CN201424597Y - Yarn cutting scissors - Google Patents

Abstract

The utility model discloses yarn cutting scissors, comprising a handle and two blades arranged on the front end of the handle, wherein the handle is in a U shape formed by connecting two handle parts,the inside of the two handle parts is provided with a bow-shape or arch bent return spring. The utility model provides the yarn cutting scissors which are easy to operate and can not be blocked by thick thread ends and aims at solving the problem that the existing yarn cutting scissors are laborsome to operate or easy to be blocked by thick thread ends; the yarn cutting scissors are provided withthe bow-shape (arch) bent return spring which is integrated with the plastic handle, can automatically rebound, at the same time, can overcome the spring force only through less force, so the yarn cutting scissors can be convenient and labor-saving to operate, in addition, the operation is convenient, and the service efficiency is higher.

Description

Yarn is cut

Technical field

The utility model relates to a kind of yarn to be cut, and especially refers to a kind ofly have and the integrated backspring of handle the end of a thread pruning tool that can rebound automatically.

Background technology

Though the pattern of modern Sewing machines is various, use for family and various special industrial production, but basic principle there is no change, all have in these Sewing machiness and make the sewing needle band that pumps and needle thread passing and make thing, and interlock mutually to make and make the thing typing making the entrained bobbin thread of the rotating shuttle (shuttle) of doing rotation (waving) motion below the thing.

As above-mentioned, be to interlock mutually and finalize the design with bobbin thread because make thing by needlework, stitch and needlework and bobbin thread must be cut off after appropriate, make it and make thing to break away from.Therefore certainly, also can be stay the end of a thread on the thing making, these remain in the end of a thread of making on the thing and need prune equally and make totally that to make thing attractive in appearance.

As for the instrument that is used for trimming and prunes the end of a thread nothing more than being exactly scissors.General scissors is normally formed by a blade cross-articulation, makes two blades intersect to form shearing action to cut off yarn.Because yarn is thin and soft, be difficult for it is cut off by the hinged conventional scissors that forms of two blades, therefore use special yarn to cut usually.

In first figure, demonstration one existing yarn is cut 50 outward appearance.This yarn is cut 50 and is comprised a plastic handle 51, and by the two shank 51a that connect to U-shaped, 51b constitutes, and two blade 52a, and 52b is incorporated into two shank 51a, the front end of 51b respectively.During trimming, yarn (figure does not show) places two blade 52a, between the 52b, thumb is pressed on the knife back of the first blade 52a, forefinger is placed under the knife back of the second blade 52b, force in two knife back then, as two blade 52a, when 52b overlapped, yarn was because two blade 52a, the interaction of 52b and being cut off; Yarn is cut 50 when loosing one's grip, and utilizes 50 elastic-restoring forces that body structure produced of handle to rebound automatically.Because yarn is cut when pruning thicker the end of a thread, is easy to cause two blades to clamp mutually, only depend on the elastic force of this body structure of handle to be difficult to rebound automatically this moment, thereby reduced the operating efficiency that yarn is cut.

In order to address the above problem, there was the people further to develop a kind of spring yarn afterwards again and cut.Shown in second figure, this spring yarn is cut 60 and is comprised a metal handle 61 by a pair of shank 61a, and 61b is hinged to form, two blade 62a, 62b is connected to two shank 61a, the front end of 61b, and 63 of torsionsprings are held in two shank 61a, between the 61b, cut 60 backspring as yarn.Because torsionspring 63 has very big elastic force, even cutting 60, yarn when pruning the thick line head, also can rebound automatically, unexpected blocking, but when operation, need overcome spring force, therefore there is not the above-mentioned yarn of spring design to cut painstakingly than handle.

Summary of the invention

Technical problem to be solved in the utility model is, cut at existing yarn and to have operation problem painstaking or that blocked by the thick line head, providing a kind of had not only operated easily but also the yarn that is not blocked by the end of a thread is cut, this yarn clipper has one-body molded with plastic handle and the backspring bending of work bow (arc) shape, can rebound automatically, only need very little strength just can overcome spring force simultaneously, the operation that yarn is cut is very convenient and strength-saving.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of yarn is cut, and comprises one handle and two blades that are arranged at the handle front end, the U-shaped structure of handle for linking by two shanks, and described two shank inboards are provided with the backspring of a bow action or arc-shaped bend.

Described backspring and handle are structure as a whole.

Described handle is made of a duroplasts interior handle body of making and the outer handle body by the flexible plastic moulding that is arranged at the interior handle body outside.

The top and the bottom of handle body respectively are provided with a protuberance in described, and protuberance protrudes in outer handle body, and protuberance is used to print other picture and text of trade mark, model or needs etc.

Excessive in order to prevent that yarn from cutting the angle of rebounding automatically, reduce operating efficiency, described two shank inboards are provided with two stops that stagger up and down, stop is in backspring the place ahead, each stop has a chute, the outside of chute is provided with vertical outstanding rod member, and rod member inserts in the chute of the other side's stop mutually slidably; To limit the angle that the yarn flechette returns.

The described two shank forward end outside respectively is provided with an on-slip groove, thumb and forefinger slippage from the handle when preventing to operate yarn and cutting.

One side that described two blades are relative is blade, and another side is the knife back, and the thickness of the more contiguous knife edge part of thickness of close knife back part makes blade possess certain thickness difference for thin, and its purpose is to improve the intensity of blade.

In order to improve degree of safety, described handle front end is installed cutter lid, in the cutter lid is contained in blade.

For the cutter lid well is connected with handle, described two shank forward end, two sides respectively are provided with a trip, and cutter cover back-end two side correspondences are provided with mortise, trip loose tongue intraocular.

Described cutter lid front end is provided with a frenulum hole, and the frenulum hole is used for installing a frenulum, yarn can be cut in the front like this or hangs on eye-catching position, conveniently takes.

Cut with existing yarn and to compare, the utlity model has significant advantage: adopt backspring, therefore can rebound handled easily automatically.While backspring and plastic handle integrative-structure, and make bow action or arc-shaped bend, so only need very little strength just can overcome spring force, the operation that yarn is cut is cut more laborsaving compared to existing spring yarn, what is more important, efficient of the present utility model is higher.

Description of drawings

Fig. 1 is existing a kind of yarn shear structure schematic diagram;

Fig. 2 is existing another kind of yarn shear structure schematic diagram;

Fig. 3 is an overall structure schematic diagram of the present utility model;

Fig. 4 is the structural representation of the present utility model that unloads after cutter covers;

Fig. 5 is a side schematic view of the present utility model;

Fig. 6 is the A-A cut-away view among Fig. 5;

Fig. 7 is the B-B cut-away view among Fig. 5.

Description of symbols among the figure

10---yarn cuts 20---handle

20a, 20b-shank 21---interior handle body

The outer handle body of 21a, 21b---interior shank 22---

22a, 22b---outer shank 23---backspring

24a, 24b--- protuberance 25a, 25b---trip

26a, 26b---stop 27a, 27b---chute

28a, 28b--- rod member 29a, 29b---on-slip groove

30a, 30b---blade 31a, 31b---blade

32a, 32b--- blade 33a, 33b---knife back

40---cutter lid 41a, 41b---mortise

Yarn is cut in 42---frenulum holes 50---

51--- handle 51a, 51b---shank

52a, 52b--- blade 61a, 61b---shank

62a, 62b---blade 63---torsionspring

The specific embodiment

Shown in Fig. 3-6, a kind of yarn is cut, comprise one handle 20 and the two blade 30a, the 30b that are arranged at handle 20 front ends, the U-shaped structure of handle 20 for linking by two shank 20a, 20b, described two shank 20a, 20b inboard are provided with the backspring 23 of a bow action or arc-shaped bend, backspring 23 is laminar, and backspring 23 is cut 10 power sources that rebound automatically as yarn.

Described backspring 23 is structure as a whole with handle 20.

Described handle 20 is made of a duroplasts interior handle body of making 21 and the outer handle body 22 by the flexible plastic moulding that is arranged at interior handle body 21 outsides.Interior handle body 21 is by shank 21a in disymmetrical, and 21b constitutes, and outer handle body 22 is by disymmetrical outer shank 22a, and 22b constitutes, interior shank 21a, and 21b and outer shank 22a, 22b constitutes the shank 20a of above-mentioned handle 20,22b.Interior handle body 21 and outer handle body 22 can be the combination of different colours, for example in handle body 21 adopt white, outer handle body 22 uses pink,, increase sales force attractive in appearance to promote and competitiveness.

The top and the bottom of handle body 21 respectively are provided with a protuberance 24a, 24b in described, and protuberance 24a, 24b protrude in outer handle body 22, and protuberance 24a, 24b are used to print other picture and text of trade mark, model or needs etc.

Excessive in order to prevent that yarn from cutting 10 angles of rebounding automatically, reduce operating efficiency, described two shank 20a, 20b inboard are provided with two stop 26a, the 26b that stagger up and down, stop 26a, 26b are in backspring 23 the place aheads, each stop 26a, 26b have a chute 27a, 27b, the outside of chute 27a, 27b is provided with vertical outstanding rod member 28a, 28b, rod member 28a, 28b insert mutually in chute 27a, the 27b of the other side's stop 26a, 26b slidably, up to rod member 28a, 28b meets chute 27a, the bottom dead-centre of 27b just stops, and cuts 10 angles of rebounding with the restriction yarn.

Described two shank 20a, the 20b front end outside respectively is provided with an on- slip groove 29a, 29b, prevents to operate yarn and cuts the slippage from the handle 20 of 10 o'clock thumbs and forefinger.

Described two blade 30a, one side that 30b is relative are blade 32a, 32b, another side is knife back 33a, 33b, thickness near knife back 33a, the 33b more contiguous knife edge part of thickness partly is thin, make blade 30a, 30b possess certain thickness difference, its purpose is to improve the intensity of blade 30a, 30b.

In order to improve degree of safety, described handle 20 front ends are installed cutter lid 40, in cutter lid 40 is contained in blade 30a, 30b.

For cutter lid 40 well is connected with handle 20, described two shank 20a, 20b front end two sides respectively are provided with a trip 25a, 25b, and cutter covers 40 rear ends, two side correspondences mortise 41a, 41b are set, in trip 25a, 25b embedding mortise 41a, the 41b.

Described cutter covers 40 front ends and is provided with a frenulum hole 42, and frenulum hole 42 is used for installing a frenulum, yarn can be cut 10 like this in the front or hang on eye-catching position, conveniently takes.

Certainly, the foregoing description can not break away under the scope of the present utility model in addition some variations, thus above explanation comprises and accompanying drawing shown in whole items should be considered as exemplary, but not in order to limit claim of the present utility model.

Claims (10)

1. a yarn is cut, and comprises one handle and two blades that are arranged at the handle front end, and the U-shaped structure of handle for being linked by two shanks is characterized in that described two shank inboards are provided with the backspring of a bow action or arc-shaped bend.

2. yarn as claimed in claim 1 is cut, and it is characterized in that, described backspring and handle are structure as a whole.

3. yarn as claimed in claim 1 is cut, and it is characterized in that, described handle is made of a duroplasts interior handle body of making and the outer handle body by the flexible plastic moulding that is arranged at the interior handle body outside.

4. yarn as claimed in claim 3 is cut, and it is characterized in that, the top and the bottom of described interior handle body respectively are provided with a protuberance, and protuberance protrudes in outer handle body.

5. yarn as claimed in claim 1 is cut, and it is characterized in that, described two shank inboards are provided with two stops that stagger up and down, stop is in backspring the place ahead, each stop has a chute, and the outside of chute is provided with vertical outstanding rod member, and rod member inserts in the chute of the other side's stop mutually slidably.

6. yarn as claimed in claim 1 is cut, and it is characterized in that, the described two shank forward end outside respectively is provided with an on-slip groove.

7. yarn as claimed in claim 1 is cut, it is characterized in that, one side described two blades relative be blade, another side is the knife back, for thin, makes blade possess certain thickness difference near the thickness of the more contiguous knife edge part of thickness of knife back part.

8. cut as the described yarn of one of claim 1 to 7, it is characterized in that, described handle front end is installed cutter lid, in the cutter lid is contained in blade.

9. yarn as claimed in claim 8 is cut, and it is characterized in that, described two shank forward end, two sides respectively are provided with a trip, and cutter cover back-end two side correspondences are provided with mortise, trip loose tongue intraocular.

10. yarn as claimed in claim 8 is cut, and it is characterized in that, described cutter lid front end is provided with a frenulum hole.

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