CN203411776U - Sealing structure of swinging shaft of sewing machine - Google Patents
Sealing structure of swinging shaft of sewing machine Download PDFInfo
- Publication number
- CN203411776U CN203411776U CN201320474687.3U CN201320474687U CN203411776U CN 203411776 U CN203411776 U CN 203411776U CN 201320474687 U CN201320474687 U CN 201320474687U CN 203411776 U CN203411776 U CN 203411776U
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- China
- Prior art keywords
- swinging
- axle
- swinging axle
- shaft
- axle sleeve
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of sewing machines and particularly discloses a sealing structure of a swinging shaft of the sewing machine. The sealing structure comprises the swinging shaft, wherein one end of the swinging shaft is fixedly connected with a swinging arm; a shaft sleeve is sheathed at the middle part of the swinging shaft and is fixedly connected with a case; a swinging clearance is arranged between the swinging shaft and the shaft sleeve; the part of the swinging shaft, which is positioned in the shaft sleeve, is provided with a ring-shaped positioning groove; the ring-shaped positioning groove is internally provided with an elastic sealing ring; the periphery of the elastic sealing ring is in interference fit with an inner hole of the shaft sleeve. The elastic sealing ring is in interference fit in the shaft sleeve, so that the outer end of the sealing clearance is blocked and further the leakage of engine oil in a machine head can be effectively prevented. Therefore, the sealing structure disclosed by the utility model has the beneficial effect that the oil leakage at the connecting position of the swinging shaft and the shaft sleeve can be effectively prevented.
Description
Technical field
The utility model relates to sewing machine technique field, relates in particular to a kind of Sewing machines swinging axle hermetically-sealed construction.
Background technology
In industrial sewing machine, there are many swinging axles, such as feed spool, platform tooth axle etc.Swinging axle swings conventionally in swinging bush, between swinging axle and swinging bush, certainly exist the gap for swinging, yet in some swinging axle, there is one section to be positioned at head inside, and the other end stretches out head from head inside, and the head inside of industrial sewing machine is all full of machine oil, therefore swinging axle stretches out outside position from head inside and easily occurs oil leakage phenomenon, leakage of oil can cause polluting on the one hand, continuing on the other hand leakage of oil meeting causes the head of head inside to reduce, if supplementing not in time head can cause generating heat between parts, serious wear and cause damage.
Utility model content
The utility model is in order to overcome poor sealing performance between Sewing machines swinging axle of the prior art and axle sleeve, and easily the deficiency of leakage of oil, provides a kind of Sewing machines swinging axle hermetically-sealed construction that can effectively prevent swinging axle and the leakage of oil of axle sleeve junction.
To achieve these goals, the utility model adopts following technical scheme:
A kind of Sewing machines swinging axle hermetically-sealed construction, comprise swinging axle, one end of swinging axle is fixedly connected with swing arm, the middle part of described swinging axle is arranged with axle sleeve, described axle sleeve is fixedly connected with casing, is provided with and swings gap between swinging axle and axle sleeve, and the position that described swinging axle is positioned at axle sleeve is provided with annular positioning groove, in described annular positioning groove, be provided with elastic seal ring, interference fit between the periphery of described elastic seal ring and the endoporus of axle sleeve.Sewing machines, in work, swings elastic seal ring and inner hole of shaft sleeve interference fit in the swing interstice coverage of swinging axle in axle sleeve, prevent lubricating oil leakage, there is elastic deformation in elastic seal ring simultaneously along with the swing of swinging axle, automatic and inner hole of shaft sleeve is sealed and matched, and prevents lubricating oil leakage.
As preferably, the outer circumference surface of described elastic seal ring is provided with annular groove, and the cross section of described annular groove is V-shaped or trapezoidal.Swing arm is when driving swinging axle to swing, elastic seal ring one side generation elasticity crimp is to adapt to the swing of swinging axle, this can bring resistance to swinging axle, to swing arm, increase load, thereby whole swing mechanism is increased to load, and therefore the periphery at elastic seal ring arranges annular groove, it is yielding while receiving inner hole of shaft sleeve extruding that elastic seal ring is one-sided, reduce the resistance to swinging axle, can not affect the sealing property of elastic seal ring simultaneously.
As preferably, between the lateral surface of axle sleeve one end and end face, be provided with ramp down angle.Axle sleeve when installing with installing hole on casing between interference fit, prevent that machine oil is from seepage outside axle sleeve, so be provided with ramp down angle in one end of axle sleeve, be convenient to the installation of axle sleeve.
As preferably, described swing gap is between 1.5mm-3.5mm.Swinging the too little meeting in gap affect performance, and too large sealing difficulty increases, and seal clearance is located within the scope of this, can guarantee the function of swinging axle, does not have and can affect its sealing effectiveness.
Therefore, the utlity model has the beneficial effect that can effectively prevent swinging axle and the leakage of oil of axle sleeve junction.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the utility model A place enlarged diagram.
In figure: swinging axle 1 swing arm 2 axle sleeve 3 casing 4 annular positioning groove 5 elastic seal ring 6 annular grooves 7.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
A kind of Sewing machines swinging axle hermetically-sealed construction as shown in Figure 1, comprise swinging axle 1, one end of swinging axle 1 is fixedly connected with swing arm 2, the middle part of swinging axle 1 is arranged with axle sleeve 3, axle sleeve is fixedly connected with casing 4, be positioned at swinging axle 1 whole installation in casing 4 left sides in the inside of head of sewing machine, the swinging axle that is positioned at casing 4 right sides wears out from head of sewing machine inside, the swinging axle of head of sewing machine inside is full of machine oil around, between swinging axle 1 and axle sleeve 3, be provided with and swing gap, swing gap between 1.5mm-3.5mm, swing gap in the present embodiment is 2mm, the difference that is the interior pore radius of axle sleeve and the radius of swinging axle is 2mm, the position that swinging axle 1 is positioned at axle sleeve is provided with annular positioning groove 5, in annular positioning groove 5, be provided with elastic seal ring 6, interference fit between the periphery of described elastic seal ring 6 and the endoporus of axle sleeve 3, elastic seal ring can effectively prevent that the machine oil in swinging axle left end head of sewing machine from leaking out from swinging gap location, the outer circumference surface of elastic seal ring 6 is provided with two ring annular grooves 7, the cross section of described annular groove 7 is V-shaped or trapezoidal, as shown in Figure 2, the cross section of the annular groove in the present embodiment is trapezium structure, swing arm is when driving swinging axle to swing, elastic seal ring one side generation elasticity crimp is to adapt to the swing of swinging axle, this can bring resistance to swinging axle, to swing arm, increase load, thereby whole swing mechanism is increased to load, therefore the periphery at elastic seal ring arranges annular groove, it is yielding while receiving inner hole of shaft sleeve extruding that elastic seal ring is one-sided, reduce the resistance to swinging axle, can not affect the sealing property of elastic seal ring simultaneously, between the lateral surface of axle sleeve 3 left ends and end face, be provided with ramp down angle, consider the sealing in axle sleeve outside, so the installing hole on axle sleeve and casing is also interference fit, at the left end of axle sleeve, design ramp down angle, be convenient to like this axle sleeve and pack in installing hole.In this kind of structure, elastic seal ring can effectively prevent that the machine oil in head from leaking out from swinging gap location, and elastic seal ring, along with corresponding deformation occurs in the swing of swinging axle, reduces the swing resistance of swinging axle simultaneously, reduce the load of whole swing mechanism, improve the service life of Sewing machines.Therefore, the utlity model has the beneficial effect that can effectively prevent swinging axle and the leakage of oil of axle sleeve junction.
Claims (4)
1. a Sewing machines swinging axle hermetically-sealed construction, comprise swinging axle (1), one end of swinging axle (1) is fixedly connected with swing arm (2), the middle part of described swinging axle (1) is arranged with axle sleeve (3), described axle sleeve is fixedly connected with casing (4), it is characterized in that, between swinging axle (1) and axle sleeve (3), be provided with and swing gap, the position that described swinging axle (1) is positioned at axle sleeve is provided with annular positioning groove (5), in described annular positioning groove (5), be provided with elastic seal ring (6), interference fit between the endoporus of the periphery of described elastic seal ring (6) and axle sleeve (3).
2. a kind of Sewing machines swinging axle hermetically-sealed construction according to claim 1, is characterized in that, the outer circumference surface of described elastic seal ring (6) is provided with annular groove (7), and the cross section of described annular groove (7) is V-shaped or trapezoidal.
3. a kind of Sewing machines swinging axle hermetically-sealed construction according to claim 1 and 2, is characterized in that, between the lateral surface of axle sleeve (3) one end and end face, is provided with ramp down angle.
4. a kind of Sewing machines swinging axle hermetically-sealed construction according to claim 1, is characterized in that, described swing gap is between 1.5mm-3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474687.3U CN203411776U (en) | 2013-08-06 | 2013-08-06 | Sealing structure of swinging shaft of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474687.3U CN203411776U (en) | 2013-08-06 | 2013-08-06 | Sealing structure of swinging shaft of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203411776U true CN203411776U (en) | 2014-01-29 |
Family
ID=49974680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320474687.3U Expired - Fee Related CN203411776U (en) | 2013-08-06 | 2013-08-06 | Sealing structure of swinging shaft of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203411776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-08-06 CN CN201320474687.3U patent/CN203411776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20200806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |