass through and is pivotally connected to the body 81, and the second screw hole 423 is used for the other end of the pull rod 43 and is locked by a screwing element . An arc-shaped slot 424 is opened at a position of the longitudinal portion adjacent to the lateral portion, and the arc-shaped slot 424 is used for a fourth bolt 46 to pass through the body 81 and be accommodated therein.

The presser foot lifting member 44 is connected to the connecting hole 422 of the rotating element 42 through a fixing element such as a rivet or screw, and is configured corresponding to the position of the sleeve member 32.

In addition, the press lifting device also includes a manual lifting press mechanism 50, which mainly includes a manual trigger 51, a shaft 52 and a cam 53, the shaft 52 passes through the body 81, and the manual trigger 51 and the cam 53 are connected At the two ends of the shaft 52, the manual trigger 51 is formed on the outside of the body 81, and the cam 53 is formed inside the body 81 and is located on one side of the aforementioned T-shaped plate 420. The turning operation causes the cam 53 to push the T-shaped plate 420 to rotate and swing, thereby driving the sleeve member 32 and the pressing rod 31 to lift up.

In addition, the presser lifting device also includes a knee-moving presser lifting mechanism 60, which mainly includes a knee-moving jack 61. One end of the knee-moving jack 61 is inserted into the aforementioned through hole 416, and the knee is moved by The push of the top rod 61 will cause the rotating element 42 to rotate and swing, and the presser foot lifting member 44 is driven to move upward through the rotating element 42, and then the sleeve 32 and the pressing rod 31 are lifted upward.

Please refer to FIG. 4, when in use, the actuating rod 12 pushes the lifting arm 20 upwards. At this time, the lifting arm 20 will rotate upwards with the first pivot hole 211 (see FIG. 3) as the center of rotation. The rolling contact of the rolling element 414 causes the swing element 41 to rotate and swing in a clockwise direction, thereby simultaneously driving the pull rod 43 to make the rotating element 42 rotate and swing counterclockwise with the third pivot hole 421 as the center of rotation, which is driven by the rotating element 42 The presser foot lifting member 44 moves upward, which will lift the sleeve member 32 and the press rod 31 upward.

Please refer to FIG. 5 and FIG. 6, where the swing element 41 may be the same as the foregoing embodiments. The extension arm 413A of the swing element 41 in this embodiment extends from the middle section of the longitudinal arm 411 and extends in the same direction as the transverse arm 412. The body 414 is connected to an end of the extension arm 413A away from the longitudinal arm 411; the longitudinal arm 411, the transverse arm 412 and the extension arm 413A together form an F-shape. In this way, it also has the equivalent effect of the foregoing embodiment.

In summary, the press lifting device of the new sewing machine can indeed achieve the intended purpose of use, while solving the lack of conventional knowledge, and because of its novelty and progress, it fully meets the requirements of a new patent application. It is proposed in accordance with the Patent Law For application, please check carefully and grant the patent for this case to protect the rights of the creator of the new type.

10: Actuator

11: Motor parts

12: Actuating lever

20: Raise the arm

21: Pivot

211: first pivot hole

22: Receiving part

221: Wheel

23: reach the top

24: The first bolt

30: Presser foot mechanism

31: Press rod

32: sets of firmware

33: Compression spring

34: Elastic adjustment bolt

35: presser foot

40: Lifting mechanism

41: swing element

411: Longitudinal arm

412: Transverse Arm

413, 413A: Extension arm

414: rolling element

415: second pivot hole

416: Through hole

417: first screw hole

418: second bolt

42: Rotating element

420: T-shaped plate

421: Third Pivot Hole

422: connection hole

423: second screw hole

424: Arc Groove

43: lever

44: presser foot lifter

45: third bolt

46: The fourth bolt

50: Manual lifting and pressing mechanism

51: manual trigger

52: Axle

53: Cam

60: Knee lift and press mechanism

61: Knee-driven ejector

8: Sewing machine

81: body

A: Chamber

Figure 1 is the combined appearance view of the presser lifting device of the new sewing machine.

Figure 2 is a combined perspective view of the new type of presser lifting device.

Figure 3 is the front view of the new press tool lifting device assembly.

Figure 4 is the state diagram of the new press lifting device applied to the sewing machine.

Figure 5 is a combined perspective view of another embodiment of the present invention.

Figure 6 is a front view of another embodiment of the present invention.

10: Actuator

11: Motor parts

12: Actuating lever

20: Raise the arm

21: Pivot

221: Wheel

23: reach the top

24: The first bolt

30: Presser foot mechanism

31: Press rod

32: sets of firmware

34: Elastic adjustment bolt

35: presser foot

41: swing element

411: Longitudinal arm

412: Transverse Arm

413: Extension Arm

414: rolling element

42: Rotating element

424: Arc Groove

43: lever

44: presser foot lifter

45: third bolt

46: The fourth bolt

50: Manual lifting and pressing mechanism

60: Knee lift and press mechanism

61: Knee-driven ejector

8: Sewing machine

81: body

A: Chamber

Claims (10)

A presser lifting device of a sewing machine, the sewing machine has a body, and the presser lifting device includes: Actuators, including actuating rods capable of reciprocating movement; A lifting arm has a pivoting part and a receiving part at both ends, a top abutting part is provided between the pivoting part and the receiving part, the pivoting part is pivotally connected to the body, and the receiving part corresponds to Is configured and driven by the actuating rod; A presser foot mechanism, including a presser rod that penetrates the body; and A pulling and lifting mechanism includes a swinging element, a rotating element and a pull rod. The swinging element and the rotating element are respectively pivotally connected to the body, and the two ends of the pull rod are respectively connected to the swinging element and the rotating element. Element, the swing element includes an extension arm and a rolling body connected to the extension arm and cooperating with the top portion; Wherein, when the lifting arm is actuated by the actuating rod, the swinging element rotates through the rolling contact between the rolling body and the top of the abutment, so as to drive the pull rod and the rotating element to lift the pressure bar upward. The presser lifting device of a sewing machine according to claim 1, wherein the swing element further includes a longitudinal arm and a transverse arm, the transverse arm and the longitudinal arm are connected in an L shape, and the extension arm is connected from the transverse arm The end away from the longitudinal arm is inclined downwardly and extends, and the rolling body is connected to the end of the extension arm away from the transverse arm. The presser lifting device of a sewing machine according to claim 1, wherein the swing element further includes a longitudinal arm and a transverse arm, the transverse arm and the longitudinal arm are connected in an L shape, and the extension arm is connected from the longitudinal arm The middle section extends in the same direction as the transverse arm, and the rolling body is connected to an end of the extending arm away from the longitudinal arm. The presser lifting device of a sewing machine according to claim 3, wherein the longitudinal arm, the transverse arm and the extension arm jointly form an F-shape. The presser lifting device of a sewing machine according to claim 2 or 3, wherein the pivotal portion of the lifting arm is provided with a first pivot hole for a first bolt to pass through and be pivotally connected to the body, The driven part is equipped with a roller, and the roller system corresponds to the end configuration of the actuating rod. The presser lifting device of a sewing machine according to claim 5, wherein a second pivot hole is opened at the corner of the longitudinal arm and the transverse arm, and the second pivot hole is used for a second bolt to pass through and It is pivotally connected to the body. The presser lifting device of a sewing machine according to claim 6, wherein the longitudinal arm is provided with a first screw hole at the end away from the transverse arm, and the first screw hole is for one end of the pull rod and penetrates a screw fixing element Be locked. The presser lifting device of a sewing machine according to claim 1, wherein the body has a cavity, the actuator further includes a motor part for the actuating rod to pass through, and the motor part is fixed on the body And concealed into the cavity. The presser lifting device of a sewing machine according to claim 1, wherein the rolling body is a bearing or a roller. The presser lifting device of a sewing machine according to claim 1, wherein the abutting top part is an inclined plate for rolling and lifting the rolling body.

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