CN102447337A - Motor structure of sewing machine - Google Patents
Motor structure of sewing machine Download PDFInfo
- Publication number
- CN102447337A CN102447337A CN2011102561492A CN201110256149A CN102447337A CN 102447337 A CN102447337 A CN 102447337A CN 2011102561492 A CN2011102561492 A CN 2011102561492A CN 201110256149 A CN201110256149 A CN 201110256149A CN 102447337 A CN102447337 A CN 102447337A
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- CN
- China
- Prior art keywords
- motor
- sewing machine
- connector portions
- drive shaft
- motor body
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- Motor Or Generator Frames (AREA)
- Sewing Machines And Sewing (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a motor structure of a sewing machine, and provides a direct drive motor. The dimension of the sewing machine in mounting can be reduced, and furthermore mixing of foreign matters such as dirt into the inner part of the motor body can be prevented when the motor is detached from the sewing machine. In the motor structure of the sewing machine, a shielding component (26) which covers the motor body (18) is configured in the motor body (18) at a position which is closer to the mounting side of the sewing machine than a rotor (21) and a stator (22). The shielding component (26) can prevent mixing of the foreign matter into the motor body (18) when the motor (8) is detached from the sewing machine (1).
Description
Technical field
The present invention relates to drive the structure of the motor of sewing machine.
Background technology
Drive source as driving sewing machine generally adopts electro-motors such as clutch motor, servo motor.For industrial sewing machines; Is these electro-motors main flow in the past through belt or gear etc. are connected (connecting indirectly) with the main shaft of sewing machine mode; But the problem that has friction loss, noise; In recent years, improved the demand of the direct-connected so-called direct drive mode of main shaft of electro-motor and sewing machine (for example reference literature 1).
In document 1, the example that is connected direct CD-ROM drive motor (below call direct-drive motor) with existing known overseam sewing machine is disclosed.Be connected a end through the end of coupling, be delivered to machine spindle to the driving of motor drive shaft from the outstanding machine spindle of sewing support with the motor drive shaft of giving prominence to from motor body.Motor drive shaft can be supported on the motor body with being rotated, and carries out pivotal support by pair of bearings usually.
In document 1 disclosed example,, there is the problem that technology is coarse and take up room direct-drive motor long installation from the sewing machine side towards horizontal direction with stretching out.So in order to address this problem, structure of the direct-drive motor that has omitted a bearing and coupling and attaching method thereof is in the past also by known (for example reference literature 2).
In document 2 disclosed examples, motor drive shaft can carry out rotationally cantilever support on motor body, the sewing machine installation side opening of motor body.Motor drive shaft is by common bearing pivotal support.And, compare with document 1 disclosed example, owing to omitted a coupling and a bearing (and motor body that this bearing is installed), so can be when motor is installed correspondingly the width dimensions of sewing machine be shortened.
Patent documentation 1: No. 200420050772.8 communique of Chinese utility model (especially with reference to Fig. 3, Fig. 4)
Patent documentation 2: No. 200720192427.1 communique of Chinese utility model (especially with reference to Fig. 1, Fig. 2)
Summary of the invention
Direct-drive motor usually will be removed from sewing machine when when sewing machine is safeguarded or with other sewing machine, changing.Press the structure of the direct-drive motor of document 2, foreign matters such as dust may be sneaked into motor body inside from the installation portion of said motor body and sewing machine.In the motor body internal configurations stator that is made up of the motor winding and the rotor that is made up of magnet are arranged, exist because of sneaking into foreign matter and cause the problem of motor breakage or scaling loss.
Therefore problem of the present invention is providing a kind of direct-drive motor as purpose, the size when it can be sought to shorten sewing machine and installs, and sneak into motor body inside from the outside at foreign matters such as when sewing machine is pulled down, can not made dust.
The motor structure of the sewing machine of first aspect present invention is provided with: motor body, and it forms the shell and the sewing machine installation side opening of motor; Motor drive shaft, one of which end are outstanding and one distolaterally can carry out cantilever support rotationally by the bearing that is fixed in motor body at this from motor body, form connector portions at the other end; Rotor, it is fixed on the motor drive shaft in motor; And stator; Itself and this rotor disposes and is fixed on the motor body inner face in opposite directions; Said motor structure directly is connected with the main shaft of sewing machine through said connector portions, it is characterized in that, said motor structure is provided with curtain-shaped cover member; Said curtain-shaped cover member is configured in the sewing machine installation side from rotor and the stator in the motor, covers the said opening of motor body.
The characteristic of the motor structure of the sewing machine of second aspect present invention is that in first aspect present invention, said curtain-shaped cover member is provided with to be fixed on the installation portion on the motor body and to be formed and covers the axial discoid body of motor.
The characteristic of the motor structure of the sewing machine of third aspect present invention is; In second aspect present invention; The connector portions of said motor drive shaft is configured to from the said opening of motor body outstanding, is formed with slot part in the periphery of connector portions, and the front end of the body of said curtain-shaped cover member is configured in this slot part.
According to the present invention; With the structure of the direct-connected motor of main shaft of sewing machine in; Size in the time of not only can seeking to shorten sewing machine and install, and sneaked into motor body inside from the outside and cause motor breakage or scaling loss when motor can prevent foreign matter when sewing machine is pulled down.
Description of drawings
Fig. 1 is the front synoptic diagram that the overseam sewing machine of the motor that first execution mode of the present invention relates to has been installed.
Fig. 2 is the cross sectional elevation of the major part of expression when pulling down the motor of Fig. 1.
Fig. 3 is the cross sectional elevation of major part of the motor of presentation graphs 1.
Fig. 4 is the cross sectional elevation of the motor of second execution mode.
Fig. 5 is the cross sectional elevation of the motor of the 3rd execution mode.
Embodiment
Followingly first execution mode of the present invention is described according to Fig. 1～Fig. 3.Support 2 right flanks at sewing machine 1 are equipped with motor 8 across carriage 9.Carriage 9 usefulness screws 19 are fixed on the support 2, are provided with screw hole 9a, 9a.On support 2, be fixed with bearing 5, main shaft 4 can be supported by bearing 5 rotationally.One end of main shaft 4 is projected into the outside from support 2.A said outstanding end of main shaft 4 nested the fan 12 and the axle collar 13.Twist across packing ring 14 at the above-mentioned end of main shaft 4 and to have closed screws 15.The end butt of the circumferential edges of packing ring 14 and the axle collar 13.Through screw 15 fastening with respect to main shaft 4, by bearing 5 and the axle collar 13 with fan 12 clampings, with the left and right sides location positioning of fan 12.
In motor body 18, flatly dispose motor drive shaft 11, the axial region 11d of motor drive shaft 11 can be supported around axle by said bearing 23 rotationally.Like Fig. 1～shown in Figure 3, the end of axial region 11d is outstanding from motor body 18, is fixing belt pulley 10 at the jag of this axial region 11d with screw 7.Another distolateral (sewing machine installation side) at axial region 11d is provided with connector portions 11a.Axial region 11d and connector portions 11a are on same axle center.It is the open circles tubular of sewing machine installation side opening that connector portions 11a forms the left side, and the internal diameter of connector portions 11a is made and made the axle collar 13 intercalation almost very close to each otherly that is installed on the main shaft 4.And, be configured to connector portions 11a make it not outstanding from the sewing machine installation side opening of motor body 18.And then, can be provided with screw hole 11b with the through hole 18a concentric position of motor body 18 at connector portions 11a.Through above-mentioned formation, motor drive shaft 11 forms by the structure of bearing 23 cantilever support, with document 2 likewise, shortened motor 8 and be installed in the sewing machine width dimensions in 1 last time.On axial region 11d,, rotor 21 is rotated with motor drive shaft 11 around this fixing rotor 21 that constitutes by magnet.And, the inner face of motor body 18 and rotor 21 in opposite directions configuring fixed the stator 22 that is made up of the motor winding is arranged.
Characteristic of the present invention is in the motor structure of the sewing machine that constitutes in the above described manner, to be configured in motor body 18 inner ratio rotors 21 to the curtain-shaped cover member 26 of the opening that covers motor body 18 and more to lean on the sewing machine installation side with stator 22.Curtain-shaped cover member 26 is by forming the discoid body 26a that covers around the motor drive shaft 1, being connected with the periphery of this body 26a and from the horizontally extending installation portion 26b of this periphery be installed in strengthening part 27 formations in the interior week of installation portion 26b.Body 26a and installation portion 26b are integrally formed by rubber-like synthetic rubber etc., thereby curtain-shaped cover member 26 is fixed in motor body 18 through the inner face that is crimped on installation portion 26b motor body 18.Strengthening part 27 is the parts that are made of metal that form the L font along the body 26a of curtain-shaped cover member 26 and installation portion 26b, is used for keeping the shape of body 26a and installation portion 26b.Body 26a is as shown in Figure 2, motor drive shaft 11 sides be bent into く tee section shape midway, the front end of motor drive shaft 11 sides of body 26a contacts with the side 11cb of the slot part 11c that forms around connector portions 11a.And the front end of motor drive shaft 11 sides of this body 26a is not contacted with the bottom surface 11ca of slot part 11c.
As stated, because motor drive shaft 11 is by bearing 23 cantilever support, therefore, when the main shaft 4 of sewing machine 1 had been installed motor 8 with the same axle center of motor drive shaft 11 with staggering, eccentric rotation might take place at connector portions 11a in motor drive shaft 11.In other words; Exist connector portions 11a with respect to axial generation vertically oscillating movement maybe, still, as above-mentioned execution mode enforcement; Body 26a can not bear the load by the vibration generation of above-mentioned vertical direction from connector portions 11a, has prevented the abrasion or the breakage of curtain-shaped cover member 26.Just in case even if body 26a contacts with connector portions 11a, can be that fulcrum stretches with the dogleg section of body 26a also through body 26a, alleviate the load that the vibration because of above-mentioned connector portions 11a receives.As second execution mode; Also can that kind as shown in Figure 4; Make body 26a flex into the belt pulley side towards the front end of motor drive shaft 11 sides midway from it, make this body 26a motor drive shaft 11 sides front end with contact at the openend of connector portions 11a side 11cb around the slot part 11c that forms.In second execution mode, the front end of motor drive shaft 11 sides of this body 26a is not contacted with the bottom surface 11ca of slot part 11c.
In the motor structure of above-mentioned such sewing machine that constitutes; More lean on the sewing machine installation side through being configured in the curtain-shaped cover member 26 of the opening that covers motor body 18 motor body 18 inner ratio rotors 21 with stators 22, thereby can prevent when sneaking into motor body 18 inside to motor 8 foreign matter when sewing machine 1 is pulled down from the opening of motor body 18.Therefore, can prevent to sneak into the damaged of the inner motors 8 that caused of motor body 18 or burn because of foreign matter.
The invention is not restricted to first execution mode and second execution mode.As above-mentioned; In order to protect the durability of curtain-shaped cover member 26, preferably make it for the vibration of the vertical direction of motor drive shaft 11 bearing load not, so; Structure as shown in Figure 5, as also can to adopt the body 26a that makes curtain-shaped cover member 26 not contact with the connector portions 11a of motor drive shaft 11.The body 26a of curtain-shaped cover member 26 form from installation portion 26b vertically extend and cover motor drive shaft 11 around discoid.And the front end of motor drive shaft 11 sides of this body 26a is inserted in the slot part 11c that is provided in the 11a of wound joint portion formation with non-contacting state.By such formation, though can between curtain-shaped cover member 26 and connector portions 11a, produce the gap, the path that leads in the motor body 18 that is formed by this gap is a pahtfinder hard, and foreign matter is difficult to sneak in the motor body 18.
Description of reference numerals
1 sewing machine
2 supports
4 main shafts
The 4a contact-making surface
5 bearings
8 motors
9 carriages
11 motor drive shafts
The 11a connector portions
The 11b screw hole
The 11c slot part
The 11d axial region
13 axle collars
The 13a screw hole
14 packing rings
17 bolts
18 motor bodies
The 18a through hole
The 18c flange part
23 bearings
26 curtain-shaped cover members
The 26a body
The 26b installation portion
27 strengthening parts
Claims (3)
1. the motor structure of a sewing machine, said motor structure is provided with:
Motor body, it forms the shell and the sewing machine installation side opening of motor;
Motor drive shaft, one of which end are outstanding and one distolaterally can carry out cantilever support rotationally by the bearing that is fixed in motor body at this from motor body, form connector portions at the other end;
Rotor, it is fixed on the motor drive shaft in motor; With
Stator, itself and this rotor disposes and is fixed on the motor body inner face in opposite directions,
Said motor structure directly is connected with the main shaft of sewing machine through said connector portions, it is characterized in that:
Said motor structure is provided with curtain-shaped cover member, and said curtain-shaped cover member is configured in the sewing machine installation side from rotor and the stator in the motor, covers the said opening of motor body.
2. the motor structure of sewing machine as claimed in claim 1 is characterized in that, said curtain-shaped cover member is provided with to be fixed on the installation portion on the motor body and to be formed and covers the axial discoid body of motor.
3. the motor structure of sewing machine as claimed in claim 2; It is characterized in that; The connector portions of said motor drive shaft is configured to from the said opening of motor body outstanding, is formed with slot part in the periphery of connector portions, and the front end of the body of said curtain-shaped cover member is configured in this slot part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-223821 | 2010-10-01 | ||
| JP2010223821A JP2012075699A (en) | 2010-10-01 | 2010-10-01 | Motor structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102447337A true CN102447337A (en) | 2012-05-09 |
Family
ID=46009534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102561492A Pending CN102447337A (en) | 2010-10-01 | 2011-09-01 | Motor structure of sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2012075699A (en) |
| CN (1) | CN102447337A (en) |
| TW (1) | TW201229350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI702777B (en) * | 2018-06-15 | 2020-08-21 | 德禮實業有限公司 | Ceiling fan motor cover |
| CN112064224A (en) * | 2019-06-10 | 2020-12-11 | 深圳市积聚电子有限公司 | Sewing machine and driving device for sewing machine |
-
2010
- 2010-10-01 JP JP2010223821A patent/JP2012075699A/en active Pending
-
2011
- 2011-09-01 CN CN2011102561492A patent/CN102447337A/en active Pending
- 2011-09-30 TW TW100135473A patent/TW201229350A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI702777B (en) * | 2018-06-15 | 2020-08-21 | 德禮實業有限公司 | Ceiling fan motor cover |
| CN112064224A (en) * | 2019-06-10 | 2020-12-11 | 深圳市积聚电子有限公司 | Sewing machine and driving device for sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012075699A (en) | 2012-04-19 |
| TW201229350A (en) | 2012-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |