CN201845636U - Electromagnet transmission device - Google Patents
Electromagnet transmission device Download PDFInfo
- Publication number
- CN201845636U CN201845636U CN201020596794XU CN201020596794U CN201845636U CN 201845636 U CN201845636 U CN 201845636U CN 201020596794X U CN201020596794X U CN 201020596794XU CN 201020596794 U CN201020596794 U CN 201020596794U CN 201845636 U CN201845636 U CN 201845636U
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- CN
- China
- Prior art keywords
- electromagnet
- shell
- driving shaft
- iron core
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model discloses an electromagnet transmission device, which comprises a cylindrical shell. The shell comprises a mounting end and a driving end. The mounting end is provided with a stop iron for sealing the shell, and a mounting bracket is also arranged at the mounting end of the shell. An electromagnet is arranged in the shell. A moving iron core capable of axially moving relatively to the shell is arranged in the center of the electromagnet. The moving iron core is provided with a driving shaft in the axial direction in a penetrating way. One end of the driving shaft stretches out of the driving end of the shell, and the other end of the driving shaft passes through the stop iron and is connected with one end of a spring. The other end of the spring is connected with the mounting bracket. The stop iron comprises a cone part and a disc part. The cone part and the disc part are of an integral structure. In the electromagnet transmission device, the stop iron is of the integral structure, so in the transmission process of the driving shaft, after the magnetic circuit of the electromagnet is closed, the magnetic leak is greatly reduced, the current of an electromagnetic coil is steadier, the noise is lower, and the service life of the device is greatly prolonged.
Description
(1) technical field
The utility model relates to a kind of electromagnet apparatus, particularly is applied to the needle-thread tensioning control device on the sewing machine.
(2) background technology
Electromagnetic gear is by electromagnet electromagnetic energy to be transformed into the device that mechanical energy drives the electrical equipment action, be widely used in every field, such as the needle-thread tensioning control device on the sewing machine, being about to suture clamps or the device that unclamps with tension disk, electromagnet mainly is made up of coil and magnetic conductor, magnetic conductor generally comprises moving iron core and static iron core, after the solenoid energising, the attraction of the electromagnet that moving iron core is fixed, constitute closed magnetic circuit with electromagnet,, will cause solenoid current excessive if closed bad, time is sent noise in short-term, and overlong time will be burnt coil.In the prior art, reveal in order to prevent magnetic field, be provided with buting iron in the electromagnet end, but buting iron all is made up of two parts, still there is the part leakage in so unavoidable generation slit, magnetic field.
(3) summary of the invention
In order to overcome deficiency of the prior art, the utility model provides a kind of the buting iron structure is improved, and significantly reduces the electromagnet transmission device that reveal in magnetic field.
The technical scheme in the invention for solving the technical problem is:
A kind of electromagnet transmission device, comprise a cylindrical case, described shell includes installation end and drive end, described installation end is provided with the buting iron of closure, and also be provided with an installing rack at this end of shell, be provided with electromagnet in the shell, described electromagnet center is the moving iron core of energy opposite shell axial motion, described moving iron core is equipped with a driving shaft in the axial direction, described driving shaft one end stretches out the shell drive end, and the other end passes described buting iron and connects an end of a spring, the other end connection frame of described spring, described buting iron includes conical section and disk body part, and described conical section and disk body section are divided into integral structure.
As preferably, move the closed-loop that iron core is provided with energy closure drive end.
Under initial condition, because the effect of spring, moving iron core is not closed with electromagnet, and after the electromagnet energising, the attraction of the electromagnet that moving iron core is fixed overcomes after the effect axial motion of spring and electromagnet formation closed magnetic circuit, simultaneously with length of spring compressed.Buting iron and closed-loop make the magnetic circuit closure, because buting iron is the integral type setting, magnetic is revealed and significantly reduced, and solenoid current is more stable, and noise is less.After removing electric current, magnetic field disappears, because the return action of spring, moving iron mandrel is returned to original position to outside motion.Because driving shaft is arranged on the moving iron core, has so just realized the transmission of driving shaft, driving shaft can drive the structure motion that connects itself.
The beneficial effects of the utility model are: the utility model is arranged to integral structure with buting iron, then in the driving shaft transmission process, after the magnetic circuit closure of electromagnet, magnetic is revealed and is significantly reduced, solenoid current is more stable, and noise is less, greatly the useful life of extension fixture.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a blast structural representation of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, 2, a kind of electromagnet transmission device comprises a cylindrical case 1, and shell 1 includes installation end and drive end, and the installation end of shell is closed with buting iron 8, is fixed with an installing rack 4 on the buting iron 8, is connected with a spring 5 on the installing rack 4.Be provided with electromagnet 9 in the shell, electromagnet 9 has the cable 6 of outwards drawing, and the electromagnet center is the moving iron core of energy opposite shell axial motion, and a driving shaft 3 axially passes moving iron core 7, and driving shaft 3 one ends stretch out the shell drive end, and the other end passes buting iron and connects an end of spring 5.Buting iron includes conical section and disk body part, and conical section and disk body section are divided into integral structure, the installation end of buting iron closure.Moving iron core is provided with closed-loop 2, the drive end of closed-loop energy closure after moving iron core is by adhesive.
Under initial condition, because the effect of spring, moving iron core is not closed with electromagnet, and after the electromagnet energising, the electromagnet that moving iron core is fixed attracts, and overcomes after the effect axial motion of spring and electromagnet formation closed magnetic circuit, simultaneously with length of spring compressed.Buting iron and closed-loop make the magnetic circuit closure, because buting iron is the integral type setting, magnetic is revealed and significantly reduced, and solenoid current is more stable, and noise is less.After removing electric current, magnetic field disappears, because the return action of spring, moving iron mandrel is returned to original position to outside motion.Because driving shaft is arranged on the moving iron core, has so just realized the transmission of driving shaft, driving shaft can drive the structure motion that connects itself.
Claims (2)
1. electromagnet transmission device, comprise a cylindrical case, described shell includes installation end and drive end, described installation end is provided with the buting iron of closure, and also be provided with an installing rack at this end of shell, be provided with electromagnet in the shell, described electromagnet center is the moving iron core of energy opposite shell axial motion, described moving iron core is equipped with a driving shaft in the axial direction, described driving shaft one end stretches out the shell drive end, the other end passes described buting iron and connects an end of a spring, the other end connection frame of described spring, it is characterized in that: described buting iron includes conical section and disk body part, and described conical section and disk body section are divided into integral structure.
2. electromagnet transmission device according to claim 1 is characterized in that: described moving iron core is provided with the closed-loop of energy closure drive end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020596794XU CN201845636U (en) | 2010-11-01 | 2010-11-01 | Electromagnet transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020596794XU CN201845636U (en) | 2010-11-01 | 2010-11-01 | Electromagnet transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845636U true CN201845636U (en) | 2011-05-25 |
Family
ID=44040521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020596794XU Expired - Fee Related CN201845636U (en) | 2010-11-01 | 2010-11-01 | Electromagnet transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201845636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809764A (en) * | 2012-11-07 | 2014-05-21 | 索尼公司 | Magnetic circuit and key input device |
-
2010
- 2010-11-01 CN CN201020596794XU patent/CN201845636U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809764A (en) * | 2012-11-07 | 2014-05-21 | 索尼公司 | Magnetic circuit and key input device |
| CN103809764B (en) * | 2012-11-07 | 2018-07-20 | 索尼公司 | Magnetism circuit and key input apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20131101 |