CN208632787U - Sewing machine and its sewing machine axle sleeve - Google Patents
Sewing machine and its sewing machine axle sleeve Download PDFInfo
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- CN208632787U CN208632787U CN201821233212.4U CN201821233212U CN208632787U CN 208632787 U CN208632787 U CN 208632787U CN 201821233212 U CN201821233212 U CN 201821233212U CN 208632787 U CN208632787 U CN 208632787U
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- sewing machine
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- axle sleeve
- sleeve body
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Abstract
The utility model discloses a kind of sewing machine axle sleeves, including sleeve body and the flange platform being fixed on an axial end face of sleeve body, flange platform is radially projecting relative to sleeve body, the outer peripheral surface of sleeve body is docked with the positioning surface of flange platform, and groove is equipped at docking, the groove is the annular groove being arranged around the central axis of sleeve body, and groove is arc groove.In the sewing machine bearing, groove is arc groove, when by extraneous stress, since the groove does not have wedge angle, it can reduce stress concentration when by the active force loaded, it is not in flange platform deformation failure situation in the prior art, identical material stress concentrates improvement obvious, and risk of breakage is lower.In addition, interior sewing arbor set risk of breakage is lower the invention also discloses a kind of sewing machine including above-mentioned sewing machine axle sleeve.
Description
Technical field
The utility model relates to technical field of sewing equipment, in particular to a kind of sewing machine axle sleeve.In addition, the utility model
Further relate to a kind of sewing machine including above-mentioned sewing machine axle sleeve.
Background technique
In industrial sewing machine, it is detailed in Fig. 1 and Fig. 2, common axle sleeve includes sleeve body 01 and flange platform 02.Wherein,
The required precision of axle sleeve outer peripheral surface is high, needs to carry out post-processing, thus usually requires design escape 012, to guarantee processing
It is convenient for withdrawing when in place, and guarantees to be close in assembly with adjacent parts end face.Wherein, the outer peripheral surface of sleeve body 01 is cooperation
Cylinder 011, escape 012 are typically designed on cooperation cylinder 011, radial deeply along cooperation cylinder 011.
The axle sleeve designed using this escape 012, during assembling, the load effect of application is in axle sleeve left end
Face, when active force is transmitted at escape 012, the section of escape 012 is rectangle, in two wedge angle positions of escape 012
013, which generates stress, concentrates, and please refers to the stress distribution area 014 in Fig. 3 and Fig. 4, so that deformation at flange platform 02 be made even to be broken
Failure.Further, the fracture of axle sleeve, which will affect, matches component with the axle sleeve and normally realizes function.
Therefore, the risk for how reducing axle sleeve fracture, is a technical problem that technical personnel in the field need to solve at present.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of sewing machine axle sleeve, risk of breakage is lower.This is practical new
The another object of type is to provide a kind of sewing machine including above-mentioned sewing machine axle sleeve, and interior sewing arbor set risk of breakage is lower.
To achieve the above object, the utility model provides the following technical solutions:
A kind of sewing machine axle sleeve, including sleeve body and the flange being fixed on an axial end face of the sleeve body
Platform, the flange platform is radially projecting relative to the sleeve body, the outer peripheral surface of the sleeve body and the flange platform
Positioning surface docking, and groove is equipped at docking, the groove is the annular groove being arranged around the central axis of the sleeve body, institute
Stating groove is arc groove.
Preferably, the groove is set on the positioning surface, and groove groove inner edge in the radial direction is the axis
Cover the butted line between the outer peripheral surface and the positioning surface of ontology.
Preferably, the positioning surface is perpendicular to axial plane.
Preferably, the axial end face of the flange platform far from the sleeve body includes the load for being set to middle part radially
Acting surface and mating surface set on the load effect face periphery；Radially, the load effect face and the mating surface
Boundary line is located at the inside of the butted line.
Preferably, the load effect face is perpendicular to axial plane, and the mating surface is towards the sleeve body
The horn-like face of opening.
Preferably, glue is equipped in the groove.
Preferably, the outer peripheral surface of the sleeve body is cylindrical surface.
Preferably, the flange platform and the sleeve body are integrally formed.
A kind of sewing machine, including crank, the axle sleeve being sheathed on outside the crank and the casing being sheathed on outside the axle sleeve, institute
Stating sewing machine axle sleeve is the sewing machine axle sleeve as described in above-mentioned any one；The sleeve body of the axle sleeve far from flange platform one
End is butted on the shaft shoulder of the crank, and the sleeve body and the casing are interference fitted, the crank and the axle sleeve sheet
Body space cooperation；Axial end face of the flange platform far from the sleeve body is concordant with the free end end face of the crank, institute
The positioning surface for stating flange platform is butted on the surface of the casing, and the free end end face of the crank is connected with lock-screw, the lock
Flange platform described in the nut compressing of tight screw is in the crank.
Sewing machine axle sleeve provided by the utility model includes sleeve body and the axial end face for being fixed at sleeve body
On flange platform, flange platform is radially projecting relative to sleeve body, the positioning surface pair of the outer peripheral surface of sleeve body and flange platform
It connects, and is equipped with groove at docking, groove is the annular groove being arranged around the central axis of sleeve body, and groove is arc groove.
In the sewing machine bearing, groove is arc groove, when by extraneous stress, since the groove does not have horn structure,
It can reduce stress concentration when by load effect, be not in flange platform deformation failure situation in the prior art, it is identical
Material stress concentrates improvement obvious, and risk of breakage is lower.
Sewing machine provided by the utility model including above-mentioned sewing machine axle sleeve, in sewing arbor set risk of breakage compared with
It is low.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the cross-sectional view of sewing machine axle sleeve in the prior art；
Fig. 2 is the partial sectional view of sewing machine axle sleeve in the prior art；
Fig. 3 is the first partial stress distribution cross-sectional view of sewing machine axle sleeve in the prior art；
Fig. 4 is the second local stress distribution cross-sectional view of sewing machine axle sleeve in the prior art；
Fig. 5 provides the cross-sectional view of sewing machine axle sleeve by the utility model；
Fig. 6 provides the partial sectional view of sewing machine axle sleeve by the utility model；
Fig. 7 provides the first partial stress distribution cross-sectional view of sewing machine axle sleeve by the utility model；
Fig. 8 is provided partial sectional view when the first groove is arranged in sewing machine axle sleeve by the utility model；
Fig. 9 is provided partial sectional view when second of groove is arranged in sewing machine axle sleeve by the utility model；
Figure 10 is provided partial sectional view when the third groove is arranged in sewing machine axle sleeve by the utility model；
Figure 11 is provided partial sectional view when the 4th kind of groove is arranged in sewing machine axle sleeve by the utility model；
Figure 12 is provided partial sectional view when the 5th kind of groove is arranged in sewing machine axle sleeve by the utility model；
Figure 13 is provided partial sectional view when the 6th kind of groove is arranged in sewing machine axle sleeve by the utility model；
Figure 14 is provided partial sectional view when the 7th kind of groove is arranged in sewing machine axle sleeve by the utility model；
Figure 15 provides the second local stress distribution cross-sectional view of sewing machine axle sleeve by the utility model；
Figure 16 provides the partial sectional view of sewing machine by the utility model；
Figure 17 provides the structure chart of crank in sewing machine by the utility model.
In Fig. 1 to Fig. 4: 01- sleeve body, 011- cooperate cylinder, 012- escape, 013- wedge angle position, 014- stress
Distributed area, 02- flange platform；
Fig. 5 is into Figure 17: 1- sleeve body, 11- outer peripheral surface, 2- flange platform, 21- positioning surface, 22- groove, 23- glue,
24- boundary line, 25- stress distribution area, 26- groove inner edge, 27- mating surface, 28- load effect face, 3- crank, the 31- shaft shoulder,
32- free end end face, 4- casing, 5- lock-screw, F- pressure, P- pressure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The core of the utility model is to provide a kind of sewing machine axle sleeve, and risk of breakage is lower.The utility model it is another
Core is to provide a kind of sewing machine including above-mentioned sewing machine axle sleeve, and interior sewing arbor set risk of breakage is lower.
In a kind of specific embodiment of the provided sewing machine axle sleeve of the utility model, referring to FIG. 5, including sleeve body 1
With the flange platform 2 on the axial end face for being fixed at the sleeve body 1.Wherein, flange platform 2 is relative to 1 edge of sleeve body
Radially protruding.The outer peripheral surface 11 of sleeve body 1 is docked with the positioning surface 21 of flange platform 2, and groove 22, the groove are equipped at docking
22 annular groove to be arranged around the central axis of sleeve body 1, and the groove 22 is arc groove.The groove 22 can be used as withdrawing
Slot.Wherein, positioning surface 21 be flange platform 2 on close to 1 side of sleeve body axial end face, correspondingly, on flange platform 2 with positioning
The opposite another axial end face in face 21 is the axial end face far from sleeve body 1.
It should be noted that the groove 22 is that arc groove refers to that the axial cross section of the groove 22 is to be located at central axis
The arcuate line segment of two sides, arcuate line segment be everywhere equal rounding off do not have wedge angle line segment, specific radian can there are many
Set-up mode, Fig. 8 to Figure 14 illustrate wherein 7 kinds of set-up modes, and radian the application specific for arc is not especially limited.
In the present embodiment, it is detailed in Fig. 6 and Fig. 7, groove 22 is arc groove, when by extraneous stress, since the groove does not have
There is horn structure, can reduce stress concentration when by load effect, Fig. 7 shows stress distribution area 25, is not in existing
There is the 2 deformation failure situation of flange platform in technology, identical material stress concentrates improvement obvious, and risk of breakage is lower.
On the basis of the above embodiments, groove 22 can be set on positioning surface 21, and groove 22 is in the radial direction recessed
Slot inner edge 26 is the butted line between the outer peripheral surface 11 and positioning surface 21 of sleeve body 1.Referring to FIG. 6, the groove 22 setting exists
On positioning surface 21, and the groove 22 surrounds and is close to the setting of outer peripheral surface 11 of sleeve body 1.Preferably, which is flat
Face and perpendicular to axial direction, 11 rounding off of outer peripheral surface of groove 22 and sleeve body 1 and perpendicular to positioning surface 21 along it is axial deeply.
In the present embodiment, groove 22 is arranged on flange platform 2, in processing, powder metallurgy pressing moulding process can be used by groove
22 with 2 one-pass molding of flange platform, without as needing the post-processing escape on sleeve body 1 in the prior art, and to using
The plasticity requirements of material reduce, and workable material ranges are wider.Certainly, on the basis of other embodiments, groove 22 may be used also
To be arranged on the outer peripheral surface 11 of sleeve body 1.
On the basis of the above embodiments, the axial end face on flange platform 2 far from sleeve body 1 may include radially
The mating surface 27 in the load effect face 28 set on middle part and the periphery set on the load effect face 28.Radially, load effect
The boundary line 24 of face 28 and mating surface 27 is located at the inside of the outer peripheral surface 11 of sleeve body 1 and the butted line of flange platform 2, that is, will
The boundary line 24 of load effect face 28 and mating surface 27 is translated axially towards butted line, when being moved at butted line, the friendship
Boundary line 24 is by portion including docking coil.Wherein, the axial end face on flange platform 2 far from sleeve body 1 is on flange platform 2 and fixed
The axially opposite end face of plane 21.
It is detailed in Fig. 5, mating surface 27 and load effect face 28 can be defined for bearing axial force in load effect face 28
The division of labor, under same load effect, being applied to the axial force on load effect face 28 can be main in the transmittance process of power
It acts on sleeve body, avoids part failure occur in 22 regional stress of groove concentration in assembling process.
Specifically, load effect face 28 can be for perpendicular to axial plane, mating surface 27 can be towards sleeve body 1
The horn-like face of opening, referring to FIG. 5, passing through such set-up mode, it is ensured that between load effect face 28 and mating surface 27
Clear-cut, mating surface 27 retract towards sleeve body 1 relative to load effect face 28, are conducive to avoid 27 stress of mating surface.
Based on any of the above embodiments, it can be equipped with glue 23 in groove 22, be specifically as follows anaerobic adhesive.Glue
23 can be used for connecting the axle sleeve and other fit structures, keep axle sleeve more securely attached, guarantee that use process bottom bracket axle does not go out
Now loosen.
Based on any of the above embodiments, the outer peripheral surface 11 of sleeve body 1 can be cylindrical surface.
Based on any of the above embodiments, flange platform 2 can be integrally formed with sleeve body 1, keep axle sleeve integrally strong
Degree is higher, and can reduce processing cost.Wherein, using in powder metallurgy pressing mode process, groove 22 is being processed
When, groove 22 is parallel to powder metallurgy pressing shaping and demoulding direction, and groove 22 is not necessarily to post-processing, and production efficiency is higher, more economical.
In addition to above-mentioned sewing machine axle sleeve, a kind of sewing machine that the utility model also provides please refers to Figure 16 and Figure 17, the seam
The machine of threading includes crank 3, the axle sleeve being set in outside the crank 3 and the casing 4 being set in outside the axle sleeve.Wherein, which can be
The sewing machine axle sleeve provided in any of the above embodiment.The sleeve body 1 of the axle sleeve is butted on crank 3 far from one end of flange platform 2
The shaft shoulder 31 on, sleeve body 1 and casing 4 are interference fitted, crank 3 and 1 clearance fit of sleeve body, to guarantee that crank 3 can
The flexible rotating in sleeve body 1.The free end end face 32 of flange platform 2 axial end face far from the sleeve body 1 and crank 3
Concordantly, the positioning surface 21 of flange platform 2 is butted on the surface of casing 4, and the free end end face 32 of crank 3 is connected with lock-screw 5, locking
The nut compressing flange platform 2 of screw 5 is in crank 3.Refer to the prior art for the structure of other each sections of the sewing machine, herein not
It repeats again.
In the sewing machine, the positioning surface 21 of flange platform 2 positions casing 4.Since axle sleeve is not vulnerable to external impacts
There is deformation to be even broken, stationkeeping ability can be influenced because of damage to avoid axle sleeve, it is ensured that axle sleeve is in the sewing machine
Positioning accuracy, and can guarantee the realization of 3 function of crank.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Sewing machine provided by the utility model and its sewing machine axle sleeve are described in detail above.It is used herein
Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help
Understand the method and its core concept of the utility model.It should be pointed out that for those skilled in the art,
Under the premise of not departing from the utility model principle, several improvements and modifications can be made to this utility model, these improve and
Modification is also fallen into the protection scope of the utility model claims.
Claims (9)
1. a kind of sewing machine axle sleeve including sleeve body (1) and is fixed on an axial end face of the sleeve body (1)
Flange platform (2), which is characterized in that the flange platform (2) is radially projecting relative to the sleeve body (1), the axle sleeve sheet
The outer peripheral surface (11) of body (1) is docked with the positioning surface (21) of the flange platform (2), and is equipped with groove (22) at docking, described recessed
Slot (22) is the annular groove being arranged around the central axis of the sleeve body (1), and the groove (22) is arc groove.
2. sewing machine axle sleeve according to claim 1, which is characterized in that the groove (22) is set to the positioning surface (21)
On, and the groove (22) groove inner edge (26) in the radial direction is the outer peripheral surface (11) of the sleeve body (1) and described fixed
Butted line between plane (21).
3. sewing machine axle sleeve according to claim 2, which is characterized in that the positioning surface (21) is to put down perpendicular to axial
Face.
4. sewing machine axle sleeve according to claim 2, which is characterized in that the flange platform (2) is far from the sleeve body
(1) axial end face includes radially set on the load effect face (28) at middle part and set on load effect face (28) periphery
Mating surface (27)；Radially, the boundary line (24) of the load effect face (28) and the mating surface (27) is located at described
The inside of butted line.
5. sewing machine axle sleeve according to claim 4, which is characterized in that the load effect face (28) is perpendicular to axial direction
Plane, the mating surface (27) is the horn-like face being open towards the sleeve body (1).
6. according to claim 1 to sewing machine axle sleeve described in 5 any one, which is characterized in that be equipped in the groove (22)
Glue (23).
7. sewing machine axle sleeve according to claim 6, which is characterized in that the outer peripheral surface (11) of the sleeve body (1) is
Cylindrical surface.
8. sewing machine axle sleeve according to claim 6, which is characterized in that the flange platform (2) and the sleeve body (1)
It is integrally formed.
9. a kind of sewing machine, which is characterized in that including crank (3), be sheathed on the axle sleeve of the crank (3) outside and be sheathed on described
Casing (4) outside axle sleeve, the sewing machine axle sleeve are sewing machine axle sleeve described in claim 1 to 8 any one；The axle sleeve
Sleeve body (1) be butted on the shaft shoulder (31) of the crank (3) far from the one end of flange platform (2), and the sleeve body (1)
It is interference fitted with the casing (4), the crank (3) and the sleeve body (1) clearance fit；The flange platform (2) is separate
The axial end face of the sleeve body (1) is concordant with free end end face (32) of the crank (3), and flange platform (2) determine
Plane (21) is butted on the surface of the casing (4), and the free end end face of the crank (3) is connected with lock-screw (5), the lock
Flange platform (2) Yu Suoshu crank (3) described in the nut compressing of tight screw (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233212.4U CN208632787U (en) | 2018-08-01 | 2018-08-01 | Sewing machine and its sewing machine axle sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821233212.4U CN208632787U (en) | 2018-08-01 | 2018-08-01 | Sewing machine and its sewing machine axle sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208632787U true CN208632787U (en) | 2019-03-22 |
Family
ID=65740373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821233212.4U Active CN208632787U (en) | 2018-08-01 | 2018-08-01 | Sewing machine and its sewing machine axle sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208632787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856496A (en) * | 2022-06-30 | 2022-08-05 | 四川华宇石油钻采装备有限公司 | Cyclone filtering integrated sand remover |
-
2018
- 2018-08-01 CN CN201821233212.4U patent/CN208632787U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856496A (en) * | 2022-06-30 | 2022-08-05 | 四川华宇石油钻采装备有限公司 | Cyclone filtering integrated sand remover |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |