CN209896808U - Plastic package BLDC motor with front bearing chamber and rear bearing chamber communicated - Google Patents
Plastic package BLDC motor with front bearing chamber and rear bearing chamber communicated Download PDFInfo
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- CN209896808U CN209896808U CN201920719196.8U CN201920719196U CN209896808U CN 209896808 U CN209896808 U CN 209896808U CN 201920719196 U CN201920719196 U CN 201920719196U CN 209896808 U CN209896808 U CN 209896808U
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Abstract
The utility model discloses a plastic package BLDC motor with a front bearing chamber and a rear bearing chamber communicated, which comprises a rotating shaft (1), a rotor component (2), a plastic package stator (3), a front end cover (4), a rear end cover (5) and a conducting strip (7), wherein the bottom of the outer side surface of a plastic package body (31) is circumferentially provided with a plurality of mounting feet (310), a plurality of mounting lugs (51) are circumferentially arranged on the outer side of the rear end cover (5), a plurality of mounting feet (310) correspond to the mounting lugs (51), the mounting feet (310) are connected with the mounting lugs (51) through the screws (8), the first mounting holes (311) and the second mounting holes (52), the other end of the conducting plate (7) extends to one of the mounting feet (310) and is pressed by the screws (8), and the front end cover (4), the conducting plate (7), the screws (8), the mounting lugs (51) and the rear end cover (5) are electrically connected. The novel bearing has the advantages of simple structure, firm connection, good reliability and convenience in installation, and solves the problem of electric corrosion of the bearing.
Description
The technical field is as follows:
the utility model relates to a plastic envelope BLDC motor that front and back bearing room switches on.
Background art:
the plastic package type brushless DC motor (i.e. plastic package BLDC motor) is characterized in that the plastic package material of the motor body part is insulated, the front end cover and the rear end cover can not be directly conducted actually, the motor structure can not prevent the electric corrosion of the bearing, so that the lubricating oil of the bearing can generate insulation damage and shaft current, the inner wheel and the outer wheel of the bearing can generate wavy abrasion and abnormal sound, in order to solve the problem, a conductive adhesive tape or a connecting conductor is usually pasted on the outer surface of the motor, but the structure is easy to fall off and has poor reliability in the motor transportation process.
The applicant filed 2012.12.28 a utility model patent with the name of plastic package motor and publication number CN203135653U, and found the existing scheme: the conducting sheet is conducted with the rear end cover in an extrusion mode; this approach has the following disadvantages:
1. the process operation is inconvenient; the production efficiency is low, the lug plate is easy to deform, and the appearance of the motor is influenced;
2. the conducting sheet is tightly matched with the injection molding stator and the rear end cover, so that the concentricity and the verticality of the motor end cover and the injection molding stator are influenced, and the motor is adversely influenced;
3. the conduction effect is unstable, and the hidden trouble that the conduction resistance exceeds the standard or is not conducted exists.
The invention content is as follows:
the utility model aims at providing a plastic envelope BLDC motor that front and back bearing room switches on solves among the prior art: the technical problems of inconvenient process operation, low production efficiency, easy lug deformation and unstable conduction effect are solved.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a plastic envelope BLDC motor that front and back bearing room switches on, including pivot, rotor subassembly, plastic envelope stator, front end housing, rear end cap and conducting strip, front end housing and rear end cap are metal material manufacturing, the plastic envelope stator include the plastic envelope body, stator core, tip insulation and coil winding, the plastic envelope body is moulded plastics stator core, tip insulation and coil winding and is become an organic whole, form the cavity of installation rotor subassembly in the middle of the plastic envelope stator, plastic envelope body one end forms the end plate of moulding plastics, the other end opens and installs the rear end cap, pivot and rotor subassembly erection joint are in the same place, the plastic envelope stator cover is outside the rotor subassembly, the front end cap is moulded plastics on the end plate of moulding plastics of plastic envelope stator, the end plate cladding of moulding plastics is outside the front end housing, the pivot both ends are supported respectively on the bearing of front end housing and the bearing of: the plastic package body is characterized in that a plurality of mounting feet are circumferentially arranged at the bottom of the outer side face of the plastic package body, first mounting holes are formed in the mounting feet, a plurality of mounting lugs are circumferentially arranged on the outer side of the rear end cover, second mounting holes are formed in the mounting lugs, the mounting feet correspond to the mounting lugs in position, the mounting feet are connected with the mounting lugs through screws, the first mounting holes and the second mounting holes, the other end of each conducting strip extends to one of the mounting feet and is pressed tightly by the screws, and the front end cover, the conducting strips, the screws, the mounting lugs and the rear end cover are electrically connected.
The end face of the injection molding end plate outside the front end cover is provided with a groove, the conducting plate is embedded into the groove and is electrically connected with the front end cover, and the pressing block is embedded into the groove and compresses the conducting plate.
A strip-shaped groove is formed in the outer side wall surface of the plastic package stator, the front end of the strip-shaped groove extends to the end face of the front end cover and is communicated with the groove, the tail end of the strip-shaped groove extends to one of the installation pins, and the conducting strip is embedded into the strip-shaped groove.
The mounting foot comprises a mounting plate and connecting ribs positioned on two sides of the mounting plate, and the first mounting hole is positioned on the mounting plate.
The bottom end of the plastic package body is provided with a spigot step, the rear end cover comprises an end plate and an annular sleeve protruding from the edge of the end plate, a plurality of installation lugs protrude from the outer side surface of the annular sleeve, and the annular sleeve is sleeved on the spigot step.
The end plate and the annular sleeve enclose a second cavity, the motor control circuit board is installed in the second cavity, and the rotor assembly comprises a rotor core and a permanent magnet installed on the rotor core.
The pressing block is a rivet or a screw.
The front end cover is formed by stamping a steel plate, and the rear end cover is an aluminum casting.
The conducting strip is made of conducting materials.
The conducting strip is a copper sheet or a conducting lead.
Compared with the prior art, the utility model beneficial effect be:
1) the utility model discloses a lateral surface bottom circumference of plastic-sealed body sets up a plurality of installation feet, sets up first mounting hole on the installation foot, the outside circumference of rear end cap be provided with a plurality of installation lugs, set up the second mounting hole on the installation lug, a plurality of installation feet correspond with a plurality of installation lug positions, couple together installation foot and installation lug through screw, first mounting hole and second mounting hole, the other end of conducting strip extends to one of them installation foot and is compressed tightly by the screw, front end housing, conducting strip, screw, installation lug and rear end cap form the electricity and connect. The process is convenient to operate, the production efficiency is high, the conducting strip is not easy to deform, the conducting effects of the front end cover, the conducting strip and the rear end cover are stable, the connection is firm, and the appearance of the motor is good.
2) Other advantages of the present invention are described in detail in the examples section.
Description of the drawings:
fig. 1 is a perspective view of the present invention;
fig. 2 is an exploded view of the present invention;
fig. 3 is a partial structural schematic diagram of the present invention;
fig. 4 is a schematic view of another angle partial structure of the present invention;
fig. 5 is a top view of the present invention;
FIG. 6 is a sectional view taken along line A-A of FIG. 5;
fig. 7 is a partially enlarged view of B in fig. 6.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows: as shown in fig. 1 and 7, the utility model relates to a plastic package BLDC motor with conductive front and back bearing chambers, which comprises a rotating shaft 1, a rotor assembly 2, a plastic package stator 3, a front end cap 4, a back end cap 5 and a conductive plate 7, wherein the front end cap 4 and the back end cap 5 are made of metal materials, the plastic package stator 3 comprises a plastic package body 31, a stator core 32, an end insulator 33 and a coil winding 34, the stator core 32, the end insulator 33 and the coil winding 34 are molded into a whole by the plastic package body 31, a cavity 35 for installing the rotor assembly 2 is formed in the middle of the plastic package stator 3, an injection end plate 6 is formed at one end of the plastic package body 31, the other end is open and is installed on the back end cap 5, the rotating shaft 1 and the rotor assembly 2 are installed and connected together, the plastic package stator 3 is sleeved outside the rotor assembly 2, the front end cap 4 is injection molded on the injection end plate 6 of the plastic package stator 3, the injection end plate 6 is coated outside the, one end and the front end housing 4 electricity of conducting strip 7 are connected, its characterized in that: the bottom of the outer side surface of the plastic package body 31 is circumferentially provided with a plurality of mounting feet 310, the mounting feet 310 are provided with first mounting holes 311, the outer side of the rear end cover 5 is circumferentially provided with a plurality of mounting lugs 51, the mounting lugs 51 are provided with second mounting holes 52, the mounting feet 310 correspond to the mounting lugs 51 in position, the mounting feet 310 are connected with the mounting lugs 51 through screws 8, the first mounting holes 311 and the second mounting holes 52, the other end of the conducting plate 7 extends to one of the mounting feet 310 and is pressed by the screws 8, and the front end cover 4, the conducting plate 7, the screws 8, the mounting lugs 51 and the rear end cover 5 are electrically connected. The process is convenient to operate, the production efficiency is high, the conducting strip is not easy to deform, the conducting effects of the front end cover, the conducting strip and the rear end cover are stable, the connection is firm, and the appearance of the motor is good. Effectively solve bearing galvanic corrosion problem, conducting strip firm in connection, the good reliability.
Above-mentioned outside front end housing 4, seted up on the terminal surface of end plate 6 of moulding plastics recess 61, conducting strip 7 imbeds in recess 61 and is connected with front end housing 4 electricity, and briquetting 10 imbeds in recess 61 and compresses tightly conducting strip 7, simple structure, simple to operate.
The mounting leg 310 includes a mounting plate 3101 and a connecting rib 3102 located on two sides of the mounting plate 3101, and the first mounting hole 311 is located on the mounting plate 3101, so that the structure is simple and the mounting is convenient.
The bottom end of the plastic package body 31 is provided with a spigot step 37, the rear end cover 5 comprises an end plate 53 and an annular sleeve 54 protruding from the edge of the end plate 53, a plurality of installation lugs 51 protrude from the outer side surface of the annular sleeve 54, the annular sleeve 54 is sleeved on the spigot step 37, the concentricity and the verticality of the rear end cover 5 and the plastic package stator 3 are high, the quality of a motor is effectively guaranteed, and the service life is prolonged.
The end plate 53 and the annular sleeve 54 enclose a second cavity 55, the motor control circuit board 9 is installed in the second cavity 55, and the rotor assembly 2 comprises a rotor core 21 and a permanent magnet 22 installed on the rotor core 21, so that the structure is simple and the installation is convenient.
The pressing block 10 is a rivet or a screw, and is simple in structure and convenient to mount and place.
The front end cover 4 is formed by stamping a steel plate, and the rear end cover 5 is an aluminum casting, so that the production and matching are convenient.
The conducting strip 7 is made of conducting materials, and the conducting strip 7 is a copper sheet or a conducting lead, so that the materials are easy to obtain.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (10)
1. A plastic package BLDC motor with a front bearing chamber and a rear bearing chamber communicated comprises a rotating shaft (1), a rotor assembly (2), a plastic package stator (3), a front end cover (4), a rear end cover (5) and a conducting strip (7), wherein the front end cover (4) and the rear end cover (5) are made of metal materials, the plastic package stator (3) comprises a plastic package body (31), a stator core (32), an end insulator (33) and a coil winding (34), the stator core (32), the end insulator (33) and the coil winding (34) are molded into a whole by the plastic package body (31), a cavity (35) for mounting the rotor assembly (2) is formed in the middle of the plastic package stator (3), an injection molding end plate (6) is formed at one end of the plastic package body (31), the other end of the plastic package body is opened and the rear end cover (5) is mounted and connected with the rotating shaft (1) and the rotor assembly (2), front end housing (4) are moulded plastics and are moulded plastics on the end plate (6) of moulding plastics of plastic envelope stator (3), and the end plate (6) cladding of moulding plastics is outside front end housing (4), and pivot (1) both ends support respectively on bearing (41) of front end housing (4) and bearing (50) of rear end cap (5), and the one end and the front end housing (4) electricity of conducting strip (7) are connected its characterized in that: the bottom of the outer side face of the plastic package body (31) is circumferentially provided with a plurality of mounting feet (310), the mounting feet (310) are provided with first mounting holes (311), the outer side of the rear end cover (5) is circumferentially provided with a plurality of mounting lugs (51), the mounting lugs (51) are provided with second mounting holes (52), the mounting feet (310) correspond to the mounting lugs (51), the mounting feet (310) are connected with the mounting lugs (51) through screws (8), the first mounting holes (311) and the second mounting holes (52), the other end of each conducting plate (7) extends to one of the mounting feet (310) and is pressed by the screws (8), and the front end cover (4), the conducting plates (7), the screws (8), the mounting lugs (51) and the rear end cover (5) are electrically connected.
2. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 1, wherein: a groove (61) is formed in the end face of the injection molding end plate (6) outside the front end cover (4), the conducting plate (7) is embedded into the groove (61) and is electrically connected with the front end cover (4), and the pressing block (10) is embedded into the groove (61) and compresses the conducting plate (7).
3. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 2, wherein: strip groove (36) have been seted up to the outside wall of plastic envelope stator (3), and strip groove (36) front end extends to on front end housing (4) terminal surface and communicates with recess (61), and strip groove (36) tail end extends to one of them installation foot (310), and conducting strip (7) embedding strip inslot (36).
4. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 2 or 3, wherein: the mounting foot (310) comprises a mounting plate (3101) and connecting ribs (3102) positioned on two sides of the mounting plate (3101), and the first mounting hole (311) is positioned on the mounting plate (3101).
5. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 4, wherein: the bottom end of the plastic package body (31) is provided with a spigot step (37), the rear end cover (5) comprises an end plate (53) and an annular sleeve (54) protruding from the edge of the end plate (53), a plurality of mounting lugs (51) protrude from the outer side surface of the annular sleeve (54), and the annular sleeve (54) is sleeved on the spigot step (37).
6. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 5, wherein: the end plate (53) and the annular sleeve (54) enclose a second cavity (55), the motor control circuit board (9) is installed in the second cavity (55), and the rotor assembly (2) comprises a rotor core (21) and a permanent magnet (22) installed on the rotor core (21).
7. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 6, wherein: the pressing block (10) is a rivet or a screw.
8. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 7, wherein: the front end cover (4) is formed by stamping steel plates, and the rear end cover (5) is an aluminum casting.
9. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 8, wherein: the conducting strip (7) is made of conducting material.
10. The plastic package BLDC motor with the front and rear bearing chambers conducted according to claim 9, wherein: the conducting strip (7) is a copper sheet or a conducting lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920719196.8U CN209896808U (en) | 2019-05-20 | 2019-05-20 | Plastic package BLDC motor with front bearing chamber and rear bearing chamber communicated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920719196.8U CN209896808U (en) | 2019-05-20 | 2019-05-20 | Plastic package BLDC motor with front bearing chamber and rear bearing chamber communicated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209896808U true CN209896808U (en) | 2020-01-03 |
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ID=69020867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920719196.8U Active CN209896808U (en) | 2019-05-20 | 2019-05-20 | Plastic package BLDC motor with front bearing chamber and rear bearing chamber communicated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209896808U (en) |
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2019
- 2019-05-20 CN CN201920719196.8U patent/CN209896808U/en active Active
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