CN215120419U - Axial series motion limiting structure of miniature brushless motor - Google Patents

Abstract

The utility model discloses a microminiature brushless motor's axial cluster moves limit structure, including the casing, its characterized in that: the inside of casing is provided with the stator, be provided with damping spring between stator and the casing, damping spring's inboard is provided with the telescopic link, the top fixed mounting of telescopic link has the shock attenuation board, the below both sides of shock attenuation board all are provided with the card, the inside of casing is provided with the rectangular channel, the middle part of casing is provided with the transmission shaft, the equal fixed mounting in the left and right sides of transmission shaft has the slip chamber, equal sliding connection has the buffer board in the slip chamber, be provided with the pipeline between the slip chamber at transmission shaft both ends, the equal fixed mounting in transmission shaft both ends has the primary shaft, the centre fixed mounting of transmission shaft has the rotor, one side fixed mounting of primary shaft has the end cover, the utility model discloses, have the practicality strong and realize the absorbing characteristics to the motor.

Description

Axial series motion limiting structure of miniature brushless motor

Technical Field

The utility model relates to a brushless motor technical field specifically is microminiature brushless motor's axial cluster moves limit structure.

Background

The motor is generally composed of a shell, an end cover, a stator and a rotor main part, wherein two ends of the rotor are supported by bearings, the bearings are arranged in holes in the end cover, and the bearings need to be prestressed to ensure that the bearings run stably.

Usually, a spring is added between a bearing and the bottom of an end cover hole and props against an outer ring of the bearing, but the length of the spring changes along with the stress, when the spring is impacted or vibrated, the shaft moves, generally called axial movement, which affects the control precision of the motor, particularly a precise miniature motor.

Therefore, it is necessary to design an axial play restriction structure of a micro brushless motor which is highly practical and realizes shock absorption of the motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a microminiature brushless motor's axial cluster moves limit structure to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: axial string of microminiature brushless motor moves limit structure, including the casing, its characterized in that: the damping structure comprises a casing, a stator, a damping spring, a telescopic rod, a damping plate, four groups of damping structures, a spring, a rectangular groove, a telescopic rod, a damping structure and a damping structure, wherein the stator is arranged in the casing, the damping spring is arranged between the stator and the casing, the telescopic rod is arranged on the inner side of the damping spring, the damping plate is fixedly arranged above the telescopic rod, the clamping pieces are arranged on both sides below the damping plate, the rectangular groove is arranged in the casing, after the micro brushless motor is started, when the power is too high, the whole motor can generate vibration, the four groups of damping structures arranged in the motor casing can play a role, the spring above the stator plays a damping effect, the telescopic rod in the spring drives the upper damping plate to slide up and down in the rectangular groove to transfer the vibration to the casing, so as to realize the damping effect, the clamping pieces on both sides of the telescopic rod limit the upper half part of the damping structure in the rectangular groove, and realize the damping effect on the micro brushless motor through the damping structure, the damping plate distributes a part of the vibration received by the spring to the shell;

according to the technical scheme, the transmission shaft is arranged in the middle of the casing, sliding cavities are fixedly arranged on the left side and the right side of the transmission shaft, buffer plates are connected in the sliding cavities in a sliding mode, pipelines are arranged between the sliding cavities at the two ends of the transmission shaft, if the transmission shaft is in series motion, the buffer plates on the two sides of the transmission shaft can buffer the transmission shaft, the transmission shaft is prevented from being in series motion in a large range, an end cover or the casing is collided, the service life of the shaft is shortened, if the transmission shaft is in series motion, sponge blocks on the buffer plates can also have a noise reduction effect, after the buffer plates on one side are subjected to thrust, the buffer plates connected with the pipelines on the other side can be pushed, the other end of the shaft is limited, the shaft is prevented from being in series motion, the buffer plates can have a limiting effect on the series motion of the transmission shaft, and the sponge blocks on the buffer plates have a noise reduction effect;

according to the technical scheme, the two ends of the transmission shaft are fixedly provided with first bearings, the middle of the transmission shaft is fixedly provided with a rotor, one side of each first bearing is fixedly provided with an end cover, and the rotor rotates along with the transmission shaft;

according to the technical scheme, a bearing baffle is arranged at one end with a larger diameter between the transmission shaft and the end cover, a second bearing is fixedly arranged at the left side of the bearing baffle, a rigid gasket is fixedly arranged at the left side of the second bearing, an extrusion spring is fixedly arranged at the right side of the rigid gasket, a locking screw is fixedly arranged at the right end of the bearing baffle, a spring is arranged at the outer side of the locking screw and props against the rigid gasket, and the rigid gasket props against the outer ring of the bearing, so that the pre-pressure of the spring is applied to the bearing, a spring is applied to a screw rod, the spring is solidified by fixing glue or epoxy resin after being locked to a certain force, the length of the spring cannot be changed any more, and the bearing is more effectively fixed by the steps to prevent the transmission shaft from moving;

according to the technical scheme, the hole in the end cover is divided into two sections with different diameters, and the two sections with different diameters are respectively provided with different fixing parts for fixing the bearing;

according to the technical scheme, the sponge block is fixedly arranged on one side of the buffer plate, and when collision occurs, the sponge block on the buffer plate can play a role in noise reduction.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the utility model is characterized in that the utility model,

(1) through the arrangement of the damping structure, after the micro brushless motor is started, when the power is too high, the whole motor can generate vibration, four groups of damping structures arranged in the motor shell can play a role, the spring above the stator plays a damping effect, the telescopic rod in the spring drives the upper damping plate to slide up and down in the rectangular groove to transfer the vibration to the shell, the damping effect is realized, the upper half part of the damping structure is limited in the rectangular groove by the clamping pieces on two sides of the telescopic rod, through the steps, the damping effect on the micro brushless motor is realized through the damping structure, and the damping plate distributes part of the vibration received by the spring to the shell;

(2) the locking screw, the spring and the bearing baffle are arranged, the spring is additionally arranged on a screw rod of the locking screw, after the locking screw is locked to a certain force, the spring is solidified by fixing glue or epoxy resin, the length of the spring cannot be changed any more, the locking screw fixes the bearing baffle, the bearing baffle fixes the bearing, and through the steps, the bearing is more effectively fixed through the locking screw and the bearing baffle, so that the transmission shaft is prevented from moving;

(3) through being provided with the buffer board, if the transmission shaft takes place to move in a string way, the buffer board of transmission shaft both sides can play the effect of buffering to the transmission shaft, the range that prevents the transmission shaft and move in a string way is great, produce the collision to end cover or casing, reduce the life of axle, if the collision takes place, sponge piece on the buffer board also can play the effect of making an uproar, the buffer board when one side receives the thrust back, opposite side pipe connection's buffer board will be promoted, it is spacing to the other end of counter shaft, prevent the axle and move in a string way, can play the spacing effect of making an uproar to the transmission shaft through the buffer board, sponge piece on the buffer board plays the effect of making an uproar.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall front structure of the present invention;

fig. 2 is a partially enlarged schematic view of the shock-absorbing structure of the present invention;

in the figure: 1. a housing; 2. a sliding cavity; 3. a pipeline; 4. a buffer plate; 5. a drive shaft; 6. an end cap; 7. a damper plate; 8. a telescopic rod; 9. a card; 10. a rectangular groove; 11. a damping spring; 12. a stator; 13. a rotor; 14. a first bearing; 15. a bearing baffle; 16. a second bearing; 17. a locking screw; 18. a spring; 19. a rigid gasket; 20. compressing the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: axial string of microminiature brushless motor moves limit structure, including casing 1, its characterized in that: the miniature brushless motor is characterized in that a stator 12 is arranged inside the housing 1, a damping spring 11 is arranged between the stator 12 and the housing 1, an expansion link 8 is arranged on the inner side of the damping spring 11, a damping plate 7 is fixedly mounted above the expansion link 8, clamping pieces 9 are arranged on two sides below the damping plate 7, a rectangular groove 10 is arranged inside the housing 1, when the miniature brushless motor is started and has overlarge power, the motor can generate vibration as a whole, four groups of damping structures arranged inside the motor housing can play a role, the damping spring 11 above the stator 12 plays a damping effect, the expansion link 8 inside the damping spring 11 drives the upper damping plate 7 to slide up and down inside the rectangular groove 10 to transfer the vibration to the housing 1, so that the damping effect is realized, the clamping pieces 9 on two sides of the expansion link 8 limit the upper half part of the damping structure inside the rectangular groove 10, and the steps are completed; the damping effect on the miniature brushless motor is realized through a damping structure, and the damping plate 7 distributes part of the vibration received by the damping spring 11 to the machine shell 1;

the middle part of the machine shell 1 is provided with a transmission shaft 5, the left side and the right side of the transmission shaft 5 are both fixedly provided with a sliding cavity 2, the sliding cavities 2 are both connected with a buffer plate 4 in a sliding way, a pipeline 3 is arranged between the sliding cavities 2 at the two ends of the transmission shaft 5, if the transmission shaft 5 is in series motion, the buffer plates 4 at the two sides of the transmission shaft 5 can play a role of buffering the transmission shaft 5, the series motion amplitude of the transmission shaft 5 is prevented from being larger, the collision is generated on the end cover 6 or the machine shell 1, the service life of the shaft is reduced, if the collision is generated, the sponge block on the buffer plate 4 can also play a role of noise reduction, when the buffer plate 4 on one side is pushed, the buffer plate 4 connected with the pipeline 3 on the other side is pushed, the other end of the shaft is limited to prevent the shaft from moving in a string manner, the buffer plate 4 can limit the moving of the transmission shaft 5, and the sponge block on the buffer plate 4 can reduce noise;

the two ends of the transmission shaft 5 are fixedly provided with first bearings 14, the middle of the transmission shaft 5 is fixedly provided with a rotor 13, one side of each first bearing 14 is fixedly provided with an end cover 6, and the rotor 13 rotates along with the transmission shaft 5;

a bearing baffle plate 15 is arranged at one end with a larger diameter between the transmission shaft 5 and the end cover 6, a second bearing 16 is fixedly arranged at the left side of the bearing baffle plate 15, a rigid gasket 19 is fixedly arranged at the left side of the second bearing 16, an extrusion spring 20 is fixedly arranged at the right side of the rigid gasket 19, a locking screw 17 is fixedly arranged at the right end of the bearing baffle plate 15, a spring 18 is arranged at the outer side of the locking screw 17, a spring 18 is added on a screw rod of the locking screw 17, after the locking screw is locked to a certain force, the spring 18 is solidified by fixing glue or epoxy resin, the length of the spring 18 can not be changed, the bearing baffle plate 15 is fixed by the locking screw 17, the bearing is fixed by the bearing baffle plate 15, the extrusion spring 20 is propped against the rigid gasket 19, the rigid gasket 19 is propped against the outer ring of the bearing, so that the pre-pressure of the spring is added on the bearing, and through the matching of the locking screw 17 with the bearing baffle plate 15, the extrusion spring 20 and the rigid gasket 19 are matched to more effectively fix the bearing, so that the transmission shaft 5 is prevented from moving;

the hole on the end cover 6 is divided into two sections with different diameters, and the two sections with different diameters are respectively provided with different fixing parts for fixing the bearing;

one side fixed mounting of buffer board 4 has the sponge piece, and when bumping into, the sponge piece on the buffer board 4 can play the effect of making an uproar of falling.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. Microminiature brushless motor's axial cluster moves limit structure, including casing (1), its characterized in that: the inside of casing (1) is provided with stator (12), be provided with damping spring (11) between stator (12) and casing (1), the inboard of damping spring (11) is provided with telescopic link (8), the top fixed mounting of telescopic link (8) has shock attenuation board (7), the below both sides of shock attenuation board (7) all are provided with card (9), the inside of casing (1) is provided with rectangular channel (10).

2. The axial play restriction structure of a micro brushless motor according to claim 1, wherein: the middle part of casing (1) is provided with transmission shaft (5), the equal fixed mounting in the left and right sides of transmission shaft (5) has slip chamber (2), equal sliding connection has buffer board (4) in slip chamber (2), be provided with pipeline (3) between the slip chamber (2) at transmission shaft (5) both ends.

3. The axial play restriction structure of a micro brushless motor according to claim 2, wherein: the transmission shaft (5) is characterized in that first bearings (14) are fixedly mounted at two ends of the transmission shaft (5), a rotor (13) is fixedly mounted in the middle of the transmission shaft (5), and an end cover (6) is fixedly mounted on one side of each first bearing (14).

4. The axial play restriction structure of a micro brushless motor according to claim 3, wherein: the great one end of diameter is provided with bearing baffle (15) between transmission shaft (5) and end cover (6), the left side fixed mounting of bearing baffle (15) has second bearing (16), the left side fixed mounting of second bearing (16) has rigidity gasket (19), the right side fixed mounting of rigidity gasket (19) has extrusion spring (20), the right-hand member fixed mounting of bearing baffle (15) has locking screw (17), the outside of locking screw (17) is provided with spring (18).

5. The axial play restriction structure of a micro brushless motor according to claim 4, wherein: the hole on the end cover (6) is divided into two sections with different diameters.

6. The axial play restriction structure of a micro brushless motor according to claim 5, wherein: and a sponge block is fixedly arranged on one side of the buffer plate (4).

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