CN210380434U - Rotor punching sheet convenient for heat dissipation - Google Patents
Rotor punching sheet convenient for heat dissipation Download PDFInfo
- Publication number
- CN210380434U CN210380434U CN201921189419.0U CN201921189419U CN210380434U CN 210380434 U CN210380434 U CN 210380434U CN 201921189419 U CN201921189419 U CN 201921189419U CN 210380434 U CN210380434 U CN 210380434U
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- heat dissipation
- groove
- shaft hole
- louvre
- rotor
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Abstract
The utility model discloses a rotor punching convenient to heat dissipation, its technical scheme main points are: including towards the piece body, be equipped with the shaft hole towards piece body center, evenly distributed has the wire winding groove towards on the circumference lateral wall of piece body, and adjacent wire winding groove forms the wire winding tooth, is equipped with a plurality of louvres around shaft hole evenly distributed and a plurality of and louvre complex ventilation groove towards the piece body, and the louvre is in between wire winding groove and the shaft hole, ventilation groove one end and close louvre intercommunication, and the ventilation groove other end extends to on the close circumference lateral wall towards the piece body. When the plurality of punching sheet bodies are combined into the rotor, the heat dissipation holes on the punching sheet bodies are communicated and form heat dissipation channels; the flow velocity of the wind in the heat dissipation channel is larger than the flow velocity between the gaps, so that the air pressure in the heat dissipation channel is lower, the air on one side of the gaps can enter the heat dissipation channel through the ventilation grooves under the action of air pressure difference, heat near the ventilation grooves is driven to move together, and the overall heat dissipation efficiency of the rotor is improved.
Description
Technical Field
The utility model relates to the technical field of electric machines, in particular to rotor punching convenient to heat dissipation.
Background
The rotor is formed by laminating rotor punching sheets.
At present, chinese patent with publication number CN205212580U discloses a rotor punching sheet, which comprises a sheet body, wherein a shaft hole is arranged in the middle of the sheet body, winding grooves are circumferentially distributed on the sheet body, winding posts are formed on adjacent winding grooves, each winding groove comprises a bar-shaped winding portion extending towards the center of the sheet body and a contraction port located at the edge of the sheet body, the winding portions are communicated with the contraction ports, the width of each winding portion is the same everywhere, triangular barbs are linearly distributed on two side walls of the winding portion, and the barbs are formed by integrally punching the winding posts.
Certain clearance can be left between the stator of motor and the rotor to avoid the rotor to rotate in-process and the stator takes place the friction, and in order to reduce the whole volume of motor, the width in clearance can be smaller, but to the motor of ventilation cooling in using, when less clearance can lead to using ventilation cooling, the amount of wind through the clearance is few, it is low to the thermal radiating efficiency of rotor production, and use foretell rotor punching to fold the rotor that the pressure is and lack other heat dissipation means again, lead to the high normal use of rotor's temperature easily.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a rotor punching convenient to heat dissipation, it has the radiating advantage of accelerating whole rotor.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a rotor punching convenient to heat dissipation, includes towards the piece body, be equipped with the shaft hole towards piece body center, evenly distributed has the wire winding groove on the circumference lateral wall towards the piece body, and adjacent wire winding groove forms the wire winding tooth, be equipped with a plurality of louvres around shaft hole evenly distributed and a plurality of and louvre complex ventilation groove towards the piece body, the louvre is in between wire winding groove and the shaft hole, ventilation groove one end and close louvre intercommunication, and the ventilation groove other end extends to on the close circumference lateral wall towards the piece body.
Through the technical scheme, when the plurality of punching sheet bodies are combined into the rotor, the end face of the rotor is provided with the heat dissipation channel formed by communicating the heat dissipation holes; when the motor works, the wind for heat dissipation blows in the gap between the rotor and the stator on the one hand, and on the other hand can also blow in the heat dissipation channel, the flow velocity of the wind in the heat dissipation channel is larger than the flow velocity between the gaps, so that the air pressure in the heat dissipation channel is lower, the air on one side of the gap can enter the heat dissipation channel through the ventilation groove under the action of the air pressure difference, and the heat near the ventilation groove can be driven to move together in the process, the heat dissipation of the rotor is accelerated, and the overall heat dissipation efficiency of the rotor is improved.
Preferably, the punching sheet bodies are provided with positioning blocks and positioning grooves, and adjacent punching sheet bodies are connected with the positioning grooves through the positioning blocks.
Through above-mentioned technical scheme, the rotor punching of being convenient for piles up, reduces to take place pivoted possibility between the adjacent rotor punching, makes the louvre on the adjacent rotor punching can the one-to-one, reduces the error of butt joint.
Preferably, the locating piece sets up the both sides in the shaft hole with the constant head tank symmetry, and the center of locating piece is in on the central line of close louvre and shaft hole, and the center of constant head tank is in the louvre of corresponding side and the central line in shaft hole on, the louvre has six, the ventilation groove has threely, and three ventilation groove communicates with three spaced louvre respectively.
Through above-mentioned technical scheme, when making up into the rotor towards the piece body, the crisscross setting of ventilation groove on the adjacent piece body towards, the ventilation groove along rotor circumference evenly distributed still can play the heat dissipation to whole rotor, and only need set up three ventilation groove on the single piece body towards, the structural strength towards the piece body is guaranteed.
Preferably, the ventilation groove comprises a first groove part and a second groove part, the length direction of the first groove part is parallel to the radial direction of the punching sheet body, the length direction of the second groove part is inclined to the length direction of the first groove part, and the first groove part is communicated with the corresponding heat dissipation holes through the second groove part.
Through above-mentioned technical scheme, when the motor equipment, make first slot part open on the circumference lateral wall towards rotor pivoted direction towards the piece body, make the air enter into first slot part more easily, make the radiating effect better.
Preferably, an arc surface is arranged on the side face of one side of the winding teeth, which is far away from the end of the punching sheet body, and one end, which is far away from the shaft hole, of the first groove part is opened on the arc surface of the winding teeth.
Through above-mentioned technical scheme, there is certain distance on the adjacent winding tooth tip towards between the piece body, and this distance diminishes gradually along the radial direction towards the piece body, further makes things convenient for the air to enter into first trough portion.
Preferably, the centers of the heat dissipation holes are all located on the central line close to the winding teeth.
Through above-mentioned technical scheme, the length between wire winding tooth to the shaft hole is great relatively, and the structure intensity influence to the towards piece body of seting up of louvre is less.
Preferably, the side wall of the shaft hole is provided with two key slots, and the two key slots are arranged in a central symmetry manner of the shaft hole.
Through the technical scheme, when the rotor is assembled by rotating the same punching sheet body, two smooth key grooves for installing the rotating shaft can be formed, so that the rotating shaft can be installed by randomly selecting one of the key grooves.
Preferably, the center connecting line of the positioning groove and the positioning block is perpendicular to the center connecting line of the two key grooves.
Through above-mentioned technical scheme, further reduce the influence to the structural strength who dashes the piece body, prolong the life of whole rotor.
To sum up, the utility model discloses the beneficial effect who contrasts in prior art does: through setting up louvre and ventilation groove, make the heat radiating area who is constituteed by towards the piece body in the use increase, and adjacent have certain air current between the piece body towards, strengthen the radiating effect.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a schematic view of an assembly structure according to the embodiment.
Reference numerals: 1. punching a sheet body; 11. a shaft hole; 12. a winding slot; 13. a winding tooth; 2. heat dissipation holes; 3. a ventilation slot; 31. a first groove portion; 32. a second groove portion; 4. positioning blocks; 5. positioning a groove; 6. a keyway.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a rotor punching sheet convenient to heat dissipation, as shown in figure 1, including punching sheet body 1, central point towards sheet body 1 puts and is equipped with shaft hole 11, be equipped with the keyway 6 that two symmetries set up on shaft hole 11's the lateral wall, set up a plurality of evenly distributed's wire winding groove 12 on punching sheet body 1's the circumference lateral wall, wire winding groove 12 keeps away from shaft hole 11's one end width and is greater than wire winding groove 12 and is close to the width of shaft hole 11 one end, form wire winding tooth 13 between the adjacent wire winding groove 12, wire winding tooth 13 keeps away from one side lateral wall of shaft hole 11's.
Referring to fig. 1, be equipped with six on the terminal surface of punching sheet body 1 around shaft hole 11 evenly distributed's louvre 2 and three ventilation groove 3, louvre 2 is in between wire winding groove 12 and the shaft hole 11, and the both ends of louvre 2 run through the both ends of punching sheet body 1 respectively, and the center of louvre 2 all is in on the central line of close wire winding tooth 13. The ventilation groove 3 all is in on the same terminal surface towards piece body 1 with 13 cambered surfaces of wire winding tooth, and three ventilation groove 3 is linked together with the louvre 2 that three interval set up respectively. The ventilation slot 3 includes first slot portion 31 and second slot portion 32, the length direction of first slot portion 31 is parallel with the radial direction towards piece body 1, the one end and the corresponding louvre 2 intercommunication of first slot portion 31, the other end of first slot portion 31 extends the cambered surface of the wire winding tooth 13 to the corresponding side and is connected with second slot portion 32, the length direction of second slot portion 32 inclines in the length direction of first slot portion 31, the lateral wall of the cambered surface of the wire winding tooth 13 of first slot portion 31 and corresponding side communicates with each other, the incline direction of the second slot portion 32 on the same piece body 1 is the same.
Referring to fig. 1, a positioning block 4 and a positioning groove 5 are arranged on a punching sheet body 1. The positioning grooves 5 penetrate through two ends of the punching sheet body 1, the height of the positioning block 4 is the same as the thickness of the punching sheet body 1, the positioning block 4 and the positioning grooves 5 are symmetrically arranged on two sides of the shaft hole 11, the center connecting line of the positioning grooves 5 and the positioning block 4 is perpendicular to the center connecting line of the two key grooves 6, the center of the positioning block 4 is located on the center connecting line of the heat dissipation holes 2 close to the center connecting line of the shaft hole 11, and the center of the positioning groove 5 is located on the center connecting line of the heat dissipation holes 2 on the corresponding side and the.
In the actual assembling process, when a plurality of punching sheet bodies 1 are stacked, the state can refer to fig. 2, the punching sheet body 1 below is placed in a mode that the positioning block 4 faces upwards, the punching sheet body 1 above enables the positioning groove 5 to be aligned to the positioning block 4 below through rotation, and the punching sheet body 1 above is vertically put down. When adjacent towards piece body 1 links together, the ventilation groove 3 on two towards piece bodies 1 sets up in turn respectively.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (8)
1. The utility model provides a rotor punching convenient to heat dissipation, includes towards piece body (1), be equipped with shaft hole (11) towards piece body (1) center, evenly distributed has wire winding groove (12) on the circumference lateral wall towards piece body (1), and adjacent wire winding groove (12) form winding tooth (13), characterized by: be equipped with a plurality of louvres (2) around shaft hole (11) evenly distributed and a plurality of and louvre (2) complex ventilation groove (3) on towards piece body (1), louvre (2) are in between wire winding groove (12) and shaft hole (11), ventilation groove (3) one end and close louvre (2) intercommunication, and ventilation groove (3) other end extends to on the circumference lateral wall of close towards piece body (1).
2. The rotor sheet convenient for heat dissipation according to claim 1, characterized in that: the punching sheet body (1) is provided with a positioning block (4) and a positioning groove (5), and adjacent punching sheet bodies (1) are connected with the positioning groove (5) through the positioning block (4).
3. The rotor sheet convenient for heat dissipation according to claim 2, wherein: locating piece (4) and constant head tank (5) symmetry set up the both sides in shaft hole (11), and the center of locating piece (4) is in on the central line of close louvre (2) and shaft hole (11), the center of constant head tank (5) is in on the central line with shaft hole (11) of louvre (2) of corresponding side, louvre (2) have six, ventilation groove (3) have threely, and three ventilation groove (3) communicate with three spaced louvre (2) respectively.
4. The rotor sheet convenient for heat dissipation according to claim 1, characterized in that: the ventilation groove (3) comprises a first groove part (31) and a second groove part (32), the length direction of the first groove part (31) is parallel to the radial direction of the punching sheet body (1), the length direction of the second groove part (32) is inclined to the length direction of the first groove part (31), and the first groove part (31) is communicated with the corresponding heat dissipation hole (2) through the second groove part (32).
5. The rotor sheet convenient for heat dissipation according to claim 4, wherein: the side face, away from the end part of the punching sheet body (1), of the winding teeth (13) is provided with an arc face, and one end, away from the shaft hole (11), of the first groove part (31) is opened on the arc face of the winding teeth (13).
6. The rotor sheet convenient for heat dissipation according to claim 1, characterized in that: the centers of the heat dissipation holes (2) are all positioned on the central line close to the winding teeth (13).
7. The rotor sheet convenient for heat dissipation according to claim 3, wherein: be equipped with two keyway (6) on the lateral wall in shaft hole (11), two keyway (6) set up with shaft hole (11) centrosymmetry.
8. The rotor sheet convenient for heat dissipation according to claim 7, wherein: and the central connecting line of the positioning groove (5) and the positioning block (4) is vertical to the central connecting line of the two key grooves (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189419.0U CN210380434U (en) | 2019-07-26 | 2019-07-26 | Rotor punching sheet convenient for heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921189419.0U CN210380434U (en) | 2019-07-26 | 2019-07-26 | Rotor punching sheet convenient for heat dissipation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210380434U true CN210380434U (en) | 2020-04-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921189419.0U Expired - Fee Related CN210380434U (en) | 2019-07-26 | 2019-07-26 | Rotor punching sheet convenient for heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210380434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564358A (en) * | 2020-11-10 | 2021-03-26 | 湖南科技大学 | Design method of axial ventilation slot of alternating-current traction motor rotor tooth part |
-
2019
- 2019-07-26 CN CN201921189419.0U patent/CN210380434U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564358A (en) * | 2020-11-10 | 2021-03-26 | 湖南科技大学 | Design method of axial ventilation slot of alternating-current traction motor rotor tooth part |
| CN112564358B (en) * | 2020-11-10 | 2022-06-28 | 湖南科技大学 | Design method of axial ventilation slot of alternating-current traction motor rotor tooth part |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 Termination date: 20210726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |