CN213151749U - High-efficiency starting motor with built-in reinforcing ring - Google Patents
High-efficiency starting motor with built-in reinforcing ring Download PDFInfo
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- CN213151749U CN213151749U CN202022326134.6U CN202022326134U CN213151749U CN 213151749 U CN213151749 U CN 213151749U CN 202022326134 U CN202022326134 U CN 202022326134U CN 213151749 U CN213151749 U CN 213151749U
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- armature coil
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- reinforcing ring
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Abstract
The utility model provides a high-efficient starter motor of built-in reinforcement ring, it includes stator assembly, rotor assembly includes armature core, armature coil, reinforcement ring, armature core has arranged a plurality of wiring grooves, armature coil is "U" form, the both ends of armature coil open end pass the wiring groove, armature coil's blind end is located the outside of wiring groove, be equipped with reinforcement ring on the armature shaft, reinforcement ring is located in the armature coil blind end, be full of insulating varnish in the armature coil blind end. Because the reinforcing ring is internally arranged, a space is provided for increasing the diameter of the armature coil, the conducting wire of the armature coil can be more outward close to the magnet exciting coil in the stator assembly, the force arm of the armature coil for driving the rotor assembly to rotate is increased, the driving force of the armature coil can be increased, the output torque can be at least improved by 15 percent under the condition that the power of the starting motor is not changed, and the starting performance of the starting motor is also greatly improved.
Description
Technical Field
The utility model relates to a starter motor, more specifically say, the utility model relates to a starter motor for heavily carrying vehicle diesel engine.
Background
Diesel engines are widely used in heavy-duty vehicles due to their advantages of large torque and good economic performance. However, since diesel oil has a higher viscosity than gasoline and is not easily evaporated, it cannot be ignited by electric spark, and can be ignited only by cylinder compression ignition, so that the diesel engine needs a starter motor with a strong starting torque when starting. The current common method is to add a speed reducing mechanism in the power output process of the starting motor to achieve the purpose of increasing torque, which requires the starting motor to have higher rotating speed, and the rotating speed of the current common starting motor is about 30000 rpm. The starting motor is an important part of the engine, and the starting motor is required to have good starting performance, small volume, compact structure, less material consumption and reasonable cost, which is also the development direction of the starting motor.
As shown in fig. 1, in a starter motor in the prior art, due to the high rotation speed of the starter motor, the mechanical strength of the armature coil portions located at the outer sides of the two ends of the armature core is difficult to overcome the action of centrifugal force, and the armature coil portions are often deformed outward and raised to touch the excitation coil located at the outer side. Because the outer diameter formed by the armature coil is reduced inwards due to the annular reinforcing ring, the output torque of the starting motor is difficult to reach the utmost point by knowing that the torque is equal to the force multiplied by the moment arm.
Disclosure of Invention
In order to overcome the above-mentioned defects, the utility model discloses the technical problem that needs to solve is: provided is a high-efficiency starter motor with a built-in reinforcing ring, which can output extremely high torque without changing the external dimension of the existing starter motor.
The utility model provides a technical scheme that prior art exists the problem is: a high-efficiency starting motor with a built-in reinforcing ring comprises a shell, wherein a hollow stator assembly is fixedly connected in the shell, a rotatable rotor assembly is arranged in the stator assembly, the stator assembly comprises an excitation iron core and an excitation coil wound on the excitation iron core, the rotor assembly comprises an armature shaft, a hollow armature iron core and an armature coil, the armature iron core is fixedly sleeved on the outer peripheral side of the armature shaft, a driving gear is arranged at one end of the armature shaft on the outer side of the armature iron core, a commutator is arranged at the other end of the armature shaft on the outer side of the armature iron core, a plurality of axially extending wiring grooves are circumferentially arranged on the outer peripheral surface of the armature iron core, the armature coil is formed by bending and molding a conducting wire, the armature coil is in a U shape with one open end and one closed end, and two end parts of the open end of the armature coil penetrate through the wiring grooves to be connected, the closed end of the armature coil is positioned outside the wiring groove, an annular reinforcing ring is arranged on the outer peripheral side of the armature shaft and positioned in the closed end of the armature coil, and insulating paint is filled on the outer peripheral side of the reinforcing ring in the closed end of the armature coil. The mechanical strength of the independent steel bar and the concrete is not large, but the steel bar is placed into the concrete in a certain structural form, and the comprehensive mechanical performance strength can be greatly improved. The annular reinforcing ring is placed into the closed end of the armature coil and filled with insulating paint, so that the outer peripheral side of the reinforcing ring is filled with the insulating paint, the closed end of the armature coil, the reinforcing ring and the insulating paint are combined into an organic whole, and the closed end of the armature coil can be firmly fixed under the combined action of the reinforcing ring and the insulating paint, so that the armature coil cannot deform under the action of strong centrifugal force when rotating at high speed. Because the reinforcing ring is arranged in the stator assembly, a space is provided for increasing the diameter of the outer peripheral surface formed by the armature coil, the conducting wire of the armature coil can be outwards closer to the magnet exciting coil in the stator assembly, the thickness of the annular reinforcing ring is generally between 1.5mm and 2mm, so that the inner layer and the outer layer of the conducting wire of the armature coil can be outwards moved by 1.5mm to 2mm, the diameter of the inner peripheral surface and the outer peripheral surface formed by the armature coil is increased by 3mm to 4mm, namely the force arm of the armature coil for driving the rotor assembly to rotate is increased by 3mm to 4mm, and meanwhile, the conducting wire of the armature coil is closer to the magnet exciting coil by 1.5mm to 2mm, the fact that the magnetic force lines generated by the magnet exciting coil are more densely distributed closer to the magnet exciting coil, namely the current of the armature coil is not changed, under the condition that the magnetic field intensity, therefore, the torque of the starter motor can be greatly improved under the condition that the power supply power of the starter motor is not changed by the aid of the built-in reinforcing ring, and the starting performance of the starter motor is also greatly improved.
As a further technical solution, the diameter of the outer peripheral surface formed by the armature coils arranged in the wiring grooves of the armature core is smaller than the outer diameter of the armature core, and the difference between the diameters is smaller than 3 mm.
As a further technical solution, the diameter of the outer peripheral surface formed by the armature coils arranged in the wiring grooves of the armature core is smaller than the outer diameter of the armature core, and the difference between the diameters of the armature coils and the outer peripheral surface is smaller than 0.5 mm.
As a further technical scheme, the cross section of the armature coil conducting wire closed section is waist-shaped; the armature coil conductive wire is twisted 180 ° in forming the armature coil closed section. This may be advantageous to increase the mechanical property strength of the resistance of the conductive wire.
As a further technical solution, the plurality of wiring grooves are uniformly distributed along the circumferential direction of the outer peripheral surface of the armature core.
As a further technical scheme, insulating paper is arranged between the armature core and the armature coil. This ensures reliable insulation between the armature core and the armature coil.
The utility model has the advantages that: because the annular reinforcing ring is arranged in the closed end of the armature coil, a space is provided for increasing the diameter of the inner peripheral surface and the outer peripheral surface formed by the armature coil, and the conducting wire of the armature coil can be outwards closer to the magnet exciting coil in the stator assembly, so that the force arm for driving the rotor assembly to rotate by the armature coil is increased, the driving force for driving the rotor assembly to rotate by the armature coil can be increased, the output torque can be at least improved by 15 percent under the condition that the power of the starting motor is not changed, and the starting performance of the starting motor is also greatly improved.
Drawings
FIG. 1 is a schematic view of a starter motor in accordance with the prior art;
FIG. 2 is a schematic view of a rotor assembly according to the present invention;
fig. 3 is a schematic structural view of an armature coil according to the present invention;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 2;
FIG. 5 is an enlarged schematic view of the section M of FIG. 4;
FIG. 6 is a schematic diagram of a prior art structure in which an electrically conductive wire is wrapped in an insulating paper;
FIG. 7 is a schematic cross-sectional view B-B of FIG. 3;
in the figure: 1: a housing, 2: stator assembly, 3: rotor assembly, 4: excitation core, 5: excitation coil, 6: armature coil, 7: armature shaft, 8: driving gear, 9: armature core, 10: wiring groove, 11: commutator, 12: reinforcing ring, 13: and (4) insulating paper.
Detailed Description
The present invention will be further described with reference to the following specific embodiments and accompanying drawings.
Example (b): a high-efficiency starting motor with a built-in reinforcing ring is disclosed, as shown in fig. 1, and comprises a casing 1, a hollow stator assembly 2 is fixedly connected in the casing 1, a rotatable rotor assembly 3 is arranged in the stator assembly 2, the stator assembly 2 comprises an excitation core 4 and an excitation coil 5 wound on the excitation core 4, the rotor assembly 3 comprises an armature shaft 7, a hollow armature core 9 and an armature coil 6, the armature core 9 is fixedly sleeved on the outer periphery of the armature shaft 7, one end of the armature shaft 7 is provided with a driving gear 8 integrally connected with the armature shaft 7 on the outer side of the armature core 9, the other end of the armature shaft 7 is provided with a commutator 11 on the outer side of the armature core 9, as shown in fig. 2, 3 and 4, a plurality of axially extending wiring grooves 10 are uniformly arranged on the outer periphery of the armature core 9 in the circumferential direction, the armature coil 6 is formed by bending and molding a conductive wire, the armature coil 6 is in a U shape with one open end and one closed end, two end parts of the open end of the armature coil 6 penetrate through the wiring grooves 10 to be electrically connected with the commutator 11, the closed end of the armature coil 6 is positioned at the outer side of the wiring grooves 10, in order to enhance the deformation resistance of the closed end of the armature coil 6, the conductive wire is firstly punched at the middle section position forming the closed end of the armature coil 6, so that the cross section of the conductive wire is in a waist shape as shown in figures 3 and 7 and rotates 180 degrees, the linear parts at two ends of the armature coil 6 are respectively arranged in two wiring grooves 10, the central angle of the armature core 9 corresponding to the two wiring grooves 10 is 85 degrees to 95 degrees, one linear part of the armature coil 6 is positioned in the wiring groove 10 and close to the outer side part, the other linear part of the armature coil 6 is positioned in the wiring groove 10 and close to the inner, an annular reinforcing ring 12 is provided on the outer peripheral side of the armature shaft 7, the reinforcing ring 12 is located inside the closed end of the armature coil 6, and the closed end of the armature coil 6 is filled with an insulating varnish (not shown) on the outer peripheral side of the reinforcing ring 12.
The diameter of the outer peripheral surface formed by a plurality of armature coils 6 arranged in a plurality of wiring grooves 10 of the armature core 9 is smaller than the outer diameter of the armature core 9, and the difference between the diameters is smaller than 3 mm; in a further aspect, the diameter of the outer peripheral surface formed by the plurality of armature coils 6 disposed in the plurality of wiring grooves 10 of the armature core 9 is smaller than the outer diameter of the armature core 9, and the difference between the diameters of the two is smaller than 0.5 mm.
In order to increase the reliability of the insulation performance between the armature core 9 and the armature coil 6, an insulation paper 13 is provided between the armature core 9 and the armature coil 6. In the prior art, as shown in fig. 6, the insulating paper 13 is molded into an S shape, and the S-shaped insulating paper 13 blocks the opening of the wiring groove 10, so that the insulating paint can only permeate from two ends to the middle in the paint dipping process of pouring the insulating paint, so that the paint dipping time required by the starter motor in the paint dipping process is long, generally 1 minute or more is required, the filling rate of the insulating paint can only reach about 70%, and the density of the pouring of the insulating paint is high at two ends and low in the middle, so that the production efficiency is low, the manufacturing cost is high, and the reliability of the armature coil 6 is low. And the utility model discloses an insulating paper 13 is "C" form as shown in fig. 5, and the opening of "C" form insulating paper 13 is towards the opening side of wiring groove 10, the clearance between insulating paper 13 and armature coil 6 is full of insulating varnish. Because the insulating paper 13 is molded into a C shape, and the opening of the C-shaped insulating paper 13 faces the opening side of the wiring groove 10, the insulating paint can be simultaneously filled in the full wiring section of the wiring groove 10 in the paint dipping procedure, the filling rate of 95% can be obtained within 5 to 8 seconds, and the filling density of the insulating paint is uniform in the full section, so that the starting motor has the advantages of low manufacturing cost and high reliability of performance; meanwhile, a space is provided for increasing the diameter of the peripheral surface formed by the armature coil 6, so that the conducting wire of the armature coil 6 can be more close to the magnet exciting coil 5 in the stator assembly 2 outwards, the force arm for driving the rotor assembly 3 to rotate by the armature coil 6 is increased, the driving force for driving the rotor assembly 3 to rotate by the armature coil 6 can be increased, the torque is improved under the condition that the power of the starting motor is not changed, and the starting performance of the starting motor is also improved.
The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Details not described in the present specification belong to the prior art known to those skilled in the art.
Claims (7)
1. A high-efficiency starting motor with a built-in reinforcing ring comprises a shell, wherein a hollow stator assembly is fixedly connected in the shell, a rotatable rotor assembly is arranged in the stator assembly, the stator assembly comprises an excitation iron core and an excitation coil wound on the excitation iron core, the rotor assembly comprises an armature shaft, a hollow armature iron core and an armature coil, the armature iron core is fixedly sleeved on the outer peripheral side of the armature shaft, a driving gear is arranged at one end of the armature shaft on the outer side of the armature iron core, a commutator is arranged at the other end of the armature shaft on the outer side of the armature iron core, a plurality of axially extending wiring grooves are circumferentially arranged on the outer peripheral surface of the armature iron core, the armature coil is formed by bending and molding a conducting wire, the armature coil is in a U shape with one open end and one closed end, and two end parts of the open end of the armature coil penetrate through the wiring grooves to be connected, the armature shaft is characterized in that the reinforcing ring is positioned in the closed end of the armature coil, and the outer peripheral side of the reinforcing ring in the closed end of the armature coil is filled with insulating paint.
2. The high-efficiency starter motor with an internally installed reinforcing ring according to claim 1, wherein the diameter of the outer circumferential surface formed by the plurality of armature coils arranged in the plurality of wiring grooves of the armature core is smaller than the outer diameter of the armature core, and the difference between the diameters is smaller than 3 mm.
3. The high-efficiency starter motor with an internally installed reinforcing ring according to claim 2, wherein the diameter of the outer circumferential surface formed by the plurality of armature coils arranged in the plurality of wiring grooves of the armature core is smaller than the outer diameter of the armature core, and the difference between the diameters is smaller than 0.5 mm.
4. A high efficiency starter motor with an internally installed reinforcing ring as set forth in any one of claims 1 to 3 wherein the closed section of the armature coil conductive wire has a kidney-shaped cross section.
5. A high efficiency starter motor with built-in reinforcement ring according to any one of claims 1 to 3 wherein the armature coil conductive wire is twisted 180 ° in forming the armature coil closed section.
6. A high-efficiency starter motor with an internally installed reinforcing ring according to any one of claims 1 to 3, wherein a plurality of the wiring grooves are uniformly distributed in a circumferential direction along an outer circumferential surface of the armature core.
7. A high-efficiency starter motor with an internally installed reinforcing ring according to any one of claims 1 to 3, wherein an insulating paper is interposed between the armature core and the armature coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022326134.6U CN213151749U (en) | 2020-10-19 | 2020-10-19 | High-efficiency starting motor with built-in reinforcing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022326134.6U CN213151749U (en) | 2020-10-19 | 2020-10-19 | High-efficiency starting motor with built-in reinforcing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213151749U true CN213151749U (en) | 2021-05-07 |
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ID=75720296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022326134.6U Active CN213151749U (en) | 2020-10-19 | 2020-10-19 | High-efficiency starting motor with built-in reinforcing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213151749U (en) |
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2020
- 2020-10-19 CN CN202022326134.6U patent/CN213151749U/en active Active
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