CN218161985U - High-vibration-resistance direct-current brush micro motor - Google Patents
High-vibration-resistance direct-current brush micro motor Download PDFInfo
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- CN218161985U CN218161985U CN202221599982.7U CN202221599982U CN218161985U CN 218161985 U CN218161985 U CN 218161985U CN 202221599982 U CN202221599982 U CN 202221599982U CN 218161985 U CN218161985 U CN 218161985U
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Abstract
The utility model relates to the technical field of motors, in particular to a high-vibration-resistance direct-current brush micro motor, which comprises a shell, a rear cover, an upper cover, a rotor assembly and a shaft; the shell is of a vertically-through thin-wall structure, four screw holes are formed in the assembly surface of the shell, and four grooves are formed in the end face of the shell; the rear cover is made of plastic, an electric brush arm and a carbon brush are arranged on the rear cover, and two ends of the shaft respectively penetrate through the rear cover and the upper cover; the motor comprises a shell, a rotor core, two magnets and a motor shell, wherein the shell is provided with the magnets, the two magnets are arc-shaped, the outer surfaces of the two magnets are attached to the inner wall of the shell, and the inner surfaces of the two magnets are attached to the outer surface of the rotor core; the rotor assembly comprises an inner shell, a rotor iron core, an enameled copper wire, a commutator and a thrust; the gap of the inner shell, the exposed enameled copper wire and the commutator are all wrapped by resin plastic, so that the motor can be suitable for being used in a high-strength vibration environment.
Description
Technical Field
The patent of the utility model relates to a technical field of motor particularly, relates to a direct current that high antidetonation was moved has brush micro motor.
Background
With the wide use of intelligent household electrical appliances, the demand of micro motors is increasing day by day.
In the motor industry, under the environment of high-strength vibration, the motor runs for a long time and can be influenced by the environment, and the adverse phenomena of rotor winding disconnection, deformation and damage of a shell structure and the like occur.
In order to prevent the above undesirable phenomena of the motor, the motor rotor winding coil is fixed by adding a varnish glue, and the commutator claw and the enameled wire are fixed by adding a resin glue in a butt-welding manner; the casing assembly face adopts two screw holes to increase the locking force, avoids the influence of vibrations. However, the above method has a problem in an environment of high intensity vibration.
Therefore, the direct current brush micro motor with high vibration resistance is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct current that high antidetonation was moved has brush micro motor can be applicable to and use under the high strength vibrations environment.
The utility model is realized in such a way that the high vibration resistant DC brush micro motor comprises a shell, a back cover, an upper cover, a rotor component and a shaft;
the shell is of a vertically-through thin-wall structure, four screw holes are formed in the assembly surface of the shell, and four grooves are formed in the end face of the shell;
the shaft is arranged in the shell through a 37941 chip, and the upper cover is arranged above the shell;
the rear cover is made of plastic and is arranged below the shell, the rear cover is provided with an electric brush arm and a carbon brush, and two ends of the shaft respectively penetrate through the rear cover and the upper cover;
the motor comprises a shell, a rotor core, two magnets and a motor shell, wherein the shell is provided with the magnets, the two magnets are arc-shaped, the outer surfaces of the two magnets are attached to the inner wall of the shell, and the inner surfaces of the two magnets are attached to the outer surface of the rotor core;
the rotor assembly comprises a colophony plastic, a rotor core, an enameled copper wire, a commutator and a thrust;
the shaft is of a stepped structure, the diameters of two ends of the shaft are smaller than the diameter of the middle of the shaft, enameled copper wires are wound in a winding mode, the interiors of each turn of the coils are coagulated into a whole through gel, the rotor core is arranged on the outer surface of the inner shell, a containing cavity is arranged in the inner shell, the inner shell is provided with a first through hole which is vertically communicated with the containing cavity, the enameled copper wires are arranged in the containing cavity, the shaft penetrates through the first through hole, the shaft is respectively and rotatably connected with the top end and the tail end of the first through hole through two groups of bearings, the commutator is arranged at the top end of the first through hole, the thrust is arranged at the tail end of the first through hole, and the shaft penetrates through the commutator and the thrust;
the gap of the inner shell, the exposed enameled copper wire and the commutator are all wrapped by resin plastics.
Further, the center of the rear cover is provided with a second through hole, the shaft penetrates through the second through hole, the upper end of the rear cover forms a surrounding groove through a surrounding wall, the carbon brushes are provided with two groups, the two groups of carbon brushes and the electric brush arms are arranged in the surrounding groove, conductive glue is further arranged in the surrounding groove, and the conductive glue is arranged beside the two groups of carbon brushes.
Furthermore, the lower end of the back cover is evenly provided with two positive negative terminals at intervals.
Further, the upper cover covers the top of the casing, and the on periphery of the upper cover has a plurality of annular notches which are uniformly distributed.
Furthermore, a needle stop is arranged in the top of the machine shell.
Further, the bearing is a ball bearing
Further, adjusting gaskets are arranged above the commutator and below the thrust block, and the shaft penetrates through the adjusting gaskets.
Further, the inner shell is made of resin plastics.
Further, the shell and the upper cover are both made of iron materials.
Compared with the prior art, the utility model provides a pair of direct current that high anti-vibration moved has brush micro motor, casing assembly terminal surface adopt four sunken recesses and four fixed screw holes, and the stress that produces when can eliminating strong vibrations avoids the casing assembly face to appear warping, interior casing guarantees the physical formula restriction that both ends ball bearing inwards produced the displacement for the little stepped structure in middle both ends, and exposed coil and commutator department lead to the fact and use the resin plastic to wrap, assembles into the motor after, no matter receive the vibrations that many strong external forces or self produced, the enameled wire coil of rotor can not produce not hard up aversion, just can not have the possibility that the broken string appears.
Drawings
Fig. 1 is a schematic structural view of a high vibration-resistant dc brushed micro-motor provided by the present invention;
fig. 2 is a schematic structural diagram of a rotor assembly of a high vibration-resistant dc brushed micro-motor provided by the present invention;
fig. 3 is a cross-sectional view of a rotor assembly of a high vibration resistance dc brushed micro motor provided by the present invention;
fig. 4 is a schematic view of the casing structure of the dc brush micro motor with high vibration resistance provided by the present invention;
fig. 5 is a schematic structural view of the rear cover of the high vibration resistance dc brushed micro motor provided by the present invention;
fig. 6 is a schematic structural view of the upper cover of the dc brush micro motor with high vibration resistance provided by the present invention;
reference numbers referred to in the above figures: the motor comprises a rear cover 1, a brush arm 2, a carbon brush 3, a terminal 4, conductive adhesive 5, an upper cover 6, a bearing 7, a machine shell 8, a groove 801, a needle stop 9, a magnet 10, a shaft 11, an adjusting gasket 12, an oil stop gasket 13, a commutator 14, an inner shell 15, a rotor core 16, a thrust 17 and an enameled copper wire 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms can be understood according to specific situations by those of ordinary skill in the art.
Referring to fig. 1-6, the preferred embodiment of the present invention is shown.
In order to prevent the above undesirable phenomena of the motor, the winding coil of the motor rotor is fixed by adding varnish glue, and the 14 claws of the commutator and the enameled wire are fixed by adding resin glue in a butt welding way; the assembly surface of the shell 8 adopts two screw holes to increase the locking force, thus avoiding the influence of vibration, but the method still has bad phenomena under the environment of high-strength vibration, the embodiment provides a high-vibration-resistance direct-current brush micro motor, which comprises a shell 8, a rear cover 1, an upper cover 6, a rotor assembly and a shaft 11;
as shown in fig. 1, the casing 8 is a thin-walled structure that penetrates up and down, four screw holes are formed in the assembly surface of the casing 8, four grooves 801 are formed in the end surface of the casing 8, and the number of screw holes is increased from two to four; the assembly end face of the flat shell 8 is designed into four concave grooves 801 with the depth of 0.5-1.5 mm and the width of 3-8 mm; the four grooves 801 can eliminate stress generated during strong vibration, so that the assembly surface of the shell 8 is prevented from deforming;
the shaft 11 is installed inside the casing 8 through the inner casing 15, the upper cover 6 is arranged above the casing 8, the casing 8 and the upper cover 6 of the motor are sealed by riveting 8 claw positions, and then the casing 8 and the upper cover 6 are firmly welded through a laser welding mode, so that the joint between the casing 8 and the upper cover 6 is fused into a whole, and the looseness cannot occur even under high-strength vibration (as shown in figure 6);
as shown in fig. 4, the rear cover 1 is made of plastic, the rear cover 1 is arranged below the casing 8, the rear cover 1 is provided with the brush arm 2 and the carbon brush 3, the brush arm type brushed micro motor is used, the assembly clamping position of the copper brush arm 2 and the carbon brush 3 is stuck around the rear end of the carbon brush 3 by adding resin adhesive, and two ends of the shaft 11 respectively penetrate through the rear cover 1 and the upper cover 6;
as shown in fig. 5, two magnets 10 are arranged on the casing 8, the two magnets 10 are both arc-shaped, the outer surfaces of the two magnets 10 are attached to the inner wall of the casing 8, and the inner surfaces of the two magnets 10 are attached to the outer surface of the rotor core 16;
as shown in fig. 2/3, the rotor assembly includes an inner housing 15, a rotor core 16, an enameled copper wire 18, a commutator 14, and a thrust plate 17; interior casing 15 is the little step structure in middle little both ends, 18 winding windings of enameled copper wire, and every turn of coil is inside to be coagulated integratively through the gel (adding upright glue earlier and make its every turn of coil inside to be coagulated integratively), rotor core 16 locates interior casing 15 surface, the inside appearance chamber that is equipped with of interior casing 15, interior casing 15 is equipped with the first through-hole that link up from top to bottom, this first through-hole and appearance chamber intercommunication, enameled copper wire 18 is located and is held the intracavity, axle 11 passes first through-hole, and axle 11 is connected with the top and the end rotation of first through-hole respectively through two sets of bearings 7, the top of first through-hole is located to commutator 14, thrust 17 is located on the end of first through-hole, and axle 11 passes commutator 14 and thrust 17.
Bearing 7 is ball bearing 7, and ball bearing 7 is all used at both ends, and ball bearing 7 is fixed with 8 bearing 7 positions of casing using anaerobic adhesive or tight fit, and the holding power reaches more than 50 KGf. The shaft 11 is of a stepped structure, the diameters of two ends of the shaft 11 are smaller than the diameter of the middle of the shaft 11, the stepped shafts 11 are used at two ends of the shaft 11, the diameter of the middle shaft 11 is 0.8-3 mm, the diameters of the shafts 11 at two ends are small and are in interference fit with the inner ring of the ball bearing 7, the inner ring of the ball bearing 7 is propped at the step of the shaft 11, the axial movement of the shaft 11 in the motor is limited, the shaft 11 cannot be displaced, and the possibility that the ball bearing 7 can be displaced forwards and backwards after the shaft 11 with the same outer diameter is stressed is avoided.
The center of the rear cover 1 is provided with a second through hole, the shaft 11 penetrates through the second through hole, the upper end of the rear cover 1 forms a surrounding groove through a surrounding wall, the carbon brushes 3 are provided with two groups, the two groups of carbon brushes 3 and the electric brush arms 2 are arranged in the surrounding groove, the surrounding groove is also provided with conductive adhesive 5, and the conductive adhesive 5 is arranged beside any group of carbon brushes 3.
The lower end of the rear cover 1 is provided with a plurality of terminals 4 at uniform intervals.
The top cover 6 covers the top of the casing 8, and a plurality of annular uniformly distributed gaps are arranged on the periphery of the top cover 6.
A stop pin 9 is also arranged in the top of the machine shell 8. The adjusting device is also provided with an adjusting gasket 12, the adjusting gaskets 12 are arranged above the commutator 14 and below the thrust 17, the shaft 11 penetrates through the adjusting gaskets 12, and an oil stopping gasket 13 is also arranged above the commutator 14.
The casing 8 and the upper cover 6 are both made of ferrous materials. After the terminal 4 is connected with a direct current power supply, direct current flows through the two terminals 4, the brush arms 2 and the carbon brushes 3, flows through the commutator 14, enters the coil to form a loop, so that an electromagnetic field is generated, and the rotor rotates under the action of Lorentz magnetic force in the stator permanent magnetic field by the electrified armature winding.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A high-vibration-resistance direct-current brush micro motor is characterized by comprising a machine shell, a rear cover, an upper cover, a rotor assembly and a shaft;
the shell is of a vertically-through thin-wall structure, four screw holes are formed in the assembly surface of the shell, and four grooves are formed in the end surface of the shell;
the shaft is arranged in the shell through the inner shell, and the upper cover is arranged above the shell;
the rear cover is made of plastic and is arranged below the shell, the rear cover is provided with an electric brush arm and a carbon brush, and two ends of the shaft respectively penetrate through the rear cover and the upper cover;
the motor comprises a shell, a rotor core, two magnets and a motor shell, wherein the shell is provided with the magnets, the two magnets are arc-shaped, the outer surfaces of the two magnets are attached to the inner wall of the shell, and the inner surfaces of the two magnets are attached to the outer surface of the rotor core;
the rotor assembly comprises an inner shell, a rotor iron core, an enameled copper wire, a commutator and a thrust;
the shaft is of a stepped structure, the diameters of two ends of the shaft are smaller than the diameter of the middle of the shaft, the enameled copper wire is wound in a winding mode, the inside of each coil is coagulated into a whole through gel, the rotor core is arranged on the outer surface of the inner shell, a containing cavity is arranged inside the inner shell, the inner shell is provided with a first through hole which is communicated with the containing cavity in a vertically through mode, the enameled copper wire is arranged in the containing cavity, the shaft penetrates through the first through hole, the shaft is respectively and rotatably connected with the top end and the tail end of the first through hole through two groups of bearings, the commutator is arranged at the top end of the first through hole, the thrust is arranged at the tail end of the first through hole, and the shaft penetrates through the commutator and the thrust;
the gap of the inner shell, the exposed enameled copper wire and the commutator are all wrapped by resin plastic.
2. The high vibration resistance DC brush micro motor according to claim 1, wherein the rear cover has a second through hole at the center, the shaft passes through the second through hole, the upper end of the rear cover forms a surrounding groove through the surrounding wall, two sets of carbon brushes are provided, two sets of carbon brushes and brush arms are provided in the surrounding groove, the surrounding groove is further provided with conductive adhesive, and the conductive adhesive is provided beside any one set of carbon brushes.
3. The high vibration resistance dc brushed micro-motor as claimed in claim 1, wherein a plurality of terminals are provided at the lower end of said rear cover at regular intervals.
4. The high vibration resistance DC brushed mini-motor as claimed in claim 3, wherein the top cover covers the top of the housing, and the periphery of the top cover is provided with a plurality of notches uniformly distributed in a ring shape.
5. The high vibration resistance DC brushed micromotor according to claim 4, wherein a needle stop is further provided in the top of the casing.
6. The high vibration resistance dc brushed miniature motor as set forth in claim 5, wherein said bearings are ball bearings.
7. The high vibration resistance DC brushed miniature motor according to claim 6, further comprising adjusting shims, wherein the adjusting shims are disposed above the commutator and below the thrust, and the shaft passes through the adjusting shims.
8. The high vibration resistance dc brush micro-motor according to claim 7, wherein said inner housing is made of resin plastic.
9. The high vibration resistance dc brushed micro-motor as claimed in claim 8, wherein the housing and the top cover are made of ferrous material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221599982.7U CN218161985U (en) | 2022-06-22 | 2022-06-22 | High-vibration-resistance direct-current brush micro motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221599982.7U CN218161985U (en) | 2022-06-22 | 2022-06-22 | High-vibration-resistance direct-current brush micro motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218161985U true CN218161985U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221599982.7U Active CN218161985U (en) | 2022-06-22 | 2022-06-22 | High-vibration-resistance direct-current brush micro motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218161985U (en) |
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2022
- 2022-06-22 CN CN202221599982.7U patent/CN218161985U/en active Active
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