CN201598411U - Sealing device for drive rod of sewing machine - Google Patents
Sealing device for drive rod of sewing machine Download PDFInfo
- Publication number
- CN201598411U CN201598411U CN2009202954396U CN200920295439U CN201598411U CN 201598411 U CN201598411 U CN 201598411U CN 2009202954396 U CN2009202954396 U CN 2009202954396U CN 200920295439 U CN200920295439 U CN 200920295439U CN 201598411 U CN201598411 U CN 201598411U
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- Prior art keywords
- drive rod
- sealing device
- oil seal
- guide piece
- type
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Abstract
The utility model discloses a sealing device for the drive rod of a sewing machine. The sealing device comprises a guide piece and an oil seal; a drive rod conducting reciprocating motions passes through the guide piece and the oil seal; a circumference-shaped convex part is designed on the inner wall at the rear end of the guide piece; the oil seal comprises a rubber seal body and an L-shaped metal framework; a main lip is arranged on the rubber seal body; a clamping tongue is arranged at the back part of the main lip; the clamping tongue and the L-shaped metal framework surround a concave hollow cavity; and the circumference-shaped convex part at the rear end of the guide piece can be correspondingly embedded in the concave hollow cavity. By adopting the sealing device, the oil seal serving as a part is mounted on the guide piece, so that all that is needed is to replace the oil seal when the oil seal is severely worn; and the guide piece is connected with the concave hollow cavity of the oil seal in an embedding connection manner through the circumference-shaped convex part at the rear end, so as to avoid easy loosening phenomenon of the oil seal.
Description
Technical field
The utility model relates to a kind of textile machine member, is specifically related to a kind of Sewing machines drive rod sealing device.
Background technology
Existing sewing machine generally all has the drive rod that drives suture needle or bearded needle, and this drive rod needs the back and forth movement that do not stop in the sewing process, therefore need increase lubricating oil in drive rod, to keep stable, the effectively work of drive rod internal mechanism; Simultaneously, regular meeting produces the dust that cloth material debris and mechanical movement bring in the sewing process, and these chips and dust enter machine intimate by the slit between the structure easily and influence machine works even destruction machine inner structure.So be necessary a kind of sealing device is installed on drive rod, can either prevent that the lubricating oil on the drive rod from leaking outside, can prevent that again external debris and dust from entering machine.
This position sealing device commonly used is to utilize basal part to be installed on the ways the common oil sealing member that has dust excluder lips at present, and the interference of interior perimembranous elasticity abuts on the outer peripheral face of this drive rod, therefore driven by shift reciprocately by this drive rod, form bearing surface in basal part and ways any, be used for the displacement of another axis direction in basal part and the ways is supported, when the ways of drive rod by tubular leads and driven by shift reciprocately by axis direction, oil sealing utilizes basal part to be installed on the ways, and the interior perimembranous elasticity of sealing abuts on the outer peripheral face of this drive rod, therefore driven by shift reciprocately by this drive rod, strike off the lubricating oil or the particulate that are attached to this drive rod surface.In basal part and ways, form bearing surface on another, be used for the displacement of another axis direction in basal part and the ways is supported that the bearing surface utilization prevents that at drive rod and containment member generation sliding friction basal part from carrying out displacement to ways by axis direction.
Above-mentioned oil sealing member, because abutting part can produce bigger consume because of drive rod moves repeatedly, so need regularly change member, and basal part must be changed together, again this oil sealing member for basal part and ways be with the elasticity butt as being connected, and drive rod high frequency ground moves repeatedly and causes basal part and ways to break away from easily.So the sealing device remains to be improved to avoid the generation of above-mentioned situation.
Summary of the invention
Technical problem to be solved in the utility model is a kind of Sewing machines drive rod sealing device that provides at above-mentioned present situation, compared with prior art, can save the part exchanging cost and avoid the oil sealing phenomenon that easily gets loose.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: Sewing machines drive rod sealing device, comprise guide and oil sealing, be equipped with reciprocating drive rod in described guide and the described oil sealing, it is characterized in that: described guide tip designs has " L " type circumference type projection; Described oil sealing comprises rubbery sealed body and " L " type metallic framework, described rubbery sealed body is provided with a main lip, the back of described main lip has installed block tongue, described block tongue and described " L " type metallic framework surround a matrix cavity, " L " type circumference type projection that described matrix cavity can corresponding chimeric described guide end.
As preferably, described block tongue contact " L " type circumference type projection one side is planar design, is inclined design away from " L " type circumference type projection one side, and circumference type protuberance can conveniently snap in the matrix cavity and is difficult for skidding off when being beneficial to install.
As preferably, also be provided with one or more dust excluder lips on the described rubbery sealed body, enter member in order to prevent external debris and dust.
As preferably, be provided with spring between the main lip of described rubbery sealed body and the block tongue.
During installation, earlier oil sealing is installed on the guide, the circumference type protuberance that is about to described guide end is stuck in the matrix cavity of described oil sealing, drive rod is installed on described guide inside again, and its main lip of described oil sealing and dust excluder lips are interference fit with drive rod all.
The beneficial effects of the utility model are: adopt the sealing device, oil sealing is installed on the guide as parts, only need change oil sealing and get final product when serious wear; Guide is by terminal circumference type protuberance and chimeric connection of oil sealing matrix cavity, avoided the oil sealing phenomenon that easily gets loose.
Description of drawings
Fig. 1 is the utility model cross-sectional view.
Fig. 2 is Fig. 1 P place structure for amplifying schematic diagram.
The specific embodiment
As shown in Figure 1 and Figure 2, Sewing machines drive rod sealing device comprises guide 1 and oil sealing 2, is equipped with reciprocating drive rod 3 in described guide 1 and the described oil sealing 2, and described guide 1 tip designs has " L " type circumference type projection 11; Described oil sealing 2 comprises rubbery sealed body 21 and " L " type metallic framework 22, described rubbery sealed body 21 is provided with a main lip 211, the back of described main lip 211 has installed block tongue 212, described block tongue 212 surrounds a matrix cavity with described " L " type metallic framework 22, described matrix cavity can corresponding chimeric described guide 1 end " L " type circumference type projection 11, described block tongue 212 contact " L " type circumference type projectioies 11 one sides are planar design, away from " L " type circumference type projection 11 one sides is inclined design, also be provided with one or more dust excluder lips 213 on the described rubbery sealed body, described main lip 211, dust excluder lips 213 is interference fit with drive rod 3, is provided with a spring 214 between the main lip 211 of described rubbery sealed body 21 and the block tongue 212.
Claims (4)
1. Sewing machines drive rod sealing device, comprise guide (1) and oil sealing (2), be equipped with reciprocating drive rod (3) in described guide (1) and the described oil sealing (2), it is characterized in that: described guide (1) tip designs has " L " type circumference type projection (11); Described oil sealing (2) comprises rubbery sealed body (21) and " L " type metallic framework (22), described rubbery sealed body (21) is provided with a main lip (211), the back of described main lip (211) has installed block tongue (212), described block tongue (212) surrounds a matrix cavity with described " L " type metallic framework (22), and described matrix cavity can terminal " L " type circumference type projection (11) of corresponding chimeric described guide (1).
2. Sewing machines drive rod sealing device as claimed in claim 1 is characterized in that: described block tongue (212) contact " L " type circumference type projection (11) one side is planar design, is inclined design away from " L " type circumference type projection (11) one side.
3. Sewing machines drive rod sealing device as claimed in claim 1 is characterized in that: described rubbery sealed body (21) is provided with one or more dust excluder lips (213).
4. Sewing machines drive rod sealing device as claimed in claim 1 is characterized in that: be provided with spring (214) between the main lip (211) of described rubbery sealed body (21) and the block tongue (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202954396U CN201598411U (en) | 2009-12-26 | 2009-12-26 | Sealing device for drive rod of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202954396U CN201598411U (en) | 2009-12-26 | 2009-12-26 | Sealing device for drive rod of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201598411U true CN201598411U (en) | 2010-10-06 |
Family
ID=42809462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202954396U Expired - Fee Related CN201598411U (en) | 2009-12-26 | 2009-12-26 | Sealing device for drive rod of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201598411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734469A (en) * | 2011-04-01 | 2012-10-17 | 江门市鑫辉密封科技有限公司 | Rotation assembling oil seal for being used under middle and high pressure |
-
2009
- 2009-12-26 CN CN2009202954396U patent/CN201598411U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734469A (en) * | 2011-04-01 | 2012-10-17 | 江门市鑫辉密封科技有限公司 | Rotation assembling oil seal for being used under middle and high pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dongyang Chuangyi Knitting Machinery Co., Ltd. Assignor: Wu Xinjun Contract record no.: 2011330001124 Denomination of utility model: Sealing device for drive rod of sewing machine Granted publication date: 20101006 License type: Exclusive License Record date: 20110902 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20101226 |