CN208754122U - Motor - Google Patents

Abstract

The utility model provides a kind of motor, including procapsid, the stator punching being fixed on inside procapsid, rotor assembly and the back casing connecting with procapsid, noise elimination cavity is equipped with inside procapsid, is equipped with acoustic damping materials in noise elimination cavity；The seam allowance face that procapsid has inner cylinder portion and is formed on the inside of inner cylinder portion, stator punching are pressed into inner cylinder portion by interference fit type and stop at only aperture position.Motor provided by the utility model, stator punching are pressed into procapsid by interference fit type and stop at the only aperture position of procapsid, play the role of improving stator punching rigidity, also helping reduces stator radiated noise；Noise elimination cavity is set inside procapsid, and fills or be laid with acoustic damping materials in noise elimination cavity, plays the role of eliminating the noise to noise of motor, motor oscillating and noise is greatly reduced.

Description

Motor

Technical field

The utility model relates to technical field of motors, in particular to a kind of motor more particularly to a kind of brushless, permanently Direct current generator.

Background technique

Permanent-magnet brushless DC electric machine is a kind of emerging efficient specific type of electric machine, is mainly characterized by small in size, structure is simple, Power density is big, output torque is big, but its vibration and noise are always the problem for perplexing people, can become when serious and directly determine The product can stable operation key factor and the bottleneck of standard limited value can be met, therefore how to reduce motor vibration and Noise becomes current urgent problem to be solved.

Utility model content

The utility model aims to solve the problem that at least one above-mentioned technical problem.

For this purpose, the purpose of the utility model is to provide a kind of motors.

To achieve the goals above, the technical solution of the utility model provides a kind of motor, including procapsid, is fixed on Stator punching, rotor assembly inside the procapsid and the back casing being connect with the procapsid, inside the procapsid Equipped with noise elimination cavity, acoustic damping materials are equipped in the noise elimination cavity；The procapsid has inner cylinder portion and is formed in the inner cylinder portion The seam allowance face of side, the stator punching are pressed into the inner cylinder portion by interference fit type and stop at the only aperture position.

The motor that the utility model above-mentioned technical proposal provides, stator punching are pressed into procapsid by interference fit type Inner cylinder portion, and the only aperture position of procapsid is stopped at, so, procapsid and stator punching form integral structure, mention The high contact stiffness of the two, greatly improves stator stiffness, advantageously reduces stator radiated noise；And it is set inside procapsid The noise elimination cavity for acoustic damping materials to be arranged is set, using the acoustic damping materials in the noise elimination cavity of setting, is eliminated the noise to noise of motor, from And vibration and the noise of motor is greatly reduced.

Specifically, noise of motor is broadly divided into mechanical noise, electromagnetic noise, aerodynamic noise, electromagnetic noise mainly by In motor under the action of radial electromagnetic force wave, electromagnetic force is directly acted on stator and rotor, and stator and rotor iron core will generate Vibration, and then noise is generated, analysis shows, the more than and stator stiffness size related to electromagnetic force size of electromagnetic noise size There are much relations, the above scheme of the utility model, stator punching and procapsid to form integral type knot using interference fit type Structure fundamentally improves stator stiffness, to have good improvement to electromagnetic noise under the premise of cost and balanced manufacture Effect；And in conjunction with the acoustic damping materials being arranged inside procapsid, good noise elimination is carried out to noise of motor, to be greatly reduced Motor oscillating and noise.

In addition, the motor provided in the utility model above-mentioned technical proposal can also have following additional technical feature:

In the above-mentioned technical solutions, it is preferable that the noise elimination cavity is arranged around the inner cylinder portion, and the noise elimination cavity has court To the opening of the back casing.

Noise elimination cavity is arranged around inner cylinder portion namely noise elimination cavity is arranged around the stator punching positioned at inner cylinder portion, in this way can be with Prevent noise of motor from propagating along surrounding either direction to outside motor, so that vibration and the noise of motor be effectively reduced.

In the above-mentioned technical solutions, it is preferable that the noise elimination cavity is the annular chamber around the all-pass of inner cylinder portion setting； Or the noise elimination cavity around the inner cylinder portion be arranged, the procapsid be equipped with for by the noise elimination cavity it is circumferentially spaced be more Muscle between a sub- chamber.

Noise elimination cavity is designed to the annular chamber of all-pass, is conducive to the operation that acoustic damping materials are filled or be laid in noise elimination cavity, And prevent noise of motor from propagating along surrounding either direction to outside motor using the acoustic damping materials being arranged in annular chamber, it is ensured that eliminate the noise Noise reduction effect；Noise elimination cavity is separated into multiple sub- chambers using muscle, muscle is provided with the structure for being conducive to improve procapsid Intensity.

In the above-mentioned technical solutions, it is preferable that noise elimination cavity described in single layer is equipped with inside the procapsid；Or the procapsid Inside is equipped with noise elimination cavity described in multilayer, and successively ring set is arranged noise elimination cavity described in multilayer.

Noise elimination cavity, which can according to need, is designed to single-layer or multi-layer, for the side of multilayer noise elimination cavity is arranged inside procapsid Case can fill or be laid with respectively different acoustic damping materials in multilayer noise elimination cavity, to realize that a variety of acoustic damping materials combinations disappear The effect of sound, to substantially reduce vibration and the noise of motor.

In the above-mentioned technical solutions, it is preferable that the acoustic damping materials include at least one sound absorption material with sound absorption characteristics Material or the acoustic damping materials include at least one sound insulating material with sound insulation characteristics.

In the above-mentioned technical solutions, it is preferable that the sound-absorbing material is sponge, mineral wool or polyester cotton, the sound insulation material Material is polyurethane or rubber.

Acoustic damping materials can choose the sound-absorbing material with sound absorption characteristics or the sound insulating material with sound insulation characteristics, and absorb sound material Material can be loose porous material, such as sponge, mineral wool, polyester cotton, sound insulating material can attach most importance to and closely knit material, such as Polyurethane, rubber etc.；It can according to need and a kind of above-mentioned material is filled or be laid in noise elimination cavity or multiple material carries out group It closes and eliminates the noise, for the scheme that multiple material combination is eliminated the noise, be only that herein and illustrate to combine noise elimination effect, do not limit each material specifically Use ratio.

In the above-mentioned technical solutions, it is preferable that the procapsid is integrally cylindrical or square column type.

Certainly, the shape of procapsid is not limited to above-mentioned specific restriction, and the noise elimination cavity of procapsid and the shape of inner cylinder portion can also To rationally design as needed, it is not specifically limited herein.

In any of the above-described technical solution, it is preferable that the procapsid is equipped with circumferentially arranged multiple be bolted Position, the back casing, which is equipped with, is correspondingly connected with position with multiple corresponding bolts in position that are bolted respectively, the procapsid and The back casing is bolted.

Procapsid and back casing are bolted, and are connected firmly, convenient for disassembly and assembly, and being bolted quantity may be selected 3~6 holes Position is arranged circumferentially.

In any of the above-described technical solution, it is preferable that the rotor assembly includes rotor punching, shaft, rotor magnet, packet Moulding material, the rotor punching are fixed on the shaft, and the rotor magnet is fixed on the rotor by the covered material Punching is separated with gap between the rotor magnet and the stator punching.

For protecting rotor magnet, rotor magnet is located between covered material covered material, on the one hand can prevent rotor magnetic Body is mobile, and the magnetic sheet that on the other hand can prevent rotor magnet from generating enters inside air gap.

In the above-mentioned technical solutions, it is preferable that one end of the shaft is connect by first bearing with the procapsid, institute The other end for stating shaft is connect by second bearing with the back casing, and wave is equipped between the first bearing and the procapsid Type washer, to prevent shaft axial float using wave mode washer.

The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this The practice of type is recognized.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the half section schematic of the motor of the utility model one embodiment；

Fig. 2 is the schematic perspective view of the motor of the utility model one embodiment；

Fig. 3 is the structural schematic diagram of the rotor assembly of the utility model one embodiment；

Fig. 4 is the schematic cross-sectional view of the procapsid of the utility model one embodiment；

Fig. 5 is the schematic cross-sectional view of the procapsid of the utility model another embodiment；

Fig. 6 is the schematic perspective view of the procapsid of the utility model one embodiment；

Fig. 7 is the schematic perspective view of the procapsid of the utility model another embodiment.

Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 1 into Fig. 7 are as follows:

1 shaft, 2 belt pulleys, 3 wave mode washers, 4 first bearings, 5 covered materials, 6 rotor punchings, 7 rotor magnets, 8 stators Punching, 9 procapsids, 10 acoustic damping materials, 11 are bolted position, 12 back casings, 13 second bearings, 901 noise elimination cavities, 902 inner cylinder portions, 903 seam allowance faces, 904 muscles.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are explained in the following description in order to fully understand the utility model, still, this is practical Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously It is not limited by the specific embodiments disclosed below.

The motor according to the utility model some embodiments is described referring to Fig. 1 to Fig. 7.

As shown in Figures 1 to 7, a kind of motor that some embodiments according to the present utility model provide, including procapsid 9, It is fixed on the stator punching 8 inside procapsid 9, rotor assembly and the back casing 12 connecting with procapsid 9.

Specifically, it is equipped with noise elimination cavity 901 inside procapsid 9, is equipped with acoustic damping materials 10 in noise elimination cavity 901；Procapsid 9 has Inner cylinder portion 902 and the seam allowance face 903 for being formed in 902 inside of inner cylinder portion, stator punching 8 are pressed into inner cylinder portion by interference fit type 902 and stop at 903 position of seam allowance face.

The utility model motor provided by the above embodiment, stator punching 8 are pressed into procapsid 9 by interference fit type Inner cylinder portion 902, and 903 position of seam allowance face of procapsid 9 is stopped at, so, procapsid 9 and stator punching 8 form one Formula structure improves the contact stiffness of the two, greatly improves stator stiffness, advantageously reduce stator radiated noise；And preceding Noise elimination cavity 901 for acoustic damping materials 10 to be arranged is set inside shell 9, using the acoustic damping materials 10 in the noise elimination cavity 901 of setting, It eliminates the noise to noise of motor, so that vibration and the noise of motor be greatly reduced.

Specifically, noise of motor is broadly divided into mechanical noise, electromagnetic noise, aerodynamic noise, electromagnetic noise mainly by In motor under the action of radial electromagnetic force wave, electromagnetic force is directly acted on stator and rotor, and stator and rotor iron core will generate Vibration, and then noise is generated, analysis shows, the more than and stator stiffness size related to electromagnetic force size of electromagnetic noise size There are much relations, the above scheme of the utility model, stator punching 8 and procapsid 9 to form integral type using interference fit type Structure fundamentally improves stator stiffness, changes well to have to electromagnetic noise under the premise of cost and balanced manufacture Kind effect；And in conjunction with the acoustic damping materials 10 being arranged inside procapsid 9, good noise elimination is carried out to noise of motor, thus greatly Width reduces motor oscillating and noise.

The method that above-described embodiment improves stator stiffness is then to be passed through stator punching 8 by heating procapsid 9 It is full of inside the technique loading procapsid 9 of cooperation and stops at 903 position of seam allowance face of procapsid 9, so, 9 He of procapsid Stator punching 8 forms integral structure, improves the contact stiffness of the two, greatly improves stator stiffness, and it is fixed to advantageously reduce Sub- radiated noise.

The noise elimination cavity for filling or being laid with the acoustic damping materials 10 with noise elimination or sound insulation characteristics is equipped with inside procapsid 9 901, it further reduced the noise of motor generation；It can be laid with the acoustic damping materials 10 with acoustic characteristics in noise elimination cavity 901, drop Material 10 of making an uproar can choose loose porous material, such as sponge, mineral wool, polyester cotton, can also fill tool in noise elimination cavity 901 There are the acoustic damping materials 10 of sound insulation characteristics, acoustic damping materials 10 can choose again and closely knit material, such as polyurethane, rubber；Certainly, It can according to need and fill or be laid with a kind of above-mentioned material in noise elimination cavity 901 or multiple material is combined noise elimination, for The scheme that multiple material combination is eliminated the noise is only that herein and illustrates to combine noise elimination effect, do not limit the use ratio of each material specifically.

Preferably, as shown in Figure 6 and Figure 7, noise elimination cavity 901 is arranged around inner cylinder portion 902 namely noise elimination cavity 901 is around position It is arranged in the stator punching 8 of inner cylinder portion 902, can prevents noise of motor from propagating along surrounding either direction to outside motor in this way, from And vibration and the noise of motor is effectively reduced；As shown in Figure 1, noise elimination cavity 901 has the opening towards back casing 12, design in this way Convenient for acoustic damping materials 10 are filled or are laid in noise elimination cavity 901.

The structure for the noise elimination cavity 901 being equipped with inside procapsid 9 can there are many patterns, need settable one according to noise reduction Layer noise elimination cavity 901, as shown in Figure 4；May also set up multilayer noise elimination cavity 901, as shown in Figure 5, it is preferable that multilayer noise elimination cavity 901 according to Secondary ring set setting；The cavity body structure of noise elimination cavity 901 can also be adjusted as needed, may be configured as all-pass structure, such as Fig. 6 institute Show, noise elimination cavity 901 is the annular chamber for the all-pass being arranged around inner cylinder portion 902；It may be alternatively provided as the structure of muscle 904 between including, As shown in fig. 7, noise elimination cavity 901 around inner cylinder portion be arranged, procapsid 9 be equipped with for by noise elimination cavity 901 it is circumferentially spaced be more Muscle 904 between a sub- chamber, it is preferable that muscle 904 between being disposed with 4~12 is evenly distributed on procapsid 9.

Preferably, the whole cylindrical or square column type of procapsid 9, certainly, the shape of procapsid 9 is not limited to above-mentioned specific limit Fixed, the noise elimination cavity 901 of procapsid 9 and the shape of inner cylinder portion also can according to need rational design, be not specifically limited herein.

The connection structure of procapsid 9 and back casing 12, as shown in Fig. 2, procapsid 9 is equipped with circumferentially arranged multiple spiral shells Bolt connection position 11, back casing 12, which is equipped with, is correspondingly connected with position, 9 He of procapsid with multiple corresponding bolts in position 11 that are bolted respectively Back casing 12 is bolted, and is bolted optional 3~6 hole locations of quantity and is arranged circumferentially.

The structure of the rotating part of motor, as shown in figure 3, include shaft 1, belt pulley 2, covered material 5, rotor punching 6, The components such as rotor magnet 7 are referred to as rotor assembly, and rotor assembly is the substantially columnar component axially extended, and by first axle 4 and the bearing of second bearing 13 are held, and is rotated centered on the central axis A1 of shaft 1.

In one specific embodiment, as shown in figures 1 and 3, stator punching 8 is pressed into procapsid 9 by interference fit type And 903 position of seam allowance face of procapsid 9 is stopped at, play the role of improving 8 rigidity of stator punching；Before acoustic damping materials 10 are filled into Noise elimination cavity 901 inside shell 9 plays the role of eliminating the noise to noise of motor；Rotor punching 6 is fixed on shaft 1, rotor magnet 7 It is fixed on rotor punching 6 by covered material 5, and between rotor magnet 7 and stator punching 8 and Insulating frame (not shown) are separated with Gap, wherein for protecting rotor magnet 7, rotor magnet 7 is located between covered material 5 covered material 5, on the one hand can anti-rotation stop Sub- magnet 7 is mobile, and the magnetic sheet that on the other hand can prevent rotor magnet 7 from generating enters inside air gap；One end of shaft 1 passes through first Bearing 4 is fixed on procapsid 9, and the other end of shaft 1 is fixed on back casing 12 by second bearing 13, in order to prevent 1 axis of shaft To play, wave mode washer 3 is equipped between first bearing 4 and procapsid 9.

Specifically, the motor can be permanent-magnet brushless DC electric machine.

In conclusion motor provided by the embodiment of the utility model, stator punching are pressed into front housing by interference fit type Body and the only aperture position for stopping at procapsid, play the role of improving stator punching rigidity, also helping reduces stator radiation Noise；Noise elimination cavity is set inside procapsid, and fills or be laid with acoustic damping materials in noise elimination cavity, plays and eliminates the noise to noise of motor Effect, motor oscillating and noise is greatly reduced.

Make have sufficient space layout sound insulating material and sound absorption structure inside motor, thus not increasing front housing as much as possible In the case where the wall thickness of body, the combination eliminated the noise by sound insulating material sound insulation noise elimination and sound absorption structure sound-absorbing, reaching reduces motor fortune The purpose of noise when row.

In the description of the utility model, it is to be understood that the orientation or positional relationship of the instructions such as term "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or unit must have specific direction, be constructed and operated in a specific orientation, it is thus impossible to understand For limitations of the present invention.

In the description of the present invention, unless otherwise clearly defined and limited, term " connected ", " connection ", " Gu It is fixed " etc. shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or integrally connect It connects, or electrical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill people of this field For member, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples In can be combined in any suitable manner.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of motor, including procapsid, the stator punching being fixed on inside the procapsid, rotor assembly and with it is described The back casing of procapsid connection, which is characterized in that

It is equipped with noise elimination cavity inside the procapsid, is equipped with acoustic damping materials in the noise elimination cavity；

The seam allowance face that the procapsid has inner cylinder portion and is formed on the inside of the inner cylinder portion, the stator punching are matched by interference Conjunction mode is pressed into the inner cylinder portion and stops at the only aperture position.

2. motor according to claim 1, which is characterized in that

The noise elimination cavity is arranged around the inner cylinder portion, and the noise elimination cavity has the opening towards the back casing.

3. motor according to claim 1, which is characterized in that

The noise elimination cavity is the annular chamber around the all-pass of inner cylinder portion setting；Or

The noise elimination cavity is arranged around the inner cylinder portion, and the procapsid is equipped with for being by the noise elimination cavity is circumferentially spaced Muscle between multiple sub- chambers.

4. motor according to claim 1, which is characterized in that

Noise elimination cavity described in single layer is equipped with inside the procapsid；Or

Noise elimination cavity described in multilayer is equipped with inside the procapsid, successively ring set is arranged noise elimination cavity described in multilayer.

5. motor according to claim 1, which is characterized in that

The acoustic damping materials include at least one sound-absorbing material with sound absorption characteristics or the acoustic damping materials include at least one Sound insulating material with sound insulation characteristics.

6. motor according to claim 5, which is characterized in that

The sound-absorbing material is sponge, mineral wool or polyester cotton, and the sound insulating material is polyurethane or rubber.

7. motor according to claim 1, which is characterized in that

The procapsid is integrally cylindrical or square column type.

8. motor according to any one of claim 1 to 7, which is characterized in that

The procapsid be equipped with it is circumferentially arranged it is multiple be bolted position, the back casing be equipped with respectively with it is multiple described It is bolted the corresponding bolt in position and is correspondingly connected with position, the procapsid and the back casing are bolted.

9. motor according to any one of claim 1 to 7, which is characterized in that

The rotor assembly includes rotor punching, shaft, rotor magnet, covered material, and the rotor punching is fixed on described turn Axis, the rotor magnet are fixed on the rotor punching, the rotor magnet and the stator punching by the covered material Between be separated with gap.

10. motor according to claim 9, which is characterized in that

One end of the shaft connect by first bearing with the procapsid, the other end of the shaft pass through second bearing and The back casing connection, is equipped with wave mode washer between the first bearing and the procapsid.