TWI794419B - Positioning device for a movable tongue seat with rotating motion - Google Patents

Abstract

A positioning device for a movable tongue seat with rotating motion, a pivot rod, a pivot hole and a positioning member are arranged between a movable tongue seat and a tool holder driving the movable tongue seat to rotate the positioning member, so as to move the movable tongue seat to the corresponding position, such that a movable tongue on the movable tongue seat can be retracted from the top of the tool holder in the best position and can be effectively controlled.

Description

The positioning device of the movable tongue seat by rotating and interlocking

The invention relates to a positioning adjustment structure of a movable tongue seat in a sewing machine, in particular to a positioning device for a movable tongue that is linked by rotation.

It is known that a movable tongue piece that can slide on the movable tongue piece seat is configured on the movable tongue piece seat on the sewing machine cutter seat, and this structure can be like my country's patent No. I363822 case, and it is in the movable tongue piece seat and There is also an adjustable wire slider adjustment device between the movable tongue parts. It can be seen from the contents of the manual that the adjustment device is mainly fixed on the movable tongue (wire slider) when the fine adjustment rod is rotated. The tongue (wire slider) adjusts the rotational movement of the eccentric cam and links the link member. Since one end of the link member is coupled to the eccentric area of the eccentric cam, it will move almost along the Y-axis direction. Correspondingly, at the other end of the link member, the movable tongue (wire slider) swing groove cam is pivotally arranged on an elongated hole and is given a rotational movement by the pin engaged with the upper recess, so that It is pivotable about an axis parallel to the X-axis. By the rotational movement of the swinging groove cam of the movable tongue (wire slider), the engaging convex part in the groove cam formed on the circumferential surface of the swinging groove cam of the movable tongue (wire slider) will move laterally. Move, that is, in the X-axis direction. Around the movable tongue seat (swing piece) one end is oscillably fixed by the pin member, and the other end will swing almost along the X-axis direction; the interlocking process and the components must be driven by two sets of parallel cams and an eccentric wheel The structure of a connecting rod can only be achieved. The overall structure is too complicated and its multi-axial movement conversion must be completed with extremely high precision. When the overall structure is used for a period of time, it will be affected by the wear and tear of the components. The accuracy of the fit between the components drives the movable tongue and the movable tongue seat to the most correct position, so that the movable tongue seat cannot guide the sliding stroke of the movable tongue at the best start In terms of price, there is a need for improvement.

In the description of the aforementioned case, it is mentioned in Japanese Patent Application No. 2005-401 and Special Application No. 2003-167272 that the adjustment structure related to the position of the movable tongue seat is that the rotation of a fine adjustment rod drives an eccentric cam to drive a linkage part, so that the linkage part moves laterally, and at the same time the pivot point of the linkage part is displaced laterally, and drives the tail end of the movable tongue to deviate, but the movable tongue seat that guides the movable tongue does not deviate accordingly, so that The movement of the movable tongue is not completely against the guide, and its guiding effect is not good and it is in an unstable state, and because there will be a lack of mutual interference between the movable tongue seat and the knife seat, so there is the aforementioned structure However, as mentioned above, its structure is too complex and requires high precision, and after a period of use, there will be irreparable clearance due to wear and tear, resulting in the problem of inaccurate adjustment, so both have improved necessary.

The present invention provides a positioning device with a rotating and linked movable tongue seat. Its main purpose is to achieve a definite and stable adjustment result with a simple structural configuration, low cost, and the function of driving reliable and high-efficiency operations.

In order to achieve the aforementioned purpose, in the first embodiment of the present invention, the movable tongue seat is positioned on the knife seat of a sewing machine, a movable tongue is provided on the movable tongue seat, and the positioning structure of the movable tongue seat It includes: a positioning piece arranged between the movable tongue piece seat and the knife seat, the positioning piece is provided with a rotating end relative to the knife seat end, the positioning piece rotates on the rotating end as an axis, and the positioning piece is relatively to the knife seat. movable tongue A driving part is provided at the end of the part seat to contact with a driving part of the movable tongue part seat to generate friction and drive it. The driving part and the rotating end are set at the same axis; There is also a pivot hole and a pivot post in the knife seat, so that the movable tongue seat can be rotated on the knife seat with the pivot post, and the positioning part can be rotated around the rotating end, and driven by the driving part. The movable tongue seat rotates around the pivot to a position to be adjusted.

In addition, in the second embodiment of the present invention, the movable tongue seat is positioned on the knife seat of a sewing machine, a movable tongue is provided on the movable tongue seat, and the positioning structure of the movable tongue seat includes: A positioning piece arranged between the movable tongue piece seat and the knife seat, the positioning piece is provided with a rotating end relative to the knife seat end, the positioning piece rotates with the rotating end as the axis, and the positioning piece is opposite to the movable tongue piece There is a driving part at the end of the seat, and the driving part has a plurality of teeth, and these teeth mesh with the corresponding teeth of one of the driving parts of the movable tongue part and drive it. The driving part and the rotating end are set at the same axis. ; and between the movable tongue seat and the knife seat, there is also a pivot hole and a pivot post with a concave-convex fit, so that the movable tongue seat can be rotated on the knife seat with the pivot post, and the positioning member can use the rotating end as the The shaft rotates, and the driving part drives the movable tongue seat to rotate to the position to be adjusted centering on the pivot.

From the foregoing, it can be seen that no matter whether the driving part and the driving part are through contact friction or gear meshing, the positioning part can be rotated around the rotating end as the axis, and the driving part can drive the movable tongue. The seat rotates around the pivot to the desired adjustment position, and then achieves a definite and stable adjustment result, low cost, and drives the function of reliable and high-efficiency operation.

Please refer to Figures 1 to 6 for the first embodiment of the positioning device of the present invention that rotates and moves the movable tongue seat, wherein, a knife seat 10 on a sewing machine is provided with a movable tongue seat 20, and the movable tongue A movable tongue 30 is provided on the seat 20, and the movable tongue 30 has a tongue end 31, a guide portion 32 extending from the tongue end 31, and a pulling end 33 perpendicular to the guide portion 32. The movable tongue piece seat 20 has a groove-shaped guide portion 23 for the guide portion 32 to guide and slide therein, and a groove 24 is provided on the side of the guide portion 23 for the pulling end 33 to protrude. And the positioning structure of the movable tongue piece seat 20 includes: a positioning piece 40, the positioning piece 40 is arranged between the movable tongue piece piece seat 20 and the knife seat 10, and the positioning piece 40 is arranged at the end of the knife seat 10. There is a cylindrical rotating end 41, and the positioning member 40 rotates around the rotating end 41. The positioning member 40 is provided with a cylindrical driving member relative to the end of the movable tongue seat 20 42, to contact and drive it with one of the driving parts 22 of the movable tongue seat 20, the driving part 42 and the rotating end 41 are located at the same axis, so that when the positioning part 40 is rotated, the driving Part 42 rotates at the same time to definitely drive the movable tongue part seat 20 to deviate by contacting the driving part 42 with the driving part 22; The disc-shaped damping part 43 at the center of the rotating end 41 provides the angle at which the locating part 40 is positioned in order to provide damping for other components; and a pulling part 44 extends from one side of the damping part 43; and the movable tongue seat 20 There is also a pivot hole 110 and a pivot post 21 that fits with the knife seat 10, so that the movable tongue seat 20 can be rotated on the knife seat 10 by the pivot post 21. It rotates as an axis, and drives the movable tongue seat 20 to rotate around the pivot 21 to the position to be adjusted with the coaxial driving member 42; The limiting portion 25 cooperates with the pulling portion 44 of the positioning member 40 to limit the angle of rotation of the positioning member 40; as can be seen from the illustration, the top of the knife seat 10 has a first end surface 11 and a second end surface 12 with a height difference, wherein, The first end surface 11 is higher than the second end surface 12, and the pivot hole 110 is provided on the first end surface 11 for the pivot post 21 protruding from the bottom of the movable tongue seat 20, and on the first end surface of the knife seat 10 11 is provided with a blade 70 on one side, and a pressing member 50 is provided on the other side of the knife holder 10; the second end surface 12 has a hole 120, and the rotating end 41 is arranged on the second end surface 12 of the knife holder 10 The pressing member 50 is fixed on the knife seat 10. As shown in this illustration, the pressing member 50 is arranged on the side different from the blade 70, and passes through two fixing bolts 51. The vertical end of the pressing member 50 is locked on the knife seat 10, and the pressing member 50 is an elastic structure bent into an inverted L-shaped section, wherein the vertical end of the pressing member 50 forms a A positioning portion 52, the positioning portion has two perforations 520 for the fixing bolt 51 to pass through and be fixed on the knife seat 10, the pressing member 50 extends horizontally from the top of the positioning portion 52 to the movable tongue seat 20, and a limiting top 53 , and restrict the movable tongue 30 in the movable tongue seat 20 with the limiting top 53, and The two ends of the restricting top 53 are bent toward the movable tongue 30 to form a pressing end 531 to elastically suppress the movable tongue 30 in the movable tongue seat 20, and the pressing member 50 is further supported by the positioning part. 52 extends horizontally with an elastic resilient portion 54 to cooperate with the elastic resistance of the damping portion 43 of the positioning member 40 to form damping; the braking of the movable tongue 30 of the present invention is shown in Figures 5 and 6 , by pushing the pulling part 33 of the movable tongue 30 from the end of the groove 24 to the initial end, the tongue end 31 of the movable tongue 30 is stretched out, and the opposite is shown in Figure 5 , the tongue end 31 becomes a contracted form; and the action of the characteristic structure of the present invention is shown in Figures 7 to 8, when the position of the movable tongue 30 protruding from the tongue end 31 deviates, as shown in Figure 7, the positioning member is defined When the pulling part 44 of 40 is located in the middle of the two limiting parts 25, it is the origin PO, the left limiting part 25 viewed from above is the left point PL, and the right limiting part 25 viewed from above is the right point PL, corresponding to the tongue end The position of 31 is also relative to the origin PO1, the left point is PL1, and the right point is PR1. As shown in FIG. The side wall of the movable tongue part drives the movable tongue part seat 20 to rotate around the pivot post 21, so that the tongue end 31 of the movable tongue part 30 is shifted to the right point PR1, as shown in Figure 7, and its pulling part 44 is tied to the left At point PL, the tongue end 31 of the movable tongue 30 is shifted to the left point PL1, and the direction and position of the tongue end 31 can be intuitively and quickly controlled by simply pulling the trigger part 44 .

Such a structure has the following advantages: simple structure: a single positioning piece 40 is arranged between the movable tongue piece seat 20 and the knife seat 10, and the driving part 42 of the positioning piece 40 and the driving part 22 The control and adjustment of the offset position of the movable tongue seat 20 can be achieved by the friction generated by the contact without interlocking through other structures, the installation is easy, and the costs of components, assembly and maintenance are all low.

Furthermore, the driving part 42 is a columnar body, and the driving part 42 has a plurality of teeth 421 on the outside. Therefore, to describe more specifically, the driving part can be a gear, and the driving part 22 is a rack. The portion 22 has a plurality of corresponding teeth 221, and the corresponding teeth 221 mesh with the teeth 421 of the driving member, so that when the driving member 42 rotates, the teeth 421 of the driving member 42 mesh with the corresponding teeth 221 to provide the movable tongue. Seat 20 kinetic energy offsets.

In the second embodiment of the present invention, the driving member 42 has a peripheral surface 422, and the driving part 22 has a friction surface 222. The peripheral surface 422 is attached and pressed against the friction surface 222. The peripheral surface 422 or the The friction surface 222 is made of a material capable of generating friction, such as rubber, so that when the driver 42 rotates, the peripheral surface 422 of the driver 42 presses against the friction surface 222 to provide the movable tongue seat 20 kinetic offset.

Preferably, the driving member 42 is a cylinder, the peripheral surface 422 is the outer peripheral surface of the cylinder, and the friction surface 211 is arc-shaped.

Preferably, the movable tongue seat 20 has an opposite first side 20A and a second side 20B, the two limiting portions 25 and the letting groove 24 are located on the first side 20A, the first side 20A and the second side The extending direction between the two sides 20B is a pivoting direction, and the friction surface 211 has a component extending along the pivoting direction, which is enough to make the movable tongue seat 20 pivot.

10: Knife seat 11: The first end face 12: Second end face 110: pivot hole 120: seat hole 20: Movable tongue seat 20A: First side 20B: Second side 21: Pivot 22: Drive Department 221: Corresponding teeth 222: friction surface 23: Guide Department 24: let slot 25: limited department 30: Movable tongue piece 31: Tongue end 32: Guide Department 33: Pull end 40: Positioning piece 41: rotating end 42: Driver 421: teeth 422: week surface 43: Damping part 44: Pulling part 50: Pressing parts 51: fixed bolt 52: Positioning Department 520: perforation 53: limit top 531: Suppression end 54: Bouncing part 70: blade PO: origin PL, PL1: left point PL, PR1: right point

Fig. 1 is a combined schematic diagram of the first embodiment of the positioning device for the rotating and interlocking movable tongue seat in this case.

Fig. 2 is an exploded view of the first embodiment of the positioning device for the rotating and interlocking movable tongue seat in this case.

Fig. 3 is a side view of the first embodiment of the positioning device for the rotating and interlocking movable tongue seat in this case.

Fig. 4 is a cross-sectional view of the first embodiment of the positioning device for the rotating and interlocking movable tongue seat in this case.

Fig. 5 is a top view plan action diagram of the positioning device for the rotating and interlocking movable tongue seat at the beginning of the stroke of the movable tongue seat in this case.

Fig. 6 is a top plan view at the end of the travel of the movable tongue seat with the positioning device of the rotating and interlocking movable tongue seat in this case.

Fig. 7 is a schematic top plan view of the pull part of the positioning device for the rotating and interlocking movable tongue seat in the first adjustment position in this case.

Fig. 8 is a schematic top plan view of the triggering part of the positioning device for rotating and interlocking the movable tongue seat in the second position for adjustment in this case.

Fig. 9 is an exploded view of the second embodiment of the positioning device for the rotating and interlocking movable tongue seat in this case.

10: Knife seat

11: The first end face

12: Second end face

110: pivot hole

120: seat hole

20: Movable tongue seat

21: Pivot

22: Drive Department

221: Corresponding teeth

24: let slot

25: limited department

30: Movable tongue piece

31: Tongue end

32: Guide Department

33: Pull end

40: Positioning piece

41: rotating end

42: Driver

421: teeth

43: Damping part

44: Pulling part

50: Pressing parts

51: fixed bolt

52: Positioning department

520: perforation

53: limit top

531: Suppression end

54: Bouncing part

70: blade

Claims (13)

A positioning device for a movable tongue seat (20) is positioned on a knife seat (10) of a sewing machine, and a movable tongue (20) is provided with a movable tongue ( 30), and the positioning structure of the movable tongue seat (20) includes: a positioning piece (40) located between the movable tongue piece seat (20) and the knife seat (10), the positioning piece (40) A rotating end (41) is provided relative to the end of the knife seat (10), and the positioning member (40) rotates on the rotating end (41) as an axis, and the positioning member (40) is opposite to the movable tongue seat (20) There is a driving part (42) at the end, and the driving part (42) has a plurality of teeth (421), and these teeth (421) are engaged with the corresponding teeth (221) of one driving part (22) of the movable tongue seat (20) And drive it, the driving part (42) and the rotating end (41) are located at the same axis; The hole (110) and the pivot (21) make the movable tongue seat (20) rotate on the knife seat (10) with the pivot (21), and the rotating end ( 41) rotates as a shaft, and drives the movable tongue seat (20) with the driver (42) to rotate to the position required to be adjusted centered on the pivot (21). As described in the first item of the scope of the patent application, the positioning device for the movable tongue seat by rotating and interlocking, wherein the top of the knife seat (10) has a first end surface (11) and a second end surface (12) with a height difference, wherein, The first end surface (11) is higher than the second end surface (12), and the pivot hole (110) is provided on the first end surface (11) to pass through the pivot post protruding from the bottom of the movable tongue seat (20) (21), and a blade (70) is provided at the side of the first end surface (11) of the knife seat (10). As described in the first item of the scope of the patent application, the positioning device for the movable tongue seat with rotation and interlocking movement, wherein, another pressing member (50) is fixed on the knife seat (10), and the pressing member (50) faces the knife seat (10). Movable tongue piece seat (20) extends a limit top (53), and limits this movable tongue piece (30) in this activity with this limit top (53). In the tongue piece seat (20), the pressing piece (50) further extends an elastic springing portion (54) to cooperate with the positioning piece (40) for elastic damping. As described in item 1 of the scope of the patent application, the positioning device for rotating the movable tongue seat, wherein, the positioning part (40) forms another one between the driving part (42) and the rotating end (41) to allow the rotating The damping part (43) at the center of the end (41) is used to cooperate with the resilient part (54) to elastically resist damping; a pulling part (44) extends from one side of the damping part (43). As described in the first item of the scope of the patent application, the positioning device for the movable tongue seat by rotating and interlocking, wherein the movable tongue (30) has a tongue end (31) and a guide extending along the tongue end (31). Guide part (32), a pulling end (33) perpendicular to the guide part (32), the movable tongue seat (20) has a groove-shaped guide part (23) for the guide part (32) guides and slides therein, and a groove (24) is provided on the side of the guide part (23) for the pulling end (33) to stretch out, and the side of the movable tongue seat (20) is in line with the The wrenching part (44) of the positioning piece (40) cooperates to limit the rotation angle of the positioning piece (40). According to the positioning device of the second item of the scope of the patent application, the positioning device of the movable tongue seat by rotating and interlocking, wherein, the rotating end (41) is arranged at the second end surface (12) of the knife seat (10). A positioning device for a movable tongue seat (20) is positioned on a knife seat (10) of a sewing machine, and a movable tongue (20) is provided with a movable tongue ( 30), and the positioning structure of the movable tongue seat (20) includes: a positioning piece (40) located between the movable tongue piece seat (20) and the knife seat (10), the positioning piece (40) A rotating end (41) is provided relative to the end of the knife seat (10), and the positioning member (40) rotates on the rotating end (41) as an axis, and the positioning member (40) is opposite to the movable tongue seat (20) A driving part (42) is provided at the end to contact with a driving part (22) of the movable tongue seat (20) to generate friction and drive it. The driving part (42) and the rotating end (41) are arranged at the same at the location of the axis; and A pivot hole (110) and a pivot post (21) with a concavo-convex fit are also provided between the movable tongue seat (20) and the knife seat (10), so that the movable tongue seat (20) is connected with the pivot post (21) Rotate on the knife seat (10), rotate with the rotating end (41) as the axis by the positioning part (40), and drive the movable tongue part seat (20) with the pivot post ( 21) Turn it as the center to the position to be adjusted. As described in the seventh item of the scope of the patent application, the positioning device for the movable tongue seat by rotating and interlocking, wherein the driving part (42) has a peripheral surface (422), and the driving part (22) has a friction surface (222). The peripheral surface (422) is attached and pressed against the friction surface (222). The positioning device for the movable tongue seat with rotation and interlocking movement as described in item 7 or 8 of the scope of the patent application, wherein, the top of the knife seat (10) has a first end surface (11) and a second end surface (12) with a height difference, Wherein, the first end surface (11) is higher than the second end surface (12), and the pivot hole (110) is provided on the first end surface (11) to pass through the bottom protruding from the movable tongue seat (20). A pivot column (21), and a blade (70) is arranged at the side of the first end face (11) of the knife seat (10). As the positioning device for the movable tongue seat with rotation and linkage as described in item 7 or 8 of the patent scope of the application, there is another pressing member (50) fixed on the knife seat (10), and the pressing member (50) Extend a restriction top (53) to this movable tongue piece seat (20), and limit this movable tongue piece (30) in this movable tongue piece seat (20) with this restriction top (53), this pressing part ( 50) In addition, an elastic spring-resisting portion (54) is extended to cooperate with the positioning member (40) for elastic damping. As described in item 10 of the scope of the patent application, the positioning device for rotating the movable tongue seat, wherein, the positioning part (40) forms another one between the driving part (42) and the rotating end (41) for the rotating The damping part (43) at the center of the end (41) is used to cooperate with the resilient part (54) to elastically resist damping; a pulling part (44) extends from one side of the damping part (43). As described in the eleventh item of the scope of the patent application, the positioning device for the movable tongue seat by rotating and interlocking, wherein the movable tongue (30) has a tongue end (31) and a guide extending along the tongue end (31). Guide part (32), a pulling end (33) perpendicular to the guide part (32), the movable tongue seat (20) has a groove-shaped guide part (23) for the guide part (32) guides and slides therein, and a groove (24) is provided on the side of the guide part (23) for the pulling end (33) to stretch out, and the side of the movable tongue seat (20) is in line with the The wrenching part (44) of the positioning piece (40) cooperates to limit the rotation angle of the positioning piece (40). As described in any one of the 7th to 8th items of the patent application scope, the positioning device for the movable tongue seat with rotation and linkage, wherein the rotating end (41) is set at the second end surface (12) of the knife seat (10) .

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