CN2133598Y

CN2133598Y - Shuttle joining structure of sewing machine

Info

Publication number: CN2133598Y
Application number: CN 91229256
Authority: CN
Inventors: 张伍良
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-28
Filing date: 1991-11-28
Publication date: 1993-05-19
Anticipated expiration: 2001-11-28

Abstract

The device provides a center shuttle connection structure of the sewing machine. The upper shell body and the bottom shell body of a center shuttle are separately provided with punch forming and the upper shell body is provided with through holes and hook points with preset number. The bottom shell body is provided with larger through holes and wheel hubs with preset number. The utility model is characterized in that the wheel hubs of the bottom shell body are provided with clamping convex portions with preset number and the connection seam of the upper shell body and the bottom shell body is provided with a corresponding gap. Thus the clamping convex portions of the bottom shell body and the gap of the upper shell body are tightly compacted for connection.

Description

Shuttle joining structure of sewing machine

This creation system is relevant with Sewing machines, more detailed it, refer to shuttle joint construction in a kind of Sewing machines especially.

Press, in advance, the shuttle device system part of an important indispensability very in the general Sewing machines, make accidentally if having slightly on the quality, to cause user's normal off line, the seam clothing has some setbacks, phenomenons such as the car pin is easily broken, therefore on making, require quality higher, and manufacturing cost is also very high, the manufacturing industry that what Sewing machines is now made dealer and countries in the world is suitable competition, it shown in figure one shuttle stereo appearance figure among the Sewing machines of commonly using, its similar half clam shell hollow shape, include upper casing, lower casing, wheel hub and axle center, and whole forming processes, finish by the lathe grinding mode, therefore lathe cuts and removes material, must spend many mental and physical efforts, operation and waste material, and formality is more miscellaneous during its operation, cut out the after-baking shaping by a ball material, again in addition lathe grinding remove institute need shape, after punch with punch press again, miscellaneous tens of operation procedures such as polishing are handled, for a manufacturer, and manpower, material, the cost that process velocity spent is difficult to calculate, even if this upper casing (1) and drain pan (2) are separated making, high-temperature soldering in addition again, precision that also must its joint of careful attention, (one has a little deviation, promptly can not use), therefore, though shuttle is a slight part in this, really perplexing manufacturer and consumption user.

In view of this, this case creator is based on above-mentioned drawback, and effort research and development and improvement, and accumulation many years of experience have this a creation generation that is enough to solve above-mentioned drawback finally.

That is, shuttle joint construction in the Sewing machines of this creation, its main purpose system provides a kind of easily manufactured, reduces cost and improves shuttle person in the combination of precision.

Shuttle joint construction in the Sewing machines of this creation, its another purpose system can make fast, produce in a large number to reduce consumer's burden.

Edge is, this creation system provides joint construction in a kind of Sewing machines, and it is that housing on the middle shuttle is separated punch forming with bottom shell body, and this upper shell is provided with the perforation and the bill of predetermined number, this bottom shell body be provided with predetermined number than large perforation and wheel hub; It is characterized in that: the wheel hub of this bottom shell body is provided with the clip protuberance of predetermined number, is provided with relative breach and this upper shell meets the edge place with this bottom shell body; In view of the above, the urgent and bonder of the breach two-phase of clip protuberance of this bottom shell body and upper shell.

For making feature, effect and the purpose of your juror to this creation, further understanding and approval are arranged, lift a preferred embodiment and cooperation now and be illustrated in back:

At first, see also shown in the figure two, in this creation Sewing machines the shuttle joint construction its be shuttle body (40) in, should in shuttle body (40) make up mutually by two housings, this two housing is a upper shell (10) and a bottom shell body (20).This is gone up, bottom shell body (10) (20) is punch forming respectively, the shape of this upper shell (10) with commonly use with, be a semicircle shape and have the radian face, this radian face is provided with perforation (11) and the external arc edge is provided with flange (14), this flange (14) is provided with the breach (13) of predetermined number, and is provided with a bill (12) in upper shell (10).This bottom shell body (20) still is a semicircular body and tool radian face in addition, this radian face is provided with than large perforation (21), in its outer rim is a wheel hub (24), this wheel hub (24) is provided with the clip protuberance (23) of predetermined number protrusion, and this clip protuberance (23) is relative with this breach (13) and the size that matches arranged, with this upper shell of the urgent location of two-phase (10) and drain pan (20), in the affixed axle center, a chamber of establishing of this bottom shell body (20);

The combination of shuttle body (40) in being somebody's turn to do is accurately to engage the breach (13) of this upper shell (10) and the clip protuberance (23) of bottom shell body (20) fastening, like this, can give mutually integrally welded, do not have again the anxiety facts that walks is arranged, processing is got up, very convenient, product precision is also high.This upper shell (10) and bottom shell body (20) are punch forming respectively, as long as the plate body of a preliminary dimension in addition punching press is promptly plastic, needn't be as commonly used need be with the material of a circle miscellaneous process of hollowing out of turning in addition, both waste materials, labor intensive and time again, and because the special shape of its shape tool circular arc, commonly use the processing of more wanting tens of processing when making, as long as and this creation has a tool elite mould, can be cut required size in advance to save material, and punch press, the shape and the precision of punch forming are correct, faulty materials are few, and the machinery that is used is also few, and more need not to invest a large amount of manpowers, material resources are on production line, nature can be produced in a large number, improves the competitiveness; Again because the clip protuberance (23) of the breach (13) of this upper shell (10) and bottom shell body (20) can the urgent location of two-phase, also be one-shot forming breach (13) and clip protuberance (23) during by punching press, save in the past with welding manner and be difficult to shortcoming, more can make among the integral body shuttle surface and inner face smooth the splice grafting edge.

In sum, shuttle joint construction in this creation Sewing machines is broken through the turning or the welding manner of traditional type, and is replaced with more progressive joint construction, in moulding, manufacturing and the practicality thereof of integral body all commonly use fast, advantage, and Sewing machines is made, and factory can reduce cost, produces in a large number, the consumer more can suffer its profit, this creation is true can improve in the structure of shuttle joint, make now among shuttle sewing machine dealer, can compete with countries in the world, open up a market, for this reason, special application utility model patent.

Accompanying drawing is as follows:

Shuttle schematic perspective view in the Sewing machines that first figure system commonly uses.

Second figure is this three-dimensional exploded view of creating a preferred embodiment.

The 3rd figure is that this creates the schematic diagram of a preferred embodiment when combination.

Claims

1, shuttle joint construction in a kind of Sewing machines, its upper shell (10) are provided with the perforation (10) and the bill (12) of predetermined number, this bottom shell body (20) be provided with pre-number than large perforation (21) and wheel hub (24); It is characterized in that: the wheel hub of this bottom shell body (20) is provided with the clip protuberance (23) of predetermined number, is provided with relative breach (13) and this upper shell (10) meets the edge place with this bottom shell body (20); In view of the above, the urgent and bonder with breach (13) two-phase of the clip protuberance (23) of this bottom shell body (20) and upper shell (10).