CN111118765A - Needle threading auxiliary device - Google Patents

Abstract

The invention discloses a needle threading auxiliary device, which comprises a shell assembly, a line pressing assembly and a threading assembly, wherein the line pressing assembly and the threading assembly are installed inside the shell assembly, the shell assembly comprises a base and a fixed cover which are installed in a combined mode, a long-strip-shaped line inlet is formed in the fixed cover, the line pressing assembly and the threading assembly correspond to the line inlet in position, the line pressing assembly is connected with the threading assembly, the line pressing assembly drives the threading assembly, a rope is placed into the line pressing assembly along the line inlet, a threading head of a thread needle is inserted into the line pressing assembly along the line inlet to be in contact with the threading assembly, the rope is pulled, and the threading assembly is driven by the line pressing assembly to push the rope to.

Description

Needle threading auxiliary device

Technical Field

The invention relates to the technical field of auxiliary needle threading, in particular to a needle head threading auxiliary device.

Background

In daily life, the needle that sews up clothes etc. and use need can carry out the sewing up work after the threading, and the through wires hole of sewing needle is smaller, and the threading process is more difficult, especially to the old man, takes time for the needle when carrying out the threading, and the hand of holding the needle or the hand of holding the line shake sometimes and move and will lead to the threading unsuccessful.

In response to the above problems, some needle-threaders have appeared on the market. One of them adopts the form of thin steel wire, and the thin steel wire is folded into a rhombus, and two ends are crossed so as to obtain the invented needle-threading device. When threading, only the diamond part of the needle-threading device is inserted into the needle hole, after the diamond penetrates through the needle hole, the diamond automatically expands due to elasticity, at the moment, the thread is threaded into the diamond needle-threading device, and finally, the needle-threading device is pulled out from the needle hole, and the thread is threaded. The threading device is also in a threading device form, a threading wrench which can rotate around a fulcrum and is provided with an elastic strip is arranged in a threading device shell, a key on the wrench is positioned outside the shell, a threading piece is fixedly connected with the upper end of the wrench, a threading hole which is consistent with the motion track of a guide pin in the threading piece and a needle fixing hole which is vertically crossed with the threading hole are arranged in the shell, and a sewing thread is inserted into a needle hole by utilizing the threading piece. These needle-threaders can all perform the function of assisting in threading, but still have room for improvement in terms of ease of use.

Disclosure of Invention

In view of this, a main object of the present invention is to provide a needle threading assisting device, which includes a housing assembly, a thread pressing assembly and a threading assembly installed inside the housing assembly, wherein the housing assembly includes a base and a fixing cover installed in a combined manner, the fixing cover has a strip-shaped thread inlet, the thread pressing assembly and the threading assembly correspond to the thread inlet, the thread pressing assembly is connected to the threading assembly, the thread pressing assembly drives the threading assembly, a thread is placed into the thread pressing assembly along the thread inlet, a threading head of a thread needle is inserted into the threading assembly along the thread inlet to contact with the threading assembly, the thread is pulled, and the thread pressing assembly drives the threading assembly to push the thread to thread.

In order to achieve the purpose, the invention provides a needle threading auxiliary device, which comprises a shell assembly, a line pressing assembly and a threading assembly, wherein the line pressing assembly and the threading assembly are installed inside the shell assembly; the thread pressing assembly and the threading assembly are arranged corresponding to the thread inlet and connected with the threading assembly, the thread pressing assembly drives the threading assembly, a thread is put into the thread pressing assembly along the thread inlet, and a threading head of a thread needle is inserted into the shell assembly along the thread inlet to be contacted with the threading assembly; when the rope is pulled, the rope drives the threading assembly through the line pressing assembly to push the rope to penetrate into the threading head of the thread needle.

Preferably, the wire pressing assembly comprises two first rotating shafts, two rotating wheels, a wire pressing belt, a second rotating shaft, a wire pressing wheel and a guide rail, the two first rotating shafts are perpendicular to the base and rotatably connected with the base, and the two rotating wheels are respectively and fixedly connected with the two first rotating shafts in a coaxial manner; the wire pressing belt is sleeved on the two rotating wheels simultaneously; the second rotating shaft is rotatably connected with the base, and the inner wall of the wire pressing wheel is fixedly connected with the second rotating shaft; the wire pressing wheel is attached to the wire pressing belt in an extruding mode, and the attached part of the wire pressing wheel and the wire pressing belt is aligned with the wire inlet in the direction perpendicular to the base; the guide rail is fixedly installed at the end part, far away from the base, of the wire pressing wheel, the threading assembly is connected with the guide rail, and the wire pressing wheel drives the threading assembly to move through the guide rail.

Preferably, the threading assembly comprises a transmission rod, a gear fixing block, a gear, a rack fixing block, a push rod and a positioning block, wherein one end of the transmission rod is slidably connected with the guide rail, and the other end of the transmission rod is rotatably connected with the gear; the gear fixing block is fixedly connected with the base, and the gear is rotatably arranged at the end part of the gear fixing block, which is far away from the base; the rack fixing block is fixedly connected with the base, the rack can slidably penetrate through the rack fixing block, and the rack is meshed with the gear; one end of the rack, which is far away from the gear, is fixedly connected with the push rod; the positioning block is fixedly connected with the base and is aligned with the wire inlet in a direction perpendicular to the base; the threading head of the thread needle stretches into and abuts against the positioning block, the end part of the push rod, far away from the rack, extends onto the positioning block, and the rope is pushed by the push rod to penetrate into the threading head of the thread needle.

Preferably, the threading assembly comprises two elastic pieces, the two elastic pieces are symmetrically fixed on two sides of the thread inlet and aligned with the positioning block in a direction perpendicular to the base, and two opposite surfaces of the two elastic pieces are respectively provided with a guide groove.

Preferably, the end of the positioning block remote from the base has a positioning slot aligned with the guide slot in a direction perpendicular to the base.

Preferably, the constant head tank both sides set up a plurality of anti-backs the barb, the anti-back barb is the slope form setting that inclines upwards.

Preferably, the end of the push rod has a V-shaped push head, which is aligned with the positioning groove.

Preferably, the positioning block is provided with an outlet plate, the outlet plate is provided with an outlet, the outlet plate is perpendicular to the base, and the outlet and the inlet are aligned in a direction perpendicular to the base.

Preferably, the outlet is three-quarter round.

Preferably, the wire inlet groove is obliquely arranged on the surface of the fixed cover far away from the base, and the inclination angle is 45 degrees.

Compared with the prior art, the needle threading auxiliary device disclosed by the invention has the advantages that: the needle threading operation can be completed by pulling the cord in the needle threading auxiliary device, and the needle threading device is high in accuracy and convenient and fast to operate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a needle threading aid according to the present invention.

Fig. 2 is a schematic view showing the internal structure of a needle threading aid of the present invention.

Fig. 3 is a back view of the needle threading aid of the present invention.

Fig. 4 is an enlarged schematic view of a portion a of fig. 1.

Fig. 5 is an enlarged schematic view of a portion B in fig. 2.

Fig. 6 is an enlarged schematic view of a portion C in fig. 2.

Detailed Description

As shown in fig. 1 to 3, a needle threading aid of the present invention comprises a housing assembly 10, a thread pressing assembly 20 and a threading assembly 30 mounted inside the housing assembly 10. The housing assembly 10 has a flat placement surface at the bottom. The housing assembly 10 comprises a base 11 and a fixed cover 12, the fixed cover 12 and the base 11 are assembled together, and the thread pressing assembly 20 and the threading assembly 30 are installed in combination with the base 11. The fixing cover 12 is provided with a wire inlet groove 121, the wire inlet groove 121 is obliquely arranged on the surface, away from the base 11, of the fixing cover 12, the preferred inclined angle is 45 degrees, and a rope can be conveniently pulled. The groove bottom of the wire inlet groove 121 is provided with a wire inlet 122, the wire inlet 122 extends along the axial direction of the wire inlet groove 121, and the wire inlet is communicated with the inside and the outside of the housing assembly 10. The wire inlet groove 121 is preferably a circular arc groove. The line pressing component 20 and the threading component 30 are arranged corresponding to the line inlet 122, the line pressing component 30 is connected with the threading component 20, the line pressing component 20 drives the threading component 30, a rope line is put into the line pressing component 20 along the line inlet 122, a threading head of the thread needle 40 is inserted into the threading component 30 along the line inlet 122 to be contacted with the threading component 30, the rope line is pulled, the line pressing component 20 drives the threading component 30 to push the rope line to penetrate into the threading head of the thread needle 40, and the auxiliary threading process is completed.

Specifically, the line pressing assembly 20 includes two first rotating shafts 211, two rotating wheels 212, a line pressing belt 213, a second rotating shaft 221, a line pressing wheel 222 and a guide rail 223. The two first rotating shafts 211 are rotatably connected to the base 11, and the two first rotating shafts 211 are perpendicular to the base 11. The two rotating wheels 212 are respectively coaxially and fixedly connected with the two first rotating shafts 211. The wire pressing belt 213 is simultaneously sleeved on the two rotating wheels 212, and the wire pressing belt 213 rotates along with the rotation of the rotating wheels 212. The flat surface of the wire pressing belt 213 supported by the two rotating wheels 212 is parallel to the extending direction of the wire inlet 122.

The second rotating shaft 221 is rotatably connected with the base 11, the inner wall of the wire pressing wheel 222 is fixedly connected with the second rotating shaft 221, the wire pressing wheel 222 is attached to the wire pressing belt 213 in an extruding manner, and the portion, attached to the wire pressing belt 213, of the wire pressing wheel 222 is aligned with the wire inlet 122 in a direction perpendicular to the base 11. The cord is put into a gap between the wire pressing wheel 222 and the cord pressing belt 213 through the cord inlet 122, and the wire pressing wheel 222 is driven to rotate by friction by pulling the cord, so that the cord pressing wheel 222 presses the cord in the direction of the cord pressing belt 213. The guide rail 223 is fixedly arranged at the end part of the pressing wheel 222 far away from the base 11, the threading assembly 30 is connected with the guide rail 223, and when the pressing wheel 222 rotates, the threading assembly 30 is driven to move through the guide rail 223.

The threading assembly 30 includes a transmission rod 31, a gear fixing block 32, a gear 33, a rack 34, a rack fixing block 35, a push rod 36, a positioning block 37 and two elastic pieces 38. One end of the transmission rod 31 is slidably connected with the guide rail 223, and the other end is rotatably connected with the gear 33. The gear fixing block 32 is fixedly connected with the base 11, and the gear 33 is rotatably installed at the end part, far away from the base 11, of the gear fixing block 32. The gear 33 has a pushing arm 331, the pushing arm 331 is away from the tooth portion of the gear 33, and the pushing arm 331 is rotatably connected to the transmission rod 31. The rack fixing block 35 is fixedly connected with the base 11, the rack 34 can slidably penetrate through the rack fixing block 35, the rack 34 is meshed with the gear 33, and the gear 33 drives the rack 34 to slide when rotating. One end of the rack 34 far away from the gear 33 is fixedly connected with the push rod 36. The positioning block 37 is fixedly connected to the base 11, and the positioning block 37 is aligned with the wire inlet 122 in a direction perpendicular to the base 11. The threading head of the thread needle 40 extends into and abuts against the positioning block 37, the end part of the push rod 36 far away from the rack extends onto the positioning block 37, and the rope is pushed by the push rod 36 to penetrate into the threading head of the thread needle 40.

As shown in fig. 6, the transmission rod 31 is slidably connected to the guide rail 223 through a fixing pin 311 and an elastic catch 312, the fixing pin 311 is slidably mounted in the guide rail 223, and the transmission rod 31 is connected to an end of the fixing pin 311 through the elastic catch 312.

As shown in fig. 4 and 5, two elastic pieces 38 are symmetrically fixed on both sides of the wire inlet 122, and the elastic pieces 38 are aligned with the positioning blocks 37 in a direction perpendicular to the base 11. The two elastic pieces 38 have guide grooves 381 on opposite surfaces thereof, and the thread needle 40 is inserted into the fixing cover 12 through the two guide grooves 381. The guide groove 381 limits the displacement direction of the needle 40 during the insertion process, and ensures that the needle 40 abuts against the positioning block 37 after being inserted. Have outlet plate 371 on the locating piece 37, outlet plate 371 is last to have outlet 372, outlet plate 371 is perpendicular to base 11, outlet 372 with inlet 122 is at the perpendicular to align in the direction of base 11, just outlet 372 is three-quarters circular form. The cord is put into the inlet 122 and then is clamped into the outlet 372. The end of the positioning block 37 away from the base 11 has a positioning groove 373, and the positioning groove 373 is aligned with the guide groove 381 in a direction perpendicular to the base 11. The threading head 41 of the thread needle 40 is inserted into the positioning groove 373 and is limited by the positioning groove 373. The positioning groove 373 is provided with a plurality of anti-return barbs 374 at two sides, and the anti-return barbs 374 are arranged in an upward inclined manner. The anti-back barbs 374 are preferably made of a resilient, soft material. The end of the push rod 36 has a V-shaped push head 361, and the V-shaped push head 361 aligns with the positioning groove 373 to push the thread into the threading hole of the threading head 41. The opening size of the V-shaped pushing head 361 is smaller than the threading hole size of the threading head 41. The anti-withdrawing barb 374 is inserted into the threading hole of the threading head 41 to prevent the V-shaped pushing head 361 from taking off the thread when withdrawing.

When the needle threading assisting device is used, the thread end of the thread is pinched by one hand, the thread is put into the thread inlet 122 through the thread inlet slope groove 121, and then is pulled into the thread outlet 272 from the thread inlet 122, and the thread is squeezed between the thread pressing belt 213 and the thread pressing wheel 222; then, the threading head 41 of the thread needle 40 is inserted between the two elastic pieces 38, the thread needle 40 will not move on the two elastic pieces 38 in a dislocation manner under the action of the guide groove 381, at this time, the threading hole of the threading head 40 extending into the thread inlet 122 is made parallel to the thread inlet 122 by the two elastic pieces 38 pressed against each other, and the threading head 40 is inserted into the positioning groove 373; then, the rope leaking out of the outlet 372 is continuously pulled, at the moment, the rope drives the wire pressing wheel 222 to rotate, and meanwhile, the wire pressing wheel 222 pushes the gear 33 to rotate through the transmission rod 31; then, the gear 33 drives the rack 34 to slide in the rack fixing block 35, the V-shaped push head 361 at the end of the push rod 36 is driven to press the cord in the cord inlet 122 into the threading hole of the threading head 41, when the cord pulling the cord outlet 372 is interrupted, the pulling is stopped, the needle 40 is pulled out, and the cord is threaded into the threading head 41. The needle threading operation can be completed by pulling the cord in the needle threading auxiliary device, and the needle threading device is high in accuracy and convenient and fast to operate.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A needle threading auxiliary device is characterized by comprising a shell assembly, a line pressing assembly and a threading assembly, wherein the line pressing assembly and the threading assembly are installed inside the shell assembly, the shell assembly comprises a base and a fixed cover, the fixed cover and the base are installed together in a combined mode, the line pressing assembly and the threading assembly are installed in combination with the base, a line inlet groove is formed in the fixed cover, and a line inlet is formed in the bottom of the line inlet groove; the thread pressing assembly and the threading assembly are arranged corresponding to the thread inlet and connected with the threading assembly, the thread pressing assembly drives the threading assembly, a thread is put into the thread pressing assembly along the thread inlet, and a threading head of a thread needle is inserted into the shell assembly along the thread inlet to be contacted with the threading assembly; when the rope is pulled, the rope drives the threading assembly through the line pressing assembly to push the rope to penetrate into the threading head of the thread needle.

2. The needle threading assisting device of claim 1, wherein the thread pressing assembly comprises two first rotating shafts, two rotating wheels, a thread pressing belt, a second rotating shaft, a thread pressing wheel and a guide rail, the two first rotating shafts are perpendicular to the base and are rotatably connected with the base, and the two rotating wheels are respectively and fixedly connected with the two first rotating shafts in a coaxial manner; the wire pressing belt is sleeved on the two rotating wheels simultaneously; the second rotating shaft is rotatably connected with the base, and the inner wall of the wire pressing wheel is fixedly connected with the second rotating shaft; the wire pressing wheel is attached to the wire pressing belt in an extruding mode, and the attached part of the wire pressing wheel and the wire pressing belt is aligned with the wire inlet in the direction perpendicular to the base; the guide rail is fixedly installed at the end part, far away from the base, of the wire pressing wheel, the threading assembly is connected with the guide rail, and the wire pressing wheel drives the threading assembly to move through the guide rail.

3. The needle threading assist device of claim 2 wherein the threading assembly comprises a drive rod, a gear mounting block, a gear, a rack mounting block, a push rod, and a positioning block, wherein one end of the drive rod is slidably coupled to the track and the other end is rotatably coupled to the gear; the gear fixing block is fixedly connected with the base, and the gear is rotatably arranged at the end part of the gear fixing block, which is far away from the base; the rack fixing block is fixedly connected with the base, the rack can slidably penetrate through the rack fixing block, and the rack is meshed with the gear; one end of the rack, which is far away from the gear, is fixedly connected with the push rod; the positioning block is fixedly connected with the base and is aligned with the wire inlet in a direction perpendicular to the base; the threading head of the thread needle stretches into and abuts against the positioning block, the end part of the push rod, far away from the rack, extends onto the positioning block, and the rope is pushed by the push rod to penetrate into the threading head of the thread needle.

4. The needle threading aid of claim 3 wherein said threading assembly includes two resilient tabs symmetrically secured to opposite sides of said inlet and aligned with said positioning block in a direction perpendicular to said base, said resilient tabs having guide slots on opposite sides thereof.

5. The needle threading aid of claim 4 wherein the end of the locating block remote from the base has a detent that aligns with the channel in a direction perpendicular to the base.

6. The needle threading aid of claim 5 wherein said retention groove is flanked by anti-backup barbs, said anti-backup barbs being angled upward.

7. The needle threading aid of claim 5 wherein the end of the push rod has a V-shaped push head that aligns with the positioning slot.

8. The needle threading aid of claim 3 wherein said locating block has an outlet plate with an outlet opening, said outlet plate being perpendicular to said base, said outlet opening being aligned with said inlet opening in a direction perpendicular to said base.

9. The needle threading aid of claim 8 wherein said outlet is three-quarters circular.

10. The needle threading aid of claim 1 wherein the entry slot is disposed at an angle of 45 ° to the face of the retaining cap remote from the base.

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