CN206712593U - A kind of pivot structure and motor rotor component and motor - Google Patents

Abstract

The utility model provides a kind of pivot structure and motor rotor component and motor, and wherein pivot structure includes：Rotating shaft body, the inner ring of wherein one section formation bearing of rotating shaft body, the section is inner ring section, also include the outer ring being sheathed in inner ring section, the at least two circle rolling elements between inner ring section and outer ring, and roller holder, inner ring section, outer ring, rolling element and roller holder form bearing.The pivot structure is formed in one, it can effectively reduce and eliminate in rotation process due to friction between rotating shaft and bearing be present, and gap between rotating shaft and bearing be present, easily cause the unstable of axis of rotation, consequently, it is possible to the defects of causing vibration frequency too high and damaging equipment, thus adapt to more high-revolving rotation.

Description

A kind of pivot structure and motor rotor component and motor

Technical field

It the utility model is related to technical field of motors, and in particular to a kind of pivot structure and motor rotor component and motor.

Background technology

Motor is very fast in China's speed of development, is commonly used in the equipment higher to rotating speed requirement.

The rotor assembly of motor of the prior art generally comprises the rotating shaft being rotatably provided on casing, is arranged on rotating shaft The movable vane wheel of one end and the magnet steel for being arranged on the rotating shaft other end, wherein rotating shaft pass through a pair of intervals point in rotating shaft The bearing of cloth and the bearing holder (housing, cover) being set in outside this pair of bearings are rotatably arranged on casing, and between two bearings, axle The gap portion of bearing sleeve and axle sets the spring that both ends offset with two bearings.

The motor of prior art is in high-speed rotation, due to friction between bearing and rotating shaft be present, and between rotating shaft and bearing Gap be present, easily cause the unstable of axis of rotation, consequently, it is possible to cause vibration frequency too high and damage equipment, therefore not Adapt to superfast rotation.

Utility model content

Therefore, the technical problems to be solved in the utility model is to overcome to exist between bearing of the prior art and rotating shaft and rubbed Wipe, and gap between rotating shaft and bearing be present, easily cause the unstable of axis of rotation, consequently, it is possible to causing vibration frequency mistake It is high and damage equipment, therefore the defects of do not adapt to superfast rotation, so as to provide a kind of pivot structure and rotor group Part and motor.

In order to solve the above technical problems, a kind of pivot structure of the present utility model, including rotating shaft body, it is characterised in that The inner ring of wherein one section formation bearing of rotating shaft body is stated, the section is inner ring section, in addition to is sheathed on outer in the inner ring section Circle, and at least two circle rolling elements between the inner ring section and the outer ring, and roller holder pearl, it is described interior Enclose section, outer ring, rolling element and roller holder and form bearing.

The diameter of the part at left and right sides of the inner ring section of the rotating shaft body is respectively less than the straight of the inner ring section Footpath.

The both ends end of the bearing is additionally provided with the dust cap in gap between the embedded outer ring and the inner ring.

Also include two dust rings for being close to the setting of bearing both ends end face respectively.

The rolling element is ball.

The ball is provided with two circles.

A kind of motor rotor component, including magnet steel, movable vane wheel, there is above-mentioned pivot structure, the magnet steel, the movable vane Wheel is arranged on the rotating shaft body, and is respectively at the both sides of the inner ring section.

The magnet steel and the rotating shaft body circumferentially gluing connection.

It is interference fit connection between the movable vane wheel and the rotating shaft body.

A kind of motor, there is above-mentioned motor rotor component.

Technical solutions of the utility model, have the following advantages that：

1. pivot structure provided by the utility model, including rotating shaft body, wherein one section formation axle of the rotating shaft body The inner ring held, the section are inner ring section, in addition to the outer ring that is sheathed in the inner ring section and positioned at the inner ring section and described At least two circle rolling elements between outer ring, roller holder, inner ring section, outer ring and the ball, roller holder shape Into bearing, the pivot structure is formed in one, and can effectively reduce and eliminate in rotation process and be rubbed due to existing between rotating shaft and bearing Wipe, and gap between rotating shaft and bearing be present, easily cause the unstable of axis of rotation, consequently, it is possible to causing vibration frequency mistake It is high and the defects of damage equipment, thus adapt to more high-revolving rotation.

2. pivot structure provided by the utility model, the part at left and right sides of the inner ring section of the rotating shaft body Diameter be respectively less than the diameter of the inner ring section, can be easy to rotating shaft being installed in casing, and can limit other in rotating shaft The axial movement of part, make rotation more stable.

3. pivot structure provided by the utility model, in addition to it is close to the two dust-proof of bearing both ends end face setting respectively Circle, two dust rings and the dust cap, outer ring, inner ring section form sealing structure, can prevent dust enter the outer ring with In the space that the inner ring section is formed, so as to ensure the normal work of ball.

4. pivot structure provided by the utility model, the ball is provided with two circles, can limit the radial direction of rotating shaft with axially altering It is dynamic, rotational resistance is reduced, rotation process can be made more stable.

5. a kind of motor rotor component provided by the utility model, including magnet steel, movable vane wheel, there is described rotating shaft knot Structure, the magnet steel, the movable vane wheel are arranged on the rotating shaft body, and are respectively at the both sides of the inner ring section, the motor Rotor assembly overall structure is simple and reliable, is easy to assembly, and the rotating speed that can reach is high.

6. a kind of motor rotor component provided by the utility model, the magnet steel and the rotating shaft body circumferentially gluing company Connect, rational air gap flux density can be formed between the magnet steel and the rotating shaft body, ensure that rotating shaft normally rotates.

7. a kind of motor rotor component provided by the utility model, it is interference between the movable vane wheel and the rotating shaft body It is connected, the interference fit connection between the movable vane wheel and the rotating shaft body can prevent movable vane wheel from being led when high speed rotates The centrifugal force of cause from rotating shaft so as to come off so as to cause danger.

8. a kind of motor provided by the utility model, has described motor rotor component, the motor can rotate at a high speed.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the front view of the motor rotor component provided in the first embodiment of the present utility model；

Description of reference numerals：

1- rotating shafts；2- dust rings；3- magnet steel；4- movable vane wheels；

11- inner ring sections；12- balls；13- outer rings；14- dust caps；

41- holes

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Conflict can is not formed to be combined with each other.

Embodiment 1 (embodiment of part)

A kind of embodiment of pivot structure as shown in Figure 1, including rotating shaft body 1, the rotating shaft body 1 its In one section of formation bearing inner ring, the section is inner ring section 11, in addition to the outer ring 13 and position being sheathed in the inner ring section 11 At least two circle rolling elements between the inner ring section 11 and the outer ring 13, and roller holder, the inner ring section 11, Outer ring 13, rolling element, and roller holder 12 form bearing.It is preferred that the rolling element is ball 12.

Above-mentioned pivot structure is formed in one, and effectively can be reduced and eliminate in rotation process in rotating shaft compared to bearing holder (housing, cover) Due to friction between rotating shaft and bearing be present, and gap between rotating shaft and bearing be present, easily cause the unstable of axis of rotation, from And may result in vibration frequency it is too high and the defects of damage equipment, thus adapt to more high-revolving rotation.

Specifically, the diameter positioned at the part of the left and right sides of inner ring section 11 of the rotating shaft body 1 is respectively less than described It the diameter of inner ring section 11, can be easy to rotating shaft being installed in casing, and the axial movement of other parts in rotating shaft can be limited, So that rotate more stable.

The both ends end of the bearing is additionally provided with the dust cap in gap between the embedded outer ring and the inner ring.

Specifically, the pivot structure also includes also including the dust ring 2 for being close to the setting of bearing both ends end face respectively. Two dust rings form sealing structure with the dust cap 14, outer ring 13, inner ring section 11, ball 12, can prevent dust from entering In the space that the outer ring 13 is formed with the inner ring section 11, so as to ensure the normal work of ball 12.

Specifically, two dust rings are elastic component, and tight set is located on the rotating shaft body and only leans against the inner ring section The position at both ends.

Specifically, when being commonly designed, preferably described ball 12 is provided with two circles, such setting can limit the radial direction of rotating shaft with Axial float, rotational resistance is reduced, rotation process can be made more stable.

Further, the ball 12 is limited in the sky that the inner ring section 11 and the outer ring section 13 formed by ball rack Between in.

Embodiment 2

A kind of motor rotor component as shown in Figure 1, including the pivot structure described in embodiment 1, in addition to it is magnet steel 3, dynamic Impeller 4, the magnet steel 3, movable vane wheel 4 are arranged on the rotating shaft body, and are respectively at the both sides of the inner ring section 11.

Specifically, the magnet steel 3 and the gluing connection of rotating shaft body, the magnet steel 3 is permanent magnet, can be formed rational Air gap flux density, ensure the normal operation of rotating shaft.

Specifically, the movable vane wheel 4 connects with rotating shaft body interference fit, and the movable vane wheel 4 includes hole 41, the rotating shaft At least a portion length of body is deep into the hole 41, can make the movable vane wheel 4 and the compact connection of rotating shaft body, Ensure to be unlikely to cause the movable vane wheel 4 to depart from the rotating shaft body by centrifugal force is excessive during axis of rotation, prevent from sending out It is raw dangerous.

Embodiment 3

A kind of motor, there is the motor rotor component described in embodiment 2, the motor, which can be realized, to be rotated at a high speed, is reached as high as 200000 rpms.

Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among the protection domain that variation is created still in the utility model.

Claims (10)

1. a kind of pivot structure, including rotating shaft body, it is characterised in that wherein one section of formation bearing of the rotating shaft body it is interior Circle, the section are inner ring section, in addition to the outer ring being sheathed in the inner ring section, between the inner ring section and the outer ring At least two circle rolling elements, and roller holder, the inner ring section, outer ring, rolling element and roller holder form axle Hold.

2. pivot structure according to claim 1, it is characterised in that the rotating shaft body is located at described inner ring section or so The diameter of the part of both sides is respectively less than the diameter of the inner ring section.

3. pivot structure according to claim 1, it is characterised in that the both ends end of the bearing is additionally provided with described in insertion Dust cap between outer ring and the inner ring in gap.

4. pivot structure according to claim 3, it is characterised in that also set including being close to bearing both ends end face respectively Two dust rings put.

5. pivot structure according to claim 1, it is characterised in that the rolling element is ball.

6. pivot structure according to claim 5, it is characterised in that the ball is provided with two circles.

7. a kind of motor rotor component, including magnet steel, movable vane wheel, it is characterised in that have any one of claim 1-6 Pivot structure, the magnet steel, the movable vane wheel be arranged on the rotating shaft body, and is respectively at the two of the inner ring section Side.

A kind of 8. motor rotor component according to claim 7, it is characterised in that：The magnet steel and the rotating shaft body edge Circumferential gluing connection.

A kind of 9. motor rotor component according to claim 7 or 8, it is characterised in that：The movable vane wheel and the rotating shaft It is interference fit connection between body.

10. a kind of motor, it is characterised in that there is the motor rotor component described in claim any one of 7-9.