CN202737658U - Low-noise permanent-magnetic direct-current gear motor - Google Patents
Low-noise permanent-magnetic direct-current gear motor Download PDFInfo
- Publication number
- CN202737658U CN202737658U CN2012203711196U CN201220371119U CN202737658U CN 202737658 U CN202737658 U CN 202737658U CN 2012203711196 U CN2012203711196 U CN 2012203711196U CN 201220371119 U CN201220371119 U CN 201220371119U CN 202737658 U CN202737658 U CN 202737658U
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- motor
- gear motor
- gear
- low noise
- noise
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Abstract
A low-noise permanent-magnetic direct-current gear motor belongs to the technical field of motors. The low-noise permanent-magnetic direct-current gear motor comprises a motor, and is characterized in that the output shaft of the motor is a worm shaft, and the worm shaft is in engaged transmission with a bevel wheel. According to the low-noise permanent-magnetic direct-current gear motor, the engaged transmission of the worm shaft and the bevel wheel is adopted, the one-stage deceleration of the transmission of a worm pair can meet a transmission ratio of forty times, and thus noises generated by that a gear pair needs multi-stage deceleration for increasing transmission are prevented, so that a main noise source in a driving system is effectively improved, and the quality of products is guaranteed; a shock-absorbing pad is disposed on a carbon brush holder of the motor, the motor shock is enabled to be attenuated and disappear when the motor shock is transmitted to the carbon brush holder, and thus sound contact of the carbon brush and a commutator is realized, and electromagnetic noises of the motor is effectively reduced; a motor support and a motor housing are connected through a short screw and an L-shaped pulling plate, and the contact surface is in enclosed cooperation, and thus the gear motor is convenient for dismounting and the decibel value of the whole motor is reduced.
Description
Technical field
The utility model belongs to technical field of motors, is specially a kind of low noise DC gear motor for medical treatment, health care facility and furniture office equipment.
Background technology
Along with the development of science and technology and the raising of living standards of the people, the furniture office equipment of health care and equipment trends towards adopting electronic automatic regulation function, and because these equipment Special use occasions, its electronic drive system is had higher low noise requirement, and traditional motor and drive system are difficult to reach this demand.The transmission mechanism of driving motor adopts metal worm screw, worm gear engaged transmission, and mechanicalness noise is large; The vibrations of conventional motors structure objective reality when motor rotation easily are delivered to carbon brush holder, and then cause beating of carbon brush, then increase the probability of carbon brush and commutator loose contact, produce or the increase electric spark, thus the electromagnetic noise of increase motor.The following dual mode of fastening basic employing of conventional motors support and housing: the one, support and housing riveted joint, this kind connecting mode needs the fragile parts of repair demolition and is difficult to restore at motor; The 2nd, adopt long bolt to be fastenedly connected from the screw that the housing afterbody passes housing and support, although this kind connecting mode has solved the convenience that needs repair demolition at motor, but elongate threaded screw is subjected to the impact of magnetic force and vibrations to produce resonance in housing, and then produces mechanicalness noise.The contact-making surface of conventional motors support and housing does not seal, and electromagnetic noise is large.
The utility model content
For the above-mentioned problems in the prior art, the purpose of this utility model is to design the technical scheme that a kind of low noise DC gear motor is provided, and the main noise source in the drive system is improved, and it is required to satisfy equipment.
Described a kind of low noise DC gear motor comprises motor, and the output shaft that it is characterized in that motor is worm shaft, worm shaft and helical gear engaged transmission.
Described a kind of low noise DC gear motor is characterized in that being equipped with Shock absorbing cushion on the carbon brush holder of motor.
Described a kind of low noise DC gear motor is characterized in that the electric machine support of motor, electric machine casing are connected by short screw, L shaped arm-tie.
Described a kind of low noise DC gear motor is characterized in that the electric machine support of motor, the sealing of electric machine casing contact-making surface cooperate.
Described a kind of low noise DC gear motor is characterized in that described helical gear is made of plastics.
Described a kind of low noise DC gear motor is characterized in that described Shock absorbing cushion made by rubber.
Described a kind of low noise DC gear motor is characterized in that on the L shaped arm-tie screw being set short screw and screw threaded.
Above-mentioned a kind of low noise DC gear motor, adopt worm shaft and helical gear engaged transmission, Worm screw and worm-gear drive transmission primary speed-down just reaches fortyfold gearratio, avoided gear pair to need multi-stage speed-reducing to increase the noise that transmission causes, main noise source in the drive system is improved, has ensured the quality of product; Shock absorbing cushion is set on the carbon brush frame for motor, obtains decay and disappearance when making the motor vibrations be transmitted to carbon brush holder, thereby realize the good contact of carbon brush and commutator, effectively reduce the electromagnetic noise of motor; Electric machine support is connected short screw, L shaped arm-tie and connects with electric machine casing, and the contact-making surface sealing cooperates, and its easy accessibility has reduced again the decibel value of complete machine.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Among the figure: 1-carbon brush holder, 2-Shock absorbing cushion, 3-worm shaft, 4-helical gear, 5-electric machine support, 6-short screw, 7-L shape arm-tie, 7a-screw, 8-electric machine casing, 9-motor.
Embodiment
The utility model is described in further detail below in conjunction with Figure of description.
As shown in the figure, this low noise DC gear motor comprises motor 9, and the output shaft of motor 9 is made worm shaft 3, and worm shaft 3 and helical gear 4 engaged transmission increase the transmission mechanism that moment of torsion comes driving arrangement by helical gear 4 outputs after vast scale slows down.Because Worm screw and worm-gear drive transmission primary speed-down just reaches fortyfold gearratio, avoided gear pair to need multi-stage speed-reducing to increase the noise that transmission causes; The main helical gear 4 that is has adopted the engineering plastics making, and clashing into the rigid collision that is compared to metal gear with the transmission of worm shaft 3 under the prerequisite that ensures sufficient mechanical strength is a kind of flexible contact, greatly reduces mechanicalness noise; And worm shaft 3 is that a kind of point contacts with helical gear 4 engaged transmission, has improved the transmission requirement, and the main noise source in the drive system is improved, and has ensured the quality of product.
Be equipped with Shock absorbing cushion 2 on the carbon brush holder 1 of motor 9, described Shock absorbing cushion 2 is made by rubber, obtains decay when making motor 9 vibrations be transmitted to carbon brush holder 1 and disappears, thereby realize the good contact of carbon brush and commutator, effectively reduces the electromagnetic noise of motor 9.The electric machine support 5 of motor 9, electric machine casing 8 are connected by short screw 6, L shaped arm-tie 7, on the L shaped arm-tie 7 screw 7a is set, short screw 6 and screw 7a threaded, only in an end perforate of electric machine casing 8, short screw 6, L shaped arm-tie 7 are fastening with electric machine support 5, electric machine casing 8, its easy accessibility has reduced again the decibel value of complete machine.And the electric machine support 5 of motor 9, the sealing of electric machine casing 8 contact-making surfaces cooperate, and the contact-making surface sealing cooperates the electromagnetic noise in the maskable part electric machine casing 8, have further reduced the decibel value of complete machine.
Claims (7)
1. a low noise DC gear motor comprises motor (9), and the output shaft that it is characterized in that motor (9) is worm shaft (3), worm shaft (3) and helical gear (4) engaged transmission.
2. a kind of low noise DC gear motor as claimed in claim 1 is characterized in that being equipped with Shock absorbing cushion (2) on the carbon brush holder (1) of motor (9).
3. a kind of low noise DC gear motor as claimed in claim 1 is characterized in that the electric machine support (5) of motor (9), electric machine casing (8) are connected by short screw (6), L shaped arm-tie (7).
4. a kind of low noise DC gear motor as claimed in claim 1 is characterized in that the electric machine support (5) of motor (9), the sealing of electric machine casing (8) contact-making surface cooperate.
5. a kind of low noise DC gear motor as claimed in claim 1 is characterized in that described helical gear (4) is made of plastics.
6. a kind of low noise DC gear motor as claimed in claim 2 is characterized in that described Shock absorbing cushion (2) made by rubber.
7. a kind of low noise DC gear motor as claimed in claim 3 is characterized in that arranging on the L shaped arm-tie (7) screw (7a), short screw (6) and screw (7a) threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203711196U CN202737658U (en) | 2012-07-30 | 2012-07-30 | Low-noise permanent-magnetic direct-current gear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203711196U CN202737658U (en) | 2012-07-30 | 2012-07-30 | Low-noise permanent-magnetic direct-current gear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737658U true CN202737658U (en) | 2013-02-13 |
Family
ID=47663317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203711196U Expired - Lifetime CN202737658U (en) | 2012-07-30 | 2012-07-30 | Low-noise permanent-magnetic direct-current gear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228390A (en) * | 2014-09-05 | 2014-12-24 | 东莞市票友机电科技有限公司 | Speed reducing motor for ticket binding machine |
-
2012
- 2012-07-30 CN CN2012203711196U patent/CN202737658U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228390A (en) * | 2014-09-05 | 2014-12-24 | 东莞市票友机电科技有限公司 | Speed reducing motor for ticket binding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |