CN202688664U - Backstitching device of sewing machine - Google Patents
Backstitching device of sewing machine Download PDFInfo
- Publication number
- CN202688664U CN202688664U CN 201220304387 CN201220304387U CN202688664U CN 202688664 U CN202688664 U CN 202688664U CN 201220304387 CN201220304387 CN 201220304387 CN 201220304387 U CN201220304387 U CN 201220304387U CN 202688664 U CN202688664 U CN 202688664U
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- CN
- China
- Prior art keywords
- feeding
- shaft
- synchronous pulley
- sewing machines
- backstitching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model provides a backstitching device of a sewing machine and belongs to the technical field of sewing machines. The backstitching device resolves the problems of poor performance and instable use of the existing backstitching structure. A synchronous pulley is installed at one end of an upper shaft of the sewing machine and is connected with a motor shaft of a driving motor through a coupler, the synchronous pulley of the upper shaft is in transmission with a synchronous pulley of a lower shaft through a synchronous belt, the upper shaft is respectively connected with one end of a tooth-raising connection rod and one end of a feeding connection rod through two eccentric wheels, the feeding connection rod is connected with a feeding shaft of a swinging feeding device, and a back feeding connection rod matched with a back feeding crank handle in movement is connected onto the swinging feeding device. The backstitching device has the advantages of being novel in structure conception, good in actual using effect and the like.
Description
Technical field
The utility model belongs to the Backsewing unit in sewing machine technique field, particularly Sewing machines.
Background technology
At present, usually on the Sewing machines backstitch structural behaviour not good, use unstable.
Summary of the invention
The purpose of this utility model has provided the Backsewing unit applicable to multiple Sewing machines.
The purpose of this utility model is achieved in that the Backsewing unit of Sewing machines, it is characterized in that: an end of the upper axle of this Sewing machines is equipped with synchronous pulley, synchronous pulley is connected with the motor shaft of drive motors by shaft coupling, synchronous pulley on the upper axle and the synchronous pulley on the lower shaft pass through toothed belt transmission, be connected with an end of lifting tooth connecting rod and feeding connecting rod respectively by two eccentric wheels on the upper axle, described feeding connecting rod connects feed spool by the oscillating feed device, be connected with the connecting rod of falling the feeding that matches and move with the crank of falling the feeding on the oscillating feed device, one end of the described crank of falling the feeding is provided with the roller pin that drives the link motion of falling the feeding, the other end is fixed with the wrench shaft that backstitches that is supported on the head shell, backstitch wrench shaft and be connected mutually with backstitching spanner, describedly backstitch left side or the right side that spanner is arranged on Timing Belt.
This Backsewing unit is to have adopted to backstitch wrench shaft and backstitch spanner and be connected mutually, backstitch wrench shaft and backstitch crank and removably be connected, when making Sewing machines, backstitch wrench shaft according to actual conditions with can selecting different length, realization backstitches the different fixed positions of spanner, the fixed position that backstitches spanner in the utility model is positioned at left side or the right side of this sewing machine synchronous belt, so this device is applicable to multiple Sewing machines.
In the Backsewing unit of above-mentioned Sewing machines, describedly backstitch the right side that spanner is arranged on Timing Belt and be, the Timing Belt that the right-hand member that backstitches wrench shaft passes annular extends the right side of Timing Belt and is fixed with in its right part and backstitches wrench.
In the Backsewing unit of above-mentioned Sewing machines, synchronous pulley on the described upper axle is connected with the motor shaft of drive motors by shaft coupling: be provided with the groove that is connected with shaft coupling one end on this synchronous pulley, the other end of shaft coupling is fixedly connected with motor shaft, is provided with the elastic buffer sheet between the groove on shaft coupling and the synchronous pulley.
The utility model compared to existing technology outstanding and useful technique effect is:
1, the wrench shaft that backstitches by different length of the present utility model is realized backstitching left side or the right side that spanner is arranged on Timing Belt, and structure is very clear, practical.
2, be provided with between the groove of shaft coupling of the present utility model and synchronous pulley the elastic buffer sheet, make the transmission of power of axle on electric machine main shaft and the Sewing machines steady, the waste that has reduced energy has guaranteed the service behaviour of Sewing machines simultaneously.
3, structural framing of the present utility model is novel, practical effect is good.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is structural representation sketch of the present utility model.
Fig. 3 is partial structurtes schematic diagram of the present utility model and cutaway view.
The specific embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-2:
The Backsewing unit of Sewing machines, one end of the upper axle 1 of this Sewing machines is equipped with synchronous pulley 11, synchronous pulley is connected with the motor shaft 10 of drive motors by shaft coupling 12, synchronous pulley 11 on the upper axle and the synchronous pulley on the lower shaft are by Timing Belt 2 transmissions, be connected with an end of lifting tooth connecting rod and feeding connecting rod 3 respectively by two eccentric wheels 3 on the upper axle 1, described feeding connecting rod 3 connects feed spool 4 by the oscillating feed device, be connected with the connecting rod of falling the feeding 6 that matches and move with the crank of falling the feeding 5 on the oscillating feed device, one end of the described crank of falling the feeding 5 is provided with the roller pin 51 that drives the connecting rod of falling the feeding 6 motions, the other end is fixed with to be supported on and backstitches wrench shaft 8 on the head shell, backstitch wrench shaft 8 and be connected mutually with backstitching spanner 7, describedly backstitch left side or the right side that spanner 7 is arranged on Timing Belt 2.This Backsewing unit is to have adopted to backstitch wrench shaft 8 and backstitch spanner 7 and be connected mutually, backstitch wrench shaft 8 and backstitch crank 5 and removably be connected, when making Sewing machines, backstitch wrench shaft 8 according to actual conditions with can selecting different length, realization backstitches the different fixed positions of spanner 7, the fixed position that backstitches spanner 7 in the utility model is positioned at left side or the right side of this sewing machine synchronous belt 2, so this device is applicable to multiple Sewing machines.
Backstitch the right side that spanner 7 is arranged on Timing Belt 2 and be above-mentioned, the Timing Belt 2 that the right-hand member that backstitches wrench shaft 8 passes annular extends the right side of Timing Belt and is fixed with in its right part and backstitches wrench 7.
Above-described embodiment is preferred embodiment of the present utility model only, is not to limit according to this protection domain of the present utility model, so: all equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.
Claims (3)
1. the Backsewing unit of Sewing machines, it is characterized in that: an end of the upper axle of this Sewing machines is equipped with synchronous pulley, synchronous pulley is connected with the motor shaft of drive motors by shaft coupling, synchronous pulley on the upper axle and the synchronous pulley on the lower shaft pass through toothed belt transmission, be connected with an end of lifting tooth connecting rod and feeding connecting rod respectively by two eccentric wheels on the upper axle, described feeding connecting rod connects feed spool by the oscillating feed device, be connected with the connecting rod of falling the feeding that matches and move with the crank of falling the feeding on the oscillating feed device, one end of the described crank of falling the feeding is provided with the roller pin that drives the link motion of falling the feeding, the other end is fixed with the feeding wrench shaft that is supported on the head shell, the feeding wrench shaft is connected mutually with backstitching spanner, describedly backstitches left side or the right side that spanner is arranged on Timing Belt.
2. the Backsewing unit of Sewing machines according to claim 1, it is characterized in that: describedly backstitch the right side that spanner is arranged on Timing Belt and be, the Timing Belt that the right-hand member that backstitches wrench shaft passes annular extends the right side of Timing Belt and is fixed with in its right part and backstitches wrench.
3. the Backsewing unit of Sewing machines according to claim 1, it is characterized in that: the synchronous pulley on the described upper axle is connected with the motor shaft of drive motors by shaft coupling and is: be provided with the groove that is connected with shaft coupling one end on this synchronous pulley, the other end of shaft coupling is fixedly connected with motor shaft, is provided with the elastic buffer sheet between the groove on shaft coupling and the synchronous pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220304387 CN202688664U (en) | 2012-06-22 | 2012-06-22 | Backstitching device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220304387 CN202688664U (en) | 2012-06-22 | 2012-06-22 | Backstitching device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202688664U true CN202688664U (en) | 2013-01-23 |
Family
ID=47544310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220304387 Expired - Lifetime CN202688664U (en) | 2012-06-22 | 2012-06-22 | Backstitching device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202688664U (en) |
-
2012
- 2012-06-22 CN CN 201220304387 patent/CN202688664U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JACK SEWING CO., LTD. Free format text: FORMER NAME: NEW JACK SEWING MACHINE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 318000 Taizhou Airport Road, Jiaojiang District, Zhejiang, No. 15 Patentee after: JACK SEWING MACHINE Co.,Ltd. Address before: 318010 Taizhou Airport Road, Jiaojiang District, Zhejiang, No. 15 Patentee before: NEW JACK SEWING MACHINE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |