CN204474934U - Sewing machines main frame - Google Patents
Sewing machines main frame Download PDFInfo
- Publication number
- CN204474934U CN204474934U CN201420799291.0U CN201420799291U CN204474934U CN 204474934 U CN204474934 U CN 204474934U CN 201420799291 U CN201420799291 U CN 201420799291U CN 204474934 U CN204474934 U CN 204474934U
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- CN
- China
- Prior art keywords
- fixed cover
- sewing machines
- bearing
- main frame
- casing
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- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model relates to Sewing machines field, essentially disclose a kind of Sewing machines main frame, comprise main shaft, transmission device and handwheel, described transmission device fixed jacket is on described main shaft, described transmission device is arranged in chassis cavity, described handwheel fixed jacket is in one end of described main shaft, and it is outside that described handwheel is positioned at described casing; Described main shaft is fixed on the housing by the first fixed cover and the second fixed cover, be placed on described main shaft in described second fixed cover is fixing, described second fixed cover overcoat has bearing, described bearing outside is provided with described first fixed cover, bearing seal is provided with between described first fixed cover and described casing, also be provided with shaft seal between described first fixed cover and described main shaft, described first fixed cover and described shaft seal are all adjacent with described handwheel.The good effect that the utility model brings is: this Sewing machines main frame, by the improvement to its structure, effectively prevent Sewing machines inner chamber lubricating oil and leaks.
Description
Technical field
The utility model relates to Sewing machines field, especially relates to a kind of sewing machine component.
Background technology
Sewing device as clothes or house fabric is still based on Sewing machines now.Usual machine spindle is fixed on sewing machine case by fixed cover.Sewing machines main frame rotating speed when normal work is high, so the part of Sewing machines main frame inside can be made to wear and tear.Generally speaking the position that fixed cover contacts with Sewing machines main frame is processed into by the metallic copper that hardness is higher, but along with the increase of Sewing machines host work time and increasing of rotating speed, still very easily wear and tear at the metallic copper of fixed cover internal layer, thus cause just producing gap between fixed cover and Sewing machines main frame, finally cause the oil leak phenomenon of sewing machine case inside.
Those skilled in the art is generally avoid leaking outside of lubricating oil in Sewing machines internal cavity by arranging simple oil-sealing arrangement on Sewing machines main frame for the measure that this problem is taked.But the program the problem of unresolved Sewing machines oil leak when running up.
As can be seen here, how to work out a kind of Sewing machines main frame, lubricating oil in Sewing machines internal cavity can be avoided to leak by the improvement of Sewing machines main machine structure, be current those skilled in the art's problem demanding prompt solution.
Utility model content
In order to solve the problem, the utility model provides a kind of Sewing machines main frame, and it prevents Sewing machines inner chamber lubricating oil from leaking by improving Sewing machines host part to arrange.
The technical solution adopted in the utility model is a kind of Sewing machines main frame, comprise main shaft, transmission device and handwheel, be placed on described main shaft in described transmission device is fixing, described transmission device is arranged in chassis cavity, described main shaft stretches out described chassis cavity away from one end of described transmission device, and is connected with described handwheel.Described Sewing machines main frame also comprises the first fixed cover be sleeved on successively on described main shaft, bearing and the second fixed cover, described second fixed cover is positioned at described casing, described first fixed cover is arranged between described casing and described handwheel, described first fixed cover on the sidewall being located at described casing, and stops described bearing along described main shaft axially to described hand wheel movements.
Further, described first fixed cover is provided with a circle protruding, a described circle projection stretches into described chassis cavity and contacts with described chassis sidewall.
Further, the excircle that a described circle is protruding is provided with bearing seal, and described in described bearing seal, chassis sidewall contacts.
Further, described bearing is arranged in the protruding inner chamber surrounded of a described circle, and wherein said bearing is inlaid on the shell wall of described casing by described first fixed cover.
Further, the cavity that described first fixed cover is arranged in the outside one end of described casing is embedded with shaft seal, and described shaft seal and described coaxial bearing line are arranged.
Further, described shaft seal is outside framework oil seal.
Further, described bearing seal is O RunddichtringO.
Further, described second fixed cover points to one end of described bearing, embed in described bearing bore diameter, the two is interference fit.
Further, described shaft seal and described first fixed cover are interference fit.
Further, described first fixed cover and the second fixed cover are steel simultaneously.
A kind of Sewing machines main frame of the utility model, compared with prior art has the following advantages:
The first, this Sewing machines main frame, by being respectively equipped with second fixing and the first fixed cover at Bearing inner and outside, reduces the abrasion condition of these two fixed covers, and these two fixed cover radial journal bearings, makes shaft strength even, smooth running; These measures avoid by the not good problem of the caused sealing of wearing and tearing, thus effectively prevent the leakage of lubricating oil in Sewing machines inner chamber;
The second, be also provided with shaft seal between this Sewing machines main frame and first fixed cover, thus reduce the probability of oil leak in Sewing machines inner chamber further;
3rd, this Sewing machines main frame by making sealing between described first fixed cover and described chassis contact face more good at the first fixed cover outer surface sheathed O RunddichtringO, thus effectively avoids described casing internal lubricating oil to leak;
4th, the utility model only uses a kind of metal material as preparations such as steel by least adopting two kinds of metal materials to be improved to the fixed cover in Sewing machines main frame in prior art, to be unified because of the first fixed cover and the second fixed cover material like this, so both enhancings and the matching relationship of main shaft, bearing and casing, reduce the probability leaked; In addition the unification of material can also save production cost.
Accompanying drawing explanation
Fig. 1 is part sectioned view of the present utility model
Fig. 2 is explosive view of the present utility model
Fig. 3 is the structural representation of the first fixed cover in the utility model
Fig. 4 is the part sectioned view of prior art
Fig. 5 is the explosive view of prior art
In figure:
1, handwheel 2, first fixed cover 3, shaft seal
4, bearing seal 5, bearing 6, second fixed cover
7, transmission device 8, casing 9, main shaft
10, pad 11, needle bearing 12, former fixed cover
13, sealing ring
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1,2 and 3, a kind of Sewing machines main frame, comprises main shaft 9, transmission device 7 and handwheel 1, and be placed on described main shaft 9 in described transmission device 7 is fixing, described transmission device 7 is arranged in casing 8 inner chamber.Described main shaft 9 stretches out described casing 8 inner chamber away from one end of described transmission device 7, and is connected with described handwheel 1.Described Sewing machines main frame also comprises the first fixed cover 2 be sleeved on successively on described main shaft 9, bearing 5 and the second fixed cover 6, described second fixed cover 6 is positioned at described casing 8, described first fixed cover 2 is arranged between described casing 8 and described handwheel 1, described first fixed cover 2 on the sidewall being located at described casing 8, and stops described bearing 5 axially to move to described handwheel 1 along described main shaft 9.It should be noted that, described handwheel 1 does not directly contact with described first fixed cover 2, leaves space, described in preventing, produce wearing and tearing between the two between both.Wherein, in described handwheel 1, be provided with V-type groove, just can by motor for described handwheel 1 provides rotary power after described V-type groove puts driving belt.Because described handwheel 1 and described main shaft 9 are for being fixedly connected with, so the rotary motion of described handwheel 1 can drive described main shaft 9 that synchronous rotary motion occurs.It should be noted that, the described transmission device 7 in the present embodiment is worm screw, and the Main Function of described worm screw is motion between transmission two alternating axis and power.
Described main shaft 9 is fixed on described casing 8 by the first fixed cover 2 and the second fixed cover 6.Be placed on described main shaft 9 in described second fixed cover 6 is fixing.Described first fixed cover 2 is provided with a circle protruding, a described circle projection stretches into described casing 8 inner chamber and contacts with described casing 8 sidewall, so just itself is fixed on described casing 8 by described first fixed cover 2.In the present embodiment, described second fixed cover 6 is fixedly connected with by screw fastener with described main shaft 9.Adopting screw to carry out connecting comparatively simple, and described second fixed cover 6 can be made to be fixedly connected to form an entirety with described main shaft 9, avoiding wearing and tearing because there is relative motion between described second fixed cover 6 and described main shaft 9.Bearing 5 is arranged in the protruding inner chamber surrounded of a described circle, and wherein said bearing 5 is inlaid on the shell wall of described casing 8 by described first fixed cover 2, makes described bearing 5 with described first fixed cover 2 on support is fixed on described casing 8.Wherein, described second fixed cover 6 pointing to one end of described bearing 5, embed in described bearing 5 internal diameter, is interference fit both described.Described like this second fixed cover 6 is relative static conditions with the inner ring of described bearing 5, effectively prevents from making both wear and tear between described second fixed cover 6 and described bearing 5 because of relative motion.When this Sewing machines main frame is in running order, the inner surface of described bearing 5 can rotate along with the rotation of described main shaft 9.Described bearing 5 is rolling bearing, rolling bearing can change relative motion into rolling, namely the rotational kinetic energy of described rolling bearing inner ring can pass to the ball of described rolling bearing inside, and the housing washer being positioned at described ball outside so just remains static.In other words, described housing washer and described first fixed cover 2 geo-stationary, so just decrease described second fixed cover 6, wearing and tearing between described rolling bearing and described first fixed cover 2 to greatest extent.The possibility of relative motion is there is in order to reduce described first fixed cover 2 and described bearing 5 outer ring to greatest extent, described first fixed cover 2 is fixed by adhesives with the outer ring of described bearing 5, described like this first fixed cover 2 forms an entirety with the outer ring of described bearing 5, completely eliminates the risk occurring because of relative motion between described second fixed cover 6 and described bearing 5 to wear and tear.Wherein, the excircle that the described circle in described first fixed cover 2 is protruding is provided with bearing seal 4, and described in described bearing seal 4, casing 8 sidewall contacts, to ensure having good sealing between described first fixed cover 2 and described casing 8.Described bearing seal 4 is O RunddichtringO.Because described O RunddichtringO is standard component, be also convenient to carry out Matching installation with described first fixed cover 2 while making this O RunddichtringO possess good sealing property between described first fixed cover 2 of guarantee and described casing 8.The cavity that described first fixed cover 2 is arranged in described outside one end of casing 8 is embedded with shaft seal 3, and described shaft seal 3 is coaxially set with described bearing 5.The setting of this shaft seal 3 is also to prevent the lubricating oil of described casing 8 inside from leaking between described first fixed cover 2 inner chamber and described main shaft 9.Described shaft seal 3 and described first fixed cover 2 are interference fit, and the lubricating oil that this fit system greatly reduces described casing 8 inside is from the Leakage probability between the fit clearance of described main shaft 9 and described first fixed cover 2.Described shaft seal 3 is outside framework oil seal, and elastomeric material such as the rubber comprising built-in metal spring and outside is formed, and this material is prevent the leakage of described Sewing machines inner chamber lubricating oil from providing safeguard.
Figure 4 and 5 are depicted as Sewing machines main frame of the prior art.The utility model compared with prior art has the following advantages: be first there is relative motion between former fixed cover 12 of the prior art and described main shaft 9, so the inner surface of described former fixed cover 12 is made up of wear-resisting metallic copper.However, between described former fixed cover 12 and described main shaft 9, long relative motion certainly will cause the wearing and tearing of metallic copper, thus produces gap between described former fixed cover 12 and described main shaft 9, and then causes the leakage of described casing 8 internal lubrication oil; Fixed cover after improvement is made up of described first fixed cover 2 and described second fixed cover 6 and the described rolling bearing be positioned between the two, utilize described rolling bearing to make described first fixed cover 2 and described rolling bearing and be relative static conditions between described rolling bearing and described second fixed cover 6, thus reduce the wearing and tearing between described three.Secondly, because described fixed cover structure changes, so the steel preparation that all use cost is lower of the first fixed cover 2 in the utility model and the second fixed cover 6, without the need to the metallic copper that use cost is higher, so both simplify the processing technology of described first fixed cover 2 and described second fixed cover 6, again save the production cost of described first fixed cover 2 and described second fixed cover 6.Finally, what adopt in prior art is needle bearing 11, and described needle bearing 11 has higher load-taking capacity, and its Main Function prevents described worm screw 7 from causing wearing and tearing when rotating to the described former 12 cover cross sections of fixing remained static.But because described needle bearing 11 is while the described worm screw 7 of reduction produces wearing and tearing to described former fixed cover 12, the needle roller of the rotation of described needle bearing 11 inside will produce the wearing and tearing of less degree to the described worm screw 7 be fixed on described main shaft 9 and the cross section being coated at the described former fixed cover 12 on described main shaft 9, pad 10 need be set in the both sides, front and back of described needle bearing 11 again for this reason, wear and tear to avoid the cross section of described needle bearing 11 to described worm screw 7 and described former fixed cover 12.And described worm screw 7 of the present utility model is all fixed on described main shaft 9 with described second fixed cover 6, described do not exist relative sliding between the two, so the utility model is without the need to installing described needle bearing 11.In addition, the Main Function of the described pad 10 between described former fixed cover 12 and described handwheel 1 is also reduce the degree of wear between described fixed cover 12 and described handwheel 1.It should be noted that, sealing ring 13 between described former fixed cover 12 and described handwheel 1 is prior art, its effect is identical with the shaft seal 3 of the Sewing machines main frame in the application, but described sealing ring 13 is preventing the effect in the leakage of described casing 8 internal lubrication oil obviously not as good as of the present utility model remarkably productive.The utility model improves from design of part and fit angle, inherently solves the problem of oil leak in described casing 8.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (10)
1. a Sewing machines main frame, comprise main shaft (9), transmission device (7) and handwheel (1), be placed on described main shaft (9) in described transmission device (7) is fixing, described transmission device (7) is arranged in casing (8) inner chamber, described main shaft (9) stretches out described casing (8) inner chamber away from one end of described transmission device (7), and be connected with described handwheel (1), it is characterized in that: also comprise the first fixed cover (2) be sleeved on successively on described main shaft (9), bearing (5) and the second fixed cover (6), described second fixed cover (6) is positioned at described casing (8), described first fixed cover (2) is arranged between described casing (8) and described handwheel (1), described first fixed cover (2) is on the sidewall being located at described casing (8), and stop described bearing (5) axially to move to described handwheel (1) along described main shaft (9).
2. Sewing machines main frame according to claim 1, it is characterized in that: described first fixed cover (2) is provided with a circle protruding, a described circle projection stretches into described casing (8) inner chamber and contacts with described casing (8) sidewall.
3. Sewing machines main frame according to claim 2, is characterized in that: the excircle that a described circle is protruding is provided with seal (4), and described seal (4) described casing (8) sidewall contacts.
4. Sewing machines main frame according to claim 2, it is characterized in that: described bearing (5) is arranged in the protruding inner chamber surrounded of a described circle, and wherein said bearing (5) is inlaid on the shell wall of described casing (8) by described first fixed cover (2).
5. Sewing machines main frame according to claim 2, it is characterized in that: the cavity that described first fixed cover (2) is arranged in described casing (8) outside one end is embedded with shaft seal (3), described shaft seal (3) and described bearing (5) are coaxially set.
6. Sewing machines main frame according to claim 5, is characterized in that: described shaft seal (3) is outside framework oil seal.
7. Sewing machines main frame according to claim 3, is characterized in that: described bearing seal (4) is O RunddichtringO.
8. Sewing machines main frame according to claim 2, is characterized in that: the upper one end pointing to described bearing (5) of described second fixed cover (6), embed in described bearing (5) internal diameter, the two is interference fit.
9. Sewing machines main frame according to claim 5, is characterized in that: described shaft seal (3) and described first fixed cover (2) are interference fit.
10. Sewing machines main frame according to claim 1, is characterized in that: described first fixed cover (2) and the second fixed cover (6) are steel simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799291.0U CN204474934U (en) | 2014-12-16 | 2014-12-16 | Sewing machines main frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799291.0U CN204474934U (en) | 2014-12-16 | 2014-12-16 | Sewing machines main frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204474934U true CN204474934U (en) | 2015-07-15 |
Family
ID=53630737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420799291.0U Expired - Fee Related CN204474934U (en) | 2014-12-16 | 2014-12-16 | Sewing machines main frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204474934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389122A (en) * | 2014-12-16 | 2015-03-04 | 天津华唐缝纫机制造有限公司 | Main unit of sewing machine |
| CN105401354A (en) * | 2015-10-13 | 2016-03-16 | 苏州科润织造有限公司 | Sealed bearing used for 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 |
-
2014
- 2014-12-16 CN CN201420799291.0U patent/CN204474934U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389122A (en) * | 2014-12-16 | 2015-03-04 | 天津华唐缝纫机制造有限公司 | Main unit of sewing machine |
| CN105401354A (en) * | 2015-10-13 | 2016-03-16 | 苏州科润织造有限公司 | Sealed bearing used for 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20161216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |