CN203602878U - Cop latch sleeve - Google Patents

Abstract

The utility model provides a cop latch sleeve. A yarn guiding hook is in an L shape, one side of the L-shaped yarn guiding hook is fixed on the cop latch sleeve, and the other side of the L-shaped yarn guiding hook is tightly attached to the outer circular face of the cop latch sleeve. The cop latch sleeve is characterized in that holes are formed in the outer circular face of the cop latch sleeve at the end face of the side, tightly attached to the outer circular face of the cop latch sleeve, of the yarn guiding hook. The fixed yarn guiding hook is bent to be in the L shape, one side of the L-shaped yarn guiding hook is fixed on the cop latch sleeve, and the other side of the L-shaped yarn guiding hook is tightly attached to the outer circular face of the cop latch sleeve, so that yarns which penetrate through the cop latch sleeve are prevented from falling off; the holes are formed in the outer circular face of the cop latch sleeve and located in the end face of the fixed yarn guiding hook, so that bottom yarns penetrate through the inwards-concave positions of the holes, smoothly penetrate through the lower portion of the attached fixed yarn guiding hook and enter bottom yarn grooves; when the bottom yarns can smoothly extend out of the cop latch sleeve, staff using a sewing machine can control the extending lengths of the bottom yarns according to actual needs, surface yarns can hold the bottom yarns tightly, and the phenomenon that yarns are separated from needles in the sewing process in effectively avoided.

Description

Bobbin case

Technical field:

The utility model relates to the bobbin case on Sewing machines, and the wire relating in particular on bobbin case hooks.

Background technology:

Even the kind difference of Sewing machines, but Sewing machines is in the process of work, nearly all likely there is to run the phenomenon of empty needle, this is because the bottom line amount pulling out under tension adjustment spring action by the suture of bobbin case is little, start to make or automatically after broken string while again making, upper thread cannot be firmly grasped with bottom line effectively, just there will be the phenomenon of running empty needle.

Therefore, current bobbin case all can be drawn " bottom line " and is fixed on the position that is easy to catch upper thread adjust spring from line tension, and wherein also some bobbin case can be installed " fixing cord hook " and fixes bottom line on periphery.

Because the gap between periphery and the interior syringe of bobbin case is very little, cannot hook by hookup wire round fixing cord.If the straight fixing cord of non-coiled type is hooked and is attached on periphery, although can pierce into interior syringe, but in the time that bottom line wants to pierce into fixing cord hook inner side, because position gap is little, just there will be bottom line to be suspended to fixing cord hooks on front end position, occur making or automatically after broken string while again making, upper thread cannot be firmly grasped with bottom line effectively, causes the phenomenon of the failure of running empty needle

Bobbin case side view when perforate not in main body as shown in Figure 6, if the end face bends fixing cord not being hooked, line can be suspended to wire and hook leading portion position, line cannot be worn past tense, when Sewing machines work, just there will be the phenomenon because run empty needle without bottom line.

Summary of the invention:

For addressing the above problem, the utility model adopts following methods to solve: L-type " fixing cord hook " is close on the periphery that is arranged on bobbin case, as shown in Figure 1, bottom line can be pierced in the small space between bobbin case and interior syringe, and bottom line penetrate Shi Buhui be suspended to wire hook end face on; When work, bottom line can not skid off again bobbin case.

A kind of bobbin case of the utility model, it is " L shaped " that wire hooks 2, and wherein a side of L is fixed on described bobbin case, and opposite side is close on bobbin case periphery; It is characterized in that, described in be close to wire on bobbin case periphery and hook a side of 2, perforate 4 on the bobbin case periphery of its endface position.

In said apparatus, the front end of described wire hook 2 is bending structure.

The related bobbin case of the utility model has two kinds of structures:

One, the L-type fixing cord being arranged on periphery is hooked to fore-end bending, can make smooth and easy not the hindering of bottom line slide into fixing cord hook below, enter bottom line groove, as shown in Figure 4;

Two, L-type fixing cord hooks as linear structure, by perforate on the bobbin case periphery in fixing cord hook endface position, make bottom line slip into fixing cord by the interior recessed position in hole and hook and enter in bottom line groove, and the end face that the wire that is not fixed hooks catches on, as shown in Figure 5.

To achieve these goals, the side that fixing cord hook is curved " L shaped " by the design is fixed on bobbin case, as shown in Figure 1, opposite side is close on bobbin case periphery, prevents that the line having passed from coming off; On bobbin case periphery, fixing cord hooks the position perforate of end face, makes bottom line pass through the interior recessed position in hole, and smooth and easy not hindering pierced into the fixing cord hook below of being close to and enter in bottom line groove.

When bottom line can stretch out swimmingly from bobbin case, use the employee of Sewing machines just can control according to actual needs the overhang of bottom line, make upper thread can catch effectively bottom line, effectively avoid the phenomenon of the race empty needle in sewing process.

Accompanying drawing explanation:

Fig. 1 bobbin case structural representation;

When the work of Fig. 2 bobbin case, wire hooks and sutural view;

Top view when Fig. 3 is installed in interior syringe by bobbin case;

Fig. 4 bobbin case L-type wire hooks, the shape of anterior bending and duty thereof;

Fig. 5 bobbin case L-type wire hooks, and wire hooks perforate and duty thereof on front portion, bobbin case periphery;

Shape and duty that in Fig. 6 prior art, bottom line wire hooks;

In figure: 1, bobbin case; 2, straight line L-type wire hooks; 3, the L-type wire of front end bending hooks; 4, fixing cord hooks the hole of endface position; 5, penetrate fixing cord and hook below bottom line before; 6, penetrated the bottom line of fixing cord hook below; 7, the gap between bobbin case periphery and interior syringe barrel; 8, interior syringe; 9, interior syringe barrel; 10, bottom line groove

The specific embodiment:

Below in conjunction with embodiment, the utility model will be further described.

The bobbin case that the utility model is related, hooks 2 by fixing cord and curves " L shaped ", and a side is wherein fixed on bobbin case, and opposite side is close on bobbin case periphery, prevents that the line having passed from coming off.Wherein said wire hooks two kinds of structures:

One, to hook 2 be linear structure to fixing cord, by hook perforate 4 on bobbin case 1 periphery of 2 endface position at fixing cord, make bottom line 5 slip into fixing cord by the interior recessed position in hole 4 and hook and enter in bottom line groove 10, and the end face of the wire hook 2 that is not fixed catches on.

As shown in Fig. 2 and Fig. 5, the fixing cord of installing on the periphery of bobbin case 1 hooks 2 for not bending fixing cord hook; And perforate 4 on the periphery of bobbin case 1.

As Fig. 3, bobbin case 1 is arranged in interior syringe 8, and the gap 7 between the periphery of bobbin case 1 and the barrel 9 of interior syringe 8 is very little, directly affects bottom line 5 and penetrates wire hook.

As Fig. 5, bottom line 5 through the perforate 4 on bobbin case periphery, slips into bottom line groove 10 easily, eliminates the hook phenomenon of bottom line 6.

Two, hook fore-end bending by being arranged on fixing cord on bobbin case periphery, can make smooth and easy not the hindering of bottom line slide into fixing cord and hook 3 belows, enter bottom line groove 10;

As Fig. 4, by after the front end bending of fixing cord hook 2, bottom line 5 is easy to the gap 7 through wire hook 2 and bobbin case 1, slips into bottom line groove 10.

Beneficial effect:

Bottom line can stretch out swimmingly from bobbin case, use the employee of Sewing machines easily bottom line to be pierced in bobbin case, and L-type wire hooks is close to bobbin case cylindrical wall, make upper thread be not easy to skid off, when work, can catch effectively upper thread, effectively avoid the phenomenon of the race empty needle in sewing process.

Claims (2)

1. a bobbin case, it is " L shaped " that wire hooks (2), and wherein a side of L is fixed on described bobbin case, and opposite side is close on bobbin case periphery; It is characterized in that, described in be close to wire on bobbin case periphery and hook the side of (2), perforate (4) on the bobbin case periphery of its endface position.

2. a kind of bobbin case as claimed in claim 1, is characterized in that, the front end that described wire hooks (2) is bending structure.

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