TWI503463B - Sewing machine structure with a driving selection device being fixed when an upper ring hook is not driven - Google Patents

Description

Sewing machine structure with drive selection device with upper ring hooked in a non-driven state

The present invention relates to a sewing machine, and more particularly to a sewing machine structure having a drive selection device in which an upper ring hook can be positioned in a non-driven state.

A general sewing machine mainly uses a needle driving device that can be driven by a needle to cooperate with a first hook arm that drives the upper ring hook, a second hook arm that drives the lower ring hook, and a presser foot on a needle plate, so that the sewing machine The sewing machine can at least perform seaming operations such as seaming, folding, decoration, and splicing.

Next, referring to Figures 1 and 2, the sewing machine is more capable of controlling the first hook arm 11 to be in a driving state or in a non-driving state according to the needs of the user, however, when the first hook arm 11 is not driven. The upper ring hook 12 driven by the needle ring 12 must be located below the needle plate 13 to avoid interference with the upper ring hook 12 when the needle 14 is actuated, and the conventional sewing machine can only control the driving of the first hook arm 11 The state or the non-driving state does not ensure that when the first hook arm 11 is in the non-driving state, the upper ring hook 12 driven by the first hook arm 11 is located below the needle plate 13 or does not interfere with the needle, thereby highlighting Control the flaws of uncertainty.

Therefore, how to develop a sewing machine structure, which can solve the above defects is the motive of the invention.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing machine structure having a drive selection device in which an upper ring hook can be reliably positioned in a non-driven state.

In order to achieve the foregoing object, in accordance with the present invention, a sewing machine structure having a drive selection device in which an upper ring hook can be positioned in a non-driven state is provided, wherein the machine seat of the sewing machine has a drive shaft for driving the upper ring hook The hook arm is further provided with a swinging member, and the swinging member is pivotally disposed on a pivot shaft. The pivoting shaft is fixed on the base. The pivoting shaft is further provided with a driving member. The driving shaft is driven back and forth, and a driving selection device is arranged on the base to select a state in which the driving member and the swinging member are driven and not driven; the driving selecting device has a moving member disposed on the pivot. a moving member for moving the moving member and a pulling member for driving the rotating member at the same time; wherein: one end of the moving member extends to the driving member, and the driving member is provided with a wearing sleeve a moving portion is inserted into the shaft, and the swinging member is oppositely disposed with a hole. The moving member is provided with a swaying portion; the swaying member is pivotally mounted on the base and has a swaying end at one end for the swaying There is a moving column on the end The swaying member is configured to be engaged with the swaying portion, and the other end of the swaying member is provided with a locking portion opposite to the urging member, and the cocking member is abutted; the oscillating member is pivotally mounted on the base And a side of the clamping portion is provided with a top end, the triggering member is further provided with a certain elastic portion; one end of the elastic member is fixed to the fixed elastic portion, and the other end is positioned at the tilting end, so that the a pre-stressing force is formed between the elastic portion and the swaying end; the oscillating member is provided with a stopping portion; when the stopping portion is aligned with the locking portion, the urging member is actuated to move toward the oscillating member, And the top end is directed toward the locking portion, so that the locking portion can be surely clamped to the stopping portion, the swinging member can be kept stationary, and the driving selection device is in a non-driving state.

Preferably, one end of the driving member is driven by a linkage member at one end, and the driving member is driven There is a pivot hole for the pivot to pass through, and the other end is provided with the sleeve portion for the through shaft to pass through.

Preferably, the center of the oscillating member has a pivot hole for the pivot to pass through, and one end is pivotally disposed on the hook arm. The swinging member is fixed at the other end with a swash plate, and the swash plate is provided with the stop. And the hole, the center of the swash plate has a perforation for the pivot hole, and the oscillating disk forms an elongated adjustment hole for the bolt to pass through, so that the angle of the swash plate can be adjusted and positioned. .

Preferably, the outer ring of the moving member is provided with a groove-shaped swaying portion for the ramming column to extend therein, and a sliding shaft portion protrudes from a side of the moving member, and the through-shaft portion extends toward the driving member There is this thread.

Preferably, when the trigger member is moved and the top portion is moved away from the locking portion, the swaying end of the swaying member is pulled by the elastic member, so that the moving member is driven toward the driving portion. The threading shaft on the moving member has a pre-stress to the swinging member, and when the driving shaft rotates the driving member, the threading portion is aligned with the hole of the swinging member, and the threading shaft can penetrate The swinging member and the hook arm are driven in the through hole, and the driving selection device is in a driving state.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

11‧‧‧First hook arm

12‧‧‧Upper Ring

13‧‧‧ needle board

14‧‧‧ stitches

21‧‧‧ machine base

22‧‧‧Drive shaft

23‧‧‧Upper Ring

24‧‧‧ hook arm

25‧‧‧ linkages

31‧‧‧Swinging parts

311‧‧‧ pivot hole

312‧‧‧ one end

313‧‧‧Other end

32‧‧‧ pivot

33‧‧‧ Drives

331‧‧‧ pivot hole

332‧‧‧ wearing sets

333‧‧‧ one end

34‧‧‧through shaft

35‧‧‧ hole

36‧‧‧Departure

37‧‧‧Bolts

38‧‧‧Swing disk

381‧‧‧Perforation

382‧‧‧Adjustment hole

40‧‧‧Drive selection device

41‧‧‧Mobile parts

411‧‧‧掣部

412‧‧‧wear shaft

42‧‧‧掣动

421‧‧‧掣动端

422‧‧‧掣动柱

423‧‧‧Card Department

43‧‧‧ Pulling parts

431‧‧‧ top end

432‧‧‧Fixed Department

44‧‧‧Flexible parts

441‧‧‧ one end

442‧‧‧other end

Figure 1 is a schematic view of the upper hook of the sewing machine above the needle plate.

Figure 2 is a schematic view of the upper hook of the sewing machine under the needle plate.

Figure 3 is a perspective view of the present invention.

Figure 4 is a cross-sectional view of line 4-4 of Figure 3.

Figure 5 is a perspective view of the present invention showing the state of another viewing angle.

Figure 6 is a partial exploded perspective view of the present invention.

Figure 7 is a side view of the invention.

Figure 8 is a side view of the present invention showing the state of another viewing angle.

Fig. 9 is a side view showing the operation of the present invention, showing the state in which the stopper portion of the oscillating disc is aligned with the engaging portion of the ram.

Figure 10 is a side elevational view of the actuating of the present invention showing the state in which the actuating trigger is moved in the direction of the swinging member.

Figure 11 is a side elevational view of the actuating of the present invention showing the state in which the actuating trigger moves in the direction of the swinging member for another viewing angle.

Fig. 12 is an exploded perspective view showing the state in which the swinging member, the bolt, the swash plate, and the pivot are separated.

Referring to Figures 3 to 8, a sewing machine structure having a drive selection device in which an upper ring hook can be reliably positioned in a non-driven state is provided in the embodiment of the present invention, wherein the base 21 of the sewing machine has a drive shaft 22 The hook arm 24 having the upper ring hook 23 is further disposed, and the swing arm 31 is pivotally disposed with a pivoting member 31. The swinging member 31 is pivotally mounted on a pivot 32. The pivot 32 is fixed to the base 21, and the pivot 32 is fixed to the base 32. The driving member 33 is further provided with a driving member 33. The driving member 33 is provided with a driving selection device 40 for selecting the driving member 33 and the swinging member 31. In the embodiment, the driving member 33 has a pivot hole 331 for the pivot 32 to pass through, and the other end is provided with a sleeve. The portion 332 is worn by a through shaft 34.

The driving selection device 40 has a moving member 41 disposed on the pivot 32, a moving member 42 for moving the moving member 41, and a triggering member 43 for simultaneously driving the movable member 42 when actuating; The driving member 33 is disposed at one end of the moving member 41, and the driving member 33 is provided with the wearing portion 332 for the through shaft 34 to pass through, and the swinging member 31 is oppositely disposed with a hole 35. The moving member 41 is provided with a swaying portion 411. In the embodiment, the outer diameter of the moving member 41 is provided with a groove-shaped swaying portion 411. The shaft portion 412 extends toward the driving member 33 The threading shaft 34 is provided.

The swaying member 42 is disposed on the base 21 and has a swaying end 421 at one end. The swaying end 421 is provided with a swaying post 422. The swaying post 422 is formed in a groove shape. The swaying portion 411 is provided with a locking portion 423 opposite to the triggering member 43 and abuts against the triggering member 43. The triggering member 43 is pivotally mounted on the base A top end 431 is disposed on the side of the engaging portion 423. The triggering member 43 is further provided with a certain elastic portion 432. One end 441 of an elastic member 44 is fixed to the fixed elastic portion 432, and the other end 442 The swaying column 422 is located at the swaying end 421 to form a pre-stress between the sliding portion 432 and the swaying end 421; the oscillating member 31 is provided with a stopping portion 36; in this embodiment, please At the same time, as shown in FIG. 12, the pivoting member 31 has a pivot hole 311 in the center for the pivot 32 to pass through, and one end 312 is pivotally disposed on the hook arm 24. The other end 313 of the swinging member 31 is fixed by a bolt 37. The swash plate 38 is provided with the stopping portion 36 and the through hole 35. The center of the oscillating disk 38 has a through hole 381 for the pivot 32 to pass through, and the swash plate 38 is used for the bolt 37 to pass through. Forming a long shape Adjusting hole 382, the angle of the wobble plate 38 is located may be positioned and adjusted.

The above description is the structure and configuration description of each main component of the embodiment of the present invention. The mode of operation and efficacy of the present invention are described below.

Referring to the figures 9 to 11, when the stopping portion 36 of the swash plate 38 is aligned with the locking portion 423 of the swaying member 42, the urging member 43 is moved in the direction of the oscillating member 31, and is topped. The manufacturing end 431 is directed toward the locking portion 423, so that the locking portion 423 can be surely locked to the stopping portion 36, and the swinging member 31 can be kept stationary, and the driving selection device 40 is in a non-driving state. It should be noted that the driving selection device 40 in the non-driving state means that when the locking portion 423 of the cocking member 42 is driven by the urging member 43 toward the oscillating member 31, the cocking member 42 is tilted. The column 422 will simultaneously drive the moving member 41 toward the pendulum The moving member 31 moves in the opposite direction to disengage the threading shaft 3 from the hole 35 of the swash plate 38, and finally the driving shaft 22 no longer drives the swinging member 31, the hook arm 24, and the upper ring hook 23 to operate.

Referring to FIGS. 7 and 8, when the trigger member 43 is moved and the top portion 431 is moved away from the locking portion 423, the swing end 421 of the tilting member 42 is received by the elastic member 44. Pulling the moving member 41 against the driving member 33, the threading shaft 34 on the moving member 41 has a pre-stress to the swinging member 31. When the driving shaft 22 rotates to drive the driving member 33, the wearing portion 33 is to be worn. The sleeve portion 332 is aligned with the through hole 35 of the swash plate 38. The through shaft 34 can penetrate the through hole 35 to drive the swinging member 31 and the hook arm 24. The driving selection device 40 is in a driving state.

It should be noted that, as shown in FIGS. 7 and 8, when the stopper portion 36 on the swash plate 38 is not aligned with the locking portion 423 of the swaying member 42, the swaying member 42 is clamped. The portion 423 is limited to the curved side surface 383 of the swash plate 38, such that the trigger member 43 cannot drive the locking portion 423 to a distance in the direction of the swash plate 38, and the through shaft 34 is kept penetrated. a state in the hole 35 of the swash plate 38 (that is, the drive selection device 40 is in a driving state). At this time, the upper ring hook 23 is located above the needle plate 13 as shown in FIG. 1; As shown in FIGS. 10 and 11, when the stopper portion 36 of the swash plate 38 is aligned with the locking portion 423 of the swaying member 42, the locking portion 423 of the swaying member 42 is no longer limited to the swash plate. The curved side surface 383 of the 38 causes the triggering member 43 to drive the locking portion 423 to a distance in the direction of the swash plate 38, and the insertion shaft 34 is disengaged from the hole 35 of the swash plate 38. (ie, the drive selection device 40 is in a non-driving state). At this time, the upper ring hook 23 is located below the needle plate 13 as shown in FIG. 2, and accordingly, the present invention controls the hook arm 24 to be Drive When it is ensured that the upper ring hook 23 is located below the needle plate 13, to avoid interference with the upper ring hook 23 when the needle 14 is actuated, the control is relatively determined, and the upper ring hook 23 can be surely driven. The purpose of positioning.

It is to be noted that, as shown in FIG. 9 and FIG. 12, since the other end 313 of the oscillating member 31 is fixed with a swaying disc 38 by a bolt 37, the swash plate 38 is provided with the stopping portion 36 and the through hole. 35, and the swash plate 38 is provided with an elongated adjusting hole 382 through the bolt 37, so that the angle at which the swash plate 38 is located can be adjusted and positioned, so that the stop on the swash plate 38 can be controlled. When the portion 36 is aligned with the locking portion 423 of the swaying member 42, the relative position between the upper ring hook 23 and the needle plate and the needle is only required to control the upper ring hook 23 from interfering with the needle at the time of actuation.

In the above, the above embodiments and the illustrations are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equal variations and modifications made by the scope of the patent application of the present invention are It should be within the scope of the patent of the present invention.

22‧‧‧Drive shaft

23‧‧‧Upper Ring

24‧‧‧ hook arm

25‧‧‧ linkages

31‧‧‧Swinging parts

312‧‧‧ one end

313‧‧‧Other end

32‧‧‧ pivot

333‧‧‧ one end

36‧‧‧Departure

38‧‧‧Swing disk

40‧‧‧Drive selection device

42‧‧‧掣动

423‧‧‧Card Department

43‧‧‧ Pulling parts

431‧‧‧ top end

432‧‧‧Fixed Department

44‧‧‧Flexible parts

Claims (5)

A sewing machine structure having a drive selection device with an upper ring hooked in a non-driven state and capable of being positioned. The base of the sewing machine has a drive shaft for driving a hook arm having an upper ring hook, and the hook arm is further provided with a swinging member. The oscillating member is pivotally disposed on a pivoting shaft, and the pivoting shaft is fixed on the base. The pivoting member is further provided with a driving member. The driving member is driven back and forth by the driving shaft, and a driving selection is arranged on the base. a device for selecting a state in which the driving member and the swinging member are driven and not driven to each other; the driving selecting device has a moving member disposed on the pivoting shaft, a driving member for moving the moving member, and an actuating member At the same time, the triggering member of the slidable member can be driven at the same time; wherein: one end of the moving member extends toward the driving member, and the driving member is provided with a sleeve portion for the threaded shaft to penetrate, and the oscillating member is oppositely disposed The moving member is provided with a swaying portion; the swaying member is pivotally disposed on the base and has a swaying end at one end, and a swaying column is disposed on the swaying end, and the swaying column is clamped The swaying part is driven, and the swaying part is another A clamping portion is disposed opposite to the triggering member, and the triggering member is abutted on the base; and the triggering member is pivotally disposed on the base, and a top end is extended to the engaging portion on one side, and the pulling portion is The device further has a certain elastic portion; one end of the elastic member is fixed to the fixed elastic portion, and the other end is positioned at the swaying end, so that a pre-force is formed between the fixed elastic portion and the swaying end; the oscillating member is provided a locking portion; when the stopping portion is aligned with the locking portion, the pulling member is moved in the direction of the swinging member, and the top end is directed toward the locking portion, so that the locking portion can be surely In the stop portion, the swinging member can be kept stationary, and the drive selecting means is in a non-driving state. A sewing machine structure having a drive selection device with a top ring hooked in a non-driven state and capable of being positioned as shown in the first aspect of the patent application, wherein one end of the drive member is a drive shaft through a linkage member The driving member has a pivot hole for the pivot to pass through, and the other end is provided with the wearing portion for the through shaft to pass through. A sewing machine structure having a drive selection device with an upper ring hooked in a non-driven state and capable of being positioned as shown in the first aspect of the patent application, wherein the swinging member has a pivot hole at the center for the pivot shaft to pass through, and one end is pivoted thereto. a hook arm is disposed on the other end of the swinging member with a bolt, and the swinging disc is provided with the stopping portion and the through hole. The center of the swinging disc has a through hole for the pivoting, and the swinging disc An elongated adjustment hole is formed through the bolt, so that the angle at which the swash plate is located can be adjusted and positioned. A sewing machine structure having a drive selection device in which the upper ring is hooked to a drive position that can be surely positioned, as shown in the first aspect of the patent application, wherein the outer ring of the movable member is provided with a groove-shaped urging portion for the cymbal The moving rod protrudes, and a moving shaft is protruded from a side of the moving member, and the through shaft portion extends the through shaft to the driving member. A sewing machine structure having a drive selection device in which the upper ring is hooked to a drive position that can be reliably positioned, as shown in the first aspect of the patent application, wherein the trigger member is moved and the top portion is moved away from the card portion When moving, the swaying end of the swaying member is pulled by the elastic member, so that the moving member abuts against the driving member, and the threading shaft on the moving member has a pre-stress to the oscillating member, and the driving shaft rotates In the driving member, the through sleeve portion is aligned with the hole of the swinging member, and the through shaft can penetrate into the through hole to drive the swinging member and the hook arm, and the driving selection device is in a driving state.