TWM575815U - Circuit breaker device for sewing machine - Google Patents

Abstract

A sewing machine power-off device comprises: a positioning plate; a positioning shaft, one end of which is fixed to the positioning plate; at least one wire device, one end of which is pivotally connected to the positioning shaft, and the other end of the wire Having at least one threading hole; an upper ram, one end of which is fixed to the positioning plate; a lower power-breaking rod, one end of which is fixed to the positioning plate; and a conductive wiring group including first and second conductive wires, The first conductive wiring system is connected to the positioning shaft, and the second conductive wiring system is connected to the lower power-off pole; the line-passing device is operated between the upper ejector rod and the lower power-off pole, so that When the sewing thread is broken, the power-off and shutdown operations can be started immediately, and the power-off operation process is quite reliable and extremely stable, thereby ensuring the safety of the sewing machine sewing operation and the economical operation of the material.

Description

Sewing machine power off device

The present invention relates to a power-off device, and more particularly to a sewing machine power-off device that is used in combination with a sewing machine to immediately start a power-off or stop operation when the sewing thread is broken.

With the advancement of the times, modern sewing clothes are often carried out using a power controlled sewing machine. Since the sewing machine may encounter wire breakage during sewing of the machine, when the sewing machine is broken, it may cause damage to the relevant parts of the machine and the occurrence of defective clothing. Therefore, it is necessary to design the automatic power-off mechanism when the wire is broken. In order to make the sewing machine stop power in time, stop the operation, and then resume the normal connection by eliminating and repairing. For example, in the sewing industry of zipper strips, the zipper strips sew the zipper teeth on a cloth belt through a sewing machine. Due to the sewing process of the automatic sewing machine, the stitching operation of the zipper teeth and the cloth belt advances at a relatively high speed, and when the sewing machine is broken If the wire is not powered off in time to stop the sewing operation, a few meters long zipper strip defective product will be produced within a few minutes, which will cause considerable material loss.

The prior art sewing machine power-off technique, as shown in Figures 1 and 2A and 2B, includes a sewing machine 90 which is provided with two sets of power-off units 91 and 92, and the power-off units 91 and 92 are provided. The ejector unit 911, 921 and the screw member 97 are respectively fixed on the sewing machine 90. The power-off unit 91 (the same as the power-off unit 92) includes a housing 93. The housing 93 is provided with a set of supporting units 96 and A plurality of wire rods 94 are inserted into the support unit 96. The wire rods 94 have a bent end portion 941, and a metal member (conductive sheet) is disposed under the support unit 96. Thus, the sewing thread 100 is subjected to the sewing operation by the bent end portion 941 of the power-off units 91, 92, and when the sewing thread 100 is broken, the cable lever 94 loses the support of the sewing thread 100 and descends, and contacts the metal member. (Conductive sheet) Stops the sewing machine by cutting off the power supply, thereby saving power and avoiding the damage caused by the abnormal operation of the relevant sewing operation components and the occurrence of defective products due to the continuous driving inside the machine.

The above-mentioned conventional sewing machine power-off technology can achieve its intended purpose, but there is still a defect thereof. For example, since the sewing thread 100 passes through the bent end portion 941 of the power-off unit 91, 92, it is extremely easy to The sewing thread 100 is rubbed against the contact of the bent end portion 941 to cause the swarf to fall, and the continuous danderfall will accumulate at the perforation of the support unit 96 to form a swarf layer 961, which will hinder the pulling. The wire rod 94 has a smooth displacement of the perforation relative to the support unit 96. Therefore, when the sewing thread 100 is broken, the wire rod 94 is originally lowered due to the loss of the support of the sewing thread 100, but the padding 961 is pierced by the chip layer 961. Obstruction causes the lowering of the pull rod 94 to become unsmooth, and even causes jamming and cannot be lowered to be powered off, which will cause the power-off unit 91, 92 to lose its power-off function, which is a non-ideal design. Therefore, how to design and solve the above-mentioned missing problems, and make the sewing machine power off constitutes the normality of its operation at any time, and it is the key direction that the industry should further develop and break through.

Therefore, the creator of this creator has developed and conceived a solution in view of the fact that the sewing machine power-off technology constitutes a lack of its use and its structural design is not ideal. The sewing machine power-off device with smoothness, convenience and safety of discoloration stability serves the public and promotes the development of this industry.

The purpose of the present invention is to provide a sewing machine power-off device which can immediately start the power-off and stop operation when the sewing thread is broken, and the power-off operation process is quite reliable and extremely stable, thereby ensuring the sewing machine sewing operation. The safety and the economics of the normal operation of the materials.

A further object of the present invention is to provide a sewing machine power-off device which can make the sewing thread have tension control and can tighten the sewing thread without being broken, thereby actively improving the stability and yield of the sewing clothes, the zipper tape, and the like. By.

The technical means for achieving the above purpose and effect is that the power-off device comprises: a positioning plate; a positioning shaft, one end of which is fixed to the positioning plate; at least one wire connector, one end of which is pivotally connected to The positioning shaft has at least one threading hole at the other end of the wire rod; one upper ram is fixed at one end of the positioning rod; the lower power pole is fixed at one end of the positioning plate; The first conductive wiring is connected to the positioning shaft, the second conductive wiring is connected to the lower power-off pole; the foregoing structure, the line-connecting system It is operated between the upper ram and the lower power pole.

The wire traversing device forms a pivoting portion and a crossing portion by a bent portion, and the pivoting portion is disposed perpendicular to the plate surface.

The horizontal position of the upper ram is higher than the horizontal position of the lower power-off lever, and the horizontal position of the lower power-off lever is higher than the horizontal position of the positioning shaft.

The longitudinal position of the upper ram is between the positioning shaft and the longitudinal position of the lower power-off lever.

The first conductive connection and the second conductive connection are hidden behind the positioning plate.

The horizontal position of the upper ram is higher than the horizontal position of the positioning shaft, and the horizontal position of the lower power rod is higher than the horizontal position of the positioning shaft.

The longitudinal position of the upper ram is between the positioning shaft and the longitudinal position of the lower power-off lever.

The power-off device is fixed on a sewing machine by the positioning plate.

The power-off device further includes at least one sewing thread, the sewing thread is threaded through the threading hole of the threader, and the threader is operated by the top of the sewing thread to be located on the upper ram and the threading device The power is disconnected between the poles, and the sewing thread has excellent tension control and is not easily broken.

When the sewing thread is broken, the wire feeder is dropped, the wire feeder is in contact with the lower power-off bar, and the first conductive wire and the second conductive wire are electrically connected to generate a power-off operation and stop. .

The lower power-off lever is magnetized for being able to suck the cord and quickly energize the power to shut down the sewing machine.

In order to gain a better understanding and understanding of the technical features of the creation and the efficacies achieved, please refer to the preferred embodiment diagram and the detailed description to illustrate the following:

Please refer to FIGS. 3A, 3B to 5 for explaining the overall configuration of the power-off device for the sewing machine of the present invention. First, as shown in FIG. 5, the present invention is provided with a power-off device on a sewing machine 30, which is powered off. The device may include a first power-off device 10 and a second power-off device 20 (which may be generally referred to as a power-off device), and the first power-off device 10 and the second power-off device 20 are equivalent in composition, and They are respectively disposed above and below the sewing machine 30 for power-off operation during transmission and disconnection, which will be described below.

As shown in FIG. 3A and FIG. 4A , the first power-off device 10 includes a positioning plate 11 , and a positioning shaft 13 , an upper ram 14 and a lower power-off lever 15 are disposed on the positioning plate 11 . There are three positioning holes 111, 112, 113 and two fixing holes 114, and the positioning shaft 13, the upper ram 14 and the lower power-off lever 15 are respectively located at positions where the positioning plate 11 is not overlapped; the plurality of wires 12 are In this embodiment, there are four wire traversing devices 12, which are formed by a bending portion 120 to form a pivoting portion 121 and a crossing portion 123. The pivoting portion 121 and the crossing portion 123 The pivoting portion 121 is provided with a pivot hole 122. The wire passing portion 123 is provided with a plurality of threading holes 124. In the embodiment, four threading holes 124 are included.

The positioning shaft 13 includes a screw end 131 of the inner end and a limiting end 132 of the outer end. The positioning shaft 13 passes through the pivot hole 122 of the wire traversing device 12 and snails the screw end 131 thereof. The locating hole 111 is fixed to the locating hole 111 of the locating plate 11 , and the locating shaft 13 is sleeved with a plurality of ring sleeves 16 and a fastening screw set 17 . The ring sleeve 16 is disposed on two sides of the pivoting portion 121 and used for The two threaders 12 are separated and positioned at a distance therebetween. The fastening screw set 17 includes a nut and a spacer for being properly fixed at the screw end 131 of the positioning shaft 13.

The upper ram 14 includes a screw end 141 of the inner end and a limiting end 142 of the outer end. The screw end 141 of the upper ram 14 is screwed to the positioning hole 112 of the positioning plate 11, and the upper ram 14 The upper sleeve is provided with the fastening screw set 17 for properly fixing the upper ram 14 .

The lower power-off pole 15 includes a screw end 151 of the inner end and a limit end 152 of the outer end. The screw end 151 of the lower power-off pole 15 is screwed to the positioning hole 113 of the positioning plate 11, and the lower end is broken. The fastening rod 17 is sleeved on the pole 15 for appropriately fixing the lower power-off lever 15.

The first power-off device 10 further has a conductive wiring assembly, including a first conductive connection 18 and a second conductive connection 19, the first conductive connection 18 is connected to the positioning shaft 13 (the screw end 131), the first The second conductive wire 19 is connected to the lower power-off pole 15 (the screw end 151), and the first conductive wire 18 and the second conductive wire 19 are usually hidden behind the positioning plate 11.

In the configuration of the first power-off device 10, after the pivoting portion 121 of the wire-passing device 12 is pivotally connected to the positioning shaft 13, the wire-passing portion 123 of the wire-passing device 12 is attached to the upper ram 14 The lower power-off poles 15 extend to one side, that is, the wire-passing device 12 is located between the upper ram 14 and the lower power-off pole 15; in this embodiment, the horizontal position of the upper ram 14 is high. The horizontal position of the lower power-off pole 15 is higher than the horizontal position of the positioning shaft 13; and the longitudinal position of the upper pole 14 is located at the positioning shaft 13 The lower power pole 15 is between the longitudinal positions.

As shown in FIG. 3B and FIG. 4B, the second power-off device 20 includes a positioning plate 21. The positioning plate 21 is provided with a positioning shaft 23, an upper ram 24 and a lower power-off lever 25, and three positioning holes are provided. 211, 212, 213 and a fixing hole 214, and the positioning shaft 23, the upper ram 24 and the lower power-off lever 25 are respectively located at positions where the positioning plate 21 is not overlapped; the plurality of wire aligners 22, in this embodiment The middle line includes two wire traversing devices 22, and the wire traversing portion 22 forms a pivoting portion 221 and a wire passing portion 223. The pivoting portion 221 and the wire passing portion 223 are slightly plated. The composition of the face is vertical. The pivoting portion 221 is provided with a pivot hole 222. The wire passing portion 223 is provided with a plurality of threading holes 224. In the embodiment, four threading holes 224 are included.

The positioning shaft 23 includes a screw end 231 having an inner end and a limiting end 232 of the outer end. The positioning shaft 23 passes through the pivot hole 222 of the wire traversing device 22, and the screw end 231 is screwed. The locating hole 211 is fixed to the locating hole 211 of the locating plate 21, and the locating shaft 23 is sleeved with a plurality of ring sleeves 26 and a fastening screw set 27, and the ring sleeve 26 is disposed on two sides of the pivoting portion 221 for The two wire cleavers 22 are separated and positioned at a distance therebetween. The fastening screw set 27 includes a nut and a spacer for fixing to the screw end 231 of the positioning shaft 23.

The upper ram 24 includes a screw end 241 of the inner end and a limiting end 242 of the outer end. The screw end 241 of the upper ram 24 is screwed to the positioning hole 212 of the positioning plate 21, and the upper ram 24 The upper sleeve is provided with the fastening screw set 27 for properly fixing the upper ram 24 .

The lower power-off pole 25 includes a screw end 251 having an inner end and a limit end 252 of the outer end. The screw end 251 of the lower power-off lever 25 is screwed to the positioning hole 213 of the positioning plate 21, and the lower end is broken. The fastening rod 27 is sleeved on the pole 25 for appropriately fixing the lower power-off lever 25.

The second power-off device 20 further has a conductive wiring group, including a first conductive wire 28 and a second conductive wire 29, the first conductive wire 28 is connected to the positioning shaft 23 (screw end 231), the first The second conductive connection 29 is connected to the lower power-off lever 25 (the screw end 251), and the first conductive connection 28 and the second conductive connection 29 are hidden behind the positioning plate 21.

In the configuration of the second power-off device 20, the pivoting portion 221 of the wire-passing device 22 is pivotally connected to the positioning shaft 23, and the wire-passing portion 223 of the wire-passing device 22 is attached to the upper ram 24 The lower power-off lever 25 extends to one side, that is, the wire-passer 22 is located between the upper ram 24 and the lower power-off lever 25; in the embodiment, the horizontal position of the upper ram 24 is high. In the horizontal position of the positioning shaft 23, and the horizontal position of the lower power-off lever 25 is higher than the horizontal position of the positioning shaft 23; and the longitudinal position of the upper plunger 24 is located at the positioning shaft 23 and the The longitudinal position of the lower power pole 25 is between.

As shown in FIG. 5, the sewing machine 30 is provided with an upper fixing hole 311, a lower fixing hole 312 and a plurality of wire passing wheels 32, wherein the first power-off device 10 is fixed by the fixing hole 114 of the positioning plate 11 The screw 302 is fixed to the fixing hole 312 of the sewing machine 30, and the second power-off device 20 is fixed to the fixing hole 311 of the sewing machine 30 by the fixing hole 214 of the positioning plate 21, that is, the screw 301 is fixed. The first power-off device 10 and the second power-off device 20 are assembled.

Please refer to Figures 6A and 6B for explaining the state of the set sewing thread set of the sewing machine power-off device. As shown in FIGS. 6A, 8A and 9A, 10A, the sewing thread set includes a first sewing thread set 41 and a second sewing thread set 42, the first sewing thread set 41 including four sewing threads 411, 412, 413, 414, the sewing threads 411, 412, 413, and 414 are respectively threaded through any of the threading holes of each of the threaders 12 (in the figure, the first threading holes 124 through which the four wires respectively pass through the threader 12 are taken as an example. At this time, the threader 12 is operated between the upper ram 14 and the lower power-off lever 15 by the struts of the sewing thread, and the sewing threads 411, 412, 413, 414 are excellent. Tension control and tightening the sewing thread without breaking the wire.

As shown in FIGS. 6B, 8B, and 9B and 10B, the second sewing thread set 42 includes two sewing threads 421 and 422 which are respectively disposed on the respective threaders 22. The threading hole (illustrated by taking the first threading hole 224 of each of the two wires passing through the threader 22 as an example), at this time, the threader 22 is operated by the top of the sewing thread and is located on the upper ram 24 Between the lower power-off levers 25, the sewing threads 421, 422 can also have excellent tension control, and the sewing thread can be tightened without being broken.

Please refer to Figures 7A, 7B and 11A, 11B for explaining the disconnection power-off state of the sewing machine power-off device of the present sewing machine; as shown in Figures 7A and 11A, when the sewing threads 411, 412, 413, 414 occur In the case of the disconnection phenomenon, the broken line in the figure is the sewing thread 414, so that the corresponding threader 12 can not be supported by the sewing thread 414 and falls, and the dropped threader 12 will contact the lower power pole. The first conductive wire 18 is guided by the positioning shaft 13 through the positioning shaft 13 , and the lower power disconnecting rod 15 is connected to the second conductive wire 19 , so that the first conductive wire 18 is caused. And the second conductive connection 19 is electrically conducted to generate a power-off operation and issue a warning (light or sound). At the same time as the disconnection occurs, the upper ejector 14 can be used to prevent the traversing device 12 from moving in the opposite direction of the lower power-off lever 15 to facilitate contact between the wire keeper 12 and the lower power-off lever 15.

As shown in Figs. 7B and 11B, when the sewing thread 421, 422 is broken, the broken line in the drawing is the sewing thread 422, so that the corresponding threader 22 cannot obtain the support of the sewing thread 422. And falling, at this time, the dropped wire 22 will contact the lower power-off lever 25, and the wire-breaker 22 leads the first conductive wire 28 through the positioning shaft 23, and the lower power-off bar The 25 series leads the second conductive connection 29, which will electrically conduct the first conductive connection 28 and the second conductive connection 29 to generate a power-off operation and issue a warning (light or sound). At the same time as the disconnection occurs, the upper ram 24 prevents the wire traverse 22 from moving in the opposite direction of the lower power-off lever 25 to facilitate contact of the wire cleaver 22 with the lower power-off lever 25.

The wire feeder 12 (22) has a considerable weight such that when the wire is broken, the end of the wire rod 13 (23) is pivoted to be quickly lowered to turn on the first conductive wire 18 (28) and the first The second conductive wire 19 (29) is rapidly generated by the power-off effect of the sewing machine 30; in a preferred embodiment, the lower power-off lever 15 (25) is magnetized, and the specific implementation can limit the limit The bit end 152 (252) is provided with a magnetized screw for sucking the wire feeder 12 (22), and can be energized quickly to stop the sewing machine 30.

Please refer to Figures 12 and 13 for explaining the sewing operation state of the sewing machine power-off device of the present sewing machine; the sewing thread of the first sewing thread group 41 passes through the wire-passing wheel 32, the wire-passing device 12, and the relay. The mechanism group 36 reaches the sewing needle 34, and the sewing threads of the second sewing thread set 42 pass through the winding wheel 32, the threader 22, and the relay mechanism group 37 to the sewing table 35, and then the zipper can be performed. The sewing operation of the tooth 50 and the tape 51, and the sewing of the fastener element 50 and the tape 51 is only an example, and the object to be sewn may be used, and is not limited thereto. The first power-off device 10 or the second power-off device 20 checks whether the first sewing thread group 41 or the second sewing thread group 42 is disconnected, so as to achieve a safe operation for stopping the sewing machine 30 in time.

The sewing machine power-off device of the present sewing machine can automatically start the power-off and stop operation when the sewing thread is disconnected, and the power-off operation process is quite reliable and stable, thereby ensuring the safety of the sewing machine sewing operation and The material is economical in normal operation; at the same time, the creation can make the sewing thread have tension control, and can make the sewing thread tight and not easy to break, thereby actively improving the stability and yield of the sewing clothes and the zipper belt.

In summary, the creation can be a very good idea, and the patent application is filed according to law; however, the content of the above description is only a description of the preferred embodiment of the creation, and is extended by the technical means of the creation. The changes should be included in the scope of the patent application of this creation, which is hereby stated.

10‧‧‧First power-off device

11‧‧‧ Positioning board

111‧‧‧Positioning holes

112‧‧‧Positioning holes

113‧‧‧Positioning holes

114‧‧‧Fixed holes

12‧‧‧Cables

120‧‧‧Bends

121‧‧‧ pivotal department

122‧‧‧ pivot hole

123‧‧‧The Department of Crossing

124‧‧‧Threading hole

13‧‧‧ Positioning shaft

131‧‧‧ screw end

132‧‧‧limit end

14‧‧‧Upper pole

141‧‧‧ screw end

142‧‧‧Limited end

15‧‧‧Power off pole

151‧‧‧ screw end

152‧‧‧Limited end

16‧‧‧环套套

17‧‧‧ fastening screw group

18‧‧‧First conductive wiring

19‧‧‧Second conductive wiring

20‧‧‧Second power-off device

21‧‧‧ Positioning board

211‧‧‧Positioning holes

212‧‧‧Positioning holes

213‧‧‧Positioning holes

214‧‧‧Fixed holes

22‧‧‧Cables

220‧‧‧Bending

221‧‧‧ pivotal department

222‧‧‧ pivot hole

223‧‧‧Through the line

224‧‧‧ threading hole

23‧‧‧ Positioning shaft

231‧‧‧ screw end

232‧‧‧limit end

24‧‧‧Upper pole

241‧‧‧ screw end

242‧‧‧Limited end

25‧‧‧Power off pole

251‧‧‧ screw end

252‧‧‧Limited end

26‧‧‧ 环套

27‧‧‧ fastening screw group

28‧‧‧First conductive wiring

29‧‧‧Second conductive wiring

30‧‧‧Sewing machine

301‧‧‧ screw

302‧‧‧ screw

311‧‧‧Fixed holes

312‧‧‧Fixed holes

32‧‧‧Crossing wheel

34‧‧‧needle

35‧‧‧Sewing table

36‧‧‧Transfer organization group

37‧‧‧Transfer organization group

41‧‧‧First sewing thread set

411‧‧‧Sewing thread

412‧‧‧Sewing thread

413‧‧‧Sewing thread

414‧‧‧Sewing thread

42‧‧‧Second sewing thread set

421‧‧‧Sewing thread

422‧‧‧Sewing thread

50‧‧‧ zipper teeth

51‧‧‧ cloth belt

1 is a schematic perspective view showing the structure of a conventional sewing machine power-off technology; FIG. 2A is a front view showing the structure of a conventional sewing machine power-off technology; FIG. 2B is a front view showing a broken state of a conventional sewing machine power-off technology; The schematic diagram of the structure of the first power-off device for the creation; FIG. 3B is a schematic structural view of the second power-off device of the creation; FIG. 4A is a schematic exploded view of the first power-off device of the creation; Schematic diagram of the structure of the second power-off device; Figure 5 is a schematic diagram of most of the sewing machine of the present invention; Figure 6A is a schematic diagram of the winding of the first power-off device of the creation; Figure 6B is the second power-off of the creation Schematic diagram of device winding; Figure 7A is a schematic diagram of the disconnection of the first power-off device of the creation; Figure 7B is a schematic diagram of the disconnection of the second power-off device of the creation; Figure 8A is a perspective view of the first power-off device of the creation Figure 8B is a perspective view of the second power-off device of the present invention; Figure 9A is a schematic diagram of the operation of the first power-off device of the present invention (1); Figure 9B is a schematic diagram of the operation of the second power-off device of the present invention ( Figure 10A is a schematic diagram of the operation of the first power-off device of the creation (2); Figure 10B is a schematic diagram of the operation of the second power-off device of the creation (2); Figure 11A is the first power-off device of the creation Figure 11B is a schematic diagram of the second power-off device disconnection of the creation; Figure 12 is a partial assembly diagram of the sewing machine of the present invention; Figure 13 is a schematic view of the operation of the sewing machine of the present invention.

Claims (9)

A sewing machine power-off device for mounting on a sewing machine, the device comprising: a positioning plate, the positioning plate is provided with a positioning shaft, an upper rod and a lower power rod, the positioning shaft The rod, the upper rod and the lower power rod are respectively located at positions where the positioning plate is not overlapped; at least one wire rod has one end pivotally connected to the positioning shaft, and the other end of the line device is provided with at least a threading hole; a conductive wiring group comprising a first conductive wire and a second conductive wire, the first conductive wire is connected to the positioning shaft, and the second conductive wire is connected to the lower power bar; The threading hole is selectively slidable by a sewing thread. After the threading is passed, the threader is supported by the sewing thread and is located between the upper ram and the lower power-off pole. The sewing machine power-off device of claim 1, wherein the wire-receiving device forms a pivoting portion and a crossing portion by a bent portion, the pivoting portion and the crossing portion being perpendicular to the plate surface The setting. The sewing machine power-off device of claim 1, wherein the horizontal position of the upper ram is higher than the horizontal position of the lower power-off lever, and the horizontal position of the lower power-off lever is higher than the positioning shaft horizontal position. The sewing machine power-off device of claim 3, wherein the longitudinal position of the upper ram is between the positioning shaft and the longitudinal position of the lower power-off lever. The sewing machine power-off device of claim 1, wherein the first conductive wire and the second conductive wire are hidden behind the positioning plate. The sewing machine power-off device of claim 1, wherein a horizontal position of the upper ram is higher than a horizontal position of the positioning shaft, and a horizontal position of the lower power-off lever is higher than a level of the positioning shaft position. The sewing machine power-off device of claim 6, wherein the longitudinal position of the upper ram is between the positioning shaft and the longitudinal position of the lower power-off lever. The sewing machine power-off device of claim 1, wherein the sewing thread is disconnected, the wire feeder is dropped, the wire feeder is in contact with the lower power-off lever, and the first conductive wire and the first wire are The second conductive wiring is electrically connected to generate a power-off operation and is stopped. For example, the sewing machine power-off device of claim 8 wherein the lower power-off lever is magnetized for quickly sucking the wire feeder and energizing the sewing machine to stop the power.