CN211239468U - Phase discrimination brushless motor - Google Patents
Phase discrimination brushless motor Download PDFInfo
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- CN211239468U CN211239468U CN202020138162.2U CN202020138162U CN211239468U CN 211239468 U CN211239468 U CN 211239468U CN 202020138162 U CN202020138162 U CN 202020138162U CN 211239468 U CN211239468 U CN 211239468U
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Abstract
The utility model discloses a phase discrimination brushless motor, including casing, motor shaft etc, stator module includes interconnect's stator core, stator support, and the last coiling of stator core has winding coil, still includes signal sensing system, and signal sensing system includes first signal inductor, second signal inductor, and first signal inductor sets up on stator support and is connected with motor line subassembly, and second signal inductor sets up on the casing, and first signal inductor, second signal inductor are corresponding. The utility model discloses set up first signal inductor on stator support, set up the second signal inductor on the casing, make whole signal sensing system keep away from the winding coil on the stator core, keep certain distance with the heat source, avoid high temperature environment to harm signal sensing system when realizing accurate control and accurate monitoring, be favorable to improving signal sensing system's signal quality and life-span.
Description
Technical Field
The utility model relates to a motor especially relates to a phase discrimination brushless motor.
Background
At present, a brushless motor for an electric two-wheeled vehicle generally adopts a signal sensor to sense the phase of a permanent magnet rotor. The signal inductor is all selected to install on stator core, but the signal inductor belongs to accurate electron device, easily receives the effect of mechanical stress when installing on stator core, influences signal quality, and winding coil on the stator core can generate heat at the during operation simultaneously, influences signal quality, so need make the improvement.
Disclosure of Invention
The utility model discloses to the high temperature environment fragile signal inductor that exists among the prior art, signal inductor signal quality defect such as poor, provide a new phase discrimination brushless motor.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a phase discrimination brushless motor comprises a casing, a motor shaft, a stator assembly, a rotor assembly and a motor wire assembly, wherein the stator assembly comprises a stator core and a stator support which are connected with each other, a winding coil is wound on the stator core, the casing is a hollow cavity, the stator assembly is positioned in the casing, the rotor assembly is connected with the casing and sleeved outside the stator assembly, the motor shaft passes through the casing, the stator support and the rotor assembly, the rotor assembly and the casing rotate around the stator assembly by taking the motor shaft as an axis, the motor wire assembly passes through the motor shaft and is connected with the stator assembly, the phase discrimination brushless motor further comprises a signal sensing system, the signal sensing system comprises a first signal inductor and a second signal inductor, the first signal inductor is arranged on the stator support and is connected with the motor wire assembly, the second signal inductor is arranged on the shell, and the first signal inductor corresponds to the second signal inductor.
The casing provides protection for stator assembly, rotor subassembly etc. and makes it avoid external force to damage. The stator assembly, the signal sensing system and the like can be powered through the motor wire assembly, so that each component can play the respective function. The utility model discloses set up first signal inductor on stator support, set up the second signal inductor on the casing, make whole signal sensing system keep away from the winding coil on the stator core, keep certain distance with the heat source, avoid high temperature environment to harm signal sensing system when realizing accurate control and accurate monitoring, be favorable to improving signal sensing system's signal quality and life-span.
Preferably, in the phase-discrimination brushless motor, the first signal sensor is a magnetic signal sensor, and the second signal sensor is a magnetic ring.
The magnetic signal sensor senses the change of the magnetic field and can convert the change into the change of the phase of the corresponding rotor assembly when the magnetic ring rotates. The phase detection of the rotor assembly can be realized by means of the magnetic signal sensor to induce the magnetic ring.
Preferably, in the phase-detecting brushless motor, the stator support is provided with a first connection end, and the first signal sensor is detachably connected to the first connection end.
The first connecting end is independently arranged on the stator support and used for installing the first signal inductor, so that the first signal inductor can be installed and replaced more conveniently.
Preferably, the phase-detecting brushless motor is provided with a second connection end on the casing, and the second signal sensor is detachably connected to the second connection end.
Set up the second link alone on the casing and be used for installing the second signal inductor, make the installation and the change of second signal inductor more convenient.
Preferably, the phase-detecting brushless motor comprises a left end cover and a right end cover, wherein the left end cover and the right end cover are detachably connected with the rotor assembly respectively, the motor shaft penetrates through the left end cover and the right end cover, the left end cover and the right end cover form a sealed accommodating cavity together with the rotor assembly, and the stator assembly is provided with the first signal inductor and the second signal inductor which are located in the accommodating cavity.
Divide into left end cover and right-hand member lid with the casing to adopt the mode that left end cover, right-hand member lid and rotor subassembly dismantlement formula are connected, the installation and the change of the motor of being convenient for.
Preferably, the phase-discrimination brushless motor is characterized in that an end cover hole and an end cover fastener are arranged on the right end cover, the rotor assembly is provided with an end cover mounting hole at a position corresponding to the end cover hole, and the right end cover passes through the end cover hole and the end cover fastener and the end cover mounting hole are detachably connected with the rotor assembly.
The quick detachable connection of the right end cover can be realized through the design of the end cover hole, the end cover fastener and the end cover mounting hole, and the assembly and the maintenance are convenient.
Preferably, in the phase-detecting brushless motor, the second connection end is disposed on the right end cover.
Can improve second link, end cover fastener etc. the utility model discloses the part of detachable performance is concentrated on the right-hand member lid, is convenient for improve installation and maintenance efficiency.
Preferably, the phase-detecting brushless motor is characterized in that a connecting lug and a sensor fastener are arranged on the second signal sensor, a sensor mounting hole is formed in a position, corresponding to the connecting lug, of the second connecting end, and the second signal sensor passes through the sensor fastener, the sensor mounting hole and the connecting lug and the second connecting end are detachably connected.
The design through inductor fastener, inductor mounting hole, engaging lug can realize the quick detachable connection of second signal inductor, the equipment and the maintenance of being convenient for.
Preferably, the phase-detecting brushless motor comprises a rotor assembly and a rim, wherein the rotor assembly comprises the rim and a permanent magnet which are connected with each other, the rim is connected with the casing and sleeved outside the stator assembly, the rim rotates around the stator assembly by taking the motor shaft as an axis, and the permanent magnet is positioned between the rim and the stator assembly.
After the stator assembly is electrified, the permanent magnet can be driven to drive the rim to rotate around the rim under the action of the magnetic field force, and the raised rim can be externally connected with an elastic tire, so that the casing is prevented from being in direct contact with the ground, and the casing is protected.
Preferably, the phase discrimination brushless motor is characterized in that a sealing gasket is arranged at the joint of the rim and the casing, and the sealing gasket is made of an elastic material.
Set up sealed the pad between rim and casing, can improve the utility model discloses a leakproofness.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is a schematic structural view of a right end cap and a second signal sensor of the present invention;
fig. 5 is a schematic structural view of the middle stator assembly and the first signal sensor of the present invention.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings 1-5 and the detailed description, but they are not intended to limit the invention:
example 1
The phase discrimination brushless motor comprises a housing 1, a motor shaft 3, a stator assembly 2, a rotor assembly 7 and a motor wire assembly 4, wherein the stator assembly 2 comprises a stator core 21 and a stator support 22 which are connected with each other, a winding coil is wound on the stator core 21, the housing 1 is a hollow cavity, the stator assembly 2 is positioned in the housing 1, the rotor assembly 7 is connected with the housing 1 and sleeved outside the stator assembly 2, the motor shaft 3 penetrates through the housing 1, the stator support 22 and the rotor assembly 7, the rotor assembly 7 and the housing 1 take the motor shaft 3 as an axis to wind the stator assembly 2 to rotate, the motor wire assembly 4 penetrates through the motor shaft 3 and connected with the stator assembly 2 and further comprises a signal sensing system, and the signal sensing system comprises a first signal inductor 8, a second signal inductor 2, a third signal inductor and a, And the second signal inductor 6, the first signal inductor 8 is arranged on the stator bracket 22 and connected with the motor wire assembly 4, the second signal inductor 6 is arranged on the machine shell 1, and the first signal inductor 8 corresponds to the second signal inductor 6.
In the working process of the motor, the motor wire assembly 4 is powered on, the winding coil on the stator core 21 is electrified and generates heat, the rotor assembly 7 rotates by taking the motor shaft 3 as an axis under the action of magnetic force, the machine shell 1 and the second signal inductor 6 arranged on the machine shell 1 synchronously rotate, the first signal inductor 8 fixed on the stator support 22 induces the magnetic field change caused by the rotation of the second signal inductor 6 and outputs an electric signal, and the electric signal can correspond to the phase change of the rotor assembly 7.
Preferably, the first signal inductor 8 is a magnetic signal sensor, and the second signal inductor 6 is a magnetic ring.
Preferably, the stator support 22 is provided with a first connection end 221, and the first signal inductor 8 is detachably connected to the first connection end 221.
Preferably, a second connection end 134 is disposed on the housing 1, and the second signal sensor 6 is detachably connected to the second connection end 134.
Preferably, the casing 1 includes a left end cover 11 and a right end cover 13, the left end cover 11 and the right end cover 13 are detachably connected to the rotor assembly 7, the motor shaft 3 passes through the left end cover 11 and the right end cover 13, the left end cover 11, the right end cover 13 and the rotor assembly 7 form a sealed accommodating cavity 12 together, and the stator assembly 2, the first signal sensor 8 and the second signal sensor 6 are located in the accommodating cavity 12.
Preferably, the right end cap 13 is provided with an end cap hole 131 and an end cap fastener 132, the rotor assembly 7 is provided with an end cap mounting hole 73 at a position corresponding to the end cap hole 131, and the right end cap 13 is detachably connected to the rotor assembly 7 through the end cap hole 131, the end cap fastener 132 and the end cap mounting hole 73.
Preferably, the second connecting end 134 is disposed on the right end cap 13.
Preferably, the second signal sensor 6 is provided with a connecting lug 61 and a sensor fastening member 62, the second connecting end 134 is provided with a sensor mounting hole 133 at a position corresponding to the connecting lug 61, and the second signal sensor 6 is detachably connected to the second connecting end 134 through the sensor fastening member 62, the sensor mounting hole 133 and the connecting lug 61.
Preferably, the rotor assembly 7 includes a rim 71 and a permanent magnet 72 connected to each other, the rim 71 is connected to the casing 1 and sleeved outside the stator assembly 2, the rim 71 rotates around the stator assembly 2 with the motor shaft 3 as an axis, and the permanent magnet 72 is located between the rim 71 and the stator assembly 2.
Preferably, a gasket 5 is disposed at a connection portion between the rim 71 and the casing 1, and the gasket 5 is made of an elastic material.
In the working process of the motor, the motor wire assembly 4 is powered on, the winding coil on the stator core 21 is electrified and generates heat, the permanent magnet 72 rotates around the stator core 21 under the action of magnetic force and takes the motor shaft 3 as an axis, and simultaneously drives the rim 71, the left end cover 11 and the right end cover 13 to rotate together, the second connecting end 134 on the right end cover 13 and the second signal inductor 6 synchronously rotate, the first signal inductor 8 fixed on the stator support 22 induces the magnetic field change caused by the rotation of the second signal inductor 6 and outputs an electric signal, and the electric signal can correspond to the phase change of the rotor assembly 7.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.
Claims (10)
1. A phase discrimination brushless motor comprises a casing (1), a motor shaft (3), a stator assembly (2), a rotor assembly (7) and a motor wire assembly (4), wherein the stator assembly (2) comprises a stator core (21) and a stator support (22) which are connected with each other, a winding coil is wound on the stator core (21), the casing (1) is a hollow cavity, the stator assembly (2) is positioned in the casing (1), the rotor assembly (7) is connected with the casing (1) and sleeved outside the stator assembly (2), the motor shaft (3) passes through the casing (1), the stator support (22) and the rotor assembly (7), the rotor assembly (7) and the casing (1) rotate around the stator assembly (2) by taking the motor shaft (3) as an axis, the motor wire assembly (4) passes through the motor shaft (3) and is connected with the stator assembly (2), the method is characterized in that: the motor line assembly is characterized by further comprising a signal sensing system, wherein the signal sensing system comprises a first signal inductor (8) and a second signal inductor (6), the first signal inductor (8) is arranged on the stator support (22) and connected with the motor line assembly (4), the second signal inductor (6) is arranged on the shell (1), and the first signal inductor (8) and the second signal inductor (6) correspond to each other.
2. A phase-discriminated brushless motor according to claim 1, characterized in that: the first signal inductor (8) is a magnetic signal sensor, and the second signal inductor (6) is a magnetic ring.
3. A phase-discriminated brushless motor according to claim 1, characterized in that: the stator support (22) is provided with a first connecting end (221), and the first signal inductor (8) is detachably connected with the first connecting end (221).
4. A phase-discriminated brushless motor according to claim 1, characterized in that: the casing (1) is provided with a second connecting end (134), and the second signal inductor (6) is detachably connected with the second connecting end (134).
5. A phase-discriminated brushless motor according to claim 4, characterized in that: casing (1) includes left end lid (11), right-hand member lid (13), left end lid (11) right-hand member lid (13) respectively with rotor subassembly (7) dismantlement formula is connected, motor shaft (3) pass left end lid (11) right-hand member lid (13), left end lid (11) right-hand member lid (13) rotor subassembly (7) form sealed chamber (12) that holds jointly, stator module (2) first signal inductor (8) second signal inductor (6) are located hold in the chamber (12).
6. A phase-discriminated brushless motor according to claim 5, wherein: the right end cover (13) is provided with an end cover hole (131) and an end cover fastener (132), the rotor assembly (7) is provided with an end cover mounting hole (73) at a position corresponding to the end cover hole (131), and the right end cover (13) passes through the end cover hole (131) and the end cover fastener (132) and the end cover mounting hole (73) are detachably connected with the rotor assembly (7).
7. A phase-discriminated brushless motor according to claim 6, characterized in that: the second connection end (134) is arranged on the right end cover (13).
8. A phase-discriminated brushless motor according to claim 7, wherein: be provided with engaging lug (61), inductor fastener (62) on second signal inductor (6), second link (134) with engaging lug (61) correspond the position and are provided with inductor mounting hole (133), second signal inductor (6) pass through inductor fastener (62) inductor mounting hole (133) engaging lug (61) with second link (134) dismantlement formula is connected.
9. A phase-discriminated brushless motor according to claim 1, characterized in that: the rotor assembly (7) comprises a rim (71) and a permanent magnet (72) which are connected with each other, the rim (71) is connected with the casing (1) and sleeved outside the stator assembly (2), the rim (71) rotates around the stator assembly (2) by taking the motor shaft (3) as an axis, and the permanent magnet (72) is located between the rim (71) and the stator assembly (2).
10. A phase-discriminated brushless motor according to claim 9, wherein: the wheel rim (71) and the joint of the casing (1) are provided with a sealing gasket (5), and the sealing gasket (5) is made of elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020138162.2U CN211239468U (en) | 2020-01-21 | 2020-01-21 | Phase discrimination brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020138162.2U CN211239468U (en) | 2020-01-21 | 2020-01-21 | Phase discrimination brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211239468U true CN211239468U (en) | 2020-08-11 |
Family
ID=71923046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020138162.2U Active CN211239468U (en) | 2020-01-21 | 2020-01-21 | Phase discrimination brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211239468U (en) |
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2020
- 2020-01-21 CN CN202020138162.2U patent/CN211239468U/en active Active
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