CN201109847Y - Lower shaft component of sewing machine - Google Patents
Lower shaft component of sewing machine Download PDFInfo
- Publication number
- CN201109847Y CN201109847Y CNU2007201150139U CN200720115013U CN201109847Y CN 201109847 Y CN201109847 Y CN 201109847Y CN U2007201150139 U CNU2007201150139 U CN U2007201150139U CN 200720115013 U CN200720115013 U CN 200720115013U CN 201109847 Y CN201109847 Y CN 201109847Y
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- Prior art keywords
- lower shaft
- bearing
- closed type
- sewing machines
- shaft
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Abstract
The utility model provides a lower shaft component of a sewing machine, which belongs to the mechanical technical field, and solves the problems that a matching part between a lower shaft component and a needle bearing of the sewing machine is easy to be worn, thereby the shock of the sewing machine is large, the noise is large, the needle tracking is not stable, the seam is not good, the service life is shorter, etc. The lower shaft component of the sewing machine is arranged on a base seat and is composed of a lower shaft, one end of the lower shaft is connected with a shuttle carrier arranged on the base seat, the other end thereof is connected with a lower bearing sleeve fixed on the base seat, at least a closed bearing is arranged between the lower bearing sleeve and the lower shaft, the inner ring of the closed bearing is fixed and connected with the lower shaft, and the outer ring thereof is fixed and connected with the lower bearing sleeve. The matching between the lower shaft of the lower shaft component of the sewing machine and the closed deep groove ball bearing is tight matching, thereby realizing the micro-oil lubrication of the lower shaft component, avoiding the attrition between the lower shaft component and the bearing matching part, and greatly improving the service lives of all components.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of following shaft assembly of Sewing machines, particularly a kind of following shaft assembly that can come the Sewing machines of back rotation in the certain angle scope.
Background technology
After the going up axle and rotate of bar tacking machine, drive lower shaft by the transmission mechanism between last axle and the lower shaft and rotate, make down shaft assembly be implemented in the certain angle scope interior come back rotation.
Be with needle bearing on the lower shaft of shaft assembly under this class bar tacking machine, and lower shaft is a matched in clearance with cooperating of needle bearing.This high speed that is engaged in down shaft assembly is come under the back rotation, easily weares and teares in the auxiliary section of following shaft assembly and needle bearing, and the service time one of Sewing machines is long, can produce the gap between following shaft assembly and the needle bearing, As time goes on, it is big more to wear and tear, and the gap is also big more.This has just brought a series of residual problems, as shakes greatly, the big needle tracking shakiness of noise, and linear slit is bad etc.Long-time wearing and tearing between following shaft assembly and the needle bearing have also caused service life of parts of time shaft assembly and needle bearing shorter.
In addition,,, need often to add lubricating oil and be lubricated in order to reduce wear because the lower shaft of the following shaft assembly of bar tacking machine is a matched in clearance with cooperating of needle bearing, cumbersome.
Also all there is above-mentioned similar problem in the following shaft assembly of the Sewing machines of other types.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing sewing machine, and has proposed to avoid producing wearing and tearing, the following shaft assembly of the Sewing machines of long service life between a kind of shaft assembly down and the bearing auxiliary section.
The purpose of this utility model can realize by following technical proposal: a kind of following shaft assembly of Sewing machines, be arranged on the base, comprise a lower shaft, one end of lower shaft links to each other with the shuttle race on being installed in base, the other end links to each other with lower bearing sleeve on being fixed on base, it is characterized in that, is provided with at least one closed type bearing between described lower bearing sleeve and the lower shaft, the inner ring and the lower shaft of closed type bearing are connected, and outer ring and lower bearing sleeve are connected.
Lower shaft is supported can be implemented in the certain angle scope by axial arranged closed type bearing and comes back rotation, and when lower shaft rotated, the inner ring that drives the closed type bearing that is being connected with it together rotated, and at this moment, the outer ring and the lower bearing sleeve of closed type bearing maintain static.
In the following shaft assembly of above-mentioned Sewing machines, be provided with at least one closed type bearing between described shuttle race and the lower shaft, the inner ring and the lower shaft of closed type bearing are connected, and outer ring and shuttle race are connected.When lower shaft came back rotation in the certain angle scope, the inner ring that drives the closed type bearing that is being connected with it equally together rotated, and the outer ring and the shuttle race of closed type bearing maintain static.
In the following shaft assembly of above-mentioned Sewing machines, described closed type bearing is closed deep groove ball bearing.Deep groove ball bearing is tightr with cooperating of parts such as lower shaft.
In the following shaft assembly of above-mentioned Sewing machines, described Lower shaft sleeve is connected in the endoporus of lower bearing sleeve, above-mentioned closed type bearing is contained in the endoporus of lower bearing sleeve, lower shaft, closed type bearing and lower bearing sleeve three are nested successively, and the interior outer end of hole of described lower bearing sleeve is provided with a lower shaft gear that is connected with lower shaft.Lower shaft, closed type bearing and lower bearing sleeve three are nested successively, and the inner ring and the lower shaft of closed type bearing are connected, and outer ring and lower bearing sleeve are connected.
In the following shaft assembly of above-mentioned Sewing machines, be provided with an oil sealing between described lower shaft gear and the closed type bearing, described oil sealing nestles up closed type bearing.Oil sealing is the same with closed type bearing to be enclosed within on the lower shaft, and the both sides of oil sealing abut against with closed type bearing and lower shaft gear respectively.
In the following shaft assembly of above-mentioned Sewing machines, described lower bearing sleeve is connected by the outer ring of tight fit and closed type bearing.Facts have proved that it is comparatively rational connecting by tight fit.
In the following shaft assembly of above-mentioned Sewing machines, described shuttle race is connected by the outer ring of tight fit and closed type bearing.
In the following shaft assembly of above-mentioned Sewing machines, described lower shaft is connected by the inner ring of tight fit and closed type bearing.
Compared with prior art, the lower shaft of the following shaft assembly of this Sewing machines is that close-fitting cooperates with cooperating of sealed deep groove ball bearing, promptly realized little oil lubrication of time shaft assembly, avoided again producing wearing and tearing, the service life of having improved each parts greatly between time shaft assembly and the bearing auxiliary section.The oil sealing that is provided with between lower shaft gear and the deep groove ball bearing can prevent that the lubricating oil of lower shaft gear and sector gear engaging piece from immersing in the endoporus of closed deep groove ball bearing under long-time the use, thereby avoids influencing the serviceability of closed deep groove ball bearing.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of the following shaft assembly of this Sewing machines.
Fig. 2 is the blast structural representation of the following shaft assembly of this Sewing machines.
Fig. 3 is the three-dimensional structural scheme of mechanism of the following shaft assembly of this Sewing machines.
Fig. 4 is the partial enlarged drawing at A place among Fig. 3.
Among the figure, 1, base; 2, lower shaft; 3, shuttle race; 4, lower bearing sleeve; 5, lower shaft gear; 6, deep groove ball bearing; 7, oil sealing; 8, big connecting rod assembly; 9, go up axle; 10, sector gear; 10a, sector gear screw pin; 11, nut.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As depicted in figs. 1 and 2, lower shaft 2 assemblies of this Sewing machines are arranged on the base 1, comprise a lower shaft 2, one end of lower shaft 2 links to each other with shuttle race 3 on being installed in base 1, be provided with two deep groove ball bearings 6 between lower shaft 2 and the shuttle race 3, the inner ring of deep groove ball bearing 6 and lower shaft 2 are connected, and outer ring and shuttle race 3 are connected, and all are connected by tight fit between them; Also be fixed with lower bearing sleeve 4 on the base 1, the other end of lower shaft 2 is socketed in the endoporus of lower bearing sleeve 4, be provided with two deep groove ball bearings 6 between lower bearing sleeve 4 and the lower shaft 2 equally, the inner ring of deep groove ball bearing 6 and lower shaft 2 are connected, outer ring and lower bearing sleeve 4 are connected, and all are connected by tight fit between them.
The end that lower shaft 2 is socketed in lower bearing sleeve 4 endoporus is connected with a lower shaft gear 5, and this lower shaft gear 5 is located at the interior outer end of hole of lower bearing sleeve 4.Be provided with an oil sealing 7 between lower shaft gear 5 and the deep groove ball bearing 6, oil sealing 7 and deep groove ball bearing 6 the same being enclosed within on the lower shaft 2, its both sides abut against with deep groove ball bearing 6 and lower shaft gear 5 respectively.
As shown in Figure 3 and Figure 4, big connecting rod assembly 8 connects goes up axle 9 and sector gear 10, what the major part endoporus of big connecting rod assembly 8 and last axle 9 pars convolutas were realized freely rotating is connected, and microcephaly's endoporus of big connecting rod assembly 8 is by the connect pin-and-hole of sector gear 10 and tightened by nut 11 and to realize the connection of freely rotating of sector gear screw pin 10a.Lower shaft 2 is to be bearing on four closed deep groove ball bearings 6 of close-fitting with it each two of the front-end and back-end of lower shaft 2.
When last axle 9 rotates, by transmitting layer by layer, realize that lower shaft 2 comes back rotation in the certain angle scope, at this moment, the inner ring tight fit of the two ends of lower shaft 2 and four deep groove ball bearings 6 is fixed together, and the inner ring that drives four deep groove ball bearings 6 rotates together; Simultaneously, the outer ring of these four deep groove ball bearings 6 is fixed together with the endoporus tight fit of shuttle race 3 with lower bearing sleeve 4 respectively, maintains static.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used base 1, lower shaft 2, shuttle race 3, lower bearing sleeve 4, lower shaft gear 5, deep groove ball bearing 6, oil sealing 7, big connecting rod assembly 8, gone up terms such as axle 9, sector gear 10, sector gear screw pin 10a, nut 11 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (8)
1, a kind of following shaft assembly of Sewing machines, be arranged on the base (1), comprise a lower shaft (2), one end of lower shaft (2) links to each other with shuttle race (3) on being installed in base (1), the other end links to each other with lower bearing sleeve (4) on being fixed on base (1), it is characterized in that, is provided with at least one closed type bearing between described lower bearing sleeve (4) and the lower shaft (2), the inner ring of closed type bearing and lower shaft (2) are connected, and outer ring and lower bearing sleeve (4) are connected.
2, the following shaft assembly of Sewing machines according to claim 1 is characterized in that being provided with at least one closed type bearing between described shuttle race (3) and the lower shaft (2), and the inner ring of closed type bearing and lower shaft (2) are connected, and outer ring and shuttle race (3) are connected.
3, the following shaft assembly of Sewing machines according to claim 1 and 2 is characterized in that described closed type bearing is closed deep groove ball bearing.
4, the following shaft assembly of Sewing machines according to claim 1 and 2, it is characterized in that described lower shaft (2) is socketed in the endoporus of lower bearing sleeve (4), above-mentioned closed type bearing is contained in the endoporus of lower bearing sleeve (4), lower shaft (2), closed type bearing and lower bearing sleeve (4) three are nested successively, and the interior outer end of hole of described lower bearing sleeve (4) is provided with a lower shaft gear (5) that is connected with lower shaft (2).
5, the following shaft assembly of Sewing machines according to claim 4 is characterized in that being provided with between described lower shaft gear (5) and the closed type bearing oil sealing (7), and described oil sealing (7) nestles up closed type bearing.
6, the following shaft assembly of Sewing machines according to claim 1 is characterized in that described lower bearing sleeve (4) is connected by the outer ring of tight fit and closed type bearing.
7, the following shaft assembly of Sewing machines according to claim 2 is characterized in that described shuttle race (3) is connected by the outer ring of tight fit and closed type bearing.
8, the following shaft assembly of Sewing machines according to claim 1 and 2 is characterized in that described lower shaft (2) is connected by the inner ring of tight fit and closed type bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201150139U CN201109847Y (en) | 2007-09-21 | 2007-09-21 | Lower shaft component of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201150139U CN201109847Y (en) | 2007-09-21 | 2007-09-21 | Lower shaft component of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201109847Y true CN201109847Y (en) | 2008-09-03 |
Family
ID=39894377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201150139U Expired - Fee Related CN201109847Y (en) | 2007-09-21 | 2007-09-21 | Lower shaft component of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201109847Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519836B (en) * | 2009-03-16 | 2013-03-13 | 中捷缝纫机股份有限公司 | Backlash adjusting mechanism of lower shaft gear and drive gear in a sewing machine |
| CN105926192A (en) * | 2016-05-19 | 2016-09-07 | 杰克缝纫机股份有限公司 | Oil-proof type wire bonding cam structure |
-
2007
- 2007-09-21 CN CNU2007201150139U patent/CN201109847Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519836B (en) * | 2009-03-16 | 2013-03-13 | 中捷缝纫机股份有限公司 | Backlash adjusting mechanism of lower shaft gear and drive gear in a sewing machine |
| CN105926192A (en) * | 2016-05-19 | 2016-09-07 | 杰克缝纫机股份有限公司 | Oil-proof type wire bonding cam structure |
| CN105926192B (en) * | 2016-05-19 | 2019-05-10 | 杰克缝纫机股份有限公司 | A kind of oilproof throwing cam structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ZOJE SEWING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONGJIE SEWING MACHINE CO., LTD. Effective date: 20140926 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140926 Address after: 317604 Yuhuan County barley island Subdistrict Office, Zhejiang, Taizhou Patentee after: Zhejiang Zoje Sewing Technology Co., Ltd. Address before: 317604 barley island development zone, Pearl River town, Zhejiang, Yuhuan County Patentee before: Zhongjie Sewing Machine Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |